[deb_ffmpeg.git] / ffmpeg / libavfilter / vf_colorchannelmixer.c

/*
 * Copyright (c) 2013 Paul B Mahol
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/opt.h"
#include "avfilter.h"
#include "drawutils.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

#define R 0
#define G 1
#define B 2
#define A 3

typedef struct {
    const AVClass *class;
    double rr, rg, rb, ra;
    double gr, gg, gb, ga;
    double br, bg, bb, ba;
    double ar, ag, ab, aa;

    int *lut[4][4];

    int *buffer;

    uint8_t rgba_map[4];
} ColorChannelMixerContext;

#define OFFSET(x) offsetof(ColorChannelMixerContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption colorchannelmixer_options[] = {
    { "rr", "set the red gain for the red channel",     OFFSET(rr), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
    { "rg", "set the green gain for the red channel",   OFFSET(rg), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "rb", "set the blue gain for the red channel",    OFFSET(rb), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "ra", "set the alpha gain for the red channel",   OFFSET(ra), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "gr", "set the red gain for the green channel",   OFFSET(gr), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "gg", "set the green gain for the green channel", OFFSET(gg), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
    { "gb", "set the blue gain for the green channel",  OFFSET(gb), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "ga", "set the alpha gain for the green channel", OFFSET(ga), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "br", "set the red gain for the blue channel",    OFFSET(br), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "bg", "set the green gain for the blue channel",  OFFSET(bg), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "bb", "set the blue gain for the blue channel",   OFFSET(bb), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
    { "ba", "set the alpha gain for the blue channel",  OFFSET(ba), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "ar", "set the red gain for the alpha channel",   OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "ag", "set the green gain for the alpha channel", OFFSET(ag), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "ab", "set the blue gain for the alpha channel",  OFFSET(ab), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
    { "aa", "set the alpha gain for the alpha channel", OFFSET(aa), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
    { NULL }
};

AVFILTER_DEFINE_CLASS(colorchannelmixer);

static int query_formats(AVFilterContext *ctx)
{
    static const enum AVPixelFormat pix_fmts[] = {
        AV_PIX_FMT_RGB24,  AV_PIX_FMT_BGR24,
        AV_PIX_FMT_RGBA,   AV_PIX_FMT_BGRA,
        AV_PIX_FMT_ARGB,   AV_PIX_FMT_ABGR,
        AV_PIX_FMT_0RGB,   AV_PIX_FMT_0BGR,
        AV_PIX_FMT_RGB0,   AV_PIX_FMT_BGR0,
        AV_PIX_FMT_RGB48,  AV_PIX_FMT_BGR48,
        AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
        AV_PIX_FMT_NONE
    };

    ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
    return 0;
}

static int config_output(AVFilterLink *outlink)
{
    AVFilterContext *ctx = outlink->src;
    ColorChannelMixerContext *cm = ctx->priv;
    int i, j, size, *buffer;

    ff_fill_rgba_map(cm->rgba_map, outlink->format);

    switch (outlink->format) {
    case AV_PIX_FMT_RGB48:
    case AV_PIX_FMT_BGR48:
    case AV_PIX_FMT_RGBA64:
    case AV_PIX_FMT_BGRA64:
        size = 65536;
        break;
    default:
        size = 256;
    }

    cm->buffer = buffer = av_malloc(16 * size * sizeof(*cm->buffer));
    if (!cm->buffer)
        return AVERROR(ENOMEM);

    for (i = 0; i < 4; i++)
        for (j = 0; j < 4; j++, buffer += size)
            cm->lut[i][j] = buffer;

    for (i = 0; i < size; i++) {
        cm->lut[R][R][i] = round(i * cm->rr);
        cm->lut[R][G][i] = round(i * cm->rg);
        cm->lut[R][B][i] = round(i * cm->rb);
        cm->lut[R][A][i] = round(i * cm->ra);

        cm->lut[G][R][i] = round(i * cm->gr);
        cm->lut[G][G][i] = round(i * cm->gg);
        cm->lut[G][B][i] = round(i * cm->gb);
        cm->lut[G][A][i] = round(i * cm->ga);

        cm->lut[B][R][i] = round(i * cm->br);
        cm->lut[B][G][i] = round(i * cm->bg);
        cm->lut[B][B][i] = round(i * cm->bb);
        cm->lut[B][A][i] = round(i * cm->ba);

