Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

151 files changed, 39189 insertions, 0 deletions

diff --git a/media/ffvpx/libavutil/aarch64/asm.S b/media/ffvpx/libavutil/aarch64/asm.S
new file mode 100644
index 0000000000..fd32bf784e
--- /dev/null
+++ b/media/ffvpx/libavutil/aarch64/asm.S
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#ifdef __ELF__
+#   define ELF
+#else
+#   define ELF #
+#endif
+
+#if HAVE_AS_FUNC
+#   define FUNC
+#else
+#   define FUNC #
+#endif
+
+.macro  function name, export=0, align=2
+    .macro endfunc
+ELF     .size   \name, . - \name
+FUNC    .endfunc
+        .purgem endfunc
+    .endm
+        .text
+        .align          \align
+    .if \export
+        .global EXTERN_ASM\name
+ELF     .type   EXTERN_ASM\name, %function
+FUNC    .func   EXTERN_ASM\name
+EXTERN_ASM\name:
+    .else
+ELF     .type   \name, %function
+FUNC    .func   \name
+\name:
+    .endif
+.endm
+
+.macro  const   name, align=2, relocate=0
+    .macro endconst
+ELF     .size   \name, . - \name
+        .purgem endconst
+    .endm
+#if HAVE_SECTION_DATA_REL_RO
+.if \relocate
+        .section        .data.rel.ro
+.else
+        .section        .rodata
+.endif
+#elif !defined(__MACH__)
+        .section        .rodata
+#else
+        .const_data
+#endif
+        .align          \align
+\name:
+.endm
+
+.macro  movrel rd, val, offset=0
+#if CONFIG_PIC && defined(__APPLE__)
+    .if \offset < 0
+        adrp            \rd, \val@PAGE
+        add             \rd, \rd, \val@PAGEOFF
+        sub             \rd, \rd, -(\offset)
+    .else
+        adrp            \rd, \val+(\offset)@PAGE
+        add             \rd, \rd, \val+(\offset)@PAGEOFF
+    .endif
+#elif CONFIG_PIC && defined(_WIN32)
+    .if \offset < 0
+        adrp            \rd, \val
+        add             \rd, \rd, :lo12:\val
+        sub             \rd, \rd, -(\offset)
+    .else
+        adrp            \rd, \val+(\offset)
+        add             \rd, \rd, :lo12:\val+(\offset)
+    .endif
+#elif CONFIG_PIC
+        adrp            \rd, \val+(\offset)
+        add             \rd, \rd, :lo12:\val+(\offset)
+#else
+        ldr             \rd, =\val+\offset
+#endif
+.endm
+
+#define GLUE(a, b) a ## b
+#define JOIN(a, b) GLUE(a, b)
+#define X(s) JOIN(EXTERN_ASM, s)
diff --git a/media/ffvpx/libavutil/aarch64/bswap.h b/media/ffvpx/libavutil/aarch64/bswap.h
new file mode 100644
index 0000000000..90b8a63c0a
--- /dev/null
+++ b/media/ffvpx/libavutil/aarch64/bswap.h
@@ -0,0 +1,51 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_AARCH64_BSWAP_H
+#define AVUTIL_AARCH64_BSWAP_H
+
+#include <stdint.h>
+#include "config.h"
+#include "libavutil/attributes.h"
+
+#if HAVE_INLINE_ASM
+
+#define av_bswap16 av_bswap16
+static av_always_inline av_const unsigned av_bswap16(unsigned x)
+{
+    __asm__("rev16 %w0, %w0" : "+r"(x));
+    return x;
+}
+
+#define av_bswap32 av_bswap32
+static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
+{
+    __asm__("rev %w0, %w0" : "+r"(x));
+    return x;
+}
+
+#define av_bswap64 av_bswap64
+static av_always_inline av_const uint64_t av_bswap64(uint64_t x)
+{
+    __asm__("rev %0, %0" : "+r"(x));
+    return x;
+}
+
+#endif /* HAVE_INLINE_ASM */
+
+#endif /* AVUTIL_AARCH64_BSWAP_H */
diff --git a/media/ffvpx/libavutil/aarch64/cpu.c b/media/ffvpx/libavutil/aarch64/cpu.c
new file mode 100644
index 0000000000..cc641da576
--- /dev/null
+++ b/media/ffvpx/libavutil/aarch64/cpu.c
@@ -0,0 +1,38 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/cpu.h"
+#include "libavutil/cpu_internal.h"
+#include "config.h"
+
+int ff_get_cpu_flags_aarch64(void)
+{
+    return AV_CPU_FLAG_ARMV8 * HAVE_ARMV8 |
+           AV_CPU_FLAG_NEON  * HAVE_NEON  |
+           AV_CPU_FLAG_VFP   * HAVE_VFP;
+}
+
+size_t ff_get_cpu_max_align_aarch64(void)
+{
+    int flags = av_get_cpu_flags();
+
+    if (flags & AV_CPU_FLAG_NEON)
+        return 16;
+
+    return 8;
+}
diff --git a/media/ffvpx/libavutil/aarch64/cpu.h b/media/ffvpx/libavutil/aarch64/cpu.h
new file mode 100644
index 0000000000..2ee3f9323a
--- /dev/null
+++ b/media/ffvpx/libavutil/aarch64/cpu.h
@@ -0,0 +1,29 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_AARCH64_CPU_H
+#define AVUTIL_AARCH64_CPU_H
+
+#include "libavutil/cpu.h"
+#include "libavutil/cpu_internal.h"
+
+#define have_armv8(flags) CPUEXT(flags, ARMV8)
+#define have_neon(flags) CPUEXT(flags, NEON)
+#define have_vfp(flags)  CPUEXT(flags, VFP)
+
+#endif /* AVUTIL_AARCH64_CPU_H */
diff --git a/media/ffvpx/libavutil/aarch64/float_dsp_init.c b/media/ffvpx/libavutil/aarch64/float_dsp_init.c
new file mode 100644
index 0000000000..4325071821
--- /dev/null
+++ b/media/ffvpx/libavutil/aarch64/float_dsp_init.c
@@ -0,0 +1,69 @@
+/*
+ * ARM NEON optimised Float DSP functions
+ * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/float_dsp.h"
+#include "cpu.h"
+
+void ff_vector_fmul_neon(float *dst, const float *src0, const float *src1,
+                         int len);
+
+void ff_vector_fmac_scalar_neon(float *dst, const float *src, float mul,
+                                int len);
+
+void ff_vector_fmul_scalar_neon(float *dst, const float *src, float mul,
+                                int len);
+
+void ff_vector_dmul_scalar_neon(double *dst, const double *src, double mul,
+                                int len);
+
+void ff_vector_fmul_window_neon(float *dst, const float *src0,
+                                const float *src1, const float *win, int len);
+
+void ff_vector_fmul_add_neon(float *dst, const float *src0, const float *src1,
+                             const float *src2, int len);
+
+void ff_vector_fmul_reverse_neon(float *dst, const float *src0,
+                                 const float *src1, int len);
+
+void ff_butterflies_float_neon(float *v1, float *v2, int len);
+
+float ff_scalarproduct_float_neon(const float *v1, const float *v2, int len);
+
+av_cold void ff_float_dsp_init_aarch64(AVFloatDSPContext *fdsp)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (have_neon(cpu_flags)) {
+        fdsp->butterflies_float   = ff_butterflies_float_neon;
+        fdsp->scalarproduct_float = ff_scalarproduct_float_neon;
+        fdsp->vector_dmul_scalar  = ff_vector_dmul_scalar_neon;
+        fdsp->vector_fmul         = ff_vector_fmul_neon;
+        fdsp->vector_fmac_scalar  = ff_vector_fmac_scalar_neon;
+        fdsp->vector_fmul_add     = ff_vector_fmul_add_neon;
+        fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_neon;
+        fdsp->vector_fmul_scalar  = ff_vector_fmul_scalar_neon;
+        fdsp->vector_fmul_window  = ff_vector_fmul_window_neon;
+    }
+}
diff --git a/media/ffvpx/libavutil/aarch64/float_dsp_neon.S b/media/ffvpx/libavutil/aarch64/float_dsp_neon.S
new file mode 100644
index 0000000000..02d790c0cc
--- /dev/null
+++ b/media/ffvpx/libavutil/aarch64/float_dsp_neon.S
@@ -0,0 +1,202 @@
+/*
+ * ARM NEON optimised Float DSP functions
+ * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
+ * Copyright (c) 2014 Janne Grunau <janne-libav@jannau.net>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "asm.S"
+
+function ff_vector_fmul_neon, export=1
+1:      subs            w3,  w3,  #16
+        ld1             {v0.4S, v1.4S}, [x1], #32
+        ld1             {v2.4S, v3.4S}, [x1], #32
+        ld1             {v4.4S, v5.4S}, [x2], #32
+        ld1             {v6.4S, v7.4S}, [x2], #32
+        fmul            v16.4S, v0.4S,  v4.4S
+        fmul            v17.4S, v1.4S,  v5.4S
+        fmul            v18.4S, v2.4S,  v6.4S
+        fmul            v19.4S, v3.4S,  v7.4S
+        st1             {v16.4S, v17.4S}, [x0], #32
+        st1             {v18.4S, v19.4S}, [x0], #32
+        b.ne            1b
+        ret
+endfunc
+
+function ff_vector_fmac_scalar_neon, export=1
+        mov             x3,  #-32
+1:      subs            w2,  w2,  #16
+        ld1             {v16.4S, v17.4S}, [x0], #32
+        ld1             {v18.4S, v19.4S}, [x0], x3
+        ld1             {v4.4S,  v5.4S},  [x1], #32
+        ld1             {v6.4S,  v7.4S},  [x1], #32
+        fmla            v16.4S, v4.4S,  v0.S[0]
+        fmla            v17.4S, v5.4S,  v0.S[0]
+        fmla            v18.4S, v6.4S,  v0.S[0]
+        fmla            v19.4S, v7.4S,  v0.S[0]
+        st1             {v16.4S, v17.4S}, [x0], #32
+        st1             {v18.4S, v19.4S}, [x0], #32
+        b.ne            1b
+        ret
+endfunc
+
+function ff_vector_fmul_scalar_neon, export=1
+        mov             w4,  #15
+        bics            w3,  w2,  w4
+        dup             v16.4S, v0.S[0]
+        b.eq            3f
+        ld1             {v0.4S, v1.4S}, [x1], #32
+1:      subs            w3,  w3,  #16
+        fmul            v0.4S,  v0.4S,  v16.4S
+        ld1             {v2.4S, v3.4S}, [x1], #32
+        fmul            v1.4S,  v1.4S,  v16.4S
+        fmul            v2.4S,  v2.4S,  v16.4S
+        st1             {v0.4S, v1.4S}, [x0], #32
+        fmul            v3.4S,  v3.4S,  v16.4S
+        b.eq            2f
+        ld1             {v0.4S, v1.4S}, [x1], #32
+        st1             {v2.4S, v3.4S}, [x0], #32
+        b               1b
+2:      ands            w2,  w2,  #15
+        st1             {v2.4S, v3.4S}, [x0], #32
+        b.eq            4f
+3:      ld1             {v0.4S}, [x1], #16
+        fmul            v0.4S,  v0.4S,  v16.4S
+        st1             {v0.4S}, [x0], #16
+        subs            w2,  w2,  #4
+        b.gt            3b
+4:      ret
+endfunc
+
+function ff_vector_dmul_scalar_neon, export=1
+        dup             v16.2D, v0.D[0]
+        ld1             {v0.2D, v1.2D}, [x1], #32
+1:      subs            w2,  w2,  #8
+        fmul            v0.2D,  v0.2D,  v16.2D
+        ld1             {v2.2D, v3.2D}, [x1], #32
+        fmul            v1.2D,  v1.2D,  v16.2D
+        fmul            v2.2D,  v2.2D,  v16.2D
+        st1             {v0.2D, v1.2D}, [x0], #32
+        fmul            v3.2D,  v3.2D,  v16.2D
+        ld1             {v0.2D, v1.2D}, [x1], #32
+        st1             {v2.2D, v3.2D}, [x0], #32
+        b.gt            1b
+        ret
+endfunc
+
+function ff_vector_fmul_window_neon, export=1
+        sxtw            x4,  w4                 // len
+        sub             x2,  x2,  #8
+        sub             x5,  x4,  #2
+        add             x2,  x2,  x5, lsl #2    // src1 + 4 * (len - 4)
+        add             x6,  x3,  x5, lsl #3    // win  + 8 * (len - 2)
+        add             x5,  x0,  x5, lsl #3    // dst  + 8 * (len - 2)
+        mov             x7,  #-16
+        ld1             {v0.4S},  [x1], #16     // s0
+        ld1             {v2.4S},  [x3], #16     // wi
+        ld1             {v1.4S},  [x2], x7      // s1
+1:      ld1             {v3.4S},  [x6], x7      // wj
+        subs            x4,  x4,  #4
+        fmul            v17.4S, v0.4S,  v2.4S   // s0 * wi
+        rev64           v4.4S,  v1.4S
+        rev64           v5.4S,  v3.4S
+        rev64           v17.4S, v17.4S
+        ext             v4.16B,  v4.16B,  v4.16B,  #8 // s1_r
+        ext             v5.16B,  v5.16B,  v5.16B,  #8 // wj_r
+        ext             v17.16B, v17.16B, v17.16B, #8 // (s0 * wi)_rev
+        fmul            v16.4S, v0.4S,  v5.4S  // s0 * wj_r
+        fmla            v17.4S, v1.4S,  v3.4S  // (s0 * wi)_rev + s1 * wj
+        b.eq            2f
+        ld1             {v0.4S},  [x1], #16
+        fmls            v16.4S, v4.4S,  v2.4S  // s0 * wj_r - s1_r * wi
+        st1             {v17.4S}, [x5], x7
+        ld1             {v2.4S},  [x3], #16
+        ld1             {v1.4S},  [x2], x7
+        st1             {v16.4S}, [x0], #16
+        b               1b
+2:
+        fmls            v16.4S, v4.4S,  v2.4S  // s0 * wj_r - s1_r * wi
+        st1             {v17.4S}, [x5], x7
+        st1             {v16.4S}, [x0], #16
+        ret
+endfunc
+
+function ff_vector_fmul_add_neon, export=1
+        ld1             {v0.4S, v1.4S},  [x1], #32
+        ld1             {v2.4S, v3.4S},  [x2], #32
+        ld1             {v4.4S, v5.4S},  [x3], #32
+1:      subs            w4,  w4,  #8
+        fmla            v4.4S,  v0.4S,  v2.4S
+        fmla            v5.4S,  v1.4S,  v3.4S
+        b.eq            2f
+        ld1             {v0.4S, v1.4S},  [x1], #32
+        ld1             {v2.4S, v3.4S},  [x2], #32
+        st1             {v4.4S, v5.4S},  [x0], #32
+        ld1             {v4.4S, v5.4S},  [x3], #32
+        b               1b
+2:      st1             {v4.4S, v5.4S},  [x0], #32
+        ret
+endfunc
+
+function ff_vector_fmul_reverse_neon, export=1
+        sxtw            x3,  w3
+        add             x2,  x2,  x3,  lsl #2
+        sub             x2,  x2,  #32
+        mov             x4, #-32
+        ld1             {v2.4S, v3.4S},  [x2], x4
+        ld1             {v0.4S, v1.4S},  [x1], #32
+1:      subs            x3,  x3,  #8
+        rev64           v3.4S,  v3.4S
+        rev64           v2.4S,  v2.4S
+        ext             v3.16B, v3.16B, v3.16B,  #8
+        ext             v2.16B, v2.16B, v2.16B,  #8
+        fmul            v16.4S, v0.4S,  v3.4S
+        fmul            v17.4S, v1.4S,  v2.4S
+        b.eq            2f
+        ld1             {v2.4S, v3.4S},  [x2], x4
+        ld1             {v0.4S, v1.4S},  [x1], #32
+        st1             {v16.4S, v17.4S},  [x0], #32
+        b               1b
+2:      st1             {v16.4S, v17.4S},  [x0], #32
+        ret
+endfunc
+
+function ff_butterflies_float_neon, export=1
+1:      ld1             {v0.4S}, [x0]
+        ld1             {v1.4S}, [x1]
+        subs            w2,  w2,  #4
+        fsub            v2.4S,   v0.4S,  v1.4S
+        fadd            v3.4S,   v0.4S,  v1.4S
+        st1             {v2.4S}, [x1],   #16
+        st1             {v3.4S}, [x0],   #16
+        b.gt            1b
+        ret
+endfunc
+
+function ff_scalarproduct_float_neon, export=1
+        movi            v2.4S,  #0
+1:      ld1             {v0.4S}, [x0],   #16
+        ld1             {v1.4S}, [x1],   #16
+        subs            w2,      w2,     #4
+        fmla            v2.4S,   v0.4S,  v1.4S
+        b.gt            1b
+        faddp           v0.4S,   v2.4S,  v2.4S
+        faddp           s0,      v0.2S
+        ret
+endfunc
diff --git a/media/ffvpx/libavutil/aarch64/moz.build b/media/ffvpx/libavutil/aarch64/moz.build
new file mode 100644
index 0000000000..9233abf768
--- /dev/null
+++ b/media/ffvpx/libavutil/aarch64/moz.build
@@ -0,0 +1,19 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+SOURCES += [
+    'cpu.c',
+    'float_dsp_init.c',
+    'float_dsp_neon.S',
+]
+
+if CONFIG['OS_ARCH'] == 'WINNT':
+    USE_INTEGRATED_CLANGCL_AS = True
+    DEFINES['EXTERN_ASM'] = ''
+
+FINAL_LIBRARY = 'mozavutil'
+
+include('/media/ffvpx/ffvpxcommon.mozbuild')
diff --git a/media/ffvpx/libavutil/aarch64/timer.h b/media/ffvpx/libavutil/aarch64/timer.h
new file mode 100644
index 0000000000..b570039416
--- /dev/null
+++ b/media/ffvpx/libavutil/aarch64/timer.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2015 Janne Grunau <janne-libav@jannau.net>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_AARCH64_TIMER_H
+#define AVUTIL_AARCH64_TIMER_H
+
+#include <stdint.h>
+#include "config.h"
+
+#if HAVE_INLINE_ASM
+
+#define AV_READ_TIME read_time
+
+static inline uint64_t read_time(void)
+{
+    uint64_t cycle_counter;
+    __asm__ volatile(
+        "isb                   \t\n"
+        "mrs %0, pmccntr_el0       "
+        : "=r"(cycle_counter) :: "memory" );
+
+    return cycle_counter;
+}
+
+#endif /* HAVE_INLINE_ASM */
+
+#endif /* AVUTIL_AARCH64_TIMER_H */
diff --git a/media/ffvpx/libavutil/adler32.c b/media/ffvpx/libavutil/adler32.c
new file mode 100644
index 0000000000..c87d5e261c
--- /dev/null
+++ b/media/ffvpx/libavutil/adler32.c
@@ -0,0 +1,97 @@
+/*
+ * Compute the Adler-32 checksum of a data stream.
+ * This is a modified version based on adler32.c from the zlib library.
+ *
+ * Copyright (C) 1995 Mark Adler
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+/**
+ * @file
+ * Computes the Adler-32 checksum of a data stream
+ *
+ * This is a modified version based on adler32.c from the zlib library.
+ * @author Mark Adler
+ * @ingroup lavu_adler32
+ */
+
+#include "config.h"
+#include "adler32.h"
+#include "common.h"
+#include "intreadwrite.h"
+
+#define BASE 65521L /* largest prime smaller than 65536 */
+
+#define DO1(buf)  { s1 += *buf++; s2 += s1; }
+#define DO4(buf)  DO1(buf); DO1(buf); DO1(buf); DO1(buf);
+#define DO16(buf) DO4(buf); DO4(buf); DO4(buf); DO4(buf);
+
+unsigned long av_adler32_update(unsigned long adler, const uint8_t * buf,
+                                unsigned int len)
+{
+    unsigned long s1 = adler & 0xffff;
+    unsigned long s2 = adler >> 16;
+
+    while (len > 0) {
+#if HAVE_FAST_64BIT && HAVE_FAST_UNALIGNED && !CONFIG_SMALL
+        unsigned len2 = FFMIN((len-1) & ~7, 23*8);
+        if (len2) {
+            uint64_t a1= 0;
+            uint64_t a2= 0;
+            uint64_t b1= 0;
+            uint64_t b2= 0;
+            len -= len2;
+            s2 += s1*len2;
+            while (len2 >= 8) {
+                uint64_t v = AV_RN64(buf);
+                a2 += a1;
+                b2 += b1;
+                a1 +=  v    &0x00FF00FF00FF00FF;
+                b1 += (v>>8)&0x00FF00FF00FF00FF;
+                len2 -= 8;
+                buf+=8;
+            }
+
+            //We combine the 8 interleaved adler32 checksums without overflows
+            //Decreasing the number of iterations would allow below code to be
+            //simplified but would likely be slower due to the fewer iterations
+            //of the inner loop
+            s1 += ((a1+b1)*0x1000100010001)>>48;
+            s2 += ((((a2&0xFFFF0000FFFF)+(b2&0xFFFF0000FFFF)+((a2>>16)&0xFFFF0000FFFF)+((b2>>16)&0xFFFF0000FFFF))*0x800000008)>>32)
+#if HAVE_BIGENDIAN
+                 + 2*((b1*0x1000200030004)>>48)
+                 +   ((a1*0x1000100010001)>>48)
+                 + 2*((a1*0x0000100020003)>>48);
+#else
+                 + 2*((a1*0x4000300020001)>>48)
+                 +   ((b1*0x1000100010001)>>48)
+                 + 2*((b1*0x3000200010000)>>48);
+#endif
+        }
+#else
+        while (len > 4  && s2 < (1U << 31)) {
+            DO4(buf);
+            len -= 4;
+        }
+#endif
+        DO1(buf); len--;
+        s1 %= BASE;
+        s2 %= BASE;
+    }
+    return (s2 << 16) | s1;
+}
diff --git a/media/ffvpx/libavutil/adler32.h b/media/ffvpx/libavutil/adler32.h
new file mode 100644
index 0000000000..a1f035b734
--- /dev/null
+++ b/media/ffvpx/libavutil/adler32.h
@@ -0,0 +1,60 @@
+/*
+ * copyright (c) 2006 Mans Rullgard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @ingroup lavu_adler32
+ * Public header for Adler-32 hash function implementation.
+ */
+
+#ifndef AVUTIL_ADLER32_H
+#define AVUTIL_ADLER32_H
+
+#include <stdint.h>
+#include "attributes.h"
+
+/**
+ * @defgroup lavu_adler32 Adler-32
+ * @ingroup lavu_hash
+ * Adler-32 hash function implementation.
+ *
+ * @{
+ */
+
+/**
+ * Calculate the Adler32 checksum of a buffer.
+ *
+ * Passing the return value to a subsequent av_adler32_update() call
+ * allows the checksum of multiple buffers to be calculated as though
+ * they were concatenated.
+ *
+ * @param adler initial checksum value
+ * @param buf   pointer to input buffer
+ * @param len   size of input buffer
+ * @return      updated checksum
+ */
+unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf,
+                                unsigned int len) av_pure;
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_ADLER32_H */
diff --git a/media/ffvpx/libavutil/arm/asm.S b/media/ffvpx/libavutil/arm/asm.S
new file mode 100644
index 0000000000..e3a8c7f065
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/asm.S
@@ -0,0 +1,367 @@
+/*
+ * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#ifdef __ELF__
+#   define ELF
+#else
+#   define ELF @
+#endif
+
+#if CONFIG_THUMB
+#   define A @
+#   define T
+#else
+#   define A
+#   define T @
+#endif
+
+#if HAVE_AS_FUNC
+#   define FUNC
+#else
+#   define FUNC @
+#endif
+
+#if HAVE_AS_FPU_DIRECTIVE
+#   define FPU
+#else
+#   define FPU @
+#endif
+
+#if CONFIG_THUMB && defined(__APPLE__)
+#   define TFUNC
+#else
+#   define TFUNC @
+#endif
+
+#if HAVE_AS_ARCH_DIRECTIVE
+#if   HAVE_NEON
+        .arch           armv7-a
+#elif HAVE_ARMV6T2
+        .arch           armv6t2
+#elif HAVE_ARMV6
+        .arch           armv6
+#elif HAVE_ARMV5TE
+        .arch           armv5te
+#endif
+#endif
+#if   HAVE_AS_OBJECT_ARCH
+ELF     .object_arch    armv4
+#endif
+
+#if   HAVE_NEON
+FPU     .fpu            neon
+ELF     .eabi_attribute 10, 0           @ suppress Tag_FP_arch
+ELF     .eabi_attribute 12, 0           @ suppress Tag_Advanced_SIMD_arch
+#elif HAVE_VFP
+FPU     .fpu            vfp
+ELF     .eabi_attribute 10, 0           @ suppress Tag_FP_arch
+#endif
+
+        .syntax unified
+T       .thumb
+ELF     .eabi_attribute 25, 1           @ Tag_ABI_align_preserved
+ELF     .section .note.GNU-stack,"",%progbits @ Mark stack as non-executable
+
+.macro  function name, export=0, align=2
+        .set            .Lpic_idx, 0
+        .set            .Lpic_gp, 0
+    .macro endfunc
+      .if .Lpic_idx
+        .align          2
+        .altmacro
+        put_pic         %(.Lpic_idx - 1)
+        .noaltmacro
+      .endif
+      .if .Lpic_gp
+        .unreq          gp
+      .endif
+ELF     .size   \name, . - \name
+FUNC    .endfunc
+        .purgem endfunc
+    .endm
+        .text
+        .align          \align
+    .if \export
+        .global EXTERN_ASM\name
+ELF     .type   EXTERN_ASM\name, %function
+FUNC    .func   EXTERN_ASM\name
+TFUNC   .thumb_func EXTERN_ASM\name
+EXTERN_ASM\name:
+    .else
+ELF     .type   \name, %function
+FUNC    .func   \name
+TFUNC   .thumb_func \name
+\name:
+    .endif
+.endm
+
+.macro  const   name, align=2, relocate=0
+    .macro endconst
+ELF     .size   \name, . - \name
+        .purgem endconst
+    .endm
+#if HAVE_SECTION_DATA_REL_RO
+.if \relocate
+        .section        .data.rel.ro
+.else
+        .section        .rodata
+.endif
+#elif defined(_WIN32)
+        .section        .rdata
+#elif !defined(__MACH__)
+        .section        .rodata
+#else
+        .const_data
+#endif
+        .align          \align
+\name:
+.endm
+
+#if !HAVE_ARMV6T2_EXTERNAL
+.macro  movw    rd, val
+        mov     \rd, \val &  255
+        orr     \rd, \val & ~255
+.endm
+#endif
+
+.macro  mov32   rd, val
+#if HAVE_ARMV6T2_EXTERNAL
+        movw            \rd, #(\val) & 0xffff
+    .if (\val) >> 16
+        movt            \rd, #(\val) >> 16
+    .endif
+#else
+        ldr             \rd, =\val
+#endif
+.endm
+
+.macro  put_pic         num
+        put_pic_\num
+.endm
+
+.macro  do_def_pic      num, val, label
+    .macro put_pic_\num
+      .if \num
+        .altmacro
+        put_pic         %(\num - 1)
+        .noaltmacro
+      .endif
+\label: .word           \val
+        .purgem         put_pic_\num
+    .endm
+.endm
+
+.macro  def_pic         val, label
+        .altmacro
+        do_def_pic      %.Lpic_idx, \val, \label
+        .noaltmacro
+        .set            .Lpic_idx, .Lpic_idx + 1
+.endm
+
+.macro  ldpic           rd,  val, indir=0
+        ldr             \rd, .Lpicoff\@
+.Lpic\@:
+    .if \indir
+A       ldr             \rd, [pc, \rd]
+T       add             \rd, pc
+T       ldr             \rd, [\rd]
+    .else
+        add             \rd, pc
+    .endif
+        def_pic         \val - (.Lpic\@ + (8 >> CONFIG_THUMB)), .Lpicoff\@
+.endm
+
+.macro  movrel rd, val
+#if CONFIG_PIC
+        ldpic           \rd, \val
+#elif HAVE_ARMV6T2_EXTERNAL && !defined(__APPLE__)
+        movw            \rd, #:lower16:\val
+        movt            \rd, #:upper16:\val
+#else
+        ldr             \rd, =\val
+#endif
+.endm
+
+.macro  movrelx         rd,  val, gp
+    .ifc \rd,\gp
+        .error      "movrelx needs two distinct registers"
+    .endif
+    .ifc \rd\()_\gp,r12_
+        .warning    "movrelx rd=\rd without explicit set gp"
+    .endif
+    .ifc \rd\()_\gp,ip_
+        .warning    "movrelx rd=\rd without explicit set gp"
+    .endif
+#if CONFIG_PIC && defined(__ELF__)
+    .ifnb \gp
+      .if .Lpic_gp
+        .unreq          gp
+      .endif
+        gp      .req    \gp
+        ldpic           gp,  _GLOBAL_OFFSET_TABLE_
+    .elseif !.Lpic_gp
+        gp      .req    r12
+        ldpic           gp,  _GLOBAL_OFFSET_TABLE_
+    .endif
+        .set            .Lpic_gp, 1
+        ldr             \rd, .Lpicoff\@
+        ldr             \rd, [gp, \rd]
+        def_pic         \val(GOT), .Lpicoff\@
+#elif CONFIG_PIC && defined(__APPLE__)
+        ldpic           \rd, .Lpic\@, indir=1
+        .non_lazy_symbol_pointer
+.Lpic\@:
+        .indirect_symbol \val
+        .word           0
+        .text
+#else
+        movrel          \rd, \val
+#endif
+.endm
+
+.macro  add_sh          rd,  rn,  rm,  sh:vararg
+A       add             \rd, \rn, \rm, \sh
+T       mov             \rm, \rm, \sh
+T       add             \rd, \rn, \rm
+.endm
+
+.macro  ldr_pre         rt,  rn,  rm:vararg
+A       ldr             \rt, [\rn, \rm]!
+T       add             \rn, \rn, \rm
+T       ldr             \rt, [\rn]
+.endm
+
+.macro  ldr_dpre        rt,  rn,  rm:vararg
+A       ldr             \rt, [\rn, -\rm]!
+T       sub             \rn, \rn, \rm
+T       ldr             \rt, [\rn]
+.endm
+
+.macro  ldr_nreg        rt,  rn,  rm:vararg
+A       ldr             \rt, [\rn, -\rm]
+T       sub             \rt, \rn, \rm
+T       ldr             \rt, [\rt]
+.endm
+
+.macro  ldr_post        rt,  rn,  rm:vararg
+A       ldr             \rt, [\rn], \rm
+T       ldr             \rt, [\rn]
+T       add             \rn, \rn, \rm
+.endm
+
+.macro  ldrc_pre        cc,  rt,  rn,  rm:vararg
+A       ldr\cc          \rt, [\rn, \rm]!
+T       itt             \cc
+T       add\cc          \rn, \rn, \rm
+T       ldr\cc          \rt, [\rn]
+.endm
+
+.macro  ldrd_reg        rt,  rt2, rn,  rm
+A       ldrd            \rt, \rt2, [\rn, \rm]
+T       add             \rt, \rn, \rm
+T       ldrd            \rt, \rt2, [\rt]
+.endm
+
+.macro  ldrd_post       rt,  rt2, rn,  rm
+A       ldrd            \rt, \rt2, [\rn], \rm
+T       ldrd            \rt, \rt2, [\rn]
+T       add             \rn, \rn, \rm
+.endm
+
+.macro  ldrh_pre        rt,  rn,  rm
+A       ldrh            \rt, [\rn, \rm]!
+T       add             \rn, \rn, \rm
+T       ldrh            \rt, [\rn]
+.endm
+
+.macro  ldrh_dpre       rt,  rn,  rm
+A       ldrh            \rt, [\rn, -\rm]!
+T       sub             \rn, \rn, \rm
+T       ldrh            \rt, [\rn]
+.endm
+
+.macro  ldrh_post       rt,  rn,  rm
+A       ldrh            \rt, [\rn], \rm
+T       ldrh            \rt, [\rn]
+T       add             \rn, \rn, \rm
+.endm
+
+.macro  ldrb_post       rt,  rn,  rm
+A       ldrb            \rt, [\rn], \rm
+T       ldrb            \rt, [\rn]
+T       add             \rn, \rn, \rm
+.endm
+
+.macro  str_post       rt,  rn,  rm:vararg
+A       str             \rt, [\rn], \rm
+T       str             \rt, [\rn]
+T       add             \rn, \rn, \rm
+.endm
+
+.macro  strb_post       rt,  rn,  rm:vararg
+A       strb            \rt, [\rn], \rm
+T       strb            \rt, [\rn]
+T       add             \rn, \rn, \rm
+.endm
+
+.macro  strd_post       rt,  rt2, rn,  rm
+A       strd            \rt, \rt2, [\rn], \rm
+T       strd            \rt, \rt2, [\rn]
+T       add             \rn, \rn, \rm
+.endm
+
+.macro  strh_pre        rt,  rn,  rm
+A       strh            \rt, [\rn, \rm]!
+T       add             \rn, \rn, \rm
+T       strh            \rt, [\rn]
+.endm
+
+.macro  strh_dpre       rt,  rn,  rm
+A       strh            \rt, [\rn, -\rm]!
+T       sub             \rn, \rn, \rm
+T       strh            \rt, [\rn]
+.endm
+
+.macro  strh_post       rt,  rn,  rm
+A       strh            \rt, [\rn], \rm
+T       strh            \rt, [\rn]
+T       add             \rn, \rn, \rm
+.endm
+
+.macro  strh_dpost       rt,  rn,  rm
+A       strh            \rt, [\rn], -\rm
+T       strh            \rt, [\rn]
+T       sub             \rn, \rn, \rm
+.endm
+
+#if HAVE_VFP_ARGS
+ELF     .eabi_attribute 28, 1
+#   define VFP
+#   define NOVFP @
+#else
+#   define VFP   @
+#   define NOVFP
+#endif
+
+#define GLUE(a, b) a ## b
+#define JOIN(a, b) GLUE(a, b)
+#define X(s) JOIN(EXTERN_ASM, s)
diff --git a/media/ffvpx/libavutil/arm/bswap.h b/media/ffvpx/libavutil/arm/bswap.h
new file mode 100644
index 0000000000..611ff0ad5b
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/bswap.h
@@ -0,0 +1,67 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_ARM_BSWAP_H
+#define AVUTIL_ARM_BSWAP_H
+
+#include <stdint.h>
+#include "config.h"
+#include "libavutil/attributes.h"
+
+#ifdef __ARMCC_VERSION
+
+#if HAVE_ARMV6
+#define av_bswap32 av_bswap32
+static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
+{
+    return __rev(x);
+}
+#endif /* HAVE_ARMV6 */
+
+#elif HAVE_INLINE_ASM
+
+#if HAVE_ARMV6_INLINE
+#define av_bswap16 av_bswap16
+static av_always_inline av_const unsigned av_bswap16(unsigned x)
+{
+    __asm__("rev16 %0, %0" : "+r"(x));
+    return x;
+}
+#endif
+
+#if AV_GCC_VERSION_AT_MOST(4,4)
+#define av_bswap32 av_bswap32
+static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
+{
+#if HAVE_ARMV6_INLINE
+    __asm__("rev %0, %0" : "+r"(x));
+#else
+    uint32_t t;
+    __asm__ ("eor %1, %0, %0, ror #16 \n\t"
+             "bic %1, %1, #0xFF0000   \n\t"
+             "mov %0, %0, ror #8      \n\t"
+             "eor %0, %0, %1, lsr #8  \n\t"
+             : "+r"(x), "=&r"(t));
+#endif /* HAVE_ARMV6_INLINE */
+    return x;
+}
+#endif /* AV_GCC_VERSION_AT_MOST(4,4) */
+
+#endif /* __ARMCC_VERSION */
+
+#endif /* AVUTIL_ARM_BSWAP_H */
diff --git a/media/ffvpx/libavutil/arm/cpu.c b/media/ffvpx/libavutil/arm/cpu.c
new file mode 100644
index 0000000000..81e85e2525
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/cpu.c
@@ -0,0 +1,170 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/cpu.h"
+#include "libavutil/cpu_internal.h"
+#include "config.h"
+
+#define CORE_FLAG(f) \
+    (AV_CPU_FLAG_ ## f * (HAVE_ ## f ## _EXTERNAL || HAVE_ ## f ## _INLINE))
+
+#define CORE_CPU_FLAGS                          \
+    (CORE_FLAG(ARMV5TE) |                       \
+     CORE_FLAG(ARMV6)   |                       \
+     CORE_FLAG(ARMV6T2) |                       \
+     CORE_FLAG(VFP)     |                       \
+     CORE_FLAG(VFPV3)   |                       \
+     CORE_FLAG(NEON))
+
+#if defined __linux__ || defined __ANDROID__
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include "libavutil/avstring.h"
+
+#define AT_HWCAP        16
+
+/* Relevant HWCAP values from kernel headers */
+#define HWCAP_VFP       (1 << 6)
+#define HWCAP_EDSP      (1 << 7)
+#define HWCAP_THUMBEE   (1 << 11)
+#define HWCAP_NEON      (1 << 12)
+#define HWCAP_VFPv3     (1 << 13)
+#define HWCAP_TLS       (1 << 15)
+
+static int get_hwcap(uint32_t *hwcap)
+{
+    struct { uint32_t a_type; uint32_t a_val; } auxv;
+    FILE *f = fopen("/proc/self/auxv", "r");
+    int err = -1;
+
+    if (!f)
+        return -1;
+
+    while (fread(&auxv, sizeof(auxv), 1, f) > 0) {
+        if (auxv.a_type == AT_HWCAP) {
+            *hwcap = auxv.a_val;
+            err = 0;
+            break;
+        }
+    }
+
+    fclose(f);
+    return err;
+}
+
+static int get_cpuinfo(uint32_t *hwcap)
+{
+    FILE *f = fopen("/proc/cpuinfo", "r");
+    char buf[200];
+
+    if (!f)
+        return -1;
+
+    *hwcap = 0;
+    while (fgets(buf, sizeof(buf), f)) {
+        if (av_strstart(buf, "Features", NULL)) {
+            if (strstr(buf, " edsp "))
+                *hwcap |= HWCAP_EDSP;
+            if (strstr(buf, " tls "))
+                *hwcap |= HWCAP_TLS;
+            if (strstr(buf, " thumbee "))
+                *hwcap |= HWCAP_THUMBEE;
+            if (strstr(buf, " vfp "))
+                *hwcap |= HWCAP_VFP;
+            if (strstr(buf, " vfpv3 "))
+                *hwcap |= HWCAP_VFPv3;
+            if (strstr(buf, " neon ") || strstr(buf, " asimd "))
+                *hwcap |= HWCAP_NEON;
+            if (strstr(buf, " fp ")) // Listed on 64 bit ARMv8 kernels
+                *hwcap |= HWCAP_VFP | HWCAP_VFPv3;
+            break;
+        }
+    }
+    fclose(f);
+    return 0;
+}
+
+int ff_get_cpu_flags_arm(void)
+{
+    int flags = CORE_CPU_FLAGS;
+    uint32_t hwcap;
+
+    if (get_hwcap(&hwcap) < 0)
+        if (get_cpuinfo(&hwcap) < 0)
+            return flags;
+
+#define check_cap(cap, flag) do {               \
+        if (hwcap & HWCAP_ ## cap)              \
+            flags |= AV_CPU_FLAG_ ## flag;      \
+    } while (0)
+
+    /* No flags explicitly indicate v6 or v6T2 so check others which
+       imply support. */
+    check_cap(EDSP,    ARMV5TE);
+    check_cap(TLS,     ARMV6);
+    check_cap(THUMBEE, ARMV6T2);
+    check_cap(VFP,     VFP);
+    check_cap(VFPv3,   VFPV3);
+    check_cap(NEON,    NEON);
+
+    /* The v6 checks above are not reliable so let higher flags
+       trickle down. */
+    if (flags & (AV_CPU_FLAG_VFPV3 | AV_CPU_FLAG_NEON))
+        flags |= AV_CPU_FLAG_ARMV6T2;
+    else if (flags & (AV_CPU_FLAG_ARMV6T2 | AV_CPU_FLAG_ARMV6))
+    /* Some functions use the 'setend' instruction which is deprecated on ARMv8
+     * and serializing on some ARMv7 cores. This ensures such functions
+     * are only enabled on ARMv6. */
+        flags |= AV_CPU_FLAG_SETEND;
+
+    if (flags & AV_CPU_FLAG_ARMV6T2)
+        flags |= AV_CPU_FLAG_ARMV6;
+
+    /* set the virtual VFPv2 vector mode flag */
+    if ((flags & AV_CPU_FLAG_VFP) && !(flags & (AV_CPU_FLAG_VFPV3 | AV_CPU_FLAG_NEON)))
+        flags |= AV_CPU_FLAG_VFP_VM;
+
+    return flags;
+}
+
+#else
+
+int ff_get_cpu_flags_arm(void)
+{
+    return AV_CPU_FLAG_ARMV5TE * HAVE_ARMV5TE |
+           AV_CPU_FLAG_ARMV6   * HAVE_ARMV6   |
+           AV_CPU_FLAG_ARMV6T2 * HAVE_ARMV6T2 |
+           AV_CPU_FLAG_VFP     * HAVE_VFP     |
+           AV_CPU_FLAG_VFPV3   * HAVE_VFPV3   |
+           AV_CPU_FLAG_NEON    * HAVE_NEON    |
+           AV_CPU_FLAG_SETEND  * !(HAVE_NEON | HAVE_VFPV3);
+}
+
+#endif
+
+size_t ff_get_cpu_max_align_arm(void)
+{
+    int flags = av_get_cpu_flags();
+
+    if (flags & AV_CPU_FLAG_NEON)
+        return 16;
+
+    return 8;
+}
diff --git a/media/ffvpx/libavutil/arm/cpu.h b/media/ffvpx/libavutil/arm/cpu.h
new file mode 100644
index 0000000000..1d6cc65dc4
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/cpu.h
@@ -0,0 +1,38 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_ARM_CPU_H
+#define AVUTIL_ARM_CPU_H
+
+#include "libavutil/cpu.h"
+#include "libavutil/cpu_internal.h"
+
+#define have_armv5te(flags) CPUEXT(flags, ARMV5TE)
+#define have_armv6(flags)   CPUEXT(flags, ARMV6)
+#define have_armv6t2(flags) CPUEXT(flags, ARMV6T2)
+#define have_vfp(flags)     CPUEXT(flags, VFP)
+#define have_vfpv3(flags)   CPUEXT(flags, VFPV3)
+#define have_neon(flags)    CPUEXT(flags, NEON)
+#define have_setend(flags)  CPUEXT(flags, SETEND)
+
+/* some functions use the VFPv2 vector mode which is deprecated in ARMv7-A
+ * and might trap on such CPU depending on the OS configuration */
+#define have_vfp_vm(flags)                                              \
+    (HAVE_VFP && ((flags) & AV_CPU_FLAG_VFP_VM))
+
+#endif /* AVUTIL_ARM_CPU_H */
diff --git a/media/ffvpx/libavutil/arm/float_dsp_arm.h b/media/ffvpx/libavutil/arm/float_dsp_arm.h
new file mode 100644
index 0000000000..fe311cc0d2
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/float_dsp_arm.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_ARM_FLOAT_DSP_ARM_H
+#define AVUTIL_ARM_FLOAT_DSP_ARM_H
+
+#include "libavutil/float_dsp.h"
+
+void ff_float_dsp_init_vfp(AVFloatDSPContext *fdsp, int cpu_flags);
+void ff_float_dsp_init_neon(AVFloatDSPContext *fdsp);
+
+#endif /* AVUTIL_ARM_FLOAT_DSP_ARM_H */
diff --git a/media/ffvpx/libavutil/arm/float_dsp_init_arm.c b/media/ffvpx/libavutil/arm/float_dsp_init_arm.c
new file mode 100644
index 0000000000..678762862e
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/float_dsp_init_arm.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/float_dsp.h"
+#include "cpu.h"
+#include "float_dsp_arm.h"
+
+av_cold void ff_float_dsp_init_arm(AVFloatDSPContext *fdsp)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (have_vfp(cpu_flags))
+        ff_float_dsp_init_vfp(fdsp, cpu_flags);
+    if (have_neon(cpu_flags))
+        ff_float_dsp_init_neon(fdsp);
+}
diff --git a/media/ffvpx/libavutil/arm/float_dsp_init_neon.c b/media/ffvpx/libavutil/arm/float_dsp_init_neon.c
new file mode 100644
index 0000000000..689aa77c7b
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/float_dsp_init_neon.c
@@ -0,0 +1,59 @@
+/*
+ * ARM NEON optimised Float DSP functions
+ * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+
+#include "libavutil/attributes.h"
+#include "libavutil/float_dsp.h"
+#include "float_dsp_arm.h"
+
+void ff_vector_fmul_neon(float *dst, const float *src0, const float *src1, int len);
+
+void ff_vector_fmac_scalar_neon(float *dst, const float *src, float mul,
+                                int len);
+
+void ff_vector_fmul_scalar_neon(float *dst, const float *src, float mul,
+                                int len);
+
+void ff_vector_fmul_window_neon(float *dst, const float *src0,
+                                const float *src1, const float *win, int len);
+
+void ff_vector_fmul_add_neon(float *dst, const float *src0, const float *src1,
+                             const float *src2, int len);
+
+void ff_vector_fmul_reverse_neon(float *dst, const float *src0,
+                                 const float *src1, int len);
+
+void ff_butterflies_float_neon(float *v1, float *v2, int len);
+
+float ff_scalarproduct_float_neon(const float *v1, const float *v2, int len);
+
+av_cold void ff_float_dsp_init_neon(AVFloatDSPContext *fdsp)
+{
+    fdsp->vector_fmul = ff_vector_fmul_neon;
+    fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_neon;
+    fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_neon;
+    fdsp->vector_fmul_window = ff_vector_fmul_window_neon;
+    fdsp->vector_fmul_add    = ff_vector_fmul_add_neon;
+    fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_neon;
+    fdsp->butterflies_float = ff_butterflies_float_neon;
+    fdsp->scalarproduct_float = ff_scalarproduct_float_neon;
+}
diff --git a/media/ffvpx/libavutil/arm/float_dsp_init_vfp.c b/media/ffvpx/libavutil/arm/float_dsp_init_vfp.c
new file mode 100644
index 0000000000..05873e7e37
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/float_dsp_init_vfp.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2008 Siarhei Siamashka <ssvb@users.sourceforge.net>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/float_dsp.h"
+#include "cpu.h"
+#include "float_dsp_arm.h"
+
+void ff_vector_fmul_vfp(float *dst, const float *src0, const float *src1,
+                        int len);
+
+void ff_vector_fmul_window_vfp(float *dst, const float *src0,
+                               const float *src1, const float *win, int len);
+
+void ff_vector_fmul_reverse_vfp(float *dst, const float *src0,
+                                const float *src1, int len);
+
+void ff_butterflies_float_vfp(float *av_restrict v1, float *av_restrict v2, int len);
+
+av_cold void ff_float_dsp_init_vfp(AVFloatDSPContext *fdsp, int cpu_flags)
+{
+    if (have_vfp_vm(cpu_flags)) {
+        fdsp->vector_fmul = ff_vector_fmul_vfp;
+        fdsp->vector_fmul_window = ff_vector_fmul_window_vfp;
+    }
+    fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_vfp;
+    if (have_vfp_vm(cpu_flags))
+        fdsp->butterflies_float = ff_butterflies_float_vfp;
+}
diff --git a/media/ffvpx/libavutil/arm/float_dsp_neon.S b/media/ffvpx/libavutil/arm/float_dsp_neon.S
new file mode 100644
index 0000000000..3823227608
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/float_dsp_neon.S
@@ -0,0 +1,271 @@
+/*
+ * ARM NEON optimised Float DSP functions
+ * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "asm.S"
+
+function ff_vector_fmul_neon, export=1
+        subs            r3,  r3,  #8
+        vld1.32         {d0-d3},  [r1,:128]!
+        vld1.32         {d4-d7},  [r2,:128]!
+        vmul.f32        q8,  q0,  q2
+        vmul.f32        q9,  q1,  q3
+        beq             3f
+        bics            ip,  r3,  #15
+        beq             2f
+1:      subs            ip,  ip,  #16
+        vld1.32         {d0-d1},  [r1,:128]!
+        vld1.32         {d4-d5},  [r2,:128]!
+        vmul.f32        q10, q0,  q2
+        vld1.32         {d2-d3},  [r1,:128]!
+        vld1.32         {d6-d7},  [r2,:128]!
+        vmul.f32        q11, q1,  q3
+        vst1.32         {d16-d19},[r0,:128]!
+        vld1.32         {d0-d1},  [r1,:128]!
+        vld1.32         {d4-d5},  [r2,:128]!
+        vmul.f32        q8,  q0,  q2
+        vld1.32         {d2-d3},  [r1,:128]!
+        vld1.32         {d6-d7},  [r2,:128]!
+        vmul.f32        q9,  q1,  q3
+        vst1.32         {d20-d23},[r0,:128]!
+        bne             1b
+        ands            r3,  r3,  #15
+        beq             3f
+2:      vld1.32         {d0-d1},  [r1,:128]!
+        vld1.32         {d4-d5},  [r2,:128]!
+        vst1.32         {d16-d17},[r0,:128]!
+        vmul.f32        q8,  q0,  q2
+        vld1.32         {d2-d3},  [r1,:128]!
+        vld1.32         {d6-d7},  [r2,:128]!
+        vst1.32         {d18-d19},[r0,:128]!
+        vmul.f32        q9,  q1,  q3
+3:      vst1.32         {d16-d19},[r0,:128]!
+        bx              lr
+endfunc
+
+function ff_vector_fmac_scalar_neon, export=1
+VFP     len .req r2
+VFP     acc .req r3
+NOVFP   len .req r3
+NOVFP   acc .req r2
+VFP     vdup.32         q15, d0[0]
+NOVFP   vdup.32         q15, r2
+        bics            r12, len, #15
+        mov             acc, r0
+        beq             3f
+        vld1.32         {q0},     [r1,:128]!
+        vld1.32         {q8},     [acc,:128]!
+        vld1.32         {q1},     [r1,:128]!
+        vld1.32         {q9},     [acc,:128]!
+1:      vmla.f32        q8,  q0,  q15
+        vld1.32         {q2},     [r1,:128]!
+        vld1.32         {q10},    [acc,:128]!
+        vmla.f32        q9,  q1,  q15
+        vld1.32         {q3},     [r1,:128]!
+        vld1.32         {q11},    [acc,:128]!
+        vmla.f32        q10, q2,  q15
+        vst1.32         {q8},     [r0,:128]!
+        vmla.f32        q11, q3,  q15
+        vst1.32         {q9},     [r0,:128]!
+        subs            r12, r12, #16
+        beq             2f
+        vld1.32         {q0},     [r1,:128]!
+        vld1.32         {q8},     [acc,:128]!
+        vst1.32         {q10},    [r0,:128]!
+        vld1.32         {q1},     [r1,:128]!
+        vld1.32         {q9},     [acc,:128]!
+        vst1.32         {q11},    [r0,:128]!
+        b               1b
+2:      vst1.32         {q10},    [r0,:128]!
+        vst1.32         {q11},    [r0,:128]!
+        ands            len, len, #15
+        it              eq
+        bxeq            lr
+3:      vld1.32         {q0},     [r1,:128]!
+        vld1.32         {q8},     [acc,:128]!
+        vmla.f32        q8,  q0,  q15
+        vst1.32         {q8},     [r0,:128]!
+        subs            len, len, #4
+        bgt             3b
+        bx              lr
+        .unreq          len
+endfunc
+
+function ff_vector_fmul_scalar_neon, export=1
+VFP     len .req r2
+NOVFP   len .req r3
+VFP     vdup.32         q8,  d0[0]
+NOVFP   vdup.32         q8,  r2
+        bics            r12, len, #15
+        beq             3f
+        vld1.32         {q0},[r1,:128]!
+        vld1.32         {q1},[r1,:128]!
+1:      vmul.f32        q0,  q0,  q8
+        vld1.32         {q2},[r1,:128]!
+        vmul.f32        q1,  q1,  q8
+        vld1.32         {q3},[r1,:128]!
+        vmul.f32        q2,  q2,  q8
+        vst1.32         {q0},[r0,:128]!
+        vmul.f32        q3,  q3,  q8
+        vst1.32         {q1},[r0,:128]!
+        subs            r12, r12, #16
+        beq             2f
+        vld1.32         {q0},[r1,:128]!
+        vst1.32         {q2},[r0,:128]!
+        vld1.32         {q1},[r1,:128]!
+        vst1.32         {q3},[r0,:128]!
+        b               1b
+2:      vst1.32         {q2},[r0,:128]!
+        vst1.32         {q3},[r0,:128]!
+        ands            len, len, #15
+        it              eq
+        bxeq            lr
+3:      vld1.32         {q0},[r1,:128]!
+        vmul.f32        q0,  q0,  q8
+        vst1.32         {q0},[r0,:128]!
+        subs            len, len, #4
+        bgt             3b
+        bx              lr
+        .unreq          len
+endfunc
+
+function ff_vector_fmul_window_neon, export=1
+        push            {r4,r5,lr}
+        ldr             lr,  [sp, #12]
+        sub             r2,  r2,  #8
+        sub             r5,  lr,  #2
+        add             r2,  r2,  r5, lsl #2
+        add             r4,  r3,  r5, lsl #3
+        add             ip,  r0,  r5, lsl #3
+        mov             r5,  #-16
+        vld1.32         {d0,d1},  [r1,:128]!
+        vld1.32         {d2,d3},  [r2,:128], r5
+        vld1.32         {d4,d5},  [r3,:128]!
+        vld1.32         {d6,d7},  [r4,:128], r5
+1:      subs            lr,  lr,  #4
+        vmul.f32        d22, d0,  d4
+        vrev64.32       q3,  q3
+        vmul.f32        d23, d1,  d5
+        vrev64.32       q1,  q1
+        vmul.f32        d20, d0,  d7
+        vmul.f32        d21, d1,  d6
+        beq             2f
+        vmla.f32        d22, d3,  d7
+        vld1.32         {d0,d1},  [r1,:128]!
+        vmla.f32        d23, d2,  d6
+        vld1.32         {d18,d19},[r2,:128], r5
+        vmls.f32        d20, d3,  d4
+        vld1.32         {d24,d25},[r3,:128]!
+        vmls.f32        d21, d2,  d5
+        vld1.32         {d6,d7},  [r4,:128], r5
+        vmov            q1,  q9
+        vrev64.32       q11, q11
+        vmov            q2,  q12
+        vswp            d22, d23
+        vst1.32         {d20,d21},[r0,:128]!
+        vst1.32         {d22,d23},[ip,:128], r5
+        b               1b
+2:      vmla.f32        d22, d3,  d7
+        vmla.f32        d23, d2,  d6
+        vmls.f32        d20, d3,  d4
+        vmls.f32        d21, d2,  d5
+        vrev64.32       q11, q11
+        vswp            d22, d23
+        vst1.32         {d20,d21},[r0,:128]!
+        vst1.32         {d22,d23},[ip,:128], r5
+        pop             {r4,r5,pc}
+endfunc
+
+function ff_vector_fmul_add_neon, export=1
+        ldr             r12, [sp]
+        vld1.32         {q0-q1},  [r1,:128]!
+        vld1.32         {q8-q9},  [r2,:128]!
+        vld1.32         {q2-q3},  [r3,:128]!
+        vmul.f32        q10, q0,  q8
+        vmul.f32        q11, q1,  q9
+1:      vadd.f32        q12, q2,  q10
+        vadd.f32        q13, q3,  q11
+        pld             [r1, #16]
+        pld             [r2, #16]
+        pld             [r3, #16]
+        subs            r12, r12, #8
+        beq             2f
+        vld1.32         {q0},     [r1,:128]!
+        vld1.32         {q8},     [r2,:128]!
+        vmul.f32        q10, q0,  q8
+        vld1.32         {q1},     [r1,:128]!
+        vld1.32         {q9},     [r2,:128]!
+        vmul.f32        q11, q1,  q9
+        vld1.32         {q2-q3},  [r3,:128]!
+        vst1.32         {q12-q13},[r0,:128]!
+        b               1b
+2:      vst1.32         {q12-q13},[r0,:128]!
+        bx              lr
+endfunc
+
+function ff_vector_fmul_reverse_neon, export=1
+        add             r2,  r2,  r3,  lsl #2
+        sub             r2,  r2,  #32
+        mov             r12, #-32
+        vld1.32         {q0-q1},  [r1,:128]!
+        vld1.32         {q2-q3},  [r2,:128], r12
+1:      pld             [r1, #32]
+        vrev64.32       q3,  q3
+        vmul.f32        d16, d0,  d7
+        vmul.f32        d17, d1,  d6
+        pld             [r2, #-32]
+        vrev64.32       q2,  q2
+        vmul.f32        d18, d2,  d5
+        vmul.f32        d19, d3,  d4
+        subs            r3,  r3,  #8
+        beq             2f
+        vld1.32         {q0-q1},  [r1,:128]!
+        vld1.32         {q2-q3},  [r2,:128], r12
+        vst1.32         {q8-q9},  [r0,:128]!
+        b               1b
+2:      vst1.32         {q8-q9},  [r0,:128]!
+        bx              lr
+endfunc
+
+function ff_butterflies_float_neon, export=1
+1:      vld1.32         {q0},[r0,:128]
+        vld1.32         {q1},[r1,:128]
+        vsub.f32        q2,  q0,  q1
+        vadd.f32        q1,  q0,  q1
+        vst1.32         {q2},[r1,:128]!
+        vst1.32         {q1},[r0,:128]!
+        subs            r2,  r2,  #4
+        bgt             1b
+        bx              lr
+endfunc
+
+function ff_scalarproduct_float_neon, export=1
+        vmov.f32        q2,  #0.0
+1:      vld1.32         {q0},[r0,:128]!
+        vld1.32         {q1},[r1,:128]!
+        vmla.f32        q2,  q0,  q1
+        subs            r2,  r2,  #4
+        bgt             1b
+        vadd.f32        d0,  d4,  d5
+        vpadd.f32       d0,  d0,  d0
+NOVFP   vmov.32         r0,  d0[0]
+        bx              lr
+endfunc
diff --git a/media/ffvpx/libavutil/arm/float_dsp_vfp.S b/media/ffvpx/libavutil/arm/float_dsp_vfp.S
new file mode 100644
index 0000000000..7db2452284
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/float_dsp_vfp.S
@@ -0,0 +1,457 @@
+/*
+ * Copyright (c) 2008 Siarhei Siamashka <ssvb@users.sourceforge.net>
+ *
+ * This file is part of FFmpeg
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "asm.S"
+
+/**
+ * Assume that len is a positive number and is multiple of 8
+ */
+@ void ff_vector_fmul_vfp(float *dst, const float *src0, const float *src1, int len)
+function ff_vector_fmul_vfp, export=1
+        vpush           {d8-d15}
+        fmrx            r12, fpscr
+        orr             r12, r12, #(3 << 16) /* set vector size to 4 */
+        fmxr            fpscr, r12
+
+        vldmia          r1!, {s0-s3}
+        vldmia          r2!, {s8-s11}
+        vldmia          r1!, {s4-s7}
+        vldmia          r2!, {s12-s15}
+        vmul.f32        s8,  s0,  s8
+1:
+        subs            r3,  r3,  #16
+        vmul.f32        s12, s4,  s12
+        itttt           ge
+        vldmiage        r1!, {s16-s19}
+        vldmiage        r2!, {s24-s27}
+        vldmiage        r1!, {s20-s23}
+        vldmiage        r2!, {s28-s31}
+        it              ge
+        vmulge.f32      s24, s16, s24
+        vstmia          r0!, {s8-s11}
+        vstmia          r0!, {s12-s15}
+        it              ge
+        vmulge.f32      s28, s20, s28
+        itttt           gt
+        vldmiagt        r1!, {s0-s3}
+        vldmiagt        r2!, {s8-s11}
+        vldmiagt        r1!, {s4-s7}
+        vldmiagt        r2!, {s12-s15}
+        ittt            ge
+        vmulge.f32      s8,  s0,  s8
+        vstmiage        r0!, {s24-s27}
+        vstmiage        r0!, {s28-s31}
+        bgt             1b
+
+        bic             r12, r12, #(7 << 16) /* set vector size back to 1 */
+        fmxr            fpscr, r12
+        vpop            {d8-d15}
+        bx              lr
+endfunc
+
+/**
+ * ARM VFP implementation of 'vector_fmul_window_c' function
+ * Assume that len is a positive non-zero number
+ */
+@ void ff_vector_fmul_window_vfp(float *dst, const float *src0,
+@                                const float *src1, const float *win, int len)
+function ff_vector_fmul_window_vfp, export=1
+DST0    .req    a1
+SRC0    .req    a2
+SRC1    .req    a3
+WIN0    .req    a4
+LEN     .req    v1
+DST1    .req    v2
+WIN1    .req    v3
+OLDFPSCR .req   ip
+
+        push    {v1-v3,lr}
+        ldr     LEN, [sp, #4*4+0]
+        vpush   {s16-s31}
+        fmrx    OLDFPSCR, FPSCR
+        add     DST1, DST0, LEN, lsl #3
+        add     SRC1, SRC1, LEN, lsl #2
+        add     WIN1, WIN0, LEN, lsl #3
+
+        tst     LEN, #7
+        beq     4f                          @ common case: len is a multiple of 8
+
+        ldr     lr, =0x03000000             @ RunFast mode, scalar mode
+        fmxr    FPSCR, lr
+
+        tst     LEN, #1
+        beq     1f
+        vldmdb  WIN1!, {s0}
+        vldmia  SRC0!, {s8}
+        vldmia  WIN0!, {s16}
+        vmul.f  s24, s0, s8
+        vldmdb  SRC1!, {s20}
+        vmul.f  s8, s16, s8
+        vmls.f  s24, s16, s20
+        vmla.f  s8, s0, s20
+        vstmia  DST0!, {s24}
+        vstmdb  DST1!, {s8}
+1:
+        tst     LEN, #2
+        beq     2f
+        vldmdb  WIN1!, {s0}
+        vldmdb  WIN1!, {s1}
+        vldmia  SRC0!, {s8-s9}
+        vldmia  WIN0!, {s16-s17}
+        vmul.f  s24, s0, s8
+        vmul.f  s25, s1, s9
+        vldmdb  SRC1!, {s20}
+        vldmdb  SRC1!, {s21}
+        vmul.f  s8, s16, s8
+        vmul.f  s9, s17, s9
+        vmls.f  s24, s16, s20
+        vmls.f  s25, s17, s21
+        vmla.f  s8, s0, s20
+        vmla.f  s9, s1, s21
+        vstmia  DST0!, {s24-s25}
+        vstmdb  DST1!, {s8}
+        vstmdb  DST1!, {s9}
+2:
+        tst     LEN, #4
+        beq     3f
+        vldmdb  WIN1!, {s0}
+        vldmdb  WIN1!, {s1}
+        vldmdb  WIN1!, {s2}
+        vldmdb  WIN1!, {s3}
+        vldmia  SRC0!, {s8-s11}
+        vldmia  WIN0!, {s16-s19}
+        vmul.f  s24, s0, s8
+        vmul.f  s25, s1, s9
+        vmul.f  s26, s2, s10
+        vmul.f  s27, s3, s11
+        vldmdb  SRC1!, {s20}
+        vldmdb  SRC1!, {s21}
+        vldmdb  SRC1!, {s22}
+        vldmdb  SRC1!, {s23}
+        vmul.f  s8, s16, s8
+        vmul.f  s9, s17, s9
+        vmul.f  s10, s18, s10
+        vmul.f  s11, s19, s11
+        vmls.f  s24, s16, s20
+        vmls.f  s25, s17, s21
+        vmls.f  s26, s18, s22
+        vmls.f  s27, s19, s23
+        vmla.f  s8, s0, s20
+        vmla.f  s9, s1, s21
+        vmla.f  s10, s2, s22
+        vmla.f  s11, s3, s23
+        vstmia  DST0!, {s24-s27}
+        vstmdb  DST1!, {s8}
+        vstmdb  DST1!, {s9}
+        vstmdb  DST1!, {s10}
+        vstmdb  DST1!, {s11}
+3:
+        bics    LEN, LEN, #7
+        beq     7f
+4:
+        ldr     lr, =0x03030000             @ RunFast mode, short vectors of length 4, stride 1
+        fmxr    FPSCR, lr
+
+        vldmdb  WIN1!, {s0}
+        vldmdb  WIN1!, {s1}
+        vldmdb  WIN1!, {s2}
+        vldmdb  WIN1!, {s3}
+        vldmia  SRC0!, {s8-s11}
+        vldmia  WIN0!, {s16-s19}
+        vmul.f  s24, s0, s8                     @ vector * vector
+        vldmdb  SRC1!, {s20}
+        vldmdb  SRC1!, {s21}
+        vldmdb  SRC1!, {s22}
+        vldmdb  SRC1!, {s23}
+        vmul.f  s8, s16, s8                     @ vector * vector
+        vmls.f  s24, s16, s20                   @ vector * vector
+            vldmdb  WIN1!, {s4}
+            vldmdb  WIN1!, {s5}
+            vldmdb  WIN1!, {s6}
+            vldmdb  WIN1!, {s7}
+            vldmia  SRC0!, {s12-s13}
+        vmla.f  s8, s0, s20                     @ vector * vector
+            vldmia  SRC0!, {s14-s15}
+        subs    LEN, LEN, #8
+        beq     6f
+5:          vldmia  WIN0!, {s20-s23}
+            vmul.f  s28, s4, s12                @ vector * vector
+        vstmia  DST0!, {s24-s25}
+            vldmdb  SRC1!, {s16}
+            vldmdb  SRC1!, {s17}
+            vldmdb  SRC1!, {s18}
+            vldmdb  SRC1!, {s19}
+            vmul.f  s12, s20, s12               @ vector * vector
+        vstmia  DST0!, {s26-s27}
+        vstmdb  DST1!, {s8}
+        vstmdb  DST1!, {s9}
+        vstmdb  DST1!, {s10}
+        vstmdb  DST1!, {s11}
+            vmls.f  s28, s20, s16               @ vector * vector
+                vldmdb  WIN1!, {s0}
+                vldmdb  WIN1!, {s1}
+                vldmdb  WIN1!, {s2}
+                vldmdb  WIN1!, {s3}
+                vldmia  SRC0!, {s8-s9}
+            vmla.f  s12, s4, s16                @ vector * vector
+                vldmia  SRC0!, {s10-s11}
+        subs    LEN, LEN, #8
+                vldmia  WIN0!, {s16-s19}
+                vmul.f  s24, s0, s8             @ vector * vector
+            vstmia  DST0!, {s28-s29}
+                vldmdb  SRC1!, {s20}
+                vldmdb  SRC1!, {s21}
+                vldmdb  SRC1!, {s22}
+                vldmdb  SRC1!, {s23}
+                vmul.f  s8, s16, s8             @ vector * vector
+            vstmia  DST0!, {s30-s31}
+            vstmdb  DST1!, {s12}
+            vstmdb  DST1!, {s13}
+            vstmdb  DST1!, {s14}
+            vstmdb  DST1!, {s15}
+                vmls.f  s24, s16, s20           @ vector * vector
+                    vldmdb  WIN1!, {s4}
+                    vldmdb  WIN1!, {s5}
+                    vldmdb  WIN1!, {s6}
+                    vldmdb  WIN1!, {s7}
+                    vldmia  SRC0!, {s12-s13}
+                vmla.f  s8, s0, s20             @ vector * vector
+                    vldmia  SRC0!, {s14-s15}
+        bne     5b
+6:                  vldmia  WIN0!, {s20-s23}
+                    vmul.f  s28, s4, s12        @ vector * vector
+                vstmia  DST0!, {s24-s25}
+                    vldmdb  SRC1!, {s16}
+                    vldmdb  SRC1!, {s17}
+                    vldmdb  SRC1!, {s18}
+                    vldmdb  SRC1!, {s19}
+                    vmul.f  s12, s20, s12       @ vector * vector
+                vstmia  DST0!, {s26-s27}
+                vstmdb  DST1!, {s8}
+                vstmdb  DST1!, {s9}
+                vstmdb  DST1!, {s10}
+                vstmdb  DST1!, {s11}
+                    vmls.f  s28, s20, s16       @ vector * vector
+                    vmla.f  s12, s4, s16        @ vector * vector
+                    vstmia  DST0!, {s28-s31}
+                    vstmdb  DST1!, {s12}
+                    vstmdb  DST1!, {s13}
+                    vstmdb  DST1!, {s14}
+                    vstmdb  DST1!, {s15}
+7:
+        fmxr    FPSCR, OLDFPSCR
+        vpop    {s16-s31}
+        pop     {v1-v3,pc}
+
+        .unreq  DST0
+        .unreq  SRC0
+        .unreq  SRC1
+        .unreq  WIN0
+        .unreq  LEN
+        .unreq  OLDFPSCR
+        .unreq  DST1
+        .unreq  WIN1
+endfunc
+
+/**
+ * ARM VFP optimized implementation of 'vector_fmul_reverse_c' function.
+ * Assume that len is a positive number and is multiple of 8
+ */
+@ void ff_vector_fmul_reverse_vfp(float *dst, const float *src0,
+@                                 const float *src1, int len)
+function ff_vector_fmul_reverse_vfp, export=1
+        vpush           {d8-d15}
+        add             r2,  r2,  r3, lsl #2
+        vldmdb          r2!, {s0-s3}
+        vldmia          r1!, {s8-s11}
+        vldmdb          r2!, {s4-s7}
+        vldmia          r1!, {s12-s15}
+        vmul.f32        s8,  s3,  s8
+        vmul.f32        s9,  s2,  s9
+        vmul.f32        s10, s1,  s10
+        vmul.f32        s11, s0,  s11
+1:
+        subs            r3,  r3,  #16
+        it              ge
+        vldmdbge        r2!, {s16-s19}
+        vmul.f32        s12, s7,  s12
+        it              ge
+        vldmiage        r1!, {s24-s27}
+        vmul.f32        s13, s6,  s13
+        it              ge
+        vldmdbge        r2!, {s20-s23}
+        vmul.f32        s14, s5,  s14
+        it              ge
+        vldmiage        r1!, {s28-s31}
+        vmul.f32        s15, s4,  s15
+        it              ge
+        vmulge.f32      s24, s19, s24
+        it              gt
+        vldmdbgt        r2!, {s0-s3}
+        it              ge
+        vmulge.f32      s25, s18, s25
+        vstmia          r0!, {s8-s13}
+        it              ge
+        vmulge.f32      s26, s17, s26
+        it              gt
+        vldmiagt        r1!, {s8-s11}
+        itt             ge
+        vmulge.f32      s27, s16, s27
+        vmulge.f32      s28, s23, s28
+        it              gt
+        vldmdbgt        r2!, {s4-s7}
+        it              ge
+        vmulge.f32      s29, s22, s29
+        vstmia          r0!, {s14-s15}
+        ittt            ge
+        vmulge.f32      s30, s21, s30
+        vmulge.f32      s31, s20, s31
+        vmulge.f32      s8,  s3,  s8
+        it              gt
+        vldmiagt        r1!, {s12-s15}
+        itttt           ge
+        vmulge.f32      s9,  s2,  s9
+        vmulge.f32      s10, s1,  s10
+        vstmiage        r0!, {s24-s27}
+        vmulge.f32      s11, s0,  s11
+        it              ge
+        vstmiage        r0!, {s28-s31}
+        bgt             1b
+
+        vpop            {d8-d15}
+        bx              lr
+endfunc
+
+/**
+ * ARM VFP implementation of 'butterflies_float_c' function
+ * Assume that len is a positive non-zero number
+ */
+@ void ff_butterflies_float_vfp(float *restrict v1, float *restrict v2, int len)
+function ff_butterflies_float_vfp, export=1
+BASE1   .req    a1
+BASE2   .req    a2
+LEN     .req    a3
+OLDFPSCR .req   a4
+
+        vpush   {s16-s31}
+        fmrx    OLDFPSCR, FPSCR
+
+        tst     LEN, #7
+        beq     4f                          @ common case: len is a multiple of 8
+
+        ldr     ip, =0x03000000             @ RunFast mode, scalar mode
+        fmxr    FPSCR, ip
+
+        tst     LEN, #1
+        beq     1f
+        vldmia  BASE1!, {s0}
+        vldmia  BASE2!, {s8}
+        vadd.f  s16, s0, s8
+        vsub.f  s24, s0, s8
+        vstr    s16, [BASE1, #0-4*1]
+        vstr    s24, [BASE2, #0-4*1]
+1:
+        tst     LEN, #2
+        beq     2f
+        vldmia  BASE1!, {s0-s1}
+        vldmia  BASE2!, {s8-s9}
+        vadd.f  s16, s0, s8
+        vadd.f  s17, s1, s9
+        vsub.f  s24, s0, s8
+        vsub.f  s25, s1, s9
+        vstr    d8, [BASE1, #0-8*1]    @ s16,s17
+        vstr    d12, [BASE2, #0-8*1]   @ s24,s25
+2:
+        tst     LEN, #4
+        beq     3f
+        vldmia  BASE1!, {s0-s1}
+        vldmia  BASE2!, {s8-s9}
+        vldmia  BASE1!, {s2-s3}
+        vldmia  BASE2!, {s10-s11}
+        vadd.f  s16, s0, s8
+        vadd.f  s17, s1, s9
+        vsub.f  s24, s0, s8
+        vsub.f  s25, s1, s9
+        vadd.f  s18, s2, s10
+        vadd.f  s19, s3, s11
+        vsub.f  s26, s2, s10
+        vsub.f  s27, s3, s11
+        vstr    d8, [BASE1, #0-16*1]    @ s16,s17
+        vstr    d12, [BASE2, #0-16*1]   @ s24,s25
+        vstr    d9, [BASE1, #8-16*1]    @ s18,s19
+        vstr    d13, [BASE2, #8-16*1]   @ s26,s27
+3:
+        bics    LEN, LEN, #7
+        beq     7f
+4:
+        ldr     ip, =0x03030000             @ RunFast mode, short vectors of length 4, stride 1
+        fmxr    FPSCR, ip
+
+        vldmia  BASE1!, {s0-s1}
+        vldmia  BASE2!, {s8-s9}
+        vldmia  BASE1!, {s2-s3}
+        vldmia  BASE2!, {s10-s11}
+        vadd.f  s16, s0, s8
+            vldmia  BASE1!, {s4-s5}
+            vldmia  BASE2!, {s12-s13}
+            vldmia  BASE1!, {s6-s7}
+            vldmia  BASE2!, {s14-s15}
+        vsub.f  s24, s0, s8
+            vadd.f  s20, s4, s12
+        subs    LEN, LEN, #8
+        beq     6f
+5:              vldmia  BASE1!, {s0-s3}
+                vldmia  BASE2!, {s8-s11}
+            vsub.f  s28, s4, s12
+        vstr    d8, [BASE1, #0-16*3]    @ s16,s17
+        vstr    d9, [BASE1, #8-16*3]    @ s18,s19
+        vstr    d12, [BASE2, #0-16*3]   @ s24,s25
+        vstr    d13, [BASE2, #8-16*3]   @ s26,s27
+                vadd.f  s16, s0, s8
+                    vldmia  BASE1!, {s4-s7}
+                    vldmia  BASE2!, {s12-s15}
+                vsub.f  s24, s0, s8
+            vstr    d10, [BASE1, #0-16*3]   @ s20,s21
+            vstr    d11, [BASE1, #8-16*3]   @ s22,s23
+            vstr    d14, [BASE2, #0-16*3]   @ s28,s29
+            vstr    d15, [BASE2, #8-16*3]   @ s30,s31
+                    vadd.f  s20, s4, s12
+        subs    LEN, LEN, #8
+        bne     5b
+6:                   vsub.f  s28, s4, s12
+                vstr    d8, [BASE1, #0-16*2]    @ s16,s17
+                vstr    d9, [BASE1, #8-16*2]    @ s18,s19
+                vstr    d12, [BASE2, #0-16*2]   @ s24,s25
+                vstr    d13, [BASE2, #8-16*2]   @ s26,s27
+                    vstr    d10, [BASE1, #0-16*1]   @ s20,s21
+                    vstr    d11, [BASE1, #8-16*1]   @ s22,s23
+                    vstr    d14, [BASE2, #0-16*1]   @ s28,s29
+                    vstr    d15, [BASE2, #8-16*1]   @ s30,s31
+7:
+        fmxr    FPSCR, OLDFPSCR
+        vpop    {s16-s31}
+        bx      lr
+
+        .unreq  BASE1
+        .unreq  BASE2
+        .unreq  LEN
+        .unreq  OLDFPSCR
+endfunc
diff --git a/media/ffvpx/libavutil/arm/intmath.h b/media/ffvpx/libavutil/arm/intmath.h
new file mode 100644
index 0000000000..5311a7d52b
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/intmath.h
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_ARM_INTMATH_H
+#define AVUTIL_ARM_INTMATH_H
+
+#include <stdint.h>
+
+#include "config.h"
+#include "libavutil/attributes.h"
+
+#if HAVE_INLINE_ASM
+
+#if HAVE_ARMV6_INLINE
+
+#define av_clip_uint8 av_clip_uint8_arm
+static av_always_inline av_const int av_clip_uint8_arm(int a)
+{
+    int x;
+    __asm__ ("usat %0, #8,  %1" : "=r"(x) : "r"(a));
+    return x;
+}
+
+#define av_clip_int8 av_clip_int8_arm
+static av_always_inline av_const int av_clip_int8_arm(int a)
+{
+    int x;
+    __asm__ ("ssat %0, #8,  %1" : "=r"(x) : "r"(a));
+    return x;
+}
+
+#define av_clip_uint16 av_clip_uint16_arm
+static av_always_inline av_const int av_clip_uint16_arm(int a)
+{
+    int x;
+    __asm__ ("usat %0, #16, %1" : "=r"(x) : "r"(a));
+    return x;
+}
+
+#define av_clip_int16 av_clip_int16_arm
+static av_always_inline av_const int av_clip_int16_arm(int a)
+{
+    int x;
+    __asm__ ("ssat %0, #16, %1" : "=r"(x) : "r"(a));
+    return x;
+}
+
+#define av_clip_intp2 av_clip_intp2_arm
+static av_always_inline av_const int av_clip_intp2_arm(int a, int p)
+{
+    unsigned x;
+    __asm__ ("ssat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p+1));
+    return x;
+}
+
+#define av_clip_uintp2 av_clip_uintp2_arm
+static av_always_inline av_const unsigned av_clip_uintp2_arm(int a, int p)
+{
+    unsigned x;
+    __asm__ ("usat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p));
+    return x;
+}
+
+#define av_sat_add32 av_sat_add32_arm
+static av_always_inline int av_sat_add32_arm(int a, int b)
+{
+    int r;
+    __asm__ ("qadd %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
+    return r;
+}
+
+#define av_sat_dadd32 av_sat_dadd32_arm
+static av_always_inline int av_sat_dadd32_arm(int a, int b)
+{
+    int r;
+    __asm__ ("qdadd %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
+    return r;
+}
+
+#define av_sat_sub32 av_sat_sub32_arm
+static av_always_inline int av_sat_sub32_arm(int a, int b)
+{
+    int r;
+    __asm__ ("qsub %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
+    return r;
+}
+
+#define av_sat_dsub32 av_sat_dsub32_arm
+static av_always_inline int av_sat_dsub32_arm(int a, int b)
+{
+    int r;
+    __asm__ ("qdsub %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
+    return r;
+}
+
+#endif /* HAVE_ARMV6_INLINE */
+
+#if HAVE_ASM_MOD_Q
+
+#define av_clipl_int32 av_clipl_int32_arm
+static av_always_inline av_const int32_t av_clipl_int32_arm(int64_t a)
+{
+    int x, y;
+    __asm__ ("adds   %1, %R2, %Q2, lsr #31  \n\t"
+             "itet   ne                     \n\t"
+             "mvnne  %1, #1<<31             \n\t"
+             "moveq  %0, %Q2                \n\t"
+             "eorne  %0, %1,  %R2, asr #31  \n\t"
+             : "=r"(x), "=&r"(y) : "r"(a) : "cc");
+    return x;
+}
+
+#endif /* HAVE_ASM_MOD_Q */
+
+#endif /* HAVE_INLINE_ASM */
+
+#endif /* AVUTIL_ARM_INTMATH_H */
diff --git a/media/ffvpx/libavutil/arm/intreadwrite.h b/media/ffvpx/libavutil/arm/intreadwrite.h
new file mode 100644
index 0000000000..60fc860cbb
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/intreadwrite.h
@@ -0,0 +1,91 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_ARM_INTREADWRITE_H
+#define AVUTIL_ARM_INTREADWRITE_H
+
+#include <stdint.h>
+#include "config.h"
+#include "libavutil/attributes.h"
+
+#if HAVE_FAST_UNALIGNED && HAVE_INLINE_ASM && AV_GCC_VERSION_AT_MOST(4,6)
+
+#define AV_RN16 AV_RN16
+static av_always_inline unsigned AV_RN16(const void *p)
+{
+    const uint8_t *q = p;
+    unsigned v;
+#if AV_GCC_VERSION_AT_MOST(4,5)
+    __asm__ ("ldrh %0, %1" : "=r"(v) : "m"(*(const uint16_t *)q));
+#elif defined __thumb__
+    __asm__ ("ldrh %0, %1" : "=r"(v) : "m"(q[0]), "m"(q[1]));
+#else
+    __asm__ ("ldrh %0, %1" : "=r"(v) : "Uq"(q[0]), "m"(q[1]));
+#endif
+    return v;
+}
+
+#define AV_WN16 AV_WN16
+static av_always_inline void AV_WN16(void *p, uint16_t v)
+{
+    __asm__ ("strh %1, %0" : "=m"(*(uint16_t *)p) : "r"(v));
+}
+
+#define AV_RN32 AV_RN32
+static av_always_inline uint32_t AV_RN32(const void *p)
+{
+    const struct __attribute__((packed)) { uint32_t v; } *q = p;
+    uint32_t v;
+    __asm__ ("ldr  %0, %1" : "=r"(v) : "m"(*q));
+    return v;
+}
+
+#define AV_WN32 AV_WN32
+static av_always_inline void AV_WN32(void *p, uint32_t v)
+{
+    __asm__ ("str  %1, %0" : "=m"(*(uint32_t *)p) : "r"(v));
+}
+
+#if HAVE_ASM_MOD_Q
+
+#define AV_RN64 AV_RN64
+static av_always_inline uint64_t AV_RN64(const void *p)
+{
+    const struct __attribute__((packed)) { uint32_t v; } *q = p;
+    uint64_t v;
+    __asm__ ("ldr   %Q0, %1  \n\t"
+             "ldr   %R0, %2  \n\t"
+             : "=&r"(v)
+             : "m"(q[0]), "m"(q[1]));
+    return v;
+}
+
+#define AV_WN64 AV_WN64
+static av_always_inline void AV_WN64(void *p, uint64_t v)
+{
+    __asm__ ("str  %Q2, %0  \n\t"
+             "str  %R2, %1  \n\t"
+             : "=m"(*(uint32_t*)p), "=m"(*((uint32_t*)p+1))
+             : "r"(v));
+}
+
+#endif /* HAVE_ASM_MOD_Q */
+
+#endif /* HAVE_INLINE_ASM */
+
+#endif /* AVUTIL_ARM_INTREADWRITE_H */
diff --git a/media/ffvpx/libavutil/arm/moz.build b/media/ffvpx/libavutil/arm/moz.build
new file mode 100644
index 0000000000..e5f9fb23e3
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/moz.build
@@ -0,0 +1,18 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+SOURCES += [
+    'cpu.c',
+    'float_dsp_init_arm.c',
+    'float_dsp_init_neon.c',
+    'float_dsp_init_vfp.c',
+    'float_dsp_neon.S',
+    'float_dsp_vfp.S',
+]
+
+FINAL_LIBRARY = 'mozavutil'
+
+include('/media/ffvpx/ffvpxcommon.mozbuild')
diff --git a/media/ffvpx/libavutil/arm/timer.h b/media/ffvpx/libavutil/arm/timer.h
new file mode 100644
index 0000000000..5e8bc8edd0
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/timer.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_ARM_TIMER_H
+#define AVUTIL_ARM_TIMER_H
+
+#include <stdint.h>
+#include "config.h"
+
+#if HAVE_INLINE_ASM && defined(__ARM_ARCH_7A__)
+
+#define AV_READ_TIME read_time
+
+static inline uint64_t read_time(void)
+{
+    unsigned cc;
+    __asm__ volatile ("mrc p15, 0, %0, c9, c13, 0" : "=r"(cc));
+    return cc;
+}
+
+#endif /* HAVE_INLINE_ASM && __ARM_ARCH_7A__ */
+
+#endif /* AVUTIL_ARM_TIMER_H */
diff --git a/media/ffvpx/libavutil/attributes.h b/media/ffvpx/libavutil/attributes.h
new file mode 100644
index 0000000000..ced108aa2c
--- /dev/null
+++ b/media/ffvpx/libavutil/attributes.h
@@ -0,0 +1,167 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Macro definitions for various function/variable attributes
+ */
+
+#ifndef AVUTIL_ATTRIBUTES_H
+#define AVUTIL_ATTRIBUTES_H
+
+#ifdef __GNUC__
+#    define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > (x) || __GNUC__ == (x) && __GNUC_MINOR__ >= (y))
+#    define AV_GCC_VERSION_AT_MOST(x,y)  (__GNUC__ < (x) || __GNUC__ == (x) && __GNUC_MINOR__ <= (y))
+#else
+#    define AV_GCC_VERSION_AT_LEAST(x,y) 0
+#    define AV_GCC_VERSION_AT_MOST(x,y)  0
+#endif
+
+#ifndef av_always_inline
+#if AV_GCC_VERSION_AT_LEAST(3,1)
+#    define av_always_inline __attribute__((always_inline)) inline
+#elif defined(_MSC_VER)
+#    define av_always_inline __forceinline
+#else
+#    define av_always_inline inline
+#endif
+#endif
+
+#ifndef av_extern_inline
+#if defined(__ICL) && __ICL >= 1210 || defined(__GNUC_STDC_INLINE__)
+#    define av_extern_inline extern inline
+#else
+#    define av_extern_inline inline
+#endif
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(3,4)
+#    define av_warn_unused_result __attribute__((warn_unused_result))
+#else
+#    define av_warn_unused_result
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(3,1)
+#    define av_noinline __attribute__((noinline))
+#elif defined(_MSC_VER)
+#    define av_noinline __declspec(noinline)
+#else
+#    define av_noinline
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(3,1) || defined(__clang__)
+#    define av_pure __attribute__((pure))
+#else
+#    define av_pure
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(2,6) || defined(__clang__)
+#    define av_const __attribute__((const))
+#else
+#    define av_const
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(4,3) || defined(__clang__)
+#    define av_cold __attribute__((cold))
+#else
+#    define av_cold
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(4,1) && !defined(__llvm__)
+#    define av_flatten __attribute__((flatten))
+#else
+#    define av_flatten
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(3,1)
+#    define attribute_deprecated __attribute__((deprecated))
+#elif defined(_MSC_VER)
+#    define attribute_deprecated __declspec(deprecated)
+#else
+#    define attribute_deprecated
+#endif
+
+/**
+ * Disable warnings about deprecated features
+ * This is useful for sections of code kept for backward compatibility and
+ * scheduled for removal.
+ */
+#ifndef AV_NOWARN_DEPRECATED
+#if AV_GCC_VERSION_AT_LEAST(4,6)
+#    define AV_NOWARN_DEPRECATED(code) \
+        _Pragma("GCC diagnostic push") \
+        _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \
+        code \
+        _Pragma("GCC diagnostic pop")
+#elif defined(_MSC_VER)
+#    define AV_NOWARN_DEPRECATED(code) \
+        __pragma(warning(push)) \
+        __pragma(warning(disable : 4996)) \
+        code; \
+        __pragma(warning(pop))
+#else
+#    define AV_NOWARN_DEPRECATED(code) code
+#endif
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+#    define av_unused __attribute__((unused))
+#else
+#    define av_unused
+#endif
+
+/**
+ * Mark a variable as used and prevent the compiler from optimizing it
+ * away.  This is useful for variables accessed only from inline
+ * assembler without the compiler being aware.
+ */
+#if AV_GCC_VERSION_AT_LEAST(3,1) || defined(__clang__)
+#    define av_used __attribute__((used))
+#else
+#    define av_used
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(3,3) || defined(__clang__)
+#   define av_alias __attribute__((may_alias))
+#else
+#   define av_alias
+#endif
+
+#if (defined(__GNUC__) || defined(__clang__)) && !defined(__INTEL_COMPILER)
+#    define av_uninit(x) x=x
+#else
+#    define av_uninit(x) x
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+#    define av_builtin_constant_p __builtin_constant_p
+#    define av_printf_format(fmtpos, attrpos) __attribute__((__format__(__printf__, fmtpos, attrpos)))
+#else
+#    define av_builtin_constant_p(x) 0
+#    define av_printf_format(fmtpos, attrpos)
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(2,5) || defined(__clang__)
+#    define av_noreturn __attribute__((noreturn))
+#else
+#    define av_noreturn
+#endif
+
+#endif /* AVUTIL_ATTRIBUTES_H */
diff --git a/media/ffvpx/libavutil/avassert.h b/media/ffvpx/libavutil/avassert.h
new file mode 100644
index 0000000000..9abeadea4a
--- /dev/null
+++ b/media/ffvpx/libavutil/avassert.h
@@ -0,0 +1,75 @@
+/*
+ * copyright (c) 2010 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * simple assert() macros that are a bit more flexible than ISO C assert().
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#ifndef AVUTIL_AVASSERT_H
+#define AVUTIL_AVASSERT_H
+
+#include <stdlib.h>
+#include "avutil.h"
+#include "log.h"
+
+/**
+ * assert() equivalent, that is always enabled.
+ */
+#define av_assert0(cond) do {                                           \
+    if (!(cond)) {                                                      \
+        av_log(NULL, AV_LOG_PANIC, "Assertion %s failed at %s:%d\n",    \
+               AV_STRINGIFY(cond), __FILE__, __LINE__);                 \
+        abort();                                                        \
+    }                                                                   \
+} while (0)
+
+
+/**
+ * assert() equivalent, that does not lie in speed critical code.
+ * These asserts() thus can be enabled without fearing speed loss.
+ */
+#if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 0
+#define av_assert1(cond) av_assert0(cond)
+#else
+#define av_assert1(cond) ((void)0)
+#endif
+
+
+/**
+ * assert() equivalent, that does lie in speed critical code.
+ */
+#if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1
+#define av_assert2(cond) av_assert0(cond)
+#define av_assert2_fpu() av_assert0_fpu()
+#else
+#define av_assert2(cond) ((void)0)
+#define av_assert2_fpu() ((void)0)
+#endif
+
+/**
+ * Assert that floating point operations can be executed.
+ *
+ * This will av_assert0() that the cpu is not in MMX state on X86
+ */
+void av_assert0_fpu(void);
+
+#endif /* AVUTIL_AVASSERT_H */
diff --git a/media/ffvpx/libavutil/avconfig.h b/media/ffvpx/libavutil/avconfig.h
new file mode 100644
index 0000000000..f10aa6186b
--- /dev/null
+++ b/media/ffvpx/libavutil/avconfig.h
@@ -0,0 +1,6 @@
+/* Generated by ffconf */
+#ifndef AVUTIL_AVCONFIG_H
+#define AVUTIL_AVCONFIG_H
+#define AV_HAVE_BIGENDIAN 0
+#define AV_HAVE_FAST_UNALIGNED 1
+#endif /* AVUTIL_AVCONFIG_H */
diff --git a/media/ffvpx/libavutil/avstring.c b/media/ffvpx/libavutil/avstring.c
new file mode 100644
index 0000000000..4c068f5bc5
--- /dev/null
+++ b/media/ffvpx/libavutil/avstring.c
@@ -0,0 +1,461 @@
+/*
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2007 Mans Rullgard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "config.h"
+#include "common.h"
+#include "mem.h"
+#include "avassert.h"
+#include "avstring.h"
+#include "bprint.h"
+
+int av_strstart(const char *str, const char *pfx, const char **ptr)
+{
+    while (*pfx && *pfx == *str) {
+        pfx++;
+        str++;
+    }
+    if (!*pfx && ptr)
+        *ptr = str;
+    return !*pfx;
+}
+
+int av_stristart(const char *str, const char *pfx, const char **ptr)
+{
+    while (*pfx && av_toupper((unsigned)*pfx) == av_toupper((unsigned)*str)) {
+        pfx++;
+        str++;
+    }
+    if (!*pfx && ptr)
+        *ptr = str;
+    return !*pfx;
+}
+
+char *av_stristr(const char *s1, const char *s2)
+{
+    if (!*s2)
+        return (char*)(intptr_t)s1;
+
+    do
+        if (av_stristart(s1, s2, NULL))
+            return (char*)(intptr_t)s1;
+    while (*s1++);
+
+    return NULL;
+}
+
+char *av_strnstr(const char *haystack, const char *needle, size_t hay_length)
+{
+    size_t needle_len = strlen(needle);
+    if (!needle_len)
+        return (char*)haystack;
+    while (hay_length >= needle_len) {
+        hay_length--;
+        if (!memcmp(haystack, needle, needle_len))
+            return (char*)haystack;
+        haystack++;
+    }
+    return NULL;
+}
+
+size_t av_strlcpy(char *dst, const char *src, size_t size)
+{
+    size_t len = 0;
+    while (++len < size && *src)
+        *dst++ = *src++;
+    if (len <= size)
+        *dst = 0;
+    return len + strlen(src) - 1;
+}
+
+size_t av_strlcat(char *dst, const char *src, size_t size)
+{
+    size_t len = strlen(dst);
+    if (size <= len + 1)
+        return len + strlen(src);
+    return len + av_strlcpy(dst + len, src, size - len);
+}
+
+size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
+{
+    size_t len = strlen(dst);
+    va_list vl;
+
+    va_start(vl, fmt);
+    len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
+    va_end(vl);
+
+    return len;
+}
+
+char *av_asprintf(const char *fmt, ...)
+{
+    char *p = NULL;
+    va_list va;
+    int len;
+
+    va_start(va, fmt);
+    len = vsnprintf(NULL, 0, fmt, va);
+    va_end(va);
+    if (len < 0)
+        goto end;
+
+    p = av_malloc(len + 1);
+    if (!p)
+        goto end;
+
+    va_start(va, fmt);
+    len = vsnprintf(p, len + 1, fmt, va);
+    va_end(va);
+    if (len < 0)
+        av_freep(&p);
+
+end:
+    return p;
+}
+
+char *av_d2str(double d)
+{
+    char *str = av_malloc(16);
+    if (str)
+        snprintf(str, 16, "%f", d);
+    return str;
+}
+
+#define WHITESPACES " \n\t\r"
+
+char *av_get_token(const char **buf, const char *term)
+{
+    char *out     = av_malloc(strlen(*buf) + 1);
+    char *ret     = out, *end = out;
+    const char *p = *buf;
+    if (!out)
+        return NULL;
+    p += strspn(p, WHITESPACES);
+
+    while (*p && !strspn(p, term)) {
+        char c = *p++;
+        if (c == '\\' && *p) {
+            *out++ = *p++;
+            end    = out;
+        } else if (c == '\'') {
+            while (*p && *p != '\'')
+                *out++ = *p++;
+            if (*p) {
+                p++;
+                end = out;
+            }
+        } else {
+            *out++ = c;
+        }
+    }
+
+    do
+        *out-- = 0;
+    while (out >= end && strspn(out, WHITESPACES));
+
+    *buf = p;
+
+    return ret;
+}
+
+char *av_strtok(char *s, const char *delim, char **saveptr)
+{
+    char *tok;
+
+    if (!s && !(s = *saveptr))
+        return NULL;
+
+    /* skip leading delimiters */
+    s += strspn(s, delim);
+
+    /* s now points to the first non delimiter char, or to the end of the string */
+    if (!*s) {
+        *saveptr = NULL;
+        return NULL;
+    }
+    tok = s++;
+
+    /* skip non delimiters */
+    s += strcspn(s, delim);
+    if (*s) {
+        *s = 0;
+        *saveptr = s+1;
+    } else {
+        *saveptr = NULL;
+    }
+
+    return tok;
+}
+
+int av_strcasecmp(const char *a, const char *b)
+{
+    uint8_t c1, c2;
+    do {
+        c1 = av_tolower(*a++);
+        c2 = av_tolower(*b++);
+    } while (c1 && c1 == c2);
+    return c1 - c2;
+}
+
+int av_strncasecmp(const char *a, const char *b, size_t n)
+{
+    uint8_t c1, c2;
+    if (n <= 0)
+        return 0;
+    do {
+        c1 = av_tolower(*a++);
+        c2 = av_tolower(*b++);
+    } while (--n && c1 && c1 == c2);
+    return c1 - c2;
+}
+
+char *av_strireplace(const char *str, const char *from, const char *to)
+{
+    char *ret = NULL;
+    const char *pstr2, *pstr = str;
+    size_t tolen = strlen(to), fromlen = strlen(from);
+    AVBPrint pbuf;
+
+    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
+    while ((pstr2 = av_stristr(pstr, from))) {
+        av_bprint_append_data(&pbuf, pstr, pstr2 - pstr);
+        pstr = pstr2 + fromlen;
+        av_bprint_append_data(&pbuf, to, tolen);
+    }
+    av_bprint_append_data(&pbuf, pstr, strlen(pstr));
+    if (!av_bprint_is_complete(&pbuf)) {
+        av_bprint_finalize(&pbuf, NULL);
+    } else {
+        av_bprint_finalize(&pbuf, &ret);
+    }
+
+    return ret;
+}
+
+const char *av_basename(const char *path)
+{
+    char *p = strrchr(path, '/');
+
+#if HAVE_DOS_PATHS
+    char *q = strrchr(path, '\\');
+    char *d = strchr(path, ':');
+
+    p = FFMAX3(p, q, d);
+#endif
+
+    if (!p)
+        return path;
+
+    return p + 1;
+}
+
+const char *av_dirname(char *path)
+{
+    char *p = strrchr(path, '/');
+
+#if HAVE_DOS_PATHS
+    char *q = strrchr(path, '\\');
+    char *d = strchr(path, ':');
+
+    d = d ? d + 1 : d;
+
+    p = FFMAX3(p, q, d);
+#endif
+
+    if (!p)
+        return ".";
+
+    *p = '\0';
+
+    return path;
+}
+
+char *av_append_path_component(const char *path, const char *component)
+{
+    size_t p_len, c_len;
+    char *fullpath;
+
+    if (!path)
+        return av_strdup(component);
+    if (!component)
+        return av_strdup(path);
+
+    p_len = strlen(path);
+    c_len = strlen(component);
+    if (p_len > SIZE_MAX - c_len || p_len + c_len > SIZE_MAX - 2)
+        return NULL;
+    fullpath = av_malloc(p_len + c_len + 2);
+    if (fullpath) {
+        if (p_len) {
+            av_strlcpy(fullpath, path, p_len + 1);
+            if (c_len) {
+                if (fullpath[p_len - 1] != '/' && component[0] != '/')
+                    fullpath[p_len++] = '/';
+                else if (fullpath[p_len - 1] == '/' && component[0] == '/')
+                    p_len--;
+            }
+        }
+        av_strlcpy(&fullpath[p_len], component, c_len + 1);
+        fullpath[p_len + c_len] = 0;
+    }
+    return fullpath;
+}
+
+int av_escape(char **dst, const char *src, const char *special_chars,
+              enum AVEscapeMode mode, int flags)
+{
+    AVBPrint dstbuf;
+
+    av_bprint_init(&dstbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
+    av_bprint_escape(&dstbuf, src, special_chars, mode, flags);
+
+    if (!av_bprint_is_complete(&dstbuf)) {
+        av_bprint_finalize(&dstbuf, NULL);
+        return AVERROR(ENOMEM);
+    } else {
+        av_bprint_finalize(&dstbuf, dst);
+        return dstbuf.len;
+    }
+}
+
+int av_match_name(const char *name, const char *names)
+{
+    const char *p;
+    int len, namelen;
+
+    if (!name || !names)
+        return 0;
+
+    namelen = strlen(name);
+    while (*names) {
+        int negate = '-' == *names;
+        p = strchr(names, ',');
+        if (!p)
+            p = names + strlen(names);
+        names += negate;
+        len = FFMAX(p - names, namelen);
+        if (!av_strncasecmp(name, names, len) || !strncmp("ALL", names, FFMAX(3, p - names)))
+            return !negate;
+        names = p + (*p == ',');
+    }
+    return 0;
+}
+
+int av_utf8_decode(int32_t *codep, const uint8_t **bufp, const uint8_t *buf_end,
+                   unsigned int flags)
+{
+    const uint8_t *p = *bufp;
+    uint32_t top;
+    uint64_t code;
+    int ret = 0, tail_len;
+    uint32_t overlong_encoding_mins[6] = {
+        0x00000000, 0x00000080, 0x00000800, 0x00010000, 0x00200000, 0x04000000,
+    };
+
+    if (p >= buf_end)
+        return 0;
+
+    code = *p++;
+
+    /* first sequence byte starts with 10, or is 1111-1110 or 1111-1111,
+       which is not admitted */
+    if ((code & 0xc0) == 0x80 || code >= 0xFE) {
+        ret = AVERROR(EILSEQ);
+        goto end;
+    }
+    top = (code & 128) >> 1;
+
+    tail_len = 0;
+    while (code & top) {
+        int tmp;
+        tail_len++;
+        if (p >= buf_end) {
+            (*bufp) ++;
+            return AVERROR(EILSEQ); /* incomplete sequence */
+        }
+
+        /* we assume the byte to be in the form 10xx-xxxx */
+        tmp = *p++ - 128;   /* strip leading 1 */
+        if (tmp>>6) {
+            (*bufp) ++;
+            return AVERROR(EILSEQ);
+        }
+        code = (code<<6) + tmp;
+        top <<= 5;
+    }
+    code &= (top << 1) - 1;
+
+    /* check for overlong encodings */
+    av_assert0(tail_len <= 5);
+    if (code < overlong_encoding_mins[tail_len]) {
+        ret = AVERROR(EILSEQ);
+        goto end;
+    }
+
+    if (code >= 1U<<31) {
+        ret = AVERROR(EILSEQ);  /* out-of-range value */
+        goto end;
+    }
+
+    *codep = code;
+
+    if (code > 0x10FFFF &&
+        !(flags & AV_UTF8_FLAG_ACCEPT_INVALID_BIG_CODES))
+        ret = AVERROR(EILSEQ);
+    if (code < 0x20 && code != 0x9 && code != 0xA && code != 0xD &&
+        flags & AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES)
+        ret = AVERROR(EILSEQ);
+    if (code >= 0xD800 && code <= 0xDFFF &&
+        !(flags & AV_UTF8_FLAG_ACCEPT_SURROGATES))
+        ret = AVERROR(EILSEQ);
+    if ((code == 0xFFFE || code == 0xFFFF) &&
+        !(flags & AV_UTF8_FLAG_ACCEPT_NON_CHARACTERS))
+        ret = AVERROR(EILSEQ);
+
+end:
+    *bufp = p;
+    return ret;
+}
+
+int av_match_list(const char *name, const char *list, char separator)
+{
+    const char *p, *q;
+
+    for (p = name; p && *p; ) {
+        for (q = list; q && *q; ) {
+            int k;
+            for (k = 0; p[k] == q[k] || (p[k]*q[k] == 0 && p[k]+q[k] == separator); k++)
+                if (k && (!p[k] || p[k] == separator))
+                    return 1;
+            q = strchr(q, separator);
+            q += !!q;
+        }
+        p = strchr(p, separator);
+        p += !!p;
+    }
+
+    return 0;
+}
diff --git a/media/ffvpx/libavutil/avstring.h b/media/ffvpx/libavutil/avstring.h
new file mode 100644
index 0000000000..37dd4e2da0
--- /dev/null
+++ b/media/ffvpx/libavutil/avstring.h
@@ -0,0 +1,413 @@
+/*
+ * Copyright (c) 2007 Mans Rullgard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_AVSTRING_H
+#define AVUTIL_AVSTRING_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include "attributes.h"
+
+/**
+ * @addtogroup lavu_string
+ * @{
+ */
+
+/**
+ * Return non-zero if pfx is a prefix of str. If it is, *ptr is set to
+ * the address of the first character in str after the prefix.
+ *
+ * @param str input string
+ * @param pfx prefix to test
+ * @param ptr updated if the prefix is matched inside str
+ * @return non-zero if the prefix matches, zero otherwise
+ */
+int av_strstart(const char *str, const char *pfx, const char **ptr);
+
+/**
+ * Return non-zero if pfx is a prefix of str independent of case. If
+ * it is, *ptr is set to the address of the first character in str
+ * after the prefix.
+ *
+ * @param str input string
+ * @param pfx prefix to test
+ * @param ptr updated if the prefix is matched inside str
+ * @return non-zero if the prefix matches, zero otherwise
+ */
+int av_stristart(const char *str, const char *pfx, const char **ptr);
+
+/**
+ * Locate the first case-independent occurrence in the string haystack
+ * of the string needle.  A zero-length string needle is considered to
+ * match at the start of haystack.
+ *
+ * This function is a case-insensitive version of the standard strstr().
+ *
+ * @param haystack string to search in
+ * @param needle   string to search for
+ * @return         pointer to the located match within haystack
+ *                 or a null pointer if no match
+ */
+char *av_stristr(const char *haystack, const char *needle);
+
+/**
+ * Locate the first occurrence of the string needle in the string haystack
+ * where not more than hay_length characters are searched. A zero-length
+ * string needle is considered to match at the start of haystack.
+ *
+ * This function is a length-limited version of the standard strstr().
+ *
+ * @param haystack   string to search in
+ * @param needle     string to search for
+ * @param hay_length length of string to search in
+ * @return           pointer to the located match within haystack
+ *                   or a null pointer if no match
+ */
+char *av_strnstr(const char *haystack, const char *needle, size_t hay_length);
+
+/**
+ * Copy the string src to dst, but no more than size - 1 bytes, and
+ * null-terminate dst.
+ *
+ * This function is the same as BSD strlcpy().
+ *
+ * @param dst destination buffer
+ * @param src source string
+ * @param size size of destination buffer
+ * @return the length of src
+ *
+ * @warning since the return value is the length of src, src absolutely
+ * _must_ be a properly 0-terminated string, otherwise this will read beyond
+ * the end of the buffer and possibly crash.
+ */
+size_t av_strlcpy(char *dst, const char *src, size_t size);
+
+/**
+ * Append the string src to the string dst, but to a total length of
+ * no more than size - 1 bytes, and null-terminate dst.
+ *
+ * This function is similar to BSD strlcat(), but differs when
+ * size <= strlen(dst).
+ *
+ * @param dst destination buffer
+ * @param src source string
+ * @param size size of destination buffer
+ * @return the total length of src and dst
+ *
+ * @warning since the return value use the length of src and dst, these
+ * absolutely _must_ be a properly 0-terminated strings, otherwise this
+ * will read beyond the end of the buffer and possibly crash.
+ */
+size_t av_strlcat(char *dst, const char *src, size_t size);
+
+/**
+ * Append output to a string, according to a format. Never write out of
+ * the destination buffer, and always put a terminating 0 within
+ * the buffer.
+ * @param dst destination buffer (string to which the output is
+ *  appended)
+ * @param size total size of the destination buffer
+ * @param fmt printf-compatible format string, specifying how the
+ *  following parameters are used
+ * @return the length of the string that would have been generated
+ *  if enough space had been available
+ */
+size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...) av_printf_format(3, 4);
+
+/**
+ * Get the count of continuous non zero chars starting from the beginning.
+ *
+ * @param len maximum number of characters to check in the string, that
+ *            is the maximum value which is returned by the function
+ */
+static inline size_t av_strnlen(const char *s, size_t len)
+{
+    size_t i;
+    for (i = 0; i < len && s[i]; i++)
+        ;
+    return i;
+}
+
+/**
+ * Print arguments following specified format into a large enough auto
+ * allocated buffer. It is similar to GNU asprintf().
+ * @param fmt printf-compatible format string, specifying how the
+ *            following parameters are used.
+ * @return the allocated string
+ * @note You have to free the string yourself with av_free().
+ */
+char *av_asprintf(const char *fmt, ...) av_printf_format(1, 2);
+
+/**
+ * Convert a number to an av_malloced string.
+ */
+char *av_d2str(double d);
+
+/**
+ * Unescape the given string until a non escaped terminating char,
+ * and return the token corresponding to the unescaped string.
+ *
+ * The normal \ and ' escaping is supported. Leading and trailing
+ * whitespaces are removed, unless they are escaped with '\' or are
+ * enclosed between ''.
+ *
+ * @param buf the buffer to parse, buf will be updated to point to the
+ * terminating char
+ * @param term a 0-terminated list of terminating chars
+ * @return the malloced unescaped string, which must be av_freed by
+ * the user, NULL in case of allocation failure
+ */
+char *av_get_token(const char **buf, const char *term);
+
+/**
+ * Split the string into several tokens which can be accessed by
+ * successive calls to av_strtok().
+ *
+ * A token is defined as a sequence of characters not belonging to the
+ * set specified in delim.
+ *
+ * On the first call to av_strtok(), s should point to the string to
+ * parse, and the value of saveptr is ignored. In subsequent calls, s
+ * should be NULL, and saveptr should be unchanged since the previous
+ * call.
+ *
+ * This function is similar to strtok_r() defined in POSIX.1.
+ *
+ * @param s the string to parse, may be NULL
+ * @param delim 0-terminated list of token delimiters, must be non-NULL
+ * @param saveptr user-provided pointer which points to stored
+ * information necessary for av_strtok() to continue scanning the same
+ * string. saveptr is updated to point to the next character after the
+ * first delimiter found, or to NULL if the string was terminated
+ * @return the found token, or NULL when no token is found
+ */
+char *av_strtok(char *s, const char *delim, char **saveptr);
+
+/**
+ * Locale-independent conversion of ASCII isdigit.
+ */
+static inline av_const int av_isdigit(int c)
+{
+    return c >= '0' && c <= '9';
+}
+
+/**
+ * Locale-independent conversion of ASCII isgraph.
+ */
+static inline av_const int av_isgraph(int c)
+{
+    return c > 32 && c < 127;
+}
+
+/**
+ * Locale-independent conversion of ASCII isspace.
+ */
+static inline av_const int av_isspace(int c)
+{
+    return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' ||
+           c == '\v';
+}
+
+/**
+ * Locale-independent conversion of ASCII characters to uppercase.
+ */
+static inline av_const int av_toupper(int c)
+{
+    if (c >= 'a' && c <= 'z')
+        c ^= 0x20;
+    return c;
+}
+
+/**
+ * Locale-independent conversion of ASCII characters to lowercase.
+ */
+static inline av_const int av_tolower(int c)
+{
+    if (c >= 'A' && c <= 'Z')
+        c ^= 0x20;
+    return c;
+}
+
+/**
+ * Locale-independent conversion of ASCII isxdigit.
+ */
+static inline av_const int av_isxdigit(int c)
+{
+    c = av_tolower(c);
+    return av_isdigit(c) || (c >= 'a' && c <= 'f');
+}
+
+/**
+ * Locale-independent case-insensitive compare.
+ * @note This means only ASCII-range characters are case-insensitive
+ */
+int av_strcasecmp(const char *a, const char *b);
+
+/**
+ * Locale-independent case-insensitive compare.
+ * @note This means only ASCII-range characters are case-insensitive
+ */
+int av_strncasecmp(const char *a, const char *b, size_t n);
+
+/**
+ * Locale-independent strings replace.
+ * @note This means only ASCII-range characters are replace
+ */
+char *av_strireplace(const char *str, const char *from, const char *to);
+
+/**
+ * Thread safe basename.
+ * @param path the path, on DOS both \ and / are considered separators.
+ * @return pointer to the basename substring.
+ */
+const char *av_basename(const char *path);
+
+/**
+ * Thread safe dirname.
+ * @param path the path, on DOS both \ and / are considered separators.
+ * @return the path with the separator replaced by the string terminator or ".".
+ * @note the function may change the input string.
+ */
+const char *av_dirname(char *path);
+
+/**
+ * Match instances of a name in a comma-separated list of names.
+ * List entries are checked from the start to the end of the names list,
+ * the first match ends further processing. If an entry prefixed with '-'
+ * matches, then 0 is returned. The "ALL" list entry is considered to
+ * match all names.
+ *
+ * @param name  Name to look for.
+ * @param names List of names.
+ * @return 1 on match, 0 otherwise.
+ */
+int av_match_name(const char *name, const char *names);
+
+/**
+ * Append path component to the existing path.
+ * Path separator '/' is placed between when needed.
+ * Resulting string have to be freed with av_free().
+ * @param path      base path
+ * @param component component to be appended
+ * @return new path or NULL on error.
+ */
+char *av_append_path_component(const char *path, const char *component);
+
+enum AVEscapeMode {
+    AV_ESCAPE_MODE_AUTO,      ///< Use auto-selected escaping mode.
+    AV_ESCAPE_MODE_BACKSLASH, ///< Use backslash escaping.
+    AV_ESCAPE_MODE_QUOTE,     ///< Use single-quote escaping.
+};
+
+/**
+ * Consider spaces special and escape them even in the middle of the
+ * string.
+ *
+ * This is equivalent to adding the whitespace characters to the special
+ * characters lists, except it is guaranteed to use the exact same list
+ * of whitespace characters as the rest of libavutil.
+ */
+#define AV_ESCAPE_FLAG_WHITESPACE (1 << 0)
+
+/**
+ * Escape only specified special characters.
+ * Without this flag, escape also any characters that may be considered
+ * special by av_get_token(), such as the single quote.
+ */
+#define AV_ESCAPE_FLAG_STRICT (1 << 1)
+
+/**
+ * Escape string in src, and put the escaped string in an allocated
+ * string in *dst, which must be freed with av_free().
+ *
+ * @param dst           pointer where an allocated string is put
+ * @param src           string to escape, must be non-NULL
+ * @param special_chars string containing the special characters which
+ *                      need to be escaped, can be NULL
+ * @param mode          escape mode to employ, see AV_ESCAPE_MODE_* macros.
+ *                      Any unknown value for mode will be considered equivalent to
+ *                      AV_ESCAPE_MODE_BACKSLASH, but this behaviour can change without
+ *                      notice.
+ * @param flags         flags which control how to escape, see AV_ESCAPE_FLAG_ macros
+ * @return the length of the allocated string, or a negative error code in case of error
+ * @see av_bprint_escape()
+ */
+av_warn_unused_result
+int av_escape(char **dst, const char *src, const char *special_chars,
+              enum AVEscapeMode mode, int flags);
+
+#define AV_UTF8_FLAG_ACCEPT_INVALID_BIG_CODES          1 ///< accept codepoints over 0x10FFFF
+#define AV_UTF8_FLAG_ACCEPT_NON_CHARACTERS             2 ///< accept non-characters - 0xFFFE and 0xFFFF
+#define AV_UTF8_FLAG_ACCEPT_SURROGATES                 4 ///< accept UTF-16 surrogates codes
+#define AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES 8 ///< exclude control codes not accepted by XML
+
+#define AV_UTF8_FLAG_ACCEPT_ALL \
+    AV_UTF8_FLAG_ACCEPT_INVALID_BIG_CODES|AV_UTF8_FLAG_ACCEPT_NON_CHARACTERS|AV_UTF8_FLAG_ACCEPT_SURROGATES
+
+/**
+ * Read and decode a single UTF-8 code point (character) from the
+ * buffer in *buf, and update *buf to point to the next byte to
+ * decode.
+ *
+ * In case of an invalid byte sequence, the pointer will be updated to
+ * the next byte after the invalid sequence and the function will
+ * return an error code.
+ *
+ * Depending on the specified flags, the function will also fail in
+ * case the decoded code point does not belong to a valid range.
+ *
+ * @note For speed-relevant code a carefully implemented use of
+ * GET_UTF8() may be preferred.
+ *
+ * @param codep   pointer used to return the parsed code in case of success.
+ *                The value in *codep is set even in case the range check fails.
+ * @param bufp    pointer to the address the first byte of the sequence
+ *                to decode, updated by the function to point to the
+ *                byte next after the decoded sequence
+ * @param buf_end pointer to the end of the buffer, points to the next
+ *                byte past the last in the buffer. This is used to
+ *                avoid buffer overreads (in case of an unfinished
+ *                UTF-8 sequence towards the end of the buffer).
+ * @param flags   a collection of AV_UTF8_FLAG_* flags
+ * @return >= 0 in case a sequence was successfully read, a negative
+ * value in case of invalid sequence
+ */
+av_warn_unused_result
+int av_utf8_decode(int32_t *codep, const uint8_t **bufp, const uint8_t *buf_end,
+                   unsigned int flags);
+
+/**
+ * Check if a name is in a list.
+ * @returns 0 if not found, or the 1 based index where it has been found in the
+ *            list.
+ */
+int av_match_list(const char *name, const char *list, char separator);
+
+/**
+ * See libc sscanf manual for more information.
+ * Locale-independent sscanf implementation.
+ */
+int av_sscanf(const char *string, const char *format, ...);
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_AVSTRING_H */
diff --git a/media/ffvpx/libavutil/avutil.h b/media/ffvpx/libavutil/avutil.h
new file mode 100644
index 0000000000..4d633156d1
--- /dev/null
+++ b/media/ffvpx/libavutil/avutil.h
@@ -0,0 +1,365 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_AVUTIL_H
+#define AVUTIL_AVUTIL_H
+
+/**
+ * @file
+ * @ingroup lavu
+ * Convenience header that includes @ref lavu "libavutil"'s core.
+ */
+
+/**
+ * @mainpage
+ *
+ * @section ffmpeg_intro Introduction
+ *
+ * This document describes the usage of the different libraries
+ * provided by FFmpeg.
+ *
+ * @li @ref libavc "libavcodec" encoding/decoding library
+ * @li @ref lavfi "libavfilter" graph-based frame editing library
+ * @li @ref libavf "libavformat" I/O and muxing/demuxing library
+ * @li @ref lavd "libavdevice" special devices muxing/demuxing library
+ * @li @ref lavu "libavutil" common utility library
+ * @li @ref lswr "libswresample" audio resampling, format conversion and mixing
+ * @li @ref lpp  "libpostproc" post processing library
+ * @li @ref libsws "libswscale" color conversion and scaling library
+ *
+ * @section ffmpeg_versioning Versioning and compatibility
+ *
+ * Each of the FFmpeg libraries contains a version.h header, which defines a
+ * major, minor and micro version number with the
+ * <em>LIBRARYNAME_VERSION_{MAJOR,MINOR,MICRO}</em> macros. The major version
+ * number is incremented with backward incompatible changes - e.g. removing
+ * parts of the public API, reordering public struct members, etc. The minor
+ * version number is incremented for backward compatible API changes or major
+ * new features - e.g. adding a new public function or a new decoder. The micro
+ * version number is incremented for smaller changes that a calling program
+ * might still want to check for - e.g. changing behavior in a previously
+ * unspecified situation.
+ *
+ * FFmpeg guarantees backward API and ABI compatibility for each library as long
+ * as its major version number is unchanged. This means that no public symbols
+ * will be removed or renamed. Types and names of the public struct members and
+ * values of public macros and enums will remain the same (unless they were
+ * explicitly declared as not part of the public API). Documented behavior will
+ * not change.
+ *
+ * In other words, any correct program that works with a given FFmpeg snapshot
+ * should work just as well without any changes with any later snapshot with the
+ * same major versions. This applies to both rebuilding the program against new
+ * FFmpeg versions or to replacing the dynamic FFmpeg libraries that a program
+ * links against.
+ *
+ * However, new public symbols may be added and new members may be appended to
+ * public structs whose size is not part of public ABI (most public structs in
+ * FFmpeg). New macros and enum values may be added. Behavior in undocumented
+ * situations may change slightly (and be documented). All those are accompanied
+ * by an entry in doc/APIchanges and incrementing either the minor or micro
+ * version number.
+ */
+
+/**
+ * @defgroup lavu libavutil
+ * Common code shared across all FFmpeg libraries.
+ *
+ * @note
+ * libavutil is designed to be modular. In most cases, in order to use the
+ * functions provided by one component of libavutil you must explicitly include
+ * the specific header containing that feature. If you are only using
+ * media-related components, you could simply include libavutil/avutil.h, which
+ * brings in most of the "core" components.
+ *
+ * @{
+ *
+ * @defgroup lavu_crypto Crypto and Hashing
+ *
+ * @{
+ * @}
+ *
+ * @defgroup lavu_math Mathematics
+ * @{
+ *
+ * @}
+ *
+ * @defgroup lavu_string String Manipulation
+ *
+ * @{
+ *
+ * @}
+ *
+ * @defgroup lavu_mem Memory Management
+ *
+ * @{
+ *
+ * @}
+ *
+ * @defgroup lavu_data Data Structures
+ * @{
+ *
+ * @}
+ *
+ * @defgroup lavu_video Video related
+ *
+ * @{
+ *
+ * @}
+ *
+ * @defgroup lavu_audio Audio related
+ *
+ * @{
+ *
+ * @}
+ *
+ * @defgroup lavu_error Error Codes
+ *
+ * @{
+ *
+ * @}
+ *
+ * @defgroup lavu_log Logging Facility
+ *
+ * @{
+ *
+ * @}
+ *
+ * @defgroup lavu_misc Other
+ *
+ * @{
+ *
+ * @defgroup preproc_misc Preprocessor String Macros
+ *
+ * @{
+ *
+ * @}
+ *
+ * @defgroup version_utils Library Version Macros
+ *
+ * @{
+ *
+ * @}
+ */
+
+
+/**
+ * @addtogroup lavu_ver
+ * @{
+ */
+
+/**
+ * Return the LIBAVUTIL_VERSION_INT constant.
+ */
+unsigned avutil_version(void);
+
+/**
+ * Return an informative version string. This usually is the actual release
+ * version number or a git commit description. This string has no fixed format
+ * and can change any time. It should never be parsed by code.
+ */
+const char *av_version_info(void);
+
+/**
+ * Return the libavutil build-time configuration.
+ */
+const char *avutil_configuration(void);
+
+/**
+ * Return the libavutil license.
+ */
+const char *avutil_license(void);
+
+/**
+ * @}
+ */
+
+/**
+ * @addtogroup lavu_media Media Type
+ * @brief Media Type
+ */
+
+enum AVMediaType {
+    AVMEDIA_TYPE_UNKNOWN = -1,  ///< Usually treated as AVMEDIA_TYPE_DATA
+    AVMEDIA_TYPE_VIDEO,
+    AVMEDIA_TYPE_AUDIO,
+    AVMEDIA_TYPE_DATA,          ///< Opaque data information usually continuous
+    AVMEDIA_TYPE_SUBTITLE,
+    AVMEDIA_TYPE_ATTACHMENT,    ///< Opaque data information usually sparse
+    AVMEDIA_TYPE_NB
+};
+
+/**
+ * Return a string describing the media_type enum, NULL if media_type
+ * is unknown.
+ */
+const char *av_get_media_type_string(enum AVMediaType media_type);
+
+/**
+ * @defgroup lavu_const Constants
+ * @{
+ *
+ * @defgroup lavu_enc Encoding specific
+ *
+ * @note those definition should move to avcodec
+ * @{
+ */
+
+#define FF_LAMBDA_SHIFT 7
+#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
+#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
+#define FF_LAMBDA_MAX (256*128-1)
+
+#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
+
+/**
+ * @}
+ * @defgroup lavu_time Timestamp specific
+ *
+ * FFmpeg internal timebase and timestamp definitions
+ *
+ * @{
+ */
+
+/**
+ * @brief Undefined timestamp value
+ *
+ * Usually reported by demuxer that work on containers that do not provide
+ * either pts or dts.
+ */
+
+#define AV_NOPTS_VALUE          ((int64_t)UINT64_C(0x8000000000000000))
+
+/**
+ * Internal time base represented as integer
+ */
+
+#define AV_TIME_BASE            1000000
+
+/**
+ * Internal time base represented as fractional value
+ */
+
+#define AV_TIME_BASE_Q          (AVRational){1, AV_TIME_BASE}
+
+/**
+ * @}
+ * @}
+ * @defgroup lavu_picture Image related
+ *
+ * AVPicture types, pixel formats and basic image planes manipulation.
+ *
+ * @{
+ */
+
+enum AVPictureType {
+    AV_PICTURE_TYPE_NONE = 0, ///< Undefined
+    AV_PICTURE_TYPE_I,     ///< Intra
+    AV_PICTURE_TYPE_P,     ///< Predicted
+    AV_PICTURE_TYPE_B,     ///< Bi-dir predicted
+    AV_PICTURE_TYPE_S,     ///< S(GMC)-VOP MPEG-4
+    AV_PICTURE_TYPE_SI,    ///< Switching Intra
+    AV_PICTURE_TYPE_SP,    ///< Switching Predicted
+    AV_PICTURE_TYPE_BI,    ///< BI type
+};
+
+/**
+ * Return a single letter to describe the given picture type
+ * pict_type.
+ *
+ * @param[in] pict_type the picture type @return a single character
+ * representing the picture type, '?' if pict_type is unknown
+ */
+char av_get_picture_type_char(enum AVPictureType pict_type);
+
+/**
+ * @}
+ */
+
+#include "common.h"
+#include "error.h"
+#include "rational.h"
+#include "version.h"
+#include "macros.h"
+#include "mathematics.h"
+#include "log.h"
+#include "pixfmt.h"
+
+/**
+ * Return x default pointer in case p is NULL.
+ */
+static inline void *av_x_if_null(const void *p, const void *x)
+{
+    return (void *)(intptr_t)(p ? p : x);
+}
+
+/**
+ * Compute the length of an integer list.
+ *
+ * @param elsize  size in bytes of each list element (only 1, 2, 4 or 8)
+ * @param term    list terminator (usually 0 or -1)
+ * @param list    pointer to the list
+ * @return  length of the list, in elements, not counting the terminator
+ */
+unsigned av_int_list_length_for_size(unsigned elsize,
+                                     const void *list, uint64_t term) av_pure;
+
+/**
+ * Compute the length of an integer list.
+ *
+ * @param term  list terminator (usually 0 or -1)
+ * @param list  pointer to the list
+ * @return  length of the list, in elements, not counting the terminator
+ */
+#define av_int_list_length(list, term) \
+    av_int_list_length_for_size(sizeof(*(list)), list, term)
+
+/**
+ * Open a file using a UTF-8 filename.
+ * The API of this function matches POSIX fopen(), errors are returned through
+ * errno.
+ */
+FILE *av_fopen_utf8(const char *path, const char *mode);
+
+/**
+ * Return the fractional representation of the internal time base.
+ */
+AVRational av_get_time_base_q(void);
+
+#define AV_FOURCC_MAX_STRING_SIZE 32
+
+#define av_fourcc2str(fourcc) av_fourcc_make_string((char[AV_FOURCC_MAX_STRING_SIZE]){0}, fourcc)
+
+/**
+ * Fill the provided buffer with a string containing a FourCC (four-character
+ * code) representation.
+ *
+ * @param buf    a buffer with size in bytes of at least AV_FOURCC_MAX_STRING_SIZE
+ * @param fourcc the fourcc to represent
+ * @return the buffer in input
+ */
+char *av_fourcc_make_string(char *buf, uint32_t fourcc);
+
+/**
+ * @}
+ * @}
+ */
+
+#endif /* AVUTIL_AVUTIL_H */
diff --git a/media/ffvpx/libavutil/avutil.symbols b/media/ffvpx/libavutil/avutil.symbols
new file mode 100644
index 0000000000..eac5abe286
--- /dev/null
+++ b/media/ffvpx/libavutil/avutil.symbols
@@ -0,0 +1,331 @@
+av_add_q
+av_add_stable
+av_append_path_component
+av_asprintf
+av_basename
+av_bprint_append_data
+av_bprint_channel_layout
+av_bprint_chars
+av_bprint_clear
+av_bprint_escape
+av_bprint_finalize
+av_bprint_get_buffer
+av_bprint_init
+av_bprint_init_for_buffer
+av_bprint_strftime
+av_bprintf
+av_buffer_alloc
+av_buffer_allocz
+av_buffer_create
+av_buffer_default_free
+av_buffer_get_opaque
+av_buffer_get_ref_count
+av_buffer_is_writable
+av_buffer_make_writable
+av_buffer_pool_get
+av_buffer_pool_init
+av_buffer_pool_uninit
+av_buffer_realloc
+av_buffer_ref
+av_buffer_unref
+av_calloc
+av_channel_layout_extract_channel
+av_chroma_location_name
+av_color_primaries_name
+av_color_range_name
+av_color_space_name
+av_color_transfer_name
+av_compare_mod
+av_compare_ts
+av_cpu_count
+av_crc
+av_crc_get_table
+av_crc_init
+av_d2q
+av_d2str
+av_default_get_category
+av_default_item_name
+av_dict_copy
+av_dict_count
+av_dict_free
+av_dict_get
+av_dict_get_string
+av_dict_parse_string
+av_dict_set
+av_dict_set_int
+av_dirname
+av_div_q
+av_dynarray2_add
+av_dynarray_add
+av_dynarray_add_nofree
+av_escape
+av_expr_eval
+av_expr_free
+av_expr_parse
+av_expr_parse_and_eval
+av_fast_malloc
+av_fast_realloc
+av_fifo_alloc
+av_fifo_alloc_array
+av_fifo_drain
+av_fifo_free
+av_fifo_freep
+av_fifo_generic_peek
+av_fifo_generic_read
+av_fifo_generic_write
+av_fifo_grow
+av_fifo_realloc2
+av_fifo_reset
+av_fifo_size
+av_fifo_space
+av_find_best_pix_fmt_of_2
+av_find_info_tag
+av_find_nearest_q_idx
+av_force_cpu_flags
+av_fourcc_make_string
+av_frame_alloc
+av_frame_apply_cropping
+av_frame_clone
+av_frame_copy
+av_frame_copy_props
+av_frame_free
+av_frame_get_best_effort_timestamp
+av_frame_get_buffer
+av_frame_get_channel_layout
+av_frame_get_channels
+av_frame_get_color_range
+av_frame_get_colorspace
+av_frame_get_decode_error_flags
+av_frame_get_metadata
+av_frame_get_pkt_duration
+av_frame_get_pkt_pos
+av_frame_get_pkt_size
+av_frame_get_plane_buffer
+av_frame_get_qp_table
+av_frame_get_sample_rate
+av_frame_get_side_data
+av_frame_is_writable
+av_frame_make_writable
+av_frame_move_ref
+av_frame_new_side_data
+av_frame_ref
+av_frame_remove_side_data
+av_frame_set_best_effort_timestamp
+av_frame_set_channel_layout
+av_frame_set_channels
+av_frame_set_color_range
+av_frame_set_colorspace
+av_frame_set_decode_error_flags
+av_frame_set_metadata
+av_frame_set_pkt_duration
+av_frame_set_pkt_pos
+av_frame_set_pkt_size
+av_frame_set_qp_table
+av_frame_set_sample_rate
+av_frame_side_data_name
+av_frame_unref
+av_free
+av_freep
+av_gcd
+av_get_alt_sample_fmt
+av_get_bits_per_pixel
+av_get_bytes_per_sample
+av_get_channel_description
+av_get_channel_layout
+av_get_channel_layout_channel_index
+av_get_channel_layout_nb_channels
+av_get_channel_layout_string
+av_get_channel_name
+av_get_colorspace_name
+av_get_cpu_flags
+av_get_default_channel_layout
+av_get_known_color_name
+av_get_media_type_string
+av_get_packed_sample_fmt
+av_get_padded_bits_per_pixel
+av_get_picture_type_char
+av_get_pix_fmt
+av_get_pix_fmt_loss
+av_get_pix_fmt_name
+av_get_pix_fmt_string
+av_get_planar_sample_fmt
+av_get_sample_fmt
+av_get_sample_fmt_name
+av_get_sample_fmt_string
+av_get_standard_channel_layout
+av_get_time_base_q
+av_get_token
+av_gettime
+av_gettime_relative
+av_gettime_relative_is_monotonic
+av_hwdevice_get_hwframe_constraints
+av_hwdevice_hwconfig_alloc
+av_hwframe_constraints_free
+av_hwframe_get_buffer
+av_image_alloc
+av_image_check_sar
+av_image_check_size
+av_image_check_size2
+av_image_copy
+av_image_copy_plane
+av_image_copy_to_buffer
+av_image_fill_arrays
+av_image_fill_linesizes
+av_image_fill_max_pixsteps
+av_image_fill_pointers
+av_image_get_buffer_size
+av_image_get_linesize
+av_int_list_length_for_size
+av_log
+#ifndef MOZ_FFVPX_AUDIOONLY
+av_log2
+av_log2_16bit
+#endif
+av_log_default_callback
+av_log_format_line
+av_log_get_flags
+av_log_get_level
+av_log_set_callback
+av_log_set_flags
+av_log_set_level
+av_malloc
+av_mallocz
+av_match_list
+av_match_name
+av_max_alloc
+av_memcpy_backptr
+av_memdup
+av_mul_q
+av_nearer_q
+av_opt_child_class_next
+av_opt_child_next
+av_opt_copy
+av_opt_eval_double
+av_opt_eval_flags
+av_opt_eval_float
+av_opt_eval_int
+av_opt_eval_int64
+av_opt_eval_q
+av_opt_find
+av_opt_find2
+av_opt_flag_is_set
+av_opt_free
+av_opt_freep_ranges
+av_opt_get
+av_opt_get_channel_layout
+av_opt_get_dict_val
+av_opt_get_double
+av_opt_get_image_size
+av_opt_get_int
+av_opt_get_key_value
+av_opt_get_pixel_fmt
+av_opt_get_q
+av_opt_get_sample_fmt
+av_opt_get_video_rate
+av_opt_is_set_to_default
+av_opt_is_set_to_default_by_name
+av_opt_next
+av_opt_ptr
+av_opt_query_ranges
+av_opt_query_ranges_default
+av_opt_serialize
+av_opt_set
+av_opt_set_bin
+av_opt_set_channel_layout
+av_opt_set_defaults
+av_opt_set_defaults2
+av_opt_set_dict
+av_opt_set_dict2
+av_opt_set_dict_val
+av_opt_set_double
+av_opt_set_from_string
+av_opt_set_image_size
+av_opt_set_int
+av_opt_set_pixel_fmt
+av_opt_set_q
+av_opt_set_sample_fmt
+av_opt_set_video_rate
+av_opt_show2
+av_parse_color
+av_parse_cpu_caps
+av_parse_cpu_flags
+av_parse_ratio
+av_parse_time
+av_parse_video_rate
+av_parse_video_size
+av_pix_fmt_count_planes
+av_pix_fmt_desc_get
+av_pix_fmt_desc_get_id
+av_pix_fmt_desc_next
+av_pix_fmt_get_chroma_sub_sample
+av_pix_fmt_swap_endianness
+av_q2intfloat
+av_read_image_line
+av_realloc
+av_realloc_array
+av_realloc_f
+av_reallocp
+av_reallocp_array
+av_reduce
+av_rescale
+av_rescale_delta
+av_rescale_q
+av_rescale_q_rnd
+av_rescale_rnd
+av_sample_fmt_is_planar
+av_samples_alloc
+av_samples_alloc_array_and_samples
+av_samples_copy
+av_samples_fill_arrays
+av_samples_get_buffer_size
+av_samples_set_silence
+av_set_cpu_flags_mask
+av_set_options_string
+av_small_strptime
+av_strcasecmp
+av_strdup
+av_strerror
+av_stristart
+av_stristr
+av_strlcat
+av_strlcatf
+av_strlcpy
+av_strncasecmp
+av_strndup
+av_strnstr
+av_strstart
+av_strtod
+av_strtok
+av_sub_q
+av_timegm
+av_usleep
+av_utf8_decode
+av_util_ffversion
+av_vbprintf
+av_version_info
+av_vlog
+av_write_image_line
+avpriv_alloc_fixed_dsp
+avpriv_float_dsp_alloc
+avpriv_report_missing_feature
+avpriv_request_sample
+avpriv_scalarproduct_float_c
+avpriv_set_systematic_pal2
+avutil_configuration
+avutil_license
+avutil_version
+#if defined(XP_WIN) && !defined(_ARM64_)
+avpriv_emms_asm
+#endif
+avpriv_slicethread_create
+avpriv_slicethread_execute
+avpriv_slicethread_free
+av_hwdevice_get_type_name
+av_hwframe_ctx_alloc
+av_hwframe_ctx_init
+av_hwdevice_ctx_alloc
+av_hwdevice_ctx_init
+av_hwframe_transfer_get_formats
+av_hwdevice_ctx_create_derived
+av_malloc_array
+av_mallocz_array
diff --git a/media/ffvpx/libavutil/avutilres.rc b/media/ffvpx/libavutil/avutilres.rc
new file mode 100644
index 0000000000..40a75eb377
--- /dev/null
+++ b/media/ffvpx/libavutil/avutilres.rc
@@ -0,0 +1,55 @@
+/*
+ * Windows resource file for libavutil
+ *
+ * Copyright (C) 2012 James Almer
+ * Copyright (C) 2013 Tiancheng "Timothy" Gu
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <windows.h>
+#include "libavutil/version.h"
+#include "libavutil/ffversion.h"
+#include "config.h"
+
+1 VERSIONINFO
+FILEVERSION     LIBAVUTIL_VERSION_MAJOR, LIBAVUTIL_VERSION_MINOR, LIBAVUTIL_VERSION_MICRO, 0
+PRODUCTVERSION  LIBAVUTIL_VERSION_MAJOR, LIBAVUTIL_VERSION_MINOR, LIBAVUTIL_VERSION_MICRO, 0
+FILEFLAGSMASK   VS_FFI_FILEFLAGSMASK
+FILEOS          VOS_NT_WINDOWS32
+FILETYPE        VFT_DLL
+{
+    BLOCK "StringFileInfo"
+    {
+        BLOCK "040904B0"
+        {
+            VALUE "CompanyName",      "FFmpeg Project"
+            VALUE "FileDescription",  "FFmpeg utility library"
+            VALUE "FileVersion",      AV_STRINGIFY(LIBAVUTIL_VERSION)
+            VALUE "InternalName",     "libavutil"
+            VALUE "LegalCopyright",   "Copyright (C) 2000-" AV_STRINGIFY(CONFIG_THIS_YEAR) " FFmpeg Project"
+            VALUE "OriginalFilename", "avutil" BUILDSUF "-" AV_STRINGIFY(LIBAVUTIL_VERSION_MAJOR) SLIBSUF
+            VALUE "ProductName",      "FFmpeg"
+            VALUE "ProductVersion",   FFMPEG_VERSION
+        }
+    }
+
+    BLOCK "VarFileInfo"
+    {
+        VALUE "Translation", 0x0409, 0x04B0
+    }
+}
diff --git a/media/ffvpx/libavutil/base64.c b/media/ffvpx/libavutil/base64.c
new file mode 100644
index 0000000000..25ae8c411c
--- /dev/null
+++ b/media/ffvpx/libavutil/base64.c
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @brief Base64 encode/decode
+ * @author Ryan Martell <rdm4@martellventures.com> (with lots of Michael)
+ */
+
+#include "common.h"
+#include "base64.h"
+#include "intreadwrite.h"
+#include "timer.h"
+
+/* ---------------- private code */
+static const uint8_t map2[256] =
+{
+    0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff,
+
+    0x3e, 0xff, 0xff, 0xff, 0x3f, 0x34, 0x35, 0x36,
+    0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0xff,
+    0xff, 0xff, 0xfe, 0xff, 0xff, 0xff, 0x00, 0x01,
+    0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
+    0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
+    0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1a, 0x1b,
+    0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
+    0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
+    0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33,
+
+                      0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+};
+
+#define BASE64_DEC_STEP(i) do { \
+    bits = map2[in[i]]; \
+    if (bits & 0x80) \
+        goto out ## i; \
+    v = i ? (v << 6) + bits : bits; \
+} while(0)
+
+int av_base64_decode(uint8_t *out, const char *in_str, int out_size)
+{
+    uint8_t *dst = out;
+    uint8_t *end = out + out_size;
+    // no sign extension
+    const uint8_t *in = in_str;
+    unsigned bits = 0xff;
+    unsigned v;
+
+    while (end - dst > 3) {
+        BASE64_DEC_STEP(0);
+        BASE64_DEC_STEP(1);
+        BASE64_DEC_STEP(2);
+        BASE64_DEC_STEP(3);
+        // Using AV_WB32 directly confuses compiler
+        v = av_be2ne32(v << 8);
+        AV_WN32(dst, v);
+        dst += 3;
+        in += 4;
+    }
+    if (end - dst) {
+        BASE64_DEC_STEP(0);
+        BASE64_DEC_STEP(1);
+        BASE64_DEC_STEP(2);
+        BASE64_DEC_STEP(3);
+        *dst++ = v >> 16;
+        if (end - dst)
+            *dst++ = v >> 8;
+        if (end - dst)
+            *dst++ = v;
+        in += 4;
+    }
+    while (1) {
+        BASE64_DEC_STEP(0);
+        in++;
+        BASE64_DEC_STEP(0);
+        in++;
+        BASE64_DEC_STEP(0);
+        in++;
+        BASE64_DEC_STEP(0);
+        in++;
+    }
+
+out3:
+    *dst++ = v >> 10;
+    v <<= 2;
+out2:
+    *dst++ = v >> 4;
+out1:
+out0:
+    return bits & 1 ? AVERROR_INVALIDDATA : dst - out;
+}
+
+/*****************************************************************************
+* b64_encode: Stolen from VLC's http.c.
+* Simplified by Michael.
+* Fixed edge cases and made it work from data (vs. strings) by Ryan.
+*****************************************************************************/
+
+char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size)
+{
+    static const char b64[] =
+        "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+    char *ret, *dst;
+    unsigned i_bits = 0;
+    int i_shift = 0;
+    int bytes_remaining = in_size;
+
+    if (in_size >= UINT_MAX / 4 ||
+        out_size < AV_BASE64_SIZE(in_size))
+        return NULL;
+    ret = dst = out;
+    while (bytes_remaining > 3) {
+        i_bits = AV_RB32(in);
+        in += 3; bytes_remaining -= 3;
+        *dst++ = b64[ i_bits>>26        ];
+        *dst++ = b64[(i_bits>>20) & 0x3F];
+        *dst++ = b64[(i_bits>>14) & 0x3F];
+        *dst++ = b64[(i_bits>>8 ) & 0x3F];
+    }
+    i_bits = 0;
+    while (bytes_remaining) {
+        i_bits = (i_bits << 8) + *in++;
+        bytes_remaining--;
+        i_shift += 8;
+    }
+    while (i_shift > 0) {
+        *dst++ = b64[(i_bits << 6 >> i_shift) & 0x3f];
+        i_shift -= 6;
+    }
+    while ((dst - ret) & 3)
+        *dst++ = '=';
+    *dst = '\0';
+
+    return ret;
+}
diff --git a/media/ffvpx/libavutil/base64.h b/media/ffvpx/libavutil/base64.h
new file mode 100644
index 0000000000..2954c12d42
--- /dev/null
+++ b/media/ffvpx/libavutil/base64.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2006 Ryan Martell. (rdm4@martellventures.com)
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_BASE64_H
+#define AVUTIL_BASE64_H
+
+#include <stdint.h>
+
+/**
+ * @defgroup lavu_base64 Base64
+ * @ingroup lavu_crypto
+ * @{
+ */
+
+/**
+ * Decode a base64-encoded string.
+ *
+ * @param out      buffer for decoded data
+ * @param in       null-terminated input string
+ * @param out_size size in bytes of the out buffer, must be at
+ *                 least 3/4 of the length of in, that is AV_BASE64_DECODE_SIZE(strlen(in))
+ * @return         number of bytes written, or a negative value in case of
+ *                 invalid input
+ */
+int av_base64_decode(uint8_t *out, const char *in, int out_size);
+
+/**
+ * Calculate the output size in bytes needed to decode a base64 string
+ * with length x to a data buffer.
+ */
+#define AV_BASE64_DECODE_SIZE(x) ((x) * 3LL / 4)
+
+/**
+ * Encode data to base64 and null-terminate.
+ *
+ * @param out      buffer for encoded data
+ * @param out_size size in bytes of the out buffer (including the
+ *                 null terminator), must be at least AV_BASE64_SIZE(in_size)
+ * @param in       input buffer containing the data to encode
+ * @param in_size  size in bytes of the in buffer
+ * @return         out or NULL in case of error
+ */
+char *av_base64_encode(char *out, int out_size, const uint8_t *in, int in_size);
+
+/**
+ * Calculate the output size needed to base64-encode x bytes to a
+ * null-terminated string.
+ */
+#define AV_BASE64_SIZE(x)  (((x)+2) / 3 * 4 + 1)
+
+ /**
+  * @}
+  */
+
+#endif /* AVUTIL_BASE64_H */
diff --git a/media/ffvpx/libavutil/bprint.c b/media/ffvpx/libavutil/bprint.c
new file mode 100644
index 0000000000..2f059c5ba6
--- /dev/null
+++ b/media/ffvpx/libavutil/bprint.c
@@ -0,0 +1,305 @@
+/*
+ * Copyright (c) 2012 Nicolas George
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include "avassert.h"
+#include "avstring.h"
+#include "bprint.h"
+#include "common.h"
+#include "compat/va_copy.h"
+#include "error.h"
+#include "mem.h"
+
+#define av_bprint_room(buf) ((buf)->size - FFMIN((buf)->len, (buf)->size))
+#define av_bprint_is_allocated(buf) ((buf)->str != (buf)->reserved_internal_buffer)
+
+static int av_bprint_alloc(AVBPrint *buf, unsigned room)
+{
+    char *old_str, *new_str;
+    unsigned min_size, new_size;
+
+    if (buf->size == buf->size_max)
+        return AVERROR(EIO);
+    if (!av_bprint_is_complete(buf))
+        return AVERROR_INVALIDDATA; /* it is already truncated anyway */
+    min_size = buf->len + 1 + FFMIN(UINT_MAX - buf->len - 1, room);
+    new_size = buf->size > buf->size_max / 2 ? buf->size_max : buf->size * 2;
+    if (new_size < min_size)
+        new_size = FFMIN(buf->size_max, min_size);
+    old_str = av_bprint_is_allocated(buf) ? buf->str : NULL;
+    new_str = av_realloc(old_str, new_size);
+    if (!new_str)
+        return AVERROR(ENOMEM);
+    if (!old_str)
+        memcpy(new_str, buf->str, buf->len + 1);
+    buf->str  = new_str;
+    buf->size = new_size;
+    return 0;
+}
+
+static void av_bprint_grow(AVBPrint *buf, unsigned extra_len)
+{
+    /* arbitrary margin to avoid small overflows */
+    extra_len = FFMIN(extra_len, UINT_MAX - 5 - buf->len);
+    buf->len += extra_len;
+    if (buf->size)
+        buf->str[FFMIN(buf->len, buf->size - 1)] = 0;
+}
+
+void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
+{
+    unsigned size_auto = (char *)buf + sizeof(*buf) -
+                         buf->reserved_internal_buffer;
+
+    if (size_max == 1)
+        size_max = size_auto;
+    buf->str      = buf->reserved_internal_buffer;
+    buf->len      = 0;
+    buf->size     = FFMIN(size_auto, size_max);
+    buf->size_max = size_max;
+    *buf->str = 0;
+    if (size_init > buf->size)
+        av_bprint_alloc(buf, size_init - 1);
+}
+
+void av_bprint_init_for_buffer(AVBPrint *buf, char *buffer, unsigned size)
+{
+    buf->str      = buffer;
+    buf->len      = 0;
+    buf->size     = size;
+    buf->size_max = size;
+    *buf->str = 0;
+}
+
+void av_bprintf(AVBPrint *buf, const char *fmt, ...)
+{
+    unsigned room;
+    char *dst;
+    va_list vl;
+    int extra_len;
+
+    while (1) {
+        room = av_bprint_room(buf);
+        dst = room ? buf->str + buf->len : NULL;
+        va_start(vl, fmt);
+        extra_len = vsnprintf(dst, room, fmt, vl);
+        va_end(vl);
+        if (extra_len <= 0)
+            return;
+        if (extra_len < room)
+            break;
+        if (av_bprint_alloc(buf, extra_len))
+            break;
+    }
+    av_bprint_grow(buf, extra_len);
+}
+
+void av_vbprintf(AVBPrint *buf, const char *fmt, va_list vl_arg)
+{
+    unsigned room;
+    char *dst;
+    int extra_len;
+    va_list vl;
+
+    while (1) {
+        room = av_bprint_room(buf);
+        dst = room ? buf->str + buf->len : NULL;
+        va_copy(vl, vl_arg);
+        extra_len = vsnprintf(dst, room, fmt, vl);
+        va_end(vl);
+        if (extra_len <= 0)
+            return;
+        if (extra_len < room)
+            break;
+        if (av_bprint_alloc(buf, extra_len))
+            break;
+    }
+    av_bprint_grow(buf, extra_len);
+}
+
+void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
+{
+    unsigned room, real_n;
+
+    while (1) {
+        room = av_bprint_room(buf);
+        if (n < room)
+            break;
+        if (av_bprint_alloc(buf, n))
+            break;
+    }
+    if (room) {
+        real_n = FFMIN(n, room - 1);
+        memset(buf->str + buf->len, c, real_n);
+    }
+    av_bprint_grow(buf, n);
+}
+
+void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned size)
+{
+    unsigned room, real_n;
+
+    while (1) {
+        room = av_bprint_room(buf);
+        if (size < room)
+            break;
+        if (av_bprint_alloc(buf, size))
+            break;
+    }
+    if (room) {
+        real_n = FFMIN(size, room - 1);
+        memcpy(buf->str + buf->len, data, real_n);
+    }
+    av_bprint_grow(buf, size);
+}
+
+void av_bprint_strftime(AVBPrint *buf, const char *fmt, const struct tm *tm)
+{
+    unsigned room;
+    size_t l;
+
+    if (!*fmt)
+        return;
+    while (1) {
+        room = av_bprint_room(buf);
+        if (room && (l = strftime(buf->str + buf->len, room, fmt, tm)))
+            break;
+        /* strftime does not tell us how much room it would need: let us
+           retry with twice as much until the buffer is large enough */
+        room = !room ? strlen(fmt) + 1 :
+               room <= INT_MAX / 2 ? room * 2 : INT_MAX;
+        if (av_bprint_alloc(buf, room)) {
+            /* impossible to grow, try to manage something useful anyway */
+            room = av_bprint_room(buf);
+            if (room < 1024) {
+                /* if strftime fails because the buffer has (almost) reached
+                   its maximum size, let us try in a local buffer; 1k should
+                   be enough to format any real date+time string */
+                char buf2[1024];
+                if ((l = strftime(buf2, sizeof(buf2), fmt, tm))) {
+                    av_bprintf(buf, "%s", buf2);
+                    return;
+                }
+            }
+            if (room) {
+                /* if anything else failed and the buffer is not already
+                   truncated, let us add a stock string and force truncation */
+                static const char txt[] = "[truncated strftime output]";
+                memset(buf->str + buf->len, '!', room);
+                memcpy(buf->str + buf->len, txt, FFMIN(sizeof(txt) - 1, room));
+                av_bprint_grow(buf, room); /* force truncation */
+            }
+            return;
+        }
+    }
+    av_bprint_grow(buf, l);
+}
+
+void av_bprint_get_buffer(AVBPrint *buf, unsigned size,
+                          unsigned char **mem, unsigned *actual_size)
+{
+    if (size > av_bprint_room(buf))
+        av_bprint_alloc(buf, size);
+    *actual_size = av_bprint_room(buf);
+    *mem = *actual_size ? buf->str + buf->len : NULL;
+}
+
+void av_bprint_clear(AVBPrint *buf)
+{
+    if (buf->len) {
+        *buf->str = 0;
+        buf->len  = 0;
+    }
+}
+
+int av_bprint_finalize(AVBPrint *buf, char **ret_str)
+{
+    unsigned real_size = FFMIN(buf->len + 1, buf->size);
+    char *str;
+    int ret = 0;
+
+    if (ret_str) {
+        if (av_bprint_is_allocated(buf)) {
+            str = av_realloc(buf->str, real_size);
+            if (!str)
+                str = buf->str;
+            buf->str = NULL;
+        } else {
+            str = av_malloc(real_size);
+            if (str)
+                memcpy(str, buf->str, real_size);
+            else
+                ret = AVERROR(ENOMEM);
+        }
+        *ret_str = str;
+    } else {
+        if (av_bprint_is_allocated(buf))
+            av_freep(&buf->str);
+    }
+    buf->size = real_size;
+    return ret;
+}
+
+#define WHITESPACES " \n\t\r"
+
+void av_bprint_escape(AVBPrint *dstbuf, const char *src, const char *special_chars,
+                      enum AVEscapeMode mode, int flags)
+{
+    const char *src0 = src;
+
+    if (mode == AV_ESCAPE_MODE_AUTO)
+        mode = AV_ESCAPE_MODE_BACKSLASH; /* TODO: implement a heuristic */
+
+    switch (mode) {
+    case AV_ESCAPE_MODE_QUOTE:
+        /* enclose the string between '' */
+        av_bprint_chars(dstbuf, '\'', 1);
+        for (; *src; src++) {
+            if (*src == '\'')
+                av_bprintf(dstbuf, "'\\''");
+            else
+                av_bprint_chars(dstbuf, *src, 1);
+        }
+        av_bprint_chars(dstbuf, '\'', 1);
+        break;
+
+    /* case AV_ESCAPE_MODE_BACKSLASH or unknown mode */
+    default:
+        /* \-escape characters */
+        for (; *src; src++) {
+            int is_first_last       = src == src0 || !*(src+1);
+            int is_ws               = !!strchr(WHITESPACES, *src);
+            int is_strictly_special = special_chars && strchr(special_chars, *src);
+            int is_special          =
+                is_strictly_special || strchr("'\\", *src) ||
+                (is_ws && (flags & AV_ESCAPE_FLAG_WHITESPACE));
+
+            if (is_strictly_special ||
+                (!(flags & AV_ESCAPE_FLAG_STRICT) &&
+                 (is_special || (is_ws && is_first_last))))
+                av_bprint_chars(dstbuf, '\\', 1);
+            av_bprint_chars(dstbuf, *src, 1);
+        }
+        break;
+    }
+}
diff --git a/media/ffvpx/libavutil/bprint.h b/media/ffvpx/libavutil/bprint.h
new file mode 100644
index 0000000000..c09b1ac1e1
--- /dev/null
+++ b/media/ffvpx/libavutil/bprint.h
@@ -0,0 +1,219 @@
+/*
+ * Copyright (c) 2012 Nicolas George
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_BPRINT_H
+#define AVUTIL_BPRINT_H
+
+#include <stdarg.h>
+
+#include "attributes.h"
+#include "avstring.h"
+
+/**
+ * Define a structure with extra padding to a fixed size
+ * This helps ensuring binary compatibility with future versions.
+ */
+
+#define FF_PAD_STRUCTURE(name, size, ...) \
+struct ff_pad_helper_##name { __VA_ARGS__ }; \
+typedef struct name { \
+    __VA_ARGS__ \
+    char reserved_padding[size - sizeof(struct ff_pad_helper_##name)]; \
+} name;
+
+/**
+ * Buffer to print data progressively
+ *
+ * The string buffer grows as necessary and is always 0-terminated.
+ * The content of the string is never accessed, and thus is
+ * encoding-agnostic and can even hold binary data.
+ *
+ * Small buffers are kept in the structure itself, and thus require no
+ * memory allocation at all (unless the contents of the buffer is needed
+ * after the structure goes out of scope). This is almost as lightweight as
+ * declaring a local "char buf[512]".
+ *
+ * The length of the string can go beyond the allocated size: the buffer is
+ * then truncated, but the functions still keep account of the actual total
+ * length.
+ *
+ * In other words, buf->len can be greater than buf->size and records the
+ * total length of what would have been to the buffer if there had been
+ * enough memory.
+ *
+ * Append operations do not need to be tested for failure: if a memory
+ * allocation fails, data stop being appended to the buffer, but the length
+ * is still updated. This situation can be tested with
+ * av_bprint_is_complete().
+ *
+ * The size_max field determines several possible behaviours:
+ *
+ * size_max = -1 (= UINT_MAX) or any large value will let the buffer be
+ * reallocated as necessary, with an amortized linear cost.
+ *
+ * size_max = 0 prevents writing anything to the buffer: only the total
+ * length is computed. The write operations can then possibly be repeated in
+ * a buffer with exactly the necessary size
+ * (using size_init = size_max = len + 1).
+ *
+ * size_max = 1 is automatically replaced by the exact size available in the
+ * structure itself, thus ensuring no dynamic memory allocation. The
+ * internal buffer is large enough to hold a reasonable paragraph of text,
+ * such as the current paragraph.
+ */
+
+FF_PAD_STRUCTURE(AVBPrint, 1024,
+    char *str;         /**< string so far */
+    unsigned len;      /**< length so far */
+    unsigned size;     /**< allocated memory */
+    unsigned size_max; /**< maximum allocated memory */
+    char reserved_internal_buffer[1];
+)
+
+/**
+ * Convenience macros for special values for av_bprint_init() size_max
+ * parameter.
+ */
+#define AV_BPRINT_SIZE_UNLIMITED  ((unsigned)-1)
+#define AV_BPRINT_SIZE_AUTOMATIC  1
+#define AV_BPRINT_SIZE_COUNT_ONLY 0
+
+/**
+ * Init a print buffer.
+ *
+ * @param buf        buffer to init
+ * @param size_init  initial size (including the final 0)
+ * @param size_max   maximum size;
+ *                   0 means do not write anything, just count the length;
+ *                   1 is replaced by the maximum value for automatic storage;
+ *                   any large value means that the internal buffer will be
+ *                   reallocated as needed up to that limit; -1 is converted to
+ *                   UINT_MAX, the largest limit possible.
+ *                   Check also AV_BPRINT_SIZE_* macros.
+ */
+void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max);
+
+/**
+ * Init a print buffer using a pre-existing buffer.
+ *
+ * The buffer will not be reallocated.
+ *
+ * @param buf     buffer structure to init
+ * @param buffer  byte buffer to use for the string data
+ * @param size    size of buffer
+ */
+void av_bprint_init_for_buffer(AVBPrint *buf, char *buffer, unsigned size);
+
+/**
+ * Append a formatted string to a print buffer.
+ */
+void av_bprintf(AVBPrint *buf, const char *fmt, ...) av_printf_format(2, 3);
+
+/**
+ * Append a formatted string to a print buffer.
+ */
+void av_vbprintf(AVBPrint *buf, const char *fmt, va_list vl_arg);
+
+/**
+ * Append char c n times to a print buffer.
+ */
+void av_bprint_chars(AVBPrint *buf, char c, unsigned n);
+
+/**
+ * Append data to a print buffer.
+ *
+ * param buf  bprint buffer to use
+ * param data pointer to data
+ * param size size of data
+ */
+void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned size);
+
+struct tm;
+/**
+ * Append a formatted date and time to a print buffer.
+ *
+ * param buf  bprint buffer to use
+ * param fmt  date and time format string, see strftime()
+ * param tm   broken-down time structure to translate
+ *
+ * @note due to poor design of the standard strftime function, it may
+ * produce poor results if the format string expands to a very long text and
+ * the bprint buffer is near the limit stated by the size_max option.
+ */
+void av_bprint_strftime(AVBPrint *buf, const char *fmt, const struct tm *tm);
+
+/**
+ * Allocate bytes in the buffer for external use.
+ *
+ * @param[in]  buf          buffer structure
+ * @param[in]  size         required size
+ * @param[out] mem          pointer to the memory area
+ * @param[out] actual_size  size of the memory area after allocation;
+ *                          can be larger or smaller than size
+ */
+void av_bprint_get_buffer(AVBPrint *buf, unsigned size,
+                          unsigned char **mem, unsigned *actual_size);
+
+/**
+ * Reset the string to "" but keep internal allocated data.
+ */
+void av_bprint_clear(AVBPrint *buf);
+
+/**
+ * Test if the print buffer is complete (not truncated).
+ *
+ * It may have been truncated due to a memory allocation failure
+ * or the size_max limit (compare size and size_max if necessary).
+ */
+static inline int av_bprint_is_complete(const AVBPrint *buf)
+{
+    return buf->len < buf->size;
+}
+
+/**
+ * Finalize a print buffer.
+ *
+ * The print buffer can no longer be used afterwards,
+ * but the len and size fields are still valid.
+ *
+ * @arg[out] ret_str  if not NULL, used to return a permanent copy of the
+ *                    buffer contents, or NULL if memory allocation fails;
+ *                    if NULL, the buffer is discarded and freed
+ * @return  0 for success or error code (probably AVERROR(ENOMEM))
+ */
+int av_bprint_finalize(AVBPrint *buf, char **ret_str);
+
+/**
+ * Escape the content in src and append it to dstbuf.
+ *
+ * @param dstbuf        already inited destination bprint buffer
+ * @param src           string containing the text to escape
+ * @param special_chars string containing the special characters which
+ *                      need to be escaped, can be NULL
+ * @param mode          escape mode to employ, see AV_ESCAPE_MODE_* macros.
+ *                      Any unknown value for mode will be considered equivalent to
+ *                      AV_ESCAPE_MODE_BACKSLASH, but this behaviour can change without
+ *                      notice.
+ * @param flags         flags which control how to escape, see AV_ESCAPE_FLAG_* macros
+ */
+void av_bprint_escape(AVBPrint *dstbuf, const char *src, const char *special_chars,
+                      enum AVEscapeMode mode, int flags);
+
+#endif /* AVUTIL_BPRINT_H */
diff --git a/media/ffvpx/libavutil/bswap.h b/media/ffvpx/libavutil/bswap.h
new file mode 100644
index 0000000000..91cb79538d
--- /dev/null
+++ b/media/ffvpx/libavutil/bswap.h
@@ -0,0 +1,109 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * byte swapping routines
+ */
+
+#ifndef AVUTIL_BSWAP_H
+#define AVUTIL_BSWAP_H
+
+#include <stdint.h>
+#include "libavutil/avconfig.h"
+#include "attributes.h"
+
+#ifdef HAVE_AV_CONFIG_H
+
+#include "config.h"
+
+#if   ARCH_AARCH64
+#   include "aarch64/bswap.h"
+#elif ARCH_ARM
+#   include "arm/bswap.h"
+#elif ARCH_AVR32
+#   include "avr32/bswap.h"
+#elif ARCH_SH4
+#   include "sh4/bswap.h"
+#elif ARCH_X86
+#   include "x86/bswap.h"
+#endif
+
+#endif /* HAVE_AV_CONFIG_H */
+
+#define AV_BSWAP16C(x) (((x) << 8 & 0xff00)  | ((x) >> 8 & 0x00ff))
+#define AV_BSWAP32C(x) (AV_BSWAP16C(x) << 16 | AV_BSWAP16C((x) >> 16))
+#define AV_BSWAP64C(x) (AV_BSWAP32C(x) << 32 | AV_BSWAP32C((x) >> 32))
+
+#define AV_BSWAPC(s, x) AV_BSWAP##s##C(x)
+
+#ifndef av_bswap16
+static av_always_inline av_const uint16_t av_bswap16(uint16_t x)
+{
+    x= (x>>8) | (x<<8);
+    return x;
+}
+#endif
+
+#ifndef av_bswap32
+static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
+{
+    return AV_BSWAP32C(x);
+}
+#endif
+
+#ifndef av_bswap64
+static inline uint64_t av_const av_bswap64(uint64_t x)
+{
+    return (uint64_t)av_bswap32(x) << 32 | av_bswap32(x >> 32);
+}
+#endif
+
+// be2ne ... big-endian to native-endian
+// le2ne ... little-endian to native-endian
+
+#if AV_HAVE_BIGENDIAN
+#define av_be2ne16(x) (x)
+#define av_be2ne32(x) (x)
+#define av_be2ne64(x) (x)
+#define av_le2ne16(x) av_bswap16(x)
+#define av_le2ne32(x) av_bswap32(x)
+#define av_le2ne64(x) av_bswap64(x)
+#define AV_BE2NEC(s, x) (x)
+#define AV_LE2NEC(s, x) AV_BSWAPC(s, x)
+#else
+#define av_be2ne16(x) av_bswap16(x)
+#define av_be2ne32(x) av_bswap32(x)
+#define av_be2ne64(x) av_bswap64(x)
+#define av_le2ne16(x) (x)
+#define av_le2ne32(x) (x)
+#define av_le2ne64(x) (x)
+#define AV_BE2NEC(s, x) AV_BSWAPC(s, x)
+#define AV_LE2NEC(s, x) (x)
+#endif
+
+#define AV_BE2NE16C(x) AV_BE2NEC(16, x)
+#define AV_BE2NE32C(x) AV_BE2NEC(32, x)
+#define AV_BE2NE64C(x) AV_BE2NEC(64, x)
+#define AV_LE2NE16C(x) AV_LE2NEC(16, x)
+#define AV_LE2NE32C(x) AV_LE2NEC(32, x)
+#define AV_LE2NE64C(x) AV_LE2NEC(64, x)
+
+#endif /* AVUTIL_BSWAP_H */
diff --git a/media/ffvpx/libavutil/buffer.c b/media/ffvpx/libavutil/buffer.c
new file mode 100644
index 0000000000..8d1aa5fa84
--- /dev/null
+++ b/media/ffvpx/libavutil/buffer.c
@@ -0,0 +1,357 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdatomic.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "buffer_internal.h"
+#include "common.h"
+#include "mem.h"
+#include "thread.h"
+
+AVBufferRef *av_buffer_create(uint8_t *data, int size,
+                              void (*free)(void *opaque, uint8_t *data),
+                              void *opaque, int flags)
+{
+    AVBufferRef *ref = NULL;
+    AVBuffer    *buf = NULL;
+
+    buf = av_mallocz(sizeof(*buf));
+    if (!buf)
+        return NULL;
+
+    buf->data     = data;
+    buf->size     = size;
+    buf->free     = free ? free : av_buffer_default_free;
+    buf->opaque   = opaque;
+
+    atomic_init(&buf->refcount, 1);
+
+    if (flags & AV_BUFFER_FLAG_READONLY)
+        buf->flags |= BUFFER_FLAG_READONLY;
+
+    ref = av_mallocz(sizeof(*ref));
+    if (!ref) {
+        av_freep(&buf);
+        return NULL;
+    }
+
+    ref->buffer = buf;
+    ref->data   = data;
+    ref->size   = size;
+
+    return ref;
+}
+
+void av_buffer_default_free(void *opaque, uint8_t *data)
+{
+    av_free(data);
+}
+
+AVBufferRef *av_buffer_alloc(int size)
+{
+    AVBufferRef *ret = NULL;
+    uint8_t    *data = NULL;
+
+    data = av_malloc(size);
+    if (!data)
+        return NULL;
+
+    ret = av_buffer_create(data, size, av_buffer_default_free, NULL, 0);
+    if (!ret)
+        av_freep(&data);
+
+    return ret;
+}
+
+AVBufferRef *av_buffer_allocz(int size)
+{
+    AVBufferRef *ret = av_buffer_alloc(size);
+    if (!ret)
+        return NULL;
+
+    memset(ret->data, 0, size);
+    return ret;
+}
+
+AVBufferRef *av_buffer_ref(AVBufferRef *buf)
+{
+    AVBufferRef *ret = av_mallocz(sizeof(*ret));
+
+    if (!ret)
+        return NULL;
+
+    *ret = *buf;
+
+    atomic_fetch_add_explicit(&buf->buffer->refcount, 1, memory_order_relaxed);
+
+    return ret;
+}
+
+static void buffer_replace(AVBufferRef **dst, AVBufferRef **src)
+{
+    AVBuffer *b;
+
+    b = (*dst)->buffer;
+
+    if (src) {
+        **dst = **src;
+        av_freep(src);
+    } else
+        av_freep(dst);
+
+    if (atomic_fetch_add_explicit(&b->refcount, -1, memory_order_acq_rel) == 1) {
+        b->free(b->opaque, b->data);
+        av_freep(&b);
+    }
+}
+
+void av_buffer_unref(AVBufferRef **buf)
+{
+    if (!buf || !*buf)
+        return;
+
+    buffer_replace(buf, NULL);
+}
+
+int av_buffer_is_writable(const AVBufferRef *buf)
+{
+    if (buf->buffer->flags & AV_BUFFER_FLAG_READONLY)
+        return 0;
+
+    return atomic_load(&buf->buffer->refcount) == 1;
+}
+
+void *av_buffer_get_opaque(const AVBufferRef *buf)
+{
+    return buf->buffer->opaque;
+}
+
+int av_buffer_get_ref_count(const AVBufferRef *buf)
+{
+    return atomic_load(&buf->buffer->refcount);
+}
+
+int av_buffer_make_writable(AVBufferRef **pbuf)
+{
+    AVBufferRef *newbuf, *buf = *pbuf;
+
+    if (av_buffer_is_writable(buf))
+        return 0;
+
+    newbuf = av_buffer_alloc(buf->size);
+    if (!newbuf)
+        return AVERROR(ENOMEM);
+
+    memcpy(newbuf->data, buf->data, buf->size);
+
+    buffer_replace(pbuf, &newbuf);
+
+    return 0;
+}
+
+int av_buffer_realloc(AVBufferRef **pbuf, int size)
+{
+    AVBufferRef *buf = *pbuf;
+    uint8_t *tmp;
+
+    if (!buf) {
+        /* allocate a new buffer with av_realloc(), so it will be reallocatable
+         * later */
+        uint8_t *data = av_realloc(NULL, size);
+        if (!data)
+            return AVERROR(ENOMEM);
+
+        buf = av_buffer_create(data, size, av_buffer_default_free, NULL, 0);
+        if (!buf) {
+            av_freep(&data);
+            return AVERROR(ENOMEM);
+        }
+
+        buf->buffer->flags |= BUFFER_FLAG_REALLOCATABLE;
+        *pbuf = buf;
+
+        return 0;
+    } else if (buf->size == size)
+        return 0;
+
+    if (!(buf->buffer->flags & BUFFER_FLAG_REALLOCATABLE) ||
+        !av_buffer_is_writable(buf) || buf->data != buf->buffer->data) {
+        /* cannot realloc, allocate a new reallocable buffer and copy data */
+        AVBufferRef *new = NULL;
+
+        av_buffer_realloc(&new, size);
+        if (!new)
+            return AVERROR(ENOMEM);
+
+        memcpy(new->data, buf->data, FFMIN(size, buf->size));
+
+        buffer_replace(pbuf, &new);
+        return 0;
+    }
+
+    tmp = av_realloc(buf->buffer->data, size);
+    if (!tmp)
+        return AVERROR(ENOMEM);
+
+    buf->buffer->data = buf->data = tmp;
+    buf->buffer->size = buf->size = size;
+    return 0;
+}
+
+AVBufferPool *av_buffer_pool_init2(int size, void *opaque,
+                                   AVBufferRef* (*alloc)(void *opaque, int size),
+                                   void (*pool_free)(void *opaque))
+{
+    AVBufferPool *pool = av_mallocz(sizeof(*pool));
+    if (!pool)
+        return NULL;
+
+    ff_mutex_init(&pool->mutex, NULL);
+
+    pool->size      = size;
+    pool->opaque    = opaque;
+    pool->alloc2    = alloc;
+    pool->pool_free = pool_free;
+
+    atomic_init(&pool->refcount, 1);
+
+    return pool;
+}
+
+AVBufferPool *av_buffer_pool_init(int size, AVBufferRef* (*alloc)(int size))
+{
+    AVBufferPool *pool = av_mallocz(sizeof(*pool));
+    if (!pool)
+        return NULL;
+
+    ff_mutex_init(&pool->mutex, NULL);
+
+    pool->size     = size;
+    pool->alloc    = alloc ? alloc : av_buffer_alloc;
+
+    atomic_init(&pool->refcount, 1);
+
+    return pool;
+}
+
+/*
+ * This function gets called when the pool has been uninited and
+ * all the buffers returned to it.
