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Code Issues Releases Activity

mpegts: demux synchronous SMPTE 336M Key-Length-Value (KLV) metadata

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Fixes ticket #2579.
This commit is contained in:
Peter Ross 2013-02-05 22:01:11 +11:00 committed by Michael Niedermayer
parent 162126bb17
commit 69a042ee95
1 changed files with 20 additions and 0 deletions
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20
libavformat/mpegts.c
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@ -640,6 +640,11 @@ static const StreamType REGD_types[] = {
{ 0 },
};
static const StreamType METADATA_types[] = {
{ MKTAG('K','L','V','A'), AVMEDIA_TYPE_DATA, AV_CODEC_ID_SMPTE_KLV },
{ 0 },
};
/* descriptor present */
static const StreamType DESC_types[] = {
{ 0x6a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, /* AC-3 descriptor */
@ -1002,6 +1007,12 @@ static int mpegts_push_data(MpegTSFilter *filter,
p += sl_header_bytes;
buf_size -= sl_header_bytes;
}
if (pes->stream_type == 0x15 && buf_size >= 5) {
/* skip metadata access unit header */
pes->pes_header_size += 5;
p += 5;
buf_size -= 5;
}
if (pes->ts->fix_teletext_pts && pes->st->codec->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
AVProgram *p = NULL;
while ((p = av_find_program_from_stream(pes->stream, p, pes->st->index))) {
@ -1489,6 +1500,15 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type
case 0x52: /* stream identifier descriptor */
st->stream_identifier = 1 + get8(pp, desc_end);
break;
case 0x26: /* metadata descriptor */
if (get16(pp, desc_end) == 0xFFFF)
*pp += 4;
if (get8(pp, desc_end) == 0xFF) {
st->codec->codec_tag = bytestream_get_le32(pp);
if (st->codec->codec_id == AV_CODEC_ID_NONE)
mpegts_find_stream_type(st, st->codec->codec_tag, METADATA_types);
}
break;
default:
break;
}