        cm->lut[A][R][i] = round(i * cm->ar);
        cm->lut[A][G][i] = round(i * cm->ag);
        cm->lut[A][B][i] = round(i * cm->ab);
        cm->lut[A][A][i] = round(i * cm->aa);
    }

    return 0;
}

static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
    AVFilterContext *ctx = inlink->dst;
    ColorChannelMixerContext *cm = ctx->priv;
    AVFilterLink *outlink = ctx->outputs[0];
    const uint8_t roffset = cm->rgba_map[R];
    const uint8_t goffset = cm->rgba_map[G];
    const uint8_t boffset = cm->rgba_map[B];
    const uint8_t aoffset = cm->rgba_map[A];
    const uint8_t *srcrow = in->data[0];
    uint8_t *dstrow;
    AVFrame *out;
    int i, j;

    if (av_frame_is_writable(in)) {
        out = in;
    } else {
        out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
        if (!out) {
            av_frame_free(&in);
            return AVERROR(ENOMEM);
        }
        av_frame_copy_props(out, in);
    }

    dstrow = out->data[0];
    switch (outlink->format) {
    case AV_PIX_FMT_BGR24:
    case AV_PIX_FMT_RGB24:
        for (i = 0; i < outlink->h; i++) {
            const uint8_t *src = srcrow;
            uint8_t *dst = dstrow;

            for (j = 0; j < outlink->w * 3; j += 3) {
                const uint8_t rin = src[j + roffset];
                const uint8_t gin = src[j + goffset];
                const uint8_t bin = src[j + boffset];

                dst[j + roffset] = av_clip_uint8(cm->lut[R][R][rin] +
                                                 cm->lut[R][G][gin] +
                                                 cm->lut[R][B][bin]);
                dst[j + goffset] = av_clip_uint8(cm->lut[G][R][rin] +
                                                 cm->lut[G][G][gin] +
                                                 cm->lut[G][B][bin]);
                dst[j + boffset] = av_clip_uint8(cm->lut[B][R][rin] +
                                                 cm->lut[B][G][gin] +
                                                 cm->lut[B][B][bin]);
            }

            srcrow += in->linesize[0];
            dstrow += out->linesize[0];
        }
        break;
    case AV_PIX_FMT_0BGR:
    case AV_PIX_FMT_0RGB:
    case AV_PIX_FMT_BGR0:
    case AV_PIX_FMT_RGB0:
        for (i = 0; i < outlink->h; i++) {
            const uint8_t *src = srcrow;
            uint8_t *dst = dstrow;

            for (j = 0; j < outlink->w * 4; j += 4) {
                const uint8_t rin = src[j + roffset];
                const uint8_t gin = src[j + goffset];
                const uint8_t bin = src[j + boffset];

                dst[j + roffset] = av_clip_uint8(cm->lut[R][R][rin] +
                                                 cm->lut[R][G][gin] +
                                                 cm->lut[R][B][bin]);
                dst[j + goffset] = av_clip_uint8(cm->lut[G][R][rin] +
                                                 cm->lut[G][G][gin] +
                                                 cm->lut[G][B][bin]);
                dst[j + boffset] = av_clip_uint8(cm->lut[B][R][rin] +
                                                 cm->lut[B][G][gin] +
                                                 cm->lut[B][B][bin]);
                if (in != out)
                    dst[j + aoffset] = 0;
            }

            srcrow += in->linesize[0];
            dstrow += out->linesize[0];
        }
        break;
    case AV_PIX_FMT_ABGR:
    case AV_PIX_FMT_ARGB:
    case AV_PIX_FMT_BGRA:
    case AV_PIX_FMT_RGBA:
        for (i = 0; i < outlink->h; i++) {
            const uint8_t *src = srcrow;
            uint8_t *dst = dstrow;

            for (j = 0; j < outlink->w * 4; j += 4) {
                const uint8_t rin = src[j + roffset];
                const uint8_t gin = src[j + goffset];
                const uint8_t bin = src[j + boffset];
                const uint8_t ain = src[j + aoffset];

                dst[j + roffset] = av_clip_uint8(cm->lut[R][R][rin] +
                                                 cm->lut[R][G][gin] +
                                                 cm->lut[R][B][bin] +
                                                 cm->lut[R][A][ain]);
                dst[j + goffset] = av_clip_uint8(cm->lut[G][R][rin] +
                                                 cm->lut[G][G][gin] +
                                                 cm->lut[G][B][bin] +
                                                 cm->lut[G][A][ain]);
                dst[j + boffset] = av_clip_uint8(cm->lut[B][R][rin] +
                                                 cm->lut[B][G][gin] +
                                                 cm->lut[B][B][bin] +
                                                 cm->lut[B][A][ain]);
                dst[j + aoffset] = av_clip_uint8(cm->lut[A][R][rin] +
                                                 cm->lut[A][G][gin] +
                                                 cm->lut[A][B][bin] +
                                                 cm->lut[A][A][ain]);
            }

