2019-01-15 10:32:49 +00:00
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/*
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* Copyright (c) 2019 Paul B Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*/
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "median.h"
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#include "video.h"
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#define DEPTH 8
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#include "median_template.c"
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#undef DEPTH
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#define DEPTH 9
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#include "median_template.c"
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#undef DEPTH
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#define DEPTH 10
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#include "median_template.c"
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#undef DEPTH
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#define DEPTH 12
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#include "median_template.c"
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#undef DEPTH
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#define DEPTH 14
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#include "median_template.c"
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#undef DEPTH
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#define DEPTH 16
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#include "median_template.c"
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#define OFFSET(x) offsetof(MedianContext, x)
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2019-11-20 21:27:43 +00:00
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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2019-01-15 10:32:49 +00:00
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static const AVOption median_options[] = {
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{ "radius", "set median radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 127, FLAGS },
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{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
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2019-10-30 09:14:23 +00:00
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{ "radiusV", "set median vertical radius", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0},0, 127, FLAGS },
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2020-02-12 10:25:25 +00:00
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{ "percentile", "set median percentile", OFFSET(percentile), AV_OPT_TYPE_FLOAT, {.dbl=.5}, 0., 1., FLAGS },
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2019-01-15 10:32:49 +00:00
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(median);
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static void hadd(htype *dst, const htype *src, int bins)
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{
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for (int i = 0; i < bins; i++)
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dst[i] += src[i];
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}
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static void hsub(htype *dst, const htype *src, int bins)
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{
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for (int i = 0; i < bins; i++)
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dst[i] -= src[i];
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}
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static void hmuladd(htype *dst, const htype *src, int f, int bins)
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{
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for (int i = 0; i < bins; i++)
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dst[i] += f * src[i];
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}
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
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AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, AV_PIX_FMT_GBRP9,
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AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
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AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
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AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
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AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
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2019-11-18 16:24:52 +00:00
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AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
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2019-01-15 10:32:49 +00:00
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AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
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AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_NONE
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};
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2021-08-09 23:25:31 +00:00
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return ff_set_common_formats_from_list(ctx, pix_fmts);
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2019-01-15 10:32:49 +00:00
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}
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2019-11-21 10:21:31 +00:00
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static void check_params(MedianContext *s, AVFilterLink *inlink)
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2019-01-15 10:32:49 +00:00
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{
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for (int i = 0; i < s->nb_planes; i++) {
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if (!(s->planes & (1 << i)))
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continue;
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if (s->planewidth[i] < s->radius * 2 + 1) {
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2019-11-21 10:21:31 +00:00
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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);
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s->radius = (s->planewidth[i] - 1) / 2;
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2019-01-15 10:32:49 +00:00
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}
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2019-10-30 09:14:23 +00:00
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if (s->planeheight[i] < s->radiusV * 2 + 1) {
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2019-11-21 10:21:31 +00:00
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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);
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s->radiusV = (s->planeheight[i] - 1) / 2;
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2019-01-15 10:32:49 +00:00
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}
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}
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2020-02-12 10:25:25 +00:00
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s->t = (2 * s->radius * s->radiusV + s->radiusV + s->radius) * 2.f * s->percentile;
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2019-11-20 21:27:43 +00:00
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}
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static int config_input(AVFilterLink *inlink)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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MedianContext *s = inlink->dst->priv;
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s->depth = desc->comp[0].depth;
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s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
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s->planewidth[0] = s->planewidth[3] = inlink->w;
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s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
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s->planeheight[0] = s->planeheight[3] = inlink->h;
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s->radiusV = !s->radiusV ? s->radius : s->radiusV;
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s->nb_planes = av_pix_fmt_count_planes(inlink->format);
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2019-11-21 10:21:31 +00:00
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check_params(s, inlink);
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2019-11-20 21:27:43 +00:00
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2019-10-30 09:14:23 +00:00
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s->nb_threads = FFMAX(1, FFMIN(s->planeheight[1] / (s->radiusV + 1), ff_filter_get_nb_threads(inlink->dst)));
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2019-01-15 10:32:49 +00:00
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s->bins = 1 << ((s->depth + 1) / 2);
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s->fine_size = s->bins * s->bins * inlink->w;
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s->coarse_size = s->bins * inlink->w;
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s->coarse = av_calloc(s->nb_threads, sizeof(*s->coarse));
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s->fine = av_calloc(s->nb_threads, sizeof(*s->fine));
