libavfilter/vf_median.c - manifest_repos/ffmpeg - Git at Google

 /*
  * Copyright (c) 2019 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
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  */

 #include "libavutil/avassert.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
 #include "avfilter.h"
 #include "formats.h"
 #include "internal.h"
 #include "median.h"
 #include "video.h"

 #define DEPTH 8
 #include "median_template.c"

 #undef DEPTH
 #define DEPTH 9
 #include "median_template.c"

 #undef DEPTH
 #define DEPTH 10
 #include "median_template.c"

 #undef DEPTH
 #define DEPTH 12
 #include "median_template.c"

 #undef DEPTH
 #define DEPTH 14
 #include "median_template.c"

 #undef DEPTH
 #define DEPTH 16
 #include "median_template.c"

 #define OFFSET(x) offsetof(MedianContext, x)
 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

 static const AVOption median_options[] = {
     { "radius", "set median radius",    OFFSET(radius), AV_OPT_TYPE_INT,   {.i64=1},     1,  127, FLAGS },
     { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT,   {.i64=0xF},   0,  0xF, FLAGS },
     { "radiusV", "set median vertical radius", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0},0, 127, FLAGS },
     { "percentile", "set median percentile", OFFSET(percentile), AV_OPT_TYPE_FLOAT, {.dbl=.5}, 0., 1., FLAGS },
     { NULL }
 };

 AVFILTER_DEFINE_CLASS(median);

 static void hadd(htype *dst, const htype *src, int bins)
 {
     for (int i = 0; i < bins; i++)
         dst[i] += src[i];
 }

 static void hsub(htype *dst, const htype *src, int bins)
 {
     for (int i = 0; i < bins; i++)
         dst[i] -= src[i];
 }

 static void hmuladd(htype *dst, const htype *src, int f, int bins)
 {
     for (int i = 0; i < bins; i++)
         dst[i] += f * src[i];
 }

 static int query_formats(AVFilterContext *ctx)
 {
     static const enum AVPixelFormat pix_fmts[] = {
         AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
         AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
         AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
         AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
         AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
         AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_GBRP9,
         AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
         AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
         AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
         AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
         AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
         AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
         AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
         AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
         AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
         AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
         AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
         AV_PIX_FMT_NONE
     };

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

 static void check_params(MedianContext *s, AVFilterLink *inlink)
 {
     for (int i = 0; i < s->nb_planes; i++) {
         if (!(s->planes & (1 << i)))
             continue;

         if (s->planewidth[i] < s->radius * 2 + 1) {
             av_log(inlink->dst, AV_LOG_WARNING, "The %d plane width %d must be not less than %d, clipping radius.\n", i, s->planewidth[i], s->radius * 2 + 1);
             s->radius = (s->planewidth[i] - 1) / 2;
         }

         if (s->planeheight[i] < s->radiusV * 2 + 1) {
             av_log(inlink->dst, AV_LOG_WARNING, "The %d plane height %d must be not less than %d, clipping radiusV.\n", i, s->planeheight[i], s->radiusV * 2 + 1);
             s->radiusV = (s->planeheight[i] - 1) / 2;
         }
     }

     s->t = (2 * s->radius * s->radiusV + s->radiusV + s->radius) * 2.f * s->percentile;
 }

 static int config_input(AVFilterLink *inlink)
 {
     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
     MedianContext *s = inlink->dst->priv;

     s->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->radiusV = !s->radiusV ? s->radius : s->radiusV;
     s->nb_planes = av_pix_fmt_count_planes(inlink->format);

     check_params(s, inlink);

