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   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(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f){
  32     const uint8_t *p;
  33     if(av_sample_fmt_is_planar(f)){
  34         f= av_get_alt_sample_fmt(f, 0);
  35         p= a[ch];
  36     }else{
  37         p= a[0];
  38         index= ch + index*ch_count;
  39     }
  40
  41     switch(f){
  42     case AV_SAMPLE_FMT_U8 : return ((const uint8_t*)p)[index]/255.0*2-1.0;
  43     case AV_SAMPLE_FMT_S16: return ((const int16_t*)p)[index]/32767.0;
  44     case AV_SAMPLE_FMT_S32: return ((const int32_t*)p)[index]/2147483647.0;
  45     case AV_SAMPLE_FMT_FLT: return ((const float  *)p)[index];
  46     case AV_SAMPLE_FMT_DBL: return ((const double *)p)[index];
  47     default: av_assert0(0);
  48     }
  49 }
  50
  51 static void  set(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f, double v){
  52     uint8_t *p;
  53     if(av_sample_fmt_is_planar(f)){
  54         f= av_get_alt_sample_fmt(f, 0);
  55         p= a[ch];
  56     }else{
  57         p= a[0];
  58         index= ch + index*ch_count;
  59     }
  60     switch(f){
  61     case AV_SAMPLE_FMT_U8 : ((uint8_t*)p)[index]= (v+1.0)*255.0/2; break;
  62     case AV_SAMPLE_FMT_S16: ((int16_t*)p)[index]= v*32767;         break;
  63     case AV_SAMPLE_FMT_S32: ((int32_t*)p)[index]= v*2147483647;    break;
  64     case AV_SAMPLE_FMT_FLT: ((float  *)p)[index]= v;               break;
  65     case AV_SAMPLE_FMT_DBL: ((double *)p)[index]= v;               break;
  66     default: av_assert2(0);
  67     }
  68 }
  69
  70 static void shift(uint8_t *a[], int index, int ch_count, enum AVSampleFormat f){
  71     int ch;
  72
  73     if(av_sample_fmt_is_planar(f)){
  74         f= av_get_alt_sample_fmt(f, 0);
  75         for(ch= 0; ch<ch_count; ch++)
  76             a[ch] += index*av_get_bytes_per_sample(f);
  77     }else{
  78         a[0] += index*ch_count*av_get_bytes_per_sample(f);
  79     }
  80 }
  81
  82 uint64_t layouts[]={
  83 AV_CH_LAYOUT_MONO                    ,
  84 AV_CH_LAYOUT_STEREO                  ,
  85 AV_CH_LAYOUT_2_1                     ,
  86 AV_CH_LAYOUT_SURROUND                ,
  87 AV_CH_LAYOUT_4POINT0                 ,
  88 AV_CH_LAYOUT_2_2                     ,
  89 AV_CH_LAYOUT_QUAD                    ,
  90 AV_CH_LAYOUT_5POINT0                 ,
  91 AV_CH_LAYOUT_5POINT1                 ,
  92 AV_CH_LAYOUT_5POINT0_BACK            ,
  93 AV_CH_LAYOUT_5POINT1_BACK            ,
  94 AV_CH_LAYOUT_7POINT0                 ,
  95 AV_CH_LAYOUT_7POINT1                 ,
  96 AV_CH_LAYOUT_7POINT1_WIDE            ,
  97 0
  98 };
  99
 100 static void setup_array(uint8_t *out[SWR_CH_MAX], uint8_t *in, enum AVSampleFormat format, int samples){
 101     if(av_sample_fmt_is_planar(format)){
 102         int i;
 103         int plane_size= av_get_bytes_per_sample(format&0xFF)*samples;
 104         format&=0xFF;
 105         for(i=0; i<SWR_CH_MAX; i++){
 106             out[i]= in + i*plane_size;
 107         }
 108     }else{
 109         out[0]= in;
 110     }
 111 }
 112
 113 int main(int argc, char **argv){
 114     int in_sample_rate, out_sample_rate, ch ,i, in_ch_layout_index, out_ch_layout_index, osr, flush_count;
 115     uint64_t in_ch_layout, out_ch_layout;
 116     enum AVSampleFormat in_sample_fmt, out_sample_fmt;
 117     int sample_rates[]={8000,11025,16000,22050,32000};
 118     uint8_t array_in[SAMPLES*8*8];
 119     uint8_t array_mid[SAMPLES*8*8*3];
 120     uint8_t array_out[SAMPLES*8*8+100];
 121     uint8_t *ain[SWR_CH_MAX];
 122     uint8_t *aout[SWR_CH_MAX];
 123     uint8_t *amid[SWR_CH_MAX];
 124     int flush_i=0;
 125     int mode = 0;
 126
 127     struct SwrContext * forw_ctx= NULL;
 128     struct SwrContext *backw_ctx= NULL;
 129
 130     in_sample_rate=16000;
 131     for(osr=0; osr<5; osr++){
 132         out_sample_rate= sample_rates[osr];
 133         for(in_sample_fmt= AV_SAMPLE_FMT_U8; in_sample_fmt<=AV_SAMPLE_FMT_DBL; in_sample_fmt++){
 134             for(out_sample_fmt= AV_SAMPLE_FMT_U8; out_sample_fmt<=AV_SAMPLE_FMT_DBL; out_sample_fmt++){
