/* * Copyright (c) 2011 Roger Pau Monné <roger.pau@entel.upc.edu> * Copyright (c) 2011 Stefano Sabatini * Copyright (c) 2013 Paul B Mahol * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * Caculate the PSNR between two input videos. */ #include "libavutil/avstring.h" #include "libavutil/opt.h" #include "libavutil/pixdesc.h" #include "avfilter.h" #include "drawutils.h" #include "formats.h" #include "framesync.h" #include "internal.h" #include "psnr.h" #include "video.h" typedef struct PSNRContext { const AVClass *class; FFFrameSync fs; double mse, min_mse, max_mse, mse_comp[4]; uint64_t nb_frames; FILE *stats_file; char *stats_file_str; int stats_version; int stats_header_written; int stats_add_max; int max[4], average_max; int is_rgb; uint8_t rgba_map[4]; char comps[4]; int nb_components; int planewidth[4]; int planeheight[4]; double planeweight[4]; PSNRDSPContext dsp; } PSNRContext; #define OFFSET(x) offsetof(PSNRContext, x) #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM static const AVOption psnr_options[] = { {"stats_file", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS }, {"f", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS }, {"stats_version", "Set the format version for the stats file.", OFFSET(stats_version), AV_OPT_TYPE_INT, {.i64=1}, 1, 2, FLAGS }, {"output_max", "Add raw stats (max values) to the output log.", OFFSET(stats_add_max), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, { NULL } }; FRAMESYNC_DEFINE_CLASS(psnr, PSNRContext, fs); static inline unsigned pow_2(unsigned base) { return base*base; } static inline double get_psnr(double mse, uint64_t nb_frames, int max) { return 10.0 * log10(pow_2(max) / (mse / nb_frames)); } static uint64_t sse_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw) { int j; unsigned m2 = 0; for (j = 0; j < outw; j++) m2 += pow_2(main_line[j] - ref_line[j]); return m2; } static uint64_t sse_line_16bit(const uint8_t *_main_line, const uint8_t *_ref_line, int outw) { int j; uint64_t m2 = 0; const uint16_t *main_line = (const uint16_t *) _main_line; const uint16_t *ref_line = (const uint16_t *) _ref_line; for (j = 0; j < outw; j++) m2 += pow_2(main_line[j] - ref_line[j]); return m2; } static inline void compute_images_mse(PSNRContext *s, const uint8_t *main_data[4], const int main_linesizes[4], const uint8_t *ref_data[4], const int ref_linesizes[4], int w, int h, double mse[4]) { int i, c; for (c = 0; c < s->nb_components; c++) { const int outw = s->planewidth[c]; const int outh = s->planeheight[c]; const uint8_t *main_line = main_data[c]; const uint8_t *ref_line = ref_data[c]; const int ref_linesize = ref_linesizes[c]; const int main_linesize = main_linesizes[c]; uint64_t m = 0; for (i = 0; i < outh; i++) { m += s->dsp.sse_line(main_line, ref_line, outw); ref_line += ref_linesize; main_line += main_linesize; } mse[c] = m / (double)(outw * outh); } } static void set_meta(AVDictionary **metadata, const char *key, char comp, float d) { char value[128]; snprintf(value, sizeof(value), "%0.2f", d); if (comp) { char key2[128]; snprintf(key2, sizeof(key2), "%s%c", key, comp); av_dict_set(metadata, key2, value, 0); } else { av_dict_set(metadata, key, value, 0); } } static int do_psnr(FFFrameSync *fs) { AVFilterContext *ctx = fs->parent; PSNRContext *s = ctx->priv; AVFrame *master, *ref; double comp_mse[4], mse = 0; int ret, j, c; AVDictionary **metadata; ret = ff_framesync_dualinput_get(fs, &master, &ref); if (ret < 0) return ret; if (!ref) return ff_filter_frame(ctx->outputs[0], master); metadata = &master->metadata; compute_images_mse(s, (const uint8_t **)master->data, master->linesize, (const uint8_t **)ref->data, ref->linesize, master->width, master->height, comp_mse); for (j = 0; j < s->nb_components; j++) mse += comp_mse[j] * s->planeweight[j]; s->min_mse = FFMIN(s->min_mse, mse); s->max_mse = FFMAX(s->max_mse, mse); s->mse += mse; for (j = 0; j < s->nb_components; j++) s->mse_comp[j] += comp_mse[j]; s->nb_frames++; for (j = 0; j < s->nb_components; j++) { c = s->is_rgb ? s->rgba_map[j] : j; set_meta(metadata, "lavfi.psnr.mse.", s->comps[j], comp_mse[c]); set_meta(metadata, "lavfi.psnr.psnr.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c])); } set_meta(metadata, "lavfi.psnr.mse_avg", 0, mse); set_meta(metadata, "lavfi.psnr.psnr_avg", 0, get_psnr(mse, 1, s->average_max)); if (s->stats_file) { if (s->stats_version == 2 && !s->stats_header_written) { fprintf(s->stats_file, "psnr_log_version:2 fields:n"); fprintf(s->stats_file, ",mse_avg"); for (j = 0; j < s->nb_components; j++) { fprintf(s->stats_file, ",mse_%c", s->comps[j]); } fprintf(s->stats_file, ",psnr_avg"); for (j = 0; j < s->nb_components; j++) { fprintf(s->stats_file, ",psnr_%c", s->comps[j]); } if (s->stats_add_max) { fprintf(s->stats_file, ",max_avg"); for (j = 0; j < s->nb_components; j++) { fprintf(s->stats_file, ",max_%c", s->comps[j]); } } fprintf(s->stats_file, "\n"); s->stats_header_written = 