LCOV - code coverage report
Current view: top level - libavfilter - vf_psnr.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 129 185 69.7 %
Date: 2017-12-12 03:56:30 Functions: 13 16 81.2 %

          Line data    Source code
       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/avstring.h"
      29             : #include "libavutil/opt.h"
      30             : #include "libavutil/pixdesc.h"
      31             : #include "avfilter.h"
      32             : #include "drawutils.h"
      33             : #include "formats.h"
      34             : #include "framesync.h"
      35             : #include "internal.h"
      36             : #include "psnr.h"
      37             : #include "video.h"
      38             : 
      39             : typedef struct PSNRContext {
      40             :     const AVClass *class;
      41             :     FFFrameSync fs;
      42             :     double mse, min_mse, max_mse, mse_comp[4];
      43             :     uint64_t nb_frames;
      44             :     FILE *stats_file;
      45             :     char *stats_file_str;
      46             :     int stats_version;
      47             :     int stats_header_written;
      48             :     int stats_add_max;
      49             :     int max[4], average_max;
      50             :     int is_rgb;
      51             :     uint8_t rgba_map[4];
      52             :     char comps[4];
      53             :     int nb_components;
      54             :     int planewidth[4];
      55             :     int planeheight[4];
      56             :     double planeweight[4];
      57             :     PSNRDSPContext dsp;
      58             : } PSNRContext;
      59             : 
      60             : #define OFFSET(x) offsetof(PSNRContext, x)
      61             : #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
      62             : 
      63             : static const AVOption psnr_options[] = {
      64             :     {"stats_file", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
      65             :     {"f",          "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
      66             :     {"stats_version", "Set the format version for the stats file.",               OFFSET(stats_version),  AV_OPT_TYPE_INT,    {.i64=1},    1, 2, FLAGS },
      67             :     {"output_max",  "Add raw stats (max values) to the output log.",            OFFSET(stats_add_max), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
      68             :     { NULL }
      69             : };
      70             : 
      71           4 : FRAMESYNC_DEFINE_CLASS(psnr, PSNRContext, fs);
      72             : 
      73     1500052 : static inline unsigned pow_2(unsigned base)
      74             : {
      75     1500052 :     return base*base;
      76             : }
      77             : 
      78          52 : static inline double get_psnr(double mse, uint64_t nb_frames, int max)
      79             : {
      80          52 :     return 10.0 * log10(pow_2(max) / (mse / nb_frames));
      81             : }
      82             : 
      83        6000 : static uint64_t sse_line_8bit(const uint8_t *main_line,  const uint8_t *ref_line, int outw)
      84             : {
      85             :     int j;
      86        6000 :     unsigned m2 = 0;
      87             : 
      88     1506000 :     for (j = 0; j < outw; j++)
      89     1500000 :         m2 += pow_2(main_line[j] - ref_line[j]);
      90             : 
      91        6000 :     return m2;
      92             : }
      93             : 
      94           0 : static uint64_t sse_line_16bit(const uint8_t *_main_line, const uint8_t *_ref_line, int outw)
      95             : {
      96             :     int j;
      97           0 :     uint64_t m2 = 0;
      98           0 :     const uint16_t *main_line = (const uint16_t *) _main_line;
      99           0 :     const uint16_t *ref_line = (const uint16_t *) _ref_line;
     100             : 
     101           0 :     for (j = 0; j < outw; j++)
     102           0 :         m2 += pow_2(main_line[j] - ref_line[j]);
     103             : 
     104           0 :     return m2;
     105             : }
     106             : 
     107             : static inline
     108          10 : void compute_images_mse(PSNRContext *s,
     109             :                         const uint8_t *main_data[4], const int main_linesizes[4],
     110             :                         const uint8_t *ref_data[4], const int ref_linesizes[4],
     111             :                         int w, int h, double mse[4])
     112             : {
     113             :     int i, c;
     114             : 
     115          40 :     for (c = 0; c < s->nb_components; c++) {
     116          30 :         const int outw = s->planewidth[c];
     117          30 :         const int outh = s->planeheight[c];
     118          30 :         const uint8_t *main_line = main_data[c];
     119          30 :         const uint8_t *ref_line = ref_data[c];
     120          30 :         const int ref_linesize = ref_linesizes[c];
     121          30 :         const int main_linesize = main_linesizes[c];
     122          30 :         uint64_t m = 0;
     123        6030 :         for (i = 0; i < outh; i++) {
     124        6000 :             m += s->dsp.sse_line(main_line, ref_line, outw);
     125        6000 :             ref_line += ref_linesize;
     126        6000 :             main_line += main_linesize;
     127             :         }
