git.sesse.net Git - ffmpeg/blob - libswresample/swresample_test.c

   1 /*
   2  * Copyright (C) 2011 Michael Niedermayer (michaelni@gmx.at)
   3  *
   4  * This file is part of libswresample
   5  *
   6  * libswresample is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * libswresample is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with libswresample; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include "libavutil/avassert.h"
  22 #include "libavutil/common.h"
  23 #include "libavutil/audioconvert.h"
  24 #include "swresample.h"
  25 #undef fprintf
  26
  27 #define SAMPLES 1000
  28
  29 #define ASSERT_LEVEL 2
  30
  31 static double get(const void *p, int index, enum AVSampleFormat f){
  32     switch(f){
  33     case AV_SAMPLE_FMT_U8 : return ((const uint8_t*)p)[index]/255.0*2-1.0;
  34     case AV_SAMPLE_FMT_S16: return ((const int16_t*)p)[index]/32767.0;
  35     case AV_SAMPLE_FMT_S32: return ((const int32_t*)p)[index]/2147483647.0;
  36     case AV_SAMPLE_FMT_FLT: return ((const float  *)p)[index];
  37     case AV_SAMPLE_FMT_DBL: return ((const double *)p)[index];
  38     default: av_assert2(0);
  39     }
  40 }
  41
  42 static void  set(void *p, int index, enum AVSampleFormat f, double v){
  43     switch(f){
  44     case AV_SAMPLE_FMT_U8 : ((uint8_t*)p)[index]= (v+1.0)*255.0/2; break;
  45     case AV_SAMPLE_FMT_S16: ((int16_t*)p)[index]= v*32767;         break;
  46     case AV_SAMPLE_FMT_S32: ((int32_t*)p)[index]= v*2147483647;    break;
  47     case AV_SAMPLE_FMT_FLT: ((float  *)p)[index]= v;               break;
  48     case AV_SAMPLE_FMT_DBL: ((double *)p)[index]= v;               break;
  49     default: av_assert2(0);
  50     }
  51 }
  52
  53 uint64_t layouts[]={
  54 AV_CH_LAYOUT_MONO                    ,
  55 AV_CH_LAYOUT_STEREO                  ,
  56 AV_CH_LAYOUT_2_1                     ,
  57 AV_CH_LAYOUT_SURROUND                ,
  58 AV_CH_LAYOUT_4POINT0                 ,
  59 AV_CH_LAYOUT_2_2                     ,
  60 AV_CH_LAYOUT_QUAD                    ,
  61 AV_CH_LAYOUT_5POINT0                 ,
  62 AV_CH_LAYOUT_5POINT1                 ,
  63 AV_CH_LAYOUT_5POINT0_BACK            ,
  64 AV_CH_LAYOUT_5POINT1_BACK            ,
  65 AV_CH_LAYOUT_7POINT0                 ,
  66 AV_CH_LAYOUT_7POINT1                 ,
  67 AV_CH_LAYOUT_7POINT1_WIDE            ,
  68 0
  69 };
  70
  71 int main(int argc, char **argv){
  72     int in_sample_rate, out_sample_rate, ch ,i, in_ch_layout_index, out_ch_layout_index, osr;
  73     uint64_t in_ch_layout, out_ch_layout;
  74     enum AVSampleFormat in_sample_fmt, out_sample_fmt;
  75     int sample_rates[]={8000,11025,16000,22050,32000};
  76     uint8_t array_in[SAMPLES*8*8];
  77     uint8_t array_mid[SAMPLES*8*8*3];
  78     uint8_t array_out[SAMPLES*8*8+100];
  79     struct SwrContext * forw_ctx= NULL;
  80     struct SwrContext *backw_ctx= NULL;
  81
  82     in_sample_rate=16000;
  83     for(osr=0; osr<5; osr++){
  84         out_sample_rate= sample_rates[osr];
  85         for(in_sample_fmt= AV_SAMPLE_FMT_U8; in_sample_fmt<=AV_SAMPLE_FMT_DBL; in_sample_fmt++){
  86             for(out_sample_fmt= AV_SAMPLE_FMT_U8; out_sample_fmt<=AV_SAMPLE_FMT_DBL; out_sample_fmt++){
  87                 for(in_ch_layout_index=0; layouts[in_ch_layout_index]; in_ch_layout_index++){
  88                     in_ch_layout= layouts[in_ch_layout_index];
  89                     int in_ch_count= av_get_channel_layout_nb_channels(in_ch_layout);
  90                     for(out_ch_layout_index=0; layouts[out_ch_layout_index]; out_ch_layout_index++){
  91                         int out_count, mid_count;
