mirror of
https://github.com/FFmpeg/FFmpeg.git
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b9c928a486
This flag allows distinguishing between filters that actually modify the data and those that only modify metadata or gather some stream information.
473 lines
16 KiB
C
473 lines
16 KiB
C
/*
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* Copyright (c) 2011 Roger Pau Monné <roger.pau@entel.upc.edu>
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* Copyright (c) 2011 Stefano Sabatini
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* Copyright (c) 2013 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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/**
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* @file
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* Calculate the PSNR between two input videos.
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*/
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#include "libavutil/avstring.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 "drawutils.h"
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#include "formats.h"
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#include "framesync.h"
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#include "internal.h"
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#include "psnr.h"
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#include "video.h"
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typedef struct PSNRContext {
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const AVClass *class;
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FFFrameSync fs;
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double mse, min_mse, max_mse, mse_comp[4];
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uint64_t nb_frames;
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FILE *stats_file;
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char *stats_file_str;
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int stats_version;
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int stats_header_written;
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int stats_add_max;
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int max[4], average_max;
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int is_rgb;
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uint8_t rgba_map[4];
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char comps[4];
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int nb_components;
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int nb_threads;
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int planewidth[4];
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int planeheight[4];
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double planeweight[4];
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uint64_t **score;
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PSNRDSPContext dsp;
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} PSNRContext;
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#define OFFSET(x) offsetof(PSNRContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption psnr_options[] = {
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{"stats_file", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
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{"f", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
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{"stats_version", "Set the format version for the stats file.", OFFSET(stats_version), AV_OPT_TYPE_INT, {.i64=1}, 1, 2, FLAGS },
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{"output_max", "Add raw stats (max values) to the output log.", OFFSET(stats_add_max), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{ NULL }
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};
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FRAMESYNC_DEFINE_CLASS(psnr, PSNRContext, fs);
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static inline unsigned pow_2(unsigned base)
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{
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return base*base;
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}
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static inline double get_psnr(double mse, uint64_t nb_frames, int max)
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{
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return 10.0 * log10(pow_2(max) / (mse / nb_frames));
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}
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static uint64_t sse_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
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{
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int j;
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unsigned m2 = 0;
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for (j = 0; j < outw; j++)
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m2 += pow_2(main_line[j] - ref_line[j]);
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return m2;
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}
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static uint64_t sse_line_16bit(const uint8_t *_main_line, const uint8_t *_ref_line, int outw)
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{
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int j;
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uint64_t m2 = 0;
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const uint16_t *main_line = (const uint16_t *) _main_line;
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const uint16_t *ref_line = (const uint16_t *) _ref_line;
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for (j = 0; j < outw; j++)
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m2 += pow_2(main_line[j] - ref_line[j]);
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return m2;
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}
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typedef struct ThreadData {
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const uint8_t *main_data[4];
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const uint8_t *ref_data[4];
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int main_linesize[4];
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int ref_linesize[4];
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int planewidth[4];
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int planeheight[4];
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uint64_t **score;
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int nb_components;
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PSNRDSPContext *dsp;
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} ThreadData;
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static
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int compute_images_mse(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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uint64_t *score = td->score[jobnr];
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for (int c = 0; c < td->nb_components; c++) {
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const int outw = td->planewidth[c];
