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avfilter: add colorize filter

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This commit is contained in:
Paul B Mahol 2021-02-04 15:06:35 +01:00
parent 134193a2ff
commit bd5226704a
6 changed files with 337 additions and 1 deletions
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1
Changelog
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@ -67,6 +67,7 @@ version <next>:
- binka demuxer
- XBM parser
- xbm_pipe demuxer
- colorize filter
version 4.3:

27
doc/filters.texi
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@ -8170,6 +8170,33 @@ colorchannelmixer=.393:.769:.189:0:.349:.686:.168:0:.272:.534:.131
This filter supports the all above options as @ref{commands}.
@section colorize
Overlay a solid color on the video stream.
The filter accepts the following options:
@table @option
@item hue
Set the color hue. Allowed range is from 0 to 360.
Default value is 0.
@item saturation
Set the color saturation. Allowed range is from 0 to 1.
Default value is 0.5.
@item lightness
Set the color lightness. Allowed range is from 0 to 1.
Default value is 0.5.
@item mix
Set the mix of source lightness. By default is set to 1.0.
Allowed range is from 0.0 to 1.0.
@end table
@subsection Commands
This filter supports the all above options as @ref{commands}.
@section colorkey
RGB colorspace color keying.

1
libavfilter/Makefile
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@ -198,6 +198,7 @@ OBJS-$(CONFIG_COLORBALANCE_FILTER) += vf_colorbalance.o
OBJS-$(CONFIG_COLORCHANNELMIXER_FILTER) += vf_colorchannelmixer.o
OBJS-$(CONFIG_COLORCONTRAST_FILTER) += vf_colorcontrast.o
OBJS-$(CONFIG_COLORCORRECT_FILTER) += vf_colorcorrect.o
OBJS-$(CONFIG_COLORIZE_FILTER) += vf_colorize.o
OBJS-$(CONFIG_COLORKEY_FILTER) += vf_colorkey.o
OBJS-$(CONFIG_COLORKEY_OPENCL_FILTER) += vf_colorkey_opencl.o opencl.o \
opencl/colorkey.o

1
libavfilter/allfilters.c
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@ -188,6 +188,7 @@ extern AVFilter ff_vf_colorbalance;
extern AVFilter ff_vf_colorchannelmixer;
extern AVFilter ff_vf_colorcontrast;
extern AVFilter ff_vf_colorcorrect;
extern AVFilter ff_vf_colorize;
extern AVFilter ff_vf_colorkey;
extern AVFilter ff_vf_colorkey_opencl;
extern AVFilter ff_vf_colorhold;

2
libavfilter/version.h
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@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFILTER_VERSION_MAJOR 7
#define LIBAVFILTER_VERSION_MINOR 102
#define LIBAVFILTER_VERSION_MINOR 103
#define LIBAVFILTER_VERSION_MICRO 100

