hevc_support_new.md

HEVC support

For version ~67 and above

in the file:

• src/third_party/ffmpeg/ffmpeg_generated.gni

append to your condition:

ffmpeg_c_sources += [
    "libavcodec/bswapdsp.c",
    "libavcodec/autorename_libavcodec_hevcdec.c",
    "libavcodec/hevc_cabac.c",
    "libavcodec/hevc_data.c",
    "libavcodec/hevc_filter.c",
    "libavcodec/hevc_mvs.c",
    "libavcodec/hevc_parse.c",
    "libavcodec/hevc_parser.c",
    "libavcodec/hevc_ps.c",
    "libavcodec/hevc_refs.c",
    "libavcodec/hevc_sei.c",
    "libavcodec/hevcdsp.c",
    "libavcodec/hevcpred.c",
    "libavcodec/x86/bswapdsp_init.c",
    "libavcodec/x86/hevcdsp_init.c",
    "libavformat/autorename_libavformat_hevc.c",
    "libavformat/hevcdec.c",
]
ffmpeg_yasm_sources += [
    "libavcodec/x86/bswapdsp.asm",
    "libavcodec/x86/hevc_deblock.asm",
    "libavcodec/x86/hevc_idct.asm",
    "libavcodec/x86/hevc_mc.asm",
    "libavcodec/x86/hevc_add_res.asm",
    "libavcodec/x86/hevc_sao.asm",
    "libavcodec/x86/hevc_sao_10bit.asm",
]

then go to src/third_party/ffmpeg folder and copy:

• libavcodec/hevcdec.c to libavcodec/autorename_libavcodec_hevcdec.c
• libavformat/hevc.c to libavformat/autorename_libavformat_hevc.c

in the files:

• src/third_party/ffmpeg/chromium/config/YOUR_BRAND/win/YOUR_ARCH/config.asm
• src/third_party/ffmpeg/chromium/config/YOUR_BRAND/win/YOUR_ARCH/config.h

replace some parameters to:

#define CONFIG_HEVC_DECODER 1
#define CONFIG_HEVC_DEMUXER 1
#define CONFIG_HEVC_PARSER 1

in the file:

• src/third_party/ffmpeg/chromium/config/YOUR_BRAND/win/YOUR_ARCH/libavcodec/codec_list.c

add an option:

&ff_hevc_decoder

in the file:

• src/third_party/ffmpeg/chromium/config/YOUR_BRAND/win/YOUR_ARCH/libavcodec/parser_list.c

add an option:

&ff_hevc_parser

in the file:

• src/third_party/ffmpeg/chromium/config/YOUR_BRAND/win/YOUR_ARCH/libavformat/demuxer_list.c

add an option:

&ff_hevc_demuxer

in the file:

• src/media/base/mime_util_internal.cc

above the line:

if (video_codec != kUnknownVideoCodec) {
...
...

add the code:

if (video_codec == kCodecHEVC) {
#if BUILDFLAG(ENABLE_HEVC_DEMUXING)
  return IsSupported;
#else
  return IsNotSupported;
#endif
}