            srcrow += in->linesize[0];
            dstrow += out->linesize[0];
        }
        break;
    case AV_PIX_FMT_BGR48:
    case AV_PIX_FMT_RGB48:
        for (i = 0; i < outlink->h; i++) {
            const uint16_t *src = (const uint16_t *)srcrow;
            uint16_t *dst = (uint16_t *)dstrow;

            for (j = 0; j < outlink->w * 3; j += 3) {
                const uint16_t rin = src[j + roffset];
                const uint16_t gin = src[j + goffset];
                const uint16_t bin = src[j + boffset];

                dst[j + roffset] = av_clip_uint16(cm->lut[R][R][rin] +
                                                  cm->lut[R][G][gin] +
                                                  cm->lut[R][B][bin]);
                dst[j + goffset] = av_clip_uint16(cm->lut[G][R][rin] +
                                                  cm->lut[G][G][gin] +
                                                  cm->lut[G][B][bin]);
                dst[j + boffset] = av_clip_uint16(cm->lut[B][R][rin] +
                                                  cm->lut[B][G][gin] +
                                                  cm->lut[B][B][bin]);
            }

            srcrow += in->linesize[0];
            dstrow += out->linesize[0];
        }
        break;
    case AV_PIX_FMT_BGRA64:
    case AV_PIX_FMT_RGBA64:
        for (i = 0; i < outlink->h; i++) {
            const uint16_t *src = (const uint16_t *)srcrow;
            uint16_t *dst = (uint16_t *)dstrow;

            for (j = 0; j < outlink->w * 4; j += 4) {
                const uint16_t rin = src[j + roffset];
                const uint16_t gin = src[j + goffset];
                const uint16_t bin = src[j + boffset];
                const uint16_t ain = src[j + aoffset];

                dst[j + roffset] = av_clip_uint16(cm->lut[R][R][rin] +
                                                  cm->lut[R][G][gin] +
                                                  cm->lut[R][B][bin] +
                                                  cm->lut[R][A][ain]);
                dst[j + goffset] = av_clip_uint16(cm->lut[G][R][rin] +
                                                  cm->lut[G][G][gin] +
                                                  cm->lut[G][B][bin] +
                                                  cm->lut[G][A][ain]);
                dst[j + boffset] = av_clip_uint16(cm->lut[B][R][rin] +
                                                  cm->lut[B][G][gin] +
                                                  cm->lut[B][B][bin] +
                                                  cm->lut[B][A][ain]);
                dst[j + aoffset] = av_clip_uint16(cm->lut[A][R][rin] +
                                                  cm->lut[A][G][gin] +
                                                  cm->lut[A][B][bin] +
                                                  cm->lut[A][A][ain]);
            }

            srcrow += in->linesize[0];
            dstrow += out->linesize[0];
        }
    }

    if (in != out)
        av_frame_free(&in);
    return ff_filter_frame(ctx->outputs[0], out);
}

static av_cold void uninit(AVFilterContext *ctx)
{
    ColorChannelMixerContext *cm = ctx->priv;

    av_freep(&cm->buffer);
}

static const AVFilterPad colorchannelmixer_inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
    },
    { NULL }
};

static const AVFilterPad colorchannelmixer_outputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_output,
    },
    { NULL }
};

