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ff_mp4_read_dec_config_descr: check that the codec is not open

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Fixes out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-12-03 17:27:19 +01:00
parent f2ceb67e5b
commit 4c160b68cc
1 changed files with 5 additions and 0 deletions
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5
libavformat/isom.c
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@ -433,6 +433,11 @@ int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext
avio_rb32(pb); /* max bitrate */
avio_rb32(pb); /* avg bitrate */
if(avcodec_is_open(st->codec)) {
av_log(fc, AV_LOG_DEBUG, "codec open in read_dec_config_descr\n");
return -1;
}
st->codec->codec_id= ff_codec_get_id(ff_mp4_obj_type, object_type_id);
av_dlog(fc, "esds object type id 0x%02x\n", object_type_id);
len = ff_mp4_read_descr(fc, pb, &tag);