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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 "libavutil/opt.h"
  25 #include "swresample.h"
  26 #undef fprintf
  27
  28 #define SAMPLES 1000
  29
  30 #define ASSERT_LEVEL 2
  31
  32 static double get(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f){
  33     const uint8_t *p;
  34     if(av_sample_fmt_is_planar(f)){
  35         f= av_get_alt_sample_fmt(f, 0);
  36         p= a[ch];
  37     }else{
  38         p= a[0];
  39         index= ch + index*ch_count;
  40     }
  41
  42     switch(f){
  43     case AV_SAMPLE_FMT_U8 : return ((const uint8_t*)p)[index]/255.0*2-1.0;
  44     case AV_SAMPLE_FMT_S16: return ((const int16_t*)p)[index]/32767.0;
  45     case AV_SAMPLE_FMT_S32: return ((const int32_t*)p)[index]/2147483647.0;
  46     case AV_SAMPLE_FMT_FLT: return ((const float  *)p)[index];
  47     case AV_SAMPLE_FMT_DBL: return ((const double *)p)[index];
  48     default: av_assert0(0);
  49     }
  50 }
  51
  52 static void  set(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f, double v){
  53     uint8_t *p;
  54     if(av_sample_fmt_is_planar(f)){
  55         f= av_get_alt_sample_fmt(f, 0);
  56         p= a[ch];
  57     }else{
  58         p= a[0];
  59         index= ch + index*ch_count;
  60     }
  61     switch(f){
  62     case AV_SAMPLE_FMT_U8 : ((uint8_t*)p)[index]= (v+1.0)*255.0/2; break;
  63     case AV_SAMPLE_FMT_S16: ((int16_t*)p)[index]= v*32767;         break;
  64     case AV_SAMPLE_FMT_S32: ((int32_t*)p)[index]= v*2147483647;    break;
  65     case AV_SAMPLE_FMT_FLT: ((float  *)p)[index]= v;               break;
  66     case AV_SAMPLE_FMT_DBL: ((double *)p)[index]= v;               break;
  67     default: av_assert2(0);
  68     }
  69 }
  70
  71 static void shift(uint8_t *a[], int index, int ch_count, enum AVSampleFormat f){
  72     int ch;
  73
  74     if(av_sample_fmt_is_planar(f)){
  75         f= av_get_alt_sample_fmt(f, 0);
  76         for(ch= 0; ch<ch_count; ch++)
  77             a[ch] += index*av_get_bytes_per_sample(f);
  78     }else{
  79         a[0] += index*ch_count*av_get_bytes_per_sample(f);
  80     }
  81 }
  82
  83 static const enum AVSampleFormat formats[] = {
  84     AV_SAMPLE_FMT_S16,
  85     AV_SAMPLE_FMT_FLTP,
  86     AV_SAMPLE_FMT_S16P,
  87     AV_SAMPLE_FMT_FLT,
  88     AV_SAMPLE_FMT_S32P,
  89     AV_SAMPLE_FMT_S32,
  90     AV_SAMPLE_FMT_U8P,
  91     AV_SAMPLE_FMT_U8,
  92     AV_SAMPLE_FMT_DBLP,
  93     AV_SAMPLE_FMT_DBL,
  94 };
  95
  96 static const int rates[] = {
  97     8000,
  98     11025,
  99     16000,
 100     22050,
 101     32000,
 102     48000,
 103 };
 104
 105 uint64_t layouts[]={
 106     AV_CH_LAYOUT_MONO                    ,
 107     AV_CH_LAYOUT_STEREO                  ,
 108     AV_CH_LAYOUT_2_1                     ,
 109     AV_CH_LAYOUT_SURROUND                ,
 110     AV_CH_LAYOUT_4POINT0                 ,
 111     AV_CH_LAYOUT_2_2                     ,
 112     AV_CH_LAYOUT_QUAD                    ,
 113     AV_CH_LAYOUT_5POINT0                 ,
 114     AV_CH_LAYOUT_5POINT1                 ,
 115     AV_CH_LAYOUT_5POINT0_BACK            ,
 116     AV_CH_LAYOUT_5POINT1_BACK            ,
 117     AV_CH_LAYOUT_7POINT0                 ,
 118     AV_CH_LAYOUT_7POINT1                 ,
 119     AV_CH_LAYOUT_7POINT1_WIDE            ,
 120 0
 121 };
 122
 123 static void setup_array(uint8_t *out[SWR_CH_MAX], uint8_t *in, enum AVSampleFormat format, int samples){
 124     if(av_sample_fmt_is_planar(format)){
 125         int i;
 126         int plane_size= av_get_bytes_per_sample(format&0xFF)*samples;
 127         format&=0xFF;
 128         for(i=0; i<SWR_CH_MAX; i++){
 129             out[i]= in + i*plane_size;
 130         }
 131     }else{
 132         out[0]= in;
 133     }
 134 }
 135
 136 int main(int argc, char **argv){
 137     int in_sample_rate, out_sample_rate, ch ,i, in_ch_layout_index, out_ch_layout_index, osr, flush_count;
 138     uint64_t in_ch_layout, out_ch_layout;
 139     enum AVSampleFormat in_sample_fmt, out_sample_fmt;
 140     uint8_t array_in[SAMPLES*8*8];
 141     uint8_t array_mid[SAMPLES*8*8*3];
 142     uint8_t array_out[SAMPLES*8*8+100];
 143     uint8_t *ain[SWR_CH_MAX];
 144     uint8_t *aout[SWR_CH_MAX];
 145     uint8_t *amid[SWR_CH_MAX];
 146     int flush_i=0;
 147     int mode = 0;
 148