     s->nb_threads = FFMAX(1, FFMIN(s->planeheight[1] / (s->radiusV + 1), ff_filter_get_nb_threads(inlink->dst)));
     s->bins   = 1 << ((s->depth + 1) / 2);
     s->fine_size = s->bins * s->bins * inlink->w;
     s->coarse_size = s->bins * inlink->w;
     s->coarse = av_calloc(s->nb_threads, sizeof(*s->coarse));
     s->fine   = av_calloc(s->nb_threads, sizeof(*s->fine));
     if (!s->coarse || !s->fine)
         return AVERROR(ENOMEM);
     for (int i = 0; i < s->nb_threads; i++) {
         s->coarse[i] = av_malloc_array(s->coarse_size, sizeof(**s->coarse));
         s->fine[i]   = av_malloc_array(s->fine_size, sizeof(**s->fine));
         if (!s->coarse[i] || !s->fine[i])
             return AVERROR(ENOMEM);
     }

     s->hadd = hadd;
     s->hsub = hsub;
     s->hmuladd = hmuladd;

     switch (s->depth) {
     case  8: s->filter_plane = filter_plane_8;  break;
     case  9: s->filter_plane = filter_plane_9;  break;
     case 10: s->filter_plane = filter_plane_10; break;
     case 12: s->filter_plane = filter_plane_12; break;
     case 14: s->filter_plane = filter_plane_14; break;
     case 16: s->filter_plane = filter_plane_16; break;
     }

     return 0;
 }

 typedef struct ThreadData {
     AVFrame *in, *out;
 } ThreadData;

 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
 {
     MedianContext *s = ctx->priv;
     ThreadData *td = arg;
     AVFrame *in = td->in;
     AVFrame *out = td->out;

     for (int plane = 0; plane < s->nb_planes; plane++) {
         const int h = s->planeheight[plane];
         const int w = s->planewidth[plane];
         const int slice_h_start = (h * jobnr) / nb_jobs;
         const int slice_h_end = (h * (jobnr+1)) / nb_jobs;

         if (!(s->planes & (1 << plane))) {
             av_image_copy_plane(out->data[plane] + slice_h_start * out->linesize[plane],
                                 out->linesize[plane],
                                 in->data[plane] + slice_h_start * in->linesize[plane],
                                 in->linesize[plane],
                                 w * ((s->depth + 7) / 8),
                                 slice_h_end - slice_h_start);
             continue;
         }

         s->filter_plane(ctx, in->data[plane],
                         in->linesize[plane],
                         out->data[plane] + slice_h_start * out->linesize[plane],
                         out->linesize[plane], w, h,
                         slice_h_start, slice_h_end, jobnr);
     }

     return 0;
 }

 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
 {
     AVFilterContext *ctx = inlink->dst;
     MedianContext *s = ctx->priv;
     AVFilterLink *outlink = ctx->outputs[0];
     ThreadData td;
     AVFrame *out;

     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.in = in; td.out = out;
     ctx->internal->execute(ctx, filter_slice, &td, NULL, s->nb_threads);

     av_frame_free(&in);
     return ff_filter_frame(outlink, out);
 }

 static av_cold void uninit(AVFilterContext *ctx)
 {
     MedianContext *s = ctx->priv;

     for (int i = 0; i < s->nb_threads && s->coarse && s->fine; i++) {
         av_freep(&s->coarse[i]);
         av_freep(&s->fine[i]);
     }

     av_freep(&s->coarse);
     av_freep(&s->fine);
 }

 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
                            char *res, int res_len, int flags)
 {
     MedianContext *s = ctx->priv;
     int ret;

     ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
     if (ret < 0)
         return ret;

     if (!s->radiusV)
         s->radiusV = s->radius;
     check_params(s, ctx->inputs[0]);

     return 0;
 }

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

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

 AVFilter ff_vf_median = {
     .name          = "median",
     .description   = NULL_IF_CONFIG_SMALL("Apply Median filter."),
     .priv_size     = sizeof(MedianContext),
     .priv_class    = &median_class,
     .uninit        = uninit,
     .query_formats = query_formats,
     .inputs        = median_inputs,
     .outputs       = median_outputs,
     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
     .process_command = process_command,
 };
	/*
	* Copyright (c) 2019 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
	* Redistribution and use in source and binary forms, with or without modification,
	* are permitted provided that the following conditions are met:
	*/

