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idroqdec: Make sure a video stream has been allocated before returning packets

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-09-16 14:53:15 +03:00
parent 5372cda671
commit bcbe4f3ceb
1 changed files with 7 additions and 0 deletions
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7
libavformat/idroqdec.c
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@ -142,6 +142,8 @@ static int roq_read_packet(AVFormatContext *s,
break;
case RoQ_QUAD_CODEBOOK:
if (roq->video_stream_index < 0)
return AVERROR_INVALIDDATA;
/* packet needs to contain both this codebook and next VQ chunk */
codebook_offset = avio_tell(pb) - RoQ_CHUNK_PREAMBLE_SIZE;
codebook_size = chunk_size;
@ -191,6 +193,11 @@ static int roq_read_packet(AVFormatContext *s,
st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample;
}
case RoQ_QUAD_VQ:
if (chunk_type == RoQ_QUAD_VQ) {
if (roq->video_stream_index < 0)
return AVERROR_INVALIDDATA;
}
/* load up the packet */
if (av_new_packet(pkt, chunk_size + RoQ_CHUNK_PREAMBLE_SIZE))
return AVERROR(EIO);