Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  1. /*
  2.  * Copyright (c) 2011 Roger Pau Monné <roger.pau@entel.upc.edu>
  3.  * Copyright (c) 2011 Stefano Sabatini
  4.  * Copyright (c) 2013 Paul B Mahol
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. /**
  24.  * @file
  25.  * Caculate the PSNR between two input videos.
  26.  */
  27.  
  28. #include "libavutil/opt.h"
  29. #include "libavutil/pixdesc.h"
  30. #include "avfilter.h"
  31. #include "dualinput.h"
  32. #include "drawutils.h"
  33. #include "formats.h"
  34. #include "internal.h"
  35. #include "video.h"
  36.  
  37. typedef struct PSNRContext {
  38.     const AVClass *class;
  39.     FFDualInputContext dinput;
  40.     double mse, min_mse, max_mse;
  41.     uint64_t nb_frames;
  42.     FILE *stats_file;
  43.     char *stats_file_str;
  44.     int max[4], average_max;
  45.     int is_rgb;
  46.     uint8_t rgba_map[4];
  47.     char comps[4];
  48.     int nb_components;
  49.     int planewidth[4];
  50.     int planeheight[4];
  51.  
  52.     void (*compute_mse)(struct PSNRContext *s,
  53.                         const uint8_t *m[4], const int ml[4],
  54.                         const uint8_t *r[4], const int rl[4],
  55.                         int w, int h, double mse[4]);
  56. } PSNRContext;
  57.  
  58. #define OFFSET(x) offsetof(PSNRContext, x)
  59. #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
  60.  
  61. static const AVOption psnr_options[] = {
  62.     {"stats_file", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
  63.     {"f",          "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
  64.     { NULL }
  65. };
  66.  
  67. AVFILTER_DEFINE_CLASS(psnr);
  68.  
  69. static inline unsigned pow2(unsigned base)
  70. {
  71.     return base*base;
  72. }
  73.  
  74. static inline double get_psnr(double mse, uint64_t nb_frames, int max)
  75. {
  76.     return 10.0 * log(pow2(max) / (mse / nb_frames)) / log(10.0);
  77. }
  78.  
  79. static inline
  80. void compute_images_mse(PSNRContext *s,
  81.                         const uint8_t *main_data[4], const int main_linesizes[4],
  82.                         const uint8_t *ref_data[4], const int ref_linesizes[4],
  83.                         int w, int h, double mse[4])
  84. {
  85.     int i, c, j;
  86.  
  87.     for (c = 0; c < s->nb_components; c++) {
  88.         const int outw = s->planewidth[c];
  89.         const int outh = s->planeheight[c];
  90.         const uint8_t *main_line = main_data[c];
  91.         const uint8_t *ref_line = ref_data[c];
  92.         const int ref_linesize = ref_linesizes[c];
  93.         const int main_linesize = main_linesizes[c];
  94.         uint64_t m = 0;
  95.  
  96.         for (i = 0; i < outh; i++) {
  97.             int m2 = 0;
  98.             for (j = 0; j < outw; j++)
  99.                 m2 += pow2(main_line[j] - ref_line[j]);
  100.             m += m2;
  101.             ref_line += ref_linesize;
  102.             main_line += main_linesize;
  103.         }
  104.         mse[c] = m / (double)(outw * outh);
  105.     }
  106. }
  107.  
  108. static inline
  109. void compute_images_mse_16bit(PSNRContext *s,
  110.                         const uint8_t *main_data[4], const int main_linesizes[4],
  111.                         const uint8_t *ref_data[4], const int ref_linesizes[4],
  112.                         int w, int h, double mse[4])
  113. {
  114.     int i, c, j;
  115.  