	#include "libavutil/avassert.h"
	#include "libavutil/imgutils.h"
	#include "libavutil/opt.h"
	#include "libavutil/pixdesc.h"
	#include "avfilter.h"
	#include "formats.h"
	#include "internal.h"
	#include "median.h"
	#include "video.h"

	#define DEPTH 8
	#include "median_template.c"

	#undef DEPTH
	#define DEPTH 9
	#include "median_template.c"

	#undef DEPTH
	#define DEPTH 10
	#include "median_template.c"

	#undef DEPTH
	#define DEPTH 12
	#include "median_template.c"

	#undef DEPTH
	#define DEPTH 14
	#include "median_template.c"

	#undef DEPTH
	#define DEPTH 16
	#include "median_template.c"

	#define OFFSET(x) offsetof(MedianContext, x)
	#define FLAGS AV_OPT_FLAG_VIDEO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_RUNTIME_PARAM

	static const AVOption median_options[] = {
	{ "radius", "set median radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 127, FLAGS },
	{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
	{ "radiusV", "set median vertical radius", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0},0, 127, FLAGS },
	{ "percentile", "set median percentile", OFFSET(percentile), AV_OPT_TYPE_FLOAT, {.dbl=.5}, 0., 1., FLAGS },
	{ NULL }
	};

	AVFILTER_DEFINE_CLASS(median);

	static void hadd(htype dst, const htype src, int bins)
	{
	for (int i = 0; i < bins; i++)
	dst[i] += src[i];
	}

	static void hsub(htype dst, const htype src, int bins)
	{
	for (int i = 0; i < bins; i++)
	dst[i] -= src[i];
	}

	static void hmuladd(htype dst, const htype src, int f, int bins)
	{
	for (int i = 0; i < bins; i++)
	dst[i] += f * src[i];
	}

	static int query_formats(AVFilterContext *ctx)
	{
	static const enum AVPixelFormat pix_fmts[] = {
	AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
	AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
	AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
	AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
	AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
	AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
	AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_GBRP9,
	AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
	AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
	AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
	AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
	AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
	AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
	AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
	AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
	AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
	AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
	AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
	AV_PIX_FMT_NONE
	};

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

	static void check_params(MedianContext s, AVFilterLink inlink)
	{
	for (int i = 0; i < s->nb_planes; i++) {
	if (!(s->planes & (1 << i)))
	continue;

	if (s->planewidth[i] < s->radius * 2 + 1) {
	av_log(inlink->dst, AV_LOG_WARNING, "The %d plane width %d must be not less than %d, clipping radius.\n", i, s->planewidth[i], s->radius * 2 + 1);
	s->radius = (s->planewidth[i] - 1) / 2;
	}

	if (s->planeheight[i] < s->radiusV * 2 + 1) {
	av_log(inlink->dst, AV_LOG_WARNING, "The %d plane height %d must be not less than %d, clipping radiusV.\n", i, s->planeheight[i], s->radiusV * 2 + 1);
	s->radiusV = (s->planeheight[i] - 1) / 2;
	}
	}

	s->t = (2 * s->radius * s->radiusV + s->radiusV + s->radius) * 2.f * s->percentile;
	}

	static int config_input(AVFilterLink *inlink)
	{
	const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
	MedianContext *s = inlink->dst->priv;

	s->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->radiusV = !s->radiusV ? s->radius : s->radiusV;
	s->nb_planes = av_pix_fmt_count_planes(inlink->format);

	check_params(s, inlink);

