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| author | Michael Niedermayer <michael@niedermayer.cc> | 2016-01-05 01:06:18 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2016-01-05 01:12:42 +0100 |
| commit | 7cc01c25727a96eaaa0c177234b626e47c8ea491 (patch) | |
| tree | ae6881bf3439a37f0dc4cf464b1dc52a599dae3e /libavcodec | |
| parent | 1edf129cbc897447a289ca8b045853df5df1bab3 (diff) | |
avcodec/h264_slice: Fix integer overflow in implicit weight computation
Fixes mozilla bug 1230423
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/h264_slice.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/h264_slice.c b/libavcodec/h264_slice.c index 318302fd10..1ac00591a0 100644 --- a/libavcodec/h264_slice.c +++ b/libavcodec/h264_slice.c @@ -781,7 +781,7 @@ static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, in cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1]; } if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) && - sl->ref_list[0][0].poc + sl->ref_list[1][0].poc == 2 * cur_poc) { + sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2 * cur_poc) { sl->use_weight = 0; sl->use_weight_chroma = 0; return; @@ -802,7 +802,7 @@ static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, in sl->chroma_log2_weight_denom = 5; for (ref0 = ref_start; ref0 < ref_count0; ref0++) { - int poc0 = sl->ref_list[0][ref0].poc; + int64_t poc0 = sl->ref_list[0][ref0].poc; for (ref1 = ref_start; ref1 < ref_count1; ref1++) { int w = 32; if (!sl->ref_list[0][ref0].parent->long_ref && !sl->ref_list[1][ref1].parent->long_ref) { |