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const int outh = td->planeheight[c];
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const int slice_start = (outh * jobnr) / nb_jobs;
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const int slice_end = (outh * (jobnr+1)) / nb_jobs;
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const int ref_linesize = td->ref_linesize[c];
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const int main_linesize = td->main_linesize[c];
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const uint8_t *main_line = td->main_data[c] + main_linesize * slice_start;
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const uint8_t *ref_line = td->ref_data[c] + ref_linesize * slice_start;
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uint64_t m = 0;
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for (int i = slice_start; i < slice_end; i++) {
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m += td->dsp->sse_line(main_line, ref_line, outw);
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ref_line += ref_linesize;
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main_line += main_linesize;
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}
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score[c] = m;
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}
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return 0;
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}
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static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
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{
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char value[128];
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snprintf(value, sizeof(value), "%f", d);
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if (comp) {
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char key2[128];
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snprintf(key2, sizeof(key2), "%s%c", key, comp);
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av_dict_set(metadata, key2, value, 0);
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} else {
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av_dict_set(metadata, key, value, 0);
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}
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}
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static int do_psnr(FFFrameSync *fs)
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{
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AVFilterContext *ctx = fs->parent;
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PSNRContext *s = ctx->priv;
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AVFrame *master, *ref;
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double comp_mse[4], mse = 0.;
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uint64_t comp_sum[4] = { 0 };
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AVDictionary **metadata;
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ThreadData td;
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int ret;
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ret = ff_framesync_dualinput_get(fs, &master, &ref);
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if (ret < 0)
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return ret;
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if (ctx->is_disabled || !ref)
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return ff_filter_frame(ctx->outputs[0], master);
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metadata = &master->metadata;
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td.nb_components = s->nb_components;
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td.dsp = &s->dsp;
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td.score = s->score;
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for (int c = 0; c < s->nb_components; c++) {
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td.main_data[c] = master->data[c];
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td.ref_data[c] = ref->data[c];
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td.main_linesize[c] = master->linesize[c];
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td.ref_linesize[c] = ref->linesize[c];
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td.planewidth[c] = s->planewidth[c];
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td.planeheight[c] = s->planeheight[c];
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}
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ff_filter_execute(ctx, compute_images_mse, &td, NULL,
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FFMIN(s->planeheight[1], s->nb_threads));
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for (int j = 0; j < s->nb_threads; j++) {
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for (int c = 0; c < s->nb_components; c++)
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comp_sum[c] += s->score[j][c];
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}
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for (int c = 0; c < s->nb_components; c++)
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comp_mse[c] = comp_sum[c] / ((double)s->planewidth[c] * s->planeheight[c]);
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for (int c = 0; c < s->nb_components; c++)
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mse += comp_mse[c] * s->planeweight[c];
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s->min_mse = FFMIN(s->min_mse, mse);
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s->max_mse = FFMAX(s->max_mse, mse);
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s->mse += mse;
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for (int j = 0; j < s->nb_components; j++)
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s->mse_comp[j] += comp_mse[j];
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s->nb_frames++;
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for (int j = 0; j < s->nb_components; j++) {
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int c = s->is_rgb ? s->rgba_map[j] : j;
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set_meta(metadata, "lavfi.psnr.mse.", s->comps[j], comp_mse[c]);
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set_meta(metadata, "lavfi.psnr.psnr.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c]));
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}
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set_meta(metadata, "lavfi.psnr.mse_avg", 0, mse);
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set_meta(metadata, "lavfi.psnr.psnr_avg", 0, get_psnr(mse, 1, s->average_max));
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if (s->stats_file) {
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if (s->stats_version == 2 && !s->stats_header_written) {
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fprintf(s->stats_file, "psnr_log_version:2 fields:n");
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fprintf(s->stats_file, ",mse_avg");
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for (int j = 0; j < s->nb_components; j++) {
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fprintf(s->stats_file, ",mse_%c", s->comps[j]);
