546 lines
19 KiB
C
546 lines
19 KiB
C
/*
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* Copyright (c) 2021 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 <float.h>
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#include "libavutil/mem.h"
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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 "internal.h"
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#include "video.h"
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typedef enum AnalyzeMode {
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MANUAL,
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AVERAGE,
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MINMAX,
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MEDIAN,
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NB_ANALYZE
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} AnalyzeMode;
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typedef struct ColorCorrectContext {
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const AVClass *class;
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float rl, bl;
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float rh, bh;
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float saturation;
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int analyze;
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int depth;
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float max, imax;
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int chroma_w, chroma_h;
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int planeheight[4];
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int planewidth[4];
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unsigned *uhistogram;
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unsigned *vhistogram;
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float (*analyzeret)[4];
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int (*do_analyze)(AVFilterContext *s, void *arg,
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int jobnr, int nb_jobs);
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int (*do_slice)(AVFilterContext *s, void *arg,
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int jobnr, int nb_jobs);
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} ColorCorrectContext;
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static int average_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorCorrectContext *s = ctx->priv;
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AVFrame *frame = arg;
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const float imax = s->imax;
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const int width = s->planewidth[1];
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const int height = s->planeheight[1];
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const int slice_start = (height * jobnr) / nb_jobs;
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const int slice_end = (height * (jobnr + 1)) / nb_jobs;
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const ptrdiff_t ulinesize = frame->linesize[1];
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const ptrdiff_t vlinesize = frame->linesize[2];
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const uint8_t *uptr = (const uint8_t *)frame->data[1] + slice_start * ulinesize;
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const uint8_t *vptr = (const uint8_t *)frame->data[2] + slice_start * vlinesize;
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int sum_u = 0, sum_v = 0;
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for (int y = slice_start; y < slice_end; y++) {
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for (int x = 0; x < width; x++) {
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sum_u += uptr[x];
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sum_v += vptr[x];
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}
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uptr += ulinesize;
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vptr += vlinesize;
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}
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s->analyzeret[jobnr][0] = s->analyzeret[jobnr][2] = imax * sum_u / (float)((slice_end - slice_start) * width) - 0.5f;
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s->analyzeret[jobnr][1] = s->analyzeret[jobnr][3] = imax * sum_v / (float)((slice_end - slice_start) * width) - 0.5f;
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return 0;
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}
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static int average_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorCorrectContext *s = ctx->priv;
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AVFrame *frame = arg;
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const float imax = s->imax;
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const int width = s->planewidth[1];
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const int height = s->planeheight[1];
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const int slice_start = (height * jobnr) / nb_jobs;
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const int slice_end = (height * (jobnr + 1)) / nb_jobs;
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const ptrdiff_t ulinesize = frame->linesize[1] / 2;
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const ptrdiff_t vlinesize = frame->linesize[2] / 2;
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const uint16_t *uptr = (const uint16_t *)frame->data[1] + slice_start * ulinesize;
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const uint16_t *vptr = (const uint16_t *)frame->data[2] + slice_start * vlinesize;
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int64_t sum_u = 0, sum_v = 0;
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for (int y = slice_start; y < slice_end; y++) {
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for (int x = 0; x < width; x++) {
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sum_u += uptr[x];
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sum_v += vptr[x];
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}
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uptr += ulinesize;
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vptr += vlinesize;
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}
