mirror of https://git.ffmpeg.org/ffmpeg.git
444 lines
16 KiB
C
444 lines
16 KiB
C
/*
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* Copyright (c) 2013 Paul B Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "drawutils.h"
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#include "internal.h"
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#include "video.h"
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#define R 0
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#define G 1
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#define B 2
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#define A 3
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typedef struct ThreadData {
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AVFrame *in, *out;
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} ThreadData;
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typedef struct Range {
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float shadows;
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float midtones;
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float highlights;
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} Range;
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typedef struct ColorBalanceContext {
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const AVClass *class;
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Range cyan_red;
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Range magenta_green;
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Range yellow_blue;
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int preserve_lightness;
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uint8_t rgba_map[4];
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int depth;
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int max;
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int step;
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int (*color_balance)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} ColorBalanceContext;
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#define OFFSET(x) offsetof(ColorBalanceContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption colorbalance_options[] = {
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{ "rs", "set red shadows", OFFSET(cyan_red.shadows), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, FLAGS },
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{ "gs", "set green shadows", OFFSET(magenta_green.shadows), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, FLAGS },
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{ "bs", "set blue shadows", OFFSET(yellow_blue.shadows), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, FLAGS },
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{ "rm", "set red midtones", OFFSET(cyan_red.midtones), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, FLAGS },
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{ "gm", "set green midtones", OFFSET(magenta_green.midtones), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, FLAGS },
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{ "bm", "set blue midtones", OFFSET(yellow_blue.midtones), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, FLAGS },
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{ "rh", "set red highlights", OFFSET(cyan_red.highlights), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, FLAGS },
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{ "gh", "set green highlights", OFFSET(magenta_green.highlights), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, FLAGS },
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{ "bh", "set blue highlights", OFFSET(yellow_blue.highlights), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, FLAGS },
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{ "pl", "preserve lightness", OFFSET(preserve_lightness), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(colorbalance);
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
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AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
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AV_PIX_FMT_ABGR, AV_PIX_FMT_ARGB,
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AV_PIX_FMT_0BGR, AV_PIX_FMT_0RGB,
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AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
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AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48,
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AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_GBRP9,
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AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
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AV_PIX_FMT_GBRP14,
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AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
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AV_PIX_FMT_NONE
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};
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static float get_component(float v, float l,
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float s, float m, float h)
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{
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const float a = 4.f, b = 0.333f, scale = 0.7f;
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s *= av_clipf((b - l) * a + 0.5f, 0.f, 1.f) * scale;
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m *= av_clipf((l - b) * a + 0.5f, 0.f, 1.f) * av_clipf((1.f - l - b) * a + 0.5f, 0.f, 1.f) * scale;
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h *= av_clipf((l + b - 1) * a + 0.5f, 0.f, 1.f) * scale;
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v += s;
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v += m;
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v += h;
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return av_clipf(v, 0.f, 1.f);
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}
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static float hfun(float n, float h, float s, float l)
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{
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float a = s * FFMIN(l, 1.f - l);
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float k = fmodf(n + h / 30.f, 12.f);
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return av_clipf(l - a * FFMAX(FFMIN3(k - 3.f, 9.f - k, 1), -1.f), 0.f, 1.f);
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}
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static void preservel(float *r, float *g, float *b, float l)
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{
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float max = FFMAX3(*r, *g, *b);
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float min = FFMIN3(*r, *g, *b);
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float h, s;
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l *= 0.5f;