+ */
+static void buffer_pool_free(AVBufferPool *pool)
+{
+    while (pool->pool) {
+        BufferPoolEntry *buf = pool->pool;
+        pool->pool = buf->next;
+
+        buf->free(buf->opaque, buf->data);
+        av_freep(&buf);
+    }
+    ff_mutex_destroy(&pool->mutex);
+
+    if (pool->pool_free)
+        pool->pool_free(pool->opaque);
+
+    av_freep(&pool);
+}
+
+void av_buffer_pool_uninit(AVBufferPool **ppool)
+{
+    AVBufferPool *pool;
+
+    if (!ppool || !*ppool)
+        return;
+    pool   = *ppool;
+    *ppool = NULL;
+
+    if (atomic_fetch_add_explicit(&pool->refcount, -1, memory_order_acq_rel) == 1)
+        buffer_pool_free(pool);
+}
+
+static void pool_release_buffer(void *opaque, uint8_t *data)
+{
+    BufferPoolEntry *buf = opaque;
+    AVBufferPool *pool = buf->pool;
+
+    if(CONFIG_MEMORY_POISONING)
+        memset(buf->data, FF_MEMORY_POISON, pool->size);
+
+    ff_mutex_lock(&pool->mutex);
+    buf->next = pool->pool;
+    pool->pool = buf;
+    ff_mutex_unlock(&pool->mutex);
+
+    if (atomic_fetch_add_explicit(&pool->refcount, -1, memory_order_acq_rel) == 1)
+        buffer_pool_free(pool);
+}
+
+/* allocate a new buffer and override its free() callback so that
+ * it is returned to the pool on free */
+static AVBufferRef *pool_alloc_buffer(AVBufferPool *pool)
+{
+    BufferPoolEntry *buf;
+    AVBufferRef     *ret;
+
+    ret = pool->alloc2 ? pool->alloc2(pool->opaque, pool->size) :
+                         pool->alloc(pool->size);
+    if (!ret)
+        return NULL;
+
+    buf = av_mallocz(sizeof(*buf));
+    if (!buf) {
+        av_buffer_unref(&ret);
+        return NULL;
+    }
+
+    buf->data   = ret->buffer->data;
+    buf->opaque = ret->buffer->opaque;
+    buf->free   = ret->buffer->free;
+    buf->pool   = pool;
+
+    ret->buffer->opaque = buf;
+    ret->buffer->free   = pool_release_buffer;
+
+    return ret;
+}
+
+AVBufferRef *av_buffer_pool_get(AVBufferPool *pool)
+{
+    AVBufferRef *ret;
+    BufferPoolEntry *buf;
+
+    ff_mutex_lock(&pool->mutex);
+    buf = pool->pool;
+    if (buf) {
+        ret = av_buffer_create(buf->data, pool->size, pool_release_buffer,
+                               buf, 0);
+        if (ret) {
+            pool->pool = buf->next;
+            buf->next = NULL;
+        }
+    } else {
+        ret = pool_alloc_buffer(pool);
+    }
+    ff_mutex_unlock(&pool->mutex);
+
+    if (ret)
+        atomic_fetch_add_explicit(&pool->refcount, 1, memory_order_relaxed);
+
+    return ret;
+}
diff --git a/media/ffvpx/libavutil/buffer.h b/media/ffvpx/libavutil/buffer.h
new file mode 100644
index 0000000000..73b6bd0b14
--- /dev/null
+++ b/media/ffvpx/libavutil/buffer.h
@@ -0,0 +1,291 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @ingroup lavu_buffer
+ * refcounted data buffer API
+ */
+
+#ifndef AVUTIL_BUFFER_H
+#define AVUTIL_BUFFER_H
+
+#include <stdint.h>
+
+/**
+ * @defgroup lavu_buffer AVBuffer
+ * @ingroup lavu_data
+ *
+ * @{
+ * AVBuffer is an API for reference-counted data buffers.
+ *
+ * There are two core objects in this API -- AVBuffer and AVBufferRef. AVBuffer
+ * represents the data buffer itself; it is opaque and not meant to be accessed
+ * by the caller directly, but only through AVBufferRef. However, the caller may
+ * e.g. compare two AVBuffer pointers to check whether two different references
+ * are describing the same data buffer. AVBufferRef represents a single
+ * reference to an AVBuffer and it is the object that may be manipulated by the
+ * caller directly.
+ *
+ * There are two functions provided for creating a new AVBuffer with a single
+ * reference -- av_buffer_alloc() to just allocate a new buffer, and
+ * av_buffer_create() to wrap an existing array in an AVBuffer. From an existing
+ * reference, additional references may be created with av_buffer_ref().
+ * Use av_buffer_unref() to free a reference (this will automatically free the
+ * data once all the references are freed).
+ *
+ * The convention throughout this API and the rest of FFmpeg is such that the
+ * buffer is considered writable if there exists only one reference to it (and
+ * it has not been marked as read-only). The av_buffer_is_writable() function is
+ * provided to check whether this is true and av_buffer_make_writable() will
+ * automatically create a new writable buffer when necessary.
+ * Of course nothing prevents the calling code from violating this convention,
+ * however that is safe only when all the existing references are under its
+ * control.
+ *
+ * @note Referencing and unreferencing the buffers is thread-safe and thus
+ * may be done from multiple threads simultaneously without any need for
+ * additional locking.
+ *
+ * @note Two different references to the same buffer can point to different
+ * parts of the buffer (i.e. their AVBufferRef.data will not be equal).
+ */
+
+/**
+ * A reference counted buffer type. It is opaque and is meant to be used through
+ * references (AVBufferRef).
+ */
+typedef struct AVBuffer AVBuffer;
+
+/**
+ * A reference to a data buffer.
+ *
+ * The size of this struct is not a part of the public ABI and it is not meant
+ * to be allocated directly.
+ */
+typedef struct AVBufferRef {
+    AVBuffer *buffer;
+
+    /**
+     * The data buffer. It is considered writable if and only if
+     * this is the only reference to the buffer, in which case
+     * av_buffer_is_writable() returns 1.
+     */
+    uint8_t *data;
+    /**
+     * Size of data in bytes.
+     */
+    int      size;
+} AVBufferRef;
+
+/**
+ * Allocate an AVBuffer of the given size using av_malloc().
+ *
+ * @return an AVBufferRef of given size or NULL when out of memory
+ */
+AVBufferRef *av_buffer_alloc(int size);
+
+/**
+ * Same as av_buffer_alloc(), except the returned buffer will be initialized
+ * to zero.
+ */
+AVBufferRef *av_buffer_allocz(int size);
+
+/**
+ * Always treat the buffer as read-only, even when it has only one
+ * reference.
+ */
+#define AV_BUFFER_FLAG_READONLY (1 << 0)
+
+/**
+ * Create an AVBuffer from an existing array.
+ *
+ * If this function is successful, data is owned by the AVBuffer. The caller may
+ * only access data through the returned AVBufferRef and references derived from
+ * it.
+ * If this function fails, data is left untouched.
+ * @param data   data array
+ * @param size   size of data in bytes
+ * @param free   a callback for freeing this buffer's data
+ * @param opaque parameter to be got for processing or passed to free
+ * @param flags  a combination of AV_BUFFER_FLAG_*
+ *
+ * @return an AVBufferRef referring to data on success, NULL on failure.
+ */
+AVBufferRef *av_buffer_create(uint8_t *data, int size,
+                              void (*free)(void *opaque, uint8_t *data),
+                              void *opaque, int flags);
+
+/**
+ * Default free callback, which calls av_free() on the buffer data.
+ * This function is meant to be passed to av_buffer_create(), not called
+ * directly.
+ */
+void av_buffer_default_free(void *opaque, uint8_t *data);
+
+/**
+ * Create a new reference to an AVBuffer.
+ *
+ * @return a new AVBufferRef referring to the same AVBuffer as buf or NULL on
+ * failure.
+ */
+AVBufferRef *av_buffer_ref(AVBufferRef *buf);
+
+/**
+ * Free a given reference and automatically free the buffer if there are no more
+ * references to it.
+ *
+ * @param buf the reference to be freed. The pointer is set to NULL on return.
+ */
+void av_buffer_unref(AVBufferRef **buf);
+
+/**
+ * @return 1 if the caller may write to the data referred to by buf (which is
+ * true if and only if buf is the only reference to the underlying AVBuffer).
+ * Return 0 otherwise.
+ * A positive answer is valid until av_buffer_ref() is called on buf.
+ */
+int av_buffer_is_writable(const AVBufferRef *buf);
+
+/**
+ * @return the opaque parameter set by av_buffer_create.
+ */
+void *av_buffer_get_opaque(const AVBufferRef *buf);
+
+int av_buffer_get_ref_count(const AVBufferRef *buf);
+
+/**
+ * Create a writable reference from a given buffer reference, avoiding data copy
+ * if possible.
+ *
+ * @param buf buffer reference to make writable. On success, buf is either left
+ *            untouched, or it is unreferenced and a new writable AVBufferRef is
+ *            written in its place. On failure, buf is left untouched.
+ * @return 0 on success, a negative AVERROR on failure.
+ */
+int av_buffer_make_writable(AVBufferRef **buf);
+
+/**
+ * Reallocate a given buffer.
+ *
+ * @param buf  a buffer reference to reallocate. On success, buf will be
+ *             unreferenced and a new reference with the required size will be
+ *             written in its place. On failure buf will be left untouched. *buf
+ *             may be NULL, then a new buffer is allocated.
+ * @param size required new buffer size.
+ * @return 0 on success, a negative AVERROR on failure.
+ *
+ * @note the buffer is actually reallocated with av_realloc() only if it was
+ * initially allocated through av_buffer_realloc(NULL) and there is only one
+ * reference to it (i.e. the one passed to this function). In all other cases
+ * a new buffer is allocated and the data is copied.
+ */
+int av_buffer_realloc(AVBufferRef **buf, int size);
+
+/**
+ * @}
+ */
+
+/**
+ * @defgroup lavu_bufferpool AVBufferPool
+ * @ingroup lavu_data
+ *
+ * @{
+ * AVBufferPool is an API for a lock-free thread-safe pool of AVBuffers.
+ *
+ * Frequently allocating and freeing large buffers may be slow. AVBufferPool is
+ * meant to solve this in cases when the caller needs a set of buffers of the
+ * same size (the most obvious use case being buffers for raw video or audio
+ * frames).
+ *
+ * At the beginning, the user must call av_buffer_pool_init() to create the
+ * buffer pool. Then whenever a buffer is needed, call av_buffer_pool_get() to
+ * get a reference to a new buffer, similar to av_buffer_alloc(). This new
+ * reference works in all aspects the same way as the one created by
+ * av_buffer_alloc(). However, when the last reference to this buffer is
+ * unreferenced, it is returned to the pool instead of being freed and will be
+ * reused for subsequent av_buffer_pool_get() calls.
+ *
+ * When the caller is done with the pool and no longer needs to allocate any new
+ * buffers, av_buffer_pool_uninit() must be called to mark the pool as freeable.
+ * Once all the buffers are released, it will automatically be freed.
+ *
+ * Allocating and releasing buffers with this API is thread-safe as long as
+ * either the default alloc callback is used, or the user-supplied one is
+ * thread-safe.
+ */
+
+/**
+ * The buffer pool. This structure is opaque and not meant to be accessed
+ * directly. It is allocated with av_buffer_pool_init() and freed with
+ * av_buffer_pool_uninit().
+ */
+typedef struct AVBufferPool AVBufferPool;
+
+/**
+ * Allocate and initialize a buffer pool.
+ *
+ * @param size size of each buffer in this pool
+ * @param alloc a function that will be used to allocate new buffers when the
+ * pool is empty. May be NULL, then the default allocator will be used
+ * (av_buffer_alloc()).
+ * @return newly created buffer pool on success, NULL on error.
+ */
+AVBufferPool *av_buffer_pool_init(int size, AVBufferRef* (*alloc)(int size));
+
+/**
+ * Allocate and initialize a buffer pool with a more complex allocator.
+ *
+ * @param size size of each buffer in this pool
+ * @param opaque arbitrary user data used by the allocator
+ * @param alloc a function that will be used to allocate new buffers when the
+ *              pool is empty.
+ * @param pool_free a function that will be called immediately before the pool
+ *                  is freed. I.e. after av_buffer_pool_uninit() is called
+ *                  by the caller and all the frames are returned to the pool
+ *                  and freed. It is intended to uninitialize the user opaque
+ *                  data.
+ * @return newly created buffer pool on success, NULL on error.
+ */
+AVBufferPool *av_buffer_pool_init2(int size, void *opaque,
+                                   AVBufferRef* (*alloc)(void *opaque, int size),
+                                   void (*pool_free)(void *opaque));
+
+/**
+ * Mark the pool as being available for freeing. It will actually be freed only
+ * once all the allocated buffers associated with the pool are released. Thus it
+ * is safe to call this function while some of the allocated buffers are still
+ * in use.
+ *
+ * @param pool pointer to the pool to be freed. It will be set to NULL.
+ */
+void av_buffer_pool_uninit(AVBufferPool **pool);
+
+/**
+ * Allocate a new AVBuffer, reusing an old buffer from the pool when available.
+ * This function may be called simultaneously from multiple threads.
+ *
+ * @return a reference to the new buffer on success, NULL on error.
+ */
+AVBufferRef *av_buffer_pool_get(AVBufferPool *pool);
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_BUFFER_H */
diff --git a/media/ffvpx/libavutil/buffer_internal.h b/media/ffvpx/libavutil/buffer_internal.h
new file mode 100644
index 0000000000..54b67047e5
--- /dev/null
+++ b/media/ffvpx/libavutil/buffer_internal.h
@@ -0,0 +1,98 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_BUFFER_INTERNAL_H
+#define AVUTIL_BUFFER_INTERNAL_H
+
+#include <stdatomic.h>
+#include <stdint.h>
+
+#include "buffer.h"
+#include "thread.h"
+
+/**
+ * The buffer is always treated as read-only.
+ */
+#define BUFFER_FLAG_READONLY      (1 << 0)
+/**
+ * The buffer was av_realloc()ed, so it is reallocatable.
+ */
+#define BUFFER_FLAG_REALLOCATABLE (1 << 1)
+
+struct AVBuffer {
+    uint8_t *data; /**< data described by this buffer */
+    int      size; /**< size of data in bytes */
+
+    /**
+     *  number of existing AVBufferRef instances referring to this buffer
+     */
+    atomic_uint refcount;
+
+    /**
+     * a callback for freeing the data
+     */
+    void (*free)(void *opaque, uint8_t *data);
+
+    /**
+     * an opaque pointer, to be used by the freeing callback
+     */
+    void *opaque;
+
+    /**
+     * A combination of BUFFER_FLAG_*
+     */
+    int flags;
+};
+
+typedef struct BufferPoolEntry {
+    uint8_t *data;
+
+    /*
+     * Backups of the original opaque/free of the AVBuffer corresponding to
+     * data. They will be used to free the buffer when the pool is freed.
+     */
+    void *opaque;
+    void (*free)(void *opaque, uint8_t *data);
+
+    AVBufferPool *pool;
+    struct BufferPoolEntry *next;
+} BufferPoolEntry;
+
+struct AVBufferPool {
+    AVMutex mutex;
+    BufferPoolEntry *pool;
+
+    /*
+     * This is used to track when the pool is to be freed.
+     * The pointer to the pool itself held by the caller is considered to
+     * be one reference. Each buffer requested by the caller increases refcount
+     * by one, returning the buffer to the pool decreases it by one.
+     * refcount reaches zero when the buffer has been uninited AND all the
+     * buffers have been released, then it's safe to free the pool and all
+     * the buffers in it.
+     */
+    atomic_uint refcount;
+
+    int size;
+    void *opaque;
+    AVBufferRef* (*alloc)(int size);
+    AVBufferRef* (*alloc2)(void *opaque, int size);
+    void         (*pool_free)(void *opaque);
+};
+
+#endif /* AVUTIL_BUFFER_INTERNAL_H */
diff --git a/media/ffvpx/libavutil/channel_layout.c b/media/ffvpx/libavutil/channel_layout.c
new file mode 100644
index 0000000000..3bd5ee29b7
--- /dev/null
+++ b/media/ffvpx/libavutil/channel_layout.c
@@ -0,0 +1,287 @@
+/*
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * audio channel layout utility functions
+ */
+
+#include <stdint.h>
+
+#include "avstring.h"
+#include "avutil.h"
+#include "channel_layout.h"
+#include "bprint.h"
+#include "common.h"
+
+struct channel_name {
+    const char *name;
+    const char *description;
+};
+
+static const struct channel_name channel_names[] = {
+     [0] = { "FL",        "front left"            },
+     [1] = { "FR",        "front right"           },
+     [2] = { "FC",        "front center"          },
+     [3] = { "LFE",       "low frequency"         },
+     [4] = { "BL",        "back left"             },
+     [5] = { "BR",        "back right"            },
+     [6] = { "FLC",       "front left-of-center"  },
+     [7] = { "FRC",       "front right-of-center" },
+     [8] = { "BC",        "back center"           },
+     [9] = { "SL",        "side left"             },
+    [10] = { "SR",        "side right"            },
+    [11] = { "TC",        "top center"            },
+    [12] = { "TFL",       "top front left"        },
+    [13] = { "TFC",       "top front center"      },
+    [14] = { "TFR",       "top front right"       },
+    [15] = { "TBL",       "top back left"         },
+    [16] = { "TBC",       "top back center"       },
+    [17] = { "TBR",       "top back right"        },
+    [29] = { "DL",        "downmix left"          },
+    [30] = { "DR",        "downmix right"         },
+    [31] = { "WL",        "wide left"             },
+    [32] = { "WR",        "wide right"            },
+    [33] = { "SDL",       "surround direct left"  },
+    [34] = { "SDR",       "surround direct right" },
+    [35] = { "LFE2",      "low frequency 2"       },
+};
+
+static const char *get_channel_name(int channel_id)
+{
+    if (channel_id < 0 || channel_id >= FF_ARRAY_ELEMS(channel_names))
+        return NULL;
+    return channel_names[channel_id].name;
+}
+
+static const struct {
+    const char *name;
+    int         nb_channels;
+    uint64_t     layout;
+} channel_layout_map[] = {
+    { "mono",        1,  AV_CH_LAYOUT_MONO },
+    { "stereo",      2,  AV_CH_LAYOUT_STEREO },
+    { "2.1",         3,  AV_CH_LAYOUT_2POINT1 },
+    { "3.0",         3,  AV_CH_LAYOUT_SURROUND },
+    { "3.0(back)",   3,  AV_CH_LAYOUT_2_1 },
+    { "4.0",         4,  AV_CH_LAYOUT_4POINT0 },
+    { "quad",        4,  AV_CH_LAYOUT_QUAD },
+    { "quad(side)",  4,  AV_CH_LAYOUT_2_2 },
+    { "3.1",         4,  AV_CH_LAYOUT_3POINT1 },
+    { "5.0",         5,  AV_CH_LAYOUT_5POINT0_BACK },
+    { "5.0(side)",   5,  AV_CH_LAYOUT_5POINT0 },
+    { "4.1",         5,  AV_CH_LAYOUT_4POINT1 },
+    { "5.1",         6,  AV_CH_LAYOUT_5POINT1_BACK },
+    { "5.1(side)",   6,  AV_CH_LAYOUT_5POINT1 },
+    { "6.0",         6,  AV_CH_LAYOUT_6POINT0 },
+    { "6.0(front)",  6,  AV_CH_LAYOUT_6POINT0_FRONT },
+    { "hexagonal",   6,  AV_CH_LAYOUT_HEXAGONAL },
+    { "6.1",         7,  AV_CH_LAYOUT_6POINT1 },
+    { "6.1(back)",   7,  AV_CH_LAYOUT_6POINT1_BACK },
+    { "6.1(front)",  7,  AV_CH_LAYOUT_6POINT1_FRONT },
+    { "7.0",         7,  AV_CH_LAYOUT_7POINT0 },
+    { "7.0(front)",  7,  AV_CH_LAYOUT_7POINT0_FRONT },
+    { "7.1",         8,  AV_CH_LAYOUT_7POINT1 },
+    { "7.1(wide)",   8,  AV_CH_LAYOUT_7POINT1_WIDE_BACK },
+    { "7.1(wide-side)",   8,  AV_CH_LAYOUT_7POINT1_WIDE },
+    { "octagonal",   8,  AV_CH_LAYOUT_OCTAGONAL },
+    { "hexadecagonal", 16, AV_CH_LAYOUT_HEXADECAGONAL },
+    { "downmix",     2,  AV_CH_LAYOUT_STEREO_DOWNMIX, },
+};
+
+static uint64_t get_channel_layout_single(const char *name, int name_len)
+{
+    int i;
+    char *end;
+    int64_t layout;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(channel_layout_map); i++) {
+        if (strlen(channel_layout_map[i].name) == name_len &&
+            !memcmp(channel_layout_map[i].name, name, name_len))
+            return channel_layout_map[i].layout;
+    }
+    for (i = 0; i < FF_ARRAY_ELEMS(channel_names); i++)
+        if (channel_names[i].name &&
+            strlen(channel_names[i].name) == name_len &&
+            !memcmp(channel_names[i].name, name, name_len))
+            return (int64_t)1 << i;
+
+    errno = 0;
+    i = strtol(name, &end, 10);
+
+    if (!errno && (end + 1 - name == name_len && *end  == 'c'))
+        return av_get_default_channel_layout(i);
+
+    errno = 0;
+    layout = strtoll(name, &end, 0);
+    if (!errno && end - name == name_len)
+        return FFMAX(layout, 0);
+    return 0;
+}
+
+uint64_t av_get_channel_layout(const char *name)
+{
+    const char *n, *e;
+    const char *name_end = name + strlen(name);
+    int64_t layout = 0, layout_single;
+
+    for (n = name; n < name_end; n = e + 1) {
+        for (e = n; e < name_end && *e != '+' && *e != '|'; e++);
+        layout_single = get_channel_layout_single(n, e - n);
+        if (!layout_single)
+            return 0;
+        layout |= layout_single;
+    }
+    return layout;
+}
+
+int av_get_extended_channel_layout(const char *name, uint64_t* channel_layout, int* nb_channels)
+{
+    int nb = 0;
+    char *end;
+    uint64_t layout = av_get_channel_layout(name);
+
+    if (layout) {
+        *channel_layout = layout;
+        *nb_channels = av_get_channel_layout_nb_channels(layout);
+        return 0;
+    }
+
+    nb = strtol(name, &end, 10);
+    if (!errno && *end  == 'C' && *(end + 1) == '\0' && nb > 0 && nb < 64) {
+        *channel_layout = 0;
+        *nb_channels = nb;
+        return 0;
+    }
+
+    return AVERROR(EINVAL);
+}
+
+void av_bprint_channel_layout(struct AVBPrint *bp,
+                              int nb_channels, uint64_t channel_layout)
+{
+    int i;
+
+    if (nb_channels <= 0)
+        nb_channels = av_get_channel_layout_nb_channels(channel_layout);
+
+    for (i = 0; i < FF_ARRAY_ELEMS(channel_layout_map); i++)
+        if (nb_channels    == channel_layout_map[i].nb_channels &&
+            channel_layout == channel_layout_map[i].layout) {
+            av_bprintf(bp, "%s", channel_layout_map[i].name);
+            return;
+        }
+
+    av_bprintf(bp, "%d channels", nb_channels);
+    if (channel_layout) {
+        int i, ch;
+        av_bprintf(bp, " (");
+        for (i = 0, ch = 0; i < 64; i++) {
+            if ((channel_layout & (UINT64_C(1) << i))) {
+                const char *name = get_channel_name(i);
+                if (name) {
+                    if (ch > 0)
+                        av_bprintf(bp, "+");
+                    av_bprintf(bp, "%s", name);
+                }
+                ch++;
+            }
+        }
+        av_bprintf(bp, ")");
+    }
+}
+
+void av_get_channel_layout_string(char *buf, int buf_size,
+                                  int nb_channels, uint64_t channel_layout)
+{
+    AVBPrint bp;
+
+    av_bprint_init_for_buffer(&bp, buf, buf_size);
+    av_bprint_channel_layout(&bp, nb_channels, channel_layout);
+}
+
+int av_get_channel_layout_nb_channels(uint64_t channel_layout)
+{
+    return av_popcount64(channel_layout);
+}
+
+int64_t av_get_default_channel_layout(int nb_channels) {
+    int i;
+    for (i = 0; i < FF_ARRAY_ELEMS(channel_layout_map); i++)
+        if (nb_channels == channel_layout_map[i].nb_channels)
+            return channel_layout_map[i].layout;
+    return 0;
+}
+
+int av_get_channel_layout_channel_index(uint64_t channel_layout,
+                                        uint64_t channel)
+{
+    if (!(channel_layout & channel) ||
+        av_get_channel_layout_nb_channels(channel) != 1)
+        return AVERROR(EINVAL);
+    channel_layout &= channel - 1;
+    return av_get_channel_layout_nb_channels(channel_layout);
+}
+
+const char *av_get_channel_name(uint64_t channel)
+{
+    int i;
+    if (av_get_channel_layout_nb_channels(channel) != 1)
+        return NULL;
+    for (i = 0; i < 64; i++)
+        if ((1ULL<<i) & channel)
+            return get_channel_name(i);
+    return NULL;
+}
+
+const char *av_get_channel_description(uint64_t channel)
+{
+    int i;
+    if (av_get_channel_layout_nb_channels(channel) != 1)
+        return NULL;
+    for (i = 0; i < FF_ARRAY_ELEMS(channel_names); i++)
+        if ((1ULL<<i) & channel)
+            return channel_names[i].description;
+    return NULL;
+}
+
+uint64_t av_channel_layout_extract_channel(uint64_t channel_layout, int index)
+{
+    int i;
+
+    if (av_get_channel_layout_nb_channels(channel_layout) <= index)
+        return 0;
+
+    for (i = 0; i < 64; i++) {
+        if ((1ULL << i) & channel_layout && !index--)
+            return 1ULL << i;
+    }
+    return 0;
+}
+
+int av_get_standard_channel_layout(unsigned index, uint64_t *layout,
+                                   const char **name)
+{
+    if (index >= FF_ARRAY_ELEMS(channel_layout_map))
+        return AVERROR_EOF;
+    if (layout) *layout = channel_layout_map[index].layout;
+    if (name)   *name   = channel_layout_map[index].name;
+    return 0;
+}
diff --git a/media/ffvpx/libavutil/channel_layout.h b/media/ffvpx/libavutil/channel_layout.h
new file mode 100644
index 0000000000..50bb8f03c5
--- /dev/null
+++ b/media/ffvpx/libavutil/channel_layout.h
@@ -0,0 +1,232 @@
+/*
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2008 Peter Ross
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_CHANNEL_LAYOUT_H
+#define AVUTIL_CHANNEL_LAYOUT_H
+
+#include <stdint.h>
+
+/**
+ * @file
+ * audio channel layout utility functions
+ */
+
+/**
+ * @addtogroup lavu_audio
+ * @{
+ */
+
+/**
+ * @defgroup channel_masks Audio channel masks
+ *
+ * A channel layout is a 64-bits integer with a bit set for every channel.
+ * The number of bits set must be equal to the number of channels.
+ * The value 0 means that the channel layout is not known.
+ * @note this data structure is not powerful enough to handle channels
+ * combinations that have the same channel multiple times, such as
+ * dual-mono.
+ *
+ * @{
+ */
+#define AV_CH_FRONT_LEFT             0x00000001
+#define AV_CH_FRONT_RIGHT            0x00000002
+#define AV_CH_FRONT_CENTER           0x00000004
+#define AV_CH_LOW_FREQUENCY          0x00000008
+#define AV_CH_BACK_LEFT              0x00000010
+#define AV_CH_BACK_RIGHT             0x00000020
+#define AV_CH_FRONT_LEFT_OF_CENTER   0x00000040
+#define AV_CH_FRONT_RIGHT_OF_CENTER  0x00000080
+#define AV_CH_BACK_CENTER            0x00000100
+#define AV_CH_SIDE_LEFT              0x00000200
+#define AV_CH_SIDE_RIGHT             0x00000400
+#define AV_CH_TOP_CENTER             0x00000800
+#define AV_CH_TOP_FRONT_LEFT         0x00001000
+#define AV_CH_TOP_FRONT_CENTER       0x00002000
+#define AV_CH_TOP_FRONT_RIGHT        0x00004000
+#define AV_CH_TOP_BACK_LEFT          0x00008000
+#define AV_CH_TOP_BACK_CENTER        0x00010000
+#define AV_CH_TOP_BACK_RIGHT         0x00020000
+#define AV_CH_STEREO_LEFT            0x20000000  ///< Stereo downmix.
+#define AV_CH_STEREO_RIGHT           0x40000000  ///< See AV_CH_STEREO_LEFT.
+#define AV_CH_WIDE_LEFT              0x0000000080000000ULL
+#define AV_CH_WIDE_RIGHT             0x0000000100000000ULL
+#define AV_CH_SURROUND_DIRECT_LEFT   0x0000000200000000ULL
+#define AV_CH_SURROUND_DIRECT_RIGHT  0x0000000400000000ULL
+#define AV_CH_LOW_FREQUENCY_2        0x0000000800000000ULL
+
+/** Channel mask value used for AVCodecContext.request_channel_layout
+    to indicate that the user requests the channel order of the decoder output
+    to be the native codec channel order. */
+#define AV_CH_LAYOUT_NATIVE          0x8000000000000000ULL
+
+/**
+ * @}
+ * @defgroup channel_mask_c Audio channel layouts
+ * @{
+ * */
+#define AV_CH_LAYOUT_MONO              (AV_CH_FRONT_CENTER)
+#define AV_CH_LAYOUT_STEREO            (AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT)
+#define AV_CH_LAYOUT_2POINT1           (AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_2_1               (AV_CH_LAYOUT_STEREO|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_SURROUND          (AV_CH_LAYOUT_STEREO|AV_CH_FRONT_CENTER)
+#define AV_CH_LAYOUT_3POINT1           (AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_4POINT0           (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_4POINT1           (AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_2_2               (AV_CH_LAYOUT_STEREO|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
+#define AV_CH_LAYOUT_QUAD              (AV_CH_LAYOUT_STEREO|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_5POINT0           (AV_CH_LAYOUT_SURROUND|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
+#define AV_CH_LAYOUT_5POINT1           (AV_CH_LAYOUT_5POINT0|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_5POINT0_BACK      (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_5POINT1_BACK      (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_6POINT0           (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_6POINT0_FRONT     (AV_CH_LAYOUT_2_2|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
+#define AV_CH_LAYOUT_HEXAGONAL         (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_6POINT1           (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_6POINT1_BACK      (AV_CH_LAYOUT_5POINT1_BACK|AV_CH_BACK_CENTER)
+#define AV_CH_LAYOUT_6POINT1_FRONT     (AV_CH_LAYOUT_6POINT0_FRONT|AV_CH_LOW_FREQUENCY)
+#define AV_CH_LAYOUT_7POINT0           (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_7POINT0_FRONT     (AV_CH_LAYOUT_5POINT0|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
+#define AV_CH_LAYOUT_7POINT1           (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_7POINT1_WIDE      (AV_CH_LAYOUT_5POINT1|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
+#define AV_CH_LAYOUT_7POINT1_WIDE_BACK (AV_CH_LAYOUT_5POINT1_BACK|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
+#define AV_CH_LAYOUT_OCTAGONAL         (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_CENTER|AV_CH_BACK_RIGHT)
+#define AV_CH_LAYOUT_HEXADECAGONAL     (AV_CH_LAYOUT_OCTAGONAL|AV_CH_WIDE_LEFT|AV_CH_WIDE_RIGHT|AV_CH_TOP_BACK_LEFT|AV_CH_TOP_BACK_RIGHT|AV_CH_TOP_BACK_CENTER|AV_CH_TOP_FRONT_CENTER|AV_CH_TOP_FRONT_LEFT|AV_CH_TOP_FRONT_RIGHT)
+#define AV_CH_LAYOUT_STEREO_DOWNMIX    (AV_CH_STEREO_LEFT|AV_CH_STEREO_RIGHT)
+
+enum AVMatrixEncoding {
+    AV_MATRIX_ENCODING_NONE,
+    AV_MATRIX_ENCODING_DOLBY,
+    AV_MATRIX_ENCODING_DPLII,
+    AV_MATRIX_ENCODING_DPLIIX,
+    AV_MATRIX_ENCODING_DPLIIZ,
+    AV_MATRIX_ENCODING_DOLBYEX,
+    AV_MATRIX_ENCODING_DOLBYHEADPHONE,
+    AV_MATRIX_ENCODING_NB
+};
+
+/**
+ * Return a channel layout id that matches name, or 0 if no match is found.
+ *
+ * name can be one or several of the following notations,
+ * separated by '+' or '|':
+ * - the name of an usual channel layout (mono, stereo, 4.0, quad, 5.0,
+ *   5.0(side), 5.1, 5.1(side), 7.1, 7.1(wide), downmix);
+ * - the name of a single channel (FL, FR, FC, LFE, BL, BR, FLC, FRC, BC,
+ *   SL, SR, TC, TFL, TFC, TFR, TBL, TBC, TBR, DL, DR);
+ * - a number of channels, in decimal, followed by 'c', yielding
+ *   the default channel layout for that number of channels (@see
+ *   av_get_default_channel_layout);
+ * - a channel layout mask, in hexadecimal starting with "0x" (see the
+ *   AV_CH_* macros).
+ *
+ * Example: "stereo+FC" = "2c+FC" = "2c+1c" = "0x7"
+ */
+uint64_t av_get_channel_layout(const char *name);
+
+/**
+ * Return a channel layout and the number of channels based on the specified name.
+ *
+ * This function is similar to (@see av_get_channel_layout), but can also parse
+ * unknown channel layout specifications.
+ *
+ * @param[in]  name             channel layout specification string
+ * @param[out] channel_layout   parsed channel layout (0 if unknown)
+ * @param[out] nb_channels      number of channels
+ *
+ * @return 0 on success, AVERROR(EINVAL) if the parsing fails.
+ */
+int av_get_extended_channel_layout(const char *name, uint64_t* channel_layout, int* nb_channels);
+
+/**
+ * Return a description of a channel layout.
+ * If nb_channels is <= 0, it is guessed from the channel_layout.
+ *
+ * @param buf put here the string containing the channel layout
+ * @param buf_size size in bytes of the buffer
+ */
+void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout);
+
+struct AVBPrint;
+/**
+ * Append a description of a channel layout to a bprint buffer.
+ */
+void av_bprint_channel_layout(struct AVBPrint *bp, int nb_channels, uint64_t channel_layout);
+
+/**
+ * Return the number of channels in the channel layout.
+ */
+int av_get_channel_layout_nb_channels(uint64_t channel_layout);
+
+/**
+ * Return default channel layout for a given number of channels.
+ */
+int64_t av_get_default_channel_layout(int nb_channels);
+
+/**
+ * Get the index of a channel in channel_layout.
+ *
+ * @param channel a channel layout describing exactly one channel which must be
+ *                present in channel_layout.
+ *
+ * @return index of channel in channel_layout on success, a negative AVERROR
+ *         on error.
+ */
+int av_get_channel_layout_channel_index(uint64_t channel_layout,
+                                        uint64_t channel);
+
+/**
+ * Get the channel with the given index in channel_layout.
+ */
+uint64_t av_channel_layout_extract_channel(uint64_t channel_layout, int index);
+
+/**
+ * Get the name of a given channel.
+ *
+ * @return channel name on success, NULL on error.
+ */
+const char *av_get_channel_name(uint64_t channel);
+
+/**
+ * Get the description of a given channel.
+ *
+ * @param channel  a channel layout with a single channel
+ * @return  channel description on success, NULL on error
+ */
+const char *av_get_channel_description(uint64_t channel);
+
+/**
+ * Get the value and name of a standard channel layout.
+ *
+ * @param[in]  index   index in an internal list, starting at 0
+ * @param[out] layout  channel layout mask
+ * @param[out] name    name of the layout
+ * @return  0  if the layout exists,
+ *          <0 if index is beyond the limits
+ */
+int av_get_standard_channel_layout(unsigned index, uint64_t *layout,
+                                   const char **name);
+
+/**
+ * @}
+ * @}
+ */
+
+#endif /* AVUTIL_CHANNEL_LAYOUT_H */
diff --git a/media/ffvpx/libavutil/color_utils.c b/media/ffvpx/libavutil/color_utils.c
new file mode 100644
index 0000000000..eb8bc7b5fc
--- /dev/null
+++ b/media/ffvpx/libavutil/color_utils.c
@@ -0,0 +1,235 @@
+/*
+ * Copyright (c) 2015 Kevin Wheatley <kevin.j.wheatley@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stddef.h>
+#include <math.h>
+
+#include "common.h"
+#include "libavutil/color_utils.h"
+#include "libavutil/pixfmt.h"
+
+double avpriv_get_gamma_from_trc(enum AVColorTransferCharacteristic trc)
+{
+    double gamma;
+    switch (trc) {
+        case AVCOL_TRC_BT709:
+        case AVCOL_TRC_SMPTE170M:
+        case AVCOL_TRC_SMPTE240M:
+        case AVCOL_TRC_BT1361_ECG:
+        case AVCOL_TRC_BT2020_10:
+        case AVCOL_TRC_BT2020_12:
+            /* these share a segmented TRC, but gamma 1.961 is a close
+              approximation, and also more correct for decoding content */
+            gamma = 1.961;
+            break;
+        case AVCOL_TRC_GAMMA22:
+        case AVCOL_TRC_IEC61966_2_1:
+            gamma = 2.2;
+            break;
+        case AVCOL_TRC_GAMMA28:
+            gamma = 2.8;
+            break;
+        case AVCOL_TRC_LINEAR:
+            gamma = 1.0;
+            break;
+        default:
+            gamma = 0.0; // Unknown value representation
+    }
+    return gamma;
+}
+
+#define BT709_alpha 1.099296826809442
+#define BT709_beta 0.018053968510807
+
+static double avpriv_trc_bt709(double Lc)
+{
+    const double a = BT709_alpha;
+    const double b = BT709_beta;
+
+    return (0.0 > Lc) ? 0.0
+         : (  b > Lc) ? 4.500 * Lc
+         :              a * pow(Lc, 0.45) - (a - 1.0);
+}
+
+static double avpriv_trc_gamma22(double Lc)
+{
+    return (0.0 > Lc) ? 0.0 : pow(Lc, 1.0/ 2.2);
+}
+
+static double avpriv_trc_gamma28(double Lc)
+{
+    return (0.0 > Lc) ? 0.0 : pow(Lc, 1.0/ 2.8);
+}
+
+static double avpriv_trc_smpte240M(double Lc)
+{
+    const double a = 1.1115;
+    const double b = 0.0228;
+
+    return (0.0 > Lc) ? 0.0
+         : (  b > Lc) ? 4.000 * Lc
+         :              a * pow(Lc, 0.45) - (a - 1.0);
+}
+
+static double avpriv_trc_linear(double Lc)
+{
+    return Lc;
+}
+
+static double avpriv_trc_log(double Lc)
+{
+    return (0.01 > Lc) ? 0.0 : 1.0 + log10(Lc) / 2.0;
+}
+
+static double avpriv_trc_log_sqrt(double Lc)
+{
+    // sqrt(10) / 1000
+    return (0.00316227766 > Lc) ? 0.0 : 1.0 + log10(Lc) / 2.5;
+}
+
+static double avpriv_trc_iec61966_2_4(double Lc)
+{
+    const double a = BT709_alpha;
+    const double b = BT709_beta;
+
+    return (-b >= Lc) ? -a * pow(-Lc, 0.45) + (a - 1.0)
+         : ( b >  Lc) ? 4.500 * Lc
+         :               a * pow( Lc, 0.45) - (a - 1.0);
+}
+
+static double avpriv_trc_bt1361(double Lc)
+{
+    const double a = BT709_alpha;
+    const double b = BT709_beta;
+
+    return (-0.0045 >= Lc) ? -(a * pow(-4.0 * Lc, 0.45) + (a - 1.0)) / 4.0
+         : ( b >  Lc) ? 4.500 * Lc
+         :               a * pow( Lc, 0.45) - (a - 1.0);
+}
+
+static double avpriv_trc_iec61966_2_1(double Lc)
+{
+    const double a = 1.055;
+    const double b = 0.0031308;
+
+    return (0.0 > Lc) ? 0.0
+         : (  b > Lc) ? 12.92 * Lc
+         :              a * pow(Lc, 1.0  / 2.4) - (a - 1.0);
+}
+
+static double avpriv_trc_smpte_st2084(double Lc)
+{
+    const double c1 =         3424.0 / 4096.0; // c3-c2 + 1
+    const double c2 =  32.0 * 2413.0 / 4096.0;
+    const double c3 =  32.0 * 2392.0 / 4096.0;
+    const double m  = 128.0 * 2523.0 / 4096.0;
+    const double n  =  0.25 * 2610.0 / 4096.0;
+    const double L  = Lc / 10000.0;
+    const double Ln = pow(L, n);
+
+    return (0.0 > Lc) ? 0.0
+         :              pow((c1 + c2 * Ln) / (1.0 + c3 * Ln), m);
+
+}
+
+static double avpriv_trc_smpte_st428_1(double Lc)
+{
+    return (0.0 > Lc) ? 0.0
+         :              pow(48.0 * Lc / 52.37, 1.0 / 2.6);
+}
+
+
+static double avpriv_trc_arib_std_b67(double Lc) {
+    // The function uses the definition from HEVC, which assumes that the peak
+    // white is input level = 1. (this is equivalent to scaling E = Lc * 12 and
+    // using the definition from the ARIB STD-B67 spec)
+    const double a = 0.17883277;
+    const double b = 0.28466892;
+    const double c = 0.55991073;
+    return (0.0 > Lc) ? 0.0 :
+        (Lc <= 1.0 / 12.0 ? sqrt(3.0 * Lc) : a * log(12.0 * Lc - b) + c);
+}
+
+avpriv_trc_function avpriv_get_trc_function_from_trc(enum AVColorTransferCharacteristic trc)
+{
+    avpriv_trc_function func = NULL;
+    switch (trc) {
+        case AVCOL_TRC_BT709:
+        case AVCOL_TRC_SMPTE170M:
+        case AVCOL_TRC_BT2020_10:
+        case AVCOL_TRC_BT2020_12:
+            func = avpriv_trc_bt709;
+            break;
+
+        case AVCOL_TRC_GAMMA22:
+            func = avpriv_trc_gamma22;
+            break;
+        case AVCOL_TRC_GAMMA28:
+            func = avpriv_trc_gamma28;
+            break;
+
+        case AVCOL_TRC_SMPTE240M:
+            func = avpriv_trc_smpte240M;
+            break;
+
+        case AVCOL_TRC_LINEAR:
+            func = avpriv_trc_linear;
+            break;
+
+        case AVCOL_TRC_LOG:
+            func = avpriv_trc_log;
+            break;
+
+        case AVCOL_TRC_LOG_SQRT:
+            func = avpriv_trc_log_sqrt;
+            break;
+
+        case AVCOL_TRC_IEC61966_2_4:
+            func = avpriv_trc_iec61966_2_4;
+            break;
+
+        case AVCOL_TRC_BT1361_ECG:
+            func = avpriv_trc_bt1361;
+            break;
+
+        case AVCOL_TRC_IEC61966_2_1:
+            func = avpriv_trc_iec61966_2_1;
+            break;
+
+        case AVCOL_TRC_SMPTEST2084:
+            func = avpriv_trc_smpte_st2084;
+            break;
+
+        case AVCOL_TRC_SMPTEST428_1:
+            func = avpriv_trc_smpte_st428_1;
+            break;
+
+        case AVCOL_TRC_ARIB_STD_B67:
+            func = avpriv_trc_arib_std_b67;
+            break;
+
+        case AVCOL_TRC_RESERVED0:
+        case AVCOL_TRC_UNSPECIFIED:
+        case AVCOL_TRC_RESERVED:
+        default:
+            break;
+    }
+    return func;
+}
diff --git a/media/ffvpx/libavutil/color_utils.h b/media/ffvpx/libavutil/color_utils.h
new file mode 100644
index 0000000000..9529006452
--- /dev/null
+++ b/media/ffvpx/libavutil/color_utils.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2015 Kevin Wheatley <kevin.j.wheatley@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_COLOR_UTILS_H
+#define AVUTIL_COLOR_UTILS_H
+
+
+#include "libavutil/pixfmt.h"
+
+/**
+ * Determine a suitable 'gamma' value to match the supplied
+ * AVColorTransferCharacteristic.
+ *
+ * See Apple Technical Note TN2257 (https://developer.apple.com/library/mac/technotes/tn2257/_index.html)
+ *
+ * @return Will return an approximation to the simple gamma function matching
+ *         the supplied Transfer Characteristic, Will return 0.0 for any
+ *         we cannot reasonably match against.
+ */
+double avpriv_get_gamma_from_trc(enum AVColorTransferCharacteristic trc);
+
+
+typedef double (*avpriv_trc_function)(double);
+
+/**
+ * Determine the function needed to apply the given
+ * AVColorTransferCharacteristic to linear input.
+ *
+ * The function returned should expect a nominal domain and range of [0.0-1.0]
+ * values outside of this range maybe valid depending on the chosen
+ * characteristic function.
+ *
+ * @return Will return pointer to the function matching the
+ *         supplied Transfer Characteristic. If unspecified will
+ *         return NULL:
+ */
+avpriv_trc_function avpriv_get_trc_function_from_trc(enum AVColorTransferCharacteristic trc);
+
+#endif
diff --git a/media/ffvpx/libavutil/colorspace.h b/media/ffvpx/libavutil/colorspace.h
new file mode 100644
index 0000000000..ef6f6107d6
--- /dev/null
+++ b/media/ffvpx/libavutil/colorspace.h
@@ -0,0 +1,150 @@
+/*
+ * Colorspace conversion defines
+ * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Various defines for YUV<->RGB conversion
+ */
+
+#ifndef AVUTIL_COLORSPACE_H
+#define AVUTIL_COLORSPACE_H
+
+#define SCALEBITS 10
+#define ONE_HALF  (1 << (SCALEBITS - 1))
+#define FIX(x)    ((int) ((x) * (1<<SCALEBITS) + 0.5))
+
+#define YUV_TO_RGB1_CCIR(cb1, cr1)\
+{\
+    cb = (cb1) - 128;\
+    cr = (cr1) - 128;\
+    r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
+    g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
+            ONE_HALF;\
+    b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
+}
+
+#define YUV_TO_RGB1_CCIR_BT709(cb1, cr1)                      \
+    {                                                         \
+        cb    = (cb1) - 128;                                  \
+        cr    = (cr1) - 128;                                  \
+        r_add = ONE_HALF + FIX(1.5747 * 255.0 / 224.0) * cr;  \
+        g_add = ONE_HALF - FIX(0.1873 * 255.0 / 224.0) * cb - \
+                           FIX(0.4682 * 255.0 / 224.0) * cr;  \
+        b_add = ONE_HALF + FIX(1.8556 * 255.0 / 224.0) * cb;  \
+    }
+
+// To be used for the BT709 variant as well
+#define YUV_TO_RGB2_CCIR(r, g, b, y1)\
+{\
+    y = ((y1) - 16) * FIX(255.0/219.0);\
+    r = cm[(y + r_add) >> SCALEBITS];\
+    g = cm[(y + g_add) >> SCALEBITS];\
+    b = cm[(y + b_add) >> SCALEBITS];\
+}
+
+#define YUV_TO_RGB1(cb1, cr1)\
+{\
+    cb = (cb1) - 128;\
+    cr = (cr1) - 128;\
+    r_add = FIX(1.40200) * cr + ONE_HALF;\
+    g_add = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF;\
+    b_add = FIX(1.77200) * cb + ONE_HALF;\
+}
+
+#define YUV_TO_RGB2(r, g, b, y1)\
+{\
+    y = (y1) << SCALEBITS;\
+    r = cm[(y + r_add) >> SCALEBITS];\
+    g = cm[(y + g_add) >> SCALEBITS];\
+    b = cm[(y + b_add) >> SCALEBITS];\
+}
+
+#define Y_CCIR_TO_JPEG(y)\
+ cm[((y) * FIX(255.0/219.0) + (ONE_HALF - 16 * FIX(255.0/219.0))) >> SCALEBITS]
+
+#define Y_JPEG_TO_CCIR(y)\
+ (((y) * FIX(219.0/255.0) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
+
+#define C_CCIR_TO_JPEG(y)\
+ cm[(((y) - 128) * FIX(127.0/112.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS]
+
+/* NOTE: the clamp is really necessary! */
+static inline int C_JPEG_TO_CCIR(int y) {
+    y = (((y - 128) * FIX(112.0/127.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS);
+    if (y < 16)
+        y = 16;
+    return y;
+}
+
+
+#define RGB_TO_Y_CCIR(r, g, b) \
+((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
+  FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
+
+#define RGB_TO_U_CCIR(r1, g1, b1, shift)\
+(((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 +         \
+     FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
+
+#define RGB_TO_V_CCIR(r1, g1, b1, shift)\
+(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 -           \
+   FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
+
+#define RGB_TO_Y_JPEG(r, g, b) \
+(FFMIN((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
+  FIX(0.11400) * (b) + (ONE_HALF)) >> SCALEBITS, 255))
+
+#define RGB_TO_U_JPEG(r1, g1, b1)\
+(((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
+     FIX(0.50000) * b1 + (ONE_HALF) - 1) >> (SCALEBITS)) + 128)
+
+#define RGB_TO_V_JPEG(r1, g1, b1)\
+(((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
+   FIX(0.08131) * b1 + (ONE_HALF) - 1) >> (SCALEBITS)) + 128)
+
+// Conversion macros for 8-bit RGB to YUV
+// Derived from ITU-R BT.709-6 (06/2015) Item 3.5
+// https://www.itu.int/rec/R-REC-BT.709-6-201506-I/en
+
+#define RGB_TO_Y_BT709(r, g, b) \
+((FIX(0.21260*219.0/255.0) * (r) + FIX(0.71520*219.0/255.0) * (g) + \
+  FIX(0.07220*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
+
+#define RGB_TO_U_BT709(r1, g1, b1, shift)\
+(((- FIX(0.11457*224.0/255.0) * r1 - FIX(0.38543*224.0/255.0) * g1 +         \
+     FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
+
+#define RGB_TO_V_BT709(r1, g1, b1, shift)\
+(((FIX(0.50000*224.0/255.0) * r1 - FIX(0.45415*224.0/255.0) * g1 -           \
+   FIX(0.04585*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
+
+#define RGB_TO_Y_BT709_FULL(r, g, b) \
+(FFMIN((FIX(0.21260) * (r) + FIX(0.71520) * (g) + \
+  FIX(0.07220) * (b) + (ONE_HALF)) >> SCALEBITS, 255))
+
+#define RGB_TO_U_BT709_FULL(r1, g1, b1)\
+(((- FIX(0.11457) * r1 - FIX(0.38543) * g1 + \
+     FIX(0.50000) * b1 + (ONE_HALF) - 1) >> (SCALEBITS)) + 128)
+
+#define RGB_TO_V_BT709_FULL(r1, g1, b1)\
+(((FIX(0.50000) * r1 - FIX(0.45415) * g1 - \
+   FIX(0.04585) * b1 + (ONE_HALF) - 1) >> (SCALEBITS)) + 128)
+
+#endif /* AVUTIL_COLORSPACE_H */
diff --git a/media/ffvpx/libavutil/common.h b/media/ffvpx/libavutil/common.h
new file mode 100644
index 0000000000..8db0291170
--- /dev/null
+++ b/media/ffvpx/libavutil/common.h
@@ -0,0 +1,560 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * common internal and external API header
+ */
+
+#ifndef AVUTIL_COMMON_H
+#define AVUTIL_COMMON_H
+
+#if defined(__cplusplus) && !defined(__STDC_CONSTANT_MACROS) && !defined(UINT64_C)
+#error missing -D__STDC_CONSTANT_MACROS / #define __STDC_CONSTANT_MACROS
+#endif
+
+#include <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <math.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "attributes.h"
+#include "macros.h"
+#include "version.h"
+#include "libavutil/avconfig.h"
+
+#if AV_HAVE_BIGENDIAN
+#   define AV_NE(be, le) (be)
+#else
+#   define AV_NE(be, le) (le)
+#endif
+
+//rounded division & shift
+#define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))
+/* assume b>0 */
+#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
+/* Fast a/(1<<b) rounded toward +inf. Assume a>=0 and b>=0 */
+#define AV_CEIL_RSHIFT(a,b) (!av_builtin_constant_p(b) ? -((-(a)) >> (b)) \
+                                                       : ((a) + (1<<(b)) - 1) >> (b))
+/* Backwards compat. */
+#define FF_CEIL_RSHIFT AV_CEIL_RSHIFT
+
+#define FFUDIV(a,b) (((a)>0 ?(a):(a)-(b)+1) / (b))
+#define FFUMOD(a,b) ((a)-(b)*FFUDIV(a,b))
+
+/**
+ * Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they
+ * are not representable as absolute values of their type. This is the same
+ * as with *abs()
+ * @see FFNABS()
+ */
+#define FFABS(a) ((a) >= 0 ? (a) : (-(a)))
+#define FFSIGN(a) ((a) > 0 ? 1 : -1)
+
+/**
+ * Negative Absolute value.
+ * this works for all integers of all types.
+ * As with many macros, this evaluates its argument twice, it thus must not have
+ * a sideeffect, that is FFNABS(x++) has undefined behavior.
+ */
+#define FFNABS(a) ((a) <= 0 ? (a) : (-(a)))
+
+/**
+ * Comparator.
+ * For two numerical expressions x and y, gives 1 if x > y, -1 if x < y, and 0
+ * if x == y. This is useful for instance in a qsort comparator callback.
+ * Furthermore, compilers are able to optimize this to branchless code, and
+ * there is no risk of overflow with signed types.
+ * As with many macros, this evaluates its argument multiple times, it thus
+ * must not have a side-effect.
+ */
+#define FFDIFFSIGN(x,y) (((x)>(y)) - ((x)<(y)))
+
+#define FFMAX(a,b) ((a) > (b) ? (a) : (b))
+#define FFMAX3(a,b,c) FFMAX(FFMAX(a,b),c)
+#define FFMIN(a,b) ((a) > (b) ? (b) : (a))
+#define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c)
+
+#define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)
+#define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
+
+/* misc math functions */
+
+#ifdef HAVE_AV_CONFIG_H
+#   include "config.h"
+#   include "intmath.h"
+#endif
+
+/* Pull in unguarded fallback defines at the end of this file. */
+#include "common.h"
+
+#ifndef av_log2
+av_const int av_log2(unsigned v);
+#endif
+
+#ifndef av_log2_16bit
+av_const int av_log2_16bit(unsigned v);
+#endif
+
+/**
+ * Clip a signed integer value into the amin-amax range.
+ * @param a value to clip
+ * @param amin minimum value of the clip range
+ * @param amax maximum value of the clip range
+ * @return clipped value
+ */
+static av_always_inline av_const int av_clip_c(int a, int amin, int amax)
+{
+#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2
+    if (amin > amax) abort();
+#endif
+    if      (a < amin) return amin;
+    else if (a > amax) return amax;
+    else               return a;
+}
+
+/**
+ * Clip a signed 64bit integer value into the amin-amax range.
+ * @param a value to clip
+ * @param amin minimum value of the clip range
+ * @param amax maximum value of the clip range
+ * @return clipped value
+ */
+static av_always_inline av_const int64_t av_clip64_c(int64_t a, int64_t amin, int64_t amax)
+{
+#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2
+    if (amin > amax) abort();
+#endif
+    if      (a < amin) return amin;
+    else if (a > amax) return amax;
+    else               return a;
+}
+
+/**
+ * Clip a signed integer value into the 0-255 range.
+ * @param a value to clip
+ * @return clipped value
+ */
+static av_always_inline av_const uint8_t av_clip_uint8_c(int a)
+{
+    if (a&(~0xFF)) return (~a)>>31;
+    else           return a;
+}
+
+/**
+ * Clip a signed integer value into the -128,127 range.
+ * @param a value to clip
+ * @return clipped value
+ */
+static av_always_inline av_const int8_t av_clip_int8_c(int a)
+{
+    if ((a+0x80U) & ~0xFF) return (a>>31) ^ 0x7F;
+    else                  return a;
+}
+
+/**
+ * Clip a signed integer value into the 0-65535 range.
+ * @param a value to clip
+ * @return clipped value
+ */
+static av_always_inline av_const uint16_t av_clip_uint16_c(int a)
+{
+    if (a&(~0xFFFF)) return (~a)>>31;
+    else             return a;
+}
+
+/**
+ * Clip a signed integer value into the -32768,32767 range.
+ * @param a value to clip
+ * @return clipped value
+ */
+static av_always_inline av_const int16_t av_clip_int16_c(int a)
+{
+    if ((a+0x8000U) & ~0xFFFF) return (a>>31) ^ 0x7FFF;
+    else                      return a;
+}
+
+/**
+ * Clip a signed 64-bit integer value into the -2147483648,2147483647 range.
+ * @param a value to clip
+ * @return clipped value
+ */
+static av_always_inline av_const int32_t av_clipl_int32_c(int64_t a)
+{
+    if ((a+0x80000000u) & ~UINT64_C(0xFFFFFFFF)) return (int32_t)((a>>63) ^ 0x7FFFFFFF);
+    else                                         return (int32_t)a;
+}
+
+/**
+ * Clip a signed integer into the -(2^p),(2^p-1) range.
+ * @param  a value to clip
+ * @param  p bit position to clip at
+ * @return clipped value
+ */
+static av_always_inline av_const int av_clip_intp2_c(int a, int p)
+{
+    if (((unsigned)a + (1 << p)) & ~((2 << p) - 1))
+        return (a >> 31) ^ ((1 << p) - 1);
+    else
+        return a;
+}
+
+/**
+ * Clip a signed integer to an unsigned power of two range.
+ * @param  a value to clip
+ * @param  p bit position to clip at
+ * @return clipped value
+ */
+static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
+{
+    if (a & ~((1<<p) - 1)) return (~a) >> 31 & ((1<<p) - 1);
+    else                   return  a;
+}
+
+/**
+ * Clear high bits from an unsigned integer starting with specific bit position
+ * @param  a value to clip
+ * @param  p bit position to clip at
+ * @return clipped value
+ */
+static av_always_inline av_const unsigned av_mod_uintp2_c(unsigned a, unsigned p)
+{
+    return a & ((1 << p) - 1);
+}
+
+/**
+ * Add two signed 32-bit values with saturation.
+ *
+ * @param  a one value
+ * @param  b another value
+ * @return sum with signed saturation
+ */
+static av_always_inline int av_sat_add32_c(int a, int b)
+{
+    return av_clipl_int32((int64_t)a + b);
+}
+
+/**
+ * Add a doubled value to another value with saturation at both stages.
+ *
+ * @param  a first value
+ * @param  b value doubled and added to a
+ * @return sum sat(a + sat(2*b)) with signed saturation
+ */
+static av_always_inline int av_sat_dadd32_c(int a, int b)
+{
+    return av_sat_add32(a, av_sat_add32(b, b));
+}
+
+/**
+ * Subtract two signed 32-bit values with saturation.
+ *
+ * @param  a one value
+ * @param  b another value
+ * @return difference with signed saturation
+ */
+static av_always_inline int av_sat_sub32_c(int a, int b)
+{
+    return av_clipl_int32((int64_t)a - b);
+}
+
+/**
+ * Subtract a doubled value from another value with saturation at both stages.
+ *
+ * @param  a first value
+ * @param  b value doubled and subtracted from a
+ * @return difference sat(a - sat(2*b)) with signed saturation
+ */
+static av_always_inline int av_sat_dsub32_c(int a, int b)
+{
+    return av_sat_sub32(a, av_sat_add32(b, b));
+}
+
+/**
+ * Clip a float value into the amin-amax range.
+ * @param a value to clip
+ * @param amin minimum value of the clip range
+ * @param amax maximum value of the clip range
+ * @return clipped value
+ */
+static av_always_inline av_const float av_clipf_c(float a, float amin, float amax)
+{
+#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2
+    if (amin > amax) abort();
+#endif
+    if      (a < amin) return amin;
+    else if (a > amax) return amax;
+    else               return a;
+}
+
+/**
+ * Clip a double value into the amin-amax range.
+ * @param a value to clip
+ * @param amin minimum value of the clip range
+ * @param amax maximum value of the clip range
+ * @return clipped value
+ */
+static av_always_inline av_const double av_clipd_c(double a, double amin, double amax)
+{
+#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2
+    if (amin > amax) abort();
+#endif
+    if      (a < amin) return amin;
+    else if (a > amax) return amax;
+    else               return a;
+}
+
+/** Compute ceil(log2(x)).
+ * @param x value used to compute ceil(log2(x))
+ * @return computed ceiling of log2(x)
+ */
+static av_always_inline av_const int av_ceil_log2_c(int x)
+{
+    return av_log2((x - 1) << 1);
+}
+
+/**
+ * Count number of bits set to one in x
+ * @param x value to count bits of
+ * @return the number of bits set to one in x
+ */
+static av_always_inline av_const int av_popcount_c(uint32_t x)
+{
+    x -= (x >> 1) & 0x55555555;
+    x = (x & 0x33333333) + ((x >> 2) & 0x33333333);
+    x = (x + (x >> 4)) & 0x0F0F0F0F;
+    x += x >> 8;
+    return (x + (x >> 16)) & 0x3F;
+}
+
+/**
+ * Count number of bits set to one in x
+ * @param x value to count bits of
+ * @return the number of bits set to one in x
+ */
+static av_always_inline av_const int av_popcount64_c(uint64_t x)
+{
+    return av_popcount((uint32_t)x) + av_popcount((uint32_t)(x >> 32));
+}
+
+static av_always_inline av_const int av_parity_c(uint32_t v)
+{
+    return av_popcount(v) & 1;
+}
+
+#define MKTAG(a,b,c,d) ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))
+#define MKBETAG(a,b,c,d) ((d) | ((c) << 8) | ((b) << 16) | ((unsigned)(a) << 24))
+
+/**
+ * Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.
+ *
+ * @param val      Output value, must be an lvalue of type uint32_t.
+ * @param GET_BYTE Expression reading one byte from the input.
+ *                 Evaluated up to 7 times (4 for the currently
+ *                 assigned Unicode range).  With a memory buffer
+ *                 input, this could be *ptr++.
+ * @param ERROR    Expression to be evaluated on invalid input,
+ *                 typically a goto statement.
+ *
+ * @warning ERROR should not contain a loop control statement which
+ * could interact with the internal while loop, and should force an
+ * exit from the macro code (e.g. through a goto or a return) in order
+ * to prevent undefined results.
+ */
+#define GET_UTF8(val, GET_BYTE, ERROR)\
+    val= (GET_BYTE);\
+    {\
+        uint32_t top = (val & 128) >> 1;\
+        if ((val & 0xc0) == 0x80 || val >= 0xFE)\
+            ERROR\
+        while (val & top) {\
+            int tmp= (GET_BYTE) - 128;\
+            if(tmp>>6)\
+                ERROR\
+            val= (val<<6) + tmp;\
+            top <<= 5;\
+        }\
+        val &= (top << 1) - 1;\
+    }
+
+/**
+ * Convert a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form.
+ *
+ * @param val       Output value, must be an lvalue of type uint32_t.
+ * @param GET_16BIT Expression returning two bytes of UTF-16 data converted
+ *                  to native byte order.  Evaluated one or two times.
+ * @param ERROR     Expression to be evaluated on invalid input,
+ *                  typically a goto statement.
+ */
+#define GET_UTF16(val, GET_16BIT, ERROR)\
+    val = GET_16BIT;\
+    {\
+        unsigned int hi = val - 0xD800;\
+        if (hi < 0x800) {\
+            val = GET_16BIT - 0xDC00;\
+            if (val > 0x3FFU || hi > 0x3FFU)\
+                ERROR\
+            val += (hi<<10) + 0x10000;\
+        }\
+    }\
+
+/**
+ * @def PUT_UTF8(val, tmp, PUT_BYTE)
+ * Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long).
+ * @param val is an input-only argument and should be of type uint32_t. It holds
+ * a UCS-4 encoded Unicode character that is to be converted to UTF-8. If
+ * val is given as a function it is executed only once.
+ * @param tmp is a temporary variable and should be of type uint8_t. It
+ * represents an intermediate value during conversion that is to be
+ * output by PUT_BYTE.
+ * @param PUT_BYTE writes the converted UTF-8 bytes to any proper destination.
+ * It could be a function or a statement, and uses tmp as the input byte.
+ * For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be
+ * executed up to 4 times for values in the valid UTF-8 range and up to
+ * 7 times in the general case, depending on the length of the converted
+ * Unicode character.
+ */
+#define PUT_UTF8(val, tmp, PUT_BYTE)\
+    {\
+        int bytes, shift;\
+        uint32_t in = val;\
+        if (in < 0x80) {\
+            tmp = in;\
+            PUT_BYTE\
+        } else {\
+            bytes = (av_log2(in) + 4) / 5;\
+            shift = (bytes - 1) * 6;\
+            tmp = (256 - (256 >> bytes)) | (in >> shift);\
+            PUT_BYTE\
+            while (shift >= 6) {\
+                shift -= 6;\
+                tmp = 0x80 | ((in >> shift) & 0x3f);\
+                PUT_BYTE\
+            }\
+        }\
+    }
+
+/**
+ * @def PUT_UTF16(val, tmp, PUT_16BIT)
+ * Convert a 32-bit Unicode character to its UTF-16 encoded form (2 or 4 bytes).
+ * @param val is an input-only argument and should be of type uint32_t. It holds
+ * a UCS-4 encoded Unicode character that is to be converted to UTF-16. If
+ * val is given as a function it is executed only once.
+ * @param tmp is a temporary variable and should be of type uint16_t. It
+ * represents an intermediate value during conversion that is to be
+ * output by PUT_16BIT.
+ * @param PUT_16BIT writes the converted UTF-16 data to any proper destination
+ * in desired endianness. It could be a function or a statement, and uses tmp
+ * as the input byte.  For example, PUT_BYTE could be "*output++ = tmp;"
+ * PUT_BYTE will be executed 1 or 2 times depending on input character.
+ */
+#define PUT_UTF16(val, tmp, PUT_16BIT)\
+    {\
+        uint32_t in = val;\
+        if (in < 0x10000) {\
+            tmp = in;\
+            PUT_16BIT\
+        } else {\
+            tmp = 0xD800 | ((in - 0x10000) >> 10);\
+            PUT_16BIT\
+            tmp = 0xDC00 | ((in - 0x10000) & 0x3FF);\
+            PUT_16BIT\
+        }\
+    }\
+
+
+
+#include "mem.h"
+
+#ifdef HAVE_AV_CONFIG_H
+#    include "internal.h"
+#endif /* HAVE_AV_CONFIG_H */
+
+#endif /* AVUTIL_COMMON_H */
+
+/*
+ * The following definitions are outside the multiple inclusion guard
+ * to ensure they are immediately available in intmath.h.
+ */
+
+#ifndef av_ceil_log2
+#   define av_ceil_log2     av_ceil_log2_c
+#endif
+#ifndef av_clip
+#   define av_clip          av_clip_c
+#endif
+#ifndef av_clip64
+#   define av_clip64        av_clip64_c
+#endif
+#ifndef av_clip_uint8
+#   define av_clip_uint8    av_clip_uint8_c
+#endif
+#ifndef av_clip_int8
+#   define av_clip_int8     av_clip_int8_c
+#endif
+#ifndef av_clip_uint16
+#   define av_clip_uint16   av_clip_uint16_c
+#endif
+#ifndef av_clip_int16
+#   define av_clip_int16    av_clip_int16_c
+#endif
+#ifndef av_clipl_int32
+#   define av_clipl_int32   av_clipl_int32_c
+#endif
+#ifndef av_clip_intp2
+#   define av_clip_intp2    av_clip_intp2_c
+#endif
+#ifndef av_clip_uintp2
+#   define av_clip_uintp2   av_clip_uintp2_c
+#endif
+#ifndef av_mod_uintp2
+#   define av_mod_uintp2    av_mod_uintp2_c
+#endif
+#ifndef av_sat_add32
+#   define av_sat_add32     av_sat_add32_c
+#endif
+#ifndef av_sat_dadd32
+#   define av_sat_dadd32    av_sat_dadd32_c
+#endif
+#ifndef av_sat_sub32
+#   define av_sat_sub32     av_sat_sub32_c
+#endif
+#ifndef av_sat_dsub32
+#   define av_sat_dsub32    av_sat_dsub32_c
+#endif
+#ifndef av_clipf
+#   define av_clipf         av_clipf_c
+#endif
+#ifndef av_clipd
+#   define av_clipd         av_clipd_c
+#endif
+#ifndef av_popcount
+#   define av_popcount      av_popcount_c
+#endif
+#ifndef av_popcount64
+#   define av_popcount64    av_popcount64_c
+#endif
+#ifndef av_parity
+#   define av_parity        av_parity_c
+#endif
diff --git a/media/ffvpx/libavutil/cpu.c b/media/ffvpx/libavutil/cpu.c
new file mode 100644
index 0000000000..6548cc3042
--- /dev/null
+++ b/media/ffvpx/libavutil/cpu.c
@@ -0,0 +1,321 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdatomic.h>
+
+#include "attributes.h"
+#include "cpu.h"
+#include "cpu_internal.h"
+#include "config.h"
+#include "opt.h"
+#include "common.h"
+
+#if HAVE_SCHED_GETAFFINITY
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
+#include <sched.h>
+#endif
+#if HAVE_GETPROCESSAFFINITYMASK || HAVE_WINRT
+#include <windows.h>
+#endif
+#if HAVE_SYSCTL
+#if HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+static atomic_int cpu_flags = ATOMIC_VAR_INIT(-1);
+
+static int get_cpu_flags(void)
+{
+    if (ARCH_AARCH64)
+        return ff_get_cpu_flags_aarch64();
+    if (ARCH_ARM)
+        return ff_get_cpu_flags_arm();
+    if (ARCH_PPC)
+        return ff_get_cpu_flags_ppc();
+    if (ARCH_X86)
+        return ff_get_cpu_flags_x86();
+    return 0;
+}
+
+void av_force_cpu_flags(int arg){
+    if (ARCH_X86 &&
+           (arg & ( AV_CPU_FLAG_3DNOW    |
+                    AV_CPU_FLAG_3DNOWEXT |
+                    AV_CPU_FLAG_MMXEXT   |
+                    AV_CPU_FLAG_SSE      |
+                    AV_CPU_FLAG_SSE2     |
+                    AV_CPU_FLAG_SSE2SLOW |
+                    AV_CPU_FLAG_SSE3     |
+                    AV_CPU_FLAG_SSE3SLOW |
+                    AV_CPU_FLAG_SSSE3    |
+                    AV_CPU_FLAG_SSE4     |
+                    AV_CPU_FLAG_SSE42    |
+                    AV_CPU_FLAG_AVX      |
+                    AV_CPU_FLAG_AVXSLOW  |
+                    AV_CPU_FLAG_XOP      |
+                    AV_CPU_FLAG_FMA3     |
+                    AV_CPU_FLAG_FMA4     |
+                    AV_CPU_FLAG_AVX2     |
+                    AV_CPU_FLAG_AVX512   ))
+        && !(arg & AV_CPU_FLAG_MMX)) {
+        av_log(NULL, AV_LOG_WARNING, "MMX implied by specified flags\n");
+        arg |= AV_CPU_FLAG_MMX;
+    }
+
+    atomic_store_explicit(&cpu_flags, arg, memory_order_relaxed);
+}
+
+int av_get_cpu_flags(void)
+{
+    int flags = atomic_load_explicit(&cpu_flags, memory_order_relaxed);
+    if (flags == -1) {
+        flags = get_cpu_flags();
+        atomic_store_explicit(&cpu_flags, flags, memory_order_relaxed);
+    }
+    return flags;
+}
+
+void av_set_cpu_flags_mask(int mask)
+{
+    atomic_store_explicit(&cpu_flags, get_cpu_flags() & mask,
+                          memory_order_relaxed);
+}
+
+int av_parse_cpu_flags(const char *s)
+{
+#define CPUFLAG_MMXEXT   (AV_CPU_FLAG_MMX      | AV_CPU_FLAG_MMXEXT | AV_CPU_FLAG_CMOV)
+#define CPUFLAG_3DNOW    (AV_CPU_FLAG_3DNOW    | AV_CPU_FLAG_MMX)
+#define CPUFLAG_3DNOWEXT (AV_CPU_FLAG_3DNOWEXT | CPUFLAG_3DNOW)
+#define CPUFLAG_SSE      (AV_CPU_FLAG_SSE      | CPUFLAG_MMXEXT)
+#define CPUFLAG_SSE2     (AV_CPU_FLAG_SSE2     | CPUFLAG_SSE)
+#define CPUFLAG_SSE2SLOW (AV_CPU_FLAG_SSE2SLOW | CPUFLAG_SSE2)
+#define CPUFLAG_SSE3     (AV_CPU_FLAG_SSE3     | CPUFLAG_SSE2)
+#define CPUFLAG_SSE3SLOW (AV_CPU_FLAG_SSE3SLOW | CPUFLAG_SSE3)
+#define CPUFLAG_SSSE3    (AV_CPU_FLAG_SSSE3    | CPUFLAG_SSE3)
+#define CPUFLAG_SSE4     (AV_CPU_FLAG_SSE4     | CPUFLAG_SSSE3)
+#define CPUFLAG_SSE42    (AV_CPU_FLAG_SSE42    | CPUFLAG_SSE4)
+#define CPUFLAG_AVX      (AV_CPU_FLAG_AVX      | CPUFLAG_SSE42)
+#define CPUFLAG_AVXSLOW  (AV_CPU_FLAG_AVXSLOW  | CPUFLAG_AVX)
+#define CPUFLAG_XOP      (AV_CPU_FLAG_XOP      | CPUFLAG_AVX)
+#define CPUFLAG_FMA3     (AV_CPU_FLAG_FMA3     | CPUFLAG_AVX)
+#define CPUFLAG_FMA4     (AV_CPU_FLAG_FMA4     | CPUFLAG_AVX)
+#define CPUFLAG_AVX2     (AV_CPU_FLAG_AVX2     | CPUFLAG_AVX)
+#define CPUFLAG_BMI2     (AV_CPU_FLAG_BMI2     | AV_CPU_FLAG_BMI1)
+#define CPUFLAG_AESNI    (AV_CPU_FLAG_AESNI    | CPUFLAG_SSE42)
+#define CPUFLAG_AVX512   (AV_CPU_FLAG_AVX512   | CPUFLAG_AVX2)
+    static const AVOption cpuflags_opts[] = {
+        { "flags"   , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
+#if   ARCH_PPC
+        { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC  },    .unit = "flags" },
+#elif ARCH_X86
+        { "mmx"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX      },    .unit = "flags" },
+        { "mmxext"  , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_MMXEXT       },    .unit = "flags" },
+        { "sse"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE          },    .unit = "flags" },
+        { "sse2"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2         },    .unit = "flags" },
+        { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE2SLOW     },    .unit = "flags" },
+        { "sse3"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3         },    .unit = "flags" },
+        { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE3SLOW     },    .unit = "flags" },
+        { "ssse3"   , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSSE3        },    .unit = "flags" },
+        { "atom"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM     },    .unit = "flags" },
+        { "sse4.1"  , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE4         },    .unit = "flags" },
+        { "sse4.2"  , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_SSE42        },    .unit = "flags" },
+        { "avx"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX          },    .unit = "flags" },
+        { "avxslow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVXSLOW      },    .unit = "flags" },
+        { "xop"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_XOP          },    .unit = "flags" },
+        { "fma3"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_FMA3         },    .unit = "flags" },
+        { "fma4"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_FMA4         },    .unit = "flags" },
+        { "avx2"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX2         },    .unit = "flags" },
+        { "bmi1"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI1     },    .unit = "flags" },
+        { "bmi2"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_BMI2         },    .unit = "flags" },
+        { "3dnow"   , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOW        },    .unit = "flags" },
+        { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_3DNOWEXT     },    .unit = "flags" },
+        { "cmov",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV     },    .unit = "flags" },
+        { "aesni"   , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AESNI        },    .unit = "flags" },
+        { "avx512"  , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPUFLAG_AVX512       },    .unit = "flags" },
+#elif ARCH_ARM
+        { "armv5te",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE  },    .unit = "flags" },
+        { "armv6",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6    },    .unit = "flags" },
+        { "armv6t2",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2  },    .unit = "flags" },
+        { "vfp",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP      },    .unit = "flags" },
+        { "vfp_vm",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP_VM   },    .unit = "flags" },
+        { "vfpv3",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3    },    .unit = "flags" },
+        { "neon",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON     },    .unit = "flags" },
+#elif ARCH_AARCH64
+        { "armv8",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8    },    .unit = "flags" },
+        { "neon",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON     },    .unit = "flags" },
+        { "vfp",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP      },    .unit = "flags" },
+#endif
+        { NULL },
+    };
+    static const AVClass class = {
+        .class_name = "cpuflags",
+        .item_name  = av_default_item_name,
+        .option     = cpuflags_opts,
+        .version    = LIBAVUTIL_VERSION_INT,
+    };
+
+    int flags = 0, ret;
+    const AVClass *pclass = &class;
+
+    if ((ret = av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, &flags)) < 0)
+        return ret;
+
+    return flags & INT_MAX;
+}
+
+int av_parse_cpu_caps(unsigned *flags, const char *s)
+{
+        static const AVOption cpuflags_opts[] = {
+        { "flags"   , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
+#if   ARCH_PPC
+        { "altivec" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ALTIVEC  },    .unit = "flags" },
+#elif ARCH_X86
+        { "mmx"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX      },    .unit = "flags" },
+        { "mmx2"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2     },    .unit = "flags" },
+        { "mmxext"  , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX2     },    .unit = "flags" },
+        { "sse"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE      },    .unit = "flags" },
+        { "sse2"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2     },    .unit = "flags" },
+        { "sse2slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE2SLOW },    .unit = "flags" },
+        { "sse3"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3     },    .unit = "flags" },
+        { "sse3slow", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE3SLOW },    .unit = "flags" },
+        { "ssse3"   , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSSE3    },    .unit = "flags" },
+        { "atom"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ATOM     },    .unit = "flags" },
+        { "sse4.1"  , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE4     },    .unit = "flags" },
+        { "sse4.2"  , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SSE42    },    .unit = "flags" },
+        { "avx"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX      },    .unit = "flags" },
+        { "avxslow" , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVXSLOW  },    .unit = "flags" },
+        { "xop"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_XOP      },    .unit = "flags" },
+        { "fma3"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA3     },    .unit = "flags" },
+        { "fma4"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_FMA4     },    .unit = "flags" },
+        { "avx2"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX2     },    .unit = "flags" },
+        { "bmi1"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI1     },    .unit = "flags" },
+        { "bmi2"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_BMI2     },    .unit = "flags" },
+        { "3dnow"   , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOW    },    .unit = "flags" },
+        { "3dnowext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_3DNOWEXT },    .unit = "flags" },
+        { "cmov",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_CMOV     },    .unit = "flags" },
+        { "aesni",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AESNI    },    .unit = "flags" },
+        { "avx512"  , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_AVX512   },    .unit = "flags" },
+
+#define CPU_FLAG_P2 AV_CPU_FLAG_CMOV | AV_CPU_FLAG_MMX
+#define CPU_FLAG_P3 CPU_FLAG_P2 | AV_CPU_FLAG_MMX2 | AV_CPU_FLAG_SSE
+#define CPU_FLAG_P4 CPU_FLAG_P3| AV_CPU_FLAG_SSE2
+        { "pentium2", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P2          },    .unit = "flags" },
+        { "pentium3", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P3          },    .unit = "flags" },
+        { "pentium4", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_P4          },    .unit = "flags" },
+
+#define CPU_FLAG_K62 AV_CPU_FLAG_MMX | AV_CPU_FLAG_3DNOW
+#define CPU_FLAG_ATHLON   CPU_FLAG_K62 | AV_CPU_FLAG_CMOV | AV_CPU_FLAG_3DNOWEXT | AV_CPU_FLAG_MMX2
+#define CPU_FLAG_ATHLONXP CPU_FLAG_ATHLON | AV_CPU_FLAG_SSE
+#define CPU_FLAG_K8  CPU_FLAG_ATHLONXP | AV_CPU_FLAG_SSE2
+        { "k6",       NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_MMX      },    .unit = "flags" },
+        { "k62",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K62         },    .unit = "flags" },
+        { "athlon",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLON      },    .unit = "flags" },
+        { "athlonxp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_ATHLONXP    },    .unit = "flags" },
+        { "k8",       NULL, 0, AV_OPT_TYPE_CONST, { .i64 = CPU_FLAG_K8          },    .unit = "flags" },
+#elif ARCH_ARM
+        { "armv5te",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV5TE  },    .unit = "flags" },
+        { "armv6",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6    },    .unit = "flags" },
+        { "armv6t2",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV6T2  },    .unit = "flags" },
+        { "vfp",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP      },    .unit = "flags" },
+        { "vfp_vm",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP_VM   },    .unit = "flags" },
+        { "vfpv3",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3    },    .unit = "flags" },
+        { "neon",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON     },    .unit = "flags" },
+        { "setend",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_SETEND   },    .unit = "flags" },
+#elif ARCH_AARCH64
+        { "armv8",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8    },    .unit = "flags" },
+        { "neon",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON     },    .unit = "flags" },
+        { "vfp",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP      },    .unit = "flags" },
+#endif
+        { NULL },
+    };
+    static const AVClass class = {
+        .class_name = "cpuflags",
+        .item_name  = av_default_item_name,
+        .option     = cpuflags_opts,
+        .version    = LIBAVUTIL_VERSION_INT,
+    };
+    const AVClass *pclass = &class;
+
+    return av_opt_eval_flags(&pclass, &cpuflags_opts[0], s, flags);
+}
+
+int av_cpu_count(void)
+{
+    static volatile int printed;
+
+    int nb_cpus = 1;
+#if HAVE_WINRT
+    SYSTEM_INFO sysinfo;
+#endif
+#if HAVE_SCHED_GETAFFINITY && defined(CPU_COUNT)
+    cpu_set_t cpuset;
+
+    CPU_ZERO(&cpuset);
+
+    if (!sched_getaffinity(0, sizeof(cpuset), &cpuset))
+        nb_cpus = CPU_COUNT(&cpuset);
+#elif HAVE_GETPROCESSAFFINITYMASK
+    DWORD_PTR proc_aff, sys_aff;
+    if (GetProcessAffinityMask(GetCurrentProcess(), &proc_aff, &sys_aff))
+        nb_cpus = av_popcount64(proc_aff);
+#elif HAVE_SYSCTL && defined(HW_NCPU)
+    int mib[2] = { CTL_HW, HW_NCPU };
+    size_t len = sizeof(nb_cpus);
+
+    if (sysctl(mib, 2, &nb_cpus, &len, NULL, 0) == -1)
+        nb_cpus = 0;
+#elif HAVE_SYSCONF && defined(_SC_NPROC_ONLN)
+    nb_cpus = sysconf(_SC_NPROC_ONLN);
+#elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN)
+    nb_cpus = sysconf(_SC_NPROCESSORS_ONLN);
+#elif HAVE_WINRT
+    GetNativeSystemInfo(&sysinfo);
+    nb_cpus = sysinfo.dwNumberOfProcessors;
+#endif
+
+    if (!printed) {
+        av_log(NULL, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);
+        printed = 1;
+    }
+
+    return nb_cpus;
+}
+
+size_t av_cpu_max_align(void)
+{
+    if (ARCH_AARCH64)
+        return ff_get_cpu_max_align_aarch64();
+    if (ARCH_ARM)
+        return ff_get_cpu_max_align_arm();
+    if (ARCH_PPC)
+        return ff_get_cpu_max_align_ppc();
+    if (ARCH_X86)
+        return ff_get_cpu_max_align_x86();
+
+    return 8;
+}
diff --git a/media/ffvpx/libavutil/cpu.h b/media/ffvpx/libavutil/cpu.h
new file mode 100644
index 0000000000..8bb9eb606b
--- /dev/null
+++ b/media/ffvpx/libavutil/cpu.h
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_CPU_H
+#define AVUTIL_CPU_H
+
+#include <stddef.h>
+
+#include "attributes.h"
+
+#define AV_CPU_FLAG_FORCE    0x80000000 /* force usage of selected flags (OR) */
+
+    /* lower 16 bits - CPU features */
+#define AV_CPU_FLAG_MMX          0x0001 ///< standard MMX
+#define AV_CPU_FLAG_MMXEXT       0x0002 ///< SSE integer functions or AMD MMX ext
+#define AV_CPU_FLAG_MMX2         0x0002 ///< SSE integer functions or AMD MMX ext
+#define AV_CPU_FLAG_3DNOW        0x0004 ///< AMD 3DNOW
+#define AV_CPU_FLAG_SSE          0x0008 ///< SSE functions
+#define AV_CPU_FLAG_SSE2         0x0010 ///< PIV SSE2 functions
+#define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster
+                                        ///< than regular MMX/SSE (e.g. Core1)
+#define AV_CPU_FLAG_3DNOWEXT     0x0020 ///< AMD 3DNowExt
+#define AV_CPU_FLAG_SSE3         0x0040 ///< Prescott SSE3 functions
+#define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster
+                                        ///< than regular MMX/SSE (e.g. Core1)
+#define AV_CPU_FLAG_SSSE3        0x0080 ///< Conroe SSSE3 functions
+#define AV_CPU_FLAG_SSSE3SLOW 0x4000000 ///< SSSE3 supported, but usually not faster
+#define AV_CPU_FLAG_ATOM     0x10000000 ///< Atom processor, some SSSE3 instructions are slower
+#define AV_CPU_FLAG_SSE4         0x0100 ///< Penryn SSE4.1 functions
+#define AV_CPU_FLAG_SSE42        0x0200 ///< Nehalem SSE4.2 functions
+#define AV_CPU_FLAG_AESNI       0x80000 ///< Advanced Encryption Standard functions
+#define AV_CPU_FLAG_AVX          0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used
+#define AV_CPU_FLAG_AVXSLOW   0x8000000 ///< AVX supported, but slow when using YMM registers (e.g. Bulldozer)
+#define AV_CPU_FLAG_XOP          0x0400 ///< Bulldozer XOP functions
+#define AV_CPU_FLAG_FMA4         0x0800 ///< Bulldozer FMA4 functions
+#define AV_CPU_FLAG_CMOV         0x1000 ///< supports cmov instruction
+#define AV_CPU_FLAG_AVX2         0x8000 ///< AVX2 functions: requires OS support even if YMM registers aren't used
+#define AV_CPU_FLAG_FMA3        0x10000 ///< Haswell FMA3 functions
+#define AV_CPU_FLAG_BMI1        0x20000 ///< Bit Manipulation Instruction Set 1
+#define AV_CPU_FLAG_BMI2        0x40000 ///< Bit Manipulation Instruction Set 2
+#define AV_CPU_FLAG_AVX512     0x100000 ///< AVX-512 functions: requires OS support even if YMM/ZMM registers aren't used
+
+#define AV_CPU_FLAG_ALTIVEC      0x0001 ///< standard
+#define AV_CPU_FLAG_VSX          0x0002 ///< ISA 2.06
+#define AV_CPU_FLAG_POWER8       0x0004 ///< ISA 2.07
+
+#define AV_CPU_FLAG_ARMV5TE      (1 << 0)
+#define AV_CPU_FLAG_ARMV6        (1 << 1)
+#define AV_CPU_FLAG_ARMV6T2      (1 << 2)
+#define AV_CPU_FLAG_VFP          (1 << 3)
+#define AV_CPU_FLAG_VFPV3        (1 << 4)
+#define AV_CPU_FLAG_NEON         (1 << 5)
+#define AV_CPU_FLAG_ARMV8        (1 << 6)
+#define AV_CPU_FLAG_VFP_VM       (1 << 7) ///< VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations
+#define AV_CPU_FLAG_SETEND       (1 <<16)
+
+/**
+ * Return the flags which specify extensions supported by the CPU.
+ * The returned value is affected by av_force_cpu_flags() if that was used
+ * before. So av_get_cpu_flags() can easily be used in an application to
+ * detect the enabled cpu flags.
+ */
+int av_get_cpu_flags(void);
+
+/**
+ * Disables cpu detection and forces the specified flags.
+ * -1 is a special case that disables forcing of specific flags.
+ */
+void av_force_cpu_flags(int flags);
+
+/**
+ * Set a mask on flags returned by av_get_cpu_flags().
+ * This function is mainly useful for testing.
+ * Please use av_force_cpu_flags() and av_get_cpu_flags() instead which are more flexible
+ */
+attribute_deprecated void av_set_cpu_flags_mask(int mask);
+
+/**
+ * Parse CPU flags from a string.
+ *
+ * The returned flags contain the specified flags as well as related unspecified flags.
+ *
+ * This function exists only for compatibility with libav.
+ * Please use av_parse_cpu_caps() when possible.
+ * @return a combination of AV_CPU_* flags, negative on error.
+ */
+attribute_deprecated
+int av_parse_cpu_flags(const char *s);
+
+/**
+ * Parse CPU caps from a string and update the given AV_CPU_* flags based on that.
+ *
+ * @return negative on error.
+ */
+int av_parse_cpu_caps(unsigned *flags, const char *s);
+
+/**
+ * @return the number of logical CPU cores present.
+ */
+int av_cpu_count(void);
+
+/**
+ * Get the maximum data alignment that may be required by FFmpeg.
+ *
+ * Note that this is affected by the build configuration and the CPU flags mask,
+ * so e.g. if the CPU supports AVX, but libavutil has been built with
+ * --disable-avx or the AV_CPU_FLAG_AVX flag has been disabled through
+ *  av_set_cpu_flags_mask(), then this function will behave as if AVX is not
+ *  present.
+ */
+size_t av_cpu_max_align(void);
+
+#endif /* AVUTIL_CPU_H */
diff --git a/media/ffvpx/libavutil/cpu_internal.h b/media/ffvpx/libavutil/cpu_internal.h
new file mode 100644
index 0000000000..37122d1c5f
--- /dev/null
+++ b/media/ffvpx/libavutil/cpu_internal.h
@@ -0,0 +1,54 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_CPU_INTERNAL_H
+#define AVUTIL_CPU_INTERNAL_H
+
+#include "config.h"
+
+#include "cpu.h"
+
+#define CPUEXT_SUFFIX(flags, suffix, cpuext)                            \
+    (HAVE_ ## cpuext ## suffix && ((flags) & AV_CPU_FLAG_ ## cpuext))
+
+#define CPUEXT_SUFFIX_FAST2(flags, suffix, cpuext, slow_cpuext)         \
+    (HAVE_ ## cpuext ## suffix && ((flags) & AV_CPU_FLAG_ ## cpuext) && \
+     !((flags) & AV_CPU_FLAG_ ## slow_cpuext ## SLOW))
+
+#define CPUEXT_SUFFIX_SLOW2(flags, suffix, cpuext, slow_cpuext)         \
+    (HAVE_ ## cpuext ## suffix && ((flags) & AV_CPU_FLAG_ ## cpuext) && \
+     ((flags) & AV_CPU_FLAG_ ## slow_cpuext ## SLOW))
+
+#define CPUEXT_SUFFIX_FAST(flags, suffix, cpuext) CPUEXT_SUFFIX_FAST2(flags, suffix, cpuext, cpuext)
+#define CPUEXT_SUFFIX_SLOW(flags, suffix, cpuext) CPUEXT_SUFFIX_SLOW2(flags, suffix, cpuext, cpuext)
+
+#define CPUEXT(flags, cpuext) CPUEXT_SUFFIX(flags, , cpuext)
+#define CPUEXT_FAST(flags, cpuext) CPUEXT_SUFFIX_FAST(flags, , cpuext)
+#define CPUEXT_SLOW(flags, cpuext) CPUEXT_SUFFIX_SLOW(flags, , cpuext)
+
+int ff_get_cpu_flags_aarch64(void);
+int ff_get_cpu_flags_arm(void);
+int ff_get_cpu_flags_ppc(void);
+int ff_get_cpu_flags_x86(void);
+
+size_t ff_get_cpu_max_align_aarch64(void);
+size_t ff_get_cpu_max_align_arm(void);
+size_t ff_get_cpu_max_align_ppc(void);
+size_t ff_get_cpu_max_align_x86(void);
+
+#endif /* AVUTIL_CPU_INTERNAL_H */
diff --git a/media/ffvpx/libavutil/crc.c b/media/ffvpx/libavutil/crc.c
new file mode 100644
index 0000000000..c45ea63a62
--- /dev/null
+++ b/media/ffvpx/libavutil/crc.c
@@ -0,0 +1,415 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include "thread.h"
+#include "avassert.h"
+#include "bswap.h"
+#include "common.h"
+#include "crc.h"
+
+#if CONFIG_HARDCODED_TABLES
+static const AVCRC av_crc_table[AV_CRC_MAX][257] = {
+    [AV_CRC_8_ATM] = {
+        0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15, 0x38, 0x3F, 0x36, 0x31,
+        0x24, 0x23, 0x2A, 0x2D, 0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65,
+        0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, 0x5A, 0x5D, 0xE0, 0xE7, 0xEE, 0xE9,
+        0xFC, 0xFB, 0xF2, 0xF5, 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, 0xC3, 0xCA, 0xCD,
+        0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85, 0xA8, 0xAF, 0xA6, 0xA1,
+        0xB4, 0xB3, 0xBA, 0xBD, 0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2,
+        0xFF, 0xF8, 0xF1, 0xF6, 0xE3, 0xE4, 0xED, 0xEA, 0xB7, 0xB0, 0xB9, 0xBE,
+        0xAB, 0xAC, 0xA5, 0xA2, 0x8F, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A,
+        0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32, 0x1F, 0x18, 0x11, 0x16,
+        0x03, 0x04, 0x0D, 0x0A, 0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42,
+        0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A, 0x89, 0x8E, 0x87, 0x80,
+        0x95, 0x92, 0x9B, 0x9C, 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4,
+        0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, 0xEB, 0xEC, 0xC1, 0xC6, 0xCF, 0xC8,
+        0xDD, 0xDA, 0xD3, 0xD4, 0x69, 0x6E, 0x67, 0x60, 0x75, 0x72, 0x7B, 0x7C,
+        0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44, 0x19, 0x1E, 0x17, 0x10,
+        0x05, 0x02, 0x0B, 0x0C, 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34,
+        0x4E, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5C, 0x5B, 0x76, 0x71, 0x78, 0x7F,
+        0x6A, 0x6D, 0x64, 0x63, 0x3E, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B,
+        0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13, 0xAE, 0xA9, 0xA0, 0xA7,
+        0xB2, 0xB5, 0xBC, 0xBB, 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83,
+        0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB, 0xE6, 0xE1, 0xE8, 0xEF,
+        0xFA, 0xFD, 0xF4, 0xF3, 0x01
+    },
+    [AV_CRC_8_EBU] = {
+        0x00, 0x1D, 0x3A, 0x27, 0x74, 0x69, 0x4E, 0x53, 0xE8, 0xF5, 0xD2, 0xCF,
+        0x9C, 0x81, 0xA6, 0xBB, 0xCD, 0xD0, 0xF7, 0xEA, 0xB9, 0xA4, 0x83, 0x9E,
+        0x25, 0x38, 0x1F, 0x02, 0x51, 0x4C, 0x6B, 0x76, 0x87, 0x9A, 0xBD, 0xA0,
+        0xF3, 0xEE, 0xC9, 0xD4, 0x6F, 0x72, 0x55, 0x48, 0x1B, 0x06, 0x21, 0x3C,
+        0x4A, 0x57, 0x70, 0x6D, 0x3E, 0x23, 0x04, 0x19, 0xA2, 0xBF, 0x98, 0x85,
+        0xD6, 0xCB, 0xEC, 0xF1, 0x13, 0x0E, 0x29, 0x34, 0x67, 0x7A, 0x5D, 0x40,
+        0xFB, 0xE6, 0xC1, 0xDC, 0x8F, 0x92, 0xB5, 0xA8, 0xDE, 0xC3, 0xE4, 0xF9,
+        0xAA, 0xB7, 0x90, 0x8D, 0x36, 0x2B, 0x0C, 0x11, 0x42, 0x5F, 0x78, 0x65,
+        0x94, 0x89, 0xAE, 0xB3, 0xE0, 0xFD, 0xDA, 0xC7, 0x7C, 0x61, 0x46, 0x5B,
+        0x08, 0x15, 0x32, 0x2F, 0x59, 0x44, 0x63, 0x7E, 0x2D, 0x30, 0x17, 0x0A,
+        0xB1, 0xAC, 0x8B, 0x96, 0xC5, 0xD8, 0xFF, 0xE2, 0x26, 0x3B, 0x1C, 0x01,
+        0x52, 0x4F, 0x68, 0x75, 0xCE, 0xD3, 0xF4, 0xE9, 0xBA, 0xA7, 0x80, 0x9D,
+        0xEB, 0xF6, 0xD1, 0xCC, 0x9F, 0x82, 0xA5, 0xB8, 0x03, 0x1E, 0x39, 0x24,
+        0x77, 0x6A, 0x4D, 0x50, 0xA1, 0xBC, 0x9B, 0x86, 0xD5, 0xC8, 0xEF, 0xF2,
+        0x49, 0x54, 0x73, 0x6E, 0x3D, 0x20, 0x07, 0x1A, 0x6C, 0x71, 0x56, 0x4B,
+        0x18, 0x05, 0x22, 0x3F, 0x84, 0x99, 0xBE, 0xA3, 0xF0, 0xED, 0xCA, 0xD7,
+        0x35, 0x28, 0x0F, 0x12, 0x41, 0x5C, 0x7B, 0x66, 0xDD, 0xC0, 0xE7, 0xFA,
+        0xA9, 0xB4, 0x93, 0x8E, 0xF8, 0xE5, 0xC2, 0xDF, 0x8C, 0x91, 0xB6, 0xAB,
+        0x10, 0x0D, 0x2A, 0x37, 0x64, 0x79, 0x5E, 0x43, 0xB2, 0xAF, 0x88, 0x95,
+        0xC6, 0xDB, 0xFC, 0xE1, 0x5A, 0x47, 0x60, 0x7D, 0x2E, 0x33, 0x14, 0x09,
+        0x7F, 0x62, 0x45, 0x58, 0x0B, 0x16, 0x31, 0x2C, 0x97, 0x8A, 0xAD, 0xB0,
+        0xE3, 0xFE, 0xD9, 0xC4, 0x01
+    },
+    [AV_CRC_16_ANSI] = {
+        0x0000, 0x0580, 0x0F80, 0x0A00, 0x1B80, 0x1E00, 0x1400, 0x1180,
+        0x3380, 0x3600, 0x3C00, 0x3980, 0x2800, 0x2D80, 0x2780, 0x2200,
+        0x6380, 0x6600, 0x6C00, 0x6980, 0x7800, 0x7D80, 0x7780, 0x7200,
+        0x5000, 0x5580, 0x5F80, 0x5A00, 0x4B80, 0x4E00, 0x4400, 0x4180,
+        0xC380, 0xC600, 0xCC00, 0xC980, 0xD800, 0xDD80, 0xD780, 0xD200,
+        0xF000, 0xF580, 0xFF80, 0xFA00, 0xEB80, 0xEE00, 0xE400, 0xE180,
+        0xA000, 0xA580, 0xAF80, 0xAA00, 0xBB80, 0xBE00, 0xB400, 0xB180,
+        0x9380, 0x9600, 0x9C00, 0x9980, 0x8800, 0x8D80, 0x8780, 0x8200,
+        0x8381, 0x8601, 0x8C01, 0x8981, 0x9801, 0x9D81, 0x9781, 0x9201,
+        0xB001, 0xB581, 0xBF81, 0xBA01, 0xAB81, 0xAE01, 0xA401, 0xA181,
+        0xE001, 0xE581, 0xEF81, 0xEA01, 0xFB81, 0xFE01, 0xF401, 0xF181,
+        0xD381, 0xD601, 0xDC01, 0xD981, 0xC801, 0xCD81, 0xC781, 0xC201,
+        0x4001, 0x4581, 0x4F81, 0x4A01, 0x5B81, 0x5E01, 0x5401, 0x5181,
+        0x7381, 0x7601, 0x7C01, 0x7981, 0x6801, 0x6D81, 0x6781, 0x6201,
+        0x2381, 0x2601, 0x2C01, 0x2981, 0x3801, 0x3D81, 0x3781, 0x3201,
+        0x1001, 0x1581, 0x1F81, 0x1A01, 0x0B81, 0x0E01, 0x0401, 0x0181,
+        0x0383, 0x0603, 0x0C03, 0x0983, 0x1803, 0x1D83, 0x1783, 0x1203,
+        0x3003, 0x3583, 0x3F83, 0x3A03, 0x2B83, 0x2E03, 0x2403, 0x2183,
+        0x6003, 0x6583, 0x6F83, 0x6A03, 0x7B83, 0x7E03, 0x7403, 0x7183,
+        0x5383, 0x5603, 0x5C03, 0x5983, 0x4803, 0x4D83, 0x4783, 0x4203,
+        0xC003, 0xC583, 0xCF83, 0xCA03, 0xDB83, 0xDE03, 0xD403, 0xD183,
+        0xF383, 0xF603, 0xFC03, 0xF983, 0xE803, 0xED83, 0xE783, 0xE203,
+        0xA383, 0xA603, 0xAC03, 0xA983, 0xB803, 0xBD83, 0xB783, 0xB203,
+        0x9003, 0x9583, 0x9F83, 0x9A03, 0x8B83, 0x8E03, 0x8403, 0x8183,
+        0x8002, 0x8582, 0x8F82, 0x8A02, 0x9B82, 0x9E02, 0x9402, 0x9182,
+        0xB382, 0xB602, 0xBC02, 0xB982, 0xA802, 0xAD82, 0xA782, 0xA202,
+        0xE382, 0xE602, 0xEC02, 0xE982, 0xF802, 0xFD82, 0xF782, 0xF202,
+        0xD002, 0xD582, 0xDF82, 0xDA02, 0xCB82, 0xCE02, 0xC402, 0xC182,
+        0x4382, 0x4602, 0x4C02, 0x4982, 0x5802, 0x5D82, 0x5782, 0x5202,
+        0x7002, 0x7582, 0x7F82, 0x7A02, 0x6B82, 0x6E02, 0x6402, 0x6182,
+        0x2002, 0x2582, 0x2F82, 0x2A02, 0x3B82, 0x3E02, 0x3402, 0x3182,
+        0x1382, 0x1602, 0x1C02, 0x1982, 0x0802, 0x0D82, 0x0782, 0x0202,
+        0x0001
+    },
+    [AV_CRC_16_CCITT] = {
+        0x0000, 0x2110, 0x4220, 0x6330, 0x8440, 0xA550, 0xC660, 0xE770,
+        0x0881, 0x2991, 0x4AA1, 0x6BB1, 0x8CC1, 0xADD1, 0xCEE1, 0xEFF1,
+        0x3112, 0x1002, 0x7332, 0x5222, 0xB552, 0x9442, 0xF772, 0xD662,
+        0x3993, 0x1883, 0x7BB3, 0x5AA3, 0xBDD3, 0x9CC3, 0xFFF3, 0xDEE3,
+        0x6224, 0x4334, 0x2004, 0x0114, 0xE664, 0xC774, 0xA444, 0x8554,
+        0x6AA5, 0x4BB5, 0x2885, 0x0995, 0xEEE5, 0xCFF5, 0xACC5, 0x8DD5,
+        0x5336, 0x7226, 0x1116, 0x3006, 0xD776, 0xF666, 0x9556, 0xB446,
+        0x5BB7, 0x7AA7, 0x1997, 0x3887, 0xDFF7, 0xFEE7, 0x9DD7, 0xBCC7,
+        0xC448, 0xE558, 0x8668, 0xA778, 0x4008, 0x6118, 0x0228, 0x2338,
+        0xCCC9, 0xEDD9, 0x8EE9, 0xAFF9, 0x4889, 0x6999, 0x0AA9, 0x2BB9,
+        0xF55A, 0xD44A, 0xB77A, 0x966A, 0x711A, 0x500A, 0x333A, 0x122A,
+        0xFDDB, 0xDCCB, 0xBFFB, 0x9EEB, 0x799B, 0x588B, 0x3BBB, 0x1AAB,
+        0xA66C, 0x877C, 0xE44C, 0xC55C, 0x222C, 0x033C, 0x600C, 0x411C,
+        0xAEED, 0x8FFD, 0xECCD, 0xCDDD, 0x2AAD, 0x0BBD, 0x688D, 0x499D,
+        0x977E, 0xB66E, 0xD55E, 0xF44E, 0x133E, 0x322E, 0x511E, 0x700E,
+        0x9FFF, 0xBEEF, 0xDDDF, 0xFCCF, 0x1BBF, 0x3AAF, 0x599F, 0x788F,
+        0x8891, 0xA981, 0xCAB1, 0xEBA1, 0x0CD1, 0x2DC1, 0x4EF1, 0x6FE1,
+        0x8010, 0xA100, 0xC230, 0xE320, 0x0450, 0x2540, 0x4670, 0x6760,
+        0xB983, 0x9893, 0xFBA3, 0xDAB3, 0x3DC3, 0x1CD3, 0x7FE3, 0x5EF3,
+        0xB102, 0x9012, 0xF322, 0xD232, 0x3542, 0x1452, 0x7762, 0x5672,
+        0xEAB5, 0xCBA5, 0xA895, 0x8985, 0x6EF5, 0x4FE5, 0x2CD5, 0x0DC5,
+        0xE234, 0xC324, 0xA014, 0x8104, 0x6674, 0x4764, 0x2454, 0x0544,
+        0xDBA7, 0xFAB7, 0x9987, 0xB897, 0x5FE7, 0x7EF7, 0x1DC7, 0x3CD7,
+        0xD326, 0xF236, 0x9106, 0xB016, 0x5766, 0x7676, 0x1546, 0x3456,
+        0x4CD9, 0x6DC9, 0x0EF9, 0x2FE9, 0xC899, 0xE989, 0x8AB9, 0xABA9,
+        0x4458, 0x6548, 0x0678, 0x2768, 0xC018, 0xE108, 0x8238, 0xA328,
+        0x7DCB, 0x5CDB, 0x3FEB, 0x1EFB, 0xF98B, 0xD89B, 0xBBAB, 0x9ABB,
+        0x754A, 0x545A, 0x376A, 0x167A, 0xF10A, 0xD01A, 0xB32A, 0x923A,
+        0x2EFD, 0x0FED, 0x6CDD, 0x4DCD, 0xAABD, 0x8BAD, 0xE89D, 0xC98D,
+        0x267C, 0x076C, 0x645C, 0x454C, 0xA23C, 0x832C, 0xE01C, 0xC10C,
+        0x1FEF, 0x3EFF, 0x5DCF, 0x7CDF, 0x9BAF, 0xBABF, 0xD98F, 0xF89F,
+        0x176E, 0x367E, 0x554E, 0x745E, 0x932E, 0xB23E, 0xD10E, 0xF01E,
+        0x0001
+    },
+    [AV_CRC_24_IEEE] = {
+        0x000000, 0xFB4C86, 0x0DD58A, 0xF6990C, 0xE1E693, 0x1AAA15, 0xEC3319,
+        0x177F9F, 0x3981A1, 0xC2CD27, 0x34542B, 0xCF18AD, 0xD86732, 0x232BB4,
+        0xD5B2B8, 0x2EFE3E, 0x894EC5, 0x720243, 0x849B4F, 0x7FD7C9, 0x68A856,
+        0x93E4D0, 0x657DDC, 0x9E315A, 0xB0CF64, 0x4B83E2, 0xBD1AEE, 0x465668,
+        0x5129F7, 0xAA6571, 0x5CFC7D, 0xA7B0FB, 0xE9D10C, 0x129D8A, 0xE40486,
+        0x1F4800, 0x08379F, 0xF37B19, 0x05E215, 0xFEAE93, 0xD050AD, 0x2B1C2B,
+        0xDD8527, 0x26C9A1, 0x31B63E, 0xCAFAB8, 0x3C63B4, 0xC72F32, 0x609FC9,
+        0x9BD34F, 0x6D4A43, 0x9606C5, 0x81795A, 0x7A35DC, 0x8CACD0, 0x77E056,
+        0x591E68, 0xA252EE, 0x54CBE2, 0xAF8764, 0xB8F8FB, 0x43B47D, 0xB52D71,
+        0x4E61F7, 0xD2A319, 0x29EF9F, 0xDF7693, 0x243A15, 0x33458A, 0xC8090C,
+        0x3E9000, 0xC5DC86, 0xEB22B8, 0x106E3E, 0xE6F732, 0x1DBBB4, 0x0AC42B,
+        0xF188AD, 0x0711A1, 0xFC5D27, 0x5BEDDC, 0xA0A15A, 0x563856, 0xAD74D0,
+        0xBA0B4F, 0x4147C9, 0xB7DEC5, 0x4C9243, 0x626C7D, 0x9920FB, 0x6FB9F7,
+        0x94F571, 0x838AEE, 0x78C668, 0x8E5F64, 0x7513E2, 0x3B7215, 0xC03E93,
+        0x36A79F, 0xCDEB19, 0xDA9486, 0x21D800, 0xD7410C, 0x2C0D8A, 0x02F3B4,
+        0xF9BF32, 0x0F263E, 0xF46AB8, 0xE31527, 0x1859A1, 0xEEC0AD, 0x158C2B,
+        0xB23CD0, 0x497056, 0xBFE95A, 0x44A5DC, 0x53DA43, 0xA896C5, 0x5E0FC9,
+        0xA5434F, 0x8BBD71, 0x70F1F7, 0x8668FB, 0x7D247D, 0x6A5BE2, 0x911764,
+        0x678E68, 0x9CC2EE, 0xA44733, 0x5F0BB5, 0xA992B9, 0x52DE3F, 0x45A1A0,
+        0xBEED26, 0x48742A, 0xB338AC, 0x9DC692, 0x668A14, 0x901318, 0x6B5F9E,
+        0x7C2001, 0x876C87, 0x71F58B, 0x8AB90D, 0x2D09F6, 0xD64570, 0x20DC7C,
+        0xDB90FA, 0xCCEF65, 0x37A3E3, 0xC13AEF, 0x3A7669, 0x148857, 0xEFC4D1,
+        0x195DDD, 0xE2115B, 0xF56EC4, 0x0E2242, 0xF8BB4E, 0x03F7C8, 0x4D963F,
+        0xB6DAB9, 0x4043B5, 0xBB0F33, 0xAC70AC, 0x573C2A, 0xA1A526, 0x5AE9A0,
+        0x74179E, 0x8F5B18, 0x79C214, 0x828E92, 0x95F10D, 0x6EBD8B, 0x982487,
+        0x636801, 0xC4D8FA, 0x3F947C, 0xC90D70, 0x3241F6, 0x253E69, 0xDE72EF,
+        0x28EBE3, 0xD3A765, 0xFD595B, 0x0615DD, 0xF08CD1, 0x0BC057, 0x1CBFC8,
+        0xE7F34E, 0x116A42, 0xEA26C4, 0x76E42A, 0x8DA8AC, 0x7B31A0, 0x807D26,
+        0x9702B9, 0x6C4E3F, 0x9AD733, 0x619BB5, 0x4F658B, 0xB4290D, 0x42B001,
+        0xB9FC87, 0xAE8318, 0x55CF9E, 0xA35692, 0x581A14, 0xFFAAEF, 0x04E669,
+        0xF27F65, 0x0933E3, 0x1E4C7C, 0xE500FA, 0x1399F6, 0xE8D570, 0xC62B4E,
+        0x3D67C8, 0xCBFEC4, 0x30B242, 0x27CDDD, 0xDC815B, 0x2A1857, 0xD154D1,
+        0x9F3526, 0x6479A0, 0x92E0AC, 0x69AC2A, 0x7ED3B5, 0x859F33, 0x73063F,
+        0x884AB9, 0xA6B487, 0x5DF801, 0xAB610D, 0x502D8B, 0x475214, 0xBC1E92,
+        0x4A879E, 0xB1CB18, 0x167BE3, 0xED3765, 0x1BAE69, 0xE0E2EF, 0xF79D70,
+        0x0CD1F6, 0xFA48FA, 0x01047C, 0x2FFA42, 0xD4B6C4, 0x222FC8, 0xD9634E,
+        0xCE1CD1, 0x355057, 0xC3C95B, 0x3885DD, 0x000001,
+    },
+    [AV_CRC_32_IEEE] = {
+        0x00000000, 0xB71DC104, 0x6E3B8209, 0xD926430D, 0xDC760413, 0x6B6BC517,
+        0xB24D861A, 0x0550471E, 0xB8ED0826, 0x0FF0C922, 0xD6D68A2F, 0x61CB4B2B,
+        0x649B0C35, 0xD386CD31, 0x0AA08E3C, 0xBDBD4F38, 0x70DB114C, 0xC7C6D048,
+        0x1EE09345, 0xA9FD5241, 0xACAD155F, 0x1BB0D45B, 0xC2969756, 0x758B5652,
+        0xC836196A, 0x7F2BD86E, 0xA60D9B63, 0x11105A67, 0x14401D79, 0xA35DDC7D,
+        0x7A7B9F70, 0xCD665E74, 0xE0B62398, 0x57ABE29C, 0x8E8DA191, 0x39906095,
+        0x3CC0278B, 0x8BDDE68F, 0x52FBA582, 0xE5E66486, 0x585B2BBE, 0xEF46EABA,
+        0x3660A9B7, 0x817D68B3, 0x842D2FAD, 0x3330EEA9, 0xEA16ADA4, 0x5D0B6CA0,
+        0x906D32D4, 0x2770F3D0, 0xFE56B0DD, 0x494B71D9, 0x4C1B36C7, 0xFB06F7C3,
+        0x2220B4CE, 0x953D75CA, 0x28803AF2, 0x9F9DFBF6, 0x46BBB8FB, 0xF1A679FF,
+        0xF4F63EE1, 0x43EBFFE5, 0x9ACDBCE8, 0x2DD07DEC, 0x77708634, 0xC06D4730,
+        0x194B043D, 0xAE56C539, 0xAB068227, 0x1C1B4323, 0xC53D002E, 0x7220C12A,
+        0xCF9D8E12, 0x78804F16, 0xA1A60C1B, 0x16BBCD1F, 0x13EB8A01, 0xA4F64B05,
+        0x7DD00808, 0xCACDC90C, 0x07AB9778, 0xB0B6567C, 0x69901571, 0xDE8DD475,
+        0xDBDD936B, 0x6CC0526F, 0xB5E61162, 0x02FBD066, 0xBF469F5E, 0x085B5E5A,
+        0xD17D1D57, 0x6660DC53, 0x63309B4D, 0xD42D5A49, 0x0D0B1944, 0xBA16D840,
+        0x97C6A5AC, 0x20DB64A8, 0xF9FD27A5, 0x4EE0E6A1, 0x4BB0A1BF, 0xFCAD60BB,
+        0x258B23B6, 0x9296E2B2, 0x2F2BAD8A, 0x98366C8E, 0x41102F83, 0xF60DEE87,
+        0xF35DA999, 0x4440689D, 0x9D662B90, 0x2A7BEA94, 0xE71DB4E0, 0x500075E4,
+        0x892636E9, 0x3E3BF7ED, 0x3B6BB0F3, 0x8C7671F7, 0x555032FA, 0xE24DF3FE,
+        0x5FF0BCC6, 0xE8ED7DC2, 0x31CB3ECF, 0x86D6FFCB, 0x8386B8D5, 0x349B79D1,
+        0xEDBD3ADC, 0x5AA0FBD8, 0xEEE00C69, 0x59FDCD6D, 0x80DB8E60, 0x37C64F64,
+        0x3296087A, 0x858BC97E, 0x5CAD8A73, 0xEBB04B77, 0x560D044F, 0xE110C54B,
+        0x38368646, 0x8F2B4742, 0x8A7B005C, 0x3D66C158, 0xE4408255, 0x535D4351,
+        0x9E3B1D25, 0x2926DC21, 0xF0009F2C, 0x471D5E28, 0x424D1936, 0xF550D832,
+        0x2C769B3F, 0x9B6B5A3B, 0x26D61503, 0x91CBD407, 0x48ED970A, 0xFFF0560E,
+        0xFAA01110, 0x4DBDD014, 0x949B9319, 0x2386521D, 0x0E562FF1, 0xB94BEEF5,
+        0x606DADF8, 0xD7706CFC, 0xD2202BE2, 0x653DEAE6, 0xBC1BA9EB, 0x0B0668EF,
+        0xB6BB27D7, 0x01A6E6D3, 0xD880A5DE, 0x6F9D64DA, 0x6ACD23C4, 0xDDD0E2C0,
+        0x04F6A1CD, 0xB3EB60C9, 0x7E8D3EBD, 0xC990FFB9, 0x10B6BCB4, 0xA7AB7DB0,
+        0xA2FB3AAE, 0x15E6FBAA, 0xCCC0B8A7, 0x7BDD79A3, 0xC660369B, 0x717DF79F,
+        0xA85BB492, 0x1F467596, 0x1A163288, 0xAD0BF38C, 0x742DB081, 0xC3307185,
+        0x99908A5D, 0x2E8D4B59, 0xF7AB0854, 0x40B6C950, 0x45E68E4E, 0xF2FB4F4A,
+        0x2BDD0C47, 0x9CC0CD43, 0x217D827B, 0x9660437F, 0x4F460072, 0xF85BC176,
+        0xFD0B8668, 0x4A16476C, 0x93300461, 0x242DC565, 0xE94B9B11, 0x5E565A15,
+        0x87701918, 0x306DD81C, 0x353D9F02, 0x82205E06, 0x5B061D0B, 0xEC1BDC0F,
+        0x51A69337, 0xE6BB5233, 0x3F9D113E, 0x8880D03A, 0x8DD09724, 0x3ACD5620,
+        0xE3EB152D, 0x54F6D429, 0x7926A9C5, 0xCE3B68C1, 0x171D2BCC, 0xA000EAC8,
+        0xA550ADD6, 0x124D6CD2, 0xCB6B2FDF, 0x7C76EEDB, 0xC1CBA1E3, 0x76D660E7,
+        0xAFF023EA, 0x18EDE2EE, 0x1DBDA5F0, 0xAAA064F4, 0x738627F9, 0xC49BE6FD,
+        0x09FDB889, 0xBEE0798D, 0x67C63A80, 0xD0DBFB84, 0xD58BBC9A, 0x62967D9E,
+        0xBBB03E93, 0x0CADFF97, 0xB110B0AF, 0x060D71AB, 0xDF2B32A6, 0x6836F3A2,
+        0x6D66B4BC, 0xDA7B75B8, 0x035D36B5, 0xB440F7B1, 0x00000001
+    },
+    [AV_CRC_32_IEEE_LE] = {
+        0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F,
+        0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
+        0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, 0x1DB71064, 0x6AB020F2,
+        0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+        0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9,
+        0xFA0F3D63, 0x8D080DF5, 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
+        0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, 0x35B5A8FA, 0x42B2986C,
+        0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+        0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423,
+        0xCFBA9599, 0xB8BDA50F, 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
+        0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, 0x76DC4190, 0x01DB7106,
+        0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+        0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D,
+        0x91646C97, 0xE6635C01, 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
+        0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, 0x65B0D9C6, 0x12B7E950,
+        0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+        0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7,
+        0xA4D1C46D, 0xD3D6F4FB, 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
+        0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, 0x5005713C, 0x270241AA,
+        0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+        0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81,
+        0xB7BD5C3B, 0xC0BA6CAD, 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
+        0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, 0xE3630B12, 0x94643B84,
+        0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+        0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB,
+        0x196C3671, 0x6E6B06E7, 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
+        0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, 0xD6D6A3E8, 0xA1D1937E,
+        0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+        0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55,
+        0x316E8EEF, 0x4669BE79, 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
+        0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, 0xC5BA3BBE, 0xB2BD0B28,
+        0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+        0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F,
+        0x72076785, 0x05005713, 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
+        0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 0x86D3D2D4, 0xF1D4E242,
+        0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+        0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69,
+        0x616BFFD3, 0x166CCF45, 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
+        0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, 0xAED16A4A, 0xD9D65ADC,
+        0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+        0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693,
+        0x54DE5729, 0x23D967BF, 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
+        0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D, 0x00000001
+    },
+    [AV_CRC_16_ANSI_LE] = {
+        0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
+        0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
+        0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
+        0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
+        0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
+        0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
+        0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
+        0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
+        0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
+        0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
+        0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
+        0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
+        0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
+        0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
+        0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
+        0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
+        0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
+        0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
+        0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
+        0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
+        0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
+        0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
+        0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
+        0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
+        0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
+        0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
+        0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
+        0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
+        0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
+        0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
+        0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
+        0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040,
+        0x0001
+    },
+};
+#else
+#if CONFIG_SMALL
+#define CRC_TABLE_SIZE 257
+#else
+#define CRC_TABLE_SIZE 1024
+#endif
+static AVCRC av_crc_table[AV_CRC_MAX][CRC_TABLE_SIZE];
+
+#define DECLARE_CRC_INIT_TABLE_ONCE(id, le, bits, poly)                                       \
+static AVOnce id ## _once_control = AV_ONCE_INIT;                                             \
+static void id ## _init_table_once(void)                                                      \
+{                                                                                             \
+    av_assert0(av_crc_init(av_crc_table[id], le, bits, poly, sizeof(av_crc_table[id])) >= 0); \
+}
+
+#define CRC_INIT_TABLE_ONCE(id) ff_thread_once(&id ## _once_control, id ## _init_table_once)
+
+DECLARE_CRC_INIT_TABLE_ONCE(AV_CRC_8_ATM,      0,  8,       0x07)
+DECLARE_CRC_INIT_TABLE_ONCE(AV_CRC_8_EBU,      0,  8,       0x1D)
+DECLARE_CRC_INIT_TABLE_ONCE(AV_CRC_16_ANSI,    0, 16,     0x8005)
+DECLARE_CRC_INIT_TABLE_ONCE(AV_CRC_16_CCITT,   0, 16,     0x1021)
+DECLARE_CRC_INIT_TABLE_ONCE(AV_CRC_24_IEEE,    0, 24,   0x864CFB)
+DECLARE_CRC_INIT_TABLE_ONCE(AV_CRC_32_IEEE,    0, 32, 0x04C11DB7)
+DECLARE_CRC_INIT_TABLE_ONCE(AV_CRC_32_IEEE_LE, 1, 32, 0xEDB88320)
+DECLARE_CRC_INIT_TABLE_ONCE(AV_CRC_16_ANSI_LE, 1, 16,     0xA001)
+#endif
+
+int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size)
+{
+    unsigned i, j;
+    uint32_t c;
+
+    if (bits < 8 || bits > 32 || poly >= (1LL << bits))
+        return AVERROR(EINVAL);
+    if (ctx_size != sizeof(AVCRC) * 257 && ctx_size != sizeof(AVCRC) * 1024)
+        return AVERROR(EINVAL);
+
+    for (i = 0; i < 256; i++) {
+        if (le) {
+            for (c = i, j = 0; j < 8; j++)
+                c = (c >> 1) ^ (poly & (-(c & 1)));
+            ctx[i] = c;
+        } else {
+            for (c = i << 24, j = 0; j < 8; j++)
+                c = (c << 1) ^ ((poly << (32 - bits)) & (((int32_t) c) >> 31));
+            ctx[i] = av_bswap32(c);
+        }
+    }
+    ctx[256] = 1;
+#if !CONFIG_SMALL
+    if (ctx_size >= sizeof(AVCRC) * 1024)
+        for (i = 0; i < 256; i++)
+            for (j = 0; j < 3; j++)
+                ctx[256 * (j + 1) + i] =
+                    (ctx[256 * j + i] >> 8) ^ ctx[ctx[256 * j + i] & 0xFF];
+#endif
+
+    return 0;
+}
+
+const AVCRC *av_crc_get_table(AVCRCId crc_id)
+{
+#if !CONFIG_HARDCODED_TABLES
+    switch (crc_id) {
+    case AV_CRC_8_ATM:      CRC_INIT_TABLE_ONCE(AV_CRC_8_ATM); break;
+    case AV_CRC_8_EBU:      CRC_INIT_TABLE_ONCE(AV_CRC_8_EBU); break;
+    case AV_CRC_16_ANSI:    CRC_INIT_TABLE_ONCE(AV_CRC_16_ANSI); break;
+    case AV_CRC_16_CCITT:   CRC_INIT_TABLE_ONCE(AV_CRC_16_CCITT); break;
+    case AV_CRC_24_IEEE:    CRC_INIT_TABLE_ONCE(AV_CRC_24_IEEE); break;
+    case AV_CRC_32_IEEE:    CRC_INIT_TABLE_ONCE(AV_CRC_32_IEEE); break;
+    case AV_CRC_32_IEEE_LE: CRC_INIT_TABLE_ONCE(AV_CRC_32_IEEE_LE); break;
+    case AV_CRC_16_ANSI_LE: CRC_INIT_TABLE_ONCE(AV_CRC_16_ANSI_LE); break;
+    default: av_assert0(0);
+    }
+#endif
+    return av_crc_table[crc_id];
+}
+
+uint32_t av_crc(const AVCRC *ctx, uint32_t crc,
+                const uint8_t *buffer, size_t length)
+{
+    const uint8_t *end = buffer + length;
+
+#if !CONFIG_SMALL
+    if (!ctx[256]) {
+        while (((intptr_t) buffer & 3) && buffer < end)
+            crc = ctx[((uint8_t) crc) ^ *buffer++] ^ (crc >> 8);
+
+        while (buffer < end - 3) {
+            crc ^= av_le2ne32(*(const uint32_t *) buffer); buffer += 4;
+            crc = ctx[3 * 256 + ( crc        & 0xFF)] ^
+                  ctx[2 * 256 + ((crc >> 8 ) & 0xFF)] ^
+                  ctx[1 * 256 + ((crc >> 16) & 0xFF)] ^
+                  ctx[0 * 256 + ((crc >> 24)       )];
+        }
+    }
+#endif
+    while (buffer < end)
+        crc = ctx[((uint8_t) crc) ^ *buffer++] ^ (crc >> 8);
+
+    return crc;
+}
diff --git a/media/ffvpx/libavutil/crc.h b/media/ffvpx/libavutil/crc.h
new file mode 100644
index 0000000000..47e22b4c78
--- /dev/null
+++ b/media/ffvpx/libavutil/crc.h
@@ -0,0 +1,100 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @ingroup lavu_crc32
+ * Public header for CRC hash function implementation.
+ */
+
+#ifndef AVUTIL_CRC_H
+#define AVUTIL_CRC_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include "attributes.h"
+#include "version.h"
+
+/**
+ * @defgroup lavu_crc32 CRC
+ * @ingroup lavu_hash
+ * CRC (Cyclic Redundancy Check) hash function implementation.
+ *
+ * This module supports numerous CRC polynomials, in addition to the most
+ * widely used CRC-32-IEEE. See @ref AVCRCId for a list of available
+ * polynomials.
+ *
+ * @{
+ */
+
+typedef uint32_t AVCRC;
+
+typedef enum {
+    AV_CRC_8_ATM,
+    AV_CRC_16_ANSI,
+    AV_CRC_16_CCITT,
+    AV_CRC_32_IEEE,
+    AV_CRC_32_IEEE_LE,  /*< reversed bitorder version of AV_CRC_32_IEEE */
+    AV_CRC_16_ANSI_LE,  /*< reversed bitorder version of AV_CRC_16_ANSI */
+    AV_CRC_24_IEEE,
+    AV_CRC_8_EBU,
+    AV_CRC_MAX,         /*< Not part of public API! Do not use outside libavutil. */
+}AVCRCId;
+
+/**
+ * Initialize a CRC table.
+ * @param ctx must be an array of size sizeof(AVCRC)*257 or sizeof(AVCRC)*1024
+ * @param le If 1, the lowest bit represents the coefficient for the highest
+ *           exponent of the corresponding polynomial (both for poly and
+ *           actual CRC).
+ *           If 0, you must swap the CRC parameter and the result of av_crc
+ *           if you need the standard representation (can be simplified in
+ *           most cases to e.g. bswap16):
+ *           av_bswap32(crc << (32-bits))
+ * @param bits number of bits for the CRC
+ * @param poly generator polynomial without the x**bits coefficient, in the
+ *             representation as specified by le
+ * @param ctx_size size of ctx in bytes
+ * @return <0 on failure
+ */
+int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size);
+
+/**
+ * Get an initialized standard CRC table.
+ * @param crc_id ID of a standard CRC
+ * @return a pointer to the CRC table or NULL on failure
+ */
+const AVCRC *av_crc_get_table(AVCRCId crc_id);
+
+/**
+ * Calculate the CRC of a block.
+ * @param crc CRC of previous blocks if any or initial value for CRC
+ * @return CRC updated with the data from the given block
+ *
+ * @see av_crc_init() "le" parameter
+ */
+uint32_t av_crc(const AVCRC *ctx, uint32_t crc,
+                const uint8_t *buffer, size_t length) av_pure;
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_CRC_H */
diff --git a/media/ffvpx/libavutil/dict.c b/media/ffvpx/libavutil/dict.c
new file mode 100644
index 0000000000..0ea71386e5
--- /dev/null
+++ b/media/ffvpx/libavutil/dict.c
@@ -0,0 +1,272 @@
+/*
+ * copyright (c) 2009 Michael Niedermayer
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <string.h>
+
+#include "avstring.h"
+#include "dict.h"
+#include "internal.h"
+#include "mem.h"
+#include "time_internal.h"
+#include "bprint.h"
+
+struct AVDictionary {
+    int count;
+    AVDictionaryEntry *elems;
+};
+
+int av_dict_count(const AVDictionary *m)
+{
+    return m ? m->count : 0;
+}
+
+AVDictionaryEntry *av_dict_get(const AVDictionary *m, const char *key,
+                               const AVDictionaryEntry *prev, int flags)
+{
+    unsigned int i, j;
+
+    if (!m)
+        return NULL;
+
+    if (prev)
+        i = prev - m->elems + 1;
+    else
+        i = 0;
+
+    for (; i < m->count; i++) {
+        const char *s = m->elems[i].key;
+        if (flags & AV_DICT_MATCH_CASE)
+            for (j = 0; s[j] == key[j] && key[j]; j++)
+                ;
+        else
+            for (j = 0; av_toupper(s[j]) == av_toupper(key[j]) && key[j]; j++)
+                ;
+        if (key[j])
+            continue;
+        if (s[j] && !(flags & AV_DICT_IGNORE_SUFFIX))
+            continue;
+        return &m->elems[i];
+    }
+    return NULL;
+}
+
+int av_dict_set(AVDictionary **pm, const char *key, const char *value,
+                int flags)
+{
+    AVDictionary *m = *pm;
+    AVDictionaryEntry *tag = NULL;
+    char *oldval = NULL, *copy_key = NULL, *copy_value = NULL;
+
+    if (!(flags & AV_DICT_MULTIKEY)) {
+        tag = av_dict_get(m, key, NULL, flags);
+    }
+    if (flags & AV_DICT_DONT_STRDUP_KEY)
+        copy_key = (void *)key;
+    else
+        copy_key = av_strdup(key);
+    if (flags & AV_DICT_DONT_STRDUP_VAL)
+        copy_value = (void *)value;
+    else if (copy_key)
+        copy_value = av_strdup(value);
+    if (!m)
+        m = *pm = av_mallocz(sizeof(*m));
+    if (!m || (key && !copy_key) || (value && !copy_value))
+        goto err_out;
+
+    if (tag) {
+        if (flags & AV_DICT_DONT_OVERWRITE) {
+            av_free(copy_key);
+            av_free(copy_value);
+            return 0;
+        }
+        if (flags & AV_DICT_APPEND)
+            oldval = tag->value;
+        else
+            av_free(tag->value);
+        av_free(tag->key);
+        *tag = m->elems[--m->count];
+    } else if (copy_value) {
+        AVDictionaryEntry *tmp = av_realloc(m->elems,
+                                            (m->count + 1) * sizeof(*m->elems));
+        if (!tmp)
+            goto err_out;
+        m->elems = tmp;
+    }
+    if (copy_value) {
+        m->elems[m->count].key = copy_key;
+        m->elems[m->count].value = copy_value;
+        if (oldval && flags & AV_DICT_APPEND) {
+            size_t len = strlen(oldval) + strlen(copy_value) + 1;
+            char *newval = av_mallocz(len);
+            if (!newval)
+                goto err_out;
+            av_strlcat(newval, oldval, len);
+            av_freep(&oldval);
+            av_strlcat(newval, copy_value, len);
+            m->elems[m->count].value = newval;
+            av_freep(&copy_value);
+        }
+        m->count++;
+    } else {
+        av_freep(&copy_key);
+    }
+    if (!m->count) {
+        av_freep(&m->elems);
+        av_freep(pm);
+    }
+
+    return 0;
+
+err_out:
+    if (m && !m->count) {
+        av_freep(&m->elems);
+        av_freep(pm);
+    }
+    av_free(copy_key);
+    av_free(copy_value);
+    return AVERROR(ENOMEM);
+}
+
+int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value,
+                int flags)
+{
+    char valuestr[22];
+    snprintf(valuestr, sizeof(valuestr), "%"PRId64, value);
+    flags &= ~AV_DICT_DONT_STRDUP_VAL;
+    return av_dict_set(pm, key, valuestr, flags);
+}
+
+static int parse_key_value_pair(AVDictionary **pm, const char **buf,
+                                const char *key_val_sep, const char *pairs_sep,
+                                int flags)
+{
+    char *key = av_get_token(buf, key_val_sep);
+    char *val = NULL;
+    int ret;
+
+    if (key && *key && strspn(*buf, key_val_sep)) {
+        (*buf)++;
+        val = av_get_token(buf, pairs_sep);
+    }
+
+    if (key && *key && val && *val)
+        ret = av_dict_set(pm, key, val, flags);
+    else
+        ret = AVERROR(EINVAL);
+
+    av_freep(&key);
+    av_freep(&val);
+
+    return ret;
+}
+
+int av_dict_parse_string(AVDictionary **pm, const char *str,
+                         const char *key_val_sep, const char *pairs_sep,
+                         int flags)
+{
+    int ret;
+
+    if (!str)
+        return 0;
+
+    /* ignore STRDUP flags */
+    flags &= ~(AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
+
+    while (*str) {
+        if ((ret = parse_key_value_pair(pm, &str, key_val_sep, pairs_sep, flags)) < 0)
+            return ret;
+
+        if (*str)
+            str++;
+    }
+
+    return 0;
+}
+
+void av_dict_free(AVDictionary **pm)
+{
+    AVDictionary *m = *pm;
+
+    if (m) {
+        while (m->count--) {
+            av_freep(&m->elems[m->count].key);
+            av_freep(&m->elems[m->count].value);
+        }
+        av_freep(&m->elems);
+    }
+    av_freep(pm);
+}
+
+int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
+{
+    AVDictionaryEntry *t = NULL;
+
+    while ((t = av_dict_get(src, "", t, AV_DICT_IGNORE_SUFFIX))) {
+        int ret = av_dict_set(dst, t->key, t->value, flags);
+        if (ret < 0)
+            return ret;
+    }
+
+    return 0;
+}
+
+int av_dict_get_string(const AVDictionary *m, char **buffer,
+                       const char key_val_sep, const char pairs_sep)
+{
+    AVDictionaryEntry *t = NULL;
+    AVBPrint bprint;
+    int cnt = 0;
+    char special_chars[] = {pairs_sep, key_val_sep, '\0'};
+
+    if (!buffer || pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
+        pairs_sep == '\\' || key_val_sep == '\\')
+        return AVERROR(EINVAL);
+
+    if (!av_dict_count(m)) {
+        *buffer = av_strdup("");
+        return *buffer ? 0 : AVERROR(ENOMEM);
+    }
+
+    av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
+    while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
+        if (cnt++)
+            av_bprint_append_data(&bprint, &pairs_sep, 1);
+        av_bprint_escape(&bprint, t->key, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
+        av_bprint_append_data(&bprint, &key_val_sep, 1);
+        av_bprint_escape(&bprint, t->value, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
+    }
+    return av_bprint_finalize(&bprint, buffer);
+}
+
+int avpriv_dict_set_timestamp(AVDictionary **dict, const char *key, int64_t timestamp)
+{
+    time_t seconds = timestamp / 1000000;
+    struct tm *ptm, tmbuf;
+    ptm = gmtime_r(&seconds, &tmbuf);
+    if (ptm) {
+        char buf[32];
+        if (!strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", ptm))
+            return AVERROR_EXTERNAL;
+        av_strlcatf(buf, sizeof(buf), ".%06dZ", (int)(timestamp % 1000000));
+        return av_dict_set(dict, key, buf, 0);
+    } else {
+        return AVERROR_EXTERNAL;
+    }
+}
diff --git a/media/ffvpx/libavutil/dict.h b/media/ffvpx/libavutil/dict.h
new file mode 100644
index 0000000000..118f1f00ed
--- /dev/null
+++ b/media/ffvpx/libavutil/dict.h
@@ -0,0 +1,200 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Public dictionary API.
+ * @deprecated
+ *  AVDictionary is provided for compatibility with libav. It is both in
+ *  implementation as well as API inefficient. It does not scale and is
+ *  extremely slow with large dictionaries.
+ *  It is recommended that new code uses our tree container from tree.c/h
+ *  where applicable, which uses AVL trees to achieve O(log n) performance.
+ */
+
+#ifndef AVUTIL_DICT_H
+#define AVUTIL_DICT_H
+
+#include <stdint.h>
+
+#include "version.h"
+
+/**
+ * @addtogroup lavu_dict AVDictionary
+ * @ingroup lavu_data
+ *
+ * @brief Simple key:value store
+ *
+ * @{
+ * Dictionaries are used for storing key:value pairs. To create
+ * an AVDictionary, simply pass an address of a NULL pointer to
+ * av_dict_set(). NULL can be used as an empty dictionary wherever
+ * a pointer to an AVDictionary is required.
+ * Use av_dict_get() to retrieve an entry or iterate over all
+ * entries and finally av_dict_free() to free the dictionary
+ * and all its contents.
+ *
+ @code
+   AVDictionary *d = NULL;           // "create" an empty dictionary
+   AVDictionaryEntry *t = NULL;
+
+   av_dict_set(&d, "foo", "bar", 0); // add an entry
+
+   char *k = av_strdup("key");       // if your strings are already allocated,
+   char *v = av_strdup("value");     // you can avoid copying them like this
+   av_dict_set(&d, k, v, AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
+
+   while (t = av_dict_get(d, "", t, AV_DICT_IGNORE_SUFFIX)) {
+       <....>                             // iterate over all entries in d
+   }
+   av_dict_free(&d);
+ @endcode
+ */
+
+#define AV_DICT_MATCH_CASE      1   /**< Only get an entry with exact-case key match. Only relevant in av_dict_get(). */
+#define AV_DICT_IGNORE_SUFFIX   2   /**< Return first entry in a dictionary whose first part corresponds to the search key,
+                                         ignoring the suffix of the found key string. Only relevant in av_dict_get(). */
+#define AV_DICT_DONT_STRDUP_KEY 4   /**< Take ownership of a key that's been
+                                         allocated with av_malloc() or another memory allocation function. */
+#define AV_DICT_DONT_STRDUP_VAL 8   /**< Take ownership of a value that's been
+                                         allocated with av_malloc() or another memory allocation function. */
+#define AV_DICT_DONT_OVERWRITE 16   ///< Don't overwrite existing entries.
+#define AV_DICT_APPEND         32   /**< If the entry already exists, append to it.  Note that no
+                                      delimiter is added, the strings are simply concatenated. */
+#define AV_DICT_MULTIKEY       64   /**< Allow to store several equal keys in the dictionary */
+
+typedef struct AVDictionaryEntry {
+    char *key;
+    char *value;
+} AVDictionaryEntry;
+
+typedef struct AVDictionary AVDictionary;
+
+/**
+ * Get a dictionary entry with matching key.
+ *
+ * The returned entry key or value must not be changed, or it will
+ * cause undefined behavior.
+ *
+ * To iterate through all the dictionary entries, you can set the matching key
+ * to the null string "" and set the AV_DICT_IGNORE_SUFFIX flag.
+ *
+ * @param prev Set to the previous matching element to find the next.
+ *             If set to NULL the first matching element is returned.
+ * @param key matching key
+ * @param flags a collection of AV_DICT_* flags controlling how the entry is retrieved
+ * @return found entry or NULL in case no matching entry was found in the dictionary
+ */
+AVDictionaryEntry *av_dict_get(const AVDictionary *m, const char *key,
+                               const AVDictionaryEntry *prev, int flags);
+
+/**
+ * Get number of entries in dictionary.
+ *
+ * @param m dictionary
+ * @return  number of entries in dictionary
+ */
+int av_dict_count(const AVDictionary *m);
+
+/**
+ * Set the given entry in *pm, overwriting an existing entry.
+ *
+ * Note: If AV_DICT_DONT_STRDUP_KEY or AV_DICT_DONT_STRDUP_VAL is set,
+ * these arguments will be freed on error.
+ *
+ * Warning: Adding a new entry to a dictionary invalidates all existing entries
+ * previously returned with av_dict_get.
+ *
+ * @param pm pointer to a pointer to a dictionary struct. If *pm is NULL
+ * a dictionary struct is allocated and put in *pm.
+ * @param key entry key to add to *pm (will either be av_strduped or added as a new key depending on flags)
+ * @param value entry value to add to *pm (will be av_strduped or added as a new key depending on flags).
+ *        Passing a NULL value will cause an existing entry to be deleted.
+ * @return >= 0 on success otherwise an error code <0
+ */
+int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags);
+
+/**
+ * Convenience wrapper for av_dict_set that converts the value to a string
+ * and stores it.
+ *
+ * Note: If AV_DICT_DONT_STRDUP_KEY is set, key will be freed on error.
+ */
+int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags);
+
+/**
+ * Parse the key/value pairs list and add the parsed entries to a dictionary.
+ *
+ * In case of failure, all the successfully set entries are stored in
+ * *pm. You may need to manually free the created dictionary.
+ *
+ * @param key_val_sep  a 0-terminated list of characters used to separate
+ *                     key from value
+ * @param pairs_sep    a 0-terminated list of characters used to separate
+ *                     two pairs from each other
+ * @param flags        flags to use when adding to dictionary.
+ *                     AV_DICT_DONT_STRDUP_KEY and AV_DICT_DONT_STRDUP_VAL
+ *                     are ignored since the key/value tokens will always
+ *                     be duplicated.
+ * @return             0 on success, negative AVERROR code on failure
+ */
+int av_dict_parse_string(AVDictionary **pm, const char *str,
+                         const char *key_val_sep, const char *pairs_sep,
+                         int flags);
+
+/**
+ * Copy entries from one AVDictionary struct into another.
+ * @param dst pointer to a pointer to a AVDictionary struct. If *dst is NULL,
+ *            this function will allocate a struct for you and put it in *dst
+ * @param src pointer to source AVDictionary struct
+ * @param flags flags to use when setting entries in *dst
+ * @note metadata is read using the AV_DICT_IGNORE_SUFFIX flag
+ * @return 0 on success, negative AVERROR code on failure. If dst was allocated
+ *           by this function, callers should free the associated memory.
+ */
+int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags);
+
+/**
+ * Free all the memory allocated for an AVDictionary struct
+ * and all keys and values.
+ */
+void av_dict_free(AVDictionary **m);
+
+/**
+ * Get dictionary entries as a string.
+ *
+ * Create a string containing dictionary's entries.
+ * Such string may be passed back to av_dict_parse_string().
+ * @note String is escaped with backslashes ('\').
+ *
+ * @param[in]  m             dictionary
+ * @param[out] buffer        Pointer to buffer that will be allocated with string containg entries.
+ *                           Buffer must be freed by the caller when is no longer needed.
+ * @param[in]  key_val_sep   character used to separate key from value
+ * @param[in]  pairs_sep     character used to separate two pairs from each other
+ * @return                   >= 0 on success, negative on error
+ * @warning Separators cannot be neither '\\' nor '\0'. They also cannot be the same.
+ */
+int av_dict_get_string(const AVDictionary *m, char **buffer,
+                       const char key_val_sep, const char pairs_sep);
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_DICT_H */
diff --git a/media/ffvpx/libavutil/dynarray.h b/media/ffvpx/libavutil/dynarray.h
new file mode 100644
index 0000000000..3a7e146422
--- /dev/null
+++ b/media/ffvpx/libavutil/dynarray.h
@@ -0,0 +1,70 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_DYNARRAY_H
+#define AVUTIL_DYNARRAY_H
+
+#include "log.h"
+#include "mem.h"
+
+/**
+ * Add an element to a dynamic array.
+ *
+ * The array is reallocated when its number of elements reaches powers of 2.
+ * Therefore, the amortized cost of adding an element is constant.
+ *
+ * In case of success, the pointer to the array is updated in order to
+ * point to the new grown array, and the size is incremented.
+ *
+ * @param av_size_max  maximum size of the array, usually the MAX macro of
+ *                     the type of the size
+ * @param av_elt_size  size of the elements in the array, in bytes
+ * @param av_array     pointer to the array, must be a lvalue
+ * @param av_size      size of the array, must be an integer lvalue
+ * @param av_success   statement to execute on success; at this point, the
+ *                     size variable is not yet incremented
+ * @param av_failure   statement to execute on failure; if this happens, the
+ *                     array and size are not changed; the statement can end
+ *                     with a return or a goto
+ */
+#define FF_DYNARRAY_ADD(av_size_max, av_elt_size, av_array, av_size, \
+                        av_success, av_failure) \
+    do { \
+        size_t av_size_new = (av_size); \
+        if (!((av_size) & ((av_size) - 1))) { \
+            av_size_new = (av_size) ? (av_size) << 1 : 1; \
+            if (av_size_new > (av_size_max) / (av_elt_size)) { \
+                av_size_new = 0; \
+            } else { \
+                void *av_array_new = \
+                    av_realloc((av_array), av_size_new * (av_elt_size)); \
+                if (!av_array_new) \
+                    av_size_new = 0; \
+                else \
+                    (av_array) = av_array_new; \
+            } \
+        } \
+        if (av_size_new) { \
+            { av_success } \
+            (av_size)++; \
+        } else { \
+            av_failure \
+        } \
+    } while (0)
+
+#endif /* AVUTIL_DYNARRAY_H */
diff --git a/media/ffvpx/libavutil/error.c b/media/ffvpx/libavutil/error.c
new file mode 100644
index 0000000000..b96304837b
--- /dev/null
+++ b/media/ffvpx/libavutil/error.c
@@ -0,0 +1,129 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#undef _GNU_SOURCE
+#define _XOPEN_SOURCE 600 /* XSI-compliant version of strerror_r */
+#include "avutil.h"
+#include "avstring.h"
+#include "common.h"
+
+struct error_entry {
+    int num;
+    const char *tag;
+    const char *str;
+};
+
+#define ERROR_TAG(tag) AVERROR_##tag, #tag
+#define EERROR_TAG(tag) AVERROR(tag), #tag
+#define AVERROR_INPUT_AND_OUTPUT_CHANGED (AVERROR_INPUT_CHANGED | AVERROR_OUTPUT_CHANGED)
+static const struct error_entry error_entries[] = {
+    { ERROR_TAG(BSF_NOT_FOUND),      "Bitstream filter not found"                     },
+    { ERROR_TAG(BUG),                "Internal bug, should not have happened"         },
+    { ERROR_TAG(BUG2),               "Internal bug, should not have happened"         },
+    { ERROR_TAG(BUFFER_TOO_SMALL),   "Buffer too small"                               },
+    { ERROR_TAG(DECODER_NOT_FOUND),  "Decoder not found"                              },
+    { ERROR_TAG(DEMUXER_NOT_FOUND),  "Demuxer not found"                              },
+    { ERROR_TAG(ENCODER_NOT_FOUND),  "Encoder not found"                              },
+    { ERROR_TAG(EOF),                "End of file"                                    },
+    { ERROR_TAG(EXIT),               "Immediate exit requested"                       },
+    { ERROR_TAG(EXTERNAL),           "Generic error in an external library"           },
+    { ERROR_TAG(FILTER_NOT_FOUND),   "Filter not found"                               },
+    { ERROR_TAG(INPUT_CHANGED),      "Input changed"                                  },
+    { ERROR_TAG(INVALIDDATA),        "Invalid data found when processing input"       },
+    { ERROR_TAG(MUXER_NOT_FOUND),    "Muxer not found"                                },
+    { ERROR_TAG(OPTION_NOT_FOUND),   "Option not found"                               },
+    { ERROR_TAG(OUTPUT_CHANGED),     "Output changed"                                 },
+    { ERROR_TAG(PATCHWELCOME),       "Not yet implemented in FFmpeg, patches welcome" },
+    { ERROR_TAG(PROTOCOL_NOT_FOUND), "Protocol not found"                             },
+    { ERROR_TAG(STREAM_NOT_FOUND),   "Stream not found"                               },
+    { ERROR_TAG(UNKNOWN),            "Unknown error occurred"                         },
+    { ERROR_TAG(EXPERIMENTAL),       "Experimental feature"                           },
+    { ERROR_TAG(INPUT_AND_OUTPUT_CHANGED), "Input and output changed"                 },
+    { ERROR_TAG(HTTP_BAD_REQUEST),   "Server returned 400 Bad Request"         },
+    { ERROR_TAG(HTTP_UNAUTHORIZED),  "Server returned 401 Unauthorized (authorization failed)" },
+    { ERROR_TAG(HTTP_FORBIDDEN),     "Server returned 403 Forbidden (access denied)" },
+    { ERROR_TAG(HTTP_NOT_FOUND),     "Server returned 404 Not Found"           },
+    { ERROR_TAG(HTTP_OTHER_4XX),     "Server returned 4XX Client Error, but not one of 40{0,1,3,4}" },
+    { ERROR_TAG(HTTP_SERVER_ERROR),  "Server returned 5XX Server Error reply" },
+#if !HAVE_STRERROR_R
+    { EERROR_TAG(E2BIG),             "Argument list too long" },
+    { EERROR_TAG(EACCES),            "Permission denied" },
+    { EERROR_TAG(EAGAIN),            "Resource temporarily unavailable" },
+    { EERROR_TAG(EBADF),             "Bad file descriptor" },
+    { EERROR_TAG(EBUSY),             "Device or resource busy" },
+    { EERROR_TAG(ECHILD),            "No child processes" },
+    { EERROR_TAG(EDEADLK),           "Resource deadlock avoided" },
+    { EERROR_TAG(EDOM),              "Numerical argument out of domain" },
+    { EERROR_TAG(EEXIST),            "File exists" },
+    { EERROR_TAG(EFAULT),            "Bad address" },
+    { EERROR_TAG(EFBIG),             "File too large" },
+    { EERROR_TAG(EILSEQ),            "Illegal byte sequence" },
+    { EERROR_TAG(EINTR),             "Interrupted system call" },
+    { EERROR_TAG(EINVAL),            "Invalid argument" },
+    { EERROR_TAG(EIO),               "I/O error" },
+    { EERROR_TAG(EISDIR),            "Is a directory" },
+    { EERROR_TAG(EMFILE),            "Too many open files" },
+    { EERROR_TAG(EMLINK),            "Too many links" },
+    { EERROR_TAG(ENAMETOOLONG),      "File name too long" },
+    { EERROR_TAG(ENFILE),            "Too many open files in system" },
+    { EERROR_TAG(ENODEV),            "No such device" },
+    { EERROR_TAG(ENOENT),            "No such file or directory" },
+    { EERROR_TAG(ENOEXEC),           "Exec format error" },
+    { EERROR_TAG(ENOLCK),            "No locks available" },
+    { EERROR_TAG(ENOMEM),            "Cannot allocate memory" },
+    { EERROR_TAG(ENOSPC),            "No space left on device" },
+    { EERROR_TAG(ENOSYS),            "Function not implemented" },
+    { EERROR_TAG(ENOTDIR),           "Not a directory" },
+    { EERROR_TAG(ENOTEMPTY),         "Directory not empty" },
+    { EERROR_TAG(ENOTTY),            "Inappropriate I/O control operation" },
+    { EERROR_TAG(ENXIO),             "No such device or address" },
+    { EERROR_TAG(EPERM),             "Operation not permitted" },
+    { EERROR_TAG(EPIPE),             "Broken pipe" },
+    { EERROR_TAG(ERANGE),            "Result too large" },
+    { EERROR_TAG(EROFS),             "Read-only file system" },
+    { EERROR_TAG(ESPIPE),            "Illegal seek" },
+    { EERROR_TAG(ESRCH),             "No such process" },
+    { EERROR_TAG(EXDEV),             "Cross-device link" },
+#endif
+};
+
+int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
+{
+    int ret = 0, i;
+    const struct error_entry *entry = NULL;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) {
+        if (errnum == error_entries[i].num) {
+            entry = &error_entries[i];
+            break;
+        }
+    }
+    if (entry) {
+        av_strlcpy(errbuf, entry->str, errbuf_size);
+    } else {
+#if HAVE_STRERROR_R
+        ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size));
+#else
+        ret = -1;
+#endif
+        if (ret < 0)
+            snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
+    }
+
+    return ret;
+}
diff --git a/media/ffvpx/libavutil/error.h b/media/ffvpx/libavutil/error.h
new file mode 100644
index 0000000000..71df4da353
--- /dev/null
+++ b/media/ffvpx/libavutil/error.h
@@ -0,0 +1,126 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * error code definitions
+ */
+
+#ifndef AVUTIL_ERROR_H
+#define AVUTIL_ERROR_H
+
+#include <errno.h>
+#include <stddef.h>
+
+/**
+ * @addtogroup lavu_error
+ *
+ * @{
+ */
+
+
+/* error handling */
+#if EDOM > 0
+#define AVERROR(e) (-(e))   ///< Returns a negative error code from a POSIX error code, to return from library functions.
+#define AVUNERROR(e) (-(e)) ///< Returns a POSIX error code from a library function error return value.
+#else
+/* Some platforms have E* and errno already negated. */
+#define AVERROR(e) (e)
+#define AVUNERROR(e) (e)
+#endif
+
+#define FFERRTAG(a, b, c, d) (-(int)MKTAG(a, b, c, d))
+
+#define AVERROR_BSF_NOT_FOUND      FFERRTAG(0xF8,'B','S','F') ///< Bitstream filter not found
+#define AVERROR_BUG                FFERRTAG( 'B','U','G','!') ///< Internal bug, also see AVERROR_BUG2
+#define AVERROR_BUFFER_TOO_SMALL   FFERRTAG( 'B','U','F','S') ///< Buffer too small
+#define AVERROR_DECODER_NOT_FOUND  FFERRTAG(0xF8,'D','E','C') ///< Decoder not found
+#define AVERROR_DEMUXER_NOT_FOUND  FFERRTAG(0xF8,'D','E','M') ///< Demuxer not found
+#define AVERROR_ENCODER_NOT_FOUND  FFERRTAG(0xF8,'E','N','C') ///< Encoder not found
+#define AVERROR_EOF                FFERRTAG( 'E','O','F',' ') ///< End of file
+#define AVERROR_EXIT               FFERRTAG( 'E','X','I','T') ///< Immediate exit was requested; the called function should not be restarted
+#define AVERROR_EXTERNAL           FFERRTAG( 'E','X','T',' ') ///< Generic error in an external library
+#define AVERROR_FILTER_NOT_FOUND   FFERRTAG(0xF8,'F','I','L') ///< Filter not found
+#define AVERROR_INVALIDDATA        FFERRTAG( 'I','N','D','A') ///< Invalid data found when processing input
+#define AVERROR_MUXER_NOT_FOUND    FFERRTAG(0xF8,'M','U','X') ///< Muxer not found
+#define AVERROR_OPTION_NOT_FOUND   FFERRTAG(0xF8,'O','P','T') ///< Option not found
+#define AVERROR_PATCHWELCOME       FFERRTAG( 'P','A','W','E') ///< Not yet implemented in FFmpeg, patches welcome
+#define AVERROR_PROTOCOL_NOT_FOUND FFERRTAG(0xF8,'P','R','O') ///< Protocol not found
+
+#define AVERROR_STREAM_NOT_FOUND   FFERRTAG(0xF8,'S','T','R') ///< Stream not found
+/**
+ * This is semantically identical to AVERROR_BUG
+ * it has been introduced in Libav after our AVERROR_BUG and with a modified value.
+ */
+#define AVERROR_BUG2               FFERRTAG( 'B','U','G',' ')
+#define AVERROR_UNKNOWN            FFERRTAG( 'U','N','K','N') ///< Unknown error, typically from an external library
+#define AVERROR_EXPERIMENTAL       (-0x2bb2afa8) ///< Requested feature is flagged experimental. Set strict_std_compliance if you really want to use it.
+#define AVERROR_INPUT_CHANGED      (-0x636e6701) ///< Input changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_OUTPUT_CHANGED)
+#define AVERROR_OUTPUT_CHANGED     (-0x636e6702) ///< Output changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_INPUT_CHANGED)
+/* HTTP & RTSP errors */
+#define AVERROR_HTTP_BAD_REQUEST   FFERRTAG(0xF8,'4','0','0')
+#define AVERROR_HTTP_UNAUTHORIZED  FFERRTAG(0xF8,'4','0','1')
+#define AVERROR_HTTP_FORBIDDEN     FFERRTAG(0xF8,'4','0','3')
+#define AVERROR_HTTP_NOT_FOUND     FFERRTAG(0xF8,'4','0','4')
+#define AVERROR_HTTP_OTHER_4XX     FFERRTAG(0xF8,'4','X','X')
+#define AVERROR_HTTP_SERVER_ERROR  FFERRTAG(0xF8,'5','X','X')
+
+#define AV_ERROR_MAX_STRING_SIZE 64
+
+/**
+ * Put a description of the AVERROR code errnum in errbuf.
+ * In case of failure the global variable errno is set to indicate the
+ * error. Even in case of failure av_strerror() will print a generic
+ * error message indicating the errnum provided to errbuf.
+ *
+ * @param errnum      error code to describe
+ * @param errbuf      buffer to which description is written
+ * @param errbuf_size the size in bytes of errbuf
+ * @return 0 on success, a negative value if a description for errnum
+ * cannot be found
+ */
+int av_strerror(int errnum, char *errbuf, size_t errbuf_size);
+
+/**
+ * Fill the provided buffer with a string containing an error string
+ * corresponding to the AVERROR code errnum.
+ *
+ * @param errbuf         a buffer
+ * @param errbuf_size    size in bytes of errbuf
+ * @param errnum         error code to describe
+ * @return the buffer in input, filled with the error description
+ * @see av_strerror()
+ */
+static inline char *av_make_error_string(char *errbuf, size_t errbuf_size, int errnum)
+{
+    av_strerror(errnum, errbuf, errbuf_size);
+    return errbuf;
+}
+
+/**
+ * Convenience macro, the return value should be used only directly in
+ * function arguments but never stand-alone.
+ */
+#define av_err2str(errnum) \
+    av_make_error_string((char[AV_ERROR_MAX_STRING_SIZE]){0}, AV_ERROR_MAX_STRING_SIZE, errnum)
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_ERROR_H */
diff --git a/media/ffvpx/libavutil/eval.c b/media/ffvpx/libavutil/eval.c
new file mode 100644
index 0000000000..efed91b6ea
--- /dev/null
+++ b/media/ffvpx/libavutil/eval.c
@@ -0,0 +1,760 @@
+/*
+ * Copyright (c) 2002-2006 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * simple arithmetic expression evaluator.
