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https://github.com/FFmpeg/FFmpeg.git
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790f793844
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>
341 lines
16 KiB
C
341 lines
16 KiB
C
/*
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* Copyright (C) 2019 Leo Zhang <leozhang@qiyi.com>
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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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/**
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* @file
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* yaep(yet another edge preserving) blur filter
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*
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* This implementation is based on an algorithm described in
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* "J. S. Lee, Digital image enhancement and noise filtering by use of local statistics, IEEE Trans. Pattern
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* Anal. Mach. Intell. PAMI-2, 1980."
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*/
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "libavutil/imgutils.h"
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#include "avfilter.h"
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#include "internal.h"
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#include "video.h"
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typedef struct YAEPContext {
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const AVClass *class;
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int planes;
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int radius;
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int sigma;
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int nb_planes;
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int planewidth[4];
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int planeheight[4];
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int depth;
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uint64_t *sat; ///< summed area table
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uint64_t *square_sat; ///< square summed area table
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int sat_linesize;
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int (*pre_calculate_row)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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int (*filter_slice )(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} YAEPContext;
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static av_cold void uninit(AVFilterContext *ctx)
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{
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YAEPContext *s = ctx->priv;
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av_freep(&s->sat);
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av_freep(&s->square_sat);
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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_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_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_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
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AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
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AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
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AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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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_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, 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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typedef struct ThreadData {
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int width;
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int height;
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int src_linesize;
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int dst_linesize;
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uint8_t *src;
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uint8_t *dst;
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} ThreadData;
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#define PRE_CALCULATE_ROW(type, name) \
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static int pre_calculate_row_##name(AVFilterContext *ctx, void *arg, \
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int jobnr, int nb_jobs) \
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{ \
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ThreadData *td = arg; \
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YAEPContext *s = ctx->priv; \
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\
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const int width = td->width; \
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const int height = td->height; \
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const int linesize = td->src_linesize / sizeof(type); \
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const int sat_linesize = s->sat_linesize; \
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\
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const int starty = height * jobnr / nb_jobs; \
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const int endy = height * (jobnr+1) / nb_jobs; \
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\
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uint64_t *sat = s->sat + (starty + 1) * sat_linesize; \
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uint64_t *square_sat = s->square_sat + (starty + 1) * sat_linesize; \
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const type *src = (const type *)td->src + starty * linesize; \
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\
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int x, y; \
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\
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for (y = starty; y < endy; y++) { \
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for (x = 0; x < width; x++) { \
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sat[x+1] = sat[x] + src[x]; \
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square_sat[x+1] = square_sat[x] + (uint64_t)src[x] * src[x]; \
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} \
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sat += sat_linesize; \
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square_sat += sat_linesize; \
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src += linesize; \
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} \
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\
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return 0; \
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}
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PRE_CALCULATE_ROW(uint8_t, byte)
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PRE_CALCULATE_ROW(uint16_t, word)
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static int pre_calculate_col(AVFilterContext *ctx, void *arg,
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int jobnr, int nb_jobs)
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{
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ThreadData *td = arg;
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YAEPContext *s = ctx->priv;
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const int width = td->width;
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const int height = td->height;
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const int sat_linesize = s->sat_linesize;
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const int startx = width * jobnr / nb_jobs;
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const int endx = width * (jobnr + 1) / nb_jobs;
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uint64_t *sat, *square_sat;
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int x, y;
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for (x = startx; x < endx; x++) {
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sat = s->sat + x + 1;
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square_sat = s->square_sat + x + 1;
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for (y = 0; y < height; y++) {
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*(sat+sat_linesize) += *sat;
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*(square_sat+sat_linesize) += *square_sat;
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sat += sat_linesize;
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square_sat += sat_linesize;
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}
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}
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return 0;
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}
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#define FILTER_SLICE(type, name) \
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static int filter_slice_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
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{ \
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ThreadData *td = arg; \
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YAEPContext *s = ctx->priv; \
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\
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const int width = td->width; \
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const int height = td->height; \
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const int src_linesize = td->src_linesize / sizeof(type); \
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const int dst_linesize = td->dst_linesize / sizeof(type); \
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const int sat_linesize = s->sat_linesize; \
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const int sigma = s->sigma; \
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const int radius = s->radius; \
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\
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uint64_t *sat = s->sat; \
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uint64_t *square_sat = s->square_sat; \
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const type *src = (const type *)td->src; \