AVFilter ff_vf_colorchannelmixer = {
    .name          = "colorchannelmixer",
    .description   = NULL_IF_CONFIG_SMALL("Adjust colors by mixing color channels."),
    .priv_size     = sizeof(ColorChannelMixerContext),
    .priv_class    = &colorchannelmixer_class,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = colorchannelmixer_inputs,
    .outputs       = colorchannelmixer_outputs,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (c) 2013 Paul B Mahol
	3	*
	4	* This file is part of FFmpeg.
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include "libavutil/opt.h"
	22	#include "avfilter.h"
	23	#include "drawutils.h"
	24	#include "formats.h"
	25	#include "internal.h"
	26	#include "video.h"
	27
	28	#define R 0
	29	#define G 1
	30	#define B 2
	31	#define A 3
	32
	33	typedef struct {
	34	const AVClass *class;
	35	double rr, rg, rb, ra;
	36	double gr, gg, gb, ga;
	37	double br, bg, bb, ba;
	38	double ar, ag, ab, aa;
	39
	40	int *lut[4][4];
	41
	42	int *buffer;
	43
	44	uint8_t rgba_map[4];
	45	} ColorChannelMixerContext;
	46
	47	#define OFFSET(x) offsetof(ColorChannelMixerContext, x)
	48	#define FLAGS AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM
	49	static const AVOption colorchannelmixer_options[] = {
	50	{ "rr", "set the red gain for the red channel", OFFSET(rr), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
	51	{ "rg", "set the green gain for the red channel", OFFSET(rg), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	52	{ "rb", "set the blue gain for the red channel", OFFSET(rb), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	53	{ "ra", "set the alpha gain for the red channel", OFFSET(ra), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	54	{ "gr", "set the red gain for the green channel", OFFSET(gr), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	55	{ "gg", "set the green gain for the green channel", OFFSET(gg), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
	56	{ "gb", "set the blue gain for the green channel", OFFSET(gb), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	57	{ "ga", "set the alpha gain for the green channel", OFFSET(ga), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	58	{ "br", "set the red gain for the blue channel", OFFSET(br), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	59	{ "bg", "set the green gain for the blue channel", OFFSET(bg), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	60	{ "bb", "set the blue gain for the blue channel", OFFSET(bb), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
	61	{ "ba", "set the alpha gain for the blue channel", OFFSET(ba), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	62	{ "ar", "set the red gain for the alpha channel", OFFSET(ar), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	63	{ "ag", "set the green gain for the alpha channel", OFFSET(ag), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
	64	{ "ab", "set the blue gain for the alpha channel", OFFSET(ab), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -2, 2, FLAGS },
65	{ "aa", "set the alpha gain for the alpha channel", OFFSET(aa), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -2, 2, FLAGS },
66	{ NULL }
67	};
68
69	AVFILTER_DEFINE_CLASS(colorchannelmixer);
70
71	static int query_formats(AVFilterContext *ctx)
72	{
73	static const enum AVPixelFormat pix_fmts[] = {
74	AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
75	AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
76	AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
77	AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
78	AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
79	AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48,
80	AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
81	AV_PIX_FMT_NONE
82	};
83
84	ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
85	return 0;
86	}
