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libswresample/swresample_test.c

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00001 /*
00002  * Copyright (C) 2011 Michael Niedermayer (michaelni@gmx.at)
00003  *
00004  * This file is part of libswresample
00005  *
00006  * libswresample is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * libswresample is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with libswresample; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00021 #include "libavutil/avassert.h"
00022 #include "libavutil/common.h"
00023 #include "libavutil/audioconvert.h"
00024 #include "swresample.h"
00025 #undef fprintf
00026 
00027 #define SAMPLES 1000
00028 
00029 #define ASSERT_LEVEL 2
00030 
00031 static double get(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f){
00032     const uint8_t *p;
00033     if(av_sample_fmt_is_planar(f)){
00034         f= av_get_alt_sample_fmt(f, 0);
00035         p= a[ch];
00036     }else{
00037         p= a[0];
00038         index= ch + index*ch_count;
00039     }
00040 
00041     switch(f){
00042     case AV_SAMPLE_FMT_U8 : return ((const uint8_t*)p)[index]/255.0*2-1.0;
00043     case AV_SAMPLE_FMT_S16: return ((const int16_t*)p)[index]/32767.0;
00044     case AV_SAMPLE_FMT_S32: return ((const int32_t*)p)[index]/2147483647.0;
00045     case AV_SAMPLE_FMT_FLT: return ((const float  *)p)[index];
00046     case AV_SAMPLE_FMT_DBL: return ((const double *)p)[index];
00047     default: av_assert0(0);
00048     }
00049 }
00050 
00051 static void  set(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f, double v){
00052     uint8_t *p;
00053     if(av_sample_fmt_is_planar(f)){
00054         f= av_get_alt_sample_fmt(f, 0);
00055         p= a[ch];
00056     }else{
00057         p= a[0];
00058         index= ch + index*ch_count;
00059     }
00060     switch(f){
00061     case AV_SAMPLE_FMT_U8 : ((uint8_t*)p)[index]= (v+1.0)*255.0/2; break;
00062     case AV_SAMPLE_FMT_S16: ((int16_t*)p)[index]= v*32767;         break;
00063     case AV_SAMPLE_FMT_S32: ((int32_t*)p)[index]= v*2147483647;    break;
00064     case AV_SAMPLE_FMT_FLT: ((float  *)p)[index]= v;               break;
00065     case AV_SAMPLE_FMT_DBL: ((double *)p)[index]= v;               break;
00066     default: av_assert2(0);
00067     }
00068 }
00069 
00070 uint64_t layouts[]={
00071 AV_CH_LAYOUT_MONO                    ,
00072 AV_CH_LAYOUT_STEREO                  ,
00073 AV_CH_LAYOUT_2_1                     ,
00074 AV_CH_LAYOUT_SURROUND                ,
00075 AV_CH_LAYOUT_4POINT0                 ,
00076 AV_CH_LAYOUT_2_2                     ,
00077 AV_CH_LAYOUT_QUAD                    ,
00078 AV_CH_LAYOUT_5POINT0                 ,
00079 AV_CH_LAYOUT_5POINT1                 ,
00080 AV_CH_LAYOUT_5POINT0_BACK            ,
00081 AV_CH_LAYOUT_5POINT1_BACK            ,
00082 AV_CH_LAYOUT_7POINT0                 ,
00083 AV_CH_LAYOUT_7POINT1                 ,
00084 AV_CH_LAYOUT_7POINT1_WIDE            ,
00085 0
00086 };
00087 
00088 static void setup_array(uint8_t *out[SWR_CH_MAX], uint8_t *in, enum AVSampleFormat format, int samples){
00089     if(av_sample_fmt_is_planar(format)){
00090         int i;
00091         int plane_size= av_get_bytes_per_sample(format&0xFF)*samples;
00092         format&=0xFF;
00093         for(i=0; i<SWR_CH_MAX; i++){
00094             out[i]= in + i*plane_size;
00095         }
00096     }else{
00097         out[0]= in;
00098     }
00099 }
00100 
00101 int main(int argc, char **argv){
00102     int in_sample_rate, out_sample_rate, ch ,i, in_ch_layout_index, out_ch_layout_index, osr, flush_count;
00103     uint64_t in_ch_layout, out_ch_layout;
00104     enum AVSampleFormat in_sample_fmt, out_sample_fmt;
00105     int sample_rates[]={8000,11025,16000,22050,32000};
00106     uint8_t array_in[SAMPLES*8*8];
00107     uint8_t array_mid[SAMPLES*8*8*3];
00108     uint8_t array_out[SAMPLES*8*8+100];
00109     uint8_t *ain[SWR_CH_MAX];
00110     uint8_t *aout[SWR_CH_MAX];
00111     uint8_t *amid[SWR_CH_MAX];
00112 
00113     struct SwrContext * forw_ctx= NULL;
00114     struct SwrContext *backw_ctx= NULL;
00115 
00116     in_sample_rate=16000;
00117     for(osr=0; osr<5; osr++){
00118         out_sample_rate= sample_rates[osr];
00119         for(in_sample_fmt= AV_SAMPLE_FMT_U8; in_sample_fmt<=AV_SAMPLE_FMT_DBL; in_sample_fmt++){
00120             for(out_sample_fmt= AV_SAMPLE_FMT_U8; out_sample_fmt<=AV_SAMPLE_FMT_DBL; out_sample_fmt++){
00121                 for(in_ch_layout_index=0; layouts[in_ch_layout_index]; in_ch_layout_index++){
00122                     int in_ch_count;
00123                     in_ch_layout= layouts[in_ch_layout_index];
00124                     in_ch_count= av_get_channel_layout_nb_channels(in_ch_layout);
00125                     for(out_ch_layout_index=0; layouts[out_ch_layout_index]; out_ch_layout_index++){
00126                         int out_count, mid_count, out_ch_count;
00127                         out_ch_layout= layouts[out_ch_layout_index];
00128                         out_ch_count= av_get_channel_layout_nb_channels(out_ch_layout);
00129                         fprintf(stderr, "ch %d->%d, rate:%5d->%5d, fmt:%s->%s",
00130                                in_ch_count, out_ch_count,
00131                                in_sample_rate, out_sample_rate,
