478 lines
18 KiB
C
478 lines
18 KiB
C
/*
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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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*/
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#include "config_components.h"
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#include "libavutil/avstring.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/qsort.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 "framesync.h"
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#include "video.h"
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typedef struct XMedianContext {
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const AVClass *class;
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const AVPixFmtDescriptor *desc;
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int nb_inputs;
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int nb_frames;
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int nb_threads;
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int planes;
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float percentile;
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int xmedian;
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int radius;
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int index;
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int depth;
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int max;
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int nb_planes;
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int linesizes[4];
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int width[4];
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int height[4];
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uint8_t **data;
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int *linesize;
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AVFrame **frames;
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FFFrameSync fs;
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int (*median_frames)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} XMedianContext;
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static const enum AVPixelFormat pixel_fmts[] = {
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AV_PIX_FMT_GRAY8,
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AV_PIX_FMT_GRAY9,
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AV_PIX_FMT_GRAY10,
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AV_PIX_FMT_GRAY12,
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AV_PIX_FMT_GRAY14,
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AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
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AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
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AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUVJ411P,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
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AV_PIX_FMT_YUV440P10,
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AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
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AV_PIX_FMT_YUV440P12,
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AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
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AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
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AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
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AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
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AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
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AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
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AV_PIX_FMT_NONE
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};
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static av_cold int init(AVFilterContext *ctx)
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{
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XMedianContext *s = ctx->priv;
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if (!s->xmedian)
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s->nb_inputs = s->radius * 2 + 1;
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if (s->nb_inputs & 1)
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s->index = s->radius * 2.f * s->percentile;
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else
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s->index = av_clip(s->radius * 2.f * s->percentile, 1, s->nb_inputs - 1);
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s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
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if (!s->frames)
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return AVERROR(ENOMEM);
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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 compare8(const void *p1, const void *p2)
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{
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int left = *(const uint8_t *)p1;
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int right = *(const uint8_t *)p2;
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return FFDIFFSIGN(left, right);
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}
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static int compare16(const void *p1, const void *p2)
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{
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int left = *(const uint16_t *)p1;
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int right = *(const uint16_t *)p2;
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return FFDIFFSIGN(left, right);
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}
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#define MEDIAN_SLICE(name, type, comparei) \
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static int median_frames ## name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
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{ \
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XMedianContext *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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const int nb_inputs = s->nb_inputs; \
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uint8_t **srcf = s->data + jobnr * nb_inputs; \
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int *linesize = s->linesize + jobnr * nb_inputs; \
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const int radius = s->radius; \
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const int index = s->index; \
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type values[256]; \
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\
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for (int p = 0; p < s->nb_planes; p++) { \
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const int slice_start = (s->height[p] * jobnr) / nb_jobs; \
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const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs; \
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const int width = s->width[p]; \
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type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
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ptrdiff_t dst_linesize = out->linesize[p] / sizeof(type); \
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\
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if (!((1 << p) & s->planes)) { \
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av_image_copy_plane((uint8_t *)dst, out->linesize[p], \
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in[radius]->data[p] + slice_start * in[radius]->linesize[p], \
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in[radius]->linesize[p], \
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s->linesizes[p], slice_end - slice_start); \
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continue; \
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} \
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\
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for (int i = 0; i < nb_inputs; i++) \
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linesize[i] = in[i]->linesize[p]; \
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\
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for (int i = 0; i < nb_inputs; i++) \
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srcf[i] = in[i]->data[p] + slice_start * linesize[i]; \
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\
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for (int y = slice_start; y < slice_end; y++) { \
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for (int x = 0; x < width; x++) { \
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for (int i = 0; i < nb_inputs; i++) { \
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const type *src = (const type *)srcf[i]; \
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values[i] = src[x]; \
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} \
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\