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type *dst = (type *)td->dst; \
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\
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const int starty = height * jobnr / nb_jobs; \
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const int endy = height * (jobnr + 1) / nb_jobs; \
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\
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int x, y; \
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int lower_x, higher_x; \
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int lower_y, higher_y; \
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int dist_y, count; \
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uint64_t sum, square_sum, mean, var; \
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\
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for (y = starty; y < endy; y++) { \
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lower_y = y - radius < 0 ? 0 : y - radius; \
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higher_y = y + radius + 1 > height ? height : y + radius + 1; \
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dist_y = higher_y - lower_y; \
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for (x = 0; x < width; x++) { \
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lower_x = x - radius < 0 ? 0 : x - radius; \
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higher_x = x + radius + 1 > width ? width : x + radius + 1; \
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count = dist_y * (higher_x - lower_x); \
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sum = sat[higher_y * sat_linesize + higher_x] \
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- sat[higher_y * sat_linesize + lower_x] \
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- sat[lower_y * sat_linesize + higher_x] \
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+ sat[lower_y * sat_linesize + lower_x]; \
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square_sum = square_sat[higher_y * sat_linesize + higher_x] \
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- square_sat[higher_y * sat_linesize + lower_x] \
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- square_sat[lower_y * sat_linesize + higher_x] \
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+ square_sat[lower_y * sat_linesize + lower_x]; \
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mean = sum / count; \
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var = (square_sum - sum * sum / count) / count; \
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dst[y * dst_linesize + x] = (sigma * mean + var * src[y * src_linesize + x]) / (sigma + var); \
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} \
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} \
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return 0; \
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}
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FILTER_SLICE(uint8_t, byte)
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FILTER_SLICE(uint16_t, word)
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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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YAEPContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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AVFrame *out;
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int plane;
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const int nb_threads = ff_filter_get_nb_threads(ctx);
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ThreadData td;
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if (av_frame_is_writable(in)) {
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out = in;
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} else {
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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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}
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for (plane = 0; plane < s->nb_planes; plane++) {
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if (!s->radius || !(s->planes & (1<<plane))) {
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if (out != in) {
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av_image_copy_plane(out->data[plane], out->linesize[plane],
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in->data[plane], in->linesize[plane],
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s->planewidth[plane] * ((s->depth + 7) / 8),
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s->planeheight[plane]);
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}
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continue;
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}
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td.width = s->planewidth[plane];
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td.height = s->planeheight[plane];
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td.src = in->data[plane];
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td.src_linesize = in->linesize[plane];
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ff_filter_execute(ctx, s->pre_calculate_row, &td, NULL,
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FFMIN(td.height, nb_threads));
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ff_filter_execute(ctx, pre_calculate_col, &td, NULL,
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FFMIN(td.width, nb_threads));
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td.dst = out->data[plane];
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td.dst_linesize = out->linesize[plane];
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ff_filter_execute(ctx, s->filter_slice, &td, NULL,
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FFMIN(td.height, nb_threads));
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}
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if (out != in)
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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 int config_input(AVFilterLink *inlink)
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{
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YAEPContext *s = inlink->dst->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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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->nb_planes = av_pix_fmt_count_planes(inlink->format);
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s->radius = FFMIN(s->radius, AV_CEIL_RSHIFT(FFMIN(inlink->w, inlink->h), 1));
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if (s->depth <= 8) {
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s->pre_calculate_row = pre_calculate_row_byte;
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s->filter_slice = filter_slice_byte;
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} else {
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s->pre_calculate_row = pre_calculate_row_word;
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s->filter_slice = filter_slice_word;
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}
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// padding one row on the top, and padding one col on the left, that is why + 1 below
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s->sat_linesize = inlink->w + 1;
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s->sat = av_calloc(inlink->h + 1, s->sat_linesize * sizeof(*s->sat));
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if (!s->sat)
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return AVERROR(ENOMEM);
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s->square_sat = av_calloc(inlink->h + 1, s->sat_linesize * sizeof(*s->square_sat));
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if (!s->square_sat)
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return AVERROR(ENOMEM);
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return 0;
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}
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static const AVFilterPad yaep_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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#define OFFSET(x) offsetof(YAEPContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption yaepblur_options[] = {
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{ "radius", "set window radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=3}, 0, INT_MAX, .flags=FLAGS },
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{ "r" , "set window radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=3}, 0, INT_MAX, .flags=FLAGS },
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{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=1}, 0, 0xF, .flags=FLAGS },
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{ "p", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=1}, 0, 0xF, .flags=FLAGS },
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{ "sigma", "set blur strength", OFFSET(sigma), AV_OPT_TYPE_INT, {.i64=128}, 1, INT_MAX, .flags=FLAGS },
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{ "s", "set blur strength", OFFSET(sigma), AV_OPT_TYPE_INT, {.i64=128}, 1, INT_MAX, .flags=FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(yaepblur);
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const AVFilter ff_vf_yaepblur = {
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.name = "yaepblur",
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.description = NULL_IF_CONFIG_SMALL("Yet another edge preserving blur filter."),
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.priv_size = sizeof(YAEPContext),
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.priv_class = &yaepblur_class,
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.uninit = uninit,
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FILTER_INPUTS(yaep_inputs),
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FILTER_OUTPUTS(ff_video_default_filterpad),
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FILTER_PIXFMTS_ARRAY(pix_fmts),
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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.process_command = ff_filter_process_command,
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};
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