 135                 for(in_ch_layout_index=0; layouts[in_ch_layout_index]; in_ch_layout_index++){
 136                     int in_ch_count;
 137                     in_ch_layout= layouts[in_ch_layout_index];
 138                     in_ch_count= av_get_channel_layout_nb_channels(in_ch_layout);
 139                     for(out_ch_layout_index=0; layouts[out_ch_layout_index]; out_ch_layout_index++){
 140                         int out_count, mid_count, out_ch_count;
 141                         out_ch_layout= layouts[out_ch_layout_index];
 142                         out_ch_count= av_get_channel_layout_nb_channels(out_ch_layout);
 143                         fprintf(stderr, "ch %d->%d, rate:%5d->%5d, fmt:%s->%s",
 144                                in_ch_count, out_ch_count,
 145                                in_sample_rate, out_sample_rate,
 146                                av_get_sample_fmt_name(in_sample_fmt), av_get_sample_fmt_name(out_sample_fmt));
 147                         forw_ctx  = swr_alloc_set_opts(forw_ctx, out_ch_layout, av_get_alt_sample_fmt(out_sample_fmt, 1), out_sample_rate,
 148                                                                   in_ch_layout, av_get_alt_sample_fmt( in_sample_fmt, 1),  in_sample_rate,
 149                                                        0, 0);
 150                         backw_ctx = swr_alloc_set_opts(backw_ctx, in_ch_layout,  in_sample_fmt,             in_sample_rate,
 151                                                                  out_ch_layout, av_get_alt_sample_fmt(out_sample_fmt, 1), out_sample_rate,
 152                                                        0, 0);
 153                         if(swr_init( forw_ctx) < 0)
 154                             fprintf(stderr, "swr_init(->) failed\n");
 155                         if(swr_init(backw_ctx) < 0)
 156                             fprintf(stderr, "swr_init(<-) failed\n");
 157                         if(!forw_ctx)
 158                             fprintf(stderr, "Failed to init forw_cts\n");
 159                         if(!backw_ctx)
 160                             fprintf(stderr, "Failed to init backw_ctx\n");
 161                                //FIXME test planar
 162                         setup_array(ain , array_in , av_get_alt_sample_fmt( in_sample_fmt, 1),   SAMPLES);
 163                         setup_array(amid, array_mid, av_get_alt_sample_fmt(out_sample_fmt, 1), 3*SAMPLES);
 164                         setup_array(aout, array_out,  in_sample_fmt           ,   SAMPLES);
 165                         for(ch=0; ch<in_ch_count; ch++){
 166                             for(i=0; i<SAMPLES; i++)
 167                                 set(ain, ch, i, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1), sin(i*i*3/SAMPLES));
 168                         }
 169                         mode++;
 170                         mode%=3;
 171                         if(mode==0 /*|| out_sample_rate == in_sample_rate*/) {
 172                             mid_count= swr_convert(forw_ctx, amid, 3*SAMPLES, ain, SAMPLES);
 173                         } else if(mode==1){
 174                             mid_count= swr_convert(forw_ctx, amid,         0, ain, SAMPLES);
 175                             mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, ain,       0);
 176                         } else {
 177                             int tmp_count;
 178                             mid_count= swr_convert(forw_ctx, amid,         0, ain,       1);
 179                             av_assert0(mid_count==0);
 180                             shift(ain,  1, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 181                             mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, ain,       0);
 182                             shift(amid,  mid_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1)); tmp_count = mid_count;
 183                             mid_count+=swr_convert(forw_ctx, amid,         2, ain,       2);
 184                             shift(amid,  mid_count-tmp_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1)); tmp_count = mid_count;