     128          30 :         mse[c] = m / (double)(outw * outh);
     129             :     }
     130          10 : }
     131             : 
     132          80 : static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
     133             : {
     134             :     char value[128];
     135          80 :     snprintf(value, sizeof(value), "%0.2f", d);
     136          80 :     if (comp) {
     137             :         char key2[128];
     138          60 :         snprintf(key2, sizeof(key2), "%s%c", key, comp);
     139          60 :         av_dict_set(metadata, key2, value, 0);
     140             :     } else {
     141          20 :         av_dict_set(metadata, key, value, 0);
     142             :     }
     143          80 : }
     144             : 
     145          10 : static int do_psnr(FFFrameSync *fs)
     146             : {
     147          10 :     AVFilterContext *ctx = fs->parent;
     148          10 :     PSNRContext *s = ctx->priv;
     149             :     AVFrame *master, *ref;
     150          10 :     double comp_mse[4], mse = 0;
     151             :     int ret, j, c;
     152             :     AVDictionary **metadata;
     153             : 
     154          10 :     ret = ff_framesync_dualinput_get(fs, &master, &ref);
     155          10 :     if (ret < 0)
     156           0 :         return ret;
     157          10 :     if (!ref)
     158           0 :         return ff_filter_frame(ctx->outputs[0], master);
     159          10 :     metadata = &master->metadata;
     160             : 
     161          30 :     compute_images_mse(s, (const uint8_t **)master->data, master->linesize,
     162          10 :                           (const uint8_t **)ref->data, ref->linesize,
     163          20 :                           master->width, master->height, comp_mse);
     164             : 
     165          40 :     for (j = 0; j < s->nb_components; j++)
     166          30 :         mse += comp_mse[j] * s->planeweight[j];
     167             : 
     168          10 :     s->min_mse = FFMIN(s->min_mse, mse);
     169          10 :     s->max_mse = FFMAX(s->max_mse, mse);
     170             : 
     171          10 :     s->mse += mse;
     172          40 :     for (j = 0; j < s->nb_components; j++)
     173          30 :         s->mse_comp[j] += comp_mse[j];
     174          10 :     s->nb_frames++;
     175             : 
     176          40 :     for (j = 0; j < s->nb_components; j++) {
     177          30 :         c = s->is_rgb ? s->rgba_map[j] : j;
     178          30 :         set_meta(metadata, "lavfi.psnr.mse.", s->comps[j], comp_mse[c]);
     179          30 :         set_meta(metadata, "lavfi.psnr.psnr.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c]));
     180             :     }
     181          10 :     set_meta(metadata, "lavfi.psnr.mse_avg", 0, mse);
     182          10 :     set_meta(metadata, "lavfi.psnr.psnr_avg", 0, get_psnr(mse, 1, s->average_max));
     183             : 
     184          10 :     if (s->stats_file) {
     185           0 :         if (s->stats_version == 2 && !s->stats_header_written) {
     186           0 :             fprintf(s->stats_file, "psnr_log_version:2 fields:n");
     187           0 :             fprintf(s->stats_file, ",mse_avg");
     188           0 :             for (j = 0; j < s->nb_components; j++) {
     189           0 :                 fprintf(s->stats_file, ",mse_%c", s->comps[j]);
     190             :             }
     191           0 :             fprintf(s->stats_file, ",psnr_avg");
     192           0 :             for (j = 0; j < s->nb_components; j++) {
     193           0 :                 fprintf(s->stats_file, ",psnr_%c", s->comps[j]);
     194             :             }
     195           0 :             if (s->stats_add_max) {
     196           0 :                 fprintf(s->stats_file, ",max_avg");
     197           0 :                 for (j = 0; j < s->nb_components; j++) {
     198           0 :                     fprintf(s->stats_file, ",max_%c", s->comps[j]);
     199             :                 }
     200             :             }
     201           0 :             fprintf(s->stats_file, "\n");
     202           0 :             s->stats_header_written = 1;
     203             :         }
     204           0 :         fprintf(s->stats_file, "n:%"PRId64" mse_avg:%0.2f ", s->nb_frames, mse);
     205           0 :         for (j = 0; j < s->nb_components; j++) {
     206           0 :             c = s->is_rgb ? s->rgba_map[j] : j;
     207           0 :             fprintf(s->stats_file, "mse_%c:%0.2f ", s->comps[j], comp_mse[c]);
     208             :         }
     209           0 :         fprintf(s->stats_file, "psnr_avg:%0.2f ", get_psnr(mse, 1, s->average_max));
     210           0 :         for (j = 0; j < s->nb_components; j++) {
     211           0 :             c = s->is_rgb ? s->rgba_map[j] : j;
     212           0 :             fprintf(s->stats_file, "psnr_%c:%0.2f ", s->comps[j],
     213             :                     get_psnr(comp_mse[c], 1, s->max[c]));
     214             :         }
     215           0 :         if (s->stats_version == 2 && s->stats_add_max) {
     216           0 :             fprintf(s->stats_file, "max_avg:%d ", s->average_max);
     217           0 :             for (j = 0; j < s->nb_components; j++) {
     218           0 :                 c = s->is_rgb ? s->rgba_map[j] : j;
     219           0 :                 fprintf(s->stats_file, "max_%c:%d ", s->comps[j], s->max[c]);
