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avfilter/vf_rotate: use vsub for output plane height calculation

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Output plane height used horizontal instead of vertical subsampling.
This is just cosmetic change as filter does not support formats where
vertical subsampling does not match horizontal one.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-09-29 19:07:15 +00:00
parent 5a47f12390
commit 61274193e3
1 changed files with 1 additions and 1 deletions
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libavfilter/vf_rotate.c
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@ -337,7 +337,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
int inw = FF_CEIL_RSHIFT(inlink->w, hsub);
int inh = FF_CEIL_RSHIFT(inlink->h, vsub);
int outw = FF_CEIL_RSHIFT(outlink->w, hsub);
int outh = FF_CEIL_RSHIFT(outlink->h, hsub);
int outh = FF_CEIL_RSHIFT(outlink->h, vsub);
const int xi = -outw/2 * c;
const int yi = outw/2 * s;