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ffmpeg/libavfilter/vf_colorlevels.c

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/*
* 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 "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "internal.h"
#include "video.h"
#include "preserve_color.h"
#define R 0
#define G 1
#define B 2
#define A 3
typedef struct Range {
double in_min, in_max;
double out_min, out_max;
} Range;
typedef struct ColorLevelsContext {
const AVClass *class;
Range range[4];
int preserve_color;
int nb_comp;
int depth;
int max;
int planar;
int bpp;
int step;
uint8_t rgba_map[4];
int linesize;
int (*colorlevels_slice[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} ColorLevelsContext;
#define OFFSET(x) offsetof(ColorLevelsContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption colorlevels_options[] = {
{ "rimin", "set input red black point", OFFSET(range[R].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
{ "gimin", "set input green black point", OFFSET(range[G].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
{ "bimin", "set input blue black point", OFFSET(range[B].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
{ "aimin", "set input alpha black point", OFFSET(range[A].in_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -1, 1, FLAGS },
{ "rimax", "set input red white point", OFFSET(range[R].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
{ "gimax", "set input green white point", OFFSET(range[G].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
{ "bimax", "set input blue white point", OFFSET(range[B].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
{ "aimax", "set input alpha white point", OFFSET(range[A].in_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, -1, 1, FLAGS },
{ "romin", "set output red black point", OFFSET(range[R].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
{ "gomin", "set output green black point", OFFSET(range[G].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
{ "bomin", "set output blue black point", OFFSET(range[B].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
{ "aomin", "set output alpha black point", OFFSET(range[A].out_min), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 1, FLAGS },
{ "romax", "set output red white point", OFFSET(range[R].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ "gomax", "set output green white point", OFFSET(range[G].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ "bomax", "set output blue white point", OFFSET(range[B].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ "aomax", "set output alpha white point", OFFSET(range[A].out_max), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ "preserve", "set preserve color mode", OFFSET(preserve_color), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_PRESERVE-1, FLAGS, .unit = "preserve" },
{ "none", "disabled", 0, AV_OPT_TYPE_CONST, {.i64=P_NONE}, 0, 0, FLAGS, .unit = "preserve" },
{ "lum", "luminance", 0, AV_OPT_TYPE_CONST, {.i64=P_LUM}, 0, 0, FLAGS, .unit = "preserve" },
{ "max", "max", 0, AV_OPT_TYPE_CONST, {.i64=P_MAX}, 0, 0, FLAGS, .unit = "preserve" },
{ "avg", "average", 0, AV_OPT_TYPE_CONST, {.i64=P_AVG}, 0, 0, FLAGS, .unit = "preserve" },
{ "sum", "sum", 0, AV_OPT_TYPE_CONST, {.i64=P_SUM}, 0, 0, FLAGS, .unit = "preserve" },
{ "nrm", "norm", 0, AV_OPT_TYPE_CONST, {.i64=P_NRM}, 0, 0, FLAGS, .unit = "preserve" },
{ "pwr", "power", 0, AV_OPT_TYPE_CONST, {.i64=P_PWR}, 0, 0, FLAGS, .unit = "preserve" },
{ NULL }
};
AVFILTER_DEFINE_CLASS(colorlevels);
typedef struct ThreadData {
const uint8_t *srcrow[4];
uint8_t *dstrow[4];
int dst_linesize;
int src_linesize;
float coeff[4];
int h;
float fimin[4];
float fomin[4];
int imin[4];
int omin[4];
} ThreadData;
#define DO_COMMON(type, ptype, clip, preserve, planar) \
const ThreadData *td = arg; \
const int linesize = s->linesize; \
const int step = s->step; \
const int process_h = td->h; \
const int slice_start = (process_h * jobnr ) / nb_jobs; \