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s->analyzeret[jobnr][0] = s->analyzeret[jobnr][2] = imax * sum_u / (float)((slice_end - slice_start) * width) - 0.5f;
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s->analyzeret[jobnr][1] = s->analyzeret[jobnr][3] = imax * sum_v / (float)((slice_end - slice_start) * width) - 0.5f;
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return 0;
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}
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static int minmax_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorCorrectContext *s = ctx->priv;
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AVFrame *frame = arg;
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const float imax = s->imax;
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const int width = s->planewidth[1];
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const int height = s->planeheight[1];
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const int slice_start = (height * jobnr) / nb_jobs;
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const int slice_end = (height * (jobnr + 1)) / nb_jobs;
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const ptrdiff_t ulinesize = frame->linesize[1];
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const ptrdiff_t vlinesize = frame->linesize[2];
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const uint8_t *uptr = (const uint8_t *)frame->data[1] + slice_start * ulinesize;
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const uint8_t *vptr = (const uint8_t *)frame->data[2] + slice_start * vlinesize;
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int min_u = 255, min_v = 255;
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int max_u = 0, max_v = 0;
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for (int y = slice_start; y < slice_end; y++) {
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for (int x = 0; x < width; x++) {
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min_u = FFMIN(min_u, uptr[x]);
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min_v = FFMIN(min_v, vptr[x]);
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max_u = FFMAX(max_u, uptr[x]);
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max_v = FFMAX(max_v, vptr[x]);
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}
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uptr += ulinesize;
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vptr += vlinesize;
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}
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s->analyzeret[jobnr][0] = imax * min_u - 0.5f;
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s->analyzeret[jobnr][1] = imax * min_v - 0.5f;
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s->analyzeret[jobnr][2] = imax * max_u - 0.5f;
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s->analyzeret[jobnr][3] = imax * max_v - 0.5f;
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return 0;
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}
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static int minmax_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorCorrectContext *s = ctx->priv;
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AVFrame *frame = arg;
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const float imax = s->imax;
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const int width = s->planewidth[1];
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const int height = s->planeheight[1];
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const int slice_start = (height * jobnr) / nb_jobs;
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const int slice_end = (height * (jobnr + 1)) / nb_jobs;
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const ptrdiff_t ulinesize = frame->linesize[1] / 2;
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const ptrdiff_t vlinesize = frame->linesize[2] / 2;
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const uint16_t *uptr = (const uint16_t *)frame->data[1] + slice_start * ulinesize;
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const uint16_t *vptr = (const uint16_t *)frame->data[2] + slice_start * vlinesize;
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int min_u = INT_MAX, min_v = INT_MAX;
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int max_u = INT_MIN, max_v = INT_MIN;
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for (int y = slice_start; y < slice_end; y++) {
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for (int x = 0; x < width; x++) {
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min_u = FFMIN(min_u, uptr[x]);
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min_v = FFMIN(min_v, vptr[x]);
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max_u = FFMAX(max_u, uptr[x]);
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max_v = FFMAX(max_v, vptr[x]);
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}
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uptr += ulinesize;
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vptr += vlinesize;
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}
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s->analyzeret[jobnr][0] = imax * min_u - 0.5f;
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s->analyzeret[jobnr][1] = imax * min_v - 0.5f;
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s->analyzeret[jobnr][2] = imax * max_u - 0.5f;
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s->analyzeret[jobnr][3] = imax * max_v - 0.5f;
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return 0;
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}
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static int median_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorCorrectContext *s = ctx->priv;
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AVFrame *frame = arg;
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const float imax = s->imax;
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const int width = s->planewidth[1];
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const int height = s->planeheight[1];
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const ptrdiff_t ulinesize = frame->linesize[1];
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const ptrdiff_t vlinesize = frame->linesize[2];
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const uint8_t *uptr = (const uint8_t *)frame->data[1];
