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| author | Zhao Zhili <zhilizhao@tencent.com> | 2025-02-18 19:24:48 +0800 |
|---|---|---|
| committer | Zhao Zhili <zhilizhao@tencent.com> | 2025-03-04 17:01:58 +0800 |
| commit | a053516e644e07d1e625901539671c3682c7af49 (patch) | |
| tree | e9ed4cead708c3acca80a4342d9f56e1525b16ea | |
| parent | 71a91485fa05c1ca478de153d8839794606f8edc (diff) | |
| download | ffmpeg-a053516e644e07d1e625901539671c3682c7af49.tar.gz | |
avformat/movenc: Add AVS3 support
'avs3' is registered at mp4ra.org. The Avs3ConfigurationBox 'av3c'
inside 'avs3' hasn't been registered yet, but is specified by the
AVS3 spec.
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
| -rw-r--r-- | libavformat/movenc.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libavformat/movenc.c b/libavformat/movenc.c index 76dce9e6e5..af013e1fc6 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -1540,6 +1540,38 @@ static int mov_write_avcc_tag(AVIOContext *pb, MOVTrack *track) return update_size(pb, pos); } +/* AVS3 Intelligent Media Coding + * Information Technology - Intelligent Media Coding + * Part 6: Intelligent Media Format + */ +static int mov_write_av3c(AVIOContext *pb, const uint8_t *data, int len) +{ + if (len < 4) + return AVERROR_INVALIDDATA; + + if (data[0] == 1) { + // In Avs3DecoderConfigurationRecord format + avio_write(pb, data, len); + return 0; + } + + avio_w8(pb, 1); // version + avio_wb16(pb, len); // sequence_header_length + avio_write(pb, data, len); // sequence_header + avio_w8(pb, 0xFC); // Only support library_dependency_idc = 0 + + return 0; +} + +static int mov_write_av3c_tag(AVIOContext *pb, MOVTrack *track) +{ + int64_t pos = avio_tell(pb); + avio_wb32(pb, 0); + ffio_wfourcc(pb, "av3c"); + mov_write_av3c(pb, track->vos_data, track->vos_len); + return update_size(pb, pos); +} + static int mov_write_vpcc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track) { int64_t pos = avio_tell(pb); @@ -2738,6 +2770,8 @@ static int mov_write_video_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex } else if (track->par->codec_id == AV_CODEC_ID_R10K) { if (track->par->codec_tag == MKTAG('R','1','0','k')) mov_write_dpxe_tag(pb, track); + } else if (track->par->codec_id == AV_CODEC_ID_AVS3) { + mov_write_av3c_tag(pb, track); } else if (track->vos_len > 0) mov_write_glbl_tag(pb, track); @@ -8646,6 +8680,8 @@ static const AVCodecTag codec_mp4_tags[] = { { AV_CODEC_ID_PCM_F64BE, MOV_MP4_FPCM_TAG }, { AV_CODEC_ID_PCM_F64LE, MOV_MP4_FPCM_TAG }, + { AV_CODEC_ID_AVS3, MKTAG('a', 'v', 's', '3') }, + { AV_CODEC_ID_NONE, 0 }, }; #if CONFIG_MP4_MUXER || CONFIG_PSP_MUXER |