+ *
+ * see http://joe.hotchkiss.com/programming/eval/eval.html
+ */
+
+#include <float.h>
+#include "attributes.h"
+#include "avutil.h"
+#include "common.h"
+#include "eval.h"
+#include "ffmath.h"
+#include "internal.h"
+#include "log.h"
+#include "mathematics.h"
+#include "fftime.h"
+#include "avstring.h"
+#include "timer.h"
+#include "reverse.h"
+
+typedef struct Parser {
+    const AVClass *class;
+    int stack_index;
+    char *s;
+    const double *const_values;
+    const char * const *const_names;          // NULL terminated
+    double (* const *funcs1)(void *, double a);           // NULL terminated
+    const char * const *func1_names;          // NULL terminated
+    double (* const *funcs2)(void *, double a, double b); // NULL terminated
+    const char * const *func2_names;          // NULL terminated
+    void *opaque;
+    int log_offset;
+    void *log_ctx;
+#define VARS 10
+    double *var;
+} Parser;
+
+static const AVClass eval_class = {
+    .class_name                = "Eval",
+    .item_name                 = av_default_item_name,
+    .option                    = NULL,
+    .version                   = LIBAVUTIL_VERSION_INT,
+    .log_level_offset_offset   = offsetof(Parser, log_offset),
+    .parent_log_context_offset = offsetof(Parser, log_ctx),
+};
+
+static const struct {
+    double bin_val;
+    double dec_val;
+    int8_t exp;
+} si_prefixes['z' - 'E' + 1] = {
+    ['y'-'E']= { 8.271806125530276749e-25, 1e-24, -24 },
+    ['z'-'E']= { 8.4703294725430034e-22, 1e-21, -21 },
+    ['a'-'E']= { 8.6736173798840355e-19, 1e-18, -18 },
+    ['f'-'E']= { 8.8817841970012523e-16, 1e-15, -15 },
+    ['p'-'E']= { 9.0949470177292824e-13, 1e-12, -12 },
+    ['n'-'E']= { 9.3132257461547852e-10, 1e-9,  -9 },
+    ['u'-'E']= { 9.5367431640625e-7, 1e-6, -6 },
+    ['m'-'E']= { 9.765625e-4, 1e-3, -3 },
+    ['c'-'E']= { 9.8431332023036951e-3, 1e-2, -2 },
+    ['d'-'E']= { 9.921256574801246e-2, 1e-1, -1 },
+    ['h'-'E']= { 1.0159366732596479e2, 1e2, 2 },
+    ['k'-'E']= { 1.024e3, 1e3, 3 },
+    ['K'-'E']= { 1.024e3, 1e3, 3 },
+    ['M'-'E']= { 1.048576e6, 1e6, 6 },
+    ['G'-'E']= { 1.073741824e9, 1e9, 9 },
+    ['T'-'E']= { 1.099511627776e12, 1e12, 12 },
+    ['P'-'E']= { 1.125899906842624e15, 1e15, 15 },
+    ['E'-'E']= { 1.152921504606847e18, 1e18, 18 },
+    ['Z'-'E']= { 1.1805916207174113e21, 1e21, 21 },
+    ['Y'-'E']= { 1.2089258196146292e24, 1e24, 24 },
+};
+
+static const struct {
+    const char *name;
+    double value;
+} constants[] = {
+    { "E",   M_E   },
+    { "PI",  M_PI  },
+    { "PHI", M_PHI },
+    { "QP2LAMBDA", FF_QP2LAMBDA },
+};
+
+double av_strtod(const char *numstr, char **tail)
+{
+    double d;
+    char *next;
+    if(numstr[0]=='0' && (numstr[1]|0x20)=='x') {
+        d = strtoul(numstr, &next, 16);
+    } else
+        d = strtod(numstr, &next);
+    /* if parsing succeeded, check for and interpret postfixes */
+    if (next!=numstr) {
+        if (next[0] == 'd' && next[1] == 'B') {
+            /* treat dB as decibels instead of decibytes */
+            d = ff_exp10(d / 20);
+            next += 2;
+        } else if (*next >= 'E' && *next <= 'z') {
+            int e= si_prefixes[*next - 'E'].exp;
+            if (e) {
+                if (next[1] == 'i') {
+                    d*= si_prefixes[*next - 'E'].bin_val;
+                    next+=2;
+                } else {
+                    d*= si_prefixes[*next - 'E'].dec_val;
+                    next++;
+                }
+            }
+        }
+
+        if (*next=='B') {
+            d*=8;
+            next++;
+        }
+    }
+    /* if requested, fill in tail with the position after the last parsed
+       character */
+    if (tail)
+        *tail = next;
+    return d;
+}
+
+#define IS_IDENTIFIER_CHAR(c) ((c) - '0' <= 9U || (c) - 'a' <= 25U || (c) - 'A' <= 25U || (c) == '_')
+
+static int strmatch(const char *s, const char *prefix)
+{
+    int i;
+    for (i=0; prefix[i]; i++) {
+        if (prefix[i] != s[i]) return 0;
+    }
+    /* return 1 only if the s identifier is terminated */
+    return !IS_IDENTIFIER_CHAR(s[i]);
+}
+
+struct AVExpr {
+    enum {
+        e_value, e_const, e_func0, e_func1, e_func2,
+        e_squish, e_gauss, e_ld, e_isnan, e_isinf,
+        e_mod, e_max, e_min, e_eq, e_gt, e_gte, e_lte, e_lt,
+        e_pow, e_mul, e_div, e_add,
+        e_last, e_st, e_while, e_taylor, e_root, e_floor, e_ceil, e_trunc, e_round,
+        e_sqrt, e_not, e_random, e_hypot, e_gcd,
+        e_if, e_ifnot, e_print, e_bitand, e_bitor, e_between, e_clip, e_atan2, e_lerp,
+    } type;
+    double value; // is sign in other types
+    union {
+        int const_index;
+        double (*func0)(double);
+        double (*func1)(void *, double);
+        double (*func2)(void *, double, double);
+    } a;
+    struct AVExpr *param[3];
+    double *var;
+};
+
+static double etime(double v)
+{
+    return av_gettime() * 0.000001;
+}
+
+static double eval_expr(Parser *p, AVExpr *e)
+{
+    switch (e->type) {
+        case e_value:  return e->value;
+        case e_const:  return e->value * p->const_values[e->a.const_index];
+        case e_func0:  return e->value * e->a.func0(eval_expr(p, e->param[0]));
+        case e_func1:  return e->value * e->a.func1(p->opaque, eval_expr(p, e->param[0]));
+        case e_func2:  return e->value * e->a.func2(p->opaque, eval_expr(p, e->param[0]), eval_expr(p, e->param[1]));
+        case e_squish: return 1/(1+exp(4*eval_expr(p, e->param[0])));
+        case e_gauss: { double d = eval_expr(p, e->param[0]); return exp(-d*d/2)/sqrt(2*M_PI); }
+        case e_ld:     return e->value * p->var[av_clip(eval_expr(p, e->param[0]), 0, VARS-1)];
+        case e_isnan:  return e->value * !!isnan(eval_expr(p, e->param[0]));
+        case e_isinf:  return e->value * !!isinf(eval_expr(p, e->param[0]));
+        case e_floor:  return e->value * floor(eval_expr(p, e->param[0]));
+        case e_ceil :  return e->value * ceil (eval_expr(p, e->param[0]));
+        case e_trunc:  return e->value * trunc(eval_expr(p, e->param[0]));
+        case e_round:  return e->value * round(eval_expr(p, e->param[0]));
+        case e_sqrt:   return e->value * sqrt (eval_expr(p, e->param[0]));
+        case e_not:    return e->value * (eval_expr(p, e->param[0]) == 0);
+        case e_if:     return e->value * (eval_expr(p, e->param[0]) ? eval_expr(p, e->param[1]) :
+                                          e->param[2] ? eval_expr(p, e->param[2]) : 0);
+        case e_ifnot:  return e->value * (!eval_expr(p, e->param[0]) ? eval_expr(p, e->param[1]) :
+                                          e->param[2] ? eval_expr(p, e->param[2]) : 0);
+        case e_clip: {
+            double x = eval_expr(p, e->param[0]);
+            double min = eval_expr(p, e->param[1]), max = eval_expr(p, e->param[2]);
+            if (isnan(min) || isnan(max) || isnan(x) || min > max)
+                return NAN;
+            return e->value * av_clipd(eval_expr(p, e->param[0]), min, max);
+        }
+        case e_between: {
+            double d = eval_expr(p, e->param[0]);
+            return e->value * (d >= eval_expr(p, e->param[1]) &&
+                               d <= eval_expr(p, e->param[2]));
+        }
+        case e_lerp: {
+            double v0 = eval_expr(p, e->param[0]);
+            double v1 = eval_expr(p, e->param[1]);
+            double f  = eval_expr(p, e->param[2]);
+            return v0 + (v1 - v0) * f;
+        }
+        case e_print: {
+            double x = eval_expr(p, e->param[0]);
+            int level = e->param[1] ? av_clip(eval_expr(p, e->param[1]), INT_MIN, INT_MAX) : AV_LOG_INFO;
+            av_log(p, level, "%f\n", x);
+            return x;
+        }
+        case e_random:{
+            int idx= av_clip(eval_expr(p, e->param[0]), 0, VARS-1);
+            uint64_t r= isnan(p->var[idx]) ? 0 : p->var[idx];
+            r= r*1664525+1013904223;
+            p->var[idx]= r;
+            return e->value * (r * (1.0/UINT64_MAX));
+        }
+        case e_while: {
+            double d = NAN;
+            while (eval_expr(p, e->param[0]))
+                d=eval_expr(p, e->param[1]);
+            return d;
+        }
+        case e_taylor: {
+            double t = 1, d = 0, v;
+            double x = eval_expr(p, e->param[1]);
+            int id = e->param[2] ? av_clip(eval_expr(p, e->param[2]), 0, VARS-1) : 0;
+            int i;
+            double var0 = p->var[id];
+            for(i=0; i<1000; i++) {
+                double ld = d;
+                p->var[id] = i;
+                v = eval_expr(p, e->param[0]);
+                d += t*v;
+                if(ld==d && v)
+                    break;
+                t *= x / (i+1);
+            }
+            p->var[id] = var0;
+            return d;
+        }
+        case e_root: {
+            int i, j;
+            double low = -1, high = -1, v, low_v = -DBL_MAX, high_v = DBL_MAX;
+            double var0 = p->var[0];
+            double x_max = eval_expr(p, e->param[1]);
+            for(i=-1; i<1024; i++) {
+                if(i<255) {
+                    p->var[0] = ff_reverse[i&255]*x_max/255;
+                } else {
+                    p->var[0] = x_max*pow(0.9, i-255);
+                    if (i&1) p->var[0] *= -1;
+                    if (i&2) p->var[0] += low;
+                    else     p->var[0] += high;
+                }
+                v = eval_expr(p, e->param[0]);
+                if (v<=0 && v>low_v) {
+                    low    = p->var[0];
+                    low_v  = v;
+                }
+                if (v>=0 && v<high_v) {
+                    high   = p->var[0];
+                    high_v = v;
+                }
+                if (low>=0 && high>=0){
+                    for (j=0; j<1000; j++) {
+                        p->var[0] = (low+high)*0.5;
+                        if (low == p->var[0] || high == p->var[0])
+                            break;
+                        v = eval_expr(p, e->param[0]);
+                        if (v<=0) low = p->var[0];
+                        if (v>=0) high= p->var[0];
+                        if (isnan(v)) {
+                            low = high = v;
+                            break;
+                        }
+                    }
+                    break;
+                }
+            }
+            p->var[0] = var0;
+            return -low_v<high_v ? low : high;
+        }
+        default: {
+            double d = eval_expr(p, e->param[0]);
+            double d2 = eval_expr(p, e->param[1]);
+            switch (e->type) {
+                case e_mod: return e->value * (d - floor((!CONFIG_FTRAPV || d2) ? d / d2 : d * INFINITY) * d2);
+                case e_gcd: return e->value * av_gcd(d,d2);
+                case e_max: return e->value * (d >  d2 ?   d : d2);
+                case e_min: return e->value * (d <  d2 ?   d : d2);
+                case e_eq:  return e->value * (d == d2 ? 1.0 : 0.0);
+                case e_gt:  return e->value * (d >  d2 ? 1.0 : 0.0);
+                case e_gte: return e->value * (d >= d2 ? 1.0 : 0.0);
+                case e_lt:  return e->value * (d <  d2 ? 1.0 : 0.0);
+                case e_lte: return e->value * (d <= d2 ? 1.0 : 0.0);
+                case e_pow: return e->value * pow(d, d2);
+                case e_mul: return e->value * (d * d2);
+                case e_div: return e->value * ((!CONFIG_FTRAPV || d2 ) ? (d / d2) : d * INFINITY);
+                case e_add: return e->value * (d + d2);
+                case e_last:return e->value * d2;
+                case e_st : return e->value * (p->var[av_clip(d, 0, VARS-1)]= d2);
+                case e_hypot:return e->value * hypot(d, d2);
+                case e_atan2:return e->value * atan2(d, d2);
+                case e_bitand: return isnan(d) || isnan(d2) ? NAN : e->value * ((long int)d & (long int)d2);
+                case e_bitor:  return isnan(d) || isnan(d2) ? NAN : e->value * ((long int)d | (long int)d2);
+            }
+        }
+    }
+    return NAN;
+}
+
+static int parse_expr(AVExpr **e, Parser *p);
+
+void av_expr_free(AVExpr *e)
+{
+    if (!e) return;
+    av_expr_free(e->param[0]);
+    av_expr_free(e->param[1]);
+    av_expr_free(e->param[2]);
+    av_freep(&e->var);
+    av_freep(&e);
+}
+
+static int parse_primary(AVExpr **e, Parser *p)
+{
+    AVExpr *d = av_mallocz(sizeof(AVExpr));
+    char *next = p->s, *s0 = p->s;
+    int ret, i;
+
+    if (!d)
+        return AVERROR(ENOMEM);
+
+    /* number */
+    d->value = av_strtod(p->s, &next);
+    if (next != p->s) {
+        d->type = e_value;
+        p->s= next;
+        *e = d;
+        return 0;
+    }
+    d->value = 1;
+
+    /* named constants */
+    for (i=0; p->const_names && p->const_names[i]; i++) {
+        if (strmatch(p->s, p->const_names[i])) {
+            p->s+= strlen(p->const_names[i]);
+            d->type = e_const;
+            d->a.const_index = i;
+            *e = d;
+            return 0;
+        }
+    }
+    for (i = 0; i < FF_ARRAY_ELEMS(constants); i++) {
+        if (strmatch(p->s, constants[i].name)) {
+            p->s += strlen(constants[i].name);
+            d->type = e_value;
+            d->value = constants[i].value;
+            *e = d;
+            return 0;
+        }
+    }
+
+    p->s= strchr(p->s, '(');
+    if (!p->s) {
+        av_log(p, AV_LOG_ERROR, "Undefined constant or missing '(' in '%s'\n", s0);
+        p->s= next;
+        av_expr_free(d);
+        return AVERROR(EINVAL);
+    }
+    p->s++; // "("
+    if (*next == '(') { // special case do-nothing
+        av_freep(&d);
+        if ((ret = parse_expr(&d, p)) < 0)
+            return ret;
+        if (p->s[0] != ')') {
+            av_log(p, AV_LOG_ERROR, "Missing ')' in '%s'\n", s0);
+            av_expr_free(d);
+            return AVERROR(EINVAL);
+        }
+        p->s++; // ")"
+        *e = d;
+        return 0;
+    }
+    if ((ret = parse_expr(&(d->param[0]), p)) < 0) {
+        av_expr_free(d);
+        return ret;
+    }
+    if (p->s[0]== ',') {
+        p->s++; // ","
+        parse_expr(&d->param[1], p);
+    }
+    if (p->s[0]== ',') {
+        p->s++; // ","
+        parse_expr(&d->param[2], p);
+    }
+    if (p->s[0] != ')') {
+        av_log(p, AV_LOG_ERROR, "Missing ')' or too many args in '%s'\n", s0);
+        av_expr_free(d);
+        return AVERROR(EINVAL);
+    }
+    p->s++; // ")"
+
+    d->type = e_func0;
+         if (strmatch(next, "sinh"  )) d->a.func0 = sinh;
+    else if (strmatch(next, "cosh"  )) d->a.func0 = cosh;
+    else if (strmatch(next, "tanh"  )) d->a.func0 = tanh;
+    else if (strmatch(next, "sin"   )) d->a.func0 = sin;
+    else if (strmatch(next, "cos"   )) d->a.func0 = cos;
+    else if (strmatch(next, "tan"   )) d->a.func0 = tan;
+    else if (strmatch(next, "atan"  )) d->a.func0 = atan;
+    else if (strmatch(next, "asin"  )) d->a.func0 = asin;
+    else if (strmatch(next, "acos"  )) d->a.func0 = acos;
+    else if (strmatch(next, "exp"   )) d->a.func0 = exp;
+    else if (strmatch(next, "log"   )) d->a.func0 = log;
+    else if (strmatch(next, "abs"   )) d->a.func0 = fabs;
+    else if (strmatch(next, "time"  )) d->a.func0 = etime;
+    else if (strmatch(next, "squish")) d->type = e_squish;
+    else if (strmatch(next, "gauss" )) d->type = e_gauss;
+    else if (strmatch(next, "mod"   )) d->type = e_mod;
+    else if (strmatch(next, "max"   )) d->type = e_max;
+    else if (strmatch(next, "min"   )) d->type = e_min;
+    else if (strmatch(next, "eq"    )) d->type = e_eq;
+    else if (strmatch(next, "gte"   )) d->type = e_gte;
+    else if (strmatch(next, "gt"    )) d->type = e_gt;
+    else if (strmatch(next, "lte"   )) d->type = e_lte;
+    else if (strmatch(next, "lt"    )) d->type = e_lt;
+    else if (strmatch(next, "ld"    )) d->type = e_ld;
+    else if (strmatch(next, "isnan" )) d->type = e_isnan;
+    else if (strmatch(next, "isinf" )) d->type = e_isinf;
+    else if (strmatch(next, "st"    )) d->type = e_st;
+    else if (strmatch(next, "while" )) d->type = e_while;
+    else if (strmatch(next, "taylor")) d->type = e_taylor;
+    else if (strmatch(next, "root"  )) d->type = e_root;
+    else if (strmatch(next, "floor" )) d->type = e_floor;
+    else if (strmatch(next, "ceil"  )) d->type = e_ceil;
+    else if (strmatch(next, "trunc" )) d->type = e_trunc;
+    else if (strmatch(next, "round" )) d->type = e_round;
+    else if (strmatch(next, "sqrt"  )) d->type = e_sqrt;
+    else if (strmatch(next, "not"   )) d->type = e_not;
+    else if (strmatch(next, "pow"   )) d->type = e_pow;
+    else if (strmatch(next, "print" )) d->type = e_print;
+    else if (strmatch(next, "random")) d->type = e_random;
+    else if (strmatch(next, "hypot" )) d->type = e_hypot;
+    else if (strmatch(next, "gcd"   )) d->type = e_gcd;
+    else if (strmatch(next, "if"    )) d->type = e_if;
+    else if (strmatch(next, "ifnot" )) d->type = e_ifnot;
+    else if (strmatch(next, "bitand")) d->type = e_bitand;
+    else if (strmatch(next, "bitor" )) d->type = e_bitor;
+    else if (strmatch(next, "between"))d->type = e_between;
+    else if (strmatch(next, "clip"  )) d->type = e_clip;
+    else if (strmatch(next, "atan2" )) d->type = e_atan2;
+    else if (strmatch(next, "lerp"  )) d->type = e_lerp;
+    else {
+        for (i=0; p->func1_names && p->func1_names[i]; i++) {
+            if (strmatch(next, p->func1_names[i])) {
+                d->a.func1 = p->funcs1[i];
+                d->type = e_func1;
+                *e = d;
+                return 0;
+            }
+        }
+
+        for (i=0; p->func2_names && p->func2_names[i]; i++) {
+            if (strmatch(next, p->func2_names[i])) {
+                d->a.func2 = p->funcs2[i];
+                d->type = e_func2;
+                *e = d;
+                return 0;
+            }
+        }
+
+        av_log(p, AV_LOG_ERROR, "Unknown function in '%s'\n", s0);
+        av_expr_free(d);
+        return AVERROR(EINVAL);
+    }
+
+    *e = d;
+    return 0;
+}
+
+static AVExpr *make_eval_expr(int type, int value, AVExpr *p0, AVExpr *p1)
+{
+    AVExpr *e = av_mallocz(sizeof(AVExpr));
+    if (!e)
+        return NULL;
+    e->type     =type   ;
+    e->value    =value  ;
+    e->param[0] =p0     ;
+    e->param[1] =p1     ;
+    return e;
+}
+
+static int parse_pow(AVExpr **e, Parser *p, int *sign)
+{
+    *sign= (*p->s == '+') - (*p->s == '-');
+    p->s += *sign&1;
+    return parse_primary(e, p);
+}
+
+static int parse_dB(AVExpr **e, Parser *p, int *sign)
+{
+    /* do not filter out the negative sign when parsing a dB value.
+       for example, -3dB is not the same as -(3dB) */
+    if (*p->s == '-') {
+        char *next;
+        double av_unused ignored = strtod(p->s, &next);
+        if (next != p->s && next[0] == 'd' && next[1] == 'B') {
+            *sign = 0;
+            return parse_primary(e, p);
+        }
+    }
+    return parse_pow(e, p, sign);
+}
+
+static int parse_factor(AVExpr **e, Parser *p)
+{
+    int sign, sign2, ret;
+    AVExpr *e0, *e1, *e2;
+    if ((ret = parse_dB(&e0, p, &sign)) < 0)
+        return ret;
+    while(p->s[0]=='^'){
+        e1 = e0;
+        p->s++;
+        if ((ret = parse_dB(&e2, p, &sign2)) < 0) {
+            av_expr_free(e1);
+            return ret;
+        }
+        e0 = make_eval_expr(e_pow, 1, e1, e2);
+        if (!e0) {
+            av_expr_free(e1);
+            av_expr_free(e2);
+            return AVERROR(ENOMEM);
+        }
+        if (e0->param[1]) e0->param[1]->value *= (sign2|1);
+    }
+    if (e0) e0->value *= (sign|1);
+
+    *e = e0;
+    return 0;
+}
+
+static int parse_term(AVExpr **e, Parser *p)
+{
+    int ret;
+    AVExpr *e0, *e1, *e2;
+    if ((ret = parse_factor(&e0, p)) < 0)
+        return ret;
+    while (p->s[0]=='*' || p->s[0]=='/') {
+        int c= *p->s++;
+        e1 = e0;
+        if ((ret = parse_factor(&e2, p)) < 0) {
+            av_expr_free(e1);
+            return ret;
+        }
+        e0 = make_eval_expr(c == '*' ? e_mul : e_div, 1, e1, e2);
+        if (!e0) {
+            av_expr_free(e1);
+            av_expr_free(e2);
+            return AVERROR(ENOMEM);
+        }
+    }
+    *e = e0;
+    return 0;
+}
+
+static int parse_subexpr(AVExpr **e, Parser *p)
+{
+    int ret;
+    AVExpr *e0, *e1, *e2;
+    if ((ret = parse_term(&e0, p)) < 0)
+        return ret;
+    while (*p->s == '+' || *p->s == '-') {
+        e1 = e0;
+        if ((ret = parse_term(&e2, p)) < 0) {
+            av_expr_free(e1);
+            return ret;
+        }
+        e0 = make_eval_expr(e_add, 1, e1, e2);
+        if (!e0) {
+            av_expr_free(e1);
+            av_expr_free(e2);
+            return AVERROR(ENOMEM);
+        }
+    };
+
+    *e = e0;
+    return 0;
+}
+
+static int parse_expr(AVExpr **e, Parser *p)
+{
+    int ret;
+    AVExpr *e0, *e1, *e2;
+    if (p->stack_index <= 0) //protect against stack overflows
+        return AVERROR(EINVAL);
+    p->stack_index--;
+
+    if ((ret = parse_subexpr(&e0, p)) < 0)
+        return ret;
+    while (*p->s == ';') {
+        p->s++;
+        e1 = e0;
+        if ((ret = parse_subexpr(&e2, p)) < 0) {
+            av_expr_free(e1);
+            return ret;
+        }
+        e0 = make_eval_expr(e_last, 1, e1, e2);
+        if (!e0) {
+            av_expr_free(e1);
+            av_expr_free(e2);
+            return AVERROR(ENOMEM);
+        }
+    };
+
+    p->stack_index++;
+    *e = e0;
+    return 0;
+}
+
+static int verify_expr(AVExpr *e)
+{
+    if (!e) return 0;
+    switch (e->type) {
+        case e_value:
+        case e_const: return 1;
+        case e_func0:
+        case e_func1:
+        case e_squish:
+        case e_ld:
+        case e_gauss:
+        case e_isnan:
+        case e_isinf:
+        case e_floor:
+        case e_ceil:
+        case e_trunc:
+        case e_round:
+        case e_sqrt:
+        case e_not:
+        case e_random:
+            return verify_expr(e->param[0]) && !e->param[1];
+        case e_print:
+            return verify_expr(e->param[0])
+                   && (!e->param[1] || verify_expr(e->param[1]));
+        case e_if:
+        case e_ifnot:
+        case e_taylor:
+            return verify_expr(e->param[0]) && verify_expr(e->param[1])
+                   && (!e->param[2] || verify_expr(e->param[2]));
+        case e_between:
+        case e_clip:
+        case e_lerp:
+            return verify_expr(e->param[0]) &&
+                   verify_expr(e->param[1]) &&
+                   verify_expr(e->param[2]);
+        default: return verify_expr(e->param[0]) && verify_expr(e->param[1]) && !e->param[2];
+    }
+}
+
+int av_expr_parse(AVExpr **expr, const char *s,
+                  const char * const *const_names,
+                  const char * const *func1_names, double (* const *funcs1)(void *, double),
+                  const char * const *func2_names, double (* const *funcs2)(void *, double, double),
+                  int log_offset, void *log_ctx)
+{
+    Parser p = { 0 };
+    AVExpr *e = NULL;
+    char *w = av_malloc(strlen(s) + 1);
+    char *wp = w;
+    const char *s0 = s;
+    int ret = 0;
+
+    if (!w)
+        return AVERROR(ENOMEM);
+
+    while (*s)
+        if (!av_isspace(*s++)) *wp++ = s[-1];
+    *wp++ = 0;
+
+    p.class      = &eval_class;
+    p.stack_index=100;
+    p.s= w;
+    p.const_names = const_names;
+    p.funcs1      = funcs1;
+    p.func1_names = func1_names;
+    p.funcs2      = funcs2;
+    p.func2_names = func2_names;
+    p.log_offset = log_offset;
+    p.log_ctx    = log_ctx;
+
+    if ((ret = parse_expr(&e, &p)) < 0)
+        goto end;
+    if (*p.s) {
+        av_log(&p, AV_LOG_ERROR, "Invalid chars '%s' at the end of expression '%s'\n", p.s, s0);
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+    if (!verify_expr(e)) {
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+    e->var= av_mallocz(sizeof(double) *VARS);
+    if (!e->var) {
+        ret = AVERROR(ENOMEM);
+        goto end;
+    }
+    *expr = e;
+    e = NULL;
+end:
+    av_expr_free(e);
+    av_free(w);
+    return ret;
+}
+
+double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
+{
+    Parser p = { 0 };
+    p.var= e->var;
+
+    p.const_values = const_values;
+    p.opaque     = opaque;
+    return eval_expr(&p, e);
+}
+
+int av_expr_parse_and_eval(double *d, const char *s,
+                           const char * const *const_names, const double *const_values,
+                           const char * const *func1_names, double (* const *funcs1)(void *, double),
+                           const char * const *func2_names, double (* const *funcs2)(void *, double, double),
+                           void *opaque, int log_offset, void *log_ctx)
+{
+    AVExpr *e = NULL;
+    int ret = av_expr_parse(&e, s, const_names, func1_names, funcs1, func2_names, funcs2, log_offset, log_ctx);
+
+    if (ret < 0) {
+        *d = NAN;
+        return ret;
+    }
+    *d = av_expr_eval(e, const_values, opaque);
+    av_expr_free(e);
+    return isnan(*d) ? AVERROR(EINVAL) : 0;
+}
diff --git a/media/ffvpx/libavutil/eval.h b/media/ffvpx/libavutil/eval.h
new file mode 100644
index 0000000000..dacd22b96e
--- /dev/null
+++ b/media/ffvpx/libavutil/eval.h
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * simple arithmetic expression evaluator
+ */
+
+#ifndef AVUTIL_EVAL_H
+#define AVUTIL_EVAL_H
+
+#include "avutil.h"
+
+typedef struct AVExpr AVExpr;
+
+/**
+ * Parse and evaluate an expression.
+ * Note, this is significantly slower than av_expr_eval().
+ *
+ * @param res a pointer to a double where is put the result value of
+ * the expression, or NAN in case of error
+ * @param s expression as a zero terminated string, for example "1+2^3+5*5+sin(2/3)"
+ * @param const_names NULL terminated array of zero terminated strings of constant identifiers, for example {"PI", "E", 0}
+ * @param const_values a zero terminated array of values for the identifiers from const_names
+ * @param func1_names NULL terminated array of zero terminated strings of funcs1 identifiers
+ * @param funcs1 NULL terminated array of function pointers for functions which take 1 argument
+ * @param func2_names NULL terminated array of zero terminated strings of funcs2 identifiers
+ * @param funcs2 NULL terminated array of function pointers for functions which take 2 arguments
+ * @param opaque a pointer which will be passed to all functions from funcs1 and funcs2
+ * @param log_ctx parent logging context
+ * @return >= 0 in case of success, a negative value corresponding to an
+ * AVERROR code otherwise
+ */
+int av_expr_parse_and_eval(double *res, const char *s,
+                           const char * const *const_names, const double *const_values,
+                           const char * const *func1_names, double (* const *funcs1)(void *, double),
+                           const char * const *func2_names, double (* const *funcs2)(void *, double, double),
+                           void *opaque, int log_offset, void *log_ctx);
+
+/**
+ * Parse an expression.
+ *
+ * @param expr a pointer where is put an AVExpr containing the parsed
+ * value in case of successful parsing, or NULL otherwise.
+ * The pointed to AVExpr must be freed with av_expr_free() by the user
+ * when it is not needed anymore.
+ * @param s expression as a zero terminated string, for example "1+2^3+5*5+sin(2/3)"
+ * @param const_names NULL terminated array of zero terminated strings of constant identifiers, for example {"PI", "E", 0}
+ * @param func1_names NULL terminated array of zero terminated strings of funcs1 identifiers
+ * @param funcs1 NULL terminated array of function pointers for functions which take 1 argument
+ * @param func2_names NULL terminated array of zero terminated strings of funcs2 identifiers
+ * @param funcs2 NULL terminated array of function pointers for functions which take 2 arguments
+ * @param log_ctx parent logging context
+ * @return >= 0 in case of success, a negative value corresponding to an
+ * AVERROR code otherwise
+ */
+int av_expr_parse(AVExpr **expr, const char *s,
+                  const char * const *const_names,
+                  const char * const *func1_names, double (* const *funcs1)(void *, double),
+                  const char * const *func2_names, double (* const *funcs2)(void *, double, double),
+                  int log_offset, void *log_ctx);
+
+/**
+ * Evaluate a previously parsed expression.
+ *
+ * @param const_values a zero terminated array of values for the identifiers from av_expr_parse() const_names
+ * @param opaque a pointer which will be passed to all functions from funcs1 and funcs2
+ * @return the value of the expression
+ */
+double av_expr_eval(AVExpr *e, const double *const_values, void *opaque);
+
+/**
+ * Free a parsed expression previously created with av_expr_parse().
+ */
+void av_expr_free(AVExpr *e);
+
+/**
+ * Parse the string in numstr and return its value as a double. If
+ * the string is empty, contains only whitespaces, or does not contain
+ * an initial substring that has the expected syntax for a
+ * floating-point number, no conversion is performed. In this case,
+ * returns a value of zero and the value returned in tail is the value
+ * of numstr.
+ *
+ * @param numstr a string representing a number, may contain one of
+ * the International System number postfixes, for example 'K', 'M',
+ * 'G'. If 'i' is appended after the postfix, powers of 2 are used
+ * instead of powers of 10. The 'B' postfix multiplies the value by
+ * 8, and can be appended after another postfix or used alone. This
+ * allows using for example 'KB', 'MiB', 'G' and 'B' as postfix.
+ * @param tail if non-NULL puts here the pointer to the char next
+ * after the last parsed character
+ */
+double av_strtod(const char *numstr, char **tail);
+
+#endif /* AVUTIL_EVAL_H */
diff --git a/media/ffvpx/libavutil/ffmath.h b/media/ffvpx/libavutil/ffmath.h
new file mode 100644
index 0000000000..aad1347f26
--- /dev/null
+++ b/media/ffvpx/libavutil/ffmath.h
@@ -0,0 +1,67 @@
+/*
+ * copyright (c) 2016 Ganesh Ajjanagadde <gajjanag@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * internal math functions header
+ */
+
+#ifndef AVUTIL_FFMATH_H
+#define AVUTIL_FFMATH_H
+
+#include "attributes.h"
+#include "libm.h"
+
+/**
+ * Compute 10^x for floating point values. Note: this function is by no means
+ * "correctly rounded", and is meant as a fast, reasonably accurate approximation.
+ * For instance, maximum relative error for the double precision variant is
+ * ~ 1e-13 for very small and very large values.
+ * This is ~2x faster than GNU libm's approach, which is still off by 2ulp on
+ * some inputs.
+ * @param x exponent
+ * @return 10^x
+ */
+static av_always_inline double ff_exp10(double x)
+{
+    return exp2(M_LOG2_10 * x);
+}
+
+static av_always_inline float ff_exp10f(float x)
+{
+    return exp2f(M_LOG2_10 * x);
+}
+
+/**
+ * Compute x^y for floating point x, y. Note: this function is faster than the
+ * libm variant due to mainly 2 reasons:
+ * 1. It does not handle any edge cases. In particular, this is only guaranteed
+ * to work correctly for x > 0.
+ * 2. It is not as accurate as a standard nearly "correctly rounded" libm variant.
+ * @param x base
+ * @param y exponent
+ * @return x^y
+ */
+static av_always_inline float ff_fast_powf(float x, float y)
+{
+    return expf(logf(x) * y);
+}
+
+#endif /* AVUTIL_FFMATH_H */
diff --git a/media/ffvpx/libavutil/fftime.h b/media/ffvpx/libavutil/fftime.h
new file mode 100644
index 0000000000..dc169b064a
--- /dev/null
+++ b/media/ffvpx/libavutil/fftime.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2000-2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_TIME_H
+#define AVUTIL_TIME_H
+
+#include <stdint.h>
+
+/**
+ * Get the current time in microseconds.
+ */
+int64_t av_gettime(void);
+
+/**
+ * Get the current time in microseconds since some unspecified starting point.
+ * On platforms that support it, the time comes from a monotonic clock
+ * This property makes this time source ideal for measuring relative time.
+ * The returned values may not be monotonic on platforms where a monotonic
+ * clock is not available.
+ */
+int64_t av_gettime_relative(void);
+
+/**
+ * Indicates with a boolean result if the av_gettime_relative() time source
+ * is monotonic.
+ */
+int av_gettime_relative_is_monotonic(void);
+
+/**
+ * Sleep for a period of time.  Although the duration is expressed in
+ * microseconds, the actual delay may be rounded to the precision of the
+ * system timer.
+ *
+ * @param  usec Number of microseconds to sleep.
+ * @return zero on success or (negative) error code.
+ */
+int av_usleep(unsigned usec);
+
+#endif /* AVUTIL_TIME_H */
diff --git a/media/ffvpx/libavutil/ffversion.h b/media/ffvpx/libavutil/ffversion.h
new file mode 100644
index 0000000000..24771fc80d
--- /dev/null
+++ b/media/ffvpx/libavutil/ffversion.h
@@ -0,0 +1,5 @@
+/* Automatically generated by version.sh, do not manually edit! */
+#ifndef AVUTIL_FFVERSION_H
+#define AVUTIL_FFVERSION_H
+#define FFMPEG_VERSION "n4.0.2-6-g2be51cbeea"
+#endif /* AVUTIL_FFVERSION_H */
diff --git a/media/ffvpx/libavutil/fifo.c b/media/ffvpx/libavutil/fifo.c
new file mode 100644
index 0000000000..1060aedf13
--- /dev/null
+++ b/media/ffvpx/libavutil/fifo.c
@@ -0,0 +1,240 @@
+/*
+ * a very simple circular buffer FIFO implementation
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2006 Roman Shaposhnik
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "avassert.h"
+#include "common.h"
+#include "fifo.h"
+
+static AVFifoBuffer *fifo_alloc_common(void *buffer, size_t size)
+{
+    AVFifoBuffer *f;
+    if (!buffer)
+        return NULL;
+    f = av_mallocz(sizeof(AVFifoBuffer));
+    if (!f) {
+        av_free(buffer);
+        return NULL;
+    }
+    f->buffer = buffer;
+    f->end    = f->buffer + size;
+    av_fifo_reset(f);
+    return f;
+}
+
+AVFifoBuffer *av_fifo_alloc(unsigned int size)
+{
+    void *buffer = av_malloc(size);
+    return fifo_alloc_common(buffer, size);
+}
+
+AVFifoBuffer *av_fifo_alloc_array(size_t nmemb, size_t size)
+{
+    void *buffer = av_malloc_array(nmemb, size);
+    return fifo_alloc_common(buffer, nmemb * size);
+}
+
+void av_fifo_free(AVFifoBuffer *f)
+{
+    if (f) {
+        av_freep(&f->buffer);
+        av_free(f);
+    }
+}
+
+void av_fifo_freep(AVFifoBuffer **f)
+{
+    if (f) {
+        av_fifo_free(*f);
+        *f = NULL;
+    }
+}
+
+void av_fifo_reset(AVFifoBuffer *f)
+{
+    f->wptr = f->rptr = f->buffer;
+    f->wndx = f->rndx = 0;
+}
+
+int av_fifo_size(const AVFifoBuffer *f)
+{
+    return (uint32_t)(f->wndx - f->rndx);
+}
+
+int av_fifo_space(const AVFifoBuffer *f)
+{
+    return f->end - f->buffer - av_fifo_size(f);
+}
+
+int av_fifo_realloc2(AVFifoBuffer *f, unsigned int new_size)
+{
+    unsigned int old_size = f->end - f->buffer;
+
+    if (old_size < new_size) {
+        int len          = av_fifo_size(f);
+        AVFifoBuffer *f2 = av_fifo_alloc(new_size);
+
+        if (!f2)
+            return AVERROR(ENOMEM);
+        av_fifo_generic_read(f, f2->buffer, len, NULL);
+        f2->wptr += len;
+        f2->wndx += len;
+        av_free(f->buffer);
+        *f = *f2;
+        av_free(f2);
+    }
+    return 0;
+}
+
+int av_fifo_grow(AVFifoBuffer *f, unsigned int size)
+{
+    unsigned int old_size = f->end - f->buffer;
+    if(size + (unsigned)av_fifo_size(f) < size)
+        return AVERROR(EINVAL);
+
+    size += av_fifo_size(f);
+
+    if (old_size < size)
+        return av_fifo_realloc2(f, FFMAX(size, 2*old_size));
+    return 0;
+}
+
+/* src must NOT be const as it can be a context for func that may need
+ * updating (like a pointer or byte counter) */
+int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size,
+                          int (*func)(void *, void *, int))
+{
+    int total = size;
+    uint32_t wndx= f->wndx;
+    uint8_t *wptr= f->wptr;
+
+    do {
+        int len = FFMIN(f->end - wptr, size);
+        if (func) {
+            len = func(src, wptr, len);
+            if (len <= 0)
+                break;
+        } else {
+            memcpy(wptr, src, len);
+            src = (uint8_t *)src + len;
+        }
+// Write memory barrier needed for SMP here in theory
+        wptr += len;
+        if (wptr >= f->end)
+            wptr = f->buffer;
+        wndx    += len;
+        size    -= len;
+    } while (size > 0);
+    f->wndx= wndx;
+    f->wptr= wptr;
+    return total - size;
+}
+
+int av_fifo_generic_peek_at(AVFifoBuffer *f, void *dest, int offset, int buf_size, void (*func)(void*, void*, int))
+{
+    uint8_t *rptr = f->rptr;
+
+    av_assert2(offset >= 0);
+
+    /*
+     * *ndx are indexes modulo 2^32, they are intended to overflow,
+     * to handle *ndx greater than 4gb.
+     */
+    av_assert2(buf_size + (unsigned)offset <= f->wndx - f->rndx);
+
+    if (offset >= f->end - rptr)
+        rptr += offset - (f->end - f->buffer);
+    else
+        rptr += offset;
+
+    while (buf_size > 0) {
+        int len;
+
+        if (rptr >= f->end)
+            rptr -= f->end - f->buffer;
+
+        len = FFMIN(f->end - rptr, buf_size);
+        if (func)
+            func(dest, rptr, len);
+        else {
+            memcpy(dest, rptr, len);
+            dest = (uint8_t *)dest + len;
+        }
+
+        buf_size -= len;
+        rptr     += len;
+    }
+
+    return 0;
+}
+
+int av_fifo_generic_peek(AVFifoBuffer *f, void *dest, int buf_size,
+                         void (*func)(void *, void *, int))
+{
+// Read memory barrier needed for SMP here in theory
+    uint8_t *rptr = f->rptr;
+
+    do {
+        int len = FFMIN(f->end - rptr, buf_size);
+        if (func)
+            func(dest, rptr, len);
+        else {
+            memcpy(dest, rptr, len);
+            dest = (uint8_t *)dest + len;
+        }
+// memory barrier needed for SMP here in theory
+        rptr += len;
+        if (rptr >= f->end)
+            rptr -= f->end - f->buffer;
+        buf_size -= len;
+    } while (buf_size > 0);
+
+    return 0;
+}
+
+int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size,
+                         void (*func)(void *, void *, int))
+{
+// Read memory barrier needed for SMP here in theory
+    do {
+        int len = FFMIN(f->end - f->rptr, buf_size);
+        if (func)
+            func(dest, f->rptr, len);
+        else {
+            memcpy(dest, f->rptr, len);
+            dest = (uint8_t *)dest + len;
+        }
+// memory barrier needed for SMP here in theory
+        av_fifo_drain(f, len);
+        buf_size -= len;
+    } while (buf_size > 0);
+    return 0;
+}
+
+/** Discard data from the FIFO. */
+void av_fifo_drain(AVFifoBuffer *f, int size)
+{
+    av_assert2(av_fifo_size(f) >= size);
+    f->rptr += size;
+    if (f->rptr >= f->end)
+        f->rptr -= f->end - f->buffer;
+    f->rndx += size;
+}
diff --git a/media/ffvpx/libavutil/fifo.h b/media/ffvpx/libavutil/fifo.h
new file mode 100644
index 0000000000..dc7bc6f0dd
--- /dev/null
+++ b/media/ffvpx/libavutil/fifo.h
@@ -0,0 +1,179 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * a very simple circular buffer FIFO implementation
+ */
+
+#ifndef AVUTIL_FIFO_H
+#define AVUTIL_FIFO_H
+
+#include <stdint.h>
+#include "avutil.h"
+#include "attributes.h"
+
+typedef struct AVFifoBuffer {
+    uint8_t *buffer;
+    uint8_t *rptr, *wptr, *end;
+    uint32_t rndx, wndx;
+} AVFifoBuffer;
+
+/**
+ * Initialize an AVFifoBuffer.
+ * @param size of FIFO
+ * @return AVFifoBuffer or NULL in case of memory allocation failure
+ */
+AVFifoBuffer *av_fifo_alloc(unsigned int size);
+
+/**
+ * Initialize an AVFifoBuffer.
+ * @param nmemb number of elements
+ * @param size  size of the single element
+ * @return AVFifoBuffer or NULL in case of memory allocation failure
+ */
+AVFifoBuffer *av_fifo_alloc_array(size_t nmemb, size_t size);
+
+/**
+ * Free an AVFifoBuffer.
+ * @param f AVFifoBuffer to free
+ */
+void av_fifo_free(AVFifoBuffer *f);
+
+/**
+ * Free an AVFifoBuffer and reset pointer to NULL.
+ * @param f AVFifoBuffer to free
+ */
+void av_fifo_freep(AVFifoBuffer **f);
+
+/**
+ * Reset the AVFifoBuffer to the state right after av_fifo_alloc, in particular it is emptied.
+ * @param f AVFifoBuffer to reset
+ */
+void av_fifo_reset(AVFifoBuffer *f);
+
+/**
+ * Return the amount of data in bytes in the AVFifoBuffer, that is the
+ * amount of data you can read from it.
+ * @param f AVFifoBuffer to read from
+ * @return size
+ */
+int av_fifo_size(const AVFifoBuffer *f);
+
+/**
+ * Return the amount of space in bytes in the AVFifoBuffer, that is the
+ * amount of data you can write into it.
+ * @param f AVFifoBuffer to write into
+ * @return size
+ */
+int av_fifo_space(const AVFifoBuffer *f);
+
+/**
+ * Feed data at specific position from an AVFifoBuffer to a user-supplied callback.
+ * Similar as av_fifo_gereric_read but without discarding data.
+ * @param f AVFifoBuffer to read from
+ * @param offset offset from current read position
+ * @param buf_size number of bytes to read
+ * @param func generic read function
+ * @param dest data destination
+ */
+int av_fifo_generic_peek_at(AVFifoBuffer *f, void *dest, int offset, int buf_size, void (*func)(void*, void*, int));
+
+/**
+ * Feed data from an AVFifoBuffer to a user-supplied callback.
+ * Similar as av_fifo_gereric_read but without discarding data.
+ * @param f AVFifoBuffer to read from
+ * @param buf_size number of bytes to read
+ * @param func generic read function
+ * @param dest data destination
+ */
+int av_fifo_generic_peek(AVFifoBuffer *f, void *dest, int buf_size, void (*func)(void*, void*, int));
+
+/**
+ * Feed data from an AVFifoBuffer to a user-supplied callback.
+ * @param f AVFifoBuffer to read from
+ * @param buf_size number of bytes to read
+ * @param func generic read function
+ * @param dest data destination
+ */
+int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size, void (*func)(void*, void*, int));
+
+/**
+ * Feed data from a user-supplied callback to an AVFifoBuffer.
+ * @param f AVFifoBuffer to write to
+ * @param src data source; non-const since it may be used as a
+ * modifiable context by the function defined in func
+ * @param size number of bytes to write
+ * @param func generic write function; the first parameter is src,
+ * the second is dest_buf, the third is dest_buf_size.
+ * func must return the number of bytes written to dest_buf, or <= 0 to
+ * indicate no more data available to write.
+ * If func is NULL, src is interpreted as a simple byte array for source data.
+ * @return the number of bytes written to the FIFO
+ */
+int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int (*func)(void*, void*, int));
+
+/**
+ * Resize an AVFifoBuffer.
+ * In case of reallocation failure, the old FIFO is kept unchanged.
+ *
+ * @param f AVFifoBuffer to resize
+ * @param size new AVFifoBuffer size in bytes
+ * @return <0 for failure, >=0 otherwise
+ */
+int av_fifo_realloc2(AVFifoBuffer *f, unsigned int size);
+
+/**
+ * Enlarge an AVFifoBuffer.
+ * In case of reallocation failure, the old FIFO is kept unchanged.
+ * The new fifo size may be larger than the requested size.
+ *
+ * @param f AVFifoBuffer to resize
+ * @param additional_space the amount of space in bytes to allocate in addition to av_fifo_size()
+ * @return <0 for failure, >=0 otherwise
+ */
+int av_fifo_grow(AVFifoBuffer *f, unsigned int additional_space);
+
+/**
+ * Read and discard the specified amount of data from an AVFifoBuffer.
+ * @param f AVFifoBuffer to read from
+ * @param size amount of data to read in bytes
+ */
+void av_fifo_drain(AVFifoBuffer *f, int size);
+
+/**
+ * Return a pointer to the data stored in a FIFO buffer at a certain offset.
+ * The FIFO buffer is not modified.
+ *
+ * @param f    AVFifoBuffer to peek at, f must be non-NULL
+ * @param offs an offset in bytes, its absolute value must be less
+ *             than the used buffer size or the returned pointer will
+ *             point outside to the buffer data.
+ *             The used buffer size can be checked with av_fifo_size().
+ */
+static inline uint8_t *av_fifo_peek2(const AVFifoBuffer *f, int offs)
+{
+    uint8_t *ptr = f->rptr + offs;
+    if (ptr >= f->end)
+        ptr = f->buffer + (ptr - f->end);
+    else if (ptr < f->buffer)
+        ptr = f->end - (f->buffer - ptr);
+    return ptr;
+}
+
+#endif /* AVUTIL_FIFO_H */
diff --git a/media/ffvpx/libavutil/fixed_dsp.c b/media/ffvpx/libavutil/fixed_dsp.c
new file mode 100644
index 0000000000..8c018581df
--- /dev/null
+++ b/media/ffvpx/libavutil/fixed_dsp.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2012
+ *      MIPS Technologies, Inc., California.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Author:  Nedeljko Babic (nedeljko.babic imgtec com)
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "fixed_dsp.h"
+
+static void vector_fmul_add_c(int *dst, const int *src0, const int *src1, const int *src2, int len){
+    int i;
+    int64_t accu;
+
+    for (i=0; i<len; i++) {
+        accu = (int64_t)src0[i] * src1[i];
+        dst[i] = src2[i] + (int)((accu + 0x40000000) >> 31);
+    }
+}
+
+static void vector_fmul_reverse_c(int *dst, const int *src0, const int *src1, int len)
+{
+    int i;
+    int64_t accu;
+
+    src1 += len-1;
+    for (i=0; i<len; i++) {
+        accu = (int64_t)src0[i] * src1[-i];
+        dst[i] = (int)((accu+0x40000000) >> 31);
+    }
+}
+
+static void vector_fmul_window_scaled_c(int16_t *dst, const int32_t *src0,
+                                       const int32_t *src1, const int32_t *win,
+                                       int len, uint8_t bits)
+{
+    int32_t s0, s1, wi, wj, i,j, round;
+
+    dst += len;
+    win += len;
+    src0+= len;
+    round = bits? 1 << (bits-1) : 0;
+
+    for (i=-len, j=len-1; i<0; i++, j--) {
+        s0 = src0[i];
+        s1 = src1[j];
+        wi = win[i];
+        wj = win[j];
+        dst[i] = av_clip_int16(((((int64_t)s0*wj - (int64_t)s1*wi + 0x40000000) >> 31) + round) >> bits);
+        dst[j] = av_clip_int16(((((int64_t)s0*wi + (int64_t)s1*wj + 0x40000000) >> 31) + round) >> bits);
+    }
+}
+
+static void vector_fmul_window_c(int32_t *dst, const int32_t *src0,
+                                       const int32_t *src1, const int32_t *win,
+                                       int len)
+{
+    int32_t s0, s1, wi, wj, i, j;
+
+    dst += len;
+    win += len;
+    src0+= len;
+
+    for (i=-len, j=len-1; i<0; i++, j--) {
+        s0 = src0[i];
+        s1 = src1[j];
+        wi = win[i];
+        wj = win[j];
+        dst[i] = ((int64_t)s0*wj - (int64_t)s1*wi + 0x40000000) >> 31;
+        dst[j] = ((int64_t)s0*wi + (int64_t)s1*wj + 0x40000000) >> 31;
+    }
+}
+
+static void vector_fmul_c(int *dst, const int *src0, const int *src1, int len)
+{
+    int i;
+    int64_t accu;
+
+    for (i = 0; i < len; i++){
+        accu = (int64_t)src0[i] * src1[i];
+        dst[i] = (int)((accu+0x40000000) >> 31);
+    }
+}
+
+static int scalarproduct_fixed_c(const int *v1, const int *v2, int len)
+{
+    /** p is initialized with 0x40000000 so that the proper rounding will occur
+      * at the end */
+    int64_t p = 0x40000000;
+    int i;
+
+    for (i = 0; i < len; i++)
+        p += (int64_t)v1[i] * v2[i];
+
+    return (int)(p >> 31);
+}
+
+static void butterflies_fixed_c(int *v1, int *v2, int len)
+{
+    int i;
+
+    for (i = 0; i < len; i++){
+        int t = v1[i] - v2[i];
+        v1[i] += v2[i];
+        v2[i] = t;
+    }
+}
+
+AVFixedDSPContext * avpriv_alloc_fixed_dsp(int bit_exact)
+{
+    AVFixedDSPContext * fdsp = av_malloc(sizeof(AVFixedDSPContext));
+
+    if (!fdsp)
+        return NULL;
+
+    fdsp->vector_fmul_window_scaled = vector_fmul_window_scaled_c;
+    fdsp->vector_fmul_window = vector_fmul_window_c;
+    fdsp->vector_fmul = vector_fmul_c;
+    fdsp->vector_fmul_add = vector_fmul_add_c;
+    fdsp->vector_fmul_reverse = vector_fmul_reverse_c;
+    fdsp->butterflies_fixed = butterflies_fixed_c;
+    fdsp->scalarproduct_fixed = scalarproduct_fixed_c;
+
+    if (ARCH_X86)
+        ff_fixed_dsp_init_x86(fdsp);
+
+    return fdsp;
+}
diff --git a/media/ffvpx/libavutil/fixed_dsp.h b/media/ffvpx/libavutil/fixed_dsp.h
new file mode 100644
index 0000000000..f554cb5038
--- /dev/null
+++ b/media/ffvpx/libavutil/fixed_dsp.h
@@ -0,0 +1,205 @@
+/*
+ * Copyright (c) 2012
+ *      MIPS Technologies, Inc., California.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * Author:  Nedeljko Babic (nbabic@mips.com)
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_FIXED_DSP_H
+#define AVUTIL_FIXED_DSP_H
+
+#include <stdint.h>
+#include "attributes.h"
+#include "common.h"
+#include "libavcodec/mathops.h"
+
+typedef struct AVFixedDSPContext {
+    /* Assume len is a multiple of 16, and arrays are 32-byte aligned */
+    /* Results of multiplications are scaled down by 31 bit (and rounded) if not
+     * stated otherwise */
+
+    /**
+     * Overlap/add with window function.
+     * Result is scaled down by "bits" bits.
+     * Used primarily by MDCT-based audio codecs.
+     * Source and destination vectors must overlap exactly or not at all.
+     *
+     * @param dst  result vector
+     *             constraints: 16-byte aligned
+     * @param src0 first source vector
+     *             constraints: 16-byte aligned
+     * @param src1 second source vector
+     *             constraints: 16-byte aligned
+     * @param win  half-window vector
+     *             constraints: 16-byte aligned
+     * @param len  length of vector
+     *             constraints: multiple of 4
+     * @param bits scaling parameter
+     *
+     */
+    void (*vector_fmul_window_scaled)(int16_t *dst, const int32_t *src0, const int32_t *src1, const int32_t *win, int len, uint8_t bits);
+
+    /**
+     * Overlap/add with window function.
+     * Used primarily by MDCT-based audio codecs.
+     * Source and destination vectors must overlap exactly or not at all.
+     *
+     * @param dst  result vector
+     *             constraints: 32-byte aligned
+     * @param src0 first source vector
+     *             constraints: 16-byte aligned
+     * @param src1 second source vector
+     *             constraints: 16-byte aligned
+     * @param win  half-window vector
+     *             constraints: 16-byte aligned
+     * @param len  length of vector
+     *             constraints: multiple of 4
+     */
+    void (*vector_fmul_window)(int32_t *dst, const int32_t *src0, const int32_t *src1, const int32_t *win, int len);
+
+    /**
+     * Fixed-point multiplication that calculates the entry wise product of two
+     * vectors of integers and stores the result in a vector of integers.
+     *
+     * @param dst  output vector
+     *             constraints: 32-byte aligned
+     * @param src0 first input vector
+     *             constraints: 32-byte aligned
+     * @param src1 second input vector
+     *             constraints: 32-byte aligned
+     * @param len  number of elements in the input
+     *             constraints: multiple of 16
+     */
+    void (*vector_fmul)(int *dst, const int *src0, const int *src1,
+                        int len);
+
+    void (*vector_fmul_reverse)(int *dst, const int *src0, const int *src1, int len);
+    /**
+     * Calculate the entry wise product of two vectors of integers, add a third vector of
+     * integers and store the result in a vector of integers.
+     *
+     * @param dst  output vector
+     *             constraints: 32-byte aligned
+     * @param src0 first input vector
+     *             constraints: 32-byte aligned
+     * @param src1 second input vector
+     *             constraints: 32-byte aligned
+     * @param src2 third input vector
+     *             constraints: 32-byte aligned
+     * @param len  number of elements in the input
+     *             constraints: multiple of 16
+     */
+    void (*vector_fmul_add)(int *dst, const int *src0, const int *src1,
+                            const int *src2, int len);
+
+    /**
+     * Calculate the scalar product of two vectors of integers.
+     *
+     * @param v1  first vector, 16-byte aligned
+     * @param v2  second vector, 16-byte aligned
+     * @param len length of vectors, multiple of 4
+     *
+     * @return sum of elementwise products
+     */
+    int (*scalarproduct_fixed)(const int *v1, const int *v2, int len);
+
+    /**
+     * Calculate the sum and difference of two vectors of integers.
+     *
+     * @param v1  first input vector, sum output, 16-byte aligned
+     * @param v2  second input vector, difference output, 16-byte aligned
+     * @param len length of vectors, multiple of 4
+     */
+    void (*butterflies_fixed)(int *av_restrict v1, int *av_restrict v2, int len);
+} AVFixedDSPContext;
+
+/**
+ * Allocate and initialize a fixed DSP context.
+ * note: should be freed with a av_free call when no longer needed.
+ *
+ * @param strict  setting to non-zero avoids using functions which may not be IEEE-754 compliant
+ */
+AVFixedDSPContext * avpriv_alloc_fixed_dsp(int strict);
+
+void ff_fixed_dsp_init_x86(AVFixedDSPContext *fdsp);
+
+/**
+ * Calculate the square root
+ *
+ * @param x    input fixed point number
+ *
+ * @param bits format of fixed point number (32 - bits).bits
+ *
+ * note: input is normalized to (0, 1) fixed point value
+ */
+
+static av_always_inline int fixed_sqrt(int x, int bits)
+{
+    int retval, bit_mask, guess, square, i;
+    int64_t accu;
+    int shift1 = 30 - bits;
+    int shift2 = bits - 15;
+
+    if (shift1 > 0) retval = ff_sqrt(x << shift1);
+    else retval = ff_sqrt(x >> -shift1);
+
+    if (shift2 > 0) {
+        retval = retval << shift2;
+        bit_mask = (1 << (shift2 - 1));
+
+        for (i=0; i<shift2; i++){
+            guess = retval + bit_mask;
+            accu = (int64_t)guess * guess;
+            square = (int)((accu + bit_mask) >> bits);
+            if (x >= square)
+                retval += bit_mask;
+            bit_mask >>= 1;
+        }
+
+    }
+    else retval >>= (-shift2);
+
+    return retval;
+}
+
+#endif /* AVUTIL_FIXED_DSP_H */
diff --git a/media/ffvpx/libavutil/float_dsp.c b/media/ffvpx/libavutil/float_dsp.c
new file mode 100644
index 0000000000..6e28d71b57
--- /dev/null
+++ b/media/ffvpx/libavutil/float_dsp.c
@@ -0,0 +1,164 @@
+/*
+ * Copyright 2005 Balatoni Denes
+ * Copyright 2006 Loren Merritt
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "attributes.h"
+#include "float_dsp.h"
+#include "mem.h"
+
+static void vector_fmul_c(float *dst, const float *src0, const float *src1,
+                          int len)
+{
+    int i;
+    for (i = 0; i < len; i++)
+        dst[i] = src0[i] * src1[i];
+}
+
+static void vector_dmul_c(double *dst, const double *src0, const double *src1,
+                          int len)
+{
+    int i;
+    for (i = 0; i < len; i++)
+        dst[i] = src0[i] * src1[i];
+}
+
+static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
+                                 int len)
+{
+    int i;
+    for (i = 0; i < len; i++)
+        dst[i] += src[i] * mul;
+}
+
+static void vector_dmac_scalar_c(double *dst, const double *src, double mul,
+                                 int len)
+{
+    int i;
+    for (i = 0; i < len; i++)
+        dst[i] += src[i] * mul;
+}
+
+static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
+                                 int len)
+{
+    int i;
+    for (i = 0; i < len; i++)
+        dst[i] = src[i] * mul;
+}
+
+static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
+                                 int len)
+{
+    int i;
+    for (i = 0; i < len; i++)
+        dst[i] = src[i] * mul;
+}
+
+static void vector_fmul_window_c(float *dst, const float *src0,
+                                 const float *src1, const float *win, int len)
+{
+    int i, j;
+
+    dst  += len;
+    win  += len;
+    src0 += len;
+
+    for (i = -len, j = len - 1; i < 0; i++, j--) {
+        float s0 = src0[i];
+        float s1 = src1[j];
+        float wi = win[i];
+        float wj = win[j];
+        dst[i] = s0 * wj - s1 * wi;
+        dst[j] = s0 * wi + s1 * wj;
+    }
+}
+
+static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,
+                              const float *src2, int len){
+    int i;
+
+    for (i = 0; i < len; i++)
+        dst[i] = src0[i] * src1[i] + src2[i];
+}
+
+static void vector_fmul_reverse_c(float *dst, const float *src0,
+                                  const float *src1, int len)
+{
+    int i;
+
+    src1 += len-1;
+    for (i = 0; i < len; i++)
+        dst[i] = src0[i] * src1[-i];
+}
+
+static void butterflies_float_c(float *av_restrict v1, float *av_restrict v2,
+                                int len)
+{
+    int i;
+
+    for (i = 0; i < len; i++) {
+        float t = v1[i] - v2[i];
+        v1[i] += v2[i];
+        v2[i] = t;
+    }
+}
+
+float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len)
+{
+    float p = 0.0;
+    int i;
+
+    for (i = 0; i < len; i++)
+        p += v1[i] * v2[i];
+
+    return p;
+}
+
+av_cold AVFloatDSPContext *avpriv_float_dsp_alloc(int bit_exact)
+{
+    AVFloatDSPContext *fdsp = av_mallocz(sizeof(AVFloatDSPContext));
+    if (!fdsp)
+        return NULL;
+
+    fdsp->vector_fmul = vector_fmul_c;
+    fdsp->vector_dmul = vector_dmul_c;
+    fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
+    fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
+    fdsp->vector_dmac_scalar = vector_dmac_scalar_c;
+    fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
+    fdsp->vector_fmul_window = vector_fmul_window_c;
+    fdsp->vector_fmul_add = vector_fmul_add_c;
+    fdsp->vector_fmul_reverse = vector_fmul_reverse_c;
+    fdsp->butterflies_float = butterflies_float_c;
+    fdsp->scalarproduct_float = avpriv_scalarproduct_float_c;
+
+    if (ARCH_AARCH64)
+        ff_float_dsp_init_aarch64(fdsp);
+    if (ARCH_ARM)
+        ff_float_dsp_init_arm(fdsp);
+    if (ARCH_PPC)
+        ff_float_dsp_init_ppc(fdsp, bit_exact);
+    if (ARCH_X86)
+        ff_float_dsp_init_x86(fdsp);
+    if (ARCH_MIPS)
+        ff_float_dsp_init_mips(fdsp);
+    return fdsp;
+}
diff --git a/media/ffvpx/libavutil/float_dsp.h b/media/ffvpx/libavutil/float_dsp.h
new file mode 100644
index 0000000000..9c664592bd
--- /dev/null
+++ b/media/ffvpx/libavutil/float_dsp.h
@@ -0,0 +1,218 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_FLOAT_DSP_H
+#define AVUTIL_FLOAT_DSP_H
+
+#include "config.h"
+
+typedef struct AVFloatDSPContext {
+    /**
+     * Calculate the entry wise product of two vectors of floats and store the result in
+     * a vector of floats.
+     *
+     * @param dst  output vector
+     *             constraints: 32-byte aligned
+     * @param src0 first input vector
+     *             constraints: 32-byte aligned
+     * @param src1 second input vector
+     *             constraints: 32-byte aligned
+     * @param len  number of elements in the input
+     *             constraints: multiple of 16
+     */
+    void (*vector_fmul)(float *dst, const float *src0, const float *src1,
+                        int len);
+
+    /**
+     * Multiply a vector of floats by a scalar float and add to
+     * destination vector.  Source and destination vectors must
+     * overlap exactly or not at all.
+     *
+     * @param dst result vector
+     *            constraints: 32-byte aligned
+     * @param src input vector
+     *            constraints: 32-byte aligned
+     * @param mul scalar value
+     * @param len length of vector
+     *            constraints: multiple of 16
+     */
+    void (*vector_fmac_scalar)(float *dst, const float *src, float mul,
+                               int len);
+
+    /**
+     * Multiply a vector of doubles by a scalar double and add to
+     * destination vector.  Source and destination vectors must
+     * overlap exactly or not at all.
+     *
+     * @param dst result vector
+     *            constraints: 32-byte aligned
+     * @param src input vector
+     *            constraints: 32-byte aligned
+     * @param mul scalar value
+     * @param len length of vector
+     *            constraints: multiple of 16
+     */
+    void (*vector_dmac_scalar)(double *dst, const double *src, double mul,
+                               int len);
+
+    /**
+     * Multiply a vector of floats by a scalar float.  Source and
+     * destination vectors must overlap exactly or not at all.
+     *
+     * @param dst result vector
+     *            constraints: 16-byte aligned
+     * @param src input vector
+     *            constraints: 16-byte aligned
+     * @param mul scalar value
+     * @param len length of vector
+     *            constraints: multiple of 4
+     */
+    void (*vector_fmul_scalar)(float *dst, const float *src, float mul,
+                               int len);
+
+    /**
+     * Multiply a vector of double by a scalar double.  Source and
+     * destination vectors must overlap exactly or not at all.
+     *
+     * @param dst result vector
+     *            constraints: 32-byte aligned
+     * @param src input vector
+     *            constraints: 32-byte aligned
+     * @param mul scalar value
+     * @param len length of vector
+     *            constraints: multiple of 8
+     */
+    void (*vector_dmul_scalar)(double *dst, const double *src, double mul,
+                               int len);
+
+    /**
+     * Overlap/add with window function.
+     * Used primarily by MDCT-based audio codecs.
+     * Source and destination vectors must overlap exactly or not at all.
+     *
+     * @param dst  result vector
+     *             constraints: 16-byte aligned
+     * @param src0 first source vector
+     *             constraints: 16-byte aligned
+     * @param src1 second source vector
+     *             constraints: 16-byte aligned
+     * @param win  half-window vector
+     *             constraints: 16-byte aligned
+     * @param len  length of vector
+     *             constraints: multiple of 4
+     */
+    void (*vector_fmul_window)(float *dst, const float *src0,
+                               const float *src1, const float *win, int len);
+
+    /**
+     * Calculate the entry wise product of two vectors of floats, add a third vector of
+     * floats and store the result in a vector of floats.
+     *
+     * @param dst  output vector
+     *             constraints: 32-byte aligned
+     * @param src0 first input vector
+     *             constraints: 32-byte aligned
+     * @param src1 second input vector
+     *             constraints: 32-byte aligned
+     * @param src2 third input vector
+     *             constraints: 32-byte aligned
+     * @param len  number of elements in the input
+     *             constraints: multiple of 16
+     */
+    void (*vector_fmul_add)(float *dst, const float *src0, const float *src1,
+                            const float *src2, int len);
+
+    /**
+     * Calculate the entry wise product of two vectors of floats, and store the result
+     * in a vector of floats. The second vector of floats is iterated over
+     * in reverse order.
+     *
+     * @param dst  output vector
+     *             constraints: 32-byte aligned
+     * @param src0 first input vector
+     *             constraints: 32-byte aligned
+     * @param src1 second input vector
+     *             constraints: 32-byte aligned
+     * @param len  number of elements in the input
+     *             constraints: multiple of 16
+     */
+    void (*vector_fmul_reverse)(float *dst, const float *src0,
+                                const float *src1, int len);
+
+    /**
+     * Calculate the sum and difference of two vectors of floats.
+     *
+     * @param v1  first input vector, sum output, 16-byte aligned
+     * @param v2  second input vector, difference output, 16-byte aligned
+     * @param len length of vectors, multiple of 4
+     */
+    void (*butterflies_float)(float *av_restrict v1, float *av_restrict v2, int len);
+
+    /**
+     * Calculate the scalar product of two vectors of floats.
+     *
+     * @param v1  first vector, 16-byte aligned
+     * @param v2  second vector, 16-byte aligned
+     * @param len length of vectors, multiple of 4
+     *
+     * @return sum of elementwise products
+     */
+    float (*scalarproduct_float)(const float *v1, const float *v2, int len);
+
+    /**
+     * Calculate the entry wise product of two vectors of doubles and store the result in
+     * a vector of doubles.
+     *
+     * @param dst  output vector
+     *             constraints: 32-byte aligned
+     * @param src0 first input vector
+     *             constraints: 32-byte aligned
+     * @param src1 second input vector
+     *             constraints: 32-byte aligned
+     * @param len  number of elements in the input
+     *             constraints: multiple of 16
+     */
+    void (*vector_dmul)(double *dst, const double *src0, const double *src1,
+                        int len);
+} AVFloatDSPContext;
+
+/**
+ * Return the scalar product of two vectors.
+ *
+ * @param v1  first input vector
+ * @param v2  first input vector
+ * @param len number of elements
+ *
+ * @return sum of elementwise products
+ */
+float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len);
+
+void ff_float_dsp_init_aarch64(AVFloatDSPContext *fdsp);
+void ff_float_dsp_init_arm(AVFloatDSPContext *fdsp);
+void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int strict);
+void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp);
+void ff_float_dsp_init_mips(AVFloatDSPContext *fdsp);
+
+/**
+ * Allocate a float DSP context.
+ *
+ * @param strict  setting to non-zero avoids using functions which may not be IEEE-754 compliant
+ */
+AVFloatDSPContext *avpriv_float_dsp_alloc(int strict);
+
+#endif /* AVUTIL_FLOAT_DSP_H */
diff --git a/media/ffvpx/libavutil/frame.c b/media/ffvpx/libavutil/frame.c
new file mode 100644
index 0000000000..dcf1fc3d17
--- /dev/null
+++ b/media/ffvpx/libavutil/frame.c
@@ -0,0 +1,947 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "channel_layout.h"
+#include "avassert.h"
+#include "buffer.h"
+#include "common.h"
+#include "dict.h"
+#include "frame.h"
+#include "imgutils.h"
+#include "mem.h"
+#include "samplefmt.h"
+
+#if FF_API_FRAME_GET_SET
+MAKE_ACCESSORS(AVFrame, frame, int64_t, best_effort_timestamp)
+MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_duration)
+MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_pos)
+MAKE_ACCESSORS(AVFrame, frame, int64_t, channel_layout)
+MAKE_ACCESSORS(AVFrame, frame, int,     channels)
+MAKE_ACCESSORS(AVFrame, frame, int,     sample_rate)
+MAKE_ACCESSORS(AVFrame, frame, AVDictionary *, metadata)
+MAKE_ACCESSORS(AVFrame, frame, int,     decode_error_flags)
+MAKE_ACCESSORS(AVFrame, frame, int,     pkt_size)
+MAKE_ACCESSORS(AVFrame, frame, enum AVColorSpace, colorspace)
+MAKE_ACCESSORS(AVFrame, frame, enum AVColorRange, color_range)
+#endif
+
+#define CHECK_CHANNELS_CONSISTENCY(frame) \
+    av_assert2(!(frame)->channel_layout || \
+               (frame)->channels == \
+               av_get_channel_layout_nb_channels((frame)->channel_layout))
+
+#if FF_API_FRAME_QP
+struct qp_properties {
+    int stride;
+    int type;
+};
+
+int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type)
+{
+    struct qp_properties *p;
+    AVFrameSideData *sd;
+    AVBufferRef *ref;
+
+FF_DISABLE_DEPRECATION_WARNINGS
+    av_buffer_unref(&f->qp_table_buf);
+
+    f->qp_table_buf = buf;
+    f->qscale_table = buf->data;
+    f->qstride      = stride;
+    f->qscale_type  = qp_type;
+FF_ENABLE_DEPRECATION_WARNINGS
+
+    av_frame_remove_side_data(f, AV_FRAME_DATA_QP_TABLE_PROPERTIES);
+    av_frame_remove_side_data(f, AV_FRAME_DATA_QP_TABLE_DATA);
+
+    ref = av_buffer_ref(buf);
+    if (!av_frame_new_side_data_from_buf(f, AV_FRAME_DATA_QP_TABLE_DATA, ref)) {
+        av_buffer_unref(&ref);
+        return AVERROR(ENOMEM);
+    }
+
+    sd = av_frame_new_side_data(f, AV_FRAME_DATA_QP_TABLE_PROPERTIES,
+                                sizeof(struct qp_properties));
+    if (!sd)
+        return AVERROR(ENOMEM);
+
+    p = (struct qp_properties *)sd->data;
+    p->stride = stride;
+    p->type = qp_type;
+
+    return 0;
+}
+
+int8_t *av_frame_get_qp_table(AVFrame *f, int *stride, int *type)
+{
+    AVBufferRef *buf = NULL;
+
+    *stride = 0;
+    *type   = 0;
+
+FF_DISABLE_DEPRECATION_WARNINGS
+    if (f->qp_table_buf) {
+        *stride = f->qstride;
+        *type   = f->qscale_type;
+        buf     = f->qp_table_buf;
+FF_ENABLE_DEPRECATION_WARNINGS
+    } else {
+        AVFrameSideData *sd;
+        struct qp_properties *p;
+        sd = av_frame_get_side_data(f, AV_FRAME_DATA_QP_TABLE_PROPERTIES);
+        if (!sd)
+            return NULL;
+        p = (struct qp_properties *)sd->data;
+        sd = av_frame_get_side_data(f, AV_FRAME_DATA_QP_TABLE_DATA);
+        if (!sd)
+            return NULL;
+        *stride = p->stride;
+        *type   = p->type;
+        buf     = sd->buf;
+    }
+
+    return buf ? buf->data : NULL;
+}
+#endif
+
+const char *av_get_colorspace_name(enum AVColorSpace val)
+{
+    static const char * const name[] = {
+        [AVCOL_SPC_RGB]       = "GBR",
+        [AVCOL_SPC_BT709]     = "bt709",
+        [AVCOL_SPC_FCC]       = "fcc",
+        [AVCOL_SPC_BT470BG]   = "bt470bg",
+        [AVCOL_SPC_SMPTE170M] = "smpte170m",
+        [AVCOL_SPC_SMPTE240M] = "smpte240m",
+        [AVCOL_SPC_YCOCG]     = "YCgCo",
+    };
+    if ((unsigned)val >= FF_ARRAY_ELEMS(name))
+        return NULL;
+    return name[val];
+}
+
+static void get_frame_defaults(AVFrame *frame)
+{
+    if (frame->extended_data != frame->data)
+        av_freep(&frame->extended_data);
+
+    memset(frame, 0, sizeof(*frame));
+
+    frame->pts                   =
+    frame->pkt_dts               = AV_NOPTS_VALUE;
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
+    frame->pkt_pts               = AV_NOPTS_VALUE;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+    frame->best_effort_timestamp = AV_NOPTS_VALUE;
+    frame->pkt_duration        = 0;
+    frame->pkt_pos             = -1;
+    frame->pkt_size            = -1;
+    frame->key_frame           = 1;
+    frame->sample_aspect_ratio = (AVRational){ 0, 1 };
+    frame->format              = -1; /* unknown */
+    frame->extended_data       = frame->data;
+    frame->color_primaries     = AVCOL_PRI_UNSPECIFIED;
+    frame->color_trc           = AVCOL_TRC_UNSPECIFIED;
+    frame->colorspace          = AVCOL_SPC_UNSPECIFIED;
+    frame->color_range         = AVCOL_RANGE_UNSPECIFIED;
+    frame->chroma_location     = AVCHROMA_LOC_UNSPECIFIED;
+    frame->flags               = 0;
+}
+
+static void free_side_data(AVFrameSideData **ptr_sd)
+{
+    AVFrameSideData *sd = *ptr_sd;
+
+    av_buffer_unref(&sd->buf);
+    av_dict_free(&sd->metadata);
+    av_freep(ptr_sd);
+}
+
+static void wipe_side_data(AVFrame *frame)
+{
+    int i;
+
+    for (i = 0; i < frame->nb_side_data; i++) {
+        free_side_data(&frame->side_data[i]);
+    }
+    frame->nb_side_data = 0;
+
+    av_freep(&frame->side_data);
+}
+
+AVFrame *av_frame_alloc(void)
+{
+    AVFrame *frame = av_mallocz(sizeof(*frame));
+
+    if (!frame)
+        return NULL;
+
+    frame->extended_data = NULL;
+    get_frame_defaults(frame);
+
+    return frame;
+}
+
+void av_frame_free(AVFrame **frame)
+{
+    if (!frame || !*frame)
+        return;
+
+    av_frame_unref(*frame);
+    av_freep(frame);
+}
+
+static int get_video_buffer(AVFrame *frame, int align)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
+    int ret, i, padded_height;
+    int plane_padding = FFMAX(16 + 16/*STRIDE_ALIGN*/, align);
+
+    if (!desc)
+        return AVERROR(EINVAL);
+
+    if ((ret = av_image_check_size(frame->width, frame->height, 0, NULL)) < 0)
+        return ret;
+
+    if (!frame->linesize[0]) {
+        if (align <= 0)
+            align = 32; /* STRIDE_ALIGN. Should be av_cpu_max_align() */
+
+        for(i=1; i<=align; i+=i) {
+            ret = av_image_fill_linesizes(frame->linesize, frame->format,
+                                          FFALIGN(frame->width, i));
+            if (ret < 0)
+                return ret;
+            if (!(frame->linesize[0] & (align-1)))
+                break;
+        }
+
+        for (i = 0; i < 4 && frame->linesize[i]; i++)
+            frame->linesize[i] = FFALIGN(frame->linesize[i], align);
+    }
+
+    padded_height = FFALIGN(frame->height, 32);
+    if ((ret = av_image_fill_pointers(frame->data, frame->format, padded_height,
+                                      NULL, frame->linesize)) < 0)
+        return ret;
+
+    frame->buf[0] = av_buffer_alloc(ret + 4*plane_padding);
+    if (!frame->buf[0]) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    if ((ret = av_image_fill_pointers(frame->data, frame->format, padded_height,
+                                      frame->buf[0]->data, frame->linesize)) < 0)
+        goto fail;
+
+    for (i = 1; i < 4; i++) {
+        if (frame->data[i])
+            frame->data[i] += i * plane_padding;
+    }
+
+    frame->extended_data = frame->data;
+
+    return 0;
+fail:
+    av_frame_unref(frame);
+    return ret;
+}
+
+static int get_audio_buffer(AVFrame *frame, int align)
+{
+    int channels;
+    int planar   = av_sample_fmt_is_planar(frame->format);
+    int planes;
+    int ret, i;
+
+    if (!frame->channels)
+        frame->channels = av_get_channel_layout_nb_channels(frame->channel_layout);
+
+    channels = frame->channels;
+    planes = planar ? channels : 1;
+
+    CHECK_CHANNELS_CONSISTENCY(frame);
+    if (!frame->linesize[0]) {
+        ret = av_samples_get_buffer_size(&frame->linesize[0], channels,
+                                         frame->nb_samples, frame->format,
+                                         align);
+        if (ret < 0)
+            return ret;
+    }
+
+    if (planes > AV_NUM_DATA_POINTERS) {
+        frame->extended_data = av_mallocz_array(planes,
+                                          sizeof(*frame->extended_data));
+        frame->extended_buf  = av_mallocz_array((planes - AV_NUM_DATA_POINTERS),
+                                          sizeof(*frame->extended_buf));
+        if (!frame->extended_data || !frame->extended_buf) {
+            av_freep(&frame->extended_data);
+            av_freep(&frame->extended_buf);
+            return AVERROR(ENOMEM);
+        }
+        frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
+    } else
+        frame->extended_data = frame->data;
+
+    for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
+        frame->buf[i] = av_buffer_alloc(frame->linesize[0]);
+        if (!frame->buf[i]) {
+            av_frame_unref(frame);
+            return AVERROR(ENOMEM);
+        }
+        frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
+    }
+    for (i = 0; i < planes - AV_NUM_DATA_POINTERS; i++) {
+        frame->extended_buf[i] = av_buffer_alloc(frame->linesize[0]);
+        if (!frame->extended_buf[i]) {
+            av_frame_unref(frame);
+            return AVERROR(ENOMEM);
+        }
+        frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
+    }
+    return 0;
+
+}
+
+int av_frame_get_buffer(AVFrame *frame, int align)
+{
+    if (frame->format < 0)
+        return AVERROR(EINVAL);
+
+    if (frame->width > 0 && frame->height > 0)
+        return get_video_buffer(frame, align);
+    else if (frame->nb_samples > 0 && (frame->channel_layout || frame->channels > 0))
+        return get_audio_buffer(frame, align);
+
+    return AVERROR(EINVAL);
+}
+
+static int frame_copy_props(AVFrame *dst, const AVFrame *src, int force_copy)
+{
+    int i;
+
+    dst->key_frame              = src->key_frame;
+    dst->pict_type              = src->pict_type;
+    dst->sample_aspect_ratio    = src->sample_aspect_ratio;
+    dst->crop_top               = src->crop_top;
+    dst->crop_bottom            = src->crop_bottom;
+    dst->crop_left              = src->crop_left;
+    dst->crop_right             = src->crop_right;
+    dst->pts                    = src->pts;
+    dst->repeat_pict            = src->repeat_pict;
+    dst->interlaced_frame       = src->interlaced_frame;
+    dst->top_field_first        = src->top_field_first;
+    dst->palette_has_changed    = src->palette_has_changed;
+    dst->sample_rate            = src->sample_rate;
+    dst->opaque                 = src->opaque;
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
+    dst->pkt_pts                = src->pkt_pts;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+    dst->pkt_dts                = src->pkt_dts;
+    dst->pkt_pos                = src->pkt_pos;
+    dst->pkt_size               = src->pkt_size;
+    dst->pkt_duration           = src->pkt_duration;
+    dst->reordered_opaque       = src->reordered_opaque;
+    dst->quality                = src->quality;
+    dst->best_effort_timestamp  = src->best_effort_timestamp;
+    dst->coded_picture_number   = src->coded_picture_number;
+    dst->display_picture_number = src->display_picture_number;
+    dst->flags                  = src->flags;
+    dst->decode_error_flags     = src->decode_error_flags;
+    dst->color_primaries        = src->color_primaries;
+    dst->color_trc              = src->color_trc;
+    dst->colorspace             = src->colorspace;
+    dst->color_range            = src->color_range;
+    dst->chroma_location        = src->chroma_location;
+
+    av_dict_copy(&dst->metadata, src->metadata, 0);
+
+#if FF_API_ERROR_FRAME
+FF_DISABLE_DEPRECATION_WARNINGS
+    memcpy(dst->error, src->error, sizeof(dst->error));
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
+    for (i = 0; i < src->nb_side_data; i++) {
+        const AVFrameSideData *sd_src = src->side_data[i];
+        AVFrameSideData *sd_dst;
+        if (   sd_src->type == AV_FRAME_DATA_PANSCAN
+            && (src->width != dst->width || src->height != dst->height))
+            continue;
+        if (force_copy) {
+            sd_dst = av_frame_new_side_data(dst, sd_src->type,
+                                            sd_src->size);
+            if (!sd_dst) {
+                wipe_side_data(dst);
+                return AVERROR(ENOMEM);
+            }
+            memcpy(sd_dst->data, sd_src->data, sd_src->size);
+        } else {
+            AVBufferRef *ref = av_buffer_ref(sd_src->buf);
+            sd_dst = av_frame_new_side_data_from_buf(dst, sd_src->type, ref);
+            if (!sd_dst) {
+                av_buffer_unref(&ref);
+                wipe_side_data(dst);
+                return AVERROR(ENOMEM);
+            }
+        }
+        av_dict_copy(&sd_dst->metadata, sd_src->metadata, 0);
+    }
+
+#if FF_API_FRAME_QP
+FF_DISABLE_DEPRECATION_WARNINGS
+    dst->qscale_table = NULL;
+    dst->qstride      = 0;
+    dst->qscale_type  = 0;
+    av_buffer_unref(&dst->qp_table_buf);
+    if (src->qp_table_buf) {
+        dst->qp_table_buf = av_buffer_ref(src->qp_table_buf);
+        if (dst->qp_table_buf) {
+            dst->qscale_table = dst->qp_table_buf->data;
+            dst->qstride      = src->qstride;
+            dst->qscale_type  = src->qscale_type;
+        }
+    }
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
+    av_buffer_unref(&dst->opaque_ref);
+    av_buffer_unref(&dst->private_ref);
+    if (src->opaque_ref) {
+        dst->opaque_ref = av_buffer_ref(src->opaque_ref);
+        if (!dst->opaque_ref)
+            return AVERROR(ENOMEM);
+    }
+    if (src->private_ref) {
+        dst->private_ref = av_buffer_ref(src->private_ref);
+        if (!dst->private_ref)
+            return AVERROR(ENOMEM);
+    }
+    return 0;
+}
+
+int av_frame_ref(AVFrame *dst, const AVFrame *src)
+{
+    int i, ret = 0;
+
+    av_assert1(dst->width == 0 && dst->height == 0);
+    av_assert1(dst->channels == 0);
+
+    dst->format         = src->format;
+    dst->width          = src->width;
+    dst->height         = src->height;
+    dst->channels       = src->channels;
+    dst->channel_layout = src->channel_layout;
+    dst->nb_samples     = src->nb_samples;
+
+    ret = frame_copy_props(dst, src, 0);
+    if (ret < 0)
+        return ret;
+
+    /* duplicate the frame data if it's not refcounted */
+    if (!src->buf[0]) {
+        ret = av_frame_get_buffer(dst, 32);
+        if (ret < 0)
+            return ret;
+
+        ret = av_frame_copy(dst, src);
+        if (ret < 0)
+            av_frame_unref(dst);
+
+        return ret;
+    }
+
+    /* ref the buffers */
+    for (i = 0; i < FF_ARRAY_ELEMS(src->buf); i++) {
+        if (!src->buf[i])
+            continue;
+        dst->buf[i] = av_buffer_ref(src->buf[i]);
+        if (!dst->buf[i]) {
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
+    }
+
+    if (src->extended_buf) {
+        dst->extended_buf = av_mallocz_array(sizeof(*dst->extended_buf),
+                                       src->nb_extended_buf);
+        if (!dst->extended_buf) {
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
+        dst->nb_extended_buf = src->nb_extended_buf;
+
+        for (i = 0; i < src->nb_extended_buf; i++) {
+            dst->extended_buf[i] = av_buffer_ref(src->extended_buf[i]);
+            if (!dst->extended_buf[i]) {
+                ret = AVERROR(ENOMEM);
+                goto fail;
+            }
+        }
+    }
+
+    if (src->hw_frames_ctx) {
+        dst->hw_frames_ctx = av_buffer_ref(src->hw_frames_ctx);
+        if (!dst->hw_frames_ctx) {
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
+    }
+
+    /* duplicate extended data */
+    if (src->extended_data != src->data) {
+        int ch = src->channels;
+
+        if (!ch) {
+            ret = AVERROR(EINVAL);
+            goto fail;
+        }
+        CHECK_CHANNELS_CONSISTENCY(src);
+
+        dst->extended_data = av_malloc_array(sizeof(*dst->extended_data), ch);
+        if (!dst->extended_data) {
+            ret = AVERROR(ENOMEM);
+            goto fail;
+        }
+        memcpy(dst->extended_data, src->extended_data, sizeof(*src->extended_data) * ch);
+    } else
+        dst->extended_data = dst->data;
+
+    memcpy(dst->data,     src->data,     sizeof(src->data));
+    memcpy(dst->linesize, src->linesize, sizeof(src->linesize));
+
+    return 0;
+
+fail:
+    av_frame_unref(dst);
+    return ret;
+}
+
+AVFrame *av_frame_clone(const AVFrame *src)
+{
+    AVFrame *ret = av_frame_alloc();
+
+    if (!ret)
+        return NULL;
+
+    if (av_frame_ref(ret, src) < 0)
+        av_frame_free(&ret);
+
+    return ret;
+}
+
+void av_frame_unref(AVFrame *frame)
+{
+    int i;
+
+    if (!frame)
+        return;
+
+    wipe_side_data(frame);
+
+    for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++)
+        av_buffer_unref(&frame->buf[i]);
+    for (i = 0; i < frame->nb_extended_buf; i++)
+        av_buffer_unref(&frame->extended_buf[i]);
+    av_freep(&frame->extended_buf);
+    av_dict_free(&frame->metadata);
+#if FF_API_FRAME_QP
+FF_DISABLE_DEPRECATION_WARNINGS
+    av_buffer_unref(&frame->qp_table_buf);
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
+    av_buffer_unref(&frame->hw_frames_ctx);
+
+    av_buffer_unref(&frame->opaque_ref);
+    av_buffer_unref(&frame->private_ref);
+
+    get_frame_defaults(frame);
+}
+
+void av_frame_move_ref(AVFrame *dst, AVFrame *src)
+{
+    av_assert1(dst->width == 0 && dst->height == 0);
+    av_assert1(dst->channels == 0);
+
+    *dst = *src;
+    if (src->extended_data == src->data)
+        dst->extended_data = dst->data;
+    memset(src, 0, sizeof(*src));
+    get_frame_defaults(src);
+}
+
+int av_frame_is_writable(AVFrame *frame)
+{
+    int i, ret = 1;
+
+    /* assume non-refcounted frames are not writable */
+    if (!frame->buf[0])
+        return 0;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++)
+        if (frame->buf[i])
+            ret &= !!av_buffer_is_writable(frame->buf[i]);
+    for (i = 0; i < frame->nb_extended_buf; i++)
+        ret &= !!av_buffer_is_writable(frame->extended_buf[i]);
+
+    return ret;
+}
+
+int av_frame_make_writable(AVFrame *frame)
+{
+    AVFrame tmp;
+    int ret;
+
+    if (!frame->buf[0])
+        return AVERROR(EINVAL);
+
+    if (av_frame_is_writable(frame))
+        return 0;
+
+    memset(&tmp, 0, sizeof(tmp));
+    tmp.format         = frame->format;
+    tmp.width          = frame->width;
+    tmp.height         = frame->height;
+    tmp.channels       = frame->channels;
+    tmp.channel_layout = frame->channel_layout;
+    tmp.nb_samples     = frame->nb_samples;
+    ret = av_frame_get_buffer(&tmp, 32);
+    if (ret < 0)
+        return ret;
+
+    ret = av_frame_copy(&tmp, frame);
+    if (ret < 0) {
+        av_frame_unref(&tmp);
+        return ret;
+    }
+
+    ret = av_frame_copy_props(&tmp, frame);
+    if (ret < 0) {
+        av_frame_unref(&tmp);
+        return ret;
+    }
+
+    av_frame_unref(frame);
+
+    *frame = tmp;
+    if (tmp.data == tmp.extended_data)
+        frame->extended_data = frame->data;
+
+    return 0;
+}
+
+int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
+{
+    return frame_copy_props(dst, src, 1);
+}
+
+AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane)
+{
+    uint8_t *data;
+    int planes, i;
+
+    if (frame->nb_samples) {
+        int channels = frame->channels;
+        if (!channels)
+            return NULL;
+        CHECK_CHANNELS_CONSISTENCY(frame);
+        planes = av_sample_fmt_is_planar(frame->format) ? channels : 1;
+    } else
+        planes = 4;
+
+    if (plane < 0 || plane >= planes || !frame->extended_data[plane])
+        return NULL;
+    data = frame->extended_data[plane];
+
+    for (i = 0; i < FF_ARRAY_ELEMS(frame->buf) && frame->buf[i]; i++) {
+        AVBufferRef *buf = frame->buf[i];
+        if (data >= buf->data && data < buf->data + buf->size)
+            return buf;
+    }
+    for (i = 0; i < frame->nb_extended_buf; i++) {
+        AVBufferRef *buf = frame->extended_buf[i];
+        if (data >= buf->data && data < buf->data + buf->size)
+            return buf;
+    }
+    return NULL;
+}
+
+AVFrameSideData *av_frame_new_side_data_from_buf(AVFrame *frame,
+                                                 enum AVFrameSideDataType type,
+                                                 AVBufferRef *buf)
+{
+    AVFrameSideData *ret, **tmp;
+
+    if (!buf)
+        return NULL;
+
+    if (frame->nb_side_data > INT_MAX / sizeof(*frame->side_data) - 1)
+        return NULL;
+
+    tmp = av_realloc(frame->side_data,
+                     (frame->nb_side_data + 1) * sizeof(*frame->side_data));
+    if (!tmp)
+        return NULL;
+    frame->side_data = tmp;
+
+    ret = av_mallocz(sizeof(*ret));
+    if (!ret)
+        return NULL;
+
+    ret->buf = buf;
+    ret->data = ret->buf->data;
+    ret->size = buf->size;
+    ret->type = type;
+
+    frame->side_data[frame->nb_side_data++] = ret;
+
+    return ret;
+}
+
+AVFrameSideData *av_frame_new_side_data(AVFrame *frame,
+                                        enum AVFrameSideDataType type,
+                                        int size)
+{
+    AVFrameSideData *ret;
+    AVBufferRef *buf = av_buffer_alloc(size);
+    ret = av_frame_new_side_data_from_buf(frame, type, buf);
+    if (!ret)
+        av_buffer_unref(&buf);
+    return ret;
+}
+
+AVFrameSideData *av_frame_get_side_data(const AVFrame *frame,
+                                        enum AVFrameSideDataType type)
+{
+    int i;
+
+    for (i = 0; i < frame->nb_side_data; i++) {
+        if (frame->side_data[i]->type == type)
+            return frame->side_data[i];
+    }
+    return NULL;
+}
+
+static int frame_copy_video(AVFrame *dst, const AVFrame *src)
+{
+    const uint8_t *src_data[4];
+    int i, planes;
+
+    if (dst->width  < src->width ||
+        dst->height < src->height)
+        return AVERROR(EINVAL);
+
+    planes = av_pix_fmt_count_planes(dst->format);
+    for (i = 0; i < planes; i++)
+        if (!dst->data[i] || !src->data[i])
+            return AVERROR(EINVAL);
+
+    memcpy(src_data, src->data, sizeof(src_data));
+    av_image_copy(dst->data, dst->linesize,
+                  src_data, src->linesize,
+                  dst->format, src->width, src->height);
+
+    return 0;
+}
+
+static int frame_copy_audio(AVFrame *dst, const AVFrame *src)
+{
+    int planar   = av_sample_fmt_is_planar(dst->format);
+    int channels = dst->channels;
+    int planes   = planar ? channels : 1;
+    int i;
+
+    if (dst->nb_samples     != src->nb_samples ||
+        dst->channels       != src->channels ||
+        dst->channel_layout != src->channel_layout)
+        return AVERROR(EINVAL);
+
+    CHECK_CHANNELS_CONSISTENCY(src);
+
+    for (i = 0; i < planes; i++)
+        if (!dst->extended_data[i] || !src->extended_data[i])
+            return AVERROR(EINVAL);
+
+    av_samples_copy(dst->extended_data, src->extended_data, 0, 0,
+                    dst->nb_samples, channels, dst->format);
+
+    return 0;
+}
+
+int av_frame_copy(AVFrame *dst, const AVFrame *src)
+{
+    if (dst->format != src->format || dst->format < 0)
+        return AVERROR(EINVAL);
+
+    if (dst->width > 0 && dst->height > 0)
+        return frame_copy_video(dst, src);
+    else if (dst->nb_samples > 0 && dst->channels > 0)
+        return frame_copy_audio(dst, src);
+
+    return AVERROR(EINVAL);
+}
+
+void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type)
+{
+    int i;
+
+    for (i = 0; i < frame->nb_side_data; i++) {
+        AVFrameSideData *sd = frame->side_data[i];
+        if (sd->type == type) {
+            free_side_data(&frame->side_data[i]);
+            frame->side_data[i] = frame->side_data[frame->nb_side_data - 1];
+            frame->nb_side_data--;
+        }
+    }
+}
+
+const char *av_frame_side_data_name(enum AVFrameSideDataType type)
+{
+    switch(type) {
+    case AV_FRAME_DATA_PANSCAN:         return "AVPanScan";
+    case AV_FRAME_DATA_A53_CC:          return "ATSC A53 Part 4 Closed Captions";
+    case AV_FRAME_DATA_STEREO3D:        return "Stereo 3D";
+    case AV_FRAME_DATA_MATRIXENCODING:  return "AVMatrixEncoding";
+    case AV_FRAME_DATA_DOWNMIX_INFO:    return "Metadata relevant to a downmix procedure";
+    case AV_FRAME_DATA_REPLAYGAIN:      return "AVReplayGain";
+    case AV_FRAME_DATA_DISPLAYMATRIX:   return "3x3 displaymatrix";
+    case AV_FRAME_DATA_AFD:             return "Active format description";
+    case AV_FRAME_DATA_MOTION_VECTORS:  return "Motion vectors";
+    case AV_FRAME_DATA_SKIP_SAMPLES:    return "Skip samples";
+    case AV_FRAME_DATA_AUDIO_SERVICE_TYPE:          return "Audio service type";
+    case AV_FRAME_DATA_MASTERING_DISPLAY_METADATA:  return "Mastering display metadata";
+    case AV_FRAME_DATA_CONTENT_LIGHT_LEVEL:         return "Content light level metadata";
+    case AV_FRAME_DATA_GOP_TIMECODE:                return "GOP timecode";
+    case AV_FRAME_DATA_S12M_TIMECODE:               return "SMPTE 12-1 timecode";
+    case AV_FRAME_DATA_SPHERICAL:                   return "Spherical Mapping";
+    case AV_FRAME_DATA_ICC_PROFILE:                 return "ICC profile";
+#if FF_API_FRAME_QP
+    case AV_FRAME_DATA_QP_TABLE_PROPERTIES:         return "QP table properties";
+    case AV_FRAME_DATA_QP_TABLE_DATA:               return "QP table data";
+#endif
+    case AV_FRAME_DATA_DYNAMIC_HDR_PLUS: return "HDR Dynamic Metadata SMPTE2094-40 (HDR10+)";
+    case AV_FRAME_DATA_REGIONS_OF_INTEREST: return "Regions Of Interest";
+    }
+    return NULL;
+}
+
+static int calc_cropping_offsets(size_t offsets[4], const AVFrame *frame,
+                                 const AVPixFmtDescriptor *desc)
+{
+    int i, j;
+
+    for (i = 0; frame->data[i]; i++) {
+        const AVComponentDescriptor *comp = NULL;
+        int shift_x = (i == 1 || i == 2) ? desc->log2_chroma_w : 0;
+        int shift_y = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
+
+        if (desc->flags & (AV_PIX_FMT_FLAG_PAL | FF_PSEUDOPAL) && i == 1) {
+            offsets[i] = 0;
+            break;
+        }
+
+        /* find any component descriptor for this plane */
+        for (j = 0; j < desc->nb_components; j++) {
+            if (desc->comp[j].plane == i) {
+                comp = &desc->comp[j];
+                break;
+            }
+        }
+        if (!comp)
+            return AVERROR_BUG;
+
+        offsets[i] = (frame->crop_top  >> shift_y) * frame->linesize[i] +
+                     (frame->crop_left >> shift_x) * comp->step;
+    }
+
+    return 0;
+}
+
+int av_frame_apply_cropping(AVFrame *frame, int flags)
+{
+    const AVPixFmtDescriptor *desc;
+    size_t offsets[4];
+    int i;
+
+    if (!(frame->width > 0 && frame->height > 0))
+        return AVERROR(EINVAL);
+
+    if (frame->crop_left >= INT_MAX - frame->crop_right        ||
+        frame->crop_top  >= INT_MAX - frame->crop_bottom       ||
+        (frame->crop_left + frame->crop_right) >= frame->width ||
+        (frame->crop_top + frame->crop_bottom) >= frame->height)
+        return AVERROR(ERANGE);
+
+    desc = av_pix_fmt_desc_get(frame->format);
+    if (!desc)
+        return AVERROR_BUG;
+
+    /* Apply just the right/bottom cropping for hwaccel formats. Bitstream
+     * formats cannot be easily handled here either (and corresponding decoders
+     * should not export any cropping anyway), so do the same for those as well.
+     * */
+    if (desc->flags & (AV_PIX_FMT_FLAG_BITSTREAM | AV_PIX_FMT_FLAG_HWACCEL)) {
+        frame->width      -= frame->crop_right;
+        frame->height     -= frame->crop_bottom;
+        frame->crop_right  = 0;
+        frame->crop_bottom = 0;
+        return 0;
+    }
+
+    /* calculate the offsets for each plane */
+    calc_cropping_offsets(offsets, frame, desc);
+
+    /* adjust the offsets to avoid breaking alignment */
+    if (!(flags & AV_FRAME_CROP_UNALIGNED)) {
+        int log2_crop_align = frame->crop_left ? ff_ctz(frame->crop_left) : INT_MAX;
+        int min_log2_align = INT_MAX;
+
+        for (i = 0; frame->data[i]; i++) {
+            int log2_align = offsets[i] ? ff_ctz(offsets[i]) : INT_MAX;
+            min_log2_align = FFMIN(log2_align, min_log2_align);
+        }
+
+        /* we assume, and it should always be true, that the data alignment is
+         * related to the cropping alignment by a constant power-of-2 factor */
+        if (log2_crop_align < min_log2_align)
+            return AVERROR_BUG;
+
+        if (min_log2_align < 5) {
+            frame->crop_left &= ~((1 << (5 + log2_crop_align - min_log2_align)) - 1);
+            calc_cropping_offsets(offsets, frame, desc);
+        }
+    }
+
+    for (i = 0; frame->data[i]; i++)
+        frame->data[i] += offsets[i];
+
+    frame->width      -= (frame->crop_left + frame->crop_right);
+    frame->height     -= (frame->crop_top  + frame->crop_bottom);
+    frame->crop_left   = 0;
+    frame->crop_right  = 0;
+    frame->crop_top    = 0;
+    frame->crop_bottom = 0;
+
+    return 0;
+}
diff --git a/media/ffvpx/libavutil/frame.h b/media/ffvpx/libavutil/frame.h
new file mode 100644
index 0000000000..5d3231e7bb
--- /dev/null
+++ b/media/ffvpx/libavutil/frame.h
@@ -0,0 +1,971 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @ingroup lavu_frame
+ * reference-counted frame API
+ */
+
+#ifndef AVUTIL_FRAME_H
+#define AVUTIL_FRAME_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "avutil.h"
+#include "buffer.h"
+#include "dict.h"
+#include "rational.h"
+#include "samplefmt.h"
+#include "pixfmt.h"
+#include "version.h"
+
+
+/**
+ * @defgroup lavu_frame AVFrame
+ * @ingroup lavu_data
+ *
+ * @{
+ * AVFrame is an abstraction for reference-counted raw multimedia data.
+ */
+
+enum AVFrameSideDataType {
+    /**
+     * The data is the AVPanScan struct defined in libavcodec.
+     */
+    AV_FRAME_DATA_PANSCAN,
+    /**
+     * ATSC A53 Part 4 Closed Captions.
+     * A53 CC bitstream is stored as uint8_t in AVFrameSideData.data.
+     * The number of bytes of CC data is AVFrameSideData.size.
+     */
+    AV_FRAME_DATA_A53_CC,
+    /**
+     * Stereoscopic 3d metadata.
+     * The data is the AVStereo3D struct defined in libavutil/stereo3d.h.
+     */
+    AV_FRAME_DATA_STEREO3D,
+    /**
+     * The data is the AVMatrixEncoding enum defined in libavutil/channel_layout.h.
+     */
+    AV_FRAME_DATA_MATRIXENCODING,
+    /**
+     * Metadata relevant to a downmix procedure.
+     * The data is the AVDownmixInfo struct defined in libavutil/downmix_info.h.
+     */
+    AV_FRAME_DATA_DOWNMIX_INFO,
+    /**
+     * ReplayGain information in the form of the AVReplayGain struct.
+     */
+    AV_FRAME_DATA_REPLAYGAIN,
+    /**
+     * This side data contains a 3x3 transformation matrix describing an affine
+     * transformation that needs to be applied to the frame for correct
+     * presentation.
+     *
+     * See libavutil/display.h for a detailed description of the data.
+     */
+    AV_FRAME_DATA_DISPLAYMATRIX,
+    /**
+     * Active Format Description data consisting of a single byte as specified
+     * in ETSI TS 101 154 using AVActiveFormatDescription enum.
+     */
+    AV_FRAME_DATA_AFD,
+    /**
+     * Motion vectors exported by some codecs (on demand through the export_mvs
+     * flag set in the libavcodec AVCodecContext flags2 option).
+     * The data is the AVMotionVector struct defined in
+     * libavutil/motion_vector.h.
+     */
+    AV_FRAME_DATA_MOTION_VECTORS,
+    /**
+     * Recommmends skipping the specified number of samples. This is exported
+     * only if the "skip_manual" AVOption is set in libavcodec.
+     * This has the same format as AV_PKT_DATA_SKIP_SAMPLES.
+     * @code
+     * u32le number of samples to skip from start of this packet
+     * u32le number of samples to skip from end of this packet
+     * u8    reason for start skip
+     * u8    reason for end   skip (0=padding silence, 1=convergence)
+     * @endcode
+     */
+    AV_FRAME_DATA_SKIP_SAMPLES,
+    /**
+     * This side data must be associated with an audio frame and corresponds to
+     * enum AVAudioServiceType defined in avcodec.h.
+     */
+    AV_FRAME_DATA_AUDIO_SERVICE_TYPE,
+    /**
+     * Mastering display metadata associated with a video frame. The payload is
+     * an AVMasteringDisplayMetadata type and contains information about the
+     * mastering display color volume.
+     */
+    AV_FRAME_DATA_MASTERING_DISPLAY_METADATA,
+    /**
+     * The GOP timecode in 25 bit timecode format. Data format is 64-bit integer.
+     * This is set on the first frame of a GOP that has a temporal reference of 0.
+     */
+    AV_FRAME_DATA_GOP_TIMECODE,
+
+    /**
+     * The data represents the AVSphericalMapping structure defined in
+     * libavutil/spherical.h.
+     */
+    AV_FRAME_DATA_SPHERICAL,
+
+    /**
+     * Content light level (based on CTA-861.3). This payload contains data in
+     * the form of the AVContentLightMetadata struct.
+     */
+    AV_FRAME_DATA_CONTENT_LIGHT_LEVEL,
+
+    /**
+     * The data contains an ICC profile as an opaque octet buffer following the
+     * format described by ISO 15076-1 with an optional name defined in the
+     * metadata key entry "name".
+     */
+    AV_FRAME_DATA_ICC_PROFILE,
+
+#if FF_API_FRAME_QP
+    /**
+     * Implementation-specific description of the format of AV_FRAME_QP_TABLE_DATA.
+     * The contents of this side data are undocumented and internal; use
+     * av_frame_set_qp_table() and av_frame_get_qp_table() to access this in a
+     * meaningful way instead.
+     */
+    AV_FRAME_DATA_QP_TABLE_PROPERTIES,
+
+    /**
+     * Raw QP table data. Its format is described by
+     * AV_FRAME_DATA_QP_TABLE_PROPERTIES. Use av_frame_set_qp_table() and
+     * av_frame_get_qp_table() to access this instead.
+     */
+    AV_FRAME_DATA_QP_TABLE_DATA,
+#endif
+
+    /**
+     * Timecode which conforms to SMPTE ST 12-1. The data is an array of 4 uint32_t
+     * where the first uint32_t describes how many (1-3) of the other timecodes are used.
+     * The timecode format is described in the av_timecode_get_smpte_from_framenum()
+     * function in libavutil/timecode.c.
+     */
+    AV_FRAME_DATA_S12M_TIMECODE,
+
+    /**
+     * HDR dynamic metadata associated with a video frame. The payload is
+     * an AVDynamicHDRPlus type and contains information for color
+     * volume transform - application 4 of SMPTE 2094-40:2016 standard.
+     */
+    AV_FRAME_DATA_DYNAMIC_HDR_PLUS,
+
+    /**
+     * Regions Of Interest, the data is an array of AVRegionOfInterest type, the number of
+     * array element is implied by AVFrameSideData.size / AVRegionOfInterest.self_size.
+     */
+    AV_FRAME_DATA_REGIONS_OF_INTEREST,
+};
+
+enum AVActiveFormatDescription {
+    AV_AFD_SAME         = 8,
+    AV_AFD_4_3          = 9,
+    AV_AFD_16_9         = 10,
+    AV_AFD_14_9         = 11,
+    AV_AFD_4_3_SP_14_9  = 13,
+    AV_AFD_16_9_SP_14_9 = 14,
+    AV_AFD_SP_4_3       = 15,
+};
+
+
+/**
+ * Structure to hold side data for an AVFrame.
+ *
+ * sizeof(AVFrameSideData) is not a part of the public ABI, so new fields may be added
+ * to the end with a minor bump.
+ */
+typedef struct AVFrameSideData {
+    enum AVFrameSideDataType type;
+    uint8_t *data;
+    int      size;
+    AVDictionary *metadata;
+    AVBufferRef *buf;
+} AVFrameSideData;
+
+/**
+ * Structure describing a single Region Of Interest.
+ *
+ * When multiple regions are defined in a single side-data block, they
+ * should be ordered from most to least important - some encoders are only
+ * capable of supporting a limited number of distinct regions, so will have
+ * to truncate the list.
+ *
+ * When overlapping regions are defined, the first region containing a given
+ * area of the frame applies.
+ */
+typedef struct AVRegionOfInterest {
+    /**
+     * Must be set to the size of this data structure (that is,
+     * sizeof(AVRegionOfInterest)).
+     */
+    uint32_t self_size;
+    /**
+     * Distance in pixels from the top edge of the frame to the top and
+     * bottom edges and from the left edge of the frame to the left and
+     * right edges of the rectangle defining this region of interest.
+     *
+     * The constraints on a region are encoder dependent, so the region
+     * actually affected may be slightly larger for alignment or other
+     * reasons.
+     */
+    int top;
+    int bottom;
+    int left;
+    int right;
+    /**
+     * Quantisation offset.
+     *
+     * Must be in the range -1 to +1.  A value of zero indicates no quality
+     * change.  A negative value asks for better quality (less quantisation),
+     * while a positive value asks for worse quality (greater quantisation).
+     *
+     * The range is calibrated so that the extreme values indicate the
+     * largest possible offset - if the rest of the frame is encoded with the
+     * worst possible quality, an offset of -1 indicates that this region
+     * should be encoded with the best possible quality anyway.  Intermediate
+     * values are then interpolated in some codec-dependent way.
+     *
+     * For example, in 10-bit H.264 the quantisation parameter varies between
+     * -12 and 51.  A typical qoffset value of -1/10 therefore indicates that
+     * this region should be encoded with a QP around one-tenth of the full
+     * range better than the rest of the frame.  So, if most of the frame
+     * were to be encoded with a QP of around 30, this region would get a QP
+     * of around 24 (an offset of approximately -1/10 * (51 - -12) = -6.3).
+     * An extreme value of -1 would indicate that this region should be
+     * encoded with the best possible quality regardless of the treatment of
+     * the rest of the frame - that is, should be encoded at a QP of -12.
+     */
+    AVRational qoffset;
+} AVRegionOfInterest;
+
+/**
+ * This structure describes decoded (raw) audio or video data.
+ *
+ * AVFrame must be allocated using av_frame_alloc(). Note that this only
+ * allocates the AVFrame itself, the buffers for the data must be managed
+ * through other means (see below).
+ * AVFrame must be freed with av_frame_free().
+ *
+ * AVFrame is typically allocated once and then reused multiple times to hold
+ * different data (e.g. a single AVFrame to hold frames received from a
+ * decoder). In such a case, av_frame_unref() will free any references held by
+ * the frame and reset it to its original clean state before it
+ * is reused again.
+ *
+ * The data described by an AVFrame is usually reference counted through the
+ * AVBuffer API. The underlying buffer references are stored in AVFrame.buf /
+ * AVFrame.extended_buf. An AVFrame is considered to be reference counted if at
+ * least one reference is set, i.e. if AVFrame.buf[0] != NULL. In such a case,
+ * every single data plane must be contained in one of the buffers in
+ * AVFrame.buf or AVFrame.extended_buf.
+ * There may be a single buffer for all the data, or one separate buffer for
+ * each plane, or anything in between.
+ *
+ * sizeof(AVFrame) is not a part of the public ABI, so new fields may be added
+ * to the end with a minor bump.
+ *
+ * Fields can be accessed through AVOptions, the name string used, matches the
+ * C structure field name for fields accessible through AVOptions. The AVClass
+ * for AVFrame can be obtained from avcodec_get_frame_class()
+ */
+typedef struct AVFrame {
+#define AV_NUM_DATA_POINTERS 8
+    /**
+     * pointer to the picture/channel planes.
+     * This might be different from the first allocated byte
+     *
+     * Some decoders access areas outside 0,0 - width,height, please
+     * see avcodec_align_dimensions2(). Some filters and swscale can read
+     * up to 16 bytes beyond the planes, if these filters are to be used,
+     * then 16 extra bytes must be allocated.
+     *
+     * NOTE: Except for hwaccel formats, pointers not needed by the format
+     * MUST be set to NULL.
+     */
+    uint8_t *data[AV_NUM_DATA_POINTERS];
+
+    /**
+     * For video, size in bytes of each picture line.
+     * For audio, size in bytes of each plane.
+     *
+     * For audio, only linesize[0] may be set. For planar audio, each channel
+     * plane must be the same size.
+     *
+     * For video the linesizes should be multiples of the CPUs alignment
+     * preference, this is 16 or 32 for modern desktop CPUs.
+     * Some code requires such alignment other code can be slower without
+     * correct alignment, for yet other it makes no difference.
+     *
+     * @note The linesize may be larger than the size of usable data -- there
+     * may be extra padding present for performance reasons.
+     */
+    int linesize[AV_NUM_DATA_POINTERS];
+
+    /**
+     * pointers to the data planes/channels.
+     *
+     * For video, this should simply point to data[].
+     *
+     * For planar audio, each channel has a separate data pointer, and
+     * linesize[0] contains the size of each channel buffer.
+     * For packed audio, there is just one data pointer, and linesize[0]
+     * contains the total size of the buffer for all channels.
+     *
+     * Note: Both data and extended_data should always be set in a valid frame,
+     * but for planar audio with more channels that can fit in data,
+     * extended_data must be used in order to access all channels.
+     */
+    uint8_t **extended_data;
+
+    /**
+     * @name Video dimensions
+     * Video frames only. The coded dimensions (in pixels) of the video frame,
+     * i.e. the size of the rectangle that contains some well-defined values.
+     *
+     * @note The part of the frame intended for display/presentation is further
+     * restricted by the @ref cropping "Cropping rectangle".
+     * @{
+     */
+    int width, height;
+    /**
+     * @}
+     */
+
+    /**
+     * number of audio samples (per channel) described by this frame
+     */
+    int nb_samples;
+
+    /**
+     * format of the frame, -1 if unknown or unset
+     * Values correspond to enum AVPixelFormat for video frames,
+     * enum AVSampleFormat for audio)
+     */
+    int format;
+
+    /**
+     * 1 -> keyframe, 0-> not
+     */
+    int key_frame;
+
+    /**
+     * Picture type of the frame.
+     */
+    enum AVPictureType pict_type;
+
+    /**
+     * Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
+     */
+    AVRational sample_aspect_ratio;
+
+    /**
+     * Presentation timestamp in time_base units (time when frame should be shown to user).
+     */
+    int64_t pts;
+
+#if FF_API_PKT_PTS
+    /**
+     * PTS copied from the AVPacket that was decoded to produce this frame.
+     * @deprecated use the pts field instead
+     */
+    attribute_deprecated
+    int64_t pkt_pts;
+#endif
+
+    /**
+     * DTS copied from the AVPacket that triggered returning this frame. (if frame threading isn't used)
+     * This is also the Presentation time of this AVFrame calculated from
+     * only AVPacket.dts values without pts values.
+     */
+    int64_t pkt_dts;
+
+    /**
+     * picture number in bitstream order
+     */
+    int coded_picture_number;
+    /**
+     * picture number in display order
+     */
+    int display_picture_number;
+
+    /**
+     * quality (between 1 (good) and FF_LAMBDA_MAX (bad))
+     */
+    int quality;
+
+    /**
+     * for some private data of the user
+     */
+    void *opaque;
+
+#if FF_API_ERROR_FRAME
+    /**
+     * @deprecated unused
+     */
+    attribute_deprecated
+    uint64_t error[AV_NUM_DATA_POINTERS];
+#endif
+
+    /**
+     * When decoding, this signals how much the picture must be delayed.
+     * extra_delay = repeat_pict / (2*fps)
+     */
+    int repeat_pict;
+
+    /**
+     * The content of the picture is interlaced.
+     */
+    int interlaced_frame;
+
+    /**
+     * If the content is interlaced, is top field displayed first.
+     */
+    int top_field_first;
+
+    /**
+     * Tell user application that palette has changed from previous frame.
+     */
+    int palette_has_changed;
+
+    /**
+     * reordered opaque 64 bits (generally an integer or a double precision float
+     * PTS but can be anything).
+     * The user sets AVCodecContext.reordered_opaque to represent the input at
+     * that time,
+     * the decoder reorders values as needed and sets AVFrame.reordered_opaque
+     * to exactly one of the values provided by the user through AVCodecContext.reordered_opaque
+     */
+    int64_t reordered_opaque;
+
+    /**
+     * Sample rate of the audio data.
+     */
+    int sample_rate;
+
+    /**
+     * Channel layout of the audio data.
+     */
+    uint64_t channel_layout;
+
+    /**
+     * AVBuffer references backing the data for this frame. If all elements of
+     * this array are NULL, then this frame is not reference counted. This array
+     * must be filled contiguously -- if buf[i] is non-NULL then buf[j] must
+     * also be non-NULL for all j < i.
+     *
+     * There may be at most one AVBuffer per data plane, so for video this array
+     * always contains all the references. For planar audio with more than
+     * AV_NUM_DATA_POINTERS channels, there may be more buffers than can fit in
+     * this array. Then the extra AVBufferRef pointers are stored in the
+     * extended_buf array.
+     */
+    AVBufferRef *buf[AV_NUM_DATA_POINTERS];
+
+    /**
+     * For planar audio which requires more than AV_NUM_DATA_POINTERS
+     * AVBufferRef pointers, this array will hold all the references which
+     * cannot fit into AVFrame.buf.
+     *
+     * Note that this is different from AVFrame.extended_data, which always
+     * contains all the pointers. This array only contains the extra pointers,
+     * which cannot fit into AVFrame.buf.
+     *
+     * This array is always allocated using av_malloc() by whoever constructs
+     * the frame. It is freed in av_frame_unref().
+     */
+    AVBufferRef **extended_buf;
+    /**
+     * Number of elements in extended_buf.
+     */
+    int        nb_extended_buf;
+
+    AVFrameSideData **side_data;
+    int            nb_side_data;
+
+/**
+ * @defgroup lavu_frame_flags AV_FRAME_FLAGS
+ * @ingroup lavu_frame
+ * Flags describing additional frame properties.
+ *
+ * @{
+ */
+
+/**
+ * The frame data may be corrupted, e.g. due to decoding errors.
+ */
+#define AV_FRAME_FLAG_CORRUPT       (1 << 0)
+/**
+ * A flag to mark the frames which need to be decoded, but shouldn't be output.
+ */
+#define AV_FRAME_FLAG_DISCARD   (1 << 2)
+/**
+ * @}
+ */
+
+    /**
+     * Frame flags, a combination of @ref lavu_frame_flags
+     */
+    int flags;
+
+    /**
+     * MPEG vs JPEG YUV range.
+     * - encoding: Set by user
+     * - decoding: Set by libavcodec
+     */
+    enum AVColorRange color_range;
+
+    enum AVColorPrimaries color_primaries;
+
+    enum AVColorTransferCharacteristic color_trc;
+
+    /**
+     * YUV colorspace type.
+     * - encoding: Set by user
+     * - decoding: Set by libavcodec
+     */
+    enum AVColorSpace colorspace;
+
+    enum AVChromaLocation chroma_location;
+
+    /**
+     * frame timestamp estimated using various heuristics, in stream time base
+     * - encoding: unused
+     * - decoding: set by libavcodec, read by user.
+     */
+    int64_t best_effort_timestamp;
+
+    /**
+     * reordered pos from the last AVPacket that has been input into the decoder
+     * - encoding: unused
+     * - decoding: Read by user.
+     */
+    int64_t pkt_pos;
+
+    /**
+     * duration of the corresponding packet, expressed in
+     * AVStream->time_base units, 0 if unknown.
+     * - encoding: unused
+     * - decoding: Read by user.
+     */
+    int64_t pkt_duration;
+
+    /**
+     * metadata.
+     * - encoding: Set by user.
+     * - decoding: Set by libavcodec.
+     */
+    AVDictionary *metadata;
+
+    /**
+     * decode error flags of the frame, set to a combination of
+     * FF_DECODE_ERROR_xxx flags if the decoder produced a frame, but there
+     * were errors during the decoding.
+     * - encoding: unused
+     * - decoding: set by libavcodec, read by user.
+     */
+    int decode_error_flags;
+#define FF_DECODE_ERROR_INVALID_BITSTREAM   1
+#define FF_DECODE_ERROR_MISSING_REFERENCE   2
+#define FF_DECODE_ERROR_CONCEALMENT_ACTIVE  4
+#define FF_DECODE_ERROR_DECODE_SLICES       8
+
+    /**
+     * number of audio channels, only used for audio.
+     * - encoding: unused
+     * - decoding: Read by user.
+     */
+    int channels;
+
+    /**
+     * size of the corresponding packet containing the compressed
+     * frame.
+     * It is set to a negative value if unknown.
+     * - encoding: unused
+     * - decoding: set by libavcodec, read by user.
+     */
+    int pkt_size;
+
+#if FF_API_FRAME_QP
+    /**
+     * QP table
+     */
+    attribute_deprecated
+    int8_t *qscale_table;
+    /**
+     * QP store stride
+     */
+    attribute_deprecated
+    int qstride;
+
+    attribute_deprecated
+    int qscale_type;
+
+    attribute_deprecated
+    AVBufferRef *qp_table_buf;
+#endif
+    /**
+     * For hwaccel-format frames, this should be a reference to the
+     * AVHWFramesContext describing the frame.
+     */
+    AVBufferRef *hw_frames_ctx;
+
+    /**
+     * AVBufferRef for free use by the API user. FFmpeg will never check the
+     * contents of the buffer ref. FFmpeg calls av_buffer_unref() on it when
+     * the frame is unreferenced. av_frame_copy_props() calls create a new
+     * reference with av_buffer_ref() for the target frame's opaque_ref field.
+     *
+     * This is unrelated to the opaque field, although it serves a similar
+     * purpose.
+     */
+    AVBufferRef *opaque_ref;
+
+    /**
+     * @anchor cropping
+     * @name Cropping
+     * Video frames only. The number of pixels to discard from the the
+     * top/bottom/left/right border of the frame to obtain the sub-rectangle of
+     * the frame intended for presentation.
+     * @{
+     */
+    size_t crop_top;
+    size_t crop_bottom;
+    size_t crop_left;
+    size_t crop_right;
+    /**
+     * @}
+     */
+
+    /**
+     * AVBufferRef for internal use by a single libav* library.
+     * Must not be used to transfer data between libraries.
+     * Has to be NULL when ownership of the frame leaves the respective library.
+     *
+     * Code outside the FFmpeg libs should never check or change the contents of the buffer ref.
+     *
+     * FFmpeg calls av_buffer_unref() on it when the frame is unreferenced.
+     * av_frame_copy_props() calls create a new reference with av_buffer_ref()
+     * for the target frame's private_ref field.
+     */
+    AVBufferRef *private_ref;
+} AVFrame;
+
+#if FF_API_FRAME_GET_SET
+/**
+ * Accessors for some AVFrame fields. These used to be provided for ABI
+ * compatibility, and do not need to be used anymore.
+ */
+attribute_deprecated
+int64_t av_frame_get_best_effort_timestamp(const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_best_effort_timestamp(AVFrame *frame, int64_t val);
+attribute_deprecated
+int64_t av_frame_get_pkt_duration         (const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_pkt_duration         (AVFrame *frame, int64_t val);
+attribute_deprecated
+int64_t av_frame_get_pkt_pos              (const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_pkt_pos              (AVFrame *frame, int64_t val);
+attribute_deprecated
+int64_t av_frame_get_channel_layout       (const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_channel_layout       (AVFrame *frame, int64_t val);
+attribute_deprecated
+int     av_frame_get_channels             (const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_channels             (AVFrame *frame, int     val);
+attribute_deprecated
+int     av_frame_get_sample_rate          (const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_sample_rate          (AVFrame *frame, int     val);
+attribute_deprecated
+AVDictionary *av_frame_get_metadata       (const AVFrame *frame);
+attribute_deprecated
+void          av_frame_set_metadata       (AVFrame *frame, AVDictionary *val);
+attribute_deprecated
+int     av_frame_get_decode_error_flags   (const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_decode_error_flags   (AVFrame *frame, int     val);
+attribute_deprecated
+int     av_frame_get_pkt_size(const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_pkt_size(AVFrame *frame, int val);
+#if FF_API_FRAME_QP
+attribute_deprecated
+int8_t *av_frame_get_qp_table(AVFrame *f, int *stride, int *type);
+attribute_deprecated
+int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int type);
+#endif
+attribute_deprecated
+enum AVColorSpace av_frame_get_colorspace(const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_colorspace(AVFrame *frame, enum AVColorSpace val);
+attribute_deprecated
+enum AVColorRange av_frame_get_color_range(const AVFrame *frame);
+attribute_deprecated
+void    av_frame_set_color_range(AVFrame *frame, enum AVColorRange val);
+#endif
+
+/**
+ * Get the name of a colorspace.
+ * @return a static string identifying the colorspace; can be NULL.
+ */
+const char *av_get_colorspace_name(enum AVColorSpace val);
+
+/**
+ * Allocate an AVFrame and set its fields to default values.  The resulting
+ * struct must be freed using av_frame_free().
+ *
+ * @return An AVFrame filled with default values or NULL on failure.
+ *
+ * @note this only allocates the AVFrame itself, not the data buffers. Those
+ * must be allocated through other means, e.g. with av_frame_get_buffer() or
+ * manually.
+ */
+AVFrame *av_frame_alloc(void);
+
+/**
+ * Free the frame and any dynamically allocated objects in it,
+ * e.g. extended_data. If the frame is reference counted, it will be
+ * unreferenced first.
+ *
+ * @param frame frame to be freed. The pointer will be set to NULL.
+ */
+void av_frame_free(AVFrame **frame);
+
+/**
+ * Set up a new reference to the data described by the source frame.
+ *
+ * Copy frame properties from src to dst and create a new reference for each
+ * AVBufferRef from src.
+ *
+ * If src is not reference counted, new buffers are allocated and the data is
+ * copied.
+ *
+ * @warning: dst MUST have been either unreferenced with av_frame_unref(dst),
+ *           or newly allocated with av_frame_alloc() before calling this
+ *           function, or undefined behavior will occur.
+ *
+ * @return 0 on success, a negative AVERROR on error
+ */
+int av_frame_ref(AVFrame *dst, const AVFrame *src);
+
+/**
+ * Create a new frame that references the same data as src.
+ *
+ * This is a shortcut for av_frame_alloc()+av_frame_ref().
+ *
+ * @return newly created AVFrame on success, NULL on error.
+ */
+AVFrame *av_frame_clone(const AVFrame *src);
+
+/**
+ * Unreference all the buffers referenced by frame and reset the frame fields.
+ */
+void av_frame_unref(AVFrame *frame);
+
+/**
+ * Move everything contained in src to dst and reset src.
+ *
+ * @warning: dst is not unreferenced, but directly overwritten without reading
+ *           or deallocating its contents. Call av_frame_unref(dst) manually
+ *           before calling this function to ensure that no memory is leaked.
+ */
+void av_frame_move_ref(AVFrame *dst, AVFrame *src);
+
+/**
+ * Allocate new buffer(s) for audio or video data.
+ *
+ * The following fields must be set on frame before calling this function:
+ * - format (pixel format for video, sample format for audio)
+ * - width and height for video
+ * - nb_samples and channel_layout for audio
+ *
+ * This function will fill AVFrame.data and AVFrame.buf arrays and, if
+ * necessary, allocate and fill AVFrame.extended_data and AVFrame.extended_buf.
+ * For planar formats, one buffer will be allocated for each plane.
+ *
+ * @warning: if frame already has been allocated, calling this function will
+ *           leak memory. In addition, undefined behavior can occur in certain
+ *           cases.
+ *
+ * @param frame frame in which to store the new buffers.
+ * @param align Required buffer size alignment. If equal to 0, alignment will be
+ *              chosen automatically for the current CPU. It is highly
+ *              recommended to pass 0 here unless you know what you are doing.
+ *
+ * @return 0 on success, a negative AVERROR on error.
+ */
+int av_frame_get_buffer(AVFrame *frame, int align);
+
+/**
+ * Check if the frame data is writable.
+ *
+ * @return A positive value if the frame data is writable (which is true if and
+ * only if each of the underlying buffers has only one reference, namely the one
+ * stored in this frame). Return 0 otherwise.
+ *
+ * If 1 is returned the answer is valid until av_buffer_ref() is called on any
+ * of the underlying AVBufferRefs (e.g. through av_frame_ref() or directly).
+ *
+ * @see av_frame_make_writable(), av_buffer_is_writable()
+ */
+int av_frame_is_writable(AVFrame *frame);
+
+/**
+ * Ensure that the frame data is writable, avoiding data copy if possible.
+ *
+ * Do nothing if the frame is writable, allocate new buffers and copy the data
+ * if it is not.
+ *
+ * @return 0 on success, a negative AVERROR on error.
+ *
+ * @see av_frame_is_writable(), av_buffer_is_writable(),
+ * av_buffer_make_writable()
+ */
+int av_frame_make_writable(AVFrame *frame);
+
+/**
+ * Copy the frame data from src to dst.
+ *
+ * This function does not allocate anything, dst must be already initialized and
+ * allocated with the same parameters as src.
+ *
+ * This function only copies the frame data (i.e. the contents of the data /
+ * extended data arrays), not any other properties.
+ *
+ * @return >= 0 on success, a negative AVERROR on error.
+ */
+int av_frame_copy(AVFrame *dst, const AVFrame *src);
+
+/**
+ * Copy only "metadata" fields from src to dst.
+ *
+ * Metadata for the purpose of this function are those fields that do not affect
+ * the data layout in the buffers.  E.g. pts, sample rate (for audio) or sample
+ * aspect ratio (for video), but not width/height or channel layout.
+ * Side data is also copied.
+ */
+int av_frame_copy_props(AVFrame *dst, const AVFrame *src);
+
+/**
+ * Get the buffer reference a given data plane is stored in.
+ *
+ * @param plane index of the data plane of interest in frame->extended_data.
+ *
+ * @return the buffer reference that contains the plane or NULL if the input
+ * frame is not valid.
+ */
+AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane);
+
+/**
+ * Add a new side data to a frame.
+ *
+ * @param frame a frame to which the side data should be added
+ * @param type type of the added side data
+ * @param size size of the side data
+ *
+ * @return newly added side data on success, NULL on error
+ */
+AVFrameSideData *av_frame_new_side_data(AVFrame *frame,
+                                        enum AVFrameSideDataType type,
+                                        int size);
+
+/**
+ * Add a new side data to a frame from an existing AVBufferRef
+ *
+ * @param frame a frame to which the side data should be added
+ * @param type  the type of the added side data
+ * @param buf   an AVBufferRef to add as side data. The ownership of
+ *              the reference is transferred to the frame.
+ *
+ * @return newly added side data on success, NULL on error. On failure
+ *         the frame is unchanged and the AVBufferRef remains owned by
+ *         the caller.
+ */
+AVFrameSideData *av_frame_new_side_data_from_buf(AVFrame *frame,
+                                                 enum AVFrameSideDataType type,
+                                                 AVBufferRef *buf);
+
+/**
+ * @return a pointer to the side data of a given type on success, NULL if there
+ * is no side data with such type in this frame.
+ */
+AVFrameSideData *av_frame_get_side_data(const AVFrame *frame,
+                                        enum AVFrameSideDataType type);
+
+/**
+ * If side data of the supplied type exists in the frame, free it and remove it
+ * from the frame.
+ */
+void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type);
+
+
+/**
+ * Flags for frame cropping.
+ */
+enum {
+    /**
+     * Apply the maximum possible cropping, even if it requires setting the
+     * AVFrame.data[] entries to unaligned pointers. Passing unaligned data
+     * to FFmpeg API is generally not allowed, and causes undefined behavior
+     * (such as crashes). You can pass unaligned data only to FFmpeg APIs that
+     * are explicitly documented to accept it. Use this flag only if you
+     * absolutely know what you are doing.
+     */
+    AV_FRAME_CROP_UNALIGNED     = 1 << 0,
+};
+
+/**
+ * Crop the given video AVFrame according to its crop_left/crop_top/crop_right/
+ * crop_bottom fields. If cropping is successful, the function will adjust the
+ * data pointers and the width/height fields, and set the crop fields to 0.
+ *
+ * In all cases, the cropping boundaries will be rounded to the inherent
+ * alignment of the pixel format. In some cases, such as for opaque hwaccel
+ * formats, the left/top cropping is ignored. The crop fields are set to 0 even
+ * if the cropping was rounded or ignored.
+ *
+ * @param frame the frame which should be cropped
+ * @param flags Some combination of AV_FRAME_CROP_* flags, or 0.
+ *
+ * @return >= 0 on success, a negative AVERROR on error. If the cropping fields
+ * were invalid, AVERROR(ERANGE) is returned, and nothing is changed.
+ */
+int av_frame_apply_cropping(AVFrame *frame, int flags);
+
+/**
+ * @return a string identifying the side data type
+ */
+const char *av_frame_side_data_name(enum AVFrameSideDataType type);
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_FRAME_H */
diff --git a/media/ffvpx/libavutil/hwcontext.c b/media/ffvpx/libavutil/hwcontext.c
new file mode 100644
index 0000000000..f1e404ab20
--- /dev/null
+++ b/media/ffvpx/libavutil/hwcontext.c
@@ -0,0 +1,879 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include "buffer.h"
+#include "common.h"
+#include "hwcontext.h"
+#include "hwcontext_internal.h"
+#include "imgutils.h"
+#include "log.h"
+#include "mem.h"
+#include "pixdesc.h"
+#include "pixfmt.h"
+
+static const HWContextType * const hw_table[] = {
+#if CONFIG_CUDA
+    &ff_hwcontext_type_cuda,
+#endif
+#if CONFIG_D3D11VA
+    &ff_hwcontext_type_d3d11va,
+#endif
+#if CONFIG_LIBDRM
+    &ff_hwcontext_type_drm,
+#endif
+#if CONFIG_DXVA2
+    &ff_hwcontext_type_dxva2,
+#endif
+#if CONFIG_OPENCL
+    &ff_hwcontext_type_opencl,
+#endif
+#if CONFIG_QSV
+    &ff_hwcontext_type_qsv,
+#endif
+#if CONFIG_VAAPI
+    &ff_hwcontext_type_vaapi,
+#endif
+#if CONFIG_VDPAU
+    &ff_hwcontext_type_vdpau,
+#endif
+#if CONFIG_VIDEOTOOLBOX
+    &ff_hwcontext_type_videotoolbox,
+#endif
+#if CONFIG_MEDIACODEC
+    &ff_hwcontext_type_mediacodec,
+#endif
+    NULL,
+};
+
+static const char *const hw_type_names[] = {
+    [AV_HWDEVICE_TYPE_CUDA]   = "cuda",
+    [AV_HWDEVICE_TYPE_DRM]    = "drm",
+    [AV_HWDEVICE_TYPE_DXVA2]  = "dxva2",
+    [AV_HWDEVICE_TYPE_D3D11VA] = "d3d11va",
+    [AV_HWDEVICE_TYPE_OPENCL] = "opencl",
+    [AV_HWDEVICE_TYPE_QSV]    = "qsv",
+    [AV_HWDEVICE_TYPE_VAAPI]  = "vaapi",
+    [AV_HWDEVICE_TYPE_VDPAU]  = "vdpau",
+    [AV_HWDEVICE_TYPE_VIDEOTOOLBOX] = "videotoolbox",
+    [AV_HWDEVICE_TYPE_MEDIACODEC] = "mediacodec",
+};
+
+enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name)
+{
+    int type;
+    for (type = 0; type < FF_ARRAY_ELEMS(hw_type_names); type++) {
+        if (hw_type_names[type] && !strcmp(hw_type_names[type], name))
+            return type;
+    }
+    return AV_HWDEVICE_TYPE_NONE;
+}
+
+const char *av_hwdevice_get_type_name(enum AVHWDeviceType type)
+{
+    if (type > AV_HWDEVICE_TYPE_NONE &&
+        type < FF_ARRAY_ELEMS(hw_type_names))
+        return hw_type_names[type];
+    else
+        return NULL;
+}
+
+enum AVHWDeviceType av_hwdevice_iterate_types(enum AVHWDeviceType prev)
+{
+    enum AVHWDeviceType next;
+    int i, set = 0;
+    for (i = 0; hw_table[i]; i++) {
+        if (prev != AV_HWDEVICE_TYPE_NONE && hw_table[i]->type <= prev)
+            continue;
+        if (!set || hw_table[i]->type < next) {
+            next = hw_table[i]->type;
+            set = 1;
+        }
+    }
+    return set ? next : AV_HWDEVICE_TYPE_NONE;
+}
+
+static const AVClass hwdevice_ctx_class = {
+    .class_name = "AVHWDeviceContext",
+    .item_name  = av_default_item_name,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+static void hwdevice_ctx_free(void *opaque, uint8_t *data)
+{
+    AVHWDeviceContext *ctx = (AVHWDeviceContext*)data;
+
+    /* uninit might still want access the hw context and the user
+     * free() callback might destroy it, so uninit has to be called first */
+    if (ctx->internal->hw_type->device_uninit)
+        ctx->internal->hw_type->device_uninit(ctx);
+
+    if (ctx->free)
+        ctx->free(ctx);
+
+    av_buffer_unref(&ctx->internal->source_device);
+
+    av_freep(&ctx->hwctx);
+    av_freep(&ctx->internal->priv);
+    av_freep(&ctx->internal);
+    av_freep(&ctx);
+}
+
+AVBufferRef *av_hwdevice_ctx_alloc(enum AVHWDeviceType type)
+{
+    AVHWDeviceContext *ctx;
+    AVBufferRef *buf;
+    const HWContextType *hw_type = NULL;
+    int i;
+
+    for (i = 0; hw_table[i]; i++) {
+        if (hw_table[i]->type == type) {
+            hw_type = hw_table[i];
+            break;
+        }
+    }
+    if (!hw_type)
+        return NULL;
+
+    ctx = av_mallocz(sizeof(*ctx));
+    if (!ctx)
+        return NULL;
+
+    ctx->internal = av_mallocz(sizeof(*ctx->internal));
+    if (!ctx->internal)
+        goto fail;
+
+    if (hw_type->device_priv_size) {
+        ctx->internal->priv = av_mallocz(hw_type->device_priv_size);
+        if (!ctx->internal->priv)
+            goto fail;
+    }
+
+    if (hw_type->device_hwctx_size) {
+        ctx->hwctx = av_mallocz(hw_type->device_hwctx_size);
+        if (!ctx->hwctx)
+            goto fail;
+    }
+
+    buf = av_buffer_create((uint8_t*)ctx, sizeof(*ctx),
+                           hwdevice_ctx_free, NULL,
+                           AV_BUFFER_FLAG_READONLY);
+    if (!buf)
+        goto fail;
+
+    ctx->type     = type;
+    ctx->av_class = &hwdevice_ctx_class;
+
+    ctx->internal->hw_type = hw_type;
+
+    return buf;
+
+fail:
+    if (ctx->internal)
+        av_freep(&ctx->internal->priv);
+    av_freep(&ctx->internal);
+    av_freep(&ctx->hwctx);
+    av_freep(&ctx);
+    return NULL;
+}
+
+int av_hwdevice_ctx_init(AVBufferRef *ref)
+{
+    AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data;
+    int ret;
+
+    if (ctx->internal->hw_type->device_init) {
+        ret = ctx->internal->hw_type->device_init(ctx);
+        if (ret < 0)
+            goto fail;
+    }
+
+    return 0;
+fail:
+    if (ctx->internal->hw_type->device_uninit)
+        ctx->internal->hw_type->device_uninit(ctx);
+    return ret;
+}
+
+static const AVClass hwframe_ctx_class = {
+    .class_name = "AVHWFramesContext",
+    .item_name  = av_default_item_name,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+static void hwframe_ctx_free(void *opaque, uint8_t *data)
+{
+    AVHWFramesContext *ctx = (AVHWFramesContext*)data;
+
+    if (ctx->internal->pool_internal)
+        av_buffer_pool_uninit(&ctx->internal->pool_internal);
+
+    if (ctx->internal->hw_type->frames_uninit)
+        ctx->internal->hw_type->frames_uninit(ctx);
+
+    if (ctx->free)
+        ctx->free(ctx);
+
+    av_buffer_unref(&ctx->internal->source_frames);
+
+    av_buffer_unref(&ctx->device_ref);
+
+    av_freep(&ctx->hwctx);
+    av_freep(&ctx->internal->priv);
+    av_freep(&ctx->internal);
+    av_freep(&ctx);
+}
+
+AVBufferRef *av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
+{
+    AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)device_ref_in->data;
+    const HWContextType  *hw_type = device_ctx->internal->hw_type;
+    AVHWFramesContext *ctx;
+    AVBufferRef *buf, *device_ref = NULL;
+
+    ctx = av_mallocz(sizeof(*ctx));
+    if (!ctx)
+        return NULL;
+
+    ctx->internal = av_mallocz(sizeof(*ctx->internal));
+    if (!ctx->internal)
+        goto fail;
+
+    if (hw_type->frames_priv_size) {
+        ctx->internal->priv = av_mallocz(hw_type->frames_priv_size);
+        if (!ctx->internal->priv)
+            goto fail;
+    }
+
+    if (hw_type->frames_hwctx_size) {
+        ctx->hwctx = av_mallocz(hw_type->frames_hwctx_size);
+        if (!ctx->hwctx)
+            goto fail;
+    }
+
+    device_ref = av_buffer_ref(device_ref_in);
+    if (!device_ref)
+        goto fail;
+
+    buf = av_buffer_create((uint8_t*)ctx, sizeof(*ctx),
+                           hwframe_ctx_free, NULL,
+                           AV_BUFFER_FLAG_READONLY);
+    if (!buf)
+        goto fail;
+
+    ctx->av_class   = &hwframe_ctx_class;
+    ctx->device_ref = device_ref;
+    ctx->device_ctx = device_ctx;
+    ctx->format     = AV_PIX_FMT_NONE;
+    ctx->sw_format  = AV_PIX_FMT_NONE;
+
+    ctx->internal->hw_type = hw_type;
+
+    return buf;
+
+fail:
+    if (device_ref)
+        av_buffer_unref(&device_ref);
+    if (ctx->internal)
+        av_freep(&ctx->internal->priv);
+    av_freep(&ctx->internal);
+    av_freep(&ctx->hwctx);
+    av_freep(&ctx);
+    return NULL;
+}
+
+static int hwframe_pool_prealloc(AVBufferRef *ref)
+{
+    AVHWFramesContext *ctx = (AVHWFramesContext*)ref->data;
+    AVFrame **frames;
+    int i, ret = 0;
+
+    frames = av_mallocz_array(ctx->initial_pool_size, sizeof(*frames));
+    if (!frames)
+        return AVERROR(ENOMEM);
+
+    for (i = 0; i < ctx->initial_pool_size; i++) {
+        frames[i] = av_frame_alloc();
+        if (!frames[i])
+            goto fail;
+
+        ret = av_hwframe_get_buffer(ref, frames[i], 0);
+        if (ret < 0)
+            goto fail;
+    }
+
+fail:
+    for (i = 0; i < ctx->initial_pool_size; i++)
+        av_frame_free(&frames[i]);
+    av_freep(&frames);
+
+    return ret;
+}
+
+int av_hwframe_ctx_init(AVBufferRef *ref)
+{
+    AVHWFramesContext *ctx = (AVHWFramesContext*)ref->data;
+    const enum AVPixelFormat *pix_fmt;
+    int ret;
+
+    if (ctx->internal->source_frames) {
+        /* A derived frame context is already initialised. */
+        return 0;
+    }
+
+    /* validate the pixel format */
+    for (pix_fmt = ctx->internal->hw_type->pix_fmts; *pix_fmt != AV_PIX_FMT_NONE; pix_fmt++) {
+        if (*pix_fmt == ctx->format)
+            break;
+    }
+    if (*pix_fmt == AV_PIX_FMT_NONE) {
+        av_log(ctx, AV_LOG_ERROR,
+               "The hardware pixel format '%s' is not supported by the device type '%s'\n",
+               av_get_pix_fmt_name(ctx->format), ctx->internal->hw_type->name);
+        return AVERROR(ENOSYS);
+    }
+
+    /* validate the dimensions */
+    ret = av_image_check_size(ctx->width, ctx->height, 0, ctx);
+    if (ret < 0)
+        return ret;
+
+    /* format-specific init */
+    if (ctx->internal->hw_type->frames_init) {
+        ret = ctx->internal->hw_type->frames_init(ctx);
+        if (ret < 0)
+            goto fail;
+    }
+
+    if (ctx->internal->pool_internal && !ctx->pool)
+        ctx->pool = ctx->internal->pool_internal;
+
+    /* preallocate the frames in the pool, if requested */
+    if (ctx->initial_pool_size > 0) {
+        ret = hwframe_pool_prealloc(ref);
+        if (ret < 0)
+            goto fail;
+    }
+
+    return 0;
+fail:
+    if (ctx->internal->hw_type->frames_uninit)
+        ctx->internal->hw_type->frames_uninit(ctx);
+    return ret;
+}
+
+int av_hwframe_transfer_get_formats(AVBufferRef *hwframe_ref,
+                                    enum AVHWFrameTransferDirection dir,
+                                    enum AVPixelFormat **formats, int flags)
+{
+    AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data;
+
+    if (!ctx->internal->hw_type->transfer_get_formats)
+        return AVERROR(ENOSYS);
+
+    return ctx->internal->hw_type->transfer_get_formats(ctx, dir, formats);
+}
+
+static int transfer_data_alloc(AVFrame *dst, const AVFrame *src, int flags)
+{
+    AVHWFramesContext *ctx = (AVHWFramesContext*)src->hw_frames_ctx->data;
+    AVFrame *frame_tmp;
+    int ret = 0;
+
+    frame_tmp = av_frame_alloc();
+    if (!frame_tmp)
+        return AVERROR(ENOMEM);
+
+    /* if the format is set, use that
+     * otherwise pick the first supported one */
+    if (dst->format >= 0) {
+        frame_tmp->format = dst->format;
+    } else {
+        enum AVPixelFormat *formats;
+
+        ret = av_hwframe_transfer_get_formats(src->hw_frames_ctx,
+                                              AV_HWFRAME_TRANSFER_DIRECTION_FROM,
+                                              &formats, 0);
+        if (ret < 0)
+            goto fail;
+        frame_tmp->format = formats[0];
+        av_freep(&formats);
+    }
+    frame_tmp->width  = ctx->width;
+    frame_tmp->height = ctx->height;
+
+    ret = av_frame_get_buffer(frame_tmp, 32);
+    if (ret < 0)
+        goto fail;
+
+    ret = av_hwframe_transfer_data(frame_tmp, src, flags);
+    if (ret < 0)
+        goto fail;
+
+    frame_tmp->width  = src->width;
+    frame_tmp->height = src->height;
+
+    av_frame_move_ref(dst, frame_tmp);
+
+fail:
+    av_frame_free(&frame_tmp);
+    return ret;
+}
+
+int av_hwframe_transfer_data(AVFrame *dst, const AVFrame *src, int flags)
+{
+    AVHWFramesContext *ctx;
+    int ret;
+
+    if (!dst->buf[0])
+        return transfer_data_alloc(dst, src, flags);
+
+    if (src->hw_frames_ctx) {
+        ctx = (AVHWFramesContext*)src->hw_frames_ctx->data;
+
+        ret = ctx->internal->hw_type->transfer_data_from(ctx, dst, src);
+        if (ret < 0)
+            return ret;
+    } else if (dst->hw_frames_ctx) {
+        ctx = (AVHWFramesContext*)dst->hw_frames_ctx->data;
+
+        ret = ctx->internal->hw_type->transfer_data_to(ctx, dst, src);
+        if (ret < 0)
+            return ret;
+    } else
+        return AVERROR(ENOSYS);
+
+    return 0;
+}
+
+int av_hwframe_get_buffer(AVBufferRef *hwframe_ref, AVFrame *frame, int flags)
+{
+    AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data;
+    int ret;
+
+    if (ctx->internal->source_frames) {
+        // This is a derived frame context, so we allocate in the source
+        // and map the frame immediately.
+        AVFrame *src_frame;
+
+        frame->format = ctx->format;
+        frame->hw_frames_ctx = av_buffer_ref(hwframe_ref);
+        if (!frame->hw_frames_ctx)
+            return AVERROR(ENOMEM);
+
+        src_frame = av_frame_alloc();
+        if (!src_frame)
+            return AVERROR(ENOMEM);
+
+        ret = av_hwframe_get_buffer(ctx->internal->source_frames,
+                                    src_frame, 0);
+        if (ret < 0) {
+            av_frame_free(&src_frame);
+            return ret;
+        }
+
+        ret = av_hwframe_map(frame, src_frame,
+                             ctx->internal->source_allocation_map_flags);
+        if (ret) {
+            av_log(ctx, AV_LOG_ERROR, "Failed to map frame into derived "
+                   "frame context: %d.\n", ret);
+            av_frame_free(&src_frame);
+            return ret;
+        }
+
+        // Free the source frame immediately - the mapped frame still
+        // contains a reference to it.
+        av_frame_free(&src_frame);
+
+        return 0;
+    }
+
+    if (!ctx->internal->hw_type->frames_get_buffer)
+        return AVERROR(ENOSYS);
+
+    if (!ctx->pool)
+        return AVERROR(EINVAL);
+
+    frame->hw_frames_ctx = av_buffer_ref(hwframe_ref);
+    if (!frame->hw_frames_ctx)
+        return AVERROR(ENOMEM);
+
+    ret = ctx->internal->hw_type->frames_get_buffer(ctx, frame);
+    if (ret < 0) {
+        av_buffer_unref(&frame->hw_frames_ctx);
+        return ret;
+    }
+
+    return 0;
+}
+
+void *av_hwdevice_hwconfig_alloc(AVBufferRef *ref)
+{
+    AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data;
+    const HWContextType  *hw_type = ctx->internal->hw_type;
+
+    if (hw_type->device_hwconfig_size == 0)
+        return NULL;
+
+    return av_mallocz(hw_type->device_hwconfig_size);
+}
+
+AVHWFramesConstraints *av_hwdevice_get_hwframe_constraints(AVBufferRef *ref,
+                                                           const void *hwconfig)
+{
+    AVHWDeviceContext *ctx = (AVHWDeviceContext*)ref->data;
+    const HWContextType  *hw_type = ctx->internal->hw_type;
+    AVHWFramesConstraints *constraints;
+
+    if (!hw_type->frames_get_constraints)
+        return NULL;
+
+    constraints = av_mallocz(sizeof(*constraints));
+    if (!constraints)
+        return NULL;
+
+    constraints->min_width = constraints->min_height = 0;
+    constraints->max_width = constraints->max_height = INT_MAX;
+
+    if (hw_type->frames_get_constraints(ctx, hwconfig, constraints) >= 0) {
+        return constraints;
+    } else {
+        av_hwframe_constraints_free(&constraints);
+        return NULL;
+    }
+}
+
+void av_hwframe_constraints_free(AVHWFramesConstraints **constraints)
+{
+    if (*constraints) {
+        av_freep(&(*constraints)->valid_hw_formats);
+        av_freep(&(*constraints)->valid_sw_formats);
+    }
+    av_freep(constraints);
+}
+
+int av_hwdevice_ctx_create(AVBufferRef **pdevice_ref, enum AVHWDeviceType type,
+                           const char *device, AVDictionary *opts, int flags)
+{
+    AVBufferRef *device_ref = NULL;
+    AVHWDeviceContext *device_ctx;
+    int ret = 0;
+
+    device_ref = av_hwdevice_ctx_alloc(type);
+    if (!device_ref) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+    device_ctx = (AVHWDeviceContext*)device_ref->data;
+
+    if (!device_ctx->internal->hw_type->device_create) {
+        ret = AVERROR(ENOSYS);
+        goto fail;
+    }
+
+    ret = device_ctx->internal->hw_type->device_create(device_ctx, device,
+                                                       opts, flags);
+    if (ret < 0)
+        goto fail;
+
+    ret = av_hwdevice_ctx_init(device_ref);
+    if (ret < 0)
+        goto fail;
+
+    *pdevice_ref = device_ref;
+    return 0;
+fail:
+    av_buffer_unref(&device_ref);
+    *pdevice_ref = NULL;
+    return ret;
+}
+
+int av_hwdevice_ctx_create_derived(AVBufferRef **dst_ref_ptr,
+                                   enum AVHWDeviceType type,
+                                   AVBufferRef *src_ref, int flags)
+{
+    AVBufferRef *dst_ref = NULL, *tmp_ref;
+    AVHWDeviceContext *dst_ctx, *tmp_ctx;
+    int ret = 0;
+
+    tmp_ref = src_ref;
+    while (tmp_ref) {
+        tmp_ctx = (AVHWDeviceContext*)tmp_ref->data;
+        if (tmp_ctx->type == type) {
+            dst_ref = av_buffer_ref(tmp_ref);
+            if (!dst_ref) {
+                ret = AVERROR(ENOMEM);
+                goto fail;
+            }
+            goto done;
+        }
+        tmp_ref = tmp_ctx->internal->source_device;
+    }
+
+    dst_ref = av_hwdevice_ctx_alloc(type);
+    if (!dst_ref) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+    dst_ctx = (AVHWDeviceContext*)dst_ref->data;
+
+    tmp_ref = src_ref;
+    while (tmp_ref) {
+        tmp_ctx = (AVHWDeviceContext*)tmp_ref->data;
+        if (dst_ctx->internal->hw_type->device_derive) {
+            ret = dst_ctx->internal->hw_type->device_derive(dst_ctx,
+                                                            tmp_ctx,
+                                                            flags);
+            if (ret == 0) {
+                dst_ctx->internal->source_device = av_buffer_ref(src_ref);
+                if (!dst_ctx->internal->source_device) {
+                    ret = AVERROR(ENOMEM);
+                    goto fail;
+                }
+                ret = av_hwdevice_ctx_init(dst_ref);
+                if (ret < 0)
+                    goto fail;
+                goto done;
+            }
+            if (ret != AVERROR(ENOSYS))
+                goto fail;
+        }
+        tmp_ref = tmp_ctx->internal->source_device;
+    }
+
+    ret = AVERROR(ENOSYS);
+    goto fail;
+
+done:
+    *dst_ref_ptr = dst_ref;
+    return 0;
+
+fail:
+    av_buffer_unref(&dst_ref);
+    *dst_ref_ptr = NULL;
+    return ret;
+}
+
+static void ff_hwframe_unmap(void *opaque, uint8_t *data)
+{
+    HWMapDescriptor *hwmap = (HWMapDescriptor*)data;
+    AVHWFramesContext *ctx = opaque;
+
+    if (hwmap->unmap)
+        hwmap->unmap(ctx, hwmap);
+
+    av_frame_free(&hwmap->source);
+
+    av_buffer_unref(&hwmap->hw_frames_ctx);
+
+    av_free(hwmap);
+}
+
+int ff_hwframe_map_create(AVBufferRef *hwframe_ref,
+                          AVFrame *dst, const AVFrame *src,
+                          void (*unmap)(AVHWFramesContext *ctx,
+                                        HWMapDescriptor *hwmap),
+                          void *priv)
+{
+    AVHWFramesContext *ctx = (AVHWFramesContext*)hwframe_ref->data;
+    HWMapDescriptor *hwmap;
+    int ret;
+
+    hwmap = av_mallocz(sizeof(*hwmap));
+    if (!hwmap) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    hwmap->source = av_frame_alloc();
+    if (!hwmap->source) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+    ret = av_frame_ref(hwmap->source, src);
+    if (ret < 0)
+        goto fail;
+
+    hwmap->hw_frames_ctx = av_buffer_ref(hwframe_ref);
+    if (!hwmap->hw_frames_ctx) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    hwmap->unmap = unmap;
+    hwmap->priv  = priv;
+
+    dst->buf[0] = av_buffer_create((uint8_t*)hwmap, sizeof(*hwmap),
+                                   &ff_hwframe_unmap, ctx, 0);
+    if (!dst->buf[0]) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    return 0;
+
+fail:
+    if (hwmap) {
+        av_buffer_unref(&hwmap->hw_frames_ctx);
+        av_frame_free(&hwmap->source);
+    }
+    av_free(hwmap);
+    return ret;
+}
+
+int av_hwframe_map(AVFrame *dst, const AVFrame *src, int flags)
+{
+    AVHWFramesContext *src_frames, *dst_frames;
+    HWMapDescriptor *hwmap;
+    int ret;
+
+    if (src->hw_frames_ctx && dst->hw_frames_ctx) {
+        src_frames = (AVHWFramesContext*)src->hw_frames_ctx->data;
+        dst_frames = (AVHWFramesContext*)dst->hw_frames_ctx->data;
+
+        if ((src_frames == dst_frames &&
+             src->format == dst_frames->sw_format &&
+             dst->format == dst_frames->format) ||
+            (src_frames->internal->source_frames &&
+             src_frames->internal->source_frames->data ==
+             (uint8_t*)dst_frames)) {
+            // This is an unmap operation.  We don't need to directly
+            // do anything here other than fill in the original frame,
+            // because the real unmap will be invoked when the last
+            // reference to the mapped frame disappears.
+            if (!src->buf[0]) {
+                av_log(src_frames, AV_LOG_ERROR, "Invalid mapping "
+                       "found when attempting unmap.\n");
+                return AVERROR(EINVAL);
+            }
+            hwmap = (HWMapDescriptor*)src->buf[0]->data;
+            av_frame_unref(dst);
+            return av_frame_ref(dst, hwmap->source);
+        }
+    }
+
+    if (src->hw_frames_ctx) {
+        src_frames = (AVHWFramesContext*)src->hw_frames_ctx->data;
+
+        if (src_frames->format == src->format &&
+            src_frames->internal->hw_type->map_from) {
+            ret = src_frames->internal->hw_type->map_from(src_frames,
+                                                          dst, src, flags);
+            if (ret != AVERROR(ENOSYS))
+                return ret;
+        }
+    }
+
+    if (dst->hw_frames_ctx) {
+        dst_frames = (AVHWFramesContext*)dst->hw_frames_ctx->data;
+
+        if (dst_frames->format == dst->format &&
+            dst_frames->internal->hw_type->map_to) {
+            ret = dst_frames->internal->hw_type->map_to(dst_frames,
+                                                        dst, src, flags);
+            if (ret != AVERROR(ENOSYS))
+                return ret;
+        }
+    }
+
+    return AVERROR(ENOSYS);
+}
+
+int av_hwframe_ctx_create_derived(AVBufferRef **derived_frame_ctx,
+                                  enum AVPixelFormat format,
+                                  AVBufferRef *derived_device_ctx,
+                                  AVBufferRef *source_frame_ctx,
+                                  int flags)
+{
+    AVBufferRef   *dst_ref = NULL;
+    AVHWFramesContext *dst = NULL;
+    AVHWFramesContext *src = (AVHWFramesContext*)source_frame_ctx->data;
+    int ret;
+
+    if (src->internal->source_frames) {
+        AVHWFramesContext *src_src =
+            (AVHWFramesContext*)src->internal->source_frames->data;
+        AVHWDeviceContext *dst_dev =
+            (AVHWDeviceContext*)derived_device_ctx->data;
+
+        if (src_src->device_ctx == dst_dev) {
+            // This is actually an unmapping, so we just return a
+            // reference to the source frame context.
+            *derived_frame_ctx =
+                av_buffer_ref(src->internal->source_frames);
+            if (!*derived_frame_ctx) {
+                ret = AVERROR(ENOMEM);
+                goto fail;
+            }
+            return 0;
+        }
+    }
+
+    dst_ref = av_hwframe_ctx_alloc(derived_device_ctx);
+    if (!dst_ref) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    dst = (AVHWFramesContext*)dst_ref->data;
+
+    dst->format    = format;
+    dst->sw_format = src->sw_format;
+    dst->width     = src->width;
+    dst->height    = src->height;
+
+    dst->internal->source_frames = av_buffer_ref(source_frame_ctx);
+    if (!dst->internal->source_frames) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    dst->internal->source_allocation_map_flags =
+        flags & (AV_HWFRAME_MAP_READ      |
+                 AV_HWFRAME_MAP_WRITE     |
+                 AV_HWFRAME_MAP_OVERWRITE |
+                 AV_HWFRAME_MAP_DIRECT);
+
+    ret = AVERROR(ENOSYS);
+    if (src->internal->hw_type->frames_derive_from)
+        ret = src->internal->hw_type->frames_derive_from(dst, src, flags);
+    if (ret == AVERROR(ENOSYS) &&
+        dst->internal->hw_type->frames_derive_to)
+        ret = dst->internal->hw_type->frames_derive_to(dst, src, flags);
+    if (ret == AVERROR(ENOSYS))
+        ret = 0;
+    if (ret)
+        goto fail;
+
+    *derived_frame_ctx = dst_ref;
+    return 0;
+
+fail:
+    if (dst)
+        av_buffer_unref(&dst->internal->source_frames);
+    av_buffer_unref(&dst_ref);
+    return ret;
+}
+
+int ff_hwframe_map_replace(AVFrame *dst, const AVFrame *src)
+{
+    HWMapDescriptor *hwmap = (HWMapDescriptor*)dst->buf[0]->data;
+    av_frame_unref(hwmap->source);
+    return av_frame_ref(hwmap->source, src);
+}
diff --git a/media/ffvpx/libavutil/hwcontext.h b/media/ffvpx/libavutil/hwcontext.h
new file mode 100644
index 0000000000..f5a4b62387
--- /dev/null
+++ b/media/ffvpx/libavutil/hwcontext.h
@@ -0,0 +1,584 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_HWCONTEXT_H
+#define AVUTIL_HWCONTEXT_H
+
+#include "buffer.h"
+#include "frame.h"
+#include "log.h"
+#include "pixfmt.h"
+
+enum AVHWDeviceType {
+    AV_HWDEVICE_TYPE_NONE,
+    AV_HWDEVICE_TYPE_VDPAU,
+    AV_HWDEVICE_TYPE_CUDA,
+    AV_HWDEVICE_TYPE_VAAPI,
+    AV_HWDEVICE_TYPE_DXVA2,
+    AV_HWDEVICE_TYPE_QSV,
+    AV_HWDEVICE_TYPE_VIDEOTOOLBOX,
+    AV_HWDEVICE_TYPE_D3D11VA,
+    AV_HWDEVICE_TYPE_DRM,
+    AV_HWDEVICE_TYPE_OPENCL,
+    AV_HWDEVICE_TYPE_MEDIACODEC,
+};
+
+typedef struct AVHWDeviceInternal AVHWDeviceInternal;
+
+/**
+ * This struct aggregates all the (hardware/vendor-specific) "high-level" state,
+ * i.e. state that is not tied to a concrete processing configuration.
+ * E.g., in an API that supports hardware-accelerated encoding and decoding,
+ * this struct will (if possible) wrap the state that is common to both encoding
+ * and decoding and from which specific instances of encoders or decoders can be
+ * derived.
+ *
+ * This struct is reference-counted with the AVBuffer mechanism. The
+ * av_hwdevice_ctx_alloc() constructor yields a reference, whose data field
+ * points to the actual AVHWDeviceContext. Further objects derived from
+ * AVHWDeviceContext (such as AVHWFramesContext, describing a frame pool with
+ * specific properties) will hold an internal reference to it. After all the
+ * references are released, the AVHWDeviceContext itself will be freed,
+ * optionally invoking a user-specified callback for uninitializing the hardware
+ * state.
+ */
+typedef struct AVHWDeviceContext {
+    /**
+     * A class for logging. Set by av_hwdevice_ctx_alloc().
+     */
+    const AVClass *av_class;
+
+    /**
+     * Private data used internally by libavutil. Must not be accessed in any
+     * way by the caller.
+     */
+    AVHWDeviceInternal *internal;
+
+    /**
+     * This field identifies the underlying API used for hardware access.
+     *
+     * This field is set when this struct is allocated and never changed
+     * afterwards.
+     */
+    enum AVHWDeviceType type;
+
+    /**
+     * The format-specific data, allocated and freed by libavutil along with
+     * this context.
+     *
+     * Should be cast by the user to the format-specific context defined in the
+     * corresponding header (hwcontext_*.h) and filled as described in the
+     * documentation before calling av_hwdevice_ctx_init().
+     *
+     * After calling av_hwdevice_ctx_init() this struct should not be modified
+     * by the caller.
+     */
+    void *hwctx;
+
+    /**
+     * This field may be set by the caller before calling av_hwdevice_ctx_init().
+     *
+     * If non-NULL, this callback will be called when the last reference to
+     * this context is unreferenced, immediately before it is freed.
+     *
+     * @note when other objects (e.g an AVHWFramesContext) are derived from this
+     *       struct, this callback will be invoked after all such child objects
+     *       are fully uninitialized and their respective destructors invoked.
+     */
+    void (*free)(struct AVHWDeviceContext *ctx);
+
+    /**
+     * Arbitrary user data, to be used e.g. by the free() callback.
+     */
+    void *user_opaque;
+} AVHWDeviceContext;
+
+typedef struct AVHWFramesInternal AVHWFramesInternal;
+
+/**
+ * This struct describes a set or pool of "hardware" frames (i.e. those with
+ * data not located in normal system memory). All the frames in the pool are
+ * assumed to be allocated in the same way and interchangeable.
+ *
+ * This struct is reference-counted with the AVBuffer mechanism and tied to a
+ * given AVHWDeviceContext instance. The av_hwframe_ctx_alloc() constructor
+ * yields a reference, whose data field points to the actual AVHWFramesContext
+ * struct.
+ */
+typedef struct AVHWFramesContext {
+    /**
+     * A class for logging.
+     */
+    const AVClass *av_class;
+
+    /**
+     * Private data used internally by libavutil. Must not be accessed in any
+     * way by the caller.
+     */
+    AVHWFramesInternal *internal;
+
+    /**
+     * A reference to the parent AVHWDeviceContext. This reference is owned and
+     * managed by the enclosing AVHWFramesContext, but the caller may derive
+     * additional references from it.
+     */
+    AVBufferRef *device_ref;
+
+    /**
+     * The parent AVHWDeviceContext. This is simply a pointer to
+     * device_ref->data provided for convenience.
+     *
+     * Set by libavutil in av_hwframe_ctx_init().
+     */
+    AVHWDeviceContext *device_ctx;
+
+    /**
+     * The format-specific data, allocated and freed automatically along with
+     * this context.
+     *
+     * Should be cast by the user to the format-specific context defined in the
+     * corresponding header (hwframe_*.h) and filled as described in the
+     * documentation before calling av_hwframe_ctx_init().
+     *
+     * After any frames using this context are created, the contents of this
+     * struct should not be modified by the caller.
+     */
+    void *hwctx;
+
+    /**
+     * This field may be set by the caller before calling av_hwframe_ctx_init().
+     *
+     * If non-NULL, this callback will be called when the last reference to
+     * this context is unreferenced, immediately before it is freed.
+     */
+    void (*free)(struct AVHWFramesContext *ctx);
+
+    /**
+     * Arbitrary user data, to be used e.g. by the free() callback.
+     */
+    void *user_opaque;
+
+    /**
+     * A pool from which the frames are allocated by av_hwframe_get_buffer().
+     * This field may be set by the caller before calling av_hwframe_ctx_init().
+     * The buffers returned by calling av_buffer_pool_get() on this pool must
+     * have the properties described in the documentation in the corresponding hw
+     * type's header (hwcontext_*.h). The pool will be freed strictly before
+     * this struct's free() callback is invoked.
+     *
+     * This field may be NULL, then libavutil will attempt to allocate a pool
+     * internally. Note that certain device types enforce pools allocated at
+     * fixed size (frame count), which cannot be extended dynamically. In such a
+     * case, initial_pool_size must be set appropriately.
+     */
+    AVBufferPool *pool;
+
+    /**
+     * Initial size of the frame pool. If a device type does not support
+     * dynamically resizing the pool, then this is also the maximum pool size.
+     *
+     * May be set by the caller before calling av_hwframe_ctx_init(). Must be
+     * set if pool is NULL and the device type does not support dynamic pools.
+     */
+    int initial_pool_size;
+
+    /**
+     * The pixel format identifying the underlying HW surface type.
+     *
+     * Must be a hwaccel format, i.e. the corresponding descriptor must have the
+     * AV_PIX_FMT_FLAG_HWACCEL flag set.
+     *
+     * Must be set by the user before calling av_hwframe_ctx_init().
+     */
+    enum AVPixelFormat format;
+
+    /**
+     * The pixel format identifying the actual data layout of the hardware
+     * frames.
+     *
+     * Must be set by the caller before calling av_hwframe_ctx_init().
+     *
+     * @note when the underlying API does not provide the exact data layout, but
+     * only the colorspace/bit depth, this field should be set to the fully
+     * planar version of that format (e.g. for 8-bit 420 YUV it should be
+     * AV_PIX_FMT_YUV420P, not AV_PIX_FMT_NV12 or anything else).
+     */
+    enum AVPixelFormat sw_format;
+
+    /**
+     * The allocated dimensions of the frames in this pool.
+     *
+     * Must be set by the user before calling av_hwframe_ctx_init().
+     */
+    int width, height;
+} AVHWFramesContext;
+
+/**
+ * Look up an AVHWDeviceType by name.
+ *
+ * @param name String name of the device type (case-insensitive).
+ * @return The type from enum AVHWDeviceType, or AV_HWDEVICE_TYPE_NONE if
+ *         not found.
+ */
+enum AVHWDeviceType av_hwdevice_find_type_by_name(const char *name);
+
+/** Get the string name of an AVHWDeviceType.
+ *
+ * @param type Type from enum AVHWDeviceType.
+ * @return Pointer to a static string containing the name, or NULL if the type
+ *         is not valid.
+ */
+const char *av_hwdevice_get_type_name(enum AVHWDeviceType type);
+
+/**
+ * Iterate over supported device types.
+ *
+ * @param type AV_HWDEVICE_TYPE_NONE initially, then the previous type
+ *             returned by this function in subsequent iterations.
+ * @return The next usable device type from enum AVHWDeviceType, or
+ *         AV_HWDEVICE_TYPE_NONE if there are no more.
+ */
+enum AVHWDeviceType av_hwdevice_iterate_types(enum AVHWDeviceType prev);
+
+/**
+ * Allocate an AVHWDeviceContext for a given hardware type.
+ *
+ * @param type the type of the hardware device to allocate.
+ * @return a reference to the newly created AVHWDeviceContext on success or NULL
+ *         on failure.
+ */
+AVBufferRef *av_hwdevice_ctx_alloc(enum AVHWDeviceType type);
+
+/**
+ * Finalize the device context before use. This function must be called after
+ * the context is filled with all the required information and before it is
+ * used in any way.
+ *
+ * @param ref a reference to the AVHWDeviceContext
+ * @return 0 on success, a negative AVERROR code on failure
+ */
+int av_hwdevice_ctx_init(AVBufferRef *ref);
+
+/**
+ * Open a device of the specified type and create an AVHWDeviceContext for it.
+ *
+ * This is a convenience function intended to cover the simple cases. Callers
+ * who need to fine-tune device creation/management should open the device
+ * manually and then wrap it in an AVHWDeviceContext using
+ * av_hwdevice_ctx_alloc()/av_hwdevice_ctx_init().
+ *
+ * The returned context is already initialized and ready for use, the caller
+ * should not call av_hwdevice_ctx_init() on it. The user_opaque/free fields of
+ * the created AVHWDeviceContext are set by this function and should not be
+ * touched by the caller.
+ *
+ * @param device_ctx On success, a reference to the newly-created device context
+ *                   will be written here. The reference is owned by the caller
+ *                   and must be released with av_buffer_unref() when no longer
+ *                   needed. On failure, NULL will be written to this pointer.
+ * @param type The type of the device to create.
+ * @param device A type-specific string identifying the device to open.
+ * @param opts A dictionary of additional (type-specific) options to use in
+ *             opening the device. The dictionary remains owned by the caller.
+ * @param flags currently unused
+ *
+ * @return 0 on success, a negative AVERROR code on failure.
+ */
+int av_hwdevice_ctx_create(AVBufferRef **device_ctx, enum AVHWDeviceType type,
+                           const char *device, AVDictionary *opts, int flags);
+
+/**
+ * Create a new device of the specified type from an existing device.
+ *
+ * If the source device is a device of the target type or was originally
+ * derived from such a device (possibly through one or more intermediate
+ * devices of other types), then this will return a reference to the
+ * existing device of the same type as is requested.
+ *
+ * Otherwise, it will attempt to derive a new device from the given source
+ * device.  If direct derivation to the new type is not implemented, it will
+ * attempt the same derivation from each ancestor of the source device in
+ * turn looking for an implemented derivation method.
+ *
+ * @param dst_ctx On success, a reference to the newly-created
+ *                AVHWDeviceContext.
+ * @param type    The type of the new device to create.
+ * @param src_ctx A reference to an existing AVHWDeviceContext which will be
+ *                used to create the new device.
+ * @param flags   Currently unused; should be set to zero.
+ * @return        Zero on success, a negative AVERROR code on failure.
+ */
+int av_hwdevice_ctx_create_derived(AVBufferRef **dst_ctx,
+                                   enum AVHWDeviceType type,
+                                   AVBufferRef *src_ctx, int flags);
+
+
+/**
+ * Allocate an AVHWFramesContext tied to a given device context.
+ *
+ * @param device_ctx a reference to a AVHWDeviceContext. This function will make
+ *                   a new reference for internal use, the one passed to the
+ *                   function remains owned by the caller.
+ * @return a reference to the newly created AVHWFramesContext on success or NULL
+ *         on failure.
+ */
+AVBufferRef *av_hwframe_ctx_alloc(AVBufferRef *device_ctx);
+
+/**
+ * Finalize the context before use. This function must be called after the
+ * context is filled with all the required information and before it is attached
+ * to any frames.
+ *
+ * @param ref a reference to the AVHWFramesContext
+ * @return 0 on success, a negative AVERROR code on failure
+ */
+int av_hwframe_ctx_init(AVBufferRef *ref);
+
+/**
+ * Allocate a new frame attached to the given AVHWFramesContext.
+ *
+ * @param hwframe_ctx a reference to an AVHWFramesContext
+ * @param frame an empty (freshly allocated or unreffed) frame to be filled with
+ *              newly allocated buffers.