 185                             shift(ain,  2, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 186                             mid_count+=swr_convert(forw_ctx, amid,         1, ain, SAMPLES-3);
 187                             shift(amid,  mid_count-tmp_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1)); tmp_count = mid_count;
 188                             shift(ain, -3, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 189                             mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, ain,       0);
 190                             shift(amid,  -tmp_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1));
 191                         }
 192                         out_count= swr_convert(backw_ctx,aout, SAMPLES, amid, mid_count);
 193
 194                         for(ch=0; ch<in_ch_count; ch++){
 195                             double sse, x, maxdiff=0;
 196                             double sum_a= 0;
 197                             double sum_b= 0;
 198                             double sum_aa= 0;
 199                             double sum_bb= 0;
 200                             double sum_ab= 0;
 201                             for(i=0; i<out_count; i++){
 202                                 double a= get(ain , ch, i, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 203                                 double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
 204                                 sum_a += a;
 205                                 sum_b += b;
 206                                 sum_aa+= a*a;
 207                                 sum_bb+= b*b;
 208                                 sum_ab+= a*b;
 209                                 maxdiff= FFMAX(maxdiff, FFABS(a-b));
 210                             }
 211                             x = sum_ab/sum_bb;
 212                             sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
 213
 214                             fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/out_count), x, maxdiff, out_count);
 215                         }
 216
 217                         flush_i++;
 218                         flush_i%=21;
 219                         flush_count = swr_convert(backw_ctx,aout, flush_i, 0, 0);
 220                         shift(aout,  flush_i, in_ch_count, in_sample_fmt);
 221                         flush_count+= swr_convert(backw_ctx,aout, SAMPLES-flush_i, 0, 0);
 222                         shift(aout, -flush_i, in_ch_count, in_sample_fmt);
 223                         if(flush_count){
 224                             for(ch=0; ch<in_ch_count; ch++){
 225                                 double sse, x, maxdiff=0;
 226                                 double sum_a= 0;
 227                                 double sum_b= 0;
 228                                 double sum_aa= 0;
 229                                 double sum_bb= 0;
 230                                 double sum_ab= 0;
 231                                 for(i=0; i<flush_count; i++){
 232                                     double a= get(ain , ch, i+out_count, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 233                                     double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
 234                                     sum_a += a;
 235                                     sum_b += b;
 236                                     sum_aa+= a*a;
 237                                     sum_bb+= b*b;
 238                                     sum_ab+= a*b;
 239                                     maxdiff= FFMAX(maxdiff, FFABS(a-b));
 240                                 }
 241                                 x = sum_ab/sum_bb;
 242                                 sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
 243
 244                                 fprintf(stderr, "[%f %f %f] len:%5d F:%3d\n", sqrt(sse/flush_count), x, maxdiff, flush_count, flush_i);
 245                             }
 246                         }
 247
 248
 249                         fprintf(stderr, "\n");
 250                     }
 251                 }
 252             }
 253         }
 254     }
 255
 256     return 0;
 257 }