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if (*r == *g && *g == *b) {
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h = 0.f;
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} else if (max == *r) {
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h = 60.f * (0.f + (*g - *b) / (max - min));
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} else if (max == *g) {
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h = 60.f * (2.f + (*b - *r) / (max - min));
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} else if (max == *b) {
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h = 60.f * (4.f + (*r - *g) / (max - min));
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} else {
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h = 0.f;
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}
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if (h < 0.f)
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h += 360.f;
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if (max == 1.f || min == 0.f) {
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s = 0.f;
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} else {
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s = (max - min) / (1.f - (FFABS(2.f * l - 1.f)));
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}
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*r = hfun(0.f, h, s, l);
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*g = hfun(8.f, h, s, l);
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*b = hfun(4.f, h, s, l);
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}
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static int color_balance8_p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorBalanceContext *s = ctx->priv;
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ThreadData *td = arg;
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AVFrame *in = td->in;
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AVFrame *out = td->out;
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const int slice_start = (out->height * jobnr) / nb_jobs;
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const int slice_end = (out->height * (jobnr+1)) / nb_jobs;
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const uint8_t *srcg = in->data[0] + slice_start * in->linesize[0];
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const uint8_t *srcb = in->data[1] + slice_start * in->linesize[1];
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const uint8_t *srcr = in->data[2] + slice_start * in->linesize[2];
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const uint8_t *srca = in->data[3] + slice_start * in->linesize[3];
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uint8_t *dstg = out->data[0] + slice_start * out->linesize[0];
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uint8_t *dstb = out->data[1] + slice_start * out->linesize[1];
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uint8_t *dstr = out->data[2] + slice_start * out->linesize[2];
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uint8_t *dsta = out->data[3] + slice_start * out->linesize[3];
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const float max = s->max;
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int i, j;
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for (i = slice_start; i < slice_end; i++) {
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for (j = 0; j < out->width; j++) {
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float r = srcr[j] / max;
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float g = srcg[j] / max;
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float b = srcb[j] / max;
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const float l = FFMAX3(r, g, b) + FFMIN3(r, g, b);
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r = get_component(r, l, s->cyan_red.shadows, s->cyan_red.midtones, s->cyan_red.highlights);
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g = get_component(g, l, s->magenta_green.shadows, s->magenta_green.midtones, s->magenta_green.highlights);
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b = get_component(b, l, s->yellow_blue.shadows, s->yellow_blue.midtones, s->yellow_blue.highlights);
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if (s->preserve_lightness)
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preservel(&r, &g, &b, l);
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dstr[j] = av_clip_uint8(lrintf(r * max));
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dstg[j] = av_clip_uint8(lrintf(g * max));
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dstb[j] = av_clip_uint8(lrintf(b * max));
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if (in != out && out->linesize[3])
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dsta[j] = srca[j];
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}
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srcg += in->linesize[0];
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srcb += in->linesize[1];
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srcr += in->linesize[2];
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srca += in->linesize[3];
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dstg += out->linesize[0];
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dstb += out->linesize[1];
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dstr += out->linesize[2];
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dsta += out->linesize[3];
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}
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return 0;
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}
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static int color_balance16_p(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorBalanceContext *s = ctx->priv;
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ThreadData *td = arg;
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AVFrame *in = td->in;
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AVFrame *out = td->out;
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const int slice_start = (out->height * jobnr) / nb_jobs;
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const int slice_end = (out->height * (jobnr+1)) / nb_jobs;
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const uint16_t *srcg = (const uint16_t *)in->data[0] + slice_start * in->linesize[0] / 2;
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const uint16_t *srcb = (const uint16_t *)in->data[1] + slice_start * in->linesize[1] / 2;
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const uint16_t *srcr = (const uint16_t *)in->data[2] + slice_start * in->linesize[2] / 2;
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const uint16_t *srca = (const uint16_t *)in->data[3] + slice_start * in->linesize[3] / 2;
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uint16_t *dstg = (uint16_t *)out->data[0] + slice_start * out->linesize[0] / 2;