+ * @param flags currently unused, should be set to zero
+ * @return 0 on success, a negative AVERROR code on failure
+ */
+int av_hwframe_get_buffer(AVBufferRef *hwframe_ctx, AVFrame *frame, int flags);
+
+/**
+ * Copy data to or from a hw surface. At least one of dst/src must have an
+ * AVHWFramesContext attached.
+ *
+ * If src has an AVHWFramesContext attached, then the format of dst (if set)
+ * must use one of the formats returned by av_hwframe_transfer_get_formats(src,
+ * AV_HWFRAME_TRANSFER_DIRECTION_FROM).
+ * If dst has an AVHWFramesContext attached, then the format of src must use one
+ * of the formats returned by av_hwframe_transfer_get_formats(dst,
+ * AV_HWFRAME_TRANSFER_DIRECTION_TO)
+ *
+ * dst may be "clean" (i.e. with data/buf pointers unset), in which case the
+ * data buffers will be allocated by this function using av_frame_get_buffer().
+ * If dst->format is set, then this format will be used, otherwise (when
+ * dst->format is AV_PIX_FMT_NONE) the first acceptable format will be chosen.
+ *
+ * The two frames must have matching allocated dimensions (i.e. equal to
+ * AVHWFramesContext.width/height), since not all device types support
+ * transferring a sub-rectangle of the whole surface. The display dimensions
+ * (i.e. AVFrame.width/height) may be smaller than the allocated dimensions, but
+ * also have to be equal for both frames. When the display dimensions are
+ * smaller than the allocated dimensions, the content of the padding in the
+ * destination frame is unspecified.
+ *
+ * @param dst the destination frame. dst is not touched on failure.
+ * @param src the source frame.
+ * @param flags currently unused, should be set to zero
+ * @return 0 on success, a negative AVERROR error code on failure.
+ */
+int av_hwframe_transfer_data(AVFrame *dst, const AVFrame *src, int flags);
+
+enum AVHWFrameTransferDirection {
+    /**
+     * Transfer the data from the queried hw frame.
+     */
+    AV_HWFRAME_TRANSFER_DIRECTION_FROM,
+
+    /**
+     * Transfer the data to the queried hw frame.
+     */
+    AV_HWFRAME_TRANSFER_DIRECTION_TO,
+};
+
+/**
+ * Get a list of possible source or target formats usable in
+ * av_hwframe_transfer_data().
+ *
+ * @param hwframe_ctx the frame context to obtain the information for
+ * @param dir the direction of the transfer
+ * @param formats the pointer to the output format list will be written here.
+ *                The list is terminated with AV_PIX_FMT_NONE and must be freed
+ *                by the caller when no longer needed using av_free().
+ *                If this function returns successfully, the format list will
+ *                have at least one item (not counting the terminator).
+ *                On failure, the contents of this pointer are unspecified.
+ * @param flags currently unused, should be set to zero
+ * @return 0 on success, a negative AVERROR code on failure.
+ */
+int av_hwframe_transfer_get_formats(AVBufferRef *hwframe_ctx,
+                                    enum AVHWFrameTransferDirection dir,
+                                    enum AVPixelFormat **formats, int flags);
+
+
+/**
+ * This struct describes the constraints on hardware frames attached to
+ * a given device with a hardware-specific configuration.  This is returned
+ * by av_hwdevice_get_hwframe_constraints() and must be freed by
+ * av_hwframe_constraints_free() after use.
+ */
+typedef struct AVHWFramesConstraints {
+    /**
+     * A list of possible values for format in the hw_frames_ctx,
+     * terminated by AV_PIX_FMT_NONE.  This member will always be filled.
+     */
+    enum AVPixelFormat *valid_hw_formats;
+
+    /**
+     * A list of possible values for sw_format in the hw_frames_ctx,
+     * terminated by AV_PIX_FMT_NONE.  Can be NULL if this information is
+     * not known.
+     */
+    enum AVPixelFormat *valid_sw_formats;
+
+    /**
+     * The minimum size of frames in this hw_frames_ctx.
+     * (Zero if not known.)
+     */
+    int min_width;
+    int min_height;
+
+    /**
+     * The maximum size of frames in this hw_frames_ctx.
+     * (INT_MAX if not known / no limit.)
+     */
+    int max_width;
+    int max_height;
+} AVHWFramesConstraints;
+
+/**
+ * Allocate a HW-specific configuration structure for a given HW device.
+ * After use, the user must free all members as required by the specific
+ * hardware structure being used, then free the structure itself with
+ * av_free().
+ *
+ * @param device_ctx a reference to the associated AVHWDeviceContext.
+ * @return The newly created HW-specific configuration structure on
+ *         success or NULL on failure.
+ */
+void *av_hwdevice_hwconfig_alloc(AVBufferRef *device_ctx);
+
+/**
+ * Get the constraints on HW frames given a device and the HW-specific
+ * configuration to be used with that device.  If no HW-specific
+ * configuration is provided, returns the maximum possible capabilities
+ * of the device.
+ *
+ * @param ref a reference to the associated AVHWDeviceContext.
+ * @param hwconfig a filled HW-specific configuration structure, or NULL
+ *        to return the maximum possible capabilities of the device.
+ * @return AVHWFramesConstraints structure describing the constraints
+ *         on the device, or NULL if not available.
+ */
+AVHWFramesConstraints *av_hwdevice_get_hwframe_constraints(AVBufferRef *ref,
+                                                           const void *hwconfig);
+
+/**
+ * Free an AVHWFrameConstraints structure.
+ *
+ * @param constraints The (filled or unfilled) AVHWFrameConstraints structure.
+ */
+void av_hwframe_constraints_free(AVHWFramesConstraints **constraints);
+
+
+/**
+ * Flags to apply to frame mappings.
+ */
+enum {
+    /**
+     * The mapping must be readable.
+     */
+    AV_HWFRAME_MAP_READ      = 1 << 0,
+    /**
+     * The mapping must be writeable.
+     */
+    AV_HWFRAME_MAP_WRITE     = 1 << 1,
+    /**
+     * The mapped frame will be overwritten completely in subsequent
+     * operations, so the current frame data need not be loaded.  Any values
+     * which are not overwritten are unspecified.
+     */
+    AV_HWFRAME_MAP_OVERWRITE = 1 << 2,
+    /**
+     * The mapping must be direct.  That is, there must not be any copying in
+     * the map or unmap steps.  Note that performance of direct mappings may
+     * be much lower than normal memory.
+     */
+    AV_HWFRAME_MAP_DIRECT    = 1 << 3,
+};
+
+/**
+ * Map a hardware frame.
+ *
+ * This has a number of different possible effects, depending on the format
+ * and origin of the src and dst frames.  On input, src should be a usable
+ * frame with valid buffers and dst should be blank (typically as just created
+ * by av_frame_alloc()).  src should have an associated hwframe context, and
+ * dst may optionally have a format and associated hwframe context.
+ *
+ * If src was created by mapping a frame from the hwframe context of dst,
+ * then this function undoes the mapping - dst is replaced by a reference to
+ * the frame that src was originally mapped from.
+ *
+ * If both src and dst have an associated hwframe context, then this function
+ * attempts to map the src frame from its hardware context to that of dst and
+ * then fill dst with appropriate data to be usable there.  This will only be
+ * possible if the hwframe contexts and associated devices are compatible -
+ * given compatible devices, av_hwframe_ctx_create_derived() can be used to
+ * create a hwframe context for dst in which mapping should be possible.
+ *
+ * If src has a hwframe context but dst does not, then the src frame is
+ * mapped to normal memory and should thereafter be usable as a normal frame.
+ * If the format is set on dst, then the mapping will attempt to create dst
+ * with that format and fail if it is not possible.  If format is unset (is
+ * AV_PIX_FMT_NONE) then dst will be mapped with whatever the most appropriate
+ * format to use is (probably the sw_format of the src hwframe context).
+ *
+ * A return value of AVERROR(ENOSYS) indicates that the mapping is not
+ * possible with the given arguments and hwframe setup, while other return
+ * values indicate that it failed somehow.
+ *
+ * @param dst Destination frame, to contain the mapping.
+ * @param src Source frame, to be mapped.
+ * @param flags Some combination of AV_HWFRAME_MAP_* flags.
+ * @return Zero on success, negative AVERROR code on failure.
+ */
+int av_hwframe_map(AVFrame *dst, const AVFrame *src, int flags);
+
+
+/**
+ * Create and initialise an AVHWFramesContext as a mapping of another existing
+ * AVHWFramesContext on a different device.
+ *
+ * av_hwframe_ctx_init() should not be called after this.
+ *
+ * @param derived_frame_ctx  On success, a reference to the newly created
+ *                           AVHWFramesContext.
+ * @param derived_device_ctx A reference to the device to create the new
+ *                           AVHWFramesContext on.
+ * @param source_frame_ctx   A reference to an existing AVHWFramesContext
+ *                           which will be mapped to the derived context.
+ * @param flags  Some combination of AV_HWFRAME_MAP_* flags, defining the
+ *               mapping parameters to apply to frames which are allocated
+ *               in the derived device.
+ * @return       Zero on success, negative AVERROR code on failure.
+ */
+int av_hwframe_ctx_create_derived(AVBufferRef **derived_frame_ctx,
+                                  enum AVPixelFormat format,
+                                  AVBufferRef *derived_device_ctx,
+                                  AVBufferRef *source_frame_ctx,
+                                  int flags);
+
+#endif /* AVUTIL_HWCONTEXT_H */
diff --git a/media/ffvpx/libavutil/hwcontext_internal.h b/media/ffvpx/libavutil/hwcontext_internal.h
new file mode 100644
index 0000000000..77dc47ddd6
--- /dev/null
+++ b/media/ffvpx/libavutil/hwcontext_internal.h
@@ -0,0 +1,176 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_HWCONTEXT_INTERNAL_H
+#define AVUTIL_HWCONTEXT_INTERNAL_H
+
+#include <stddef.h>
+
+#include "buffer.h"
+#include "hwcontext.h"
+#include "frame.h"
+#include "pixfmt.h"
+
+typedef struct HWContextType {
+    enum AVHWDeviceType type;
+    const char         *name;
+
+    /**
+     * An array of pixel formats supported by the AVHWFramesContext instances
+     * Terminated by AV_PIX_FMT_NONE.
+     */
+    const enum AVPixelFormat *pix_fmts;
+
+    /**
+     * size of the public hardware-specific context,
+     * i.e. AVHWDeviceContext.hwctx
+     */
+    size_t             device_hwctx_size;
+    /**
+     * size of the private data, i.e.
+     * AVHWDeviceInternal.priv
+     */
+    size_t             device_priv_size;
+
+    /**
+     * Size of the hardware-specific device configuration.
+     * (Used to query hwframe constraints.)
+     */
+    size_t             device_hwconfig_size;
+
+    /**
+     * size of the public frame pool hardware-specific context,
+     * i.e. AVHWFramesContext.hwctx
+     */
+    size_t             frames_hwctx_size;
+    /**
+     * size of the private data, i.e.
+     * AVHWFramesInternal.priv
+     */
+    size_t             frames_priv_size;
+
+    int              (*device_create)(AVHWDeviceContext *ctx, const char *device,
+                                      AVDictionary *opts, int flags);
+    int              (*device_derive)(AVHWDeviceContext *dst_ctx,
+                                      AVHWDeviceContext *src_ctx, int flags);
+
+    int              (*device_init)(AVHWDeviceContext *ctx);
+    void             (*device_uninit)(AVHWDeviceContext *ctx);
+
+    int              (*frames_get_constraints)(AVHWDeviceContext *ctx,
+                                               const void *hwconfig,
+                                               AVHWFramesConstraints *constraints);
+
+    int              (*frames_init)(AVHWFramesContext *ctx);
+    void             (*frames_uninit)(AVHWFramesContext *ctx);
+
+    int              (*frames_get_buffer)(AVHWFramesContext *ctx, AVFrame *frame);
+    int              (*transfer_get_formats)(AVHWFramesContext *ctx,
+                                             enum AVHWFrameTransferDirection dir,
+                                             enum AVPixelFormat **formats);
+    int              (*transfer_data_to)(AVHWFramesContext *ctx, AVFrame *dst,
+                                         const AVFrame *src);
+    int              (*transfer_data_from)(AVHWFramesContext *ctx, AVFrame *dst,
+                                           const AVFrame *src);
+
+    int              (*map_to)(AVHWFramesContext *ctx, AVFrame *dst,
+                               const AVFrame *src, int flags);
+    int              (*map_from)(AVHWFramesContext *ctx, AVFrame *dst,
+                                 const AVFrame *src, int flags);
+
+    int              (*frames_derive_to)(AVHWFramesContext *dst_ctx,
+                                         AVHWFramesContext *src_ctx, int flags);
+    int              (*frames_derive_from)(AVHWFramesContext *dst_ctx,
+                                           AVHWFramesContext *src_ctx, int flags);
+} HWContextType;
+
+struct AVHWDeviceInternal {
+    const HWContextType *hw_type;
+    void                *priv;
+
+    /**
+     * For a derived device, a reference to the original device
+     * context it was derived from.
+     */
+    AVBufferRef *source_device;
+};
+
+struct AVHWFramesInternal {
+    const HWContextType *hw_type;
+    void                *priv;
+
+    AVBufferPool *pool_internal;
+
+    /**
+     * For a derived context, a reference to the original frames
+     * context it was derived from.
+     */
+    AVBufferRef *source_frames;
+    /**
+     * Flags to apply to the mapping from the source to the derived
+     * frame context when trying to allocate in the derived context.
+     */
+    int source_allocation_map_flags;
+};
+
+typedef struct HWMapDescriptor {
+    /**
+     * A reference to the original source of the mapping.
+     */
+    AVFrame *source;
+    /**
+     * A reference to the hardware frames context in which this
+     * mapping was made.  May be the same as source->hw_frames_ctx,
+     * but need not be.
+     */
+    AVBufferRef *hw_frames_ctx;
+    /**
+     * Unmap function.
+     */
+    void (*unmap)(AVHWFramesContext *ctx,
+                  struct HWMapDescriptor *hwmap);
+    /**
+     * Hardware-specific private data associated with the mapping.
+     */
+    void          *priv;
+} HWMapDescriptor;
+
+int ff_hwframe_map_create(AVBufferRef *hwframe_ref,
+                          AVFrame *dst, const AVFrame *src,
+                          void (*unmap)(AVHWFramesContext *ctx,
+                                        HWMapDescriptor *hwmap),
+                          void *priv);
+
+/**
+ * Replace the current hwmap of dst with the one from src, used for indirect
+ * mappings like VAAPI->(DRM)->OpenCL/Vulkan where a direct interop is missing
+ */
+int ff_hwframe_map_replace(AVFrame *dst, const AVFrame *src);
+
+extern const HWContextType ff_hwcontext_type_cuda;
+extern const HWContextType ff_hwcontext_type_d3d11va;
+extern const HWContextType ff_hwcontext_type_drm;
+extern const HWContextType ff_hwcontext_type_dxva2;
+extern const HWContextType ff_hwcontext_type_opencl;
+extern const HWContextType ff_hwcontext_type_qsv;
+extern const HWContextType ff_hwcontext_type_vaapi;
+extern const HWContextType ff_hwcontext_type_vdpau;
+extern const HWContextType ff_hwcontext_type_videotoolbox;
+extern const HWContextType ff_hwcontext_type_mediacodec;
+
+#endif /* AVUTIL_HWCONTEXT_INTERNAL_H */
diff --git a/media/ffvpx/libavutil/hwcontext_vaapi.c b/media/ffvpx/libavutil/hwcontext_vaapi.c
new file mode 100644
index 0000000000..ab6ce61ede
--- /dev/null
+++ b/media/ffvpx/libavutil/hwcontext_vaapi.c
@@ -0,0 +1,1691 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#if HAVE_VAAPI_X11
+#   include <va/va_x11.h>
+#endif
+#if HAVE_VAAPI_DRM
+#   include <va/va_drm.h>
+#endif
+
+#if CONFIG_LIBDRM
+#   include <va/va_drmcommon.h>
+#   include <xf86drm.h>
+#   include <drm_fourcc.h>
+#   ifndef DRM_FORMAT_MOD_INVALID
+#       define DRM_FORMAT_MOD_INVALID ((1ULL << 56) - 1)
+#   endif
+#endif
+
+#include <fcntl.h>
+#if HAVE_UNISTD_H
+#   include <unistd.h>
+#endif
+
+
+#include "avassert.h"
+#include "buffer.h"
+#include "common.h"
+#include "hwcontext.h"
+#if CONFIG_LIBDRM
+#include "hwcontext_drm.h"
+#endif
+#include "hwcontext_internal.h"
+#include "hwcontext_vaapi.h"
+#include "mem.h"
+#include "pixdesc.h"
+#include "pixfmt.h"
+
+
+typedef struct VAAPIDevicePriv {
+#if HAVE_VAAPI_X11
+    Display *x11_display;
+#endif
+
+    int drm_fd;
+} VAAPIDevicePriv;
+
+typedef struct VAAPISurfaceFormat {
+    enum AVPixelFormat pix_fmt;
+    VAImageFormat image_format;
+} VAAPISurfaceFormat;
+
+typedef struct VAAPIDeviceContext {
+    // Surface formats which can be used with this device.
+    VAAPISurfaceFormat *formats;
+    int              nb_formats;
+} VAAPIDeviceContext;
+
+typedef struct VAAPIFramesContext {
+    // Surface attributes set at create time.
+    VASurfaceAttrib *attributes;
+    int           nb_attributes;
+    // RT format of the underlying surface (Intel driver ignores this anyway).
+    unsigned int rt_format;
+    // Whether vaDeriveImage works.
+    int derive_works;
+} VAAPIFramesContext;
+
+typedef struct VAAPIMapping {
+    // Handle to the derived or copied image which is mapped.
+    VAImage image;
+    // The mapping flags actually used.
+    int flags;
+} VAAPIMapping;
+
+typedef struct VAAPIFormat {
+    unsigned int fourcc;
+    unsigned int rt_format;
+    enum AVPixelFormat pix_fmt;
+    int chroma_planes_swapped;
+} VAAPIFormatDescriptor;
+
+#define MAP(va, rt, av, swap_uv) { \
+        VA_FOURCC_ ## va, \
+        VA_RT_FORMAT_ ## rt, \
+        AV_PIX_FMT_ ## av, \
+        swap_uv, \
+    }
+// The map fourcc <-> pix_fmt isn't bijective because of the annoying U/V
+// plane swap cases.  The frame handling below tries to hide these.
+static const VAAPIFormatDescriptor vaapi_format_map[] = {
+    MAP(NV12, YUV420,  NV12,    0),
+#ifdef VA_FOURCC_I420
+    MAP(I420, YUV420,  YUV420P, 0),
+#endif
+    MAP(YV12, YUV420,  YUV420P, 1),
+    MAP(IYUV, YUV420,  YUV420P, 0),
+    MAP(422H, YUV422,  YUV422P, 0),
+#ifdef VA_FOURCC_YV16
+    MAP(YV16, YUV422,  YUV422P, 1),
+#endif
+    MAP(UYVY, YUV422,  UYVY422, 0),
+    MAP(YUY2, YUV422,  YUYV422, 0),
+    MAP(411P, YUV411,  YUV411P, 0),
+    MAP(422V, YUV422,  YUV440P, 0),
+    MAP(444P, YUV444,  YUV444P, 0),
+    MAP(Y800, YUV400,  GRAY8,   0),
+#ifdef VA_FOURCC_P010
+    MAP(P010, YUV420_10BPP, P010, 0),
+#endif
+    MAP(BGRA, RGB32,   BGRA, 0),
+    MAP(BGRX, RGB32,   BGR0, 0),
+    MAP(RGBA, RGB32,   RGBA, 0),
+    MAP(RGBX, RGB32,   RGB0, 0),
+#ifdef VA_FOURCC_ABGR
+    MAP(ABGR, RGB32,   ABGR, 0),
+    MAP(XBGR, RGB32,   0BGR, 0),
+#endif
+    MAP(ARGB, RGB32,   ARGB, 0),
+    MAP(XRGB, RGB32,   0RGB, 0),
+};
+#undef MAP
+
+static const VAAPIFormatDescriptor *
+    vaapi_format_from_fourcc(unsigned int fourcc)
+{
+    int i;
+    for (i = 0; i < FF_ARRAY_ELEMS(vaapi_format_map); i++)
+        if (vaapi_format_map[i].fourcc == fourcc)
+            return &vaapi_format_map[i];
+    return NULL;
+}
+
+static const VAAPIFormatDescriptor *
+    vaapi_format_from_pix_fmt(enum AVPixelFormat pix_fmt)
+{
+    int i;
+    for (i = 0; i < FF_ARRAY_ELEMS(vaapi_format_map); i++)
+        if (vaapi_format_map[i].pix_fmt == pix_fmt)
+            return &vaapi_format_map[i];
+    return NULL;
+}
+
+static enum AVPixelFormat vaapi_pix_fmt_from_fourcc(unsigned int fourcc)
+{
+    const VAAPIFormatDescriptor *desc;
+    desc = vaapi_format_from_fourcc(fourcc);
+    if (desc)
+        return desc->pix_fmt;
+    else
+        return AV_PIX_FMT_NONE;
+}
+
+static int vaapi_get_image_format(AVHWDeviceContext *hwdev,
+                                  enum AVPixelFormat pix_fmt,
+                                  VAImageFormat **image_format)
+{
+    VAAPIDeviceContext *ctx = hwdev->internal->priv;
+    int i;
+
+    for (i = 0; i < ctx->nb_formats; i++) {
+        if (ctx->formats[i].pix_fmt == pix_fmt) {
+            if (image_format)
+                *image_format = &ctx->formats[i].image_format;
+            return 0;
+        }
+    }
+    return AVERROR(EINVAL);
+}
+
+static int vaapi_frames_get_constraints(AVHWDeviceContext *hwdev,
+                                        const void *hwconfig,
+                                        AVHWFramesConstraints *constraints)
+{
+    AVVAAPIDeviceContext *hwctx = hwdev->hwctx;
+    const AVVAAPIHWConfig *config = hwconfig;
+    VAAPIDeviceContext *ctx = hwdev->internal->priv;
+    VASurfaceAttrib *attr_list = NULL;
+    VAStatus vas;
+    enum AVPixelFormat pix_fmt;
+    unsigned int fourcc;
+    int err, i, j, attr_count, pix_fmt_count;
+
+    if (config &&
+        !(hwctx->driver_quirks & AV_VAAPI_DRIVER_QUIRK_SURFACE_ATTRIBUTES)) {
+        attr_count = 0;
+        vas = vaQuerySurfaceAttributes(hwctx->display, config->config_id,
+                                       0, &attr_count);
+        if (vas != VA_STATUS_SUCCESS) {
+            av_log(hwdev, AV_LOG_ERROR, "Failed to query surface attributes: "
+                   "%d (%s).\n", vas, vaErrorStr(vas));
+            err = AVERROR(ENOSYS);
+            goto fail;
+        }
+
+        attr_list = av_malloc(attr_count * sizeof(*attr_list));
+        if (!attr_list) {
+            err = AVERROR(ENOMEM);
+            goto fail;
+        }
+
+        vas = vaQuerySurfaceAttributes(hwctx->display, config->config_id,
+                                       attr_list, &attr_count);
+        if (vas != VA_STATUS_SUCCESS) {
+            av_log(hwdev, AV_LOG_ERROR, "Failed to query surface attributes: "
+                   "%d (%s).\n", vas, vaErrorStr(vas));
+            err = AVERROR(ENOSYS);
+            goto fail;
+        }
+
+        pix_fmt_count = 0;
+        for (i = 0; i < attr_count; i++) {
+            switch (attr_list[i].type) {
+            case VASurfaceAttribPixelFormat:
+                fourcc = attr_list[i].value.value.i;
+                pix_fmt = vaapi_pix_fmt_from_fourcc(fourcc);
+                if (pix_fmt != AV_PIX_FMT_NONE) {
+                    ++pix_fmt_count;
+                } else {
+                    // Something unsupported - ignore.
+                }
+                break;
+            case VASurfaceAttribMinWidth:
+                constraints->min_width  = attr_list[i].value.value.i;
+                break;
+            case VASurfaceAttribMinHeight:
+                constraints->min_height = attr_list[i].value.value.i;
+                break;
+            case VASurfaceAttribMaxWidth:
+                constraints->max_width  = attr_list[i].value.value.i;
+                break;
+            case VASurfaceAttribMaxHeight:
+                constraints->max_height = attr_list[i].value.value.i;
+                break;
+            }
+        }
+        if (pix_fmt_count == 0) {
+            // Nothing usable found.  Presumably there exists something which
+            // works, so leave the set null to indicate unknown.
+            constraints->valid_sw_formats = NULL;
+        } else {
+            constraints->valid_sw_formats = av_malloc_array(pix_fmt_count + 1,
+                                                            sizeof(pix_fmt));
+            if (!constraints->valid_sw_formats) {
+                err = AVERROR(ENOMEM);
+                goto fail;
+            }
+
+            for (i = j = 0; i < attr_count; i++) {
+                if (attr_list[i].type != VASurfaceAttribPixelFormat)
+                    continue;
+                fourcc = attr_list[i].value.value.i;
+                pix_fmt = vaapi_pix_fmt_from_fourcc(fourcc);
+                if (pix_fmt != AV_PIX_FMT_NONE)
+                    constraints->valid_sw_formats[j++] = pix_fmt;
+            }
+            av_assert0(j == pix_fmt_count);
+            constraints->valid_sw_formats[j] = AV_PIX_FMT_NONE;
+        }
+    } else {
+        // No configuration supplied.
+        // Return the full set of image formats known by the implementation.
+        constraints->valid_sw_formats = av_malloc_array(ctx->nb_formats + 1,
+                                                        sizeof(pix_fmt));
+        if (!constraints->valid_sw_formats) {
+            err = AVERROR(ENOMEM);
+            goto fail;
+        }
+        for (i = 0; i < ctx->nb_formats; i++)
+            constraints->valid_sw_formats[i] = ctx->formats[i].pix_fmt;
+        constraints->valid_sw_formats[i] = AV_PIX_FMT_NONE;
+    }
+
+    constraints->valid_hw_formats = av_malloc_array(2, sizeof(pix_fmt));
+    if (!constraints->valid_hw_formats) {
+        err = AVERROR(ENOMEM);
+        goto fail;
+    }
+    constraints->valid_hw_formats[0] = AV_PIX_FMT_VAAPI;
+    constraints->valid_hw_formats[1] = AV_PIX_FMT_NONE;
+
+    err = 0;
+fail:
+    av_freep(&attr_list);
+    return err;
+}
+
+static const struct {
+    const char *friendly_name;
+    const char *match_string;
+    unsigned int quirks;
+} vaapi_driver_quirks_table[] = {
+#if !VA_CHECK_VERSION(1, 0, 0)
+    // The i965 driver did not conform before version 2.0.
+    {
+        "Intel i965 (Quick Sync)",
+        "i965",
+        AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS,
+    },
+#endif
+    {
+        "Intel iHD",
+        "ubit",
+        AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE,
+    },
+    {
+        "VDPAU wrapper",
+        "Splitted-Desktop Systems VDPAU backend for VA-API",
+        AV_VAAPI_DRIVER_QUIRK_SURFACE_ATTRIBUTES,
+    },
+};
+
+static int vaapi_device_init(AVHWDeviceContext *hwdev)
+{
+    VAAPIDeviceContext *ctx = hwdev->internal->priv;
+    AVVAAPIDeviceContext *hwctx = hwdev->hwctx;
+    VAImageFormat *image_list = NULL;
+    VAStatus vas;
+    const char *vendor_string;
+    int err, i, image_count;
+    enum AVPixelFormat pix_fmt;
+    unsigned int fourcc;
+
+    image_count = vaMaxNumImageFormats(hwctx->display);
+    if (image_count <= 0) {
+        err = AVERROR(EIO);
+        goto fail;
+    }
+    image_list = av_malloc(image_count * sizeof(*image_list));
+    if (!image_list) {
+        err = AVERROR(ENOMEM);
+        goto fail;
+    }
+    vas = vaQueryImageFormats(hwctx->display, image_list, &image_count);
+    if (vas != VA_STATUS_SUCCESS) {
+        err = AVERROR(EIO);
+        goto fail;
+    }
+
+    ctx->formats  = av_malloc(image_count * sizeof(*ctx->formats));
+    if (!ctx->formats) {
+        err = AVERROR(ENOMEM);
+        goto fail;
+    }
+    ctx->nb_formats = 0;
+    for (i = 0; i < image_count; i++) {
+        fourcc  = image_list[i].fourcc;
+        pix_fmt = vaapi_pix_fmt_from_fourcc(fourcc);
+        if (pix_fmt == AV_PIX_FMT_NONE) {
+            av_log(hwdev, AV_LOG_DEBUG, "Format %#x -> unknown.\n",
+                   fourcc);
+        } else {
+            av_log(hwdev, AV_LOG_DEBUG, "Format %#x -> %s.\n",
+                   fourcc, av_get_pix_fmt_name(pix_fmt));
+            ctx->formats[ctx->nb_formats].pix_fmt      = pix_fmt;
+            ctx->formats[ctx->nb_formats].image_format = image_list[i];
+            ++ctx->nb_formats;
+        }
+    }
+
+    vendor_string = vaQueryVendorString(hwctx->display);
+    if (vendor_string)
+        av_log(hwdev, AV_LOG_VERBOSE, "VAAPI driver: %s.\n", vendor_string);
+
+    if (hwctx->driver_quirks & AV_VAAPI_DRIVER_QUIRK_USER_SET) {
+        av_log(hwdev, AV_LOG_VERBOSE, "Using quirks set by user (%#x).\n",
+               hwctx->driver_quirks);
+    } else {
+        // Detect the driver in use and set quirk flags if necessary.
+        hwctx->driver_quirks = 0;
+        if (vendor_string) {
+            for (i = 0; i < FF_ARRAY_ELEMS(vaapi_driver_quirks_table); i++) {
+                if (strstr(vendor_string,
+                           vaapi_driver_quirks_table[i].match_string)) {
+                    av_log(hwdev, AV_LOG_VERBOSE, "Matched driver string "
+                           "as known nonstandard driver \"%s\", setting "
+                           "quirks (%#x).\n",
+                           vaapi_driver_quirks_table[i].friendly_name,
+                           vaapi_driver_quirks_table[i].quirks);
+                    hwctx->driver_quirks |=
+                        vaapi_driver_quirks_table[i].quirks;
+                    break;
+                }
+            }
+            if (!(i < FF_ARRAY_ELEMS(vaapi_driver_quirks_table))) {
+                av_log(hwdev, AV_LOG_VERBOSE, "Driver not found in known "
+                       "nonstandard list, using standard behaviour.\n");
+            }
+        } else {
+            av_log(hwdev, AV_LOG_VERBOSE, "Driver has no vendor string, "
+                   "assuming standard behaviour.\n");
+        }
+    }
+
+    av_free(image_list);
+    return 0;
+fail:
+    av_freep(&ctx->formats);
+    av_free(image_list);
+    return err;
+}
+
+static void vaapi_device_uninit(AVHWDeviceContext *hwdev)
+{
+    VAAPIDeviceContext *ctx = hwdev->internal->priv;
+
+    av_freep(&ctx->formats);
+}
+
+static void vaapi_buffer_free(void *opaque, uint8_t *data)
+{
+    AVHWFramesContext     *hwfc = opaque;
+    AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
+    VASurfaceID surface_id;
+    VAStatus vas;
+
+    surface_id = (VASurfaceID)(uintptr_t)data;
+
+    vas = vaDestroySurfaces(hwctx->display, &surface_id, 1);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to destroy surface %#x: "
+               "%d (%s).\n", surface_id, vas, vaErrorStr(vas));
+    }
+}
+
+static AVBufferRef *vaapi_pool_alloc(void *opaque, int size)
+{
+    AVHWFramesContext     *hwfc = opaque;
+    VAAPIFramesContext     *ctx = hwfc->internal->priv;
+    AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
+    AVVAAPIFramesContext  *avfc = hwfc->hwctx;
+    VASurfaceID surface_id;
+    VAStatus vas;
+    AVBufferRef *ref;
+
+    if (hwfc->initial_pool_size > 0 &&
+        avfc->nb_surfaces >= hwfc->initial_pool_size)
+        return NULL;
+
+    vas = vaCreateSurfaces(hwctx->display, ctx->rt_format,
+                           hwfc->width, hwfc->height,
+                           &surface_id, 1,
+                           ctx->attributes, ctx->nb_attributes);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to create surface: "
+               "%d (%s).\n", vas, vaErrorStr(vas));
+        return NULL;
+    }
+    av_log(hwfc, AV_LOG_DEBUG, "Created surface %#x.\n", surface_id);
+
+    ref = av_buffer_create((uint8_t*)(uintptr_t)surface_id,
+                           sizeof(surface_id), &vaapi_buffer_free,
+                           hwfc, AV_BUFFER_FLAG_READONLY);
+    if (!ref) {
+        vaDestroySurfaces(hwctx->display, &surface_id, 1);
+        return NULL;
+    }
+
+    if (hwfc->initial_pool_size > 0) {
+        // This is a fixed-size pool, so we must still be in the initial
+        // allocation sequence.
+        av_assert0(avfc->nb_surfaces < hwfc->initial_pool_size);
+        avfc->surface_ids[avfc->nb_surfaces] = surface_id;
+        ++avfc->nb_surfaces;
+    }
+
+    return ref;
+}
+
+static int vaapi_frames_init(AVHWFramesContext *hwfc)
+{
+    AVVAAPIFramesContext  *avfc = hwfc->hwctx;
+    VAAPIFramesContext     *ctx = hwfc->internal->priv;
+    AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
+    const VAAPIFormatDescriptor *desc;
+    VAImageFormat *expected_format;
+    AVBufferRef *test_surface = NULL;
+    VASurfaceID test_surface_id;
+    VAImage test_image;
+    VAStatus vas;
+    int err, i;
+
+    desc = vaapi_format_from_pix_fmt(hwfc->sw_format);
+    if (!desc) {
+        av_log(hwfc, AV_LOG_ERROR, "Unsupported format: %s.\n",
+               av_get_pix_fmt_name(hwfc->sw_format));
+        return AVERROR(EINVAL);
+    }
+
+    if (!hwfc->pool) {
+        if (!(hwctx->driver_quirks & AV_VAAPI_DRIVER_QUIRK_SURFACE_ATTRIBUTES)) {
+            int need_memory_type = !(hwctx->driver_quirks & AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE);
+            int need_pixel_format = 1;
+            for (i = 0; i < avfc->nb_attributes; i++) {
+                if (avfc->attributes[i].type == VASurfaceAttribMemoryType)
+                    need_memory_type  = 0;
+                if (avfc->attributes[i].type == VASurfaceAttribPixelFormat)
+                    need_pixel_format = 0;
+            }
+            ctx->nb_attributes =
+                avfc->nb_attributes + need_memory_type + need_pixel_format;
+
+            ctx->attributes = av_malloc(ctx->nb_attributes *
+                                        sizeof(*ctx->attributes));
+            if (!ctx->attributes) {
+                err = AVERROR(ENOMEM);
+                goto fail;
+            }
+
+            for (i = 0; i < avfc->nb_attributes; i++)
+                ctx->attributes[i] = avfc->attributes[i];
+            if (need_memory_type) {
+                ctx->attributes[i++] = (VASurfaceAttrib) {
+                    .type          = VASurfaceAttribMemoryType,
+                    .flags         = VA_SURFACE_ATTRIB_SETTABLE,
+                    .value.type    = VAGenericValueTypeInteger,
+                    .value.value.i = VA_SURFACE_ATTRIB_MEM_TYPE_VA,
+                };
+            }
+            if (need_pixel_format) {
+                ctx->attributes[i++] = (VASurfaceAttrib) {
+                    .type          = VASurfaceAttribPixelFormat,
+                    .flags         = VA_SURFACE_ATTRIB_SETTABLE,
+                    .value.type    = VAGenericValueTypeInteger,
+                    .value.value.i = desc->fourcc,
+                };
+            }
+            av_assert0(i == ctx->nb_attributes);
+        } else {
+            ctx->attributes = NULL;
+            ctx->nb_attributes = 0;
+        }
+
+        ctx->rt_format = desc->rt_format;
+
+        if (hwfc->initial_pool_size > 0) {
+            // This pool will be usable as a render target, so we need to store
+            // all of the surface IDs somewhere that vaCreateContext() calls
+            // will be able to access them.
+            avfc->nb_surfaces = 0;
+            avfc->surface_ids = av_malloc(hwfc->initial_pool_size *
+                                          sizeof(*avfc->surface_ids));
+            if (!avfc->surface_ids) {
+                err = AVERROR(ENOMEM);
+                goto fail;
+            }
+        } else {
+            // This pool allows dynamic sizing, and will not be usable as a
+            // render target.
+            avfc->nb_surfaces = 0;
+            avfc->surface_ids = NULL;
+        }
+
+        hwfc->internal->pool_internal =
+            av_buffer_pool_init2(sizeof(VASurfaceID), hwfc,
+                                 &vaapi_pool_alloc, NULL);
+        if (!hwfc->internal->pool_internal) {
+            av_log(hwfc, AV_LOG_ERROR, "Failed to create VAAPI surface pool.\n");
+            err = AVERROR(ENOMEM);
+            goto fail;
+        }
+    }
+
+    // Allocate a single surface to test whether vaDeriveImage() is going
+    // to work for the specific configuration.
+    if (hwfc->pool) {
+        test_surface = av_buffer_pool_get(hwfc->pool);
+        if (!test_surface) {
+            av_log(hwfc, AV_LOG_ERROR, "Unable to allocate a surface from "
+                   "user-configured buffer pool.\n");
+            err = AVERROR(ENOMEM);
+            goto fail;
+        }
+    } else {
+        test_surface = av_buffer_pool_get(hwfc->internal->pool_internal);
+        if (!test_surface) {
+            av_log(hwfc, AV_LOG_ERROR, "Unable to allocate a surface from "
+                   "internal buffer pool.\n");
+            err = AVERROR(ENOMEM);
+            goto fail;
+        }
+    }
+    test_surface_id = (VASurfaceID)(uintptr_t)test_surface->data;
+
+    ctx->derive_works = 0;
+
+    err = vaapi_get_image_format(hwfc->device_ctx,
+                                 hwfc->sw_format, &expected_format);
+    if (err == 0) {
+        vas = vaDeriveImage(hwctx->display, test_surface_id, &test_image);
+        if (vas == VA_STATUS_SUCCESS) {
+            if (expected_format->fourcc == test_image.format.fourcc) {
+                av_log(hwfc, AV_LOG_DEBUG, "Direct mapping possible.\n");
+                ctx->derive_works = 1;
+            } else {
+                av_log(hwfc, AV_LOG_DEBUG, "Direct mapping disabled: "
+                       "derived image format %08x does not match "
+                       "expected format %08x.\n",
+                       expected_format->fourcc, test_image.format.fourcc);
+            }
+            vaDestroyImage(hwctx->display, test_image.image_id);
+        } else {
+            av_log(hwfc, AV_LOG_DEBUG, "Direct mapping disabled: "
+                   "deriving image does not work: "
+                   "%d (%s).\n", vas, vaErrorStr(vas));
+        }
+    } else {
+        av_log(hwfc, AV_LOG_DEBUG, "Direct mapping disabled: "
+               "image format is not supported.\n");
+    }
+
+    av_buffer_unref(&test_surface);
+    return 0;
+
+fail:
+    av_buffer_unref(&test_surface);
+    av_freep(&avfc->surface_ids);
+    av_freep(&ctx->attributes);
+    return err;
+}
+
+static void vaapi_frames_uninit(AVHWFramesContext *hwfc)
+{
+    AVVAAPIFramesContext *avfc = hwfc->hwctx;
+    VAAPIFramesContext    *ctx = hwfc->internal->priv;
+
+    av_freep(&avfc->surface_ids);
+    av_freep(&ctx->attributes);
+}
+
+static int vaapi_get_buffer(AVHWFramesContext *hwfc, AVFrame *frame)
+{
+    frame->buf[0] = av_buffer_pool_get(hwfc->pool);
+    if (!frame->buf[0])
+        return AVERROR(ENOMEM);
+
+    frame->data[3] = frame->buf[0]->data;
+    frame->format  = AV_PIX_FMT_VAAPI;
+    frame->width   = hwfc->width;
+    frame->height  = hwfc->height;
+
+    return 0;
+}
+
+static int vaapi_transfer_get_formats(AVHWFramesContext *hwfc,
+                                      enum AVHWFrameTransferDirection dir,
+                                      enum AVPixelFormat **formats)
+{
+    VAAPIDeviceContext *ctx = hwfc->device_ctx->internal->priv;
+    enum AVPixelFormat *pix_fmts;
+    int i, k, sw_format_available;
+
+    sw_format_available = 0;
+    for (i = 0; i < ctx->nb_formats; i++) {
+        if (ctx->formats[i].pix_fmt == hwfc->sw_format)
+            sw_format_available = 1;
+    }
+
+    pix_fmts = av_malloc((ctx->nb_formats + 1) * sizeof(*pix_fmts));
+    if (!pix_fmts)
+        return AVERROR(ENOMEM);
+
+    if (sw_format_available) {
+        pix_fmts[0] = hwfc->sw_format;
+        k = 1;
+    } else {
+        k = 0;
+    }
+    for (i = 0; i < ctx->nb_formats; i++) {
+        if (ctx->formats[i].pix_fmt == hwfc->sw_format)
+            continue;
+        av_assert0(k < ctx->nb_formats);
+        pix_fmts[k++] = ctx->formats[i].pix_fmt;
+    }
+    pix_fmts[k] = AV_PIX_FMT_NONE;
+
+    *formats = pix_fmts;
+    return 0;
+}
+
+static void vaapi_unmap_frame(AVHWFramesContext *hwfc,
+                              HWMapDescriptor *hwmap)
+{
+    AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
+    VAAPIMapping           *map = hwmap->priv;
+    VASurfaceID surface_id;
+    VAStatus vas;
+
+    surface_id = (VASurfaceID)(uintptr_t)hwmap->source->data[3];
+    av_log(hwfc, AV_LOG_DEBUG, "Unmap surface %#x.\n", surface_id);
+
+    vas = vaUnmapBuffer(hwctx->display, map->image.buf);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to unmap image from surface "
+               "%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
+    }
+
+    if ((map->flags & AV_HWFRAME_MAP_WRITE) &&
+        !(map->flags & AV_HWFRAME_MAP_DIRECT)) {
+        vas = vaPutImage(hwctx->display, surface_id, map->image.image_id,
+                         0, 0, hwfc->width, hwfc->height,
+                         0, 0, hwfc->width, hwfc->height);
+        if (vas != VA_STATUS_SUCCESS) {
+            av_log(hwfc, AV_LOG_ERROR, "Failed to write image to surface "
+                   "%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
+        }
+    }
+
+    vas = vaDestroyImage(hwctx->display, map->image.image_id);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to destroy image from surface "
+               "%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
+    }
+
+    av_free(map);
+}
+
+static int vaapi_map_frame(AVHWFramesContext *hwfc,
+                           AVFrame *dst, const AVFrame *src, int flags)
+{
+    AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
+    VAAPIFramesContext *ctx = hwfc->internal->priv;
+    VASurfaceID surface_id;
+    const VAAPIFormatDescriptor *desc;
+    VAImageFormat *image_format;
+    VAAPIMapping *map;
+    VAStatus vas;
+    void *address = NULL;
+    int err, i;
+
+    surface_id = (VASurfaceID)(uintptr_t)src->data[3];
+    av_log(hwfc, AV_LOG_DEBUG, "Map surface %#x.\n", surface_id);
+
+    if (!ctx->derive_works && (flags & AV_HWFRAME_MAP_DIRECT)) {
+        // Requested direct mapping but it is not possible.
+        return AVERROR(EINVAL);
+    }
+    if (dst->format == AV_PIX_FMT_NONE)
+        dst->format = hwfc->sw_format;
+    if (dst->format != hwfc->sw_format && (flags & AV_HWFRAME_MAP_DIRECT)) {
+        // Requested direct mapping but the formats do not match.
+        return AVERROR(EINVAL);
+    }
+
+    err = vaapi_get_image_format(hwfc->device_ctx, dst->format, &image_format);
+    if (err < 0) {
+        // Requested format is not a valid output format.
+        return AVERROR(EINVAL);
+    }
+
+    map = av_malloc(sizeof(*map));
+    if (!map)
+        return AVERROR(ENOMEM);
+    map->flags = flags;
+    map->image.image_id = VA_INVALID_ID;
+
+    vas = vaSyncSurface(hwctx->display, surface_id);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to sync surface "
+               "%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
+        err = AVERROR(EIO);
+        goto fail;
+    }
+
+    // The memory which we map using derive need not be connected to the CPU
+    // in a way conducive to fast access.  On Gen7-Gen9 Intel graphics, the
+    // memory is mappable but not cached, so normal memcpy()-like access is
+    // very slow to read it (but writing is ok).  It is possible to read much
+    // faster with a copy routine which is aware of the limitation, but we
+    // assume for now that the user is not aware of that and would therefore
+    // prefer not to be given direct-mapped memory if they request read access.
+    if (ctx->derive_works && dst->format == hwfc->sw_format &&
+        ((flags & AV_HWFRAME_MAP_DIRECT) || !(flags & AV_HWFRAME_MAP_READ))) {
+        vas = vaDeriveImage(hwctx->display, surface_id, &map->image);
+        if (vas != VA_STATUS_SUCCESS) {
+            av_log(hwfc, AV_LOG_ERROR, "Failed to derive image from "
+                   "surface %#x: %d (%s).\n",
+                   surface_id, vas, vaErrorStr(vas));
+            err = AVERROR(EIO);
+            goto fail;
+        }
+        if (map->image.format.fourcc != image_format->fourcc) {
+            av_log(hwfc, AV_LOG_ERROR, "Derive image of surface %#x "
+                   "is in wrong format: expected %#08x, got %#08x.\n",
+                   surface_id, image_format->fourcc, map->image.format.fourcc);
+            err = AVERROR(EIO);
+            goto fail;
+        }
+        map->flags |= AV_HWFRAME_MAP_DIRECT;
+    } else {
+        vas = vaCreateImage(hwctx->display, image_format,
+                            hwfc->width, hwfc->height, &map->image);
+        if (vas != VA_STATUS_SUCCESS) {
+            av_log(hwfc, AV_LOG_ERROR, "Failed to create image for "
+                   "surface %#x: %d (%s).\n",
+                   surface_id, vas, vaErrorStr(vas));
+            err = AVERROR(EIO);
+            goto fail;
+        }
+        if (!(flags & AV_HWFRAME_MAP_OVERWRITE)) {
+            vas = vaGetImage(hwctx->display, surface_id, 0, 0,
+                             hwfc->width, hwfc->height, map->image.image_id);
+            if (vas != VA_STATUS_SUCCESS) {
+                av_log(hwfc, AV_LOG_ERROR, "Failed to read image from "
+                       "surface %#x: %d (%s).\n",
+                       surface_id, vas, vaErrorStr(vas));
+                err = AVERROR(EIO);
+                goto fail;
+            }
+        }
+    }
+
+    vas = vaMapBuffer(hwctx->display, map->image.buf, &address);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to map image from surface "
+               "%#x: %d (%s).\n", surface_id, vas, vaErrorStr(vas));
+        err = AVERROR(EIO);
+        goto fail;
+    }
+
+    err = ff_hwframe_map_create(src->hw_frames_ctx,
+                                dst, src, &vaapi_unmap_frame, map);
+    if (err < 0)
+        goto fail;
+
+    dst->width  = src->width;
+    dst->height = src->height;
+
+    for (i = 0; i < map->image.num_planes; i++) {
+        dst->data[i] = (uint8_t*)address + map->image.offsets[i];
+        dst->linesize[i] = map->image.pitches[i];
+    }
+
+    desc = vaapi_format_from_fourcc(map->image.format.fourcc);
+    if (desc && desc->chroma_planes_swapped) {
+        // Chroma planes are YVU rather than YUV, so swap them.
+        FFSWAP(uint8_t*, dst->data[1], dst->data[2]);
+    }
+
+    return 0;
+
+fail:
+    if (map) {
+        if (address)
+            vaUnmapBuffer(hwctx->display, map->image.buf);
+        if (map->image.image_id != VA_INVALID_ID)
+            vaDestroyImage(hwctx->display, map->image.image_id);
+        av_free(map);
+    }
+    return err;
+}
+
+static int vaapi_transfer_data_from(AVHWFramesContext *hwfc,
+                                    AVFrame *dst, const AVFrame *src)
+{
+    AVFrame *map;
+    int err;
+
+    if (dst->width > hwfc->width || dst->height > hwfc->height)
+        return AVERROR(EINVAL);
+
+    map = av_frame_alloc();
+    if (!map)
+        return AVERROR(ENOMEM);
+    map->format = dst->format;
+
+    err = vaapi_map_frame(hwfc, map, src, AV_HWFRAME_MAP_READ);
+    if (err)
+        goto fail;
+
+    map->width  = dst->width;
+    map->height = dst->height;
+
+    err = av_frame_copy(dst, map);
+    if (err)
+        goto fail;
+
+    err = 0;
+fail:
+    av_frame_free(&map);
+    return err;
+}
+
+static int vaapi_transfer_data_to(AVHWFramesContext *hwfc,
+                                  AVFrame *dst, const AVFrame *src)
+{
+    AVFrame *map;
+    int err;
+
+    if (src->width > hwfc->width || src->height > hwfc->height)
+        return AVERROR(EINVAL);
+
+    map = av_frame_alloc();
+    if (!map)
+        return AVERROR(ENOMEM);
+    map->format = src->format;
+
+    err = vaapi_map_frame(hwfc, map, dst, AV_HWFRAME_MAP_WRITE | AV_HWFRAME_MAP_OVERWRITE);
+    if (err)
+        goto fail;
+
+    map->width  = src->width;
+    map->height = src->height;
+
+    err = av_frame_copy(map, src);
+    if (err)
+        goto fail;
+
+    err = 0;
+fail:
+    av_frame_free(&map);
+    return err;
+}
+
+static int vaapi_map_to_memory(AVHWFramesContext *hwfc, AVFrame *dst,
+                               const AVFrame *src, int flags)
+{
+    int err;
+
+    if (dst->format != AV_PIX_FMT_NONE) {
+        err = vaapi_get_image_format(hwfc->device_ctx, dst->format, NULL);
+        if (err < 0)
+            return AVERROR(ENOSYS);
+    }
+
+    err = vaapi_map_frame(hwfc, dst, src, flags);
+    if (err)
+        return err;
+
+    err = av_frame_copy_props(dst, src);
+    if (err)
+        return err;
+
+    return 0;
+}
+
+#if CONFIG_LIBDRM
+
+#define DRM_MAP(va, layers, ...) { \
+        VA_FOURCC_ ## va, \
+        layers, \
+        { __VA_ARGS__ } \
+    }
+static const struct {
+    uint32_t va_fourcc;
+    int   nb_layer_formats;
+    uint32_t layer_formats[AV_DRM_MAX_PLANES];
+} vaapi_drm_format_map[] = {
+#ifdef DRM_FORMAT_R8
+    DRM_MAP(NV12, 2, DRM_FORMAT_R8,  DRM_FORMAT_RG88),
+#endif
+    DRM_MAP(NV12, 1, DRM_FORMAT_NV12),
+#if defined(VA_FOURCC_P010) && defined(DRM_FORMAT_R16)
+    DRM_MAP(P010, 2, DRM_FORMAT_R16, DRM_FORMAT_RG1616),
+#endif
+    DRM_MAP(BGRA, 1, DRM_FORMAT_ARGB8888),
+    DRM_MAP(BGRX, 1, DRM_FORMAT_XRGB8888),
+    DRM_MAP(RGBA, 1, DRM_FORMAT_ABGR8888),
+    DRM_MAP(RGBX, 1, DRM_FORMAT_XBGR8888),
+#ifdef VA_FOURCC_ABGR
+    DRM_MAP(ABGR, 1, DRM_FORMAT_RGBA8888),
+    DRM_MAP(XBGR, 1, DRM_FORMAT_RGBX8888),
+#endif
+    DRM_MAP(ARGB, 1, DRM_FORMAT_BGRA8888),
+    DRM_MAP(XRGB, 1, DRM_FORMAT_BGRX8888),
+};
+#undef DRM_MAP
+
+static void vaapi_unmap_from_drm(AVHWFramesContext *dst_fc,
+                                 HWMapDescriptor *hwmap)
+{
+    AVVAAPIDeviceContext *dst_dev = dst_fc->device_ctx->hwctx;
+
+    VASurfaceID surface_id = (VASurfaceID)(uintptr_t)hwmap->priv;
+
+    av_log(dst_fc, AV_LOG_DEBUG, "Destroy surface %#x.\n", surface_id);
+
+    vaDestroySurfaces(dst_dev->display, &surface_id, 1);
+}
+
+static int vaapi_map_from_drm(AVHWFramesContext *src_fc, AVFrame *dst,
+                              const AVFrame *src, int flags)
+{
+    AVHWFramesContext      *dst_fc =
+        (AVHWFramesContext*)dst->hw_frames_ctx->data;
+    AVVAAPIDeviceContext  *dst_dev = dst_fc->device_ctx->hwctx;
+    const AVDRMFrameDescriptor *desc;
+    const VAAPIFormatDescriptor *format_desc;
+    VASurfaceID surface_id;
+    VAStatus vas;
+    uint32_t va_fourcc;
+    int err, i, j, k;
+
+    unsigned long buffer_handle;
+    VASurfaceAttribExternalBuffers buffer_desc;
+    VASurfaceAttrib attrs[2] = {
+        {
+            .type  = VASurfaceAttribMemoryType,
+            .flags = VA_SURFACE_ATTRIB_SETTABLE,
+            .value.type    = VAGenericValueTypeInteger,
+            .value.value.i = VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME,
+        },
+        {
+            .type  = VASurfaceAttribExternalBufferDescriptor,
+            .flags = VA_SURFACE_ATTRIB_SETTABLE,
+            .value.type    = VAGenericValueTypePointer,
+            .value.value.p = &buffer_desc,
+        }
+    };
+
+    desc = (AVDRMFrameDescriptor*)src->data[0];
+
+    if (desc->nb_objects != 1) {
+        av_log(dst_fc, AV_LOG_ERROR, "VAAPI can only map frames "
+               "made from a single DRM object.\n");
+        return AVERROR(EINVAL);
+    }
+
+    va_fourcc = 0;
+    for (i = 0; i < FF_ARRAY_ELEMS(vaapi_drm_format_map); i++) {
+        if (desc->nb_layers != vaapi_drm_format_map[i].nb_layer_formats)
+            continue;
+        for (j = 0; j < desc->nb_layers; j++) {
+            if (desc->layers[j].format !=
+                vaapi_drm_format_map[i].layer_formats[j])
+                break;
+        }
+        if (j != desc->nb_layers)
+            continue;
+        va_fourcc = vaapi_drm_format_map[i].va_fourcc;
+        break;
+    }
+    if (!va_fourcc) {
+        av_log(dst_fc, AV_LOG_ERROR, "DRM format not supported "
+               "by VAAPI.\n");
+        return AVERROR(EINVAL);
+    }
+
+    av_log(dst_fc, AV_LOG_DEBUG, "Map DRM object %d to VAAPI as "
+           "%08x.\n", desc->objects[0].fd, va_fourcc);
+
+    format_desc = vaapi_format_from_fourcc(va_fourcc);
+    av_assert0(format_desc);
+
+    buffer_handle = desc->objects[0].fd;
+    buffer_desc.pixel_format = va_fourcc;
+    buffer_desc.width        = src_fc->width;
+    buffer_desc.height       = src_fc->height;
+    buffer_desc.data_size    = desc->objects[0].size;
+    buffer_desc.buffers      = &buffer_handle;
+    buffer_desc.num_buffers  = 1;
+    buffer_desc.flags        = 0;
+
+    k = 0;
+    for (i = 0; i < desc->nb_layers; i++) {
+        for (j = 0; j < desc->layers[i].nb_planes; j++) {
+            buffer_desc.pitches[k] = desc->layers[i].planes[j].pitch;
+            buffer_desc.offsets[k] = desc->layers[i].planes[j].offset;
+            ++k;
+        }
+    }
+    buffer_desc.num_planes = k;
+
+    if (format_desc->chroma_planes_swapped &&
+        buffer_desc.num_planes == 3) {
+        FFSWAP(uint32_t, buffer_desc.pitches[1], buffer_desc.pitches[2]);
+        FFSWAP(uint32_t, buffer_desc.offsets[1], buffer_desc.offsets[2]);
+    }
+
+    vas = vaCreateSurfaces(dst_dev->display, format_desc->rt_format,
+                           src->width, src->height,
+                           &surface_id, 1,
+                           attrs, FF_ARRAY_ELEMS(attrs));
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(dst_fc, AV_LOG_ERROR, "Failed to create surface from DRM "
+               "object: %d (%s).\n", vas, vaErrorStr(vas));
+        return AVERROR(EIO);
+    }
+    av_log(dst_fc, AV_LOG_DEBUG, "Create surface %#x.\n", surface_id);
+
+    err = ff_hwframe_map_create(dst->hw_frames_ctx, dst, src,
+                                &vaapi_unmap_from_drm,
+                                (void*)(uintptr_t)surface_id);
+    if (err < 0)
+        return err;
+
+    dst->width   = src->width;
+    dst->height  = src->height;
+    dst->data[3] = (uint8_t*)(uintptr_t)surface_id;
+
+    av_log(dst_fc, AV_LOG_DEBUG, "Mapped DRM object %d to "
+           "surface %#x.\n", desc->objects[0].fd, surface_id);
+
+    return 0;
+}
+
+#if VA_CHECK_VERSION(1, 1, 0)
+static void vaapi_unmap_to_drm_esh(AVHWFramesContext *hwfc,
+                                   HWMapDescriptor *hwmap)
+{
+    AVDRMFrameDescriptor *drm_desc = hwmap->priv;
+    int i;
+
+    for (i = 0; i < drm_desc->nb_objects; i++)
+        close(drm_desc->objects[i].fd);
+
+    av_freep(&drm_desc);
+}
+
+static int vaapi_map_to_drm_esh(AVHWFramesContext *hwfc, AVFrame *dst,
+                                const AVFrame *src, int flags)
+{
+    AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
+    VASurfaceID surface_id;
+    VAStatus vas;
+    VADRMPRIMESurfaceDescriptor va_desc;
+    AVDRMFrameDescriptor *drm_desc = NULL;
+    uint32_t export_flags;
+    int err, i, j;
+
+    surface_id = (VASurfaceID)(uintptr_t)src->data[3];
+
+    export_flags = VA_EXPORT_SURFACE_SEPARATE_LAYERS;
+    if (flags & AV_HWFRAME_MAP_READ)
+        export_flags |= VA_EXPORT_SURFACE_READ_ONLY;
+    if (flags & AV_HWFRAME_MAP_WRITE)
+        export_flags |= VA_EXPORT_SURFACE_WRITE_ONLY;
+
+    vas = vaExportSurfaceHandle(hwctx->display, surface_id,
+                                VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2,
+                                export_flags, &va_desc);
+    if (vas != VA_STATUS_SUCCESS) {
+        if (vas == VA_STATUS_ERROR_UNIMPLEMENTED)
+            return AVERROR(ENOSYS);
+        av_log(hwfc, AV_LOG_ERROR, "Failed to export surface %#x: "
+               "%d (%s).\n", surface_id, vas, vaErrorStr(vas));
+        return AVERROR(EIO);
+    }
+
+    drm_desc = av_mallocz(sizeof(*drm_desc));
+    if (!drm_desc) {
+        err = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    // By some bizarre coincidence, these structures are very similar...
+    drm_desc->nb_objects = va_desc.num_objects;
+    for (i = 0; i < va_desc.num_objects; i++) {
+        drm_desc->objects[i].fd   = va_desc.objects[i].fd;
+        drm_desc->objects[i].size = va_desc.objects[i].size;
+        drm_desc->objects[i].format_modifier =
+            va_desc.objects[i].drm_format_modifier;
+    }
+    drm_desc->nb_layers = va_desc.num_layers;
+    for (i = 0; i < va_desc.num_layers; i++) {
+        drm_desc->layers[i].format    = va_desc.layers[i].drm_format;
+        drm_desc->layers[i].nb_planes = va_desc.layers[i].num_planes;
+        for (j = 0; j < va_desc.layers[i].num_planes; j++) {
+            drm_desc->layers[i].planes[j].object_index =
+                va_desc.layers[i].object_index[j];
+            drm_desc->layers[i].planes[j].offset =
+                va_desc.layers[i].offset[j];
+            drm_desc->layers[i].planes[j].pitch =
+                va_desc.layers[i].pitch[j];
+        }
+    }
+
+    err = ff_hwframe_map_create(src->hw_frames_ctx, dst, src,
+                                &vaapi_unmap_to_drm_esh, drm_desc);
+    if (err < 0)
+        goto fail;
+
+    dst->width   = src->width;
+    dst->height  = src->height;
+    dst->data[0] = (uint8_t*)drm_desc;
+
+    return 0;
+
+fail:
+    for (i = 0; i < va_desc.num_objects; i++)
+        close(va_desc.objects[i].fd);
+    av_freep(&drm_desc);
+    return err;
+}
+#endif
+
+#if VA_CHECK_VERSION(0, 36, 0)
+typedef struct VAAPIDRMImageBufferMapping {
+    VAImage      image;
+    VABufferInfo buffer_info;
+
+    AVDRMFrameDescriptor drm_desc;
+} VAAPIDRMImageBufferMapping;
+
+static void vaapi_unmap_to_drm_abh(AVHWFramesContext *hwfc,
+                                  HWMapDescriptor *hwmap)
+{
+    AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
+    VAAPIDRMImageBufferMapping *mapping = hwmap->priv;
+    VASurfaceID surface_id;
+    VAStatus vas;
+
+    surface_id = (VASurfaceID)(uintptr_t)hwmap->source->data[3];
+    av_log(hwfc, AV_LOG_DEBUG, "Unmap VAAPI surface %#x from DRM.\n",
+           surface_id);
+
+    // DRM PRIME file descriptors are closed by vaReleaseBufferHandle(),
+    // so we shouldn't close them separately.
+
+    vas = vaReleaseBufferHandle(hwctx->display, mapping->image.buf);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to release buffer "
+               "handle of image %#x (derived from surface %#x): "
+               "%d (%s).\n", mapping->image.buf, surface_id,
+               vas, vaErrorStr(vas));
+    }
+
+    vas = vaDestroyImage(hwctx->display, mapping->image.image_id);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to destroy image "
+               "derived from surface %#x: %d (%s).\n",
+               surface_id, vas, vaErrorStr(vas));
+    }
+
+    av_free(mapping);
+}
+
+static int vaapi_map_to_drm_abh(AVHWFramesContext *hwfc, AVFrame *dst,
+                                const AVFrame *src, int flags)
+{
+    AVVAAPIDeviceContext *hwctx = hwfc->device_ctx->hwctx;
+    VAAPIDRMImageBufferMapping *mapping = NULL;
+    VASurfaceID surface_id;
+    VAStatus vas;
+    int err, i, p;
+
+    surface_id = (VASurfaceID)(uintptr_t)src->data[3];
+    av_log(hwfc, AV_LOG_DEBUG, "Map VAAPI surface %#x to DRM.\n",
+           surface_id);
+
+    mapping = av_mallocz(sizeof(*mapping));
+    if (!mapping)
+        return AVERROR(ENOMEM);
+
+    vas = vaDeriveImage(hwctx->display, surface_id,
+                        &mapping->image);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to derive image from "
+               "surface %#x: %d (%s).\n",
+               surface_id, vas, vaErrorStr(vas));
+        err = AVERROR(EIO);
+        goto fail;
+    }
+
+    for (i = 0; i < FF_ARRAY_ELEMS(vaapi_drm_format_map); i++) {
+        if (vaapi_drm_format_map[i].va_fourcc ==
+            mapping->image.format.fourcc)
+            break;
+    }
+    if (i >= FF_ARRAY_ELEMS(vaapi_drm_format_map)) {
+        av_log(hwfc, AV_LOG_ERROR, "No matching DRM format for "
+               "VAAPI format %#x.\n", mapping->image.format.fourcc);
+        err = AVERROR(EINVAL);
+        goto fail_derived;
+    }
+
+    mapping->buffer_info.mem_type =
+        VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME;
+
+    mapping->drm_desc.nb_layers =
+        vaapi_drm_format_map[i].nb_layer_formats;
+    if (mapping->drm_desc.nb_layers > 1) {
+        if (mapping->drm_desc.nb_layers != mapping->image.num_planes) {
+            av_log(hwfc, AV_LOG_ERROR, "Image properties do not match "
+                   "expected format: got %d planes, but expected %d.\n",
+                   mapping->image.num_planes, mapping->drm_desc.nb_layers);
+            err = AVERROR(EINVAL);
+            goto fail_derived;
+        }
+
+        for(p = 0; p < mapping->drm_desc.nb_layers; p++) {
+            mapping->drm_desc.layers[p] = (AVDRMLayerDescriptor) {
+                .format    = vaapi_drm_format_map[i].layer_formats[p],
+                .nb_planes = 1,
+                .planes[0] = {
+                    .object_index = 0,
+                    .offset       = mapping->image.offsets[p],
+                    .pitch        = mapping->image.pitches[p],
+                },
+            };
+        }
+    } else {
+        mapping->drm_desc.layers[0].format =
+            vaapi_drm_format_map[i].layer_formats[0];
+        mapping->drm_desc.layers[0].nb_planes = mapping->image.num_planes;
+        for (p = 0; p < mapping->image.num_planes; p++) {
+            mapping->drm_desc.layers[0].planes[p] = (AVDRMPlaneDescriptor) {
+                .object_index = 0,
+                .offset       = mapping->image.offsets[p],
+                .pitch        = mapping->image.pitches[p],
+            };
+        }
+    }
+
+    vas = vaAcquireBufferHandle(hwctx->display, mapping->image.buf,
+                                &mapping->buffer_info);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(hwfc, AV_LOG_ERROR, "Failed to get buffer "
+               "handle from image %#x (derived from surface %#x): "
+               "%d (%s).\n", mapping->image.buf, surface_id,
+               vas, vaErrorStr(vas));
+        err = AVERROR(EIO);
+        goto fail_derived;
+    }
+
+    av_log(hwfc, AV_LOG_DEBUG, "DRM PRIME fd is %ld.\n",
+           mapping->buffer_info.handle);
+
+    mapping->drm_desc.nb_objects = 1;
+    mapping->drm_desc.objects[0] = (AVDRMObjectDescriptor) {
+        .fd   = mapping->buffer_info.handle,
+        .size = mapping->image.data_size,
+        // There is no way to get the format modifier with this API.
+        .format_modifier = DRM_FORMAT_MOD_INVALID,
+    };
+
+    err = ff_hwframe_map_create(src->hw_frames_ctx,
+                                dst, src, &vaapi_unmap_to_drm_abh,
+                                mapping);
+    if (err < 0)
+        goto fail_mapped;
+
+    dst->data[0] = (uint8_t*)&mapping->drm_desc;
+    dst->width   = src->width;
+    dst->height  = src->height;
+
+    return 0;
+
+fail_mapped:
+    vaReleaseBufferHandle(hwctx->display, mapping->image.buf);
+fail_derived:
+    vaDestroyImage(hwctx->display, mapping->image.image_id);
+fail:
+    av_freep(&mapping);
+    return err;
+}
+#endif
+
+static int vaapi_map_to_drm(AVHWFramesContext *hwfc, AVFrame *dst,
+                            const AVFrame *src, int flags)
+{
+#if VA_CHECK_VERSION(1, 1, 0)
+    int err;
+    err = vaapi_map_to_drm_esh(hwfc, dst, src, flags);
+    if (err != AVERROR(ENOSYS))
+        return err;
+#endif
+#if VA_CHECK_VERSION(0, 36, 0)
+    return vaapi_map_to_drm_abh(hwfc, dst, src, flags);
+#endif
+    return AVERROR(ENOSYS);
+}
+
+#endif /* CONFIG_LIBDRM */
+
+static int vaapi_map_to(AVHWFramesContext *hwfc, AVFrame *dst,
+                        const AVFrame *src, int flags)
+{
+    switch (src->format) {
+#if CONFIG_LIBDRM
+    case AV_PIX_FMT_DRM_PRIME:
+        return vaapi_map_from_drm(hwfc, dst, src, flags);
+#endif
+    default:
+        return AVERROR(ENOSYS);
+    }
+}
+
+static int vaapi_map_from(AVHWFramesContext *hwfc, AVFrame *dst,
+                          const AVFrame *src, int flags)
+{
+    switch (dst->format) {
+#if CONFIG_LIBDRM
+    case AV_PIX_FMT_DRM_PRIME:
+        return vaapi_map_to_drm(hwfc, dst, src, flags);
+#endif
+    default:
+        return vaapi_map_to_memory(hwfc, dst, src, flags);
+    }
+}
+
+static void vaapi_device_free(AVHWDeviceContext *ctx)
+{
+    AVVAAPIDeviceContext *hwctx = ctx->hwctx;
+    VAAPIDevicePriv      *priv  = ctx->user_opaque;
+
+    if (hwctx->display)
+        vaTerminate(hwctx->display);
+
+#if HAVE_VAAPI_X11
+    if (priv->x11_display)
+        XCloseDisplay(priv->x11_display);
+#endif
+
+    if (priv->drm_fd >= 0)
+        close(priv->drm_fd);
+
+    av_freep(&priv);
+}
+
+#if CONFIG_VAAPI_1
+static void vaapi_device_log_error(void *context, const char *message)
+{
+    AVHWDeviceContext *ctx = context;
+
+    av_log(ctx, AV_LOG_ERROR, "libva: %s", message);
+}
+
+static void vaapi_device_log_info(void *context, const char *message)
+{
+    AVHWDeviceContext *ctx = context;
+
+    av_log(ctx, AV_LOG_VERBOSE, "libva: %s", message);
+}
+#endif
+
+static int vaapi_device_connect(AVHWDeviceContext *ctx,
+                                VADisplay display)
+{
+    AVVAAPIDeviceContext *hwctx = ctx->hwctx;
+    int major, minor;
+    VAStatus vas;
+
+#if CONFIG_VAAPI_1
+    vaSetErrorCallback(display, &vaapi_device_log_error, ctx);
+    vaSetInfoCallback (display, &vaapi_device_log_info,  ctx);
+#endif
+
+    hwctx->display = display;
+
+    vas = vaInitialize(display, &major, &minor);
+    if (vas != VA_STATUS_SUCCESS) {
+        av_log(ctx, AV_LOG_ERROR, "Failed to initialise VAAPI "
+               "connection: %d (%s).\n", vas, vaErrorStr(vas));
+        return AVERROR(EIO);
+    }
+    av_log(ctx, AV_LOG_VERBOSE, "Initialised VAAPI connection: "
+           "version %d.%d\n", major, minor);
+
+    return 0;
+}
+
+static int vaapi_device_create(AVHWDeviceContext *ctx, const char *device,
+                               AVDictionary *opts, int flags)
+{
+    VAAPIDevicePriv *priv;
+    VADisplay display = NULL;
+    const AVDictionaryEntry *ent;
+    int try_drm, try_x11, try_all;
+
+    priv = av_mallocz(sizeof(*priv));
+    if (!priv)
+        return AVERROR(ENOMEM);
+
+    priv->drm_fd = -1;
+
+    ctx->user_opaque = priv;
+    ctx->free        = vaapi_device_free;
+
+    ent = av_dict_get(opts, "connection_type", NULL, 0);
+    if (ent) {
+        try_all = try_drm = try_x11 = 0;
+        if (!strcmp(ent->value, "drm")) {
+            try_drm = 1;
+        } else if (!strcmp(ent->value, "x11")) {
+            try_x11 = 1;
+        } else {
+            av_log(ctx, AV_LOG_ERROR, "Invalid connection type %s.\n",
+                   ent->value);
+            return AVERROR(EINVAL);
+        }
+    } else {
+        try_all = 1;
+        try_drm = HAVE_VAAPI_DRM;
+        try_x11 = HAVE_VAAPI_X11;
+    }
+
+#if HAVE_VAAPI_DRM
+    while (!display && try_drm) {
+        // If the device is specified, try to open it as a DRM device node.
+        // If not, look for a usable render node, possibly restricted to those
+        // using a specified kernel driver.
+        int loglevel = try_all ? AV_LOG_VERBOSE : AV_LOG_ERROR;
+        if (device) {
+            priv->drm_fd = open(device, O_RDWR);
+            if (priv->drm_fd < 0) {
+                av_log(ctx, loglevel, "Failed to open %s as "
+                       "DRM device node.\n", device);
+                break;
+            }
+        } else {
+            char path[64];
+            int n, max_devices = 8;
+#if CONFIG_LIBDRM
+            const AVDictionaryEntry *kernel_driver;
+            kernel_driver = av_dict_get(opts, "kernel_driver", NULL, 0);
+#endif
+            for (n = 0; n < max_devices; n++) {
+                snprintf(path, sizeof(path),
+                         "/dev/dri/renderD%d", 128 + n);
+                priv->drm_fd = open(path, O_RDWR);
+                if (priv->drm_fd < 0) {
+                    av_log(ctx, AV_LOG_VERBOSE, "Cannot open "
+                           "DRM render node for device %d.\n", n);
+                    break;
+                }
+#if CONFIG_LIBDRM
+                if (kernel_driver) {
+                    drmVersion *info;
+                    info = drmGetVersion(priv->drm_fd);
+                    if (strcmp(kernel_driver->value, info->name)) {
+                        av_log(ctx, AV_LOG_VERBOSE, "Ignoring device %d "
+                               "with non-matching kernel driver (%s).\n",
+                               n, info->name);
+                        drmFreeVersion(info);
+                        close(priv->drm_fd);
+                        priv->drm_fd = -1;
+                        continue;
+                    }
+                    av_log(ctx, AV_LOG_VERBOSE, "Trying to use "
+                           "DRM render node for device %d, "
+                           "with matching kernel driver (%s).\n",
+                           n, info->name);
+                    drmFreeVersion(info);
+                } else
+#endif
+                {
+                    av_log(ctx, AV_LOG_VERBOSE, "Trying to use "
+                           "DRM render node for device %d.\n", n);
+                }
+                break;
+            }
+            if (n >= max_devices)
+                break;
+        }
+
+        display = vaGetDisplayDRM(priv->drm_fd);
+        if (!display) {
+            av_log(ctx, AV_LOG_VERBOSE, "Cannot open a VA display "
+                   "from DRM device %s.\n", device);
+            return AVERROR_EXTERNAL;
+        }
+        break;
+    }
+#endif
+
+#if HAVE_VAAPI_X11
+    if (!display && try_x11) {
+        // Try to open the device as an X11 display.
+        priv->x11_display = XOpenDisplay(device);
+        if (!priv->x11_display) {
+            av_log(ctx, AV_LOG_VERBOSE, "Cannot open X11 display "
+                   "%s.\n", XDisplayName(device));
+        } else {
+            display = vaGetDisplay(priv->x11_display);
+            if (!display) {
+                av_log(ctx, AV_LOG_ERROR, "Cannot open a VA display "
+                       "from X11 display %s.\n", XDisplayName(device));
+                return AVERROR_UNKNOWN;
+            }
+
+            av_log(ctx, AV_LOG_VERBOSE, "Opened VA display via "
+                   "X11 display %s.\n", XDisplayName(device));
+        }
+    }
+#endif
+
+    if (!display) {
+        if (device)
+            av_log(ctx, AV_LOG_ERROR, "No VA display found for "
+                   "device %s.\n", device);
+        else
+            av_log(ctx, AV_LOG_ERROR, "No VA display found for "
+                   "any default device.\n");
+        return AVERROR(EINVAL);
+    }
+
+    ent = av_dict_get(opts, "driver", NULL, 0);
+    if (ent) {
+#if VA_CHECK_VERSION(0, 38, 0)
+        VAStatus vas;
+        vas = vaSetDriverName(display, ent->value);
+        if (vas != VA_STATUS_SUCCESS) {
+            av_log(ctx, AV_LOG_ERROR, "Failed to set driver name to "
+                   "%s: %d (%s).\n", ent->value, vas, vaErrorStr(vas));
+            vaTerminate(display);
+            return AVERROR_EXTERNAL;
+        }
+#else
+        av_log(ctx, AV_LOG_WARNING, "Driver name setting is not "
+               "supported with this VAAPI version.\n");
+#endif
+    }
+
+    return vaapi_device_connect(ctx, display);
+}
+
+static int vaapi_device_derive(AVHWDeviceContext *ctx,
+                               AVHWDeviceContext *src_ctx, int flags)
+{
+#if HAVE_VAAPI_DRM
+    if (src_ctx->type == AV_HWDEVICE_TYPE_DRM) {
+        AVDRMDeviceContext *src_hwctx = src_ctx->hwctx;
+        VADisplay *display;
+        VAAPIDevicePriv *priv;
+
+        if (src_hwctx->fd < 0) {
+            av_log(ctx, AV_LOG_ERROR, "DRM instance requires an associated "
+                   "device to derive a VA display from.\n");
+            return AVERROR(EINVAL);
+        }
+
+        priv = av_mallocz(sizeof(*priv));
+        if (!priv)
+            return AVERROR(ENOMEM);
+
+        // Inherits the fd from the source context, which will close it.
+        priv->drm_fd = -1;
+
+        ctx->user_opaque = priv;
+        ctx->free        = &vaapi_device_free;
+
+        display = vaGetDisplayDRM(src_hwctx->fd);
+        if (!display) {
+            av_log(ctx, AV_LOG_ERROR, "Failed to open a VA display from "
+                   "DRM device.\n");
+            return AVERROR(EIO);
+        }
+
+        return vaapi_device_connect(ctx, display);
+    }
+#endif
+    return AVERROR(ENOSYS);
+}
+
+const HWContextType ff_hwcontext_type_vaapi = {
+    .type                   = AV_HWDEVICE_TYPE_VAAPI,
+    .name                   = "VAAPI",
+
+    .device_hwctx_size      = sizeof(AVVAAPIDeviceContext),
+    .device_priv_size       = sizeof(VAAPIDeviceContext),
+    .device_hwconfig_size   = sizeof(AVVAAPIHWConfig),
+    .frames_hwctx_size      = sizeof(AVVAAPIFramesContext),
+    .frames_priv_size       = sizeof(VAAPIFramesContext),
+
+    .device_create          = &vaapi_device_create,
+    .device_derive          = &vaapi_device_derive,
+    .device_init            = &vaapi_device_init,
+    .device_uninit          = &vaapi_device_uninit,
+    .frames_get_constraints = &vaapi_frames_get_constraints,
+    .frames_init            = &vaapi_frames_init,
+    .frames_uninit          = &vaapi_frames_uninit,
+    .frames_get_buffer      = &vaapi_get_buffer,
+    .transfer_get_formats   = &vaapi_transfer_get_formats,
+    .transfer_data_to       = &vaapi_transfer_data_to,
+    .transfer_data_from     = &vaapi_transfer_data_from,
+    .map_to                 = &vaapi_map_to,
+    .map_from               = &vaapi_map_from,
+
+    .pix_fmts = (const enum AVPixelFormat[]) {
+        AV_PIX_FMT_VAAPI,
+        AV_PIX_FMT_NONE
+    },
+};
diff --git a/media/ffvpx/libavutil/hwcontext_vaapi.h b/media/ffvpx/libavutil/hwcontext_vaapi.h
new file mode 100644
index 0000000000..0b2e071cb3
--- /dev/null
+++ b/media/ffvpx/libavutil/hwcontext_vaapi.h
@@ -0,0 +1,117 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_HWCONTEXT_VAAPI_H
+#define AVUTIL_HWCONTEXT_VAAPI_H
+
+#include <va/va.h>
+
+/**
+ * @file
+ * API-specific header for AV_HWDEVICE_TYPE_VAAPI.
+ *
+ * Dynamic frame pools are supported, but note that any pool used as a render
+ * target is required to be of fixed size in order to be be usable as an
+ * argument to vaCreateContext().
+ *
+ * For user-allocated pools, AVHWFramesContext.pool must return AVBufferRefs
+ * with the data pointer set to a VASurfaceID.
+ */
+
+enum {
+    /**
+     * The quirks field has been set by the user and should not be detected
+     * automatically by av_hwdevice_ctx_init().
+     */
+    AV_VAAPI_DRIVER_QUIRK_USER_SET = (1 << 0),
+    /**
+     * The driver does not destroy parameter buffers when they are used by
+     * vaRenderPicture().  Additional code will be required to destroy them
+     * separately afterwards.
+     */
+    AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS = (1 << 1),
+
+    /**
+     * The driver does not support the VASurfaceAttribMemoryType attribute,
+     * so the surface allocation code will not try to use it.
+     */
+    AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE = (1 << 2),
+
+    /**
+     * The driver does not support surface attributes at all.
+     * The surface allocation code will never pass them to surface allocation,
+     * and the results of the vaQuerySurfaceAttributes() call will be faked.
+     */
+    AV_VAAPI_DRIVER_QUIRK_SURFACE_ATTRIBUTES = (1 << 3),
+};
+
+/**
+ * VAAPI connection details.
+ *
+ * Allocated as AVHWDeviceContext.hwctx
+ */
+typedef struct AVVAAPIDeviceContext {
+    /**
+     * The VADisplay handle, to be filled by the user.
+     */
+    VADisplay display;
+    /**
+     * Driver quirks to apply - this is filled by av_hwdevice_ctx_init(),
+     * with reference to a table of known drivers, unless the
+     * AV_VAAPI_DRIVER_QUIRK_USER_SET bit is already present.  The user
+     * may need to refer to this field when performing any later
+     * operations using VAAPI with the same VADisplay.
+     */
+    unsigned int driver_quirks;
+} AVVAAPIDeviceContext;
+
+/**
+ * VAAPI-specific data associated with a frame pool.
+ *
+ * Allocated as AVHWFramesContext.hwctx.
+ */
+typedef struct AVVAAPIFramesContext {
+    /**
+     * Set by the user to apply surface attributes to all surfaces in
+     * the frame pool.  If null, default settings are used.
+     */
+    VASurfaceAttrib *attributes;
+    int           nb_attributes;
+    /**
+     * The surfaces IDs of all surfaces in the pool after creation.
+     * Only valid if AVHWFramesContext.initial_pool_size was positive.
+     * These are intended to be used as the render_targets arguments to
+     * vaCreateContext().
+     */
+    VASurfaceID     *surface_ids;
+    int           nb_surfaces;
+} AVVAAPIFramesContext;
+
+/**
+ * VAAPI hardware pipeline configuration details.
+ *
+ * Allocated with av_hwdevice_hwconfig_alloc().
+ */
+typedef struct AVVAAPIHWConfig {
+    /**
+     * ID of a VAAPI pipeline configuration.
+     */
+    VAConfigID config_id;
+} AVVAAPIHWConfig;
+
+#endif /* AVUTIL_HWCONTEXT_VAAPI_H */
diff --git a/media/ffvpx/libavutil/imgutils.c b/media/ffvpx/libavutil/imgutils.c
new file mode 100644
index 0000000000..c733cb5cf5
--- /dev/null
+++ b/media/ffvpx/libavutil/imgutils.c
@@ -0,0 +1,645 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * misc image utilities
+ */
+
+#include "avassert.h"
+#include "common.h"
+#include "imgutils.h"
+#include "imgutils_internal.h"
+#include "internal.h"
+#include "intreadwrite.h"
+#include "log.h"
+#include "mathematics.h"
+#include "pixdesc.h"
+#include "rational.h"
+
+void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
+                                const AVPixFmtDescriptor *pixdesc)
+{
+    int i;
+    memset(max_pixsteps, 0, 4*sizeof(max_pixsteps[0]));
+    if (max_pixstep_comps)
+        memset(max_pixstep_comps, 0, 4*sizeof(max_pixstep_comps[0]));
+
+    for (i = 0; i < 4; i++) {
+        const AVComponentDescriptor *comp = &(pixdesc->comp[i]);
+        if (comp->step > max_pixsteps[comp->plane]) {
+            max_pixsteps[comp->plane] = comp->step;
+            if (max_pixstep_comps)
+                max_pixstep_comps[comp->plane] = i;
+        }
+    }
+}
+
+static inline
+int image_get_linesize(int width, int plane,
+                       int max_step, int max_step_comp,
+                       const AVPixFmtDescriptor *desc)
+{
+    int s, shifted_w, linesize;
+
+    if (!desc)
+        return AVERROR(EINVAL);
+
+    if (width < 0)
+        return AVERROR(EINVAL);
+    s = (max_step_comp == 1 || max_step_comp == 2) ? desc->log2_chroma_w : 0;
+    shifted_w = ((width + (1 << s) - 1)) >> s;
+    if (shifted_w && max_step > INT_MAX / shifted_w)
+        return AVERROR(EINVAL);
+    linesize = max_step * shifted_w;
+
+    if (desc->flags & AV_PIX_FMT_FLAG_BITSTREAM)
+        linesize = (linesize + 7) >> 3;
+    return linesize;
+}
+
+int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    int max_step     [4];       /* max pixel step for each plane */
+    int max_step_comp[4];       /* the component for each plane which has the max pixel step */
+
+    if (!desc || desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
+        return AVERROR(EINVAL);
+
+    av_image_fill_max_pixsteps(max_step, max_step_comp, desc);
+    return image_get_linesize(width, plane, max_step[plane], max_step_comp[plane], desc);
+}
+
+int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
+{
+    int i, ret;
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    int max_step     [4];       /* max pixel step for each plane */
+    int max_step_comp[4];       /* the component for each plane which has the max pixel step */
+
+    memset(linesizes, 0, 4*sizeof(linesizes[0]));
+
+    if (!desc || desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
+        return AVERROR(EINVAL);
+
+    av_image_fill_max_pixsteps(max_step, max_step_comp, desc);
+    for (i = 0; i < 4; i++) {
+        if ((ret = image_get_linesize(width, i, max_step[i], max_step_comp[i], desc)) < 0)
+            return ret;
+        linesizes[i] = ret;
+    }
+
+    return 0;
+}
+
+int av_image_fill_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt, int height,
+                           uint8_t *ptr, const int linesizes[4])
+{
+    int i, total_size, size[4] = { 0 }, has_plane[4] = { 0 };
+
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    memset(data     , 0, sizeof(data[0])*4);
+
+    if (!desc || desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
+        return AVERROR(EINVAL);
+
+    data[0] = ptr;
+    if (linesizes[0] > (INT_MAX - 1024) / height)
+        return AVERROR(EINVAL);
+    size[0] = linesizes[0] * height;
+
+    if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
+        desc->flags & FF_PSEUDOPAL) {
+        data[1] = ptr + size[0]; /* palette is stored here as 256 32 bits words */
+        return size[0] + 256 * 4;
+    }
+
+    for (i = 0; i < 4; i++)
+        has_plane[desc->comp[i].plane] = 1;
+
+    total_size = size[0];
+    for (i = 1; i < 4 && has_plane[i]; i++) {
+        int h, s = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
+        data[i] = data[i-1] + size[i-1];
+        h = (height + (1 << s) - 1) >> s;
+        if (linesizes[i] > INT_MAX / h)
+            return AVERROR(EINVAL);
+        size[i] = h * linesizes[i];
+        if (total_size > INT_MAX - size[i])
+            return AVERROR(EINVAL);
+        total_size += size[i];
+    }
+
+    return total_size;
+}
+
+int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
+{
+    int i;
+
+    for (i = 0; i < 256; i++) {
+        int r, g, b;
+
+        switch (pix_fmt) {
+        case AV_PIX_FMT_RGB8:
+            r = (i>>5    )*36;
+            g = ((i>>2)&7)*36;
+            b = (i&3     )*85;
+            break;
+        case AV_PIX_FMT_BGR8:
+            b = (i>>6    )*85;
+            g = ((i>>3)&7)*36;
+            r = (i&7     )*36;
+            break;
+        case AV_PIX_FMT_RGB4_BYTE:
+            r = (i>>3    )*255;
+            g = ((i>>1)&3)*85;
+            b = (i&1     )*255;
+            break;
+        case AV_PIX_FMT_BGR4_BYTE:
+            b = (i>>3    )*255;
+            g = ((i>>1)&3)*85;
+            r = (i&1     )*255;
+            break;
+        case AV_PIX_FMT_GRAY8:
+            r = b = g = i;
+            break;
+        default:
+            return AVERROR(EINVAL);
+        }
+        pal[i] = b + (g << 8) + (r << 16) + (0xFFU << 24);
+    }
+
+    return 0;
+}
+
+int av_image_alloc(uint8_t *pointers[4], int linesizes[4],
+                   int w, int h, enum AVPixelFormat pix_fmt, int align)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    int i, ret;
+    uint8_t *buf;
+
+    if (!desc)
+        return AVERROR(EINVAL);
+
+    if ((ret = av_image_check_size(w, h, 0, NULL)) < 0)
+        return ret;
+    if ((ret = av_image_fill_linesizes(linesizes, pix_fmt, align>7 ? FFALIGN(w, 8) : w)) < 0)
+        return ret;
+
+    for (i = 0; i < 4; i++)
+        linesizes[i] = FFALIGN(linesizes[i], align);
+
+    if ((ret = av_image_fill_pointers(pointers, pix_fmt, h, NULL, linesizes)) < 0)
+        return ret;
+    buf = av_malloc(ret + align);
+    if (!buf)
+        return AVERROR(ENOMEM);
+    if ((ret = av_image_fill_pointers(pointers, pix_fmt, h, buf, linesizes)) < 0) {
+        av_free(buf);
+        return ret;
+    }
+    if (desc->flags & AV_PIX_FMT_FLAG_PAL || (desc->flags & FF_PSEUDOPAL && pointers[1])) {
+        avpriv_set_systematic_pal2((uint32_t*)pointers[1], pix_fmt);
+        if (align < 4) {
+            av_log(NULL, AV_LOG_ERROR, "Formats with a palette require a minimum alignment of 4\n");
+            return AVERROR(EINVAL);
+        }
+    }
+
+    if ((desc->flags & AV_PIX_FMT_FLAG_PAL ||
+         desc->flags & FF_PSEUDOPAL) && pointers[1] &&
+        pointers[1] - pointers[0] > linesizes[0] * h) {
+        /* zero-initialize the padding before the palette */
+        memset(pointers[0] + linesizes[0] * h, 0,
+               pointers[1] - pointers[0] - linesizes[0] * h);
+    }
+
+    return ret;
+}
+
+typedef struct ImgUtils {
+    const AVClass *class;
+    int   log_offset;
+    void *log_ctx;
+} ImgUtils;
+
+static const AVClass imgutils_class = {
+    .class_name                = "IMGUTILS",
+    .item_name                 = av_default_item_name,
+    .option                    = NULL,
+    .version                   = LIBAVUTIL_VERSION_INT,
+    .log_level_offset_offset   = offsetof(ImgUtils, log_offset),
+    .parent_log_context_offset = offsetof(ImgUtils, log_ctx),
+};
+
+int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx)
+{
+    ImgUtils imgutils = {
+        .class      = &imgutils_class,
+        .log_offset = log_offset,
+        .log_ctx    = log_ctx,
+    };
+    int64_t stride = av_image_get_linesize(pix_fmt, w, 0);
+    if (stride <= 0)
+        stride = 8LL*w;
+    stride += 128*8;
+
+    if ((int)w<=0 || (int)h<=0 || stride >= INT_MAX || stride*(uint64_t)(h+128) >= INT_MAX) {
+        av_log(&imgutils, AV_LOG_ERROR, "Picture size %ux%u is invalid\n", w, h);
+        return AVERROR(EINVAL);
+    }
+
+    if (max_pixels < INT64_MAX) {
+        if (w*(int64_t)h > max_pixels) {
+            av_log(&imgutils, AV_LOG_ERROR,
+                    "Picture size %ux%u exceeds specified max pixel count %"PRId64", see the documentation if you wish to increase it\n",
+                    w, h, max_pixels);
+            return AVERROR(EINVAL);
+        }
+    }
+
+    return 0;
+}
+
+int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
+{
+    return av_image_check_size2(w, h, INT64_MAX, AV_PIX_FMT_NONE, log_offset, log_ctx);
+}
+
+int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
+{
+    int64_t scaled_dim;
+
+    if (sar.den <= 0 || sar.num < 0)
+        return AVERROR(EINVAL);
+
+    if (!sar.num || sar.num == sar.den)
+        return 0;
+
+    if (sar.num < sar.den)
+        scaled_dim = av_rescale_rnd(w, sar.num, sar.den, AV_ROUND_ZERO);
+    else
+        scaled_dim = av_rescale_rnd(h, sar.den, sar.num, AV_ROUND_ZERO);
+
+    if (scaled_dim > 0)
+        return 0;
+
+    return AVERROR(EINVAL);
+}
+
+static void image_copy_plane(uint8_t       *dst, ptrdiff_t dst_linesize,
+                             const uint8_t *src, ptrdiff_t src_linesize,
+                             ptrdiff_t bytewidth, int height)
+{
+    if (!dst || !src)
+        return;
+    av_assert0(FFABS(src_linesize) >= bytewidth);
+    av_assert0(FFABS(dst_linesize) >= bytewidth);
+    for (;height > 0; height--) {
+        memcpy(dst, src, bytewidth);
+        dst += dst_linesize;
+        src += src_linesize;
+    }
+}
+
+static void image_copy_plane_uc_from(uint8_t       *dst, ptrdiff_t dst_linesize,
+                                     const uint8_t *src, ptrdiff_t src_linesize,
+                                     ptrdiff_t bytewidth, int height)
+{
+    int ret = -1;
+
+#if ARCH_X86
+    ret = ff_image_copy_plane_uc_from_x86(dst, dst_linesize, src, src_linesize,
+                                          bytewidth, height);
+#endif
+
+    if (ret < 0)
+        image_copy_plane(dst, dst_linesize, src, src_linesize, bytewidth, height);
+}
+
+void av_image_copy_plane(uint8_t       *dst, int dst_linesize,
+                         const uint8_t *src, int src_linesize,
+                         int bytewidth, int height)
+{
+    image_copy_plane(dst, dst_linesize, src, src_linesize, bytewidth, height);
+}
+
+static void image_copy(uint8_t *dst_data[4], const ptrdiff_t dst_linesizes[4],
+                       const uint8_t *src_data[4], const ptrdiff_t src_linesizes[4],
+                       enum AVPixelFormat pix_fmt, int width, int height,
+                       void (*copy_plane)(uint8_t *, ptrdiff_t, const uint8_t *,
+                                          ptrdiff_t, ptrdiff_t, int))
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+
+    if (!desc || desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
+        return;
+
+    if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
+        desc->flags & FF_PSEUDOPAL) {
+        copy_plane(dst_data[0], dst_linesizes[0],
+                   src_data[0], src_linesizes[0],
+                   width, height);
+        /* copy the palette */
+        if ((desc->flags & AV_PIX_FMT_FLAG_PAL) || (dst_data[1] && src_data[1]))
+            memcpy(dst_data[1], src_data[1], 4*256);
+    } else {
+        int i, planes_nb = 0;
+
+        for (i = 0; i < desc->nb_components; i++)
+            planes_nb = FFMAX(planes_nb, desc->comp[i].plane + 1);
+
+        for (i = 0; i < planes_nb; i++) {
+            int h = height;
+            ptrdiff_t bwidth = av_image_get_linesize(pix_fmt, width, i);
+            if (bwidth < 0) {
+                av_log(NULL, AV_LOG_ERROR, "av_image_get_linesize failed\n");
+                return;
+            }
+            if (i == 1 || i == 2) {
+                h = AV_CEIL_RSHIFT(height, desc->log2_chroma_h);
+            }
+            copy_plane(dst_data[i], dst_linesizes[i],
+                       src_data[i], src_linesizes[i],
+                       bwidth, h);
+        }
+    }
+}
+
+void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
+                   const uint8_t *src_data[4], const int src_linesizes[4],
+                   enum AVPixelFormat pix_fmt, int width, int height)
+{
+    ptrdiff_t dst_linesizes1[4], src_linesizes1[4];
+    int i;
+
+    for (i = 0; i < 4; i++) {
+        dst_linesizes1[i] = dst_linesizes[i];
+        src_linesizes1[i] = src_linesizes[i];
+    }
+
+    image_copy(dst_data, dst_linesizes1, src_data, src_linesizes1, pix_fmt,
+               width, height, image_copy_plane);
+}
+
+void av_image_copy_uc_from(uint8_t *dst_data[4], const ptrdiff_t dst_linesizes[4],
+                           const uint8_t *src_data[4], const ptrdiff_t src_linesizes[4],
+                           enum AVPixelFormat pix_fmt, int width, int height)
+{
+    image_copy(dst_data, dst_linesizes, src_data, src_linesizes, pix_fmt,
+               width, height, image_copy_plane_uc_from);
+}
+
+int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4],
+                         const uint8_t *src, enum AVPixelFormat pix_fmt,
+                         int width, int height, int align)
+{
+    int ret, i;
+
+    ret = av_image_check_size(width, height, 0, NULL);
+    if (ret < 0)
+        return ret;
+
+    ret = av_image_fill_linesizes(dst_linesize, pix_fmt, width);
+    if (ret < 0)
+        return ret;
+
+    for (i = 0; i < 4; i++)
+        dst_linesize[i] = FFALIGN(dst_linesize[i], align);
+
+    return av_image_fill_pointers(dst_data, pix_fmt, height, (uint8_t *)src, dst_linesize);
+}
+
+int av_image_get_buffer_size(enum AVPixelFormat pix_fmt,
+                             int width, int height, int align)
+{
+    uint8_t *data[4];
+    int linesize[4];
+    int ret;
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    if (!desc)
+        return AVERROR(EINVAL);
+
+    ret = av_image_check_size(width, height, 0, NULL);
+    if (ret < 0)
+        return ret;
+
+    // do not include palette for these pseudo-paletted formats
+    if (desc->flags & FF_PSEUDOPAL)
+        return FFALIGN(width, align) * height;
+
+    return av_image_fill_arrays(data, linesize, NULL, pix_fmt,
+                                width, height, align);
+}
+
+int av_image_copy_to_buffer(uint8_t *dst, int dst_size,
+                            const uint8_t * const src_data[4],
+                            const int src_linesize[4],
+                            enum AVPixelFormat pix_fmt,
+                            int width, int height, int align)
+{
+    int i, j, nb_planes = 0, linesize[4];
+    int size = av_image_get_buffer_size(pix_fmt, width, height, align);
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    int ret;
+
+    if (size > dst_size || size < 0 || !desc)
+        return AVERROR(EINVAL);
+
+    for (i = 0; i < desc->nb_components; i++)
+        nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
+
+    nb_planes++;
+
+    ret = av_image_fill_linesizes(linesize, pix_fmt, width);
+    av_assert0(ret >= 0); // was checked previously
+
+    for (i = 0; i < nb_planes; i++) {
+        int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
+        const uint8_t *src = src_data[i];
+        h = (height + (1 << shift) - 1) >> shift;
+
+        for (j = 0; j < h; j++) {
+            memcpy(dst, src, linesize[i]);
+            dst += FFALIGN(linesize[i], align);
+            src += src_linesize[i];
+        }
+    }
+
+    if (desc->flags & AV_PIX_FMT_FLAG_PAL) {
+        uint32_t *d32 = (uint32_t *)dst;
+
+        for (i = 0; i<256; i++)
+            AV_WL32(d32 + i, AV_RN32(src_data[1] + 4*i));
+    }
+
+    return size;
+}
+
+// Fill dst[0..dst_size] with the bytes in clear[0..clear_size]. The clear
+// bytes are repeated until dst_size is reached. If dst_size is unaligned (i.e.
+// dst_size%clear_size!=0), the remaining data will be filled with the beginning
+// of the clear data only.
+static void memset_bytes(uint8_t *dst, size_t dst_size, uint8_t *clear,
+                         size_t clear_size)
+{
+    int same = 1;
+    int i;
+
+    if (!clear_size)
+        return;
+
+    // Reduce to memset() if possible.
+    for (i = 0; i < clear_size; i++) {
+        if (clear[i] != clear[0]) {
+            same = 0;
+            break;
+        }
+    }
+    if (same)
+        clear_size = 1;
+
+    if (clear_size == 1) {
+        memset(dst, clear[0], dst_size);
+        dst_size = 0;
+    } else {
+        if (clear_size > dst_size)
+            clear_size = dst_size;
+        memcpy(dst, clear, clear_size);
+        av_memcpy_backptr(dst + clear_size, clear_size, dst_size - clear_size);
+    }
+}
+
+// Maximum size in bytes of a plane element (usually a pixel, or multiple pixels
+// if it's a subsampled packed format).
+#define MAX_BLOCK_SIZE 32
+
+int av_image_fill_black(uint8_t *dst_data[4], const ptrdiff_t dst_linesize[4],
+                        enum AVPixelFormat pix_fmt, enum AVColorRange range,
+                        int width, int height)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    int nb_planes = av_pix_fmt_count_planes(pix_fmt);
+    // A pixel or a group of pixels on each plane, with a value that represents black.
+    // Consider e.g. AV_PIX_FMT_UYVY422 for non-trivial cases.
+    uint8_t clear_block[4][MAX_BLOCK_SIZE] = {{0}}; // clear padding with 0
+    int clear_block_size[4] = {0};
+    ptrdiff_t plane_line_bytes[4] = {0};
+    int rgb, limited;
+    int plane, c;
+
+    if (!desc || nb_planes < 1 || nb_planes > 4 || desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
+        return AVERROR(EINVAL);
+
+    rgb = !!(desc->flags & AV_PIX_FMT_FLAG_RGB);
+    limited = !rgb && range != AVCOL_RANGE_JPEG;
+
+    if (desc->flags & AV_PIX_FMT_FLAG_BITSTREAM) {
+        ptrdiff_t bytewidth = av_image_get_linesize(pix_fmt, width, 0);
+        uint8_t *data;
+        int mono = pix_fmt == AV_PIX_FMT_MONOWHITE || pix_fmt == AV_PIX_FMT_MONOBLACK;
+        int fill = pix_fmt == AV_PIX_FMT_MONOWHITE ? 0xFF : 0;
+        if (nb_planes != 1 || !(rgb || mono) || bytewidth < 1)
+            return AVERROR(EINVAL);
+
+        if (!dst_data)
+            return 0;
+
+        data = dst_data[0];
+
+        // (Bitstream + alpha will be handled incorrectly - it'll remain transparent.)
+        for (;height > 0; height--) {
+            memset(data, fill, bytewidth);
+            data += dst_linesize[0];
+        }
+        return 0;
+    }
+
+    for (c = 0; c < desc->nb_components; c++) {
+        const AVComponentDescriptor comp = desc->comp[c];
+
+        // We try to operate on entire non-subsampled pixel groups (for
+        // AV_PIX_FMT_UYVY422 this would mean two consecutive pixels).
+        clear_block_size[comp.plane] = FFMAX(clear_block_size[comp.plane], comp.step);
+
+        if (clear_block_size[comp.plane] > MAX_BLOCK_SIZE)
+            return AVERROR(EINVAL);
+    }
+
+    // Create a byte array for clearing 1 pixel (sometimes several pixels).
+    for (c = 0; c < desc->nb_components; c++) {
+        const AVComponentDescriptor comp = desc->comp[c];
+        // (Multiple pixels happen e.g. with AV_PIX_FMT_UYVY422.)
+        int w = clear_block_size[comp.plane] / comp.step;
+        uint8_t *c_data[4];
+        const int c_linesize[4] = {0};
+        uint16_t src_array[MAX_BLOCK_SIZE];
+        uint16_t src = 0;
+        int x;
+
+        if (comp.depth > 16)
+            return AVERROR(EINVAL);
+        if (!rgb && comp.depth < 8)
+            return AVERROR(EINVAL);
+        if (w < 1)
+            return AVERROR(EINVAL);
+
+        if (c == 0 && limited) {
+            src = 16 << (comp.depth - 8);
+        } else if ((c == 1 || c == 2) && !rgb) {
+            src = 128 << (comp.depth - 8);
+        } else if (c == 3) {
+            // (Assume even limited YUV uses full range alpha.)
+            src = (1 << comp.depth) - 1;
+        }
+
+        for (x = 0; x < w; x++)
+            src_array[x] = src;
+
+        for (x = 0; x < 4; x++)
+            c_data[x] = &clear_block[x][0];
+
+        av_write_image_line(src_array, c_data, c_linesize, desc, 0, 0, c, w);
+    }
+
+    for (plane = 0; plane < nb_planes; plane++) {
+        plane_line_bytes[plane] = av_image_get_linesize(pix_fmt, width, plane);
+        if (plane_line_bytes[plane] < 0)
+            return AVERROR(EINVAL);
+    }
+
+    if (!dst_data)
+        return 0;
+
+    for (plane = 0; plane < nb_planes; plane++) {
+        size_t bytewidth = plane_line_bytes[plane];
+        uint8_t *data = dst_data[plane];
+        int chroma_div = plane == 1 || plane == 2 ? desc->log2_chroma_h : 0;
+        int plane_h = ((height + ( 1 << chroma_div) - 1)) >> chroma_div;
+
+        for (; plane_h > 0; plane_h--) {
+            memset_bytes(data, bytewidth, &clear_block[plane][0], clear_block_size[plane]);
+            data += dst_linesize[plane];
+        }
+    }
+
+    return 0;
+}
diff --git a/media/ffvpx/libavutil/imgutils.h b/media/ffvpx/libavutil/imgutils.h
new file mode 100644
index 0000000000..5b790ecf0a
--- /dev/null
+++ b/media/ffvpx/libavutil/imgutils.h
@@ -0,0 +1,277 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_IMGUTILS_H
+#define AVUTIL_IMGUTILS_H
+
+/**
+ * @file
+ * misc image utilities
+ *
+ * @addtogroup lavu_picture
+ * @{
+ */
+
+#include "avutil.h"
+#include "pixdesc.h"
+#include "rational.h"
+
+/**
+ * Compute the max pixel step for each plane of an image with a
+ * format described by pixdesc.
+ *
+ * The pixel step is the distance in bytes between the first byte of
+ * the group of bytes which describe a pixel component and the first
+ * byte of the successive group in the same plane for the same
+ * component.
+ *
+ * @param max_pixsteps an array which is filled with the max pixel step
+ * for each plane. Since a plane may contain different pixel
+ * components, the computed max_pixsteps[plane] is relative to the
+ * component in the plane with the max pixel step.
+ * @param max_pixstep_comps an array which is filled with the component
+ * for each plane which has the max pixel step. May be NULL.
+ */
+void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
+                                const AVPixFmtDescriptor *pixdesc);
+
+/**
+ * Compute the size of an image line with format pix_fmt and width
+ * width for the plane plane.
+ *
+ * @return the computed size in bytes
+ */
+int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane);
+
+/**
+ * Fill plane linesizes for an image with pixel format pix_fmt and
+ * width width.
+ *
+ * @param linesizes array to be filled with the linesize for each plane
+ * @return >= 0 in case of success, a negative error code otherwise
+ */
+int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width);
+
+/**
+ * Fill plane data pointers for an image with pixel format pix_fmt and
+ * height height.
+ *
+ * @param data pointers array to be filled with the pointer for each image plane
+ * @param ptr the pointer to a buffer which will contain the image
+ * @param linesizes the array containing the linesize for each
+ * plane, should be filled by av_image_fill_linesizes()
+ * @return the size in bytes required for the image buffer, a negative
+ * error code in case of failure
+ */
+int av_image_fill_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt, int height,
+                           uint8_t *ptr, const int linesizes[4]);
+
+/**
+ * Allocate an image with size w and h and pixel format pix_fmt, and
+ * fill pointers and linesizes accordingly.
+ * The allocated image buffer has to be freed by using
+ * av_freep(&pointers[0]).
+ *
+ * @param align the value to use for buffer size alignment
+ * @return the size in bytes required for the image buffer, a negative
+ * error code in case of failure
+ */
+int av_image_alloc(uint8_t *pointers[4], int linesizes[4],
+                   int w, int h, enum AVPixelFormat pix_fmt, int align);
+
+/**
+ * Copy image plane from src to dst.
+ * That is, copy "height" number of lines of "bytewidth" bytes each.
+ * The first byte of each successive line is separated by *_linesize
+ * bytes.
+ *
+ * bytewidth must be contained by both absolute values of dst_linesize
+ * and src_linesize, otherwise the function behavior is undefined.
+ *
+ * @param dst_linesize linesize for the image plane in dst
+ * @param src_linesize linesize for the image plane in src
+ */
+void av_image_copy_plane(uint8_t       *dst, int dst_linesize,
+                         const uint8_t *src, int src_linesize,
+                         int bytewidth, int height);
+
+/**
+ * Copy image in src_data to dst_data.
+ *
+ * @param dst_linesizes linesizes for the image in dst_data
+ * @param src_linesizes linesizes for the image in src_data
+ */
+void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
+                   const uint8_t *src_data[4], const int src_linesizes[4],
+                   enum AVPixelFormat pix_fmt, int width, int height);
+
+/**
+ * Copy image data located in uncacheable (e.g. GPU mapped) memory. Where
+ * available, this function will use special functionality for reading from such
+ * memory, which may result in greatly improved performance compared to plain
+ * av_image_copy().
+ *
+ * The data pointers and the linesizes must be aligned to the maximum required
+ * by the CPU architecture.
+ *
+ * @note The linesize parameters have the type ptrdiff_t here, while they are
+ *       int for av_image_copy().
+ * @note On x86, the linesizes currently need to be aligned to the cacheline
+ *       size (i.e. 64) to get improved performance.
+ */
+void av_image_copy_uc_from(uint8_t *dst_data[4],       const ptrdiff_t dst_linesizes[4],
+                           const uint8_t *src_data[4], const ptrdiff_t src_linesizes[4],
+                           enum AVPixelFormat pix_fmt, int width, int height);
+
+/**
+ * Setup the data pointers and linesizes based on the specified image
+ * parameters and the provided array.
+ *
+ * The fields of the given image are filled in by using the src
+ * address which points to the image data buffer. Depending on the
+ * specified pixel format, one or multiple image data pointers and
+ * line sizes will be set.  If a planar format is specified, several
+ * pointers will be set pointing to the different picture planes and
+ * the line sizes of the different planes will be stored in the
+ * lines_sizes array. Call with src == NULL to get the required
+ * size for the src buffer.
+ *
+ * To allocate the buffer and fill in the dst_data and dst_linesize in
+ * one call, use av_image_alloc().
+ *
+ * @param dst_data      data pointers to be filled in
+ * @param dst_linesize  linesizes for the image in dst_data to be filled in
+ * @param src           buffer which will contain or contains the actual image data, can be NULL
+ * @param pix_fmt       the pixel format of the image
+ * @param width         the width of the image in pixels
+ * @param height        the height of the image in pixels
+ * @param align         the value used in src for linesize alignment
+ * @return the size in bytes required for src, a negative error code
+ * in case of failure
+ */
+int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4],
+                         const uint8_t *src,
+                         enum AVPixelFormat pix_fmt, int width, int height, int align);
+
+/**
+ * Return the size in bytes of the amount of data required to store an
+ * image with the given parameters.
+ *
+ * @param pix_fmt  the pixel format of the image
+ * @param width    the width of the image in pixels
+ * @param height   the height of the image in pixels
+ * @param align    the assumed linesize alignment
+ * @return the buffer size in bytes, a negative error code in case of failure
+ */
+int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align);
+
+/**
+ * Copy image data from an image into a buffer.
+ *
+ * av_image_get_buffer_size() can be used to compute the required size
+ * for the buffer to fill.
+ *
+ * @param dst           a buffer into which picture data will be copied
+ * @param dst_size      the size in bytes of dst
+ * @param src_data      pointers containing the source image data
+ * @param src_linesize  linesizes for the image in src_data
+ * @param pix_fmt       the pixel format of the source image
+ * @param width         the width of the source image in pixels
+ * @param height        the height of the source image in pixels
+ * @param align         the assumed linesize alignment for dst
+ * @return the number of bytes written to dst, or a negative value
+ * (error code) on error
+ */
+int av_image_copy_to_buffer(uint8_t *dst, int dst_size,
+                            const uint8_t * const src_data[4], const int src_linesize[4],
+                            enum AVPixelFormat pix_fmt, int width, int height, int align);
+
+/**
+ * Check if the given dimension of an image is valid, meaning that all
+ * bytes of the image can be addressed with a signed int.
+ *
+ * @param w the width of the picture
+ * @param h the height of the picture
+ * @param log_offset the offset to sum to the log level for logging with log_ctx
+ * @param log_ctx the parent logging context, it may be NULL
+ * @return >= 0 if valid, a negative error code otherwise
+ */
+int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx);
+
+/**
+ * Check if the given dimension of an image is valid, meaning that all
+ * bytes of a plane of an image with the specified pix_fmt can be addressed
+ * with a signed int.
+ *
+ * @param w the width of the picture
+ * @param h the height of the picture
+ * @param max_pixels the maximum number of pixels the user wants to accept
+ * @param pix_fmt the pixel format, can be AV_PIX_FMT_NONE if unknown.
+ * @param log_offset the offset to sum to the log level for logging with log_ctx
+ * @param log_ctx the parent logging context, it may be NULL
+ * @return >= 0 if valid, a negative error code otherwise
+ */
+int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx);
+
+/**
+ * Check if the given sample aspect ratio of an image is valid.
+ *
+ * It is considered invalid if the denominator is 0 or if applying the ratio
+ * to the image size would make the smaller dimension less than 1. If the
+ * sar numerator is 0, it is considered unknown and will return as valid.
+ *
+ * @param w width of the image
+ * @param h height of the image
+ * @param sar sample aspect ratio of the image
+ * @return 0 if valid, a negative AVERROR code otherwise
+ */
+int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar);
+
+/**
+ * Overwrite the image data with black. This is suitable for filling a
+ * sub-rectangle of an image, meaning the padding between the right most pixel
+ * and the left most pixel on the next line will not be overwritten. For some
+ * formats, the image size might be rounded up due to inherent alignment.
+ *
+ * If the pixel format has alpha, the alpha is cleared to opaque.
+ *
+ * This can return an error if the pixel format is not supported. Normally, all
+ * non-hwaccel pixel formats should be supported.
+ *
+ * Passing NULL for dst_data is allowed. Then the function returns whether the
+ * operation would have succeeded. (It can return an error if the pix_fmt is
+ * not supported.)
+ *
+ * @param dst_data      data pointers to destination image
+ * @param dst_linesize  linesizes for the destination image
+ * @param pix_fmt       the pixel format of the image
+ * @param range         the color range of the image (important for colorspaces such as YUV)
+ * @param width         the width of the image in pixels
+ * @param height        the height of the image in pixels
+ * @return 0 if the image data was cleared, a negative AVERROR code otherwise
+ */
+int av_image_fill_black(uint8_t *dst_data[4], const ptrdiff_t dst_linesize[4],
+                        enum AVPixelFormat pix_fmt, enum AVColorRange range,
+                        int width, int height);
+
+/**
+ * @}
+ */
+
+
+#endif /* AVUTIL_IMGUTILS_H */
diff --git a/media/ffvpx/libavutil/imgutils_internal.h b/media/ffvpx/libavutil/imgutils_internal.h
new file mode 100644
index 0000000000..d515858413
--- /dev/null
+++ b/media/ffvpx/libavutil/imgutils_internal.h
@@ -0,0 +1,30 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_IMGUTILS_INTERNAL_H
+#define AVUTIL_IMGUTILS_INTERNAL_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+int ff_image_copy_plane_uc_from_x86(uint8_t       *dst, ptrdiff_t dst_linesize,
+                                    const uint8_t *src, ptrdiff_t src_linesize,
+                                    ptrdiff_t bytewidth, int height);
+
+
+#endif /* AVUTIL_IMGUTILS_INTERNAL_H */
diff --git a/media/ffvpx/libavutil/integer.c b/media/ffvpx/libavutil/integer.c
new file mode 100644
index 0000000000..78e252fbde
--- /dev/null
+++ b/media/ffvpx/libavutil/integer.c
@@ -0,0 +1,166 @@
+/*
+ * arbitrary precision integers
+ * Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * arbitrary precision integers
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#include "common.h"
+#include "integer.h"
+#include "avassert.h"
+
+static const AVInteger zero_i;
+
+AVInteger av_add_i(AVInteger a, AVInteger b){
+    int i, carry=0;
+
+    for(i=0; i<AV_INTEGER_SIZE; i++){
+        carry= (carry>>16) + a.v[i] + b.v[i];
+        a.v[i]= carry;
+    }
+    return a;
+}
+
+AVInteger av_sub_i(AVInteger a, AVInteger b){
+    int i, carry=0;
+
+    for(i=0; i<AV_INTEGER_SIZE; i++){
+        carry= (carry>>16) + a.v[i] - b.v[i];
+        a.v[i]= carry;
+    }
+    return a;
+}
+
+int av_log2_i(AVInteger a){
+    int i;
+
+    for(i=AV_INTEGER_SIZE-1; i>=0; i--){
+        if(a.v[i])
+            return av_log2_16bit(a.v[i]) + 16*i;
+    }
+    return -1;
+}
+
+AVInteger av_mul_i(AVInteger a, AVInteger b){
+    AVInteger out;
+    int i, j;
+    int na= (av_log2_i(a)+16) >> 4;
+    int nb= (av_log2_i(b)+16) >> 4;
+
+    memset(&out, 0, sizeof(out));
+
+    for(i=0; i<na; i++){
+        unsigned int carry=0;
+
+        if(a.v[i])
+            for(j=i; j<AV_INTEGER_SIZE && j-i<=nb; j++){
+                carry= (carry>>16) + out.v[j] + a.v[i]*(unsigned)b.v[j-i];
+                out.v[j]= carry;
+            }
+    }
+
+    return out;
+}
+
+int av_cmp_i(AVInteger a, AVInteger b){
+    int i;
+    int v= (int16_t)a.v[AV_INTEGER_SIZE-1] - (int16_t)b.v[AV_INTEGER_SIZE-1];
+    if(v) return (v>>16)|1;
+
+    for(i=AV_INTEGER_SIZE-2; i>=0; i--){
+        int v= a.v[i] - b.v[i];
+        if(v) return (v>>16)|1;
+    }
+    return 0;
+}
+
+AVInteger av_shr_i(AVInteger a, int s){
+    AVInteger out;
+    int i;
+
+    for(i=0; i<AV_INTEGER_SIZE; i++){
+        unsigned int index= i + (s>>4);
+        unsigned int v=0;
+        if(index+1<AV_INTEGER_SIZE) v = a.v[index+1]<<16;
+        if(index  <AV_INTEGER_SIZE) v+= a.v[index  ];
+        out.v[i]= v >> (s&15);
+    }
+    return out;
+}
+
+AVInteger av_mod_i(AVInteger *quot, AVInteger a, AVInteger b){
+    int i= av_log2_i(a) - av_log2_i(b);
+    AVInteger quot_temp;
+    if(!quot) quot = &quot_temp;
+
+    if ((int16_t)a.v[AV_INTEGER_SIZE-1] < 0) {
+        a = av_mod_i(quot, av_sub_i(zero_i, a), b);
+        *quot = av_sub_i(zero_i, *quot);
+        return av_sub_i(zero_i, a);
+    }
+
+    av_assert2((int16_t)a.v[AV_INTEGER_SIZE-1] >= 0 && (int16_t)b.v[AV_INTEGER_SIZE-1] >= 0);
+    av_assert2(av_log2_i(b)>=0);
+
+    if(i > 0)
+        b= av_shr_i(b, -i);
+
+    memset(quot, 0, sizeof(AVInteger));
+
+    while(i-- >= 0){
+        *quot= av_shr_i(*quot, -1);
+        if(av_cmp_i(a, b) >= 0){
+            a= av_sub_i(a, b);
+            quot->v[0] += 1;
+        }
+        b= av_shr_i(b, 1);
+    }
+    return a;
+}
+
+AVInteger av_div_i(AVInteger a, AVInteger b){
+    AVInteger quot;
+    av_mod_i(&quot, a, b);
+    return quot;
+}
+
+AVInteger av_int2i(int64_t a){
+    AVInteger out;
+    int i;
+
+    for(i=0; i<AV_INTEGER_SIZE; i++){
+        out.v[i]= a;
+        a>>=16;
+    }
+    return out;
+}
+
+int64_t av_i2int(AVInteger a){
+    int i;
+    int64_t out=(int8_t)a.v[AV_INTEGER_SIZE-1];
+
+    for(i= AV_INTEGER_SIZE-2; i>=0; i--){
+        out = (out<<16) + a.v[i];
+    }
+    return out;
+}
diff --git a/media/ffvpx/libavutil/integer.h b/media/ffvpx/libavutil/integer.h
new file mode 100644
index 0000000000..45f733c04c
--- /dev/null
+++ b/media/ffvpx/libavutil/integer.h
@@ -0,0 +1,86 @@
+/*
+ * arbitrary precision integers
+ * Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * arbitrary precision integers
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#ifndef AVUTIL_INTEGER_H
+#define AVUTIL_INTEGER_H
+
+#include <stdint.h>
+#include "common.h"
+
+#define AV_INTEGER_SIZE 8
+
+typedef struct AVInteger{
+    uint16_t v[AV_INTEGER_SIZE];
+} AVInteger;
+
+AVInteger av_add_i(AVInteger a, AVInteger b) av_const;
+AVInteger av_sub_i(AVInteger a, AVInteger b) av_const;
+
+/**
+ * Return the rounded-down value of the base 2 logarithm of the given
+ * AVInteger. This is simply the index of the most significant bit
+ * which is 1, or 0 if all bits are 0.
+ */
+int av_log2_i(AVInteger a) av_const;
+AVInteger av_mul_i(AVInteger a, AVInteger b) av_const;
+
+/**
+ * Return 0 if a==b, 1 if a>b and -1 if a<b.
+ */
+int av_cmp_i(AVInteger a, AVInteger b) av_const;
+
+/**
+ * bitwise shift
+ * @param s the number of bits by which the value should be shifted right,
+            may be negative for shifting left
+ */
+AVInteger av_shr_i(AVInteger a, int s) av_const;
+
+/**
+ * Return a % b.
+ * @param quot a/b will be stored here.
+ */
+AVInteger av_mod_i(AVInteger *quot, AVInteger a, AVInteger b);
+
+/**
+ * Return a/b.
+ */
+AVInteger av_div_i(AVInteger a, AVInteger b) av_const;
+
+/**
+ * Convert the given int64_t to an AVInteger.
+ */
+AVInteger av_int2i(int64_t a) av_const;
+
+/**
+ * Convert the given AVInteger to an int64_t.
+ * If the AVInteger is too large to fit into an int64_t,
+ * then only the least significant 64 bits will be used.
+ */
+int64_t av_i2int(AVInteger a) av_const;
+
+#endif /* AVUTIL_INTEGER_H */
diff --git a/media/ffvpx/libavutil/internal.h b/media/ffvpx/libavutil/internal.h
new file mode 100644
index 0000000000..4acbcf56cb
--- /dev/null
+++ b/media/ffvpx/libavutil/internal.h
@@ -0,0 +1,372 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * common internal API header
+ */
+
+#ifndef AVUTIL_INTERNAL_H
+#define AVUTIL_INTERNAL_H
+
+#if !defined(DEBUG) && !defined(NDEBUG)
+#    define NDEBUG
+#endif
+
+// This can be enabled to allow detection of additional integer overflows with ubsan
+//#define CHECKED
+
+#include <limits.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <assert.h>
+#include "config.h"
+#include "attributes.h"
+#include "timer.h"
+#include "cpu.h"
+#include "dict.h"
+#include "macros.h"
+#include "mem.h"
+#include "pixfmt.h"
+#include "version.h"
+
+#if ARCH_X86
+#   include "x86/emms.h"
+#endif
+
+#ifndef emms_c
+#   define emms_c() do {} while(0)
+#endif
+
+#ifndef attribute_align_arg
+#if ARCH_X86_32 && AV_GCC_VERSION_AT_LEAST(4,2)
+#    define attribute_align_arg __attribute__((force_align_arg_pointer))
+#else
+#    define attribute_align_arg
+#endif
+#endif
+
+#if defined(_WIN32) && CONFIG_SHARED && !defined(BUILDING_avutil)
+#    define av_export_avutil __declspec(dllimport)
+#else
+#    define av_export_avutil
+#endif
+
+#if HAVE_PRAGMA_DEPRECATED
+#    if defined(__ICL) || defined (__INTEL_COMPILER)
+#        define FF_DISABLE_DEPRECATION_WARNINGS __pragma(warning(push)) __pragma(warning(disable:1478))
+#        define FF_ENABLE_DEPRECATION_WARNINGS  __pragma(warning(pop))
+#    elif defined(_MSC_VER)
+#        define FF_DISABLE_DEPRECATION_WARNINGS __pragma(warning(push)) __pragma(warning(disable:4996))
+#        define FF_ENABLE_DEPRECATION_WARNINGS  __pragma(warning(pop))
+#    else
+#        define FF_DISABLE_DEPRECATION_WARNINGS _Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
+#        define FF_ENABLE_DEPRECATION_WARNINGS  _Pragma("GCC diagnostic pop")
+#    endif
+#else
+#    define FF_DISABLE_DEPRECATION_WARNINGS
+#    define FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
+
+#define FF_MEMORY_POISON 0x2a
+
+#define MAKE_ACCESSORS(str, name, type, field) \
+    type av_##name##_get_##field(const str *s) { return s->field; } \
+    void av_##name##_set_##field(str *s, type v) { s->field = v; }
+
+// Some broken preprocessors need a second expansion
+// to be forced to tokenize __VA_ARGS__
+#define E1(x) x
+
+/* Check if the hard coded offset of a struct member still matches reality.
+ * Induce a compilation failure if not.
+ */
+#define AV_CHECK_OFFSET(s, m, o) struct check_##o {    \
+        int x_##o[offsetof(s, m) == o? 1: -1];         \
+    }
+
+#define LOCAL_ALIGNED_A(a, t, v, s, o, ...)             \
+    uint8_t la_##v[sizeof(t s o) + (a)];                \
+    t (*v) o = (void *)FFALIGN((uintptr_t)la_##v, a)
+
+#define LOCAL_ALIGNED_D(a, t, v, s, o, ...)             \
+    DECLARE_ALIGNED(a, t, la_##v) s o;                  \
+    t (*v) o = la_##v
+
+#define LOCAL_ALIGNED(a, t, v, ...) LOCAL_ALIGNED_##a(t, v, __VA_ARGS__)
+
+#if HAVE_LOCAL_ALIGNED
+#   define LOCAL_ALIGNED_4(t, v, ...) E1(LOCAL_ALIGNED_D(4, t, v, __VA_ARGS__,,))
+#else
+#   define LOCAL_ALIGNED_4(t, v, ...) E1(LOCAL_ALIGNED_A(4, t, v, __VA_ARGS__,,))
+#endif
+
+#if HAVE_LOCAL_ALIGNED
+#   define LOCAL_ALIGNED_8(t, v, ...) E1(LOCAL_ALIGNED_D(8, t, v, __VA_ARGS__,,))
+#else
+#   define LOCAL_ALIGNED_8(t, v, ...) E1(LOCAL_ALIGNED_A(8, t, v, __VA_ARGS__,,))
+#endif
+
+#if HAVE_LOCAL_ALIGNED
+#   define LOCAL_ALIGNED_16(t, v, ...) E1(LOCAL_ALIGNED_D(16, t, v, __VA_ARGS__,,))
+#else
+#   define LOCAL_ALIGNED_16(t, v, ...) E1(LOCAL_ALIGNED_A(16, t, v, __VA_ARGS__,,))
+#endif
+
+#if HAVE_LOCAL_ALIGNED
+#   define LOCAL_ALIGNED_32(t, v, ...) E1(LOCAL_ALIGNED_D(32, t, v, __VA_ARGS__,,))
+#else
+#   define LOCAL_ALIGNED_32(t, v, ...) E1(LOCAL_ALIGNED_A(32, t, v, __VA_ARGS__,,))
+#endif
+
+#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\
+{\
+    p = av_malloc(size);\
+    if (!(p) && (size) != 0) {\
+        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
+        goto label;\
+    }\
+}
+
+#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)\
+{\
+    p = av_mallocz(size);\
+    if (!(p) && (size) != 0) {\
+        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
+        goto label;\
+    }\
+}
+
+#define FF_ALLOC_ARRAY_OR_GOTO(ctx, p, nelem, elsize, label)\
+{\
+    p = av_malloc_array(nelem, elsize);\
+    if (!p) {\
+        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
+        goto label;\
+    }\
+}
+
+#define FF_ALLOCZ_ARRAY_OR_GOTO(ctx, p, nelem, elsize, label)\
+{\
+    p = av_mallocz_array(nelem, elsize);\
+    if (!p) {\
+        av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
+        goto label;\
+    }\
+}
+
+#include "libm.h"
+
+/**
+ * Return NULL if CONFIG_SMALL is true, otherwise the argument
+ * without modification. Used to disable the definition of strings
+ * (for example AVCodec long_names).
+ */
+#if CONFIG_SMALL
+#   define NULL_IF_CONFIG_SMALL(x) NULL
+#else
+#   define NULL_IF_CONFIG_SMALL(x) x
+#endif
+
+/**
+ * Define a function with only the non-default version specified.
+ *
+ * On systems with ELF shared libraries, all symbols exported from
+ * FFmpeg libraries are tagged with the name and major version of the
+ * library to which they belong.  If a function is moved from one
+ * library to another, a wrapper must be retained in the original
+ * location to preserve binary compatibility.
+ *
+ * Functions defined with this macro will never be used to resolve
+ * symbols by the build-time linker.
+ *
+ * @param type return type of function
+ * @param name name of function
+ * @param args argument list of function
+ * @param ver  version tag to assign function
+ */
+#if HAVE_SYMVER_ASM_LABEL
+#   define FF_SYMVER(type, name, args, ver)                     \
+    type ff_##name args __asm__ (EXTERN_PREFIX #name "@" ver);  \
+    type ff_##name args
+#elif HAVE_SYMVER_GNU_ASM
+#   define FF_SYMVER(type, name, args, ver)                             \
+    __asm__ (".symver ff_" #name "," EXTERN_PREFIX #name "@" ver);      \
+    type ff_##name args;                                                \
+    type ff_##name args
+#endif
+
+/**
+ * Return NULL if a threading library has not been enabled.
+ * Used to disable threading functions in AVCodec definitions
+ * when not needed.
+ */
+#if HAVE_THREADS
+#   define ONLY_IF_THREADS_ENABLED(x) x
+#else
+#   define ONLY_IF_THREADS_ENABLED(x) NULL
+#endif
+
+/**
+ * Log a generic warning message about a missing feature.
+ *
+ * @param[in] avc a pointer to an arbitrary struct of which the first
+ *                field is a pointer to an AVClass struct
+ * @param[in] msg string containing the name of the missing feature
+ */
+void avpriv_report_missing_feature(void *avc,
+                                   const char *msg, ...) av_printf_format(2, 3);
+
+/**
+ * Log a generic warning message about a missing feature.
+ * Additionally request that a sample showcasing the feature be uploaded.
+ *
+ * @param[in] avc a pointer to an arbitrary struct of which the first field is
+ *                a pointer to an AVClass struct
+ * @param[in] msg string containing the name of the missing feature
+ */
+void avpriv_request_sample(void *avc,
+                           const char *msg, ...) av_printf_format(2, 3);
+
+#if HAVE_LIBC_MSVCRT
+#include <crtversion.h>
+#if defined(_VC_CRT_MAJOR_VERSION) && _VC_CRT_MAJOR_VERSION < 14
+#pragma comment(linker, "/include:" EXTERN_PREFIX "avpriv_strtod")
+#pragma comment(linker, "/include:" EXTERN_PREFIX "avpriv_snprintf")
+#endif
+
+#define avpriv_open ff_open
+#define avpriv_tempfile ff_tempfile
+#define PTRDIFF_SPECIFIER "Id"
+#define SIZE_SPECIFIER "Iu"
+#else
+#define PTRDIFF_SPECIFIER "td"
+#define SIZE_SPECIFIER "zu"
+#endif
+
+#ifdef DEBUG
+#   define ff_dlog(ctx, ...) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__)
+#else
+#   define ff_dlog(ctx, ...) do { if (0) av_log(ctx, AV_LOG_DEBUG, __VA_ARGS__); } while (0)
+#endif
+
+// For debuging we use signed operations so overflows can be detected (by ubsan)
+// For production we use unsigned so there are no undefined operations
+#ifdef CHECKED
+#define SUINT   int
+#define SUINT32 int32_t
+#else
+#define SUINT   unsigned
+#define SUINT32 uint32_t
+#endif
+
+/**
+ * Clip and convert a double value into the long long amin-amax range.
+ * This function is needed because conversion of floating point to integers when
+ * it does not fit in the integer's representation does not necessarily saturate
+ * correctly (usually converted to a cvttsd2si on x86) which saturates numbers
+ * > INT64_MAX to INT64_MIN. The standard marks such conversions as undefined
+ * behavior, allowing this sort of mathematically bogus conversions. This provides
+ * a safe alternative that is slower obviously but assures safety and better
+ * mathematical behavior.
+ * @param a value to clip
+ * @param amin minimum value of the clip range
+ * @param amax maximum value of the clip range
+ * @return clipped value
+ */
+static av_always_inline av_const int64_t ff_rint64_clip(double a, int64_t amin, int64_t amax)
+{
+    int64_t res;
+#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2
+    if (amin > amax) abort();
+#endif
+    // INT64_MAX+1,INT64_MIN are exactly representable as IEEE doubles
+    // do range checks first
+    if (a >=  9223372036854775808.0)
+        return amax;
+    if (a <= -9223372036854775808.0)
+        return amin;
+
+    // safe to call llrint and clip accordingly
+    res = llrint(a);
+    if (res > amax)
+        return amax;
+    if (res < amin)
+        return amin;
+    return res;
+}
+
+/**
+ * A wrapper for open() setting O_CLOEXEC.
+ */
+av_warn_unused_result
+int avpriv_open(const char *filename, int flags, ...);
+
+/**
+ * Wrapper to work around the lack of mkstemp() on mingw.
+ * Also, tries to create file in /tmp first, if possible.
+ * *prefix can be a character constant; *filename will be allocated internally.
+ * @return file descriptor of opened file (or negative value corresponding to an
+ * AVERROR code on error)
+ * and opened file name in **filename.
+ * @note On very old libcs it is necessary to set a secure umask before
+ *       calling this, av_tempfile() can't call umask itself as it is used in
+ *       libraries and could interfere with the calling application.
+ */
+int avpriv_tempfile(const char *prefix, char **filename, int log_offset, void *log_ctx);
+
+int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt);
+
+static av_always_inline av_const int avpriv_mirror(int x, int w)
+{
+    if (!w)
+        return 0;
+
+    while ((unsigned)x > (unsigned)w) {
+        x = -x;
+        if (x < 0)
+            x += 2 * w;
+    }
+    return x;
+}
+
+void ff_check_pixfmt_descriptors(void);
+
+/**
+ * Set a dictionary value to an ISO-8601 compliant timestamp string.
+ *
+ * @param s AVFormatContext
+ * @param key metadata key
+ * @param timestamp unix timestamp in microseconds
+ * @return <0 on error
+ */
+int avpriv_dict_set_timestamp(AVDictionary **dict, const char *key, int64_t timestamp);
+
+// Helper macro for AV_PIX_FMT_FLAG_PSEUDOPAL deprecation. Code inside FFmpeg
+// should always use FF_PSEUDOPAL. Once the public API flag gets removed, all
+// code using it is dead code.
+#if FF_API_PSEUDOPAL
+#define FF_PSEUDOPAL AV_PIX_FMT_FLAG_PSEUDOPAL
+#else
+#define FF_PSEUDOPAL 0
+#endif
+
+#endif /* AVUTIL_INTERNAL_H */
diff --git a/media/ffvpx/libavutil/intfloat.h b/media/ffvpx/libavutil/intfloat.h
new file mode 100644
index 0000000000..fe3d7ec4a5
--- /dev/null
+++ b/media/ffvpx/libavutil/intfloat.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2011 Mans Rullgard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_INTFLOAT_H
+#define AVUTIL_INTFLOAT_H
+
+#include <stdint.h>
+#include "attributes.h"
+
+union av_intfloat32 {
+    uint32_t i;
+    float    f;
+};
+
+union av_intfloat64 {
+    uint64_t i;
+    double   f;
+};
+
+/**
+ * Reinterpret a 32-bit integer as a float.
+ */
+static av_always_inline float av_int2float(uint32_t i)
+{
+    union av_intfloat32 v;
+    v.i = i;
+    return v.f;
+}
+
+/**
+ * Reinterpret a float as a 32-bit integer.
+ */
+static av_always_inline uint32_t av_float2int(float f)
+{
+    union av_intfloat32 v;
+    v.f = f;
+    return v.i;
+}
+
+/**
+ * Reinterpret a 64-bit integer as a double.
+ */
+static av_always_inline double av_int2double(uint64_t i)
+{
+    union av_intfloat64 v;
+    v.i = i;
+    return v.f;
+}
+
+/**
+ * Reinterpret a double as a 64-bit integer.
+ */
+static av_always_inline uint64_t av_double2int(double f)
+{
+    union av_intfloat64 v;
+    v.f = f;
+    return v.i;
+}
+
+#endif /* AVUTIL_INTFLOAT_H */
diff --git a/media/ffvpx/libavutil/intmath.c b/media/ffvpx/libavutil/intmath.c
new file mode 100644
index 0000000000..b0c00e1cad
--- /dev/null
+++ b/media/ffvpx/libavutil/intmath.c
@@ -0,0 +1,34 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "intmath.h"
+
+/* undef these to get the function prototypes from common.h */
+#undef av_log2
+#undef av_log2_16bit
+#include "common.h"
+
+int av_log2(unsigned v)
+{
+    return ff_log2(v);
+}
+
+int av_log2_16bit(unsigned v)
+{
+    return ff_log2_16bit(v);
+}
diff --git a/media/ffvpx/libavutil/intmath.h b/media/ffvpx/libavutil/intmath.h
new file mode 100644
index 0000000000..9573109e9d
--- /dev/null
+++ b/media/ffvpx/libavutil/intmath.h
@@ -0,0 +1,165 @@
+/*
+ * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_INTMATH_H
+#define AVUTIL_INTMATH_H
+
+#include <stdint.h>
+
+#include "config.h"
+#include "attributes.h"
+
+#if ARCH_ARM
+#   include "arm/intmath.h"
+#endif
+#if ARCH_X86
+#   include "x86/intmath.h"
+#endif
+
+#if HAVE_FAST_CLZ
+#if AV_GCC_VERSION_AT_LEAST(3,4)
+#ifndef ff_log2
+#   define ff_log2(x) (31 - __builtin_clz((x)|1))
+#   ifndef ff_log2_16bit
+#      define ff_log2_16bit av_log2
+#   endif
+#endif /* ff_log2 */
+#endif /* AV_GCC_VERSION_AT_LEAST(3,4) */
+#endif
+
+extern const uint8_t ff_log2_tab[256];
+
+#ifndef ff_log2
+#define ff_log2 ff_log2_c
+static av_always_inline av_const int ff_log2_c(unsigned int v)
+{
+    int n = 0;
+    if (v & 0xffff0000) {
+        v >>= 16;
+        n += 16;
+    }
+    if (v & 0xff00) {
+        v >>= 8;
+        n += 8;
+    }
+    n += ff_log2_tab[v];
+
+    return n;
+}
+#endif
+
+#ifndef ff_log2_16bit
+#define ff_log2_16bit ff_log2_16bit_c
+static av_always_inline av_const int ff_log2_16bit_c(unsigned int v)
+{
+    int n = 0;
+    if (v & 0xff00) {
+        v >>= 8;
+        n += 8;
+    }
+    n += ff_log2_tab[v];
+
+    return n;
+}
+#endif
+
+#define av_log2       ff_log2
+#define av_log2_16bit ff_log2_16bit
+
+/**
+ * @addtogroup lavu_math
+ * @{
+ */
+
+#if HAVE_FAST_CLZ
+#if AV_GCC_VERSION_AT_LEAST(3,4)
+#ifndef ff_ctz
+#define ff_ctz(v) __builtin_ctz(v)
+#endif
+#ifndef ff_ctzll
+#define ff_ctzll(v) __builtin_ctzll(v)
+#endif
+#ifndef ff_clz
+#define ff_clz(v) __builtin_clz(v)
+#endif
+#endif
+#endif
+
+#ifndef ff_ctz
+#define ff_ctz ff_ctz_c
+/**
+ * Trailing zero bit count.
+ *
+ * @param v  input value. If v is 0, the result is undefined.
+ * @return   the number of trailing 0-bits
+ */
+/* We use the De-Bruijn method outlined in:
+ * http://supertech.csail.mit.edu/papers/debruijn.pdf. */
+static av_always_inline av_const int ff_ctz_c(int v)
+{
+    static const uint8_t debruijn_ctz32[32] = {
+        0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
+        31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
+    };
+    return debruijn_ctz32[(uint32_t)((v & -v) * 0x077CB531U) >> 27];
+}
+#endif
+
+#ifndef ff_ctzll
+#define ff_ctzll ff_ctzll_c
+/* We use the De-Bruijn method outlined in:
+ * http://supertech.csail.mit.edu/papers/debruijn.pdf. */
+static av_always_inline av_const int ff_ctzll_c(long long v)
+{
+    static const uint8_t debruijn_ctz64[64] = {
+        0, 1, 2, 53, 3, 7, 54, 27, 4, 38, 41, 8, 34, 55, 48, 28,
+        62, 5, 39, 46, 44, 42, 22, 9, 24, 35, 59, 56, 49, 18, 29, 11,
+        63, 52, 6, 26, 37, 40, 33, 47, 61, 45, 43, 21, 23, 58, 17, 10,
+        51, 25, 36, 32, 60, 20, 57, 16, 50, 31, 19, 15, 30, 14, 13, 12
+    };
+    return debruijn_ctz64[(uint64_t)((v & -v) * 0x022FDD63CC95386DU) >> 58];
+}
+#endif
+
+#ifndef ff_clz
+#define ff_clz ff_clz_c
+static av_always_inline av_const unsigned ff_clz_c(unsigned x)
+{
+    unsigned i = sizeof(x) * 8;
+
+    while (x) {
+        x >>= 1;
+        i--;
+    }
+
+    return i;
+}
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(3,4)
+#ifndef av_parity
+#define av_parity __builtin_parity
+#endif
+#endif
+
+/**
+ * @}
+ */
+#endif /* AVUTIL_INTMATH_H */
diff --git a/media/ffvpx/libavutil/intreadwrite.h b/media/ffvpx/libavutil/intreadwrite.h
new file mode 100644
index 0000000000..4c8413a536
--- /dev/null
+++ b/media/ffvpx/libavutil/intreadwrite.h
@@ -0,0 +1,644 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_INTREADWRITE_H
+#define AVUTIL_INTREADWRITE_H
+
+#include <stdint.h>
+#include "libavutil/avconfig.h"
+#include "attributes.h"
+#include "bswap.h"
+
+typedef union {
+    uint64_t u64;
+    uint32_t u32[2];
+    uint16_t u16[4];
+    uint8_t  u8 [8];
+    double   f64;
+    float    f32[2];
+} av_alias av_alias64;
+
+typedef union {
+    uint32_t u32;
+    uint16_t u16[2];
+    uint8_t  u8 [4];
+    float    f32;
+} av_alias av_alias32;
+
+typedef union {
+    uint16_t u16;
+    uint8_t  u8 [2];
+} av_alias av_alias16;
+
+/*
+ * Arch-specific headers can provide any combination of
+ * AV_[RW][BLN](16|24|32|48|64) and AV_(COPY|SWAP|ZERO)(64|128) macros.
+ * Preprocessor symbols must be defined, even if these are implemented
+ * as inline functions.
+ *
+ * R/W means read/write, B/L/N means big/little/native endianness.
+ * The following macros require aligned access, compared to their
+ * unaligned variants: AV_(COPY|SWAP|ZERO)(64|128), AV_[RW]N[8-64]A.
+ * Incorrect usage may range from abysmal performance to crash
+ * depending on the platform.
+ *
+ * The unaligned variants are AV_[RW][BLN][8-64] and AV_COPY*U.
+ */
+
+#ifdef HAVE_AV_CONFIG_H
+
+#include "config.h"
+
+#if   ARCH_ARM
+#   include "arm/intreadwrite.h"
+#elif ARCH_AVR32
+#   include "avr32/intreadwrite.h"
+#elif ARCH_MIPS
+#   include "mips/intreadwrite.h"
+#elif ARCH_PPC
+#   include "ppc/intreadwrite.h"
+#elif ARCH_TOMI
+#   include "tomi/intreadwrite.h"
+#elif ARCH_X86
+#   include "x86/intreadwrite.h"
+#endif
+
+#endif /* HAVE_AV_CONFIG_H */
+
+/*
+ * Map AV_RNXX <-> AV_R[BL]XX for all variants provided by per-arch headers.
+ */
+
+#if AV_HAVE_BIGENDIAN
+
+#   if    defined(AV_RN16) && !defined(AV_RB16)
+#       define AV_RB16(p) AV_RN16(p)
+#   elif !defined(AV_RN16) &&  defined(AV_RB16)
+#       define AV_RN16(p) AV_RB16(p)
+#   endif
+
+#   if    defined(AV_WN16) && !defined(AV_WB16)
+#       define AV_WB16(p, v) AV_WN16(p, v)
+#   elif !defined(AV_WN16) &&  defined(AV_WB16)
+#       define AV_WN16(p, v) AV_WB16(p, v)
+#   endif
+
+#   if    defined(AV_RN24) && !defined(AV_RB24)
+#       define AV_RB24(p) AV_RN24(p)
+#   elif !defined(AV_RN24) &&  defined(AV_RB24)
+#       define AV_RN24(p) AV_RB24(p)
+#   endif
+
+#   if    defined(AV_WN24) && !defined(AV_WB24)
+#       define AV_WB24(p, v) AV_WN24(p, v)
+#   elif !defined(AV_WN24) &&  defined(AV_WB24)
+#       define AV_WN24(p, v) AV_WB24(p, v)
+#   endif
+
+#   if    defined(AV_RN32) && !defined(AV_RB32)
+#       define AV_RB32(p) AV_RN32(p)
+#   elif !defined(AV_RN32) &&  defined(AV_RB32)
+#       define AV_RN32(p) AV_RB32(p)
+#   endif
+
+#   if    defined(AV_WN32) && !defined(AV_WB32)
+#       define AV_WB32(p, v) AV_WN32(p, v)
+#   elif !defined(AV_WN32) &&  defined(AV_WB32)
+#       define AV_WN32(p, v) AV_WB32(p, v)
+#   endif
+
+#   if    defined(AV_RN48) && !defined(AV_RB48)
+#       define AV_RB48(p) AV_RN48(p)
+#   elif !defined(AV_RN48) &&  defined(AV_RB48)
+#       define AV_RN48(p) AV_RB48(p)
+#   endif
+
+#   if    defined(AV_WN48) && !defined(AV_WB48)
+#       define AV_WB48(p, v) AV_WN48(p, v)
+#   elif !defined(AV_WN48) &&  defined(AV_WB48)
+#       define AV_WN48(p, v) AV_WB48(p, v)
+#   endif
+
+#   if    defined(AV_RN64) && !defined(AV_RB64)
+#       define AV_RB64(p) AV_RN64(p)
+#   elif !defined(AV_RN64) &&  defined(AV_RB64)
+#       define AV_RN64(p) AV_RB64(p)
+#   endif
+
+#   if    defined(AV_WN64) && !defined(AV_WB64)
+#       define AV_WB64(p, v) AV_WN64(p, v)
+#   elif !defined(AV_WN64) &&  defined(AV_WB64)
+#       define AV_WN64(p, v) AV_WB64(p, v)
+#   endif
+
+#else /* AV_HAVE_BIGENDIAN */
+
+#   if    defined(AV_RN16) && !defined(AV_RL16)
+#       define AV_RL16(p) AV_RN16(p)
+#   elif !defined(AV_RN16) &&  defined(AV_RL16)
+#       define AV_RN16(p) AV_RL16(p)
+#   endif
+
+#   if    defined(AV_WN16) && !defined(AV_WL16)
+#       define AV_WL16(p, v) AV_WN16(p, v)
+#   elif !defined(AV_WN16) &&  defined(AV_WL16)
+#       define AV_WN16(p, v) AV_WL16(p, v)
+#   endif
+
+#   if    defined(AV_RN24) && !defined(AV_RL24)
+#       define AV_RL24(p) AV_RN24(p)
+#   elif !defined(AV_RN24) &&  defined(AV_RL24)
+#       define AV_RN24(p) AV_RL24(p)
+#   endif
+
+#   if    defined(AV_WN24) && !defined(AV_WL24)
+#       define AV_WL24(p, v) AV_WN24(p, v)
+#   elif !defined(AV_WN24) &&  defined(AV_WL24)
+#       define AV_WN24(p, v) AV_WL24(p, v)
+#   endif
+
+#   if    defined(AV_RN32) && !defined(AV_RL32)
+#       define AV_RL32(p) AV_RN32(p)
+#   elif !defined(AV_RN32) &&  defined(AV_RL32)
+#       define AV_RN32(p) AV_RL32(p)
+#   endif
+
+#   if    defined(AV_WN32) && !defined(AV_WL32)
+#       define AV_WL32(p, v) AV_WN32(p, v)
+#   elif !defined(AV_WN32) &&  defined(AV_WL32)
+#       define AV_WN32(p, v) AV_WL32(p, v)
+#   endif
+
+#   if    defined(AV_RN48) && !defined(AV_RL48)
+#       define AV_RL48(p) AV_RN48(p)
+#   elif !defined(AV_RN48) &&  defined(AV_RL48)
+#       define AV_RN48(p) AV_RL48(p)
+#   endif
+
+#   if    defined(AV_WN48) && !defined(AV_WL48)
+#       define AV_WL48(p, v) AV_WN48(p, v)
+#   elif !defined(AV_WN48) &&  defined(AV_WL48)
+#       define AV_WN48(p, v) AV_WL48(p, v)
+#   endif
+
+#   if    defined(AV_RN64) && !defined(AV_RL64)
+#       define AV_RL64(p) AV_RN64(p)
+#   elif !defined(AV_RN64) &&  defined(AV_RL64)
+#       define AV_RN64(p) AV_RL64(p)
+#   endif
+
+#   if    defined(AV_WN64) && !defined(AV_WL64)
+#       define AV_WL64(p, v) AV_WN64(p, v)
+#   elif !defined(AV_WN64) &&  defined(AV_WL64)
+#       define AV_WN64(p, v) AV_WL64(p, v)
+#   endif
+
+#endif /* !AV_HAVE_BIGENDIAN */
+
+/*
+ * Define AV_[RW]N helper macros to simplify definitions not provided
+ * by per-arch headers.
+ */
+
+#if defined(__GNUC__)
+
+union unaligned_64 { uint64_t l; } __attribute__((packed)) av_alias;
+union unaligned_32 { uint32_t l; } __attribute__((packed)) av_alias;
+union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
+
+#   define AV_RN(s, p) (((const union unaligned_##s *) (p))->l)
+#   define AV_WN(s, p, v) ((((union unaligned_##s *) (p))->l) = (v))
+
+#elif defined(_MSC_VER) && (defined(_M_ARM) || defined(_M_X64) || defined(_M_ARM64)) && AV_HAVE_FAST_UNALIGNED
+
+#   define AV_RN(s, p) (*((const __unaligned uint##s##_t*)(p)))
+#   define AV_WN(s, p, v) (*((__unaligned uint##s##_t*)(p)) = (v))
+
+#elif AV_HAVE_FAST_UNALIGNED
+
+#   define AV_RN(s, p) (((const av_alias##s*)(p))->u##s)
+#   define AV_WN(s, p, v) (((av_alias##s*)(p))->u##s = (v))
+
+#else
+
+#ifndef AV_RB16
+#   define AV_RB16(x)                           \
+    ((((const uint8_t*)(x))[0] << 8) |          \
+      ((const uint8_t*)(x))[1])
+#endif
+#ifndef AV_WB16
+#   define AV_WB16(p, val) do {                 \
+        uint16_t d = (val);                     \
+        ((uint8_t*)(p))[1] = (d);               \
+        ((uint8_t*)(p))[0] = (d)>>8;            \
+    } while(0)
+#endif
+
+#ifndef AV_RL16
+#   define AV_RL16(x)                           \
+    ((((const uint8_t*)(x))[1] << 8) |          \
+      ((const uint8_t*)(x))[0])
+#endif
+#ifndef AV_WL16
+#   define AV_WL16(p, val) do {                 \
+        uint16_t d = (val);                     \
+        ((uint8_t*)(p))[0] = (d);               \
+        ((uint8_t*)(p))[1] = (d)>>8;            \
+    } while(0)
+#endif
+
+#ifndef AV_RB32
+#   define AV_RB32(x)                                \
+    (((uint32_t)((const uint8_t*)(x))[0] << 24) |    \
+               (((const uint8_t*)(x))[1] << 16) |    \
+               (((const uint8_t*)(x))[2] <<  8) |    \
+                ((const uint8_t*)(x))[3])
+#endif
+#ifndef AV_WB32
+#   define AV_WB32(p, val) do {                 \
+        uint32_t d = (val);                     \
+        ((uint8_t*)(p))[3] = (d);               \
+        ((uint8_t*)(p))[2] = (d)>>8;            \
+        ((uint8_t*)(p))[1] = (d)>>16;           \
+        ((uint8_t*)(p))[0] = (d)>>24;           \
+    } while(0)
+#endif
+
+#ifndef AV_RL32
+#   define AV_RL32(x)                                \
+    (((uint32_t)((const uint8_t*)(x))[3] << 24) |    \
+               (((const uint8_t*)(x))[2] << 16) |    \
+               (((const uint8_t*)(x))[1] <<  8) |    \
+                ((const uint8_t*)(x))[0])
+#endif
+#ifndef AV_WL32
+#   define AV_WL32(p, val) do {                 \
+        uint32_t d = (val);                     \
+        ((uint8_t*)(p))[0] = (d);               \
+        ((uint8_t*)(p))[1] = (d)>>8;            \
+        ((uint8_t*)(p))[2] = (d)>>16;           \
+        ((uint8_t*)(p))[3] = (d)>>24;           \
+    } while(0)
+#endif
+
+#ifndef AV_RB64
+#   define AV_RB64(x)                                   \
+    (((uint64_t)((const uint8_t*)(x))[0] << 56) |       \
+     ((uint64_t)((const uint8_t*)(x))[1] << 48) |       \
+     ((uint64_t)((const uint8_t*)(x))[2] << 40) |       \
+     ((uint64_t)((const uint8_t*)(x))[3] << 32) |       \
+     ((uint64_t)((const uint8_t*)(x))[4] << 24) |       \
+     ((uint64_t)((const uint8_t*)(x))[5] << 16) |       \
+     ((uint64_t)((const uint8_t*)(x))[6] <<  8) |       \
+      (uint64_t)((const uint8_t*)(x))[7])
+#endif
+#ifndef AV_WB64
+#   define AV_WB64(p, val) do {                 \
+        uint64_t d = (val);                     \
+        ((uint8_t*)(p))[7] = (d);               \
+        ((uint8_t*)(p))[6] = (d)>>8;            \
+        ((uint8_t*)(p))[5] = (d)>>16;           \
+        ((uint8_t*)(p))[4] = (d)>>24;           \
+        ((uint8_t*)(p))[3] = (d)>>32;           \
+        ((uint8_t*)(p))[2] = (d)>>40;           \
+        ((uint8_t*)(p))[1] = (d)>>48;           \
+        ((uint8_t*)(p))[0] = (d)>>56;           \
+    } while(0)
+#endif
+
+#ifndef AV_RL64
+#   define AV_RL64(x)                                   \
+    (((uint64_t)((const uint8_t*)(x))[7] << 56) |       \
+     ((uint64_t)((const uint8_t*)(x))[6] << 48) |       \
+     ((uint64_t)((const uint8_t*)(x))[5] << 40) |       \
+     ((uint64_t)((const uint8_t*)(x))[4] << 32) |       \
+     ((uint64_t)((const uint8_t*)(x))[3] << 24) |       \
+     ((uint64_t)((const uint8_t*)(x))[2] << 16) |       \
+     ((uint64_t)((const uint8_t*)(x))[1] <<  8) |       \
+      (uint64_t)((const uint8_t*)(x))[0])
+#endif
+#ifndef AV_WL64
+#   define AV_WL64(p, val) do {                 \
+        uint64_t d = (val);                     \
+        ((uint8_t*)(p))[0] = (d);               \
+        ((uint8_t*)(p))[1] = (d)>>8;            \
+        ((uint8_t*)(p))[2] = (d)>>16;           \
+        ((uint8_t*)(p))[3] = (d)>>24;           \
+        ((uint8_t*)(p))[4] = (d)>>32;           \
+        ((uint8_t*)(p))[5] = (d)>>40;           \
+        ((uint8_t*)(p))[6] = (d)>>48;           \
+        ((uint8_t*)(p))[7] = (d)>>56;           \
+    } while(0)
+#endif
+
+#if AV_HAVE_BIGENDIAN
+#   define AV_RN(s, p)    AV_RB##s(p)
+#   define AV_WN(s, p, v) AV_WB##s(p, v)
+#else
+#   define AV_RN(s, p)    AV_RL##s(p)
+#   define AV_WN(s, p, v) AV_WL##s(p, v)
+#endif
+
+#endif /* HAVE_FAST_UNALIGNED */
+
+#ifndef AV_RN16
+#   define AV_RN16(p) AV_RN(16, p)
+#endif
+
+#ifndef AV_RN32
+#   define AV_RN32(p) AV_RN(32, p)
+#endif
+
+#ifndef AV_RN64
+#   define AV_RN64(p) AV_RN(64, p)
+#endif
+
+#ifndef AV_WN16
+#   define AV_WN16(p, v) AV_WN(16, p, v)
+#endif
+
+#ifndef AV_WN32
+#   define AV_WN32(p, v) AV_WN(32, p, v)
+#endif
+
+#ifndef AV_WN64
+#   define AV_WN64(p, v) AV_WN(64, p, v)
+#endif
+
+#if AV_HAVE_BIGENDIAN
+#   define AV_RB(s, p)    AV_RN##s(p)
+#   define AV_WB(s, p, v) AV_WN##s(p, v)
+#   define AV_RL(s, p)    av_bswap##s(AV_RN##s(p))
+#   define AV_WL(s, p, v) AV_WN##s(p, av_bswap##s(v))
+#else
+#   define AV_RB(s, p)    av_bswap##s(AV_RN##s(p))
+#   define AV_WB(s, p, v) AV_WN##s(p, av_bswap##s(v))
+#   define AV_RL(s, p)    AV_RN##s(p)
+#   define AV_WL(s, p, v) AV_WN##s(p, v)
+#endif
+
+#define AV_RB8(x)     (((const uint8_t*)(x))[0])
+#define AV_WB8(p, d)  do { ((uint8_t*)(p))[0] = (d); } while(0)
+
+#define AV_RL8(x)     AV_RB8(x)
+#define AV_WL8(p, d)  AV_WB8(p, d)
+
+#ifndef AV_RB16
+#   define AV_RB16(p)    AV_RB(16, p)
+#endif
+#ifndef AV_WB16
+#   define AV_WB16(p, v) AV_WB(16, p, v)
+#endif
+
+#ifndef AV_RL16
+#   define AV_RL16(p)    AV_RL(16, p)
+#endif
+#ifndef AV_WL16
+#   define AV_WL16(p, v) AV_WL(16, p, v)
+#endif
+
+#ifndef AV_RB32
+#   define AV_RB32(p)    AV_RB(32, p)
+#endif
+#ifndef AV_WB32
+#   define AV_WB32(p, v) AV_WB(32, p, v)
+#endif
+
+#ifndef AV_RL32
+#   define AV_RL32(p)    AV_RL(32, p)
+#endif
+#ifndef AV_WL32
+#   define AV_WL32(p, v) AV_WL(32, p, v)
+#endif
+
+#ifndef AV_RB64
+#   define AV_RB64(p)    AV_RB(64, p)
+#endif
+#ifndef AV_WB64
+#   define AV_WB64(p, v) AV_WB(64, p, v)
+#endif
+
+#ifndef AV_RL64
+#   define AV_RL64(p)    AV_RL(64, p)
+#endif
+#ifndef AV_WL64
+#   define AV_WL64(p, v) AV_WL(64, p, v)
+#endif
+
+#ifndef AV_RB24
+#   define AV_RB24(x)                           \
+    ((((const uint8_t*)(x))[0] << 16) |         \
+     (((const uint8_t*)(x))[1] <<  8) |         \
+      ((const uint8_t*)(x))[2])
+#endif
+#ifndef AV_WB24
+#   define AV_WB24(p, d) do {                   \
+        ((uint8_t*)(p))[2] = (d);               \
+        ((uint8_t*)(p))[1] = (d)>>8;            \
+        ((uint8_t*)(p))[0] = (d)>>16;           \
+    } while(0)
+#endif
+
+#ifndef AV_RL24
+#   define AV_RL24(x)                           \
+    ((((const uint8_t*)(x))[2] << 16) |         \
+     (((const uint8_t*)(x))[1] <<  8) |         \
+      ((const uint8_t*)(x))[0])
+#endif
+#ifndef AV_WL24
+#   define AV_WL24(p, d) do {                   \
+        ((uint8_t*)(p))[0] = (d);               \
+        ((uint8_t*)(p))[1] = (d)>>8;            \
+        ((uint8_t*)(p))[2] = (d)>>16;           \
+    } while(0)
+#endif
+
+#ifndef AV_RB48
+#   define AV_RB48(x)                                     \
+    (((uint64_t)((const uint8_t*)(x))[0] << 40) |         \
+     ((uint64_t)((const uint8_t*)(x))[1] << 32) |         \
+     ((uint64_t)((const uint8_t*)(x))[2] << 24) |         \
+     ((uint64_t)((const uint8_t*)(x))[3] << 16) |         \
+     ((uint64_t)((const uint8_t*)(x))[4] <<  8) |         \
+      (uint64_t)((const uint8_t*)(x))[5])
+#endif
+#ifndef AV_WB48
+#   define AV_WB48(p, darg) do {                \
+        uint64_t d = (darg);                    \
+        ((uint8_t*)(p))[5] = (d);               \
+        ((uint8_t*)(p))[4] = (d)>>8;            \
+        ((uint8_t*)(p))[3] = (d)>>16;           \
+        ((uint8_t*)(p))[2] = (d)>>24;           \
+        ((uint8_t*)(p))[1] = (d)>>32;           \
+        ((uint8_t*)(p))[0] = (d)>>40;           \
+    } while(0)
+#endif
+
+#ifndef AV_RL48
+#   define AV_RL48(x)                                     \
+    (((uint64_t)((const uint8_t*)(x))[5] << 40) |         \
+     ((uint64_t)((const uint8_t*)(x))[4] << 32) |         \
+     ((uint64_t)((const uint8_t*)(x))[3] << 24) |         \
+     ((uint64_t)((const uint8_t*)(x))[2] << 16) |         \
+     ((uint64_t)((const uint8_t*)(x))[1] <<  8) |         \
+      (uint64_t)((const uint8_t*)(x))[0])
+#endif
+#ifndef AV_WL48
+#   define AV_WL48(p, darg) do {                \
+        uint64_t d = (darg);                    \
+        ((uint8_t*)(p))[0] = (d);               \
+        ((uint8_t*)(p))[1] = (d)>>8;            \
+        ((uint8_t*)(p))[2] = (d)>>16;           \
+        ((uint8_t*)(p))[3] = (d)>>24;           \
+        ((uint8_t*)(p))[4] = (d)>>32;           \
+        ((uint8_t*)(p))[5] = (d)>>40;           \
+    } while(0)
+#endif
+
+/*
+ * The AV_[RW]NA macros access naturally aligned data
+ * in a type-safe way.
+ */
+
+#define AV_RNA(s, p)    (((const av_alias##s*)(p))->u##s)
+#define AV_WNA(s, p, v) (((av_alias##s*)(p))->u##s = (v))
+
+#ifndef AV_RN16A
+#   define AV_RN16A(p) AV_RNA(16, p)
+#endif
+
+#ifndef AV_RN32A
+#   define AV_RN32A(p) AV_RNA(32, p)
+#endif
+
+#ifndef AV_RN64A
+#   define AV_RN64A(p) AV_RNA(64, p)
+#endif
+
+#ifndef AV_WN16A
+#   define AV_WN16A(p, v) AV_WNA(16, p, v)
+#endif
+
+#ifndef AV_WN32A
+#   define AV_WN32A(p, v) AV_WNA(32, p, v)
+#endif
+
+#ifndef AV_WN64A
+#   define AV_WN64A(p, v) AV_WNA(64, p, v)
+#endif
+
+#if AV_HAVE_BIGENDIAN
+#   define AV_RLA(s, p)    av_bswap##s(AV_RN##s##A(p))
+#   define AV_WLA(s, p, v) AV_WN##s##A(p, av_bswap##s(v))
+#else
+#   define AV_RLA(s, p)    AV_RN##s##A(p)
+#   define AV_WLA(s, p, v) AV_WN##s##A(p, v)
+#endif
+
+#ifndef AV_RL64A
+#   define AV_RL64A(p) AV_RLA(64, p)
+#endif
+#ifndef AV_WL64A
+#   define AV_WL64A(p, v) AV_WLA(64, p, v)
+#endif
+
+/*
+ * The AV_COPYxxU macros are suitable for copying data to/from unaligned
+ * memory locations.
+ */
+
+#define AV_COPYU(n, d, s) AV_WN##n(d, AV_RN##n(s));
+
+#ifndef AV_COPY16U
+#   define AV_COPY16U(d, s) AV_COPYU(16, d, s)
+#endif
+
+#ifndef AV_COPY32U
+#   define AV_COPY32U(d, s) AV_COPYU(32, d, s)
+#endif
+
+#ifndef AV_COPY64U
+#   define AV_COPY64U(d, s) AV_COPYU(64, d, s)
+#endif
+
+#ifndef AV_COPY128U
+#   define AV_COPY128U(d, s)                                    \
+    do {                                                        \
+        AV_COPY64U(d, s);                                       \
+        AV_COPY64U((char *)(d) + 8, (const char *)(s) + 8);     \
+    } while(0)
+#endif
+
+/* Parameters for AV_COPY*, AV_SWAP*, AV_ZERO* must be
+ * naturally aligned. They may be implemented using MMX,
+ * so emms_c() must be called before using any float code
+ * afterwards.
+ */
+
+#define AV_COPY(n, d, s) \
+    (((av_alias##n*)(d))->u##n = ((const av_alias##n*)(s))->u##n)
+
+#ifndef AV_COPY16
+#   define AV_COPY16(d, s) AV_COPY(16, d, s)
+#endif
+
+#ifndef AV_COPY32
+#   define AV_COPY32(d, s) AV_COPY(32, d, s)
+#endif
+
+#ifndef AV_COPY64
+#   define AV_COPY64(d, s) AV_COPY(64, d, s)
+#endif
+
+#ifndef AV_COPY128
+#   define AV_COPY128(d, s)                    \
+    do {                                       \
+        AV_COPY64(d, s);                       \
+        AV_COPY64((char*)(d)+8, (char*)(s)+8); \
+    } while(0)
+#endif
+
+#define AV_SWAP(n, a, b) FFSWAP(av_alias##n, *(av_alias##n*)(a), *(av_alias##n*)(b))
+
+#ifndef AV_SWAP64
+#   define AV_SWAP64(a, b) AV_SWAP(64, a, b)
+#endif
+
+#define AV_ZERO(n, d) (((av_alias##n*)(d))->u##n = 0)
+
+#ifndef AV_ZERO16
+#   define AV_ZERO16(d) AV_ZERO(16, d)
+#endif
+
+#ifndef AV_ZERO32
+#   define AV_ZERO32(d) AV_ZERO(32, d)
+#endif
+
+#ifndef AV_ZERO64
+#   define AV_ZERO64(d) AV_ZERO(64, d)
+#endif
+
+#ifndef AV_ZERO128
+#   define AV_ZERO128(d)         \
+    do {                         \
+        AV_ZERO64(d);            \
+        AV_ZERO64((char*)(d)+8); \
+    } while(0)
+#endif
+
+#endif /* AVUTIL_INTREADWRITE_H */
diff --git a/media/ffvpx/libavutil/libm.h b/media/ffvpx/libavutil/libm.h
new file mode 100644
index 0000000000..a819962391
--- /dev/null
+++ b/media/ffvpx/libavutil/libm.h
@@ -0,0 +1,471 @@
+/*
+ * erf function: Copyright (c) 2006 John Maddock
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Replacements for frequently missing libm functions
+ */
+
+#ifndef AVUTIL_LIBM_H
+#define AVUTIL_LIBM_H
+
+#include <math.h>
+#include "config.h"
+#include "attributes.h"
+#include "intfloat.h"
+#include "mathematics.h"
+
+#if HAVE_MIPSFPU && HAVE_INLINE_ASM
+#include "libavutil/mips/libm_mips.h"
+#endif /* HAVE_MIPSFPU && HAVE_INLINE_ASM*/
+
+#if !HAVE_ATANF
+#undef atanf
+#define atanf(x) ((float)atan(x))
+#endif /* HAVE_ATANF */
+
+#if !HAVE_ATAN2F
+#undef atan2f
+#define atan2f(y, x) ((float)atan2(y, x))
+#endif /* HAVE_ATAN2F */
+
+#if !HAVE_POWF
+#undef powf
+#define powf(x, y) ((float)pow(x, y))
+#endif /* HAVE_POWF */
+
+#if !HAVE_CBRT
+static av_always_inline double cbrt(double x)
+{
+    return x < 0 ? -pow(-x, 1.0 / 3.0) : pow(x, 1.0 / 3.0);
+}
+#endif /* HAVE_CBRT */
+
+#if !HAVE_CBRTF
+static av_always_inline float cbrtf(float x)
+{
+    return x < 0 ? -powf(-x, 1.0 / 3.0) : powf(x, 1.0 / 3.0);
+}
+#endif /* HAVE_CBRTF */
+
+#if !HAVE_COPYSIGN
+static av_always_inline double copysign(double x, double y)
+{
+    uint64_t vx = av_double2int(x);
+    uint64_t vy = av_double2int(y);
+    return av_int2double((vx & UINT64_C(0x7fffffffffffffff)) | (vy & UINT64_C(0x8000000000000000)));
+}
+#endif /* HAVE_COPYSIGN */
+
+#if !HAVE_COSF
+#undef cosf
+#define cosf(x) ((float)cos(x))
+#endif /* HAVE_COSF */
+
+#if !HAVE_ERF
+static inline double ff_eval_poly(const double *coeff, int size, double x) {
+    double sum = coeff[size-1];
+    int i;
+    for (i = size-2; i >= 0; --i) {
+        sum *= x;
+        sum += coeff[i];
+    }
+    return sum;
+}
+
+/**
+ * erf function
+ * Algorithm taken from the Boost project, source:
+ * http://www.boost.org/doc/libs/1_46_1/boost/math/special_functions/erf.hpp
+ * Use, modification and distribution are subject to the
+ * Boost Software License, Version 1.0 (see notice below).
