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h264: check log2_max_poc_lsb for validity

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-07-01 19:25:17 +02:00
parent aa1cceb5eb
commit 0c9283a03f
1 changed files with 6 additions and 1 deletions
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7
libavcodec/h264_ps.c
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@ -380,7 +380,12 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){
sps->poc_type= get_ue_golomb_31(&s->gb);
if(sps->poc_type == 0){ //FIXME #define
sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4;
unsigned t = get_ue_golomb(&s->gb);
if(t>12){
av_log(h->s.avctx, AV_LOG_ERROR, "log2_max_poc_lsb (%d) is out of range\n", t);
goto fail;
}
sps->log2_max_poc_lsb= t + 4;
} else if(sps->poc_type == 1){//FIXME #define
sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb);
sps->offset_for_non_ref_pic= get_se_golomb(&s->gb);