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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>
(cherry picked from commit bcbe4f3ceb6ee0210d3a401963518906c8b9b230)
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
(cherry picked from commit de75bc01cda53acfbd9f901639695ade8e650c43)
This commit is contained in:
Martin Storsjö 2013-09-16 14:53:15 +03:00 committed by Luca Barbato
parent 3b169044ca
commit 75dabbff8b
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; break;
case RoQ_QUAD_CODEBOOK: case RoQ_QUAD_CODEBOOK:
if (roq->video_stream_index < 0)
return AVERROR_INVALIDDATA;
/* packet needs to contain both this codebook and next VQ chunk */ /* packet needs to contain both this codebook and next VQ chunk */
codebook_offset = avio_tell(pb) - RoQ_CHUNK_PREAMBLE_SIZE; codebook_offset = avio_tell(pb) - RoQ_CHUNK_PREAMBLE_SIZE;
codebook_size = chunk_size; codebook_size = chunk_size;
@ -184,6 +186,11 @@ static int roq_read_packet(AVFormatContext *s,
st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample; st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample;
} }
case RoQ_QUAD_VQ: case RoQ_QUAD_VQ:
if (chunk_type == RoQ_QUAD_VQ) {
if (roq->video_stream_index < 0)
return AVERROR_INVALIDDATA;
}
/* load up the packet */ /* load up the packet */
if (av_new_packet(pkt, chunk_size + RoQ_CHUNK_PREAMBLE_SIZE)) if (av_new_packet(pkt, chunk_size + RoQ_CHUNK_PREAMBLE_SIZE))
return AVERROR(EIO); return AVERROR(EIO);