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h264: increase reference poc list from 16 to 32. 

Interlaced images can have 32 references (16 per field), so limiting the
array size to 16 leads to invalid writes.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
This commit is contained in:
Ronald S. Bultje 2012-03-13 15:21:07 -07:00
parent 86020073db
commit 48cbe4b092
1 changed files with 1 additions and 1 deletions
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libavcodec/mpegvideo.h
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@ -126,7 +126,7 @@ typedef struct Picture{
int pic_id; /**< h264 pic_num (short -> no wrap version of pic_num,
pic_num & max_pic_num; long -> long_pic_num) */
int long_ref; ///< 1->long term reference 0->short term reference
int ref_poc[2][2][16]; ///< h264 POCs of the frames used as reference (FIXME need per slice)
int ref_poc[2][2][32]; ///< h264 POCs of the frames used as reference (FIXME need per slice)
int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
int mbaff; ///< h264 1 -> MBAFF frame 0-> not MBAFF
int field_picture; ///< whether or not the picture was encoded in separate fields