  116.     for (c = 0; c < s->nb_components; c++) {
  117.         const int outw = s->planewidth[c];
  118.         const int outh = s->planeheight[c];
  119.         const uint16_t *main_line = (uint16_t *)main_data[c];
  120.         const uint16_t *ref_line = (uint16_t *)ref_data[c];
  121.         const int ref_linesize = ref_linesizes[c] / 2;
  122.         const int main_linesize = main_linesizes[c] / 2;
  123.         uint64_t m = 0;
  124.  
  125.         for (i = 0; i < outh; i++) {
  126.             for (j = 0; j < outw; j++)
  127.                 m += pow2(main_line[j] - ref_line[j]);
  128.             ref_line += ref_linesize;
  129.             main_line += main_linesize;
  130.         }
  131.         mse[c] = m / (double)(outw * outh);
  132.     }
  133. }
  134.  
  135. static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
  136. {
  137.     char value[128];
  138.     snprintf(value, sizeof(value), "%0.2f", d);
  139.     if (comp) {
  140.         char key2[128];
  141.         snprintf(key2, sizeof(key2), "%s%c", key, comp);
  142.         av_dict_set(metadata, key2, value, 0);
  143.     } else {
  144.         av_dict_set(metadata, key, value, 0);
  145.     }
  146. }
  147.  
  148. static AVFrame *do_psnr(AVFilterContext *ctx, AVFrame *main,
  149.                         const AVFrame *ref)
  150. {
  151.     PSNRContext *s = ctx->priv;
  152.     double comp_mse[4], mse = 0;
  153.     int j, c;
  154.     AVDictionary **metadata = avpriv_frame_get_metadatap(main);
  155.  
  156.     s->compute_mse(s, (const uint8_t **)main->data, main->linesize,
  157.                       (const uint8_t **)ref->data, ref->linesize,
  158.                        main->width, main->height, comp_mse);
  159.  
  160.     for (j = 0; j < s->nb_components; j++)
  161.         mse += comp_mse[j];
  162.     mse /= s->nb_components;
  163.  
  164.     s->min_mse = FFMIN(s->min_mse, mse);
  165.     s->max_mse = FFMAX(s->max_mse, mse);
  166.  
  167.     s->mse += mse;
  168.     s->nb_frames++;
  169.  
  170.     for (j = 0; j < s->nb_components; j++) {
  171.         c = s->is_rgb ? s->rgba_map[j] : j;
  172.         set_meta(metadata, "lavfi.psnr.mse.", s->comps[j], comp_mse[c]);
  173.         set_meta(metadata, "lavfi.psnr.mse_avg", 0, mse);
  174.         set_meta(metadata, "lavfi.psnr.psnr.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c]));
  175.         set_meta(metadata, "lavfi.psnr.psnr_avg", 0, get_psnr(mse, 1, s->average_max));
  176.     }
  177.  
  178.     if (s->stats_file) {
  179.         fprintf(s->stats_file, "n:%"PRId64" mse_avg:%0.2f ", s->nb_frames, mse);
  180.         for (j = 0; j < s->nb_components; j++) {
  181.             c = s->is_rgb ? s->rgba_map[j] : j;
  182.             fprintf(s->stats_file, "mse_%c:%0.2f ", s->comps[j], comp_mse[c]);
  183.         }
  184.         for (j = 0; j < s->nb_components; j++) {
  185.             c = s->is_rgb ? s->rgba_map[j] : j;
  186.             fprintf(s->stats_file, "psnr_%c:%0.2f ", s->comps[j],
  187.                     get_psnr(comp_mse[c], 1, s->max[c]));
  188.         }
  189.         fprintf(s->stats_file, "\n");
  190.     }
  191.  
  192.     return main;
  193. }
  194.  
  195. static av_cold int init(AVFilterContext *ctx)
  196. {
  197.     PSNRContext *s = ctx->priv;
  198.  
  199.     s->min_mse = +INFINITY;
  200.     s->max_mse = -INFINITY;
  201.  