const int slice_end = (process_h * (jobnr+1)) / nb_jobs; \
const int src_linesize = td->src_linesize / sizeof(type); \
const int dst_linesize = td->dst_linesize / sizeof(type); \
const type *src_r = (const type *)(td->srcrow[R]) + src_linesize * slice_start; \
const type *src_g = (const type *)(td->srcrow[G]) + src_linesize * slice_start; \
const type *src_b = (const type *)(td->srcrow[B]) + src_linesize * slice_start; \
const type *src_a = (const type *)(td->srcrow[A]) + src_linesize * slice_start; \
type *dst_r = (type *)(td->dstrow[R]) + src_linesize * slice_start; \
type *dst_g = (type *)(td->dstrow[G]) + src_linesize * slice_start; \
type *dst_b = (type *)(td->dstrow[B]) + src_linesize * slice_start; \
type *dst_a = (type *)(td->dstrow[A]) + src_linesize * slice_start; \
const ptype imin_r = s->depth == 32 ? td->fimin[R] : td->imin[R]; \
const ptype imin_g = s->depth == 32 ? td->fimin[G] : td->imin[G]; \
const ptype imin_b = s->depth == 32 ? td->fimin[B] : td->imin[B]; \
const ptype imin_a = s->depth == 32 ? td->fimin[A] : td->imin[A]; \
const ptype omin_r = s->depth == 32 ? td->fomin[R] : td->omin[R]; \
const ptype omin_g = s->depth == 32 ? td->fomin[G] : td->omin[G]; \
const ptype omin_b = s->depth == 32 ? td->fomin[B] : td->omin[B]; \
const ptype omin_a = s->depth == 32 ? td->fomin[A] : td->omin[A]; \
const float coeff_r = td->coeff[R]; \
const float coeff_g = td->coeff[G]; \
const float coeff_b = td->coeff[B]; \
const float coeff_a = td->coeff[A]; \
\
for (int y = slice_start; y < slice_end; y++) { \
for (int x = 0; x < linesize; x += step) { \
ptype ir, ig, ib, or, og, ob; \
ir = src_r[x]; \
ig = src_g[x]; \
ib = src_b[x]; \
if (preserve) { \
float ratio, icolor, ocolor, max = s->depth==32 ? 1.f : s->max; \
\
or = (ir - imin_r) * coeff_r + omin_r; \
og = (ig - imin_g) * coeff_g + omin_g; \
ob = (ib - imin_b) * coeff_b + omin_b; \
\
preserve_color(s->preserve_color, ir, ig, ib, or, og, ob, max, \
&icolor, &ocolor); \
if (ocolor > 0.f) { \
ratio = icolor / ocolor; \
\
or *= ratio; \
og *= ratio; \
ob *= ratio; \
} \
\
dst_r[x] = clip(or, depth); \
dst_g[x] = clip(og, depth); \
dst_b[x] = clip(ob, depth); \
} else { \
dst_r[x] = clip((ir - imin_r) * coeff_r + omin_r, depth); \
dst_g[x] = clip((ig - imin_g) * coeff_g + omin_g, depth); \
dst_b[x] = clip((ib - imin_b) * coeff_b + omin_b, depth); \
} \
} \
\
for (int x = 0; x < linesize && s->nb_comp == 4; x += step) \
dst_a[x] = clip((src_a[x] - imin_a) * coeff_a + omin_a, depth); \
\
src_r += src_linesize; \
src_g += src_linesize; \
src_b += src_linesize; \
src_a += src_linesize; \
\
dst_r += dst_linesize; \
dst_g += dst_linesize; \
dst_b += dst_linesize; \
dst_a += dst_linesize; \
}
#define CLIP8(x, depth) av_clip_uint8(x)
#define CLIP16(x, depth) av_clip_uint16(x)
#define NOCLIP(x, depth) (x)
static int colorlevels_slice_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
DO_COMMON(uint8_t, int, CLIP8, 0, 0)
return 0;
}
static int colorlevels_slice_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;\
DO_COMMON(uint16_t, int, CLIP16, 0, 0)
return 0;
}
static int colorlevels_preserve_slice_8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
DO_COMMON(uint8_t, int, CLIP8, 1, 0)
return 0;
}
static int colorlevels_preserve_slice_16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
DO_COMMON(uint16_t, int, CLIP16, 1, 0)
return 0;
}
static int colorlevels_slice_8_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
DO_COMMON(uint8_t, int, CLIP8, 0, 1)
return 0;
}
static int colorlevels_slice_9_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
const int depth = 9;
DO_COMMON(uint16_t, int, av_clip_uintp2, 0, 1)
return 0;
}
static int colorlevels_slice_10_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
const int depth = 10;
DO_COMMON(uint16_t, int, av_clip_uintp2, 0, 1)
return 0;
}
static int colorlevels_slice_12_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
const int depth = 12;
DO_COMMON(uint16_t, int, av_clip_uintp2, 0, 1)
