mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
315 lines
10 KiB
C
315 lines
10 KiB
C
/*
|
|
* Copyright (c) 2021 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 <float.h>
|
|
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "avfilter.h"
|
|
#include "formats.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
typedef struct MonochromeContext {
|
|
const AVClass *class;
|
|
|
|
float b, r;
|
|
float size;
|
|
float high;
|
|
|
|
int depth;
|
|
int subw, subh;
|
|
|
|
int (*do_slice)(AVFilterContext *s, void *arg,
|
|
int jobnr, int nb_jobs);
|
|
int (*clear_uv)(AVFilterContext *s, void *arg,
|
|
int jobnr, int nb_jobs);
|
|
} MonochromeContext;
|
|
|
|
static float envelope(const float x)
|
|
{
|
|
const float beta = 0.6f;
|
|
|
|
if (x < beta) {
|
|
const float tmp = fabsf(x / beta - 1.f);
|
|
|
|
return 1.f - tmp * tmp;
|
|
} else {
|
|
const float tmp = (1.f - x) / (1.f - beta);
|
|
|
|
return tmp * tmp * (3.f - 2.f * tmp);
|
|
}
|
|
}
|
|
|
|
static float filter(float b, float r, float u, float v, float size)
|
|
{
|
|
return expf(-av_clipf(((b - u) * (b - u) +
|
|
(r - v) * (r - v)) *
|
|
size, 0.f, 1.f));
|
|
}
|
|
|
|
#define PROCESS() \
|
|
const int cx = x >> subw; \
|
|
float y = yptr[x] * imax; \
|
|
float u = uptr[cx] * imax - .5f; \
|
|
float v = vptr[cx] * imax - .5f; \
|
|
float tt, t, ny; \
|
|
\
|
|
ny = filter(b, r, u, v, size); \
|
|
tt = envelope(y); \
|
|
t = tt + (1.f - tt) * ihigh; \
|
|
ny = (1.f - t) * y + t * ny * y;
|
|
|
|
static int monochrome_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
|
|
{
|
|
MonochromeContext *s = ctx->priv;
|
|
AVFrame *frame = arg;
|
|
const int depth = s->depth;
|
|
const int subw = s->subw;
|
|
const int subh = s->subh;
|
|
const float max = (1 << depth) - 1;
|
|
const float imax = 1.f / max;
|
|
const int width = frame->width;
|
|
const int height = frame->height;
|
|
const int slice_start = (height * jobnr) / nb_jobs;
|
|
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
|
|
const int ylinesize = frame->linesize[0];
|
|
const int ulinesize = frame->linesize[1];
|
|
const int vlinesize = frame->linesize[2];
|
|
uint8_t *yptr = frame->data[0] + slice_start * ylinesize;
|
|
const float ihigh = 1.f - s->high;
|
|
const float size = 1.f / s->size;
|
|
const float b = s->b * .5f;
|
|
const float r = s->r * .5f;
|
|
|
|
for (int y = slice_start; y < slice_end; y++) {
|
|
const int cy = y >> subh;
|
|
uint8_t *uptr = frame->data[1] + cy * ulinesize;
|
|
uint8_t *vptr = frame->data[2] + cy * vlinesize;
|
|
|
|
for (int x = 0; x < width; x++) {
|
|
PROCESS()
|
|
|
|
yptr[x] = av_clip_uint8(ny * max);
|
|
}
|
|
|
|
yptr += ylinesize;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int monochrome_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
|
|
{
|
|
MonochromeContext *s = ctx->priv;
|
|
AVFrame *frame = arg;
|
|
const int depth = s->depth;
|
|
const int subw = s->subw;
|
|
const int subh = s->subh;
|
|
const float max = (1 << depth) - 1;
|
|
const float imax = 1.f / max;
|
|
const int width = frame->width;
|
|
const int height = frame->height;
|
|
const int slice_start = (height * jobnr) / nb_jobs;
|
|
const int slice_end = (height * (jobnr + 1)) / nb_jobs;
|
|
const int ylinesize = frame->linesize[0] / 2;
|
|
const int ulinesize = frame->linesize[1] / 2;
|
|
const int vlinesize = frame->linesize[2] / 2;
|
|
uint16_t *yptr = (uint16_t *)frame->data[0] + slice_start * ylinesize;
|
|
const float ihigh = 1.f - s->high;
|
|
const float size = 1.f / s->size;
|
|
const float b = s->b * .5f;
|
|
const float r = s->r * .5f;
|
|
|
|
for (int y = slice_start; y < slice_end; y++) {
|
|
const int cy = y >> subh;
|
|
uint16_t *uptr = (uint16_t *)frame->data[1] + cy * ulinesize;
|
|
uint16_t *vptr = (uint16_t *)frame->data[2] + cy * vlinesize;