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const uint8_t *vptr = (const uint8_t *)frame->data[2];
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unsigned *uhistogram = s->uhistogram;
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unsigned *vhistogram = s->vhistogram;
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const int half_size = width * height / 2;
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int umedian = s->max, vmedian = s->max;
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unsigned ucnt = 0, vcnt = 0;
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memset(uhistogram, 0, sizeof(*uhistogram) * (s->max + 1));
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memset(vhistogram, 0, sizeof(*vhistogram) * (s->max + 1));
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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uhistogram[uptr[x]]++;
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vhistogram[vptr[x]]++;
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}
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uptr += ulinesize;
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vptr += vlinesize;
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}
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for (int i = 0; i < s->max + 1; i++) {
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ucnt += uhistogram[i];
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if (ucnt >= half_size) {
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umedian = i;
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break;
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}
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}
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for (int i = 0; i < s->max + 1; i++) {
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vcnt += vhistogram[i];
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if (vcnt >= half_size) {
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vmedian = i;
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break;
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}
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}
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s->analyzeret[0][0] = imax * umedian - 0.5f;
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s->analyzeret[0][1] = imax * vmedian - 0.5f;
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s->analyzeret[0][2] = imax * umedian - 0.5f;
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s->analyzeret[0][3] = imax * vmedian - 0.5f;
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return 0;
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}
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static int median_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorCorrectContext *s = ctx->priv;
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AVFrame *frame = arg;
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const float imax = s->imax;
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const int width = s->planewidth[1];
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const int height = s->planeheight[1];
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const ptrdiff_t ulinesize = frame->linesize[1] / 2;
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const ptrdiff_t vlinesize = frame->linesize[2] / 2;
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const uint16_t *uptr = (const uint16_t *)frame->data[1];
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const uint16_t *vptr = (const uint16_t *)frame->data[2];
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unsigned *uhistogram = s->uhistogram;
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unsigned *vhistogram = s->vhistogram;
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const int half_size = width * height / 2;
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int umedian = s->max, vmedian = s->max;
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unsigned ucnt = 0, vcnt = 0;
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memset(uhistogram, 0, sizeof(*uhistogram) * (s->max + 1));
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memset(vhistogram, 0, sizeof(*vhistogram) * (s->max + 1));
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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uhistogram[uptr[x]]++;
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vhistogram[vptr[x]]++;
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}
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uptr += ulinesize;
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vptr += vlinesize;
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}
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for (int i = 0; i < s->max + 1; i++) {
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ucnt += uhistogram[i];
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if (ucnt >= half_size) {
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umedian = i;
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break;
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}
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}
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for (int i = 0; i < s->max + 1; i++) {
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vcnt += vhistogram[i];
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if (vcnt >= half_size) {
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vmedian = i;
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break;
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}
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}
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s->analyzeret[0][0] = imax * umedian - 0.5f;
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s->analyzeret[0][1] = imax * vmedian - 0.5f;
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s->analyzeret[0][2] = imax * umedian - 0.5f;
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s->analyzeret[0][3] = imax * vmedian - 0.5f;
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return 0;
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}
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#define PROCESS() \
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float y = yptr[x * chroma_w] * imax; \
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float u = uptr[x] * imax - .5f; \