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uint16_t *dstb = (uint16_t *)out->data[1] + slice_start * out->linesize[1] / 2;
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uint16_t *dstr = (uint16_t *)out->data[2] + slice_start * out->linesize[2] / 2;
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uint16_t *dsta = (uint16_t *)out->data[3] + slice_start * out->linesize[3] / 2;
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const int depth = s->depth;
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const float max = s->max;
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int i, j;
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for (i = slice_start; i < slice_end; i++) {
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for (j = 0; j < out->width; j++) {
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float r = srcr[j] / max;
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float g = srcg[j] / max;
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float b = srcb[j] / max;
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const float l = (FFMAX3(r, g, b) + FFMIN3(r, g, b));
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r = get_component(r, l, s->cyan_red.shadows, s->cyan_red.midtones, s->cyan_red.highlights);
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g = get_component(g, l, s->magenta_green.shadows, s->magenta_green.midtones, s->magenta_green.highlights);
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b = get_component(b, l, s->yellow_blue.shadows, s->yellow_blue.midtones, s->yellow_blue.highlights);
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if (s->preserve_lightness)
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preservel(&r, &g, &b, l);
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dstr[j] = av_clip_uintp2_c(lrintf(r * max), depth);
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dstg[j] = av_clip_uintp2_c(lrintf(g * max), depth);
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dstb[j] = av_clip_uintp2_c(lrintf(b * max), depth);
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if (in != out && out->linesize[3])
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dsta[j] = srca[j];
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}
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srcg += in->linesize[0] / 2;
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srcb += in->linesize[1] / 2;
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srcr += in->linesize[2] / 2;
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srca += in->linesize[3] / 2;
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dstg += out->linesize[0] / 2;
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dstb += out->linesize[1] / 2;
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dstr += out->linesize[2] / 2;
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dsta += out->linesize[3] / 2;
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}
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return 0;
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}
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static int color_balance8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorBalanceContext *s = ctx->priv;
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ThreadData *td = arg;
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AVFrame *in = td->in;
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AVFrame *out = td->out;
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AVFilterLink *outlink = ctx->outputs[0];
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const int slice_start = (out->height * jobnr) / nb_jobs;
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const int slice_end = (out->height * (jobnr+1)) / nb_jobs;
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const uint8_t *srcrow = in->data[0] + slice_start * in->linesize[0];
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const uint8_t roffset = s->rgba_map[R];
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const uint8_t goffset = s->rgba_map[G];
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const uint8_t boffset = s->rgba_map[B];
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const uint8_t aoffset = s->rgba_map[A];
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const float max = s->max;
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const int step = s->step;
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uint8_t *dstrow;
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int i, j;
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dstrow = out->data[0] + slice_start * out->linesize[0];
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for (i = slice_start; i < slice_end; i++) {
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const uint8_t *src = srcrow;
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uint8_t *dst = dstrow;
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for (j = 0; j < outlink->w * step; j += step) {
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float r = src[j + roffset] / max;
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float g = src[j + goffset] / max;
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float b = src[j + boffset] / max;
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const float l = (FFMAX3(r, g, b) + FFMIN3(r, g, b));
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r = get_component(r, l, s->cyan_red.shadows, s->cyan_red.midtones, s->cyan_red.highlights);
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g = get_component(g, l, s->magenta_green.shadows, s->magenta_green.midtones, s->magenta_green.highlights);
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b = get_component(b, l, s->yellow_blue.shadows, s->yellow_blue.midtones, s->yellow_blue.highlights);
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if (s->preserve_lightness)
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preservel(&r, &g, &b, l);
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dst[j + roffset] = av_clip_uint8(lrintf(r * max));
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dst[j + goffset] = av_clip_uint8(lrintf(g * max));
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dst[j + boffset] = av_clip_uint8(lrintf(b * max));
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if (in != out && step == 4)
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dst[j + aoffset] = src[j + aoffset];
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}
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srcrow += in->linesize[0];
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dstrow += out->linesize[0];
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}
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return 0;
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}
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static int color_balance16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorBalanceContext *s = ctx->priv;