     220             :             }
     221             :         }
     222           0 :         fprintf(s->stats_file, "\n");
     223             :     }
     224             : 
     225          10 :     return ff_filter_frame(ctx->outputs[0], master);
     226             : }
     227             : 
     228           4 : static av_cold int init(AVFilterContext *ctx)
     229             : {
     230           4 :     PSNRContext *s = ctx->priv;
     231             : 
     232           4 :     s->min_mse = +INFINITY;
     233           4 :     s->max_mse = -INFINITY;
     234             : 
     235           4 :     if (s->stats_file_str) {
     236           0 :         if (s->stats_version < 2 && s->stats_add_max) {
     237           0 :             av_log(ctx, AV_LOG_ERROR,
     238             :                 "stats_add_max was specified but stats_version < 2.\n" );
     239           0 :             return AVERROR(EINVAL);
     240             :         }
     241           0 :         if (!strcmp(s->stats_file_str, "-")) {
     242           0 :             s->stats_file = stdout;
     243             :         } else {
     244           0 :             s->stats_file = fopen(s->stats_file_str, "w");
     245           0 :             if (!s->stats_file) {
     246           0 :                 int err = AVERROR(errno);
     247             :                 char buf[128];
     248           0 :                 av_strerror(err, buf, sizeof(buf));
     249           0 :                 av_log(ctx, AV_LOG_ERROR, "Could not open stats file %s: %s\n",
     250             :                        s->stats_file_str, buf);
     251           0 :                 return err;
     252             :             }
     253             :         }
     254             :     }
     255             : 
     256           4 :     s->fs.on_event = do_psnr;
     257           4 :     return 0;
     258             : }
     259             : 
     260           2 : static int query_formats(AVFilterContext *ctx)
     261             : {
     262             :     static const enum AVPixelFormat pix_fmts[] = {
     263             :         AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16,
     264             : #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf,  AV_PIX_FMT_YUV422##suf,  AV_PIX_FMT_YUV444##suf
     265             : #define PF_ALPHA(suf)   AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
     266             : #define PF(suf)         PF_NOALPHA(suf), PF_ALPHA(suf)
     267             :         PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
     268             :         AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
     269             :         AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
     270             :         AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
     271             :         AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
     272             :         AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
     273             :         AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
     274             :         AV_PIX_FMT_NONE
     275             :     };
     276             : 
     277           2 :     AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
     278           2 :     if (!fmts_list)
     279           0 :         return AVERROR(ENOMEM);
     280           2 :     return ff_set_common_formats(ctx, fmts_list);
     281             : }
     282             : 
     283           2 : static int config_input_ref(AVFilterLink *inlink)
     284             : {
     285           2 :     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
     286           2 :     AVFilterContext *ctx  = inlink->dst;
     287           2 :     PSNRContext *s = ctx->priv;
     288             :     double average_max;
     289             :     unsigned sum;
     290             :     int j;
     291             : 
     292           2 :     s->nb_components = desc->nb_components;
     293           4 :     if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
     294           2 :         ctx->inputs[0]->h != ctx->inputs[1]->h) {
     295           0 :         av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
     296           0 :         return AVERROR(EINVAL);
     297             :     }
     298           2 :     if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
     299           0 :         av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n");
     300           0 :         return AVERROR(EINVAL);
     301             :     }
     302             : 
     303           2 :     s->max[0] = (1 << desc->comp[0].depth) - 1;
     304           2 :     s->max[1] = (1 << desc->comp[1].depth) - 1;
     305           2 :     s->max[2] = (1 << desc->comp[2].depth) - 1;
     306           2 :     s->max[3] = (1 << desc->comp[3].depth) - 1;
     307             : 
     308           2 :     s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
     309           2 :     s->comps[0] = s->is_rgb ? 'r' : 'y' ;
     310           2 :     s->comps[1] = s->is_rgb ? 'g' : 'u' ;
     311           2 :     s->comps[2] = s->is_rgb ? 'b' : 'v' ;
     312           2 :     s->comps[3] = 'a';
     313             : 
     314           2 :     s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
     315           2 :     s->planeheight[0] = s->planeheight[3] = inlink->h;
     316           2 :     s->planewidth[1]  = s->planewidth[2]  = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
