1 files changed, 190 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/internal.h b/media/ffvpx/libavutil/internal.h
new file mode 100644
index 0000000000..454c59aa50
--- /dev/null
+++ b/media/ffvpx/libavutil/internal.h
@@ -0,0 +1,190 @@
+/*
+ * 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 <stdio.h>
+#include "config.h"
+#include "attributes.h"
+#include "timer.h"
+#include "macros.h"
+#include "pixfmt.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
+
+/* 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 FF_ALLOC_TYPED_ARRAY(p, nelem)  (p = av_malloc_array(nelem, sizeof(*p)))
+#define FF_ALLOCZ_TYPED_ARRAY(p, nelem) (p = av_calloc(nelem, sizeof(*p)))
+
+#define FF_PTR_ADD(ptr, off) ((off) ? (ptr) + (off) : (ptr))
+
+/**
+ * Access a field in a structure by its offset.
+ */
+#define FF_FIELD_AT(type, off, obj) (*(type *)((char *)&(obj) + (off)))
+
+#include "libm.h"
+
+/**
+ * Return NULL if CONFIG_SMALL is true, otherwise the argument
+ * without modification. Used to disable the definition of strings.
+ */
+#if CONFIG_SMALL
+#   define NULL_IF_CONFIG_SMALL(x) NULL
+#else
+#   define NULL_IF_CONFIG_SMALL(x) x
+#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 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
+
+#ifdef TRACE
+#   define ff_tlog(ctx, ...) av_log(ctx, AV_LOG_TRACE, __VA_ARGS__)
+#else
+#   define ff_tlog(ctx, ...) do { } 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
+
+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;
+}
+
+#endif /* AVUTIL_INTERNAL_H */