0,0 → 1,360 |
/* |
* 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 avfilter_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, |
}; |