+ * Boost Software License - Version 1.0 - August 17th, 2003
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+ */
+static inline double erf(double z)
+{
+#ifndef FF_ARRAY_ELEMS
+#define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
+#endif
+    double result;
+
+    /* handle the symmetry: erf(-x) = -erf(x) */
+    if (z < 0)
+        return -erf(-z);
+
+    /* branch based on range of z, and pick appropriate approximation */
+    if (z == 0)
+        return 0;
+    else if (z < 1e-10)
+        return z * 1.125 + z * 0.003379167095512573896158903121545171688;
+    else if (z < 0.5) {
+        // Maximum Deviation Found:                     1.561e-17
+        // Expected Error Term:                         1.561e-17
+        // Maximum Relative Change in Control Points:   1.155e-04
+        // Max Error found at double precision =        2.961182e-17
+
+        static const double y = 1.044948577880859375;
+        static const double p[] = {
+            0.0834305892146531832907,
+            -0.338165134459360935041,
+            -0.0509990735146777432841,
+            -0.00772758345802133288487,
+            -0.000322780120964605683831,
+        };
+        static const double q[] = {
+            1,
+            0.455004033050794024546,
+            0.0875222600142252549554,
+            0.00858571925074406212772,
+            0.000370900071787748000569,
+        };
+        double zz = z * z;
+        return z * (y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), zz) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), zz));
+    }
+    /* here onwards compute erfc */
+    else if (z < 1.5) {
+        // Maximum Deviation Found:                     3.702e-17
+        // Expected Error Term:                         3.702e-17
+        // Maximum Relative Change in Control Points:   2.845e-04
+        // Max Error found at double precision =        4.841816e-17
+        static const double y = 0.405935764312744140625;
+        static const double p[] = {
+            -0.098090592216281240205,
+            0.178114665841120341155,
+            0.191003695796775433986,
+            0.0888900368967884466578,
+            0.0195049001251218801359,
+            0.00180424538297014223957,
+        };
+        static const double q[] = {
+            1,
+            1.84759070983002217845,
+            1.42628004845511324508,
+            0.578052804889902404909,
+            0.12385097467900864233,
+            0.0113385233577001411017,
+            0.337511472483094676155e-5,
+        };
+        result = y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), z - 0.5) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), z - 0.5);
+        result *= exp(-z * z) / z;
+        return 1 - result;
+    }
+    else if (z < 2.5) {
+        // Max Error found at double precision =        6.599585e-18
+        // Maximum Deviation Found:                     3.909e-18
+        // Expected Error Term:                         3.909e-18
+        // Maximum Relative Change in Control Points:   9.886e-05
+        static const double y = 0.50672817230224609375;
+        static const double p[] = {
+            -0.0243500476207698441272,
+            0.0386540375035707201728,
+            0.04394818964209516296,
+            0.0175679436311802092299,
+            0.00323962406290842133584,
+            0.000235839115596880717416,
+        };
+        static const double q[] = {
+            1,
+            1.53991494948552447182,
+            0.982403709157920235114,
+            0.325732924782444448493,
+            0.0563921837420478160373,
+            0.00410369723978904575884,
+        };
+        result = y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), z - 1.5) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), z - 1.5);
+        result *= exp(-z * z) / z;
+        return 1 - result;
+    }
+    else if (z < 4.5) {
+        // Maximum Deviation Found:                     1.512e-17
+        // Expected Error Term:                         1.512e-17
+        // Maximum Relative Change in Control Points:   2.222e-04
+        // Max Error found at double precision =        2.062515e-17
+        static const double y = 0.5405750274658203125;
+        static const double p[] = {
+            0.00295276716530971662634,
+            0.0137384425896355332126,
+            0.00840807615555585383007,
+            0.00212825620914618649141,
+            0.000250269961544794627958,
+            0.113212406648847561139e-4,
+        };
+        static const double q[] = {
+            1,
+            1.04217814166938418171,
+            0.442597659481563127003,
+            0.0958492726301061423444,
+            0.0105982906484876531489,
+            0.000479411269521714493907,
+        };
+        result = y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), z - 3.5) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), z - 3.5);
+        result *= exp(-z * z) / z;
+        return 1 - result;
+    }
+    /* differ from Boost here, the claim of underflow of erfc(x) past 5.8 is
+     * slightly incorrect, change to 5.92
+     * (really somewhere between 5.9125 and 5.925 is when it saturates) */
+    else if (z < 5.92) {
+        // Max Error found at double precision =        2.997958e-17
+        // Maximum Deviation Found:                     2.860e-17
+        // Expected Error Term:                         2.859e-17
+        // Maximum Relative Change in Control Points:   1.357e-05
+        static const double y = 0.5579090118408203125;
+        static const double p[] = {
+            0.00628057170626964891937,
+            0.0175389834052493308818,
+            -0.212652252872804219852,
+            -0.687717681153649930619,
+            -2.5518551727311523996,
+            -3.22729451764143718517,
+            -2.8175401114513378771,
+        };
+        static const double q[] = {
+            1,
+            2.79257750980575282228,
+            11.0567237927800161565,
+            15.930646027911794143,
+            22.9367376522880577224,
+            13.5064170191802889145,
+            5.48409182238641741584,
+        };
+        result = y + ff_eval_poly(p, FF_ARRAY_ELEMS(p), 1 / z) / ff_eval_poly(q, FF_ARRAY_ELEMS(q), 1 / z);
+        result *= exp(-z * z) / z;
+        return 1 - result;
+    }
+    /* handle the nan case, but don't use isnan for max portability */
+    else if (z != z)
+        return z;
+    /* finally return saturated result */
+    else
+        return 1;
+}
+#endif /* HAVE_ERF */
+
+#if !HAVE_EXPF
+#undef expf
+#define expf(x) ((float)exp(x))
+#endif /* HAVE_EXPF */
+
+#if !HAVE_EXP2
+#undef exp2
+#define exp2(x) exp((x) * M_LN2)
+#endif /* HAVE_EXP2 */
+
+#if !HAVE_EXP2F
+#undef exp2f
+#define exp2f(x) ((float)exp2(x))
+#endif /* HAVE_EXP2F */
+
+#if !HAVE_ISINF
+#undef isinf
+/* Note: these do not follow the BSD/Apple/GNU convention of returning -1 for
+-Inf, +1 for Inf, 0 otherwise, but merely follow the POSIX/ISO mandated spec of
+returning a non-zero value for +/-Inf, 0 otherwise. */
+static av_always_inline av_const int avpriv_isinff(float x)
+{
+    uint32_t v = av_float2int(x);
+    if ((v & 0x7f800000) != 0x7f800000)
+        return 0;
+    return !(v & 0x007fffff);
+}
+
+static av_always_inline av_const int avpriv_isinf(double x)
+{
+    uint64_t v = av_double2int(x);
+    if ((v & 0x7ff0000000000000) != 0x7ff0000000000000)
+        return 0;
+    return !(v & 0x000fffffffffffff);
+}
+
+#define isinf(x)                  \
+    (sizeof(x) == sizeof(float)   \
+        ? avpriv_isinff(x)        \
+        : avpriv_isinf(x))
+#endif /* HAVE_ISINF */
+
+#if !HAVE_ISNAN
+static av_always_inline av_const int avpriv_isnanf(float x)
+{
+    uint32_t v = av_float2int(x);
+    if ((v & 0x7f800000) != 0x7f800000)
+        return 0;
+    return v & 0x007fffff;
+}
+
+static av_always_inline av_const int avpriv_isnan(double x)
+{
+    uint64_t v = av_double2int(x);
+    if ((v & 0x7ff0000000000000) != 0x7ff0000000000000)
+        return 0;
+    return (v & 0x000fffffffffffff) && 1;
+}
+
+#define isnan(x)                  \
+    (sizeof(x) == sizeof(float)   \
+        ? avpriv_isnanf(x)        \
+        : avpriv_isnan(x))
+#endif /* HAVE_ISNAN */
+
+#if !HAVE_ISFINITE
+static av_always_inline av_const int avpriv_isfinitef(float x)
+{
+    uint32_t v = av_float2int(x);
+    return (v & 0x7f800000) != 0x7f800000;
+}
+
+static av_always_inline av_const int avpriv_isfinite(double x)
+{
+    uint64_t v = av_double2int(x);
+    return (v & 0x7ff0000000000000) != 0x7ff0000000000000;
+}
+
+#define isfinite(x)                  \
+    (sizeof(x) == sizeof(float)      \
+        ? avpriv_isfinitef(x)        \
+        : avpriv_isfinite(x))
+#endif /* HAVE_ISFINITE */
+
+#if !HAVE_HYPOT
+static inline av_const double hypot(double x, double y)
+{
+    double ret, temp;
+    x = fabs(x);
+    y = fabs(y);
+
+    if (isinf(x) || isinf(y))
+        return av_int2double(0x7ff0000000000000);
+    if (x == 0 || y == 0)
+        return x + y;
+    if (x < y) {
+        temp = x;
+        x = y;
+        y = temp;
+    }
+
+    y = y/x;
+    return x*sqrt(1 + y*y);
+}
+#endif /* HAVE_HYPOT */
+
+#if !HAVE_LDEXPF
+#undef ldexpf
+#define ldexpf(x, exp) ((float)ldexp(x, exp))
+#endif /* HAVE_LDEXPF */
+
+#if !HAVE_LLRINT
+#undef llrint
+#define llrint(x) ((long long)rint(x))
+#endif /* HAVE_LLRINT */
+
+#if !HAVE_LLRINTF
+#undef llrintf
+#define llrintf(x) ((long long)rint(x))
+#endif /* HAVE_LLRINT */
+
+#if !HAVE_LOG2
+#undef log2
+#define log2(x) (log(x) * 1.44269504088896340736)
+#endif /* HAVE_LOG2 */
+
+#if !HAVE_LOG2F
+#undef log2f
+#define log2f(x) ((float)log2(x))
+#endif /* HAVE_LOG2F */
+
+#if !HAVE_LOG10F
+#undef log10f
+#define log10f(x) ((float)log10(x))
+#endif /* HAVE_LOG10F */
+
+#if !HAVE_SINF
+#undef sinf
+#define sinf(x) ((float)sin(x))
+#endif /* HAVE_SINF */
+
+#if !HAVE_RINT
+static inline double rint(double x)
+{
+    return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5);
+}
+#endif /* HAVE_RINT */
+
+#if !HAVE_LRINT
+static av_always_inline av_const long int lrint(double x)
+{
+    return rint(x);
+}
+#endif /* HAVE_LRINT */
+
+#if !HAVE_LRINTF
+static av_always_inline av_const long int lrintf(float x)
+{
+    return (int)(rint(x));
+}
+#endif /* HAVE_LRINTF */
+
+#if !HAVE_ROUND
+static av_always_inline av_const double round(double x)
+{
+    return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
+}
+#endif /* HAVE_ROUND */
+
+#if !HAVE_ROUNDF
+static av_always_inline av_const float roundf(float x)
+{
+    return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
+}
+#endif /* HAVE_ROUNDF */
+
+#if !HAVE_TRUNC
+static av_always_inline av_const double trunc(double x)
+{
+    return (x > 0) ? floor(x) : ceil(x);
+}
+#endif /* HAVE_TRUNC */
+
+#if !HAVE_TRUNCF
+static av_always_inline av_const float truncf(float x)
+{
+    return (x > 0) ? floor(x) : ceil(x);
+}
+#endif /* HAVE_TRUNCF */
+
+#endif /* AVUTIL_LIBM_H */
diff --git a/media/ffvpx/libavutil/lls.c b/media/ffvpx/libavutil/lls.c
new file mode 100644
index 0000000000..0560b6a79c
--- /dev/null
+++ b/media/ffvpx/libavutil/lls.c
@@ -0,0 +1,123 @@
+/*
+ * linear least squares model
+ *
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * linear least squares model
+ */
+
+#include <math.h>
+#include <string.h>
+
+#include "attributes.h"
+#include "internal.h"
+#include "version.h"
+#include "lls.h"
+
+static void update_lls(LLSModel *m, const double *var)
+{
+    int i, j;
+
+    for (i = 0; i <= m->indep_count; i++) {
+        for (j = i; j <= m->indep_count; j++) {
+            m->covariance[i][j] += var[i] * var[j];
+        }
+    }
+}
+
+void avpriv_solve_lls(LLSModel *m, double threshold, unsigned short min_order)
+{
+    int i, j, k;
+    double (*factor)[MAX_VARS_ALIGN] = (void *) &m->covariance[1][0];
+    double (*covar) [MAX_VARS_ALIGN] = (void *) &m->covariance[1][1];
+    double *covar_y                = m->covariance[0];
+    int count                      = m->indep_count;
+
+    for (i = 0; i < count; i++) {
+        for (j = i; j < count; j++) {
+            double sum = covar[i][j];
+
+            for (k = 0; k <= i-1; k++)
+                sum -= factor[i][k] * factor[j][k];
+
+            if (i == j) {
+                if (sum < threshold)
+                    sum = 1.0;
+                factor[i][i] = sqrt(sum);
+            } else {
+                factor[j][i] = sum / factor[i][i];
+            }
+        }
+    }
+
+    for (i = 0; i < count; i++) {
+        double sum = covar_y[i + 1];
+
+        for (k = 0; k <= i-1; k++)
+            sum -= factor[i][k] * m->coeff[0][k];
+
+        m->coeff[0][i] = sum / factor[i][i];
+    }
+
+    for (j = count - 1; j >= min_order; j--) {
+        for (i = j; i >= 0; i--) {
+            double sum = m->coeff[0][i];
+
+            for (k = i + 1; k <= j; k++)
+                sum -= factor[k][i] * m->coeff[j][k];
+
+            m->coeff[j][i] = sum / factor[i][i];
+        }
+
+        m->variance[j] = covar_y[0];
+
+        for (i = 0; i <= j; i++) {
+            double sum = m->coeff[j][i] * covar[i][i] - 2 * covar_y[i + 1];
+
+            for (k = 0; k < i; k++)
+                sum += 2 * m->coeff[j][k] * covar[k][i];
+
+            m->variance[j] += m->coeff[j][i] * sum;
+        }
+    }
+}
+
+static double evaluate_lls(LLSModel *m, const double *param, int order)
+{
+    int i;
+    double out = 0;
+
+    for (i = 0; i <= order; i++)
+        out += param[i] * m->coeff[order][i];
+
+    return out;
+}
+
+av_cold void avpriv_init_lls(LLSModel *m, int indep_count)
+{
+    memset(m, 0, sizeof(LLSModel));
+    m->indep_count = indep_count;
+    m->update_lls = update_lls;
+    m->evaluate_lls = evaluate_lls;
+    if (ARCH_X86)
+        ff_init_lls_x86(m);
+}
diff --git a/media/ffvpx/libavutil/lls.h b/media/ffvpx/libavutil/lls.h
new file mode 100644
index 0000000000..1a276d537d
--- /dev/null
+++ b/media/ffvpx/libavutil/lls.h
@@ -0,0 +1,64 @@
+/*
+ * linear least squares model
+ *
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_LLS_H
+#define AVUTIL_LLS_H
+
+#include "macros.h"
+#include "mem.h"
+#include "version.h"
+
+#define MAX_VARS 32
+#define MAX_VARS_ALIGN FFALIGN(MAX_VARS+1,4)
+
+//FIXME avoid direct access to LLSModel from outside
+
+/**
+ * Linear least squares model.
+ */
+typedef struct LLSModel {
+    DECLARE_ALIGNED(32, double, covariance[MAX_VARS_ALIGN][MAX_VARS_ALIGN]);
+    DECLARE_ALIGNED(32, double, coeff[MAX_VARS][MAX_VARS]);
+    double variance[MAX_VARS];
+    int indep_count;
+    /**
+     * Take the outer-product of var[] with itself, and add to the covariance matrix.
+     * @param m this context
+     * @param var training samples, starting with the value to be predicted
+     *            32-byte aligned, and any padding elements must be initialized
+     *            (i.e not denormal/nan).
+     */
+    void (*update_lls)(struct LLSModel *m, const double *var);
+    /**
+     * Inner product of var[] and the LPC coefs.
+     * @param m this context
+     * @param var training samples, excluding the value to be predicted. unaligned.
+     * @param order lpc order
+     */
+    double (*evaluate_lls)(struct LLSModel *m, const double *var, int order);
+} LLSModel;
+
+void avpriv_init_lls(LLSModel *m, int indep_count);
+void ff_init_lls_x86(LLSModel *m);
+void avpriv_solve_lls(LLSModel *m, double threshold, unsigned short min_order);
+
+#endif /* AVUTIL_LLS_H */
diff --git a/media/ffvpx/libavutil/log.c b/media/ffvpx/libavutil/log.c
new file mode 100644
index 0000000000..93a156b8e4
--- /dev/null
+++ b/media/ffvpx/libavutil/log.c
@@ -0,0 +1,435 @@
+/*
+ * log functions
+ * Copyright (c) 2003 Michel Bardiaux
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * logging functions
+ */
+
+#include "config.h"
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if HAVE_IO_H
+#include <io.h>
+#endif
+#include <stdarg.h>
+#include <stdlib.h>
+#include "avutil.h"
+#include "bprint.h"
+#include "common.h"
+#include "internal.h"
+#include "log.h"
+#include "thread.h"
+
+static AVMutex mutex = AV_MUTEX_INITIALIZER;
+
+#define LINE_SZ 1024
+
+#if HAVE_VALGRIND_VALGRIND_H
+#include <valgrind/valgrind.h>
+/* this is the log level at which valgrind will output a full backtrace */
+#define BACKTRACE_LOGLEVEL AV_LOG_ERROR
+#endif
+
+static int av_log_level = AV_LOG_INFO;
+static int flags;
+
+#define NB_LEVELS 8
+#if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE
+#include <windows.h>
+static const uint8_t color[16 + AV_CLASS_CATEGORY_NB] = {
+    [AV_LOG_PANIC  /8] = 12,
+    [AV_LOG_FATAL  /8] = 12,
+    [AV_LOG_ERROR  /8] = 12,
+    [AV_LOG_WARNING/8] = 14,
+    [AV_LOG_INFO   /8] =  7,
+    [AV_LOG_VERBOSE/8] = 10,
+    [AV_LOG_DEBUG  /8] = 10,
+    [AV_LOG_TRACE  /8] = 8,
+    [16+AV_CLASS_CATEGORY_NA              ] =  7,
+    [16+AV_CLASS_CATEGORY_INPUT           ] = 13,
+    [16+AV_CLASS_CATEGORY_OUTPUT          ] =  5,
+    [16+AV_CLASS_CATEGORY_MUXER           ] = 13,
+    [16+AV_CLASS_CATEGORY_DEMUXER         ] =  5,
+    [16+AV_CLASS_CATEGORY_ENCODER         ] = 11,
+    [16+AV_CLASS_CATEGORY_DECODER         ] =  3,
+    [16+AV_CLASS_CATEGORY_FILTER          ] = 10,
+    [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] =  9,
+    [16+AV_CLASS_CATEGORY_SWSCALER        ] =  7,
+    [16+AV_CLASS_CATEGORY_SWRESAMPLER     ] =  7,
+    [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ] = 13,
+    [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT  ] = 5,
+    [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ] = 13,
+    [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT  ] = 5,
+    [16+AV_CLASS_CATEGORY_DEVICE_OUTPUT       ] = 13,
+    [16+AV_CLASS_CATEGORY_DEVICE_INPUT        ] = 5,
+};
+
+static int16_t background, attr_orig;
+static HANDLE con;
+#else
+
+static const uint32_t color[16 + AV_CLASS_CATEGORY_NB] = {
+    [AV_LOG_PANIC  /8] =  52 << 16 | 196 << 8 | 0x41,
+    [AV_LOG_FATAL  /8] = 208 <<  8 | 0x41,
+    [AV_LOG_ERROR  /8] = 196 <<  8 | 0x11,
+    [AV_LOG_WARNING/8] = 226 <<  8 | 0x03,
+    [AV_LOG_INFO   /8] = 253 <<  8 | 0x09,
+    [AV_LOG_VERBOSE/8] =  40 <<  8 | 0x02,
+    [AV_LOG_DEBUG  /8] =  34 <<  8 | 0x02,
+    [AV_LOG_TRACE  /8] =  34 <<  8 | 0x07,
+    [16+AV_CLASS_CATEGORY_NA              ] = 250 << 8 | 0x09,
+    [16+AV_CLASS_CATEGORY_INPUT           ] = 219 << 8 | 0x15,
+    [16+AV_CLASS_CATEGORY_OUTPUT          ] = 201 << 8 | 0x05,
+    [16+AV_CLASS_CATEGORY_MUXER           ] = 213 << 8 | 0x15,
+    [16+AV_CLASS_CATEGORY_DEMUXER         ] = 207 << 8 | 0x05,
+    [16+AV_CLASS_CATEGORY_ENCODER         ] =  51 << 8 | 0x16,
+    [16+AV_CLASS_CATEGORY_DECODER         ] =  39 << 8 | 0x06,
+    [16+AV_CLASS_CATEGORY_FILTER          ] = 155 << 8 | 0x12,
+    [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] = 192 << 8 | 0x14,
+    [16+AV_CLASS_CATEGORY_SWSCALER        ] = 153 << 8 | 0x14,
+    [16+AV_CLASS_CATEGORY_SWRESAMPLER     ] = 147 << 8 | 0x14,
+    [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ] = 213 << 8 | 0x15,
+    [16+AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT  ] = 207 << 8 | 0x05,
+    [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ] = 213 << 8 | 0x15,
+    [16+AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT  ] = 207 << 8 | 0x05,
+    [16+AV_CLASS_CATEGORY_DEVICE_OUTPUT       ] = 213 << 8 | 0x15,
+    [16+AV_CLASS_CATEGORY_DEVICE_INPUT        ] = 207 << 8 | 0x05,
+};
+
+#endif
+static int use_color = -1;
+
+static void check_color_terminal(void)
+{
+#if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE
+    CONSOLE_SCREEN_BUFFER_INFO con_info;
+    con = GetStdHandle(STD_ERROR_HANDLE);
+    use_color = (con != INVALID_HANDLE_VALUE) && !getenv("NO_COLOR") &&
+                !getenv("AV_LOG_FORCE_NOCOLOR");
+    if (use_color) {
+        GetConsoleScreenBufferInfo(con, &con_info);
+        attr_orig  = con_info.wAttributes;
+        background = attr_orig & 0xF0;
+    }
+#elif HAVE_ISATTY
+    char *term = getenv("TERM");
+    use_color = !getenv("NO_COLOR") && !getenv("AV_LOG_FORCE_NOCOLOR") &&
+                (getenv("TERM") && isatty(2) || getenv("AV_LOG_FORCE_COLOR"));
+    if (   getenv("AV_LOG_FORCE_256COLOR")
+        || (term && strstr(term, "256color")))
+        use_color *= 256;
+#else
+    use_color = getenv("AV_LOG_FORCE_COLOR") && !getenv("NO_COLOR") &&
+               !getenv("AV_LOG_FORCE_NOCOLOR");
+#endif
+}
+
+static void colored_fputs(int level, int tint, const char *str)
+{
+    int local_use_color;
+    if (!*str)
+        return;
+
+    if (use_color < 0)
+        check_color_terminal();
+
+    if (level == AV_LOG_INFO/8) local_use_color = 0;
+    else                        local_use_color = use_color;
+
+#if defined(_WIN32) && HAVE_SETCONSOLETEXTATTRIBUTE
+    if (local_use_color)
+        SetConsoleTextAttribute(con, background | color[level]);
+    fputs(str, stderr);
+    if (local_use_color)
+        SetConsoleTextAttribute(con, attr_orig);
+#else
+    if (local_use_color == 1) {
+        fprintf(stderr,
+                "\033[%"PRIu32";3%"PRIu32"m%s\033[0m",
+                (color[level] >> 4) & 15,
+                color[level] & 15,
+                str);
+    } else if (tint && use_color == 256) {
+        fprintf(stderr,
+                "\033[48;5;%"PRIu32"m\033[38;5;%dm%s\033[0m",
+                (color[level] >> 16) & 0xff,
+                tint,
+                str);
+    } else if (local_use_color == 256) {
+        fprintf(stderr,
+                "\033[48;5;%"PRIu32"m\033[38;5;%"PRIu32"m%s\033[0m",
+                (color[level] >> 16) & 0xff,
+                (color[level] >> 8) & 0xff,
+                str);
+    } else
+        fputs(str, stderr);
+#endif
+
+}
+
+const char *av_default_item_name(void *ptr)
+{
+    return (*(AVClass **) ptr)->class_name;
+}
+
+AVClassCategory av_default_get_category(void *ptr)
+{
+    return (*(AVClass **) ptr)->category;
+}
+
+static void sanitize(uint8_t *line){
+    while(*line){
+        if(*line < 0x08 || (*line > 0x0D && *line < 0x20))
+            *line='?';
+        line++;
+    }
+}
+
+static int get_category(void *ptr){
+    AVClass *avc = *(AVClass **) ptr;
+    if(    !avc
+        || (avc->version&0xFF)<100
+        ||  avc->version < (51 << 16 | 59 << 8)
+        ||  avc->category >= AV_CLASS_CATEGORY_NB) return AV_CLASS_CATEGORY_NA + 16;
+
+    if(avc->get_category)
+        return avc->get_category(ptr) + 16;
+
+    return avc->category + 16;
+}
+
+static const char *get_level_str(int level)
+{
+    switch (level) {
+    case AV_LOG_QUIET:
+        return "quiet";
+    case AV_LOG_DEBUG:
+        return "debug";
+    case AV_LOG_VERBOSE:
+        return "verbose";
+    case AV_LOG_INFO:
+        return "info";
+    case AV_LOG_WARNING:
+        return "warning";
+    case AV_LOG_ERROR:
+        return "error";
+    case AV_LOG_FATAL:
+        return "fatal";
+    case AV_LOG_PANIC:
+        return "panic";
+    default:
+        return "";
+    }
+}
+
+static void format_line(void *avcl, int level, const char *fmt, va_list vl,
+                        AVBPrint part[4], int *print_prefix, int type[2])
+{
+    AVClass* avc = avcl ? *(AVClass **) avcl : NULL;
+    av_bprint_init(part+0, 0, AV_BPRINT_SIZE_AUTOMATIC);
+    av_bprint_init(part+1, 0, AV_BPRINT_SIZE_AUTOMATIC);
+    av_bprint_init(part+2, 0, AV_BPRINT_SIZE_AUTOMATIC);
+    av_bprint_init(part+3, 0, 65536);
+
+    if(type) type[0] = type[1] = AV_CLASS_CATEGORY_NA + 16;
+    if (*print_prefix && avc) {
+        if (avc->parent_log_context_offset) {
+            AVClass** parent = *(AVClass ***) (((uint8_t *) avcl) +
+                                   avc->parent_log_context_offset);
+            if (parent && *parent) {
+                av_bprintf(part+0, "[%s @ %p] ",
+                         (*parent)->item_name(parent), parent);
+                if(type) type[0] = get_category(parent);
+            }
+        }
+        av_bprintf(part+1, "[%s @ %p] ",
+                 avc->item_name(avcl), avcl);
+        if(type) type[1] = get_category(avcl);
+    }
+
+    if (*print_prefix && (level > AV_LOG_QUIET) && (flags & AV_LOG_PRINT_LEVEL))
+        av_bprintf(part+2, "[%s] ", get_level_str(level));
+
+    av_vbprintf(part+3, fmt, vl);
+
+    if(*part[0].str || *part[1].str || *part[2].str || *part[3].str) {
+        char lastc = part[3].len && part[3].len <= part[3].size ? part[3].str[part[3].len - 1] : 0;
+        *print_prefix = lastc == '\n' || lastc == '\r';
+    }
+}
+
+void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl,
+                        char *line, int line_size, int *print_prefix)
+{
+    av_log_format_line2(ptr, level, fmt, vl, line, line_size, print_prefix);
+}
+
+int av_log_format_line2(void *ptr, int level, const char *fmt, va_list vl,
+                        char *line, int line_size, int *print_prefix)
+{
+    AVBPrint part[4];
+    int ret;
+
+    format_line(ptr, level, fmt, vl, part, print_prefix, NULL);
+    ret = snprintf(line, line_size, "%s%s%s%s", part[0].str, part[1].str, part[2].str, part[3].str);
+    av_bprint_finalize(part+3, NULL);
+    return ret;
+}
+
+void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
+{
+    static int print_prefix = 1;
+    static int count;
+    static char prev[LINE_SZ];
+    AVBPrint part[4];
+    char line[LINE_SZ];
+    static int is_atty;
+    int type[2];
+    unsigned tint = 0;
+
+    if (level >= 0) {
+        tint = level & 0xff00;
+        level &= 0xff;
+    }
+
+    if (level > av_log_level)
+        return;
+    ff_mutex_lock(&mutex);
+
+    format_line(ptr, level, fmt, vl, part, &print_prefix, type);
+    snprintf(line, sizeof(line), "%s%s%s%s", part[0].str, part[1].str, part[2].str, part[3].str);
+
+#if HAVE_ISATTY
+    if (!is_atty)
+        is_atty = isatty(2) ? 1 : -1;
+#endif
+
+    if (print_prefix && (flags & AV_LOG_SKIP_REPEATED) && !strcmp(line, prev) &&
+        *line && line[strlen(line) - 1] != '\r'){
+        count++;
+        if (is_atty == 1)
+            fprintf(stderr, "    Last message repeated %d times\r", count);
+        goto end;
+    }
+    if (count > 0) {
+        fprintf(stderr, "    Last message repeated %d times\n", count);
+        count = 0;
+    }
+    strcpy(prev, line);
+    sanitize(part[0].str);
+    colored_fputs(type[0], 0, part[0].str);
+    sanitize(part[1].str);
+    colored_fputs(type[1], 0, part[1].str);
+    sanitize(part[2].str);
+    colored_fputs(av_clip(level >> 3, 0, NB_LEVELS - 1), tint >> 8, part[2].str);
+    sanitize(part[3].str);
+    colored_fputs(av_clip(level >> 3, 0, NB_LEVELS - 1), tint >> 8, part[3].str);
+
+#if CONFIG_VALGRIND_BACKTRACE
+    if (level <= BACKTRACE_LOGLEVEL)
+        VALGRIND_PRINTF_BACKTRACE("%s", "");
+#endif
+end:
+    av_bprint_finalize(part+3, NULL);
+    ff_mutex_unlock(&mutex);
+}
+
+static void (*av_log_callback)(void*, int, const char*, va_list) =
+    av_log_default_callback;
+
+void av_log(void* avcl, int level, const char *fmt, ...)
+{
+    AVClass* avc = avcl ? *(AVClass **) avcl : NULL;
+    va_list vl;
+    va_start(vl, fmt);
+    if (avc && avc->version >= (50 << 16 | 15 << 8 | 2) &&
+        avc->log_level_offset_offset && level >= AV_LOG_FATAL)
+        level += *(int *) (((uint8_t *) avcl) + avc->log_level_offset_offset);
+    av_vlog(avcl, level, fmt, vl);
+    va_end(vl);
+}
+
+void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
+{
+    void (*log_callback)(void*, int, const char*, va_list) = av_log_callback;
+    if (log_callback)
+        log_callback(avcl, level, fmt, vl);
+}
+
+int av_log_get_level(void)
+{
+    return av_log_level;
+}
+
+void av_log_set_level(int level)
+{
+    av_log_level = level;
+}
+
+void av_log_set_flags(int arg)
+{
+    flags = arg;
+}
+
+int av_log_get_flags(void)
+{
+    return flags;
+}
+
+void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
+{
+    av_log_callback = callback;
+}
+
+static void missing_feature_sample(int sample, void *avc, const char *msg,
+                                   va_list argument_list)
+{
+    av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
+    av_log(avc, AV_LOG_WARNING, " is not implemented. Update your FFmpeg "
+           "version to the newest one from Git. If the problem still "
+           "occurs, it means that your file has a feature which has not "
+           "been implemented.\n");
+    if (sample)
+        av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
+               "of this file to ftp://upload.ffmpeg.org/incoming/ "
+               "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
+}
+
+void avpriv_request_sample(void *avc, const char *msg, ...)
+{
+    va_list argument_list;
+
+    va_start(argument_list, msg);
+    missing_feature_sample(1, avc, msg, argument_list);
+    va_end(argument_list);
+}
+
+void avpriv_report_missing_feature(void *avc, const char *msg, ...)
+{
+    va_list argument_list;
+
+    va_start(argument_list, msg);
+    missing_feature_sample(0, avc, msg, argument_list);
+    va_end(argument_list);
+}
diff --git a/media/ffvpx/libavutil/log.h b/media/ffvpx/libavutil/log.h
new file mode 100644
index 0000000000..d9554e609d
--- /dev/null
+++ b/media/ffvpx/libavutil/log.h
@@ -0,0 +1,362 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_LOG_H
+#define AVUTIL_LOG_H
+
+#include <stdarg.h>
+#include "avutil.h"
+#include "attributes.h"
+#include "version.h"
+
+typedef enum {
+    AV_CLASS_CATEGORY_NA = 0,
+    AV_CLASS_CATEGORY_INPUT,
+    AV_CLASS_CATEGORY_OUTPUT,
+    AV_CLASS_CATEGORY_MUXER,
+    AV_CLASS_CATEGORY_DEMUXER,
+    AV_CLASS_CATEGORY_ENCODER,
+    AV_CLASS_CATEGORY_DECODER,
+    AV_CLASS_CATEGORY_FILTER,
+    AV_CLASS_CATEGORY_BITSTREAM_FILTER,
+    AV_CLASS_CATEGORY_SWSCALER,
+    AV_CLASS_CATEGORY_SWRESAMPLER,
+    AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT = 40,
+    AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT,
+    AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT,
+    AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT,
+    AV_CLASS_CATEGORY_DEVICE_OUTPUT,
+    AV_CLASS_CATEGORY_DEVICE_INPUT,
+    AV_CLASS_CATEGORY_NB  ///< not part of ABI/API
+}AVClassCategory;
+
+#define AV_IS_INPUT_DEVICE(category) \
+    (((category) == AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT) || \
+     ((category) == AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT) || \
+     ((category) == AV_CLASS_CATEGORY_DEVICE_INPUT))
+
+#define AV_IS_OUTPUT_DEVICE(category) \
+    (((category) == AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT) || \
+     ((category) == AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT) || \
+     ((category) == AV_CLASS_CATEGORY_DEVICE_OUTPUT))
+
+struct AVOptionRanges;
+
+/**
+ * Describe the class of an AVClass context structure. That is an
+ * arbitrary struct of which the first field is a pointer to an
+ * AVClass struct (e.g. AVCodecContext, AVFormatContext etc.).
+ */
+typedef struct AVClass {
+    /**
+     * The name of the class; usually it is the same name as the
+     * context structure type to which the AVClass is associated.
+     */
+    const char* class_name;
+
+    /**
+     * A pointer to a function which returns the name of a context
+     * instance ctx associated with the class.
+     */
+    const char* (*item_name)(void* ctx);
+
+    /**
+     * a pointer to the first option specified in the class if any or NULL
+     *
+     * @see av_set_default_options()
+     */
+    const struct AVOption *option;
+
+    /**
+     * LIBAVUTIL_VERSION with which this structure was created.
+     * This is used to allow fields to be added without requiring major
+     * version bumps everywhere.
+     */
+
+    int version;
+
+    /**
+     * Offset in the structure where log_level_offset is stored.
+     * 0 means there is no such variable
+     */
+    int log_level_offset_offset;
+
+    /**
+     * Offset in the structure where a pointer to the parent context for
+     * logging is stored. For example a decoder could pass its AVCodecContext
+     * to eval as such a parent context, which an av_log() implementation
+     * could then leverage to display the parent context.
+     * The offset can be NULL.
+     */
+    int parent_log_context_offset;
+
+    /**
+     * Return next AVOptions-enabled child or NULL
+     */
+    void* (*child_next)(void *obj, void *prev);
+
+    /**
+     * Return an AVClass corresponding to the next potential
+     * AVOptions-enabled child.
+     *
+     * The difference between child_next and this is that
+     * child_next iterates over _already existing_ objects, while
+     * child_class_next iterates over _all possible_ children.
+     */
+    const struct AVClass* (*child_class_next)(const struct AVClass *prev);
+
+    /**
+     * Category used for visualization (like color)
+     * This is only set if the category is equal for all objects using this class.
+     * available since version (51 << 16 | 56 << 8 | 100)
+     */
+    AVClassCategory category;
+
+    /**
+     * Callback to return the category.
+     * available since version (51 << 16 | 59 << 8 | 100)
+     */
+    AVClassCategory (*get_category)(void* ctx);
+
+    /**
+     * Callback to return the supported/allowed ranges.
+     * available since version (52.12)
+     */
+    int (*query_ranges)(struct AVOptionRanges **, void *obj, const char *key, int flags);
+} AVClass;
+
+/**
+ * @addtogroup lavu_log
+ *
+ * @{
+ *
+ * @defgroup lavu_log_constants Logging Constants
+ *
+ * @{
+ */
+
+/**
+ * Print no output.
+ */
+#define AV_LOG_QUIET    -8
+
+/**
+ * Something went really wrong and we will crash now.
+ */
+#define AV_LOG_PANIC     0
+
+/**
+ * Something went wrong and recovery is not possible.
+ * For example, no header was found for a format which depends
+ * on headers or an illegal combination of parameters is used.
+ */
+#define AV_LOG_FATAL     8
+
+/**
+ * Something went wrong and cannot losslessly be recovered.
+ * However, not all future data is affected.
+ */
+#define AV_LOG_ERROR    16
+
+/**
+ * Something somehow does not look correct. This may or may not
+ * lead to problems. An example would be the use of '-vstrict -2'.
+ */
+#define AV_LOG_WARNING  24
+
+/**
+ * Standard information.
+ */
+#define AV_LOG_INFO     32
+
+/**
+ * Detailed information.
+ */
+#define AV_LOG_VERBOSE  40
+
+/**
+ * Stuff which is only useful for libav* developers.
+ */
+#define AV_LOG_DEBUG    48
+
+/**
+ * Extremely verbose debugging, useful for libav* development.
+ */
+#define AV_LOG_TRACE    56
+
+#define AV_LOG_MAX_OFFSET (AV_LOG_TRACE - AV_LOG_QUIET)
+
+/**
+ * @}
+ */
+
+/**
+ * Sets additional colors for extended debugging sessions.
+ * @code
+   av_log(ctx, AV_LOG_DEBUG|AV_LOG_C(134), "Message in purple\n");
+   @endcode
+ * Requires 256color terminal support. Uses outside debugging is not
+ * recommended.
+ */
+#define AV_LOG_C(x) ((x) << 8)
+
+/**
+ * Send the specified message to the log if the level is less than or equal
+ * to the current av_log_level. By default, all logging messages are sent to
+ * stderr. This behavior can be altered by setting a different logging callback
+ * function.
+ * @see av_log_set_callback
+ *
+ * @param avcl A pointer to an arbitrary struct of which the first field is a
+ *        pointer to an AVClass struct or NULL if general log.
+ * @param level The importance level of the message expressed using a @ref
+ *        lavu_log_constants "Logging Constant".
+ * @param fmt The format string (printf-compatible) that specifies how
+ *        subsequent arguments are converted to output.
+ */
+void av_log(void *avcl, int level, const char *fmt, ...) av_printf_format(3, 4);
+
+
+/**
+ * Send the specified message to the log if the level is less than or equal
+ * to the current av_log_level. By default, all logging messages are sent to
+ * stderr. This behavior can be altered by setting a different logging callback
+ * function.
+ * @see av_log_set_callback
+ *
+ * @param avcl A pointer to an arbitrary struct of which the first field is a
+ *        pointer to an AVClass struct.
+ * @param level The importance level of the message expressed using a @ref
+ *        lavu_log_constants "Logging Constant".
+ * @param fmt The format string (printf-compatible) that specifies how
+ *        subsequent arguments are converted to output.
+ * @param vl The arguments referenced by the format string.
+ */
+void av_vlog(void *avcl, int level, const char *fmt, va_list vl);
+
+/**
+ * Get the current log level
+ *
+ * @see lavu_log_constants
+ *
+ * @return Current log level
+ */
+int av_log_get_level(void);
+
+/**
+ * Set the log level
+ *
+ * @see lavu_log_constants
+ *
+ * @param level Logging level
+ */
+void av_log_set_level(int level);
+
+/**
+ * Set the logging callback
+ *
+ * @note The callback must be thread safe, even if the application does not use
+ *       threads itself as some codecs are multithreaded.
+ *
+ * @see av_log_default_callback
+ *
+ * @param callback A logging function with a compatible signature.
+ */
+void av_log_set_callback(void (*callback)(void*, int, const char*, va_list));
+
+/**
+ * Default logging callback
+ *
+ * It prints the message to stderr, optionally colorizing it.
+ *
+ * @param avcl A pointer to an arbitrary struct of which the first field is a
+ *        pointer to an AVClass struct.
+ * @param level The importance level of the message expressed using a @ref
+ *        lavu_log_constants "Logging Constant".
+ * @param fmt The format string (printf-compatible) that specifies how
+ *        subsequent arguments are converted to output.
+ * @param vl The arguments referenced by the format string.
+ */
+void av_log_default_callback(void *avcl, int level, const char *fmt,
+                             va_list vl);
+
+/**
+ * Return the context name
+ *
+ * @param  ctx The AVClass context
+ *
+ * @return The AVClass class_name
+ */
+const char* av_default_item_name(void* ctx);
+AVClassCategory av_default_get_category(void *ptr);
+
+/**
+ * Format a line of log the same way as the default callback.
+ * @param line          buffer to receive the formatted line
+ * @param line_size     size of the buffer
+ * @param print_prefix  used to store whether the prefix must be printed;
+ *                      must point to a persistent integer initially set to 1
+ */
+void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl,
+                        char *line, int line_size, int *print_prefix);
+
+/**
+ * Format a line of log the same way as the default callback.
+ * @param line          buffer to receive the formatted line;
+ *                      may be NULL if line_size is 0
+ * @param line_size     size of the buffer; at most line_size-1 characters will
+ *                      be written to the buffer, plus one null terminator
+ * @param print_prefix  used to store whether the prefix must be printed;
+ *                      must point to a persistent integer initially set to 1
+ * @return Returns a negative value if an error occurred, otherwise returns
+ *         the number of characters that would have been written for a
+ *         sufficiently large buffer, not including the terminating null
+ *         character. If the return value is not less than line_size, it means
+ *         that the log message was truncated to fit the buffer.
+ */
+int av_log_format_line2(void *ptr, int level, const char *fmt, va_list vl,
+                        char *line, int line_size, int *print_prefix);
+
+/**
+ * Skip repeated messages, this requires the user app to use av_log() instead of
+ * (f)printf as the 2 would otherwise interfere and lead to
+ * "Last message repeated x times" messages below (f)printf messages with some
+ * bad luck.
+ * Also to receive the last, "last repeated" line if any, the user app must
+ * call av_log(NULL, AV_LOG_QUIET, "%s", ""); at the end
+ */
+#define AV_LOG_SKIP_REPEATED 1
+
+/**
+ * Include the log severity in messages originating from codecs.
+ *
+ * Results in messages such as:
+ * [rawvideo @ 0xDEADBEEF] [error] encode did not produce valid pts
+ */
+#define AV_LOG_PRINT_LEVEL 2
+
+void av_log_set_flags(int arg);
+int av_log_get_flags(void);
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_LOG_H */
diff --git a/media/ffvpx/libavutil/log2_tab.c b/media/ffvpx/libavutil/log2_tab.c
new file mode 100644
index 0000000000..0dbf07d74c
--- /dev/null
+++ b/media/ffvpx/libavutil/log2_tab.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2003-2012 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+
+const uint8_t ff_log2_tab[256]={
+        0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
+        5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+        6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+        6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+        7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+        7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+        7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+        7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
+};
diff --git a/media/ffvpx/libavutil/macros.h b/media/ffvpx/libavutil/macros.h
new file mode 100644
index 0000000000..2007ee5619
--- /dev/null
+++ b/media/ffvpx/libavutil/macros.h
@@ -0,0 +1,50 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @ingroup lavu
+ * Utility Preprocessor macros
+ */
+
+#ifndef AVUTIL_MACROS_H
+#define AVUTIL_MACROS_H
+
+/**
+ * @addtogroup preproc_misc Preprocessor String Macros
+ *
+ * String manipulation macros
+ *
+ * @{
+ */
+
+#define AV_STRINGIFY(s)         AV_TOSTRING(s)
+#define AV_TOSTRING(s) #s
+
+#define AV_GLUE(a, b) a ## b
+#define AV_JOIN(a, b) AV_GLUE(a, b)
+
+/**
+ * @}
+ */
+
+#define AV_PRAGMA(s) _Pragma(#s)
+
+#define FFALIGN(x, a) (((x)+(a)-1)&~((a)-1))
+
+#endif /* AVUTIL_MACROS_H */
diff --git a/media/ffvpx/libavutil/mathematics.c b/media/ffvpx/libavutil/mathematics.c
new file mode 100644
index 0000000000..1bf044cdf1
--- /dev/null
+++ b/media/ffvpx/libavutil/mathematics.c
@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2005-2012 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * miscellaneous math routines and tables
+ */
+
+#include <stdint.h>
+#include <limits.h>
+
+#include "mathematics.h"
+#include "libavutil/intmath.h"
+#include "libavutil/common.h"
+#include "avassert.h"
+#include "version.h"
+
+/* Stein's binary GCD algorithm:
+ * https://en.wikipedia.org/wiki/Binary_GCD_algorithm */
+int64_t av_gcd(int64_t a, int64_t b) {
+    int za, zb, k;
+    int64_t u, v;
+    if (a == 0)
+        return b;
+    if (b == 0)
+        return a;
+    za = ff_ctzll(a);
+    zb = ff_ctzll(b);
+    k  = FFMIN(za, zb);
+    u = llabs(a >> za);
+    v = llabs(b >> zb);
+    while (u != v) {
+        if (u > v)
+            FFSWAP(int64_t, v, u);
+        v -= u;
+        v >>= ff_ctzll(v);
+    }
+    return (uint64_t)u << k;
+}
+
+int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
+{
+    int64_t r = 0;
+    av_assert2(c > 0);
+    av_assert2(b >=0);
+    av_assert2((unsigned)(rnd&~AV_ROUND_PASS_MINMAX)<=5 && (rnd&~AV_ROUND_PASS_MINMAX)!=4);
+
+    if (c <= 0 || b < 0 || !((unsigned)(rnd&~AV_ROUND_PASS_MINMAX)<=5 && (rnd&~AV_ROUND_PASS_MINMAX)!=4))
+        return INT64_MIN;
+
+    if (rnd & AV_ROUND_PASS_MINMAX) {
+        if (a == INT64_MIN || a == INT64_MAX)
+            return a;
+        rnd -= AV_ROUND_PASS_MINMAX;
+    }
+
+    if (a < 0)
+        return -(uint64_t)av_rescale_rnd(-FFMAX(a, -INT64_MAX), b, c, rnd ^ ((rnd >> 1) & 1));
+
+    if (rnd == AV_ROUND_NEAR_INF)
+        r = c / 2;
+    else if (rnd & 1)
+        r = c - 1;
+
+    if (b <= INT_MAX && c <= INT_MAX) {
+        if (a <= INT_MAX)
+            return (a * b + r) / c;
+        else {
+            int64_t ad = a / c;
+            int64_t a2 = (a % c * b + r) / c;
+            if (ad >= INT32_MAX && b && ad > (INT64_MAX - a2) / b)
+                return INT64_MIN;
+            return ad * b + a2;
+        }
+    } else {
+#if 1
+        uint64_t a0  = a & 0xFFFFFFFF;
+        uint64_t a1  = a >> 32;
+        uint64_t b0  = b & 0xFFFFFFFF;
+        uint64_t b1  = b >> 32;
+        uint64_t t1  = a0 * b1 + a1 * b0;
+        uint64_t t1a = t1 << 32;
+        int i;
+
+        a0  = a0 * b0 + t1a;
+        a1  = a1 * b1 + (t1 >> 32) + (a0 < t1a);
+        a0 += r;
+        a1 += a0 < r;
+
+        for (i = 63; i >= 0; i--) {
+            a1 += a1 + ((a0 >> i) & 1);
+            t1 += t1;
+            if (c <= a1) {
+                a1 -= c;
+                t1++;
+            }
+        }
+        if (t1 > INT64_MAX)
+            return INT64_MIN;
+        return t1;
+#else
+        /* reference code doing (a*b + r) / c, requires libavutil/integer.h */
+        AVInteger ai;
+        ai = av_mul_i(av_int2i(a), av_int2i(b));
+        ai = av_add_i(ai, av_int2i(r));
+
+        return av_i2int(av_div_i(ai, av_int2i(c)));
+#endif
+    }
+}
+
+int64_t av_rescale(int64_t a, int64_t b, int64_t c)
+{
+    return av_rescale_rnd(a, b, c, AV_ROUND_NEAR_INF);
+}
+
+int64_t av_rescale_q_rnd(int64_t a, AVRational bq, AVRational cq,
+                         enum AVRounding rnd)
+{
+    int64_t b = bq.num * (int64_t)cq.den;
+    int64_t c = cq.num * (int64_t)bq.den;
+    return av_rescale_rnd(a, b, c, rnd);
+}
+
+int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
+{
+    return av_rescale_q_rnd(a, bq, cq, AV_ROUND_NEAR_INF);
+}
+
+int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
+{
+    int64_t a = tb_a.num * (int64_t)tb_b.den;
+    int64_t b = tb_b.num * (int64_t)tb_a.den;
+    if ((FFABS(ts_a)|a|FFABS(ts_b)|b) <= INT_MAX)
+        return (ts_a*a > ts_b*b) - (ts_a*a < ts_b*b);
+    if (av_rescale_rnd(ts_a, a, b, AV_ROUND_DOWN) < ts_b)
+        return -1;
+    if (av_rescale_rnd(ts_b, b, a, AV_ROUND_DOWN) < ts_a)
+        return 1;
+    return 0;
+}
+
+int64_t av_compare_mod(uint64_t a, uint64_t b, uint64_t mod)
+{
+    int64_t c = (a - b) & (mod - 1);
+    if (c > (mod >> 1))
+        c -= mod;
+    return c;
+}
+
+int64_t av_rescale_delta(AVRational in_tb, int64_t in_ts,  AVRational fs_tb, int duration, int64_t *last, AVRational out_tb){
+    int64_t a, b, this;
+
+    av_assert0(in_ts != AV_NOPTS_VALUE);
+    av_assert0(duration >= 0);
+
+    if (*last == AV_NOPTS_VALUE || !duration || in_tb.num*(int64_t)out_tb.den <= out_tb.num*(int64_t)in_tb.den) {
+simple_round:
+        *last = av_rescale_q(in_ts, in_tb, fs_tb) + duration;
+        return av_rescale_q(in_ts, in_tb, out_tb);
+    }
+
+    a =  av_rescale_q_rnd(2*in_ts-1, in_tb, fs_tb, AV_ROUND_DOWN)   >>1;
+    b = (av_rescale_q_rnd(2*in_ts+1, in_tb, fs_tb, AV_ROUND_UP  )+1)>>1;
+    if (*last < 2*a - b || *last > 2*b - a)
+        goto simple_round;
+
+    this = av_clip64(*last, a, b);
+    *last = this + duration;
+
+    return av_rescale_q(this, fs_tb, out_tb);
+}
+
+int64_t av_add_stable(AVRational ts_tb, int64_t ts, AVRational inc_tb, int64_t inc)
+{
+    int64_t m, d;
+
+    if (inc != 1)
+        inc_tb = av_mul_q(inc_tb, (AVRational) {inc, 1});
+
+    m = inc_tb.num * (int64_t)ts_tb.den;
+    d = inc_tb.den * (int64_t)ts_tb.num;
+
+    if (m % d == 0)
+        return ts + m / d;
+    if (m < d)
+        return ts;
+
+    {
+        int64_t old = av_rescale_q(ts, ts_tb, inc_tb);
+        int64_t old_ts = av_rescale_q(old, inc_tb, ts_tb);
+        return av_rescale_q(old + 1, inc_tb, ts_tb) + (ts - old_ts);
+    }
+}
diff --git a/media/ffvpx/libavutil/mathematics.h b/media/ffvpx/libavutil/mathematics.h
new file mode 100644
index 0000000000..54901800ba
--- /dev/null
+++ b/media/ffvpx/libavutil/mathematics.h
@@ -0,0 +1,242 @@
+/*
+ * copyright (c) 2005-2012 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @addtogroup lavu_math
+ * Mathematical utilities for working with timestamp and time base.
+ */
+
+#ifndef AVUTIL_MATHEMATICS_H
+#define AVUTIL_MATHEMATICS_H
+
+#include <stdint.h>
+#include <math.h>
+#include "attributes.h"
+#include "rational.h"
+#include "intfloat.h"
+
+#ifndef M_E
+#define M_E            2.7182818284590452354   /* e */
+#endif
+#ifndef M_LN2
+#define M_LN2          0.69314718055994530942  /* log_e 2 */
+#endif
+#ifndef M_LN10
+#define M_LN10         2.30258509299404568402  /* log_e 10 */
+#endif
+#ifndef M_LOG2_10
+#define M_LOG2_10      3.32192809488736234787  /* log_2 10 */
+#endif
+#ifndef M_PHI
+#define M_PHI          1.61803398874989484820   /* phi / golden ratio */
+#endif
+#ifndef M_PI
+#define M_PI           3.14159265358979323846  /* pi */
+#endif
+#ifndef M_PI_2
+#define M_PI_2         1.57079632679489661923  /* pi/2 */
+#endif
+#ifndef M_SQRT1_2
+#define M_SQRT1_2      0.70710678118654752440  /* 1/sqrt(2) */
+#endif
+#ifndef M_SQRT2
+#define M_SQRT2        1.41421356237309504880  /* sqrt(2) */
+#endif
+#ifndef NAN
+#define NAN            av_int2float(0x7fc00000)
+#endif
+#ifndef INFINITY
+#define INFINITY       av_int2float(0x7f800000)
+#endif
+
+/**
+ * @addtogroup lavu_math
+ *
+ * @{
+ */
+
+/**
+ * Rounding methods.
+ */
+enum AVRounding {
+    AV_ROUND_ZERO     = 0, ///< Round toward zero.
+    AV_ROUND_INF      = 1, ///< Round away from zero.
+    AV_ROUND_DOWN     = 2, ///< Round toward -infinity.
+    AV_ROUND_UP       = 3, ///< Round toward +infinity.
+    AV_ROUND_NEAR_INF = 5, ///< Round to nearest and halfway cases away from zero.
+    /**
+     * Flag telling rescaling functions to pass `INT64_MIN`/`MAX` through
+     * unchanged, avoiding special cases for #AV_NOPTS_VALUE.
+     *
+     * Unlike other values of the enumeration AVRounding, this value is a
+     * bitmask that must be used in conjunction with another value of the
+     * enumeration through a bitwise OR, in order to set behavior for normal
+     * cases.
+     *
+     * @code{.c}
+     * av_rescale_rnd(3, 1, 2, AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
+     * // Rescaling 3:
+     * //     Calculating 3 * 1 / 2
+     * //     3 / 2 is rounded up to 2
+     * //     => 2
+     *
+     * av_rescale_rnd(AV_NOPTS_VALUE, 1, 2, AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
+     * // Rescaling AV_NOPTS_VALUE:
+     * //     AV_NOPTS_VALUE == INT64_MIN
+     * //     AV_NOPTS_VALUE is passed through
+     * //     => AV_NOPTS_VALUE
+     * @endcode
+     */
+    AV_ROUND_PASS_MINMAX = 8192,
+};
+
+/**
+ * Compute the greatest common divisor of two integer operands.
+ *
+ * @param a,b Operands
+ * @return GCD of a and b up to sign; if a >= 0 and b >= 0, return value is >= 0;
+ * if a == 0 and b == 0, returns 0.
+ */
+int64_t av_const av_gcd(int64_t a, int64_t b);
+
+/**
+ * Rescale a 64-bit integer with rounding to nearest.
+ *
+ * The operation is mathematically equivalent to `a * b / c`, but writing that
+ * directly can overflow.
+ *
+ * This function is equivalent to av_rescale_rnd() with #AV_ROUND_NEAR_INF.
+ *
+ * @see av_rescale_rnd(), av_rescale_q(), av_rescale_q_rnd()
+ */
+int64_t av_rescale(int64_t a, int64_t b, int64_t c) av_const;
+
+/**
+ * Rescale a 64-bit integer with specified rounding.
+ *
+ * The operation is mathematically equivalent to `a * b / c`, but writing that
+ * directly can overflow, and does not support different rounding methods.
+ *
+ * @see av_rescale(), av_rescale_q(), av_rescale_q_rnd()
+ */
+int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd) av_const;
+
+/**
+ * Rescale a 64-bit integer by 2 rational numbers.
+ *
+ * The operation is mathematically equivalent to `a * bq / cq`.
+ *
+ * This function is equivalent to av_rescale_q_rnd() with #AV_ROUND_NEAR_INF.
+ *
+ * @see av_rescale(), av_rescale_rnd(), av_rescale_q_rnd()
+ */
+int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq) av_const;
+
+/**
+ * Rescale a 64-bit integer by 2 rational numbers with specified rounding.
+ *
+ * The operation is mathematically equivalent to `a * bq / cq`.
+ *
+ * @see av_rescale(), av_rescale_rnd(), av_rescale_q()
+ */
+int64_t av_rescale_q_rnd(int64_t a, AVRational bq, AVRational cq,
+                         enum AVRounding rnd) av_const;
+
+/**
+ * Compare two timestamps each in its own time base.
+ *
+ * @return One of the following values:
+ *         - -1 if `ts_a` is before `ts_b`
+ *         - 1 if `ts_a` is after `ts_b`
+ *         - 0 if they represent the same position
+ *
+ * @warning
+ * The result of the function is undefined if one of the timestamps is outside
+ * the `int64_t` range when represented in the other's timebase.
+ */
+int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b);
+
+/**
+ * Compare the remainders of two integer operands divided by a common divisor.
+ *
+ * In other words, compare the least significant `log2(mod)` bits of integers
+ * `a` and `b`.
+ *
+ * @code{.c}
+ * av_compare_mod(0x11, 0x02, 0x10) < 0 // since 0x11 % 0x10  (0x1) < 0x02 % 0x10  (0x2)
+ * av_compare_mod(0x11, 0x02, 0x20) > 0 // since 0x11 % 0x20 (0x11) > 0x02 % 0x20 (0x02)
+ * @endcode
+ *
+ * @param a,b Operands
+ * @param mod Divisor; must be a power of 2
+ * @return
+ *         - a negative value if `a % mod < b % mod`
+ *         - a positive value if `a % mod > b % mod`
+ *         - zero             if `a % mod == b % mod`
+ */
+int64_t av_compare_mod(uint64_t a, uint64_t b, uint64_t mod);
+
+/**
+ * Rescale a timestamp while preserving known durations.
+ *
+ * This function is designed to be called per audio packet to scale the input
+ * timestamp to a different time base. Compared to a simple av_rescale_q()
+ * call, this function is robust against possible inconsistent frame durations.
+ *
+ * The `last` parameter is a state variable that must be preserved for all
+ * subsequent calls for the same stream. For the first call, `*last` should be
+ * initialized to #AV_NOPTS_VALUE.
+ *
+ * @param[in]     in_tb    Input time base
+ * @param[in]     in_ts    Input timestamp
+ * @param[in]     fs_tb    Duration time base; typically this is finer-grained
+ *                         (greater) than `in_tb` and `out_tb`
+ * @param[in]     duration Duration till the next call to this function (i.e.
+ *                         duration of the current packet/frame)
+ * @param[in,out] last     Pointer to a timestamp expressed in terms of
+ *                         `fs_tb`, acting as a state variable
+ * @param[in]     out_tb   Output timebase
+ * @return        Timestamp expressed in terms of `out_tb`
+ *
+ * @note In the context of this function, "duration" is in term of samples, not
+ *       seconds.
+ */
+int64_t av_rescale_delta(AVRational in_tb, int64_t in_ts,  AVRational fs_tb, int duration, int64_t *last, AVRational out_tb);
+
+/**
+ * Add a value to a timestamp.
+ *
+ * This function guarantees that when the same value is repeatly added that
+ * no accumulation of rounding errors occurs.
+ *
+ * @param[in] ts     Input timestamp
+ * @param[in] ts_tb  Input timestamp time base
+ * @param[in] inc    Value to be added
+ * @param[in] inc_tb Time base of `inc`
+ */
+int64_t av_add_stable(AVRational ts_tb, int64_t ts, AVRational inc_tb, int64_t inc);
+
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_MATHEMATICS_H */
diff --git a/media/ffvpx/libavutil/mem.c b/media/ffvpx/libavutil/mem.c
new file mode 100644
index 0000000000..88fe09b179
--- /dev/null
+++ b/media/ffvpx/libavutil/mem.c
@@ -0,0 +1,508 @@
+/*
+ * default memory allocator for libavutil
+ * Copyright (c) 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * default memory allocator for libavutil
+ */
+
+#define _XOPEN_SOURCE 600
+
+#include "config.h"
+
+#include <limits.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#if HAVE_MALLOC_H
+#include <malloc.h>
+#endif
+
+#include "avassert.h"
+#include "avutil.h"
+#include "common.h"
+#include "dynarray.h"
+#include "intreadwrite.h"
+#include "mem.h"
+
+#ifdef MALLOC_PREFIX
+
+#define malloc         AV_JOIN(MALLOC_PREFIX, malloc)
+#define memalign       AV_JOIN(MALLOC_PREFIX, memalign)
+#define posix_memalign AV_JOIN(MALLOC_PREFIX, posix_memalign)
+#define realloc        AV_JOIN(MALLOC_PREFIX, realloc)
+#define free           AV_JOIN(MALLOC_PREFIX, free)
+
+void *malloc(size_t size);
+void *memalign(size_t align, size_t size);
+int   posix_memalign(void **ptr, size_t align, size_t size);
+void *realloc(void *ptr, size_t size);
+void  free(void *ptr);
+
+#endif /* MALLOC_PREFIX */
+
+#include "mem_internal.h"
+
+#define ALIGN (HAVE_AVX512 ? 64 : (HAVE_AVX ? 32 : 16))
+
+/* NOTE: if you want to override these functions with your own
+ * implementations (not recommended) you have to link libav* as
+ * dynamic libraries and remove -Wl,-Bsymbolic from the linker flags.
+ * Note that this will cost performance. */
+
+static size_t max_alloc_size= INT_MAX;
+
+void av_max_alloc(size_t max){
+    max_alloc_size = max;
+}
+
+void *av_malloc(size_t size)
+{
+    void *ptr = NULL;
+
+    /* let's disallow possibly ambiguous cases */
+    if (size > (max_alloc_size - 32))
+        return NULL;
+
+#if HAVE_POSIX_MEMALIGN
+    if (size) //OS X on SDK 10.6 has a broken posix_memalign implementation
+    if (posix_memalign(&ptr, ALIGN, size))
+        ptr = NULL;
+#elif HAVE_ALIGNED_MALLOC
+    ptr = _aligned_malloc(size, ALIGN);
+#elif HAVE_MEMALIGN
+#ifndef __DJGPP__
+    ptr = memalign(ALIGN, size);
+#else
+    ptr = memalign(size, ALIGN);
+#endif
+    /* Why 64?
+     * Indeed, we should align it:
+     *   on  4 for 386
+     *   on 16 for 486
+     *   on 32 for 586, PPro - K6-III
+     *   on 64 for K7 (maybe for P3 too).
+     * Because L1 and L2 caches are aligned on those values.
+     * But I don't want to code such logic here!
+     */
+    /* Why 32?
+     * For AVX ASM. SSE / NEON needs only 16.
+     * Why not larger? Because I did not see a difference in benchmarks ...
+     */
+    /* benchmarks with P3
+     * memalign(64) + 1          3071, 3051, 3032
+     * memalign(64) + 2          3051, 3032, 3041
+     * memalign(64) + 4          2911, 2896, 2915
+     * memalign(64) + 8          2545, 2554, 2550
+     * memalign(64) + 16         2543, 2572, 2563
+     * memalign(64) + 32         2546, 2545, 2571
+     * memalign(64) + 64         2570, 2533, 2558
+     *
+     * BTW, malloc seems to do 8-byte alignment by default here.
+     */
+#else
+    ptr = malloc(size);
+#endif
+    if(!ptr && !size) {
+        size = 1;
+        ptr= av_malloc(1);
+    }
+#if CONFIG_MEMORY_POISONING
+    if (ptr)
+        memset(ptr, FF_MEMORY_POISON, size);
+#endif
+    return ptr;
+}
+
+void *av_realloc(void *ptr, size_t size)
+{
+    /* let's disallow possibly ambiguous cases */
+    if (size > (max_alloc_size - 32))
+        return NULL;
+
+#if HAVE_ALIGNED_MALLOC
+    return _aligned_realloc(ptr, size + !size, ALIGN);
+#else
+    return realloc(ptr, size + !size);
+#endif
+}
+
+void *av_realloc_f(void *ptr, size_t nelem, size_t elsize)
+{
+    size_t size;
+    void *r;
+
+    if (av_size_mult(elsize, nelem, &size)) {
+        av_free(ptr);
+        return NULL;
+    }
+    r = av_realloc(ptr, size);
+    if (!r)
+        av_free(ptr);
+    return r;
+}
+
+int av_reallocp(void *ptr, size_t size)
+{
+    void *val;
+
+    if (!size) {
+        av_freep(ptr);
+        return 0;
+    }
+
+    memcpy(&val, ptr, sizeof(val));
+    val = av_realloc(val, size);
+
+    if (!val) {
+        av_freep(ptr);
+        return AVERROR(ENOMEM);
+    }
+
+    memcpy(ptr, &val, sizeof(val));
+    return 0;
+}
+
+void *av_malloc_array(size_t nmemb, size_t size)
+{
+    if (!size || nmemb >= INT_MAX / size)
+        return NULL;
+    return av_malloc(nmemb * size);
+}
+
+void *av_mallocz_array(size_t nmemb, size_t size)
+{
+    if (!size || nmemb >= INT_MAX / size)
+        return NULL;
+    return av_mallocz(nmemb * size);
+}
+
+void *av_realloc_array(void *ptr, size_t nmemb, size_t size)
+{
+    if (!size || nmemb >= INT_MAX / size)
+        return NULL;
+    return av_realloc(ptr, nmemb * size);
+}
+
+int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
+{
+    void *val;
+
+    memcpy(&val, ptr, sizeof(val));
+    val = av_realloc_f(val, nmemb, size);
+    memcpy(ptr, &val, sizeof(val));
+    if (!val && nmemb && size)
+        return AVERROR(ENOMEM);
+
+    return 0;
+}
+
+void av_free(void *ptr)
+{
+#if HAVE_ALIGNED_MALLOC
+    _aligned_free(ptr);
+#else
+    free(ptr);
+#endif
+}
+
+void av_freep(void *arg)
+{
+    void *val;
+
+    memcpy(&val, arg, sizeof(val));
+    memcpy(arg, &(void *){ NULL }, sizeof(val));
+    av_free(val);
+}
+
+void *av_mallocz(size_t size)
+{
+    void *ptr = av_malloc(size);
+    if (ptr)
+        memset(ptr, 0, size);
+    return ptr;
+}
+
+void *av_calloc(size_t nmemb, size_t size)
+{
+    if (size <= 0 || nmemb >= INT_MAX / size)
+        return NULL;
+    return av_mallocz(nmemb * size);
+}
+
+char *av_strdup(const char *s)
+{
+    char *ptr = NULL;
+    if (s) {
+        size_t len = strlen(s) + 1;
+        ptr = av_realloc(NULL, len);
+        if (ptr)
+            memcpy(ptr, s, len);
+    }
+    return ptr;
+}
+
+char *av_strndup(const char *s, size_t len)
+{
+    char *ret = NULL, *end;
+
+    if (!s)
+        return NULL;
+
+    end = memchr(s, 0, len);
+    if (end)
+        len = end - s;
+
+    ret = av_realloc(NULL, len + 1);
+    if (!ret)
+        return NULL;
+
+    memcpy(ret, s, len);
+    ret[len] = 0;
+    return ret;
+}
+
+void *av_memdup(const void *p, size_t size)
+{
+    void *ptr = NULL;
+    if (p) {
+        ptr = av_malloc(size);
+        if (ptr)
+            memcpy(ptr, p, size);
+    }
+    return ptr;
+}
+
+int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem)
+{
+    void **tab;
+    memcpy(&tab, tab_ptr, sizeof(tab));
+
+    FF_DYNARRAY_ADD(INT_MAX, sizeof(*tab), tab, *nb_ptr, {
+        tab[*nb_ptr] = elem;
+        memcpy(tab_ptr, &tab, sizeof(tab));
+    }, {
+        return AVERROR(ENOMEM);
+    });
+    return 0;
+}
+
+void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem)
+{
+    void **tab;
+    memcpy(&tab, tab_ptr, sizeof(tab));
+
+    FF_DYNARRAY_ADD(INT_MAX, sizeof(*tab), tab, *nb_ptr, {
+        tab[*nb_ptr] = elem;
+        memcpy(tab_ptr, &tab, sizeof(tab));
+    }, {
+        *nb_ptr = 0;
+        av_freep(tab_ptr);
+    });
+}
+
+void *av_dynarray2_add(void **tab_ptr, int *nb_ptr, size_t elem_size,
+                       const uint8_t *elem_data)
+{
+    uint8_t *tab_elem_data = NULL;
+
+    FF_DYNARRAY_ADD(INT_MAX, elem_size, *tab_ptr, *nb_ptr, {
+        tab_elem_data = (uint8_t *)*tab_ptr + (*nb_ptr) * elem_size;
+        if (elem_data)
+            memcpy(tab_elem_data, elem_data, elem_size);
+        else if (CONFIG_MEMORY_POISONING)
+            memset(tab_elem_data, FF_MEMORY_POISON, elem_size);
+    }, {
+        av_freep(tab_ptr);
+        *nb_ptr = 0;
+    });
+    return tab_elem_data;
+}
+
+static void fill16(uint8_t *dst, int len)
+{
+    uint32_t v = AV_RN16(dst - 2);
+
+    v |= v << 16;
+
+    while (len >= 4) {
+        AV_WN32(dst, v);
+        dst += 4;
+        len -= 4;
+    }
+
+    while (len--) {
+        *dst = dst[-2];
+        dst++;
+    }
+}
+
+static void fill24(uint8_t *dst, int len)
+{
+#if HAVE_BIGENDIAN
+    uint32_t v = AV_RB24(dst - 3);
+    uint32_t a = v << 8  | v >> 16;
+    uint32_t b = v << 16 | v >> 8;
+    uint32_t c = v << 24 | v;
+#else
+    uint32_t v = AV_RL24(dst - 3);
+    uint32_t a = v       | v << 24;
+    uint32_t b = v >> 8  | v << 16;
+    uint32_t c = v >> 16 | v << 8;
+#endif
+
+    while (len >= 12) {
+        AV_WN32(dst,     a);
+        AV_WN32(dst + 4, b);
+        AV_WN32(dst + 8, c);
+        dst += 12;
+        len -= 12;
+    }
+
+    if (len >= 4) {
+        AV_WN32(dst, a);
+        dst += 4;
+        len -= 4;
+    }
+
+    if (len >= 4) {
+        AV_WN32(dst, b);
+        dst += 4;
+        len -= 4;
+    }
+
+    while (len--) {
+        *dst = dst[-3];
+        dst++;
+    }
+}
+
+static void fill32(uint8_t *dst, int len)
+{
+    uint32_t v = AV_RN32(dst - 4);
+
+#if HAVE_FAST_64BIT
+    uint64_t v2= v + ((uint64_t)v<<32);
+    while (len >= 32) {
+        AV_WN64(dst   , v2);
+        AV_WN64(dst+ 8, v2);
+        AV_WN64(dst+16, v2);
+        AV_WN64(dst+24, v2);
+        dst += 32;
+        len -= 32;
+    }
+#endif
+
+    while (len >= 4) {
+        AV_WN32(dst, v);
+        dst += 4;
+        len -= 4;
+    }
+
+    while (len--) {
+        *dst = dst[-4];
+        dst++;
+    }
+}
+
+void av_memcpy_backptr(uint8_t *dst, int back, int cnt)
+{
+    const uint8_t *src = &dst[-back];
+    if (!back)
+        return;
+
+    if (back == 1) {
+        memset(dst, *src, cnt);
+    } else if (back == 2) {
+        fill16(dst, cnt);
+    } else if (back == 3) {
+        fill24(dst, cnt);
+    } else if (back == 4) {
+        fill32(dst, cnt);
+    } else {
+        if (cnt >= 16) {
+            int blocklen = back;
+            while (cnt > blocklen) {
+                memcpy(dst, src, blocklen);
+                dst       += blocklen;
+                cnt       -= blocklen;
+                blocklen <<= 1;
+            }
+            memcpy(dst, src, cnt);
+            return;
+        }
+        if (cnt >= 8) {
+            AV_COPY32U(dst,     src);
+            AV_COPY32U(dst + 4, src + 4);
+            src += 8;
+            dst += 8;
+            cnt -= 8;
+        }
+        if (cnt >= 4) {
+            AV_COPY32U(dst, src);
+            src += 4;
+            dst += 4;
+            cnt -= 4;
+        }
+        if (cnt >= 2) {
+            AV_COPY16U(dst, src);
+            src += 2;
+            dst += 2;
+            cnt -= 2;
+        }
+        if (cnt)
+            *dst = *src;
+    }
+}
+
+void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
+{
+    if (min_size <= *size)
+        return ptr;
+
+    if (min_size > max_alloc_size - 32) {
+        *size = 0;
+        return NULL;
+    }
+
+    min_size = FFMIN(max_alloc_size - 32, FFMAX(min_size + min_size / 16 + 32, min_size));
+
+    ptr = av_realloc(ptr, min_size);
+    /* we could set this to the unmodified min_size but this is safer
+     * if the user lost the ptr and uses NULL now
+     */
+    if (!ptr)
+        min_size = 0;
+
+    *size = min_size;
+
+    return ptr;
+}
+
+void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
+{
+    ff_fast_malloc(ptr, size, min_size, 0);
+}
+
+void av_fast_mallocz(void *ptr, unsigned int *size, size_t min_size)
+{
+    ff_fast_malloc(ptr, size, min_size, 1);
+}
diff --git a/media/ffvpx/libavutil/mem.h b/media/ffvpx/libavutil/mem.h
new file mode 100644
index 0000000000..5fb1a02dd9
--- /dev/null
+++ b/media/ffvpx/libavutil/mem.h
@@ -0,0 +1,700 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @ingroup lavu_mem
+ * Memory handling functions
+ */
+
+#ifndef AVUTIL_MEM_H
+#define AVUTIL_MEM_H
+
+#include <limits.h>
+#include <stdint.h>
+
+#include "attributes.h"
+#include "error.h"
+#include "avutil.h"
+
+/**
+ * @addtogroup lavu_mem
+ * Utilities for manipulating memory.
+ *
+ * FFmpeg has several applications of memory that are not required of a typical
+ * program. For example, the computing-heavy components like video decoding and
+ * encoding can be sped up significantly through the use of aligned memory.
+ *
+ * However, for each of FFmpeg's applications of memory, there might not be a
+ * recognized or standardized API for that specific use. Memory alignment, for
+ * instance, varies wildly depending on operating systems, architectures, and
+ * compilers. Hence, this component of @ref libavutil is created to make
+ * dealing with memory consistently possible on all platforms.
+ *
+ * @{
+ *
+ * @defgroup lavu_mem_macros Alignment Macros
+ * Helper macros for declaring aligned variables.
+ * @{
+ */
+
+/**
+ * @def DECLARE_ALIGNED(n,t,v)
+ * Declare a variable that is aligned in memory.
+ *
+ * @code{.c}
+ * DECLARE_ALIGNED(16, uint16_t, aligned_int) = 42;
+ * DECLARE_ALIGNED(32, uint8_t, aligned_array)[128];
+ *
+ * // The default-alignment equivalent would be
+ * uint16_t aligned_int = 42;
+ * uint8_t aligned_array[128];
+ * @endcode
+ *
+ * @param n Minimum alignment in bytes
+ * @param t Type of the variable (or array element)
+ * @param v Name of the variable
+ */
+
+/**
+ * @def DECLARE_ASM_ALIGNED(n,t,v)
+ * Declare an aligned variable appropriate for use in inline assembly code.
+ *
+ * @code{.c}
+ * DECLARE_ASM_ALIGNED(16, uint64_t, pw_08) = UINT64_C(0x0008000800080008);
+ * @endcode
+ *
+ * @param n Minimum alignment in bytes
+ * @param t Type of the variable (or array element)
+ * @param v Name of the variable
+ */
+
+/**
+ * @def DECLARE_ASM_CONST(n,t,v)
+ * Declare a static constant aligned variable appropriate for use in inline
+ * assembly code.
+ *
+ * @code{.c}
+ * DECLARE_ASM_CONST(16, uint64_t, pw_08) = UINT64_C(0x0008000800080008);
+ * @endcode
+ *
+ * @param n Minimum alignment in bytes
+ * @param t Type of the variable (or array element)
+ * @param v Name of the variable
+ */
+
+#if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1110 || defined(__SUNPRO_C)
+    #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
+    #define DECLARE_ASM_ALIGNED(n,t,v)  t __attribute__ ((aligned (n))) v
+    #define DECLARE_ASM_CONST(n,t,v)    const t __attribute__ ((aligned (n))) v
+#elif defined(__DJGPP__)
+    #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (FFMIN(n, 16)))) v
+    #define DECLARE_ASM_ALIGNED(n,t,v)  t av_used __attribute__ ((aligned (FFMIN(n, 16)))) v
+    #define DECLARE_ASM_CONST(n,t,v)    static const t av_used __attribute__ ((aligned (FFMIN(n, 16)))) v
+#elif defined(__GNUC__) || defined(__clang__)
+    #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
+    #define DECLARE_ASM_ALIGNED(n,t,v)  t av_used __attribute__ ((aligned (n))) v
+    #define DECLARE_ASM_CONST(n,t,v)    static const t av_used __attribute__ ((aligned (n))) v
+#elif defined(_MSC_VER)
+    #define DECLARE_ALIGNED(n,t,v)      __declspec(align(n)) t v
+    #define DECLARE_ASM_ALIGNED(n,t,v)  __declspec(align(n)) t v
+    #define DECLARE_ASM_CONST(n,t,v)    __declspec(align(n)) static const t v
+#else
+    #define DECLARE_ALIGNED(n,t,v)      t v
+    #define DECLARE_ASM_ALIGNED(n,t,v)  t v
+    #define DECLARE_ASM_CONST(n,t,v)    static const t v
+#endif
+
+/**
+ * @}
+ */
+
+/**
+ * @defgroup lavu_mem_attrs Function Attributes
+ * Function attributes applicable to memory handling functions.
+ *
+ * These function attributes can help compilers emit more useful warnings, or
+ * generate better code.
+ * @{
+ */
+
+/**
+ * @def av_malloc_attrib
+ * Function attribute denoting a malloc-like function.
+ *
+ * @see <a href="https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-g_t_0040code_007bmalloc_007d-function-attribute-3251">Function attribute `malloc` in GCC's documentation</a>
+ */
+
+#if AV_GCC_VERSION_AT_LEAST(3,1)
+    #define av_malloc_attrib __attribute__((__malloc__))
+#else
+    #define av_malloc_attrib
+#endif
+
+/**
+ * @def av_alloc_size(...)
+ * Function attribute used on a function that allocates memory, whose size is
+ * given by the specified parameter(s).
+ *
+ * @code{.c}
+ * void *av_malloc(size_t size) av_alloc_size(1);
+ * void *av_calloc(size_t nmemb, size_t size) av_alloc_size(1, 2);
+ * @endcode
+ *
+ * @param ... One or two parameter indexes, separated by a comma
+ *
+ * @see <a href="https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-g_t_0040code_007balloc_005fsize_007d-function-attribute-3220">Function attribute `alloc_size` in GCC's documentation</a>
+ */
+
+#if AV_GCC_VERSION_AT_LEAST(4,3)
+    #define av_alloc_size(...) __attribute__((alloc_size(__VA_ARGS__)))
+#else
+    #define av_alloc_size(...)
+#endif
+
+/**
+ * @}
+ */
+
+/**
+ * @defgroup lavu_mem_funcs Heap Management
+ * Functions responsible for allocating, freeing, and copying memory.
+ *
+ * All memory allocation functions have a built-in upper limit of `INT_MAX`
+ * bytes. This may be changed with av_max_alloc(), although exercise extreme
+ * caution when doing so.
+ *
+ * @{
+ */
+
+/**
+ * Allocate a memory block with alignment suitable for all memory accesses
+ * (including vectors if available on the CPU).
+ *
+ * @param size Size in bytes for the memory block to be allocated
+ * @return Pointer to the allocated block, or `NULL` if the block cannot
+ *         be allocated
+ * @see av_mallocz()
+ */
+void *av_malloc(size_t size) av_malloc_attrib av_alloc_size(1);
+
+/**
+ * Allocate a memory block with alignment suitable for all memory accesses
+ * (including vectors if available on the CPU) and zero all the bytes of the
+ * block.
+ *
+ * @param size Size in bytes for the memory block to be allocated
+ * @return Pointer to the allocated block, or `NULL` if it cannot be allocated
+ * @see av_malloc()
+ */
+void *av_mallocz(size_t size) av_malloc_attrib av_alloc_size(1);
+
+/**
+ * Allocate a memory block for an array with av_malloc().
+ *
+ * The allocated memory will have size `size * nmemb` bytes.
+ *
+ * @param nmemb Number of element
+ * @param size  Size of a single element
+ * @return Pointer to the allocated block, or `NULL` if the block cannot
+ *         be allocated
+ * @see av_malloc()
+ */
+av_alloc_size(1, 2) void *av_malloc_array(size_t nmemb, size_t size);
+
+/**
+ * Allocate a memory block for an array with av_mallocz().
+ *
+ * The allocated memory will have size `size * nmemb` bytes.
+ *
+ * @param nmemb Number of elements
+ * @param size  Size of the single element
+ * @return Pointer to the allocated block, or `NULL` if the block cannot
+ *         be allocated
+ *
+ * @see av_mallocz()
+ * @see av_malloc_array()
+ */
+av_alloc_size(1, 2) void *av_mallocz_array(size_t nmemb, size_t size);
+
+/**
+ * Non-inlined equivalent of av_mallocz_array().
+ *
+ * Created for symmetry with the calloc() C function.
+ */
+void *av_calloc(size_t nmemb, size_t size) av_malloc_attrib;
+
+/**
+ * Allocate, reallocate, or free a block of memory.
+ *
+ * If `ptr` is `NULL` and `size` > 0, allocate a new block. If `size` is
+ * zero, free the memory block pointed to by `ptr`. Otherwise, expand or
+ * shrink that block of memory according to `size`.
+ *
+ * @param ptr  Pointer to a memory block already allocated with
+ *             av_realloc() or `NULL`
+ * @param size Size in bytes of the memory block to be allocated or
+ *             reallocated
+ *
+ * @return Pointer to a newly-reallocated block or `NULL` if the block
+ *         cannot be reallocated or the function is used to free the memory block
+ *
+ * @warning Unlike av_malloc(), the returned pointer is not guaranteed to be
+ *          correctly aligned.
+ * @see av_fast_realloc()
+ * @see av_reallocp()
+ */
+void *av_realloc(void *ptr, size_t size) av_alloc_size(2);
+
+/**
+ * Allocate, reallocate, or free a block of memory through a pointer to a
+ * pointer.
+ *
+ * If `*ptr` is `NULL` and `size` > 0, allocate a new block. If `size` is
+ * zero, free the memory block pointed to by `*ptr`. Otherwise, expand or
+ * shrink that block of memory according to `size`.
+ *
+ * @param[in,out] ptr  Pointer to a pointer to a memory block already allocated
+ *                     with av_realloc(), or a pointer to `NULL`. The pointer
+ *                     is updated on success, or freed on failure.
+ * @param[in]     size Size in bytes for the memory block to be allocated or
+ *                     reallocated
+ *
+ * @return Zero on success, an AVERROR error code on failure
+ *
+ * @warning Unlike av_malloc(), the allocated memory is not guaranteed to be
+ *          correctly aligned.
+ */
+av_warn_unused_result
+int av_reallocp(void *ptr, size_t size);
+
+/**
+ * Allocate, reallocate, or free a block of memory.
+ *
+ * This function does the same thing as av_realloc(), except:
+ * - It takes two size arguments and allocates `nelem * elsize` bytes,
+ *   after checking the result of the multiplication for integer overflow.
+ * - It frees the input block in case of failure, thus avoiding the memory
+ *   leak with the classic
+ *   @code{.c}
+ *   buf = realloc(buf);
+ *   if (!buf)
+ *       return -1;
+ *   @endcode
+ *   pattern.
+ */
+void *av_realloc_f(void *ptr, size_t nelem, size_t elsize);
+
+/**
+ * Allocate, reallocate, or free an array.
+ *
+ * If `ptr` is `NULL` and `nmemb` > 0, allocate a new block. If
+ * `nmemb` is zero, free the memory block pointed to by `ptr`.
+ *
+ * @param ptr   Pointer to a memory block already allocated with
+ *              av_realloc() or `NULL`
+ * @param nmemb Number of elements in the array
+ * @param size  Size of the single element of the array
+ *
+ * @return Pointer to a newly-reallocated block or NULL if the block
+ *         cannot be reallocated or the function is used to free the memory block
+ *
+ * @warning Unlike av_malloc(), the allocated memory is not guaranteed to be
+ *          correctly aligned.
+ * @see av_reallocp_array()
+ */
+av_alloc_size(2, 3) void *av_realloc_array(void *ptr, size_t nmemb, size_t size);
+
+/**
+ * Allocate, reallocate, or free an array through a pointer to a pointer.
+ *
+ * If `*ptr` is `NULL` and `nmemb` > 0, allocate a new block. If `nmemb` is
+ * zero, free the memory block pointed to by `*ptr`.
+ *
+ * @param[in,out] ptr   Pointer to a pointer to a memory block already
+ *                      allocated with av_realloc(), or a pointer to `NULL`.
+ *                      The pointer is updated on success, or freed on failure.
+ * @param[in]     nmemb Number of elements
+ * @param[in]     size  Size of the single element
+ *
+ * @return Zero on success, an AVERROR error code on failure
+ *
+ * @warning Unlike av_malloc(), the allocated memory is not guaranteed to be
+ *          correctly aligned.
+ */
+int av_reallocp_array(void *ptr, size_t nmemb, size_t size);
+
+/**
+ * Reallocate the given buffer if it is not large enough, otherwise do nothing.
+ *
+ * If the given buffer is `NULL`, then a new uninitialized buffer is allocated.
+ *
+ * If the given buffer is not large enough, and reallocation fails, `NULL` is
+ * returned and `*size` is set to 0, but the original buffer is not changed or
+ * freed.
+ *
+ * A typical use pattern follows:
+ *
+ * @code{.c}
+ * uint8_t *buf = ...;
+ * uint8_t *new_buf = av_fast_realloc(buf, &current_size, size_needed);
+ * if (!new_buf) {
+ *     // Allocation failed; clean up original buffer
+ *     av_freep(&buf);
+ *     return AVERROR(ENOMEM);
+ * }
+ * @endcode
+ *
+ * @param[in,out] ptr      Already allocated buffer, or `NULL`
+ * @param[in,out] size     Pointer to the size of buffer `ptr`. `*size` is
+ *                         updated to the new allocated size, in particular 0
+ *                         in case of failure.
+ * @param[in]     min_size Desired minimal size of buffer `ptr`
+ * @return `ptr` if the buffer is large enough, a pointer to newly reallocated
+ *         buffer if the buffer was not large enough, or `NULL` in case of
+ *         error
+ * @see av_realloc()
+ * @see av_fast_malloc()
+ */
+void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size);
+
+/**
+ * Allocate a buffer, reusing the given one if large enough.
+ *
+ * Contrary to av_fast_realloc(), the current buffer contents might not be
+ * preserved and on error the old buffer is freed, thus no special handling to
+ * avoid memleaks is necessary.
+ *
+ * `*ptr` is allowed to be `NULL`, in which case allocation always happens if
+ * `size_needed` is greater than 0.
+ *
+ * @code{.c}
+ * uint8_t *buf = ...;
+ * av_fast_malloc(&buf, &current_size, size_needed);
+ * if (!buf) {
+ *     // Allocation failed; buf already freed
+ *     return AVERROR(ENOMEM);
+ * }
+ * @endcode
+ *
+ * @param[in,out] ptr      Pointer to pointer to an already allocated buffer.
+ *                         `*ptr` will be overwritten with pointer to new
+ *                         buffer on success or `NULL` on failure
+ * @param[in,out] size     Pointer to the size of buffer `*ptr`. `*size` is
+ *                         updated to the new allocated size, in particular 0
+ *                         in case of failure.
+ * @param[in]     min_size Desired minimal size of buffer `*ptr`
+ * @see av_realloc()
+ * @see av_fast_mallocz()
+ */
+void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size);
+
+/**
+ * Allocate and clear a buffer, reusing the given one if large enough.
+ *
+ * Like av_fast_malloc(), but all newly allocated space is initially cleared.
+ * Reused buffer is not cleared.
+ *
+ * `*ptr` is allowed to be `NULL`, in which case allocation always happens if
+ * `size_needed` is greater than 0.
+ *
+ * @param[in,out] ptr      Pointer to pointer to an already allocated buffer.
+ *                         `*ptr` will be overwritten with pointer to new
+ *                         buffer on success or `NULL` on failure
+ * @param[in,out] size     Pointer to the size of buffer `*ptr`. `*size` is
+ *                         updated to the new allocated size, in particular 0
+ *                         in case of failure.
+ * @param[in]     min_size Desired minimal size of buffer `*ptr`
+ * @see av_fast_malloc()
+ */
+void av_fast_mallocz(void *ptr, unsigned int *size, size_t min_size);
+
+/**
+ * Free a memory block which has been allocated with a function of av_malloc()
+ * or av_realloc() family.
+ *
+ * @param ptr Pointer to the memory block which should be freed.
+ *
+ * @note `ptr = NULL` is explicitly allowed.
+ * @note It is recommended that you use av_freep() instead, to prevent leaving
+ *       behind dangling pointers.
+ * @see av_freep()
+ */
+void av_free(void *ptr);
+
+/**
+ * Free a memory block which has been allocated with a function of av_malloc()
+ * or av_realloc() family, and set the pointer pointing to it to `NULL`.
+ *
+ * @code{.c}
+ * uint8_t *buf = av_malloc(16);
+ * av_free(buf);
+ * // buf now contains a dangling pointer to freed memory, and accidental
+ * // dereference of buf will result in a use-after-free, which may be a
+ * // security risk.
+ *
+ * uint8_t *buf = av_malloc(16);
+ * av_freep(&buf);
+ * // buf is now NULL, and accidental dereference will only result in a
+ * // NULL-pointer dereference.
+ * @endcode
+ *
+ * @param ptr Pointer to the pointer to the memory block which should be freed
+ * @note `*ptr = NULL` is safe and leads to no action.
+ * @see av_free()
+ */
+void av_freep(void *ptr);
+
+/**
+ * Duplicate a string.
+ *
+ * @param s String to be duplicated
+ * @return Pointer to a newly-allocated string containing a
+ *         copy of `s` or `NULL` if the string cannot be allocated
+ * @see av_strndup()
+ */
+char *av_strdup(const char *s) av_malloc_attrib;
+
+/**
+ * Duplicate a substring of a string.
+ *
+ * @param s   String to be duplicated
+ * @param len Maximum length of the resulting string (not counting the
+ *            terminating byte)
+ * @return Pointer to a newly-allocated string containing a
+ *         substring of `s` or `NULL` if the string cannot be allocated
+ */
+char *av_strndup(const char *s, size_t len) av_malloc_attrib;
+
+/**
+ * Duplicate a buffer with av_malloc().
+ *
+ * @param p    Buffer to be duplicated
+ * @param size Size in bytes of the buffer copied
+ * @return Pointer to a newly allocated buffer containing a
+ *         copy of `p` or `NULL` if the buffer cannot be allocated
+ */
+void *av_memdup(const void *p, size_t size);
+
+/**
+ * Overlapping memcpy() implementation.
+ *
+ * @param dst  Destination buffer
+ * @param back Number of bytes back to start copying (i.e. the initial size of
+ *             the overlapping window); must be > 0
+ * @param cnt  Number of bytes to copy; must be >= 0
+ *
+ * @note `cnt > back` is valid, this will copy the bytes we just copied,
+ *       thus creating a repeating pattern with a period length of `back`.
+ */
+void av_memcpy_backptr(uint8_t *dst, int back, int cnt);
+
+/**
+ * @}
+ */
+
+/**
+ * @defgroup lavu_mem_dynarray Dynamic Array
+ *
+ * Utilities to make an array grow when needed.
+ *
+ * Sometimes, the programmer would want to have an array that can grow when
+ * needed. The libavutil dynamic array utilities fill that need.
+ *
+ * libavutil supports two systems of appending elements onto a dynamically
+ * allocated array, the first one storing the pointer to the value in the
+ * array, and the second storing the value directly. In both systems, the
+ * caller is responsible for maintaining a variable containing the length of
+ * the array, as well as freeing of the array after use.
+ *
+ * The first system stores pointers to values in a block of dynamically
+ * allocated memory. Since only pointers are stored, the function does not need
+ * to know the size of the type. Both av_dynarray_add() and
+ * av_dynarray_add_nofree() implement this system.
+ *
+ * @code
+ * type **array = NULL; //< an array of pointers to values
+ * int    nb    = 0;    //< a variable to keep track of the length of the array
+ *
+ * type to_be_added  = ...;
+ * type to_be_added2 = ...;
+ *
+ * av_dynarray_add(&array, &nb, &to_be_added);
+ * if (nb == 0)
+ *     return AVERROR(ENOMEM);
+ *
+ * av_dynarray_add(&array, &nb, &to_be_added2);
+ * if (nb == 0)
+ *     return AVERROR(ENOMEM);
+ *
+ * // Now:
+ * //  nb           == 2
+ * // &to_be_added  == array[0]
+ * // &to_be_added2 == array[1]
+ *
+ * av_freep(&array);
+ * @endcode
+ *
+ * The second system stores the value directly in a block of memory. As a
+ * result, the function has to know the size of the type. av_dynarray2_add()
+ * implements this mechanism.
+ *
+ * @code
+ * type *array = NULL; //< an array of values
+ * int   nb    = 0;    //< a variable to keep track of the length of the array
+ *
+ * type to_be_added  = ...;
+ * type to_be_added2 = ...;
+ *
+ * type *addr = av_dynarray2_add((void **)&array, &nb, sizeof(*array), NULL);
+ * if (!addr)
+ *     return AVERROR(ENOMEM);
+ * memcpy(addr, &to_be_added, sizeof(to_be_added));
+ *
+ * // Shortcut of the above.
+ * type *addr = av_dynarray2_add((void **)&array, &nb, sizeof(*array),
+ *                               (const void *)&to_be_added2);
+ * if (!addr)
+ *     return AVERROR(ENOMEM);
+ *
+ * // Now:
+ * //  nb           == 2
+ * //  to_be_added  == array[0]
+ * //  to_be_added2 == array[1]
+ *
+ * av_freep(&array);
+ * @endcode
+ *
+ * @{
+ */
+
+/**
+ * Add the pointer to an element to a dynamic array.
+ *
+ * The array to grow is supposed to be an array of pointers to
+ * structures, and the element to add must be a pointer to an already
+ * allocated structure.
+ *
+ * The array is reallocated when its size reaches powers of 2.
+ * Therefore, the amortized cost of adding an element is constant.
+ *
+ * In case of success, the pointer to the array is updated in order to
+ * point to the new grown array, and the number pointed to by `nb_ptr`
+ * is incremented.
+ * In case of failure, the array is freed, `*tab_ptr` is set to `NULL` and
+ * `*nb_ptr` is set to 0.
+ *
+ * @param[in,out] tab_ptr Pointer to the array to grow
+ * @param[in,out] nb_ptr  Pointer to the number of elements in the array
+ * @param[in]     elem    Element to add
+ * @see av_dynarray_add_nofree(), av_dynarray2_add()
+ */
+void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem);
+
+/**
+ * Add an element to a dynamic array.
+ *
+ * Function has the same functionality as av_dynarray_add(),
+ * but it doesn't free memory on fails. It returns error code
+ * instead and leave current buffer untouched.
+ *
+ * @return >=0 on success, negative otherwise
+ * @see av_dynarray_add(), av_dynarray2_add()
+ */
+av_warn_unused_result
+int av_dynarray_add_nofree(void *tab_ptr, int *nb_ptr, void *elem);
+
+/**
+ * Add an element of size `elem_size` to a dynamic array.
+ *
+ * The array is reallocated when its number of elements reaches powers of 2.
+ * Therefore, the amortized cost of adding an element is constant.
+ *
+ * In case of success, the pointer to the array is updated in order to
+ * point to the new grown array, and the number pointed to by `nb_ptr`
+ * is incremented.
+ * In case of failure, the array is freed, `*tab_ptr` is set to `NULL` and
+ * `*nb_ptr` is set to 0.
+ *
+ * @param[in,out] tab_ptr   Pointer to the array to grow
+ * @param[in,out] nb_ptr    Pointer to the number of elements in the array
+ * @param[in]     elem_size Size in bytes of an element in the array
+ * @param[in]     elem_data Pointer to the data of the element to add. If
+ *                          `NULL`, the space of the newly added element is
+ *                          allocated but left uninitialized.
+ *
+ * @return Pointer to the data of the element to copy in the newly allocated
+ *         space
+ * @see av_dynarray_add(), av_dynarray_add_nofree()
+ */
+void *av_dynarray2_add(void **tab_ptr, int *nb_ptr, size_t elem_size,
+                       const uint8_t *elem_data);
+
+/**
+ * @}
+ */
+
+/**
+ * @defgroup lavu_mem_misc Miscellaneous Functions
+ *
+ * Other functions related to memory allocation.
+ *
+ * @{
+ */
+
+/**
+ * Multiply two `size_t` values checking for overflow.
+ *
+ * @param[in]  a,b Operands of multiplication
+ * @param[out] r   Pointer to the result of the operation
+ * @return 0 on success, AVERROR(EINVAL) on overflow
+ */
+static inline int av_size_mult(size_t a, size_t b, size_t *r)
+{
+    size_t t = a * b;
+    /* Hack inspired from glibc: don't try the division if nelem and elsize
+     * are both less than sqrt(SIZE_MAX). */
+    if ((a | b) >= ((size_t)1 << (sizeof(size_t) * 4)) && a && t / a != b)
+        return AVERROR(EINVAL);
+    *r = t;
+    return 0;
+}
+
+/**
+ * Set the maximum size that may be allocated in one block.
+ *
+ * The value specified with this function is effective for all libavutil's @ref
+ * lavu_mem_funcs "heap management functions."
+ *
+ * By default, the max value is defined as `INT_MAX`.
+ *
+ * @param max Value to be set as the new maximum size
+ *
+ * @warning Exercise extreme caution when using this function. Don't touch
+ *          this if you do not understand the full consequence of doing so.
+ */
+void av_max_alloc(size_t max);
+
+/**
+ * @}
+ * @}
+ */
+
+#endif /* AVUTIL_MEM_H */
diff --git a/media/ffvpx/libavutil/mem_internal.h b/media/ffvpx/libavutil/mem_internal.h
new file mode 100644
index 0000000000..6fdbcb016e
--- /dev/null
+++ b/media/ffvpx/libavutil/mem_internal.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_MEM_INTERNAL_H
+#define AVUTIL_MEM_INTERNAL_H
+
+#include "avassert.h"
+#include "mem.h"
+
+static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
+{
+    void *val;
+
+    memcpy(&val, ptr, sizeof(val));
+    if (min_size <= *size) {
+        av_assert0(val || !min_size);
+        return 0;
+    }
+    min_size = FFMAX(min_size + min_size / 16 + 32, min_size);
+    av_freep(ptr);
+    val = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
+    memcpy(ptr, &val, sizeof(val));
+    if (!val)
+        min_size = 0;
+    *size = min_size;
+    return 1;
+}
+#endif /* AVUTIL_MEM_INTERNAL_H */
diff --git a/media/ffvpx/libavutil/moz.build b/media/ffvpx/libavutil/moz.build
new file mode 100644
index 0000000000..849cbe6f44
--- /dev/null
+++ b/media/ffvpx/libavutil/moz.build
@@ -0,0 +1,77 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Due to duplicate file names, we compile libavutil/x86 in its own
+# moz.build file.
+if CONFIG['FFVPX_ASFLAGS']:
+    if CONFIG['CPU_ARCH'] == 'x86' or CONFIG['CPU_ARCH'] == 'x86_64':
+        DIRS += ['x86']
+    elif CONFIG['CPU_ARCH'] == 'arm':
+        DIRS += ['arm']
+    elif CONFIG['CPU_ARCH'] == 'aarch64':
+        DIRS += ['aarch64']
+
+SharedLibrary('mozavutil')
+SOURCES += [
+    'avstring.c',
+    'bprint.c',
+    'buffer.c',
+    'channel_layout.c',
+    'cpu.c',
+    'crc.c',
+    'dict.c',
+    'error.c',
+    'eval.c',
+    'fifo.c',
+    'fixed_dsp.c',
+    'float_dsp.c',
+    'frame.c',
+    'hwcontext.c',
+    'imgutils.c',
+    'log.c',
+    'log2_tab.c',
+    'mathematics.c',
+    'mem.c',
+    'opt.c',
+    'parseutils.c',
+    'pixdesc.c',
+    'rational.c',
+    'reverse.c',
+    'samplefmt.c',
+    'slicethread.c',
+    'time.c',
+    'utils.c'
+]
+if CONFIG['MOZ_WAYLAND']:
+    SOURCES += [
+        'hwcontext_vaapi.c',
+    ]
+    USE_LIBS += ['mozva']
+
+if not CONFIG['MOZ_FFVPX_AUDIOONLY']:
+    SOURCES += [
+        'adler32.c',
+        'base64.c',
+        'color_utils.c',
+        'integer.c',
+        'intmath.c',
+        'lls.c',
+        'pixelutils.c',
+        'threadmessage.c',
+        'timecode.c'
+    ]
+
+SYMBOLS_FILE =  'avutil.symbols'
+NoVisibilityFlags()
+
+OS_LIBS += CONFIG['REALTIME_LIBS']
+if CONFIG['OS_TARGET'] != 'WINNT':
+    OS_LIBS += ['m']
+
+if CONFIG['MOZ_NEEDS_LIBATOMIC']:
+    OS_LIBS += ['atomic']
+
+include("../ffvpxcommon.mozbuild")
diff --git a/media/ffvpx/libavutil/opt.c b/media/ffvpx/libavutil/opt.c
new file mode 100644
index 0000000000..93d6c26c11
--- /dev/null
+++ b/media/ffvpx/libavutil/opt.c
@@ -0,0 +1,2039 @@
+/*
+ * AVOptions
+ * Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * AVOptions
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#include "avutil.h"
+#include "avassert.h"
+#include "avstring.h"
+#include "channel_layout.h"
+#include "common.h"
+#include "dict.h"
+#include "eval.h"
+#include "log.h"
+#include "parseutils.h"
+#include "pixdesc.h"
+#include "mathematics.h"
+#include "opt.h"
+#include "samplefmt.h"
+#include "bprint.h"
+
+#include <float.h>
+
+const AVOption *av_opt_next(const void *obj, const AVOption *last)
+{
+    const AVClass *class;
+    if (!obj)
+        return NULL;
+    class = *(const AVClass**)obj;
+    if (!last && class && class->option && class->option[0].name)
+        return class->option;
+    if (last && last[1].name)
+        return ++last;
+    return NULL;
+}
+
+static int read_number(const AVOption *o, const void *dst, double *num, int *den, int64_t *intnum)
+{
+    switch (o->type) {
+    case AV_OPT_TYPE_FLAGS:
+        *intnum = *(unsigned int*)dst;
+        return 0;
+    case AV_OPT_TYPE_PIXEL_FMT:
+        *intnum = *(enum AVPixelFormat *)dst;
+        return 0;
+    case AV_OPT_TYPE_SAMPLE_FMT:
+        *intnum = *(enum AVSampleFormat *)dst;
+        return 0;
+    case AV_OPT_TYPE_BOOL:
+    case AV_OPT_TYPE_INT:
+        *intnum = *(int *)dst;
+        return 0;
+    case AV_OPT_TYPE_CHANNEL_LAYOUT:
+    case AV_OPT_TYPE_DURATION:
+    case AV_OPT_TYPE_INT64:
+    case AV_OPT_TYPE_UINT64:
+        *intnum = *(int64_t *)dst;
+        return 0;
+    case AV_OPT_TYPE_FLOAT:
+        *num = *(float *)dst;
+        return 0;
+    case AV_OPT_TYPE_DOUBLE:
+        *num = *(double *)dst;
+        return 0;
+    case AV_OPT_TYPE_RATIONAL:
+        *intnum = ((AVRational *)dst)->num;
+        *den    = ((AVRational *)dst)->den;
+        return 0;
+    case AV_OPT_TYPE_CONST:
+        *num = o->default_val.dbl;
+        return 0;
+    }
+    return AVERROR(EINVAL);
+}
+
+static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
+{
+    if (o->type != AV_OPT_TYPE_FLAGS &&
+        (!den || o->max * den < num * intnum || o->min * den > num * intnum)) {
+        num = den ? num * intnum / den : (num && intnum ? INFINITY : NAN);
+        av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
+               num, o->name, o->min, o->max);
+        return AVERROR(ERANGE);
+    }
+    if (o->type == AV_OPT_TYPE_FLAGS) {
+        double d = num*intnum/den;
+        if (d < -1.5 || d > 0xFFFFFFFF+0.5 || (llrint(d*256) & 255)) {
+            av_log(obj, AV_LOG_ERROR,
+                   "Value %f for parameter '%s' is not a valid set of 32bit integer flags\n",
+                   num*intnum/den, o->name);
+            return AVERROR(ERANGE);
+        }
+    }
+
+    switch (o->type) {
+    case AV_OPT_TYPE_PIXEL_FMT:
+        *(enum AVPixelFormat *)dst = llrint(num / den) * intnum;
+        break;
+    case AV_OPT_TYPE_SAMPLE_FMT:
+        *(enum AVSampleFormat *)dst = llrint(num / den) * intnum;
+        break;
+    case AV_OPT_TYPE_BOOL:
+    case AV_OPT_TYPE_FLAGS:
+    case AV_OPT_TYPE_INT:
+        *(int *)dst = llrint(num / den) * intnum;
+        break;
+    case AV_OPT_TYPE_DURATION:
+    case AV_OPT_TYPE_CHANNEL_LAYOUT:
+    case AV_OPT_TYPE_INT64:{
+        double d = num / den;
+        if (intnum == 1 && d == (double)INT64_MAX) {
+            *(int64_t *)dst = INT64_MAX;
+        } else
+            *(int64_t *)dst = llrint(d) * intnum;
+        break;}
+    case AV_OPT_TYPE_UINT64:{
+        double d = num / den;
+        // We must special case uint64_t here as llrint() does not support values
+        // outside the int64_t range and there is no portable function which does
+        // "INT64_MAX + 1ULL" is used as it is representable exactly as IEEE double
+        // while INT64_MAX is not
+        if (intnum == 1 && d == (double)UINT64_MAX) {
+            *(uint64_t *)dst = UINT64_MAX;
+        } else if (d > INT64_MAX + 1ULL) {
+            *(uint64_t *)dst = (llrint(d - (INT64_MAX + 1ULL)) + (INT64_MAX + 1ULL))*intnum;
+        } else {
+            *(uint64_t *)dst = llrint(d) * intnum;
+        }
+        break;}
+    case AV_OPT_TYPE_FLOAT:
+        *(float *)dst = num * intnum / den;
+        break;
+    case AV_OPT_TYPE_DOUBLE:
+        *(double    *)dst = num * intnum / den;
+        break;
+    case AV_OPT_TYPE_RATIONAL:
+    case AV_OPT_TYPE_VIDEO_RATE:
+        if ((int) num == num)
+            *(AVRational *)dst = (AVRational) { num *intnum, den };
+        else
+            *(AVRational *)dst = av_d2q(num * intnum / den, 1 << 24);
+        break;
+    default:
+        return AVERROR(EINVAL);
+    }
+    return 0;
+}
+
+static int hexchar2int(char c) {
+    if (c >= '0' && c <= '9')
+        return c - '0';
+    if (c >= 'a' && c <= 'f')
+        return c - 'a' + 10;
+    if (c >= 'A' && c <= 'F')
+        return c - 'A' + 10;
+    return -1;
+}
+
+static int set_string_binary(void *obj, const AVOption *o, const char *val, uint8_t **dst)
+{
+    int *lendst = (int *)(dst + 1);
+    uint8_t *bin, *ptr;
+    int len;
+
+    av_freep(dst);
+    *lendst = 0;
+
+    if (!val || !(len = strlen(val)))
+        return 0;
+
+    if (len & 1)
+        return AVERROR(EINVAL);
+    len /= 2;
+
+    ptr = bin = av_malloc(len);
+    if (!ptr)
+        return AVERROR(ENOMEM);
+    while (*val) {
+        int a = hexchar2int(*val++);
+        int b = hexchar2int(*val++);
+        if (a < 0 || b < 0) {
+            av_free(bin);
+            return AVERROR(EINVAL);
+        }
+        *ptr++ = (a << 4) | b;
+    }
+    *dst    = bin;
+    *lendst = len;
+
+    return 0;
+}
+
+static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **dst)
+{
+    av_freep(dst);
+    *dst = av_strdup(val);
+    return *dst ? 0 : AVERROR(ENOMEM);
+}
+
+#define DEFAULT_NUMVAL(opt) ((opt->type == AV_OPT_TYPE_INT64 || \
+                              opt->type == AV_OPT_TYPE_UINT64 || \
+                              opt->type == AV_OPT_TYPE_CONST || \
+                              opt->type == AV_OPT_TYPE_FLAGS || \
+                              opt->type == AV_OPT_TYPE_INT)     \
+                             ? opt->default_val.i64             \
+                             : opt->default_val.dbl)
+
+static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
+{
+    int ret = 0;
+    int num, den;
+    char c;
+
+    if (sscanf(val, "%d%*1[:/]%d%c", &num, &den, &c) == 2) {
+        if ((ret = write_number(obj, o, dst, 1, den, num)) >= 0)
+            return ret;
+        ret = 0;
+    }
+
+    for (;;) {
+        int i = 0;
+        char buf[256];
+        int cmd = 0;
+        double d;
+        int64_t intnum = 1;
+
+        if (o->type == AV_OPT_TYPE_FLAGS) {
+            if (*val == '+' || *val == '-')
+                cmd = *(val++);
+            for (; i < sizeof(buf) - 1 && val[i] && val[i] != '+' && val[i] != '-'; i++)
+                buf[i] = val[i];
+            buf[i] = 0;
+        }
+
+        {
+            const AVOption *o_named = av_opt_find(target_obj, i ? buf : val, o->unit, 0, 0);
+            int res;
+            int ci = 0;
+            double const_values[64];
+            const char * const_names[64];
+            if (o_named && o_named->type == AV_OPT_TYPE_CONST)
+                d = DEFAULT_NUMVAL(o_named);
+            else {
+                if (o->unit) {
+                    for (o_named = NULL; o_named = av_opt_next(target_obj, o_named); ) {
+                        if (o_named->type == AV_OPT_TYPE_CONST &&
+                            o_named->unit &&
+                            !strcmp(o_named->unit, o->unit)) {
+                            if (ci + 6 >= FF_ARRAY_ELEMS(const_values)) {
+                                av_log(obj, AV_LOG_ERROR, "const_values array too small for %s\n", o->unit);
+                                return AVERROR_PATCHWELCOME;
+                            }
+                            const_names [ci  ] = o_named->name;
+                            const_values[ci++] = DEFAULT_NUMVAL(o_named);
+                        }
+                    }
+                }
+                const_names [ci  ] = "default";
+                const_values[ci++] = DEFAULT_NUMVAL(o);
+                const_names [ci  ] = "max";
+                const_values[ci++] = o->max;
+                const_names [ci  ] = "min";
+                const_values[ci++] = o->min;
+                const_names [ci  ] = "none";
+                const_values[ci++] = 0;
+                const_names [ci  ] = "all";
+                const_values[ci++] = ~0;
+                const_names [ci] = NULL;
+                const_values[ci] = 0;
+
+                res = av_expr_parse_and_eval(&d, i ? buf : val, const_names,
+                                            const_values, NULL, NULL, NULL, NULL, NULL, 0, obj);
+                if (res < 0) {
+                    av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\"\n", val);
+                    return res;
+                }
+            }
+        }
+        if (o->type == AV_OPT_TYPE_FLAGS) {
+            read_number(o, dst, NULL, NULL, &intnum);
+            if (cmd == '+')
+                d = intnum | (int64_t)d;
+            else if (cmd == '-')
+                d = intnum &~(int64_t)d;
+        }
+
+        if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
+            return ret;
+        val += i;
+        if (!i || !*val)
+            return 0;
+    }
+}
+
+static int set_string_image_size(void *obj, const AVOption *o, const char *val, int *dst)
+{
+    int ret;
+
+    if (!val || !strcmp(val, "none")) {
+        dst[0] =
+        dst[1] = 0;
+        return 0;
+    }
+    ret = av_parse_video_size(dst, dst + 1, val);
+    if (ret < 0)
+        av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val);
+    return ret;
+}
+
+static int set_string_video_rate(void *obj, const AVOption *o, const char *val, AVRational *dst)
+{
+    int ret;
+    if (!val) {
+        ret = AVERROR(EINVAL);
+    } else {
+        ret = av_parse_video_rate(dst, val);
+    }
+    if (ret < 0)
+        av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as video rate\n", val);
+    return ret;
+}
+
+static int set_string_color(void *obj, const AVOption *o, const char *val, uint8_t *dst)
+{
+    int ret;
+
+    if (!val) {
+        return 0;
+    } else {
+        ret = av_parse_color(dst, val, -1, obj);
+        if (ret < 0)
+            av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as color\n", val);
+        return ret;
+    }
+    return 0;
+}
+
+static const char *get_bool_name(int val)
+{
+    if (val < 0)
+        return "auto";
+    return val ? "true" : "false";
+}
+
+static int set_string_bool(void *obj, const AVOption *o, const char *val, int *dst)
+{
+    int n;
+
+    if (!val)
+        return 0;
+
+    if (!strcmp(val, "auto")) {
+        n = -1;
+    } else if (av_match_name(val, "true,y,yes,enable,enabled,on")) {
+        n = 1;
+    } else if (av_match_name(val, "false,n,no,disable,disabled,off")) {
+        n = 0;
+    } else {
+        char *end = NULL;
+        n = strtol(val, &end, 10);
+        if (val + strlen(val) != end)
+            goto fail;
+    }
+
+    if (n < o->min || n > o->max)
+        goto fail;
+
+    *dst = n;
+    return 0;
+
+fail:
+    av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as boolean\n", val);
+    return AVERROR(EINVAL);
+}
+
+static int set_string_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst,
+                          int fmt_nb, int ((*get_fmt)(const char *)), const char *desc)
+{
+    int fmt, min, max;
+
+    if (!val || !strcmp(val, "none")) {
+        fmt = -1;
+    } else {
+        fmt = get_fmt(val);
+        if (fmt == -1) {
+            char *tail;
+            fmt = strtol(val, &tail, 0);
+            if (*tail || (unsigned)fmt >= fmt_nb) {
+                av_log(obj, AV_LOG_ERROR,
+                       "Unable to parse option value \"%s\" as %s\n", val, desc);
+                return AVERROR(EINVAL);
+            }
+        }
+    }
+
+    min = FFMAX(o->min, -1);
+    max = FFMIN(o->max, fmt_nb-1);
+
+    // hack for compatibility with old ffmpeg
+    if(min == 0 && max == 0) {
+        min = -1;
+        max = fmt_nb-1;
+    }
+
+    if (fmt < min || fmt > max) {
+        av_log(obj, AV_LOG_ERROR,
+               "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
+               fmt, o->name, desc, min, max);
+        return AVERROR(ERANGE);
+    }
+
+    *(int *)dst = fmt;
+    return 0;
+}
+
+static int set_string_pixel_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
+{
+    return set_string_fmt(obj, o, val, dst,
+                          AV_PIX_FMT_NB, av_get_pix_fmt, "pixel format");
+}
+
+static int set_string_sample_fmt(void *obj, const AVOption *o, const char *val, uint8_t *dst)
+{
+    return set_string_fmt(obj, o, val, dst,
+                          AV_SAMPLE_FMT_NB, av_get_sample_fmt, "sample format");
+}
+
+int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
+{
+    int ret = 0;
+    void *dst, *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (!val && (o->type != AV_OPT_TYPE_STRING &&
+                 o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_SAMPLE_FMT &&
+                 o->type != AV_OPT_TYPE_IMAGE_SIZE && o->type != AV_OPT_TYPE_VIDEO_RATE &&
+                 o->type != AV_OPT_TYPE_DURATION && o->type != AV_OPT_TYPE_COLOR &&
+                 o->type != AV_OPT_TYPE_CHANNEL_LAYOUT && o->type != AV_OPT_TYPE_BOOL))
+        return AVERROR(EINVAL);
+
+    if (o->flags & AV_OPT_FLAG_READONLY)
+        return AVERROR(EINVAL);
+
+    if (o->flags & AV_OPT_FLAG_DEPRECATED)
+        av_log(obj, AV_LOG_WARNING, "The \"%s\" option is deprecated: %s\n", name, o->help);
+
+    dst = ((uint8_t *)target_obj) + o->offset;
+    switch (o->type) {
+    case AV_OPT_TYPE_BOOL:
+        return set_string_bool(obj, o, val, dst);
+    case AV_OPT_TYPE_STRING:
+        return set_string(obj, o, val, dst);
+    case AV_OPT_TYPE_BINARY:
+        return set_string_binary(obj, o, val, dst);
+    case AV_OPT_TYPE_FLAGS:
+    case AV_OPT_TYPE_INT:
+    case AV_OPT_TYPE_INT64:
+    case AV_OPT_TYPE_UINT64:
+    case AV_OPT_TYPE_FLOAT:
+    case AV_OPT_TYPE_DOUBLE:
+    case AV_OPT_TYPE_RATIONAL:
+        return set_string_number(obj, target_obj, o, val, dst);
+    case AV_OPT_TYPE_IMAGE_SIZE:
+        return set_string_image_size(obj, o, val, dst);
+    case AV_OPT_TYPE_VIDEO_RATE: {
+        AVRational tmp;
+        ret = set_string_video_rate(obj, o, val, &tmp);
+        if (ret < 0)
+            return ret;
+        return write_number(obj, o, dst, 1, tmp.den, tmp.num);
+    }
+    case AV_OPT_TYPE_PIXEL_FMT:
+        return set_string_pixel_fmt(obj, o, val, dst);
+    case AV_OPT_TYPE_SAMPLE_FMT:
+        return set_string_sample_fmt(obj, o, val, dst);
+    case AV_OPT_TYPE_DURATION:
+        {
+            int64_t usecs = 0;
+            if (val) {
+                if ((ret = av_parse_time(&usecs, val, 1)) < 0) {
+                    av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", val);
+                    return ret;
+                }
+            }
+            if (usecs < o->min || usecs > o->max) {
+                av_log(obj, AV_LOG_ERROR, "Value %f for parameter '%s' out of range [%g - %g]\n",
+                       usecs / 1000000.0, o->name, o->min / 1000000.0, o->max / 1000000.0);
+                return AVERROR(ERANGE);
+            }
+            *(int64_t *)dst = usecs;
+            return 0;
+        }
+    case AV_OPT_TYPE_COLOR:
+        return set_string_color(obj, o, val, dst);
+    case AV_OPT_TYPE_CHANNEL_LAYOUT:
+        if (!val || !strcmp(val, "none")) {
+            *(int64_t *)dst = 0;
+        } else {
+            int64_t cl = av_get_channel_layout(val);
+            if (!cl) {
+                av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as channel layout\n", val);
+                ret = AVERROR(EINVAL);
+            }
+            *(int64_t *)dst = cl;
+            return ret;
+        }
+        break;
+    }
+
+    av_log(obj, AV_LOG_ERROR, "Invalid option type.\n");
+    return AVERROR(EINVAL);
+}
+
+#define OPT_EVAL_NUMBER(name, opttype, vartype)                         \
+int av_opt_eval_ ## name(void *obj, const AVOption *o,                  \
+                         const char *val, vartype *name ## _out)        \
+{                                                                       \
+    if (!o || o->type != opttype || o->flags & AV_OPT_FLAG_READONLY)    \
+        return AVERROR(EINVAL);                                         \
+    return set_string_number(obj, obj, o, val, name ## _out);           \
+}
+
+OPT_EVAL_NUMBER(flags,  AV_OPT_TYPE_FLAGS,    int)
+OPT_EVAL_NUMBER(int,    AV_OPT_TYPE_INT,      int)
+OPT_EVAL_NUMBER(int64,  AV_OPT_TYPE_INT64,    int64_t)
+OPT_EVAL_NUMBER(float,  AV_OPT_TYPE_FLOAT,    float)
+OPT_EVAL_NUMBER(double, AV_OPT_TYPE_DOUBLE,   double)
+OPT_EVAL_NUMBER(q,      AV_OPT_TYPE_RATIONAL, AVRational)
+
+static int set_number(void *obj, const char *name, double num, int den, int64_t intnum,
+                      int search_flags)
+{
+    void *dst, *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+
+    if (o->flags & AV_OPT_FLAG_READONLY)
+        return AVERROR(EINVAL);
+
+    dst = ((uint8_t *)target_obj) + o->offset;
+    return write_number(obj, o, dst, num, den, intnum);
+}
+
+int av_opt_set_int(void *obj, const char *name, int64_t val, int search_flags)
+{
+    return set_number(obj, name, 1, 1, val, search_flags);
+}
+
+int av_opt_set_double(void *obj, const char *name, double val, int search_flags)
+{
+    return set_number(obj, name, val, 1, 1, search_flags);
+}
+
+int av_opt_set_q(void *obj, const char *name, AVRational val, int search_flags)
+{
+    return set_number(obj, name, val.num, val.den, 1, search_flags);
+}
+
+int av_opt_set_bin(void *obj, const char *name, const uint8_t *val, int len, int search_flags)
+{
+    void *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+    uint8_t *ptr;
+    uint8_t **dst;
+    int *lendst;
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+
+    if (o->type != AV_OPT_TYPE_BINARY || o->flags & AV_OPT_FLAG_READONLY)
+        return AVERROR(EINVAL);
+
+    ptr = len ? av_malloc(len) : NULL;
+    if (len && !ptr)
+        return AVERROR(ENOMEM);
+
+    dst    = (uint8_t **)(((uint8_t *)target_obj) + o->offset);
+    lendst = (int *)(dst + 1);
+
+    av_free(*dst);
+    *dst    = ptr;
+    *lendst = len;
+    if (len)
+        memcpy(ptr, val, len);
+
+    return 0;
+}
+
+int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags)
+{
+    void *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
+        av_log(obj, AV_LOG_ERROR,
+               "The value set by option '%s' is not an image size.\n", o->name);
+        return AVERROR(EINVAL);
+    }
+    if (w<0 || h<0) {
+        av_log(obj, AV_LOG_ERROR,
+               "Invalid negative size value %dx%d for size '%s'\n", w, h, o->name);
+        return AVERROR(EINVAL);
+    }
+    *(int *)(((uint8_t *)target_obj)             + o->offset) = w;
+    *(int *)(((uint8_t *)target_obj+sizeof(int)) + o->offset) = h;
+    return 0;
+}
+
+int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags)
+{
+    void *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->type != AV_OPT_TYPE_VIDEO_RATE) {
+        av_log(obj, AV_LOG_ERROR,
+               "The value set by option '%s' is not a video rate.\n", o->name);
+        return AVERROR(EINVAL);
+    }
+    if (val.num <= 0 || val.den <= 0)
+        return AVERROR(EINVAL);
+    return set_number(obj, name, val.num, val.den, 1, search_flags);
+}
+
+static int set_format(void *obj, const char *name, int fmt, int search_flags,
+                      enum AVOptionType type, const char *desc, int nb_fmts)
+{
+    void *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0,
+                                     search_flags, &target_obj);
+    int min, max;
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->type != type) {
+        av_log(obj, AV_LOG_ERROR,
+               "The value set by option '%s' is not a %s format", name, desc);
+        return AVERROR(EINVAL);
+    }
+
+    min = FFMAX(o->min, -1);
+    max = FFMIN(o->max, nb_fmts-1);
+
+    if (fmt < min || fmt > max) {
+        av_log(obj, AV_LOG_ERROR,
+               "Value %d for parameter '%s' out of %s format range [%d - %d]\n",
+               fmt, name, desc, min, max);
+        return AVERROR(ERANGE);
+    }
+    *(int *)(((uint8_t *)target_obj) + o->offset) = fmt;
+    return 0;
+}
+
+int av_opt_set_pixel_fmt(void *obj, const char *name, enum AVPixelFormat fmt, int search_flags)
+{
+    return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_PIXEL_FMT, "pixel", AV_PIX_FMT_NB);
+}
+
+int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags)
+{
+    return set_format(obj, name, fmt, search_flags, AV_OPT_TYPE_SAMPLE_FMT, "sample", AV_SAMPLE_FMT_NB);
+}
+
+int av_opt_set_channel_layout(void *obj, const char *name, int64_t cl, int search_flags)
+{
+    void *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
+        av_log(obj, AV_LOG_ERROR,
+               "The value set by option '%s' is not a channel layout.\n", o->name);
+        return AVERROR(EINVAL);
+    }
+    *(int64_t *)(((uint8_t *)target_obj) + o->offset) = cl;
+    return 0;
+}
+
+int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val,
+                        int search_flags)
+{
+    void *target_obj;
+    AVDictionary **dst;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->flags & AV_OPT_FLAG_READONLY)
+        return AVERROR(EINVAL);
+
+    dst = (AVDictionary **)(((uint8_t *)target_obj) + o->offset);
+    av_dict_free(dst);
+    av_dict_copy(dst, val, 0);
+
+    return 0;
+}
+
+static void format_duration(char *buf, size_t size, int64_t d)
+{
+    char *e;
+
+    av_assert0(size >= 25);
+    if (d < 0 && d != INT64_MIN) {
+        *(buf++) = '-';
+        size--;
+        d = -d;
+    }
+    if (d == INT64_MAX)
+        snprintf(buf, size, "INT64_MAX");
+    else if (d == INT64_MIN)
+        snprintf(buf, size, "INT64_MIN");
+    else if (d > (int64_t)3600*1000000)
+        snprintf(buf, size, "%"PRId64":%02d:%02d.%06d", d / 3600000000,
+                 (int)((d / 60000000) % 60),
+                 (int)((d / 1000000) % 60),
+                 (int)(d % 1000000));
+    else if (d > 60*1000000)
+        snprintf(buf, size, "%d:%02d.%06d",
+                 (int)(d / 60000000),
+                 (int)((d / 1000000) % 60),
+                 (int)(d % 1000000));
+    else
+        snprintf(buf, size, "%d.%06d",
+                 (int)(d / 1000000),
+                 (int)(d % 1000000));
+    e = buf + strlen(buf);
+    while (e > buf && e[-1] == '0')
+        *(--e) = 0;
+    if (e > buf && e[-1] == '.')
+        *(--e) = 0;
+}
+
+int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
+{
+    void *dst, *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+    uint8_t *bin, buf[128];
+    int len, i, ret;
+    int64_t i64;
+
+    if (!o || !target_obj || (o->offset<=0 && o->type != AV_OPT_TYPE_CONST))
+        return AVERROR_OPTION_NOT_FOUND;
+
+    if (o->flags & AV_OPT_FLAG_DEPRECATED)
+        av_log(obj, AV_LOG_WARNING, "The \"%s\" option is deprecated: %s\n", name, o->help);
+
+    dst = (uint8_t *)target_obj + o->offset;
+
+    buf[0] = 0;
+    switch (o->type) {
+    case AV_OPT_TYPE_BOOL:
+        ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(get_bool_name(*(int *)dst), "invalid"));
+        break;
+    case AV_OPT_TYPE_FLAGS:
+        ret = snprintf(buf, sizeof(buf), "0x%08X", *(int *)dst);
+        break;
+    case AV_OPT_TYPE_INT:
+        ret = snprintf(buf, sizeof(buf), "%d", *(int *)dst);
+        break;
+    case AV_OPT_TYPE_INT64:
+        ret = snprintf(buf, sizeof(buf), "%"PRId64, *(int64_t *)dst);
+        break;
+    case AV_OPT_TYPE_UINT64:
+        ret = snprintf(buf, sizeof(buf), "%"PRIu64, *(uint64_t *)dst);
+        break;
+    case AV_OPT_TYPE_FLOAT:
+        ret = snprintf(buf, sizeof(buf), "%f", *(float *)dst);
+        break;
+    case AV_OPT_TYPE_DOUBLE:
+        ret = snprintf(buf, sizeof(buf), "%f", *(double *)dst);
+        break;
+    case AV_OPT_TYPE_VIDEO_RATE:
+    case AV_OPT_TYPE_RATIONAL:
+        ret = snprintf(buf, sizeof(buf), "%d/%d", ((AVRational *)dst)->num, ((AVRational *)dst)->den);
+        break;
+    case AV_OPT_TYPE_CONST:
+        ret = snprintf(buf, sizeof(buf), "%f", o->default_val.dbl);
+        break;
+    case AV_OPT_TYPE_STRING:
+        if (*(uint8_t **)dst) {
+            *out_val = av_strdup(*(uint8_t **)dst);
+        } else if (search_flags & AV_OPT_ALLOW_NULL) {
+            *out_val = NULL;
+            return 0;
+        } else {
+            *out_val = av_strdup("");
+        }
+        return *out_val ? 0 : AVERROR(ENOMEM);
+    case AV_OPT_TYPE_BINARY:
+        if (!*(uint8_t **)dst && (search_flags & AV_OPT_ALLOW_NULL)) {
+            *out_val = NULL;
+            return 0;
+        }
+        len = *(int *)(((uint8_t *)dst) + sizeof(uint8_t *));
+        if ((uint64_t)len * 2 + 1 > INT_MAX)
+            return AVERROR(EINVAL);
+        if (!(*out_val = av_malloc(len * 2 + 1)))
+            return AVERROR(ENOMEM);
+        if (!len) {
+            *out_val[0] = '\0';
+            return 0;
+        }
+        bin = *(uint8_t **)dst;
+        for (i = 0; i < len; i++)
+            snprintf(*out_val + i * 2, 3, "%02X", bin[i]);
+        return 0;
+    case AV_OPT_TYPE_IMAGE_SIZE:
+        ret = snprintf(buf, sizeof(buf), "%dx%d", ((int *)dst)[0], ((int *)dst)[1]);
+        break;
+    case AV_OPT_TYPE_PIXEL_FMT:
+        ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_pix_fmt_name(*(enum AVPixelFormat *)dst), "none"));
+        break;
+    case AV_OPT_TYPE_SAMPLE_FMT:
+        ret = snprintf(buf, sizeof(buf), "%s", (char *)av_x_if_null(av_get_sample_fmt_name(*(enum AVSampleFormat *)dst), "none"));
+        break;
+    case AV_OPT_TYPE_DURATION:
+        i64 = *(int64_t *)dst;
+        format_duration(buf, sizeof(buf), i64);
+        ret = strlen(buf); // no overflow possible, checked by an assert
+        break;
+    case AV_OPT_TYPE_COLOR:
+        ret = snprintf(buf, sizeof(buf), "0x%02x%02x%02x%02x",
+                       (int)((uint8_t *)dst)[0], (int)((uint8_t *)dst)[1],
+                       (int)((uint8_t *)dst)[2], (int)((uint8_t *)dst)[3]);
+        break;
+    case AV_OPT_TYPE_CHANNEL_LAYOUT:
+        i64 = *(int64_t *)dst;
+        ret = snprintf(buf, sizeof(buf), "0x%"PRIx64, i64);
+        break;
+    default:
+        return AVERROR(EINVAL);
+    }
+
+    if (ret >= sizeof(buf))
+        return AVERROR(EINVAL);
+    *out_val = av_strdup(buf);
+    return *out_val ? 0 : AVERROR(ENOMEM);
+}
+
+static int get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum,
+                      int search_flags)
+{
+    void *dst, *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+    if (!o || !target_obj)
+        goto error;
+
+    dst = ((uint8_t *)target_obj) + o->offset;
+
+    if (o_out) *o_out= o;
+
+    return read_number(o, dst, num, den, intnum);
+
+error:
+    *den    =
+    *intnum = 0;
+    return -1;
+}
+
+int av_opt_get_int(void *obj, const char *name, int search_flags, int64_t *out_val)
+{
+    int64_t intnum = 1;
+    double num = 1;
+    int ret, den = 1;
+
+    if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
+        return ret;
+    *out_val = num * intnum / den;
+    return 0;
+}
+
+int av_opt_get_double(void *obj, const char *name, int search_flags, double *out_val)
+{
+    int64_t intnum = 1;
+    double num = 1;
+    int ret, den = 1;
+
+    if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
+        return ret;
+    *out_val = num * intnum / den;
+    return 0;
+}
+
+int av_opt_get_q(void *obj, const char *name, int search_flags, AVRational *out_val)
+{
+    int64_t intnum = 1;
+    double num = 1;
+    int ret, den = 1;
+
+    if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
+        return ret;
+
+    if (num == 1.0 && (int)intnum == intnum)
+        *out_val = (AVRational){intnum, den};
+    else
+        *out_val = av_d2q(num*intnum/den, 1<<24);
+    return 0;
+}
+
+int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out)
+{
+    void *dst, *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->type != AV_OPT_TYPE_IMAGE_SIZE) {
+        av_log(obj, AV_LOG_ERROR,
+               "The value for option '%s' is not an image size.\n", name);
+        return AVERROR(EINVAL);
+    }
+
+    dst = ((uint8_t*)target_obj) + o->offset;
+    if (w_out) *w_out = *(int *)dst;
+    if (h_out) *h_out = *((int *)dst+1);
+    return 0;
+}
+
+int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val)
+{
+    int64_t intnum = 1;
+    double     num = 1;
+    int   ret, den = 1;
+
+    if ((ret = get_number(obj, name, NULL, &num, &den, &intnum, search_flags)) < 0)
+        return ret;
+
+    if (num == 1.0 && (int)intnum == intnum)
+        *out_val = (AVRational) { intnum, den };
+    else
+        *out_val = av_d2q(num * intnum / den, 1 << 24);
+    return 0;
+}
+
+static int get_format(void *obj, const char *name, int search_flags, int *out_fmt,
+                      enum AVOptionType type, const char *desc)
+{
+    void *dst, *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->type != type) {
+        av_log(obj, AV_LOG_ERROR,
+               "The value for option '%s' is not a %s format.\n", desc, name);
+        return AVERROR(EINVAL);
+    }
+
+    dst = ((uint8_t*)target_obj) + o->offset;
+    *out_fmt = *(int *)dst;
+    return 0;
+}
+
+int av_opt_get_pixel_fmt(void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt)
+{
+    return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_PIXEL_FMT, "pixel");
+}
+
+int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt)
+{
+    return get_format(obj, name, search_flags, out_fmt, AV_OPT_TYPE_SAMPLE_FMT, "sample");
+}
+
+int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *cl)
+{
+    void *dst, *target_obj;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->type != AV_OPT_TYPE_CHANNEL_LAYOUT) {
+        av_log(obj, AV_LOG_ERROR,
+               "The value for option '%s' is not a channel layout.\n", name);
+        return AVERROR(EINVAL);
+    }
+
+    dst = ((uint8_t*)target_obj) + o->offset;
+    *cl = *(int64_t *)dst;
+    return 0;
+}
+
+int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val)
+{
+    void *target_obj;
+    AVDictionary *src;
+    const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj);
+
+    if (!o || !target_obj)
+        return AVERROR_OPTION_NOT_FOUND;
+    if (o->type != AV_OPT_TYPE_DICT)
+        return AVERROR(EINVAL);
+
+    src = *(AVDictionary **)(((uint8_t *)target_obj) + o->offset);
+    av_dict_copy(out_val, src, 0);
+
+    return 0;
+}
+
+int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
+{
+    const AVOption *field = av_opt_find(obj, field_name, NULL, 0, 0);
+    const AVOption *flag  = av_opt_find(obj, flag_name,
+                                        field ? field->unit : NULL, 0, 0);
+    int64_t res;
+
+    if (!field || !flag || flag->type != AV_OPT_TYPE_CONST ||
+        av_opt_get_int(obj, field_name, 0, &res) < 0)
+        return 0;
+    return res & flag->default_val.i64;
+}
+
+static void log_value(void *av_log_obj, int level, double d)
+{
+    if      (d == INT_MAX) {
+        av_log(av_log_obj, level, "INT_MAX");
+    } else if (d == INT_MIN) {
+        av_log(av_log_obj, level, "INT_MIN");
+    } else if (d == UINT32_MAX) {
+        av_log(av_log_obj, level, "UINT32_MAX");
+    } else if (d == (double)INT64_MAX) {
+        av_log(av_log_obj, level, "I64_MAX");
+    } else if (d == INT64_MIN) {
+        av_log(av_log_obj, level, "I64_MIN");
+    } else if (d == FLT_MAX) {
+        av_log(av_log_obj, level, "FLT_MAX");
+    } else if (d == FLT_MIN) {
+        av_log(av_log_obj, level, "FLT_MIN");
+    } else if (d == -FLT_MAX) {
+        av_log(av_log_obj, level, "-FLT_MAX");
+    } else if (d == -FLT_MIN) {
+        av_log(av_log_obj, level, "-FLT_MIN");
+    } else if (d == DBL_MAX) {
+        av_log(av_log_obj, level, "DBL_MAX");
+    } else if (d == DBL_MIN) {
+        av_log(av_log_obj, level, "DBL_MIN");
+    } else if (d == -DBL_MAX) {
+        av_log(av_log_obj, level, "-DBL_MAX");
+    } else if (d == -DBL_MIN) {
+        av_log(av_log_obj, level, "-DBL_MIN");
+    } else {
+        av_log(av_log_obj, level, "%g", d);
+    }
+}
+
+static const char *get_opt_const_name(void *obj, const char *unit, int64_t value)
+{
+    const AVOption *opt = NULL;
+
+    if (!unit)
+        return NULL;
+    while ((opt = av_opt_next(obj, opt)))
+        if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
+            opt->default_val.i64 == value)
+            return opt->name;
+    return NULL;
+}
+
+static char *get_opt_flags_string(void *obj, const char *unit, int64_t value)
+{
+    const AVOption *opt = NULL;
+    char flags[512];
+
+    flags[0] = 0;
+    if (!unit)
+        return NULL;
+    while ((opt = av_opt_next(obj, opt))) {
+        if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
+            opt->default_val.i64 & value) {
+            if (flags[0])
+                av_strlcatf(flags, sizeof(flags), "+");
+            av_strlcatf(flags, sizeof(flags), "%s", opt->name);
+        }
+    }
+    if (flags[0])
+        return av_strdup(flags);
+    return NULL;
+}
+
+static void opt_list(void *obj, void *av_log_obj, const char *unit,
+                     int req_flags, int rej_flags)
+{
+    const AVOption *opt = NULL;
+    AVOptionRanges *r;
+    int i;
+
+    while ((opt = av_opt_next(obj, opt))) {
+        if (!(opt->flags & req_flags) || (opt->flags & rej_flags))
+            continue;
+
+        /* Don't print CONST's on level one.
+         * Don't print anything but CONST's on level two.
+         * Only print items from the requested unit.
+         */
+        if (!unit && opt->type == AV_OPT_TYPE_CONST)
+            continue;
+        else if (unit && opt->type != AV_OPT_TYPE_CONST)
+            continue;
+        else if (unit && opt->type == AV_OPT_TYPE_CONST && strcmp(unit, opt->unit))
+            continue;
+        else if (unit && opt->type == AV_OPT_TYPE_CONST)
+            av_log(av_log_obj, AV_LOG_INFO, "     %-15s ", opt->name);
+        else
+            av_log(av_log_obj, AV_LOG_INFO, "  %s%-17s ",
+                   (opt->flags & AV_OPT_FLAG_FILTERING_PARAM) ? "" : "-",
+                   opt->name);
+
+        switch (opt->type) {
+            case AV_OPT_TYPE_FLAGS:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<flags>");
+                break;
+            case AV_OPT_TYPE_INT:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int>");
+                break;
+            case AV_OPT_TYPE_INT64:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<int64>");
+                break;
+            case AV_OPT_TYPE_UINT64:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<uint64>");
+                break;
+            case AV_OPT_TYPE_DOUBLE:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<double>");
+                break;
+            case AV_OPT_TYPE_FLOAT:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<float>");
+                break;
+            case AV_OPT_TYPE_STRING:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<string>");
+                break;
+            case AV_OPT_TYPE_RATIONAL:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<rational>");
+                break;
+            case AV_OPT_TYPE_BINARY:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<binary>");
+                break;
+            case AV_OPT_TYPE_IMAGE_SIZE:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<image_size>");
+                break;
+            case AV_OPT_TYPE_VIDEO_RATE:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<video_rate>");
+                break;
+            case AV_OPT_TYPE_PIXEL_FMT:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<pix_fmt>");
+                break;
+            case AV_OPT_TYPE_SAMPLE_FMT:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<sample_fmt>");
+                break;
+            case AV_OPT_TYPE_DURATION:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<duration>");
+                break;
+            case AV_OPT_TYPE_COLOR:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<color>");
+                break;
+            case AV_OPT_TYPE_CHANNEL_LAYOUT:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<channel_layout>");
+                break;
+            case AV_OPT_TYPE_BOOL:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "<boolean>");
+                break;
+            case AV_OPT_TYPE_CONST:
+            default:
+                av_log(av_log_obj, AV_LOG_INFO, "%-12s ", "");
+                break;
+        }
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_FILTERING_PARAM)? 'F' : '.');
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_EXPORT)         ? 'X' : '.');
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_READONLY)       ? 'R' : '.');
+        av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_BSF_PARAM)      ? 'B' : '.');
+
+        if (opt->help)
+            av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
+
+        if (av_opt_query_ranges(&r, obj, opt->name, AV_OPT_SEARCH_FAKE_OBJ) >= 0) {
+            switch (opt->type) {
+            case AV_OPT_TYPE_INT:
+            case AV_OPT_TYPE_INT64:
+            case AV_OPT_TYPE_UINT64:
+            case AV_OPT_TYPE_DOUBLE:
+            case AV_OPT_TYPE_FLOAT:
+            case AV_OPT_TYPE_RATIONAL:
+                for (i = 0; i < r->nb_ranges; i++) {
+                    av_log(av_log_obj, AV_LOG_INFO, " (from ");
+                    log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_min);
+                    av_log(av_log_obj, AV_LOG_INFO, " to ");
+                    log_value(av_log_obj, AV_LOG_INFO, r->range[i]->value_max);
+                    av_log(av_log_obj, AV_LOG_INFO, ")");
+                }
+                break;
+            }
+            av_opt_freep_ranges(&r);
+        }
+
+        if (opt->type != AV_OPT_TYPE_CONST  &&
+            opt->type != AV_OPT_TYPE_BINARY &&
+                !((opt->type == AV_OPT_TYPE_COLOR      ||
+                   opt->type == AV_OPT_TYPE_IMAGE_SIZE ||
+                   opt->type == AV_OPT_TYPE_STRING     ||
+                   opt->type == AV_OPT_TYPE_VIDEO_RATE) &&
+                  !opt->default_val.str)) {
+            av_log(av_log_obj, AV_LOG_INFO, " (default ");
+            switch (opt->type) {
+            case AV_OPT_TYPE_BOOL:
+                av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(get_bool_name(opt->default_val.i64), "invalid"));
+                break;
+            case AV_OPT_TYPE_FLAGS: {
+                char *def_flags = get_opt_flags_string(obj, opt->unit, opt->default_val.i64);
+                if (def_flags) {
+                    av_log(av_log_obj, AV_LOG_INFO, "%s", def_flags);
+                    av_freep(&def_flags);
+                } else {
+                    av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
+                }
+                break;
+            }
+            case AV_OPT_TYPE_DURATION: {
+                char buf[25];
+                format_duration(buf, sizeof(buf), opt->default_val.i64);
+                av_log(av_log_obj, AV_LOG_INFO, "%s", buf);
+                break;
+            }
+            case AV_OPT_TYPE_INT:
+            case AV_OPT_TYPE_UINT64:
+            case AV_OPT_TYPE_INT64: {
+                const char *def_const = get_opt_const_name(obj, opt->unit, opt->default_val.i64);
+                if (def_const)
+                    av_log(av_log_obj, AV_LOG_INFO, "%s", def_const);
+                else
+                    log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
+                break;
+            }
+            case AV_OPT_TYPE_DOUBLE:
+            case AV_OPT_TYPE_FLOAT:
+                log_value(av_log_obj, AV_LOG_INFO, opt->default_val.dbl);
+                break;
+            case AV_OPT_TYPE_RATIONAL: {
+                AVRational q = av_d2q(opt->default_val.dbl, INT_MAX);
+                av_log(av_log_obj, AV_LOG_INFO, "%d/%d", q.num, q.den); }
+                break;
+            case AV_OPT_TYPE_PIXEL_FMT:
+                av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_pix_fmt_name(opt->default_val.i64), "none"));
+                break;
+            case AV_OPT_TYPE_SAMPLE_FMT:
+                av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(av_get_sample_fmt_name(opt->default_val.i64), "none"));
+                break;
+            case AV_OPT_TYPE_COLOR:
+            case AV_OPT_TYPE_IMAGE_SIZE:
+            case AV_OPT_TYPE_STRING:
+            case AV_OPT_TYPE_VIDEO_RATE:
+                av_log(av_log_obj, AV_LOG_INFO, "\"%s\"", opt->default_val.str);
+                break;
+            case AV_OPT_TYPE_CHANNEL_LAYOUT:
+                av_log(av_log_obj, AV_LOG_INFO, "0x%"PRIx64, opt->default_val.i64);
+                break;
+            }
+            av_log(av_log_obj, AV_LOG_INFO, ")");
+        }
+
+        av_log(av_log_obj, AV_LOG_INFO, "\n");
+        if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
+            opt_list(obj, av_log_obj, opt->unit, req_flags, rej_flags);
+    }
+}
+
+int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags)
+{
+    if (!obj)
+        return -1;
+
+    av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass **)obj)->class_name);
+
+    opt_list(obj, av_log_obj, NULL, req_flags, rej_flags);
+
+    return 0;
+}
+
+void av_opt_set_defaults(void *s)
+{
+    av_opt_set_defaults2(s, 0, 0);
+}
+
+void av_opt_set_defaults2(void *s, int mask, int flags)
+{
+    const AVOption *opt = NULL;
+    while ((opt = av_opt_next(s, opt))) {
+        void *dst = ((uint8_t*)s) + opt->offset;
+
+        if ((opt->flags & mask) != flags)
+            continue;
+
+        if (opt->flags & AV_OPT_FLAG_READONLY)
+            continue;
+
+        switch (opt->type) {
+            case AV_OPT_TYPE_CONST:
+                /* Nothing to be done here */
+                break;
+            case AV_OPT_TYPE_BOOL:
+            case AV_OPT_TYPE_FLAGS:
+            case AV_OPT_TYPE_INT:
+            case AV_OPT_TYPE_INT64:
+            case AV_OPT_TYPE_UINT64:
+            case AV_OPT_TYPE_DURATION:
+            case AV_OPT_TYPE_CHANNEL_LAYOUT:
+            case AV_OPT_TYPE_PIXEL_FMT:
+            case AV_OPT_TYPE_SAMPLE_FMT:
+                write_number(s, opt, dst, 1, 1, opt->default_val.i64);
+                break;
+            case AV_OPT_TYPE_DOUBLE:
+            case AV_OPT_TYPE_FLOAT: {
+                double val;
+                val = opt->default_val.dbl;
+                write_number(s, opt, dst, val, 1, 1);
+            }
+            break;
+            case AV_OPT_TYPE_RATIONAL: {
+                AVRational val;
+                val = av_d2q(opt->default_val.dbl, INT_MAX);
+                write_number(s, opt, dst, 1, val.den, val.num);
+            }
+            break;
+            case AV_OPT_TYPE_COLOR:
+                set_string_color(s, opt, opt->default_val.str, dst);
+                break;
+            case AV_OPT_TYPE_STRING:
+                set_string(s, opt, opt->default_val.str, dst);
+                break;
+            case AV_OPT_TYPE_IMAGE_SIZE:
+                set_string_image_size(s, opt, opt->default_val.str, dst);
+                break;
+            case AV_OPT_TYPE_VIDEO_RATE:
+                set_string_video_rate(s, opt, opt->default_val.str, dst);
+                break;
+            case AV_OPT_TYPE_BINARY:
+                set_string_binary(s, opt, opt->default_val.str, dst);
+                break;
+            case AV_OPT_TYPE_DICT:
+                /* Cannot set defaults for these types */
+            break;
+        default:
+            av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n",
+                   opt->type, opt->name);
+        }
+    }
+}
+
+/**
+ * Store the value in the field in ctx that is named like key.
+ * ctx must be an AVClass context, storing is done using AVOptions.
+ *
+ * @param buf the string to parse, buf will be updated to point at the
+ * separator just after the parsed key/value pair
+ * @param key_val_sep a 0-terminated list of characters used to
+ * separate key from value
+ * @param pairs_sep a 0-terminated list of characters used to separate
+ * two pairs from each other
+ * @return 0 if the key/value pair has been successfully parsed and
+ * set, or a negative value corresponding to an AVERROR code in case
+ * of error:
+ * AVERROR(EINVAL) if the key/value pair cannot be parsed,
+ * the error code issued by av_opt_set() if the key/value pair
+ * cannot be set
+ */
+static int parse_key_value_pair(void *ctx, const char **buf,
+                                const char *key_val_sep, const char *pairs_sep)
+{
+    char *key = av_get_token(buf, key_val_sep);
+    char *val;
+    int ret;
+
+    if (!key)
+        return AVERROR(ENOMEM);
+
+    if (*key && strspn(*buf, key_val_sep)) {
+        (*buf)++;
+        val = av_get_token(buf, pairs_sep);
+        if (!val) {
+            av_freep(&key);
+            return AVERROR(ENOMEM);
+        }
+    } else {
+        av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
+        av_free(key);
+        return AVERROR(EINVAL);
+    }
+
+    av_log(ctx, AV_LOG_DEBUG, "Setting entry with key '%s' to value '%s'\n", key, val);
+
+    ret = av_opt_set(ctx, key, val, AV_OPT_SEARCH_CHILDREN);
+    if (ret == AVERROR_OPTION_NOT_FOUND)
+        av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
+
+    av_free(key);
+    av_free(val);
+    return ret;
+}
+
+int av_set_options_string(void *ctx, const char *opts,
+                          const char *key_val_sep, const char *pairs_sep)
+{
+    int ret, count = 0;
+
+    if (!opts)
+        return 0;
+
+    while (*opts) {
+        if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
+            return ret;
+        count++;
+
+        if (*opts)
+            opts++;
+    }
+
+    return count;
+}
+
+#define WHITESPACES " \n\t\r"
+
+static int is_key_char(char c)
+{
+    return (unsigned)((c | 32) - 'a') < 26 ||
+           (unsigned)(c - '0') < 10 ||
+           c == '-' || c == '_' || c == '/' || c == '.';
+}
+
+/**
+ * Read a key from a string.
+ *
+ * The key consists of is_key_char characters and must be terminated by a
+ * character from the delim string; spaces are ignored.
+ *
+ * @return  0 for success (even with ellipsis), <0 for failure
+ */
+static int get_key(const char **ropts, const char *delim, char **rkey)
+{
+    const char *opts = *ropts;
+    const char *key_start, *key_end;
+
+    key_start = opts += strspn(opts, WHITESPACES);
+    while (is_key_char(*opts))
+        opts++;
+    key_end = opts;
+    opts += strspn(opts, WHITESPACES);
+    if (!*opts || !strchr(delim, *opts))
+        return AVERROR(EINVAL);
+    opts++;
+    if (!(*rkey = av_malloc(key_end - key_start + 1)))
+        return AVERROR(ENOMEM);
+    memcpy(*rkey, key_start, key_end - key_start);
+    (*rkey)[key_end - key_start] = 0;
+    *ropts = opts;
+    return 0;
+}
+
+int av_opt_get_key_value(const char **ropts,
+                         const char *key_val_sep, const char *pairs_sep,
+                         unsigned flags,
+                         char **rkey, char **rval)
+{
+    int ret;
+    char *key = NULL, *val;
+    const char *opts = *ropts;
+
+    if ((ret = get_key(&opts, key_val_sep, &key)) < 0 &&
+        !(flags & AV_OPT_FLAG_IMPLICIT_KEY))
+        return AVERROR(EINVAL);
+    if (!(val = av_get_token(&opts, pairs_sep))) {
+        av_free(key);
+        return AVERROR(ENOMEM);
+    }
+    *ropts = opts;
+    *rkey  = key;
+    *rval  = val;
+    return 0;
+}
+
+int av_opt_set_from_string(void *ctx, const char *opts,
+                           const char *const *shorthand,
+                           const char *key_val_sep, const char *pairs_sep)
+{
+    int ret, count = 0;
+    const char *dummy_shorthand = NULL;
+    char *av_uninit(parsed_key), *av_uninit(value);
+    const char *key;
+
+    if (!opts)
+        return 0;
+    if (!shorthand)
+        shorthand = &dummy_shorthand;
+
+    while (*opts) {
+        ret = av_opt_get_key_value(&opts, key_val_sep, pairs_sep,
+                                   *shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
+                                   &parsed_key, &value);
+        if (ret < 0) {
+            if (ret == AVERROR(EINVAL))
+                av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", opts);
+            else
+                av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", opts,
+                       av_err2str(ret));
+            return ret;
+        }
+        if (*opts)
+            opts++;
+        if (parsed_key) {
+            key = parsed_key;
+            while (*shorthand) /* discard all remaining shorthand */
+                shorthand++;
+        } else {
+            key = *(shorthand++);
+        }
+
+        av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
+        if ((ret = av_opt_set(ctx, key, value, 0)) < 0) {
+            if (ret == AVERROR_OPTION_NOT_FOUND)
+                av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
+            av_free(value);
+            av_free(parsed_key);
+            return ret;
+        }
+
+        av_free(value);
+        av_free(parsed_key);
+        count++;
+    }
+    return count;
+}
+
+void av_opt_free(void *obj)
+{
+    const AVOption *o = NULL;
+    while ((o = av_opt_next(obj, o))) {
+        switch (o->type) {
+        case AV_OPT_TYPE_STRING:
+        case AV_OPT_TYPE_BINARY:
+            av_freep((uint8_t *)obj + o->offset);
+            break;
+
+        case AV_OPT_TYPE_DICT:
+            av_dict_free((AVDictionary **)(((uint8_t *)obj) + o->offset));
+            break;
+
+        default:
+            break;
+        }
+    }
+}
+
+int av_opt_set_dict2(void *obj, AVDictionary **options, int search_flags)
+{
+    AVDictionaryEntry *t = NULL;
+    AVDictionary    *tmp = NULL;
+    int ret = 0;
+
+    if (!options)
+        return 0;
+
+    while ((t = av_dict_get(*options, "", t, AV_DICT_IGNORE_SUFFIX))) {
+        ret = av_opt_set(obj, t->key, t->value, search_flags);
+        if (ret == AVERROR_OPTION_NOT_FOUND)
+            ret = av_dict_set(&tmp, t->key, t->value, 0);
+        if (ret < 0) {
+            av_log(obj, AV_LOG_ERROR, "Error setting option %s to value %s.\n", t->key, t->value);
+            av_dict_free(&tmp);
+            return ret;
+        }
+        ret = 0;
+    }
+    av_dict_free(options);
+    *options = tmp;
+    return ret;
+}
+
+int av_opt_set_dict(void *obj, AVDictionary **options)
+{
+    return av_opt_set_dict2(obj, options, 0);
+}
+
+const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
+                            int opt_flags, int search_flags)
+{
+    return av_opt_find2(obj, name, unit, opt_flags, search_flags, NULL);
+}
+
+const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
+                             int opt_flags, int search_flags, void **target_obj)
+{
+    const AVClass  *c;
+    const AVOption *o = NULL;
+
+    if(!obj)
+        return NULL;
+
+    c= *(AVClass**)obj;
+
+    if (!c)
+        return NULL;
+
+    if (search_flags & AV_OPT_SEARCH_CHILDREN) {
+        if (search_flags & AV_OPT_SEARCH_FAKE_OBJ) {
+            const AVClass *child = NULL;
+            while (child = av_opt_child_class_next(c, child))
+                if (o = av_opt_find2(&child, name, unit, opt_flags, search_flags, NULL))
+                    return o;
+        } else {
+            void *child = NULL;
+            while (child = av_opt_child_next(obj, child))
+                if (o = av_opt_find2(child, name, unit, opt_flags, search_flags, target_obj))
+                    return o;
+        }
+    }
+
+    while (o = av_opt_next(obj, o)) {
+        if (!strcmp(o->name, name) && (o->flags & opt_flags) == opt_flags &&
+            ((!unit && o->type != AV_OPT_TYPE_CONST) ||
+             (unit  && o->type == AV_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)))) {
+            if (target_obj) {
+                if (!(search_flags & AV_OPT_SEARCH_FAKE_OBJ))
+                    *target_obj = obj;
+                else
+                    *target_obj = NULL;
+            }
+            return o;
+        }
+    }
+    return NULL;
+}
+
+void *av_opt_child_next(void *obj, void *prev)
+{
+    const AVClass *c = *(AVClass **)obj;
+    if (c->child_next)
+        return c->child_next(obj, prev);
+    return NULL;
+}
+
+const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev)
+{
+    if (parent->child_class_next)
+        return parent->child_class_next(prev);
+    return NULL;
+}
+
+void *av_opt_ptr(const AVClass *class, void *obj, const char *name)
+{
+    const AVOption *opt= av_opt_find2(&class, name, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ, NULL);
+    if(!opt)
+        return NULL;
+    return (uint8_t*)obj + opt->offset;
+}
+
+static int opt_size(enum AVOptionType type)
+{
+    switch(type) {
+    case AV_OPT_TYPE_BOOL:
+    case AV_OPT_TYPE_INT:
+    case AV_OPT_TYPE_FLAGS:
+        return sizeof(int);
+    case AV_OPT_TYPE_DURATION:
+    case AV_OPT_TYPE_CHANNEL_LAYOUT:
+    case AV_OPT_TYPE_INT64:
+    case AV_OPT_TYPE_UINT64:
+        return sizeof(int64_t);
+    case AV_OPT_TYPE_DOUBLE:
+        return sizeof(double);
+    case AV_OPT_TYPE_FLOAT:
+        return sizeof(float);
+    case AV_OPT_TYPE_STRING:
+        return sizeof(uint8_t*);
+    case AV_OPT_TYPE_VIDEO_RATE:
+    case AV_OPT_TYPE_RATIONAL:
+        return sizeof(AVRational);
+    case AV_OPT_TYPE_BINARY:
+        return sizeof(uint8_t*) + sizeof(int);
+    case AV_OPT_TYPE_IMAGE_SIZE:
+        return sizeof(int[2]);
+    case AV_OPT_TYPE_PIXEL_FMT:
+        return sizeof(enum AVPixelFormat);
+    case AV_OPT_TYPE_SAMPLE_FMT:
+        return sizeof(enum AVSampleFormat);
+    case AV_OPT_TYPE_COLOR:
+        return 4;
+    }
+    return AVERROR(EINVAL);
+}
+
+int av_opt_copy(void *dst, const void *src)
+{
+    const AVOption *o = NULL;
+    const AVClass *c;
+    int ret = 0;
+
+    if (!src)
+        return AVERROR(EINVAL);
+
+    c = *(AVClass **)src;
+    if (!c || c != *(AVClass **)dst)
+        return AVERROR(EINVAL);
+
+    while ((o = av_opt_next(src, o))) {
+        void *field_dst = (uint8_t *)dst + o->offset;
+        void *field_src = (uint8_t *)src + o->offset;
+        uint8_t **field_dst8 = (uint8_t **)field_dst;
+        uint8_t **field_src8 = (uint8_t **)field_src;
+
+        if (o->type == AV_OPT_TYPE_STRING) {
+            if (*field_dst8 != *field_src8)
+                av_freep(field_dst8);
+            *field_dst8 = av_strdup(*field_src8);
+            if (*field_src8 && !*field_dst8)
+                ret = AVERROR(ENOMEM);
+        } else if (o->type == AV_OPT_TYPE_BINARY) {
+            int len = *(int *)(field_src8 + 1);
+            if (*field_dst8 != *field_src8)
+                av_freep(field_dst8);
+            *field_dst8 = av_memdup(*field_src8, len);
+            if (len && !*field_dst8) {
+                ret = AVERROR(ENOMEM);
+                len = 0;
+            }
+            *(int *)(field_dst8 + 1) = len;
+        } else if (o->type == AV_OPT_TYPE_CONST) {
+            // do nothing
+        } else if (o->type == AV_OPT_TYPE_DICT) {
+            AVDictionary **sdict = (AVDictionary **) field_src;
+            AVDictionary **ddict = (AVDictionary **) field_dst;
+            if (*sdict != *ddict)
+                av_dict_free(ddict);
+            *ddict = NULL;
+            av_dict_copy(ddict, *sdict, 0);
+            if (av_dict_count(*sdict) != av_dict_count(*ddict))
+                ret = AVERROR(ENOMEM);
+        } else {
+            int size = opt_size(o->type);
+            if (size < 0)
+                ret = size;
+            else
+                memcpy(field_dst, field_src, size);
+        }
+    }
+    return ret;
+}
+
+int av_opt_query_ranges(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
+{
+    int ret;
+    const AVClass *c = *(AVClass**)obj;
+    int (*callback)(AVOptionRanges **, void *obj, const char *key, int flags) = NULL;
+
+    if (c->version > (52 << 16 | 11 << 8))
+        callback = c->query_ranges;
+
+    if (!callback)
+        callback = av_opt_query_ranges_default;
+
+    ret = callback(ranges_arg, obj, key, flags);
+    if (ret >= 0) {
+        if (!(flags & AV_OPT_MULTI_COMPONENT_RANGE))
+            ret = 1;
+        (*ranges_arg)->nb_components = ret;
+    }
+    return ret;
+}
+
+int av_opt_query_ranges_default(AVOptionRanges **ranges_arg, void *obj, const char *key, int flags)
+{
+    AVOptionRanges *ranges = av_mallocz(sizeof(*ranges));
+    AVOptionRange **range_array = av_mallocz(sizeof(void*));
+    AVOptionRange *range = av_mallocz(sizeof(*range));
+    const AVOption *field = av_opt_find(obj, key, NULL, 0, flags);
+    int ret;
+
+    *ranges_arg = NULL;
+
+    if (!ranges || !range || !range_array || !field) {
+        ret = AVERROR(ENOMEM);
+        goto fail;
+    }
+
+    ranges->range = range_array;
+    ranges->range[0] = range;
+    ranges->nb_ranges = 1;
+    ranges->nb_components = 1;
+    range->is_range = 1;
+    range->value_min = field->min;
+    range->value_max = field->max;
+
+    switch (field->type) {
+    case AV_OPT_TYPE_BOOL:
+    case AV_OPT_TYPE_INT:
+    case AV_OPT_TYPE_INT64:
+    case AV_OPT_TYPE_UINT64:
+    case AV_OPT_TYPE_PIXEL_FMT:
+    case AV_OPT_TYPE_SAMPLE_FMT:
+    case AV_OPT_TYPE_FLOAT:
+    case AV_OPT_TYPE_DOUBLE:
+    case AV_OPT_TYPE_DURATION:
+    case AV_OPT_TYPE_COLOR:
+    case AV_OPT_TYPE_CHANNEL_LAYOUT:
+        break;
+    case AV_OPT_TYPE_STRING:
+        range->component_min = 0;
+        range->component_max = 0x10FFFF; // max unicode value
+        range->value_min = -1;
+        range->value_max = INT_MAX;
+        break;
+    case AV_OPT_TYPE_RATIONAL:
+        range->component_min = INT_MIN;
+        range->component_max = INT_MAX;
+        break;
+    case AV_OPT_TYPE_IMAGE_SIZE:
+        range->component_min = 0;
+        range->component_max = INT_MAX/128/8;
+        range->value_min = 0;
+        range->value_max = INT_MAX/8;
+        break;
+    case AV_OPT_TYPE_VIDEO_RATE:
+        range->component_min = 1;
+        range->component_max = INT_MAX;
+        range->value_min = 1;
+        range->value_max = INT_MAX;
+        break;
+    default:
+        ret = AVERROR(ENOSYS);
+        goto fail;
+    }
+
+    *ranges_arg = ranges;
+    return 1;
+fail:
+    av_free(ranges);
+    av_free(range);
+    av_free(range_array);
+    return ret;
+}
+
+void av_opt_freep_ranges(AVOptionRanges **rangesp)
+{
+    int i;
+    AVOptionRanges *ranges = *rangesp;
+
+    if (!ranges)
+        return;
+
+    for (i = 0; i < ranges->nb_ranges * ranges->nb_components; i++) {
+        AVOptionRange *range = ranges->range[i];
+        if (range) {
+            av_freep(&range->str);
+            av_freep(&ranges->range[i]);
+        }
+    }
+    av_freep(&ranges->range);
+    av_freep(rangesp);
+}
+
+int av_opt_is_set_to_default(void *obj, const AVOption *o)
+{
+    int64_t i64;
+    double d, d2;
+    float f;
+    AVRational q;
+    int ret, w, h;
+    char *str;
+    void *dst;
+
+    if (!o || !obj)
+        return AVERROR(EINVAL);
+
+    dst = ((uint8_t*)obj) + o->offset;
+
+    switch (o->type) {
+    case AV_OPT_TYPE_CONST:
+        return 1;
+    case AV_OPT_TYPE_BOOL:
+    case AV_OPT_TYPE_FLAGS:
+    case AV_OPT_TYPE_PIXEL_FMT:
+    case AV_OPT_TYPE_SAMPLE_FMT:
+    case AV_OPT_TYPE_INT:
+    case AV_OPT_TYPE_CHANNEL_LAYOUT:
+    case AV_OPT_TYPE_DURATION:
+    case AV_OPT_TYPE_INT64:
+    case AV_OPT_TYPE_UINT64:
+        read_number(o, dst, NULL, NULL, &i64);
+        return o->default_val.i64 == i64;
+    case AV_OPT_TYPE_STRING:
+        str = *(char **)dst;
+        if (str == o->default_val.str) //2 NULLs
+            return 1;
+        if (!str || !o->default_val.str) //1 NULL
+            return 0;
+        return !strcmp(str, o->default_val.str);
+    case AV_OPT_TYPE_DOUBLE:
+        read_number(o, dst, &d, NULL, NULL);
+        return o->default_val.dbl == d;
+    case AV_OPT_TYPE_FLOAT:
+        read_number(o, dst, &d, NULL, NULL);
+        f = o->default_val.dbl;
+        d2 = f;
+        return d2 == d;
+    case AV_OPT_TYPE_RATIONAL:
+        q = av_d2q(o->default_val.dbl, INT_MAX);
+        return !av_cmp_q(*(AVRational*)dst, q);
+    case AV_OPT_TYPE_BINARY: {
+        struct {
+            uint8_t *data;
+            int size;
+        } tmp = {0};
+        int opt_size = *(int *)((void **)dst + 1);
+        void *opt_ptr = *(void **)dst;
+        if (!opt_size && (!o->default_val.str || !strlen(o->default_val.str)))
+            return 1;
+        if (!opt_size ||  !o->default_val.str || !strlen(o->default_val.str ))
+            return 0;
+        if (opt_size != strlen(o->default_val.str) / 2)
+            return 0;
+        ret = set_string_binary(NULL, NULL, o->default_val.str, &tmp.data);
+        if (!ret)
+            ret = !memcmp(opt_ptr, tmp.data, tmp.size);
+        av_free(tmp.data);
+        return ret;
+    }
+    case AV_OPT_TYPE_DICT:
+        /* Binary and dict have not default support yet. Any pointer is not default. */
+        return !!(*(void **)dst);
+    case AV_OPT_TYPE_IMAGE_SIZE:
+        if (!o->default_val.str || !strcmp(o->default_val.str, "none"))
+            w = h = 0;
+        else if ((ret = av_parse_video_size(&w, &h, o->default_val.str)) < 0)
+            return ret;
+        return (w == *(int *)dst) && (h == *((int *)dst+1));
+    case AV_OPT_TYPE_VIDEO_RATE:
+        q = (AVRational){0, 0};
+        if (o->default_val.str) {
+            if ((ret = av_parse_video_rate(&q, o->default_val.str)) < 0)
+                return ret;
+        }
+        return !av_cmp_q(*(AVRational*)dst, q);
+    case AV_OPT_TYPE_COLOR: {
+        uint8_t color[4] = {0, 0, 0, 0};
+        if (o->default_val.str) {
+            if ((ret = av_parse_color(color, o->default_val.str, -1, NULL)) < 0)
+                return ret;
+        }
+        return !memcmp(color, dst, sizeof(color));
+    }
+    default:
+        av_log(obj, AV_LOG_WARNING, "Not supported option type: %d, option name: %s\n", o->type, o->name);
+        break;
+    }
+    return AVERROR_PATCHWELCOME;
+}
+
+int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags)
+{
+    const AVOption *o;
+    void *target;
+    if (!obj)
+        return AVERROR(EINVAL);
+    o = av_opt_find2(obj, name, NULL, 0, search_flags, &target);
+    if (!o)
+        return AVERROR_OPTION_NOT_FOUND;
+    return av_opt_is_set_to_default(target, o);
+}
+
+int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
+                     const char key_val_sep, const char pairs_sep)
+{
+    const AVOption *o = NULL;
+    uint8_t *buf;
+    AVBPrint bprint;
+    int ret, cnt = 0;
+    const char special_chars[] = {pairs_sep, key_val_sep, '\0'};
+
+    if (pairs_sep == '\0' || key_val_sep == '\0' || pairs_sep == key_val_sep ||
+        pairs_sep == '\\' || key_val_sep == '\\') {
+        av_log(obj, AV_LOG_ERROR, "Invalid separator(s) found.");
+        return AVERROR(EINVAL);
+    }
+
+    if (!obj || !buffer)
+        return AVERROR(EINVAL);
+
+    *buffer = NULL;
+    av_bprint_init(&bprint, 64, AV_BPRINT_SIZE_UNLIMITED);
+
+    while (o = av_opt_next(obj, o)) {
+        if (o->type == AV_OPT_TYPE_CONST)
+            continue;
+        if ((flags & AV_OPT_SERIALIZE_OPT_FLAGS_EXACT) && o->flags != opt_flags)
+            continue;
+        else if (((o->flags & opt_flags) != opt_flags))
+            continue;
+        if (flags & AV_OPT_SERIALIZE_SKIP_DEFAULTS && av_opt_is_set_to_default(obj, o) > 0)
+            continue;
+        if ((ret = av_opt_get(obj, o->name, 0, &buf)) < 0) {
+            av_bprint_finalize(&bprint, NULL);
+            return ret;
+        }
+        if (buf) {
+            if (cnt++)
+                av_bprint_append_data(&bprint, &pairs_sep, 1);
+            av_bprint_escape(&bprint, o->name, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
+            av_bprint_append_data(&bprint, &key_val_sep, 1);
+            av_bprint_escape(&bprint, buf, special_chars, AV_ESCAPE_MODE_BACKSLASH, 0);
+            av_freep(&buf);
+        }
+    }
+    av_bprint_finalize(&bprint, buffer);
+    return 0;
+}
diff --git a/media/ffvpx/libavutil/opt.h b/media/ffvpx/libavutil/opt.h
new file mode 100644
index 0000000000..39f4a8dda0
--- /dev/null
+++ b/media/ffvpx/libavutil/opt.h
@@ -0,0 +1,865 @@
+/*
+ * AVOptions
+ * copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_OPT_H
+#define AVUTIL_OPT_H
+
+/**
+ * @file
+ * AVOptions
+ */
+
+#include "rational.h"
+#include "avutil.h"
+#include "dict.h"
+#include "log.h"
+#include "pixfmt.h"
+#include "samplefmt.h"
+#include "version.h"
+
+/**
+ * @defgroup avoptions AVOptions
+ * @ingroup lavu_data
+ * @{
+ * AVOptions provide a generic system to declare options on arbitrary structs
+ * ("objects"). An option can have a help text, a type and a range of possible
+ * values. Options may then be enumerated, read and written to.
