[FFmpeg-cvslog] avfilter/vf_blend: clip result for divide blend mode
Paul B Mahol
git at videolan.org
Tue Jun 2 21:24:37 CEST 2015
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Tue Jun 2 18:48:32 2015 +0000| [ac973926b8c77087f1d0c2bb57ba3d5c767a784e] | committer: Paul B Mahol
avfilter/vf_blend: clip result for divide blend mode
Pointed-out-by: Rudolf Polzer
Signed-off-by: Paul B Mahol <onemda at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ac973926b8c77087f1d0c2bb57ba3d5c767a784e
---
libavfilter/vf_blend.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavfilter/vf_blend.c b/libavfilter/vf_blend.c
index 5fe7046..49711ac 100644
--- a/libavfilter/vf_blend.c
+++ b/libavfilter/vf_blend.c
@@ -203,7 +203,7 @@ DEFINE_BLEND(overlay, (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
DEFINE_BLEND(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
DEFINE_BLEND(darken, FFMIN(A, B))
DEFINE_BLEND(lighten, FFMAX(A, B))
-DEFINE_BLEND(divide, ((float)A / ((float)B) * 255))
+DEFINE_BLEND(divide, av_clip_uint8(((float)A / ((float)B) * 255)))
DEFINE_BLEND(dodge, DODGE(A, B))
DEFINE_BLEND(burn, BURN(A, B))
DEFINE_BLEND(softlight, (A > 127) ? B + (255 - B) * (A - 127.5) / 127.5 * (0.5 - FFABS(B - 127.5) / 255): B - B * ((127.5 - A) / 127.5) * (0.5 - FFABS(B - 127.5)/255))
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