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AV_QSORT(values, nb_inputs, type, comparei); \
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if (nb_inputs & 1) \
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dst[x] = values[index]; \
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else \
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dst[x] = (values[index] + values[index - 1]) >> 1; \
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} \
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\
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dst += dst_linesize; \
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for (int i = 0; i < nb_inputs; i++) \
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srcf[i] += linesize[i]; \
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} \
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} \
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\
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return 0; \
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}
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MEDIAN_SLICE(8, uint8_t, compare8)
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MEDIAN_SLICE(16, uint16_t, compare16)
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static void update_index(XMedianContext *s)
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{
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if (s->nb_inputs & 1)
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s->index = s->radius * 2.f * s->percentile;
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else
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s->index = av_clip(s->radius * 2.f * s->percentile, 1, s->nb_inputs - 1);
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}
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static int process_frame(FFFrameSync *fs)
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{
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AVFilterContext *ctx = fs->parent;
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AVFilterLink *outlink = ctx->outputs[0];
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XMedianContext *s = fs->opaque;
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AVFrame **in = s->frames;
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AVFrame *out;
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ThreadData td;
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int i, ret;
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update_index(s);
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for (i = 0; i < s->nb_inputs; i++) {
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if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)
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return ret;
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}
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if (ctx->is_disabled) {
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out = av_frame_clone(in[0]);
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} else {
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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}
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if (!out)
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return AVERROR(ENOMEM);
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out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
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if (!ctx->is_disabled) {
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td.in = in;
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td.out = out;
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ff_filter_execute(ctx, s->median_frames, &td, NULL,
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FFMIN(s->height[1], s->nb_threads));
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}
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return ff_filter_frame(outlink, out);
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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XMedianContext *s = ctx->priv;
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AVRational frame_rate = ctx->inputs[0]->frame_rate;
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AVRational sar = ctx->inputs[0]->sample_aspect_ratio;
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AVFilterLink *inlink = ctx->inputs[0];
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int height = ctx->inputs[0]->h;
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int width = ctx->inputs[0]->w;
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FFFrameSyncIn *in;
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int i, ret;
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for (int i = 1; i < s->nb_inputs && s->xmedian; i++) {
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if (ctx->inputs[i]->h != height || ctx->inputs[i]->w != width) {
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av_log(ctx, AV_LOG_ERROR, "Input %d size (%dx%d) does not match input %d size (%dx%d).\n", i, ctx->inputs[i]->w, ctx->inputs[i]->h, 0, width, height);
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return AVERROR(EINVAL);
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}
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}
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s->desc = av_pix_fmt_desc_get(outlink->format);
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if (!s->desc)
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return AVERROR_BUG;
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s->nb_planes = av_pix_fmt_count_planes(outlink->format);
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s->depth = s->desc->comp[0].depth;
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s->max = (1 << s->depth) - 1;
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s->nb_threads = ff_filter_get_nb_threads(ctx);
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if (s->depth <= 8)
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s->median_frames = median_frames8;
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else
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s->median_frames = median_frames16;
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if ((ret = av_image_fill_linesizes(s->linesizes, inlink->format, inlink->w)) < 0)
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return ret;
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s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
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s->width[0] = s->width[3] = inlink->w;
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s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
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s->height[0] = s->height[3] = inlink->h;
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s->data = av_calloc(s->nb_threads * s->nb_inputs, sizeof(*s->data));
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if (!s->data)
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return AVERROR(ENOMEM);
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s->linesize = av_calloc(s->nb_threads * s->nb_inputs, sizeof(*s->linesize));
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if (!s->linesize)
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return AVERROR(ENOMEM);
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if (!s->xmedian)
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return 0;
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outlink->w = width;
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outlink->h = height;
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outlink->frame_rate = frame_rate;
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outlink->sample_aspect_ratio = sar;
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if ((ret = ff_framesync_init(&s->fs, ctx, s->nb_inputs)) < 0)
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return ret;
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in = s->fs.in;
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s->fs.opaque = s;
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s->fs.on_event = process_frame;
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for (i = 0; i < s->nb_inputs; i++) {
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AVFilterLink *inlink = ctx->inputs[i];
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in[i].time_base = inlink->time_base;
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in[i].sync = 1;
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in[i].before = EXT_STOP;
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in[i].after = EXT_INFINITY;
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}
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ret = ff_framesync_configure(&s->fs);
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outlink->time_base = s->fs.time_base;
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return ret;
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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XMedianContext *s = ctx->priv;
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ff_framesync_uninit(&s->fs);
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for (int i = 0; i < s->nb_frames && s->frames && !s->xmedian; i++)
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av_frame_free(&s->frames[i]);
