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authorClément Bœsch <ubitux@gmail.com>2013-04-17 12:08:13 +0200
committerClément Bœsch <ubitux@gmail.com>2013-04-17 19:18:08 +0200
commit4c6fa4ef45b934d9a372a35df9b0427054a873b7 (patch)
tree90bf4922bd4b0b569e106ae0af22ae9a9e60e3b7 /libavfilter
parent45f5bf917b5404c3b14fb7413a27aea19abffd56 (diff)
downloadffmpeg-streaming-4c6fa4ef45b934d9a372a35df9b0427054a873b7.zip
ffmpeg-streaming-4c6fa4ef45b934d9a372a35df9b0427054a873b7.tar.gz
lavfi/lut: simplify nested component stepping.
Diffstat (limited to 'libavfilter')
-rw-r--r--libavfilter/vf_lut.c14
1 files changed, 5 insertions, 9 deletions
diff --git a/libavfilter/vf_lut.c b/libavfilter/vf_lut.c
index b272fda..5cc9026 100644
--- a/libavfilter/vf_lut.c
+++ b/libavfilter/vf_lut.c
@@ -285,15 +285,11 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
inrow = inrow0;
outrow = outrow0;
for (j = 0; j < w; j++) {
- outrow[0] = tab[0][inrow[0]];
- if (lut->step>1) {
- outrow[1] = tab[1][inrow[1]];
- if (lut->step>2) {
- outrow[2] = tab[2][inrow[2]];
- if (lut->step>3) {
- outrow[3] = tab[3][inrow[3]];
- }
- }
+ switch (lut->step) {
+ case 3: outrow[3] = tab[3][inrow[3]]; // Fall-through
+ case 2: outrow[2] = tab[2][inrow[2]]; // Fall-through
+ case 1: outrow[1] = tab[1][inrow[1]]; // Fall-through
+ default: outrow[0] = tab[0][inrow[0]];
}
outrow += lut->step;
inrow += lut->step;
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