  202.     if (s->stats_file_str) {
  203.         s->stats_file = fopen(s->stats_file_str, "w");
  204.         if (!s->stats_file) {
  205.             int err = AVERROR(errno);
  206.             char buf[128];
  207.             av_strerror(err, buf, sizeof(buf));
  208.             av_log(ctx, AV_LOG_ERROR, "Could not open stats file %s: %s\n",
  209.                    s->stats_file_str, buf);
  210.             return err;
  211.         }
  212.     }
  213.  
  214.     s->dinput.process = do_psnr;
  215.     return 0;
  216. }
  217.  
  218. static int query_formats(AVFilterContext *ctx)
  219. {
  220.     static const enum PixelFormat pix_fmts[] = {
  221.         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
  222. #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf,  AV_PIX_FMT_YUV422##suf,  AV_PIX_FMT_YUV444##suf
  223. #define PF_ALPHA(suf)   AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
  224. #define PF(suf)         PF_NOALPHA(suf), PF_ALPHA(suf)
  225.         PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
  226.         AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
  227.         AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
  228.         AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
  229.         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
  230.         AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
  231.         AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
  232.         AV_PIX_FMT_NONE
  233.     };
  234.  
  235.     ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
  236.     return 0;
  237. }
  238.  
  239. static int config_input_ref(AVFilterLink *inlink)
  240. {
  241.     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
  242.     AVFilterContext *ctx  = inlink->dst;
  243.     PSNRContext *s = ctx->priv;
  244.     int j;
  245.  
  246.     s->nb_components = desc->nb_components;
  247.     if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
  248.         ctx->inputs[0]->h != ctx->inputs[1]->h) {
  249.         av_log(ctx, AV_LOG_ERROR, "Width and heigth of input videos must be same.\n");
  250.         return AVERROR(EINVAL);
  251.     }
  252.     if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
  253.         av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n");
  254.         return AVERROR(EINVAL);
  255.     }
  256.  
  257.     switch (inlink->format) {
  258.     case AV_PIX_FMT_GRAY8:
  259.     case AV_PIX_FMT_GRAY16:
  260.     case AV_PIX_FMT_GBRP:
  261.     case AV_PIX_FMT_GBRP9:
  262.     case AV_PIX_FMT_GBRP10:
  263.     case AV_PIX_FMT_GBRP12:
  264.     case AV_PIX_FMT_GBRP14:
  265.     case AV_PIX_FMT_GBRP16:
  266.     case AV_PIX_FMT_GBRAP:
  267.     case AV_PIX_FMT_GBRAP16:
  268.     case AV_PIX_FMT_YUVJ411P:
  269.     case AV_PIX_FMT_YUVJ420P:
  270.     case AV_PIX_FMT_YUVJ422P:
  271.     case AV_PIX_FMT_YUVJ440P:
  272.     case AV_PIX_FMT_YUVJ444P:
  273.         s->max[0] = (1 << (desc->comp[0].depth_minus1 + 1)) - 1;
  274.         s->max[1] = (1 << (desc->comp[1].depth_minus1 + 1)) - 1;
  275.         s->max[2] = (1 << (desc->comp[2].depth_minus1 + 1)) - 1;
  276.         s->max[3] = (1 << (desc->comp[3].depth_minus1 + 1)) - 1;
  277.         break;
  278.     default:
  279.         s->max[0] = 235 * (1 << (desc->comp[0].depth_minus1 - 7));
  280.         s->max[1] = 240 * (1 << (desc->comp[1].depth_minus1 - 7));
  281.         s->max[2] = 240 * (1 << (desc->comp[2].depth_minus1 - 7));
  282.         s->max[3] = (1 << (desc->comp[3].depth_minus1 + 1)) - 1;
  283.     }
  284.  
  285.     s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
  286.     s->comps[0] = s->is_rgb ? 'r' : 'y' ;
  287.     s->comps[1] = s->is_rgb ? 'g' : 'u' ;
  288.     s->comps[2] = s->is_rgb ? 'b' : 'v' ;
  289.     s->comps[3] = 'a';
  290.  
