325 lines
9.9 KiB
C
325 lines
9.9 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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* Caculate the PSNR between two input videos.
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*/
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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 "dualinput.h"
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#include "drawutils.h"
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#include "formats.h"
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#include "internal.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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FFDualInputContext dinput;
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double mse, min_mse, max_mse;
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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 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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const AVPixFmtDescriptor *desc;
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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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{ NULL },
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};
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AVFILTER_DEFINE_CLASS(psnr);
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static inline int pow2(int 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 * log(pow2(max) / (mse / nb_frames)) / log(10.0);
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}
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static inline
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void compute_images_mse(const uint8_t *main_data[4], const int main_linesizes[4],
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const uint8_t *ref_data[4], const int ref_linesizes[4],
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int w, int h, const AVPixFmtDescriptor *desc,
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double mse[4])
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{
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int i, c, j;
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for (c = 0; c < desc->nb_components; c++) {
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int hsub = c == 1 || c == 2 ? desc->log2_chroma_w : 0;
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int vsub = c == 1 || c == 2 ? desc->log2_chroma_h : 0;
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const int outw = FF_CEIL_RSHIFT(w, hsub);
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const int outh = FF_CEIL_RSHIFT(h, vsub);
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const uint8_t *main_line = main_data[c];
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const uint8_t *ref_line = ref_data[c];
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const int ref_linesize = ref_linesizes[c];
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const int main_linesize = main_linesizes[c];
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int m = 0;
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for (i = 0; i < outh; i++) {
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for (j = 0; j < outw; j++)
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m += pow2(main_line[j] - ref_line[j]);
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ref_line += ref_linesize;
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main_line += main_linesize;
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}
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mse[c] = m / (outw * outh);
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}
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}
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#define SET_META(key, comp, value) \
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snprintf(buf, sizeof(buf), "%0.2f", value); \
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av_dict_set(metadata, #key #comp, buf, 0); \
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static AVFrame *do_psnr(AVFilterContext *ctx, AVFrame *main,
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const AVFrame *ref)
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{
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PSNRContext *s = ctx->priv;
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double comp_mse[4], mse = 0;
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char buf[32];
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int j, c;
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AVDictionary **metadata = avpriv_frame_get_metadatap(main);
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compute_images_mse((const uint8_t **)main->data, main->linesize,
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(const uint8_t **)ref->data, ref->linesize,
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main->width, main->height, s->desc, comp_mse);
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for (j = 0; j < s->desc->nb_components; j++)
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mse += comp_mse[j];
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mse /= s->desc->nb_components;
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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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s->nb_frames++;
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for (j = 0; j < s->desc->nb_components; j++) {
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c = s->is_rgb ? s->rgba_map[j] : j;
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SET_META("lavfi.psnr.mse.", s->comps[j], comp_mse[c]);
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SET_META("lavfi.psnr.mse_avg", "", mse);
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SET_META("lavfi.psnr.s.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c]));
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SET_META("lavfi.psnr.s_avg", "", get_psnr(mse, 1, s->average_max));
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}
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if (s->stats_file) {
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fprintf(s->stats_file, "n:%"PRId64" mse_avg:%0.2f ", s->nb_frames, mse);
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for (j = 0; j < s->desc->nb_components; j++) {
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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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for (j = 0; j < s->desc->nb_components; j++) {
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c = s->is_rgb ? s->rgba_map[j] : j;
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fprintf(s->stats_file, "s%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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fprintf(s->stats_file, "\n");
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}
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return main;
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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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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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s->dinput.process = do_psnr;
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return 0;
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}
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum PixelFormat pix_fmts[] = {
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AV_PIX_FMT_GRAY8,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P,
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,
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AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
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AV_PIX_FMT_NONE
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};
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ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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return 0;
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}
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static int config_input_ref(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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PSNRContext *s = ctx->priv;
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int j;
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s->desc = av_pix_fmt_desc_get(inlink->format);
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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 heigth of input videos must be same.\n");
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return AVERROR(EINVAL);
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}
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if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
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av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n");
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return AVERROR(EINVAL);
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}
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switch (inlink->format) {
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case AV_PIX_FMT_YUV410P:
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case AV_PIX_FMT_YUV411P:
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case AV_PIX_FMT_YUV420P:
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case AV_PIX_FMT_YUV422P:
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case AV_PIX_FMT_YUV440P:
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case AV_PIX_FMT_YUV444P:
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case AV_PIX_FMT_YUVA420P:
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case AV_PIX_FMT_YUVA422P:
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case AV_PIX_FMT_YUVA444P:
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s->max[0] = 235;
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s->max[3] = 255;
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s->max[1] = s->max[2] = 240;
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break;
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default:
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s->max[0] = s->max[1] = s->max[2] = s->max[3] = 255;
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}
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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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for (j = 0; j < s->desc->nb_components; j++)
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s->average_max += s->max[j];
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s->average_max /= s->desc->nb_components;
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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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AVFilterLink *mainlink = ctx->inputs[0];
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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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return 0;
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}
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static int filter_frame_main(AVFilterLink *inlink, AVFrame *inpicref)
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{
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PSNRContext *s = inlink->dst->priv;
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return ff_dualinput_filter_frame_main(&s->dinput, inlink, inpicref);
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}
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static int filter_frame_ref(AVFilterLink *inlink, AVFrame *inpicref)
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{
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PSNRContext *s = inlink->dst->priv;
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return ff_dualinput_filter_frame_second(&s->dinput, inlink, inpicref);
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}
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static int request_frame(AVFilterLink *outlink)
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{
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PSNRContext *s = outlink->src->priv;
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return ff_dualinput_request_frame(&s->dinput, outlink);
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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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av_log(ctx, AV_LOG_INFO, "PSNR average:%0.2f min:%0.2f max:%0.2f\n",
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get_psnr(s->mse, s->nb_frames, s->average_max),
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get_psnr(s->max_mse, 1, s->average_max),
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get_psnr(s->min_mse, 1, s->average_max));
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}
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ff_dualinput_uninit(&s->dinput);
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if (s->stats_file)
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fclose(s->stats_file);
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}
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static const AVFilterPad psnr_inputs[] = {
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{
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.name = "main",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame_main,
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},{
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.name = "reference",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame_ref,
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.config_props = config_input_ref,
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},
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{ NULL }
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};
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static const AVFilterPad psnr_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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.request_frame = request_frame,
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},
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{ NULL }
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};
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AVFilter avfilter_vf_psnr = {
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.name = "psnr",
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.description = NULL_IF_CONFIG_SMALL("Calculate the PSNR between two video streams."),
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.init = init,
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.uninit = uninit,
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.query_formats = query_formats,
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.priv_size = sizeof(PSNRContext),
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.priv_class = &psnr_class,
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.inputs = psnr_inputs,
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.outputs = psnr_outputs,
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};
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