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| author | Paul B Mahol <onemda@gmail.com> | 2021-08-18 23:31:03 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2021-08-19 09:45:09 +0200 |
| commit | 6d09de90d1a1544e47c959de58189df30de9cda8 (patch) | |
| tree | 52c43c51c5dc5c1950ee2d7bfb29d0e553694f8c | |
| parent | 835eb0a556d678dd65bb1978519c4d62d93c37c4 (diff) | |
| download | ffmpeg-6d09de90d1a1544e47c959de58189df30de9cda8.tar.gz | |
avfilter/vf_paletteuse: fix some integer overflows
| -rw-r--r-- | libavfilter/vf_paletteuse.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/libavfilter/vf_paletteuse.c b/libavfilter/vf_paletteuse.c index 1f1e36ba8e..4b2144c6f9 100644 --- a/libavfilter/vf_paletteuse.c +++ b/libavfilter/vf_paletteuse.c @@ -380,9 +380,9 @@ static av_always_inline int get_dst_color_err(PaletteUseContext *s, if (dstx < 0) return dstx; dstc = s->palette[dstx]; - *er = r - (dstc >> 16 & 0xff); - *eg = g - (dstc >> 8 & 0xff); - *eb = b - (dstc & 0xff); + *er = (int)r - (int)(dstc >> 16 & 0xff); + *eg = (int)g - (int)(dstc >> 8 & 0xff); + *eb = (int)b - (int)(dstc & 0xff); return dstx; } @@ -597,8 +597,8 @@ static int cmp_##name(const void *pa, const void *pb) \ { \ const struct color *a = pa; \ const struct color *b = pb; \ - return (a->value >> (8 * (3 - (pos))) & 0xff) \ - - (b->value >> (8 * (3 - (pos))) & 0xff); \ + return (int)(a->value >> (8 * (3 - (pos))) & 0xff) \ + - (int)(b->value >> (8 * (3 - (pos))) & 0xff); \ } DECLARE_CMP_FUNC(a, 0) @@ -704,7 +704,7 @@ static int colormap_insert(struct color_node *map, /* get the two boxes this node creates */ box1 = box2 = *box; box1.max[component-1] = node->val[component]; - box2.min[component-1] = node->val[component] + 1; + box2.min[component-1] = FFMIN(node->val[component] + 1, 255); node_left_id = colormap_insert(map, color_used, nb_used, palette, trans_thresh, &box1); |