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FFmpeg/libavfilter/vf_median.c
Andreas Rheinhardt 790f793844 avutil/common: Don't auto-include mem.h 
There are lots of files that don't need it: The number of object
files that actually need it went down from 2011 to 884 here.

Keep it for external users in order to not cause breakages.

Also improve the other headers a bit while just at it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-03-31 00:08:43 +01:00

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/*
* 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/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.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 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
};
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;
ff_filter_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,
},
};
const AVFilter ff_vf_median = {
.name = "median",
.description = NULL_IF_CONFIG_SMALL("Apply Median filter."),
.priv_size = sizeof(MedianContext),
.priv_class = &median_class,
.uninit = uninit,
FILTER_INPUTS(median_inputs),
FILTER_OUTPUTS(ff_video_default_filterpad),
FILTER_PIXFMTS_ARRAY(pix_fmts),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
.process_command = process_command,
};
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