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Code Issues Releases Activity

rv40: prevent undefined signed overflow in rv40_loop_filter()

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Janne Grunau 2012-02-13 22:12:54 +01:00
parent 29330721b0
commit b54b40b33c
1 changed files with 3 additions and 2 deletions
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5
libavcodec/rv40.c
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@ -357,7 +357,7 @@ static void rv40_loop_filter(RV34DecContext *r, int row)
* in addition to the coded ones because because they lie at the edge of * in addition to the coded ones because because they lie at the edge of
* 8x8 block with different enough motion vectors * 8x8 block with different enough motion vectors
*/ */
int mvmasks[4]; unsigned mvmasks[4];
mb_pos = row * s->mb_stride; mb_pos = row * s->mb_stride;
for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){ for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
@ -373,7 +373,8 @@ static void rv40_loop_filter(RV34DecContext *r, int row)
int c_v_deblock[2], c_h_deblock[2]; int c_v_deblock[2], c_h_deblock[2];
int clip_left; int clip_left;
int avail[4]; int avail[4];
int y_to_deblock, c_to_deblock[2]; unsigned y_to_deblock;
int c_to_deblock[2];
q = s->current_picture_ptr->f.qscale_table[mb_pos]; q = s->current_picture_ptr->f.qscale_table[mb_pos];
alpha = rv40_alpha_tab[q]; alpha = rv40_alpha_tab[q];