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}
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fprintf(s->stats_file, ",psnr_avg");
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for (int j = 0; j < s->nb_components; j++) {
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fprintf(s->stats_file, ",psnr_%c", s->comps[j]);
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}
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if (s->stats_add_max) {
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fprintf(s->stats_file, ",max_avg");
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for (int j = 0; j < s->nb_components; j++) {
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fprintf(s->stats_file, ",max_%c", s->comps[j]);
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}
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}
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fprintf(s->stats_file, "\n");
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s->stats_header_written = 1;
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}
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fprintf(s->stats_file, "n:%"PRId64" mse_avg:%0.2f ", s->nb_frames, mse);
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for (int j = 0; j < s->nb_components; j++) {
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int c = s->is_rgb ? s->rgba_map[j] : j;
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fprintf(s->stats_file, "mse_%c:%0.2f ", s->comps[j], comp_mse[c]);
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}
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fprintf(s->stats_file, "psnr_avg:%0.2f ", get_psnr(mse, 1, s->average_max));
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for (int j = 0; j < s->nb_components; j++) {
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int c = s->is_rgb ? s->rgba_map[j] : j;
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fprintf(s->stats_file, "psnr_%c:%0.2f ", s->comps[j],
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get_psnr(comp_mse[c], 1, s->max[c]));
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}
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if (s->stats_version == 2 && s->stats_add_max) {
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fprintf(s->stats_file, "max_avg:%d ", s->average_max);
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for (int j = 0; j < s->nb_components; j++) {
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int c = s->is_rgb ? s->rgba_map[j] : j;
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fprintf(s->stats_file, "max_%c:%d ", s->comps[j], s->max[c]);
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}
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}
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fprintf(s->stats_file, "\n");
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}
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return ff_filter_frame(ctx->outputs[0], master);
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}
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static av_cold int init(AVFilterContext *ctx)
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{
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PSNRContext *s = ctx->priv;
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s->min_mse = +INFINITY;
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s->max_mse = -INFINITY;
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if (s->stats_file_str) {
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if (s->stats_version < 2 && s->stats_add_max) {
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av_log(ctx, AV_LOG_ERROR,
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"stats_add_max was specified but stats_version < 2.\n" );
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return AVERROR(EINVAL);
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}
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if (!strcmp(s->stats_file_str, "-")) {
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s->stats_file = stdout;
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} else {
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s->stats_file = fopen(s->stats_file_str, "w");
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if (!s->stats_file) {
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int err = AVERROR(errno);
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char buf[128];
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av_strerror(err, buf, sizeof(buf));
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av_log(ctx, AV_LOG_ERROR, "Could not open stats file %s: %s\n",
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s->stats_file_str, buf);
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return err;
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}
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}
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}
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s->fs.on_event = do_psnr;
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return 0;
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}
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static const enum AVPixelFormat pix_fmts[] = {
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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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#define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
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#define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
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#define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
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PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
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AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUVJ411P, 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_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_NONE
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};
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static int config_input_ref(AVFilterLink *inlink)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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AVFilterContext *ctx = inlink->dst;
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PSNRContext *s = ctx->priv;
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double average_max;
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unsigned sum;
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int j;
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s->nb_threads = ff_filter_get_nb_threads(ctx);
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s->nb_components = desc->nb_components;
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if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
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ctx->inputs[0]->h != ctx->inputs[1]->h) {
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av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
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return AVERROR(EINVAL);
