mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-12 02:14:56 +02:00
381 lines
13 KiB
C
381 lines
13 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 "formats.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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double shadows;
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double midtones;
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double 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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uint16_t lut[3][65536];
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uint8_t rgba_map[4];
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int step;
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int (*apply_lut)(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
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static const AVOption colorbalance_options[] = {
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{ "rs", "set red shadows", OFFSET(cyan_red.shadows), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
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{ "gs", "set green shadows", OFFSET(magenta_green.shadows), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
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{ "bs", "set blue shadows", OFFSET(yellow_blue.shadows), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
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{ "rm", "set red midtones", OFFSET(cyan_red.midtones), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
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{ "gm", "set green midtones", OFFSET(magenta_green.midtones), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
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{ "bm", "set blue midtones", OFFSET(yellow_blue.midtones), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
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{ "rh", "set red highlights", OFFSET(cyan_red.highlights), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
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{ "gh", "set green highlights", OFFSET(magenta_green.highlights), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
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{ "bh", "set blue highlights", OFFSET(yellow_blue.highlights), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(colorbalance);
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static int query_formats(AVFilterContext *ctx)
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{
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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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AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
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if (!fmts_list)
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return AVERROR(ENOMEM);
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return ff_set_common_formats(ctx, fmts_list);
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}
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static int apply_lut8_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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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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dstg[j] = s->lut[G][srcg[j]];
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dstb[j] = s->lut[B][srcb[j]];
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dstr[j] = s->lut[R][srcr[j]];
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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 apply_lut16_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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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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dstg[j] = s->lut[G][srcg[j]];
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dstb[j] = s->lut[B][srcb[j]];
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dstr[j] = s->lut[R][srcr[j]];
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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 apply_lut8(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 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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dst[j + roffset] = s->lut[R][src[j + roffset]];
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dst[j + goffset] = s->lut[G][src[j + goffset]];
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dst[j + boffset] = s->lut[B][src[j + boffset]];
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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 apply_lut16(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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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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dst[j + roffset] = s->lut[R][src[j + roffset]];
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dst[j + goffset] = s->lut[G][src[j + goffset]];
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dst[j + boffset] = s->lut[B][src[j + boffset]];
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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;
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const int planar = av_pix_fmt_count_planes(outlink->format) > 1;
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double *shadows, *midtones, *highlights, *buffer;
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int i, r, g, b;
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if (max == 256 && planar) {
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s->apply_lut = apply_lut8_p;
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} else if (planar) {
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s->apply_lut = apply_lut16_p;
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} else if (max == 256) {
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s->apply_lut = apply_lut8;
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} else {
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s->apply_lut = apply_lut16;
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}
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buffer = av_malloc(max * 3 * sizeof(*buffer));
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if (!buffer)
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return AVERROR(ENOMEM);
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shadows = buffer + max * 0;
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midtones = buffer + max * 1;
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highlights = buffer + max * 2;
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for (i = 0; i < max; i++) {
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const double L = 0.333 * (max - 1);
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const double M = 0.7 * (max - 1);
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const double H = 1 * (max - 1);
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double low = av_clipd((i - L) / (-max * 0.25) + 0.5, 0, 1) * M;
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double mid = av_clipd((i - L) / ( max * 0.25) + 0.5, 0, 1) *
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av_clipd((i + L - H) / (-max * 0.25) + 0.5, 0, 1) * M;
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shadows[i] = low;
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midtones[i] = mid;
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highlights[max - i - 1] = low;
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}
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for (i = 0; i < max; i++) {
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r = g = b = i;
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r = av_clip_uintp2_c(r + s->cyan_red.shadows * shadows[r], depth);
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r = av_clip_uintp2_c(r + s->cyan_red.midtones * midtones[r], depth);
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r = av_clip_uintp2_c(r + s->cyan_red.highlights * highlights[r], depth);
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g = av_clip_uintp2_c(g + s->magenta_green.shadows * shadows[g], depth);
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g = av_clip_uintp2_c(g + s->magenta_green.midtones * midtones[g], depth);
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g = av_clip_uintp2_c(g + s->magenta_green.highlights * highlights[g], depth);
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b = av_clip_uintp2_c(b + s->yellow_blue.shadows * shadows[b], depth);
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b = av_clip_uintp2_c(b + s->yellow_blue.midtones * midtones[b], depth);
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b = av_clip_uintp2_c(b + s->yellow_blue.highlights * highlights[b], depth);
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s->lut[R][i] = r;
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s->lut[G][i] = g;
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s->lut[B][i] = b;
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}
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av_free(buffer);
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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 {
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out) {
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av_frame_free(&in);
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return AVERROR(ENOMEM);
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}
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av_frame_copy_props(out, in);
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}
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td.in = in;
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td.out = out;
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ctx->internal->execute(ctx, s->apply_lut, &td, NULL, FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
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if (in != out)
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av_frame_free(&in);
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return ff_filter_frame(outlink, out);
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}
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static const AVFilterPad colorbalance_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame,
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},
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{ NULL }
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};
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static const AVFilterPad colorbalance_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = config_output,
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},
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{ NULL }
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};
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AVFilter ff_vf_colorbalance = {
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.name = "colorbalance",
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.description = NULL_IF_CONFIG_SMALL("Adjust the color balance."),
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.priv_size = sizeof(ColorBalanceContext),
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.priv_class = &colorbalance_class,
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.query_formats = query_formats,
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.inputs = colorbalance_inputs,
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.outputs = colorbalance_outputs,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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};
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