diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2014-12-30 02:35:32 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-12-30 02:39:36 +0100 |
| commit | 5c7227bbb3c134979fb05d7f06cbc15cfcd3a1d4 (patch) | |
| tree | 8813993d8ff2eb78b720c9679d0eb74d2e1c689f | |
| parent | 60e2c3110ae338fb7ea545f317f952df5acbb349 (diff) | |
| download | ffmpeg-5c7227bbb3c134979fb05d7f06cbc15cfcd3a1d4.tar.gz | |
avfilter/vf_cropdetect: Unroll 3 & 4 bytes per sample loop
19484 -> 10266 decicycles
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavfilter/vf_cropdetect.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavfilter/vf_cropdetect.c b/libavfilter/vf_cropdetect.c index 5b59dbd5dc..abfbd1d76c 100644 --- a/libavfilter/vf_cropdetect.c +++ b/libavfilter/vf_cropdetect.c @@ -81,6 +81,14 @@ static int checkline(void *ctx, const unsigned char *src, int stride, int len, i break; case 3: case 4: + while (len >= 4) { + total += src[0] + src[1 ] + src[2 ] + + src[ stride] + src[1+ stride] + src[2+ stride]; + + src[2*stride] + src[1+2*stride] + src[2+2*stride]; + + src[3*stride] + src[1+3*stride] + src[2+3*stride]; + src += 4*stride; + len -= 4; + } while (--len >= 0) { total += src[0] + src[1] + src[2]; src += stride; |