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}
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s->max[0] = (1 << desc->comp[0].depth) - 1;
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s->max[1] = (1 << desc->comp[1].depth) - 1;
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s->max[2] = (1 << desc->comp[2].depth) - 1;
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s->max[3] = (1 << desc->comp[3].depth) - 1;
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s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
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s->comps[0] = s->is_rgb ? 'r' : 'y' ;
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s->comps[1] = s->is_rgb ? 'g' : 'u' ;
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s->comps[2] = s->is_rgb ? 'b' : 'v' ;
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s->comps[3] = 'a';
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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->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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sum = 0;
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for (j = 0; j < s->nb_components; j++)
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sum += s->planeheight[j] * s->planewidth[j];
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average_max = 0;
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for (j = 0; j < s->nb_components; j++) {
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s->planeweight[j] = (double) s->planeheight[j] * s->planewidth[j] / sum;
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average_max += s->max[j] * s->planeweight[j];
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}
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s->average_max = lrint(average_max);
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s->dsp.sse_line = desc->comp[0].depth > 8 ? sse_line_16bit : sse_line_8bit;
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if (ARCH_X86)
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ff_psnr_init_x86(&s->dsp, desc->comp[0].depth);
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s->score = av_calloc(s->nb_threads, sizeof(*s->score));
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if (!s->score)
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return AVERROR(ENOMEM);
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for (int t = 0; t < s->nb_threads; t++) {
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s->score[t] = av_calloc(s->nb_components, sizeof(*s->score[0]));
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if (!s->score[t])
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return AVERROR(ENOMEM);
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}
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return 0;
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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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PSNRContext *s = ctx->priv;
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AVFilterLink *mainlink = ctx->inputs[0];
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int ret;
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ret = ff_framesync_init_dualinput(&s->fs, ctx);
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if (ret < 0)
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return ret;
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outlink->w = mainlink->w;
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outlink->h = mainlink->h;
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outlink->time_base = mainlink->time_base;
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outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
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outlink->frame_rate = mainlink->frame_rate;
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if ((ret = ff_framesync_configure(&s->fs)) < 0)
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return ret;
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outlink->time_base = s->fs.time_base;
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if (av_cmp_q(mainlink->time_base, outlink->time_base) ||
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av_cmp_q(ctx->inputs[1]->time_base, outlink->time_base))
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av_log(ctx, AV_LOG_WARNING, "not matching timebases found between first input: %d/%d and second input %d/%d, results may be incorrect!\n",
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mainlink->time_base.num, mainlink->time_base.den,
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ctx->inputs[1]->time_base.num, ctx->inputs[1]->time_base.den);
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return 0;
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}
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static int activate(AVFilterContext *ctx)
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{
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PSNRContext *s = ctx->priv;
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return ff_framesync_activate(&s->fs);
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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PSNRContext *s = ctx->priv;
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if (s->nb_frames > 0) {
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int j;
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char buf[256];
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buf[0] = 0;
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for (j = 0; j < s->nb_components; j++) {
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int c = s->is_rgb ? s->rgba_map[j] : j;
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av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j],
|
|
get_psnr(s->mse_comp[c], s->nb_frames, s->max[c]));
|
|
}
|
|
av_log(ctx, AV_LOG_INFO, "PSNR%s average:%f min:%f max:%f\n",
|
|
buf,
|
|
get_psnr(s->mse, s->nb_frames, s->average_max),
|
|
get_psnr(s->max_mse, 1, s->average_max),
|
|
get_psnr(s->min_mse, 1, s->average_max));
|
|
}
|
|
|
|
ff_framesync_uninit(&s->fs);
|
|
for (int t = 0; t < s->nb_threads && s->score; t++)
|
|
av_freep(&s->score[t]);
|
|
av_freep(&s->score);
|
|
|
|
if (s->stats_file && s->stats_file != stdout)
|
|
fclose(s->stats_file);
|
|
}
|
|
|
|
static const AVFilterPad psnr_inputs[] = {
|
|
{
|
|
.name = "main",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},{
|
|
.name = "reference",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_input_ref,
|
|
},
|
|
};
|
|
|
|
static const AVFilterPad psnr_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_output,
|
|
},
|
|
};
|
|
|
|
const AVFilter ff_vf_psnr = {
|
|
.name = "psnr",
|
|
.description = NULL_IF_CONFIG_SMALL("Calculate the PSNR between two video streams."),
|
|
.preinit = psnr_framesync_preinit,
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.activate = activate,
|
|
.priv_size = sizeof(PSNRContext),
|
|
.priv_class = &psnr_class,
|
|
FILTER_INPUTS(psnr_inputs),
|
|
FILTER_OUTPUTS(psnr_outputs),
|
|
FILTER_PIXFMTS_ARRAY(pix_fmts),
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
|
|
AVFILTER_FLAG_SLICE_THREADS |
|
|
AVFILTER_FLAG_METADATA_ONLY,
|
|
};
|