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float v = vptr[x] * imax - .5f; \
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float nu, nv; \
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\
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nu = saturation * (u + y * bd + bl); \
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nv = saturation * (v + y * rd + rl);
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static int colorcorrect_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorCorrectContext *s = ctx->priv;
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AVFrame *frame = arg;
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const float max = s->max;
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const float imax = s->imax;
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const int chroma_w = s->chroma_w;
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const int chroma_h = s->chroma_h;
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const int width = s->planewidth[1];
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const int height = s->planeheight[1];
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const int slice_start = (height * jobnr) / nb_jobs;
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const int slice_end = (height * (jobnr + 1)) / nb_jobs;
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const ptrdiff_t ylinesize = frame->linesize[0];
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const ptrdiff_t ulinesize = frame->linesize[1];
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const ptrdiff_t vlinesize = frame->linesize[2];
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uint8_t *yptr = frame->data[0] + slice_start * chroma_h * ylinesize;
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uint8_t *uptr = frame->data[1] + slice_start * ulinesize;
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uint8_t *vptr = frame->data[2] + slice_start * vlinesize;
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const float saturation = s->saturation;
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const float bl = s->bl;
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const float rl = s->rl;
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const float bd = s->bh - bl;
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const float rd = s->rh - rl;
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for (int y = slice_start; y < slice_end; y++) {
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for (int x = 0; x < width; x++) {
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PROCESS()
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uptr[x] = av_clip_uint8((nu + 0.5f) * max);
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vptr[x] = av_clip_uint8((nv + 0.5f) * max);
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}
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yptr += ylinesize * chroma_h;
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uptr += ulinesize;
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vptr += vlinesize;
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}
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return 0;
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}
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static int colorcorrect_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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ColorCorrectContext *s = ctx->priv;
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AVFrame *frame = arg;
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const int depth = s->depth;
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const float max = s->max;
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const float imax = s->imax;
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const int chroma_w = s->chroma_w;
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const int chroma_h = s->chroma_h;
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const int width = s->planewidth[1];
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const int height = s->planeheight[1];
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const int slice_start = (height * jobnr) / nb_jobs;
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const int slice_end = (height * (jobnr + 1)) / nb_jobs;
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const ptrdiff_t ylinesize = frame->linesize[0] / 2;
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const ptrdiff_t ulinesize = frame->linesize[1] / 2;
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const ptrdiff_t vlinesize = frame->linesize[2] / 2;
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uint16_t *yptr = (uint16_t *)frame->data[0] + slice_start * chroma_h * ylinesize;
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uint16_t *uptr = (uint16_t *)frame->data[1] + slice_start * ulinesize;
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uint16_t *vptr = (uint16_t *)frame->data[2] + slice_start * vlinesize;
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const float saturation = s->saturation;
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const float bl = s->bl;
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const float rl = s->rl;
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const float bd = s->bh - bl;
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const float rd = s->rh - rl;
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for (int y = slice_start; y < slice_end; y++) {
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for (int x = 0; x < width; x++) {
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PROCESS()
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uptr[x] = av_clip_uintp2_c((nu + 0.5f) * max, depth);
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vptr[x] = av_clip_uintp2_c((nv + 0.5f) * max, depth);
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}
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yptr += ylinesize * chroma_h;
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uptr += ulinesize;
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vptr += vlinesize;
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}
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return 0;
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
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{