return 0;
}
static int colorlevels_slice_14_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
const int depth = 14;
DO_COMMON(uint16_t, int, av_clip_uintp2, 0, 1)
return 0;
}
static int colorlevels_slice_16_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
DO_COMMON(uint16_t, int, CLIP16, 0, 1)
return 0;
}
static int colorlevels_slice_32_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
DO_COMMON(float, float, NOCLIP, 0, 1)
return 0;
}
static int colorlevels_preserve_slice_8_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
DO_COMMON(uint8_t, int, CLIP8, 1, 1)
return 0;
}
static int colorlevels_preserve_slice_9_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
const int depth = 9;
DO_COMMON(uint16_t, int, av_clip_uintp2, 1, 1)
return 0;
}
static int colorlevels_preserve_slice_10_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
const int depth = 10;
DO_COMMON(uint16_t, int, av_clip_uintp2, 1, 1)
return 0;
}
static int colorlevels_preserve_slice_12_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
const int depth = 12;
DO_COMMON(uint16_t, int, av_clip_uintp2, 1, 1)
return 0;
}
static int colorlevels_preserve_slice_14_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
const int depth = 14;
DO_COMMON(uint16_t, int, av_clip_uintp2, 1, 1)
return 0;
}
static int colorlevels_preserve_slice_16_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
DO_COMMON(uint16_t, int, CLIP16, 1, 1)
return 0;
}
static int colorlevels_preserve_slice_32_planar(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
ColorLevelsContext *s = ctx->priv;
DO_COMMON(float, float, NOCLIP, 1, 1)
return 0;
}
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
ColorLevelsContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
s->nb_comp = desc->nb_components;
s->planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
s->depth = desc->comp[0].depth;
s->max = (1 << s->depth) - 1;
s->bpp = (desc->comp[0].depth + 7) >> 3;
s->step = s->planar ? 1 : av_get_padded_bits_per_pixel(desc) >> (3 + (s->bpp == 2));
s->linesize = inlink->w * s->step;
ff_fill_rgba_map(s->rgba_map, inlink->format);
if (!s->planar) {
s->colorlevels_slice[0] = colorlevels_slice_8;
s->colorlevels_slice[1] = colorlevels_preserve_slice_8;
if (s->bpp == 2) {
s->colorlevels_slice[0] = colorlevels_slice_16;
s->colorlevels_slice[1] = colorlevels_preserve_slice_16;
}
} else {
switch (s->depth) {
case 8:
s->colorlevels_slice[0] = colorlevels_slice_8_planar;
s->colorlevels_slice[1] = colorlevels_preserve_slice_8_planar;
break;
case 9:
s->colorlevels_slice[0] = colorlevels_slice_9_planar;
s->colorlevels_slice[1] = colorlevels_preserve_slice_9_planar;
break;
case 10:
s->colorlevels_slice[0] = colorlevels_slice_10_planar;
s->colorlevels_slice[1] = colorlevels_preserve_slice_10_planar;
break;
case 12:
s->colorlevels_slice[0] = colorlevels_slice_12_planar;
s->colorlevels_slice[1] = colorlevels_preserve_slice_12_planar;
break;
case 14:
s->colorlevels_slice[0] = colorlevels_slice_14_planar;
s->colorlevels_slice[1] = colorlevels_preserve_slice_14_planar;
break;
case 16:
s->colorlevels_slice[0] = colorlevels_slice_16_planar;
s->colorlevels_slice[1] = colorlevels_preserve_slice_16_planar;
break;
case 32:
s->colorlevels_slice[0] = colorlevels_slice_32_planar;
s->colorlevels_slice[1] = colorlevels_preserve_slice_32_planar;
break;
}
}
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
ColorLevelsContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
const int step = s->step;
ThreadData td;
AVFrame *out;
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);
}
td.h = inlink->h;
td.dst_linesize = out->linesize[0];
td.src_linesize = in->linesize[0];
if (s->planar) {
td.srcrow[R] = in->data[2];
td.dstrow[R] = out->data[2];
td.srcrow[G] = in->data[0];
td.dstrow[G] = out->data[0];
td.srcrow[B] = in->data[1];
td.dstrow[B] = out->data[1];
td.srcrow[A] = in->data[3];
td.dstrow[A] = out->data[3];
} else {
td.srcrow[R] = in->data[0] + s->rgba_map[R] * s->bpp;