00132                                av_get_sample_fmt_name(in_sample_fmt), av_get_sample_fmt_name(out_sample_fmt));
00133                         forw_ctx  = swr_alloc_set_opts(forw_ctx, out_ch_layout, av_get_alt_sample_fmt(out_sample_fmt, 1), out_sample_rate,
00134                                                                   in_ch_layout, av_get_alt_sample_fmt( in_sample_fmt, 1),  in_sample_rate,
00135                                                        0, 0);
00136                         backw_ctx = swr_alloc_set_opts(backw_ctx, in_ch_layout,  in_sample_fmt,             in_sample_rate,
00137                                                                  out_ch_layout, av_get_alt_sample_fmt(out_sample_fmt, 1), out_sample_rate,
00138                                                        0, 0);
00139                         if(swr_init( forw_ctx) < 0)
00140                             fprintf(stderr, "swr_init(->) failed\n");
00141                         if(swr_init(backw_ctx) < 0)
00142                             fprintf(stderr, "swr_init(<-) failed\n");
00143                         if(!forw_ctx)
00144                             fprintf(stderr, "Failed to init forw_cts\n");
00145                         if(!backw_ctx)
00146                             fprintf(stderr, "Failed to init backw_ctx\n");
00147                                //FIXME test planar
00148                         setup_array(ain , array_in , av_get_alt_sample_fmt( in_sample_fmt, 1),   SAMPLES);
00149                         setup_array(amid, array_mid, av_get_alt_sample_fmt(out_sample_fmt, 1), 3*SAMPLES);
00150                         setup_array(aout, array_out,  in_sample_fmt           ,   SAMPLES);
00151                         for(ch=0; ch<in_ch_count; ch++){
00152                             for(i=0; i<SAMPLES; i++)
00153                                 set(ain, ch, i, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1), sin(i*i*3/SAMPLES));
00154                         }
00155                         mid_count= swr_convert(forw_ctx, amid, 3*SAMPLES, ain, SAMPLES);
00156                         out_count= swr_convert(backw_ctx,aout, SAMPLES, amid, mid_count);
00157 
00158                         for(ch=0; ch<in_ch_count; ch++){
00159                             double sse, x, maxdiff=0;
00160                             double sum_a= 0;
00161                             double sum_b= 0;
00162                             double sum_aa= 0;
00163                             double sum_bb= 0;
00164                             double sum_ab= 0;
00165                             for(i=0; i<out_count; i++){
00166                                 double a= get(ain , ch, i, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
00167                                 double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
00168                                 sum_a += a;
00169                                 sum_b += b;
00170                                 sum_aa+= a*a;
00171                                 sum_bb+= b*b;
00172                                 sum_ab+= a*b;
00173                                 maxdiff= FFMAX(maxdiff, FFABS(a-b));
00174                             }
00175                             x = sum_ab/sum_bb;
00176                             sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
00177 
00178                             fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/out_count), x, maxdiff, out_count);
00179                         }
00180 
00181                         flush_count=swr_convert(backw_ctx,aout, SAMPLES, 0, 0);
00182                         if(flush_count){
00183                             for(ch=0; ch<in_ch_count; ch++){
00184                                 double sse, x, maxdiff=0;
00185                                 double sum_a= 0;
00186                                 double sum_b= 0;
00187                                 double sum_aa= 0;
00188                                 double sum_bb= 0;
00189                                 double sum_ab= 0;
00190                                 for(i=0; i<flush_count; i++){
00191                                     double a= get(ain , ch, i+out_count, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1));
00192                                     double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
00193                                     sum_a += a;
00194                                     sum_b += b;
00195                                     sum_aa+= a*a;
00196                                     sum_bb+= b*b;
00197                                     sum_ab+= a*b;
00198                                     maxdiff= FFMAX(maxdiff, FFABS(a-b));
00199                                 }
00200                                 x = sum_ab/sum_bb;
00201                                 sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
00202 
00203                                 fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/flush_count), x, maxdiff, flush_count);
00204                             }
00205                         }
00206 
00207 
00208                         fprintf(stderr, "\n");
00209                     }
00210                 }
00211             }
00212         }
00213     }
00214 
00215     return 0;
00216 }
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