 149     struct SwrContext * forw_ctx= NULL;
 150     struct SwrContext *backw_ctx= NULL;
 151
 152     in_sample_rate=16000;
 153     for(osr=0; osr<FF_ARRAY_ELEMS(rates); osr++){
 154         out_sample_rate= rates[osr];
 155         for(in_sample_fmt= AV_SAMPLE_FMT_U8; in_sample_fmt<=AV_SAMPLE_FMT_DBL; in_sample_fmt++){
 156             for(out_sample_fmt= AV_SAMPLE_FMT_U8; out_sample_fmt<=AV_SAMPLE_FMT_DBL; out_sample_fmt++){
 157                 for(in_ch_layout_index=0; layouts[in_ch_layout_index]; in_ch_layout_index++){
 158                     int in_ch_count;
 159                     in_ch_layout= layouts[in_ch_layout_index];
 160                     in_ch_count= av_get_channel_layout_nb_channels(in_ch_layout);
 161                     for(out_ch_layout_index=0; layouts[out_ch_layout_index]; out_ch_layout_index++){
 162                         int out_count, mid_count, out_ch_count;
 163                         out_ch_layout= layouts[out_ch_layout_index];
 164                         out_ch_count= av_get_channel_layout_nb_channels(out_ch_layout);
 165                         fprintf(stderr, "ch %d->%d, rate:%5d->%5d, fmt:%s->%s\n",
 166                                in_ch_count, out_ch_count,
 167                                in_sample_rate, out_sample_rate,
 168                                av_get_sample_fmt_name(in_sample_fmt), av_get_sample_fmt_name(out_sample_fmt));
 169                         forw_ctx  = swr_alloc_set_opts(forw_ctx, out_ch_layout, av_get_alt_sample_fmt(out_sample_fmt, 1), out_sample_rate,
 170                                                                   in_ch_layout, av_get_alt_sample_fmt( in_sample_fmt, 1),  in_sample_rate,
 171                                                        0, 0);
 172                         backw_ctx = swr_alloc_set_opts(backw_ctx, in_ch_layout,  in_sample_fmt,             in_sample_rate,
 173                                                                  out_ch_layout, av_get_alt_sample_fmt(out_sample_fmt, 1), out_sample_rate,
 174                                                        0, 0);
 175                         if(swr_init( forw_ctx) < 0)
 176                             fprintf(stderr, "swr_init(->) failed\n");
 177                         if(swr_init(backw_ctx) < 0)
 178                             fprintf(stderr, "swr_init(<-) failed\n");
 179                         if(!forw_ctx)
 180                             fprintf(stderr, "Failed to init forw_cts\n");
 181                         if(!backw_ctx)
 182                             fprintf(stderr, "Failed to init backw_ctx\n");
 183                                //FIXME test planar
 184                         setup_array(ain , array_in , av_get_alt_sample_fmt( in_sample_fmt, 1),   SAMPLES);
 185                         setup_array(amid, array_mid, av_get_alt_sample_fmt(out_sample_fmt, 1), 3*SAMPLES);
 186                         setup_array(aout, array_out,  in_sample_fmt           ,   SAMPLES);
 187                         for(ch=0; ch<in_ch_count; ch++){
 188                             for(i=0; i<SAMPLES; i++)
 189                                 set(ain, ch, i, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1), sin(i*i*3/SAMPLES));
 190                         }
 191                         mode++;
 192                         mode%=3;
 193                         if(mode==0 /*|| out_sample_rate == in_sample_rate*/) {
 194                             mid_count= swr_convert(forw_ctx, amid, 3*SAMPLES, ain, SAMPLES);
 195                         } else if(mode==1){
 196                             mid_count= swr_convert(forw_ctx, amid,         0, ain, SAMPLES);
 197                             mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, ain,       0);
 198                         } else {
 199                             int tmp_count;
 200                             mid_count= swr_convert(forw_ctx, amid,         0, ain,       1);
 201                             av_assert0(mid_count==0);
 202                             shift(ain,  1, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 203                             mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, ain,       0);
 204                             shift(amid,  mid_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1)); tmp_count = mid_count;
 205                             mid_count+=swr_convert(forw_ctx, amid,         2, ain,       2);
