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ivi_common: check ref_tile size, fix out of array accesses

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-10 01:51:40 +01:00
parent a93c7ca6ef
commit dab70c62d2
1 changed files with 4 additions and 1 deletions
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libavcodec/ivi_common.c
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@ -308,7 +308,10 @@ av_cold int ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_hei
tile->ref_mbs = 0; tile->ref_mbs = 0;
if (p || b) { if (p || b) {
tile->ref_mbs = ref_tile->mbs; if (tile->num_MBs <= ref_tile->num_MBs) {
tile->ref_mbs = ref_tile->mbs;
}else
av_log(0, AV_LOG_DEBUG, "Cannot use ref_tile, too few mbs\n");
ref_tile++; ref_tile++;
} }