|
|
|
|
for (int x = 0; x < width; x++) {
|
|
PROCESS()
|
|
|
|
yptr[x] = av_clip_uintp2_c(ny * max, depth);
|
|
}
|
|
|
|
yptr += ylinesize;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int clear_slice8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
|
|
{
|
|
MonochromeContext *s = ctx->priv;
|
|
AVFrame *frame = arg;
|
|
const int depth = s->depth;
|
|
const int half = 1 << (depth - 1);
|
|
const int subw = s->subw;
|
|
const int subh = s->subh;
|
|
const int width = AV_CEIL_RSHIFT(frame->width, subw);
|
|
const int height = AV_CEIL_RSHIFT(frame->height, subh);
|
|
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];
|
|
|
|
for (int y = slice_start; y < slice_end; y++) {
|
|
uint8_t *uptr = frame->data[1] + y * ulinesize;
|
|
uint8_t *vptr = frame->data[2] + y * vlinesize;
|
|
|
|
memset(uptr, half, width);
|
|
memset(vptr, half, width);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int clear_slice16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
|
|
{
|
|
MonochromeContext *s = ctx->priv;
|
|
AVFrame *frame = arg;
|
|
const int depth = s->depth;
|
|
const int half = 1 << (depth - 1);
|
|
const int subw = s->subw;
|
|
const int subh = s->subh;
|
|
const int width = AV_CEIL_RSHIFT(frame->width, subw);
|
|
const int height = AV_CEIL_RSHIFT(frame->height, subh);
|
|
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;
|
|
|
|
for (int y = slice_start; y < slice_end; y++) {
|
|
uint16_t *uptr = (uint16_t *)frame->data[1] + y * ulinesize;
|
|
uint16_t *vptr = (uint16_t *)frame->data[2] + y * vlinesize;
|
|
|
|
for (int x = 0; x < width; x++) {
|
|
uptr[x] = half;
|
|
vptr[x] = half;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
MonochromeContext *s = ctx->priv;
|
|
|
|
ctx->internal->execute(ctx, s->do_slice, frame, NULL,
|
|
FFMIN(frame->height, ff_filter_get_nb_threads(ctx)));
|
|
ctx->internal->execute(ctx, s->clear_uv, frame, NULL,
|
|
FFMIN(frame->height >> s->subh, 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;
|
|
MonochromeContext *s = ctx->priv;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
|
|
s->depth = desc->comp[0].depth;
|
|
s->do_slice = s->depth <= 8 ? monochrome_slice8 : monochrome_slice16;
|
|
s->clear_uv = s->depth <= 8 ? clear_slice8 : clear_slice16;
|
|
s->subw = desc->log2_chroma_w;
|
|
s->subh = desc->log2_chroma_h;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const AVFilterPad monochrome_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.needs_writable = 1,
|
|
.filter_frame = filter_frame,
|
|
.config_props = config_input,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad monochrome_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
#define OFFSET(x) offsetof(MonochromeContext, x)
|
|
#define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
|
|
|
|
static const AVOption monochrome_options[] = {
|
|
{ "cb", "set the chroma blue spot", OFFSET(b), AV_OPT_TYPE_FLOAT, {.dbl=0},-1, 1, VF },
|
|
{ "cr", "set the chroma red spot", OFFSET(r), AV_OPT_TYPE_FLOAT, {.dbl=0},-1, 1, VF },
|
|
{ "size", "set the color filter size", OFFSET(size), AV_OPT_TYPE_FLOAT, {.dbl=1},.1,10, VF },
|
|
{ "high", "set the highlights strength", OFFSET(high), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, 1, VF },
|
|
{ NULL }
|
|
};
|
|
|
|
AVFILTER_DEFINE_CLASS(monochrome);
|
|
|
|
AVFilter ff_vf_monochrome = {
|
|
.name = "monochrome",
|
|
.description = NULL_IF_CONFIG_SMALL("Convert video to gray using custom color filter."),
|
|
.priv_size = sizeof(MonochromeContext),
|
|
.priv_class = &monochrome_class,
|
|
.query_formats = query_formats,
|
|
.inputs = monochrome_inputs,
|
|
.outputs = monochrome_outputs,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
|
|
.process_command = ff_filter_process_command,
|
|
};
|