 206                             shift(amid,  mid_count-tmp_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1)); tmp_count = mid_count;
 207                             shift(ain,  2, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 208                             mid_count+=swr_convert(forw_ctx, amid,         1, ain, SAMPLES-3);
 209                             shift(amid,  mid_count-tmp_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1)); tmp_count = mid_count;
 210                             shift(ain, -3, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 211                             mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, ain,       0);
 212                             shift(amid,  -tmp_count, out_ch_count, av_get_alt_sample_fmt(out_sample_fmt, 1));
 213                         }
 214                         out_count= swr_convert(backw_ctx,aout, SAMPLES, amid, mid_count);
 215
 216                         for(ch=0; ch<in_ch_count; ch++){
 217                             double sse, x, maxdiff=0;
 218                             double sum_a= 0;
 219                             double sum_b= 0;
 220                             double sum_aa= 0;
 221                             double sum_bb= 0;
 222                             double sum_ab= 0;
 223                             for(i=0; i<out_count; i++){
 224                                 double a= get(ain , ch, i, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 225                                 double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
 226                                 sum_a += a;
 227                                 sum_b += b;
 228                                 sum_aa+= a*a;
 229                                 sum_bb+= b*b;
 230                                 sum_ab+= a*b;
 231                                 maxdiff= FFMAX(maxdiff, FFABS(a-b));
 232                             }
 233                             x = sum_ab/sum_bb;
 234                             sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
 235
 236                             fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/out_count), x, maxdiff, out_count);
 237                         }
 238
 239                         flush_i++;
 240                         flush_i%=21;
 241                         flush_count = swr_convert(backw_ctx,aout, flush_i, 0, 0);
 242                         shift(aout,  flush_i, in_ch_count, in_sample_fmt);
 243                         flush_count+= swr_convert(backw_ctx,aout, SAMPLES-flush_i, 0, 0);
 244                         shift(aout, -flush_i, in_ch_count, in_sample_fmt);
 245                         if(flush_count){
 246                             for(ch=0; ch<in_ch_count; ch++){
 247                                 double sse, x, maxdiff=0;
 248                                 double sum_a= 0;
 249                                 double sum_b= 0;
 250                                 double sum_aa= 0;
 251                                 double sum_bb= 0;
 252                                 double sum_ab= 0;
 253                                 for(i=0; i<flush_count; i++){
 254                                     double a= get(ain , ch, i+out_count, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
 255                                     double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
 256                                     sum_a += a;
 257                                     sum_b += b;
 258                                     sum_aa+= a*a;
 259                                     sum_bb+= b*b;
 260                                     sum_ab+= a*b;
 261                                     maxdiff= FFMAX(maxdiff, FFABS(a-b));
 262                                 }
 263                                 x = sum_ab/sum_bb;
 264                                 sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
 265
 266                                 fprintf(stderr, "[%f %f %f] len:%5d F:%3d\n", sqrt(sse/flush_count), x, maxdiff, flush_count, flush_i);
 267                             }
 268                         }
 269
 270
 271                         fprintf(stderr, "\n");
 272                     }
 273                 }
 274             }
 275         }
 276     }
 277
 278     return 0;
 279 }