forked from KolibriOS/kolibrios
361 lines
14 KiB
C
361 lines
14 KiB
C
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/*
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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 "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 {
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const AVClass *class;
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double rr, rg, rb, ra;
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double gr, gg, gb, ga;
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double br, bg, bb, ba;
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double ar, ag, ab, aa;
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int *lut[4][4];
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int *buffer;
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uint8_t rgba_map[4];
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} ColorChannelMixerContext;
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#define OFFSET(x) offsetof(ColorChannelMixerContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption colorchannelmixer_options[] = {
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{ "rr", "set the red gain for the red channel", OFFSET(rr), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
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{ "rg", "set the green gain for the red channel", OFFSET(rg), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "rb", "set the blue gain for the red channel", OFFSET(rb), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "ra", "set the alpha gain for the red channel", OFFSET(ra), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "gr", "set the red gain for the green channel", OFFSET(gr), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "gg", "set the green gain for the green channel", OFFSET(gg), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
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{ "gb", "set the blue gain for the green channel", OFFSET(gb), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "ga", "set the alpha gain for the green channel", OFFSET(ga), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "br", "set the red gain for the blue channel", OFFSET(br), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "bg", "set the green gain for the blue channel", OFFSET(bg), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "bb", "set the blue gain for the blue channel", OFFSET(bb), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
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{ "ba", "set the alpha gain for the blue channel", OFFSET(ba), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "ar", "set the red gain for the alpha channel", OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "ag", "set the green gain for the alpha channel", OFFSET(ag), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "ab", "set the blue gain for the alpha channel", OFFSET(ab), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
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{ "aa", "set the alpha gain for the alpha channel", OFFSET(aa), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(colorchannelmixer);
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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_ARGB, AV_PIX_FMT_ABGR,
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AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
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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_NONE
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};
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ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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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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ColorChannelMixerContext *cm = ctx->priv;
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int i, j, size, *buffer;
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ff_fill_rgba_map(cm->rgba_map, outlink->format);
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switch (outlink->format) {
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case AV_PIX_FMT_RGB48:
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case AV_PIX_FMT_BGR48:
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case AV_PIX_FMT_RGBA64:
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case AV_PIX_FMT_BGRA64:
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size = 65536;
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break;
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default:
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size = 256;
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}
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cm->buffer = buffer = av_malloc(16 * size * sizeof(*cm->buffer));
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if (!cm->buffer)
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return AVERROR(ENOMEM);
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for (i = 0; i < 4; i++)
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for (j = 0; j < 4; j++, buffer += size)
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cm->lut[i][j] = buffer;
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for (i = 0; i < size; i++) {
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cm->lut[R][R][i] = round(i * cm->rr);
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cm->lut[R][G][i] = round(i * cm->rg);
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cm->lut[R][B][i] = round(i * cm->rb);
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cm->lut[R][A][i] = round(i * cm->ra);
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cm->lut[G][R][i] = round(i * cm->gr);
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cm->lut[G][G][i] = round(i * cm->gg);
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cm->lut[G][B][i] = round(i * cm->gb);
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cm->lut[G][A][i] = round(i * cm->ga);
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cm->lut[B][R][i] = round(i * cm->br);
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cm->lut[B][G][i] = round(i * cm->bg);
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cm->lut[B][B][i] = round(i * cm->bb);
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cm->lut[B][A][i] = round(i * cm->ba);
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cm->lut[A][R][i] = round(i * cm->ar);
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cm->lut[A][G][i] = round(i * cm->ag);
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cm->lut[A][B][i] = round(i * cm->ab);
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cm->lut[A][A][i] = round(i * cm->aa);
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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 *in)
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{
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AVFilterContext *ctx = inlink->dst;
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ColorChannelMixerContext *cm = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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const uint8_t roffset = cm->rgba_map[R];
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const uint8_t goffset = cm->rgba_map[G];
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const uint8_t boffset = cm->rgba_map[B];
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const uint8_t aoffset = cm->rgba_map[A];
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const uint8_t *srcrow = in->data[0];
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uint8_t *dstrow;
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AVFrame *out;
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int i, j;
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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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dstrow = out->data[0];
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switch (outlink->format) {
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case AV_PIX_FMT_BGR24:
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case AV_PIX_FMT_RGB24:
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for (i = 0; i < outlink->h; 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 * 3; j += 3) {
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const uint8_t rin = src[j + roffset];
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const uint8_t gin = src[j + goffset];
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const uint8_t bin = src[j + boffset];
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dst[j + roffset] = av_clip_uint8(cm->lut[R][R][rin] +
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cm->lut[R][G][gin] +
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cm->lut[R][B][bin]);
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dst[j + goffset] = av_clip_uint8(cm->lut[G][R][rin] +
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cm->lut[G][G][gin] +
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cm->lut[G][B][bin]);
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dst[j + boffset] = av_clip_uint8(cm->lut[B][R][rin] +
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cm->lut[B][G][gin] +
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cm->lut[B][B][bin]);
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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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break;
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case AV_PIX_FMT_0BGR:
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case AV_PIX_FMT_0RGB:
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case AV_PIX_FMT_BGR0:
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case AV_PIX_FMT_RGB0:
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for (i = 0; i < outlink->h; 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 * 4; j += 4) {
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const uint8_t rin = src[j + roffset];
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const uint8_t gin = src[j + goffset];
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const uint8_t bin = src[j + boffset];
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dst[j + roffset] = av_clip_uint8(cm->lut[R][R][rin] +
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cm->lut[R][G][gin] +
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cm->lut[R][B][bin]);
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dst[j + goffset] = av_clip_uint8(cm->lut[G][R][rin] +
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cm->lut[G][G][gin] +
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cm->lut[G][B][bin]);
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dst[j + boffset] = av_clip_uint8(cm->lut[B][R][rin] +
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cm->lut[B][G][gin] +
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cm->lut[B][B][bin]);
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if (in != out)
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dst[j + aoffset] = 0;
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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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break;
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case AV_PIX_FMT_ABGR:
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case AV_PIX_FMT_ARGB:
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case AV_PIX_FMT_BGRA:
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case AV_PIX_FMT_RGBA:
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for (i = 0; i < outlink->h; 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 * 4; j += 4) {
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const uint8_t rin = src[j + roffset];
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const uint8_t gin = src[j + goffset];
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const uint8_t bin = src[j + boffset];
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const uint8_t ain = src[j + aoffset];
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dst[j + roffset] = av_clip_uint8(cm->lut[R][R][rin] +
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cm->lut[R][G][gin] +
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cm->lut[R][B][bin] +
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cm->lut[R][A][ain]);
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dst[j + goffset] = av_clip_uint8(cm->lut[G][R][rin] +
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cm->lut[G][G][gin] +
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cm->lut[G][B][bin] +
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cm->lut[G][A][ain]);
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dst[j + boffset] = av_clip_uint8(cm->lut[B][R][rin] +
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cm->lut[B][G][gin] +
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cm->lut[B][B][bin] +
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cm->lut[B][A][ain]);
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dst[j + aoffset] = av_clip_uint8(cm->lut[A][R][rin] +
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cm->lut[A][G][gin] +
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cm->lut[A][B][bin] +
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cm->lut[A][A][ain]);
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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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break;
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case AV_PIX_FMT_BGR48:
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case AV_PIX_FMT_RGB48:
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for (i = 0; i < outlink->h; i++) {
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const uint16_t *src = (const uint16_t *)srcrow;
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uint16_t *dst = (uint16_t *)dstrow;
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for (j = 0; j < outlink->w * 3; j += 3) {
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const uint16_t rin = src[j + roffset];
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const uint16_t gin = src[j + goffset];
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const uint16_t bin = src[j + boffset];
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dst[j + roffset] = av_clip_uint16(cm->lut[R][R][rin] +
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cm->lut[R][G][gin] +
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cm->lut[R][B][bin]);
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dst[j + goffset] = av_clip_uint16(cm->lut[G][R][rin] +
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cm->lut[G][G][gin] +
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cm->lut[G][B][bin]);
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dst[j + boffset] = av_clip_uint16(cm->lut[B][R][rin] +
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cm->lut[B][G][gin] +
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cm->lut[B][B][bin]);
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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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break;
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case AV_PIX_FMT_BGRA64:
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case AV_PIX_FMT_RGBA64:
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for (i = 0; i < outlink->h; i++) {
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const uint16_t *src = (const uint16_t *)srcrow;
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uint16_t *dst = (uint16_t *)dstrow;
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for (j = 0; j < outlink->w * 4; j += 4) {
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const uint16_t rin = src[j + roffset];
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const uint16_t gin = src[j + goffset];
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const uint16_t bin = src[j + boffset];
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const uint16_t ain = src[j + aoffset];
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dst[j + roffset] = av_clip_uint16(cm->lut[R][R][rin] +
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cm->lut[R][G][gin] +
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cm->lut[R][B][bin] +
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cm->lut[R][A][ain]);
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dst[j + goffset] = av_clip_uint16(cm->lut[G][R][rin] +
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cm->lut[G][G][gin] +
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cm->lut[G][B][bin] +
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cm->lut[G][A][ain]);
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dst[j + boffset] = av_clip_uint16(cm->lut[B][R][rin] +
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cm->lut[B][G][gin] +
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cm->lut[B][B][bin] +
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cm->lut[B][A][ain]);
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dst[j + aoffset] = av_clip_uint16(cm->lut[A][R][rin] +
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cm->lut[A][G][gin] +
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cm->lut[A][B][bin] +
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cm->lut[A][A][ain]);
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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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}
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if (in != out)
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av_frame_free(&in);
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return ff_filter_frame(ctx->outputs[0], out);
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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ColorChannelMixerContext *cm = ctx->priv;
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av_freep(&cm->buffer);
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}
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static const AVFilterPad colorchannelmixer_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 colorchannelmixer_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 avfilter_vf_colorchannelmixer = {
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.name = "colorchannelmixer",
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.description = NULL_IF_CONFIG_SMALL("Adjust colors by mixing color channels."),
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.priv_size = sizeof(ColorChannelMixerContext),
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.priv_class = &colorchannelmixer_class,
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.uninit = uninit,
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.query_formats = query_formats,
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.inputs = colorchannelmixer_inputs,
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.outputs = colorchannelmixer_outputs,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
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};
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