diff options
Diffstat (limited to 'libass/ass_render.c')
| -rw-r--r-- | libass/ass_render.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/libass/ass_render.c b/libass/ass_render.c index c5824322a3..b46bc9e0f5 100644 --- a/libass/ass_render.c +++ b/libass/ass_render.c @@ -423,10 +423,12 @@ static void render_overlap(ass_image_t** last_tail, ass_image_t** tail, bitmap_h int ax = (*last_tail)->dst_x; int ay = (*last_tail)->dst_y; int aw = (*last_tail)->w; + int as = (*last_tail)->stride; int ah = (*last_tail)->h; int bx = (*tail)->dst_x; int by = (*tail)->dst_y; int bw = (*tail)->w; + int bs = (*tail)->stride; int bh = (*tail)->h; unsigned char* a; unsigned char* b; @@ -472,16 +474,16 @@ static void render_overlap(ass_image_t** last_tail, ass_image_t** tail, bitmap_h // Allocate new bitmaps and copy over data a = (*last_tail)->bitmap; b = (*tail)->bitmap; - (*last_tail)->bitmap = malloc(aw*ah); - (*tail)->bitmap = malloc(bw*bh); - memcpy((*last_tail)->bitmap, a, aw*ah); - memcpy((*tail)->bitmap, b, bw*bh); + (*last_tail)->bitmap = malloc(as*ah); + (*tail)->bitmap = malloc(bs*bh); + memcpy((*last_tail)->bitmap, a, as*ah); + memcpy((*tail)->bitmap, b, bs*bh); // Composite overlapping area for (y=0; y<h; y++) for (x=0; x<w; x++) { - opos = (old_top+y)*(aw) + (old_left+x); - cpos = (cur_top+y)*(bw) + (cur_left+x); + opos = (old_top+y)*(as) + (old_left+x); + cpos = (cur_top+y)*(bs) + (cur_left+x); m = (a[opos] > b[cpos]) ? a[opos] : b[cpos]; (*last_tail)->bitmap[opos] = 0; (*tail)->bitmap[cpos] = m; |