[FFmpeg-cvslog] lavfi/blend: fix SW/SH calculation

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Fri May 24 17:34:22 2013 +0000| [af125739382370541139df1eadf30eac64b95a0a] | committer: Paul B Mahol

lavfi/blend: fix SW/SH calculation

Signed-off-by: Paul B Mahol <onemda at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=af125739382370541139df1eadf30eac64b95a0a
---

 libavfilter/vf_blend.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavfilter/vf_blend.c b/libavfilter/vf_blend.c
index 6b46996..cb3d1c1 100644
--- a/libavfilter/vf_blend.c
+++ b/libavfilter/vf_blend.c
@@ -383,8 +383,8 @@ static void blend_frame(AVFilterContext *ctx,
         param->values[VAR_T]  = dst_buf->pts == AV_NOPTS_VALUE ? NAN : dst_buf->pts * av_q2d(inlink->time_base);
         param->values[VAR_W]  = outw;
         param->values[VAR_H]  = outh;
-        param->values[VAR_SW] = outw / dst_buf->width;
-        param->values[VAR_SH] = outh / dst_buf->height;
+        param->values[VAR_SW] = outw / (double)dst_buf->width;
+        param->values[VAR_SH] = outh / (double)dst_buf->height;
         param->blend(top, top_buf->linesize[plane],
                      bottom, bottom_buf->linesize[plane],
                      dst, dst_buf->linesize[plane], outw, outh, param);