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latmenc: Check for LOAS sync word

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Write the packet unaltered if found.

Fixes ticket #1917

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
James Almer 2013-01-16 18:27:14 -03:00 committed by Michael Niedermayer
parent c345100efc
commit b454c64e03
1 changed files with 9 additions and 0 deletions
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9
libavformat/latmenc.c
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@ -156,6 +156,15 @@ static int latm_write_packet(AVFormatContext *s, AVPacket *pkt)
av_log(s, AV_LOG_ERROR, "ADTS header detected - ADTS will not be incorrectly muxed into LATM\n");
return AVERROR_INVALIDDATA;
}
if (!s->streams[0]->codec->extradata) {
if(pkt->size > 2 && pkt->data[0] == 0x56 && (pkt->data[1] >> 4) == 0xe &&
(AV_RB16(pkt->data + 1) & 0x1FFF) + 3 == pkt->size)
return ff_raw_write_packet(s, pkt);
else
return AVERROR_INVALIDDATA;
}
if (pkt->size > 0x1fff)
goto too_large;