1 files changed, 70 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/arm/bswap.h b/media/ffvpx/libavutil/arm/bswap.h
new file mode 100644
index 0000000000..c3460e035d
--- /dev/null
+++ b/media/ffvpx/libavutil/arm/bswap.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_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)
+{
+    unsigned y;
+
+    __asm__("rev16 %0, %1" : "=r"(y) : "r"(x));
+    return y;
+}
+#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)
+{
+    uint32_t y;
+#if HAVE_ARMV6_INLINE
+    __asm__("rev %0, %1" : "=r"(y) : "r"(x));
+#else
+    uint32_t t;
+    __asm__ ("eor %1, %2, %2, ror #16 \n\t"
+             "bic %1, %1, #0xFF0000   \n\t"
+             "mov %0, %2, ror #8      \n\t"
+             "eor %0, %0, %1, lsr #8  \n\t"
+             : "=r"(y), "=&r"(t) : "r"(x));
+#endif /* HAVE_ARMV6_INLINE */
+    return y;
+}
+#endif /* AV_GCC_VERSION_AT_MOST(4,4) */
+
+#endif /* __ARMCC_VERSION */
+
+#endif /* AVUTIL_ARM_BSWAP_H */