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ThreadData *td = arg;
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AVFrame *in = td->in;
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AVFrame *out = td->out;
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AVFilterLink *outlink = ctx->outputs[0];
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const int slice_start = (out->height * jobnr) / nb_jobs;
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const int slice_end = (out->height * (jobnr+1)) / nb_jobs;
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const uint16_t *srcrow = (const uint16_t *)in->data[0] + slice_start * in->linesize[0] / 2;
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const uint8_t roffset = s->rgba_map[R];
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const uint8_t goffset = s->rgba_map[G];
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const uint8_t boffset = s->rgba_map[B];
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const uint8_t aoffset = s->rgba_map[A];
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const int step = s->step / 2;
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const int depth = s->depth;
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const float max = s->max;
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uint16_t *dstrow;
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int i, j;
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dstrow = (uint16_t *)out->data[0] + slice_start * out->linesize[0] / 2;
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for (i = slice_start; i < slice_end; i++) {
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const uint16_t *src = srcrow;
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uint16_t *dst = dstrow;
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for (j = 0; j < outlink->w * step; j += step) {
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float r = src[j + roffset] / max;
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float g = src[j + goffset] / max;
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float b = src[j + boffset] / max;
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const float l = (FFMAX3(r, g, b) + FFMIN3(r, g, b));
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r = get_component(r, l, s->cyan_red.shadows, s->cyan_red.midtones, s->cyan_red.highlights);
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g = get_component(g, l, s->magenta_green.shadows, s->magenta_green.midtones, s->magenta_green.highlights);
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b = get_component(b, l, s->yellow_blue.shadows, s->yellow_blue.midtones, s->yellow_blue.highlights);
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if (s->preserve_lightness)
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preservel(&r, &g, &b, l);
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dst[j + roffset] = av_clip_uintp2_c(lrintf(r * max), depth);
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dst[j + goffset] = av_clip_uintp2_c(lrintf(g * max), depth);
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dst[j + boffset] = av_clip_uintp2_c(lrintf(b * max), depth);
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if (in != out && step == 4)
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dst[j + aoffset] = src[j + aoffset];
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}
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srcrow += in->linesize[0] / 2;
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dstrow += out->linesize[0] / 2;
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}
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return 0;
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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ColorBalanceContext *s = ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
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const int depth = desc->comp[0].depth;
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const int max = (1 << depth) - 1;
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const int planar = av_pix_fmt_count_planes(outlink->format) > 1;
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s->depth = depth;
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s->max = max;
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if (max == 255 && planar) {
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s->color_balance = color_balance8_p;
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} else if (planar) {
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s->color_balance = color_balance16_p;
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} else if (max == 255) {
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s->color_balance = color_balance8;
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} else {
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s->color_balance = color_balance16;
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}
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ff_fill_rgba_map(s->rgba_map, outlink->format);
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s->step = av_get_padded_bits_per_pixel(desc) >> 3;
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return 0;
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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ColorBalanceContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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ThreadData td;
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AVFrame *out;
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if (av_frame_is_writable(in)) {
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out = in;
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|
} else {
|
|
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
|
if (!out) {
|
|
av_frame_free(&in);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
av_frame_copy_props(out, in);
|
|
}
|
|
|
|
td.in = in;
|
|
td.out = out;
|
|
ff_filter_execute(ctx, s->color_balance, &td, NULL,
|
|
FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
|
|
|
|
if (in != out)
|
|
av_frame_free(&in);
|
|
return ff_filter_frame(outlink, out);
|
|
}
|
|
|
|
static const AVFilterPad colorbalance_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = filter_frame,
|
|
},
|
|
};
|
|
|
|
static const AVFilterPad colorbalance_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_output,
|
|
},
|
|
};
|
|
|
|
const AVFilter ff_vf_colorbalance = {
|
|
.name = "colorbalance",
|
|
.description = NULL_IF_CONFIG_SMALL("Adjust the color balance."),
|
|
.priv_size = sizeof(ColorBalanceContext),
|
|
.priv_class = &colorbalance_class,
|
|
FILTER_INPUTS(colorbalance_inputs),
|
|
FILTER_OUTPUTS(colorbalance_outputs),
|
|
FILTER_PIXFMTS_ARRAY(pix_fmts),
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
|
|
.process_command = ff_filter_process_command,
|
|
};
|