+ *
+ * @section avoptions_implement Implementing AVOptions
+ * This section describes how to add AVOptions capabilities to a struct.
+ *
+ * All AVOptions-related information is stored in an AVClass. Therefore
+ * the first member of the struct should be a pointer to an AVClass describing it.
+ * The option field of the AVClass must be set to a NULL-terminated static array
+ * of AVOptions. Each AVOption must have a non-empty name, a type, a default
+ * value and for number-type AVOptions also a range of allowed values. It must
+ * also declare an offset in bytes from the start of the struct, where the field
+ * associated with this AVOption is located. Other fields in the AVOption struct
+ * should also be set when applicable, but are not required.
+ *
+ * The following example illustrates an AVOptions-enabled struct:
+ * @code
+ * typedef struct test_struct {
+ *     const AVClass *class;
+ *     int      int_opt;
+ *     char    *str_opt;
+ *     uint8_t *bin_opt;
+ *     int      bin_len;
+ * } test_struct;
+ *
+ * static const AVOption test_options[] = {
+ *   { "test_int", "This is a test option of int type.", offsetof(test_struct, int_opt),
+ *     AV_OPT_TYPE_INT, { .i64 = -1 }, INT_MIN, INT_MAX },
+ *   { "test_str", "This is a test option of string type.", offsetof(test_struct, str_opt),
+ *     AV_OPT_TYPE_STRING },
+ *   { "test_bin", "This is a test option of binary type.", offsetof(test_struct, bin_opt),
+ *     AV_OPT_TYPE_BINARY },
+ *   { NULL },
+ * };
+ *
+ * static const AVClass test_class = {
+ *     .class_name = "test class",
+ *     .item_name  = av_default_item_name,
+ *     .option     = test_options,
+ *     .version    = LIBAVUTIL_VERSION_INT,
+ * };
+ * @endcode
+ *
+ * Next, when allocating your struct, you must ensure that the AVClass pointer
+ * is set to the correct value. Then, av_opt_set_defaults() can be called to
+ * initialize defaults. After that the struct is ready to be used with the
+ * AVOptions API.
+ *
+ * When cleaning up, you may use the av_opt_free() function to automatically
+ * free all the allocated string and binary options.
+ *
+ * Continuing with the above example:
+ *
+ * @code
+ * test_struct *alloc_test_struct(void)
+ * {
+ *     test_struct *ret = av_mallocz(sizeof(*ret));
+ *     ret->class = &test_class;
+ *     av_opt_set_defaults(ret);
+ *     return ret;
+ * }
+ * void free_test_struct(test_struct **foo)
+ * {
+ *     av_opt_free(*foo);
+ *     av_freep(foo);
+ * }
+ * @endcode
+ *
+ * @subsection avoptions_implement_nesting Nesting
+ *      It may happen that an AVOptions-enabled struct contains another
+ *      AVOptions-enabled struct as a member (e.g. AVCodecContext in
+ *      libavcodec exports generic options, while its priv_data field exports
+ *      codec-specific options). In such a case, it is possible to set up the
+ *      parent struct to export a child's options. To do that, simply
+ *      implement AVClass.child_next() and AVClass.child_class_next() in the
+ *      parent struct's AVClass.
+ *      Assuming that the test_struct from above now also contains a
+ *      child_struct field:
+ *
+ *      @code
+ *      typedef struct child_struct {
+ *          AVClass *class;
+ *          int flags_opt;
+ *      } child_struct;
+ *      static const AVOption child_opts[] = {
+ *          { "test_flags", "This is a test option of flags type.",
+ *            offsetof(child_struct, flags_opt), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX },
+ *          { NULL },
+ *      };
+ *      static const AVClass child_class = {
+ *          .class_name = "child class",
+ *          .item_name  = av_default_item_name,
+ *          .option     = child_opts,
+ *          .version    = LIBAVUTIL_VERSION_INT,
+ *      };
+ *
+ *      void *child_next(void *obj, void *prev)
+ *      {
+ *          test_struct *t = obj;
+ *          if (!prev && t->child_struct)
+ *              return t->child_struct;
+ *          return NULL
+ *      }
+ *      const AVClass child_class_next(const AVClass *prev)
+ *      {
+ *          return prev ? NULL : &child_class;
+ *      }
+ *      @endcode
+ *      Putting child_next() and child_class_next() as defined above into
+ *      test_class will now make child_struct's options accessible through
+ *      test_struct (again, proper setup as described above needs to be done on
+ *      child_struct right after it is created).
+ *
+ *      From the above example it might not be clear why both child_next()
+ *      and child_class_next() are needed. The distinction is that child_next()
+ *      iterates over actually existing objects, while child_class_next()
+ *      iterates over all possible child classes. E.g. if an AVCodecContext
+ *      was initialized to use a codec which has private options, then its
+ *      child_next() will return AVCodecContext.priv_data and finish
+ *      iterating. OTOH child_class_next() on AVCodecContext.av_class will
+ *      iterate over all available codecs with private options.
+ *
+ * @subsection avoptions_implement_named_constants Named constants
+ *      It is possible to create named constants for options. Simply set the unit
+ *      field of the option the constants should apply to a string and
+ *      create the constants themselves as options of type AV_OPT_TYPE_CONST
+ *      with their unit field set to the same string.
+ *      Their default_val field should contain the value of the named
+ *      constant.
+ *      For example, to add some named constants for the test_flags option
+ *      above, put the following into the child_opts array:
+ *      @code
+ *      { "test_flags", "This is a test option of flags type.",
+ *        offsetof(child_struct, flags_opt), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, "test_unit" },
+ *      { "flag1", "This is a flag with value 16", 0, AV_OPT_TYPE_CONST, { .i64 = 16 }, 0, 0, "test_unit" },
+ *      @endcode
+ *
+ * @section avoptions_use Using AVOptions
+ * This section deals with accessing options in an AVOptions-enabled struct.
+ * Such structs in FFmpeg are e.g. AVCodecContext in libavcodec or
+ * AVFormatContext in libavformat.
+ *
+ * @subsection avoptions_use_examine Examining AVOptions
+ * The basic functions for examining options are av_opt_next(), which iterates
+ * over all options defined for one object, and av_opt_find(), which searches
+ * for an option with the given name.
+ *
+ * The situation is more complicated with nesting. An AVOptions-enabled struct
+ * may have AVOptions-enabled children. Passing the AV_OPT_SEARCH_CHILDREN flag
+ * to av_opt_find() will make the function search children recursively.
+ *
+ * For enumerating there are basically two cases. The first is when you want to
+ * get all options that may potentially exist on the struct and its children
+ * (e.g.  when constructing documentation). In that case you should call
+ * av_opt_child_class_next() recursively on the parent struct's AVClass.  The
+ * second case is when you have an already initialized struct with all its
+ * children and you want to get all options that can be actually written or read
+ * from it. In that case you should call av_opt_child_next() recursively (and
+ * av_opt_next() on each result).
+ *
+ * @subsection avoptions_use_get_set Reading and writing AVOptions
+ * When setting options, you often have a string read directly from the
+ * user. In such a case, simply passing it to av_opt_set() is enough. For
+ * non-string type options, av_opt_set() will parse the string according to the
+ * option type.
+ *
+ * Similarly av_opt_get() will read any option type and convert it to a string
+ * which will be returned. Do not forget that the string is allocated, so you
+ * have to free it with av_free().
+ *
+ * In some cases it may be more convenient to put all options into an
+ * AVDictionary and call av_opt_set_dict() on it. A specific case of this
+ * are the format/codec open functions in lavf/lavc which take a dictionary
+ * filled with option as a parameter. This makes it possible to set some options
+ * that cannot be set otherwise, since e.g. the input file format is not known
+ * before the file is actually opened.
+ */
+
+enum AVOptionType{
+    AV_OPT_TYPE_FLAGS,
+    AV_OPT_TYPE_INT,
+    AV_OPT_TYPE_INT64,
+    AV_OPT_TYPE_DOUBLE,
+    AV_OPT_TYPE_FLOAT,
+    AV_OPT_TYPE_STRING,
+    AV_OPT_TYPE_RATIONAL,
+    AV_OPT_TYPE_BINARY,  ///< offset must point to a pointer immediately followed by an int for the length
+    AV_OPT_TYPE_DICT,
+    AV_OPT_TYPE_UINT64,
+    AV_OPT_TYPE_CONST,
+    AV_OPT_TYPE_IMAGE_SIZE, ///< offset must point to two consecutive integers
+    AV_OPT_TYPE_PIXEL_FMT,
+    AV_OPT_TYPE_SAMPLE_FMT,
+    AV_OPT_TYPE_VIDEO_RATE, ///< offset must point to AVRational
+    AV_OPT_TYPE_DURATION,
+    AV_OPT_TYPE_COLOR,
+    AV_OPT_TYPE_CHANNEL_LAYOUT,
+    AV_OPT_TYPE_BOOL,
+};
+
+/**
+ * AVOption
+ */
+typedef struct AVOption {
+    const char *name;
+
+    /**
+     * short English help text
+     * @todo What about other languages?
+     */
+    const char *help;
+
+    /**
+     * The offset relative to the context structure where the option
+     * value is stored. It should be 0 for named constants.
+     */
+    int offset;
+    enum AVOptionType type;
+
+    /**
+     * the default value for scalar options
+     */
+    union {
+        int64_t i64;
+        double dbl;
+        const char *str;
+        /* TODO those are unused now */
+        AVRational q;
+    } default_val;
+    double min;                 ///< minimum valid value for the option
+    double max;                 ///< maximum valid value for the option
+
+    int flags;
+#define AV_OPT_FLAG_ENCODING_PARAM  1   ///< a generic parameter which can be set by the user for muxing or encoding
+#define AV_OPT_FLAG_DECODING_PARAM  2   ///< a generic parameter which can be set by the user for demuxing or decoding
+#define AV_OPT_FLAG_AUDIO_PARAM     8
+#define AV_OPT_FLAG_VIDEO_PARAM     16
+#define AV_OPT_FLAG_SUBTITLE_PARAM  32
+/**
+ * The option is intended for exporting values to the caller.
+ */
+#define AV_OPT_FLAG_EXPORT          64
+/**
+ * The option may not be set through the AVOptions API, only read.
+ * This flag only makes sense when AV_OPT_FLAG_EXPORT is also set.
+ */
+#define AV_OPT_FLAG_READONLY        128
+#define AV_OPT_FLAG_BSF_PARAM       (1<<8) ///< a generic parameter which can be set by the user for bit stream filtering
+#define AV_OPT_FLAG_FILTERING_PARAM (1<<16) ///< a generic parameter which can be set by the user for filtering
+#define AV_OPT_FLAG_DEPRECATED      (1<<17) ///< set if option is deprecated, users should refer to AVOption.help text for more information
+//FIXME think about enc-audio, ... style flags
+
+    /**
+     * The logical unit to which the option belongs. Non-constant
+     * options and corresponding named constants share the same
+     * unit. May be NULL.
+     */
+    const char *unit;
+} AVOption;
+
+/**
+ * A single allowed range of values, or a single allowed value.
+ */
+typedef struct AVOptionRange {
+    const char *str;
+    /**
+     * Value range.
+     * For string ranges this represents the min/max length.
+     * For dimensions this represents the min/max pixel count or width/height in multi-component case.
+     */
+    double value_min, value_max;
+    /**
+     * Value's component range.
+     * For string this represents the unicode range for chars, 0-127 limits to ASCII.
+     */
+    double component_min, component_max;
+    /**
+     * Range flag.
+     * If set to 1 the struct encodes a range, if set to 0 a single value.
+     */
+    int is_range;
+} AVOptionRange;
+
+/**
+ * List of AVOptionRange structs.
+ */
+typedef struct AVOptionRanges {
+    /**
+     * Array of option ranges.
+     *
+     * Most of option types use just one component.
+     * Following describes multi-component option types:
+     *
+     * AV_OPT_TYPE_IMAGE_SIZE:
+     * component index 0: range of pixel count (width * height).
+     * component index 1: range of width.
+     * component index 2: range of height.
+     *
+     * @note To obtain multi-component version of this structure, user must
+     *       provide AV_OPT_MULTI_COMPONENT_RANGE to av_opt_query_ranges or
+     *       av_opt_query_ranges_default function.
+     *
+     * Multi-component range can be read as in following example:
+     *
+     * @code
+     * int range_index, component_index;
+     * AVOptionRanges *ranges;
+     * AVOptionRange *range[3]; //may require more than 3 in the future.
+     * av_opt_query_ranges(&ranges, obj, key, AV_OPT_MULTI_COMPONENT_RANGE);
+     * for (range_index = 0; range_index < ranges->nb_ranges; range_index++) {
+     *     for (component_index = 0; component_index < ranges->nb_components; component_index++)
+     *         range[component_index] = ranges->range[ranges->nb_ranges * component_index + range_index];
+     *     //do something with range here.
+     * }
+     * av_opt_freep_ranges(&ranges);
+     * @endcode
+     */
+    AVOptionRange **range;
+    /**
+     * Number of ranges per component.
+     */
+    int nb_ranges;
+    /**
+     * Number of componentes.
+     */
+    int nb_components;
+} AVOptionRanges;
+
+/**
+ * Show the obj options.
+ *
+ * @param req_flags requested flags for the options to show. Show only the
+ * options for which it is opt->flags & req_flags.
+ * @param rej_flags rejected flags for the options to show. Show only the
+ * options for which it is !(opt->flags & req_flags).
+ * @param av_log_obj log context to use for showing the options
+ */
+int av_opt_show2(void *obj, void *av_log_obj, int req_flags, int rej_flags);
+
+/**
+ * Set the values of all AVOption fields to their default values.
+ *
+ * @param s an AVOption-enabled struct (its first member must be a pointer to AVClass)
+ */
+void av_opt_set_defaults(void *s);
+
+/**
+ * Set the values of all AVOption fields to their default values. Only these
+ * AVOption fields for which (opt->flags & mask) == flags will have their
+ * default applied to s.
+ *
+ * @param s an AVOption-enabled struct (its first member must be a pointer to AVClass)
+ * @param mask combination of AV_OPT_FLAG_*
+ * @param flags combination of AV_OPT_FLAG_*
+ */
+void av_opt_set_defaults2(void *s, int mask, int flags);
+
+/**
+ * Parse the key/value pairs list in opts. For each key/value pair
+ * found, stores the value in the field in ctx that is named like the
+ * key. ctx must be an AVClass context, storing is done using
+ * AVOptions.
+ *
+ * @param opts options string to parse, may be NULL
+ * @param key_val_sep a 0-terminated list of characters used to
+ * separate key from value
+ * @param pairs_sep a 0-terminated list of characters used to separate
+ * two pairs from each other
+ * @return the number of successfully set key/value pairs, or a negative
+ * value corresponding to an AVERROR code in case of error:
+ * AVERROR(EINVAL) if opts cannot be parsed,
+ * the error code issued by av_opt_set() if a key/value pair
+ * cannot be set
+ */
+int av_set_options_string(void *ctx, const char *opts,
+                          const char *key_val_sep, const char *pairs_sep);
+
+/**
+ * Parse the key-value pairs list in opts. For each key=value pair found,
+ * set the value of the corresponding option in ctx.
+ *
+ * @param ctx          the AVClass object to set options on
+ * @param opts         the options string, key-value pairs separated by a
+ *                     delimiter
+ * @param shorthand    a NULL-terminated array of options names for shorthand
+ *                     notation: if the first field in opts has no key part,
+ *                     the key is taken from the first element of shorthand;
+ *                     then again for the second, etc., until either opts is
+ *                     finished, shorthand is finished or a named option is
+ *                     found; after that, all options must be named
+ * @param key_val_sep  a 0-terminated list of characters used to separate
+ *                     key from value, for example '='
+ * @param pairs_sep    a 0-terminated list of characters used to separate
+ *                     two pairs from each other, for example ':' or ','
+ * @return  the number of successfully set key=value pairs, or a negative
+ *          value corresponding to an AVERROR code in case of error:
+ *          AVERROR(EINVAL) if opts cannot be parsed,
+ *          the error code issued by av_set_string3() if a key/value pair
+ *          cannot be set
+ *
+ * Options names must use only the following characters: a-z A-Z 0-9 - . / _
+ * Separators must use characters distinct from option names and from each
+ * other.
+ */
+int av_opt_set_from_string(void *ctx, const char *opts,
+                           const char *const *shorthand,
+                           const char *key_val_sep, const char *pairs_sep);
+/**
+ * Free all allocated objects in obj.
+ */
+void av_opt_free(void *obj);
+
+/**
+ * Check whether a particular flag is set in a flags field.
+ *
+ * @param field_name the name of the flag field option
+ * @param flag_name the name of the flag to check
+ * @return non-zero if the flag is set, zero if the flag isn't set,
+ *         isn't of the right type, or the flags field doesn't exist.
+ */
+int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name);
+
+/**
+ * Set all the options from a given dictionary on an object.
+ *
+ * @param obj a struct whose first element is a pointer to AVClass
+ * @param options options to process. This dictionary will be freed and replaced
+ *                by a new one containing all options not found in obj.
+ *                Of course this new dictionary needs to be freed by caller
+ *                with av_dict_free().
+ *
+ * @return 0 on success, a negative AVERROR if some option was found in obj,
+ *         but could not be set.
+ *
+ * @see av_dict_copy()
+ */
+int av_opt_set_dict(void *obj, struct AVDictionary **options);
+
+
+/**
+ * Set all the options from a given dictionary on an object.
+ *
+ * @param obj a struct whose first element is a pointer to AVClass
+ * @param options options to process. This dictionary will be freed and replaced
+ *                by a new one containing all options not found in obj.
+ *                Of course this new dictionary needs to be freed by caller
+ *                with av_dict_free().
+ * @param search_flags A combination of AV_OPT_SEARCH_*.
+ *
+ * @return 0 on success, a negative AVERROR if some option was found in obj,
+ *         but could not be set.
+ *
+ * @see av_dict_copy()
+ */
+int av_opt_set_dict2(void *obj, struct AVDictionary **options, int search_flags);
+
+/**
+ * Extract a key-value pair from the beginning of a string.
+ *
+ * @param ropts        pointer to the options string, will be updated to
+ *                     point to the rest of the string (one of the pairs_sep
+ *                     or the final NUL)
+ * @param key_val_sep  a 0-terminated list of characters used to separate
+ *                     key from value, for example '='
+ * @param pairs_sep    a 0-terminated list of characters used to separate
+ *                     two pairs from each other, for example ':' or ','
+ * @param flags        flags; see the AV_OPT_FLAG_* values below
+ * @param rkey         parsed key; must be freed using av_free()
+ * @param rval         parsed value; must be freed using av_free()
+ *
+ * @return  >=0 for success, or a negative value corresponding to an
+ *          AVERROR code in case of error; in particular:
+ *          AVERROR(EINVAL) if no key is present
+ *
+ */
+int av_opt_get_key_value(const char **ropts,
+                         const char *key_val_sep, const char *pairs_sep,
+                         unsigned flags,
+                         char **rkey, char **rval);
+
+enum {
+
+    /**
+     * Accept to parse a value without a key; the key will then be returned
+     * as NULL.
+     */
+    AV_OPT_FLAG_IMPLICIT_KEY = 1,
+};
+
+/**
+ * @defgroup opt_eval_funcs Evaluating option strings
+ * @{
+ * This group of functions can be used to evaluate option strings
+ * and get numbers out of them. They do the same thing as av_opt_set(),
+ * except the result is written into the caller-supplied pointer.
+ *
+ * @param obj a struct whose first element is a pointer to AVClass.
+ * @param o an option for which the string is to be evaluated.
+ * @param val string to be evaluated.
+ * @param *_out value of the string will be written here.
+ *
+ * @return 0 on success, a negative number on failure.
+ */
+int av_opt_eval_flags (void *obj, const AVOption *o, const char *val, int        *flags_out);
+int av_opt_eval_int   (void *obj, const AVOption *o, const char *val, int        *int_out);
+int av_opt_eval_int64 (void *obj, const AVOption *o, const char *val, int64_t    *int64_out);
+int av_opt_eval_float (void *obj, const AVOption *o, const char *val, float      *float_out);
+int av_opt_eval_double(void *obj, const AVOption *o, const char *val, double     *double_out);
+int av_opt_eval_q     (void *obj, const AVOption *o, const char *val, AVRational *q_out);
+/**
+ * @}
+ */
+
+#define AV_OPT_SEARCH_CHILDREN   (1 << 0) /**< Search in possible children of the
+                                               given object first. */
+/**
+ *  The obj passed to av_opt_find() is fake -- only a double pointer to AVClass
+ *  instead of a required pointer to a struct containing AVClass. This is
+ *  useful for searching for options without needing to allocate the corresponding
+ *  object.
+ */
+#define AV_OPT_SEARCH_FAKE_OBJ   (1 << 1)
+
+/**
+ *  In av_opt_get, return NULL if the option has a pointer type and is set to NULL,
+ *  rather than returning an empty string.
+ */
+#define AV_OPT_ALLOW_NULL (1 << 2)
+
+/**
+ *  Allows av_opt_query_ranges and av_opt_query_ranges_default to return more than
+ *  one component for certain option types.
+ *  @see AVOptionRanges for details.
+ */
+#define AV_OPT_MULTI_COMPONENT_RANGE (1 << 12)
+
+/**
+ * Look for an option in an object. Consider only options which
+ * have all the specified flags set.
+ *
+ * @param[in] obj A pointer to a struct whose first element is a
+ *                pointer to an AVClass.
+ *                Alternatively a double pointer to an AVClass, if
+ *                AV_OPT_SEARCH_FAKE_OBJ search flag is set.
+ * @param[in] name The name of the option to look for.
+ * @param[in] unit When searching for named constants, name of the unit
+ *                 it belongs to.
+ * @param opt_flags Find only options with all the specified flags set (AV_OPT_FLAG).
+ * @param search_flags A combination of AV_OPT_SEARCH_*.
+ *
+ * @return A pointer to the option found, or NULL if no option
+ *         was found.
+ *
+ * @note Options found with AV_OPT_SEARCH_CHILDREN flag may not be settable
+ * directly with av_opt_set(). Use special calls which take an options
+ * AVDictionary (e.g. avformat_open_input()) to set options found with this
+ * flag.
+ */
+const AVOption *av_opt_find(void *obj, const char *name, const char *unit,
+                            int opt_flags, int search_flags);
+
+/**
+ * Look for an option in an object. Consider only options which
+ * have all the specified flags set.
+ *
+ * @param[in] obj A pointer to a struct whose first element is a
+ *                pointer to an AVClass.
+ *                Alternatively a double pointer to an AVClass, if
+ *                AV_OPT_SEARCH_FAKE_OBJ search flag is set.
+ * @param[in] name The name of the option to look for.
+ * @param[in] unit When searching for named constants, name of the unit
+ *                 it belongs to.
+ * @param opt_flags Find only options with all the specified flags set (AV_OPT_FLAG).
+ * @param search_flags A combination of AV_OPT_SEARCH_*.
+ * @param[out] target_obj if non-NULL, an object to which the option belongs will be
+ * written here. It may be different from obj if AV_OPT_SEARCH_CHILDREN is present
+ * in search_flags. This parameter is ignored if search_flags contain
+ * AV_OPT_SEARCH_FAKE_OBJ.
+ *
+ * @return A pointer to the option found, or NULL if no option
+ *         was found.
+ */
+const AVOption *av_opt_find2(void *obj, const char *name, const char *unit,
+                             int opt_flags, int search_flags, void **target_obj);
+
+/**
+ * Iterate over all AVOptions belonging to obj.
+ *
+ * @param obj an AVOptions-enabled struct or a double pointer to an
+ *            AVClass describing it.
+ * @param prev result of the previous call to av_opt_next() on this object
+ *             or NULL
+ * @return next AVOption or NULL
+ */
+const AVOption *av_opt_next(const void *obj, const AVOption *prev);
+
+/**
+ * Iterate over AVOptions-enabled children of obj.
+ *
+ * @param prev result of a previous call to this function or NULL
+ * @return next AVOptions-enabled child or NULL
+ */
+void *av_opt_child_next(void *obj, void *prev);
+
+/**
+ * Iterate over potential AVOptions-enabled children of parent.
+ *
+ * @param prev result of a previous call to this function or NULL
+ * @return AVClass corresponding to next potential child or NULL
+ */
+const AVClass *av_opt_child_class_next(const AVClass *parent, const AVClass *prev);
+
+/**
+ * @defgroup opt_set_funcs Option setting functions
+ * @{
+ * Those functions set the field of obj with the given name to value.
+ *
+ * @param[in] obj A struct whose first element is a pointer to an AVClass.
+ * @param[in] name the name of the field to set
+ * @param[in] val The value to set. In case of av_opt_set() if the field is not
+ * of a string type, then the given string is parsed.
+ * SI postfixes and some named scalars are supported.
+ * If the field is of a numeric type, it has to be a numeric or named
+ * scalar. Behavior with more than one scalar and +- infix operators
+ * is undefined.
+ * If the field is of a flags type, it has to be a sequence of numeric
+ * scalars or named flags separated by '+' or '-'. Prefixing a flag
+ * with '+' causes it to be set without affecting the other flags;
+ * similarly, '-' unsets a flag.
+ * @param search_flags flags passed to av_opt_find2. I.e. if AV_OPT_SEARCH_CHILDREN
+ * is passed here, then the option may be set on a child of obj.
+ *
+ * @return 0 if the value has been set, or an AVERROR code in case of
+ * error:
+ * AVERROR_OPTION_NOT_FOUND if no matching option exists
+ * AVERROR(ERANGE) if the value is out of range
+ * AVERROR(EINVAL) if the value is not valid
+ */
+int av_opt_set         (void *obj, const char *name, const char *val, int search_flags);
+int av_opt_set_int     (void *obj, const char *name, int64_t     val, int search_flags);
+int av_opt_set_double  (void *obj, const char *name, double      val, int search_flags);
+int av_opt_set_q       (void *obj, const char *name, AVRational  val, int search_flags);
+int av_opt_set_bin     (void *obj, const char *name, const uint8_t *val, int size, int search_flags);
+int av_opt_set_image_size(void *obj, const char *name, int w, int h, int search_flags);
+int av_opt_set_pixel_fmt (void *obj, const char *name, enum AVPixelFormat fmt, int search_flags);
+int av_opt_set_sample_fmt(void *obj, const char *name, enum AVSampleFormat fmt, int search_flags);
+int av_opt_set_video_rate(void *obj, const char *name, AVRational val, int search_flags);
+int av_opt_set_channel_layout(void *obj, const char *name, int64_t ch_layout, int search_flags);
+/**
+ * @note Any old dictionary present is discarded and replaced with a copy of the new one. The
+ * caller still owns val is and responsible for freeing it.
+ */
+int av_opt_set_dict_val(void *obj, const char *name, const AVDictionary *val, int search_flags);
+
+/**
+ * Set a binary option to an integer list.
+ *
+ * @param obj    AVClass object to set options on
+ * @param name   name of the binary option
+ * @param val    pointer to an integer list (must have the correct type with
+ *               regard to the contents of the list)
+ * @param term   list terminator (usually 0 or -1)
+ * @param flags  search flags
+ */
+#define av_opt_set_int_list(obj, name, val, term, flags) \
+    (av_int_list_length(val, term) > INT_MAX / sizeof(*(val)) ? \
+     AVERROR(EINVAL) : \
+     av_opt_set_bin(obj, name, (const uint8_t *)(val), \
+                    av_int_list_length(val, term) * sizeof(*(val)), flags))
+
+/**
+ * @}
+ */
+
+/**
+ * @defgroup opt_get_funcs Option getting functions
+ * @{
+ * Those functions get a value of the option with the given name from an object.
+ *
+ * @param[in] obj a struct whose first element is a pointer to an AVClass.
+ * @param[in] name name of the option to get.
+ * @param[in] search_flags flags passed to av_opt_find2. I.e. if AV_OPT_SEARCH_CHILDREN
+ * is passed here, then the option may be found in a child of obj.
+ * @param[out] out_val value of the option will be written here
+ * @return >=0 on success, a negative error code otherwise
+ */
+/**
+ * @note the returned string will be av_malloc()ed and must be av_free()ed by the caller
+ *
+ * @note if AV_OPT_ALLOW_NULL is set in search_flags in av_opt_get, and the option has
+ * AV_OPT_TYPE_STRING or AV_OPT_TYPE_BINARY and is set to NULL, *out_val will be set
+ * to NULL instead of an allocated empty string.
+ */
+int av_opt_get         (void *obj, const char *name, int search_flags, uint8_t   **out_val);
+int av_opt_get_int     (void *obj, const char *name, int search_flags, int64_t    *out_val);
+int av_opt_get_double  (void *obj, const char *name, int search_flags, double     *out_val);
+int av_opt_get_q       (void *obj, const char *name, int search_flags, AVRational *out_val);
+int av_opt_get_image_size(void *obj, const char *name, int search_flags, int *w_out, int *h_out);
+int av_opt_get_pixel_fmt (void *obj, const char *name, int search_flags, enum AVPixelFormat *out_fmt);
+int av_opt_get_sample_fmt(void *obj, const char *name, int search_flags, enum AVSampleFormat *out_fmt);
+int av_opt_get_video_rate(void *obj, const char *name, int search_flags, AVRational *out_val);
+int av_opt_get_channel_layout(void *obj, const char *name, int search_flags, int64_t *ch_layout);
+/**
+ * @param[out] out_val The returned dictionary is a copy of the actual value and must
+ * be freed with av_dict_free() by the caller
+ */
+int av_opt_get_dict_val(void *obj, const char *name, int search_flags, AVDictionary **out_val);
+/**
+ * @}
+ */
+/**
+ * Gets a pointer to the requested field in a struct.
+ * This function allows accessing a struct even when its fields are moved or
+ * renamed since the application making the access has been compiled,
+ *
+ * @returns a pointer to the field, it can be cast to the correct type and read
+ *          or written to.
+ */
+void *av_opt_ptr(const AVClass *avclass, void *obj, const char *name);
+
+/**
+ * Free an AVOptionRanges struct and set it to NULL.
+ */
+void av_opt_freep_ranges(AVOptionRanges **ranges);
+
+/**
+ * Get a list of allowed ranges for the given option.
+ *
+ * The returned list may depend on other fields in obj like for example profile.
+ *
+ * @param flags is a bitmask of flags, undefined flags should not be set and should be ignored
+ *              AV_OPT_SEARCH_FAKE_OBJ indicates that the obj is a double pointer to a AVClass instead of a full instance
+ *              AV_OPT_MULTI_COMPONENT_RANGE indicates that function may return more than one component, @see AVOptionRanges
+ *
+ * The result must be freed with av_opt_freep_ranges.
+ *
+ * @return number of compontents returned on success, a negative errro code otherwise
+ */
+int av_opt_query_ranges(AVOptionRanges **, void *obj, const char *key, int flags);
+
+/**
+ * Copy options from src object into dest object.
+ *
+ * Options that require memory allocation (e.g. string or binary) are malloc'ed in dest object.
+ * Original memory allocated for such options is freed unless both src and dest options points to the same memory.
+ *
+ * @param dest Object to copy from
+ * @param src  Object to copy into
+ * @return 0 on success, negative on error
+ */
+int av_opt_copy(void *dest, const void *src);
+
+/**
+ * Get a default list of allowed ranges for the given option.
+ *
+ * This list is constructed without using the AVClass.query_ranges() callback
+ * and can be used as fallback from within the callback.
+ *
+ * @param flags is a bitmask of flags, undefined flags should not be set and should be ignored
+ *              AV_OPT_SEARCH_FAKE_OBJ indicates that the obj is a double pointer to a AVClass instead of a full instance
+ *              AV_OPT_MULTI_COMPONENT_RANGE indicates that function may return more than one component, @see AVOptionRanges
+ *
+ * The result must be freed with av_opt_free_ranges.
+ *
+ * @return number of compontents returned on success, a negative errro code otherwise
+ */
+int av_opt_query_ranges_default(AVOptionRanges **, void *obj, const char *key, int flags);
+
+/**
+ * Check if given option is set to its default value.
+ *
+ * Options o must belong to the obj. This function must not be called to check child's options state.
+ * @see av_opt_is_set_to_default_by_name().
+ *
+ * @param obj  AVClass object to check option on
+ * @param o    option to be checked
+ * @return     >0 when option is set to its default,
+ *              0 when option is not set its default,
+ *             <0 on error
+ */
+int av_opt_is_set_to_default(void *obj, const AVOption *o);
+
+/**
+ * Check if given option is set to its default value.
+ *
+ * @param obj          AVClass object to check option on
+ * @param name         option name
+ * @param search_flags combination of AV_OPT_SEARCH_*
+ * @return             >0 when option is set to its default,
+ *                     0 when option is not set its default,
+ *                     <0 on error
+ */
+int av_opt_is_set_to_default_by_name(void *obj, const char *name, int search_flags);
+
+
+#define AV_OPT_SERIALIZE_SKIP_DEFAULTS              0x00000001  ///< Serialize options that are not set to default values only.
+#define AV_OPT_SERIALIZE_OPT_FLAGS_EXACT            0x00000002  ///< Serialize options that exactly match opt_flags only.
+
+/**
+ * Serialize object's options.
+ *
+ * Create a string containing object's serialized options.
+ * Such string may be passed back to av_opt_set_from_string() in order to restore option values.
+ * A key/value or pairs separator occurring in the serialized value or
+ * name string are escaped through the av_escape() function.
+ *
+ * @param[in]  obj           AVClass object to serialize
+ * @param[in]  opt_flags     serialize options with all the specified flags set (AV_OPT_FLAG)
+ * @param[in]  flags         combination of AV_OPT_SERIALIZE_* flags
+ * @param[out] buffer        Pointer to buffer that will be allocated with string containg serialized options.
+ *                           Buffer must be freed by the caller when is no longer needed.
+ * @param[in]  key_val_sep   character used to separate key from value
+ * @param[in]  pairs_sep     character used to separate two pairs from each other
+ * @return                   >= 0 on success, negative on error
+ * @warning Separators cannot be neither '\\' nor '\0'. They also cannot be the same.
+ */
+int av_opt_serialize(void *obj, int opt_flags, int flags, char **buffer,
+                     const char key_val_sep, const char pairs_sep);
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_OPT_H */
diff --git a/media/ffvpx/libavutil/parseutils.c b/media/ffvpx/libavutil/parseutils.c
new file mode 100644
index 0000000000..5a478a3b86
--- /dev/null
+++ b/media/ffvpx/libavutil/parseutils.c
@@ -0,0 +1,786 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * misc parsing utilities
+ */
+
+#include <time.h>
+
+#include "avstring.h"
+#include "avutil.h"
+#include "common.h"
+#include "eval.h"
+#include "log.h"
+/* #include "random_seed.h" */
+#include "time_internal.h"
+#include "parseutils.h"
+#include "fftime.h"
+
+#ifdef TEST
+
+#define av_get_random_seed av_get_random_seed_deterministic
+static uint32_t av_get_random_seed_deterministic(void);
+
+#define av_gettime() 1331972053200000
+
+#endif
+
+int av_parse_ratio(AVRational *q, const char *str, int max,
+                   int log_offset, void *log_ctx)
+{
+    char c;
+    int ret;
+
+    if (sscanf(str, "%d:%d%c", &q->num, &q->den, &c) != 2) {
+        double d;
+        ret = av_expr_parse_and_eval(&d, str, NULL, NULL,
+                                     NULL, NULL, NULL, NULL,
+                                     NULL, log_offset, log_ctx);
+        if (ret < 0)
+            return ret;
+        *q = av_d2q(d, max);
+    } else {
+        av_reduce(&q->num, &q->den, q->num, q->den, max);
+    }
+
+    return 0;
+}
+
+typedef struct VideoSizeAbbr {
+    const char *abbr;
+    int width, height;
+} VideoSizeAbbr;
+
+typedef struct VideoRateAbbr {
+    const char *abbr;
+    AVRational rate;
+} VideoRateAbbr;
+
+static const VideoSizeAbbr video_size_abbrs[] = {
+    { "ntsc",      720, 480 },
+    { "pal",       720, 576 },
+    { "qntsc",     352, 240 }, /* VCD compliant NTSC */
+    { "qpal",      352, 288 }, /* VCD compliant PAL */
+    { "sntsc",     640, 480 }, /* square pixel NTSC */
+    { "spal",      768, 576 }, /* square pixel PAL */
+    { "film",      352, 240 },
+    { "ntsc-film", 352, 240 },
+    { "sqcif",     128,  96 },
+    { "qcif",      176, 144 },
+    { "cif",       352, 288 },
+    { "4cif",      704, 576 },
+    { "16cif",    1408,1152 },
+    { "qqvga",     160, 120 },
+    { "qvga",      320, 240 },
+    { "vga",       640, 480 },
+    { "svga",      800, 600 },
+    { "xga",      1024, 768 },
+    { "uxga",     1600,1200 },
+    { "qxga",     2048,1536 },
+    { "sxga",     1280,1024 },
+    { "qsxga",    2560,2048 },
+    { "hsxga",    5120,4096 },
+    { "wvga",      852, 480 },
+    { "wxga",     1366, 768 },
+    { "wsxga",    1600,1024 },
+    { "wuxga",    1920,1200 },
+    { "woxga",    2560,1600 },
+    { "wqsxga",   3200,2048 },
+    { "wquxga",   3840,2400 },
+    { "whsxga",   6400,4096 },
+    { "whuxga",   7680,4800 },
+    { "cga",       320, 200 },
+    { "ega",       640, 350 },
+    { "hd480",     852, 480 },
+    { "hd720",    1280, 720 },
+    { "hd1080",   1920,1080 },
+    { "2k",       2048,1080 }, /* Digital Cinema System Specification */
+    { "2kdci",    2048,1080 },
+    { "2kflat",   1998,1080 },
+    { "2kscope",  2048, 858 },
+    { "4k",       4096,2160 }, /* Digital Cinema System Specification */
+    { "4kdci",    4096,2160 },
+    { "4kflat",   3996,2160 },
+    { "4kscope",  4096,1716 },
+    { "nhd",       640,360  },
+    { "hqvga",     240,160  },
+    { "wqvga",     400,240  },
+    { "fwqvga",    432,240  },
+    { "hvga",      480,320  },
+    { "qhd",       960,540  },
+    { "uhd2160",  3840,2160 },
+    { "uhd4320",  7680,4320 },
+};
+
+static const VideoRateAbbr video_rate_abbrs[]= {
+    { "ntsc",      { 30000, 1001 } },
+    { "pal",       {    25,    1 } },
+    { "qntsc",     { 30000, 1001 } }, /* VCD compliant NTSC */
+    { "qpal",      {    25,    1 } }, /* VCD compliant PAL */
+    { "sntsc",     { 30000, 1001 } }, /* square pixel NTSC */
+    { "spal",      {    25,    1 } }, /* square pixel PAL */
+    { "film",      {    24,    1 } },
+    { "ntsc-film", { 24000, 1001 } },
+};
+
+static const char *months[12] = {
+    "january", "february", "march", "april", "may", "june", "july", "august",
+    "september", "october", "november", "december"
+};
+
+int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str)
+{
+    int i;
+    int n = FF_ARRAY_ELEMS(video_size_abbrs);
+    const char *p;
+    int width = 0, height = 0;
+
+    for (i = 0; i < n; i++) {
+        if (!strcmp(video_size_abbrs[i].abbr, str)) {
+            width  = video_size_abbrs[i].width;
+            height = video_size_abbrs[i].height;
+            break;
+        }
+    }
+    if (i == n) {
+        width = strtol(str, (void*)&p, 10);
+        if (*p)
+            p++;
+        height = strtol(p, (void*)&p, 10);
+
+        /* trailing extraneous data detected, like in 123x345foobar */
+        if (*p)
+            return AVERROR(EINVAL);
+    }
+    if (width <= 0 || height <= 0)
+        return AVERROR(EINVAL);
+    *width_ptr  = width;
+    *height_ptr = height;
+    return 0;
+}
+
+int av_parse_video_rate(AVRational *rate, const char *arg)
+{
+    int i, ret;
+    int n = FF_ARRAY_ELEMS(video_rate_abbrs);
+
+    /* First, we check our abbreviation table */
+    for (i = 0; i < n; ++i)
+        if (!strcmp(video_rate_abbrs[i].abbr, arg)) {
+            *rate = video_rate_abbrs[i].rate;
+            return 0;
+        }
+
+    /* Then, we try to parse it as fraction */
+    if ((ret = av_parse_ratio_quiet(rate, arg, 1001000)) < 0)
+        return ret;
+    if (rate->num <= 0 || rate->den <= 0)
+        return AVERROR(EINVAL);
+    return 0;
+}
+
+typedef struct ColorEntry {
+    const char *name;            ///< a string representing the name of the color
+    uint8_t     rgb_color[3];    ///< RGB values for the color
+} ColorEntry;
+
+static const ColorEntry color_table[] = {
+    { "AliceBlue",            { 0xF0, 0xF8, 0xFF } },
+    { "AntiqueWhite",         { 0xFA, 0xEB, 0xD7 } },
+    { "Aqua",                 { 0x00, 0xFF, 0xFF } },
+    { "Aquamarine",           { 0x7F, 0xFF, 0xD4 } },
+    { "Azure",                { 0xF0, 0xFF, 0xFF } },
+    { "Beige",                { 0xF5, 0xF5, 0xDC } },
+    { "Bisque",               { 0xFF, 0xE4, 0xC4 } },
+    { "Black",                { 0x00, 0x00, 0x00 } },
+    { "BlanchedAlmond",       { 0xFF, 0xEB, 0xCD } },
+    { "Blue",                 { 0x00, 0x00, 0xFF } },
+    { "BlueViolet",           { 0x8A, 0x2B, 0xE2 } },
+    { "Brown",                { 0xA5, 0x2A, 0x2A } },
+    { "BurlyWood",            { 0xDE, 0xB8, 0x87 } },
+    { "CadetBlue",            { 0x5F, 0x9E, 0xA0 } },
+    { "Chartreuse",           { 0x7F, 0xFF, 0x00 } },
+    { "Chocolate",            { 0xD2, 0x69, 0x1E } },
+    { "Coral",                { 0xFF, 0x7F, 0x50 } },
+    { "CornflowerBlue",       { 0x64, 0x95, 0xED } },
+    { "Cornsilk",             { 0xFF, 0xF8, 0xDC } },
+    { "Crimson",              { 0xDC, 0x14, 0x3C } },
+    { "Cyan",                 { 0x00, 0xFF, 0xFF } },
+    { "DarkBlue",             { 0x00, 0x00, 0x8B } },
+    { "DarkCyan",             { 0x00, 0x8B, 0x8B } },
+    { "DarkGoldenRod",        { 0xB8, 0x86, 0x0B } },
+    { "DarkGray",             { 0xA9, 0xA9, 0xA9 } },
+    { "DarkGreen",            { 0x00, 0x64, 0x00 } },
+    { "DarkKhaki",            { 0xBD, 0xB7, 0x6B } },
+    { "DarkMagenta",          { 0x8B, 0x00, 0x8B } },
+    { "DarkOliveGreen",       { 0x55, 0x6B, 0x2F } },
+    { "Darkorange",           { 0xFF, 0x8C, 0x00 } },
+    { "DarkOrchid",           { 0x99, 0x32, 0xCC } },
+    { "DarkRed",              { 0x8B, 0x00, 0x00 } },
+    { "DarkSalmon",           { 0xE9, 0x96, 0x7A } },
+    { "DarkSeaGreen",         { 0x8F, 0xBC, 0x8F } },
+    { "DarkSlateBlue",        { 0x48, 0x3D, 0x8B } },
+    { "DarkSlateGray",        { 0x2F, 0x4F, 0x4F } },
+    { "DarkTurquoise",        { 0x00, 0xCE, 0xD1 } },
+    { "DarkViolet",           { 0x94, 0x00, 0xD3 } },
+    { "DeepPink",             { 0xFF, 0x14, 0x93 } },
+    { "DeepSkyBlue",          { 0x00, 0xBF, 0xFF } },
+    { "DimGray",              { 0x69, 0x69, 0x69 } },
+    { "DodgerBlue",           { 0x1E, 0x90, 0xFF } },
+    { "FireBrick",            { 0xB2, 0x22, 0x22 } },
+    { "FloralWhite",          { 0xFF, 0xFA, 0xF0 } },
+    { "ForestGreen",          { 0x22, 0x8B, 0x22 } },
+    { "Fuchsia",              { 0xFF, 0x00, 0xFF } },
+    { "Gainsboro",            { 0xDC, 0xDC, 0xDC } },
+    { "GhostWhite",           { 0xF8, 0xF8, 0xFF } },
+    { "Gold",                 { 0xFF, 0xD7, 0x00 } },
+    { "GoldenRod",            { 0xDA, 0xA5, 0x20 } },
+    { "Gray",                 { 0x80, 0x80, 0x80 } },
+    { "Green",                { 0x00, 0x80, 0x00 } },
+    { "GreenYellow",          { 0xAD, 0xFF, 0x2F } },
+    { "HoneyDew",             { 0xF0, 0xFF, 0xF0 } },
+    { "HotPink",              { 0xFF, 0x69, 0xB4 } },
+    { "IndianRed",            { 0xCD, 0x5C, 0x5C } },
+    { "Indigo",               { 0x4B, 0x00, 0x82 } },
+    { "Ivory",                { 0xFF, 0xFF, 0xF0 } },
+    { "Khaki",                { 0xF0, 0xE6, 0x8C } },
+    { "Lavender",             { 0xE6, 0xE6, 0xFA } },
+    { "LavenderBlush",        { 0xFF, 0xF0, 0xF5 } },
+    { "LawnGreen",            { 0x7C, 0xFC, 0x00 } },
+    { "LemonChiffon",         { 0xFF, 0xFA, 0xCD } },
+    { "LightBlue",            { 0xAD, 0xD8, 0xE6 } },
+    { "LightCoral",           { 0xF0, 0x80, 0x80 } },
+    { "LightCyan",            { 0xE0, 0xFF, 0xFF } },
+    { "LightGoldenRodYellow", { 0xFA, 0xFA, 0xD2 } },
+    { "LightGreen",           { 0x90, 0xEE, 0x90 } },
+    { "LightGrey",            { 0xD3, 0xD3, 0xD3 } },
+    { "LightPink",            { 0xFF, 0xB6, 0xC1 } },
+    { "LightSalmon",          { 0xFF, 0xA0, 0x7A } },
+    { "LightSeaGreen",        { 0x20, 0xB2, 0xAA } },
+    { "LightSkyBlue",         { 0x87, 0xCE, 0xFA } },
+    { "LightSlateGray",       { 0x77, 0x88, 0x99 } },
+    { "LightSteelBlue",       { 0xB0, 0xC4, 0xDE } },
+    { "LightYellow",          { 0xFF, 0xFF, 0xE0 } },
+    { "Lime",                 { 0x00, 0xFF, 0x00 } },
+    { "LimeGreen",            { 0x32, 0xCD, 0x32 } },
+    { "Linen",                { 0xFA, 0xF0, 0xE6 } },
+    { "Magenta",              { 0xFF, 0x00, 0xFF } },
+    { "Maroon",               { 0x80, 0x00, 0x00 } },
+    { "MediumAquaMarine",     { 0x66, 0xCD, 0xAA } },
+    { "MediumBlue",           { 0x00, 0x00, 0xCD } },
+    { "MediumOrchid",         { 0xBA, 0x55, 0xD3 } },
+    { "MediumPurple",         { 0x93, 0x70, 0xD8 } },
+    { "MediumSeaGreen",       { 0x3C, 0xB3, 0x71 } },
+    { "MediumSlateBlue",      { 0x7B, 0x68, 0xEE } },
+    { "MediumSpringGreen",    { 0x00, 0xFA, 0x9A } },
+    { "MediumTurquoise",      { 0x48, 0xD1, 0xCC } },
+    { "MediumVioletRed",      { 0xC7, 0x15, 0x85 } },
+    { "MidnightBlue",         { 0x19, 0x19, 0x70 } },
+    { "MintCream",            { 0xF5, 0xFF, 0xFA } },
+    { "MistyRose",            { 0xFF, 0xE4, 0xE1 } },
+    { "Moccasin",             { 0xFF, 0xE4, 0xB5 } },
+    { "NavajoWhite",          { 0xFF, 0xDE, 0xAD } },
+    { "Navy",                 { 0x00, 0x00, 0x80 } },
+    { "OldLace",              { 0xFD, 0xF5, 0xE6 } },
+    { "Olive",                { 0x80, 0x80, 0x00 } },
+    { "OliveDrab",            { 0x6B, 0x8E, 0x23 } },
+    { "Orange",               { 0xFF, 0xA5, 0x00 } },
+    { "OrangeRed",            { 0xFF, 0x45, 0x00 } },
+    { "Orchid",               { 0xDA, 0x70, 0xD6 } },
+    { "PaleGoldenRod",        { 0xEE, 0xE8, 0xAA } },
+    { "PaleGreen",            { 0x98, 0xFB, 0x98 } },
+    { "PaleTurquoise",        { 0xAF, 0xEE, 0xEE } },
+    { "PaleVioletRed",        { 0xD8, 0x70, 0x93 } },
+    { "PapayaWhip",           { 0xFF, 0xEF, 0xD5 } },
+    { "PeachPuff",            { 0xFF, 0xDA, 0xB9 } },
+    { "Peru",                 { 0xCD, 0x85, 0x3F } },
+    { "Pink",                 { 0xFF, 0xC0, 0xCB } },
+    { "Plum",                 { 0xDD, 0xA0, 0xDD } },
+    { "PowderBlue",           { 0xB0, 0xE0, 0xE6 } },
+    { "Purple",               { 0x80, 0x00, 0x80 } },
+    { "Red",                  { 0xFF, 0x00, 0x00 } },
+    { "RosyBrown",            { 0xBC, 0x8F, 0x8F } },
+    { "RoyalBlue",            { 0x41, 0x69, 0xE1 } },
+    { "SaddleBrown",          { 0x8B, 0x45, 0x13 } },
+    { "Salmon",               { 0xFA, 0x80, 0x72 } },
+    { "SandyBrown",           { 0xF4, 0xA4, 0x60 } },
+    { "SeaGreen",             { 0x2E, 0x8B, 0x57 } },
+    { "SeaShell",             { 0xFF, 0xF5, 0xEE } },
+    { "Sienna",               { 0xA0, 0x52, 0x2D } },
+    { "Silver",               { 0xC0, 0xC0, 0xC0 } },
+    { "SkyBlue",              { 0x87, 0xCE, 0xEB } },
+    { "SlateBlue",            { 0x6A, 0x5A, 0xCD } },
+    { "SlateGray",            { 0x70, 0x80, 0x90 } },
+    { "Snow",                 { 0xFF, 0xFA, 0xFA } },
+    { "SpringGreen",          { 0x00, 0xFF, 0x7F } },
+    { "SteelBlue",            { 0x46, 0x82, 0xB4 } },
+    { "Tan",                  { 0xD2, 0xB4, 0x8C } },
+    { "Teal",                 { 0x00, 0x80, 0x80 } },
+    { "Thistle",              { 0xD8, 0xBF, 0xD8 } },
+    { "Tomato",               { 0xFF, 0x63, 0x47 } },
+    { "Turquoise",            { 0x40, 0xE0, 0xD0 } },
+    { "Violet",               { 0xEE, 0x82, 0xEE } },
+    { "Wheat",                { 0xF5, 0xDE, 0xB3 } },
+    { "White",                { 0xFF, 0xFF, 0xFF } },
+    { "WhiteSmoke",           { 0xF5, 0xF5, 0xF5 } },
+    { "Yellow",               { 0xFF, 0xFF, 0x00 } },
+    { "YellowGreen",          { 0x9A, 0xCD, 0x32 } },
+};
+
+static int color_table_compare(const void *lhs, const void *rhs)
+{
+    return av_strcasecmp(lhs, ((const ColorEntry *)rhs)->name);
+}
+
+#define ALPHA_SEP '@'
+
+int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen,
+                   void *log_ctx)
+{
+    char *tail, color_string2[128];
+    const ColorEntry *entry;
+    int len, hex_offset = 0;
+
+    if (color_string[0] == '#') {
+        hex_offset = 1;
+    } else if (!strncmp(color_string, "0x", 2))
+        hex_offset = 2;
+
+    if (slen < 0)
+        slen = strlen(color_string);
+    av_strlcpy(color_string2, color_string + hex_offset,
+               FFMIN(slen-hex_offset+1, sizeof(color_string2)));
+    if ((tail = strchr(color_string2, ALPHA_SEP)))
+        *tail++ = 0;
+    len = strlen(color_string2);
+    rgba_color[3] = 255;
+
+    if (!av_strcasecmp(color_string2, "random") || !av_strcasecmp(color_string2, "bikeshed")) {
+        int rgba = 0xffffffff; /* av_get_random_seed(); */
+        rgba_color[0] = rgba >> 24;
+        rgba_color[1] = rgba >> 16;
+        rgba_color[2] = rgba >> 8;
+        rgba_color[3] = rgba;
+    } else if (hex_offset ||
+               strspn(color_string2, "0123456789ABCDEFabcdef") == len) {
+        char *tail;
+        unsigned int rgba = strtoul(color_string2, &tail, 16);
+
+        if (*tail || (len != 6 && len != 8)) {
+            av_log(log_ctx, AV_LOG_ERROR, "Invalid 0xRRGGBB[AA] color string: '%s'\n", color_string2);
+            return AVERROR(EINVAL);
+        }
+        if (len == 8) {
+            rgba_color[3] = rgba;
+            rgba >>= 8;
+        }
+        rgba_color[0] = rgba >> 16;
+        rgba_color[1] = rgba >> 8;
+        rgba_color[2] = rgba;
+    } else {
+        entry = bsearch(color_string2,
+                        color_table,
+                        FF_ARRAY_ELEMS(color_table),
+                        sizeof(ColorEntry),
+                        color_table_compare);
+        if (!entry) {
+            av_log(log_ctx, AV_LOG_ERROR, "Cannot find color '%s'\n", color_string2);
+            return AVERROR(EINVAL);
+        }
+        memcpy(rgba_color, entry->rgb_color, 3);
+    }
+
+    if (tail) {
+        double alpha;
+        const char *alpha_string = tail;
+        if (!strncmp(alpha_string, "0x", 2)) {
+            alpha = strtoul(alpha_string, &tail, 16);
+        } else {
+            double norm_alpha = strtod(alpha_string, &tail);
+            if (norm_alpha < 0.0 || norm_alpha > 1.0)
+                alpha = 256;
+            else
+                alpha = 255 * norm_alpha;
+        }
+
+        if (tail == alpha_string || *tail || alpha > 255 || alpha < 0) {
+            av_log(log_ctx, AV_LOG_ERROR, "Invalid alpha value specifier '%s' in '%s'\n",
+                   alpha_string, color_string);
+            return AVERROR(EINVAL);
+        }
+        rgba_color[3] = alpha;
+    }
+
+    return 0;
+}
+
+const char *av_get_known_color_name(int color_idx, const uint8_t **rgbp)
+{
+    const ColorEntry *color;
+
+    if ((unsigned)color_idx >= FF_ARRAY_ELEMS(color_table))
+        return NULL;
+
+    color = &color_table[color_idx];
+    if (rgbp)
+        *rgbp = color->rgb_color;
+
+    return color->name;
+}
+
+/* get a positive number between n_min and n_max, for a maximum length
+   of len_max. Return -1 if error. */
+static int date_get_num(const char **pp,
+                        int n_min, int n_max, int len_max)
+{
+    int i, val, c;
+    const char *p;
+
+    p = *pp;
+    val = 0;
+    for(i = 0; i < len_max; i++) {
+        c = *p;
+        if (!av_isdigit(c))
+            break;
+        val = (val * 10) + c - '0';
+        p++;
+    }
+    /* no number read ? */
+    if (p == *pp)
+        return -1;
+    if (val < n_min || val > n_max)
+        return -1;
+    *pp = p;
+    return val;
+}
+
+static int date_get_month(const char **pp) {
+    int i = 0;
+    for (; i < 12; i++) {
+        if (!av_strncasecmp(*pp, months[i], 3)) {
+            const char *mo_full = months[i] + 3;
+            int len = strlen(mo_full);
+            *pp += 3;
+            if (len > 0 && !av_strncasecmp(*pp, mo_full, len))
+                *pp += len;
+            return i;
+        }
+    }
+    return -1;
+}
+
+char *av_small_strptime(const char *p, const char *fmt, struct tm *dt)
+{
+    int c, val;
+
+    while((c = *fmt++)) {
+        if (c != '%') {
+            if (av_isspace(c))
+                for (; *p && av_isspace(*p); p++);
+            else if (*p != c)
+                return NULL;
+            else p++;
+            continue;
+        }
+
+        c = *fmt++;
+        switch(c) {
+        case 'H':
+        case 'J':
+            val = date_get_num(&p, 0, c == 'H' ? 23 : INT_MAX, c == 'H' ? 2 : 4);
+
+            if (val == -1)
+                return NULL;
+            dt->tm_hour = val;
+            break;
+        case 'M':
+            val = date_get_num(&p, 0, 59, 2);
+            if (val == -1)
+                return NULL;
+            dt->tm_min = val;
+            break;
+        case 'S':
+            val = date_get_num(&p, 0, 59, 2);
+            if (val == -1)
+                return NULL;
+            dt->tm_sec = val;
+            break;
+        case 'Y':
+            val = date_get_num(&p, 0, 9999, 4);
+            if (val == -1)
+                return NULL;
+            dt->tm_year = val - 1900;
+            break;
+        case 'm':
+            val = date_get_num(&p, 1, 12, 2);
+            if (val == -1)
+                return NULL;
+            dt->tm_mon = val - 1;
+            break;
+        case 'd':
+            val = date_get_num(&p, 1, 31, 2);
+            if (val == -1)
+                return NULL;
+            dt->tm_mday = val;
+            break;
+        case 'T':
+            p = av_small_strptime(p, "%H:%M:%S", dt);
+            if (!p)
+                return NULL;
+            break;
+        case 'b':
+        case 'B':
+        case 'h':
+            val = date_get_month(&p);
+            if (val == -1)
+                return NULL;
+            dt->tm_mon = val;
+            break;
+        case '%':
+            if (*p++ != '%')
+                return NULL;
+            break;
+        default:
+            return NULL;
+        }
+    }
+
+    return (char*)p;
+}
+
+time_t av_timegm(struct tm *tm)
+{
+    time_t t;
+
+    int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday;
+
+    if (m < 3) {
+        m += 12;
+        y--;
+    }
+
+    t = 86400LL *
+        (d + (153 * m - 457) / 5 + 365 * y + y / 4 - y / 100 + y / 400 - 719469);
+
+    t += 3600 * tm->tm_hour + 60 * tm->tm_min + tm->tm_sec;
+
+    return t;
+}
+
+int av_parse_time(int64_t *timeval, const char *timestr, int duration)
+{
+    const char *p, *q;
+    int64_t t, now64;
+    time_t now;
+    struct tm dt = { 0 }, tmbuf;
+    int today = 0, negative = 0, microseconds = 0, suffix = 1000000;
+    int i;
+    static const char * const date_fmt[] = {
+        "%Y - %m - %d",
+        "%Y%m%d",
+    };
+    static const char * const time_fmt[] = {
+        "%H:%M:%S",
+        "%H%M%S",
+    };
+    static const char * const tz_fmt[] = {
+        "%H:%M",
+        "%H%M",
+        "%H",
+    };
+
+    p = timestr;
+    q = NULL;
+    *timeval = INT64_MIN;
+    if (!duration) {
+        now64 = av_gettime();
+        now = now64 / 1000000;
+
+        if (!av_strcasecmp(timestr, "now")) {
+            *timeval = now64;
+            return 0;
+        }
+
+        /* parse the year-month-day part */
+        for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) {
+            q = av_small_strptime(p, date_fmt[i], &dt);
+            if (q)
+                break;
+        }
+
+        /* if the year-month-day part is missing, then take the
+         * current year-month-day time */
+        if (!q) {
+            today = 1;
+            q = p;
+        }
+        p = q;
+
+        if (*p == 'T' || *p == 't')
+            p++;
+        else
+            while (av_isspace(*p))
+                p++;
+
+        /* parse the hour-minute-second part */
+        for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) {
+            q = av_small_strptime(p, time_fmt[i], &dt);
+            if (q)
+                break;
+        }
+    } else {
+        /* parse timestr as a duration */
+        if (p[0] == '-') {
+            negative = 1;
+            ++p;
+        }
+        /* parse timestr as HH:MM:SS */
+        q = av_small_strptime(p, "%J:%M:%S", &dt);
+        if (!q) {
+            /* parse timestr as MM:SS */
+            q = av_small_strptime(p, "%M:%S", &dt);
+            dt.tm_hour = 0;
+        }
+        if (!q) {
+            char *o;
+            /* parse timestr as S+ */
+            errno = 0;
+            t = strtoll(p, &o, 10);
+            if (o == p) /* the parsing didn't succeed */
+                return AVERROR(EINVAL);
+            if (errno == ERANGE)
+                return AVERROR(ERANGE);
+            q = o;
+        } else {
+            t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec;
+        }
+    }
+
+    /* Now we have all the fields that we can get */
+    if (!q)
+        return AVERROR(EINVAL);
+
+    /* parse the .m... part */
+    if (*q == '.') {
+        int n;
+        q++;
+        for (n = 100000; n >= 1; n /= 10, q++) {
+            if (!av_isdigit(*q))
+                break;
+            microseconds += n * (*q - '0');
+        }
+        while (av_isdigit(*q))
+            q++;
+    }
+
+    if (duration) {
+        if (q[0] == 'm' && q[1] == 's') {
+            suffix = 1000;
+            microseconds /= 1000;
+            q += 2;
+        } else if (q[0] == 'u' && q[1] == 's') {
+            suffix = 1;
+            microseconds = 0;
+            q += 2;
+        } else if (*q == 's')
+            q++;
+    } else {
+        int is_utc = *q == 'Z' || *q == 'z';
+        int tzoffset = 0;
+        q += is_utc;
+        if (!today && !is_utc && (*q == '+' || *q == '-')) {
+            struct tm tz = { 0 };
+            int sign = (*q == '+' ? -1 : 1);
+            q++;
+            p = q;
+            for (i = 0; i < FF_ARRAY_ELEMS(tz_fmt); i++) {
+                q = av_small_strptime(p, tz_fmt[i], &tz);
+                if (q)
+                    break;
+            }
+            if (!q)
+                return AVERROR(EINVAL);
+            tzoffset = sign * (tz.tm_hour * 60 + tz.tm_min) * 60;
+            is_utc = 1;
+        }
+        if (today) { /* fill in today's date */
+            struct tm dt2 = is_utc ? *gmtime_r(&now, &tmbuf) : *localtime_r(&now, &tmbuf);
+            dt2.tm_hour = dt.tm_hour;
+            dt2.tm_min  = dt.tm_min;
+            dt2.tm_sec  = dt.tm_sec;
+            dt = dt2;
+        }
+        dt.tm_isdst = is_utc ? 0 : -1;
+        t = is_utc ? av_timegm(&dt) : mktime(&dt);
+        t += tzoffset;
+    }
+
+    /* Check that we are at the end of the string */
+    if (*q)
+        return AVERROR(EINVAL);
+
+    if (INT64_MAX / suffix < t)
+        return AVERROR(ERANGE);
+    t *= suffix;
+    if (INT64_MAX - microseconds < t)
+        return AVERROR(ERANGE);
+    t += microseconds;
+    *timeval = negative ? -t : t;
+    return 0;
+}
+
+int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
+{
+    const char *p;
+    char tag[128], *q;
+
+    p = info;
+    if (*p == '?')
+        p++;
+    for(;;) {
+        q = tag;
+        while (*p != '\0' && *p != '=' && *p != '&') {
+            if ((q - tag) < sizeof(tag) - 1)
+                *q++ = *p;
+            p++;
+        }
+        *q = '\0';
+        q = arg;
+        if (*p == '=') {
+            p++;
+            while (*p != '&' && *p != '\0') {
+                if ((q - arg) < arg_size - 1) {
+                    if (*p == '+')
+                        *q++ = ' ';
+                    else
+                        *q++ = *p;
+                }
+                p++;
+            }
+        }
+        *q = '\0';
+        if (!strcmp(tag, tag1))
+            return 1;
+        if (*p != '&')
+            break;
+        p++;
+    }
+    return 0;
+}
diff --git a/media/ffvpx/libavutil/parseutils.h b/media/ffvpx/libavutil/parseutils.h
new file mode 100644
index 0000000000..e66d24b76e
--- /dev/null
+++ b/media/ffvpx/libavutil/parseutils.h
@@ -0,0 +1,193 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_PARSEUTILS_H
+#define AVUTIL_PARSEUTILS_H
+
+#include <time.h>
+
+#include "rational.h"
+
+/**
+ * @file
+ * misc parsing utilities
+ */
+
+/**
+ * Parse str and store the parsed ratio in q.
+ *
+ * Note that a ratio with infinite (1/0) or negative value is
+ * considered valid, so you should check on the returned value if you
+ * want to exclude those values.
+ *
+ * The undefined value can be expressed using the "0:0" string.
+ *
+ * @param[in,out] q pointer to the AVRational which will contain the ratio
+ * @param[in] str the string to parse: it has to be a string in the format
+ * num:den, a float number or an expression
+ * @param[in] max the maximum allowed numerator and denominator
+ * @param[in] log_offset log level offset which is applied to the log
+ * level of log_ctx
+ * @param[in] log_ctx parent logging context
+ * @return >= 0 on success, a negative error code otherwise
+ */
+int av_parse_ratio(AVRational *q, const char *str, int max,
+                   int log_offset, void *log_ctx);
+
+#define av_parse_ratio_quiet(rate, str, max) \
+    av_parse_ratio(rate, str, max, AV_LOG_MAX_OFFSET, NULL)
+
+/**
+ * Parse str and put in width_ptr and height_ptr the detected values.
+ *
+ * @param[in,out] width_ptr pointer to the variable which will contain the detected
+ * width value
+ * @param[in,out] height_ptr pointer to the variable which will contain the detected
+ * height value
+ * @param[in] str the string to parse: it has to be a string in the format
+ * width x height or a valid video size abbreviation.
+ * @return >= 0 on success, a negative error code otherwise
+ */
+int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str);
+
+/**
+ * Parse str and store the detected values in *rate.
+ *
+ * @param[in,out] rate pointer to the AVRational which will contain the detected
+ * frame rate
+ * @param[in] str the string to parse: it has to be a string in the format
+ * rate_num / rate_den, a float number or a valid video rate abbreviation
+ * @return >= 0 on success, a negative error code otherwise
+ */
+int av_parse_video_rate(AVRational *rate, const char *str);
+
+/**
+ * Put the RGBA values that correspond to color_string in rgba_color.
+ *
+ * @param color_string a string specifying a color. It can be the name of
+ * a color (case insensitive match) or a [0x|#]RRGGBB[AA] sequence,
+ * possibly followed by "@" and a string representing the alpha
+ * component.
+ * The alpha component may be a string composed by "0x" followed by an
+ * hexadecimal number or a decimal number between 0.0 and 1.0, which
+ * represents the opacity value (0x00/0.0 means completely transparent,
+ * 0xff/1.0 completely opaque).
+ * If the alpha component is not specified then 0xff is assumed.
+ * The string "random" will result in a random color.
+ * @param slen length of the initial part of color_string containing the
+ * color. It can be set to -1 if color_string is a null terminated string
+ * containing nothing else than the color.
+ * @return >= 0 in case of success, a negative value in case of
+ * failure (for example if color_string cannot be parsed).
+ */
+int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen,
+                   void *log_ctx);
+
+/**
+ * Get the name of a color from the internal table of hard-coded named
+ * colors.
+ *
+ * This function is meant to enumerate the color names recognized by
+ * av_parse_color().
+ *
+ * @param color_idx index of the requested color, starting from 0
+ * @param rgbp      if not NULL, will point to a 3-elements array with the color value in RGB
+ * @return the color name string or NULL if color_idx is not in the array
+ */
+const char *av_get_known_color_name(int color_idx, const uint8_t **rgb);
+
+/**
+ * Parse timestr and return in *time a corresponding number of
+ * microseconds.
+ *
+ * @param timeval puts here the number of microseconds corresponding
+ * to the string in timestr. If the string represents a duration, it
+ * is the number of microseconds contained in the time interval.  If
+ * the string is a date, is the number of microseconds since 1st of
+ * January, 1970 up to the time of the parsed date.  If timestr cannot
+ * be successfully parsed, set *time to INT64_MIN.
+
+ * @param timestr a string representing a date or a duration.
+ * - If a date the syntax is:
+ * @code
+ * [{YYYY-MM-DD|YYYYMMDD}[T|t| ]]{{HH:MM:SS[.m...]]]}|{HHMMSS[.m...]]]}}[Z]
+ * now
+ * @endcode
+ * If the value is "now" it takes the current time.
+ * Time is local time unless Z is appended, in which case it is
+ * interpreted as UTC.
+ * If the year-month-day part is not specified it takes the current
+ * year-month-day.
+ * - If a duration the syntax is:
+ * @code
+ * [-][HH:]MM:SS[.m...]
+ * [-]S+[.m...]
+ * @endcode
+ * @param duration flag which tells how to interpret timestr, if not
+ * zero timestr is interpreted as a duration, otherwise as a date
+ * @return >= 0 in case of success, a negative value corresponding to an
+ * AVERROR code otherwise
+ */
+int av_parse_time(int64_t *timeval, const char *timestr, int duration);
+
+/**
+ * Attempt to find a specific tag in a URL.
+ *
+ * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done.
+ * Return 1 if found.
+ */
+int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
+
+/**
+ * Simplified version of strptime
+ *
+ * Parse the input string p according to the format string fmt and
+ * store its results in the structure dt.
+ * This implementation supports only a subset of the formats supported
+ * by the standard strptime().
+ *
+ * The supported input field descriptors are listed below.
+ * - %H: the hour as a decimal number, using a 24-hour clock, in the
+ *   range '00' through '23'
+ * - %J: hours as a decimal number, in the range '0' through INT_MAX
+ * - %M: the minute as a decimal number, using a 24-hour clock, in the
+ *   range '00' through '59'
+ * - %S: the second as a decimal number, using a 24-hour clock, in the
+ *   range '00' through '59'
+ * - %Y: the year as a decimal number, using the Gregorian calendar
+ * - %m: the month as a decimal number, in the range '1' through '12'
+ * - %d: the day of the month as a decimal number, in the range '1'
+ *   through '31'
+ * - %T: alias for '%H:%M:%S'
+ * - %%: a literal '%'
+ *
+ * @return a pointer to the first character not processed in this function
+ *         call. In case the input string contains more characters than
+ *         required by the format string the return value points right after
+ *         the last consumed input character. In case the whole input string
+ *         is consumed the return value points to the null byte at the end of
+ *         the string. On failure NULL is returned.
+ */
+char *av_small_strptime(const char *p, const char *fmt, struct tm *dt);
+
+/**
+ * Convert the decomposed UTC time in tm to a time_t value.
+ */
+time_t av_timegm(struct tm *tm);
+
+#endif /* AVUTIL_PARSEUTILS_H */
diff --git a/media/ffvpx/libavutil/pixdesc.c b/media/ffvpx/libavutil/pixdesc.c
new file mode 100644
index 0000000000..b97b0665b0
--- /dev/null
+++ b/media/ffvpx/libavutil/pixdesc.c
@@ -0,0 +1,2961 @@
+/*
+ * pixel format descriptor
+ * Copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "avassert.h"
+#include "avstring.h"
+#include "common.h"
+#include "pixfmt.h"
+#include "pixdesc.h"
+#include "internal.h"
+#include "intreadwrite.h"
+#include "version.h"
+
+void av_read_image_line2(void *dst,
+                        const uint8_t *data[4], const int linesize[4],
+                        const AVPixFmtDescriptor *desc,
+                        int x, int y, int c, int w,
+                        int read_pal_component,
+                        int dst_element_size)
+{
+    AVComponentDescriptor comp = desc->comp[c];
+    int plane = comp.plane;
+    int depth = comp.depth;
+    unsigned mask  = (1ULL << depth) - 1;
+    int shift = comp.shift;
+    int step  = comp.step;
+    int flags = desc->flags;
+    uint16_t *dst16 = dst;
+    uint32_t *dst32 = dst;
+
+    if (flags & AV_PIX_FMT_FLAG_BITSTREAM) {
+        int skip = x * step + comp.offset;
+        const uint8_t *p = data[plane] + y * linesize[plane] + (skip >> 3);
+        int shift = 8 - depth - (skip & 7);
+
+        while (w--) {
+            int val = (*p >> shift) & mask;
+            if (read_pal_component)
+                val = data[1][4*val + c];
+            shift -= step;
+            p -= shift >> 3;
+            shift &= 7;
+            if (dst_element_size == 4) *dst32++ = val;
+            else                       *dst16++ = val;
+        }
+    } else {
+        const uint8_t *p = data[plane] + y * linesize[plane] +
+                           x * step + comp.offset;
+        int is_8bit = shift + depth <= 8;
+        int is_16bit= shift + depth <=16;
+
+        if (is_8bit)
+            p += !!(flags & AV_PIX_FMT_FLAG_BE);
+
+        while (w--) {
+            unsigned val;
+            if     (is_8bit)  val = *p;
+            else if(is_16bit) val = flags & AV_PIX_FMT_FLAG_BE ? AV_RB16(p) : AV_RL16(p);
+            else              val = flags & AV_PIX_FMT_FLAG_BE ? AV_RB32(p) : AV_RL32(p);
+            val = (val >> shift) & mask;
+            if (read_pal_component)
+                val = data[1][4 * val + c];
+            p += step;
+            if (dst_element_size == 4) *dst32++ = val;
+            else                       *dst16++ = val;
+        }
+    }
+}
+
+void av_read_image_line(uint16_t *dst,
+                        const uint8_t *data[4], const int linesize[4],
+                        const AVPixFmtDescriptor *desc,
+                        int x, int y, int c, int w,
+                        int read_pal_component)
+{
+    av_read_image_line2(dst, data, linesize, desc,x, y, c, w,
+                        read_pal_component,
+                        2);
+}
+
+void av_write_image_line2(const void *src,
+                         uint8_t *data[4], const int linesize[4],
+                         const AVPixFmtDescriptor *desc,
+                         int x, int y, int c, int w, int src_element_size)
+{
+    AVComponentDescriptor comp = desc->comp[c];
+    int plane = comp.plane;
+    int depth = comp.depth;
+    int step  = comp.step;
+    int flags = desc->flags;
+    const uint32_t *src32 = src;
+    const uint16_t *src16 = src;
+
+    if (flags & AV_PIX_FMT_FLAG_BITSTREAM) {
+        int skip = x * step + comp.offset;
+        uint8_t *p = data[plane] + y * linesize[plane] + (skip >> 3);
+        int shift = 8 - depth - (skip & 7);
+
+        while (w--) {
+            *p |= (src_element_size == 4 ? *src32++ : *src16++) << shift;
+            shift -= step;
+            p -= shift >> 3;
+            shift &= 7;
+        }
+    } else {
+        int shift = comp.shift;
+        uint8_t *p = data[plane] + y * linesize[plane] +
+                     x * step + comp.offset;
+
+        if (shift + depth <= 8) {
+            p += !!(flags & AV_PIX_FMT_FLAG_BE);
+            while (w--) {
+                *p |= ((src_element_size == 4 ? *src32++ : *src16++) << shift);
+                p += step;
+            }
+        } else {
+            while (w--) {
+                unsigned s = (src_element_size == 4 ? *src32++ : *src16++);
+                if (shift + depth <= 16) {
+                    if (flags & AV_PIX_FMT_FLAG_BE) {
+                        uint16_t val = AV_RB16(p) | (s << shift);
+                        AV_WB16(p, val);
+                    } else {
+                        uint16_t val = AV_RL16(p) | (s << shift);
+                        AV_WL16(p, val);
+                    }
+                } else {
+                    if (flags & AV_PIX_FMT_FLAG_BE) {
+                        uint32_t val = AV_RB32(p) | (s << shift);
+                        AV_WB32(p, val);
+                    } else {
+                        uint32_t val = AV_RL32(p) | (s << shift);
+                        AV_WL32(p, val);
+                    }
+                }
+                p += step;
+            }
+        }
+    }
+}
+
+void av_write_image_line(const uint16_t *src,
+                         uint8_t *data[4], const int linesize[4],
+                         const AVPixFmtDescriptor *desc,
+                         int x, int y, int c, int w)
+{
+    av_write_image_line2(src, data, linesize, desc, x, y, c, w, 2);
+}
+
+#if FF_API_PLUS1_MINUS1
+FF_DISABLE_DEPRECATION_WARNINGS
+#endif
+static const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB] = {
+    [AV_PIX_FMT_YUV420P] = {
+        .name = "yuv420p",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUYV422] = {
+        .name = "yuyv422",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 8, 1, 7, 1 },        /* Y */
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* U */
+            { 0, 4, 3, 0, 8, 3, 7, 4 },        /* V */
+        },
+    },
+    [AV_PIX_FMT_YVYU422] = {
+        .name = "yvyu422",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 8, 1, 7, 1 },        /* Y */
+            { 0, 4, 3, 0, 8, 3, 7, 4 },        /* U */
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* V */
+        },
+    },
+    [AV_PIX_FMT_RGB24] = {
+        .name = "rgb24",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 3, 0, 0, 8, 2, 7, 1 },        /* R */
+            { 0, 3, 1, 0, 8, 2, 7, 2 },        /* G */
+            { 0, 3, 2, 0, 8, 2, 7, 3 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_BGR24] = {
+        .name = "bgr24",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 3, 2, 0, 8, 2, 7, 3 },        /* R */
+            { 0, 3, 1, 0, 8, 2, 7, 2 },        /* G */
+            { 0, 3, 0, 0, 8, 2, 7, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_YUV422P] = {
+        .name = "yuv422p",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P] = {
+        .name = "yuv444p",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV410P] = {
+        .name = "yuv410p",
+        .nb_components = 3,
+        .log2_chroma_w = 2,
+        .log2_chroma_h = 2,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV411P] = {
+        .name = "yuv411p",
+        .nb_components = 3,
+        .log2_chroma_w = 2,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUVJ411P] = {
+        .name = "yuvj411p",
+        .nb_components = 3,
+        .log2_chroma_w = 2,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_GRAY8] = {
+        .name = "gray",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+        },
+        .flags = FF_PSEUDOPAL,
+        .alias = "gray8,y8",
+    },
+    [AV_PIX_FMT_MONOWHITE] = {
+        .name = "monow",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 1, 0, 0, 1 },        /* Y */
+        },
+        .flags = AV_PIX_FMT_FLAG_BITSTREAM,
+    },
+    [AV_PIX_FMT_MONOBLACK] = {
+        .name = "monob",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 7, 1, 0, 0, 1 },        /* Y */
+        },
+        .flags = AV_PIX_FMT_FLAG_BITSTREAM,
+    },
+    [AV_PIX_FMT_PAL8] = {
+        .name = "pal8",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },
+        },
+        .flags = AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVJ420P] = {
+        .name = "yuvj420p",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUVJ422P] = {
+        .name = "yuvj422p",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUVJ444P] = {
+        .name = "yuvj444p",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_XVMC] = {
+        .name = "xvmc",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_UYVY422] = {
+        .name = "uyvy422",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 1, 0, 8, 1, 7, 2 },        /* Y */
+            { 0, 4, 0, 0, 8, 3, 7, 1 },        /* U */
+            { 0, 4, 2, 0, 8, 3, 7, 3 },        /* V */
+        },
+    },
+    [AV_PIX_FMT_UYYVYY411] = {
+        .name = "uyyvyy411",
+        .nb_components = 3,
+        .log2_chroma_w = 2,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* Y */
+            { 0, 6, 0, 0, 8, 5, 7, 1 },        /* U */
+            { 0, 6, 3, 0, 8, 5, 7, 4 },        /* V */
+        },
+    },
+    [AV_PIX_FMT_BGR8] = {
+        .name = "bgr8",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 3, 0, 2, 1 },        /* R */
+            { 0, 1, 0, 3, 3, 0, 2, 1 },        /* G */
+            { 0, 1, 0, 6, 2, 0, 1, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | FF_PSEUDOPAL,
+    },
+    [AV_PIX_FMT_BGR4] = {
+        .name = "bgr4",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 3, 0, 1, 3, 0, 4 },        /* R */
+            { 0, 4, 1, 0, 2, 3, 1, 2 },        /* G */
+            { 0, 4, 0, 0, 1, 3, 0, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BITSTREAM | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_BGR4_BYTE] = {
+        .name = "bgr4_byte",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 1, 0, 0, 1 },        /* R */
+            { 0, 1, 0, 1, 2, 0, 1, 1 },        /* G */
+            { 0, 1, 0, 3, 1, 0, 0, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | FF_PSEUDOPAL,
+    },
+    [AV_PIX_FMT_RGB8] = {
+        .name = "rgb8",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 6, 2, 0, 1, 1 },        /* R */
+            { 0, 1, 0, 3, 3, 0, 2, 1 },        /* G */
+            { 0, 1, 0, 0, 3, 0, 2, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | FF_PSEUDOPAL,
+    },
+    [AV_PIX_FMT_RGB4] = {
+        .name = "rgb4",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 0, 0, 1, 3, 0, 1 },        /* R */
+            { 0, 4, 1, 0, 2, 3, 1, 2 },        /* G */
+            { 0, 4, 3, 0, 1, 3, 0, 4 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BITSTREAM | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_RGB4_BYTE] = {
+        .name = "rgb4_byte",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 3, 1, 0, 0, 1 },        /* R */
+            { 0, 1, 0, 1, 2, 0, 1, 1 },        /* G */
+            { 0, 1, 0, 0, 1, 0, 0, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | FF_PSEUDOPAL,
+    },
+    [AV_PIX_FMT_NV12] = {
+        .name = "nv12",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 2, 0, 0, 8, 1, 7, 1 },        /* U */
+            { 1, 2, 1, 0, 8, 1, 7, 2 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_NV21] = {
+        .name = "nv21",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 2, 1, 0, 8, 1, 7, 2 },        /* U */
+            { 1, 2, 0, 0, 8, 1, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_ARGB] = {
+        .name = "argb",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* R */
+            { 0, 4, 2, 0, 8, 3, 7, 3 },        /* G */
+            { 0, 4, 3, 0, 8, 3, 7, 4 },        /* B */
+            { 0, 4, 0, 0, 8, 3, 7, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_RGBA] = {
+        .name = "rgba",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 0, 0, 8, 3, 7, 1 },        /* R */
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* G */
+            { 0, 4, 2, 0, 8, 3, 7, 3 },        /* B */
+            { 0, 4, 3, 0, 8, 3, 7, 4 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_ABGR] = {
+        .name = "abgr",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 3, 0, 8, 3, 7, 4 },        /* R */
+            { 0, 4, 2, 0, 8, 3, 7, 3 },        /* G */
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* B */
+            { 0, 4, 0, 0, 8, 3, 7, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_BGRA] = {
+        .name = "bgra",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 2, 0, 8, 3, 7, 3 },        /* R */
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* G */
+            { 0, 4, 0, 0, 8, 3, 7, 1 },        /* B */
+            { 0, 4, 3, 0, 8, 3, 7, 4 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_0RGB] = {
+        .name = "0rgb",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* R */
+            { 0, 4, 2, 0, 8, 3, 7, 3 },        /* G */
+            { 0, 4, 3, 0, 8, 3, 7, 4 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_RGB0] = {
+        .name = "rgb0",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            { 0, 4, 0, 0, 8, 3, 7, 1 },        /* R */
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* G */
+            { 0, 4, 2, 0, 8, 3, 7, 3 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_0BGR] = {
+        .name = "0bgr",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            { 0, 4, 3, 0, 8, 3, 7, 4 },        /* R */
+            { 0, 4, 2, 0, 8, 3, 7, 3 },        /* G */
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_BGR0] = {
+        .name = "bgr0",
+        .nb_components= 3,
+        .log2_chroma_w= 0,
+        .log2_chroma_h= 0,
+        .comp = {
+            { 0, 4, 2, 0, 8, 3, 7, 3 },        /* R */
+            { 0, 4, 1, 0, 8, 3, 7, 2 },        /* G */
+            { 0, 4, 0, 0, 8, 3, 7, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GRAY9BE] = {
+        .name = "gray9be",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },       /* Y */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE,
+        .alias = "y9be",
+    },
+    [AV_PIX_FMT_GRAY9LE] = {
+        .name = "gray9le",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },       /* Y */
+        },
+        .alias = "y9le",
+    },
+    [AV_PIX_FMT_GRAY10BE] = {
+        .name = "gray10be",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },       /* Y */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE,
+        .alias = "y10be",
+    },
+    [AV_PIX_FMT_GRAY10LE] = {
+        .name = "gray10le",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },       /* Y */
+        },
+        .alias = "y10le",
+    },
+    [AV_PIX_FMT_GRAY12BE] = {
+        .name = "gray12be",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },       /* Y */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE,
+        .alias = "y12be",
+    },
+    [AV_PIX_FMT_GRAY12LE] = {
+        .name = "gray12le",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },       /* Y */
+        },
+        .alias = "y12le",
+    },
+    [AV_PIX_FMT_GRAY14BE] = {
+        .name = "gray14be",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 14, 1, 13, 1 },       /* Y */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE,
+        .alias = "y14be",
+    },
+    [AV_PIX_FMT_GRAY14LE] = {
+        .name = "gray14le",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 14, 1, 13, 1 },       /* Y */
+        },
+        .alias = "y14le",
+    },
+    [AV_PIX_FMT_GRAY16BE] = {
+        .name = "gray16be",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },       /* Y */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE,
+        .alias = "y16be",
+    },
+    [AV_PIX_FMT_GRAY16LE] = {
+        .name = "gray16le",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },       /* Y */
+        },
+        .alias = "y16le",
+    },
+    [AV_PIX_FMT_YUV440P] = {
+        .name = "yuv440p",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUVJ440P] = {
+        .name = "yuvj440p",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV440P10LE] = {
+        .name = "yuv440p10le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV440P10BE] = {
+        .name = "yuv440p10be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV440P12LE] = {
+        .name = "yuv440p12le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV440P12BE] = {
+        .name = "yuv440p12be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUVA420P] = {
+        .name = "yuva420p",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+            { 3, 1, 0, 0, 8, 0, 7, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA422P] = {
+        .name = "yuva422p",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+            { 3, 1, 0, 0, 8, 0, 7, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA444P] = {
+        .name = "yuva444p",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* U */
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* V */
+            { 3, 1, 0, 0, 8, 0, 7, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA420P9BE] = {
+        .name = "yuva420p9be",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+            { 3, 2, 0, 0, 9, 1, 8, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA420P9LE] = {
+        .name = "yuva420p9le",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+            { 3, 2, 0, 0, 9, 1, 8, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA422P9BE] = {
+        .name = "yuva422p9be",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+            { 3, 2, 0, 0, 9, 1, 8, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA422P9LE] = {
+        .name = "yuva422p9le",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+            { 3, 2, 0, 0, 9, 1, 8, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA444P9BE] = {
+        .name = "yuva444p9be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+            { 3, 2, 0, 0, 9, 1, 8, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA444P9LE] = {
+        .name = "yuva444p9le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+            { 3, 2, 0, 0, 9, 1, 8, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA420P10BE] = {
+        .name = "yuva420p10be",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+            { 3, 2, 0, 0, 10, 1, 9, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA420P10LE] = {
+        .name = "yuva420p10le",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+            { 3, 2, 0, 0, 10, 1, 9, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA422P10BE] = {
+        .name = "yuva422p10be",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+            { 3, 2, 0, 0, 10, 1, 9, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA422P10LE] = {
+        .name = "yuva422p10le",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+            { 3, 2, 0, 0, 10, 1, 9, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA444P10BE] = {
+        .name = "yuva444p10be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+            { 3, 2, 0, 0, 10, 1, 9, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA444P10LE] = {
+        .name = "yuva444p10le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+            { 3, 2, 0, 0, 10, 1, 9, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA420P16BE] = {
+        .name = "yuva420p16be",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+            { 3, 2, 0, 0, 16, 1, 15, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA420P16LE] = {
+        .name = "yuva420p16le",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+            { 3, 2, 0, 0, 16, 1, 15, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA422P16BE] = {
+        .name = "yuva422p16be",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+            { 3, 2, 0, 0, 16, 1, 15, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA422P16LE] = {
+        .name = "yuva422p16le",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+            { 3, 2, 0, 0, 16, 1, 15, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA444P16BE] = {
+        .name = "yuva444p16be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+            { 3, 2, 0, 0, 16, 1, 15, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA444P16LE] = {
+        .name = "yuva444p16le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+            { 3, 2, 0, 0, 16, 1, 15, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_RGB48BE] = {
+        .name = "rgb48be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 6, 0, 0, 16, 5, 15, 1 },       /* R */
+            { 0, 6, 2, 0, 16, 5, 15, 3 },       /* G */
+            { 0, 6, 4, 0, 16, 5, 15, 5 },       /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BE,
+    },
+    [AV_PIX_FMT_RGB48LE] = {
+        .name = "rgb48le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 6, 0, 0, 16, 5, 15, 1 },       /* R */
+            { 0, 6, 2, 0, 16, 5, 15, 3 },       /* G */
+            { 0, 6, 4, 0, 16, 5, 15, 5 },       /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_RGBA64BE] = {
+        .name = "rgba64be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 8, 0, 0, 16, 7, 15, 1 },       /* R */
+            { 0, 8, 2, 0, 16, 7, 15, 3 },       /* G */
+            { 0, 8, 4, 0, 16, 7, 15, 5 },       /* B */
+            { 0, 8, 6, 0, 16, 7, 15, 7 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_RGBA64LE] = {
+        .name = "rgba64le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 8, 0, 0, 16, 7, 15, 1 },       /* R */
+            { 0, 8, 2, 0, 16, 7, 15, 3 },       /* G */
+            { 0, 8, 4, 0, 16, 7, 15, 5 },       /* B */
+            { 0, 8, 6, 0, 16, 7, 15, 7 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_RGB565BE] = {
+        .name = "rgb565be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, -1, 3, 5, 1, 4, 0 },        /* R */
+            { 0, 2,  0, 5, 6, 1, 5, 1 },        /* G */
+            { 0, 2,  0, 0, 5, 1, 4, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_RGB565LE] = {
+        .name = "rgb565le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 1, 3, 5, 1, 4, 2 },        /* R */
+            { 0, 2, 0, 5, 6, 1, 5, 1 },        /* G */
+            { 0, 2, 0, 0, 5, 1, 4, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_RGB555BE] = {
+        .name = "rgb555be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, -1, 2, 5, 1, 4, 0 },        /* R */
+            { 0, 2,  0, 5, 5, 1, 4, 1 },        /* G */
+            { 0, 2,  0, 0, 5, 1, 4, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_RGB555LE] = {
+        .name = "rgb555le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 1, 2, 5, 1, 4, 2 },        /* R */
+            { 0, 2, 0, 5, 5, 1, 4, 1 },        /* G */
+            { 0, 2, 0, 0, 5, 1, 4, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_RGB444BE] = {
+        .name = "rgb444be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, -1, 0, 4, 1, 3, 0 },        /* R */
+            { 0, 2,  0, 4, 4, 1, 3, 1 },        /* G */
+            { 0, 2,  0, 0, 4, 1, 3, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_RGB444LE] = {
+        .name = "rgb444le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 1, 0, 4, 1, 3, 2 },        /* R */
+            { 0, 2, 0, 4, 4, 1, 3, 1 },        /* G */
+            { 0, 2, 0, 0, 4, 1, 3, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_BGR48BE] = {
+        .name = "bgr48be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 6, 4, 0, 16, 5, 15, 5 },       /* R */
+            { 0, 6, 2, 0, 16, 5, 15, 3 },       /* G */
+            { 0, 6, 0, 0, 16, 5, 15, 1 },       /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_BGR48LE] = {
+        .name = "bgr48le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 6, 4, 0, 16, 5, 15, 5 },       /* R */
+            { 0, 6, 2, 0, 16, 5, 15, 3 },       /* G */
+            { 0, 6, 0, 0, 16, 5, 15, 1 },       /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_BGRA64BE] = {
+        .name = "bgra64be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 8, 4, 0, 16, 7, 15, 5 },       /* R */
+            { 0, 8, 2, 0, 16, 7, 15, 3 },       /* G */
+            { 0, 8, 0, 0, 16, 7, 15, 1 },       /* B */
+            { 0, 8, 6, 0, 16, 7, 15, 7 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_BGRA64LE] = {
+        .name = "bgra64le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 8, 4, 0, 16, 7, 15, 5 },       /* R */
+            { 0, 8, 2, 0, 16, 7, 15, 3 },       /* G */
+            { 0, 8, 0, 0, 16, 7, 15, 1 },       /* B */
+            { 0, 8, 6, 0, 16, 7, 15, 7 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_BGR565BE] = {
+        .name = "bgr565be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2,  0, 0, 5, 1, 4, 1 },        /* R */
+            { 0, 2,  0, 5, 6, 1, 5, 1 },        /* G */
+            { 0, 2, -1, 3, 5, 1, 4, 0 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_BGR565LE] = {
+        .name = "bgr565le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 5, 1, 4, 1 },        /* R */
+            { 0, 2, 0, 5, 6, 1, 5, 1 },        /* G */
+            { 0, 2, 1, 3, 5, 1, 4, 2 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_BGR555BE] = {
+        .name = "bgr555be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2,  0, 0, 5, 1, 4, 1 },       /* R */
+            { 0, 2,  0, 5, 5, 1, 4, 1 },       /* G */
+            { 0, 2, -1, 2, 5, 1, 4, 0 },       /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB,
+     },
+    [AV_PIX_FMT_BGR555LE] = {
+        .name = "bgr555le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 5, 1, 4, 1 },        /* R */
+            { 0, 2, 0, 5, 5, 1, 4, 1 },        /* G */
+            { 0, 2, 1, 2, 5, 1, 4, 2 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_BGR444BE] = {
+        .name = "bgr444be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2,  0, 0, 4, 1, 3, 1 },       /* R */
+            { 0, 2,  0, 4, 4, 1, 3, 1 },       /* G */
+            { 0, 2, -1, 0, 4, 1, 3, 0 },       /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB,
+     },
+    [AV_PIX_FMT_BGR444LE] = {
+        .name = "bgr444le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 4, 1, 3, 1 },        /* R */
+            { 0, 2, 0, 4, 4, 1, 3, 1 },        /* G */
+            { 0, 2, 1, 0, 4, 1, 3, 2 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_RGB,
+    },
+#if FF_API_VAAPI
+    [AV_PIX_FMT_VAAPI_MOCO] = {
+        .name = "vaapi_moco",
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_VAAPI_IDCT] = {
+        .name = "vaapi_idct",
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_VAAPI_VLD] = {
+        .name = "vaapi_vld",
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+#else
+    [AV_PIX_FMT_VAAPI] = {
+        .name = "vaapi",
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+#endif
+    [AV_PIX_FMT_YUV420P9LE] = {
+        .name = "yuv420p9le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV420P9BE] = {
+        .name = "yuv420p9be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV420P10LE] = {
+        .name = "yuv420p10le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV420P10BE] = {
+        .name = "yuv420p10be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV420P12LE] = {
+        .name = "yuv420p12le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV420P12BE] = {
+        .name = "yuv420p12be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV420P14LE] = {
+        .name = "yuv420p14le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 14, 1, 13, 1 },        /* Y */
+            { 1, 2, 0, 0, 14, 1, 13, 1 },        /* U */
+            { 2, 2, 0, 0, 14, 1, 13, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV420P14BE] = {
+        .name = "yuv420p14be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 14, 1, 13, 1 },        /* Y */
+            { 1, 2, 0, 0, 14, 1, 13, 1 },        /* U */
+            { 2, 2, 0, 0, 14, 1, 13, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV420P16LE] = {
+        .name = "yuv420p16le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV420P16BE] = {
+        .name = "yuv420p16be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P9LE] = {
+        .name = "yuv422p9le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P9BE] = {
+        .name = "yuv422p9be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P10LE] = {
+        .name = "yuv422p10le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P10BE] = {
+        .name = "yuv422p10be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P12LE] = {
+        .name = "yuv422p12le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P12BE] = {
+        .name = "yuv422p12be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P14LE] = {
+        .name = "yuv422p14le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 14, 1, 13, 1 },        /* Y */
+            { 1, 2, 0, 0, 14, 1, 13, 1 },        /* U */
+            { 2, 2, 0, 0, 14, 1, 13, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P14BE] = {
+        .name = "yuv422p14be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 14, 1, 13, 1 },        /* Y */
+            { 1, 2, 0, 0, 14, 1, 13, 1 },        /* U */
+            { 2, 2, 0, 0, 14, 1, 13, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P16LE] = {
+        .name = "yuv422p16le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV422P16BE] = {
+        .name = "yuv422p16be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P16LE] = {
+        .name = "yuv444p16le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P16BE] = {
+        .name = "yuv444p16be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },        /* Y */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },        /* U */
+            { 2, 2, 0, 0, 16, 1, 15, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P10LE] = {
+        .name = "yuv444p10le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P10BE] = {
+        .name = "yuv444p10be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* U */
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P9LE] = {
+        .name = "yuv444p9le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P9BE] = {
+        .name = "yuv444p9be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* Y */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* U */
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P12LE] = {
+        .name = "yuv444p12le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P12BE] = {
+        .name = "yuv444p12be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P14LE] = {
+        .name = "yuv444p14le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 14, 1, 13, 1 },        /* Y */
+            { 1, 2, 0, 0, 14, 1, 13, 1 },        /* U */
+            { 2, 2, 0, 0, 14, 1, 13, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_YUV444P14BE] = {
+        .name = "yuv444p14be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 14, 1, 13, 1 },        /* Y */
+            { 1, 2, 0, 0, 14, 1, 13, 1 },        /* U */
+            { 2, 2, 0, 0, 14, 1, 13, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_D3D11VA_VLD] = {
+        .name = "d3d11va_vld",
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_DXVA2_VLD] = {
+        .name = "dxva2_vld",
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_YA8] = {
+        .name = "ya8",
+        .nb_components = 2,
+        .comp = {
+            { 0, 2, 0, 0, 8, 1, 7, 1 },        /* Y */
+            { 0, 2, 1, 0, 8, 1, 7, 2 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_ALPHA,
+        .alias = "gray8a",
+    },
+    [AV_PIX_FMT_YA16LE] = {
+        .name = "ya16le",
+        .nb_components = 2,
+        .comp = {
+            { 0, 4, 0, 0, 16, 3, 15, 1 },        /* Y */
+            { 0, 4, 2, 0, 16, 3, 15, 3 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YA16BE] = {
+        .name = "ya16be",
+        .nb_components = 2,
+        .comp = {
+            { 0, 4, 0, 0, 16, 3, 15, 1 },        /* Y */
+            { 0, 4, 2, 0, 16, 3, 15, 3 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_VIDEOTOOLBOX] = {
+        .name = "videotoolbox_vld",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_GBRP] = {
+        .name = "gbrp",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* R */
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* G */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP9LE] = {
+        .name = "gbrp9le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* R */
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* G */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP9BE] = {
+        .name = "gbrp9be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 9, 1, 8, 1 },        /* R */
+            { 0, 2, 0, 0, 9, 1, 8, 1 },        /* G */
+            { 1, 2, 0, 0, 9, 1, 8, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP10LE] = {
+        .name = "gbrp10le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* R */
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* G */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP10BE] = {
+        .name = "gbrp10be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 10, 1, 9, 1 },        /* R */
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* G */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP12LE] = {
+        .name = "gbrp12le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* R */
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* G */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP12BE] = {
+        .name = "gbrp12be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* R */
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* G */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP14LE] = {
+        .name = "gbrp14le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 14, 1, 13, 1 },        /* R */
+            { 0, 2, 0, 0, 14, 1, 13, 1 },        /* G */
+            { 1, 2, 0, 0, 14, 1, 13, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP14BE] = {
+        .name = "gbrp14be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 14, 1, 13, 1 },        /* R */
+            { 0, 2, 0, 0, 14, 1, 13, 1 },        /* G */
+            { 1, 2, 0, 0, 14, 1, 13, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP16LE] = {
+        .name = "gbrp16le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 16, 1, 15, 1 },       /* R */
+            { 0, 2, 0, 0, 16, 1, 15, 1 },       /* G */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },       /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRP16BE] = {
+        .name = "gbrp16be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 16, 1, 15, 1 },       /* R */
+            { 0, 2, 0, 0, 16, 1, 15, 1 },       /* G */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },       /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRAP] = {
+        .name = "gbrap",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 1, 0, 0, 8, 0, 7, 1 },        /* R */
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* G */
+            { 1, 1, 0, 0, 8, 0, 7, 1 },        /* B */
+            { 3, 1, 0, 0, 8, 0, 7, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB |
+                 AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_GBRAP16LE] = {
+        .name = "gbrap16le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 16, 1, 15, 1 },       /* R */
+            { 0, 2, 0, 0, 16, 1, 15, 1 },       /* G */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },       /* B */
+            { 3, 2, 0, 0, 16, 1, 15, 1 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB |
+                 AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_GBRAP16BE] = {
+        .name = "gbrap16be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 16, 1, 15, 1 },       /* R */
+            { 0, 2, 0, 0, 16, 1, 15, 1 },       /* G */
+            { 1, 2, 0, 0, 16, 1, 15, 1 },       /* B */
+            { 3, 2, 0, 0, 16, 1, 15, 1 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR |
+                 AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_VDPAU] = {
+        .name = "vdpau",
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_XYZ12LE] = {
+        .name = "xyz12le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 6, 0, 4, 12, 5, 11, 1 },       /* X */
+            { 0, 6, 2, 4, 12, 5, 11, 3 },       /* Y */
+            { 0, 6, 4, 4, 12, 5, 11, 5 },       /* Z */
+      },
+      /*.flags = -- not used*/
+    },
+    [AV_PIX_FMT_XYZ12BE] = {
+        .name = "xyz12be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 6, 0, 4, 12, 5, 11, 1 },       /* X */
+            { 0, 6, 2, 4, 12, 5, 11, 3 },       /* Y */
+            { 0, 6, 4, 4, 12, 5, 11, 5 },       /* Z */
+       },
+        .flags = AV_PIX_FMT_FLAG_BE,
+    },
+
+#define BAYER8_DESC_COMMON \
+        .nb_components= 3, \
+        .log2_chroma_w= 0, \
+        .log2_chroma_h= 0, \
+        .comp = {          \
+            {0,1,0,0,2,0,1,1},\
+            {0,1,0,0,4,0,3,1},\
+            {0,1,0,0,2,0,1,1},\
+        },                 \
+
+#define BAYER16_DESC_COMMON \
+        .nb_components= 3, \
+        .log2_chroma_w= 0, \
+        .log2_chroma_h= 0, \
+        .comp = {          \
+            {0,2,0,0,4,1,3,1},\
+            {0,2,0,0,8,1,7,1},\
+            {0,2,0,0,4,1,3,1},\
+        },                 \
+
+    [AV_PIX_FMT_BAYER_BGGR8] = {
+        .name = "bayer_bggr8",
+        BAYER8_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_BGGR16LE] = {
+        .name = "bayer_bggr16le",
+        BAYER16_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_BGGR16BE] = {
+        .name = "bayer_bggr16be",
+        BAYER16_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_RGGB8] = {
+        .name = "bayer_rggb8",
+        BAYER8_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_RGGB16LE] = {
+        .name = "bayer_rggb16le",
+        BAYER16_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_RGGB16BE] = {
+        .name = "bayer_rggb16be",
+        BAYER16_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_GBRG8] = {
+        .name = "bayer_gbrg8",
+        BAYER8_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_GBRG16LE] = {
+        .name = "bayer_gbrg16le",
+        BAYER16_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_GBRG16BE] = {
+        .name = "bayer_gbrg16be",
+        BAYER16_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_GRBG8] = {
+        .name = "bayer_grbg8",
+        BAYER8_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_GRBG16LE] = {
+        .name = "bayer_grbg16le",
+        BAYER16_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_BAYER_GRBG16BE] = {
+        .name = "bayer_grbg16be",
+        BAYER16_DESC_COMMON
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_BAYER,
+    },
+    [AV_PIX_FMT_NV16] = {
+        .name = "nv16",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 2, 0, 0, 8, 1, 7, 1 },        /* U */
+            { 1, 2, 1, 0, 8, 1, 7, 2 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_NV20LE] = {
+        .name = "nv20le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 4, 0, 0, 10, 3, 9, 1 },        /* U */
+            { 1, 4, 2, 0, 10, 3, 9, 3 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_NV20BE] = {
+        .name = "nv20be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 10, 1, 9, 1 },        /* Y */
+            { 1, 4, 0, 0, 10, 3, 9, 1 },        /* U */
+            { 1, 4, 2, 0, 10, 3, 9, 3 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_BE,
+    },
+    [AV_PIX_FMT_QSV] = {
+        .name = "qsv",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_MEDIACODEC] = {
+        .name = "mediacodec",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_MMAL] = {
+        .name = "mmal",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_CUDA] = {
+        .name = "cuda",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_AYUV64LE] = {
+        .name = "ayuv64le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 8, 2, 0, 16, 7, 15, 3 },        /* Y */
+            { 0, 8, 4, 0, 16, 7, 15, 5 },        /* U */
+            { 0, 8, 6, 0, 16, 7, 15, 7 },        /* V */
+            { 0, 8, 0, 0, 16, 7, 15, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_AYUV64BE] = {
+        .name = "ayuv64be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 8, 2, 0, 16, 7, 15, 3 },        /* Y */
+            { 0, 8, 4, 0, 16, 7, 15, 5 },        /* U */
+            { 0, 8, 6, 0, 16, 7, 15, 7 },        /* V */
+            { 0, 8, 0, 0, 16, 7, 15, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_P010LE] = {
+        .name = "p010le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 6, 10, 1, 9, 1 },        /* Y */
+            { 1, 4, 0, 6, 10, 3, 9, 1 },        /* U */
+            { 1, 4, 2, 6, 10, 3, 9, 3 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_P010BE] = {
+        .name = "p010be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 6, 10, 1, 9, 1 },        /* Y */
+            { 1, 4, 0, 6, 10, 3, 9, 1 },        /* U */
+            { 1, 4, 2, 6, 10, 3, 9, 3 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_BE,
+    },
+    [AV_PIX_FMT_P016LE] = {
+        .name = "p016le",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },       /* Y */
+            { 1, 4, 0, 0, 16, 3, 15, 1 },       /* U */
+            { 1, 4, 2, 0, 16, 3, 15, 3 },       /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_P016BE] = {
+        .name = "p016be",
+        .nb_components = 3,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 1,
+        .comp = {
+            { 0, 2, 0, 0, 16, 1, 15, 1 },       /* Y */
+            { 1, 4, 0, 0, 16, 3, 15, 1 },       /* U */
+            { 1, 4, 2, 0, 16, 3, 15, 3 },       /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_BE,
+    },
+    [AV_PIX_FMT_GBRAP12LE] = {
+        .name = "gbrap12le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 12, 1, 11, 1 },       /* R */
+            { 0, 2, 0, 0, 12, 1, 11, 1 },       /* G */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },       /* B */
+            { 3, 2, 0, 0, 12, 1, 11, 1 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB |
+                 AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_GBRAP12BE] = {
+        .name = "gbrap12be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 12, 1, 11, 1 },       /* R */
+            { 0, 2, 0, 0, 12, 1, 11, 1 },       /* G */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },       /* B */
+            { 3, 2, 0, 0, 12, 1, 11, 1 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR |
+                 AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_GBRAP10LE] = {
+        .name = "gbrap10le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 10, 1, 9, 1 },       /* R */
+            { 0, 2, 0, 0, 10, 1, 9, 1 },       /* G */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },       /* B */
+            { 3, 2, 0, 0, 10, 1, 9, 1 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB |
+                 AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_GBRAP10BE] = {
+        .name = "gbrap10be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 2, 0, 0, 10, 1, 9, 1 },       /* R */
+            { 0, 2, 0, 0, 10, 1, 9, 1 },       /* G */
+            { 1, 2, 0, 0, 10, 1, 9, 1 },       /* B */
+            { 3, 2, 0, 0, 10, 1, 9, 1 },       /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR |
+                 AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_D3D11] = {
+        .name = "d3d11",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_GBRPF32BE] = {
+        .name = "gbrpf32be",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 4, 0, 0, 32, 3, 31, 1 },        /* R */
+            { 0, 4, 0, 0, 32, 3, 31, 1 },        /* G */
+            { 1, 4, 0, 0, 32, 3, 31, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR |
+                 AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_FLOAT,
+    },
+    [AV_PIX_FMT_GBRPF32LE] = {
+        .name = "gbrpf32le",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 4, 0, 0, 32, 3, 31, 1 },        /* R */
+            { 0, 4, 0, 0, 32, 3, 31, 1 },        /* G */
+            { 1, 4, 0, 0, 32, 3, 31, 1 },        /* B */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_FLOAT | AV_PIX_FMT_FLAG_RGB,
+    },
+    [AV_PIX_FMT_GBRAPF32BE] = {
+        .name = "gbrapf32be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 4, 0, 0, 32, 3, 31, 1 },        /* R */
+            { 0, 4, 0, 0, 32, 3, 31, 1 },        /* G */
+            { 1, 4, 0, 0, 32, 3, 31, 1 },        /* B */
+            { 3, 4, 0, 0, 32, 3, 31, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR |
+                 AV_PIX_FMT_FLAG_ALPHA | AV_PIX_FMT_FLAG_RGB |
+                 AV_PIX_FMT_FLAG_FLOAT,
+    },
+    [AV_PIX_FMT_GBRAPF32LE] = {
+        .name = "gbrapf32le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 2, 4, 0, 0, 32, 3, 31, 1 },        /* R */
+            { 0, 4, 0, 0, 32, 3, 31, 1 },        /* G */
+            { 1, 4, 0, 0, 32, 3, 31, 1 },        /* B */
+            { 3, 4, 0, 0, 32, 3, 31, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA |
+                 AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_FLOAT,
+    },
+    [AV_PIX_FMT_DRM_PRIME] = {
+        .name = "drm_prime",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_OPENCL] = {
+        .name  = "opencl",
+        .flags = AV_PIX_FMT_FLAG_HWACCEL,
+    },
+    [AV_PIX_FMT_GRAYF32BE] = {
+        .name = "grayf32be",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 0, 0, 32, 3, 31, 1 },       /* Y */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_FLOAT,
+        .alias = "yf32be",
+    },
+    [AV_PIX_FMT_GRAYF32LE] = {
+        .name = "grayf32le",
+        .nb_components = 1,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 4, 0, 0, 32, 3, 31, 1 },       /* Y */
+        },
+        .flags = AV_PIX_FMT_FLAG_FLOAT,
+        .alias = "yf32le",
+    },
+    [AV_PIX_FMT_YUVA422P12BE] = {
+        .name = "yuva422p12be",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+            { 3, 2, 0, 0, 12, 1, 11, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA422P12LE] = {
+        .name = "yuva422p12le",
+        .nb_components = 4,
+        .log2_chroma_w = 1,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+            { 3, 2, 0, 0, 12, 1, 11, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA444P12BE] = {
+        .name = "yuva444p12be",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+            { 3, 2, 0, 0, 12, 1, 11, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_BE | AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_YUVA444P12LE] = {
+        .name = "yuva444p12le",
+        .nb_components = 4,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 2, 0, 0, 12, 1, 11, 1 },        /* Y */
+            { 1, 2, 0, 0, 12, 1, 11, 1 },        /* U */
+            { 2, 2, 0, 0, 12, 1, 11, 1 },        /* V */
+            { 3, 2, 0, 0, 12, 1, 11, 1 },        /* A */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_ALPHA,
+    },
+    [AV_PIX_FMT_NV24] = {
+        .name = "nv24",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 2, 0, 0, 8, 1, 7, 1 },        /* U */
+            { 1, 2, 1, 0, 8, 1, 7, 2 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+    [AV_PIX_FMT_NV42] = {
+        .name = "nv42",
+        .nb_components = 3,
+        .log2_chroma_w = 0,
+        .log2_chroma_h = 0,
+        .comp = {
+            { 0, 1, 0, 0, 8, 0, 7, 1 },        /* Y */
+            { 1, 2, 1, 0, 8, 1, 7, 2 },        /* U */
+            { 1, 2, 0, 0, 8, 1, 7, 1 },        /* V */
+        },
+        .flags = AV_PIX_FMT_FLAG_PLANAR,
+    },
+};
+#if FF_API_PLUS1_MINUS1
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
+static const char * const color_range_names[] = {
+    [AVCOL_RANGE_UNSPECIFIED] = "unknown",
+    [AVCOL_RANGE_MPEG] = "tv",
+    [AVCOL_RANGE_JPEG] = "pc",
+};
+
+static const char * const color_primaries_names[AVCOL_PRI_NB] = {
+    [AVCOL_PRI_RESERVED0] = "reserved",
+    [AVCOL_PRI_BT709] = "bt709",
+    [AVCOL_PRI_UNSPECIFIED] = "unknown",
+    [AVCOL_PRI_RESERVED] = "reserved",
+    [AVCOL_PRI_BT470M] = "bt470m",
+    [AVCOL_PRI_BT470BG] = "bt470bg",
+    [AVCOL_PRI_SMPTE170M] = "smpte170m",
+    [AVCOL_PRI_SMPTE240M] = "smpte240m",
+    [AVCOL_PRI_FILM] = "film",
+    [AVCOL_PRI_BT2020] = "bt2020",
+    [AVCOL_PRI_SMPTE428] = "smpte428",
+    [AVCOL_PRI_SMPTE431] = "smpte431",
+    [AVCOL_PRI_SMPTE432] = "smpte432",
+    [AVCOL_PRI_JEDEC_P22] = "jedec-p22",
+};
+
+static const char * const color_transfer_names[] = {
+    [AVCOL_TRC_RESERVED0] = "reserved",
+    [AVCOL_TRC_BT709] = "bt709",
+    [AVCOL_TRC_UNSPECIFIED] = "unknown",
+    [AVCOL_TRC_RESERVED] = "reserved",
+    [AVCOL_TRC_GAMMA22] = "bt470m",
+    [AVCOL_TRC_GAMMA28] = "bt470bg",
+    [AVCOL_TRC_SMPTE170M] = "smpte170m",
+    [AVCOL_TRC_SMPTE240M] = "smpte240m",
+    [AVCOL_TRC_LINEAR] = "linear",
+    [AVCOL_TRC_LOG] = "log100",
+    [AVCOL_TRC_LOG_SQRT] = "log316",
+    [AVCOL_TRC_IEC61966_2_4] = "iec61966-2-4",
+    [AVCOL_TRC_BT1361_ECG] = "bt1361e",
+    [AVCOL_TRC_IEC61966_2_1] = "iec61966-2-1",
+    [AVCOL_TRC_BT2020_10] = "bt2020-10",
+    [AVCOL_TRC_BT2020_12] = "bt2020-12",
+    [AVCOL_TRC_SMPTE2084] = "smpte2084",
+    [AVCOL_TRC_SMPTE428] = "smpte428",
+    [AVCOL_TRC_ARIB_STD_B67] = "arib-std-b67",
+};
+
+static const char * const color_space_names[] = {
+    [AVCOL_SPC_RGB] = "gbr",
+    [AVCOL_SPC_BT709] = "bt709",
+    [AVCOL_SPC_UNSPECIFIED] = "unknown",
+    [AVCOL_SPC_RESERVED] = "reserved",
+    [AVCOL_SPC_FCC] = "fcc",
+    [AVCOL_SPC_BT470BG] = "bt470bg",
+    [AVCOL_SPC_SMPTE170M] = "smpte170m",
+    [AVCOL_SPC_SMPTE240M] = "smpte240m",
+    [AVCOL_SPC_YCGCO] = "ycgco",
+    [AVCOL_SPC_BT2020_NCL] = "bt2020nc",
+    [AVCOL_SPC_BT2020_CL] = "bt2020c",
+    [AVCOL_SPC_SMPTE2085] = "smpte2085",
+    [AVCOL_SPC_CHROMA_DERIVED_NCL] = "chroma-derived-nc",
+    [AVCOL_SPC_CHROMA_DERIVED_CL] = "chroma-derived-c",
+    [AVCOL_SPC_ICTCP] = "ictcp",
+};
+
+static const char * const chroma_location_names[] = {
+    [AVCHROMA_LOC_UNSPECIFIED] = "unspecified",
+    [AVCHROMA_LOC_LEFT] = "left",
+    [AVCHROMA_LOC_CENTER] = "center",
+    [AVCHROMA_LOC_TOPLEFT] = "topleft",
+    [AVCHROMA_LOC_TOP] = "top",
+    [AVCHROMA_LOC_BOTTOMLEFT] = "bottomleft",
+    [AVCHROMA_LOC_BOTTOM] = "bottom",
+};
+
+static enum AVPixelFormat get_pix_fmt_internal(const char *name)
+{
+    enum AVPixelFormat pix_fmt;
+
+    for (pix_fmt = 0; pix_fmt < AV_PIX_FMT_NB; pix_fmt++)
+        if (av_pix_fmt_descriptors[pix_fmt].name &&
+            (!strcmp(av_pix_fmt_descriptors[pix_fmt].name, name) ||
+             av_match_name(name, av_pix_fmt_descriptors[pix_fmt].alias)))
+            return pix_fmt;
+
+    return AV_PIX_FMT_NONE;
+}
+
+const char *av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
+{
+    return (unsigned)pix_fmt < AV_PIX_FMT_NB ?
+        av_pix_fmt_descriptors[pix_fmt].name : NULL;
+}
+
+#if HAVE_BIGENDIAN
+#   define X_NE(be, le) be
+#else
+#   define X_NE(be, le) le
+#endif
+
+enum AVPixelFormat av_get_pix_fmt(const char *name)
+{
+    enum AVPixelFormat pix_fmt;
+
+    if (!strcmp(name, "rgb32"))
+        name = X_NE("argb", "bgra");
+    else if (!strcmp(name, "bgr32"))
+        name = X_NE("abgr", "rgba");
+
+    pix_fmt = get_pix_fmt_internal(name);
+    if (pix_fmt == AV_PIX_FMT_NONE) {
+        char name2[32];
+
+        snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
+        pix_fmt = get_pix_fmt_internal(name2);
+    }
+
+#if FF_API_VAAPI
+    if (pix_fmt == AV_PIX_FMT_NONE && !strcmp(name, "vaapi"))
+        pix_fmt = AV_PIX_FMT_VAAPI;
+#endif
+    return pix_fmt;
+}
+
+int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
+{
+    int c, bits = 0;
+    int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
+
+    for (c = 0; c < pixdesc->nb_components; c++) {
+        int s = c == 1 || c == 2 ? 0 : log2_pixels;
+        bits += pixdesc->comp[c].depth << s;
+    }
+
+    return bits >> log2_pixels;
+}
+
+int av_get_padded_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
+{
+    int c, bits = 0;
+    int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
+    int steps[4] = {0};
+
+    for (c = 0; c < pixdesc->nb_components; c++) {
+        const AVComponentDescriptor *comp = &pixdesc->comp[c];
+        int s = c == 1 || c == 2 ? 0 : log2_pixels;
+        steps[comp->plane] = comp->step << s;
+    }
+    for (c = 0; c < 4; c++)
+        bits += steps[c];
+
+    if(!(pixdesc->flags & AV_PIX_FMT_FLAG_BITSTREAM))
+        bits *= 8;
+
+    return bits >> log2_pixels;
+}
+
+char *av_get_pix_fmt_string(char *buf, int buf_size,
+                            enum AVPixelFormat pix_fmt)
+{
+    /* print header */
+    if (pix_fmt < 0) {
+       snprintf (buf, buf_size, "name" " nb_components" " nb_bits");
+    } else {
+        const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[pix_fmt];
+        snprintf(buf, buf_size, "%-11s %7d %10d", pixdesc->name,
+                 pixdesc->nb_components, av_get_bits_per_pixel(pixdesc));
+    }
+
+    return buf;
+}
+
+const AVPixFmtDescriptor *av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
+{
+    if (pix_fmt < 0 || pix_fmt >= AV_PIX_FMT_NB)
+        return NULL;
+    return &av_pix_fmt_descriptors[pix_fmt];
+}
+
+const AVPixFmtDescriptor *av_pix_fmt_desc_next(const AVPixFmtDescriptor *prev)
+{
+    if (!prev)
+        return &av_pix_fmt_descriptors[0];
+    while (prev - av_pix_fmt_descriptors < FF_ARRAY_ELEMS(av_pix_fmt_descriptors) - 1) {
+        prev++;
+        if (prev->name)
+            return prev;
+    }
+    return NULL;
+}
+
+enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc)
+{
+    if (desc < av_pix_fmt_descriptors ||
+        desc >= av_pix_fmt_descriptors + FF_ARRAY_ELEMS(av_pix_fmt_descriptors))
+        return AV_PIX_FMT_NONE;
+
+    return desc - av_pix_fmt_descriptors;
+}
+
+int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt,
+                                     int *h_shift, int *v_shift)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    if (!desc)
+        return AVERROR(ENOSYS);
+    *h_shift = desc->log2_chroma_w;
+    *v_shift = desc->log2_chroma_h;
+
+    return 0;
+}
+
+int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    int i, planes[4] = { 0 }, ret = 0;
+
+    if (!desc)
+        return AVERROR(EINVAL);
+
+    for (i = 0; i < desc->nb_components; i++)
+        planes[desc->comp[i].plane] = 1;
+    for (i = 0; i < FF_ARRAY_ELEMS(planes); i++)
+        ret += planes[i];
+    return ret;
+}
+
+void ff_check_pixfmt_descriptors(void){
+    int i, j;
+
+    for (i=0; i<FF_ARRAY_ELEMS(av_pix_fmt_descriptors); i++) {
+        const AVPixFmtDescriptor *d = &av_pix_fmt_descriptors[i];
+        uint8_t fill[4][8+6+3] = {{0}};
+        uint8_t *data[4] = {fill[0], fill[1], fill[2], fill[3]};
+        int linesize[4] = {0,0,0,0};
+        uint16_t tmp[2];
+
+        if (!d->name && !d->nb_components && !d->log2_chroma_w && !d->log2_chroma_h && !d->flags)
+            continue;
+//         av_log(NULL, AV_LOG_DEBUG, "Checking: %s\n", d->name);
+        av_assert0(d->log2_chroma_w <= 3);
+        av_assert0(d->log2_chroma_h <= 3);
+        av_assert0(d->nb_components <= 4);
+        av_assert0(d->name && d->name[0]);
+        av_assert2(av_get_pix_fmt(d->name) == i);
+
+        for (j=0; j<FF_ARRAY_ELEMS(d->comp); j++) {
+            const AVComponentDescriptor *c = &d->comp[j];
+            if(j>=d->nb_components) {
+                av_assert0(!c->plane && !c->step && !c->offset && !c->shift && !c->depth);
+                continue;
+            }
+            if (d->flags & AV_PIX_FMT_FLAG_BITSTREAM) {
+                av_assert0(c->step >= c->depth);
+            } else {
+                av_assert0(8*c->step >= c->depth);
+            }
+            if (d->flags & AV_PIX_FMT_FLAG_BAYER)
+                continue;
+            av_read_image_line(tmp, (void*)data, linesize, d, 0, 0, j, 2, 0);
+            av_assert0(tmp[0] == 0 && tmp[1] == 0);
+            tmp[0] = tmp[1] = (1<<c->depth) - 1;
+            av_write_image_line(tmp, data, linesize, d, 0, 0, j, 2);
+        }
+    }
+}
+
+
+enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    char name[16];
+    int i;
+
+    if (!desc || strlen(desc->name) < 2)
+        return AV_PIX_FMT_NONE;
+    av_strlcpy(name, desc->name, sizeof(name));
+    i = strlen(name) - 2;
+    if (strcmp(name + i, "be") && strcmp(name + i, "le"))
+        return AV_PIX_FMT_NONE;
+
+    name[i] ^= 'b' ^ 'l';
+
+    return get_pix_fmt_internal(name);
+}
+
+#define FF_COLOR_NA      -1
+#define FF_COLOR_RGB      0 /**< RGB color space */
+#define FF_COLOR_GRAY     1 /**< gray color space */
+#define FF_COLOR_YUV      2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
+#define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
+#define FF_COLOR_XYZ      4
+
+#define pixdesc_has_alpha(pixdesc) \
+    ((pixdesc)->flags & AV_PIX_FMT_FLAG_ALPHA)
+
+
+static int get_color_type(const AVPixFmtDescriptor *desc) {
+    if (desc->flags & AV_PIX_FMT_FLAG_PAL)
+        return FF_COLOR_RGB;
+
+    if(desc->nb_components == 1 || desc->nb_components == 2)
+        return FF_COLOR_GRAY;
+
+    if(desc->name && !strncmp(desc->name, "yuvj", 4))
+        return FF_COLOR_YUV_JPEG;
+
+    if(desc->name && !strncmp(desc->name, "xyz", 3))
+        return FF_COLOR_XYZ;
+
+    if(desc->flags & AV_PIX_FMT_FLAG_RGB)
+        return  FF_COLOR_RGB;
+
+    if(desc->nb_components == 0)
+        return FF_COLOR_NA;
+
+    return FF_COLOR_YUV;
+}
+
+static int get_pix_fmt_depth(int *min, int *max, enum AVPixelFormat pix_fmt)
+{
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+    int i;
+
+    if (!desc || !desc->nb_components) {
+        *min = *max = 0;
+        return AVERROR(EINVAL);
+    }
+
+    *min = INT_MAX, *max = -INT_MAX;
+    for (i = 0; i < desc->nb_components; i++) {
+        *min = FFMIN(desc->comp[i].depth, *min);
+        *max = FFMAX(desc->comp[i].depth, *max);
+    }
+    return 0;
+}
+
+static int get_pix_fmt_score(enum AVPixelFormat dst_pix_fmt,
+                              enum AVPixelFormat src_pix_fmt,
+                              unsigned *lossp, unsigned consider)
+{
+    const AVPixFmtDescriptor *src_desc = av_pix_fmt_desc_get(src_pix_fmt);
+    const AVPixFmtDescriptor *dst_desc = av_pix_fmt_desc_get(dst_pix_fmt);
+    int src_color, dst_color;
+    int src_min_depth, src_max_depth, dst_min_depth, dst_max_depth;
+    int ret, loss, i, nb_components;
+    int score = INT_MAX - 1;
+
+    if (!src_desc || !dst_desc)
+        return -4;
+
+    if ((src_desc->flags & AV_PIX_FMT_FLAG_HWACCEL) ||
+        (dst_desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) {
+        if (dst_pix_fmt == src_pix_fmt)
+            return -1;
+        else
+            return -2;
+    }
+
+    /* compute loss */
+    *lossp = loss = 0;
+
+    if (dst_pix_fmt == src_pix_fmt)
+        return INT_MAX;
+
+    if ((ret = get_pix_fmt_depth(&src_min_depth, &src_max_depth, src_pix_fmt)) < 0)
+        return -3;
+    if ((ret = get_pix_fmt_depth(&dst_min_depth, &dst_max_depth, dst_pix_fmt)) < 0)
+        return -3;
+
+    src_color = get_color_type(src_desc);
+    dst_color = get_color_type(dst_desc);
+    if (dst_pix_fmt == AV_PIX_FMT_PAL8)
+        nb_components = FFMIN(src_desc->nb_components, 4);
+    else
+        nb_components = FFMIN(src_desc->nb_components, dst_desc->nb_components);
+
+    for (i = 0; i < nb_components; i++) {
+        int depth_minus1 = (dst_pix_fmt == AV_PIX_FMT_PAL8) ? 7/nb_components : (dst_desc->comp[i].depth - 1);
+        if (src_desc->comp[i].depth - 1 > depth_minus1 && (consider & FF_LOSS_DEPTH)) {
+            loss |= FF_LOSS_DEPTH;
+            score -= 65536 >> depth_minus1;
+        }
+    }
+
+    if (consider & FF_LOSS_RESOLUTION) {
+        if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w) {
+            loss |= FF_LOSS_RESOLUTION;
+            score -= 256 << dst_desc->log2_chroma_w;
+        }
+        if (dst_desc->log2_chroma_h > src_desc->log2_chroma_h) {
+            loss |= FF_LOSS_RESOLUTION;
+            score -= 256 << dst_desc->log2_chroma_h;
+        }
+        // don't favor 422 over 420 if downsampling is needed, because 420 has much better support on the decoder side
+        if (dst_desc->log2_chroma_w == 1 && src_desc->log2_chroma_w == 0 &&
+            dst_desc->log2_chroma_h == 1 && src_desc->log2_chroma_h == 0 ) {
+            score += 512;
+        }
+    }
+
+    if(consider & FF_LOSS_COLORSPACE)
+    switch(dst_color) {
+    case FF_COLOR_RGB:
+        if (src_color != FF_COLOR_RGB &&
+            src_color != FF_COLOR_GRAY)
+            loss |= FF_LOSS_COLORSPACE;
+        break;
+    case FF_COLOR_GRAY:
+        if (src_color != FF_COLOR_GRAY)
+            loss |= FF_LOSS_COLORSPACE;
+        break;
+    case FF_COLOR_YUV:
+        if (src_color != FF_COLOR_YUV)
+            loss |= FF_LOSS_COLORSPACE;
+        break;
+    case FF_COLOR_YUV_JPEG:
+        if (src_color != FF_COLOR_YUV_JPEG &&
+            src_color != FF_COLOR_YUV &&
+            src_color != FF_COLOR_GRAY)
+            loss |= FF_LOSS_COLORSPACE;
+        break;
+    default:
+        /* fail safe test */
+        if (src_color != dst_color)
+            loss |= FF_LOSS_COLORSPACE;
+        break;
+    }
+    if(loss & FF_LOSS_COLORSPACE)
+        score -= (nb_components * 65536) >> FFMIN(dst_desc->comp[0].depth - 1, src_desc->comp[0].depth - 1);
+
+    if (dst_color == FF_COLOR_GRAY &&
+        src_color != FF_COLOR_GRAY && (consider & FF_LOSS_CHROMA)) {
+        loss |= FF_LOSS_CHROMA;
+        score -= 2 * 65536;
+    }
+    if (!pixdesc_has_alpha(dst_desc) && (pixdesc_has_alpha(src_desc) && (consider & FF_LOSS_ALPHA))) {
+        loss |= FF_LOSS_ALPHA;
+        score -= 65536;
+    }
+    if (dst_pix_fmt == AV_PIX_FMT_PAL8 && (consider & FF_LOSS_COLORQUANT) &&
+        (src_pix_fmt != AV_PIX_FMT_PAL8 && (src_color != FF_COLOR_GRAY || (pixdesc_has_alpha(src_desc) && (consider & FF_LOSS_ALPHA))))) {
+        loss |= FF_LOSS_COLORQUANT;
+        score -= 65536;
+    }
+
+    *lossp = loss;
+    return score;
+}
+
+int av_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt,
+                            enum AVPixelFormat src_pix_fmt,
+                            int has_alpha)
+{
+    int loss;
+    int ret = get_pix_fmt_score(dst_pix_fmt, src_pix_fmt, &loss, has_alpha ? ~0 : ~FF_LOSS_ALPHA);
+    if (ret < 0)
+        return ret;
+    return loss;
+}
+
+enum AVPixelFormat av_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
+                                             enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr)
+{
+    enum AVPixelFormat dst_pix_fmt;
+    int loss1, loss2, loss_mask;
+    const AVPixFmtDescriptor *desc1 = av_pix_fmt_desc_get(dst_pix_fmt1);
+    const AVPixFmtDescriptor *desc2 = av_pix_fmt_desc_get(dst_pix_fmt2);
+    int score1, score2;
+
+    if (!desc1) {
+        dst_pix_fmt = dst_pix_fmt2;
+    } else if (!desc2) {
+        dst_pix_fmt = dst_pix_fmt1;
+    } else {
+        loss_mask= loss_ptr?~*loss_ptr:~0; /* use loss mask if provided */
+        if(!has_alpha)
+            loss_mask &= ~FF_LOSS_ALPHA;
+
+        score1 = get_pix_fmt_score(dst_pix_fmt1, src_pix_fmt, &loss1, loss_mask);
+        score2 = get_pix_fmt_score(dst_pix_fmt2, src_pix_fmt, &loss2, loss_mask);
+
+        if (score1 == score2) {
+            if(av_get_padded_bits_per_pixel(desc2) != av_get_padded_bits_per_pixel(desc1)) {
+                dst_pix_fmt = av_get_padded_bits_per_pixel(desc2) < av_get_padded_bits_per_pixel(desc1) ? dst_pix_fmt2 : dst_pix_fmt1;
+            } else {
+                dst_pix_fmt = desc2->nb_components < desc1->nb_components ? dst_pix_fmt2 : dst_pix_fmt1;
+            }
+        } else {
+            dst_pix_fmt = score1 < score2 ? dst_pix_fmt2 : dst_pix_fmt1;
+        }
+    }
+
+    if (loss_ptr)
+        *loss_ptr = av_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
+    return dst_pix_fmt;
+}
+
+const char *av_color_range_name(enum AVColorRange range)
+{
+    return (unsigned) range < AVCOL_RANGE_NB ?
+        color_range_names[range] : NULL;
+}
+
+int av_color_range_from_name(const char *name)
+{
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(color_range_names); i++) {
+        size_t len = strlen(color_range_names[i]);
+        if (!strncmp(color_range_names[i], name, len))
+            return i;
+    }
+
+    return AVERROR(EINVAL);
+}
+
+const char *av_color_primaries_name(enum AVColorPrimaries primaries)
+{
+    return (unsigned) primaries < AVCOL_PRI_NB ?
+        color_primaries_names[primaries] : NULL;
+}
+
+int av_color_primaries_from_name(const char *name)
+{
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(color_primaries_names); i++) {
+        size_t len;
+
+        if (!color_primaries_names[i])
+            continue;
+
+        len = strlen(color_primaries_names[i]);
+        if (!strncmp(color_primaries_names[i], name, len))
+            return i;
+    }
+
+    return AVERROR(EINVAL);
+}
+
+const char *av_color_transfer_name(enum AVColorTransferCharacteristic transfer)
+{
+    return (unsigned) transfer < AVCOL_TRC_NB ?
+        color_transfer_names[transfer] : NULL;
+}
+
+int av_color_transfer_from_name(const char *name)
+{
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(color_transfer_names); i++) {
+        size_t len;
+
+        if (!color_transfer_names[i])
+            continue;
+
+        len = strlen(color_transfer_names[i]);
+        if (!strncmp(color_transfer_names[i], name, len))
+            return i;
+    }
+
+    return AVERROR(EINVAL);
+}
+
+const char *av_color_space_name(enum AVColorSpace space)
+{
+    return (unsigned) space < AVCOL_SPC_NB ?
+        color_space_names[space] : NULL;
+}
+
+int av_color_space_from_name(const char *name)
+{
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(color_space_names); i++) {
+        size_t len;
+
+        if (!color_space_names[i])
+            continue;
+
+        len = strlen(color_space_names[i]);
+        if (!strncmp(color_space_names[i], name, len))
+            return i;
+    }
+
+    return AVERROR(EINVAL);
+}
+
+const char *av_chroma_location_name(enum AVChromaLocation location)
+{
+    return (unsigned) location < AVCHROMA_LOC_NB ?
+        chroma_location_names[location] : NULL;
+}
+
+int av_chroma_location_from_name(const char *name)
+{
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(chroma_location_names); i++) {
+        size_t len;
+
+        if (!chroma_location_names[i])
+            continue;
+
+        len = strlen(chroma_location_names[i]);
+        if (!strncmp(chroma_location_names[i], name, len))
+            return i;
+    }
+
+    return AVERROR(EINVAL);
+}
diff --git a/media/ffvpx/libavutil/pixdesc.h b/media/ffvpx/libavutil/pixdesc.h
new file mode 100644
index 0000000000..c055810ae8
--- /dev/null
+++ b/media/ffvpx/libavutil/pixdesc.h
@@ -0,0 +1,440 @@
+/*
+ * pixel format descriptor
+ * Copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_PIXDESC_H
+#define AVUTIL_PIXDESC_H
+
+#include <inttypes.h>
+
+#include "attributes.h"
+#include "pixfmt.h"
+#include "version.h"
+
+typedef struct AVComponentDescriptor {
+    /**
+     * Which of the 4 planes contains the component.
+     */
+    int plane;
+
+    /**
+     * Number of elements between 2 horizontally consecutive pixels.
+     * Elements are bits for bitstream formats, bytes otherwise.
+     */
+    int step;
+
+    /**
+     * Number of elements before the component of the first pixel.
+     * Elements are bits for bitstream formats, bytes otherwise.
+     */
+    int offset;
+
+    /**
+     * Number of least significant bits that must be shifted away
+     * to get the value.
+     */
+    int shift;
+
+    /**
+     * Number of bits in the component.
+     */
+    int depth;
+
+#if FF_API_PLUS1_MINUS1
+    /** deprecated, use step instead */
+    attribute_deprecated int step_minus1;
+
+    /** deprecated, use depth instead */
+    attribute_deprecated int depth_minus1;
+
+    /** deprecated, use offset instead */
+    attribute_deprecated int offset_plus1;
+#endif
+} AVComponentDescriptor;
+
+/**
+ * Descriptor that unambiguously describes how the bits of a pixel are
+ * stored in the up to 4 data planes of an image. It also stores the
+ * subsampling factors and number of components.
+ *
+ * @note This is separate of the colorspace (RGB, YCbCr, YPbPr, JPEG-style YUV
+ *       and all the YUV variants) AVPixFmtDescriptor just stores how values
+ *       are stored not what these values represent.
+ */
+typedef struct AVPixFmtDescriptor {
+    const char *name;
+    uint8_t nb_components;  ///< The number of components each pixel has, (1-4)
+
+    /**
+     * Amount to shift the luma width right to find the chroma width.
+     * For YV12 this is 1 for example.
+     * chroma_width = AV_CEIL_RSHIFT(luma_width, log2_chroma_w)
+     * The note above is needed to ensure rounding up.
+     * This value only refers to the chroma components.
+     */
+    uint8_t log2_chroma_w;
+
+    /**
+     * Amount to shift the luma height right to find the chroma height.
+     * For YV12 this is 1 for example.
+     * chroma_height= AV_CEIL_RSHIFT(luma_height, log2_chroma_h)
+     * The note above is needed to ensure rounding up.
+     * This value only refers to the chroma components.
+     */
+    uint8_t log2_chroma_h;
+
+    /**
+     * Combination of AV_PIX_FMT_FLAG_... flags.
+     */
+    uint64_t flags;
+
+    /**
+     * Parameters that describe how pixels are packed.
+     * If the format has 1 or 2 components, then luma is 0.
+     * If the format has 3 or 4 components:
+     *   if the RGB flag is set then 0 is red, 1 is green and 2 is blue;
+     *   otherwise 0 is luma, 1 is chroma-U and 2 is chroma-V.
+     *
+     * If present, the Alpha channel is always the last component.
+     */
+    AVComponentDescriptor comp[4];
+
+    /**
+     * Alternative comma-separated names.
+     */
+    const char *alias;
+} AVPixFmtDescriptor;
+
+/**
+ * Pixel format is big-endian.
+ */
+#define AV_PIX_FMT_FLAG_BE           (1 << 0)
+/**
+ * Pixel format has a palette in data[1], values are indexes in this palette.
+ */
+#define AV_PIX_FMT_FLAG_PAL          (1 << 1)
+/**
+ * All values of a component are bit-wise packed end to end.
+ */
+#define AV_PIX_FMT_FLAG_BITSTREAM    (1 << 2)
+/**
+ * Pixel format is an HW accelerated format.
+ */
+#define AV_PIX_FMT_FLAG_HWACCEL      (1 << 3)
+/**
+ * At least one pixel component is not in the first data plane.
+ */
+#define AV_PIX_FMT_FLAG_PLANAR       (1 << 4)
+/**
+ * The pixel format contains RGB-like data (as opposed to YUV/grayscale).
+ */
+#define AV_PIX_FMT_FLAG_RGB          (1 << 5)
+
+/**
+ * The pixel format is "pseudo-paletted". This means that it contains a
+ * fixed palette in the 2nd plane but the palette is fixed/constant for each
+ * PIX_FMT. This allows interpreting the data as if it was PAL8, which can
+ * in some cases be simpler. Or the data can be interpreted purely based on
+ * the pixel format without using the palette.
+ * An example of a pseudo-paletted format is AV_PIX_FMT_GRAY8
+ *
+ * @deprecated This flag is deprecated, and will be removed. When it is removed,
+ * the extra palette allocation in AVFrame.data[1] is removed as well. Only
+ * actual paletted formats (as indicated by AV_PIX_FMT_FLAG_PAL) will have a
+ * palette. Starting with FFmpeg versions which have this flag deprecated, the
+ * extra "pseudo" palette is already ignored, and API users are not required to
+ * allocate a palette for AV_PIX_FMT_FLAG_PSEUDOPAL formats (it was required
+ * before the deprecation, though).
+ */
+#define AV_PIX_FMT_FLAG_PSEUDOPAL    (1 << 6)
+
+/**
+ * The pixel format has an alpha channel. This is set on all formats that
+ * support alpha in some way, including AV_PIX_FMT_PAL8. The alpha is always
+ * straight, never pre-multiplied.
+ *
+ * If a codec or a filter does not support alpha, it should set all alpha to
+ * opaque, or use the equivalent pixel formats without alpha component, e.g.
+ * AV_PIX_FMT_RGB0 (or AV_PIX_FMT_RGB24 etc.) instead of AV_PIX_FMT_RGBA.
+ */
+#define AV_PIX_FMT_FLAG_ALPHA        (1 << 7)
+
+/**
+ * The pixel format is following a Bayer pattern
+ */
+#define AV_PIX_FMT_FLAG_BAYER        (1 << 8)
+
+/**
+ * The pixel format contains IEEE-754 floating point values. Precision (double,
+ * single, or half) should be determined by the pixel size (64, 32, or 16 bits).
+ */
+#define AV_PIX_FMT_FLAG_FLOAT        (1 << 9)
+
+/**
+ * Return the number of bits per pixel used by the pixel format
+ * described by pixdesc. Note that this is not the same as the number
+ * of bits per sample.
+ *
+ * The returned number of bits refers to the number of bits actually
+ * used for storing the pixel information, that is padding bits are
+ * not counted.
+ */
+int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc);
+
+/**
+ * Return the number of bits per pixel for the pixel format
+ * described by pixdesc, including any padding or unused bits.
+ */
+int av_get_padded_bits_per_pixel(const AVPixFmtDescriptor *pixdesc);
+
+/**
+ * @return a pixel format descriptor for provided pixel format or NULL if
+ * this pixel format is unknown.
+ */
+const AVPixFmtDescriptor *av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt);
+
+/**
+ * Iterate over all pixel format descriptors known to libavutil.
+ *
+ * @param prev previous descriptor. NULL to get the first descriptor.
+ *
+ * @return next descriptor or NULL after the last descriptor
+ */
+const AVPixFmtDescriptor *av_pix_fmt_desc_next(const AVPixFmtDescriptor *prev);
+
+/**
+ * @return an AVPixelFormat id described by desc, or AV_PIX_FMT_NONE if desc
+ * is not a valid pointer to a pixel format descriptor.
+ */
+enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc);
+
+/**
+ * Utility function to access log2_chroma_w log2_chroma_h from
+ * the pixel format AVPixFmtDescriptor.
+ *
+ * @param[in]  pix_fmt the pixel format
+ * @param[out] h_shift store log2_chroma_w (horizontal/width shift)
+ * @param[out] v_shift store log2_chroma_h (vertical/height shift)
+ *
+ * @return 0 on success, AVERROR(ENOSYS) on invalid or unknown pixel format
+ */
+int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt,
+                                     int *h_shift, int *v_shift);
+
+/**
+ * @return number of planes in pix_fmt, a negative AVERROR if pix_fmt is not a
+ * valid pixel format.
+ */
+int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt);
+
+/**
+ * @return the name for provided color range or NULL if unknown.
+ */
+const char *av_color_range_name(enum AVColorRange range);
+
+/**
+ * @return the AVColorRange value for name or an AVError if not found.
+ */
+int av_color_range_from_name(const char *name);
+
+/**
+ * @return the name for provided color primaries or NULL if unknown.
+ */
+const char *av_color_primaries_name(enum AVColorPrimaries primaries);
+
+/**
+ * @return the AVColorPrimaries value for name or an AVError if not found.
+ */
+int av_color_primaries_from_name(const char *name);
+
+/**
+ * @return the name for provided color transfer or NULL if unknown.
+ */
+const char *av_color_transfer_name(enum AVColorTransferCharacteristic transfer);
+
+/**
+ * @return the AVColorTransferCharacteristic value for name or an AVError if not found.
+ */
+int av_color_transfer_from_name(const char *name);
+
+/**
+ * @return the name for provided color space or NULL if unknown.
+ */
+const char *av_color_space_name(enum AVColorSpace space);
+
+/**
+ * @return the AVColorSpace value for name or an AVError if not found.
+ */
+int av_color_space_from_name(const char *name);
+
+/**
+ * @return the name for provided chroma location or NULL if unknown.
+ */
+const char *av_chroma_location_name(enum AVChromaLocation location);
+
+/**
+ * @return the AVChromaLocation value for name or an AVError if not found.
+ */
+int av_chroma_location_from_name(const char *name);
+
+/**
+ * Return the pixel format corresponding to name.
+ *
+ * If there is no pixel format with name name, then looks for a
+ * pixel format with the name corresponding to the native endian
+ * format of name.
+ * For example in a little-endian system, first looks for "gray16",
+ * then for "gray16le".
+ *
+ * Finally if no pixel format has been found, returns AV_PIX_FMT_NONE.
+ */
+enum AVPixelFormat av_get_pix_fmt(const char *name);
+
+/**
+ * Return the short name for a pixel format, NULL in case pix_fmt is
+ * unknown.
+ *
+ * @see av_get_pix_fmt(), av_get_pix_fmt_string()
+ */
+const char *av_get_pix_fmt_name(enum AVPixelFormat pix_fmt);
+
+/**
+ * Print in buf the string corresponding to the pixel format with
+ * number pix_fmt, or a header if pix_fmt is negative.
+ *
+ * @param buf the buffer where to write the string
+ * @param buf_size the size of buf
+ * @param pix_fmt the number of the pixel format to print the
+ * corresponding info string, or a negative value to print the
+ * corresponding header.
+ */
+char *av_get_pix_fmt_string(char *buf, int buf_size,
+                            enum AVPixelFormat pix_fmt);
+
+/**
+ * Read a line from an image, and write the values of the
+ * pixel format component c to dst.
+ *
+ * @param data the array containing the pointers to the planes of the image
+ * @param linesize the array containing the linesizes of the image
+ * @param desc the pixel format descriptor for the image
+ * @param x the horizontal coordinate of the first pixel to read
+ * @param y the vertical coordinate of the first pixel to read
+ * @param w the width of the line to read, that is the number of
+ * values to write to dst
+ * @param read_pal_component if not zero and the format is a paletted
+ * format writes the values corresponding to the palette
+ * component c in data[1] to dst, rather than the palette indexes in
+ * data[0]. The behavior is undefined if the format is not paletted.
+ * @param dst_element_size size of elements in dst array (2 or 4 byte)
+ */
+void av_read_image_line2(void *dst, const uint8_t *data[4],
+                        const int linesize[4], const AVPixFmtDescriptor *desc,
+                        int x, int y, int c, int w, int read_pal_component,
+                        int dst_element_size);
+
+void av_read_image_line(uint16_t *dst, const uint8_t *data[4],
+                        const int linesize[4], const AVPixFmtDescriptor *desc,
+                        int x, int y, int c, int w, int read_pal_component);
+
+/**
+ * Write the values from src to the pixel format component c of an
+ * image line.
+ *
+ * @param src array containing the values to write
+ * @param data the array containing the pointers to the planes of the
+ * image to write into. It is supposed to be zeroed.
+ * @param linesize the array containing the linesizes of the image
+ * @param desc the pixel format descriptor for the image
+ * @param x the horizontal coordinate of the first pixel to write
+ * @param y the vertical coordinate of the first pixel to write
+ * @param w the width of the line to write, that is the number of
+ * values to write to the image line
+ * @param src_element_size size of elements in src array (2 or 4 byte)
+ */
+void av_write_image_line2(const void *src, uint8_t *data[4],
+                         const int linesize[4], const AVPixFmtDescriptor *desc,
+                         int x, int y, int c, int w, int src_element_size);
+
+void av_write_image_line(const uint16_t *src, uint8_t *data[4],
+                         const int linesize[4], const AVPixFmtDescriptor *desc,
+                         int x, int y, int c, int w);
+
+/**
+ * Utility function to swap the endianness of a pixel format.
+ *
+ * @param[in]  pix_fmt the pixel format
+ *
+ * @return pixel format with swapped endianness if it exists,
+ * otherwise AV_PIX_FMT_NONE
+ */
+enum AVPixelFormat av_pix_fmt_swap_endianness(enum AVPixelFormat pix_fmt);
+
+#define FF_LOSS_RESOLUTION  0x0001 /**< loss due to resolution change */
+#define FF_LOSS_DEPTH       0x0002 /**< loss due to color depth change */
+#define FF_LOSS_COLORSPACE  0x0004 /**< loss due to color space conversion */
+#define FF_LOSS_ALPHA       0x0008 /**< loss of alpha bits */
+#define FF_LOSS_COLORQUANT  0x0010 /**< loss due to color quantization */
+#define FF_LOSS_CHROMA      0x0020 /**< loss of chroma (e.g. RGB to gray conversion) */
+
+/**
+ * Compute what kind of losses will occur when converting from one specific
+ * pixel format to another.
+ * When converting from one pixel format to another, information loss may occur.
+ * For example, when converting from RGB24 to GRAY, the color information will
+ * be lost. Similarly, other losses occur when converting from some formats to
+ * other formats. These losses can involve loss of chroma, but also loss of
+ * resolution, loss of color depth, loss due to the color space conversion, loss
+ * of the alpha bits or loss due to color quantization.
+ * av_get_fix_fmt_loss() informs you about the various types of losses
+ * which will occur when converting from one pixel format to another.
+ *
+ * @param[in] dst_pix_fmt destination pixel format
+ * @param[in] src_pix_fmt source pixel format
+ * @param[in] has_alpha Whether the source pixel format alpha channel is used.
+ * @return Combination of flags informing you what kind of losses will occur
+ * (maximum loss for an invalid dst_pix_fmt).
+ */
+int av_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt,
+                        enum AVPixelFormat src_pix_fmt,
+                        int has_alpha);
+
+/**
+ * Compute what kind of losses will occur when converting from one specific
+ * pixel format to another.
+ * When converting from one pixel format to another, information loss may occur.
+ * For example, when converting from RGB24 to GRAY, the color information will
+ * be lost. Similarly, other losses occur when converting from some formats to
+ * other formats. These losses can involve loss of chroma, but also loss of
+ * resolution, loss of color depth, loss due to the color space conversion, loss
+ * of the alpha bits or loss due to color quantization.
+ * av_get_fix_fmt_loss() informs you about the various types of losses
+ * which will occur when converting from one pixel format to another.
+ *
+ * @param[in] dst_pix_fmt destination pixel format
+ * @param[in] src_pix_fmt source pixel format
+ * @param[in] has_alpha Whether the source pixel format alpha channel is used.
+ * @return Combination of flags informing you what kind of losses will occur
+ * (maximum loss for an invalid dst_pix_fmt).
+ */
+enum AVPixelFormat av_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
+                                             enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
+
+#endif /* AVUTIL_PIXDESC_H */
diff --git a/media/ffvpx/libavutil/pixelutils.c b/media/ffvpx/libavutil/pixelutils.c
new file mode 100644
index 0000000000..ebee3d6f90
--- /dev/null
+++ b/media/ffvpx/libavutil/pixelutils.c
@@ -0,0 +1,89 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "common.h"
+#include "pixelutils.h"
+#include "internal.h"
+
+#if CONFIG_PIXELUTILS
+
+#include "x86/pixelutils.h"
+
+static av_always_inline int sad_wxh(const uint8_t *src1, ptrdiff_t stride1,
+                                    const uint8_t *src2, ptrdiff_t stride2,
+                                    int w, int h)
+{
+    int x, y, sum = 0;
+
+    for (y = 0; y < h; y++) {
+        for (x = 0; x < w; x++)
+            sum += abs(src1[x] - src2[x]);
+        src1 += stride1;
+        src2 += stride2;
+    }
+    return sum;
+}
+
+#define DECLARE_BLOCK_FUNCTIONS(size)                                               \
+static int block_sad_##size##x##size##_c(const uint8_t *src1, ptrdiff_t stride1,    \
+                                         const uint8_t *src2, ptrdiff_t stride2)    \
+{                                                                                   \
+    return sad_wxh(src1, stride1, src2, stride2, size, size);                       \
+}
+
+DECLARE_BLOCK_FUNCTIONS(2)
+DECLARE_BLOCK_FUNCTIONS(4)
+DECLARE_BLOCK_FUNCTIONS(8)
+DECLARE_BLOCK_FUNCTIONS(16)
+DECLARE_BLOCK_FUNCTIONS(32)
+
+static const av_pixelutils_sad_fn sad_c[] = {
+    block_sad_2x2_c,
+    block_sad_4x4_c,
+    block_sad_8x8_c,
+    block_sad_16x16_c,
+    block_sad_32x32_c,
+};
+
+#endif /* CONFIG_PIXELUTILS */
+
+av_pixelutils_sad_fn av_pixelutils_get_sad_fn(int w_bits, int h_bits, int aligned, void *log_ctx)
+{
+#if !CONFIG_PIXELUTILS
+    av_log(log_ctx, AV_LOG_ERROR, "pixelutils support is required "
+           "but libavutil is not compiled with it\n");
+    return NULL;
+#else
+    av_pixelutils_sad_fn sad[FF_ARRAY_ELEMS(sad_c)];
+
+    memcpy(sad, sad_c, sizeof(sad));
+
+    if (w_bits < 1 || w_bits > FF_ARRAY_ELEMS(sad) ||
+        h_bits < 1 || h_bits > FF_ARRAY_ELEMS(sad))
+        return NULL;
+    if (w_bits != h_bits) // only squared sad for now
+        return NULL;
+
+#if ARCH_X86
+    ff_pixelutils_sad_init_x86(sad, aligned);
+#endif
+
+    return sad[w_bits - 1];
+#endif
+}
diff --git a/media/ffvpx/libavutil/pixelutils.h b/media/ffvpx/libavutil/pixelutils.h
new file mode 100644
index 0000000000..a8dbc157e1
--- /dev/null
+++ b/media/ffvpx/libavutil/pixelutils.h
@@ -0,0 +1,52 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_PIXELUTILS_H
+#define AVUTIL_PIXELUTILS_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include "common.h"
+
+/**
+ * Sum of abs(src1[x] - src2[x])
+ */
+typedef int (*av_pixelutils_sad_fn)(const uint8_t *src1, ptrdiff_t stride1,
+                                    const uint8_t *src2, ptrdiff_t stride2);
+
+/**
+ * Get a potentially optimized pointer to a Sum-of-absolute-differences
+ * function (see the av_pixelutils_sad_fn prototype).
+ *
+ * @param w_bits  1<<w_bits is the requested width of the block size
+ * @param h_bits  1<<h_bits is the requested height of the block size
+ * @param aligned If set to 2, the returned sad function will assume src1 and
+ *                src2 addresses are aligned on the block size.
+ *                If set to 1, the returned sad function will assume src1 is
+ *                aligned on the block size.
+ *                If set to 0, the returned sad function assume no particular
+ *                alignment.
+ * @param log_ctx context used for logging, can be NULL
+ *
+ * @return a pointer to the SAD function or NULL in case of error (because of
+ *         invalid parameters)
+ */
+av_pixelutils_sad_fn av_pixelutils_get_sad_fn(int w_bits, int h_bits,
+                                              int aligned, void *log_ctx);
+
+#endif /* AVUTIL_PIXELUTILS_H */
diff --git a/media/ffvpx/libavutil/pixfmt.h b/media/ffvpx/libavutil/pixfmt.h
new file mode 100644
index 0000000000..8b54c9415b
--- /dev/null
+++ b/media/ffvpx/libavutil/pixfmt.h
@@ -0,0 +1,552 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_PIXFMT_H
+#define AVUTIL_PIXFMT_H
+
+/**
+ * @file
+ * pixel format definitions
+ */
+
+#include "libavutil/avconfig.h"
+#include "version.h"
+
+#define AVPALETTE_SIZE 1024
+#define AVPALETTE_COUNT 256
+
+/**
+ * Pixel format.
+ *
+ * @note
+ * AV_PIX_FMT_RGB32 is handled in an endian-specific manner. An RGBA
+ * color is put together as:
+ *  (A << 24) | (R << 16) | (G << 8) | B
+ * This is stored as BGRA on little-endian CPU architectures and ARGB on
+ * big-endian CPUs.
+ *
+ * @note
+ * If the resolution is not a multiple of the chroma subsampling factor
+ * then the chroma plane resolution must be rounded up.
+ *
+ * @par
+ * When the pixel format is palettized RGB32 (AV_PIX_FMT_PAL8), the palettized
+ * image data is stored in AVFrame.data[0]. The palette is transported in
+ * AVFrame.data[1], is 1024 bytes long (256 4-byte entries) and is
+ * formatted the same as in AV_PIX_FMT_RGB32 described above (i.e., it is
+ * also endian-specific). Note also that the individual RGB32 palette
+ * components stored in AVFrame.data[1] should be in the range 0..255.
+ * This is important as many custom PAL8 video codecs that were designed
+ * to run on the IBM VGA graphics adapter use 6-bit palette components.
+ *
+ * @par
+ * For all the 8 bits per pixel formats, an RGB32 palette is in data[1] like
+ * for pal8. This palette is filled in automatically by the function
+ * allocating the picture.
+ */
+enum AVPixelFormat {
+    AV_PIX_FMT_NONE = -1,
+    AV_PIX_FMT_YUV420P,   ///< planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
+    AV_PIX_FMT_YUYV422,   ///< packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
+    AV_PIX_FMT_RGB24,     ///< packed RGB 8:8:8, 24bpp, RGBRGB...
+    AV_PIX_FMT_BGR24,     ///< packed RGB 8:8:8, 24bpp, BGRBGR...
+    AV_PIX_FMT_YUV422P,   ///< planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
+    AV_PIX_FMT_YUV444P,   ///< planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
+    AV_PIX_FMT_YUV410P,   ///< planar YUV 4:1:0,  9bpp, (1 Cr & Cb sample per 4x4 Y samples)
+    AV_PIX_FMT_YUV411P,   ///< planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
+    AV_PIX_FMT_GRAY8,     ///<        Y        ,  8bpp
+    AV_PIX_FMT_MONOWHITE, ///<        Y        ,  1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb
+    AV_PIX_FMT_MONOBLACK, ///<        Y        ,  1bpp, 0 is black, 1 is white, in each byte pixels are ordered from the msb to the lsb
+    AV_PIX_FMT_PAL8,      ///< 8 bits with AV_PIX_FMT_RGB32 palette
+    AV_PIX_FMT_YUVJ420P,  ///< planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting color_range
+    AV_PIX_FMT_YUVJ422P,  ///< planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting color_range
+    AV_PIX_FMT_YUVJ444P,  ///< planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting color_range
+    AV_PIX_FMT_UYVY422,   ///< packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
+    AV_PIX_FMT_UYYVYY411, ///< packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
+    AV_PIX_FMT_BGR8,      ///< packed RGB 3:3:2,  8bpp, (msb)2B 3G 3R(lsb)
+    AV_PIX_FMT_BGR4,      ///< packed RGB 1:2:1 bitstream,  4bpp, (msb)1B 2G 1R(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits
+    AV_PIX_FMT_BGR4_BYTE, ///< packed RGB 1:2:1,  8bpp, (msb)1B 2G 1R(lsb)
+    AV_PIX_FMT_RGB8,      ///< packed RGB 3:3:2,  8bpp, (msb)2R 3G 3B(lsb)
+    AV_PIX_FMT_RGB4,      ///< packed RGB 1:2:1 bitstream,  4bpp, (msb)1R 2G 1B(lsb), a byte contains two pixels, the first pixel in the byte is the one composed by the 4 msb bits
+    AV_PIX_FMT_RGB4_BYTE, ///< packed RGB 1:2:1,  8bpp, (msb)1R 2G 1B(lsb)
+    AV_PIX_FMT_NV12,      ///< planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (first byte U and the following byte V)
+    AV_PIX_FMT_NV21,      ///< as above, but U and V bytes are swapped
+
+    AV_PIX_FMT_ARGB,      ///< packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
+    AV_PIX_FMT_RGBA,      ///< packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
+    AV_PIX_FMT_ABGR,      ///< packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
+    AV_PIX_FMT_BGRA,      ///< packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
+
+    AV_PIX_FMT_GRAY16BE,  ///<        Y        , 16bpp, big-endian
+    AV_PIX_FMT_GRAY16LE,  ///<        Y        , 16bpp, little-endian
+    AV_PIX_FMT_YUV440P,   ///< planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
+    AV_PIX_FMT_YUVJ440P,  ///< planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
+    AV_PIX_FMT_YUVA420P,  ///< planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
+    AV_PIX_FMT_RGB48BE,   ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big-endian
+    AV_PIX_FMT_RGB48LE,   ///< packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as little-endian
+
+    AV_PIX_FMT_RGB565BE,  ///< packed RGB 5:6:5, 16bpp, (msb)   5R 6G 5B(lsb), big-endian
+    AV_PIX_FMT_RGB565LE,  ///< packed RGB 5:6:5, 16bpp, (msb)   5R 6G 5B(lsb), little-endian
+    AV_PIX_FMT_RGB555BE,  ///< packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), big-endian   , X=unused/undefined
+    AV_PIX_FMT_RGB555LE,  ///< packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined
+
+    AV_PIX_FMT_BGR565BE,  ///< packed BGR 5:6:5, 16bpp, (msb)   5B 6G 5R(lsb), big-endian
+    AV_PIX_FMT_BGR565LE,  ///< packed BGR 5:6:5, 16bpp, (msb)   5B 6G 5R(lsb), little-endian
+    AV_PIX_FMT_BGR555BE,  ///< packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), big-endian   , X=unused/undefined
+    AV_PIX_FMT_BGR555LE,  ///< packed BGR 5:5:5, 16bpp, (msb)1X 5B 5G 5R(lsb), little-endian, X=unused/undefined
+
+#if FF_API_VAAPI
+    /** @name Deprecated pixel formats */
+    /**@{*/
+    AV_PIX_FMT_VAAPI_MOCO, ///< HW acceleration through VA API at motion compensation entry-point, Picture.data[3] contains a vaapi_render_state struct which contains macroblocks as well as various fields extracted from headers
+    AV_PIX_FMT_VAAPI_IDCT, ///< HW acceleration through VA API at IDCT entry-point, Picture.data[3] contains a vaapi_render_state struct which contains fields extracted from headers
+    AV_PIX_FMT_VAAPI_VLD,  ///< HW decoding through VA API, Picture.data[3] contains a VASurfaceID
+    /**@}*/
+    AV_PIX_FMT_VAAPI = AV_PIX_FMT_VAAPI_VLD,
+#else
+    /**
+     *  Hardware acceleration through VA-API, data[3] contains a
+     *  VASurfaceID.