87
88	static int config_output(AVFilterLink *outlink)
89	{
90	AVFilterContext *ctx = outlink->src;
91	ColorChannelMixerContext *cm = ctx->priv;
92	int i, j, size, *buffer;
93
94	ff_fill_rgba_map(cm->rgba_map, outlink->format);
95
96	switch (outlink->format) {
97	case AV_PIX_FMT_RGB48:
98	case AV_PIX_FMT_BGR48:
99	case AV_PIX_FMT_RGBA64:
100	case AV_PIX_FMT_BGRA64:
101	size = 65536;
102	break;
103	default:
104	size = 256;
105	}
106
107	cm->buffer = buffer = av_malloc(16 * size * sizeof(*cm->buffer));
108	if (!cm->buffer)
109	return AVERROR(ENOMEM);
110
111	for (i = 0; i < 4; i++)
112	for (j = 0; j < 4; j++, buffer += size)
113	cm->lut[i][j] = buffer;
114
115	for (i = 0; i < size; i++) {
116	cm->lut[R][R][i] = round(i * cm->rr);
117	cm->lut[R][G][i] = round(i * cm->rg);
118	cm->lut[R][B][i] = round(i * cm->rb);
119	cm->lut[R][A][i] = round(i * cm->ra);
120
121	cm->lut[G][R][i] = round(i * cm->gr);
122	cm->lut[G][G][i] = round(i * cm->gg);
123	cm->lut[G][B][i] = round(i * cm->gb);
124	cm->lut[G][A][i] = round(i * cm->ga);
125
126	cm->lut[B][R][i] = round(i * cm->br);
127	cm->lut[B][G][i] = round(i * cm->bg);
128	cm->lut[B][B][i] = round(i * cm->bb);
129	cm->lut[B][A][i] = round(i * cm->ba);
130
131	cm->lut[A][R][i] = round(i * cm->ar);
132	cm->lut[A][G][i] = round(i * cm->ag);
133	cm->lut[A][B][i] = round(i * cm->ab);
134	cm->lut[A][A][i] = round(i * cm->aa);
135	}
136
137	return 0;
138	}
139
140	static int filter_frame(AVFilterLink inlink, AVFrame in)
141	{
142	AVFilterContext *ctx = inlink->dst;
143	ColorChannelMixerContext *cm = ctx->priv;
144	AVFilterLink *outlink = ctx->outputs[0];
145	const uint8_t roffset = cm->rgba_map[R];
146	const uint8_t goffset = cm->rgba_map[G];
147	const uint8_t boffset = cm->rgba_map[B];
148	const uint8_t aoffset = cm->rgba_map[A];
149	const uint8_t *srcrow = in->data[0];
150	uint8_t *dstrow;
151	AVFrame *out;
152	int i, j;
153
154	if (av_frame_is_writable(in)) {
155	out = in;
156	} else {
157	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
158	if (!out) {
159	av_frame_free(&in);
160	return AVERROR(ENOMEM);
161	}
162	av_frame_copy_props(out, in);
163	}
164
165	dstrow = out->data[0];
166	switch (outlink->format) {
167	case AV_PIX_FMT_BGR24:
168	case AV_PIX_FMT_RGB24:
169	for (i = 0; i < outlink->h; i++) {
170	const uint8_t *src = srcrow;
171	uint8_t *dst = dstrow;
172
173	for (j = 0; j < outlink->w * 3; j += 3) {
174	const uint8_t rin = src[j + roffset];
175	const uint8_t gin = src[j + goffset];
176	const uint8_t bin = src[j + boffset];
177
178	dst[j + roffset] = av_clip_uint8(cm->lut[R][R][rin] +
179	cm->lut[R][G][gin] +
180	cm->lut[R][B][bin]);
181	dst[j + goffset] = av_clip_uint8(cm->lut[G][R][rin] +
182	cm->lut[G][G][gin] +
183	cm->lut[G][B][bin]);
184	dst[j + boffset] = av_clip_uint8(cm->lut[B][R][rin] +
185	cm->lut[B][G][gin] +
186	cm->lut[B][B][bin]);
187	}
188
189	srcrow += in->linesize[0];
190	dstrow += out->linesize[0];
191	}
192	break;
193	case AV_PIX_FMT_0BGR:
194	case AV_PIX_FMT_0RGB:
195	case AV_PIX_FMT_BGR0:
196	case AV_PIX_FMT_RGB0:
197	for (i = 0; i < outlink->h; i++) {
198	const uint8_t *src = srcrow;
199	uint8_t *dst = dstrow;
200
201	for (j = 0; j < outlink->w * 4; j += 4) {
202	const uint8_t rin = src[j + roffset];
203	const uint8_t gin = src[j + goffset];
204	const uint8_t bin = src[j + boffset];
205
206	dst[j + roffset] = av_clip_uint8(cm->lut[R][R][rin] +
207	cm->lut[R][G][gin] +
208	cm->lut[R][B][bin]);
209	dst[j + goffset] = av_clip_uint8(cm->lut[G][R][rin] +
210	cm->lut[G][G][gin] +
211	cm->lut[G][B][bin]);
212	dst[j + boffset] = av_clip_uint8(cm->lut[B][R][rin] +
213	cm->lut[B][G][gin] +
214	cm->lut[B][B][bin]);
215	if (in != out)
216	dst[j + aoffset] = 0;
217	}
218
219	srcrow += in->linesize[0];
220	dstrow += out->linesize[0];
221	}
222	break;
223	case AV_PIX_FMT_ABGR:
224	case AV_PIX_FMT_ARGB:
225	case AV_PIX_FMT_BGRA:
226	case AV_PIX_FMT_RGBA:
227	for (i = 0; i < outlink->h; i++) {
228	const uint8_t *src = srcrow;
229	uint8_t *dst = dstrow;
230
231	for (j = 0; j < outlink->w * 4; j += 4) {
232	const uint8_t rin = src[j + roffset];
233	const uint8_t gin = src[j + goffset];
234	const uint8_t bin = src[j + boffset];
235	const uint8_t ain = src[j + aoffset];
236
237	dst[j + roffset] = av_clip_uint8(cm->lut[R][R][rin] +
238	cm->lut[R][G][gin] +
239	cm->lut[R][B][bin] +
240	cm->lut[R][A][ain]);
241	dst[j + goffset] = av_clip_uint8(cm->lut[G][R][rin] +
242	cm->lut[G][G][gin] +
243	cm->lut[G][B][bin] +
244	cm->lut[G][A][ain]);
245	dst[j + boffset] = av_clip_uint8(cm->lut[B][R][rin] +
246	cm->lut[B][G][gin] +
247	cm->lut[B][B][bin] +
248	cm->lut[B][A][ain]);
249	dst[j + aoffset] = av_clip_uint8(cm->lut[A][R][rin] +
250	cm->lut[A][G][gin] +
251	cm->lut[A][B][bin] +
252	cm->lut[A][A][ain]);
253	}
254
255	srcrow += in->linesize[0];
256	dstrow += out->linesize[0];
257	}
258	break;
259	case AV_PIX_FMT_BGR48:
260	case AV_PIX_FMT_RGB48:
261	for (i = 0; i < outlink->h; i++) {
262	const uint16_t src = (const uint16_t )srcrow;
263	uint16_t dst = (uint16_t )dstrow;
264
265	for (j = 0; j < outlink->w * 3; j += 3) {
266	const uint16_t rin = src[j + roffset];
267	const uint16_t gin = src[j + goffset];
268	const uint16_t bin = src[j + boffset];
269
270	dst[j + roffset] = av_clip_uint16(cm->lut[R][R][rin] +
271	cm->lut[R][G][gin] +
272	cm->lut[R][B][bin]);
273	dst[j + goffset] = av_clip_uint16(cm->lut[G][R][rin] +
274	cm->lut[G][G][gin] +
275	cm->lut[G][B][bin]);
276	dst[j + boffset] = av_clip_uint16(cm->lut[B][R][rin] +
277	cm->lut[B][G][gin] +
278	cm->lut[B][B][bin]);
279	}
280
281	srcrow += in->linesize[0];
282	dstrow += out->linesize[0];
283	}
284	break;
285	case AV_PIX_FMT_BGRA64:
286	case AV_PIX_FMT_RGBA64:
287	for (i = 0; i < outlink->h; i++) {
288	const uint16_t src = (const uint16_t )srcrow;
289	uint16_t dst = (uint16_t )dstrow;
290
291	for (j = 0; j < outlink->w * 4; j += 4) {
292	const uint16_t rin = src[j + roffset];
293	const uint16_t gin = src[j + goffset];
294	const uint16_t bin = src[j + boffset];
295	const uint16_t ain = src[j + aoffset];
296
297	dst[j + roffset] = av_clip_uint16(cm->lut[R][R][rin] +
298	cm->lut[R][G][gin] +
299	cm->lut[R][B][bin] +
300	cm->lut[R][A][ain]);
301	dst[j + goffset] = av_clip_uint16(cm->lut[G][R][rin] +
302	cm->lut[G][G][gin] +
303	cm->lut[G][B][bin] +
304	cm->lut[G][A][ain]);
305	dst[j + boffset] = av_clip_uint16(cm->lut[B][R][rin] +
306	cm->lut[B][G][gin] +
307	cm->lut[B][B][bin] +
308	cm->lut[B][A][ain]);
309	dst[j + aoffset] = av_clip_uint16(cm->lut[A][R][rin] +
310	cm->lut[A][G][gin] +
311	cm->lut[A][B][bin] +
312	cm->lut[A][A][ain]);
313	}
314
315	srcrow += in->linesize[0];
316	dstrow += out->linesize[0];
317	}
318	}
319
320	if (in != out)
321	av_frame_free(&in);
322	return ff_filter_frame(ctx->outputs[0], out);
323	}
324
325	static av_cold void uninit(AVFilterContext *ctx)
326	{
327	ColorChannelMixerContext *cm = ctx->priv;
328
329	av_freep(&cm->buffer);
330	}
331
332	static const AVFilterPad colorchannelmixer_inputs[] = {
333	{
334	.name = "default",
335	.type = AVMEDIA_TYPE_VIDEO,
336	.filter_frame = filter_frame,
337	},
338	{ NULL }
339	};
340
341	static const AVFilterPad colorchannelmixer_outputs[] = {
342	{
343	.name = "default",
344	.type = AVMEDIA_TYPE_VIDEO,
345	.config_props = config_output,
346	},
347	{ NULL }
348	};
349
350	AVFilter ff_vf_colorchannelmixer = {
351	.name = "colorchannelmixer",
352	.description = NULL_IF_CONFIG_SMALL("Adjust colors by mixing color channels."),
353	.priv_size = sizeof(ColorChannelMixerContext),
354	.priv_class = &colorchannelmixer_class,
355	.uninit = uninit,
356	.query_formats = query_formats,
357	.inputs = colorchannelmixer_inputs,
358	.outputs = colorchannelmixer_outputs,
359	.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
360	};