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if (!s->coarse || !s->fine)
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return AVERROR(ENOMEM);
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for (int i = 0; i < s->nb_threads; i++) {
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s->coarse[i] = av_malloc_array(s->coarse_size, sizeof(**s->coarse));
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s->fine[i] = av_malloc_array(s->fine_size, sizeof(**s->fine));
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if (!s->coarse[i] || !s->fine[i])
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return AVERROR(ENOMEM);
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}
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s->hadd = hadd;
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s->hsub = hsub;
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s->hmuladd = hmuladd;
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switch (s->depth) {
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case 8: s->filter_plane = filter_plane_8; break;
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case 9: s->filter_plane = filter_plane_9; break;
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case 10: s->filter_plane = filter_plane_10; break;
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case 12: s->filter_plane = filter_plane_12; break;
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case 14: s->filter_plane = filter_plane_14; break;
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case 16: s->filter_plane = filter_plane_16; break;
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}
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return 0;
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}
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typedef struct ThreadData {
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AVFrame *in, *out;
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} ThreadData;
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static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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MedianContext *s = ctx->priv;
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ThreadData *td = arg;
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AVFrame *in = td->in;
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AVFrame *out = td->out;
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for (int plane = 0; plane < s->nb_planes; plane++) {
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const int h = s->planeheight[plane];
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const int w = s->planewidth[plane];
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const int slice_h_start = (h * jobnr) / nb_jobs;
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const int slice_h_end = (h * (jobnr+1)) / nb_jobs;
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if (!(s->planes & (1 << plane))) {
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av_image_copy_plane(out->data[plane] + slice_h_start * out->linesize[plane],
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out->linesize[plane],
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in->data[plane] + slice_h_start * in->linesize[plane],
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in->linesize[plane],
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w * ((s->depth + 7) / 8),
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slice_h_end - slice_h_start);
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continue;
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}
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s->filter_plane(ctx, in->data[plane],
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in->linesize[plane],
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out->data[plane] + slice_h_start * out->linesize[plane],
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out->linesize[plane], w, h,
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slice_h_start, slice_h_end, jobnr);
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}
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return 0;
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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MedianContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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ThreadData td;
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AVFrame *out;
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out) {
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av_frame_free(&in);
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return AVERROR(ENOMEM);
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}
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av_frame_copy_props(out, in);
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td.in = in; td.out = out;
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2021-08-15 19:33:25 +00:00
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ff_filter_execute(ctx, filter_slice, &td, NULL, s->nb_threads);
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2019-01-15 10:32:49 +00:00
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av_frame_free(&in);
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return ff_filter_frame(outlink, out);
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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MedianContext *s = ctx->priv;
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for (int i = 0; i < s->nb_threads && s->coarse && s->fine; i++) {
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av_freep(&s->coarse[i]);
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av_freep(&s->fine[i]);
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}
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av_freep(&s->coarse);
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av_freep(&s->fine);
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}
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2019-11-20 21:27:43 +00:00
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static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
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char *res, int res_len, int flags)
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{
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MedianContext *s = ctx->priv;
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int ret;
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ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
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if (ret < 0)
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return ret;
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2019-11-21 10:21:31 +00:00
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if (!s->radiusV)
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s->radiusV = s->radius;
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check_params(s, ctx->inputs[0]);
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2019-11-20 21:27:43 +00:00
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return 0;
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}
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2019-01-15 10:32:49 +00:00
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static const AVFilterPad median_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = config_input,
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.filter_frame = filter_frame,
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},
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};
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static const AVFilterPad median_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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},
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};
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2021-04-19 16:33:56 +00:00
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const AVFilter ff_vf_median = {
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2019-01-15 10:32:49 +00:00
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.name = "median",
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.description = NULL_IF_CONFIG_SMALL("Apply Median filter."),
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.priv_size = sizeof(MedianContext),
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.priv_class = &median_class,
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.uninit = uninit,
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2021-08-12 11:05:31 +00:00
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FILTER_INPUTS(median_inputs),
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FILTER_OUTPUTS(median_outputs),
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2021-09-27 10:07:35 +00:00
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FILTER_QUERY_FUNC(query_formats),
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2019-01-15 10:32:49 +00:00
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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2019-11-20 21:27:43 +00:00
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.process_command = process_command,
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2019-01-15 10:32:49 +00:00
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};
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