+     */
+    AV_PIX_FMT_VAAPI,
+#endif
+
+    AV_PIX_FMT_YUV420P16LE,  ///< planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
+    AV_PIX_FMT_YUV420P16BE,  ///< planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
+    AV_PIX_FMT_YUV422P16LE,  ///< planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
+    AV_PIX_FMT_YUV422P16BE,  ///< planar YUV 4:2:2, 32bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
+    AV_PIX_FMT_YUV444P16LE,  ///< planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
+    AV_PIX_FMT_YUV444P16BE,  ///< planar YUV 4:4:4, 48bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
+    AV_PIX_FMT_DXVA2_VLD,    ///< HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer
+
+    AV_PIX_FMT_RGB444LE,  ///< packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), little-endian, X=unused/undefined
+    AV_PIX_FMT_RGB444BE,  ///< packed RGB 4:4:4, 16bpp, (msb)4X 4R 4G 4B(lsb), big-endian,    X=unused/undefined
+    AV_PIX_FMT_BGR444LE,  ///< packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), little-endian, X=unused/undefined
+    AV_PIX_FMT_BGR444BE,  ///< packed BGR 4:4:4, 16bpp, (msb)4X 4B 4G 4R(lsb), big-endian,    X=unused/undefined
+    AV_PIX_FMT_YA8,       ///< 8 bits gray, 8 bits alpha
+
+    AV_PIX_FMT_Y400A = AV_PIX_FMT_YA8, ///< alias for AV_PIX_FMT_YA8
+    AV_PIX_FMT_GRAY8A= AV_PIX_FMT_YA8, ///< alias for AV_PIX_FMT_YA8
+
+    AV_PIX_FMT_BGR48BE,   ///< packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as big-endian
+    AV_PIX_FMT_BGR48LE,   ///< packed RGB 16:16:16, 48bpp, 16B, 16G, 16R, the 2-byte value for each R/G/B component is stored as little-endian
+
+    /**
+     * The following 12 formats have the disadvantage of needing 1 format for each bit depth.
+     * Notice that each 9/10 bits sample is stored in 16 bits with extra padding.
+     * If you want to support multiple bit depths, then using AV_PIX_FMT_YUV420P16* with the bpp stored separately is better.
+     */
+    AV_PIX_FMT_YUV420P9BE, ///< planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
+    AV_PIX_FMT_YUV420P9LE, ///< planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
+    AV_PIX_FMT_YUV420P10BE,///< planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
+    AV_PIX_FMT_YUV420P10LE,///< planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
+    AV_PIX_FMT_YUV422P10BE,///< planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
+    AV_PIX_FMT_YUV422P10LE,///< planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
+    AV_PIX_FMT_YUV444P9BE, ///< planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
+    AV_PIX_FMT_YUV444P9LE, ///< planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
+    AV_PIX_FMT_YUV444P10BE,///< planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
+    AV_PIX_FMT_YUV444P10LE,///< planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
+    AV_PIX_FMT_YUV422P9BE, ///< planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
+    AV_PIX_FMT_YUV422P9LE, ///< planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
+    AV_PIX_FMT_GBRP,      ///< planar GBR 4:4:4 24bpp
+    AV_PIX_FMT_GBR24P = AV_PIX_FMT_GBRP, // alias for #AV_PIX_FMT_GBRP
+    AV_PIX_FMT_GBRP9BE,   ///< planar GBR 4:4:4 27bpp, big-endian
+    AV_PIX_FMT_GBRP9LE,   ///< planar GBR 4:4:4 27bpp, little-endian
+    AV_PIX_FMT_GBRP10BE,  ///< planar GBR 4:4:4 30bpp, big-endian
+    AV_PIX_FMT_GBRP10LE,  ///< planar GBR 4:4:4 30bpp, little-endian
+    AV_PIX_FMT_GBRP16BE,  ///< planar GBR 4:4:4 48bpp, big-endian
+    AV_PIX_FMT_GBRP16LE,  ///< planar GBR 4:4:4 48bpp, little-endian
+    AV_PIX_FMT_YUVA422P,  ///< planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
+    AV_PIX_FMT_YUVA444P,  ///< planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
+    AV_PIX_FMT_YUVA420P9BE,  ///< planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), big-endian
+    AV_PIX_FMT_YUVA420P9LE,  ///< planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian
+    AV_PIX_FMT_YUVA422P9BE,  ///< planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), big-endian
+    AV_PIX_FMT_YUVA422P9LE,  ///< planar YUV 4:2:2 27bpp, (1 Cr & Cb sample per 2x1 Y & A samples), little-endian
+    AV_PIX_FMT_YUVA444P9BE,  ///< planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), big-endian
+    AV_PIX_FMT_YUVA444P9LE,  ///< planar YUV 4:4:4 36bpp, (1 Cr & Cb sample per 1x1 Y & A samples), little-endian
+    AV_PIX_FMT_YUVA420P10BE, ///< planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
+    AV_PIX_FMT_YUVA420P10LE, ///< planar YUV 4:2:0 25bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
+    AV_PIX_FMT_YUVA422P10BE, ///< planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, big-endian)
+    AV_PIX_FMT_YUVA422P10LE, ///< planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
+    AV_PIX_FMT_YUVA444P10BE, ///< planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
+    AV_PIX_FMT_YUVA444P10LE, ///< planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
+    AV_PIX_FMT_YUVA420P16BE, ///< planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
+    AV_PIX_FMT_YUVA420P16LE, ///< planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
+    AV_PIX_FMT_YUVA422P16BE, ///< planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, big-endian)
+    AV_PIX_FMT_YUVA422P16LE, ///< planar YUV 4:2:2 48bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
+    AV_PIX_FMT_YUVA444P16BE, ///< planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
+    AV_PIX_FMT_YUVA444P16LE, ///< planar YUV 4:4:4 64bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
+
+    AV_PIX_FMT_VDPAU,     ///< HW acceleration through VDPAU, Picture.data[3] contains a VdpVideoSurface
+
+    AV_PIX_FMT_XYZ12LE,      ///< packed XYZ 4:4:4, 36 bpp, (msb) 12X, 12Y, 12Z (lsb), the 2-byte value for each X/Y/Z is stored as little-endian, the 4 lower bits are set to 0
+    AV_PIX_FMT_XYZ12BE,      ///< packed XYZ 4:4:4, 36 bpp, (msb) 12X, 12Y, 12Z (lsb), the 2-byte value for each X/Y/Z is stored as big-endian, the 4 lower bits are set to 0
+    AV_PIX_FMT_NV16,         ///< interleaved chroma YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
+    AV_PIX_FMT_NV20LE,       ///< interleaved chroma YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
+    AV_PIX_FMT_NV20BE,       ///< interleaved chroma YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
+
+    AV_PIX_FMT_RGBA64BE,     ///< packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is stored as big-endian
+    AV_PIX_FMT_RGBA64LE,     ///< packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is stored as little-endian
+    AV_PIX_FMT_BGRA64BE,     ///< packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is stored as big-endian
+    AV_PIX_FMT_BGRA64LE,     ///< packed RGBA 16:16:16:16, 64bpp, 16B, 16G, 16R, 16A, the 2-byte value for each R/G/B/A component is stored as little-endian
+
+    AV_PIX_FMT_YVYU422,   ///< packed YUV 4:2:2, 16bpp, Y0 Cr Y1 Cb
+
+    AV_PIX_FMT_YA16BE,       ///< 16 bits gray, 16 bits alpha (big-endian)
+    AV_PIX_FMT_YA16LE,       ///< 16 bits gray, 16 bits alpha (little-endian)
+
+    AV_PIX_FMT_GBRAP,        ///< planar GBRA 4:4:4:4 32bpp
+    AV_PIX_FMT_GBRAP16BE,    ///< planar GBRA 4:4:4:4 64bpp, big-endian
+    AV_PIX_FMT_GBRAP16LE,    ///< planar GBRA 4:4:4:4 64bpp, little-endian
+    /**
+     *  HW acceleration through QSV, data[3] contains a pointer to the
+     *  mfxFrameSurface1 structure.
+     */
+    AV_PIX_FMT_QSV,
+    /**
+     * HW acceleration though MMAL, data[3] contains a pointer to the
+     * MMAL_BUFFER_HEADER_T structure.
+     */
+    AV_PIX_FMT_MMAL,
+
+    AV_PIX_FMT_D3D11VA_VLD,  ///< HW decoding through Direct3D11 via old API, Picture.data[3] contains a ID3D11VideoDecoderOutputView pointer
+
+    /**
+     * HW acceleration through CUDA. data[i] contain CUdeviceptr pointers
+     * exactly as for system memory frames.
+     */
+    AV_PIX_FMT_CUDA,
+
+    AV_PIX_FMT_0RGB,        ///< packed RGB 8:8:8, 32bpp, XRGBXRGB...   X=unused/undefined
+    AV_PIX_FMT_RGB0,        ///< packed RGB 8:8:8, 32bpp, RGBXRGBX...   X=unused/undefined
+    AV_PIX_FMT_0BGR,        ///< packed BGR 8:8:8, 32bpp, XBGRXBGR...   X=unused/undefined
+    AV_PIX_FMT_BGR0,        ///< packed BGR 8:8:8, 32bpp, BGRXBGRX...   X=unused/undefined
+
+    AV_PIX_FMT_YUV420P12BE, ///< planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
+    AV_PIX_FMT_YUV420P12LE, ///< planar YUV 4:2:0,18bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
+    AV_PIX_FMT_YUV420P14BE, ///< planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
+    AV_PIX_FMT_YUV420P14LE, ///< planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
+    AV_PIX_FMT_YUV422P12BE, ///< planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
+    AV_PIX_FMT_YUV422P12LE, ///< planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
+    AV_PIX_FMT_YUV422P14BE, ///< planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
+    AV_PIX_FMT_YUV422P14LE, ///< planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
+    AV_PIX_FMT_YUV444P12BE, ///< planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
+    AV_PIX_FMT_YUV444P12LE, ///< planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
+    AV_PIX_FMT_YUV444P14BE, ///< planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
+    AV_PIX_FMT_YUV444P14LE, ///< planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
+    AV_PIX_FMT_GBRP12BE,    ///< planar GBR 4:4:4 36bpp, big-endian
+    AV_PIX_FMT_GBRP12LE,    ///< planar GBR 4:4:4 36bpp, little-endian
+    AV_PIX_FMT_GBRP14BE,    ///< planar GBR 4:4:4 42bpp, big-endian
+    AV_PIX_FMT_GBRP14LE,    ///< planar GBR 4:4:4 42bpp, little-endian
+    AV_PIX_FMT_YUVJ411P,    ///< planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV411P and setting color_range
+
+    AV_PIX_FMT_BAYER_BGGR8,    ///< bayer, BGBG..(odd line), GRGR..(even line), 8-bit samples */
+    AV_PIX_FMT_BAYER_RGGB8,    ///< bayer, RGRG..(odd line), GBGB..(even line), 8-bit samples */
+    AV_PIX_FMT_BAYER_GBRG8,    ///< bayer, GBGB..(odd line), RGRG..(even line), 8-bit samples */
+    AV_PIX_FMT_BAYER_GRBG8,    ///< bayer, GRGR..(odd line), BGBG..(even line), 8-bit samples */
+    AV_PIX_FMT_BAYER_BGGR16LE, ///< bayer, BGBG..(odd line), GRGR..(even line), 16-bit samples, little-endian */
+    AV_PIX_FMT_BAYER_BGGR16BE, ///< bayer, BGBG..(odd line), GRGR..(even line), 16-bit samples, big-endian */
+    AV_PIX_FMT_BAYER_RGGB16LE, ///< bayer, RGRG..(odd line), GBGB..(even line), 16-bit samples, little-endian */
+    AV_PIX_FMT_BAYER_RGGB16BE, ///< bayer, RGRG..(odd line), GBGB..(even line), 16-bit samples, big-endian */
+    AV_PIX_FMT_BAYER_GBRG16LE, ///< bayer, GBGB..(odd line), RGRG..(even line), 16-bit samples, little-endian */
+    AV_PIX_FMT_BAYER_GBRG16BE, ///< bayer, GBGB..(odd line), RGRG..(even line), 16-bit samples, big-endian */
+    AV_PIX_FMT_BAYER_GRBG16LE, ///< bayer, GRGR..(odd line), BGBG..(even line), 16-bit samples, little-endian */
+    AV_PIX_FMT_BAYER_GRBG16BE, ///< bayer, GRGR..(odd line), BGBG..(even line), 16-bit samples, big-endian */
+
+    AV_PIX_FMT_XVMC,///< XVideo Motion Acceleration via common packet passing
+
+    AV_PIX_FMT_YUV440P10LE, ///< planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
+    AV_PIX_FMT_YUV440P10BE, ///< planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), big-endian
+    AV_PIX_FMT_YUV440P12LE, ///< planar YUV 4:4:0,24bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
+    AV_PIX_FMT_YUV440P12BE, ///< planar YUV 4:4:0,24bpp, (1 Cr & Cb sample per 1x2 Y samples), big-endian
+    AV_PIX_FMT_AYUV64LE,    ///< packed AYUV 4:4:4,64bpp (1 Cr & Cb sample per 1x1 Y & A samples), little-endian
+    AV_PIX_FMT_AYUV64BE,    ///< packed AYUV 4:4:4,64bpp (1 Cr & Cb sample per 1x1 Y & A samples), big-endian
+
+    AV_PIX_FMT_VIDEOTOOLBOX, ///< hardware decoding through Videotoolbox
+
+    AV_PIX_FMT_P010LE, ///< like NV12, with 10bpp per component, data in the high bits, zeros in the low bits, little-endian
+    AV_PIX_FMT_P010BE, ///< like NV12, with 10bpp per component, data in the high bits, zeros in the low bits, big-endian
+
+    AV_PIX_FMT_GBRAP12BE,  ///< planar GBR 4:4:4:4 48bpp, big-endian
+    AV_PIX_FMT_GBRAP12LE,  ///< planar GBR 4:4:4:4 48bpp, little-endian
+
+    AV_PIX_FMT_GBRAP10BE,  ///< planar GBR 4:4:4:4 40bpp, big-endian
+    AV_PIX_FMT_GBRAP10LE,  ///< planar GBR 4:4:4:4 40bpp, little-endian
+
+    AV_PIX_FMT_MEDIACODEC, ///< hardware decoding through MediaCodec
+
+    AV_PIX_FMT_GRAY12BE,   ///<        Y        , 12bpp, big-endian
+    AV_PIX_FMT_GRAY12LE,   ///<        Y        , 12bpp, little-endian
+    AV_PIX_FMT_GRAY10BE,   ///<        Y        , 10bpp, big-endian
+    AV_PIX_FMT_GRAY10LE,   ///<        Y        , 10bpp, little-endian
+
+    AV_PIX_FMT_P016LE, ///< like NV12, with 16bpp per component, little-endian
+    AV_PIX_FMT_P016BE, ///< like NV12, with 16bpp per component, big-endian
+
+    /**
+     * Hardware surfaces for Direct3D11.
+     *
+     * This is preferred over the legacy AV_PIX_FMT_D3D11VA_VLD. The new D3D11
+     * hwaccel API and filtering support AV_PIX_FMT_D3D11 only.
+     *
+     * data[0] contains a ID3D11Texture2D pointer, and data[1] contains the
+     * texture array index of the frame as intptr_t if the ID3D11Texture2D is
+     * an array texture (or always 0 if it's a normal texture).
+     */
+    AV_PIX_FMT_D3D11,
+
+    AV_PIX_FMT_GRAY9BE,   ///<        Y        , 9bpp, big-endian
+    AV_PIX_FMT_GRAY9LE,   ///<        Y        , 9bpp, little-endian
+
+    AV_PIX_FMT_GBRPF32BE,  ///< IEEE-754 single precision planar GBR 4:4:4,     96bpp, big-endian
+    AV_PIX_FMT_GBRPF32LE,  ///< IEEE-754 single precision planar GBR 4:4:4,     96bpp, little-endian
+    AV_PIX_FMT_GBRAPF32BE, ///< IEEE-754 single precision planar GBRA 4:4:4:4, 128bpp, big-endian
+    AV_PIX_FMT_GBRAPF32LE, ///< IEEE-754 single precision planar GBRA 4:4:4:4, 128bpp, little-endian
+
+    /**
+     * DRM-managed buffers exposed through PRIME buffer sharing.
+     *
+     * data[0] points to an AVDRMFrameDescriptor.
+     */
+    AV_PIX_FMT_DRM_PRIME,
+    /**
+     * Hardware surfaces for OpenCL.
+     *
+     * data[i] contain 2D image objects (typed in C as cl_mem, used
+     * in OpenCL as image2d_t) for each plane of the surface.
+     */
+    AV_PIX_FMT_OPENCL,
+
+    AV_PIX_FMT_GRAY14BE,   ///<        Y        , 14bpp, big-endian
+    AV_PIX_FMT_GRAY14LE,   ///<        Y        , 14bpp, little-endian
+
+    AV_PIX_FMT_GRAYF32BE,  ///< IEEE-754 single precision Y, 32bpp, big-endian
+    AV_PIX_FMT_GRAYF32LE,  ///< IEEE-754 single precision Y, 32bpp, little-endian
+
+    AV_PIX_FMT_YUVA422P12BE, ///< planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), 12b alpha, big-endian
+    AV_PIX_FMT_YUVA422P12LE, ///< planar YUV 4:2:2,24bpp, (1 Cr & Cb sample per 2x1 Y samples), 12b alpha, little-endian
+    AV_PIX_FMT_YUVA444P12BE, ///< planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), 12b alpha, big-endian
+    AV_PIX_FMT_YUVA444P12LE, ///< planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), 12b alpha, little-endian
+
+    AV_PIX_FMT_NV24,      ///< planar YUV 4:4:4, 24bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (first byte U and the following byte V)
+    AV_PIX_FMT_NV42,      ///< as above, but U and V bytes are swapped
+
+    AV_PIX_FMT_NB         ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
+};
+
+#if AV_HAVE_BIGENDIAN
+#   define AV_PIX_FMT_NE(be, le) AV_PIX_FMT_##be
+#else
+#   define AV_PIX_FMT_NE(be, le) AV_PIX_FMT_##le
+#endif
+
+#define AV_PIX_FMT_RGB32   AV_PIX_FMT_NE(ARGB, BGRA)
+#define AV_PIX_FMT_RGB32_1 AV_PIX_FMT_NE(RGBA, ABGR)
+#define AV_PIX_FMT_BGR32   AV_PIX_FMT_NE(ABGR, RGBA)
+#define AV_PIX_FMT_BGR32_1 AV_PIX_FMT_NE(BGRA, ARGB)
+#define AV_PIX_FMT_0RGB32  AV_PIX_FMT_NE(0RGB, BGR0)
+#define AV_PIX_FMT_0BGR32  AV_PIX_FMT_NE(0BGR, RGB0)
+
+#define AV_PIX_FMT_GRAY9  AV_PIX_FMT_NE(GRAY9BE,  GRAY9LE)
+#define AV_PIX_FMT_GRAY10 AV_PIX_FMT_NE(GRAY10BE, GRAY10LE)
+#define AV_PIX_FMT_GRAY12 AV_PIX_FMT_NE(GRAY12BE, GRAY12LE)
+#define AV_PIX_FMT_GRAY14 AV_PIX_FMT_NE(GRAY14BE, GRAY14LE)
+#define AV_PIX_FMT_GRAY16 AV_PIX_FMT_NE(GRAY16BE, GRAY16LE)
+#define AV_PIX_FMT_YA16   AV_PIX_FMT_NE(YA16BE,   YA16LE)
+#define AV_PIX_FMT_RGB48  AV_PIX_FMT_NE(RGB48BE,  RGB48LE)
+#define AV_PIX_FMT_RGB565 AV_PIX_FMT_NE(RGB565BE, RGB565LE)
+#define AV_PIX_FMT_RGB555 AV_PIX_FMT_NE(RGB555BE, RGB555LE)
+#define AV_PIX_FMT_RGB444 AV_PIX_FMT_NE(RGB444BE, RGB444LE)
+#define AV_PIX_FMT_RGBA64 AV_PIX_FMT_NE(RGBA64BE, RGBA64LE)
+#define AV_PIX_FMT_BGR48  AV_PIX_FMT_NE(BGR48BE,  BGR48LE)
+#define AV_PIX_FMT_BGR565 AV_PIX_FMT_NE(BGR565BE, BGR565LE)
+#define AV_PIX_FMT_BGR555 AV_PIX_FMT_NE(BGR555BE, BGR555LE)
+#define AV_PIX_FMT_BGR444 AV_PIX_FMT_NE(BGR444BE, BGR444LE)
+#define AV_PIX_FMT_BGRA64 AV_PIX_FMT_NE(BGRA64BE, BGRA64LE)
+
+#define AV_PIX_FMT_YUV420P9  AV_PIX_FMT_NE(YUV420P9BE , YUV420P9LE)
+#define AV_PIX_FMT_YUV422P9  AV_PIX_FMT_NE(YUV422P9BE , YUV422P9LE)
+#define AV_PIX_FMT_YUV444P9  AV_PIX_FMT_NE(YUV444P9BE , YUV444P9LE)
+#define AV_PIX_FMT_YUV420P10 AV_PIX_FMT_NE(YUV420P10BE, YUV420P10LE)
+#define AV_PIX_FMT_YUV422P10 AV_PIX_FMT_NE(YUV422P10BE, YUV422P10LE)
+#define AV_PIX_FMT_YUV440P10 AV_PIX_FMT_NE(YUV440P10BE, YUV440P10LE)
+#define AV_PIX_FMT_YUV444P10 AV_PIX_FMT_NE(YUV444P10BE, YUV444P10LE)
+#define AV_PIX_FMT_YUV420P12 AV_PIX_FMT_NE(YUV420P12BE, YUV420P12LE)
+#define AV_PIX_FMT_YUV422P12 AV_PIX_FMT_NE(YUV422P12BE, YUV422P12LE)
+#define AV_PIX_FMT_YUV440P12 AV_PIX_FMT_NE(YUV440P12BE, YUV440P12LE)
+#define AV_PIX_FMT_YUV444P12 AV_PIX_FMT_NE(YUV444P12BE, YUV444P12LE)
+#define AV_PIX_FMT_YUV420P14 AV_PIX_FMT_NE(YUV420P14BE, YUV420P14LE)
+#define AV_PIX_FMT_YUV422P14 AV_PIX_FMT_NE(YUV422P14BE, YUV422P14LE)
+#define AV_PIX_FMT_YUV444P14 AV_PIX_FMT_NE(YUV444P14BE, YUV444P14LE)
+#define AV_PIX_FMT_YUV420P16 AV_PIX_FMT_NE(YUV420P16BE, YUV420P16LE)
+#define AV_PIX_FMT_YUV422P16 AV_PIX_FMT_NE(YUV422P16BE, YUV422P16LE)
+#define AV_PIX_FMT_YUV444P16 AV_PIX_FMT_NE(YUV444P16BE, YUV444P16LE)
+
+#define AV_PIX_FMT_GBRP9     AV_PIX_FMT_NE(GBRP9BE ,    GBRP9LE)
+#define AV_PIX_FMT_GBRP10    AV_PIX_FMT_NE(GBRP10BE,    GBRP10LE)
+#define AV_PIX_FMT_GBRP12    AV_PIX_FMT_NE(GBRP12BE,    GBRP12LE)
+#define AV_PIX_FMT_GBRP14    AV_PIX_FMT_NE(GBRP14BE,    GBRP14LE)
+#define AV_PIX_FMT_GBRP16    AV_PIX_FMT_NE(GBRP16BE,    GBRP16LE)
+#define AV_PIX_FMT_GBRAP10   AV_PIX_FMT_NE(GBRAP10BE,   GBRAP10LE)
+#define AV_PIX_FMT_GBRAP12   AV_PIX_FMT_NE(GBRAP12BE,   GBRAP12LE)
+#define AV_PIX_FMT_GBRAP16   AV_PIX_FMT_NE(GBRAP16BE,   GBRAP16LE)
+
+#define AV_PIX_FMT_BAYER_BGGR16 AV_PIX_FMT_NE(BAYER_BGGR16BE,    BAYER_BGGR16LE)
+#define AV_PIX_FMT_BAYER_RGGB16 AV_PIX_FMT_NE(BAYER_RGGB16BE,    BAYER_RGGB16LE)
+#define AV_PIX_FMT_BAYER_GBRG16 AV_PIX_FMT_NE(BAYER_GBRG16BE,    BAYER_GBRG16LE)
+#define AV_PIX_FMT_BAYER_GRBG16 AV_PIX_FMT_NE(BAYER_GRBG16BE,    BAYER_GRBG16LE)
+
+#define AV_PIX_FMT_GBRPF32    AV_PIX_FMT_NE(GBRPF32BE,  GBRPF32LE)
+#define AV_PIX_FMT_GBRAPF32   AV_PIX_FMT_NE(GBRAPF32BE, GBRAPF32LE)
+
+#define AV_PIX_FMT_GRAYF32    AV_PIX_FMT_NE(GRAYF32BE, GRAYF32LE)
+
+#define AV_PIX_FMT_YUVA420P9  AV_PIX_FMT_NE(YUVA420P9BE , YUVA420P9LE)
+#define AV_PIX_FMT_YUVA422P9  AV_PIX_FMT_NE(YUVA422P9BE , YUVA422P9LE)
+#define AV_PIX_FMT_YUVA444P9  AV_PIX_FMT_NE(YUVA444P9BE , YUVA444P9LE)
+#define AV_PIX_FMT_YUVA420P10 AV_PIX_FMT_NE(YUVA420P10BE, YUVA420P10LE)
+#define AV_PIX_FMT_YUVA422P10 AV_PIX_FMT_NE(YUVA422P10BE, YUVA422P10LE)
+#define AV_PIX_FMT_YUVA444P10 AV_PIX_FMT_NE(YUVA444P10BE, YUVA444P10LE)
+#define AV_PIX_FMT_YUVA422P12 AV_PIX_FMT_NE(YUVA422P12BE, YUVA422P12LE)
+#define AV_PIX_FMT_YUVA444P12 AV_PIX_FMT_NE(YUVA444P12BE, YUVA444P12LE)
+#define AV_PIX_FMT_YUVA420P16 AV_PIX_FMT_NE(YUVA420P16BE, YUVA420P16LE)
+#define AV_PIX_FMT_YUVA422P16 AV_PIX_FMT_NE(YUVA422P16BE, YUVA422P16LE)
+#define AV_PIX_FMT_YUVA444P16 AV_PIX_FMT_NE(YUVA444P16BE, YUVA444P16LE)
+
+#define AV_PIX_FMT_XYZ12      AV_PIX_FMT_NE(XYZ12BE, XYZ12LE)
+#define AV_PIX_FMT_NV20       AV_PIX_FMT_NE(NV20BE,  NV20LE)
+#define AV_PIX_FMT_AYUV64     AV_PIX_FMT_NE(AYUV64BE, AYUV64LE)
+#define AV_PIX_FMT_P010       AV_PIX_FMT_NE(P010BE,  P010LE)
+#define AV_PIX_FMT_P016       AV_PIX_FMT_NE(P016BE,  P016LE)
+
+/**
+  * Chromaticity coordinates of the source primaries.
+  * These values match the ones defined by ISO/IEC 23001-8_2013 § 7.1.
+  */
+enum AVColorPrimaries {
+    AVCOL_PRI_RESERVED0   = 0,
+    AVCOL_PRI_BT709       = 1,  ///< also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
+    AVCOL_PRI_UNSPECIFIED = 2,
+    AVCOL_PRI_RESERVED    = 3,
+    AVCOL_PRI_BT470M      = 4,  ///< also FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
+
+    AVCOL_PRI_BT470BG     = 5,  ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM
+    AVCOL_PRI_SMPTE170M   = 6,  ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
+    AVCOL_PRI_SMPTE240M   = 7,  ///< functionally identical to above
+    AVCOL_PRI_FILM        = 8,  ///< colour filters using Illuminant C
+    AVCOL_PRI_BT2020      = 9,  ///< ITU-R BT2020
+    AVCOL_PRI_SMPTE428    = 10, ///< SMPTE ST 428-1 (CIE 1931 XYZ)
+    AVCOL_PRI_SMPTEST428_1 = AVCOL_PRI_SMPTE428,
+    AVCOL_PRI_SMPTE431    = 11, ///< SMPTE ST 431-2 (2011) / DCI P3
+    AVCOL_PRI_SMPTE432    = 12, ///< SMPTE ST 432-1 (2010) / P3 D65 / Display P3
+    AVCOL_PRI_JEDEC_P22   = 22, ///< JEDEC P22 phosphors
+    AVCOL_PRI_NB                ///< Not part of ABI
+};
+
+/**
+ * Color Transfer Characteristic.
+ * These values match the ones defined by ISO/IEC 23001-8_2013 § 7.2.
+ */
+enum AVColorTransferCharacteristic {
+    AVCOL_TRC_RESERVED0    = 0,
+    AVCOL_TRC_BT709        = 1,  ///< also ITU-R BT1361
+    AVCOL_TRC_UNSPECIFIED  = 2,
+    AVCOL_TRC_RESERVED     = 3,
+    AVCOL_TRC_GAMMA22      = 4,  ///< also ITU-R BT470M / ITU-R BT1700 625 PAL & SECAM
+    AVCOL_TRC_GAMMA28      = 5,  ///< also ITU-R BT470BG
+    AVCOL_TRC_SMPTE170M    = 6,  ///< also ITU-R BT601-6 525 or 625 / ITU-R BT1358 525 or 625 / ITU-R BT1700 NTSC
+    AVCOL_TRC_SMPTE240M    = 7,
+    AVCOL_TRC_LINEAR       = 8,  ///< "Linear transfer characteristics"
+    AVCOL_TRC_LOG          = 9,  ///< "Logarithmic transfer characteristic (100:1 range)"
+    AVCOL_TRC_LOG_SQRT     = 10, ///< "Logarithmic transfer characteristic (100 * Sqrt(10) : 1 range)"
+    AVCOL_TRC_IEC61966_2_4 = 11, ///< IEC 61966-2-4
+    AVCOL_TRC_BT1361_ECG   = 12, ///< ITU-R BT1361 Extended Colour Gamut
+    AVCOL_TRC_IEC61966_2_1 = 13, ///< IEC 61966-2-1 (sRGB or sYCC)
+    AVCOL_TRC_BT2020_10    = 14, ///< ITU-R BT2020 for 10-bit system
+    AVCOL_TRC_BT2020_12    = 15, ///< ITU-R BT2020 for 12-bit system
+    AVCOL_TRC_SMPTE2084    = 16, ///< SMPTE ST 2084 for 10-, 12-, 14- and 16-bit systems
+    AVCOL_TRC_SMPTEST2084  = AVCOL_TRC_SMPTE2084,
+    AVCOL_TRC_SMPTE428     = 17, ///< SMPTE ST 428-1
+    AVCOL_TRC_SMPTEST428_1 = AVCOL_TRC_SMPTE428,
+    AVCOL_TRC_ARIB_STD_B67 = 18, ///< ARIB STD-B67, known as "Hybrid log-gamma"
+    AVCOL_TRC_NB                 ///< Not part of ABI
+};
+
+/**
+ * YUV colorspace type.
+ * These values match the ones defined by ISO/IEC 23001-8_2013 § 7.3.
+ */
+enum AVColorSpace {
+    AVCOL_SPC_RGB         = 0,  ///< order of coefficients is actually GBR, also IEC 61966-2-1 (sRGB)
+    AVCOL_SPC_BT709       = 1,  ///< also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
+    AVCOL_SPC_UNSPECIFIED = 2,
+    AVCOL_SPC_RESERVED    = 3,
+    AVCOL_SPC_FCC         = 4,  ///< FCC Title 47 Code of Federal Regulations 73.682 (a)(20)
+    AVCOL_SPC_BT470BG     = 5,  ///< also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
+    AVCOL_SPC_SMPTE170M   = 6,  ///< also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
+    AVCOL_SPC_SMPTE240M   = 7,  ///< functionally identical to above
+    AVCOL_SPC_YCGCO       = 8,  ///< Used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16
+    AVCOL_SPC_YCOCG       = AVCOL_SPC_YCGCO,
+    AVCOL_SPC_BT2020_NCL  = 9,  ///< ITU-R BT2020 non-constant luminance system
+    AVCOL_SPC_BT2020_CL   = 10, ///< ITU-R BT2020 constant luminance system
+    AVCOL_SPC_SMPTE2085   = 11, ///< SMPTE 2085, Y'D'zD'x
+    AVCOL_SPC_CHROMA_DERIVED_NCL = 12, ///< Chromaticity-derived non-constant luminance system
+    AVCOL_SPC_CHROMA_DERIVED_CL = 13, ///< Chromaticity-derived constant luminance system
+    AVCOL_SPC_ICTCP       = 14, ///< ITU-R BT.2100-0, ICtCp
+    AVCOL_SPC_NB                ///< Not part of ABI
+};
+
+/**
+ * MPEG vs JPEG YUV range.
+ */
+enum AVColorRange {
+    AVCOL_RANGE_UNSPECIFIED = 0,
+    AVCOL_RANGE_MPEG        = 1, ///< the normal 219*2^(n-8) "MPEG" YUV ranges
+    AVCOL_RANGE_JPEG        = 2, ///< the normal     2^n-1   "JPEG" YUV ranges
+    AVCOL_RANGE_NB               ///< Not part of ABI
+};
+
+/**
+ * Location of chroma samples.
+ *
+ * Illustration showing the location of the first (top left) chroma sample of the
+ * image, the left shows only luma, the right
+ * shows the location of the chroma sample, the 2 could be imagined to overlay
+ * each other but are drawn separately due to limitations of ASCII
+ *
+ *                1st 2nd       1st 2nd horizontal luma sample positions
+ *                 v   v         v   v
+ *                 ______        ______
+ *1st luma line > |X   X ...    |3 4 X ...     X are luma samples,
+ *                |             |1 2           1-6 are possible chroma positions
+ *2nd luma line > |X   X ...    |5 6 X ...     0 is undefined/unknown position
+ */
+enum AVChromaLocation {
+    AVCHROMA_LOC_UNSPECIFIED = 0,
+    AVCHROMA_LOC_LEFT        = 1, ///< MPEG-2/4 4:2:0, H.264 default for 4:2:0
+    AVCHROMA_LOC_CENTER      = 2, ///< MPEG-1 4:2:0, JPEG 4:2:0, H.263 4:2:0
+    AVCHROMA_LOC_TOPLEFT     = 3, ///< ITU-R 601, SMPTE 274M 296M S314M(DV 4:1:1), mpeg2 4:2:2
+    AVCHROMA_LOC_TOP         = 4,
+    AVCHROMA_LOC_BOTTOMLEFT  = 5,
+    AVCHROMA_LOC_BOTTOM      = 6,
+    AVCHROMA_LOC_NB               ///< Not part of ABI
+};
+
+#endif /* AVUTIL_PIXFMT_H */
diff --git a/media/ffvpx/libavutil/qsort.h b/media/ffvpx/libavutil/qsort.h
new file mode 100644
index 0000000000..39b7a08852
--- /dev/null
+++ b/media/ffvpx/libavutil/qsort.h
@@ -0,0 +1,122 @@
+/*
+ * copyright (c) 2012 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_QSORT_H
+#define AVUTIL_QSORT_H
+
+#include "common.h"
+
+
+/**
+ * Quicksort
+ * This sort is fast, and fully inplace but not stable and it is possible
+ * to construct input that requires O(n^2) time but this is very unlikely to
+ * happen with non constructed input.
+ */
+#define AV_QSORT(p, num, type, cmp) do {\
+    void *stack[64][2];\
+    int sp= 1;\
+    stack[0][0] = p;\
+    stack[0][1] = (p)+(num)-1;\
+    while(sp){\
+        type *start= stack[--sp][0];\
+        type *end  = stack[  sp][1];\
+        while(start < end){\
+            if(start < end-1) {\
+                int checksort=0;\
+                type *right = end-2;\
+                type *left  = start+1;\
+                type *mid = start + ((end-start)>>1);\
+                if(cmp(start, end) > 0) {\
+                    if(cmp(  end, mid) > 0) FFSWAP(type, *start, *mid);\
+                    else                    FFSWAP(type, *start, *end);\
+                }else{\
+                    if(cmp(start, mid) > 0) FFSWAP(type, *start, *mid);\
+                    else checksort= 1;\
+                }\
+                if(cmp(mid, end) > 0){ \
+                    FFSWAP(type, *mid, *end);\
+                    checksort=0;\
+                }\
+                if(start == end-2) break;\
+                FFSWAP(type, end[-1], *mid);\
+                while(left <= right){\
+                    while(left<=right && cmp(left, end-1) < 0)\
+                        left++;\
+                    while(left<=right && cmp(right, end-1) > 0)\
+                        right--;\
+                    if(left <= right){\
+                        FFSWAP(type, *left, *right);\
+                        left++;\
+                        right--;\
+                    }\
+                }\
+                FFSWAP(type, end[-1], *left);\
+                if(checksort && (mid == left-1 || mid == left)){\
+                    mid= start;\
+                    while(mid<end && cmp(mid, mid+1) <= 0)\
+                        mid++;\
+                    if(mid==end)\
+                        break;\
+                }\
+                if(end-left < left-start){\
+                    stack[sp  ][0]= start;\
+                    stack[sp++][1]= right;\
+                    start = left+1;\
+                }else{\
+                    stack[sp  ][0]= left+1;\
+                    stack[sp++][1]= end;\
+                    end = right;\
+                }\
+            }else{\
+                if(cmp(start, end) > 0)\
+                    FFSWAP(type, *start, *end);\
+                break;\
+            }\
+        }\
+    }\
+} while (0)
+
+/**
+ * Merge sort, this sort requires a temporary buffer and is stable, its worst
+ * case time is O(n log n)
+ * @param p     must be a lvalue pointer, this function may exchange it with tmp
+ * @param tmp   must be a lvalue pointer, this function may exchange it with p
+ */
+#define AV_MSORT(p, tmp, num, type, cmp) do {\
+    unsigned i, j, step;\
+    for(step=1; step<(num); step+=step){\
+        for(i=0; i<(num); i+=2*step){\
+            unsigned a[2] = {i, i+step};\
+            unsigned end = FFMIN(i+2*step, (num));\
+            for(j=i; a[0]<i+step && a[1]<end; j++){\
+                int idx= cmp(p+a[0], p+a[1]) > 0;\
+                tmp[j] = p[ a[idx]++ ];\
+            }\
+            if(a[0]>=i+step) a[0] = a[1];\
+            for(; j<end; j++){\
+                tmp[j] = p[ a[0]++ ];\
+            }\
+        }\
+        FFSWAP(type*, p, tmp);\
+    }\
+} while (0)
+
+#endif /* AVUTIL_QSORT_H */
diff --git a/media/ffvpx/libavutil/rational.c b/media/ffvpx/libavutil/rational.c
new file mode 100644
index 0000000000..35ee08877f
--- /dev/null
+++ b/media/ffvpx/libavutil/rational.c
@@ -0,0 +1,184 @@
+/*
+ * rational numbers
+ * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * rational numbers
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#include "avassert.h"
+#include <limits.h>
+
+#include "common.h"
+#include "mathematics.h"
+#include "rational.h"
+
+int av_reduce(int *dst_num, int *dst_den,
+              int64_t num, int64_t den, int64_t max)
+{
+    AVRational a0 = { 0, 1 }, a1 = { 1, 0 };
+    int sign = (num < 0) ^ (den < 0);
+    int64_t gcd = av_gcd(FFABS(num), FFABS(den));
+
+    if (gcd) {
+        num = FFABS(num) / gcd;
+        den = FFABS(den) / gcd;
+    }
+    if (num <= max && den <= max) {
+        a1 = (AVRational) { num, den };
+        den = 0;
+    }
+
+    while (den) {
+        uint64_t x        = num / den;
+        int64_t next_den  = num - den * x;
+        int64_t a2n       = x * a1.num + a0.num;
+        int64_t a2d       = x * a1.den + a0.den;
+
+        if (a2n > max || a2d > max) {
+            if (a1.num) x =          (max - a0.num) / a1.num;
+            if (a1.den) x = FFMIN(x, (max - a0.den) / a1.den);
+
+            if (den * (2 * x * a1.den + a0.den) > num * a1.den)
+                a1 = (AVRational) { x * a1.num + a0.num, x * a1.den + a0.den };
+            break;
+        }
+
+        a0  = a1;
+        a1  = (AVRational) { a2n, a2d };
+        num = den;
+        den = next_den;
+    }
+    av_assert2(av_gcd(a1.num, a1.den) <= 1U);
+    av_assert2(a1.num <= max && a1.den <= max);
+
+    *dst_num = sign ? -a1.num : a1.num;
+    *dst_den = a1.den;
+
+    return den == 0;
+}
+
+AVRational av_mul_q(AVRational b, AVRational c)
+{
+    av_reduce(&b.num, &b.den,
+               b.num * (int64_t) c.num,
+               b.den * (int64_t) c.den, INT_MAX);
+    return b;
+}
+
+AVRational av_div_q(AVRational b, AVRational c)
+{
+    return av_mul_q(b, (AVRational) { c.den, c.num });
+}
+
+AVRational av_add_q(AVRational b, AVRational c) {
+    av_reduce(&b.num, &b.den,
+               b.num * (int64_t) c.den +
+               c.num * (int64_t) b.den,
+               b.den * (int64_t) c.den, INT_MAX);
+    return b;
+}
+
+AVRational av_sub_q(AVRational b, AVRational c)
+{
+    return av_add_q(b, (AVRational) { -c.num, c.den });
+}
+
+AVRational av_d2q(double d, int max)
+{
+    AVRational a;
+    int exponent;
+    int64_t den;
+    if (isnan(d))
+        return (AVRational) { 0,0 };
+    if (fabs(d) > INT_MAX + 3LL)
+        return (AVRational) { d < 0 ? -1 : 1, 0 };
+    frexp(d, &exponent);
+    exponent = FFMAX(exponent-1, 0);
+    den = 1LL << (61 - exponent);
+    // (int64_t)rint() and llrint() do not work with gcc on ia64 and sparc64,
+    // see Ticket2713 for affected gcc/glibc versions
+    av_reduce(&a.num, &a.den, floor(d * den + 0.5), den, max);
+    if ((!a.num || !a.den) && d && max>0 && max<INT_MAX)
+        av_reduce(&a.num, &a.den, floor(d * den + 0.5), den, INT_MAX);
+
+    return a;
+}
+
+int av_nearer_q(AVRational q, AVRational q1, AVRational q2)
+{
+    /* n/d is q, a/b is the median between q1 and q2 */
+    int64_t a = q1.num * (int64_t)q2.den + q2.num * (int64_t)q1.den;
+    int64_t b = 2 * (int64_t)q1.den * q2.den;
+
+    /* rnd_up(a*d/b) > n => a*d/b > n */
+    int64_t x_up = av_rescale_rnd(a, q.den, b, AV_ROUND_UP);
+
+    /* rnd_down(a*d/b) < n => a*d/b < n */
+    int64_t x_down = av_rescale_rnd(a, q.den, b, AV_ROUND_DOWN);
+
+    return ((x_up > q.num) - (x_down < q.num)) * av_cmp_q(q2, q1);
+}
+
+int av_find_nearest_q_idx(AVRational q, const AVRational* q_list)
+{
+    int i, nearest_q_idx = 0;
+    for (i = 0; q_list[i].den; i++)
+        if (av_nearer_q(q, q_list[i], q_list[nearest_q_idx]) > 0)
+            nearest_q_idx = i;
+
+    return nearest_q_idx;
+}
+
+uint32_t av_q2intfloat(AVRational q) {
+    int64_t n;
+    int shift;
+    int sign = 0;
+
+    if (q.den < 0) {
+        q.den *= -1;
+        q.num *= -1;
+    }
+    if (q.num < 0) {
+        q.num *= -1;
+        sign = 1;
+    }
+
+    if (!q.num && !q.den) return 0xFFC00000;
+    if (!q.num) return 0;
+    if (!q.den) return 0x7F800000 | (q.num & 0x80000000);
+
+    shift = 23 + av_log2(q.den) - av_log2(q.num);
+    if (shift >= 0) n = av_rescale(q.num, 1LL<<shift, q.den);
+    else            n = av_rescale(q.num, 1, ((int64_t)q.den) << -shift);
+
+    shift -= n >= (1<<24);
+    shift += n <  (1<<23);
+
+    if (shift >= 0) n = av_rescale(q.num, 1LL<<shift, q.den);
+    else            n = av_rescale(q.num, 1, ((int64_t)q.den) << -shift);
+
+    av_assert1(n <  (1<<24));
+    av_assert1(n >= (1<<23));
+
+    return sign<<31 | (150-shift)<<23 | (n - (1<<23));
+}
diff --git a/media/ffvpx/libavutil/rational.h b/media/ffvpx/libavutil/rational.h
new file mode 100644
index 0000000000..5c6b67b4e9
--- /dev/null
+++ b/media/ffvpx/libavutil/rational.h
@@ -0,0 +1,214 @@
+/*
+ * rational numbers
+ * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @ingroup lavu_math_rational
+ * Utilties for rational number calculation.
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#ifndef AVUTIL_RATIONAL_H
+#define AVUTIL_RATIONAL_H
+
+#include <stdint.h>
+#include <limits.h>
+#include "attributes.h"
+
+/**
+ * @defgroup lavu_math_rational AVRational
+ * @ingroup lavu_math
+ * Rational number calculation.
+ *
+ * While rational numbers can be expressed as floating-point numbers, the
+ * conversion process is a lossy one, so are floating-point operations. On the
+ * other hand, the nature of FFmpeg demands highly accurate calculation of
+ * timestamps. This set of rational number utilities serves as a generic
+ * interface for manipulating rational numbers as pairs of numerators and
+ * denominators.
+ *
+ * Many of the functions that operate on AVRational's have the suffix `_q`, in
+ * reference to the mathematical symbol "ℚ" (Q) which denotes the set of all
+ * rational numbers.
+ *
+ * @{
+ */
+
+/**
+ * Rational number (pair of numerator and denominator).
+ */
+typedef struct AVRational{
+    int num; ///< Numerator
+    int den; ///< Denominator
+} AVRational;
+
+/**
+ * Create an AVRational.
+ *
+ * Useful for compilers that do not support compound literals.
+ *
+ * @note The return value is not reduced.
+ * @see av_reduce()
+ */
+static inline AVRational av_make_q(int num, int den)
+{
+    AVRational r = { num, den };
+    return r;
+}
+
+/**
+ * Compare two rationals.
+ *
+ * @param a First rational
+ * @param b Second rational
+ *
+ * @return One of the following values:
+ *         - 0 if `a == b`
+ *         - 1 if `a > b`
+ *         - -1 if `a < b`
+ *         - `INT_MIN` if one of the values is of the form `0 / 0`
+ */
+static inline int av_cmp_q(AVRational a, AVRational b){
+    const int64_t tmp= a.num * (int64_t)b.den - b.num * (int64_t)a.den;
+
+    if(tmp) return (int)((tmp ^ a.den ^ b.den)>>63)|1;
+    else if(b.den && a.den) return 0;
+    else if(a.num && b.num) return (a.num>>31) - (b.num>>31);
+    else                    return INT_MIN;
+}
+
+/**
+ * Convert an AVRational to a `double`.
+ * @param a AVRational to convert
+ * @return `a` in floating-point form
+ * @see av_d2q()
+ */
+static inline double av_q2d(AVRational a){
+    return a.num / (double) a.den;
+}
+
+/**
+ * Reduce a fraction.
+ *
+ * This is useful for framerate calculations.
+ *
+ * @param[out] dst_num Destination numerator
+ * @param[out] dst_den Destination denominator
+ * @param[in]      num Source numerator
+ * @param[in]      den Source denominator
+ * @param[in]      max Maximum allowed values for `dst_num` & `dst_den`
+ * @return 1 if the operation is exact, 0 otherwise
+ */
+int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max);
+
+/**
+ * Multiply two rationals.
+ * @param b First rational
+ * @param c Second rational
+ * @return b*c
+ */
+AVRational av_mul_q(AVRational b, AVRational c) av_const;
+
+/**
+ * Divide one rational by another.
+ * @param b First rational
+ * @param c Second rational
+ * @return b/c
+ */
+AVRational av_div_q(AVRational b, AVRational c) av_const;
+
+/**
+ * Add two rationals.
+ * @param b First rational
+ * @param c Second rational
+ * @return b+c
+ */
+AVRational av_add_q(AVRational b, AVRational c) av_const;
+
+/**
+ * Subtract one rational from another.
+ * @param b First rational
+ * @param c Second rational
+ * @return b-c
+ */
+AVRational av_sub_q(AVRational b, AVRational c) av_const;
+
+/**
+ * Invert a rational.
+ * @param q value
+ * @return 1 / q
+ */
+static av_always_inline AVRational av_inv_q(AVRational q)
+{
+    AVRational r = { q.den, q.num };
+    return r;
+}
+
+/**
+ * Convert a double precision floating point number to a rational.
+ *
+ * In case of infinity, the returned value is expressed as `{1, 0}` or
+ * `{-1, 0}` depending on the sign.
+ *
+ * @param d   `double` to convert
+ * @param max Maximum allowed numerator and denominator
+ * @return `d` in AVRational form
+ * @see av_q2d()
+ */
+AVRational av_d2q(double d, int max) av_const;
+
+/**
+ * Find which of the two rationals is closer to another rational.
+ *
+ * @param q     Rational to be compared against
+ * @param q1,q2 Rationals to be tested
+ * @return One of the following values:
+ *         - 1 if `q1` is nearer to `q` than `q2`
+ *         - -1 if `q2` is nearer to `q` than `q1`
+ *         - 0 if they have the same distance
+ */
+int av_nearer_q(AVRational q, AVRational q1, AVRational q2);
+
+/**
+ * Find the value in a list of rationals nearest a given reference rational.
+ *
+ * @param q      Reference rational
+ * @param q_list Array of rationals terminated by `{0, 0}`
+ * @return Index of the nearest value found in the array
+ */
+int av_find_nearest_q_idx(AVRational q, const AVRational* q_list);
+
+/**
+ * Convert an AVRational to a IEEE 32-bit `float` expressed in fixed-point
+ * format.
+ *
+ * @param q Rational to be converted
+ * @return Equivalent floating-point value, expressed as an unsigned 32-bit
+ *         integer.
+ * @note The returned value is platform-indepedant.
+ */
+uint32_t av_q2intfloat(AVRational q);
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_RATIONAL_H */
diff --git a/media/ffvpx/libavutil/replaygain.h b/media/ffvpx/libavutil/replaygain.h
new file mode 100644
index 0000000000..b49bf1a3d9
--- /dev/null
+++ b/media/ffvpx/libavutil/replaygain.h
@@ -0,0 +1,50 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_REPLAYGAIN_H
+#define AVUTIL_REPLAYGAIN_H
+
+#include <stdint.h>
+
+/**
+ * ReplayGain information (see
+ * http://wiki.hydrogenaudio.org/index.php?title=ReplayGain_1.0_specification).
+ * The size of this struct is a part of the public ABI.
+ */
+typedef struct AVReplayGain {
+    /**
+     * Track replay gain in microbels (divide by 100000 to get the value in dB).
+     * Should be set to INT32_MIN when unknown.
+     */
+    int32_t track_gain;
+    /**
+     * Peak track amplitude, with 100000 representing full scale (but values
+     * may overflow). 0 when unknown.
+     */
+    uint32_t track_peak;
+    /**
+     * Same as track_gain, but for the whole album.
+     */
+    int32_t album_gain;
+    /**
+     * Same as track_peak, but for the whole album,
+     */
+    uint32_t album_peak;
+} AVReplayGain;
+
+#endif /* AVUTIL_REPLAYGAIN_H */
diff --git a/media/ffvpx/libavutil/reverse.c b/media/ffvpx/libavutil/reverse.c
new file mode 100644
index 0000000000..105eb03dda
--- /dev/null
+++ b/media/ffvpx/libavutil/reverse.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+
+const uint8_t ff_reverse[256] = {
+0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
+0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
+0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
+0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
+0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
+0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
+0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
+0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
+0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
+0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
+0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
+0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
+0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
+0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
+0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
+0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
+};
diff --git a/media/ffvpx/libavutil/reverse.h b/media/ffvpx/libavutil/reverse.h
new file mode 100644
index 0000000000..4eb6123932
--- /dev/null
+++ b/media/ffvpx/libavutil/reverse.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_REVERSE_H
+#define AVUTIL_REVERSE_H
+
+#include <stdint.h>
+
+extern const uint8_t ff_reverse[256];
+
+#endif /* AVUTIL_REVERSE_H */
diff --git a/media/ffvpx/libavutil/samplefmt.c b/media/ffvpx/libavutil/samplefmt.c
new file mode 100644
index 0000000000..fc077f6444
--- /dev/null
+++ b/media/ffvpx/libavutil/samplefmt.c
@@ -0,0 +1,254 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "common.h"
+#include "samplefmt.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct SampleFmtInfo {
+    char name[8];
+    int bits;
+    int planar;
+    enum AVSampleFormat altform; ///< planar<->packed alternative form
+} SampleFmtInfo;
+
+/** this table gives more information about formats */
+static const SampleFmtInfo sample_fmt_info[AV_SAMPLE_FMT_NB] = {
+    [AV_SAMPLE_FMT_U8]   = { .name =   "u8", .bits =  8, .planar = 0, .altform = AV_SAMPLE_FMT_U8P  },
+    [AV_SAMPLE_FMT_S16]  = { .name =  "s16", .bits = 16, .planar = 0, .altform = AV_SAMPLE_FMT_S16P },
+    [AV_SAMPLE_FMT_S32]  = { .name =  "s32", .bits = 32, .planar = 0, .altform = AV_SAMPLE_FMT_S32P },
+    [AV_SAMPLE_FMT_S64]  = { .name =  "s64", .bits = 64, .planar = 0, .altform = AV_SAMPLE_FMT_S64P },
+    [AV_SAMPLE_FMT_FLT]  = { .name =  "flt", .bits = 32, .planar = 0, .altform = AV_SAMPLE_FMT_FLTP },
+    [AV_SAMPLE_FMT_DBL]  = { .name =  "dbl", .bits = 64, .planar = 0, .altform = AV_SAMPLE_FMT_DBLP },
+    [AV_SAMPLE_FMT_U8P]  = { .name =  "u8p", .bits =  8, .planar = 1, .altform = AV_SAMPLE_FMT_U8   },
+    [AV_SAMPLE_FMT_S16P] = { .name = "s16p", .bits = 16, .planar = 1, .altform = AV_SAMPLE_FMT_S16  },
+    [AV_SAMPLE_FMT_S32P] = { .name = "s32p", .bits = 32, .planar = 1, .altform = AV_SAMPLE_FMT_S32  },
+    [AV_SAMPLE_FMT_S64P] = { .name = "s64p", .bits = 64, .planar = 1, .altform = AV_SAMPLE_FMT_S64  },
+    [AV_SAMPLE_FMT_FLTP] = { .name = "fltp", .bits = 32, .planar = 1, .altform = AV_SAMPLE_FMT_FLT  },
+    [AV_SAMPLE_FMT_DBLP] = { .name = "dblp", .bits = 64, .planar = 1, .altform = AV_SAMPLE_FMT_DBL  },
+};
+
+const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
+{
+    if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
+        return NULL;
+    return sample_fmt_info[sample_fmt].name;
+}
+
+enum AVSampleFormat av_get_sample_fmt(const char *name)
+{
+    int i;
+
+    for (i = 0; i < AV_SAMPLE_FMT_NB; i++)
+        if (!strcmp(sample_fmt_info[i].name, name))
+            return i;
+    return AV_SAMPLE_FMT_NONE;
+}
+
+enum AVSampleFormat av_get_alt_sample_fmt(enum AVSampleFormat sample_fmt, int planar)
+{
+    if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
+        return AV_SAMPLE_FMT_NONE;
+    if (sample_fmt_info[sample_fmt].planar == planar)
+        return sample_fmt;
+    return sample_fmt_info[sample_fmt].altform;
+}
+
+enum AVSampleFormat av_get_packed_sample_fmt(enum AVSampleFormat sample_fmt)
+{
+    if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
+        return AV_SAMPLE_FMT_NONE;
+    if (sample_fmt_info[sample_fmt].planar)
+        return sample_fmt_info[sample_fmt].altform;
+    return sample_fmt;
+}
+
+enum AVSampleFormat av_get_planar_sample_fmt(enum AVSampleFormat sample_fmt)
+{
+    if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
+        return AV_SAMPLE_FMT_NONE;
+    if (sample_fmt_info[sample_fmt].planar)
+        return sample_fmt;
+    return sample_fmt_info[sample_fmt].altform;
+}
+
+char *av_get_sample_fmt_string (char *buf, int buf_size, enum AVSampleFormat sample_fmt)
+{
+    /* print header */
+    if (sample_fmt < 0)
+        snprintf(buf, buf_size, "name  " " depth");
+    else if (sample_fmt < AV_SAMPLE_FMT_NB) {
+        SampleFmtInfo info = sample_fmt_info[sample_fmt];
+        snprintf (buf, buf_size, "%-6s" "   %2d ", info.name, info.bits);
+    }
+
+    return buf;
+}
+
+int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
+{
+     return sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB ?
+        0 : sample_fmt_info[sample_fmt].bits >> 3;
+}
+
+int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
+{
+     if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
+         return 0;
+     return sample_fmt_info[sample_fmt].planar;
+}
+
+int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples,
+                               enum AVSampleFormat sample_fmt, int align)
+{
+    int line_size;
+    int sample_size = av_get_bytes_per_sample(sample_fmt);
+    int planar      = av_sample_fmt_is_planar(sample_fmt);
+
+    /* validate parameter ranges */
+    if (!sample_size || nb_samples <= 0 || nb_channels <= 0)
+        return AVERROR(EINVAL);
+
+    /* auto-select alignment if not specified */
+    if (!align) {
+        if (nb_samples > INT_MAX - 31)
+            return AVERROR(EINVAL);
+        align = 1;
+        nb_samples = FFALIGN(nb_samples, 32);
+    }
+
+    /* check for integer overflow */
+    if (nb_channels > INT_MAX / align ||
+        (int64_t)nb_channels * nb_samples > (INT_MAX - (align * nb_channels)) / sample_size)
+        return AVERROR(EINVAL);
+
+    line_size = planar ? FFALIGN(nb_samples * sample_size,               align) :
+                         FFALIGN(nb_samples * sample_size * nb_channels, align);
+    if (linesize)
+        *linesize = line_size;
+
+    return planar ? line_size * nb_channels : line_size;
+}
+
+int av_samples_fill_arrays(uint8_t **audio_data, int *linesize,
+                           const uint8_t *buf, int nb_channels, int nb_samples,
+                           enum AVSampleFormat sample_fmt, int align)
+{
+    int ch, planar, buf_size, line_size;
+
+    planar   = av_sample_fmt_is_planar(sample_fmt);
+    buf_size = av_samples_get_buffer_size(&line_size, nb_channels, nb_samples,
+                                          sample_fmt, align);
+    if (buf_size < 0)
+        return buf_size;
+
+    audio_data[0] = (uint8_t *)buf;
+    for (ch = 1; planar && ch < nb_channels; ch++)
+        audio_data[ch] = audio_data[ch-1] + line_size;
+
+    if (linesize)
+        *linesize = line_size;
+
+    return buf_size;
+}
+
+int av_samples_alloc(uint8_t **audio_data, int *linesize, int nb_channels,
+                     int nb_samples, enum AVSampleFormat sample_fmt, int align)
+{
+    uint8_t *buf;
+    int size = av_samples_get_buffer_size(NULL, nb_channels, nb_samples,
+                                          sample_fmt, align);
+    if (size < 0)
+        return size;
+
+    buf = av_malloc(size);
+    if (!buf)
+        return AVERROR(ENOMEM);
+
+    size = av_samples_fill_arrays(audio_data, linesize, buf, nb_channels,
+                                  nb_samples, sample_fmt, align);
+    if (size < 0) {
+        av_free(buf);
+        return size;
+    }
+
+    av_samples_set_silence(audio_data, 0, nb_samples, nb_channels, sample_fmt);
+
+    return size;
+}
+
+int av_samples_alloc_array_and_samples(uint8_t ***audio_data, int *linesize, int nb_channels,
+                                       int nb_samples, enum AVSampleFormat sample_fmt, int align)
+{
+    int ret, nb_planes = av_sample_fmt_is_planar(sample_fmt) ? nb_channels : 1;
+
+    *audio_data = av_calloc(nb_planes, sizeof(**audio_data));
+    if (!*audio_data)
+        return AVERROR(ENOMEM);
+    ret = av_samples_alloc(*audio_data, linesize, nb_channels,
+                           nb_samples, sample_fmt, align);
+    if (ret < 0)
+        av_freep(audio_data);
+    return ret;
+}
+
+int av_samples_copy(uint8_t **dst, uint8_t * const *src, int dst_offset,
+                    int src_offset, int nb_samples, int nb_channels,
+                    enum AVSampleFormat sample_fmt)
+{
+    int planar      = av_sample_fmt_is_planar(sample_fmt);
+    int planes      = planar ? nb_channels : 1;
+    int block_align = av_get_bytes_per_sample(sample_fmt) * (planar ? 1 : nb_channels);
+    int data_size   = nb_samples * block_align;
+    int i;
+
+    dst_offset *= block_align;
+    src_offset *= block_align;
+
+    if((dst[0] < src[0] ? src[0] - dst[0] : dst[0] - src[0]) >= data_size) {
+        for (i = 0; i < planes; i++)
+            memcpy(dst[i] + dst_offset, src[i] + src_offset, data_size);
+    } else {
+        for (i = 0; i < planes; i++)
+            memmove(dst[i] + dst_offset, src[i] + src_offset, data_size);
+    }
+
+    return 0;
+}
+
+int av_samples_set_silence(uint8_t **audio_data, int offset, int nb_samples,
+                           int nb_channels, enum AVSampleFormat sample_fmt)
+{
+    int planar      = av_sample_fmt_is_planar(sample_fmt);
+    int planes      = planar ? nb_channels : 1;
+    int block_align = av_get_bytes_per_sample(sample_fmt) * (planar ? 1 : nb_channels);
+    int data_size   = nb_samples * block_align;
+    int fill_char   = (sample_fmt == AV_SAMPLE_FMT_U8 ||
+                     sample_fmt == AV_SAMPLE_FMT_U8P) ? 0x80 : 0x00;
+    int i;
+
+    offset *= block_align;
+
+    for (i = 0; i < planes; i++)
+        memset(audio_data[i] + offset, fill_char, data_size);
+
+    return 0;
+}
diff --git a/media/ffvpx/libavutil/samplefmt.h b/media/ffvpx/libavutil/samplefmt.h
new file mode 100644
index 0000000000..8cd43ae856
--- /dev/null
+++ b/media/ffvpx/libavutil/samplefmt.h
@@ -0,0 +1,272 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_SAMPLEFMT_H
+#define AVUTIL_SAMPLEFMT_H
+
+#include <stdint.h>
+
+#include "avutil.h"
+#include "attributes.h"
+
+/**
+ * @addtogroup lavu_audio
+ * @{
+ *
+ * @defgroup lavu_sampfmts Audio sample formats
+ *
+ * Audio sample format enumeration and related convenience functions.
+ * @{
+ */
+
+/**
+ * Audio sample formats
+ *
+ * - The data described by the sample format is always in native-endian order.
+ *   Sample values can be expressed by native C types, hence the lack of a signed
+ *   24-bit sample format even though it is a common raw audio data format.
+ *
+ * - The floating-point formats are based on full volume being in the range
+ *   [-1.0, 1.0]. Any values outside this range are beyond full volume level.
+ *
+ * - The data layout as used in av_samples_fill_arrays() and elsewhere in FFmpeg
+ *   (such as AVFrame in libavcodec) is as follows:
+ *
+ * @par
+ * For planar sample formats, each audio channel is in a separate data plane,
+ * and linesize is the buffer size, in bytes, for a single plane. All data
+ * planes must be the same size. For packed sample formats, only the first data
+ * plane is used, and samples for each channel are interleaved. In this case,
+ * linesize is the buffer size, in bytes, for the 1 plane.
+ *
+ */
+enum AVSampleFormat {
+    AV_SAMPLE_FMT_NONE = -1,
+    AV_SAMPLE_FMT_U8,          ///< unsigned 8 bits
+    AV_SAMPLE_FMT_S16,         ///< signed 16 bits
+    AV_SAMPLE_FMT_S32,         ///< signed 32 bits
+    AV_SAMPLE_FMT_FLT,         ///< float
+    AV_SAMPLE_FMT_DBL,         ///< double
+
+    AV_SAMPLE_FMT_U8P,         ///< unsigned 8 bits, planar
+    AV_SAMPLE_FMT_S16P,        ///< signed 16 bits, planar
+    AV_SAMPLE_FMT_S32P,        ///< signed 32 bits, planar
+    AV_SAMPLE_FMT_FLTP,        ///< float, planar
+    AV_SAMPLE_FMT_DBLP,        ///< double, planar
+    AV_SAMPLE_FMT_S64,         ///< signed 64 bits
+    AV_SAMPLE_FMT_S64P,        ///< signed 64 bits, planar
+
+    AV_SAMPLE_FMT_NB           ///< Number of sample formats. DO NOT USE if linking dynamically
+};
+
+/**
+ * Return the name of sample_fmt, or NULL if sample_fmt is not
+ * recognized.
+ */
+const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt);
+
+/**
+ * Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE
+ * on error.
+ */
+enum AVSampleFormat av_get_sample_fmt(const char *name);
+
+/**
+ * Return the planar<->packed alternative form of the given sample format, or
+ * AV_SAMPLE_FMT_NONE on error. If the passed sample_fmt is already in the
+ * requested planar/packed format, the format returned is the same as the
+ * input.
+ */
+enum AVSampleFormat av_get_alt_sample_fmt(enum AVSampleFormat sample_fmt, int planar);
+
+/**
+ * Get the packed alternative form of the given sample format.
+ *
+ * If the passed sample_fmt is already in packed format, the format returned is
+ * the same as the input.
+ *
+ * @return  the packed alternative form of the given sample format or
+            AV_SAMPLE_FMT_NONE on error.
+ */
+enum AVSampleFormat av_get_packed_sample_fmt(enum AVSampleFormat sample_fmt);
+
+/**
+ * Get the planar alternative form of the given sample format.
+ *
+ * If the passed sample_fmt is already in planar format, the format returned is
+ * the same as the input.
+ *
+ * @return  the planar alternative form of the given sample format or
+            AV_SAMPLE_FMT_NONE on error.
+ */
+enum AVSampleFormat av_get_planar_sample_fmt(enum AVSampleFormat sample_fmt);
+
+/**
+ * Generate a string corresponding to the sample format with
+ * sample_fmt, or a header if sample_fmt is negative.
+ *
+ * @param buf the buffer where to write the string
+ * @param buf_size the size of buf
+ * @param sample_fmt the number of the sample format to print the
+ * corresponding info string, or a negative value to print the
+ * corresponding header.
+ * @return the pointer to the filled buffer or NULL if sample_fmt is
+ * unknown or in case of other errors
+ */
+char *av_get_sample_fmt_string(char *buf, int buf_size, enum AVSampleFormat sample_fmt);
+
+/**
+ * Return number of bytes per sample.
+ *
+ * @param sample_fmt the sample format
+ * @return number of bytes per sample or zero if unknown for the given
+ * sample format
+ */
+int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt);
+
+/**
+ * Check if the sample format is planar.
+ *
+ * @param sample_fmt the sample format to inspect
+ * @return 1 if the sample format is planar, 0 if it is interleaved
+ */
+int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt);
+
+/**
+ * Get the required buffer size for the given audio parameters.
+ *
+ * @param[out] linesize calculated linesize, may be NULL
+ * @param nb_channels   the number of channels
+ * @param nb_samples    the number of samples in a single channel
+ * @param sample_fmt    the sample format
+ * @param align         buffer size alignment (0 = default, 1 = no alignment)
+ * @return              required buffer size, or negative error code on failure
+ */
+int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples,
+                               enum AVSampleFormat sample_fmt, int align);
+
+/**
+ * @}
+ *
+ * @defgroup lavu_sampmanip Samples manipulation
+ *
+ * Functions that manipulate audio samples
+ * @{
+ */
+
+/**
+ * Fill plane data pointers and linesize for samples with sample
+ * format sample_fmt.
+ *
+ * The audio_data array is filled with the pointers to the samples data planes:
+ * for planar, set the start point of each channel's data within the buffer,
+ * for packed, set the start point of the entire buffer only.
+ *
+ * The value pointed to by linesize is set to the aligned size of each
+ * channel's data buffer for planar layout, or to the aligned size of the
+ * buffer for all channels for packed layout.
+ *
+ * The buffer in buf must be big enough to contain all the samples
+ * (use av_samples_get_buffer_size() to compute its minimum size),
+ * otherwise the audio_data pointers will point to invalid data.
+ *
+ * @see enum AVSampleFormat
+ * The documentation for AVSampleFormat describes the data layout.
+ *
+ * @param[out] audio_data  array to be filled with the pointer for each channel
+ * @param[out] linesize    calculated linesize, may be NULL
+ * @param buf              the pointer to a buffer containing the samples
+ * @param nb_channels      the number of channels
+ * @param nb_samples       the number of samples in a single channel
+ * @param sample_fmt       the sample format
+ * @param align            buffer size alignment (0 = default, 1 = no alignment)
+ * @return                 >=0 on success or a negative error code on failure
+ * @todo return minimum size in bytes required for the buffer in case
+ * of success at the next bump
+ */
+int av_samples_fill_arrays(uint8_t **audio_data, int *linesize,
+                           const uint8_t *buf,
+                           int nb_channels, int nb_samples,
+                           enum AVSampleFormat sample_fmt, int align);
+
+/**
+ * Allocate a samples buffer for nb_samples samples, and fill data pointers and
+ * linesize accordingly.
+ * The allocated samples buffer can be freed by using av_freep(&audio_data[0])
+ * Allocated data will be initialized to silence.
+ *
+ * @see enum AVSampleFormat
+ * The documentation for AVSampleFormat describes the data layout.
+ *
+ * @param[out] audio_data  array to be filled with the pointer for each channel
+ * @param[out] linesize    aligned size for audio buffer(s), may be NULL
+ * @param nb_channels      number of audio channels
+ * @param nb_samples       number of samples per channel
+ * @param align            buffer size alignment (0 = default, 1 = no alignment)
+ * @return                 >=0 on success or a negative error code on failure
+ * @todo return the size of the allocated buffer in case of success at the next bump
+ * @see av_samples_fill_arrays()
+ * @see av_samples_alloc_array_and_samples()
+ */
+int av_samples_alloc(uint8_t **audio_data, int *linesize, int nb_channels,
+                     int nb_samples, enum AVSampleFormat sample_fmt, int align);
+
+/**
+ * Allocate a data pointers array, samples buffer for nb_samples
+ * samples, and fill data pointers and linesize accordingly.
+ *
+ * This is the same as av_samples_alloc(), but also allocates the data
+ * pointers array.
+ *
+ * @see av_samples_alloc()
+ */
+int av_samples_alloc_array_and_samples(uint8_t ***audio_data, int *linesize, int nb_channels,
+                                       int nb_samples, enum AVSampleFormat sample_fmt, int align);
+
+/**
+ * Copy samples from src to dst.
+ *
+ * @param dst destination array of pointers to data planes
+ * @param src source array of pointers to data planes
+ * @param dst_offset offset in samples at which the data will be written to dst
+ * @param src_offset offset in samples at which the data will be read from src
+ * @param nb_samples number of samples to be copied
+ * @param nb_channels number of audio channels
+ * @param sample_fmt audio sample format
+ */
+int av_samples_copy(uint8_t **dst, uint8_t * const *src, int dst_offset,
+                    int src_offset, int nb_samples, int nb_channels,
+                    enum AVSampleFormat sample_fmt);
+
+/**
+ * Fill an audio buffer with silence.
+ *
+ * @param audio_data  array of pointers to data planes
+ * @param offset      offset in samples at which to start filling
+ * @param nb_samples  number of samples to fill
+ * @param nb_channels number of audio channels
+ * @param sample_fmt  audio sample format
+ */
+int av_samples_set_silence(uint8_t **audio_data, int offset, int nb_samples,
+                           int nb_channels, enum AVSampleFormat sample_fmt);
+
+/**
+ * @}
+ * @}
+ */
+#endif /* AVUTIL_SAMPLEFMT_H */
diff --git a/media/ffvpx/libavutil/slicethread.c b/media/ffvpx/libavutil/slicethread.c
new file mode 100644
index 0000000000..dfbe551ef2
--- /dev/null
+++ b/media/ffvpx/libavutil/slicethread.c
@@ -0,0 +1,255 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdatomic.h>
+#include "slicethread.h"
+#include "mem.h"
+#include "thread.h"
+#include "avassert.h"
+
+#if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
+
+typedef struct WorkerContext {
+    AVSliceThread   *ctx;
+    pthread_mutex_t mutex;
+    pthread_cond_t  cond;
+    pthread_t       thread;
+    int             done;
+} WorkerContext;
+
+struct AVSliceThread {
+    WorkerContext   *workers;
+    int             nb_threads;
+    int             nb_active_threads;
+    int             nb_jobs;
+
+    atomic_uint     first_job;
+    atomic_uint     current_job;
+    pthread_mutex_t done_mutex;
+    pthread_cond_t  done_cond;
+    int             done;
+    int             finished;
+
+    void            *priv;
+    void            (*worker_func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads);
+    void            (*main_func)(void *priv);
+};
+
+static int run_jobs(AVSliceThread *ctx)
+{
+    unsigned nb_jobs    = ctx->nb_jobs;
+    unsigned nb_active_threads = ctx->nb_active_threads;
+    unsigned first_job    = atomic_fetch_add_explicit(&ctx->first_job, 1, memory_order_acq_rel);
+    unsigned current_job  = first_job;
+
+    do {
+        ctx->worker_func(ctx->priv, current_job, first_job, nb_jobs, nb_active_threads);
+    } while ((current_job = atomic_fetch_add_explicit(&ctx->current_job, 1, memory_order_acq_rel)) < nb_jobs);
+
+    return current_job == nb_jobs + nb_active_threads - 1;
+}
+
+static void *attribute_align_arg thread_worker(void *v)
+{
+    WorkerContext *w = v;
+    AVSliceThread *ctx = w->ctx;
+
+    pthread_mutex_lock(&w->mutex);
+    pthread_cond_signal(&w->cond);
+
+    while (1) {
+        w->done = 1;
+        while (w->done)
+            pthread_cond_wait(&w->cond, &w->mutex);
+
+        if (ctx->finished) {
+            pthread_mutex_unlock(&w->mutex);
+            return NULL;
+        }
+
+        if (run_jobs(ctx)) {
+            pthread_mutex_lock(&ctx->done_mutex);
+            ctx->done = 1;
+            pthread_cond_signal(&ctx->done_cond);
+            pthread_mutex_unlock(&ctx->done_mutex);
+        }
+    }
+}
+
+int avpriv_slicethread_create(AVSliceThread **pctx, void *priv,
+                              void (*worker_func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads),
+                              void (*main_func)(void *priv),
+                              int nb_threads)
+{
+    AVSliceThread *ctx;
+    int nb_workers, i;
+
+    av_assert0(nb_threads >= 0);
+    if (!nb_threads) {
+        int nb_cpus = av_cpu_count();
+        if (nb_cpus > 1)
+            nb_threads = nb_cpus + 1;
+        else
+            nb_threads = 1;
+    }
+
+    nb_workers = nb_threads;
+    if (!main_func)
+        nb_workers--;
+
+    *pctx = ctx = av_mallocz(sizeof(*ctx));
+    if (!ctx)
+        return AVERROR(ENOMEM);
+
+    if (nb_workers && !(ctx->workers = av_calloc(nb_workers, sizeof(*ctx->workers)))) {
+        av_freep(pctx);
+        return AVERROR(ENOMEM);
+    }
+
+    ctx->priv        = priv;
+    ctx->worker_func = worker_func;
+    ctx->main_func   = main_func;
+    ctx->nb_threads  = nb_threads;
+    ctx->nb_active_threads = 0;
+    ctx->nb_jobs     = 0;
+    ctx->finished    = 0;
+
+    atomic_init(&ctx->first_job, 0);
+    atomic_init(&ctx->current_job, 0);
+    pthread_mutex_init(&ctx->done_mutex, NULL);
+    pthread_cond_init(&ctx->done_cond, NULL);
+    ctx->done        = 0;
+
+    for (i = 0; i < nb_workers; i++) {
+        WorkerContext *w = &ctx->workers[i];
+        int ret;
+        w->ctx = ctx;
+        pthread_mutex_init(&w->mutex, NULL);
+        pthread_cond_init(&w->cond, NULL);
+        pthread_mutex_lock(&w->mutex);
+        w->done = 0;
+
+        if (ret = pthread_create(&w->thread, NULL, thread_worker, w)) {
+            ctx->nb_threads = main_func ? i : i + 1;
+            pthread_mutex_unlock(&w->mutex);
+            pthread_cond_destroy(&w->cond);
+            pthread_mutex_destroy(&w->mutex);
+            avpriv_slicethread_free(pctx);
+            return AVERROR(ret);
+        }
+
+        while (!w->done)
+            pthread_cond_wait(&w->cond, &w->mutex);
+        pthread_mutex_unlock(&w->mutex);
+    }
+
+    return nb_threads;
+}
+
+void avpriv_slicethread_execute(AVSliceThread *ctx, int nb_jobs, int execute_main)
+{
+    int nb_workers, i, is_last = 0;
+
+    av_assert0(nb_jobs > 0);
+    ctx->nb_jobs           = nb_jobs;
+    ctx->nb_active_threads = FFMIN(nb_jobs, ctx->nb_threads);
+    atomic_store_explicit(&ctx->first_job, 0, memory_order_relaxed);
+    atomic_store_explicit(&ctx->current_job, ctx->nb_active_threads, memory_order_relaxed);
+    nb_workers             = ctx->nb_active_threads;
+    if (!ctx->main_func || !execute_main)
+        nb_workers--;
+
+    for (i = 0; i < nb_workers; i++) {
+        WorkerContext *w = &ctx->workers[i];
+        pthread_mutex_lock(&w->mutex);
+        w->done = 0;
+        pthread_cond_signal(&w->cond);
+        pthread_mutex_unlock(&w->mutex);
+    }
+
+    if (ctx->main_func && execute_main)
+        ctx->main_func(ctx->priv);
+    else
+        is_last = run_jobs(ctx);
+
+    if (!is_last) {
+        pthread_mutex_lock(&ctx->done_mutex);
+        while (!ctx->done)
+            pthread_cond_wait(&ctx->done_cond, &ctx->done_mutex);
+        ctx->done = 0;
+        pthread_mutex_unlock(&ctx->done_mutex);
+    }
+}
+
+void avpriv_slicethread_free(AVSliceThread **pctx)
+{
+    AVSliceThread *ctx;
+    int nb_workers, i;
+
+    if (!pctx || !*pctx)
+        return;
+
+    ctx = *pctx;
+    nb_workers = ctx->nb_threads;
+    if (!ctx->main_func)
+        nb_workers--;
+
+    ctx->finished = 1;
+    for (i = 0; i < nb_workers; i++) {
+        WorkerContext *w = &ctx->workers[i];
+        pthread_mutex_lock(&w->mutex);
+        w->done = 0;
+        pthread_cond_signal(&w->cond);
+        pthread_mutex_unlock(&w->mutex);
+    }
+
+    for (i = 0; i < nb_workers; i++) {
+        WorkerContext *w = &ctx->workers[i];
+        pthread_join(w->thread, NULL);
+        pthread_cond_destroy(&w->cond);
+        pthread_mutex_destroy(&w->mutex);
+    }
+
+    pthread_cond_destroy(&ctx->done_cond);
+    pthread_mutex_destroy(&ctx->done_mutex);
+    av_freep(&ctx->workers);
+    av_freep(pctx);
+}
+
+#else /* HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS32THREADS */
+
+int avpriv_slicethread_create(AVSliceThread **pctx, void *priv,
+                              void (*worker_func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads),
+                              void (*main_func)(void *priv),
+                              int nb_threads)
+{
+    *pctx = NULL;
+    return AVERROR(EINVAL);
+}
+
+void avpriv_slicethread_execute(AVSliceThread *ctx, int nb_jobs, int execute_main)
+{
+    av_assert0(0);
+}
+
+void avpriv_slicethread_free(AVSliceThread **pctx)
+{
+    av_assert0(!pctx || !*pctx);
+}
+
+#endif /* HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS32THREADS */
diff --git a/media/ffvpx/libavutil/slicethread.h b/media/ffvpx/libavutil/slicethread.h
new file mode 100644
index 0000000000..f6f6f302c4
--- /dev/null
+++ b/media/ffvpx/libavutil/slicethread.h
@@ -0,0 +1,52 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_SLICETHREAD_H
+#define AVUTIL_SLICETHREAD_H
+
+typedef struct AVSliceThread AVSliceThread;
+
+/**
+ * Create slice threading context.
+ * @param pctx slice threading context returned here
+ * @param priv private pointer to be passed to callback function
+ * @param worker_func callback function to be executed
+ * @param main_func special callback function, called from main thread, may be NULL
+ * @param nb_threads number of threads, 0 for automatic, must be >= 0
+ * @return return number of threads or negative AVERROR on failure
+ */
+int avpriv_slicethread_create(AVSliceThread **pctx, void *priv,
+                              void (*worker_func)(void *priv, int jobnr, int threadnr, int nb_jobs, int nb_threads),
+                              void (*main_func)(void *priv),
+                              int nb_threads);
+
+/**
+ * Execute slice threading.
+ * @param ctx slice threading context
+ * @param nb_jobs number of jobs, must be > 0
+ * @param execute_main also execute main_func
+ */
+void avpriv_slicethread_execute(AVSliceThread *ctx, int nb_jobs, int execute_main);
+
+/**
+ * Destroy slice threading context.
+ * @param pctx pointer to context
+ */
+void avpriv_slicethread_free(AVSliceThread **pctx);
+
+#endif
diff --git a/media/ffvpx/libavutil/thread.h b/media/ffvpx/libavutil/thread.h
new file mode 100644
index 0000000000..cc5272d379
--- /dev/null
+++ b/media/ffvpx/libavutil/thread.h
@@ -0,0 +1,173 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+// This header should only be used to simplify code where
+// threading is optional, not as a generic threading abstraction.
+
+#ifndef AVUTIL_THREAD_H
+#define AVUTIL_THREAD_H
+
+#include "config.h"
+
+#if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
+
+#if HAVE_PTHREADS
+#include <pthread.h>
+
+#if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1
+
+#include "log.h"
+
+#define ASSERT_PTHREAD_NORET(func, ...) do {                            \
+    int ret = func(__VA_ARGS__);                                        \
+    if (ret) {                                                          \
+        char errbuf[AV_ERROR_MAX_STRING_SIZE] = "";                     \
+        av_log(NULL, AV_LOG_FATAL, AV_STRINGIFY(func)                   \
+               " failed with error: %s\n",                              \
+               av_make_error_string(errbuf, AV_ERROR_MAX_STRING_SIZE,   \
+                                    AVERROR(ret)));                     \
+        abort();                                                        \
+    }                                                                   \
+} while (0)
+
+#define ASSERT_PTHREAD(func, ...) do {                                  \
+    ASSERT_PTHREAD_NORET(func, __VA_ARGS__);                            \
+    return 0;                                                           \
+} while (0)
+
+static inline int strict_pthread_join(pthread_t thread, void **value_ptr)
+{
+    ASSERT_PTHREAD(pthread_join, thread, value_ptr);
+}
+
+static inline int strict_pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
+{
+    if (attr) {
+        ASSERT_PTHREAD_NORET(pthread_mutex_init, mutex, attr);
+    } else {
+        pthread_mutexattr_t local_attr;
+        ASSERT_PTHREAD_NORET(pthread_mutexattr_init, &local_attr);
+        ASSERT_PTHREAD_NORET(pthread_mutexattr_settype, &local_attr, PTHREAD_MUTEX_ERRORCHECK);
+        ASSERT_PTHREAD_NORET(pthread_mutex_init, mutex, &local_attr);
+        ASSERT_PTHREAD_NORET(pthread_mutexattr_destroy, &local_attr);
+    }
+    return 0;
+}
+
+static inline int strict_pthread_mutex_destroy(pthread_mutex_t *mutex)
+{
+    ASSERT_PTHREAD(pthread_mutex_destroy, mutex);
+}
+
+static inline int strict_pthread_mutex_lock(pthread_mutex_t *mutex)
+{
+    ASSERT_PTHREAD(pthread_mutex_lock, mutex);
+}
+
+static inline int strict_pthread_mutex_unlock(pthread_mutex_t *mutex)
+{
+    ASSERT_PTHREAD(pthread_mutex_unlock, mutex);
+}
+
+static inline int strict_pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
+{
+    ASSERT_PTHREAD(pthread_cond_init, cond, attr);
+}
+
+static inline int strict_pthread_cond_destroy(pthread_cond_t *cond)
+{
+    ASSERT_PTHREAD(pthread_cond_destroy, cond);
+}
+
+static inline int strict_pthread_cond_signal(pthread_cond_t *cond)
+{
+    ASSERT_PTHREAD(pthread_cond_signal, cond);
+}
+
+static inline int strict_pthread_cond_broadcast(pthread_cond_t *cond)
+{
+    ASSERT_PTHREAD(pthread_cond_broadcast, cond);
+}
+
+static inline int strict_pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
+{
+    ASSERT_PTHREAD(pthread_cond_wait, cond, mutex);
+}
+
+static inline int strict_pthread_once(pthread_once_t *once_control, void (*init_routine)(void))
+{
+    ASSERT_PTHREAD(pthread_once, once_control, init_routine);
+}
+
+#define pthread_join           strict_pthread_join
+#define pthread_mutex_init     strict_pthread_mutex_init
+#define pthread_mutex_destroy  strict_pthread_mutex_destroy
+#define pthread_mutex_lock     strict_pthread_mutex_lock
+#define pthread_mutex_unlock   strict_pthread_mutex_unlock
+#define pthread_cond_init      strict_pthread_cond_init
+#define pthread_cond_destroy   strict_pthread_cond_destroy
+#define pthread_cond_signal    strict_pthread_cond_signal
+#define pthread_cond_broadcast strict_pthread_cond_broadcast
+#define pthread_cond_wait      strict_pthread_cond_wait
+#define pthread_once           strict_pthread_once
+#endif
+
+#elif HAVE_OS2THREADS
+#include "compat/os2threads.h"
+#else
+#include "compat/w32pthreads.h"
+#endif
+
+#define AVMutex pthread_mutex_t
+#define AV_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
+
+#define ff_mutex_init    pthread_mutex_init
+#define ff_mutex_lock    pthread_mutex_lock
+#define ff_mutex_unlock  pthread_mutex_unlock
+#define ff_mutex_destroy pthread_mutex_destroy
+
+#define AVOnce pthread_once_t
+#define AV_ONCE_INIT PTHREAD_ONCE_INIT
+
+#define ff_thread_once(control, routine) pthread_once(control, routine)
+
+#else
+
+#define AVMutex char
+#define AV_MUTEX_INITIALIZER 0
+
+static inline int ff_mutex_init(AVMutex *mutex, const void *attr){ return 0; }
+static inline int ff_mutex_lock(AVMutex *mutex){ return 0; }
+static inline int ff_mutex_unlock(AVMutex *mutex){ return 0; }
+static inline int ff_mutex_destroy(AVMutex *mutex){ return 0; }
+
+#define AVOnce char
+#define AV_ONCE_INIT 0
+
+static inline int ff_thread_once(char *control, void (*routine)(void))
+{
+    if (!*control) {
+        routine();
+        *control = 1;
+    }
+    return 0;
+}
+
+#endif
+
+#endif /* AVUTIL_THREAD_H */
diff --git a/media/ffvpx/libavutil/threadmessage.c b/media/ffvpx/libavutil/threadmessage.c
new file mode 100644
index 0000000000..764b7fb813
--- /dev/null
+++ b/media/ffvpx/libavutil/threadmessage.c
@@ -0,0 +1,235 @@
+/*
+ * Copyright (c) 2014 Nicolas George
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "fifo.h"
+#include "threadmessage.h"
+#include "thread.h"
+
+struct AVThreadMessageQueue {
+#if HAVE_THREADS
+    AVFifoBuffer *fifo;
+    pthread_mutex_t lock;
+    pthread_cond_t cond_recv;
+    pthread_cond_t cond_send;
+    int err_send;
+    int err_recv;
+    unsigned elsize;
+    void (*free_func)(void *msg);
+#else
+    int dummy;
+#endif
+};
+
+int av_thread_message_queue_alloc(AVThreadMessageQueue **mq,
+                                  unsigned nelem,
+                                  unsigned elsize)
+{
+#if HAVE_THREADS
+    AVThreadMessageQueue *rmq;
+    int ret = 0;
+
+    if (nelem > INT_MAX / elsize)
+        return AVERROR(EINVAL);
+    if (!(rmq = av_mallocz(sizeof(*rmq))))
+        return AVERROR(ENOMEM);
+    if ((ret = pthread_mutex_init(&rmq->lock, NULL))) {
+        av_free(rmq);
+        return AVERROR(ret);
+    }
+    if ((ret = pthread_cond_init(&rmq->cond_recv, NULL))) {
+        pthread_mutex_destroy(&rmq->lock);
+        av_free(rmq);
+        return AVERROR(ret);
+    }
+    if ((ret = pthread_cond_init(&rmq->cond_send, NULL))) {
+        pthread_cond_destroy(&rmq->cond_recv);
+        pthread_mutex_destroy(&rmq->lock);
+        av_free(rmq);
+        return AVERROR(ret);
+    }
+    if (!(rmq->fifo = av_fifo_alloc(elsize * nelem))) {
+        pthread_cond_destroy(&rmq->cond_send);
+        pthread_cond_destroy(&rmq->cond_recv);
+        pthread_mutex_destroy(&rmq->lock);
+        av_free(rmq);
+        return AVERROR(ENOMEM);
+    }
+    rmq->elsize = elsize;
+    *mq = rmq;
+    return 0;
+#else
+    *mq = NULL;
+    return AVERROR(ENOSYS);
+#endif /* HAVE_THREADS */
+}
+
+void av_thread_message_queue_set_free_func(AVThreadMessageQueue *mq,
+                                           void (*free_func)(void *msg))
+{
+#if HAVE_THREADS
+    mq->free_func = free_func;
+#endif
+}
+
+void av_thread_message_queue_free(AVThreadMessageQueue **mq)
+{
+#if HAVE_THREADS
+    if (*mq) {
+        av_thread_message_flush(*mq);
+        av_fifo_freep(&(*mq)->fifo);
+        pthread_cond_destroy(&(*mq)->cond_send);
+        pthread_cond_destroy(&(*mq)->cond_recv);
+        pthread_mutex_destroy(&(*mq)->lock);
+        av_freep(mq);
+    }
+#endif
+}
+
+int av_thread_message_queue_nb_elems(AVThreadMessageQueue *mq)
+{
+#if HAVE_THREADS
+    int ret;
+    pthread_mutex_lock(&mq->lock);
+    ret = av_fifo_size(mq->fifo);
+    pthread_mutex_unlock(&mq->lock);
+    return ret / mq->elsize;
+#else
+    return AVERROR(ENOSYS);
+#endif
+}
+
+#if HAVE_THREADS
+
+static int av_thread_message_queue_send_locked(AVThreadMessageQueue *mq,
+                                               void *msg,
+                                               unsigned flags)
+{
+    while (!mq->err_send && av_fifo_space(mq->fifo) < mq->elsize) {
+        if ((flags & AV_THREAD_MESSAGE_NONBLOCK))
+            return AVERROR(EAGAIN);
+        pthread_cond_wait(&mq->cond_send, &mq->lock);
+    }
+    if (mq->err_send)
+        return mq->err_send;
+    av_fifo_generic_write(mq->fifo, msg, mq->elsize, NULL);
+    /* one message is sent, signal one receiver */
+    pthread_cond_signal(&mq->cond_recv);
+    return 0;
+}
+
+static int av_thread_message_queue_recv_locked(AVThreadMessageQueue *mq,
+                                               void *msg,
+                                               unsigned flags)
+{
+    while (!mq->err_recv && av_fifo_size(mq->fifo) < mq->elsize) {
+        if ((flags & AV_THREAD_MESSAGE_NONBLOCK))
+            return AVERROR(EAGAIN);
+        pthread_cond_wait(&mq->cond_recv, &mq->lock);
+    }
+    if (av_fifo_size(mq->fifo) < mq->elsize)
+        return mq->err_recv;
+    av_fifo_generic_read(mq->fifo, msg, mq->elsize, NULL);
+    /* one message space appeared, signal one sender */
+    pthread_cond_signal(&mq->cond_send);
+    return 0;
+}
+
+#endif /* HAVE_THREADS */
+
+int av_thread_message_queue_send(AVThreadMessageQueue *mq,
+                                 void *msg,
+                                 unsigned flags)
+{
+#if HAVE_THREADS
+    int ret;
+
+    pthread_mutex_lock(&mq->lock);
+    ret = av_thread_message_queue_send_locked(mq, msg, flags);
+    pthread_mutex_unlock(&mq->lock);
+    return ret;
+#else
+    return AVERROR(ENOSYS);
+#endif /* HAVE_THREADS */
+}
+
+int av_thread_message_queue_recv(AVThreadMessageQueue *mq,
+                                 void *msg,
+                                 unsigned flags)
+{
+#if HAVE_THREADS
+    int ret;
+
+    pthread_mutex_lock(&mq->lock);
+    ret = av_thread_message_queue_recv_locked(mq, msg, flags);
+    pthread_mutex_unlock(&mq->lock);
+    return ret;
+#else
+    return AVERROR(ENOSYS);
+#endif /* HAVE_THREADS */
+}
+
+void av_thread_message_queue_set_err_send(AVThreadMessageQueue *mq,
+                                          int err)
+{
+#if HAVE_THREADS
+    pthread_mutex_lock(&mq->lock);
+    mq->err_send = err;
+    pthread_cond_broadcast(&mq->cond_send);
+    pthread_mutex_unlock(&mq->lock);
+#endif /* HAVE_THREADS */
+}
+
+void av_thread_message_queue_set_err_recv(AVThreadMessageQueue *mq,
+                                          int err)
+{
+#if HAVE_THREADS
+    pthread_mutex_lock(&mq->lock);
+    mq->err_recv = err;
+    pthread_cond_broadcast(&mq->cond_recv);
+    pthread_mutex_unlock(&mq->lock);
+#endif /* HAVE_THREADS */
+}
+
+#if HAVE_THREADS
+static void free_func_wrap(void *arg, void *msg, int size)
+{
+    AVThreadMessageQueue *mq = arg;
+    mq->free_func(msg);
+}
+#endif
+
+void av_thread_message_flush(AVThreadMessageQueue *mq)
+{
+#if HAVE_THREADS
+    int used, off;
+    void *free_func = mq->free_func;
+
+    pthread_mutex_lock(&mq->lock);
+    used = av_fifo_size(mq->fifo);
+    if (free_func)
+        for (off = 0; off < used; off += mq->elsize)
+            av_fifo_generic_peek_at(mq->fifo, mq, off, mq->elsize, free_func_wrap);
+    av_fifo_drain(mq->fifo, used);
+    /* only the senders need to be notified since the queue is empty and there
+     * is nothing to read */
+    pthread_cond_broadcast(&mq->cond_send);
+    pthread_mutex_unlock(&mq->lock);
+#endif /* HAVE_THREADS */
+}
diff --git a/media/ffvpx/libavutil/threadmessage.h b/media/ffvpx/libavutil/threadmessage.h
new file mode 100644
index 0000000000..42ce655f36
--- /dev/null
+++ b/media/ffvpx/libavutil/threadmessage.h
@@ -0,0 +1,115 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_THREADMESSAGE_H
+#define AVUTIL_THREADMESSAGE_H
+
+typedef struct AVThreadMessageQueue AVThreadMessageQueue;
+
+typedef enum AVThreadMessageFlags {
+
+    /**
+     * Perform non-blocking operation.
+     * If this flag is set, send and recv operations are non-blocking and
+     * return AVERROR(EAGAIN) immediately if they can not proceed.
+     */
+    AV_THREAD_MESSAGE_NONBLOCK = 1,
+
+} AVThreadMessageFlags;
+
+/**
+ * Allocate a new message queue.
+ *
+ * @param mq      pointer to the message queue
+ * @param nelem   maximum number of elements in the queue
+ * @param elsize  size of each element in the queue
+ * @return  >=0 for success; <0 for error, in particular AVERROR(ENOSYS) if
+ *          lavu was built without thread support
+ */
+int av_thread_message_queue_alloc(AVThreadMessageQueue **mq,
+                                  unsigned nelem,
+                                  unsigned elsize);
+
+/**
+ * Free a message queue.
+ *
+ * The message queue must no longer be in use by another thread.
+ */
+void av_thread_message_queue_free(AVThreadMessageQueue **mq);
+
+/**
+ * Send a message on the queue.
+ */
+int av_thread_message_queue_send(AVThreadMessageQueue *mq,
+                                 void *msg,
+                                 unsigned flags);
+
+/**
+ * Receive a message from the queue.
+ */
+int av_thread_message_queue_recv(AVThreadMessageQueue *mq,
+                                 void *msg,
+                                 unsigned flags);
+
+/**
+ * Set the sending error code.
+ *
+ * If the error code is set to non-zero, av_thread_message_queue_send() will
+ * return it immediately. Conventional values, such as AVERROR_EOF or
+ * AVERROR(EAGAIN), can be used to cause the sending thread to stop or
+ * suspend its operation.
+ */
+void av_thread_message_queue_set_err_send(AVThreadMessageQueue *mq,
+                                          int err);
+
+/**
+ * Set the receiving error code.
+ *
+ * If the error code is set to non-zero, av_thread_message_queue_recv() will
+ * return it immediately when there are no longer available messages.
+ * Conventional values, such as AVERROR_EOF or AVERROR(EAGAIN), can be used
+ * to cause the receiving thread to stop or suspend its operation.
+ */
+void av_thread_message_queue_set_err_recv(AVThreadMessageQueue *mq,
+                                          int err);
+
+/**
+ * Set the optional free message callback function which will be called if an
+ * operation is removing messages from the queue.
+ */
+void av_thread_message_queue_set_free_func(AVThreadMessageQueue *mq,
+                                           void (*free_func)(void *msg));
+
+/**
+ * Return the current number of messages in the queue.
+ *
+ * @return the current number of messages or AVERROR(ENOSYS) if lavu was built
+ *         without thread support
+ */
+int av_thread_message_queue_nb_elems(AVThreadMessageQueue *mq);
+
+/**
+ * Flush the message queue
+ *
+ * This function is mostly equivalent to reading and free-ing every message
+ * except that it will be done in a single operation (no lock/unlock between
+ * reads).
+ */
+void av_thread_message_flush(AVThreadMessageQueue *mq);
+
+#endif /* AVUTIL_THREADMESSAGE_H */
diff --git a/media/ffvpx/libavutil/time.c b/media/ffvpx/libavutil/time.c
new file mode 100644
index 0000000000..80d1faf264
--- /dev/null
+++ b/media/ffvpx/libavutil/time.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2000-2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#include <time.h>
+#if HAVE_GETTIMEOFDAY
+#include <sys/time.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+
+#include "fftime.h"
+#include "error.h"
+
+int64_t av_gettime(void)
+{
+#if HAVE_GETTIMEOFDAY
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
+#elif HAVE_GETSYSTEMTIMEASFILETIME
+    FILETIME ft;
+    int64_t t;
+    GetSystemTimeAsFileTime(&ft);
+    t = (int64_t)ft.dwHighDateTime << 32 | ft.dwLowDateTime;
+    return t / 10 - 11644473600000000; /* Jan 1, 1601 */
+#else
+    return -1;
+#endif
+}
+
+int64_t av_gettime_relative(void)
+{
+#if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC)
+#ifdef __APPLE__
+    if (clock_gettime)
+#endif
+    {
+        struct timespec ts;
+        clock_gettime(CLOCK_MONOTONIC, &ts);
+        return (int64_t)ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
+    }
+#endif
+    return av_gettime() + 42 * 60 * 60 * INT64_C(1000000);
+}
+
+int av_gettime_relative_is_monotonic(void)
+{
+#if HAVE_CLOCK_GETTIME && defined(CLOCK_MONOTONIC)
+#ifdef __APPLE__
+    if (!clock_gettime)
+        return 0;
+#endif
+    return 1;
+#else
+    return 0;
+#endif
+}
+
+int av_usleep(unsigned usec)
+{
+#if HAVE_NANOSLEEP
+    struct timespec ts = { usec / 1000000, usec % 1000000 * 1000 };
+    while (nanosleep(&ts, &ts) < 0 && errno == EINTR);
+    return 0;
+#elif HAVE_USLEEP
+    return usleep(usec);
+#elif HAVE_SLEEP
+    Sleep(usec / 1000);
+    return 0;
+#else
+    return AVERROR(ENOSYS);
+#endif
+}
diff --git a/media/ffvpx/libavutil/time_internal.h b/media/ffvpx/libavutil/time_internal.h
new file mode 100644
index 0000000000..d0f007ab1c
--- /dev/null
+++ b/media/ffvpx/libavutil/time_internal.h
@@ -0,0 +1,49 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_TIME_INTERNAL_H
+#define AVUTIL_TIME_INTERNAL_H
+
+#include <time.h>
+#include "config.h"
+
+#if !HAVE_GMTIME_R && !defined(gmtime_r)
+static inline struct tm *ff_gmtime_r(const time_t* clock, struct tm *result)
+{
+    struct tm *ptr = gmtime(clock);
+    if (!ptr)
+        return NULL;
+    *result = *ptr;
+    return result;
+}
+#define gmtime_r ff_gmtime_r
+#endif
+
+#if !HAVE_LOCALTIME_R && !defined(localtime_r)
+static inline struct tm *ff_localtime_r(const time_t* clock, struct tm *result)
+{
+    struct tm *ptr = localtime(clock);
+    if (!ptr)
+        return NULL;
+    *result = *ptr;
+    return result;
+}
+#define localtime_r ff_localtime_r
+#endif
+
+#endif /* AVUTIL_TIME_INTERNAL_H */
diff --git a/media/ffvpx/libavutil/timecode.c b/media/ffvpx/libavutil/timecode.c
new file mode 100644
index 0000000000..60077ba0c0
--- /dev/null
+++ b/media/ffvpx/libavutil/timecode.c
@@ -0,0 +1,220 @@
+/*
+ * Copyright (c) 2006 Smartjog S.A.S, Baptiste Coudurier <baptiste.coudurier@gmail.com>
+ * Copyright (c) 2011-2012 Smartjog S.A.S, Clément Bœsch <clement.boesch@smartjog.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Timecode helpers
+ * @see https://en.wikipedia.org/wiki/SMPTE_time_code
+ * @see http://www.dropframetimecode.org
+ */
+
+#include <stdio.h>
+#include "timecode.h"
+#include "log.h"
+#include "error.h"
+
+int av_timecode_adjust_ntsc_framenum2(int framenum, int fps)
+{
+    /* only works for NTSC 29.97 and 59.94 */
+    int drop_frames = 0;
+    int d, m, frames_per_10mins;
+
+    if (fps == 30) {
+        drop_frames = 2;
+        frames_per_10mins = 17982;
+    } else if (fps == 60) {
+        drop_frames = 4;
+        frames_per_10mins = 35964;
+    } else
+        return framenum;
+
+    d = framenum / frames_per_10mins;
+    m = framenum % frames_per_10mins;
+
+    return framenum + 9 * drop_frames * d + drop_frames * ((m - drop_frames) / (frames_per_10mins / 10));
+}
+
+uint32_t av_timecode_get_smpte_from_framenum(const AVTimecode *tc, int framenum)
+{
+    unsigned fps = tc->fps;
+    int drop = !!(tc->flags & AV_TIMECODE_FLAG_DROPFRAME);
+    int hh, mm, ss, ff;
+
+    framenum += tc->start;
+    if (drop)
+        framenum = av_timecode_adjust_ntsc_framenum2(framenum, tc->fps);
+    ff = framenum % fps;
+    ss = framenum / fps      % 60;
+    mm = framenum / (fps*60) % 60;
+    hh = framenum / (fps*3600) % 24;
+    return 0         << 31 | // color frame flag (0: unsync mode, 1: sync mode)
+           drop      << 30 | // drop  frame flag (0: non drop,    1: drop)
+           (ff / 10) << 28 | // tens  of frames
+           (ff % 10) << 24 | // units of frames
+           0         << 23 | // PC (NTSC) or BGF0 (PAL)
+           (ss / 10) << 20 | // tens  of seconds
+           (ss % 10) << 16 | // units of seconds
+           0         << 15 | // BGF0 (NTSC) or BGF2 (PAL)
+           (mm / 10) << 12 | // tens  of minutes
+           (mm % 10) <<  8 | // units of minutes
+           0         <<  7 | // BGF2 (NTSC) or PC (PAL)
+           0         <<  6 | // BGF1
+           (hh / 10) <<  4 | // tens  of hours
+           (hh % 10);        // units of hours
+}
+
+char *av_timecode_make_string(const AVTimecode *tc, char *buf, int framenum)
+{
+    int fps = tc->fps;
+    int drop = tc->flags & AV_TIMECODE_FLAG_DROPFRAME;
+    int hh, mm, ss, ff, neg = 0;
+
+    framenum += tc->start;
+    if (drop)
+        framenum = av_timecode_adjust_ntsc_framenum2(framenum, fps);
+    if (framenum < 0) {
+        framenum = -framenum;
+        neg = tc->flags & AV_TIMECODE_FLAG_ALLOWNEGATIVE;
+    }
+    ff = framenum % fps;
+    ss = framenum / fps        % 60;
+    mm = framenum / (fps*60)   % 60;
+    hh = framenum / (fps*3600);
+    if (tc->flags & AV_TIMECODE_FLAG_24HOURSMAX)
+        hh = hh % 24;
+    snprintf(buf, AV_TIMECODE_STR_SIZE, "%s%02d:%02d:%02d%c%02d",
+             neg ? "-" : "",
+             hh, mm, ss, drop ? ';' : ':', ff);
+    return buf;
+}
+
+static unsigned bcd2uint(uint8_t bcd)
+{
+   unsigned low  = bcd & 0xf;
+   unsigned high = bcd >> 4;
+   if (low > 9 || high > 9)
+       return 0;
+   return low + 10*high;
+}
+
+char *av_timecode_make_smpte_tc_string(char *buf, uint32_t tcsmpte, int prevent_df)
+{
+    unsigned hh   = bcd2uint(tcsmpte     & 0x3f);    // 6-bit hours
+    unsigned mm   = bcd2uint(tcsmpte>>8  & 0x7f);    // 7-bit minutes
+    unsigned ss   = bcd2uint(tcsmpte>>16 & 0x7f);    // 7-bit seconds
+    unsigned ff   = bcd2uint(tcsmpte>>24 & 0x3f);    // 6-bit frames
+    unsigned drop = tcsmpte & 1<<30 && !prevent_df;  // 1-bit drop if not arbitrary bit
+    snprintf(buf, AV_TIMECODE_STR_SIZE, "%02u:%02u:%02u%c%02u",
+             hh, mm, ss, drop ? ';' : ':', ff);
+    return buf;
+}
+
+char *av_timecode_make_mpeg_tc_string(char *buf, uint32_t tc25bit)
+{
+    snprintf(buf, AV_TIMECODE_STR_SIZE,
+             "%02"PRIu32":%02"PRIu32":%02"PRIu32"%c%02"PRIu32,
+             tc25bit>>19 & 0x1f,              // 5-bit hours
+             tc25bit>>13 & 0x3f,              // 6-bit minutes
+             tc25bit>>6  & 0x3f,              // 6-bit seconds
+             tc25bit     & 1<<24 ? ';' : ':', // 1-bit drop flag
+             tc25bit     & 0x3f);             // 6-bit frames
+    return buf;
+}
+
+static int check_fps(int fps)
+{
+    int i;
+    static const int supported_fps[] = {
+        24, 25, 30, 48, 50, 60, 100, 120, 150,
+    };
+
+    for (i = 0; i < FF_ARRAY_ELEMS(supported_fps); i++)
+        if (fps == supported_fps[i])
+            return 0;
+    return -1;
+}
+
+static int check_timecode(void *log_ctx, AVTimecode *tc)
+{
+    if ((int)tc->fps <= 0) {
+        av_log(log_ctx, AV_LOG_ERROR, "Valid timecode frame rate must be specified. Minimum value is 1\n");
+        return AVERROR(EINVAL);
+    }
+    if ((tc->flags & AV_TIMECODE_FLAG_DROPFRAME) && tc->fps != 30 && tc->fps != 60) {
+        av_log(log_ctx, AV_LOG_ERROR, "Drop frame is only allowed with 30000/1001 or 60000/1001 FPS\n");
+        return AVERROR(EINVAL);
+    }
+    if (check_fps(tc->fps) < 0) {
+        av_log(log_ctx, AV_LOG_WARNING, "Using non-standard frame rate %d/%d\n",
+               tc->rate.num, tc->rate.den);
+    }
+    return 0;
+}
+
+static int fps_from_frame_rate(AVRational rate)
+{
+    if (!rate.den || !rate.num)
+        return -1;
+    return (rate.num + rate.den/2) / rate.den;
+}
+
+int av_timecode_check_frame_rate(AVRational rate)
+{
+    return check_fps(fps_from_frame_rate(rate));
+}
+
+int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx)
+{
+    memset(tc, 0, sizeof(*tc));
+    tc->start = frame_start;
+    tc->flags = flags;
+    tc->rate  = rate;
+    tc->fps   = fps_from_frame_rate(rate);
+    return check_timecode(log_ctx, tc);
+}
+
+int av_timecode_init_from_string(AVTimecode *tc, AVRational rate, const char *str, void *log_ctx)
+{
+    char c;
+    int hh, mm, ss, ff, ret;
+
+    if (sscanf(str, "%d:%d:%d%c%d", &hh, &mm, &ss, &c, &ff) != 5) {
+        av_log(log_ctx, AV_LOG_ERROR, "Unable to parse timecode, "
+                                      "syntax: hh:mm:ss[:;.]ff\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    memset(tc, 0, sizeof(*tc));
+    tc->flags = c != ':' ? AV_TIMECODE_FLAG_DROPFRAME : 0; // drop if ';', '.', ...
+    tc->rate  = rate;
+    tc->fps   = fps_from_frame_rate(rate);
+
+    ret = check_timecode(log_ctx, tc);
+    if (ret < 0)
+        return ret;
+
+    tc->start = (hh*3600 + mm*60 + ss) * tc->fps + ff;
+    if (tc->flags & AV_TIMECODE_FLAG_DROPFRAME) { /* adjust frame number */
+        int tmins = 60*hh + mm;
+        tc->start -= (tc->fps == 30 ? 2 : 4) * (tmins - tmins/10);
+    }
+    return 0;
+}
diff --git a/media/ffvpx/libavutil/timecode.h b/media/ffvpx/libavutil/timecode.h
new file mode 100644
index 0000000000..37c1361bc2
--- /dev/null
+++ b/media/ffvpx/libavutil/timecode.h
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2006 Smartjog S.A.S, Baptiste Coudurier <baptiste.coudurier@gmail.com>
+ * Copyright (c) 2011-2012 Smartjog S.A.S, Clément Bœsch <clement.boesch@smartjog.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Timecode helpers header
+ */
+
+#ifndef AVUTIL_TIMECODE_H
+#define AVUTIL_TIMECODE_H
+
+#include <stdint.h>
+#include "rational.h"
+
+#define AV_TIMECODE_STR_SIZE 23
+
+enum AVTimecodeFlag {
+    AV_TIMECODE_FLAG_DROPFRAME      = 1<<0, ///< timecode is drop frame
+    AV_TIMECODE_FLAG_24HOURSMAX     = 1<<1, ///< timecode wraps after 24 hours
+    AV_TIMECODE_FLAG_ALLOWNEGATIVE  = 1<<2, ///< negative time values are allowed
+};
+
+typedef struct {
+    int start;          ///< timecode frame start (first base frame number)
+    uint32_t flags;     ///< flags such as drop frame, +24 hours support, ...
+    AVRational rate;    ///< frame rate in rational form
+    unsigned fps;       ///< frame per second; must be consistent with the rate field
+} AVTimecode;
+
+/**
+ * Adjust frame number for NTSC drop frame time code.
+ *
+ * @param framenum frame number to adjust
+ * @param fps      frame per second, 30 or 60
+ * @return         adjusted frame number
+ * @warning        adjustment is only valid in NTSC 29.97 and 59.94
+ */
+int av_timecode_adjust_ntsc_framenum2(int framenum, int fps);
+
+/**
+ * Convert frame number to SMPTE 12M binary representation.
+ *
+ * @param tc       timecode data correctly initialized
+ * @param framenum frame number
+ * @return         the SMPTE binary representation
+ *
+ * @note Frame number adjustment is automatically done in case of drop timecode,
+ *       you do NOT have to call av_timecode_adjust_ntsc_framenum2().
+ * @note The frame number is relative to tc->start.
+ * @note Color frame (CF), binary group flags (BGF) and biphase mark polarity
+ *       correction (PC) bits are set to zero.
+ */
+uint32_t av_timecode_get_smpte_from_framenum(const AVTimecode *tc, int framenum);
+
+/**
+ * Load timecode string in buf.
+ *
+ * @param buf      destination buffer, must be at least AV_TIMECODE_STR_SIZE long
+ * @param tc       timecode data correctly initialized
+ * @param framenum frame number
+ * @return         the buf parameter
+ *
+ * @note Timecode representation can be a negative timecode and have more than
+ *       24 hours, but will only be honored if the flags are correctly set.
+ * @note The frame number is relative to tc->start.
+ */
+char *av_timecode_make_string(const AVTimecode *tc, char *buf, int framenum);
+
+/**
+ * Get the timecode string from the SMPTE timecode format.
+ *
+ * @param buf        destination buffer, must be at least AV_TIMECODE_STR_SIZE long
+ * @param tcsmpte    the 32-bit SMPTE timecode
+ * @param prevent_df prevent the use of a drop flag when it is known the DF bit
+ *                   is arbitrary
+ * @return           the buf parameter
+ */
+char *av_timecode_make_smpte_tc_string(char *buf, uint32_t tcsmpte, int prevent_df);
+
+/**
+ * Get the timecode string from the 25-bit timecode format (MPEG GOP format).
+ *
+ * @param buf     destination buffer, must be at least AV_TIMECODE_STR_SIZE long
+ * @param tc25bit the 25-bits timecode
+ * @return        the buf parameter
+ */
+char *av_timecode_make_mpeg_tc_string(char *buf, uint32_t tc25bit);
+
+/**
+ * Init a timecode struct with the passed parameters.
+ *
+ * @param log_ctx     a pointer to an arbitrary struct of which the first field
+ *                    is a pointer to an AVClass struct (used for av_log)
+ * @param tc          pointer to an allocated AVTimecode
+ * @param rate        frame rate in rational form
+ * @param flags       miscellaneous flags such as drop frame, +24 hours, ...
+ *                    (see AVTimecodeFlag)
+ * @param frame_start the first frame number
+ * @return            0 on success, AVERROR otherwise
+ */
+int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx);
+
+/**
+ * Parse timecode representation (hh:mm:ss[:;.]ff).
+ *
+ * @param log_ctx a pointer to an arbitrary struct of which the first field is a
+ *                pointer to an AVClass struct (used for av_log).
+ * @param tc      pointer to an allocated AVTimecode
+ * @param rate    frame rate in rational form
+ * @param str     timecode string which will determine the frame start
+ * @return        0 on success, AVERROR otherwise
+ */
+int av_timecode_init_from_string(AVTimecode *tc, AVRational rate, const char *str, void *log_ctx);
+
+/**
+ * Check if the timecode feature is available for the given frame rate
+ *
+ * @return 0 if supported, <0 otherwise
+ */
+int av_timecode_check_frame_rate(AVRational rate);
+
+#endif /* AVUTIL_TIMECODE_H */
diff --git a/media/ffvpx/libavutil/timer.h b/media/ffvpx/libavutil/timer.h
new file mode 100644
index 0000000000..0bb353cfce
--- /dev/null
+++ b/media/ffvpx/libavutil/timer.h
@@ -0,0 +1,141 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * high precision timer, useful to profile code
+ */
+
+#ifndef AVUTIL_TIMER_H
+#define AVUTIL_TIMER_H
+
+#include "config.h"
+
+#if CONFIG_LINUX_PERF
+# ifndef _GNU_SOURCE
+#  define _GNU_SOURCE
+# endif
+# include <unistd.h> // read(3)
+# include <sys/ioctl.h>
+# include <asm/unistd.h>
+# include <linux/perf_event.h>
+#endif
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <inttypes.h>
+
+#if HAVE_MACH_ABSOLUTE_TIME
+#include <mach/mach_time.h>
+#endif
+
+#include "log.h"
+
+#if   ARCH_AARCH64
+#   include "aarch64/timer.h"
+#elif ARCH_ARM
+#   include "arm/timer.h"
+#elif ARCH_PPC
+#   include "ppc/timer.h"
+#elif ARCH_X86
+#   include "x86/timer.h"
+#endif
+
+#if !defined(AV_READ_TIME)
+#   if HAVE_GETHRTIME
+#       define AV_READ_TIME gethrtime
+#   elif HAVE_MACH_ABSOLUTE_TIME
+#       define AV_READ_TIME mach_absolute_time
+#   endif
+#endif
+
+#ifndef FF_TIMER_UNITS
+#   define FF_TIMER_UNITS "UNITS"
+#endif
+
+#define TIMER_REPORT(id, tdiff)                                           \
+    {                                                                     \
+        static uint64_t tsum   = 0;                                       \
+        static int tcount      = 0;                                       \
+        static int tskip_count = 0;                                       \
+        static int thistogram[32] = {0};                                  \
+        thistogram[av_log2(tdiff)]++;                                     \
+        if (tcount < 2                ||                                  \
+            (tdiff) < 8 * tsum / tcount ||                                \
+            (tdiff) < 2000) {                                             \
+            tsum += (tdiff);                                              \
+            tcount++;                                                     \
+        } else                                                            \
+            tskip_count++;                                                \
+        if (((tcount + tskip_count) & (tcount + tskip_count - 1)) == 0) { \
+            int i;                                                        \
+            av_log(NULL, AV_LOG_ERROR,                                    \
+                   "%7"PRIu64" " FF_TIMER_UNITS " in %s,%8d runs,%7d skips",          \
+                   tsum * 10 / tcount, id, tcount, tskip_count);          \
+            for (i = 0; i < 32; i++)                                      \
+                av_log(NULL, AV_LOG_VERBOSE, " %2d", av_log2(2*thistogram[i]));\
+            av_log(NULL, AV_LOG_ERROR, "\n");                             \
+        }                                                                 \
+    }
+
+#if CONFIG_LINUX_PERF
+
+#define START_TIMER                                                         \
+    static int linux_perf_fd;                                               \
+    uint64_t tperf;                                                         \
+    if (!linux_perf_fd) {                                                   \
+        struct perf_event_attr attr = {                                     \
+            .type           = PERF_TYPE_HARDWARE,                           \
+            .size           = sizeof(struct perf_event_attr),               \
+            .config         = PERF_COUNT_HW_CPU_CYCLES,                     \
+            .disabled       = 1,                                            \
+            .exclude_kernel = 1,                                            \
+            .exclude_hv     = 1,                                            \
+        };                                                                  \
+        linux_perf_fd = syscall(__NR_perf_event_open, &attr,                \
+                                0, -1, -1, 0);                              \
+    }                                                                       \
+    if (linux_perf_fd == -1) {                                              \
+        av_log(NULL, AV_LOG_ERROR, "perf_event_open failed: %s\n",          \
+               av_err2str(AVERROR(errno)));                                 \
+    } else {                                                                \
+        ioctl(linux_perf_fd, PERF_EVENT_IOC_RESET, 0);                      \
+        ioctl(linux_perf_fd, PERF_EVENT_IOC_ENABLE, 0);                     \
+    }
+
+#define STOP_TIMER(id)                                                      \
+    ioctl(linux_perf_fd, PERF_EVENT_IOC_DISABLE, 0);                        \
+    read(linux_perf_fd, &tperf, sizeof(tperf));                             \
+    TIMER_REPORT(id, tperf)
+
+#elif defined(AV_READ_TIME)
+#define START_TIMER                             \
+    uint64_t tend;                              \
+    uint64_t tstart = AV_READ_TIME();           \
+
+#define STOP_TIMER(id)                                                    \
+    tend = AV_READ_TIME();                                                \
+    TIMER_REPORT(id, tend - tstart)
+#else
+#define START_TIMER
+#define STOP_TIMER(id) { }
+#endif
+
+#endif /* AVUTIL_TIMER_H */
diff --git a/media/ffvpx/libavutil/timestamp.h b/media/ffvpx/libavutil/timestamp.h
new file mode 100644
index 0000000000..e082f01b40
--- /dev/null
+++ b/media/ffvpx/libavutil/timestamp.h
@@ -0,0 +1,78 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * timestamp utils, mostly useful for debugging/logging purposes
+ */
+
+#ifndef AVUTIL_TIMESTAMP_H
+#define AVUTIL_TIMESTAMP_H
+
+#include "common.h"
+
+#if defined(__cplusplus) && !defined(__STDC_FORMAT_MACROS) && !defined(PRId64)
+#error missing -D__STDC_FORMAT_MACROS / #define __STDC_FORMAT_MACROS
+#endif
+
+#define AV_TS_MAX_STRING_SIZE 32
+
+/**
+ * Fill the provided buffer with a string containing a timestamp
+ * representation.
+ *
+ * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
+ * @param ts the timestamp to represent
+ * @return the buffer in input
+ */
+static inline char *av_ts_make_string(char *buf, int64_t ts)
+{
+    if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
+    else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%" PRId64, ts);
+    return buf;
+}
+
+/**
+ * Convenience macro, the return value should be used only directly in
+ * function arguments but never stand-alone.
+ */
+#define av_ts2str(ts) av_ts_make_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts)
+
+/**
+ * Fill the provided buffer with a string containing a timestamp time
+ * representation.
+ *
+ * @param buf a buffer with size in bytes of at least AV_TS_MAX_STRING_SIZE
+ * @param ts the timestamp to represent
+ * @param tb the timebase of the timestamp
+ * @return the buffer in input
+ */
+static inline char *av_ts_make_time_string(char *buf, int64_t ts, AVRational *tb)
+{
+    if (ts == AV_NOPTS_VALUE) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS");
+    else                      snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.6g", av_q2d(*tb) * ts);
+    return buf;
+}
+
+/**
+ * Convenience macro, the return value should be used only directly in
+ * function arguments but never stand-alone.
+ */
+#define av_ts2timestr(ts, tb) av_ts_make_time_string((char[AV_TS_MAX_STRING_SIZE]){0}, ts, tb)
+
+#endif /* AVUTIL_TIMESTAMP_H */
diff --git a/media/ffvpx/libavutil/utils.c b/media/ffvpx/libavutil/utils.c
new file mode 100644
index 0000000000..230081ea47
--- /dev/null
+++ b/media/ffvpx/libavutil/utils.c
@@ -0,0 +1,160 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "avutil.h"
+#include "avassert.h"
+#include "samplefmt.h"
+#include "internal.h"
+
+/**
+ * @file
+ * various utility functions
+ */
+
+#include "libavutil/ffversion.h"
+const char av_util_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
+
+const char *av_version_info(void)
+{
+    return FFMPEG_VERSION;
+}
+
+unsigned avutil_version(void)
+{
+    static int checks_done;
+    if (checks_done)
+        return LIBAVUTIL_VERSION_INT;
+
+    av_assert0(AV_SAMPLE_FMT_DBLP == 9);
+    av_assert0(AVMEDIA_TYPE_ATTACHMENT == 4);
+    av_assert0(AV_PICTURE_TYPE_BI == 7);
+    av_assert0(LIBAVUTIL_VERSION_MICRO >= 100);
+    av_assert0(HAVE_MMX2 == HAVE_MMXEXT);
+
+    av_assert0(((size_t)-1) > 0); // C guarantees this but if false on a platform we care about revert at least b284e1ffe343d6697fb950d1ee517bafda8a9844
+
+    if (av_sat_dadd32(1, 2) != 5) {
+        av_log(NULL, AV_LOG_FATAL, "Libavutil has been built with a broken binutils, please upgrade binutils and rebuild\n");
+        abort();
+    }
+
+    if (llrint(1LL<<60) != 1LL<<60) {
+        av_log(NULL, AV_LOG_ERROR, "Libavutil has been linked to a broken llrint()\n");
+    }
+
+    checks_done = 1;
+    return LIBAVUTIL_VERSION_INT;
+}
+
+const char *avutil_configuration(void)
+{
+    return FFMPEG_CONFIGURATION;
+}
+
+const char *avutil_license(void)
+{
+#define LICENSE_PREFIX "libavutil license: "
+    return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
+}
+
+const char *av_get_media_type_string(enum AVMediaType media_type)
+{
+    switch (media_type) {
+    case AVMEDIA_TYPE_VIDEO:      return "video";
+    case AVMEDIA_TYPE_AUDIO:      return "audio";
+    case AVMEDIA_TYPE_DATA:       return "data";
+    case AVMEDIA_TYPE_SUBTITLE:   return "subtitle";
+    case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
+    default:                      return NULL;
+    }
+}
+
+char av_get_picture_type_char(enum AVPictureType pict_type)
+{
+    switch (pict_type) {
+    case AV_PICTURE_TYPE_I:  return 'I';
+    case AV_PICTURE_TYPE_P:  return 'P';
+    case AV_PICTURE_TYPE_B:  return 'B';
+    case AV_PICTURE_TYPE_S:  return 'S';
+    case AV_PICTURE_TYPE_SI: return 'i';
+    case AV_PICTURE_TYPE_SP: return 'p';
+    case AV_PICTURE_TYPE_BI: return 'b';
+    default:                 return '?';
+    }
+}
+
+unsigned av_int_list_length_for_size(unsigned elsize,
+                                     const void *list, uint64_t term)
+{
+    unsigned i;
+
+    if (!list)
+        return 0;
+#define LIST_LENGTH(type) \
+    { type t = term, *l = (type *)list; for (i = 0; l[i] != t; i++); }
+    switch (elsize) {
+    case 1: LIST_LENGTH(uint8_t);  break;
+    case 2: LIST_LENGTH(uint16_t); break;
+    case 4: LIST_LENGTH(uint32_t); break;
+    case 8: LIST_LENGTH(uint64_t); break;
+    default: av_assert0(!"valid element size");
+    }
+    return i;
+}
+
+char *av_fourcc_make_string(char *buf, uint32_t fourcc)
+{
+    int i;
+    char *orig_buf = buf;
+    size_t buf_size = AV_FOURCC_MAX_STRING_SIZE;
+
+    for (i = 0; i < 4; i++) {
+        const int c = fourcc & 0xff;
+        const int print_chr = (c >= '0' && c <= '9') ||
+                              (c >= 'a' && c <= 'z') ||
+                              (c >= 'A' && c <= 'Z') ||
+                              (c && strchr(". -_", c));
+        const int len = snprintf(buf, buf_size, print_chr ? "%c" : "[%d]", c);
+        if (len < 0)
+            break;
+        buf += len;
+        buf_size = buf_size > len ? buf_size - len : 0;
+        fourcc >>= 8;
+    }
+
+    return orig_buf;
+}
+
+AVRational av_get_time_base_q(void)
+{
+    return (AVRational){1, AV_TIME_BASE};
+}
+
+void av_assert0_fpu(void) {
+#if HAVE_MMX_INLINE
+    uint16_t state[14];
+     __asm__ volatile (
+        "fstenv %0 \n\t"
+        : "+m" (state)
+        :
+        : "memory"
+    );
+    av_assert0((state[4] & 3) == 3);
+#endif
+}
diff --git a/media/ffvpx/libavutil/version.h b/media/ffvpx/libavutil/version.h
new file mode 100644
index 0000000000..24ca8ab7db
--- /dev/null
+++ b/media/ffvpx/libavutil/version.h
@@ -0,0 +1,139 @@
+/*
+ * copyright (c) 2003 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * @ingroup lavu
+ * Libavutil version macros
+ */
+
+#ifndef AVUTIL_VERSION_H
+#define AVUTIL_VERSION_H
+
+#include "macros.h"
+
+/**
+ * @addtogroup version_utils
+ *
+ * Useful to check and match library version in order to maintain
+ * backward compatibility.
+ *
+ * The FFmpeg libraries follow a versioning sheme very similar to
+ * Semantic Versioning (http://semver.org/)
+ * The difference is that the component called PATCH is called MICRO in FFmpeg
+ * and its value is reset to 100 instead of 0 to keep it above or equal to 100.
+ * Also we do not increase MICRO for every bugfix or change in git master.
+ *
+ * Prior to FFmpeg 3.2 point releases did not change any lib version number to
+ * avoid aliassing different git master checkouts.
+ * Starting with FFmpeg 3.2, the released library versions will occupy
+ * a separate MAJOR.MINOR that is not used on the master development branch.
+ * That is if we branch a release of master 55.10.123 we will bump to 55.11.100
+ * for the release and master will continue at 55.12.100 after it. Each new
+ * point release will then bump the MICRO improving the usefulness of the lib
+ * versions.
+ *
+ * @{
+ */
+
+#define AV_VERSION_INT(a, b, c) ((a)<<16 | (b)<<8 | (c))
+#define AV_VERSION_DOT(a, b, c) a ##.## b ##.## c
+#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
+
+/**
+ * Extract version components from the full ::AV_VERSION_INT int as returned
+ * by functions like ::avformat_version() and ::avcodec_version()
+ */
+#define AV_VERSION_MAJOR(a) ((a) >> 16)
+#define AV_VERSION_MINOR(a) (((a) & 0x00FF00) >> 8)
+#define AV_VERSION_MICRO(a) ((a) & 0xFF)
+
+/**
+ * @}
+ */
+
+/**
+ * @defgroup lavu_ver Version and Build diagnostics
+ *
+ * Macros and function useful to check at compiletime and at runtime
+ * which version of libavutil is in use.
+ *
+ * @{
+ */
+
+#define LIBAVUTIL_VERSION_MAJOR  56
+#define LIBAVUTIL_VERSION_MINOR  31
+#define LIBAVUTIL_VERSION_MICRO 100
+
+#define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
+                                               LIBAVUTIL_VERSION_MINOR, \
+                                               LIBAVUTIL_VERSION_MICRO)
+#define LIBAVUTIL_VERSION       AV_VERSION(LIBAVUTIL_VERSION_MAJOR,     \
+                                           LIBAVUTIL_VERSION_MINOR,     \
+                                           LIBAVUTIL_VERSION_MICRO)
+#define LIBAVUTIL_BUILD         LIBAVUTIL_VERSION_INT
+
+#define LIBAVUTIL_IDENT         "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION)
+
+/**
+ * @defgroup lavu_depr_guards Deprecation Guards
+ * FF_API_* defines may be placed below to indicate public API that will be
+ * dropped at a future version bump. The defines themselves are not part of
+ * the public API and may change, break or disappear at any time.
+ *
+ * @note, when bumping the major version it is recommended to manually
+ * disable each FF_API_* in its own commit instead of disabling them all
+ * at once through the bump. This improves the git bisect-ability of the change.
+ *
+ * @{
+ */
+
+#ifndef FF_API_VAAPI
+#define FF_API_VAAPI                    (LIBAVUTIL_VERSION_MAJOR < 57)
+#endif
+#ifndef FF_API_FRAME_QP
+#define FF_API_FRAME_QP                 (LIBAVUTIL_VERSION_MAJOR < 57)
+#endif
+#ifndef FF_API_PLUS1_MINUS1
+#define FF_API_PLUS1_MINUS1             (LIBAVUTIL_VERSION_MAJOR < 57)
+#endif
+#ifndef FF_API_ERROR_FRAME
+#define FF_API_ERROR_FRAME              (LIBAVUTIL_VERSION_MAJOR < 57)
+#endif
+#ifndef FF_API_PKT_PTS
+#define FF_API_PKT_PTS                  (LIBAVUTIL_VERSION_MAJOR < 57)
+#endif
+#ifndef FF_API_CRYPTO_SIZE_T
+#define FF_API_CRYPTO_SIZE_T            (LIBAVUTIL_VERSION_MAJOR < 57)
+#endif
+#ifndef FF_API_FRAME_GET_SET
+#define FF_API_FRAME_GET_SET            (LIBAVUTIL_VERSION_MAJOR < 57)
+#endif
+#ifndef FF_API_PSEUDOPAL
+#define FF_API_PSEUDOPAL                (LIBAVUTIL_VERSION_MAJOR < 57)
+#endif
+
+
+/**
+ * @}
+ * @}
+ */
+
+#endif /* AVUTIL_VERSION_H */
diff --git a/media/ffvpx/libavutil/x86/asm.h b/media/ffvpx/libavutil/x86/asm.h
new file mode 100644
index 0000000000..9bff42d628
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/asm.h
@@ -0,0 +1,154 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_X86_ASM_H
+#define AVUTIL_X86_ASM_H
+
+#include <stdint.h>
+#include "config.h"
+
+typedef struct xmm_reg { uint64_t a, b; } xmm_reg;
+typedef struct ymm_reg { uint64_t a, b, c, d; } ymm_reg;
+
+#if ARCH_X86_64
+#    define FF_OPSIZE "q"
+#    define FF_REG_a "rax"
+#    define FF_REG_b "rbx"
+#    define FF_REG_c "rcx"
+#    define FF_REG_d "rdx"
+#    define FF_REG_D "rdi"
+#    define FF_REG_S "rsi"
+#    define FF_PTR_SIZE "8"
+typedef int64_t x86_reg;
+
+/* FF_REG_SP is defined in Solaris sys headers, so use FF_REG_sp */
+#    define FF_REG_sp "rsp"
+#    define FF_REG_BP "rbp"
+#    define FF_REGBP   rbp
+#    define FF_REGa    rax
+#    define FF_REGb    rbx
+#    define FF_REGc    rcx
+#    define FF_REGd    rdx
+#    define FF_REGSP   rsp
+
+#elif ARCH_X86_32
+
+#    define FF_OPSIZE "l"
+#    define FF_REG_a "eax"
+#    define FF_REG_b "ebx"
+#    define FF_REG_c "ecx"
+#    define FF_REG_d "edx"
+#    define FF_REG_D "edi"
+#    define FF_REG_S "esi"
+#    define FF_PTR_SIZE "4"
+typedef int32_t x86_reg;
+
+#    define FF_REG_sp "esp"
+#    define FF_REG_BP "ebp"
+#    define FF_REGBP   ebp
+#    define FF_REGa    eax
+#    define FF_REGb    ebx
+#    define FF_REGc    ecx
+#    define FF_REGd    edx
+#    define FF_REGSP   esp
+#else
+typedef int x86_reg;
+#endif
+
+#define HAVE_7REGS (ARCH_X86_64 || (HAVE_EBX_AVAILABLE && HAVE_EBP_AVAILABLE))
+#define HAVE_6REGS (ARCH_X86_64 || (HAVE_EBX_AVAILABLE || HAVE_EBP_AVAILABLE))
+
+#if ARCH_X86_64 && defined(PIC)
+#    define BROKEN_RELOCATIONS 1
+#endif
+
+/*
+ * If gcc is not set to support sse (-msse) it will not accept xmm registers
+ * in the clobber list for inline asm. XMM_CLOBBERS takes a list of xmm
+ * registers to be marked as clobbered and evaluates to nothing if they are
+ * not supported, or to the list itself if they are supported. Since a clobber
+ * list may not be empty, XMM_CLOBBERS_ONLY should be used if the xmm
+ * registers are the only in the clobber list.
+ * For example a list with "eax" and "xmm0" as clobbers should become:
+ * : XMM_CLOBBERS("xmm0",) "eax"
+ * and a list with only "xmm0" should become:
+ * XMM_CLOBBERS_ONLY("xmm0")
+ */
+#if HAVE_XMM_CLOBBERS
+#    define XMM_CLOBBERS(...)        __VA_ARGS__
+#    define XMM_CLOBBERS_ONLY(...) : __VA_ARGS__
+#else
+#    define XMM_CLOBBERS(...)
+#    define XMM_CLOBBERS_ONLY(...)
+#endif
+
+/* Use to export labels from asm. */
+#define LABEL_MANGLE(a) EXTERN_PREFIX #a
+
+// Use rip-relative addressing if compiling PIC code on x86-64.
+#if ARCH_X86_64 && defined(PIC)
+#    define LOCAL_MANGLE(a) #a "(%%rip)"
+#else
+#    define LOCAL_MANGLE(a) #a
+#endif
+
+#if HAVE_INLINE_ASM_DIRECT_SYMBOL_REFS
+#   define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
+#   define NAMED_CONSTRAINTS_ADD(...)
+#   define NAMED_CONSTRAINTS(...)
+#   define NAMED_CONSTRAINTS_ARRAY_ADD(...)
+#   define NAMED_CONSTRAINTS_ARRAY(...)
+#else
+    /* When direct symbol references are used in code passed to a compiler that does not support them
+     *  then these references need to be converted to named asm constraints instead.
+     * Instead of returning a direct symbol MANGLE now returns a named constraint for that specific symbol.
+     * In order for this to work there must also be a corresponding entry in the asm-interface. To add this
+     *  entry use the macro NAMED_CONSTRAINTS() and pass in a list of each symbol reference used in the
+     *  corresponding block of code. (e.g. NAMED_CONSTRAINTS(var1,var2,var3) where var1 is the first symbol etc. ).
+     * If there are already existing constraints then use NAMED_CONSTRAINTS_ADD to add to the existing constraint list.
+     */
+#   define MANGLE(a) "%["#a"]"
+    // Intel/MSVC does not correctly expand va-args so we need a rather ugly hack in order to get it to work
+#   define FE_0(P,X) P(X)
+#   define FE_1(P,X,X1) P(X), FE_0(P,X1)
+#   define FE_2(P,X,X1,X2) P(X), FE_1(P,X1,X2)
+#   define FE_3(P,X,X1,X2,X3) P(X), FE_2(P,X1,X2,X3)
+#   define FE_4(P,X,X1,X2,X3,X4) P(X), FE_3(P,X1,X2,X3,X4)
+#   define FE_5(P,X,X1,X2,X3,X4,X5) P(X), FE_4(P,X1,X2,X3,X4,X5)
+#   define FE_6(P,X,X1,X2,X3,X4,X5,X6) P(X), FE_5(P,X1,X2,X3,X4,X5,X6)
+#   define FE_7(P,X,X1,X2,X3,X4,X5,X6,X7) P(X), FE_6(P,X1,X2,X3,X4,X5,X6,X7)
+#   define FE_8(P,X,X1,X2,X3,X4,X5,X6,X7,X8) P(X), FE_7(P,X1,X2,X3,X4,X5,X6,X7,X8)
+#   define FE_9(P,X,X1,X2,X3,X4,X5,X6,X7,X8,X9) P(X), FE_8(P,X1,X2,X3,X4,X5,X6,X7,X8,X9)
+#   define GET_FE_IMPL(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,NAME,...) NAME
+#   define GET_FE(A) GET_FE_IMPL A
+#   define GET_FE_GLUE(x, y) x y
+#   define FOR_EACH_VA(P,...) GET_FE_GLUE(GET_FE((__VA_ARGS__,FE_9,FE_8,FE_7,FE_6,FE_5,FE_4,FE_3,FE_2,FE_1,FE_0)), (P,__VA_ARGS__))
+#   define NAME_CONSTRAINT(x) [x] "m"(x)
+    // Parameters are a list of each symbol reference required
+#   define NAMED_CONSTRAINTS_ADD(...) , FOR_EACH_VA(NAME_CONSTRAINT,__VA_ARGS__)
+    // Same but without comma for when there are no previously defined constraints
+#   define NAMED_CONSTRAINTS(...) FOR_EACH_VA(NAME_CONSTRAINT,__VA_ARGS__)
+    // Same as above NAMED_CONSTRAINTS except used for passing arrays/pointers instead of normal variables
+#   define NAME_CONSTRAINT_ARRAY(x) [x] "m"(*x)
+#   define NAMED_CONSTRAINTS_ARRAY_ADD(...) , FOR_EACH_VA(NAME_CONSTRAINT_ARRAY,__VA_ARGS__)
+#   define NAMED_CONSTRAINTS_ARRAY(...) FOR_EACH_VA(NAME_CONSTRAINT_ARRAY,__VA_ARGS__)
+#endif
+
+#endif /* AVUTIL_X86_ASM_H */
diff --git a/media/ffvpx/libavutil/x86/bswap.h b/media/ffvpx/libavutil/x86/bswap.h
new file mode 100644
index 0000000000..ffa59e4c82
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/bswap.h
@@ -0,0 +1,87 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * byte swapping routines
+ */
+
+#ifndef AVUTIL_X86_BSWAP_H
+#define AVUTIL_X86_BSWAP_H
+
+#include <stdint.h>
+#if defined(_MSC_VER)
+#include <intrin.h>
+#endif
+#include "config.h"
+#include "libavutil/attributes.h"
+
+#if defined(_MSC_VER)
+
+#define av_bswap16 av_bswap16
+static av_always_inline av_const uint16_t av_bswap16(uint16_t x)
+{
+    return _rotr16(x, 8);
+}
+
+#define av_bswap32 av_bswap32
+static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
+{
+    return _byteswap_ulong(x);
+}
+
+#if ARCH_X86_64
+#define av_bswap64 av_bswap64
+static inline uint64_t av_const av_bswap64(uint64_t x)
+{
+    return _byteswap_uint64(x);
+}
+#endif
+
+
+#elif HAVE_INLINE_ASM
+
+#if AV_GCC_VERSION_AT_MOST(4,0)
+#define av_bswap16 av_bswap16
+static av_always_inline av_const unsigned av_bswap16(unsigned x)
+{
+    __asm__("rorw $8, %w0" : "+r"(x));
+    return x;
+}
+#endif /* AV_GCC_VERSION_AT_MOST(4,0) */
+
+#if AV_GCC_VERSION_AT_MOST(4,4) || defined(__INTEL_COMPILER)
+#define av_bswap32 av_bswap32
+static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
+{
+    __asm__("bswap   %0" : "+r" (x));
+    return x;
+}
+
+#if ARCH_X86_64
+#define av_bswap64 av_bswap64
+static inline uint64_t av_const av_bswap64(uint64_t x)
+{
+    __asm__("bswap  %0": "=r" (x) : "0" (x));
+    return x;
+}
+#endif
+#endif /* AV_GCC_VERSION_AT_MOST(4,4) */
+
+#endif /* HAVE_INLINE_ASM */
+#endif /* AVUTIL_X86_BSWAP_H */
diff --git a/media/ffvpx/libavutil/x86/cpu.c b/media/ffvpx/libavutil/x86/cpu.c
new file mode 100644
index 0000000000..bcd41a50a2
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/cpu.c
@@ -0,0 +1,272 @@
+/*
+ * CPU detection code, extracted from mmx.h
+ * (c)1997-99 by H. Dietz and R. Fisher
+ * Converted to C and improved by Fabrice Bellard.
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "libavutil/x86/asm.h"
+#include "libavutil/x86/cpu.h"
+#include "libavutil/cpu.h"
+#include "libavutil/cpu_internal.h"
+
+#if HAVE_X86ASM
+
+#define cpuid(index, eax, ebx, ecx, edx)        \
+    ff_cpu_cpuid(index, &eax, &ebx, &ecx, &edx)
+
+#define xgetbv(index, eax, edx)                 \
+    ff_cpu_xgetbv(index, &eax, &edx)
+
+#elif HAVE_INLINE_ASM
+
+/* ebx saving is necessary for PIC. gcc seems unable to see it alone */
+#define cpuid(index, eax, ebx, ecx, edx)                        \
+    __asm__ volatile (                                          \
+        "mov    %%"FF_REG_b", %%"FF_REG_S" \n\t"                \
+        "cpuid                       \n\t"                      \
+        "xchg   %%"FF_REG_b", %%"FF_REG_S                       \
+        : "=a" (eax), "=S" (ebx), "=c" (ecx), "=d" (edx)        \
+        : "0" (index), "2"(0))
+
+#define xgetbv(index, eax, edx)                                 \
+    __asm__ (".byte 0x0f, 0x01, 0xd0" : "=a"(eax), "=d"(edx) : "c" (index))
+
+#define get_eflags(x)                           \
+    __asm__ volatile ("pushfl     \n"           \
+                      "pop    %0  \n"           \
+                      : "=r"(x))
+
+#define set_eflags(x)                           \
+    __asm__ volatile ("push    %0 \n"           \
+                      "popfl      \n"           \
+                      :: "r"(x))
+
+#endif /* HAVE_INLINE_ASM */
+
+#if ARCH_X86_64
+
+#define cpuid_test() 1
+
+#elif HAVE_X86ASM
+
+#define cpuid_test ff_cpu_cpuid_test
+
+#elif HAVE_INLINE_ASM
+
+static int cpuid_test(void)
+{
+    x86_reg a, c;
+
+    /* Check if CPUID is supported by attempting to toggle the ID bit in
+     * the EFLAGS register. */
+    get_eflags(a);
+    set_eflags(a ^ 0x200000);
+    get_eflags(c);
+
+    return a != c;
+}
+#endif
+
+/* Function to test if multimedia instructions are supported...  */
+int ff_get_cpu_flags_x86(void)
+{
+    int rval = 0;
+
+#ifdef cpuid
+
+    int eax, ebx, ecx, edx;
+    int max_std_level, max_ext_level, std_caps = 0, ext_caps = 0;
+    int family = 0, model = 0;
+    union { int i[3]; char c[12]; } vendor;
+    int xcr0_lo = 0, xcr0_hi = 0;
+
+    if (!cpuid_test())
+        return 0; /* CPUID not supported */
+
+    cpuid(0, max_std_level, vendor.i[0], vendor.i[2], vendor.i[1]);
+
+    if (max_std_level >= 1) {
+        cpuid(1, eax, ebx, ecx, std_caps);
+        family = ((eax >> 8) & 0xf) + ((eax >> 20) & 0xff);
+        model  = ((eax >> 4) & 0xf) + ((eax >> 12) & 0xf0);
+        if (std_caps & (1 << 15))
+            rval |= AV_CPU_FLAG_CMOV;
+        if (std_caps & (1 << 23))
+            rval |= AV_CPU_FLAG_MMX;
+        if (std_caps & (1 << 25))
+            rval |= AV_CPU_FLAG_MMXEXT;
+#if HAVE_SSE
+        if (std_caps & (1 << 25))
+            rval |= AV_CPU_FLAG_SSE;
+        if (std_caps & (1 << 26))
+            rval |= AV_CPU_FLAG_SSE2;
+        if (ecx & 1)
+            rval |= AV_CPU_FLAG_SSE3;
+        if (ecx & 0x00000200 )
+            rval |= AV_CPU_FLAG_SSSE3;
+        if (ecx & 0x00080000 )
+            rval |= AV_CPU_FLAG_SSE4;
+        if (ecx & 0x00100000 )
+            rval |= AV_CPU_FLAG_SSE42;
+        if (ecx & 0x02000000 )
+            rval |= AV_CPU_FLAG_AESNI;
+#if HAVE_AVX
+        /* Check OXSAVE and AVX bits */
+        if ((ecx & 0x18000000) == 0x18000000) {
+            /* Check for OS support */
+            xgetbv(0, xcr0_lo, xcr0_hi);
+            if ((xcr0_lo & 0x6) == 0x6) {
+                rval |= AV_CPU_FLAG_AVX;
+                if (ecx & 0x00001000)
+                    rval |= AV_CPU_FLAG_FMA3;
+            }
+        }
+#endif /* HAVE_AVX */
+#endif /* HAVE_SSE */
+    }
+    if (max_std_level >= 7) {
+        cpuid(7, eax, ebx, ecx, edx);
+#if HAVE_AVX2
+        if ((rval & AV_CPU_FLAG_AVX) && (ebx & 0x00000020))
+            rval |= AV_CPU_FLAG_AVX2;
+#if HAVE_AVX512 /* F, CD, BW, DQ, VL */
+        if ((xcr0_lo & 0xe0) == 0xe0) { /* OPMASK/ZMM state */
+            if ((rval & AV_CPU_FLAG_AVX2) && (ebx & 0xd0030000) == 0xd0030000)
+                rval |= AV_CPU_FLAG_AVX512;
+
+        }
+#endif /* HAVE_AVX512 */
+#endif /* HAVE_AVX2 */
+        /* BMI1/2 don't need OS support */
+        if (ebx & 0x00000008) {
+            rval |= AV_CPU_FLAG_BMI1;
+            if (ebx & 0x00000100)
+                rval |= AV_CPU_FLAG_BMI2;
+        }
+    }
+
+    cpuid(0x80000000, max_ext_level, ebx, ecx, edx);
+
+    if (max_ext_level >= 0x80000001) {
+        cpuid(0x80000001, eax, ebx, ecx, ext_caps);
+        if (ext_caps & (1U << 31))
+            rval |= AV_CPU_FLAG_3DNOW;
+        if (ext_caps & (1 << 30))
+            rval |= AV_CPU_FLAG_3DNOWEXT;
+        if (ext_caps & (1 << 23))
+            rval |= AV_CPU_FLAG_MMX;
+        if (ext_caps & (1 << 22))
+            rval |= AV_CPU_FLAG_MMXEXT;
+
+        if (!strncmp(vendor.c, "AuthenticAMD", 12)) {
+        /* Allow for selectively disabling SSE2 functions on AMD processors
+           with SSE2 support but not SSE4a. This includes Athlon64, some
+           Opteron, and some Sempron processors. MMX, SSE, or 3DNow! are faster
+           than SSE2 often enough to utilize this special-case flag.
+           AV_CPU_FLAG_SSE2 and AV_CPU_FLAG_SSE2SLOW are both set in this case
+           so that SSE2 is used unless explicitly disabled by checking
+           AV_CPU_FLAG_SSE2SLOW. */
+            if (rval & AV_CPU_FLAG_SSE2 && !(ecx & 0x00000040))
+                rval |= AV_CPU_FLAG_SSE2SLOW;
+
+        /* Similar to the above but for AVX functions on AMD processors.
+           This is necessary only for functions using YMM registers on Bulldozer
+           and Jaguar based CPUs as they lack 256-bit execution units. SSE/AVX
+           functions using XMM registers are always faster on them.
+           AV_CPU_FLAG_AVX and AV_CPU_FLAG_AVXSLOW are both set so that AVX is
+           used unless explicitly disabled by checking AV_CPU_FLAG_AVXSLOW. */
+            if ((family == 0x15 || family == 0x16) && (rval & AV_CPU_FLAG_AVX))
+                rval |= AV_CPU_FLAG_AVXSLOW;
+        }
+
+        /* XOP and FMA4 use the AVX instruction coding scheme, so they can't be
+         * used unless the OS has AVX support. */
+        if (rval & AV_CPU_FLAG_AVX) {
+            if (ecx & 0x00000800)
+                rval |= AV_CPU_FLAG_XOP;
+            if (ecx & 0x00010000)
+                rval |= AV_CPU_FLAG_FMA4;
+        }
+    }
+
+    if (!strncmp(vendor.c, "GenuineIntel", 12)) {
+        if (family == 6 && (model == 9 || model == 13 || model == 14)) {
+            /* 6/9 (pentium-m "banias"), 6/13 (pentium-m "dothan"), and
+             * 6/14 (core1 "yonah") theoretically support sse2, but it's
+             * usually slower than mmx, so let's just pretend they don't.
+             * AV_CPU_FLAG_SSE2 is disabled and AV_CPU_FLAG_SSE2SLOW is
+             * enabled so that SSE2 is not used unless explicitly enabled
+             * by checking AV_CPU_FLAG_SSE2SLOW. The same situation
+             * applies for AV_CPU_FLAG_SSE3 and AV_CPU_FLAG_SSE3SLOW. */
+            if (rval & AV_CPU_FLAG_SSE2)
+                rval ^= AV_CPU_FLAG_SSE2SLOW | AV_CPU_FLAG_SSE2;
+            if (rval & AV_CPU_FLAG_SSE3)
+                rval ^= AV_CPU_FLAG_SSE3SLOW | AV_CPU_FLAG_SSE3;
+        }
+        /* The Atom processor has SSSE3 support, which is useful in many cases,
+         * but sometimes the SSSE3 version is slower than the SSE2 equivalent
+         * on the Atom, but is generally faster on other processors supporting
+         * SSSE3. This flag allows for selectively disabling certain SSSE3
+         * functions on the Atom. */
+        if (family == 6 && model == 28)
+            rval |= AV_CPU_FLAG_ATOM;
+
+        /* Conroe has a slow shuffle unit. Check the model number to ensure not
+         * to include crippled low-end Penryns and Nehalems that lack SSE4. */
+        if ((rval & AV_CPU_FLAG_SSSE3) && !(rval & AV_CPU_FLAG_SSE4) &&
+            family == 6 && model < 23)
+            rval |= AV_CPU_FLAG_SSSE3SLOW;
+    }
+
+#endif /* cpuid */
+
+    return rval;
+}
+
+size_t ff_get_cpu_max_align_x86(void)
+{
+    int flags = av_get_cpu_flags();
+
+    if (flags & AV_CPU_FLAG_AVX512)
+        return 64;
+    if (flags & (AV_CPU_FLAG_AVX2      |
+                 AV_CPU_FLAG_AVX       |
+                 AV_CPU_FLAG_XOP       |
+                 AV_CPU_FLAG_FMA4      |
+                 AV_CPU_FLAG_FMA3      |
+                 AV_CPU_FLAG_AVXSLOW))
+        return 32;
+    if (flags & (AV_CPU_FLAG_AESNI     |
+                 AV_CPU_FLAG_SSE42     |
+                 AV_CPU_FLAG_SSE4      |
+                 AV_CPU_FLAG_SSSE3     |
+                 AV_CPU_FLAG_SSE3      |
+                 AV_CPU_FLAG_SSE2      |
+                 AV_CPU_FLAG_SSE       |
+                 AV_CPU_FLAG_ATOM      |
+                 AV_CPU_FLAG_SSSE3SLOW |
+                 AV_CPU_FLAG_SSE3SLOW  |
+                 AV_CPU_FLAG_SSE2SLOW))
+        return 16;
+
+    return 8;
+}
diff --git a/media/ffvpx/libavutil/x86/cpu.h b/media/ffvpx/libavutil/x86/cpu.h
new file mode 100644
index 0000000000..937c697fa0
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/cpu.h
@@ -0,0 +1,113 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_X86_CPU_H
+#define AVUTIL_X86_CPU_H
+
+#include "libavutil/cpu.h"
+#include "libavutil/cpu_internal.h"
+
+#define AV_CPU_FLAG_AMD3DNOW    AV_CPU_FLAG_3DNOW
+#define AV_CPU_FLAG_AMD3DNOWEXT AV_CPU_FLAG_3DNOWEXT
+
+#define X86_AMD3DNOW(flags)         CPUEXT(flags, AMD3DNOW)
+#define X86_AMD3DNOWEXT(flags)      CPUEXT(flags, AMD3DNOWEXT)
+#define X86_MMX(flags)              CPUEXT(flags, MMX)
+#define X86_MMXEXT(flags)           CPUEXT(flags, MMXEXT)
+#define X86_SSE(flags)              CPUEXT(flags, SSE)
+#define X86_SSE2(flags)             CPUEXT(flags, SSE2)
+#define X86_SSE2_FAST(flags)        CPUEXT_FAST(flags, SSE2)
+#define X86_SSE2_SLOW(flags)        CPUEXT_SLOW(flags, SSE2)
+#define X86_SSE3(flags)             CPUEXT(flags, SSE3)
+#define X86_SSE3_FAST(flags)        CPUEXT_FAST(flags, SSE3)
+#define X86_SSE3_SLOW(flags)        CPUEXT_SLOW(flags, SSE3)
+#define X86_SSSE3(flags)            CPUEXT(flags, SSSE3)
+#define X86_SSSE3_FAST(flags)       CPUEXT_FAST(flags, SSSE3)
+#define X86_SSSE3_SLOW(flags)       CPUEXT_SLOW(flags, SSSE3)
+#define X86_SSE4(flags)             CPUEXT(flags, SSE4)
+#define X86_SSE42(flags)            CPUEXT(flags, SSE42)
+#define X86_AVX(flags)              CPUEXT(flags, AVX)
+#define X86_AVX_FAST(flags)         CPUEXT_FAST(flags, AVX)
+#define X86_AVX_SLOW(flags)         CPUEXT_SLOW(flags, AVX)
+#define X86_XOP(flags)              CPUEXT(flags, XOP)
+#define X86_FMA3(flags)             CPUEXT(flags, FMA3)
+#define X86_FMA4(flags)             CPUEXT(flags, FMA4)
+#define X86_AVX2(flags)             CPUEXT(flags, AVX2)
+#define X86_AESNI(flags)            CPUEXT(flags, AESNI)
+#define X86_AVX512(flags)           CPUEXT(flags, AVX512)
+
+#define EXTERNAL_AMD3DNOW(flags)    CPUEXT_SUFFIX(flags, _EXTERNAL, AMD3DNOW)
+#define EXTERNAL_AMD3DNOWEXT(flags) CPUEXT_SUFFIX(flags, _EXTERNAL, AMD3DNOWEXT)
+#define EXTERNAL_MMX(flags)         CPUEXT_SUFFIX(flags, _EXTERNAL, MMX)
+#define EXTERNAL_MMXEXT(flags)      CPUEXT_SUFFIX(flags, _EXTERNAL, MMXEXT)
+#define EXTERNAL_SSE(flags)         CPUEXT_SUFFIX(flags, _EXTERNAL, SSE)
+#define EXTERNAL_SSE2(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, SSE2)
+#define EXTERNAL_SSE2_FAST(flags)   CPUEXT_SUFFIX_FAST(flags, _EXTERNAL, SSE2)
+#define EXTERNAL_SSE2_SLOW(flags)   CPUEXT_SUFFIX_SLOW(flags, _EXTERNAL, SSE2)
+#define EXTERNAL_SSE3(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, SSE3)
+#define EXTERNAL_SSE3_FAST(flags)   CPUEXT_SUFFIX_FAST(flags, _EXTERNAL, SSE3)
+#define EXTERNAL_SSE3_SLOW(flags)   CPUEXT_SUFFIX_SLOW(flags, _EXTERNAL, SSE3)
+#define EXTERNAL_SSSE3(flags)       CPUEXT_SUFFIX(flags, _EXTERNAL, SSSE3)
+#define EXTERNAL_SSSE3_FAST(flags)  CPUEXT_SUFFIX_FAST(flags, _EXTERNAL, SSSE3)
+#define EXTERNAL_SSSE3_SLOW(flags)  CPUEXT_SUFFIX_SLOW(flags, _EXTERNAL, SSSE3)
+#define EXTERNAL_SSE4(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, SSE4)
+#define EXTERNAL_SSE42(flags)       CPUEXT_SUFFIX(flags, _EXTERNAL, SSE42)
+#define EXTERNAL_AVX(flags)         CPUEXT_SUFFIX(flags, _EXTERNAL, AVX)
+#define EXTERNAL_AVX_FAST(flags)    CPUEXT_SUFFIX_FAST(flags, _EXTERNAL, AVX)
+#define EXTERNAL_AVX_SLOW(flags)    CPUEXT_SUFFIX_SLOW(flags, _EXTERNAL, AVX)
+#define EXTERNAL_XOP(flags)         CPUEXT_SUFFIX(flags, _EXTERNAL, XOP)
+#define EXTERNAL_FMA3(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, FMA3)
+#define EXTERNAL_FMA3_FAST(flags)   CPUEXT_SUFFIX_FAST2(flags, _EXTERNAL, FMA3, AVX)
+#define EXTERNAL_FMA3_SLOW(flags)   CPUEXT_SUFFIX_SLOW2(flags, _EXTERNAL, FMA3, AVX)
+#define EXTERNAL_FMA4(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, FMA4)
+#define EXTERNAL_AVX2(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, AVX2)
+#define EXTERNAL_AVX2_FAST(flags)   CPUEXT_SUFFIX_FAST2(flags, _EXTERNAL, AVX2, AVX)
+#define EXTERNAL_AVX2_SLOW(flags)   CPUEXT_SUFFIX_SLOW2(flags, _EXTERNAL, AVX2, AVX)
+#define EXTERNAL_AESNI(flags)       CPUEXT_SUFFIX(flags, _EXTERNAL, AESNI)
+#define EXTERNAL_AVX512(flags)      CPUEXT_SUFFIX(flags, _EXTERNAL, AVX512)
+
+#define INLINE_AMD3DNOW(flags)      CPUEXT_SUFFIX(flags, _INLINE, AMD3DNOW)
+#define INLINE_AMD3DNOWEXT(flags)   CPUEXT_SUFFIX(flags, _INLINE, AMD3DNOWEXT)
+#define INLINE_MMX(flags)           CPUEXT_SUFFIX(flags, _INLINE, MMX)
+#define INLINE_MMXEXT(flags)        CPUEXT_SUFFIX(flags, _INLINE, MMXEXT)
+#define INLINE_SSE(flags)           CPUEXT_SUFFIX(flags, _INLINE, SSE)
+#define INLINE_SSE2(flags)          CPUEXT_SUFFIX(flags, _INLINE, SSE2)
+#define INLINE_SSE2_FAST(flags)     CPUEXT_SUFFIX_FAST(flags, _INLINE, SSE2)
+#define INLINE_SSE2_SLOW(flags)     CPUEXT_SUFFIX_SLOW(flags, _INLINE, SSE2)
+#define INLINE_SSE3(flags)          CPUEXT_SUFFIX(flags, _INLINE, SSE3)
+#define INLINE_SSE3_FAST(flags)     CPUEXT_SUFFIX_FAST(flags, _INLINE, SSE3)
+#define INLINE_SSE3_SLOW(flags)     CPUEXT_SUFFIX_SLOW(flags, _INLINE, SSE3)
+#define INLINE_SSSE3(flags)         CPUEXT_SUFFIX(flags, _INLINE, SSSE3)
+#define INLINE_SSSE3_FAST(flags)    CPUEXT_SUFFIX_FAST(flags, _INLINE, SSSE3)
+#define INLINE_SSSE3_SLOW(flags)    CPUEXT_SUFFIX_SLOW(flags, _INLINE, SSSE3)
+#define INLINE_SSE4(flags)          CPUEXT_SUFFIX(flags, _INLINE, SSE4)
+#define INLINE_SSE42(flags)         CPUEXT_SUFFIX(flags, _INLINE, SSE42)
+#define INLINE_AVX(flags)           CPUEXT_SUFFIX(flags, _INLINE, AVX)
+#define INLINE_AVX_FAST(flags)      CPUEXT_SUFFIX_FAST(flags, _INLINE, AVX)
+#define INLINE_AVX_SLOW(flags)      CPUEXT_SUFFIX_SLOW(flags, _INLINE, AVX)
+#define INLINE_XOP(flags)           CPUEXT_SUFFIX(flags, _INLINE, XOP)
+#define INLINE_FMA3(flags)          CPUEXT_SUFFIX(flags, _INLINE, FMA3)
+#define INLINE_FMA4(flags)          CPUEXT_SUFFIX(flags, _INLINE, FMA4)
+#define INLINE_AVX2(flags)          CPUEXT_SUFFIX(flags, _INLINE, AVX2)
+#define INLINE_AESNI(flags)         CPUEXT_SUFFIX(flags, _INLINE, AESNI)
+
+void ff_cpu_cpuid(int index, int *eax, int *ebx, int *ecx, int *edx);
+void ff_cpu_xgetbv(int op, int *eax, int *edx);
+int  ff_cpu_cpuid_test(void);
+
+#endif /* AVUTIL_X86_CPU_H */
diff --git a/media/ffvpx/libavutil/x86/cpuid.asm b/media/ffvpx/libavutil/x86/cpuid.asm
new file mode 100644
index 0000000000..c3f7866ec7
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/cpuid.asm
@@ -0,0 +1,91 @@
+;*****************************************************************************
+;* Copyright (C) 2005-2010 x264 project
+;*
+;* Authors: Loren Merritt <lorenm@u.washington.edu>
+;*          Fiona Glaser <fiona@x264.com>
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "x86util.asm"
+
+SECTION .text
+
+;-----------------------------------------------------------------------------
+; void ff_cpu_cpuid(int index, int *eax, int *ebx, int *ecx, int *edx)
+;-----------------------------------------------------------------------------
+cglobal cpu_cpuid, 5,7
+    push rbx
+    push  r4
+    push  r3
+    push  r2
+    push  r1
+    mov  eax, r0d
+    xor  ecx, ecx
+    cpuid
+    pop   r4
+    mov [r4], eax
+    pop   r4
+    mov [r4], ebx
+    pop   r4
+    mov [r4], ecx
+    pop   r4
+    mov [r4], edx
+    pop  rbx
+    RET
+
+;-----------------------------------------------------------------------------
+; void ff_cpu_xgetbv(int op, int *eax, int *edx)
+;-----------------------------------------------------------------------------
+cglobal cpu_xgetbv, 3,7
+    push  r2
+    push  r1
+    mov  ecx, r0d
+    xgetbv
+    pop   r4
+    mov [r4], eax
+    pop   r4
+    mov [r4], edx
+    RET
+
+%if ARCH_X86_64 == 0
+;-----------------------------------------------------------------------------
+; int ff_cpu_cpuid_test(void)
+; return 0 if unsupported
+;-----------------------------------------------------------------------------
+cglobal cpu_cpuid_test
+    pushfd
+    push    ebx
+    push    ebp
+    push    esi
+    push    edi
+    pushfd
+    pop     eax
+    mov     ebx, eax
+    xor     eax, 0x200000
+    push    eax
+    popfd
+    pushfd
+    pop     eax
+    xor     eax, ebx
+    pop     edi
+    pop     esi
+    pop     ebp
+    pop     ebx
+    popfd
+    ret
+%endif
diff --git a/media/ffvpx/libavutil/x86/emms.asm b/media/ffvpx/libavutil/x86/emms.asm
new file mode 100644
index 0000000000..8611762d73
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/emms.asm
@@ -0,0 +1,30 @@
+;*****************************************************************************
+;* Copyright (C) 2013 Martin Storsjo
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "x86util.asm"
+
+SECTION .text
+
+;-----------------------------------------------------------------------------
+; void avpriv_emms_asm(void)
+;-----------------------------------------------------------------------------
+cvisible emms_asm, 0, 0
+    emms
+    RET
diff --git a/media/ffvpx/libavutil/x86/emms.h b/media/ffvpx/libavutil/x86/emms.h
new file mode 100644
index 0000000000..c21e34b451
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/emms.h
@@ -0,0 +1,55 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_X86_EMMS_H
+#define AVUTIL_X86_EMMS_H
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+
+void avpriv_emms_asm(void);
+
+#if HAVE_MMX_INLINE
+#   define emms_c emms_c
+/**
+ * Empty mmx state.
+ * this must be called between any dsp function and float/double code.
+ * for example sin(); dsp->idct_put(); emms_c(); cos()
+ * Note, *alloc() and *free() also use float code in some libc implementations
+ * thus this also applies to them or any function using them.
+ */
+static av_always_inline void emms_c(void)
+{
+/* Some inlined functions may also use mmx instructions regardless of
+ * runtime cpuflags. With that in mind, we unconditionally empty the
+ * mmx state if the target cpu chosen at configure time supports it.