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AVFilterContext *ctx = inlink->dst;
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ColorCorrectContext *s = ctx->priv;
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const int nb_threads = s->analyze == MEDIAN ? 1 : FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx));
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if (s->analyze) {
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const int nb_athreads = s->analyze == MEDIAN ? 1 : nb_threads;
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float bl = 0.f, rl = 0.f, bh = 0.f, rh = 0.f;
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ff_filter_execute(ctx, s->do_analyze, frame, NULL, nb_athreads);
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for (int i = 0; i < nb_athreads; i++) {
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bl += s->analyzeret[i][0];
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rl += s->analyzeret[i][1];
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bh += s->analyzeret[i][2];
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rh += s->analyzeret[i][3];
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}
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bl /= nb_athreads;
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rl /= nb_athreads;
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bh /= nb_athreads;
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rh /= nb_athreads;
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s->bl = -bl;
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s->rl = -rl;
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s->bh = -bh;
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s->rh = -rh;
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}
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ff_filter_execute(ctx, s->do_slice, frame, NULL, nb_threads);
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return ff_filter_frame(ctx->outputs[0], frame);
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}
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static const enum AVPixelFormat pixel_fmts[] = {
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV440P10, AV_PIX_FMT_YUV444P10,
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AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV440P12, AV_PIX_FMT_YUV420P12,
|
|
AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
|
|
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
|
|
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
|
|
AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
|
|
AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
|
|
AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
|
|
AV_PIX_FMT_NONE
|
|
};
|
|
|
|
static av_cold int config_input(AVFilterLink *inlink)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
ColorCorrectContext *s = ctx->priv;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
|
|
s->depth = desc->comp[0].depth;
|
|
s->max = (1 << s->depth) - 1;
|
|
s->imax = 1.f / s->max;
|
|
s->do_slice = s->depth <= 8 ? colorcorrect_slice8 : colorcorrect_slice16;
|
|
|
|
s->uhistogram = av_calloc(s->max == 255 ? 256 : 65536, sizeof(*s->uhistogram));
|
|
if (!s->uhistogram)
|
|
return AVERROR(ENOMEM);
|
|
|
|
s->vhistogram = av_calloc(s->max == 255 ? 256 : 65536, sizeof(*s->vhistogram));
|
|
if (!s->vhistogram)
|
|
return AVERROR(ENOMEM);
|
|
|
|
s->analyzeret = av_calloc(inlink->h, sizeof(*s->analyzeret));
|
|
if (!s->analyzeret)
|
|
return AVERROR(ENOMEM);
|
|
|
|
switch (s->analyze) {
|
|
case MANUAL:
|
|
break;
|
|
case AVERAGE:
|
|
s->do_analyze = s->depth <= 8 ? average_slice8 : average_slice16;
|
|
break;
|
|
case MINMAX:
|
|
s->do_analyze = s->depth <= 8 ? minmax_slice8 : minmax_slice16;
|
|
break;
|
|
case MEDIAN:
|
|
s->do_analyze = s->depth <= 8 ? median_8 : median_16;
|
|
break;
|
|
default:
|
|
return AVERROR_BUG;
|
|
}
|
|
|
|
s->chroma_w = 1 << desc->log2_chroma_w;
|
|
s->chroma_h = 1 << desc->log2_chroma_h;
|
|
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
|
|
s->planeheight[0] = s->planeheight[3] = inlink->h;
|
|
s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
|
|
s->planewidth[0] = s->planewidth[3] = inlink->w;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
ColorCorrectContext *s = ctx->priv;
|
|
|
|
av_freep(&s->analyzeret);
|
|
av_freep(&s->uhistogram);
|
|
av_freep(&s->vhistogram);
|
|
}
|
|
|
|
static const AVFilterPad colorcorrect_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
|
|
.filter_frame = filter_frame,
|
|
.config_props = config_input,
|
|
},
|
|
};
|
|
|
|
#define OFFSET(x) offsetof(ColorCorrectContext, x)
|
|
#define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
|
|
|
|
static const AVOption colorcorrect_options[] = {
|
|
{ "rl", "set the red shadow spot", OFFSET(rl), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },
|
|
{ "bl", "set the blue shadow spot", OFFSET(bl), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },
|
|
{ "rh", "set the red highlight spot", OFFSET(rh), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },
|
|
{ "bh", "set the blue highlight spot", OFFSET(bh), AV_OPT_TYPE_FLOAT, {.dbl=0}, -1, 1, VF },
|
|
{ "saturation", "set the amount of saturation", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl=1}, -3, 3, VF },
|
|
{ "analyze", "set the analyze mode", OFFSET(analyze), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_ANALYZE-1, VF, .unit = "analyze" },
|
|
{ "manual", "manually set options", 0, AV_OPT_TYPE_CONST, {.i64=MANUAL}, 0, 0, VF, .unit = "analyze" },
|
|
{ "average", "use average pixels", 0, AV_OPT_TYPE_CONST, {.i64=AVERAGE}, 0, 0, VF, .unit = "analyze" },
|
|
{ "minmax", "use minmax pixels", 0, AV_OPT_TYPE_CONST, {.i64=MINMAX}, 0, 0, VF, .unit = "analyze" },
|
|
{ "median", "use median pixels", 0, AV_OPT_TYPE_CONST, {.i64=MEDIAN}, 0, 0, VF, .unit = "analyze" },
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(colorcorrect);
|
|
|
|
const AVFilter ff_vf_colorcorrect = {
|
|
.name = "colorcorrect",
|
|
.description = NULL_IF_CONFIG_SMALL("Adjust color white balance selectively for blacks and whites."),
|
|
.priv_size = sizeof(ColorCorrectContext),
|
|
.priv_class = &colorcorrect_class,
|
|
.uninit = uninit,
|
|
FILTER_INPUTS(colorcorrect_inputs),
|
|
FILTER_OUTPUTS(ff_video_default_filterpad),
|
|
FILTER_PIXFMTS_ARRAY(pixel_fmts),
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
|
|
.process_command = ff_filter_process_command,
|
|
};
|