	s->nb_threads = FFMAX(1, FFMIN(s->planeheight[1] / (s->radiusV + 1), ff_filter_get_nb_threads(inlink->dst)));
	s->bins = 1 << ((s->depth + 1) / 2);
	s->fine_size = s->bins * s->bins * inlink->w;
	s->coarse_size = s->bins * inlink->w;
	s->coarse = av_calloc(s->nb_threads, sizeof(*s->coarse));
	s->fine = av_calloc(s->nb_threads, sizeof(*s->fine));
	if (!s->coarse \|\| !s->fine)
	return AVERROR(ENOMEM);
	for (int i = 0; i < s->nb_threads; i++) {
	s->coarse[i] = av_malloc_array(s->coarse_size, sizeof(**s->coarse));
	s->fine[i] = av_malloc_array(s->fine_size, sizeof(**s->fine));
	if (!s->coarse[i] \|\| !s->fine[i])
	return AVERROR(ENOMEM);
	}

	s->hadd = hadd;
	s->hsub = hsub;
	s->hmuladd = hmuladd;

	switch (s->depth) {
	case 8: s->filter_plane = filter_plane_8; break;
	case 9: s->filter_plane = filter_plane_9; break;
	case 10: s->filter_plane = filter_plane_10; break;
	case 12: s->filter_plane = filter_plane_12; break;
	case 14: s->filter_plane = filter_plane_14; break;
	case 16: s->filter_plane = filter_plane_16; break;
	}

	return 0;
	}

	typedef struct ThreadData {
	AVFrame in, out;
	} ThreadData;

	static int filter_slice(AVFilterContext ctx, void arg, int jobnr, int nb_jobs)
	{
	MedianContext *s = ctx->priv;
	ThreadData *td = arg;
	AVFrame *in = td->in;
	AVFrame *out = td->out;

	for (int plane = 0; plane < s->nb_planes; plane++) {
	const int h = s->planeheight[plane];
	const int w = s->planewidth[plane];
	const int slice_h_start = (h * jobnr) / nb_jobs;
	const int slice_h_end = (h * (jobnr+1)) / nb_jobs;

	if (!(s->planes & (1 << plane))) {
	av_image_copy_plane(out->data[plane] + slice_h_start * out->linesize[plane],
	out->linesize[plane],
	in->data[plane] + slice_h_start * in->linesize[plane],
	in->linesize[plane],
	w * ((s->depth + 7) / 8),
	slice_h_end - slice_h_start);
	continue;
	}

	s->filter_plane(ctx, in->data[plane],
	in->linesize[plane],
	out->data[plane] + slice_h_start * out->linesize[plane],
	out->linesize[plane], w, h,
	slice_h_start, slice_h_end, jobnr);
	}

	return 0;
	}

	static int filter_frame(AVFilterLink inlink, AVFrame in)
	{
	AVFilterContext *ctx = inlink->dst;
	MedianContext *s = ctx->priv;
	AVFilterLink *outlink = ctx->outputs[0];
	ThreadData td;
	AVFrame *out;

	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.in = in; td.out = out;
	ctx->internal->execute(ctx, filter_slice, &td, NULL, s->nb_threads);

	av_frame_free(&in);
	return ff_filter_frame(outlink, out);
	}

	static av_cold void uninit(AVFilterContext *ctx)
	{
	MedianContext *s = ctx->priv;

	for (int i = 0; i < s->nb_threads && s->coarse && s->fine; i++) {
	av_freep(&s->coarse[i]);
	av_freep(&s->fine[i]);
	}

	av_freep(&s->coarse);
	av_freep(&s->fine);
	}

	static int process_command(AVFilterContext ctx, const char cmd, const char *args,
	char *res, int res_len, int flags)
	{
	MedianContext *s = ctx->priv;
	int ret;

	ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
	if (ret < 0)
	return ret;

	if (!s->radiusV)
	s->radiusV = s->radius;
	check_params(s, ctx->inputs[0]);

	return 0;
	}

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

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

	AVFilter ff_vf_median = {
	.name = "median",
	.description = NULL_IF_CONFIG_SMALL("Apply Median filter."),
	.priv_size = sizeof(MedianContext),
	.priv_class = &median_class,
	.uninit = uninit,
	.query_formats = query_formats,
	.inputs = median_inputs,
	.outputs = median_outputs,
	.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC \| AVFILTER_FLAG_SLICE_THREADS,
	.process_command = process_command,
	};