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av_freep(&s->frames);
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av_freep(&s->data);
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av_freep(&s->linesize);
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}
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static int activate(AVFilterContext *ctx)
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{
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XMedianContext *s = ctx->priv;
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return ff_framesync_activate(&s->fs);
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}
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#if CONFIG_XMEDIAN_FILTER
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static av_cold int xmedian_init(AVFilterContext *ctx)
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{
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XMedianContext *s = ctx->priv;
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int ret;
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s->xmedian = 1;
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s->radius = s->nb_inputs / 2;
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for (int i = 0; i < s->nb_inputs; i++) {
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AVFilterPad pad = { 0 };
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pad.type = AVMEDIA_TYPE_VIDEO;
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pad.name = av_asprintf("input%d", i);
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if (!pad.name)
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return AVERROR(ENOMEM);
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if ((ret = ff_append_inpad_free_name(ctx, &pad)) < 0)
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return ret;
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}
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return init(ctx);
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}
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#define OFFSET(x) offsetof(XMedianContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
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#define TFLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption xmedian_options[] = {
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{ "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=3}, 3, 255, .flags = FLAGS },
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{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags =TFLAGS },
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{ "percentile", "set percentile", OFFSET(percentile),AV_OPT_TYPE_FLOAT,{.dbl=0.5}, 0, 1, .flags =TFLAGS },
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{ NULL },
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};
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static const AVFilterPad outputs[] = {
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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_output,
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},
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};
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FRAMESYNC_DEFINE_CLASS(xmedian, XMedianContext, fs);
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const AVFilter ff_vf_xmedian = {
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.name = "xmedian",
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.description = NULL_IF_CONFIG_SMALL("Pick median pixels from several video inputs."),
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.priv_size = sizeof(XMedianContext),
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.priv_class = &xmedian_class,
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FILTER_OUTPUTS(outputs),
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FILTER_PIXFMTS_ARRAY(pixel_fmts),
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.preinit = xmedian_framesync_preinit,
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.init = xmedian_init,
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.uninit = uninit,
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.activate = activate,
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.flags = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_SLICE_THREADS |
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AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
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.process_command = ff_filter_process_command,
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};
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#endif /* CONFIG_XMEDIAN_FILTER */
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#if CONFIG_TMEDIAN_FILTER
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static int tmedian_filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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AVFilterLink *outlink = ctx->outputs[0];
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XMedianContext *s = ctx->priv;
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ThreadData td;
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AVFrame *out;
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update_index(s);
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if (s->nb_frames < s->nb_inputs) {
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s->frames[s->nb_frames] = in;
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s->nb_frames++;
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if (s->nb_frames < s->nb_inputs)
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return 0;
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} else {
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av_frame_free(&s->frames[0]);
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memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
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s->frames[s->nb_inputs - 1] = in;
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}
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if (ctx->is_disabled) {
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out = av_frame_clone(s->frames[0]);
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if (!out)
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return AVERROR(ENOMEM);
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return ff_filter_frame(outlink, out);
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}
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out)
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return AVERROR(ENOMEM);
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out->pts = s->frames[0]->pts;
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td.out = out;
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td.in = s->frames;
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ff_filter_execute(ctx, s->median_frames, &td, NULL,
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FFMIN(s->height[1], s->nb_threads));
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return ff_filter_frame(outlink, out);
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}
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static const AVOption tmedian_options[] = {
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{ "radius", "set median filter radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 127, .flags = FLAGS },
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{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags =TFLAGS },
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{ "percentile", "set percentile", OFFSET(percentile), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, .flags =TFLAGS },
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{ NULL },
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};
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static const AVFilterPad tmedian_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = tmedian_filter_frame,
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},
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};
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static const AVFilterPad tmedian_outputs[] = {
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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_output,
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|
},
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|
};
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|
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AVFILTER_DEFINE_CLASS(tmedian);
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const AVFilter ff_vf_tmedian = {
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|
.name = "tmedian",
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.description = NULL_IF_CONFIG_SMALL("Pick median pixels from successive frames."),
|
|
.priv_size = sizeof(XMedianContext),
|
|
.priv_class = &tmedian_class,
|
|
FILTER_INPUTS(tmedian_inputs),
|
|
FILTER_OUTPUTS(tmedian_outputs),
|
|
FILTER_PIXFMTS_ARRAY(pixel_fmts),
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
|
|
.process_command = ff_filter_process_command,
|
|
};
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|
|
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#endif /* CONFIG_TMEDIAN_FILTER */
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