[FFmpeg-devel] [PATCH 2/9] avfilter/vf_perspective: use lrint instead of floor hack
Ganesh Ajjanagadde
gajjanagadde at gmail.com
Wed Dec 2 01:27:51 CET 2015
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde at gmail.com>
---
libavfilter/vf_perspective.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/libavfilter/vf_perspective.c b/libavfilter/vf_perspective.c
index 970870c..13053f1 100644
--- a/libavfilter/vf_perspective.c
+++ b/libavfilter/vf_perspective.c
@@ -213,10 +213,10 @@ static int config_input(AVFilterLink *inlink)
for (x = 0; x < w; x++){
int u, v;
- u = (int)floor(SUB_PIXELS * (x0 * x + x1 * y + x2) /
- (x6 * x + x7 * y + x8) + 0.5);
- v = (int)floor(SUB_PIXELS * (x3 * x + x4 * y + x5) /
- (x6 * x + x7 * y + x8) + 0.5);
+ u = lrint(SUB_PIXELS * (x0 * x + x1 * y + x2) /
+ (x6 * x + x7 * y + x8));
+ v = lrint(SUB_PIXELS * (x3 * x + x4 * y + x5) /
+ (x6 * x + x7 * y + x8));
s->pv[x + y * w][0] = u;
s->pv[x + y * w][1] = v;
@@ -235,7 +235,7 @@ static int config_input(AVFilterLink *inlink)
sum += temp[j];
for (j = 0; j < 4; j++)
- s->coeff[i][j] = (int)floor((1 << COEFF_BITS) * temp[j] / sum + 0.5);
+ s->coeff[i][j] = lrint((1 << COEFF_BITS) * temp[j] / sum);
}
return 0;
--
2.6.2
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