  291.     for (j = 0; j < s->nb_components; j++)
  292.         s->average_max += s->max[j];
  293.     s->average_max /= s->nb_components;
  294.  
  295.     s->planeheight[1] = s->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
  296.     s->planeheight[0] = s->planeheight[3] = inlink->h;
  297.     s->planewidth[1]  = s->planewidth[2]  = FF_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
  298.     s->planewidth[0]  = s->planewidth[3]  = inlink->w;
  299.  
  300.     s->compute_mse = desc->comp[0].depth_minus1 > 7 ? compute_images_mse_16bit : compute_images_mse;
  301.  
  302.     return 0;
  303. }
  304.  
  305. static int config_output(AVFilterLink *outlink)
  306. {
  307.     AVFilterContext *ctx = outlink->src;
  308.     PSNRContext *s = ctx->priv;
  309.     AVFilterLink *mainlink = ctx->inputs[0];
  310.     int ret;
  311.  
  312.     outlink->w = mainlink->w;
  313.     outlink->h = mainlink->h;
  314.     outlink->time_base = mainlink->time_base;
  315.     outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
  316.     outlink->frame_rate = mainlink->frame_rate;
  317.     if ((ret = ff_dualinput_init(ctx, &s->dinput)) < 0)
  318.         return ret;
  319.  
  320.     return 0;
  321. }
  322.  
  323. static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
  324. {
  325.     PSNRContext *s = inlink->dst->priv;
  326.     return ff_dualinput_filter_frame(&s->dinput, inlink, inpicref);
  327. }
  328.  
  329. static int request_frame(AVFilterLink *outlink)
  330. {
  331.     PSNRContext *s = outlink->src->priv;
  332.     return ff_dualinput_request_frame(&s->dinput, outlink);
  333. }
  334.  
  335. static av_cold void uninit(AVFilterContext *ctx)
  336. {
  337.     PSNRContext *s = ctx->priv;
  338.  
  339.     if (s->nb_frames > 0) {
  340.         av_log(ctx, AV_LOG_INFO, "PSNR average:%0.2f min:%0.2f max:%0.2f\n",
  341.                get_psnr(s->mse, s->nb_frames, s->average_max),
  342.                get_psnr(s->max_mse, 1, s->average_max),
  343.                get_psnr(s->min_mse, 1, s->average_max));
  344.     }
  345.  
  346.     ff_dualinput_uninit(&s->dinput);
  347.  
  348.     if (s->stats_file)
  349.         fclose(s->stats_file);
  350. }
  351.  
  352. static const AVFilterPad psnr_inputs[] = {
  353.     {
  354.         .name         = "main",
  355.         .type         = AVMEDIA_TYPE_VIDEO,
  356.         .filter_frame = filter_frame,
  357.     },{
  358.         .name         = "reference",
  359.         .type         = AVMEDIA_TYPE_VIDEO,
  360.         .filter_frame = filter_frame,
  361.         .config_props = config_input_ref,
  362.     },
  363.     { NULL }
  364. };
  365.  
  366. static const AVFilterPad psnr_outputs[] = {
  367.     {
  368.         .name          = "default",
  369.         .type          = AVMEDIA_TYPE_VIDEO,
  370.         .config_props  = config_output,
  371.         .request_frame = request_frame,
  372.     },
  373.     { NULL }
  374. };
  375.  
  376. AVFilter avfilter_vf_psnr = {
  377.     .name          = "psnr",
  378.     .description   = NULL_IF_CONFIG_SMALL("Calculate the PSNR between two video streams."),
  379.     .init          = init,
  380.     .uninit        = uninit,
  381.     .query_formats = query_formats,
  382.     .priv_size     = sizeof(PSNRContext),
  383.     .priv_class    = &psnr_class,
  384.     .inputs        = psnr_inputs,
  385.     .outputs       = psnr_outputs,
  386. };
  387.