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author | Paul B Mahol <onemda@gmail.com> | 2022-12-05 15:35:05 +0100 |
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committer | Paul B Mahol <onemda@gmail.com> | 2022-12-05 21:07:11 +0100 |
commit | 46642ceeafeee5b8cbc82ff32ce3dcd7c73af159 (patch) | |
tree | 88f0ce24a950ef6225d85b75f5e271f066878cc6 /libavfilter/vf_thumbnail.c | |
parent | 6c814093d8a0351d0a5f5264deba2285a436e88a (diff) | |
download | ffmpeg-46642ceeafeee5b8cbc82ff32ce3dcd7c73af159.tar.gz |
avfilter/vf_thumbnail: optimize planar processing path
Diffstat (limited to 'libavfilter/vf_thumbnail.c')
-rw-r--r-- | libavfilter/vf_thumbnail.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/libavfilter/vf_thumbnail.c b/libavfilter/vf_thumbnail.c index 0622e3706e..f66af760a3 100644 --- a/libavfilter/vf_thumbnail.c +++ b/libavfilter/vf_thumbnail.c @@ -191,11 +191,14 @@ static int do_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) const int slice_start = (s->planeheight[plane] * jobnr) / nb_jobs; const int slice_end = (s->planeheight[plane] * (jobnr+1)) / nb_jobs; const uint8_t *p = frame->data[plane] + slice_start * frame->linesize[plane]; + const ptrdiff_t linesize = frame->linesize[plane]; + const int planewidth = s->planewidth[plane]; + int *hhist = hist + 256 * plane; for (int j = slice_start; j < slice_end; j++) { - for (int i = 0; i < s->planewidth[plane]; i++) - hist[256*plane + p[i]]++; - p += frame->linesize[plane]; + for (int i = 0; i < planewidth; i++) + hhist[p[i]]++; + p += linesize; } } break; |