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avfilter/vf_rotate: fix several of by 1 errors

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2014-04-19 01:12:54 +02:00
parent 4ebfb2c5ec
commit c9aab1ee7f
2 changed files with 25 additions and 25 deletions
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libavfilter/vf_rotate.c
+5 -5
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@@ -328,8 +328,8 @@ static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
int i, j, x, y;
for (j = start; j < end; j++) {
x = xprime + xi + FIXP*inw/2;
y = yprime + yi + FIXP*inh/2;
x = xprime + xi + FIXP*(inw-1)/2;
y = yprime + yi + FIXP*(inh-1)/2;
for (i = 0; i < outw; i++) {
int32_t v;
@@ -421,9 +421,9 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
.inw = FF_CEIL_RSHIFT(inlink->w, hsub),
.inh = FF_CEIL_RSHIFT(inlink->h, vsub),
.outh = outh, .outw = outw,
.xi = -outw/2 * c, .yi = outw/2 * s,
.xprime = -outh/2 * s,
.yprime = -outh/2 * c,
.xi = -(outw-1) * c / 2, .yi = (outw-1) * s / 2,
.xprime = -(outh-1) * s / 2,
.yprime = -(outh-1) * c / 2,
.plane = plane, .c = c, .s = s };