Before this the context could become inconsistent, this lead to a null ptr
dereference.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
int gob_count;
int packed_at_lsb;
int ec;
+ int key_frame_ok;
int quant_table_count;
p->pict_type= AV_PICTURE_TYPE_I; //FIXME I vs. P
if(get_rac(c, &keystate)){
p->key_frame= 1;
+ f->key_frame_ok = 0;
if(read_header(f) < 0)
return -1;
if(init_slices_state(f) < 0)
return -1;
+ f->key_frame_ok = 1;
}else{
+ if (!f->key_frame_ok) {
+ av_log(avctx, AV_LOG_ERROR, "Cant decode non keyframe without valid keyframe\n");
+ return AVERROR_INVALIDDATA;
+ }
p->key_frame= 0;
}
if(f->ac>1){