/* * 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 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 }, { 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_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 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); s->t = 2 * s->radius * s->radiusV + 2 * s->radius; 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_ERROR, "The %d plane width %d must be not less than %d\n", i, s->planewidth[i], s->radius * 2 + 1); return AVERROR(EINVAL); } if (s->planeheight[i] < s->radiusV * 2 + 1) { av_log(inlink->dst, AV_LOG_ERROR, "The %d plane height %d must be not less than %d\n", i, s->planeheight[i], s->radiusV * 2 + 1); return AVERROR(EINVAL); } } 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 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, };