+ */
+#if !defined(__MMX__)
+    if(av_get_cpu_flags() & AV_CPU_FLAG_MMX)
+#endif
+        __asm__ volatile ("emms" ::: "memory");
+}
+#elif HAVE_MMX && HAVE_MM_EMPTY
+#   include <mmintrin.h>
+#   define emms_c _mm_empty
+#elif HAVE_MMX_EXTERNAL
+#   define emms_c avpriv_emms_asm
+#endif /* HAVE_MMX_INLINE */
+
+#endif /* AVUTIL_X86_EMMS_H */
diff --git a/media/ffvpx/libavutil/x86/fixed_dsp.asm b/media/ffvpx/libavutil/x86/fixed_dsp.asm
new file mode 100644
index 0000000000..979dd5c334
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/fixed_dsp.asm
@@ -0,0 +1,48 @@
+;*****************************************************************************
+;* x86-optimized Float DSP functions
+;*
+;* Copyright 2016 James Almer
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "x86util.asm"
+
+SECTION .text
+
+;-----------------------------------------------------------------------------
+; void ff_butterflies_fixed(float *src0, float *src1, int len);
+;-----------------------------------------------------------------------------
+INIT_XMM sse2
+cglobal butterflies_fixed, 3,3,3, src0, src1, len
+    shl       lend, 2
+    add      src0q, lenq
+    add      src1q, lenq
+    neg       lenq
+
+align 16
+.loop:
+    mova        m0, [src0q + lenq]
+    mova        m1, [src1q + lenq]
+    mova        m2, m0
+    paddd       m0, m1
+    psubd       m2, m1
+    mova        [src0q + lenq], m0
+    mova        [src1q + lenq], m2
+    add       lenq, mmsize
+    jl .loop
+    RET
diff --git a/media/ffvpx/libavutil/x86/fixed_dsp_init.c b/media/ffvpx/libavutil/x86/fixed_dsp_init.c
new file mode 100644
index 0000000000..303a2eb922
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/fixed_dsp_init.c
@@ -0,0 +1,35 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/fixed_dsp.h"
+#include "cpu.h"
+
+void ff_butterflies_fixed_sse2(int *src0, int *src1, int len);
+
+av_cold void ff_fixed_dsp_init_x86(AVFixedDSPContext *fdsp)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        fdsp->butterflies_fixed = ff_butterflies_fixed_sse2;
+    }
+}
diff --git a/media/ffvpx/libavutil/x86/float_dsp.asm b/media/ffvpx/libavutil/x86/float_dsp.asm
new file mode 100644
index 0000000000..517fd63638
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/float_dsp.asm
@@ -0,0 +1,484 @@
+;*****************************************************************************
+;* x86-optimized Float DSP functions
+;*
+;* Copyright 2006 Loren Merritt
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "x86util.asm"
+
+SECTION_RODATA 32
+pd_reverse: dd 7, 6, 5, 4, 3, 2, 1, 0
+
+SECTION .text
+
+;-----------------------------------------------------------------------------
+; void vector_fmul(float *dst, const float *src0, const float *src1, int len)
+;-----------------------------------------------------------------------------
+%macro VECTOR_FMUL 0
+cglobal vector_fmul, 4,4,2, dst, src0, src1, len
+    lea       lenq, [lend*4 - 64]
+ALIGN 16
+.loop:
+%assign a 0
+%rep 32/mmsize
+    mova      m0,   [src0q + lenq + (a+0)*mmsize]
+    mova      m1,   [src0q + lenq + (a+1)*mmsize]
+    mulps     m0, m0, [src1q + lenq + (a+0)*mmsize]
+    mulps     m1, m1, [src1q + lenq + (a+1)*mmsize]
+    mova      [dstq + lenq + (a+0)*mmsize], m0
+    mova      [dstq + lenq + (a+1)*mmsize], m1
+%assign a a+2
+%endrep
+
+    sub       lenq, 64
+    jge       .loop
+    REP_RET
+%endmacro
+
+INIT_XMM sse
+VECTOR_FMUL
+%if HAVE_AVX_EXTERNAL
+INIT_YMM avx
+VECTOR_FMUL
+%endif
+
+;-----------------------------------------------------------------------------
+; void vector_dmul(double *dst, const double *src0, const double *src1, int len)
+;-----------------------------------------------------------------------------
+%macro VECTOR_DMUL 0
+cglobal vector_dmul, 4,4,4, dst, src0, src1, len
+    lea       lend, [lenq*8 - mmsize*4]
+ALIGN 16
+.loop:
+    movaps    m0,     [src0q + lenq + 0*mmsize]
+    movaps    m1,     [src0q + lenq + 1*mmsize]
+    movaps    m2,     [src0q + lenq + 2*mmsize]
+    movaps    m3,     [src0q + lenq + 3*mmsize]
+    mulpd     m0, m0, [src1q + lenq + 0*mmsize]
+    mulpd     m1, m1, [src1q + lenq + 1*mmsize]
+    mulpd     m2, m2, [src1q + lenq + 2*mmsize]
+    mulpd     m3, m3, [src1q + lenq + 3*mmsize]
+    movaps    [dstq + lenq + 0*mmsize], m0
+    movaps    [dstq + lenq + 1*mmsize], m1
+    movaps    [dstq + lenq + 2*mmsize], m2
+    movaps    [dstq + lenq + 3*mmsize], m3
+
+    sub       lenq, mmsize*4
+    jge       .loop
+    RET
+%endmacro
+
+INIT_XMM sse2
+VECTOR_DMUL
+%if HAVE_AVX_EXTERNAL
+INIT_YMM avx
+VECTOR_DMUL
+%endif
+
+;------------------------------------------------------------------------------
+; void ff_vector_fmac_scalar(float *dst, const float *src, float mul, int len)
+;------------------------------------------------------------------------------
+
+%macro VECTOR_FMAC_SCALAR 0
+%if UNIX64
+cglobal vector_fmac_scalar, 3,3,5, dst, src, len
+%else
+cglobal vector_fmac_scalar, 4,4,5, dst, src, mul, len
+%endif
+%if ARCH_X86_32
+    VBROADCASTSS m0, mulm
+%else
+%if WIN64
+    SWAP 0, 2
+%endif
+    shufps      xm0, xm0, 0
+%if cpuflag(avx)
+    vinsertf128  m0, m0, xm0, 1
+%endif
+%endif
+    lea    lenq, [lend*4-64]
+.loop:
+%if cpuflag(fma3)
+    mova     m1,     [dstq+lenq]
+    mova     m2,     [dstq+lenq+1*mmsize]
+    fmaddps  m1, m0, [srcq+lenq], m1
+    fmaddps  m2, m0, [srcq+lenq+1*mmsize], m2
+%else ; cpuflag
+    mulps    m1, m0, [srcq+lenq]
+    mulps    m2, m0, [srcq+lenq+1*mmsize]
+%if mmsize < 32
+    mulps    m3, m0, [srcq+lenq+2*mmsize]
+    mulps    m4, m0, [srcq+lenq+3*mmsize]
+%endif ; mmsize
+    addps    m1, m1, [dstq+lenq]
+    addps    m2, m2, [dstq+lenq+1*mmsize]
+%if mmsize < 32
+    addps    m3, m3, [dstq+lenq+2*mmsize]
+    addps    m4, m4, [dstq+lenq+3*mmsize]
+%endif ; mmsize
+%endif ; cpuflag
+    mova  [dstq+lenq], m1
+    mova  [dstq+lenq+1*mmsize], m2
+%if mmsize < 32
+    mova  [dstq+lenq+2*mmsize], m3
+    mova  [dstq+lenq+3*mmsize], m4
+%endif ; mmsize
+    sub    lenq, 64
+    jge .loop
+    REP_RET
+%endmacro
+
+INIT_XMM sse
+VECTOR_FMAC_SCALAR
+%if HAVE_AVX_EXTERNAL
+INIT_YMM avx
+VECTOR_FMAC_SCALAR
+%endif
+%if HAVE_FMA3_EXTERNAL
+INIT_YMM fma3
+VECTOR_FMAC_SCALAR
+%endif
+
+;------------------------------------------------------------------------------
+; void ff_vector_fmul_scalar(float *dst, const float *src, float mul, int len)
+;------------------------------------------------------------------------------
+
+%macro VECTOR_FMUL_SCALAR 0
+%if UNIX64
+cglobal vector_fmul_scalar, 3,3,2, dst, src, len
+%else
+cglobal vector_fmul_scalar, 4,4,3, dst, src, mul, len
+%endif
+%if ARCH_X86_32
+    movss    m0, mulm
+%elif WIN64
+    SWAP 0, 2
+%endif
+    shufps   m0, m0, 0
+    lea    lenq, [lend*4-mmsize]
+.loop:
+    mova     m1, [srcq+lenq]
+    mulps    m1, m0
+    mova  [dstq+lenq], m1
+    sub    lenq, mmsize
+    jge .loop
+    REP_RET
+%endmacro
+
+INIT_XMM sse
+VECTOR_FMUL_SCALAR
+
+;------------------------------------------------------------------------------
+; void ff_vector_dmac_scalar(double *dst, const double *src, double mul,
+;                            int len)
+;------------------------------------------------------------------------------
+
+%macro VECTOR_DMAC_SCALAR 0
+%if ARCH_X86_32
+cglobal vector_dmac_scalar, 2,4,5, dst, src, mul, len, lenaddr
+    mov          lenq, lenaddrm
+    VBROADCASTSD m0, mulm
+%else
+%if UNIX64
+cglobal vector_dmac_scalar, 3,3,5, dst, src, len
+%else
+cglobal vector_dmac_scalar, 4,4,5, dst, src, mul, len
+    SWAP 0, 2
+%endif
+    movlhps     xm0, xm0
+%if cpuflag(avx)
+    vinsertf128  m0, m0, xm0, 1
+%endif
+%endif
+    lea    lenq, [lend*8-mmsize*4]
+.loop:
+%if cpuflag(fma3)
+    movaps   m1,     [dstq+lenq]
+    movaps   m2,     [dstq+lenq+1*mmsize]
+    movaps   m3,     [dstq+lenq+2*mmsize]
+    movaps   m4,     [dstq+lenq+3*mmsize]
+    fmaddpd  m1, m0, [srcq+lenq], m1
+    fmaddpd  m2, m0, [srcq+lenq+1*mmsize], m2
+    fmaddpd  m3, m0, [srcq+lenq+2*mmsize], m3
+    fmaddpd  m4, m0, [srcq+lenq+3*mmsize], m4
+%else ; cpuflag
+    mulpd    m1, m0, [srcq+lenq]
+    mulpd    m2, m0, [srcq+lenq+1*mmsize]
+    mulpd    m3, m0, [srcq+lenq+2*mmsize]
+    mulpd    m4, m0, [srcq+lenq+3*mmsize]
+    addpd    m1, m1, [dstq+lenq]
+    addpd    m2, m2, [dstq+lenq+1*mmsize]
+    addpd    m3, m3, [dstq+lenq+2*mmsize]
+    addpd    m4, m4, [dstq+lenq+3*mmsize]
+%endif ; cpuflag
+    movaps [dstq+lenq], m1
+    movaps [dstq+lenq+1*mmsize], m2
+    movaps [dstq+lenq+2*mmsize], m3
+    movaps [dstq+lenq+3*mmsize], m4
+    sub    lenq, mmsize*4
+    jge .loop
+    REP_RET
+%endmacro
+
+INIT_XMM sse2
+VECTOR_DMAC_SCALAR
+%if HAVE_AVX_EXTERNAL
+INIT_YMM avx
+VECTOR_DMAC_SCALAR
+%endif
+%if HAVE_FMA3_EXTERNAL
+INIT_YMM fma3
+VECTOR_DMAC_SCALAR
+%endif
+
+;------------------------------------------------------------------------------
+; void ff_vector_dmul_scalar(double *dst, const double *src, double mul,
+;                            int len)
+;------------------------------------------------------------------------------
+
+%macro VECTOR_DMUL_SCALAR 0
+%if ARCH_X86_32
+cglobal vector_dmul_scalar, 3,4,3, dst, src, mul, len, lenaddr
+    mov          lenq, lenaddrm
+%elif UNIX64
+cglobal vector_dmul_scalar, 3,3,3, dst, src, len
+%else
+cglobal vector_dmul_scalar, 4,4,3, dst, src, mul, len
+%endif
+%if ARCH_X86_32
+    VBROADCASTSD   m0, mulm
+%else
+%if WIN64
+    SWAP 0, 2
+%endif
+    movlhps       xm0, xm0
+%if cpuflag(avx)
+    vinsertf128   ym0, ym0, xm0, 1
+%endif
+%endif
+    lea          lenq, [lend*8-2*mmsize]
+.loop:
+    mulpd          m1, m0, [srcq+lenq       ]
+    mulpd          m2, m0, [srcq+lenq+mmsize]
+    movaps [dstq+lenq       ], m1
+    movaps [dstq+lenq+mmsize], m2
+    sub          lenq, 2*mmsize
+    jge .loop
+    REP_RET
+%endmacro
+
+INIT_XMM sse2
+VECTOR_DMUL_SCALAR
+%if HAVE_AVX_EXTERNAL
+INIT_YMM avx
+VECTOR_DMUL_SCALAR
+%endif
+
+;-----------------------------------------------------------------------------
+; vector_fmul_window(float *dst, const float *src0,
+;                    const float *src1, const float *win, int len);
+;-----------------------------------------------------------------------------
+%macro VECTOR_FMUL_WINDOW 0
+cglobal vector_fmul_window, 5, 6, 6, dst, src0, src1, win, len, len1
+    shl     lend, 2
+    lea    len1q, [lenq - mmsize]
+    add    src0q, lenq
+    add     dstq, lenq
+    add     winq, lenq
+    neg     lenq
+.loop:
+    mova      m0, [winq  + lenq]
+    mova      m4, [src0q + lenq]
+%if cpuflag(sse)
+    mova      m1, [winq  + len1q]
+    mova      m5, [src1q + len1q]
+    shufps    m1, m1, 0x1b
+    shufps    m5, m5, 0x1b
+    mova      m2, m0
+    mova      m3, m1
+    mulps     m2, m4
+    mulps     m3, m5
+    mulps     m1, m4
+    mulps     m0, m5
+    addps     m2, m3
+    subps     m1, m0
+    shufps    m2, m2, 0x1b
+%else
+    pswapd    m1, [winq  + len1q]
+    pswapd    m5, [src1q + len1q]
+    mova      m2, m0
+    mova      m3, m1
+    pfmul     m2, m4
+    pfmul     m3, m5
+    pfmul     m1, m4
+    pfmul     m0, m5
+    pfadd     m2, m3
+    pfsub     m1, m0
+    pswapd    m2, m2
+%endif
+    mova      [dstq + lenq], m1
+    mova      [dstq + len1q], m2
+    sub       len1q, mmsize
+    add       lenq,  mmsize
+    jl .loop
+%if mmsize == 8
+    femms
+%endif
+    REP_RET
+%endmacro
+
+INIT_MMX 3dnowext
+VECTOR_FMUL_WINDOW
+INIT_XMM sse
+VECTOR_FMUL_WINDOW
+
+;-----------------------------------------------------------------------------
+; vector_fmul_add(float *dst, const float *src0, const float *src1,
+;                 const float *src2, int len)
+;-----------------------------------------------------------------------------
+%macro VECTOR_FMUL_ADD 0
+cglobal vector_fmul_add, 5,5,4, dst, src0, src1, src2, len
+    lea       lenq, [lend*4 - 2*mmsize]
+ALIGN 16
+.loop:
+    mova    m0,   [src0q + lenq]
+    mova    m1,   [src0q + lenq + mmsize]
+%if cpuflag(fma3)
+    mova    m2,     [src2q + lenq]
+    mova    m3,     [src2q + lenq + mmsize]
+    fmaddps m0, m0, [src1q + lenq], m2
+    fmaddps m1, m1, [src1q + lenq + mmsize], m3
+%else
+    mulps   m0, m0, [src1q + lenq]
+    mulps   m1, m1, [src1q + lenq + mmsize]
+    addps   m0, m0, [src2q + lenq]
+    addps   m1, m1, [src2q + lenq + mmsize]
+%endif
+    mova    [dstq + lenq], m0
+    mova    [dstq + lenq + mmsize], m1
+
+    sub     lenq,   2*mmsize
+    jge     .loop
+    REP_RET
+%endmacro
+
+INIT_XMM sse
+VECTOR_FMUL_ADD
+%if HAVE_AVX_EXTERNAL
+INIT_YMM avx
+VECTOR_FMUL_ADD
+%endif
+%if HAVE_FMA3_EXTERNAL
+INIT_YMM fma3
+VECTOR_FMUL_ADD
+%endif
+
+;-----------------------------------------------------------------------------
+; void vector_fmul_reverse(float *dst, const float *src0, const float *src1,
+;                          int len)
+;-----------------------------------------------------------------------------
+%macro VECTOR_FMUL_REVERSE 0
+cglobal vector_fmul_reverse, 4,4,2, dst, src0, src1, len
+%if cpuflag(avx2)
+    movaps  m2, [pd_reverse]
+%endif
+    lea       lenq, [lend*4 - 2*mmsize]
+ALIGN 16
+.loop:
+%if cpuflag(avx2)
+    vpermps m0, m2, [src1q]
+    vpermps m1, m2, [src1q+mmsize]
+%elif cpuflag(avx)
+    vmovaps     xmm0, [src1q + 16]
+    vinsertf128 m0, m0, [src1q], 1
+    vshufps     m0, m0, m0, q0123
+    vmovaps     xmm1, [src1q + mmsize + 16]
+    vinsertf128 m1, m1, [src1q + mmsize], 1
+    vshufps     m1, m1, m1, q0123
+%else
+    mova    m0, [src1q]
+    mova    m1, [src1q + mmsize]
+    shufps  m0, m0, q0123
+    shufps  m1, m1, q0123
+%endif
+    mulps   m0, m0, [src0q + lenq + mmsize]
+    mulps   m1, m1, [src0q + lenq]
+    movaps  [dstq + lenq + mmsize], m0
+    movaps  [dstq + lenq], m1
+    add     src1q, 2*mmsize
+    sub     lenq,  2*mmsize
+    jge     .loop
+    REP_RET
+%endmacro
+
+INIT_XMM sse
+VECTOR_FMUL_REVERSE
+%if HAVE_AVX_EXTERNAL
+INIT_YMM avx
+VECTOR_FMUL_REVERSE
+%endif
+%if HAVE_AVX2_EXTERNAL
+INIT_YMM avx2
+VECTOR_FMUL_REVERSE
+%endif
+
+; float scalarproduct_float_sse(const float *v1, const float *v2, int len)
+INIT_XMM sse
+cglobal scalarproduct_float, 3,3,2, v1, v2, offset
+    shl   offsetd, 2
+    add       v1q, offsetq
+    add       v2q, offsetq
+    neg   offsetq
+    xorps    xmm0, xmm0
+.loop:
+    movaps   xmm1, [v1q+offsetq]
+    mulps    xmm1, [v2q+offsetq]
+    addps    xmm0, xmm1
+    add   offsetq, 16
+    js .loop
+    movhlps  xmm1, xmm0
+    addps    xmm0, xmm1
+    movss    xmm1, xmm0
+    shufps   xmm0, xmm0, 1
+    addss    xmm0, xmm1
+%if ARCH_X86_64 == 0
+    movss     r0m,  xmm0
+    fld dword r0m
+%endif
+    RET
+
+;-----------------------------------------------------------------------------
+; void ff_butterflies_float(float *src0, float *src1, int len);
+;-----------------------------------------------------------------------------
+INIT_XMM sse
+cglobal butterflies_float, 3,3,3, src0, src1, len
+    shl       lend, 2
+    add      src0q, lenq
+    add      src1q, lenq
+    neg       lenq
+.loop:
+    mova        m0, [src0q + lenq]
+    mova        m1, [src1q + lenq]
+    subps       m2, m0, m1
+    addps       m0, m0, m1
+    mova        [src1q + lenq], m2
+    mova        [src0q + lenq], m0
+    add       lenq, mmsize
+    jl .loop
+    REP_RET
diff --git a/media/ffvpx/libavutil/x86/float_dsp_init.c b/media/ffvpx/libavutil/x86/float_dsp_init.c
new file mode 100644
index 0000000000..8826e4e2c9
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/float_dsp_init.c
@@ -0,0 +1,121 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/float_dsp.h"
+#include "cpu.h"
+#include "asm.h"
+
+void ff_vector_fmul_sse(float *dst, const float *src0, const float *src1,
+                        int len);
+void ff_vector_fmul_avx(float *dst, const float *src0, const float *src1,
+                        int len);
+
+void ff_vector_dmul_sse2(double *dst, const double *src0, const double *src1,
+                         int len);
+void ff_vector_dmul_avx(double *dst, const double *src0, const double *src1,
+                        int len);
+
+void ff_vector_fmac_scalar_sse(float *dst, const float *src, float mul,
+                               int len);
+void ff_vector_fmac_scalar_avx(float *dst, const float *src, float mul,
+                               int len);
+void ff_vector_fmac_scalar_fma3(float *dst, const float *src, float mul,
+                                int len);
+
+void ff_vector_fmul_scalar_sse(float *dst, const float *src, float mul,
+                               int len);
+
+void ff_vector_dmac_scalar_sse2(double *dst, const double *src, double mul,
+                                int len);
+void ff_vector_dmac_scalar_avx(double *dst, const double *src, double mul,
+                               int len);
+void ff_vector_dmac_scalar_fma3(double *dst, const double *src, double mul,
+                                int len);
+
+void ff_vector_dmul_scalar_sse2(double *dst, const double *src,
+                                double mul, int len);
+void ff_vector_dmul_scalar_avx(double *dst, const double *src,
+                               double mul, int len);
+
+void ff_vector_fmul_window_3dnowext(float *dst, const float *src0,
+                                    const float *src1, const float *win, int len);
+void ff_vector_fmul_window_sse(float *dst, const float *src0,
+                               const float *src1, const float *win, int len);
+
+void ff_vector_fmul_add_sse(float *dst, const float *src0, const float *src1,
+                            const float *src2, int len);
+void ff_vector_fmul_add_avx(float *dst, const float *src0, const float *src1,
+                            const float *src2, int len);
+void ff_vector_fmul_add_fma3(float *dst, const float *src0, const float *src1,
+                             const float *src2, int len);
+
+void ff_vector_fmul_reverse_sse(float *dst, const float *src0,
+                                const float *src1, int len);
+void ff_vector_fmul_reverse_avx(float *dst, const float *src0,
+                                const float *src1, int len);
+void ff_vector_fmul_reverse_avx2(float *dst, const float *src0,
+                                 const float *src1, int len);
+
+float ff_scalarproduct_float_sse(const float *v1, const float *v2, int order);
+
+void ff_butterflies_float_sse(float *av_restrict src0, float *av_restrict src1, int len);
+
+av_cold void ff_float_dsp_init_x86(AVFloatDSPContext *fdsp)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
+        fdsp->vector_fmul_window = ff_vector_fmul_window_3dnowext;
+    }
+    if (EXTERNAL_SSE(cpu_flags)) {
+        fdsp->vector_fmul = ff_vector_fmul_sse;
+        fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_sse;
+        fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_sse;
+        fdsp->vector_fmul_window = ff_vector_fmul_window_sse;
+        fdsp->vector_fmul_add    = ff_vector_fmul_add_sse;
+        fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_sse;
+        fdsp->scalarproduct_float = ff_scalarproduct_float_sse;
+        fdsp->butterflies_float   = ff_butterflies_float_sse;
+    }
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        fdsp->vector_dmul = ff_vector_dmul_sse2;
+        fdsp->vector_dmac_scalar = ff_vector_dmac_scalar_sse2;
+        fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_sse2;
+    }
+    if (EXTERNAL_AVX_FAST(cpu_flags)) {
+        fdsp->vector_fmul = ff_vector_fmul_avx;
+        fdsp->vector_dmul = ff_vector_dmul_avx;
+        fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_avx;
+        fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_avx;
+        fdsp->vector_dmac_scalar = ff_vector_dmac_scalar_avx;
+        fdsp->vector_fmul_add    = ff_vector_fmul_add_avx;
+        fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_avx;
+    }
+    if (EXTERNAL_AVX2_FAST(cpu_flags)) {
+        fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_avx2;
+    }
+    if (EXTERNAL_FMA3_FAST(cpu_flags)) {
+        fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_fma3;
+        fdsp->vector_fmul_add    = ff_vector_fmul_add_fma3;
+        fdsp->vector_dmac_scalar = ff_vector_dmac_scalar_fma3;
+    }
+}
diff --git a/media/ffvpx/libavutil/x86/imgutils.asm b/media/ffvpx/libavutil/x86/imgutils.asm
new file mode 100644
index 0000000000..3cca56cdca
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/imgutils.asm
@@ -0,0 +1,53 @@
+;*****************************************************************************
+;* Copyright 2016 Anton Khirnov
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "libavutil/x86/x86util.asm"
+
+SECTION .text
+
+INIT_XMM sse4
+cglobal image_copy_plane_uc_from, 6, 7, 4, dst, dst_linesize, src, src_linesize, bw, height, rowpos
+    add dstq, bwq
+    add srcq, bwq
+    neg bwq
+
+.row_start:
+    mov rowposq, bwq
+
+.loop:
+    movntdqa m0, [srcq + rowposq + 0 * mmsize]
+    movntdqa m1, [srcq + rowposq + 1 * mmsize]
+    movntdqa m2, [srcq + rowposq + 2 * mmsize]
+    movntdqa m3, [srcq + rowposq + 3 * mmsize]
+
+    mova [dstq + rowposq + 0 * mmsize], m0
+    mova [dstq + rowposq + 1 * mmsize], m1
+    mova [dstq + rowposq + 2 * mmsize], m2
+    mova [dstq + rowposq + 3 * mmsize], m3
+
+    add rowposq, 4 * mmsize
+    jnz .loop
+
+    add srcq, src_linesizeq
+    add dstq, dst_linesizeq
+    dec heightd
+    jnz .row_start
+
+    RET
diff --git a/media/ffvpx/libavutil/x86/imgutils_init.c b/media/ffvpx/libavutil/x86/imgutils_init.c
new file mode 100644
index 0000000000..4ea398205e
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/imgutils_init.c
@@ -0,0 +1,49 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "libavutil/cpu.h"
+#include "libavutil/error.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/imgutils_internal.h"
+#include "libavutil/internal.h"
+
+#include "cpu.h"
+
+void ff_image_copy_plane_uc_from_sse4(uint8_t *dst, ptrdiff_t dst_linesize,
+                                      const uint8_t *src, ptrdiff_t src_linesize,
+                                      ptrdiff_t bytewidth, int height);
+
+int ff_image_copy_plane_uc_from_x86(uint8_t       *dst, ptrdiff_t dst_linesize,
+                                    const uint8_t *src, ptrdiff_t src_linesize,
+                                    ptrdiff_t bytewidth, int height)
+{
+    int cpu_flags = av_get_cpu_flags();
+    ptrdiff_t bw_aligned = FFALIGN(bytewidth, 64);
+
+    if (EXTERNAL_SSE4(cpu_flags) &&
+        bw_aligned <= dst_linesize && bw_aligned <= src_linesize)
+        ff_image_copy_plane_uc_from_sse4(dst, dst_linesize, src, src_linesize,
+                                         bw_aligned, height);
+    else
+        return AVERROR(ENOSYS);
+
+    return 0;
+}
diff --git a/media/ffvpx/libavutil/x86/intmath.h b/media/ffvpx/libavutil/x86/intmath.h
new file mode 100644
index 0000000000..40743fd13e
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/intmath.h
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2015 James Almer
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_X86_INTMATH_H
+#define AVUTIL_X86_INTMATH_H
+
+#include <stdint.h>
+#include <stdlib.h>
+#if HAVE_FAST_CLZ
+#if defined(_MSC_VER)
+#include <intrin.h>
+#elif defined(__INTEL_COMPILER)
+#include <immintrin.h>
+#endif
+#endif
+#include "config.h"
+
+#if HAVE_FAST_CLZ
+#if (defined(__INTEL_COMPILER) && (__INTEL_COMPILER>=1216)) || defined(_MSC_VER)
+#   if defined(__INTEL_COMPILER)
+#       define ff_log2(x) (_bit_scan_reverse((x)|1))
+#   else
+#       define ff_log2 ff_log2_x86
+static av_always_inline av_const int ff_log2_x86(unsigned int v)
+{
+    unsigned long n;
+    _BitScanReverse(&n, v|1);
+    return n;
+}
+#   endif
+#   define ff_log2_16bit av_log2
+
+#if defined(__INTEL_COMPILER) || (defined(_MSC_VER) && (_MSC_VER >= 1700) && \
+                                  (defined(__BMI__) || !defined(__clang__)))
+#   define ff_ctz(v) _tzcnt_u32(v)
+
+#   if ARCH_X86_64
+#       define ff_ctzll(v) _tzcnt_u64(v)
+#   else
+#       define ff_ctzll ff_ctzll_x86
+static av_always_inline av_const int ff_ctzll_x86(long long v)
+{
+    return ((uint32_t)v == 0) ? _tzcnt_u32((uint32_t)(v >> 32)) + 32 : _tzcnt_u32((uint32_t)v);
+}
+#   endif
+#endif /* _MSC_VER */
+
+#endif /* __INTEL_COMPILER */
+
+#endif /* HAVE_FAST_CLZ */
+
+#if defined(__GNUC__)
+
+/* Our generic version of av_popcount is faster than GCC's built-in on
+ * CPUs that don't support the popcnt instruction.
+ */
+#if defined(__POPCNT__)
+    #define av_popcount   __builtin_popcount
+#if ARCH_X86_64
+    #define av_popcount64 __builtin_popcountll
+#endif
+
+#endif /* __POPCNT__ */
+
+#if defined(__BMI2__)
+
+#if AV_GCC_VERSION_AT_LEAST(5,1)
+#define av_mod_uintp2 __builtin_ia32_bzhi_si
+#elif HAVE_INLINE_ASM
+/* GCC releases before 5.1.0 have a broken bzhi builtin, so for those we
+ * implement it using inline assembly
+ */
+#define av_mod_uintp2 av_mod_uintp2_bmi2
+static av_always_inline av_const unsigned av_mod_uintp2_bmi2(unsigned a, unsigned p)
+{
+    if (av_builtin_constant_p(p))
+        return a & ((1 << p) - 1);
+    else {
+        unsigned x;
+        __asm__ ("bzhi %2, %1, %0 \n\t" : "=r"(x) : "rm"(a), "r"(p));
+        return x;
+    }
+}
+#endif /* AV_GCC_VERSION_AT_LEAST */
+
+#endif /* __BMI2__ */
+
+#if defined(__SSE2__) && !defined(__INTEL_COMPILER)
+
+#define av_clipd av_clipd_sse2
+static av_always_inline av_const double av_clipd_sse2(double a, double amin, double amax)
+{
+#if defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2
+    if (amin > amax) abort();
+#endif
+    __asm__ ("minsd %2, %0 \n\t"
+             "maxsd %1, %0 \n\t"
+             : "+&x"(a) : "xm"(amin), "xm"(amax));
+    return a;
+}
+
+#endif /* __SSE2__ */
+
+#if defined(__SSE__) && !defined(__INTEL_COMPILER)
+
+#define av_clipf av_clipf_sse
+static av_always_inline av_const float av_clipf_sse(float a, float amin, float amax)
+{
+#if defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2
+    if (amin > amax) abort();
+#endif
+    __asm__ ("minss %2, %0 \n\t"
+             "maxss %1, %0 \n\t"
+             : "+&x"(a) : "xm"(amin), "xm"(amax));
+    return a;
+}
+
+#endif /* __SSE__ */
+
+#endif /* __GNUC__ */
+
+#endif /* AVUTIL_X86_INTMATH_H */
diff --git a/media/ffvpx/libavutil/x86/intreadwrite.h b/media/ffvpx/libavutil/x86/intreadwrite.h
new file mode 100644
index 0000000000..4061d19231
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/intreadwrite.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2010 Alexander Strange <astrange@ithinksw.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_X86_INTREADWRITE_H
+#define AVUTIL_X86_INTREADWRITE_H
+
+#include <stdint.h>
+#include "config.h"
+#include "libavutil/attributes.h"
+
+#if HAVE_MMX
+
+#if !HAVE_FAST_64BIT && defined(__MMX__)
+
+#define AV_COPY64 AV_COPY64
+static av_always_inline void AV_COPY64(void *d, const void *s)
+{
+    __asm__("movq   %1, %%mm0  \n\t"
+            "movq   %%mm0, %0  \n\t"
+            : "=m"(*(uint64_t*)d)
+            : "m" (*(const uint64_t*)s)
+            : "mm0");
+}
+
+#define AV_SWAP64 AV_SWAP64
+static av_always_inline void AV_SWAP64(void *a, void *b)
+{
+    __asm__("movq   %1, %%mm0  \n\t"
+            "movq   %0, %%mm1  \n\t"
+            "movq   %%mm0, %0  \n\t"
+            "movq   %%mm1, %1  \n\t"
+            : "+m"(*(uint64_t*)a), "+m"(*(uint64_t*)b)
+            ::"mm0", "mm1");
+}
+
+#define AV_ZERO64 AV_ZERO64
+static av_always_inline void AV_ZERO64(void *d)
+{
+    __asm__("pxor %%mm0, %%mm0  \n\t"
+            "movq %%mm0, %0     \n\t"
+            : "=m"(*(uint64_t*)d)
+            :: "mm0");
+}
+
+#endif /* !HAVE_FAST_64BIT && defined(__MMX__) */
+
+#ifdef __SSE__
+
+#define AV_COPY128 AV_COPY128
+static av_always_inline void AV_COPY128(void *d, const void *s)
+{
+    struct v {uint64_t v[2];};
+
+    __asm__("movaps   %1, %%xmm0  \n\t"
+            "movaps   %%xmm0, %0  \n\t"
+            : "=m"(*(struct v*)d)
+            : "m" (*(const struct v*)s)
+            : "xmm0");
+}
+
+#endif /* __SSE__ */
+
+#ifdef __SSE2__
+
+#define AV_ZERO128 AV_ZERO128
+static av_always_inline void AV_ZERO128(void *d)
+{
+    struct v {uint64_t v[2];};
+
+    __asm__("pxor %%xmm0, %%xmm0  \n\t"
+            "movdqa   %%xmm0, %0  \n\t"
+            : "=m"(*(struct v*)d)
+            :: "xmm0");
+}
+
+#endif /* __SSE2__ */
+
+#endif /* HAVE_MMX */
+
+#endif /* AVUTIL_X86_INTREADWRITE_H */
diff --git a/media/ffvpx/libavutil/x86/lls.asm b/media/ffvpx/libavutil/x86/lls.asm
new file mode 100644
index 0000000000..317fba6fca
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/lls.asm
@@ -0,0 +1,290 @@
+;******************************************************************************
+;* linear least squares model
+;*
+;* Copyright (c) 2013 Loren Merritt
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "x86util.asm"
+
+SECTION .text
+
+%define MAX_VARS 32
+%define MAX_VARS_ALIGN (MAX_VARS+4)
+%define COVAR_STRIDE MAX_VARS_ALIGN*8
+%define COVAR(x,y) [covarq + (x)*8 + (y)*COVAR_STRIDE]
+
+struc LLSModel
+    .covariance:  resq MAX_VARS_ALIGN*MAX_VARS_ALIGN
+    .coeff:       resq MAX_VARS*MAX_VARS
+    .variance:    resq MAX_VARS
+    .indep_count: resd 1
+endstruc
+
+%macro ADDPD_MEM 2
+%if cpuflag(avx)
+    vaddpd %2, %2, %1
+%else
+    addpd  %2, %1
+%endif
+    mova   %1, %2
+%endmacro
+
+INIT_XMM sse2
+%define movdqa movaps
+cglobal update_lls, 2,5,8, ctx, var, i, j, covar2
+    %define covarq ctxq
+    mov     id, [ctxq + LLSModel.indep_count]
+    lea   varq, [varq + iq*8]
+    neg     iq
+    mov covar2q, covarq
+.loopi:
+    ; Compute all 3 pairwise products of a 2x2 block that lies on the diagonal
+    mova    m1, [varq + iq*8]
+    mova    m3, [varq + iq*8 + 16]
+    pshufd  m4, m1, q1010
+    pshufd  m5, m1, q3232
+    pshufd  m6, m3, q1010
+    pshufd  m7, m3, q3232
+    mulpd   m0, m1, m4
+    mulpd   m1, m1, m5
+    lea covarq, [covar2q + 16]
+    ADDPD_MEM COVAR(-2,0), m0
+    ADDPD_MEM COVAR(-2,1), m1
+    lea     jq, [iq + 2]
+    cmp     jd, -2
+    jg .skip4x4
+.loop4x4:
+    ; Compute all 16 pairwise products of a 4x4 block
+    mulpd   m0, m4, m3
+    mulpd   m1, m5, m3
+    mulpd   m2, m6, m3
+    mulpd   m3, m3, m7
+    ADDPD_MEM COVAR(0,0), m0
+    ADDPD_MEM COVAR(0,1), m1
+    ADDPD_MEM COVAR(0,2), m2
+    ADDPD_MEM COVAR(0,3), m3
+    mova    m3, [varq + jq*8 + 16]
+    mulpd   m0, m4, m3
+    mulpd   m1, m5, m3
+    mulpd   m2, m6, m3
+    mulpd   m3, m3, m7
+    ADDPD_MEM COVAR(2,0), m0
+    ADDPD_MEM COVAR(2,1), m1
+    ADDPD_MEM COVAR(2,2), m2
+    ADDPD_MEM COVAR(2,3), m3
+    mova    m3, [varq + jq*8 + 32]
+    add covarq, 32
+    add     jq, 4
+    cmp     jd, -2
+    jle .loop4x4
+.skip4x4:
+    test    jd, jd
+    jg .skip2x4
+    mulpd   m4, m3
+    mulpd   m5, m3
+    mulpd   m6, m3
+    mulpd   m7, m3
+    ADDPD_MEM COVAR(0,0), m4
+    ADDPD_MEM COVAR(0,1), m5
+    ADDPD_MEM COVAR(0,2), m6
+    ADDPD_MEM COVAR(0,3), m7
+.skip2x4:
+    add     iq, 4
+    add covar2q, 4*COVAR_STRIDE+32
+    cmp     id, -2
+    jle .loopi
+    test    id, id
+    jg .ret
+    mov     jq, iq
+    %define covarq covar2q
+.loop2x1:
+    movsd   m0, [varq + iq*8]
+    movlhps m0, m0
+    mulpd   m0, [varq + jq*8]
+    ADDPD_MEM COVAR(0,0), m0
+    inc     iq
+    add covarq, COVAR_STRIDE
+    test    id, id
+    jle .loop2x1
+.ret:
+    REP_RET
+
+%macro UPDATE_LLS 0
+cglobal update_lls, 3,6,8, ctx, var, count, i, j, count2
+    %define covarq ctxq
+    mov  countd, [ctxq + LLSModel.indep_count]
+    lea count2d, [countq-2]
+    xor     id, id
+.loopi:
+    ; Compute all 10 pairwise products of a 4x4 block that lies on the diagonal
+    mova    ymm1, [varq + iq*8]
+    vbroadcastsd ymm4, [varq + iq*8]
+    vbroadcastsd ymm5, [varq + iq*8 + 8]
+    vbroadcastsd ymm6, [varq + iq*8 + 16]
+    vbroadcastsd ymm7, [varq + iq*8 + 24]
+    vextractf128 xmm3, ymm1, 1
+%if cpuflag(fma3)
+    mova ymm0, COVAR(iq  ,0)
+    mova xmm2, COVAR(iq+2,2)
+    fmaddpd ymm0, ymm1, ymm4, ymm0
+    fmaddpd xmm2, xmm3, xmm6, xmm2
+    fmaddpd ymm1, ymm5, ymm1, COVAR(iq  ,1)
+    fmaddpd xmm3, xmm7, xmm3, COVAR(iq+2,3)
+    mova COVAR(iq  ,0), ymm0
+    mova COVAR(iq  ,1), ymm1
+    mova COVAR(iq+2,2), xmm2
+    mova COVAR(iq+2,3), xmm3
+%else
+    vmulpd  ymm0, ymm1, ymm4
+    vmulpd  ymm1, ymm1, ymm5
+    vmulpd  xmm2, xmm3, xmm6
+    vmulpd  xmm3, xmm3, xmm7
+    ADDPD_MEM COVAR(iq  ,0), ymm0
+    ADDPD_MEM COVAR(iq  ,1), ymm1
+    ADDPD_MEM COVAR(iq+2,2), xmm2
+    ADDPD_MEM COVAR(iq+2,3), xmm3
+%endif ; cpuflag(fma3)
+    lea     jd, [iq + 4]
+    cmp     jd, count2d
+    jg .skip4x4
+.loop4x4:
+    ; Compute all 16 pairwise products of a 4x4 block
+    mova    ymm3, [varq + jq*8]
+%if cpuflag(fma3)
+    mova ymm0, COVAR(jq, 0)
+    mova ymm1, COVAR(jq, 1)
+    mova ymm2, COVAR(jq, 2)
+    fmaddpd ymm0, ymm3, ymm4, ymm0
+    fmaddpd ymm1, ymm3, ymm5, ymm1
+    fmaddpd ymm2, ymm3, ymm6, ymm2
+    fmaddpd ymm3, ymm7, ymm3, COVAR(jq,3)
+    mova COVAR(jq, 0), ymm0
+    mova COVAR(jq, 1), ymm1
+    mova COVAR(jq, 2), ymm2
+    mova COVAR(jq, 3), ymm3
+%else
+    vmulpd  ymm0, ymm3, ymm4
+    vmulpd  ymm1, ymm3, ymm5
+    vmulpd  ymm2, ymm3, ymm6
+    vmulpd  ymm3, ymm3, ymm7
+    ADDPD_MEM COVAR(jq,0), ymm0
+    ADDPD_MEM COVAR(jq,1), ymm1
+    ADDPD_MEM COVAR(jq,2), ymm2
+    ADDPD_MEM COVAR(jq,3), ymm3
+%endif ; cpuflag(fma3)
+    add     jd, 4
+    cmp     jd, count2d
+    jle .loop4x4
+.skip4x4:
+    cmp     jd, countd
+    jg .skip2x4
+    mova    xmm3, [varq + jq*8]
+%if cpuflag(fma3)
+    mova xmm0, COVAR(jq, 0)
+    mova xmm1, COVAR(jq, 1)
+    mova xmm2, COVAR(jq, 2)
+    fmaddpd xmm0, xmm3, xmm4, xmm0
+    fmaddpd xmm1, xmm3, xmm5, xmm1
+    fmaddpd xmm2, xmm3, xmm6, xmm2
+    fmaddpd xmm3, xmm7, xmm3, COVAR(jq,3)
+    mova COVAR(jq, 0), xmm0
+    mova COVAR(jq, 1), xmm1
+    mova COVAR(jq, 2), xmm2
+    mova COVAR(jq, 3), xmm3
+%else
+    vmulpd  xmm0, xmm3, xmm4
+    vmulpd  xmm1, xmm3, xmm5
+    vmulpd  xmm2, xmm3, xmm6
+    vmulpd  xmm3, xmm3, xmm7
+    ADDPD_MEM COVAR(jq,0), xmm0
+    ADDPD_MEM COVAR(jq,1), xmm1
+    ADDPD_MEM COVAR(jq,2), xmm2
+    ADDPD_MEM COVAR(jq,3), xmm3
+%endif ; cpuflag(fma3)
+.skip2x4:
+    add     id, 4
+    add covarq, 4*COVAR_STRIDE
+    cmp     id, count2d
+    jle .loopi
+    cmp     id, countd
+    jg .ret
+    mov     jd, id
+.loop2x1:
+    vmovddup xmm0, [varq + iq*8]
+%if cpuflag(fma3)
+    mova xmm1, [varq + jq*8]
+    fmaddpd xmm0, xmm1, xmm0, COVAR(jq,0)
+    mova COVAR(jq,0), xmm0
+%else
+    vmulpd   xmm0, [varq + jq*8]
+    ADDPD_MEM COVAR(jq,0), xmm0
+%endif ; cpuflag(fma3)
+    inc     id
+    add covarq, COVAR_STRIDE
+    cmp     id, countd
+    jle .loop2x1
+.ret:
+    REP_RET
+%endmacro ; UPDATE_LLS
+
+%if HAVE_AVX_EXTERNAL
+INIT_YMM avx
+UPDATE_LLS
+%endif
+%if HAVE_FMA3_EXTERNAL
+INIT_YMM fma3
+UPDATE_LLS
+%endif
+
+INIT_XMM sse2
+cglobal evaluate_lls, 3,4,2, ctx, var, order, i
+    ; This function is often called on the same buffer as update_lls, but with
+    ; an offset. They can't both be aligned.
+    ; Load halves rather than movu to avoid store-forwarding stalls, since the
+    ; input was initialized immediately prior to this function using scalar math.
+    %define coefsq ctxq
+    mov     id, orderd
+    imul    orderd, MAX_VARS
+    lea     coefsq, [ctxq + LLSModel.coeff + orderq*8]
+    movsd   m0, [varq]
+    movhpd  m0, [varq + 8]
+    mulpd   m0, [coefsq]
+    lea coefsq, [coefsq + iq*8]
+    lea   varq, [varq + iq*8]
+    neg     iq
+    add     iq, 2
+.loop:
+    movsd   m1, [varq + iq*8]
+    movhpd  m1, [varq + iq*8 + 8]
+    mulpd   m1, [coefsq + iq*8]
+    addpd   m0, m1
+    add     iq, 2
+    jl .loop
+    jg .skip1
+    movsd   m1, [varq + iq*8]
+    mulsd   m1, [coefsq + iq*8]
+    addpd   m0, m1
+.skip1:
+    movhlps m1, m0
+    addsd   m0, m1
+%if ARCH_X86_32
+    movsd  r0m, m0
+    fld   qword r0m
+%endif
+    RET
diff --git a/media/ffvpx/libavutil/x86/lls_init.c b/media/ffvpx/libavutil/x86/lls_init.c
new file mode 100644
index 0000000000..1c5dca42dc
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/lls_init.c
@@ -0,0 +1,45 @@
+/*
+ * linear least squares model
+ *
+ * Copyright (c) 2013 Loren Merritt
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/lls.h"
+#include "libavutil/x86/cpu.h"
+
+void ff_update_lls_sse2(LLSModel *m, const double *var);
+void ff_update_lls_avx(LLSModel *m, const double *var);
+void ff_update_lls_fma3(LLSModel *m, const double *var);
+double ff_evaluate_lls_sse2(LLSModel *m, const double *var, int order);
+
+av_cold void ff_init_lls_x86(LLSModel *m)
+{
+    int cpu_flags = av_get_cpu_flags();
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        m->update_lls = ff_update_lls_sse2;
+        if (m->indep_count >= 4)
+            m->evaluate_lls = ff_evaluate_lls_sse2;
+    }
+    if (EXTERNAL_AVX_FAST(cpu_flags)) {
+        m->update_lls = ff_update_lls_avx;
+    }
+    if (EXTERNAL_FMA3_FAST(cpu_flags)) {
+        m->update_lls = ff_update_lls_fma3;
+    }
+}
diff --git a/media/ffvpx/libavutil/x86/moz.build b/media/ffvpx/libavutil/x86/moz.build
new file mode 100644
index 0000000000..b56ed75ead
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/moz.build
@@ -0,0 +1,23 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+SOURCES += [
+    'cpu.c',
+    'cpuid.asm',
+    'emms.asm',
+    'fixed_dsp.asm',
+    'fixed_dsp_init.c',
+    'float_dsp.asm',
+    'float_dsp_init.c',
+    'imgutils.asm',
+    'imgutils_init.c',
+    'lls.asm',
+    'lls_init.c'
+]
+
+FINAL_LIBRARY = 'mozavutil'
+
+include('/media/ffvpx/ffvpxcommon.mozbuild')
diff --git a/media/ffvpx/libavutil/x86/pixelutils.asm b/media/ffvpx/libavutil/x86/pixelutils.asm
new file mode 100644
index 0000000000..36c57c5f7f
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/pixelutils.asm
@@ -0,0 +1,386 @@
+;******************************************************************************
+;* Pixel utilities SIMD
+;*
+;* Copyright (C) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+;* Copyright (C) 2014 Clément Bœsch <u pkh me>
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "x86util.asm"
+
+SECTION .text
+
+;-------------------------------------------------------------------------------
+; int ff_pixelutils_sad_8x8_mmx(const uint8_t *src1, ptrdiff_t stride1,
+;                               const uint8_t *src2, ptrdiff_t stride2);
+;-------------------------------------------------------------------------------
+INIT_MMX mmx
+cglobal pixelutils_sad_8x8, 4,4,0, src1, stride1, src2, stride2
+    pxor        m7, m7
+    pxor        m6, m6
+%rep 4
+    mova        m0, [src1q]
+    mova        m2, [src1q + stride1q]
+    mova        m1, [src2q]
+    mova        m3, [src2q + stride2q]
+    psubusb     m4, m0, m1
+    psubusb     m5, m2, m3
+    psubusb     m1, m0
+    psubusb     m3, m2
+    por         m1, m4
+    por         m3, m5
+    punpcklbw   m0, m1, m7
+    punpcklbw   m2, m3, m7
+    punpckhbw   m1, m7
+    punpckhbw   m3, m7
+    paddw       m0, m1
+    paddw       m2, m3
+    paddw       m0, m2
+    paddw       m6, m0
+    lea         src1q, [src1q + 2*stride1q]
+    lea         src2q, [src2q + 2*stride2q]
+%endrep
+    psrlq       m0, m6, 32
+    paddw       m6, m0
+    psrlq       m0, m6, 16
+    paddw       m6, m0
+    movd        eax, m6
+    movzx       eax, ax
+    RET
+
+;-------------------------------------------------------------------------------
+; int ff_pixelutils_sad_8x8_mmxext(const uint8_t *src1, ptrdiff_t stride1,
+;                                  const uint8_t *src2, ptrdiff_t stride2);
+;-------------------------------------------------------------------------------
+INIT_MMX mmxext
+cglobal pixelutils_sad_8x8, 4,4,0, src1, stride1, src2, stride2
+    pxor        m2, m2
+%rep 4
+    mova        m0, [src1q]
+    mova        m1, [src1q + stride1q]
+    psadbw      m0, [src2q]
+    psadbw      m1, [src2q + stride2q]
+    paddw       m2, m0
+    paddw       m2, m1
+    lea         src1q, [src1q + 2*stride1q]
+    lea         src2q, [src2q + 2*stride2q]
+%endrep
+    movd        eax, m2
+    RET
+
+;-------------------------------------------------------------------------------
+; int ff_pixelutils_sad_16x16_mmxext(const uint8_t *src1, ptrdiff_t stride1,
+;                                    const uint8_t *src2, ptrdiff_t stride2);
+;-------------------------------------------------------------------------------
+INIT_MMX mmxext
+cglobal pixelutils_sad_16x16, 4,4,0, src1, stride1, src2, stride2
+    pxor        m2, m2
+%rep 16
+    mova        m0, [src1q]
+    mova        m1, [src1q + 8]
+    psadbw      m0, [src2q]
+    psadbw      m1, [src2q + 8]
+    paddw       m2, m0
+    paddw       m2, m1
+    add         src1q, stride1q
+    add         src2q, stride2q
+%endrep
+    movd        eax, m2
+    RET
+
+;-------------------------------------------------------------------------------
+; int ff_pixelutils_sad_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
+;                                  const uint8_t *src2, ptrdiff_t stride2);
+;-------------------------------------------------------------------------------
+INIT_XMM sse2
+cglobal pixelutils_sad_16x16, 4,4,5, src1, stride1, src2, stride2
+    movu        m4, [src1q]
+    movu        m2, [src2q]
+    movu        m1, [src1q + stride1q]
+    movu        m3, [src2q + stride2q]
+    psadbw      m4, m2
+    psadbw      m1, m3
+    paddw       m4, m1
+%rep 7
+    lea         src1q, [src1q + 2*stride1q]
+    lea         src2q, [src2q + 2*stride2q]
+    movu        m0, [src1q]
+    movu        m2, [src2q]
+    movu        m1, [src1q + stride1q]
+    movu        m3, [src2q + stride2q]
+    psadbw      m0, m2
+    psadbw      m1, m3
+    paddw       m4, m0
+    paddw       m4, m1
+%endrep
+    movhlps     m0, m4
+    paddw       m4, m0
+    movd        eax, m4
+    RET
+
+;-------------------------------------------------------------------------------
+; int ff_pixelutils_sad_[au]_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
+;                                       const uint8_t *src2, ptrdiff_t stride2);
+;-------------------------------------------------------------------------------
+%macro SAD_XMM_16x16 1
+INIT_XMM sse2
+cglobal pixelutils_sad_%1_16x16, 4,4,3, src1, stride1, src2, stride2
+    mov%1       m2, [src2q]
+    psadbw      m2, [src1q]
+    mov%1       m1, [src2q + stride2q]
+    psadbw      m1, [src1q + stride1q]
+    paddw       m2, m1
+%rep 7
+    lea         src1q, [src1q + 2*stride1q]
+    lea         src2q, [src2q + 2*stride2q]
+    mov%1       m0, [src2q]
+    psadbw      m0, [src1q]
+    mov%1       m1, [src2q + stride2q]
+    psadbw      m1, [src1q + stride1q]
+    paddw       m2, m0
+    paddw       m2, m1
+%endrep
+    movhlps     m0, m2
+    paddw       m2, m0
+    movd        eax, m2
+    RET
+%endmacro
+
+SAD_XMM_16x16 a
+SAD_XMM_16x16 u
+
+
+%macro PROCESS_SAD_32x4_U 0
+    movu    m1,  [r2]
+    movu    m2,  [r2 + 16]
+    movu    m3,  [r0]
+    movu    m4,  [r0 + 16]
+    psadbw  m1,  m3
+    psadbw  m2,  m4
+    paddd   m1,  m2
+    paddd   m0,  m1
+    lea     r2,  [r2 + r3]
+    lea     r0,  [r0 + r1]
+
+    movu    m1,  [r2]
+    movu    m2,  [r2 + 16]
+    movu    m3,  [r0]
+    movu    m4,  [r0 + 16]
+    psadbw  m1,  m3
+    psadbw  m2,  m4
+    paddd   m1,  m2
+    paddd   m0,  m1
+    lea     r2,  [r2 + r3]
+    lea     r0,  [r0 + r1]
+
+    movu    m1,  [r2]
+    movu    m2,  [r2 + 16]
+    movu    m3,  [r0]
+    movu    m4,  [r0 + 16]
+    psadbw  m1,  m3
+    psadbw  m2,  m4
+    paddd   m1,  m2
+    paddd   m0,  m1
+    lea     r2,  [r2 + r3]
+    lea     r0,  [r0 + r1]
+
+    movu    m1,  [r2]
+    movu    m2,  [r2 + 16]
+    movu    m3,  [r0]
+    movu    m4,  [r0 + 16]
+    psadbw  m1,  m3
+    psadbw  m2,  m4
+    paddd   m1,  m2
+    paddd   m0,  m1
+    lea     r2,  [r2 + r3]
+    lea     r0,  [r0 + r1]
+%endmacro
+
+%macro PROCESS_SAD_32x4 1
+    mov%1   m1,  [r2]
+    mov%1   m2,  [r2 + 16]
+    psadbw  m1,  [r0]
+    psadbw  m2,  [r0 + 16]
+    paddd   m1,  m2
+    paddd   m0,  m1
+    lea     r2,  [r2 + r3]
+    lea     r0,  [r0 + r1]
+
+    mov%1   m1,  [r2]
+    mov%1   m2,  [r2 + 16]
+    psadbw  m1,  [r0]
+    psadbw  m2,  [r0 + 16]
+    paddd   m1,  m2
+    paddd   m0,  m1
+    lea     r2,  [r2 + r3]
+    lea     r0,  [r0 + r1]
+
+    mov%1   m1,  [r2]
+    mov%1   m2,  [r2 + 16]
+    psadbw  m1,  [r0]
+    psadbw  m2,  [r0 + 16]
+    paddd   m1,  m2
+    paddd   m0,  m1
+    lea     r2,  [r2 + r3]
+    lea     r0,  [r0 + r1]
+
+    mov%1   m1,  [r2]
+    mov%1   m2,  [r2 + 16]
+    psadbw  m1,  [r0]
+    psadbw  m2,  [r0 + 16]
+    paddd   m1,  m2
+    paddd   m0,  m1
+    lea     r2,  [r2 + r3]
+    lea     r0,  [r0 + r1]
+%endmacro
+
+;-----------------------------------------------------------------------------
+; int ff_pixelutils_sad_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
+;                                  const uint8_t *src2, ptrdiff_t stride2);
+;-----------------------------------------------------------------------------
+INIT_XMM sse2
+cglobal pixelutils_sad_32x32, 4,5,5, src1, stride1, src2, stride2
+    pxor  m0,  m0
+    mov   r4d, 4
+.loop:
+    PROCESS_SAD_32x4_U
+    PROCESS_SAD_32x4_U
+    dec r4d
+    jnz .loop
+
+    movhlps m1,  m0
+    paddd   m0,  m1
+    movd    eax, m0
+    RET
+
+;-------------------------------------------------------------------------------
+; int ff_pixelutils_sad_[au]_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
+;                                       const uint8_t *src2, ptrdiff_t stride2);
+;-------------------------------------------------------------------------------
+%macro SAD_XMM_32x32 1
+INIT_XMM sse2
+cglobal pixelutils_sad_%1_32x32, 4,5,3, src1, stride1, src2, stride2
+    pxor  m0,  m0
+    mov   r4d, 4
+.loop:
+    PROCESS_SAD_32x4 %1
+    PROCESS_SAD_32x4 %1
+    dec r4d
+    jnz .loop
+
+    movhlps m1,  m0
+    paddd   m0,  m1
+    movd    eax, m0
+    RET
+%endmacro
+
+SAD_XMM_32x32 a
+SAD_XMM_32x32 u
+
+%if HAVE_AVX2_EXTERNAL
+;-------------------------------------------------------------------------------
+; int ff_pixelutils_sad_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
+;                                  const uint8_t *src2, ptrdiff_t stride2);
+;-------------------------------------------------------------------------------
+INIT_YMM avx2
+cglobal pixelutils_sad_32x32, 4,7,5, src1, stride1, src2, stride2
+    pxor            m0, m0
+    mov             r4d, 32/4
+    lea             r5, [stride1q * 3]
+    lea             r6, [stride2q * 3]
+
+.loop:
+    movu           m1, [src1q]               ; row 0 of pix0
+    movu           m2, [src2q]               ; row 0 of pix1
+    movu           m3, [src1q + stride1q]    ; row 1 of pix0
+    movu           m4, [src2q + stride2q]    ; row 1 of pix1
+
+    psadbw         m1, m2
+    psadbw         m3, m4
+    paddd          m0, m1
+    paddd          m0, m3
+
+    movu           m1, [src1q + 2 * stride1q] ; row 2 of pix0
+    movu           m2, [src2q + 2 * stride2q] ; row 2 of pix1
+    movu           m3, [src1q + r5]           ; row 3 of pix0
+    movu           m4, [src2q + r6]           ; row 3 of pix1
+
+    psadbw         m1, m2
+    psadbw         m3, m4
+    paddd          m0, m1
+    paddd          m0, m3
+
+    lea            src2q,     [src2q + 4 * stride2q]
+    lea            src1q,     [src1q + 4 * stride1q]
+
+    dec            r4d
+    jnz           .loop
+
+    vextracti128   xm1, m0, 1
+    paddd          xm0, xm1
+    pshufd         xm1, xm0, 2
+    paddd          xm0, xm1
+    movd           eax, xm0
+    RET
+
+;-------------------------------------------------------------------------------
+; int ff_pixelutils_sad_[au]_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
+;                                       const uint8_t *src2, ptrdiff_t stride2);
+;-------------------------------------------------------------------------------
+%macro SAD_AVX2_32x32 1
+INIT_YMM avx2
+cglobal pixelutils_sad_%1_32x32, 4,7,3, src1, stride1, src2, stride2
+    pxor           m0, m0
+    mov            r4d, 32/4
+    lea            r5, [stride1q * 3]
+    lea            r6, [stride2q * 3]
+
+.loop:
+    mov%1          m1, [src2q]                ; row 0 of pix1
+    psadbw         m1, [src1q]
+    mov%1          m2, [src2q + stride2q]     ; row 1 of pix1
+    psadbw         m2, [src1q + stride1q]
+
+    paddd          m0, m1
+    paddd          m0, m2
+
+    mov%1          m1, [src2q + 2 * stride2q] ; row 2 of pix1
+    psadbw         m1, [src1q + 2 * stride1q]
+    mov%1          m2, [src2q + r6]           ; row 3 of pix1
+    psadbw         m2, [src1q + r5]
+
+    paddd          m0, m1
+    paddd          m0, m2
+
+    lea            src2q,     [src2q + 4 * stride2q]
+    lea            src1q,     [src1q + 4 * stride1q]
+
+    dec            r4d
+    jnz           .loop
+
+    vextracti128   xm1, m0, 1
+    paddd          xm0, xm1
+    pshufd         xm1, xm0, 2
+    paddd          xm0, xm1
+    movd           eax, xm0
+    RET
+%endmacro
+
+SAD_AVX2_32x32 a
+SAD_AVX2_32x32 u
+%endif
diff --git a/media/ffvpx/libavutil/x86/pixelutils.h b/media/ffvpx/libavutil/x86/pixelutils.h
new file mode 100644
index 0000000000..876cf46053
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/pixelutils.h
@@ -0,0 +1,26 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_X86_PIXELUTILS_H
+#define AVUTIL_X86_PIXELUTILS_H
+
+#include "libavutil/pixelutils.h"
+
+void ff_pixelutils_sad_init_x86(av_pixelutils_sad_fn *sad, int aligned);
+
+#endif /* AVUTIL_X86_PIXELUTILS_H */
diff --git a/media/ffvpx/libavutil/x86/pixelutils_init.c b/media/ffvpx/libavutil/x86/pixelutils_init.c
new file mode 100644
index 0000000000..184a3a4a9f
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/pixelutils_init.c
@@ -0,0 +1,94 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+
+#include "pixelutils.h"
+#include "cpu.h"
+
+int ff_pixelutils_sad_8x8_mmx(const uint8_t *src1, ptrdiff_t stride1,
+                              const uint8_t *src2, ptrdiff_t stride2);
+int ff_pixelutils_sad_8x8_mmxext(const uint8_t *src1, ptrdiff_t stride1,
+                                 const uint8_t *src2, ptrdiff_t stride2);
+
+int ff_pixelutils_sad_16x16_mmxext(const uint8_t *src1, ptrdiff_t stride1,
+                                   const uint8_t *src2, ptrdiff_t stride2);
+int ff_pixelutils_sad_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
+                                 const uint8_t *src2, ptrdiff_t stride2);
+int ff_pixelutils_sad_a_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
+                                   const uint8_t *src2, ptrdiff_t stride2);
+int ff_pixelutils_sad_u_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
+                                   const uint8_t *src2, ptrdiff_t stride2);
+
+int ff_pixelutils_sad_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
+                                 const uint8_t *src2, ptrdiff_t stride2);
+int ff_pixelutils_sad_a_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
+                                   const uint8_t *src2, ptrdiff_t stride2);
+int ff_pixelutils_sad_u_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
+                                   const uint8_t *src2, ptrdiff_t stride2);
+
+int ff_pixelutils_sad_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
+                                 const uint8_t *src2, ptrdiff_t stride2);
+int ff_pixelutils_sad_a_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
+                                   const uint8_t *src2, ptrdiff_t stride2);
+int ff_pixelutils_sad_u_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
+                                   const uint8_t *src2, ptrdiff_t stride2);
+
+void ff_pixelutils_sad_init_x86(av_pixelutils_sad_fn *sad, int aligned)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (EXTERNAL_MMX(cpu_flags)) {
+        sad[2] = ff_pixelutils_sad_8x8_mmx;
+    }
+
+    // The best way to use SSE2 would be to do 2 SADs in parallel,
+    // but we'd have to modify the pixelutils API to return SIMD functions.
+
+    // It's probably not faster to shuffle data around
+    // to get two lines of 8 pixels into a single 16byte register,
+    // so just use the MMX 8x8 version even when SSE2 is available.
+    if (EXTERNAL_MMXEXT(cpu_flags)) {
+        sad[2] = ff_pixelutils_sad_8x8_mmxext;
+        sad[3] = ff_pixelutils_sad_16x16_mmxext;
+    }
+
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        switch (aligned) {
+        case 0: sad[3] = ff_pixelutils_sad_16x16_sse2;   break; // src1 unaligned, src2 unaligned
+        case 1: sad[3] = ff_pixelutils_sad_u_16x16_sse2; break; // src1   aligned, src2 unaligned
+        case 2: sad[3] = ff_pixelutils_sad_a_16x16_sse2; break; // src1   aligned, src2   aligned
+        }
+    }
+
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        switch (aligned) {
+        case 0: sad[4] = ff_pixelutils_sad_32x32_sse2;   break; // src1 unaligned, src2 unaligned
+        case 1: sad[4] = ff_pixelutils_sad_u_32x32_sse2; break; // src1   aligned, src2 unaligned
+        case 2: sad[4] = ff_pixelutils_sad_a_32x32_sse2; break; // src1   aligned, src2   aligned
+        }
+    }
+
+    if (EXTERNAL_AVX2_FAST(cpu_flags)) {
+        switch (aligned) {
+        case 0: sad[4] = ff_pixelutils_sad_32x32_avx2;   break; // src1 unaligned, src2 unaligned
+        case 1: sad[4] = ff_pixelutils_sad_u_32x32_avx2; break; // src1   aligned, src2 unaligned
+        case 2: sad[4] = ff_pixelutils_sad_a_32x32_avx2; break; // src1   aligned, src2   aligned
+        }
+    }
+}
diff --git a/media/ffvpx/libavutil/x86/timer.h b/media/ffvpx/libavutil/x86/timer.h
new file mode 100644
index 0000000000..4d1e88def0
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/timer.h
@@ -0,0 +1,50 @@
+/*
+ * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_X86_TIMER_H
+#define AVUTIL_X86_TIMER_H
+
+#include <stdint.h>
+
+#if HAVE_INLINE_ASM
+
+#define FF_TIMER_UNITS "decicycles"
+#define AV_READ_TIME read_time
+
+static inline uint64_t read_time(void)
+{
+    uint32_t a, d;
+    __asm__ volatile(
+#if ARCH_X86_64 || defined(__SSE2__)
+                     "lfence \n\t"
+#endif
+                     "rdtsc  \n\t"
+                     : "=a" (a), "=d" (d));
+    return ((uint64_t)d << 32) + a;
+}
+
+#elif HAVE_RDTSC
+
+#include <intrin.h>
+#define AV_READ_TIME __rdtsc
+
+#endif /* HAVE_INLINE_ASM */
+
+#endif /* AVUTIL_X86_TIMER_H */
diff --git a/media/ffvpx/libavutil/x86/x86inc.asm b/media/ffvpx/libavutil/x86/x86inc.asm
new file mode 100644
index 0000000000..5044ee86f0
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/x86inc.asm
@@ -0,0 +1,1701 @@
+;*****************************************************************************
+;* x86inc.asm: x264asm abstraction layer
+;*****************************************************************************
+;* Copyright (C) 2005-2018 x264 project
+;*
+;* Authors: Loren Merritt <lorenm@u.washington.edu>
+;*          Henrik Gramner <henrik@gramner.com>
+;*          Anton Mitrofanov <BugMaster@narod.ru>
+;*          Fiona Glaser <fiona@x264.com>
+;*
+;* Permission to use, copy, modify, and/or distribute this software for any
+;* purpose with or without fee is hereby granted, provided that the above
+;* copyright notice and this permission notice appear in all copies.
+;*
+;* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+;* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+;* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+;* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+;* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+;* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+;* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+;*****************************************************************************
+
+; This is a header file for the x264ASM assembly language, which uses
+; NASM/YASM syntax combined with a large number of macros to provide easy
+; abstraction between different calling conventions (x86_32, win64, linux64).
+; It also has various other useful features to simplify writing the kind of
+; DSP functions that are most often used in x264.
+
+; Unlike the rest of x264, this file is available under an ISC license, as it
+; has significant usefulness outside of x264 and we want it to be available
+; to the largest audience possible.  Of course, if you modify it for your own
+; purposes to add a new feature, we strongly encourage contributing a patch
+; as this feature might be useful for others as well.  Send patches or ideas
+; to x264-devel@videolan.org .
+
+%ifndef private_prefix
+    %define private_prefix x264
+%endif
+
+%ifndef public_prefix
+    %define public_prefix private_prefix
+%endif
+
+%if HAVE_ALIGNED_STACK
+    %define STACK_ALIGNMENT 16
+%endif
+%ifndef STACK_ALIGNMENT
+    %if ARCH_X86_64
+        %define STACK_ALIGNMENT 16
+    %else
+        %define STACK_ALIGNMENT 4
+    %endif
+%endif
+
+%define WIN64  0
+%define UNIX64 0
+%if ARCH_X86_64
+    %ifidn __OUTPUT_FORMAT__,win32
+        %define WIN64  1
+    %elifidn __OUTPUT_FORMAT__,win64
+        %define WIN64  1
+    %elifidn __OUTPUT_FORMAT__,x64
+        %define WIN64  1
+    %else
+        %define UNIX64 1
+    %endif
+%endif
+
+%define FORMAT_ELF 0
+%ifidn __OUTPUT_FORMAT__,elf
+    %define FORMAT_ELF 1
+%elifidn __OUTPUT_FORMAT__,elf32
+    %define FORMAT_ELF 1
+%elifidn __OUTPUT_FORMAT__,elf64
+    %define FORMAT_ELF 1
+%endif
+
+%ifdef PREFIX
+    %define mangle(x) _ %+ x
+%else
+    %define mangle(x) x
+%endif
+
+; aout does not support align=
+; NOTE: This section is out of sync with x264, in order to
+; keep supporting OS/2.
+%macro SECTION_RODATA 0-1 16
+    %ifidn __OUTPUT_FORMAT__,aout
+        SECTION .text
+    %elifidn __OUTPUT_FORMAT__,coff
+        SECTION .text
+    %elifidn __OUTPUT_FORMAT__,win32
+        SECTION .rdata align=%1
+    %elif WIN64
+        SECTION .rdata align=%1
+    %else
+        SECTION .rodata align=%1
+    %endif
+%endmacro
+
+%if WIN64
+    %define PIC
+%elif ARCH_X86_64 == 0
+; x86_32 doesn't require PIC.
+; Some distros prefer shared objects to be PIC, but nothing breaks if
+; the code contains a few textrels, so we'll skip that complexity.
+    %undef PIC
+%endif
+%ifdef PIC
+    default rel
+%endif
+
+%macro CPUNOP 1
+    %if HAVE_CPUNOP
+        CPU %1
+    %endif
+%endmacro
+
+; Macros to eliminate most code duplication between x86_32 and x86_64:
+; Currently this works only for leaf functions which load all their arguments
+; into registers at the start, and make no other use of the stack. Luckily that
+; covers most of x264's asm.
+
+; PROLOGUE:
+; %1 = number of arguments. loads them from stack if needed.
+; %2 = number of registers used. pushes callee-saved regs if needed.
+; %3 = number of xmm registers used. pushes callee-saved xmm regs if needed.
+; %4 = (optional) stack size to be allocated. The stack will be aligned before
+;      allocating the specified stack size. If the required stack alignment is
+;      larger than the known stack alignment the stack will be manually aligned
+;      and an extra register will be allocated to hold the original stack
+;      pointer (to not invalidate r0m etc.). To prevent the use of an extra
+;      register as stack pointer, request a negative stack size.
+; %4+/%5+ = list of names to define to registers
+; PROLOGUE can also be invoked by adding the same options to cglobal
+
+; e.g.
+; cglobal foo, 2,3,7,0x40, dst, src, tmp
+; declares a function (foo) that automatically loads two arguments (dst and
+; src) into registers, uses one additional register (tmp) plus 7 vector
+; registers (m0-m6) and allocates 0x40 bytes of stack space.
+
+; TODO Some functions can use some args directly from the stack. If they're the
+; last args then you can just not declare them, but if they're in the middle
+; we need more flexible macro.
+
+; RET:
+; Pops anything that was pushed by PROLOGUE, and returns.
+
+; REP_RET:
+; Use this instead of RET if it's a branch target.
+
+; registers:
+; rN and rNq are the native-size register holding function argument N
+; rNd, rNw, rNb are dword, word, and byte size
+; rNh is the high 8 bits of the word size
+; rNm is the original location of arg N (a register or on the stack), dword
+; rNmp is native size
+
+%macro DECLARE_REG 2-3
+    %define r%1q %2
+    %define r%1d %2d
+    %define r%1w %2w
+    %define r%1b %2b
+    %define r%1h %2h
+    %define %2q %2
+    %if %0 == 2
+        %define r%1m  %2d
+        %define r%1mp %2
+    %elif ARCH_X86_64 ; memory
+        %define r%1m [rstk + stack_offset + %3]
+        %define r%1mp qword r %+ %1 %+ m
+    %else
+        %define r%1m [rstk + stack_offset + %3]
+        %define r%1mp dword r %+ %1 %+ m
+    %endif
+    %define r%1  %2
+%endmacro
+
+%macro DECLARE_REG_SIZE 3
+    %define r%1q r%1
+    %define e%1q r%1
+    %define r%1d e%1
+    %define e%1d e%1
+    %define r%1w %1
+    %define e%1w %1
+    %define r%1h %3
+    %define e%1h %3
+    %define r%1b %2
+    %define e%1b %2
+    %if ARCH_X86_64 == 0
+        %define r%1 e%1
+    %endif
+%endmacro
+
+DECLARE_REG_SIZE ax, al, ah
+DECLARE_REG_SIZE bx, bl, bh
+DECLARE_REG_SIZE cx, cl, ch
+DECLARE_REG_SIZE dx, dl, dh
+DECLARE_REG_SIZE si, sil, null
+DECLARE_REG_SIZE di, dil, null
+DECLARE_REG_SIZE bp, bpl, null
+
+; t# defines for when per-arch register allocation is more complex than just function arguments
+
+%macro DECLARE_REG_TMP 1-*
+    %assign %%i 0
+    %rep %0
+        CAT_XDEFINE t, %%i, r%1
+        %assign %%i %%i+1
+        %rotate 1
+    %endrep
+%endmacro
+
+%macro DECLARE_REG_TMP_SIZE 0-*
+    %rep %0
+        %define t%1q t%1 %+ q
+        %define t%1d t%1 %+ d
+        %define t%1w t%1 %+ w
+        %define t%1h t%1 %+ h
+        %define t%1b t%1 %+ b
+        %rotate 1
+    %endrep
+%endmacro
+
+DECLARE_REG_TMP_SIZE 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14
+
+%if ARCH_X86_64
+    %define gprsize 8
+%else
+    %define gprsize 4
+%endif
+
+%macro PUSH 1
+    push %1
+    %ifidn rstk, rsp
+        %assign stack_offset stack_offset+gprsize
+    %endif
+%endmacro
+
+%macro POP 1
+    pop %1
+    %ifidn rstk, rsp
+        %assign stack_offset stack_offset-gprsize
+    %endif
+%endmacro
+
+%macro PUSH_IF_USED 1-*
+    %rep %0
+        %if %1 < regs_used
+            PUSH r%1
+        %endif
+        %rotate 1
+    %endrep
+%endmacro
+
+%macro POP_IF_USED 1-*
+    %rep %0
+        %if %1 < regs_used
+            pop r%1
+        %endif
+        %rotate 1
+    %endrep
+%endmacro
+
+%macro LOAD_IF_USED 1-*
+    %rep %0
+        %if %1 < num_args
+            mov r%1, r %+ %1 %+ mp
+        %endif
+        %rotate 1
+    %endrep
+%endmacro
+
+%macro SUB 2
+    sub %1, %2
+    %ifidn %1, rstk
+        %assign stack_offset stack_offset+(%2)
+    %endif
+%endmacro
+
+%macro ADD 2
+    add %1, %2
+    %ifidn %1, rstk
+        %assign stack_offset stack_offset-(%2)
+    %endif
+%endmacro
+
+%macro movifnidn 2
+    %ifnidn %1, %2
+        mov %1, %2
+    %endif
+%endmacro
+
+%macro movsxdifnidn 2
+    %ifnidn %1, %2
+        movsxd %1, %2
+    %endif
+%endmacro
+
+%macro ASSERT 1
+    %if (%1) == 0
+        %error assertion ``%1'' failed
+    %endif
+%endmacro
+
+%macro DEFINE_ARGS 0-*
+    %ifdef n_arg_names
+        %assign %%i 0
+        %rep n_arg_names
+            CAT_UNDEF arg_name %+ %%i, q
+            CAT_UNDEF arg_name %+ %%i, d
+            CAT_UNDEF arg_name %+ %%i, w
+            CAT_UNDEF arg_name %+ %%i, h
+            CAT_UNDEF arg_name %+ %%i, b
+            CAT_UNDEF arg_name %+ %%i, m
+            CAT_UNDEF arg_name %+ %%i, mp
+            CAT_UNDEF arg_name, %%i
+            %assign %%i %%i+1
+        %endrep
+    %endif
+
+    %xdefine %%stack_offset stack_offset
+    %undef stack_offset ; so that the current value of stack_offset doesn't get baked in by xdefine
+    %assign %%i 0
+    %rep %0
+        %xdefine %1q r %+ %%i %+ q
+        %xdefine %1d r %+ %%i %+ d
+        %xdefine %1w r %+ %%i %+ w
+        %xdefine %1h r %+ %%i %+ h
+        %xdefine %1b r %+ %%i %+ b
+        %xdefine %1m r %+ %%i %+ m
+        %xdefine %1mp r %+ %%i %+ mp
+        CAT_XDEFINE arg_name, %%i, %1
+        %assign %%i %%i+1
+        %rotate 1
+    %endrep
+    %xdefine stack_offset %%stack_offset
+    %assign n_arg_names %0
+%endmacro
+
+%define required_stack_alignment ((mmsize + 15) & ~15)
+%define vzeroupper_required (mmsize > 16 && (ARCH_X86_64 == 0 || xmm_regs_used > 16 || notcpuflag(avx512)))
+%define high_mm_regs (16*cpuflag(avx512))
+
+%macro ALLOC_STACK 1-2 0 ; stack_size, n_xmm_regs (for win64 only)
+    %ifnum %1
+        %if %1 != 0
+            %assign %%pad 0
+            %assign stack_size %1
+            %if stack_size < 0
+                %assign stack_size -stack_size
+            %endif
+            %if WIN64
+                %assign %%pad %%pad + 32 ; shadow space
+                %if mmsize != 8
+                    %assign xmm_regs_used %2
+                    %if xmm_regs_used > 8
+                        %assign %%pad %%pad + (xmm_regs_used-8)*16 ; callee-saved xmm registers
+                    %endif
+                %endif
+            %endif
+            %if required_stack_alignment <= STACK_ALIGNMENT
+                ; maintain the current stack alignment
+                %assign stack_size_padded stack_size + %%pad + ((-%%pad-stack_offset-gprsize) & (STACK_ALIGNMENT-1))
+                SUB rsp, stack_size_padded
+            %else
+                %assign %%reg_num (regs_used - 1)
+                %xdefine rstk r %+ %%reg_num
+                ; align stack, and save original stack location directly above
+                ; it, i.e. in [rsp+stack_size_padded], so we can restore the
+                ; stack in a single instruction (i.e. mov rsp, rstk or mov
+                ; rsp, [rsp+stack_size_padded])
+                %if %1 < 0 ; need to store rsp on stack
+                    %xdefine rstkm [rsp + stack_size + %%pad]
+                    %assign %%pad %%pad + gprsize
+                %else ; can keep rsp in rstk during whole function
+                    %xdefine rstkm rstk
+                %endif
+                %assign stack_size_padded stack_size + ((%%pad + required_stack_alignment-1) & ~(required_stack_alignment-1))
+                mov rstk, rsp
+                and rsp, ~(required_stack_alignment-1)
+                sub rsp, stack_size_padded
+                movifnidn rstkm, rstk
+            %endif
+            WIN64_PUSH_XMM
+        %endif
+    %endif
+%endmacro
+
+%macro SETUP_STACK_POINTER 1
+    %ifnum %1
+        %if %1 != 0 && required_stack_alignment > STACK_ALIGNMENT
+            %if %1 > 0
+                ; Reserve an additional register for storing the original stack pointer, but avoid using
+                ; eax/rax for this purpose since it can potentially get overwritten as a return value.
+                %assign regs_used (regs_used + 1)
+                %if ARCH_X86_64 && regs_used == 7
+                    %assign regs_used 8
+                %elif ARCH_X86_64 == 0 && regs_used == 1
+                    %assign regs_used 2
+                %endif
+            %endif
+            %if ARCH_X86_64 && regs_used < 5 + UNIX64 * 3
+                ; Ensure that we don't clobber any registers containing arguments. For UNIX64 we also preserve r6 (rax)
+                ; since it's used as a hidden argument in vararg functions to specify the number of vector registers used.
+                %assign regs_used 5 + UNIX64 * 3
+            %endif
+        %endif
+    %endif
+%endmacro
+
+%macro DEFINE_ARGS_INTERNAL 3+
+    %ifnum %2
+        DEFINE_ARGS %3
+    %elif %1 == 4
+        DEFINE_ARGS %2
+    %elif %1 > 4
+        DEFINE_ARGS %2, %3
+    %endif
+%endmacro
+
+%if WIN64 ; Windows x64 ;=================================================
+
+DECLARE_REG 0,  rcx
+DECLARE_REG 1,  rdx
+DECLARE_REG 2,  R8
+DECLARE_REG 3,  R9
+DECLARE_REG 4,  R10, 40
+DECLARE_REG 5,  R11, 48
+DECLARE_REG 6,  rax, 56
+DECLARE_REG 7,  rdi, 64
+DECLARE_REG 8,  rsi, 72
+DECLARE_REG 9,  rbx, 80
+DECLARE_REG 10, rbp, 88
+DECLARE_REG 11, R14, 96
+DECLARE_REG 12, R15, 104
+DECLARE_REG 13, R12, 112
+DECLARE_REG 14, R13, 120
+
+%macro PROLOGUE 2-5+ 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
+    %assign num_args %1
+    %assign regs_used %2
+    ASSERT regs_used >= num_args
+    SETUP_STACK_POINTER %4
+    ASSERT regs_used <= 15
+    PUSH_IF_USED 7, 8, 9, 10, 11, 12, 13, 14
+    ALLOC_STACK %4, %3
+    %if mmsize != 8 && stack_size == 0
+        WIN64_SPILL_XMM %3
+    %endif
+    LOAD_IF_USED 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
+    DEFINE_ARGS_INTERNAL %0, %4, %5
+%endmacro
+
+%macro WIN64_PUSH_XMM 0
+    ; Use the shadow space to store XMM6 and XMM7, the rest needs stack space allocated.
+    %if xmm_regs_used > 6 + high_mm_regs
+        movaps [rstk + stack_offset +  8], xmm6
+    %endif
+    %if xmm_regs_used > 7 + high_mm_regs
+        movaps [rstk + stack_offset + 24], xmm7
+    %endif
+    %assign %%xmm_regs_on_stack xmm_regs_used - high_mm_regs - 8
+    %if %%xmm_regs_on_stack > 0
+        %assign %%i 8
+        %rep %%xmm_regs_on_stack
+            movaps [rsp + (%%i-8)*16 + stack_size + 32], xmm %+ %%i
+            %assign %%i %%i+1
+        %endrep
+    %endif
+%endmacro
+
+%macro WIN64_SPILL_XMM 1
+    %assign xmm_regs_used %1
+    ASSERT xmm_regs_used <= 16 + high_mm_regs
+    %assign %%xmm_regs_on_stack xmm_regs_used - high_mm_regs - 8
+    %if %%xmm_regs_on_stack > 0
+        ; Allocate stack space for callee-saved xmm registers plus shadow space and align the stack.
+        %assign %%pad %%xmm_regs_on_stack*16 + 32
+        %assign stack_size_padded %%pad + ((-%%pad-stack_offset-gprsize) & (STACK_ALIGNMENT-1))
+        SUB rsp, stack_size_padded
+    %endif
+    WIN64_PUSH_XMM
+%endmacro
+
+%macro WIN64_RESTORE_XMM_INTERNAL 0
+    %assign %%pad_size 0
+    %assign %%xmm_regs_on_stack xmm_regs_used - high_mm_regs - 8
+    %if %%xmm_regs_on_stack > 0
+        %assign %%i xmm_regs_used - high_mm_regs
+        %rep %%xmm_regs_on_stack
+            %assign %%i %%i-1
+            movaps xmm %+ %%i, [rsp + (%%i-8)*16 + stack_size + 32]
+        %endrep
+    %endif
+    %if stack_size_padded > 0
+        %if stack_size > 0 && required_stack_alignment > STACK_ALIGNMENT
+            mov rsp, rstkm
+        %else
+            add rsp, stack_size_padded
+            %assign %%pad_size stack_size_padded
+        %endif
+    %endif
+    %if xmm_regs_used > 7 + high_mm_regs
+        movaps xmm7, [rsp + stack_offset - %%pad_size + 24]
+    %endif
+    %if xmm_regs_used > 6 + high_mm_regs
+        movaps xmm6, [rsp + stack_offset - %%pad_size +  8]
+    %endif
+%endmacro
+
+%macro WIN64_RESTORE_XMM 0
+    WIN64_RESTORE_XMM_INTERNAL
+    %assign stack_offset (stack_offset-stack_size_padded)
+    %assign stack_size_padded 0
+    %assign xmm_regs_used 0
+%endmacro
+
+%define has_epilogue regs_used > 7 || stack_size > 0 || vzeroupper_required || xmm_regs_used > 6+high_mm_regs
+
+%macro RET 0
+    WIN64_RESTORE_XMM_INTERNAL
+    POP_IF_USED 14, 13, 12, 11, 10, 9, 8, 7
+    %if vzeroupper_required
+        vzeroupper
+    %endif
+    AUTO_REP_RET
+%endmacro
+
+%elif ARCH_X86_64 ; *nix x64 ;=============================================
+
+DECLARE_REG 0,  rdi
+DECLARE_REG 1,  rsi
+DECLARE_REG 2,  rdx
+DECLARE_REG 3,  rcx
+DECLARE_REG 4,  R8
+DECLARE_REG 5,  R9
+DECLARE_REG 6,  rax, 8
+DECLARE_REG 7,  R10, 16
+DECLARE_REG 8,  R11, 24
+DECLARE_REG 9,  rbx, 32
+DECLARE_REG 10, rbp, 40
+DECLARE_REG 11, R14, 48
+DECLARE_REG 12, R15, 56
+DECLARE_REG 13, R12, 64
+DECLARE_REG 14, R13, 72
+
+%macro PROLOGUE 2-5+ 0 ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
+    %assign num_args %1
+    %assign regs_used %2
+    %assign xmm_regs_used %3
+    ASSERT regs_used >= num_args
+    SETUP_STACK_POINTER %4
+    ASSERT regs_used <= 15
+    PUSH_IF_USED 9, 10, 11, 12, 13, 14
+    ALLOC_STACK %4
+    LOAD_IF_USED 6, 7, 8, 9, 10, 11, 12, 13, 14
+    DEFINE_ARGS_INTERNAL %0, %4, %5
+%endmacro
+
+%define has_epilogue regs_used > 9 || stack_size > 0 || vzeroupper_required
+
+%macro RET 0
+    %if stack_size_padded > 0
+        %if required_stack_alignment > STACK_ALIGNMENT
+            mov rsp, rstkm
+        %else
+            add rsp, stack_size_padded
+        %endif
+    %endif
+    POP_IF_USED 14, 13, 12, 11, 10, 9
+    %if vzeroupper_required
+        vzeroupper
+    %endif
+    AUTO_REP_RET
+%endmacro
+
+%else ; X86_32 ;==============================================================
+
+DECLARE_REG 0, eax, 4
+DECLARE_REG 1, ecx, 8
+DECLARE_REG 2, edx, 12
+DECLARE_REG 3, ebx, 16
+DECLARE_REG 4, esi, 20
+DECLARE_REG 5, edi, 24
+DECLARE_REG 6, ebp, 28
+%define rsp esp
+
+%macro DECLARE_ARG 1-*
+    %rep %0
+        %define r%1m [rstk + stack_offset + 4*%1 + 4]
+        %define r%1mp dword r%1m
+        %rotate 1
+    %endrep
+%endmacro
+
+DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14
+
+%macro PROLOGUE 2-5+ ; #args, #regs, #xmm_regs, [stack_size,] arg_names...
+    %assign num_args %1
+    %assign regs_used %2
+    ASSERT regs_used >= num_args
+    %if num_args > 7
+        %assign num_args 7
+    %endif
+    %if regs_used > 7
+        %assign regs_used 7
+    %endif
+    SETUP_STACK_POINTER %4
+    ASSERT regs_used <= 7
+    PUSH_IF_USED 3, 4, 5, 6
+    ALLOC_STACK %4
+    LOAD_IF_USED 0, 1, 2, 3, 4, 5, 6
+    DEFINE_ARGS_INTERNAL %0, %4, %5
+%endmacro
+
+%define has_epilogue regs_used > 3 || stack_size > 0 || vzeroupper_required
+
+%macro RET 0
+    %if stack_size_padded > 0
+        %if required_stack_alignment > STACK_ALIGNMENT
+            mov rsp, rstkm
+        %else
+            add rsp, stack_size_padded
+        %endif
+    %endif
+    POP_IF_USED 6, 5, 4, 3
+    %if vzeroupper_required
+        vzeroupper
+    %endif
+    AUTO_REP_RET
+%endmacro
+
+%endif ;======================================================================
+
+%if WIN64 == 0
+    %macro WIN64_SPILL_XMM 1
+    %endmacro
+    %macro WIN64_RESTORE_XMM 0
+    %endmacro
+    %macro WIN64_PUSH_XMM 0
+    %endmacro
+%endif
+
+; On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either
+; a branch or a branch target. So switch to a 2-byte form of ret in that case.
+; We can automatically detect "follows a branch", but not a branch target.
+; (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.)
+%macro REP_RET 0
+    %if has_epilogue || cpuflag(ssse3)
+        RET
+    %else
+        rep ret
+    %endif
+    annotate_function_size
+%endmacro
+
+%define last_branch_adr $$
+%macro AUTO_REP_RET 0
+    %if notcpuflag(ssse3)
+        times ((last_branch_adr-$)>>31)+1 rep ; times 1 iff $ == last_branch_adr.
+    %endif
+    ret
+    annotate_function_size
+%endmacro
+
+%macro BRANCH_INSTR 0-*
+    %rep %0
+        %macro %1 1-2 %1
+            %2 %1
+            %if notcpuflag(ssse3)
+                %%branch_instr equ $
+                %xdefine last_branch_adr %%branch_instr
+            %endif
+        %endmacro
+        %rotate 1
+    %endrep
+%endmacro
+
+BRANCH_INSTR jz, je, jnz, jne, jl, jle, jnl, jnle, jg, jge, jng, jnge, ja, jae, jna, jnae, jb, jbe, jnb, jnbe, jc, jnc, js, jns, jo, jno, jp, jnp
+
+%macro TAIL_CALL 2 ; callee, is_nonadjacent
+    %if has_epilogue
+        call %1
+        RET
+    %elif %2
+        jmp %1
+    %endif
+    annotate_function_size
+%endmacro
+
+;=============================================================================
+; arch-independent part
+;=============================================================================
+
+%assign function_align 16
+
+; Begin a function.
+; Applies any symbol mangling needed for C linkage, and sets up a define such that
+; subsequent uses of the function name automatically refer to the mangled version.
+; Appends cpuflags to the function name if cpuflags has been specified.
+; The "" empty default parameter is a workaround for nasm, which fails if SUFFIX
+; is empty and we call cglobal_internal with just %1 %+ SUFFIX (without %2).
+%macro cglobal 1-2+ "" ; name, [PROLOGUE args]
+    cglobal_internal 1, %1 %+ SUFFIX, %2
+%endmacro
+%macro cvisible 1-2+ "" ; name, [PROLOGUE args]
+    cglobal_internal 0, %1 %+ SUFFIX, %2
+%endmacro
+%macro cglobal_internal 2-3+
+    annotate_function_size
+    %if %1
+        %xdefine %%FUNCTION_PREFIX private_prefix
+        %xdefine %%VISIBILITY hidden
+    %else
+        %xdefine %%FUNCTION_PREFIX public_prefix
+        %xdefine %%VISIBILITY
+    %endif
+    %ifndef cglobaled_%2
+        %xdefine %2 mangle(%%FUNCTION_PREFIX %+ _ %+ %2)
+        %xdefine %2.skip_prologue %2 %+ .skip_prologue
+        CAT_XDEFINE cglobaled_, %2, 1
+    %endif
+    %xdefine current_function %2
+    %xdefine current_function_section __SECT__
+    %if FORMAT_ELF
+        global %2:function %%VISIBILITY
+    %else
+        global %2
+    %endif
+    align function_align
+    %2:
+    RESET_MM_PERMUTATION        ; needed for x86-64, also makes disassembly somewhat nicer
+    %xdefine rstk rsp           ; copy of the original stack pointer, used when greater alignment than the known stack alignment is required
+    %assign stack_offset 0      ; stack pointer offset relative to the return address
+    %assign stack_size 0        ; amount of stack space that can be freely used inside a function
+    %assign stack_size_padded 0 ; total amount of allocated stack space, including space for callee-saved xmm registers on WIN64 and alignment padding
+    %assign xmm_regs_used 0     ; number of XMM registers requested, used for dealing with callee-saved registers on WIN64 and vzeroupper
+    %ifnidn %3, ""
+        PROLOGUE %3
+    %endif
+%endmacro
+
+; Create a global symbol from a local label with the correct name mangling and type
+%macro cglobal_label 1
+    %if FORMAT_ELF
+        global current_function %+ %1:function hidden
+    %else
+        global current_function %+ %1
+    %endif
+    %1:
+%endmacro
+
+%macro cextern 1
+    %xdefine %1 mangle(private_prefix %+ _ %+ %1)
+    CAT_XDEFINE cglobaled_, %1, 1
+    extern %1
+%endmacro
+
+; like cextern, but without the prefix
+%macro cextern_naked 1
+    %ifdef PREFIX
+        %xdefine %1 mangle(%1)
+    %endif
+    CAT_XDEFINE cglobaled_, %1, 1
+    extern %1
+%endmacro
+
+%macro const 1-2+
+    %xdefine %1 mangle(private_prefix %+ _ %+ %1)
+    %if FORMAT_ELF
+        global %1:data hidden
+    %else
+        global %1
+    %endif
+    %1: %2
+%endmacro
+
+; This is needed for ELF, otherwise the GNU linker assumes the stack is executable by default.
+%if FORMAT_ELF
+    [SECTION .note.GNU-stack noalloc noexec nowrite progbits]
+%endif
+
+; Tell debuggers how large the function was.
+; This may be invoked multiple times per function; we rely on later instances overriding earlier ones.
+; This is invoked by RET and similar macros, and also cglobal does it for the previous function,
+; but if the last function in a source file doesn't use any of the standard macros for its epilogue,
+; then its size might be unspecified.
+%macro annotate_function_size 0
+    %ifdef __YASM_VER__
+        %ifdef current_function
+            %if FORMAT_ELF
+                current_function_section
+                %%ecf equ $
+                size current_function %%ecf - current_function
+                __SECT__
+            %endif
+        %endif
+    %endif
+%endmacro
+
+; cpuflags
+
+%assign cpuflags_mmx      (1<<0)
+%assign cpuflags_mmx2     (1<<1) | cpuflags_mmx
+%assign cpuflags_3dnow    (1<<2) | cpuflags_mmx
+%assign cpuflags_3dnowext (1<<3) | cpuflags_3dnow
+%assign cpuflags_sse      (1<<4) | cpuflags_mmx2
+%assign cpuflags_sse2     (1<<5) | cpuflags_sse
+%assign cpuflags_sse2slow (1<<6) | cpuflags_sse2
+%assign cpuflags_lzcnt    (1<<7) | cpuflags_sse2
+%assign cpuflags_sse3     (1<<8) | cpuflags_sse2
+%assign cpuflags_ssse3    (1<<9) | cpuflags_sse3
+%assign cpuflags_sse4     (1<<10)| cpuflags_ssse3
+%assign cpuflags_sse42    (1<<11)| cpuflags_sse4
+%assign cpuflags_aesni    (1<<12)| cpuflags_sse42
+%assign cpuflags_avx      (1<<13)| cpuflags_sse42
+%assign cpuflags_xop      (1<<14)| cpuflags_avx
+%assign cpuflags_fma4     (1<<15)| cpuflags_avx
+%assign cpuflags_fma3     (1<<16)| cpuflags_avx
+%assign cpuflags_bmi1     (1<<17)| cpuflags_avx|cpuflags_lzcnt
+%assign cpuflags_bmi2     (1<<18)| cpuflags_bmi1
+%assign cpuflags_avx2     (1<<19)| cpuflags_fma3|cpuflags_bmi2
+%assign cpuflags_avx512   (1<<20)| cpuflags_avx2 ; F, CD, BW, DQ, VL
+
+%assign cpuflags_cache32  (1<<21)
+%assign cpuflags_cache64  (1<<22)
+%assign cpuflags_aligned  (1<<23) ; not a cpu feature, but a function variant
+%assign cpuflags_atom     (1<<24)
+
+; Returns a boolean value expressing whether or not the specified cpuflag is enabled.
+%define    cpuflag(x) (((((cpuflags & (cpuflags_ %+ x)) ^ (cpuflags_ %+ x)) - 1) >> 31) & 1)
+%define notcpuflag(x) (cpuflag(x) ^ 1)
+
+; Takes an arbitrary number of cpuflags from the above list.
+; All subsequent functions (up to the next INIT_CPUFLAGS) is built for the specified cpu.
+; You shouldn't need to invoke this macro directly, it's a subroutine for INIT_MMX &co.
+%macro INIT_CPUFLAGS 0-*
+    %xdefine SUFFIX
+    %undef cpuname
+    %assign cpuflags 0
+
+    %if %0 >= 1
+        %rep %0
+            %ifdef cpuname
+                %xdefine cpuname cpuname %+ _%1
+            %else
+                %xdefine cpuname %1
+            %endif
+            %assign cpuflags cpuflags | cpuflags_%1
+            %rotate 1
+        %endrep
+        %xdefine SUFFIX _ %+ cpuname
+
+        %if cpuflag(avx)
+            %assign avx_enabled 1
+        %endif
+        %if (mmsize == 16 && notcpuflag(sse2)) || (mmsize == 32 && notcpuflag(avx2))
+            %define mova movaps
+            %define movu movups
+            %define movnta movntps
+        %endif
+        %if cpuflag(aligned)
+            %define movu mova
+        %elif cpuflag(sse3) && notcpuflag(ssse3)
+            %define movu lddqu
+        %endif
+    %endif
+
+    %if ARCH_X86_64 || cpuflag(sse2)
+        CPUNOP amdnop
+    %else
+        CPUNOP basicnop
+    %endif
+%endmacro
+
+; Merge mmx, sse*, and avx*
+; m# is a simd register of the currently selected size
+; xm# is the corresponding xmm register if mmsize >= 16, otherwise the same as m#
+; ym# is the corresponding ymm register if mmsize >= 32, otherwise the same as m#
+; zm# is the corresponding zmm register if mmsize >= 64, otherwise the same as m#
+; (All 4 remain in sync through SWAP.)
+
+%macro CAT_XDEFINE 3
+    %xdefine %1%2 %3
+%endmacro
+
+%macro CAT_UNDEF 2
+    %undef %1%2
+%endmacro
+
+%macro DEFINE_MMREGS 1 ; mmtype
+    %assign %%prev_mmregs 0
+    %ifdef num_mmregs
+        %assign %%prev_mmregs num_mmregs
+    %endif
+
+    %assign num_mmregs 8
+    %if ARCH_X86_64 && mmsize >= 16
+        %assign num_mmregs 16
+        %if cpuflag(avx512) || mmsize == 64
+            %assign num_mmregs 32
+        %endif
+    %endif
+
+    %assign %%i 0
+    %rep num_mmregs
+        CAT_XDEFINE m, %%i, %1 %+ %%i
+        CAT_XDEFINE nn%1, %%i, %%i
+        %assign %%i %%i+1
+    %endrep
+    %if %%prev_mmregs > num_mmregs
+        %rep %%prev_mmregs - num_mmregs
+            CAT_UNDEF m, %%i
+            CAT_UNDEF nn %+ mmtype, %%i
+            %assign %%i %%i+1
+        %endrep
+    %endif
+    %xdefine mmtype %1
+%endmacro
+
+; Prefer registers 16-31 over 0-15 to avoid having to use vzeroupper
+%macro AVX512_MM_PERMUTATION 0-1 0 ; start_reg
+    %if ARCH_X86_64 && cpuflag(avx512)
+        %assign %%i %1
+        %rep 16-%1
+            %assign %%i_high %%i+16
+            SWAP %%i, %%i_high
+            %assign %%i %%i+1
+        %endrep
+    %endif
+%endmacro
+
+%macro INIT_MMX 0-1+
+    %assign avx_enabled 0
+    %define RESET_MM_PERMUTATION INIT_MMX %1
+    %define mmsize 8
+    %define mova movq
+    %define movu movq
+    %define movh movd
+    %define movnta movntq
+    INIT_CPUFLAGS %1
+    DEFINE_MMREGS mm
+%endmacro
+
+%macro INIT_XMM 0-1+
+    %assign avx_enabled 0
+    %define RESET_MM_PERMUTATION INIT_XMM %1
+    %define mmsize 16
+    %define mova movdqa
+    %define movu movdqu
+    %define movh movq
+    %define movnta movntdq
+    INIT_CPUFLAGS %1
+    DEFINE_MMREGS xmm
+    %if WIN64
+        AVX512_MM_PERMUTATION 6 ; Swap callee-saved registers with volatile registers
+    %endif
+%endmacro
+
+%macro INIT_YMM 0-1+
+    %assign avx_enabled 1
+    %define RESET_MM_PERMUTATION INIT_YMM %1
+    %define mmsize 32
+    %define mova movdqa
+    %define movu movdqu
+    %undef movh
+    %define movnta movntdq
+    INIT_CPUFLAGS %1
+    DEFINE_MMREGS ymm
+    AVX512_MM_PERMUTATION
+%endmacro
+
+%macro INIT_ZMM 0-1+
+    %assign avx_enabled 1
+    %define RESET_MM_PERMUTATION INIT_ZMM %1
+    %define mmsize 64
+    %define mova movdqa
+    %define movu movdqu
+    %undef movh
+    %define movnta movntdq
+    INIT_CPUFLAGS %1
+    DEFINE_MMREGS zmm
+    AVX512_MM_PERMUTATION
+%endmacro
+
+INIT_XMM
+
+%macro DECLARE_MMCAST 1
+    %define  mmmm%1   mm%1
+    %define  mmxmm%1  mm%1
+    %define  mmymm%1  mm%1
+    %define  mmzmm%1  mm%1
+    %define xmmmm%1   mm%1
+    %define xmmxmm%1 xmm%1
+    %define xmmymm%1 xmm%1
+    %define xmmzmm%1 xmm%1
+    %define ymmmm%1   mm%1
+    %define ymmxmm%1 xmm%1
+    %define ymmymm%1 ymm%1
+    %define ymmzmm%1 ymm%1
+    %define zmmmm%1   mm%1
+    %define zmmxmm%1 xmm%1
+    %define zmmymm%1 ymm%1
+    %define zmmzmm%1 zmm%1
+    %define xm%1 xmm %+ m%1
+    %define ym%1 ymm %+ m%1
+    %define zm%1 zmm %+ m%1
+%endmacro
+
+%assign i 0
+%rep 32
+    DECLARE_MMCAST i
+    %assign i i+1
+%endrep
+
+; I often want to use macros that permute their arguments. e.g. there's no
+; efficient way to implement butterfly or transpose or dct without swapping some
+; arguments.
+;
+; I would like to not have to manually keep track of the permutations:
+; If I insert a permutation in the middle of a function, it should automatically
+; change everything that follows. For more complex macros I may also have multiple
+; implementations, e.g. the SSE2 and SSSE3 versions may have different permutations.
+;
+; Hence these macros. Insert a PERMUTE or some SWAPs at the end of a macro that
+; permutes its arguments. It's equivalent to exchanging the contents of the
+; registers, except that this way you exchange the register names instead, so it
+; doesn't cost any cycles.
+
+%macro PERMUTE 2-* ; takes a list of pairs to swap
+    %rep %0/2
+        %xdefine %%tmp%2 m%2
+        %rotate 2
+    %endrep
+    %rep %0/2
+        %xdefine m%1 %%tmp%2
+        CAT_XDEFINE nn, m%1, %1
+        %rotate 2
+    %endrep
+%endmacro
+
+%macro SWAP 2+ ; swaps a single chain (sometimes more concise than pairs)
+    %ifnum %1 ; SWAP 0, 1, ...
+        SWAP_INTERNAL_NUM %1, %2
+    %else ; SWAP m0, m1, ...
+        SWAP_INTERNAL_NAME %1, %2
+    %endif
+%endmacro
+
+%macro SWAP_INTERNAL_NUM 2-*
+    %rep %0-1
+        %xdefine %%tmp m%1
+        %xdefine m%1 m%2
+        %xdefine m%2 %%tmp
+        CAT_XDEFINE nn, m%1, %1
+        CAT_XDEFINE nn, m%2, %2
+        %rotate 1
+    %endrep
+%endmacro
+
+%macro SWAP_INTERNAL_NAME 2-*
+    %xdefine %%args nn %+ %1
+    %rep %0-1
+        %xdefine %%args %%args, nn %+ %2
+        %rotate 1
+    %endrep
+    SWAP_INTERNAL_NUM %%args
+%endmacro
+
+; If SAVE_MM_PERMUTATION is placed at the end of a function, then any later
+; calls to that function will automatically load the permutation, so values can
+; be returned in mmregs.
+%macro SAVE_MM_PERMUTATION 0-1
+    %if %0
+        %xdefine %%f %1_m
+    %else
+        %xdefine %%f current_function %+ _m
+    %endif
+    %assign %%i 0
+    %rep num_mmregs
+        CAT_XDEFINE %%f, %%i, m %+ %%i
+        %assign %%i %%i+1
+    %endrep
+%endmacro
+
+%macro LOAD_MM_PERMUTATION 1 ; name to load from
+    %ifdef %1_m0
+        %assign %%i 0
+        %rep num_mmregs
+            CAT_XDEFINE m, %%i, %1_m %+ %%i
+            CAT_XDEFINE nn, m %+ %%i, %%i
+            %assign %%i %%i+1
+        %endrep
+    %endif
+%endmacro
+
+; Append cpuflags to the callee's name iff the appended name is known and the plain name isn't
+%macro call 1
+    %ifid %1
+        call_internal %1 %+ SUFFIX, %1
+    %else
+        call %1
+    %endif
+%endmacro
+%macro call_internal 2
+    %xdefine %%i %2
+    %ifndef cglobaled_%2
+        %ifdef cglobaled_%1
+            %xdefine %%i %1
+        %endif
+    %endif
+    call %%i
+    LOAD_MM_PERMUTATION %%i
+%endmacro
+
+; Substitutions that reduce instruction size but are functionally equivalent
+%macro add 2
+    %ifnum %2
+        %if %2==128
+            sub %1, -128
+        %else
+            add %1, %2
+        %endif
+    %else
+        add %1, %2
+    %endif
+%endmacro
+
+%macro sub 2
+    %ifnum %2
+        %if %2==128
+            add %1, -128
+        %else
+            sub %1, %2
+        %endif
+    %else
+        sub %1, %2
+    %endif
+%endmacro
+
+;=============================================================================
+; AVX abstraction layer
+;=============================================================================
+
+%assign i 0
+%rep 32
+    %if i < 8
+        CAT_XDEFINE sizeofmm, i, 8
+        CAT_XDEFINE regnumofmm, i, i
+    %endif
+    CAT_XDEFINE sizeofxmm, i, 16
+    CAT_XDEFINE sizeofymm, i, 32
+    CAT_XDEFINE sizeofzmm, i, 64
+    CAT_XDEFINE regnumofxmm, i, i
+    CAT_XDEFINE regnumofymm, i, i
+    CAT_XDEFINE regnumofzmm, i, i
+    %assign i i+1
+%endrep
+%undef i
+
+%macro CHECK_AVX_INSTR_EMU 3-*
+    %xdefine %%opcode %1
+    %xdefine %%dst %2
+    %rep %0-2
+        %ifidn %%dst, %3
+            %error non-avx emulation of ``%%opcode'' is not supported
+        %endif
+        %rotate 1
+    %endrep
+%endmacro
+
+;%1 == instruction
+;%2 == minimal instruction set
+;%3 == 1 if float, 0 if int
+;%4 == 1 if 4-operand emulation, 0 if 3-operand emulation, 255 otherwise (no emulation)
+;%5 == 1 if commutative (i.e. doesn't matter which src arg is which), 0 if not
+;%6+: operands
+%macro RUN_AVX_INSTR 6-9+
+    %ifnum sizeof%7
+        %assign __sizeofreg sizeof%7
+    %elifnum sizeof%6
+        %assign __sizeofreg sizeof%6
+    %else
+        %assign __sizeofreg mmsize
+    %endif
+    %assign __emulate_avx 0
+    %if avx_enabled && __sizeofreg >= 16
+        %xdefine __instr v%1
+    %else
+        %xdefine __instr %1
+        %if %0 >= 8+%4
+            %assign __emulate_avx 1
+        %endif
+    %endif
+    %ifnidn %2, fnord
+        %ifdef cpuname
+            %if notcpuflag(%2)
+                %error use of ``%1'' %2 instruction in cpuname function: current_function
+            %elif cpuflags_%2 < cpuflags_sse && notcpuflag(sse2) && __sizeofreg > 8
+                %error use of ``%1'' sse2 instruction in cpuname function: current_function
+            %endif
+        %endif
+    %endif
+
+    %if __emulate_avx
+        %xdefine __src1 %7
+        %xdefine __src2 %8
+        %if %5 && %4 == 0
+            %ifnidn %6, %7
+                %ifidn %6, %8
+                    %xdefine __src1 %8
+                    %xdefine __src2 %7
+                %elifnnum sizeof%8
+                    ; 3-operand AVX instructions with a memory arg can only have it in src2,
+                    ; whereas SSE emulation prefers to have it in src1 (i.e. the mov).
+                    ; So, if the instruction is commutative with a memory arg, swap them.
+                    %xdefine __src1 %8
+                    %xdefine __src2 %7
+                %endif
+            %endif
+        %endif
+        %ifnidn %6, __src1
+            %if %0 >= 9
+                CHECK_AVX_INSTR_EMU {%1 %6, %7, %8, %9}, %6, __src2, %9
+            %else
+                CHECK_AVX_INSTR_EMU {%1 %6, %7, %8}, %6, __src2
+            %endif
+            %if __sizeofreg == 8
+                MOVQ %6, __src1
+            %elif %3
+                MOVAPS %6, __src1
+            %else
+                MOVDQA %6, __src1
+            %endif
+        %endif
+        %if %0 >= 9
+            %1 %6, __src2, %9
+        %else
+            %1 %6, __src2
+        %endif
+    %elif %0 >= 9
+        __instr %6, %7, %8, %9
+    %elif %0 == 8
+        __instr %6, %7, %8
+    %elif %0 == 7
+        __instr %6, %7
+    %else
+        __instr %6
+    %endif
+%endmacro
+
+;%1 == instruction
+;%2 == minimal instruction set
+;%3 == 1 if float, 0 if int
+;%4 == 1 if 4-operand emulation, 0 if 3-operand emulation, 255 otherwise (no emulation)
+;%5 == 1 if commutative (i.e. doesn't matter which src arg is which), 0 if not
+%macro AVX_INSTR 1-5 fnord, 0, 255, 0
+    %macro %1 1-10 fnord, fnord, fnord, fnord, %1, %2, %3, %4, %5
+        %ifidn %2, fnord
+            RUN_AVX_INSTR %6, %7, %8, %9, %10, %1
+        %elifidn %3, fnord
+            RUN_AVX_INSTR %6, %7, %8, %9, %10, %1, %2
+        %elifidn %4, fnord
+            RUN_AVX_INSTR %6, %7, %8, %9, %10, %1, %2, %3
+        %elifidn %5, fnord
+            RUN_AVX_INSTR %6, %7, %8, %9, %10, %1, %2, %3, %4
+        %else
+            RUN_AVX_INSTR %6, %7, %8, %9, %10, %1, %2, %3, %4, %5
+        %endif
+    %endmacro
+%endmacro
+
+; Instructions with both VEX/EVEX and legacy encodings
+; Non-destructive instructions are written without parameters
+AVX_INSTR addpd, sse2, 1, 0, 1
+AVX_INSTR addps, sse, 1, 0, 1
+AVX_INSTR addsd, sse2, 1, 0, 0
+AVX_INSTR addss, sse, 1, 0, 0
+AVX_INSTR addsubpd, sse3, 1, 0, 0
+AVX_INSTR addsubps, sse3, 1, 0, 0
+AVX_INSTR aesdec, aesni, 0, 0, 0
+AVX_INSTR aesdeclast, aesni, 0, 0, 0
+AVX_INSTR aesenc, aesni, 0, 0, 0
+AVX_INSTR aesenclast, aesni, 0, 0, 0
+AVX_INSTR aesimc, aesni
+AVX_INSTR aeskeygenassist, aesni
+AVX_INSTR andnpd, sse2, 1, 0, 0
+AVX_INSTR andnps, sse, 1, 0, 0
+AVX_INSTR andpd, sse2, 1, 0, 1
+AVX_INSTR andps, sse, 1, 0, 1
+AVX_INSTR blendpd, sse4, 1, 1, 0
+AVX_INSTR blendps, sse4, 1, 1, 0
+AVX_INSTR blendvpd, sse4 ; can't be emulated
+AVX_INSTR blendvps, sse4 ; can't be emulated
+AVX_INSTR cmpeqpd, sse2, 1, 0, 1
+AVX_INSTR cmpeqps, sse, 1, 0, 1
+AVX_INSTR cmpeqsd, sse2, 1, 0, 0
+AVX_INSTR cmpeqss, sse, 1, 0, 0
+AVX_INSTR cmplepd, sse2, 1, 0, 0
+AVX_INSTR cmpleps, sse, 1, 0, 0
+AVX_INSTR cmplesd, sse2, 1, 0, 0
+AVX_INSTR cmpless, sse, 1, 0, 0
+AVX_INSTR cmpltpd, sse2, 1, 0, 0
+AVX_INSTR cmpltps, sse, 1, 0, 0
+AVX_INSTR cmpltsd, sse2, 1, 0, 0
+AVX_INSTR cmpltss, sse, 1, 0, 0
+AVX_INSTR cmpneqpd, sse2, 1, 0, 1
+AVX_INSTR cmpneqps, sse, 1, 0, 1
+AVX_INSTR cmpneqsd, sse2, 1, 0, 0
+AVX_INSTR cmpneqss, sse, 1, 0, 0
+AVX_INSTR cmpnlepd, sse2, 1, 0, 0
+AVX_INSTR cmpnleps, sse, 1, 0, 0
+AVX_INSTR cmpnlesd, sse2, 1, 0, 0
+AVX_INSTR cmpnless, sse, 1, 0, 0
+AVX_INSTR cmpnltpd, sse2, 1, 0, 0
+AVX_INSTR cmpnltps, sse, 1, 0, 0
+AVX_INSTR cmpnltsd, sse2, 1, 0, 0
+AVX_INSTR cmpnltss, sse, 1, 0, 0
+AVX_INSTR cmpordpd, sse2 1, 0, 1
+AVX_INSTR cmpordps, sse 1, 0, 1
+AVX_INSTR cmpordsd, sse2 1, 0, 0
+AVX_INSTR cmpordss, sse 1, 0, 0
+AVX_INSTR cmppd, sse2, 1, 1, 0
+AVX_INSTR cmpps, sse, 1, 1, 0
+AVX_INSTR cmpsd, sse2, 1, 1, 0
+AVX_INSTR cmpss, sse, 1, 1, 0
+AVX_INSTR cmpunordpd, sse2, 1, 0, 1
+AVX_INSTR cmpunordps, sse, 1, 0, 1
+AVX_INSTR cmpunordsd, sse2, 1, 0, 0
+AVX_INSTR cmpunordss, sse, 1, 0, 0
+AVX_INSTR comisd, sse2
+AVX_INSTR comiss, sse
+AVX_INSTR cvtdq2pd, sse2
+AVX_INSTR cvtdq2ps, sse2
+AVX_INSTR cvtpd2dq, sse2
+AVX_INSTR cvtpd2ps, sse2
+AVX_INSTR cvtps2dq, sse2
+AVX_INSTR cvtps2pd, sse2
+AVX_INSTR cvtsd2si, sse2
+AVX_INSTR cvtsd2ss, sse2, 1, 0, 0
+AVX_INSTR cvtsi2sd, sse2, 1, 0, 0
+AVX_INSTR cvtsi2ss, sse, 1, 0, 0
+AVX_INSTR cvtss2sd, sse2, 1, 0, 0
+AVX_INSTR cvtss2si, sse
+AVX_INSTR cvttpd2dq, sse2
+AVX_INSTR cvttps2dq, sse2
+AVX_INSTR cvttsd2si, sse2
+AVX_INSTR cvttss2si, sse
+AVX_INSTR divpd, sse2, 1, 0, 0
+AVX_INSTR divps, sse, 1, 0, 0
+AVX_INSTR divsd, sse2, 1, 0, 0
+AVX_INSTR divss, sse, 1, 0, 0
+AVX_INSTR dppd, sse4, 1, 1, 0
+AVX_INSTR dpps, sse4, 1, 1, 0
+AVX_INSTR extractps, sse4
+AVX_INSTR haddpd, sse3, 1, 0, 0
+AVX_INSTR haddps, sse3, 1, 0, 0
+AVX_INSTR hsubpd, sse3, 1, 0, 0
+AVX_INSTR hsubps, sse3, 1, 0, 0
+AVX_INSTR insertps, sse4, 1, 1, 0
+AVX_INSTR lddqu, sse3
+AVX_INSTR ldmxcsr, sse
+AVX_INSTR maskmovdqu, sse2
+AVX_INSTR maxpd, sse2, 1, 0, 1
+AVX_INSTR maxps, sse, 1, 0, 1
+AVX_INSTR maxsd, sse2, 1, 0, 0
+AVX_INSTR maxss, sse, 1, 0, 0
+AVX_INSTR minpd, sse2, 1, 0, 1
+AVX_INSTR minps, sse, 1, 0, 1
+AVX_INSTR minsd, sse2, 1, 0, 0
+AVX_INSTR minss, sse, 1, 0, 0
+AVX_INSTR movapd, sse2
+AVX_INSTR movaps, sse
+AVX_INSTR movd, mmx
+AVX_INSTR movddup, sse3
+AVX_INSTR movdqa, sse2
+AVX_INSTR movdqu, sse2
+AVX_INSTR movhlps, sse, 1, 0, 0
+AVX_INSTR movhpd, sse2, 1, 0, 0
+AVX_INSTR movhps, sse, 1, 0, 0
+AVX_INSTR movlhps, sse, 1, 0, 0
+AVX_INSTR movlpd, sse2, 1, 0, 0
+AVX_INSTR movlps, sse, 1, 0, 0
+AVX_INSTR movmskpd, sse2
+AVX_INSTR movmskps, sse
+AVX_INSTR movntdq, sse2
+AVX_INSTR movntdqa, sse4
+AVX_INSTR movntpd, sse2
+AVX_INSTR movntps, sse
+AVX_INSTR movq, mmx
+AVX_INSTR movsd, sse2, 1, 0, 0
+AVX_INSTR movshdup, sse3
+AVX_INSTR movsldup, sse3
+AVX_INSTR movss, sse, 1, 0, 0
+AVX_INSTR movupd, sse2
+AVX_INSTR movups, sse
+AVX_INSTR mpsadbw, sse4, 0, 1, 0
+AVX_INSTR mulpd, sse2, 1, 0, 1
+AVX_INSTR mulps, sse, 1, 0, 1
+AVX_INSTR mulsd, sse2, 1, 0, 0
+AVX_INSTR mulss, sse, 1, 0, 0
+AVX_INSTR orpd, sse2, 1, 0, 1
+AVX_INSTR orps, sse, 1, 0, 1
+AVX_INSTR pabsb, ssse3
+AVX_INSTR pabsd, ssse3
+AVX_INSTR pabsw, ssse3
+AVX_INSTR packsswb, mmx, 0, 0, 0
+AVX_INSTR packssdw, mmx, 0, 0, 0
+AVX_INSTR packuswb, mmx, 0, 0, 0
+AVX_INSTR packusdw, sse4, 0, 0, 0
+AVX_INSTR paddb, mmx, 0, 0, 1
+AVX_INSTR paddw, mmx, 0, 0, 1
+AVX_INSTR paddd, mmx, 0, 0, 1
+AVX_INSTR paddq, sse2, 0, 0, 1
+AVX_INSTR paddsb, mmx, 0, 0, 1
+AVX_INSTR paddsw, mmx, 0, 0, 1
+AVX_INSTR paddusb, mmx, 0, 0, 1
+AVX_INSTR paddusw, mmx, 0, 0, 1
+AVX_INSTR palignr, ssse3, 0, 1, 0
+AVX_INSTR pand, mmx, 0, 0, 1
+AVX_INSTR pandn, mmx, 0, 0, 0
+AVX_INSTR pavgb, mmx2, 0, 0, 1
+AVX_INSTR pavgw, mmx2, 0, 0, 1
+AVX_INSTR pblendvb, sse4 ; can't be emulated
+AVX_INSTR pblendw, sse4, 0, 1, 0
+AVX_INSTR pclmulqdq, fnord, 0, 1, 0
+AVX_INSTR pclmulhqhqdq, fnord, 0, 0, 0
+AVX_INSTR pclmulhqlqdq, fnord, 0, 0, 0
+AVX_INSTR pclmullqhqdq, fnord, 0, 0, 0
+AVX_INSTR pclmullqlqdq, fnord, 0, 0, 0
+AVX_INSTR pcmpestri, sse42
+AVX_INSTR pcmpestrm, sse42
+AVX_INSTR pcmpistri, sse42
+AVX_INSTR pcmpistrm, sse42
+AVX_INSTR pcmpeqb, mmx, 0, 0, 1
+AVX_INSTR pcmpeqw, mmx, 0, 0, 1
+AVX_INSTR pcmpeqd, mmx, 0, 0, 1
+AVX_INSTR pcmpeqq, sse4, 0, 0, 1
+AVX_INSTR pcmpgtb, mmx, 0, 0, 0
+AVX_INSTR pcmpgtw, mmx, 0, 0, 0
+AVX_INSTR pcmpgtd, mmx, 0, 0, 0
+AVX_INSTR pcmpgtq, sse42, 0, 0, 0
+AVX_INSTR pextrb, sse4
+AVX_INSTR pextrd, sse4
+AVX_INSTR pextrq, sse4
+AVX_INSTR pextrw, mmx2
+AVX_INSTR phaddw, ssse3, 0, 0, 0
+AVX_INSTR phaddd, ssse3, 0, 0, 0
+AVX_INSTR phaddsw, ssse3, 0, 0, 0
+AVX_INSTR phminposuw, sse4
+AVX_INSTR phsubw, ssse3, 0, 0, 0
+AVX_INSTR phsubd, ssse3, 0, 0, 0
+AVX_INSTR phsubsw, ssse3, 0, 0, 0
+AVX_INSTR pinsrb, sse4, 0, 1, 0
+AVX_INSTR pinsrd, sse4, 0, 1, 0
+AVX_INSTR pinsrq, sse4, 0, 1, 0
+AVX_INSTR pinsrw, mmx2, 0, 1, 0
+AVX_INSTR pmaddwd, mmx, 0, 0, 1
+AVX_INSTR pmaddubsw, ssse3, 0, 0, 0
+AVX_INSTR pmaxsb, sse4, 0, 0, 1
+AVX_INSTR pmaxsw, mmx2, 0, 0, 1
+AVX_INSTR pmaxsd, sse4, 0, 0, 1
+AVX_INSTR pmaxub, mmx2, 0, 0, 1
+AVX_INSTR pmaxuw, sse4, 0, 0, 1
+AVX_INSTR pmaxud, sse4, 0, 0, 1
+AVX_INSTR pminsb, sse4, 0, 0, 1
+AVX_INSTR pminsw, mmx2, 0, 0, 1
+AVX_INSTR pminsd, sse4, 0, 0, 1
+AVX_INSTR pminub, mmx2, 0, 0, 1
+AVX_INSTR pminuw, sse4, 0, 0, 1
+AVX_INSTR pminud, sse4, 0, 0, 1
+AVX_INSTR pmovmskb, mmx2
+AVX_INSTR pmovsxbw, sse4
+AVX_INSTR pmovsxbd, sse4
+AVX_INSTR pmovsxbq, sse4
+AVX_INSTR pmovsxwd, sse4
+AVX_INSTR pmovsxwq, sse4
+AVX_INSTR pmovsxdq, sse4
+AVX_INSTR pmovzxbw, sse4
+AVX_INSTR pmovzxbd, sse4
+AVX_INSTR pmovzxbq, sse4
+AVX_INSTR pmovzxwd, sse4
+AVX_INSTR pmovzxwq, sse4
+AVX_INSTR pmovzxdq, sse4
+AVX_INSTR pmuldq, sse4, 0, 0, 1
+AVX_INSTR pmulhrsw, ssse3, 0, 0, 1
+AVX_INSTR pmulhuw, mmx2, 0, 0, 1
+AVX_INSTR pmulhw, mmx, 0, 0, 1
+AVX_INSTR pmullw, mmx, 0, 0, 1
+AVX_INSTR pmulld, sse4, 0, 0, 1
+AVX_INSTR pmuludq, sse2, 0, 0, 1
+AVX_INSTR por, mmx, 0, 0, 1
+AVX_INSTR psadbw, mmx2, 0, 0, 1
+AVX_INSTR pshufb, ssse3, 0, 0, 0
+AVX_INSTR pshufd, sse2
+AVX_INSTR pshufhw, sse2
+AVX_INSTR pshuflw, sse2
+AVX_INSTR psignb, ssse3, 0, 0, 0
+AVX_INSTR psignw, ssse3, 0, 0, 0
+AVX_INSTR psignd, ssse3, 0, 0, 0
+AVX_INSTR psllw, mmx, 0, 0, 0
+AVX_INSTR pslld, mmx, 0, 0, 0
+AVX_INSTR psllq, mmx, 0, 0, 0
+AVX_INSTR pslldq, sse2, 0, 0, 0
+AVX_INSTR psraw, mmx, 0, 0, 0
+AVX_INSTR psrad, mmx, 0, 0, 0
+AVX_INSTR psrlw, mmx, 0, 0, 0
+AVX_INSTR psrld, mmx, 0, 0, 0
+AVX_INSTR psrlq, mmx, 0, 0, 0
+AVX_INSTR psrldq, sse2, 0, 0, 0
+AVX_INSTR psubb, mmx, 0, 0, 0
+AVX_INSTR psubw, mmx, 0, 0, 0
+AVX_INSTR psubd, mmx, 0, 0, 0
+AVX_INSTR psubq, sse2, 0, 0, 0
+AVX_INSTR psubsb, mmx, 0, 0, 0
+AVX_INSTR psubsw, mmx, 0, 0, 0
+AVX_INSTR psubusb, mmx, 0, 0, 0
+AVX_INSTR psubusw, mmx, 0, 0, 0
+AVX_INSTR ptest, sse4
+AVX_INSTR punpckhbw, mmx, 0, 0, 0
+AVX_INSTR punpckhwd, mmx, 0, 0, 0
+AVX_INSTR punpckhdq, mmx, 0, 0, 0
+AVX_INSTR punpckhqdq, sse2, 0, 0, 0
+AVX_INSTR punpcklbw, mmx, 0, 0, 0
+AVX_INSTR punpcklwd, mmx, 0, 0, 0
+AVX_INSTR punpckldq, mmx, 0, 0, 0
+AVX_INSTR punpcklqdq, sse2, 0, 0, 0
+AVX_INSTR pxor, mmx, 0, 0, 1
+AVX_INSTR rcpps, sse
+AVX_INSTR rcpss, sse, 1, 0, 0
+AVX_INSTR roundpd, sse4
+AVX_INSTR roundps, sse4
+AVX_INSTR roundsd, sse4, 1, 1, 0
+AVX_INSTR roundss, sse4, 1, 1, 0
+AVX_INSTR rsqrtps, sse
+AVX_INSTR rsqrtss, sse, 1, 0, 0
+AVX_INSTR shufpd, sse2, 1, 1, 0
+AVX_INSTR shufps, sse, 1, 1, 0
+AVX_INSTR sqrtpd, sse2
+AVX_INSTR sqrtps, sse
+AVX_INSTR sqrtsd, sse2, 1, 0, 0
+AVX_INSTR sqrtss, sse, 1, 0, 0
+AVX_INSTR stmxcsr, sse
+AVX_INSTR subpd, sse2, 1, 0, 0
+AVX_INSTR subps, sse, 1, 0, 0
+AVX_INSTR subsd, sse2, 1, 0, 0
+AVX_INSTR subss, sse, 1, 0, 0
+AVX_INSTR ucomisd, sse2
+AVX_INSTR ucomiss, sse
+AVX_INSTR unpckhpd, sse2, 1, 0, 0
+AVX_INSTR unpckhps, sse, 1, 0, 0
+AVX_INSTR unpcklpd, sse2, 1, 0, 0
+AVX_INSTR unpcklps, sse, 1, 0, 0
+AVX_INSTR xorpd, sse2, 1, 0, 1
+AVX_INSTR xorps, sse, 1, 0, 1
+
+; 3DNow instructions, for sharing code between AVX, SSE and 3DN
+AVX_INSTR pfadd, 3dnow, 1, 0, 1
+AVX_INSTR pfsub, 3dnow, 1, 0, 0
+AVX_INSTR pfmul, 3dnow, 1, 0, 1
+
+; base-4 constants for shuffles
+%assign i 0
+%rep 256
+    %assign j ((i>>6)&3)*1000 + ((i>>4)&3)*100 + ((i>>2)&3)*10 + (i&3)
+    %if j < 10
+        CAT_XDEFINE q000, j, i
+    %elif j < 100
+        CAT_XDEFINE q00, j, i
+    %elif j < 1000
+        CAT_XDEFINE q0, j, i
+    %else
+        CAT_XDEFINE q, j, i
+    %endif
+    %assign i i+1
+%endrep
+%undef i
+%undef j
+
+%macro FMA_INSTR 3
+    %macro %1 4-7 %1, %2, %3
+        %if cpuflag(xop)
+            v%5 %1, %2, %3, %4
+        %elifnidn %1, %4
+            %6 %1, %2, %3
+            %7 %1, %4
+        %else
+            %error non-xop emulation of ``%5 %1, %2, %3, %4'' is not supported
+        %endif
+    %endmacro
+%endmacro
+
+FMA_INSTR  pmacsww,  pmullw, paddw
+FMA_INSTR  pmacsdd,  pmulld, paddd ; sse4 emulation
+FMA_INSTR pmacsdql,  pmuldq, paddq ; sse4 emulation
+FMA_INSTR pmadcswd, pmaddwd, paddd
+
+; tzcnt is equivalent to "rep bsf" and is backwards-compatible with bsf.
+; This lets us use tzcnt without bumping the yasm version requirement yet.
+%define tzcnt rep bsf
+
+; Macros for consolidating FMA3 and FMA4 using 4-operand (dst, src1, src2, src3) syntax.
+; FMA3 is only possible if dst is the same as one of the src registers.
+; Either src2 or src3 can be a memory operand.
+%macro FMA4_INSTR 2-*
+    %push fma4_instr
+    %xdefine %$prefix %1
+    %rep %0 - 1
+        %macro %$prefix%2 4-6 %$prefix, %2
+            %if notcpuflag(fma3) && notcpuflag(fma4)
+                %error use of ``%5%6'' fma instruction in cpuname function: current_function
+            %elif cpuflag(fma4)
+                v%5%6 %1, %2, %3, %4
+            %elifidn %1, %2
+                ; If %3 or %4 is a memory operand it needs to be encoded as the last operand.
+                %ifnum sizeof%3
+                    v%{5}213%6 %2, %3, %4
+                %else
+                    v%{5}132%6 %2, %4, %3
+                %endif
+            %elifidn %1, %3
+                v%{5}213%6 %3, %2, %4
+            %elifidn %1, %4
+                v%{5}231%6 %4, %2, %3
+            %else
+                %error fma3 emulation of ``%5%6 %1, %2, %3, %4'' is not supported
+            %endif
+        %endmacro
+        %rotate 1
+    %endrep
+    %pop
+%endmacro
+
+FMA4_INSTR fmadd,    pd, ps, sd, ss
+FMA4_INSTR fmaddsub, pd, ps
+FMA4_INSTR fmsub,    pd, ps, sd, ss
+FMA4_INSTR fmsubadd, pd, ps
+FMA4_INSTR fnmadd,   pd, ps, sd, ss
+FMA4_INSTR fnmsub,   pd, ps, sd, ss
+
+; Macros for converting VEX instructions to equivalent EVEX ones.
+%macro EVEX_INSTR 2-3 0 ; vex, evex, prefer_evex
+    %macro %1 2-7 fnord, fnord, %1, %2, %3
+        %ifidn %3, fnord
+            %define %%args %1, %2
+        %elifidn %4, fnord
+            %define %%args %1, %2, %3
+        %else
+            %define %%args %1, %2, %3, %4
+        %endif
+        %assign %%evex_required cpuflag(avx512) & %7
+        %ifnum regnumof%1
+            %if regnumof%1 >= 16 || sizeof%1 > 32
+                %assign %%evex_required 1
+            %endif
+        %endif
+        %ifnum regnumof%2
+            %if regnumof%2 >= 16 || sizeof%2 > 32
+                %assign %%evex_required 1
+            %endif
+        %endif
+        %if %%evex_required
+            %6 %%args
+        %else
+            %5 %%args ; Prefer VEX over EVEX due to shorter instruction length
+        %endif
+    %endmacro
+%endmacro
+
+EVEX_INSTR vbroadcastf128, vbroadcastf32x4
+EVEX_INSTR vbroadcasti128, vbroadcasti32x4
+EVEX_INSTR vextractf128,   vextractf32x4
+EVEX_INSTR vextracti128,   vextracti32x4
+EVEX_INSTR vinsertf128,    vinsertf32x4
+EVEX_INSTR vinserti128,    vinserti32x4
+EVEX_INSTR vmovdqa,        vmovdqa32
+EVEX_INSTR vmovdqu,        vmovdqu32
+EVEX_INSTR vpand,          vpandd
+EVEX_INSTR vpandn,         vpandnd
+EVEX_INSTR vpor,           vpord
+EVEX_INSTR vpxor,          vpxord
+EVEX_INSTR vrcpps,         vrcp14ps,   1 ; EVEX versions have higher precision
+EVEX_INSTR vrcpss,         vrcp14ss,   1
+EVEX_INSTR vrsqrtps,       vrsqrt14ps, 1
+EVEX_INSTR vrsqrtss,       vrsqrt14ss, 1
+
+; workaround: vpbroadcastq is broken in x86_32 due to a yasm bug (fixed in 1.3.0)
+%ifdef __YASM_VER__
+    %if __YASM_VERSION_ID__ < 0x01030000 && ARCH_X86_64 == 0
+        %macro vpbroadcastq 2
+            %if sizeof%1 == 16
+                movddup %1, %2
+            %else
+                vbroadcastsd %1, %2
+            %endif
+        %endmacro
+    %endif
+%endif
diff --git a/media/ffvpx/libavutil/x86/x86util.asm b/media/ffvpx/libavutil/x86/x86util.asm
new file mode 100644
index 0000000000..d7cd996842
--- /dev/null
+++ b/media/ffvpx/libavutil/x86/x86util.asm
@@ -0,0 +1,1028 @@
+;*****************************************************************************
+;* x86util.asm
+;*****************************************************************************
+;* Copyright (C) 2008-2010 x264 project
+;*
+;* Authors: Loren Merritt <lorenm@u.washington.edu>
+;*          Holger Lubitz <holger@lubitz.org>
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%define private_prefix ff
+%define public_prefix  avpriv
+%define cpuflags_mmxext cpuflags_mmx2
+
+%include "libavutil/x86/x86inc.asm"
+
+; expands to [base],...,[base+7*stride]
+%define PASS8ROWS(base, base3, stride, stride3) \
+    [base],           [base  + stride],   [base  + 2*stride], [base3], \
+    [base3 + stride], [base3 + 2*stride], [base3 + stride3],  [base3 + stride*4]
+
+; Interleave low src0 with low src1 and store in src0,
+; interleave high src0 with high src1 and store in src1.
+; %1 - types
+; %2 - index of the register with src0
+; %3 - index of the register with src1
+; %4 - index of the register for intermediate results
+; example for %1 - wd: input: src0: x0 x1 x2 x3 z0 z1 z2 z3
+;                             src1: y0 y1 y2 y3 q0 q1 q2 q3
+;                     output: src0: x0 y0 x1 y1 x2 y2 x3 y3
+;                             src1: z0 q0 z1 q1 z2 q2 z3 q3
+%macro SBUTTERFLY 4
+%ifidn %1, dqqq
+    vperm2i128  m%4, m%2, m%3, q0301
+    vinserti128 m%2, m%2, xm%3, 1
+%elif avx_enabled == 0
+    mova      m%4, m%2
+    punpckl%1 m%2, m%3
+    punpckh%1 m%4, m%3
+%else
+    punpckh%1 m%4, m%2, m%3
+    punpckl%1 m%2, m%3
+%endif
+    SWAP %3, %4
+%endmacro
+
+%macro SBUTTERFLY2 4
+    punpckl%1 m%4, m%2, m%3
+    punpckh%1 m%2, m%2, m%3
+    SWAP %2, %4, %3
+%endmacro
+
+%macro SBUTTERFLYPS 3
+    unpcklps m%3, m%1, m%2
+    unpckhps m%1, m%1, m%2
+    SWAP %1, %3, %2
+%endmacro
+
+%macro SBUTTERFLYPD 3
+    movlhps m%3, m%1, m%2
+    movhlps m%2, m%2, m%1
+    SWAP %1, %3
+%endmacro
+
+%macro TRANSPOSE4x4B 5
+    SBUTTERFLY bw, %1, %2, %5
+    SBUTTERFLY bw, %3, %4, %5
+    SBUTTERFLY wd, %1, %3, %5
+    SBUTTERFLY wd, %2, %4, %5
+    SWAP %2, %3
+%endmacro
+
+%macro TRANSPOSE4x4W 5
+    SBUTTERFLY wd, %1, %2, %5
+    SBUTTERFLY wd, %3, %4, %5
+    SBUTTERFLY dq, %1, %3, %5
+    SBUTTERFLY dq, %2, %4, %5
+    SWAP %2, %3
+%endmacro
+
+%macro TRANSPOSE2x4x4B 5
+    SBUTTERFLY bw,  %1, %2, %5
+    SBUTTERFLY bw,  %3, %4, %5
+    SBUTTERFLY wd,  %1, %3, %5
+    SBUTTERFLY wd,  %2, %4, %5
+    SBUTTERFLY dq,  %1, %2, %5
+    SBUTTERFLY dq,  %3, %4, %5
+%endmacro
+
+%macro TRANSPOSE2x4x4W 5
+    SBUTTERFLY wd,  %1, %2, %5
+    SBUTTERFLY wd,  %3, %4, %5
+    SBUTTERFLY dq,  %1, %3, %5
+    SBUTTERFLY dq,  %2, %4, %5
+    SBUTTERFLY qdq, %1, %2, %5
+    SBUTTERFLY qdq, %3, %4, %5
+%endmacro
+
+%macro TRANSPOSE4x4D 5
+    SBUTTERFLY dq,  %1, %2, %5
+    SBUTTERFLY dq,  %3, %4, %5
+    SBUTTERFLY qdq, %1, %3, %5
+    SBUTTERFLY qdq, %2, %4, %5
+    SWAP %2, %3
+%endmacro
+
+; identical behavior to TRANSPOSE4x4D, but using SSE1 float ops
+%macro TRANSPOSE4x4PS 5
+    SBUTTERFLYPS %1, %2, %5
+    SBUTTERFLYPS %3, %4, %5
+    SBUTTERFLYPD %1, %3, %5
+    SBUTTERFLYPD %2, %4, %5
+    SWAP %2, %3
+%endmacro
+
+%macro TRANSPOSE8x4D 9-11
+%if ARCH_X86_64
+    SBUTTERFLY dq,  %1, %2, %9
+    SBUTTERFLY dq,  %3, %4, %9
+    SBUTTERFLY dq,  %5, %6, %9
+    SBUTTERFLY dq,  %7, %8, %9
+    SBUTTERFLY qdq, %1, %3, %9
+    SBUTTERFLY qdq, %2, %4, %9
+    SBUTTERFLY qdq, %5, %7, %9
+    SBUTTERFLY qdq, %6, %8, %9
+    SWAP %2, %5
+    SWAP %4, %7
+%else
+; in:  m0..m7
+; out: m0..m7, unless %11 in which case m2 is in %9
+; spills into %9 and %10
+    movdqa %9, m%7
+    SBUTTERFLY dq,  %1, %2, %7
+    movdqa %10, m%2
+    movdqa m%7, %9
+    SBUTTERFLY dq,  %3, %4, %2
+    SBUTTERFLY dq,  %5, %6, %2
+    SBUTTERFLY dq,  %7, %8, %2
+    SBUTTERFLY qdq, %1, %3, %2
+    movdqa %9, m%3
+    movdqa m%2, %10
+    SBUTTERFLY qdq, %2, %4, %3
+    SBUTTERFLY qdq, %5, %7, %3
+    SBUTTERFLY qdq, %6, %8, %3
+    SWAP %2, %5
+    SWAP %4, %7
+%if %0<11
+    movdqa m%3, %9
+%endif
+%endif
+%endmacro
+
+%macro TRANSPOSE8x8W 9-11
+%if ARCH_X86_64
+    SBUTTERFLY wd,  %1, %2, %9
+    SBUTTERFLY wd,  %3, %4, %9
+    SBUTTERFLY wd,  %5, %6, %9
+    SBUTTERFLY wd,  %7, %8, %9
+    SBUTTERFLY dq,  %1, %3, %9
+    SBUTTERFLY dq,  %2, %4, %9
+    SBUTTERFLY dq,  %5, %7, %9
+    SBUTTERFLY dq,  %6, %8, %9
+    SBUTTERFLY qdq, %1, %5, %9
+    SBUTTERFLY qdq, %2, %6, %9
+    SBUTTERFLY qdq, %3, %7, %9
+    SBUTTERFLY qdq, %4, %8, %9
+    SWAP %2, %5
+    SWAP %4, %7
+%else
+; in:  m0..m7, unless %11 in which case m6 is in %9
+; out: m0..m7, unless %11 in which case m4 is in %10
+; spills into %9 and %10
+%if %0<11
+    movdqa %9, m%7
+%endif
+    SBUTTERFLY wd,  %1, %2, %7
+    movdqa %10, m%2
+    movdqa m%7, %9
+    SBUTTERFLY wd,  %3, %4, %2
+    SBUTTERFLY wd,  %5, %6, %2
+    SBUTTERFLY wd,  %7, %8, %2
+    SBUTTERFLY dq,  %1, %3, %2
+    movdqa %9, m%3
+    movdqa m%2, %10
+    SBUTTERFLY dq,  %2, %4, %3
+    SBUTTERFLY dq,  %5, %7, %3
+    SBUTTERFLY dq,  %6, %8, %3
+    SBUTTERFLY qdq, %1, %5, %3
+    SBUTTERFLY qdq, %2, %6, %3
+    movdqa %10, m%2
+    movdqa m%3, %9
+    SBUTTERFLY qdq, %3, %7, %2
+    SBUTTERFLY qdq, %4, %8, %2
+    SWAP %2, %5
+    SWAP %4, %7
+%if %0<11
+    movdqa m%5, %10
+%endif
+%endif
+%endmacro
+
+%macro TRANSPOSE16x16W 18-19
+; in:  m0..m15, unless %19 in which case m6 is in %17
+; out: m0..m15, unless %19 in which case m4 is in %18
+; spills into %17 and %18
+%if %0 < 19
+    mova       %17, m%7
+%endif
+
+    SBUTTERFLY dqqq, %1,  %9, %7
+    SBUTTERFLY dqqq, %2, %10, %7
+    SBUTTERFLY dqqq, %3, %11, %7
+    SBUTTERFLY dqqq, %4, %12, %7
+    SBUTTERFLY dqqq, %5, %13, %7
+    SBUTTERFLY dqqq, %6, %14, %7
+    mova       %18, m%14
+    mova       m%7, %17
+    SBUTTERFLY dqqq, %7, %15, %14
+    SBUTTERFLY dqqq, %8, %16, %14
+
+    SBUTTERFLY  wd,  %1,  %2, %14
+    SBUTTERFLY  wd,  %3,  %4, %14
+    SBUTTERFLY  wd,  %5,  %6, %14
+    SBUTTERFLY  wd,  %7,  %8, %14
+    SBUTTERFLY  wd,  %9, %10, %14
+    SBUTTERFLY  wd, %11, %12, %14
+    mova       %17, m%12
+    mova      m%14, %18
+    SBUTTERFLY  wd, %13, %14, %12
+    SBUTTERFLY  wd, %15, %16, %12
+
+    SBUTTERFLY  dq,  %1,  %3, %12
+    SBUTTERFLY  dq,  %2,  %4, %12
+    SBUTTERFLY  dq,  %5,  %7, %12
+    SBUTTERFLY  dq,  %6,  %8, %12
+    SBUTTERFLY  dq,  %9, %11, %12
+    mova       %18, m%11
+    mova      m%12, %17
+    SBUTTERFLY  dq, %10, %12, %11
+    SBUTTERFLY  dq, %13, %15, %11
+    SBUTTERFLY  dq, %14, %16, %11
+
+    SBUTTERFLY qdq,  %1,  %5, %11
+    SBUTTERFLY qdq,  %2,  %6, %11
+    SBUTTERFLY qdq,  %3,  %7, %11
+    SBUTTERFLY qdq,  %4,  %8, %11
+
+    SWAP        %2, %5
+    SWAP        %4, %7
+
+    SBUTTERFLY qdq,  %9, %13, %11
+    SBUTTERFLY qdq, %10, %14, %11
+    mova      m%11, %18
+    mova       %18, m%5
+    SBUTTERFLY qdq, %11, %15, %5
+    SBUTTERFLY qdq, %12, %16, %5
+
+%if %0 < 19
+    mova       m%5, %18
+%endif
+
+    SWAP       %10, %13
+    SWAP       %12, %15
+%endmacro
+
+%macro TRANSPOSE_8X8B 8
+    %if mmsize == 8
+        %error "This macro does not support mmsize == 8"
+    %endif
+    punpcklbw m%1, m%2
+    punpcklbw m%3, m%4
+    punpcklbw m%5, m%6
+    punpcklbw m%7, m%8
+    TRANSPOSE4x4W %1, %3, %5, %7, %2
+    MOVHL m%2, m%1
+    MOVHL m%4, m%3
+    MOVHL m%6, m%5
+    MOVHL m%8, m%7
+%endmacro
+
+; PABSW macro assumes %1 != %2, while ABS1/2 macros work in-place
+%macro PABSW 2
+%if cpuflag(ssse3)
+    pabsw      %1, %2
+%elif cpuflag(mmxext)
+    pxor    %1, %1
+    psubw   %1, %2
+    pmaxsw  %1, %2
+%else
+    pxor       %1, %1
+    pcmpgtw    %1, %2
+    pxor       %2, %1
+    psubw      %2, %1
+    SWAP       %1, %2
+%endif
+%endmacro
+
+%macro PSIGNW 2
+%if cpuflag(ssse3)
+    psignw     %1, %2
+%else
+    pxor       %1, %2
+    psubw      %1, %2
+%endif
+%endmacro
+
+%macro ABS1 2
+%if cpuflag(ssse3)
+    pabsw   %1, %1
+%elif cpuflag(mmxext) ; a, tmp
+    pxor    %2, %2
+    psubw   %2, %1
+    pmaxsw  %1, %2
+%else ; a, tmp
+    pxor       %2, %2
+    pcmpgtw    %2, %1
+    pxor       %1, %2
+    psubw      %1, %2
+%endif
+%endmacro
+
+%macro ABS2 4
+%if cpuflag(ssse3)
+    pabsw   %1, %1
+    pabsw   %2, %2
+%elif cpuflag(mmxext) ; a, b, tmp0, tmp1
+    pxor    %3, %3
+    pxor    %4, %4
+    psubw   %3, %1
+    psubw   %4, %2
+    pmaxsw  %1, %3
+    pmaxsw  %2, %4
+%else ; a, b, tmp0, tmp1
+    pxor       %3, %3
+    pxor       %4, %4
+    pcmpgtw    %3, %1
+    pcmpgtw    %4, %2
+    pxor       %1, %3
+    pxor       %2, %4
+    psubw      %1, %3
+    psubw      %2, %4
+%endif
+%endmacro
+
+%macro ABSB 2 ; source mmreg, temp mmreg (unused for SSSE3)
+%if cpuflag(ssse3)
+    pabsb   %1, %1
+%else
+    pxor    %2, %2
+    psubb   %2, %1
+    pminub  %1, %2
+%endif
+%endmacro
+
+%macro ABSB2 4 ; src1, src2, tmp1, tmp2 (tmp1/2 unused for SSSE3)
+%if cpuflag(ssse3)
+    pabsb   %1, %1
+    pabsb   %2, %2
+%else
+    pxor    %3, %3
+    pxor    %4, %4
+    psubb   %3, %1
+    psubb   %4, %2
+    pminub  %1, %3
+    pminub  %2, %4
+%endif
+%endmacro
+
+%macro ABSD2 4
+    pxor    %3, %3
+    pxor    %4, %4
+    pcmpgtd %3, %1
+    pcmpgtd %4, %2
+    pxor    %1, %3
+    pxor    %2, %4
+    psubd   %1, %3
+    psubd   %2, %4
+%endmacro
+
+%macro ABS4 6
+    ABS2 %1, %2, %5, %6
+    ABS2 %3, %4, %5, %6
+%endmacro
+
+%macro SPLATB_LOAD 3
+%if cpuflag(ssse3)
+    movd      %1, [%2-3]
+    pshufb    %1, %3
+%else
+    movd      %1, [%2-3] ;to avoid crossing a cacheline
+    punpcklbw %1, %1
+    SPLATW    %1, %1, 3
+%endif
+%endmacro
+
+%macro SPLATB_REG 3
+%if cpuflag(ssse3)
+    movd      %1, %2d
+    pshufb    %1, %3
+%else
+    movd      %1, %2d
+    punpcklbw %1, %1
+    SPLATW    %1, %1, 0
+%endif
+%endmacro
+
+%macro HADDD 2 ; sum junk
+%if sizeof%1 == 32
+%define %2 xmm%2
+    vextracti128 %2, %1, 1
+%define %1 xmm%1
+    paddd   %1, %2
+%endif
+%if mmsize >= 16
+%if cpuflag(xop) && sizeof%1 == 16
+    vphadddq %1, %1
+%endif
+    movhlps %2, %1
+    paddd   %1, %2
+%endif
+%if notcpuflag(xop) || sizeof%1 != 16
+%if cpuflag(mmxext)
+    PSHUFLW %2, %1, q0032
+%else ; mmx
+    mova    %2, %1
+    psrlq   %2, 32
+%endif
+    paddd   %1, %2
+%endif
+%undef %1
+%undef %2
+%endmacro
+
+%macro HADDW 2 ; reg, tmp
+%if cpuflag(xop) && sizeof%1 == 16
+    vphaddwq  %1, %1
+    movhlps   %2, %1
+    paddd     %1, %2
+%else
+    pmaddwd %1, [pw_1]
+    HADDD   %1, %2
+%endif
+%endmacro
+
+%macro HADDPS 3 ; dst, src, tmp
+%if cpuflag(sse3)
+    haddps  %1, %1, %2
+%else
+    movaps  %3, %1
+    shufps  %1, %2, q2020
+    shufps  %3, %2, q3131
+    addps   %1, %3
+%endif
+%endmacro
+
+%macro PALIGNR 4-5
+%if cpuflag(ssse3)
+%if %0==5
+    palignr %1, %2, %3, %4
+%else
+    palignr %1, %2, %3
+%endif
+%else ; [dst,] src1, src2, imm, tmp
+    %define %%dst %1
+%if %0==5
+%ifnidn %1, %2
+    mova    %%dst, %2
+%endif
+    %rotate 1
+%endif
+%ifnidn %4, %2
+    mova    %4, %2
+%endif
+%if mmsize==8
+    psllq   %%dst, (8-%3)*8
+    psrlq   %4, %3*8
+%else
+    pslldq  %%dst, 16-%3
+    psrldq  %4, %3
+%endif
+    por     %%dst, %4
+%endif
+%endmacro
+
+%macro PAVGB 2-4
+%if cpuflag(mmxext)
+    pavgb   %1, %2
+%elif cpuflag(3dnow)
+    pavgusb %1, %2
+%elif cpuflag(mmx)
+    movu   %3, %2
+    por    %3, %1
+    pxor   %1, %2
+    pand   %1, %4
+    psrlq  %1, 1
+    psubb  %3, %1
+    SWAP   %1, %3
+%endif
+%endmacro
+
+%macro PSHUFLW 1+
+    %if mmsize == 8
+        pshufw %1
+    %else
+        pshuflw %1
+    %endif
+%endmacro
+
+%macro PSWAPD 2
+%if cpuflag(mmxext)
+    pshufw    %1, %2, q1032
+%elif cpuflag(3dnowext)
+    pswapd    %1, %2
+%elif cpuflag(3dnow)
+    movq      %1, %2
+    psrlq     %1, 32
+    punpckldq %1, %2
+%endif
+%endmacro
+
+%macro DEINTB 5 ; mask, reg1, mask, reg2, optional src to fill masks from
+%ifnum %5
+    pand   m%3, m%5, m%4 ; src .. y6 .. y4
+    pand   m%1, m%5, m%2 ; dst .. y6 .. y4
+%else
+    mova   m%1, %5
+    pand   m%3, m%1, m%4 ; src .. y6 .. y4
+    pand   m%1, m%1, m%2 ; dst .. y6 .. y4
+%endif
+    psrlw  m%2, 8        ; dst .. y7 .. y5
+    psrlw  m%4, 8        ; src .. y7 .. y5
+%endmacro
+
+%macro SUMSUB_BA 3-4
+%if %0==3
+    padd%1  m%2, m%3
+    padd%1  m%3, m%3
+    psub%1  m%3, m%2
+%else
+%if avx_enabled == 0
+    mova    m%4, m%2
+    padd%1  m%2, m%3
+    psub%1  m%3, m%4
+%else
+    padd%1  m%4, m%2, m%3
+    psub%1  m%3, m%2
+    SWAP    %2, %4
+%endif
+%endif
+%endmacro
+
+%macro SUMSUB_BADC 5-6
+%if %0==6
+    SUMSUB_BA %1, %2, %3, %6
+    SUMSUB_BA %1, %4, %5, %6
+%else
+    padd%1  m%2, m%3
+    padd%1  m%4, m%5
+    padd%1  m%3, m%3
+    padd%1  m%5, m%5
+    psub%1  m%3, m%2
+    psub%1  m%5, m%4
+%endif
+%endmacro
+
+%macro SUMSUB2_AB 4
+%ifnum %3
+    psub%1  m%4, m%2, m%3
+    psub%1  m%4, m%3
+    padd%1  m%2, m%2
+    padd%1  m%2, m%3
+%else
+    mova    m%4, m%2
+    padd%1  m%2, m%2
+    padd%1  m%2, %3
+    psub%1  m%4, %3
+    psub%1  m%4, %3
+%endif
+%endmacro
+
+%macro SUMSUB2_BA 4
+%if avx_enabled == 0
+    mova    m%4, m%2
+    padd%1  m%2, m%3
+    padd%1  m%2, m%3
+    psub%1  m%3, m%4
+    psub%1  m%3, m%4
+%else
+    padd%1  m%4, m%2, m%3
+    padd%1  m%4, m%3
+    psub%1  m%3, m%2
+    psub%1  m%3, m%2
+    SWAP     %2,  %4
+%endif
+%endmacro
+
+%macro SUMSUBD2_AB 5
+%ifnum %4
+    psra%1  m%5, m%2, 1  ; %3: %3>>1
+    psra%1  m%4, m%3, 1  ; %2: %2>>1
+    padd%1  m%4, m%2     ; %3: %3>>1+%2
+    psub%1  m%5, m%3     ; %2: %2>>1-%3
+    SWAP     %2, %5
+    SWAP     %3, %4
+%else
+    mova    %5, m%2
+    mova    %4, m%3
+    psra%1  m%3, 1  ; %3: %3>>1
+    psra%1  m%2, 1  ; %2: %2>>1
+    padd%1  m%3, %5 ; %3: %3>>1+%2
+    psub%1  m%2, %4 ; %2: %2>>1-%3
+%endif
+%endmacro
+
+%macro DCT4_1D 5
+%ifnum %5
+    SUMSUB_BADC w, %4, %1, %3, %2, %5
+    SUMSUB_BA   w, %3, %4, %5
+    SUMSUB2_AB  w, %1, %2, %5
+    SWAP %1, %3, %4, %5, %2
+%else
+    SUMSUB_BADC w, %4, %1, %3, %2
+    SUMSUB_BA   w, %3, %4
+    mova     [%5], m%2
+    SUMSUB2_AB  w, %1, [%5], %2
+    SWAP %1, %3, %4, %2
+%endif
+%endmacro
+
+%macro IDCT4_1D 6-7
+%ifnum %6
+    SUMSUBD2_AB %1, %3, %5, %7, %6
+    ; %3: %3>>1-%5 %5: %3+%5>>1
+    SUMSUB_BA   %1, %4, %2, %7
+    ; %4: %2+%4 %2: %2-%4
+    SUMSUB_BADC %1, %5, %4, %3, %2, %7
+    ; %5: %2+%4 + (%3+%5>>1)
+    ; %4: %2+%4 - (%3+%5>>1)
+    ; %3: %2-%4 + (%3>>1-%5)
+    ; %2: %2-%4 - (%3>>1-%5)
+%else
+%ifidn %1, w
+    SUMSUBD2_AB %1, %3, %5, [%6], [%6+16]
+%else
+    SUMSUBD2_AB %1, %3, %5, [%6], [%6+32]
+%endif
+    SUMSUB_BA   %1, %4, %2
+    SUMSUB_BADC %1, %5, %4, %3, %2
+%endif
+    SWAP %2, %5, %4
+    ; %2: %2+%4 + (%3+%5>>1) row0
+    ; %3: %2-%4 + (%3>>1-%5) row1
+    ; %4: %2-%4 - (%3>>1-%5) row2
+    ; %5: %2+%4 - (%3+%5>>1) row3
+%endmacro
+
+
+%macro LOAD_DIFF 5
+%ifidn %3, none
+    movh       %1, %4
+    movh       %2, %5
+    punpcklbw  %1, %2
+    punpcklbw  %2, %2
+    psubw      %1, %2
+%else
+    movh       %1, %4
+    punpcklbw  %1, %3
+    movh       %2, %5
+    punpcklbw  %2, %3
+    psubw      %1, %2
+%endif
+%endmacro
+
+%macro STORE_DCT 6
+    movq   [%5+%6+ 0], m%1
+    movq   [%5+%6+ 8], m%2
+    movq   [%5+%6+16], m%3
+    movq   [%5+%6+24], m%4
+    movhps [%5+%6+32], m%1
+    movhps [%5+%6+40], m%2
+    movhps [%5+%6+48], m%3
+    movhps [%5+%6+56], m%4
+%endmacro
+
+%macro LOAD_DIFF_8x4P 7-10 r0,r2,0 ; 4x dest, 2x temp, 2x pointer, increment?
+    LOAD_DIFF m%1, m%5, m%7, [%8],      [%9]
+    LOAD_DIFF m%2, m%6, m%7, [%8+r1],   [%9+r3]
+    LOAD_DIFF m%3, m%5, m%7, [%8+2*r1], [%9+2*r3]
+    LOAD_DIFF m%4, m%6, m%7, [%8+r4],   [%9+r5]
+%if %10
+    lea %8, [%8+4*r1]
+    lea %9, [%9+4*r3]
+%endif
+%endmacro
+
+%macro DIFFx2 6-7
+    movh       %3, %5
+    punpcklbw  %3, %4
+    psraw      %1, 6
+    paddsw     %1, %3
+    movh       %3, %6
+    punpcklbw  %3, %4
+    psraw      %2, 6
+    paddsw     %2, %3
+    packuswb   %2, %1
+%endmacro
+
+%macro STORE_DIFF 4
+    movh       %2, %4
+    punpcklbw  %2, %3
+    psraw      %1, 6
+    paddsw     %1, %2
+    packuswb   %1, %1
+    movh       %4, %1
+%endmacro
+
+%macro STORE_DIFFx2 8 ; add1, add2, reg1, reg2, zero, shift, source, stride
+    movh       %3, [%7]
+    movh       %4, [%7+%8]
+    psraw      %1, %6
+    psraw      %2, %6
+    punpcklbw  %3, %5
+    punpcklbw  %4, %5
+    paddw      %3, %1
+    paddw      %4, %2
+    packuswb   %3, %5
+    packuswb   %4, %5
+    movh     [%7], %3
+    movh  [%7+%8], %4
+%endmacro
+
+%macro PMINUB 3 ; dst, src, ignored
+%if cpuflag(mmxext)
+    pminub   %1, %2
+%else ; dst, src, tmp
+    mova     %3, %1
+    psubusb  %3, %2
+    psubb    %1, %3
+%endif
+%endmacro
+
+%macro SPLATW 2-3 0
+%if cpuflag(avx2) && %3 == 0
+    vpbroadcastw %1, %2
+%elif mmsize == 16
+    pshuflw    %1, %2, (%3)*0x55
+    punpcklqdq %1, %1
+%elif cpuflag(mmxext)
+    pshufw     %1, %2, (%3)*0x55
+%else
+    %ifnidn %1, %2
+        mova       %1, %2
+    %endif
+    %if %3 & 2
+        punpckhwd  %1, %1
+    %else
+        punpcklwd  %1, %1
+    %endif
+    %if %3 & 1
+        punpckhwd  %1, %1
+    %else
+        punpcklwd  %1, %1
+    %endif
+%endif
+%endmacro
+
+%macro SPLATD 1
+%if mmsize == 8
+    punpckldq  %1, %1
+%elif cpuflag(sse2)
+    pshufd  %1, %1, 0
+%elif cpuflag(sse)
+    shufps  %1, %1, 0
+%endif
+%endmacro
+
+%macro CLIPUB 3 ;(dst, min, max)
+    pmaxub %1, %2
+    pminub %1, %3
+%endmacro
+
+%macro CLIPW 3 ;(dst, min, max)
+    pmaxsw %1, %2
+    pminsw %1, %3
+%endmacro
+
+%macro PMINSD 3 ; dst, src, tmp/unused
+%if cpuflag(sse4)
+    pminsd    %1, %2
+%elif cpuflag(sse2)
+    cvtdq2ps  %1, %1
+    minps     %1, %2
+    cvtps2dq  %1, %1
+%else
+    mova      %3, %2
+    pcmpgtd   %3, %1
+    pxor      %1, %2
+    pand      %1, %3
+    pxor      %1, %2
+%endif
+%endmacro
+
+%macro PMAXSD 3 ; dst, src, tmp/unused
+%if cpuflag(sse4)
+    pmaxsd    %1, %2
+%else
+    mova      %3, %1
+    pcmpgtd   %3, %2
+    pand      %1, %3
+    pandn     %3, %2
+    por       %1, %3
+%endif
+%endmacro
+
+%macro CLIPD 3-4
+%if cpuflag(sse4);  src/dst, min, max, unused
+    pminsd  %1, %3
+    pmaxsd  %1, %2
+%elif cpuflag(sse2) ; src/dst, min (float), max (float), unused
+    cvtdq2ps  %1, %1
+    minps     %1, %3
+    maxps     %1, %2
+    cvtps2dq  %1, %1
+%else               ; src/dst, min, max, tmp
+    PMINSD    %1, %3, %4
+    PMAXSD    %1, %2, %4
+%endif
+%endmacro
+
+%macro VBROADCASTSS 2 ; dst xmm/ymm, src m32/xmm
+%if cpuflag(avx2)
+    vbroadcastss  %1, %2
+%elif cpuflag(avx)
+    %ifnum sizeof%2         ; avx1 register
+        shufps  xmm%1, xmm%2, xmm%2, q0000
+        %if sizeof%1 >= 32  ; mmsize>=32
+            vinsertf128  %1, %1, xmm%1, 1
+        %endif
+    %else                   ; avx1 memory
+        vbroadcastss  %1, %2
+    %endif
+%else
+    %ifnum sizeof%2         ; sse register
+        shufps  %1, %2, %2, q0000
+    %else                   ; sse memory
+        movss   %1, %2
+        shufps  %1, %1, 0
+    %endif
+%endif
+%endmacro
+
+%macro VBROADCASTSD 2 ; dst xmm/ymm, src m64
+%if cpuflag(avx) && mmsize == 32
+    vbroadcastsd %1, %2
+%elif cpuflag(sse3)
+    movddup      %1, %2
+%else ; sse2
+    movsd        %1, %2
+    movlhps      %1, %1
+%endif
+%endmacro
+
+%macro VPBROADCASTD 2 ; dst xmm/ymm, src m32/xmm
+%if cpuflag(avx2)
+    vpbroadcastd  %1, %2
+%elif cpuflag(avx) && sizeof%1 >= 32
+    %error vpbroadcastd not possible with ymm on avx1. try vbroadcastss
+%else
+    %ifnum sizeof%2         ; sse2 register
+        pshufd  %1, %2, q0000
+    %else                   ; sse memory
+        movd    %1, %2
+        pshufd  %1, %1, 0
+    %endif
+%endif
+%endmacro
+
+%macro VBROADCASTI128 2 ; dst xmm/ymm, src : 128bits val
+%if mmsize > 16
+    vbroadcasti128 %1, %2
+%else
+    mova           %1, %2
+%endif
+%endmacro
+
+%macro SHUFFLE_MASK_W 8
+    %rep 8
+        %if %1>=0x80
+            db %1, %1
+        %else
+            db %1*2
+            db %1*2+1
+        %endif
+        %rotate 1
+    %endrep
+%endmacro
+
+%macro PMOVSXWD 2; dst, src
+%if cpuflag(sse4)
+    pmovsxwd     %1, %2
+%else
+    %ifnidn %1, %2
+    mova         %1, %2
+    %endif
+    punpcklwd    %1, %1
+    psrad        %1, 16
+%endif
+%endmacro
+
+; Wrapper for non-FMA version of fmaddps
+%macro FMULADD_PS 5
+    %if cpuflag(fma3) || cpuflag(fma4)
+        fmaddps %1, %2, %3, %4
+    %elifidn %1, %4
+        mulps   %5, %2, %3
+        addps   %1, %4, %5
+    %else
+        mulps   %1, %2, %3
+        addps   %1, %4
+    %endif
+%endmacro
+
+%macro LSHIFT 2
+%if mmsize > 8
+    pslldq  %1, %2
+%else
+    psllq   %1, 8*(%2)
+%endif
+%endmacro
+
+%macro RSHIFT 2
+%if mmsize > 8
+    psrldq  %1, %2
+%else
+    psrlq   %1, 8*(%2)
+%endif
+%endmacro
+
+%macro MOVHL 2 ; dst, src
+%ifidn %1, %2
+    punpckhqdq %1, %2
+%elif cpuflag(avx)
+    punpckhqdq %1, %2, %2
+%elif cpuflag(sse4)
+    pshufd     %1, %2, q3232 ; pshufd is slow on some older CPUs, so only use it on more modern ones
+%else
+    movhlps    %1, %2        ; may cause an int/float domain transition and has a dependency on dst
+%endif
+%endmacro
+
+; Horizontal Sum of Packed Single precision floats
+; The resulting sum is in all elements.
+%macro HSUMPS 2 ; dst/src, tmp
+%if cpuflag(avx)
+    %if sizeof%1>=32  ; avx
+        vperm2f128  %2, %1, %1, (0)*16+(1)
+        addps       %1, %2
+    %endif
+    shufps      %2, %1, %1, q1032
+    addps       %1, %2
+    shufps      %2, %1, %1, q0321
+    addps       %1, %2
+%else  ; this form is a bit faster than the short avx-like emulation.
+    movaps      %2, %1
+    shufps      %1, %1, q1032
+    addps       %1, %2
+    movaps      %2, %1
+    shufps      %1, %1, q0321
+    addps       %1, %2
+    ; all %1 members should be equal for as long as float a+b==b+a
+%endif
+%endmacro
+
+; Emulate blendvps if not available
+;
+; src_b is destroyed when using emulation with logical operands
+; SSE41 blendv instruction is hard coded to use xmm0 as mask
+%macro BLENDVPS 3 ; dst/src_a, src_b, mask
+%if cpuflag(avx)
+    blendvps  %1, %1, %2, %3
+%elif cpuflag(sse4)
+    %ifnidn %3,xmm0
+        %error sse41 blendvps uses xmm0 as default 3d operand, you used %3
+    %endif
+    blendvps  %1, %2, %3
+%else
+    xorps  %2, %1
+    andps  %2, %3
+    xorps  %1, %2
+%endif
+%endmacro
+
+; Emulate pblendvb if not available
+;
+; src_b is destroyed when using emulation with logical operands
+; SSE41 blendv instruction is hard coded to use xmm0 as mask
+%macro PBLENDVB 3 ; dst/src_a, src_b, mask
+%if cpuflag(avx)
+    %if cpuflag(avx) && notcpuflag(avx2) && sizeof%1 >= 32
+        %error pblendb not possible with ymm on avx1, try blendvps.
+    %endif
+    pblendvb  %1, %1, %2, %3
+%elif cpuflag(sse4)
+    %ifnidn %3,xmm0
+        %error sse41 pblendvd uses xmm0 as default 3d operand, you used %3
+    %endif
+    pblendvb  %1, %2, %3
+%else
+    pxor  %2, %1
+    pand  %2, %3
+    pxor  %1, %2
+%endif
+%endmacro