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Code Issues Releases Activity

avfilter/vf_vibrance: factor some calculations out of loop

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This commit is contained in:
Paul B Mahol 2019-05-05 13:09:37 +02:00
parent e384f6f2f9
commit 526bc2205b
1 changed files with 20 additions and 12 deletions
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32
libavfilter/vf_vibrance.c
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@ -49,6 +49,7 @@ static int vibrance_slice8(AVFilterContext *avctx, void *arg, int jobnr, int nb_
AVFrame *frame = arg;
const int width = frame->width;
const int height = frame->height;
const float scale = 1.f / 255.f;
const float gc = s->lcoeffs[0];
const float bc = s->lcoeffs[1];
const float rc = s->lcoeffs[2];
@ -56,6 +57,9 @@ static int vibrance_slice8(AVFilterContext *avctx, void *arg, int jobnr, int nb_
const float gintensity = intensity * s->balance[0];
const float bintensity = intensity * s->balance[1];
const float rintensity = intensity * s->balance[2];
const float sgintensity = FFSIGN(intensity);
const float sbintensity = FFSIGN(intensity);
const float srintensity = FFSIGN(intensity);
const int slice_start = (height * jobnr) / nb_jobs;
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
const int glinesize = frame->linesize[0];
@ -67,16 +71,16 @@ static int vibrance_slice8(AVFilterContext *avctx, void *arg, int jobnr, int nb_
for (int y = slice_start; y < slice_end; y++) {
for (int x = 0; x < width; x++) {
float g = gptr[x] / 255.f;
float b = bptr[x] / 255.f;
float r = rptr[x] / 255.f;
float g = gptr[x] * scale;
float b = bptr[x] * scale;
float r = rptr[x] * scale;
float max_color = FFMAX3(r, g, b);
float min_color = FFMIN3(r, g, b);
float color_saturation = max_color - min_color;
float luma = g * gc + r * rc + b * bc;
const float cg = 1.f + gintensity * (1.f - FFSIGN(gintensity) * color_saturation);
const float cb = 1.f + bintensity * (1.f - FFSIGN(bintensity) * color_saturation);
const float cr = 1.f + rintensity * (1.f - FFSIGN(rintensity) * color_saturation);
const float cg = 1.f + gintensity * (1.f - sgintensity * color_saturation);
const float cb = 1.f + bintensity * (1.f - sbintensity * color_saturation);
const float cr = 1.f + rintensity * (1.f - srintensity * color_saturation);
g = lerpf(luma, g, cg);
b = lerpf(luma, b, cb);
@ -101,6 +105,7 @@ static int vibrance_slice16(AVFilterContext *avctx, void *arg, int jobnr, int nb
AVFrame *frame = arg;
const int depth = s->depth;
const float max = (1 << depth) - 1;
const float scale = 1.f / max;
const float gc = s->lcoeffs[0];
const float bc = s->lcoeffs[1];
const float rc = s->lcoeffs[2];
@ -110,6 +115,9 @@ static int vibrance_slice16(AVFilterContext *avctx, void *arg, int jobnr, int nb
const float gintensity = intensity * s->balance[0];
const float bintensity = intensity * s->balance[1];
const float rintensity = intensity * s->balance[2];
const float sgintensity = FFSIGN(intensity);
const float sbintensity = FFSIGN(intensity);
const float srintensity = FFSIGN(intensity);
const int slice_start = (height * jobnr) / nb_jobs;
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
const int glinesize = frame->linesize[0] / 2;
@ -121,16 +129,16 @@ static int vibrance_slice16(AVFilterContext *avctx, void *arg, int jobnr, int nb
for (int y = slice_start; y < slice_end; y++) {
for (int x = 0; x < width; x++) {
float g = gptr[x] / max;
float b = bptr[x] / max;
float r = rptr[x] / max;
float g = gptr[x] * scale;
float b = bptr[x] * scale;
float r = rptr[x] * scale;
float max_color = FFMAX3(r, g, b);
float min_color = FFMIN3(r, g, b);
float color_saturation = max_color - min_color;
float luma = g * gc + r * rc + b * bc;
const float cg = 1.f + gintensity * (1.f - FFSIGN(gintensity) * color_saturation);
const float cb = 1.f + bintensity * (1.f - FFSIGN(bintensity) * color_saturation);
const float cr = 1.f + rintensity * (1.f - FFSIGN(rintensity) * color_saturation);
const float cg = 1.f + gintensity * (1.f - sgintensity * color_saturation);
const float cb = 1.f + bintensity * (1.f - sbintensity * color_saturation);
const float cr = 1.f + rintensity * (1.f - srintensity * color_saturation);
g = lerpf(luma, g, cg);
b = lerpf(luma, b, cb);