From: Jun Zhao <barryjz...@tencent.com>
Remove unnecessary max value found, it's will improve the performance
about 10%. Used the test command like:
ffmpeg -i 1080P.mp4 -an -vf normalize -f null /dev/null, the FPS change
from 96fps to 107fps.
Signed-off-by: Jun Zhao <barryjz...@tencent.com>
---
libavfilter/vf_normalize.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/libavfilter/vf_normalize.c b/libavfilter/vf_normalize.c
index 48eea59..40dc031 100644
--- a/libavfilter/vf_normalize.c
+++ b/libavfilter/vf_normalize.c
@@ -143,14 +143,13 @@ static void normalize(NormalizeContext *s, AVFrame *in,
AVFrame *out)
min[c].in = max[c].in = in->data[0][s->co[c]];
for (y = 0; y < in->height; y++) {
uint8_t *inp = in->data[0] + y * in->linesize[0];
- uint8_t *outp = out->data[0] + y * out->linesize[0];
for (x = 0; x < in->width; x++) {
for (c = 0; c < 3; c++) {
- min[c].in = FFMIN(min[c].in, inp[s->co[c]]);
- max[c].in = FFMAX(max[c].in, inp[s->co[c]]);
+ uint8_t val = inp[s->co[c]];
+ if (val < min[c].in) min[c].in = val;
+ else if (val > max[c].in) max[c].in = val;
}
inp += s->step;
- outp += s->step;
}
}
--
1.7.1
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