1; } fprintf(s->stats_file, "n:%"PRId64" mse_avg:%0.2f ", s->nb_frames, mse); for (j = 0; j < s->nb_components; j++) { c = s->is_rgb ? s->rgba_map[j] : j; fprintf(s->stats_file, "mse_%c:%0.2f ", s->comps[j], comp_mse[c]); } fprintf(s->stats_file, "psnr_avg:%0.2f ", get_psnr(mse, 1, s->average_max)); for (j = 0; j < s->nb_components; j++) { c = s->is_rgb ? s->rgba_map[j] : j; fprintf(s->stats_file, "psnr_%c:%0.2f ", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c])); } if (s->stats_version == 2 && s->stats_add_max) { fprintf(s->stats_file, "max_avg:%d ", s->average_max); for (j = 0; j < s->nb_components; j++) { c = s->is_rgb ? s->rgba_map[j] : j; fprintf(s->stats_file, "max_%c:%d ", s->comps[j], s->max[c]); } } fprintf(s->stats_file, "\n"); } return ff_filter_frame(ctx->outputs[0], master); } static av_cold int init(AVFilterContext *ctx) { PSNRContext *s = ctx->priv; s->min_mse = +INFINITY; s->max_mse = -INFINITY; if (s->stats_file_str) { if (s->stats_version < 2 && s->stats_add_max) { av_log(ctx, AV_LOG_ERROR, "stats_add_max was specified but stats_version < 2.\n" ); return AVERROR(EINVAL); } if (!strcmp(s->stats_file_str, "-")) { s->stats_file = stdout; } else { s->stats_file = fopen(s->stats_file_str, "w"); if (!s->stats_file) { int err = AVERROR(errno); char buf[128]; av_strerror(err, buf, sizeof(buf)); av_log(ctx, AV_LOG_ERROR, "Could not open stats file %s: %s\n", s->stats_file_str, buf); return err; } } } s->fs.on_event = do_psnr; return 0; } static int query_formats(AVFilterContext *ctx) { static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16, #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf #define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf #define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf) PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16), AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_NONE }; AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); if (!fmts_list) return AVERROR(ENOMEM); return ff_set_common_formats(ctx, fmts_list); } static int config_input_ref(AVFilterLink *inlink) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); AVFilterContext *ctx = inlink->dst; PSNRContext *s = ctx->priv; double average_max; unsigned sum; int j; s->nb_components = desc->nb_components; if (ctx->inputs[0]->w != ctx->inputs[1]->w || ctx->inputs[0]->h != ctx->inputs[1]->h) { av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n"); return AVERROR(EINVAL); } if (ctx->inputs[0]->format != ctx->inputs[1]->format) { av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n"); return AVERROR(EINVAL); } s->max[0] = (1 << desc->comp[0].depth) - 1; s->max[1] = (1 << desc->comp[1].depth) - 1; s->max[2] = (1 << desc->comp[2].depth) - 1; s->max[3] = (1 << desc->comp[3].depth) - 1; s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0; s->comps[0] = s->is_rgb ? 'r' : 'y' ; s->comps[1] = s->is_rgb ? 'g' : 'u' ; s->comps[2] = s->is_rgb ? 'b' : 'v' ; s->comps[3] = 'a'; s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); s->planeheight[0] = s->planeheight[3] = inlink->h; s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); s->planewidth[0] = s->planewidth[3] = inlink->w; sum = 0; for (j = 0; j < s->nb_components; j++) sum += s->planeheight[j] * s->planewidth[j]; average_max = 0; for (j = 0; j < s->nb_components; j++) { s->planeweight[j] = (double) s->planeheight[j] * s->planewidth[j] / sum; average_max += s->max[j] * s->planeweight[j]; } s->average_max = lrint(average_max); s->dsp.sse_line = desc->comp[0].depth > 8 ? sse_line_16bit : sse_line_8bit; if (ARCH_X86) ff_psnr_init_x86(&s->dsp, desc->comp[0].depth); return 0; } static int config_output(AVFilterLink *outlink) { AVFilterContext *ctx = outlink->src; PSNRContext *s = ctx->priv; AVFilterLink *mainlink = ctx->inputs[0]; int ret; ret = ff_framesync_init_dualinput(&s->fs, ctx); if (ret < 0) return ret; outlink->w = mainlink->w; outlink->h = mainlink->h; outlink->time_base = mainlink->time_base; outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio; outlink->frame_rate = mainlink->frame_rate; if ((ret = ff_framesync_configure(&s->fs)) < 0) return ret; return 0; } static int activate(AVFilterContext *ctx) { PSNRContext *s = ctx->priv; return ff_framesync_activate(&s->fs); } static av_cold void uninit(AVFilterContext *ctx) { PSNRContext *s = ctx->priv; if (s->nb_frames > 0) { int j; char buf[256]; buf[0] = 0; for (j = 0; j < s->nb_components; j++) { int c = s->is_rgb ? s->rgba_map[j] : j; 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); 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, }, { NULL } }; static const AVFilterPad psnr_outputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .config_props = config_output, }, { NULL } }; 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, .query_formats = query_formats, .activate = activate, .priv_size = sizeof(PSNRContext), .priv_class = &psnr_class, .inputs = psnr_inputs, .outputs = psnr_outputs, };