  92                         out_ch_layout= layouts[out_ch_layout_index];
  93                         int out_ch_count= av_get_channel_layout_nb_channels(out_ch_layout);
  94                         fprintf(stderr, "ch %d->%d, rate:%5d->%5d, fmt:%s->%s",
  95                                in_ch_count, out_ch_count,
  96                                in_sample_rate, out_sample_rate,
  97                                av_get_sample_fmt_name(in_sample_fmt), av_get_sample_fmt_name(out_sample_fmt));
  98                         forw_ctx  = swr_alloc2(forw_ctx, out_ch_layout, out_sample_fmt, out_sample_rate,
  99                                                                   in_ch_layout,  in_sample_fmt,  in_sample_rate, 0, 0);
 100                         backw_ctx = swr_alloc2(backw_ctx,in_ch_layout,  in_sample_fmt,  in_sample_rate,
 101                                                                  out_ch_layout, out_sample_fmt, out_sample_rate, 0, 0);
 102                         if(swr_init( forw_ctx) < 0)
 103                             fprintf(stderr, "swr_init(->) failed\n");
 104                         if(swr_init(backw_ctx) < 0)
 105                             fprintf(stderr, "swr_init(<-) failed\n");
 106                         if(!forw_ctx)
 107                             fprintf(stderr, "Failed to init forw_cts\n");
 108                         if(!backw_ctx)
 109                             fprintf(stderr, "Failed to init backw_ctx\n");
 110                                //FIXME test planar
 111                         for(ch=0; ch<in_ch_count; ch++){
 112                             for(i=0; i<SAMPLES; i++)
 113                                 set(array_in, ch + i*in_ch_count, in_sample_fmt, sin(i*i*3/SAMPLES));
 114                         }
 115                         mid_count= swr_convert(forw_ctx, (      uint8_t*[]){array_mid}, 3*SAMPLES,
 116                                                                 (const uint8_t*[]){array_in }, SAMPLES);
 117                         out_count= swr_convert(backw_ctx,(      uint8_t*[]){array_out}, 3*SAMPLES,
 118                                                                 (const uint8_t*[]){array_mid}, mid_count);
 119                         for(ch=0; ch<in_ch_count; ch++){
 120                             double sse, x, maxdiff=0;
 121                             double sum_a= 0;
 122                             double sum_b= 0;
 123                             double sum_aa= 0;
 124                             double sum_bb= 0;
 125                             double sum_ab= 0;
 126                             for(i=0; i<SAMPLES; i++){
 127                                 double a= get(array_in , ch + i*in_ch_count, in_sample_fmt);
 128                                 double b= get(array_out, ch + i*in_ch_count, in_sample_fmt);
 129                                 sum_a += a;
 130                                 sum_b += b;
 131                                 sum_aa+= a*a;
 132                                 sum_bb+= b*b;
 133                                 sum_ab+= a*b;
 134                                 maxdiff= FFMAX(maxdiff, FFABS(a-b));
 135                             }
 136                             x = sum_ab/sum_bb;
 137                             sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
 138
 139                             fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/SAMPLES), x, maxdiff, out_count);
 140                         }
 141                         fprintf(stderr, "\n");
 142                     }
 143                 }
 144             }
 145         }
 146     }
 147
 148     return 0;
 149 }