td.dstrow[R] = out->data[0] + s->rgba_map[R] * s->bpp;
td.srcrow[G] = in->data[0] + s->rgba_map[G] * s->bpp;
td.dstrow[G] = out->data[0] + s->rgba_map[G] * s->bpp;
td.srcrow[B] = in->data[0] + s->rgba_map[B] * s->bpp;
td.dstrow[B] = out->data[0] + s->rgba_map[B] * s->bpp;
td.srcrow[A] = in->data[0] + s->rgba_map[A] * s->bpp;
td.dstrow[A] = out->data[0] + s->rgba_map[A] * s->bpp;
}
switch (s->bpp) {
case 1:
for (int i = 0; i < s->nb_comp; i++) {
Range *r = &s->range[i];
const uint8_t offset = s->rgba_map[i];
const uint8_t *srcrow = in->data[0];
int imin = lrint(r->in_min * UINT8_MAX);
int imax = lrint(r->in_max * UINT8_MAX);
int omin = lrint(r->out_min * UINT8_MAX);
int omax = lrint(r->out_max * UINT8_MAX);
float coeff;
if (imin < 0) {
imin = UINT8_MAX;
for (int y = 0; y < inlink->h; y++) {
const uint8_t *src = srcrow;
for (int x = 0; x < s->linesize; x += step)
imin = FFMIN(imin, src[x + offset]);
srcrow += in->linesize[0];
}
}
if (imax < 0) {
srcrow = in->data[0];
imax = 0;
for (int y = 0; y < inlink->h; y++) {
const uint8_t *src = srcrow;
for (int x = 0; x < s->linesize; x += step)
imax = FFMAX(imax, src[x + offset]);
srcrow += in->linesize[0];
}
}
coeff = (omax - omin) / (double)(imax - imin);
td.coeff[i] = coeff;
td.imin[i] = imin;
td.omin[i] = omin;
}
break;
case 2:
for (int i = 0; i < s->nb_comp; i++) {
Range *r = &s->range[i];
const uint8_t offset = s->rgba_map[i];
const uint8_t *srcrow = in->data[0];
int imin = lrint(r->in_min * UINT16_MAX);
int imax = lrint(r->in_max * UINT16_MAX);
int omin = lrint(r->out_min * UINT16_MAX);
int omax = lrint(r->out_max * UINT16_MAX);
float coeff;
if (imin < 0) {
imin = UINT16_MAX;
for (int y = 0; y < inlink->h; y++) {
const uint16_t *src = (const uint16_t *)srcrow;
for (int x = 0; x < s->linesize; x += step)
imin = FFMIN(imin, src[x + offset]);
srcrow += in->linesize[0];
}
}
if (imax < 0) {
srcrow = in->data[0];
imax = 0;
for (int y = 0; y < inlink->h; y++) {
const uint16_t *src = (const uint16_t *)srcrow;
for (int x = 0; x < s->linesize; x += step)
imax = FFMAX(imax, src[x + offset]);
srcrow += in->linesize[0];
}
}
coeff = (omax - omin) / (double)(imax - imin);
td.coeff[i] = coeff;
td.imin[i] = imin;
td.omin[i] = omin;
}
break;
case 4:
for (int i = 0; i < s->nb_comp; i++) {
Range *r = &s->range[i];
const uint8_t offset = s->rgba_map[i];
const uint8_t *srcrow = in->data[0];
float imin = r->in_min;
float imax = r->in_max;
float omin = r->out_min;
float omax = r->out_max;
float coeff;
if (imin < 0.f) {
imin = 1.f;
for (int y = 0; y < inlink->h; y++) {
const float *src = (const float *)srcrow;
for (int x = 0; x < s->linesize; x += step)
imin = fminf(imin, src[x + offset]);
srcrow += in->linesize[0];
}
}
if (imax < 0.f) {
srcrow = in->data[0];
imax = 0.f;
for (int y = 0; y < inlink->h; y++) {
const float *src = (const float *)srcrow;
for (int x = 0; x < s->linesize; x += step)
imax = fmaxf(imax, src[x + offset]);
srcrow += in->linesize[0];
}
}
coeff = (omax - omin) / (double)(imax - imin);
td.coeff[i] = coeff;
td.fimin[i] = imin;
td.fomin[i] = omin;
}
break;
}
ff_filter_execute(ctx, s->colorlevels_slice[s->preserve_color > 0], &td, NULL,
FFMIN(inlink->h, ff_filter_get_nb_threads(ctx)));
if (in != out)
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
static const AVFilterPad colorlevels_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_input,
},
};
const AVFilter ff_vf_colorlevels = {
.name = "colorlevels",
.description = NULL_IF_CONFIG_SMALL("Adjust the color levels."),
.priv_size = sizeof(ColorLevelsContext),
.priv_class = &colorlevels_class,
FILTER_INPUTS(colorlevels_inputs),
FILTER_OUTPUTS(ff_video_default_filterpad),
FILTER_PIXFMTS(AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48,
AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
AV_PIX_FMT_GBRP9,
AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
AV_PIX_FMT_GBRP14,
AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = ff_filter_process_command,
};
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