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Code Issues Releases Activity

avformat/flvdec: add support for reading multi track audio

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This commit is contained in:
Timo Rothenpieler
2024-05-18 23:20:46 +02:00
parent bbf1f3cf6f
commit 25faaa311a
1 changed files with 18 additions and 3 deletions
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21
libavformat/flvdec.c
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@ -1338,12 +1338,26 @@ retry:
pkt_type = flags & ~FLV_AUDIO_CODECID_MASK;
if (pkt_type == AudioPacketTypeMultitrack) {
av_log(s, AV_LOG_ERROR, "Multitrack audio is unsupported!\n");
return AVERROR_PATCHWELCOME;
uint8_t types = avio_r8(s->pb);
int multitrack_type = types >> 4;
pkt_type = types & 0xF;
if (multitrack_type != MultitrackTypeOneTrack) {
av_log(s, AV_LOG_ERROR, "Audio multitrack types other than MultitrackTypeOneTrack are unsupported!\n");
return AVERROR_PATCHWELCOME;
}
multitrack = 1;
size--;
}
codec_id = avio_rb32(s->pb);
size -= 4;
if (multitrack) {
track_idx = avio_r8(s->pb);
size--;
}
}
} else if (type == FLV_TAG_TYPE_VIDEO) {
stream_type = FLV_STREAM_TYPE_VIDEO;
@ -1440,7 +1454,8 @@ skip:
st = s->streams[i];
if (stream_type == FLV_STREAM_TYPE_AUDIO) {
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
(s->audio_codec_id || flv_same_audio_codec(st->codecpar, flags, codec_id)))
(s->audio_codec_id || flv_same_audio_codec(st->codecpar, flags, codec_id)) &&
st->id == track_idx)
break;
} else if (stream_type == FLV_STREAM_TYPE_VIDEO) {
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&