     317           2 :     s->planewidth[0]  = s->planewidth[3]  = inlink->w;
     318           2 :     sum = 0;
     319           8 :     for (j = 0; j < s->nb_components; j++)
     320           6 :         sum += s->planeheight[j] * s->planewidth[j];
     321           2 :     average_max = 0;
     322           8 :     for (j = 0; j < s->nb_components; j++) {
     323           6 :         s->planeweight[j] = (double) s->planeheight[j] * s->planewidth[j] / sum;
     324           6 :         average_max += s->max[j] * s->planeweight[j];
     325             :     }
     326           2 :     s->average_max = lrint(average_max);
     327             : 
     328           2 :     s->dsp.sse_line = desc->comp[0].depth > 8 ? sse_line_16bit : sse_line_8bit;
     329             :     if (ARCH_X86)
     330           2 :         ff_psnr_init_x86(&s->dsp, desc->comp[0].depth);
     331             : 
     332           2 :     return 0;
     333             : }
     334             : 
     335           2 : static int config_output(AVFilterLink *outlink)
     336             : {
     337           2 :     AVFilterContext *ctx = outlink->src;
     338           2 :     PSNRContext *s = ctx->priv;
     339           2 :     AVFilterLink *mainlink = ctx->inputs[0];
     340             :     int ret;
     341             : 
     342           2 :     ret = ff_framesync_init_dualinput(&s->fs, ctx);
     343           2 :     if (ret < 0)
     344           0 :         return ret;
     345           2 :     outlink->w = mainlink->w;
     346           2 :     outlink->h = mainlink->h;
     347           2 :     outlink->time_base = mainlink->time_base;
     348           2 :     outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
     349           2 :     outlink->frame_rate = mainlink->frame_rate;
     350           2 :     if ((ret = ff_framesync_configure(&s->fs)) < 0)
     351           0 :         return ret;
     352             : 
     353           2 :     return 0;
     354             : }
     355             : 
     356          31 : static int activate(AVFilterContext *ctx)
     357             : {
     358          31 :     PSNRContext *s = ctx->priv;
     359          31 :     return ff_framesync_activate(&s->fs);
     360             : }
     361             : 
     362           4 : static av_cold void uninit(AVFilterContext *ctx)
     363             : {
     364           4 :     PSNRContext *s = ctx->priv;
     365             : 
     366           4 :     if (s->nb_frames > 0) {
     367             :         int j;
     368             :         char buf[256];
     369             : 
     370           2 :         buf[0] = 0;
     371           8 :         for (j = 0; j < s->nb_components; j++) {
     372           6 :             int c = s->is_rgb ? s->rgba_map[j] : j;
     373           6 :             av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j],
     374             :                         get_psnr(s->mse_comp[c], s->nb_frames, s->max[c]));
     375             :         }
     376           2 :         av_log(ctx, AV_LOG_INFO, "PSNR%s average:%f min:%f max:%f\n",
     377             :                buf,
     378             :                get_psnr(s->mse, s->nb_frames, s->average_max),
     379             :                get_psnr(s->max_mse, 1, s->average_max),
     380             :                get_psnr(s->min_mse, 1, s->average_max));
     381             :     }
     382             : 
     383           4 :     ff_framesync_uninit(&s->fs);
     384             : 
     385           4 :     if (s->stats_file && s->stats_file != stdout)
     386           0 :         fclose(s->stats_file);
     387           4 : }
     388             : 
     389             : static const AVFilterPad psnr_inputs[] = {
     390             :     {
     391             :         .name         = "main",
     392             :         .type         = AVMEDIA_TYPE_VIDEO,
     393             :     },{
     394             :         .name         = "reference",
     395             :         .type         = AVMEDIA_TYPE_VIDEO,
     396             :         .config_props = config_input_ref,
     397             :     },
     398             :     { NULL }
     399             : };
     400             : 
     401             : static const AVFilterPad psnr_outputs[] = {
     402             :     {
     403             :         .name          = "default",
     404             :         .type          = AVMEDIA_TYPE_VIDEO,
     405             :         .config_props  = config_output,
     406             :     },
     407             :     { NULL }
     408             : };
     409             : 
     410             : AVFilter ff_vf_psnr = {
     411             :     .name          = "psnr",
     412             :     .description   = NULL_IF_CONFIG_SMALL("Calculate the PSNR between two video streams."),
     413             :     .preinit       = psnr_framesync_preinit,
     414             :     .init          = init,
     415             :     .uninit        = uninit,
     416             :     .query_formats = query_formats,
     417             :     .activate      = activate,
     418             :     .priv_size     = sizeof(PSNRContext),
     419             :     .priv_class    = &psnr_class,
     420             :     .inputs        = psnr_inputs,
     421             :     .outputs       = psnr_outputs,
     422             : };

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