306
libavfilter/vf_colorize.c Normal file
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@ -0,0 +1,306 @@
/*
* 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 "libavutil/imgutils.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
typedef struct ColorizeContext {
const AVClass *class;
float hue;
float saturation;
float lightness;
float mix;
int depth;
int c[3];
int planewidth[4];
int planeheight[4];
int (*do_plane_slice[2])(AVFilterContext *s, void *arg,
int jobnr, int nb_jobs);
} ColorizeContext;
static inline float lerpf(float v0, float v1, float f)
{
return v0 + (v1 - v0) * f;
}
static int colorizey_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorizeContext *s = ctx->priv;
AVFrame *frame = arg;
const int width = s->planewidth[0];
const int height = s->planeheight[0];
const int slice_start = (height * jobnr) / nb_jobs;
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
const int ylinesize = frame->linesize[0];
uint8_t *yptr = frame->data[0] + slice_start * ylinesize;
const int yv = s->c[0];
const float mix = s->mix;
for (int y = slice_start; y < slice_end; y++) {
for (int x = 0; x < width; x++)
yptr[x] = lerpf(yv, yptr[x], mix);
yptr += ylinesize;
}
return 0;
}
static int colorizey_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorizeContext *s = ctx->priv;
AVFrame *frame = arg;
const int width = s->planewidth[0];
const int height = s->planeheight[0];
const int slice_start = (height * jobnr) / nb_jobs;
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
const int ylinesize = frame->linesize[0] / 2;
uint16_t *yptr = (uint16_t *)frame->data[0] + slice_start * ylinesize;
const int yv = s->c[0];
const float mix = s->mix;
for (int y = slice_start; y < slice_end; y++) {
for (int x = 0; x < width; x++)
yptr[x] = lerpf(yv, yptr[x], mix);
yptr += ylinesize;
}
return 0;
}
static int colorize_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorizeContext *s = ctx->priv;
AVFrame *frame = arg;
const int width = s->planewidth[1];
const int height = s->planeheight[1];
const int slice_start = (height * jobnr) / nb_jobs;
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
const int ulinesize = frame->linesize[1];
const int vlinesize = frame->linesize[2];
uint8_t *uptr = frame->data[1] + slice_start * ulinesize;
uint8_t *vptr = frame->data[2] + slice_start * vlinesize;
const int u = s->c[1];
const int v = s->c[2];
for (int y = slice_start; y < slice_end; y++) {
for (int x = 0; x < width; x++) {
uptr[x] = u;
vptr[x] = v;
}
uptr += ulinesize;
vptr += vlinesize;
}
return 0;
}
static int colorize_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorizeContext *s = ctx->priv;
AVFrame *frame = arg;
const int width = s->planewidth[1];
const int height = s->planeheight[1];
const int slice_start = (height * jobnr) / nb_jobs;
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
const int ulinesize = frame->linesize[1] / 2;
const int vlinesize = frame->linesize[2] / 2;
uint16_t *uptr = (uint16_t *)frame->data[1] + slice_start * ulinesize;
uint16_t *vptr = (uint16_t *)frame->data[2] + slice_start * vlinesize;
const int u = s->c[1];
const int v = s->c[2];
for (int y = slice_start; y < slice_end; y++) {
for (int x = 0; x < width; x++) {
uptr[x] = u;
vptr[x] = v;
}
uptr += ulinesize;
vptr += vlinesize;
}
return 0;
}
static int do_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorizeContext *s = ctx->priv;
s->do_plane_slice[0](ctx, arg, jobnr, nb_jobs);
s->do_plane_slice[1](ctx, arg, jobnr, nb_jobs);
return 0;
}
static float hue2rgb(float p, float q, float t)
{
if (t < 0.f) t += 1.f;
if (t > 1.f) t -= 1.f;
if (t < 1.f/6.f) return p + (q - p) * 6.f * t;
if (t < 1.f/2.f) return q;
if (t < 2.f/3.f) return p + (q - p) * (2.f/3.f - t) * 6.f;
return p;
}
static void hsl2rgb(float h, float s, float l, float *r, float *g, float *b)
{
h /= 360.f;
if (s == 0.f) {
*r = *g = *b = l;
} else {
const float q = l < 0.5f ? l * (1.f + s) : l + s - l * s;
const float p = 2.f * l - q;
*r = hue2rgb(p, q, h + 1.f / 3.f);
*g = hue2rgb(p, q, h);
*b = hue2rgb(p, q, h - 1.f / 3.f);
}
}
static void rgb2yuv(float r, float g, float b, int *y, int *u, int *v, int depth)
{
*y = ((0.21260*219.0/255.0) * r + (0.71520*219.0/255.0) * g +
(0.07220*219.0/255.0) * b) * ((1 << depth) - 1);
*u = (-(0.11457*224.0/255.0) * r - (0.38543*224.0/255.0) * g +
(0.50000*224.0/255.0) * b + 0.5) * ((1 << depth) - 1);
*v = ((0.50000*224.0/255.0) * r - (0.45415*224.0/255.0) * g -
(0.04585*224.0/255.0) * b + 0.5) * ((1 << depth) - 1);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
ColorizeContext *s = ctx->priv;
float c[3];
hsl2rgb(s->hue, s->saturation, s->lightness, &c[0], &c[1], &c[2]);
rgb2yuv(c[0], c[1], c[2], &s->c[0], &s->c[1], &s->c[2], s->depth);
ctx->internal->execute(ctx, do_slice, frame, NULL,
FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx)));
return ff_filter_frame(ctx->outputs[0], frame);
}
static av_cold int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pixel_fmts[] = {
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUVJ411P,
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUV440P10,
AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
AV_PIX_FMT_YUV440P12,
AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
AV_PIX_FMT_NONE
};
AVFilterFormats *formats = NULL;
formats = ff_make_format_list(pixel_fmts);
if (!formats)
return AVERROR(ENOMEM);
return ff_set_common_formats(ctx, formats);
}
static av_cold int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
ColorizeContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
int depth;
s->depth = depth = desc->comp[0].depth;
s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
s->planewidth[0] = s->planewidth[3] = inlink->w;
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
s->planeheight[0] = s->planeheight[3] = inlink->h;
s->do_plane_slice[0] = depth <= 8 ? colorizey_slice8 : colorizey_slice16;
s->do_plane_slice[1] = depth <= 8 ? colorize_slice8 : colorize_slice16;
return 0;
}
static const AVFilterPad colorize_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.needs_writable = 1,
.filter_frame = filter_frame,
.config_props = config_input,
},
{ NULL }
};
static const AVFilterPad colorize_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
#define OFFSET(x) offsetof(ColorizeContext, x)
#define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption colorize_options[] = {
{ "hue", "set the hue", OFFSET(hue), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, 360, VF },
{ "saturation", "set the saturation", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl=0.5},0, 1, VF },
{ "lightness", "set the lightness", OFFSET(lightness), AV_OPT_TYPE_FLOAT, {.dbl=0.5},0, 1, VF },
{ "mix", "set the mix of source lightness", OFFSET(mix), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0, 1, VF },
{ NULL }
};
AVFILTER_DEFINE_CLASS(colorize);
AVFilter ff_vf_colorize = {
.name = "colorize",
.description = NULL_IF_CONFIG_SMALL("Overlay a solid color on the video stream."),
.priv_size = sizeof(ColorizeContext),
.priv_class = &colorize_class,
.query_formats = query_formats,
.inputs = colorize_inputs,
.outputs = colorize_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = ff_filter_process_command,
};