150 lines
6.9 KiB
C
150 lines
6.9 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2011 Michael Niedermayer (michaelni@gmx.at)
|
||
|
|
*
|
||
|
|
* This file is part of libswresample
|
||
|
|
*
|
||
|
|
* libswresample is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* libswresample is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with libswresample; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "libavutil/avassert.h"
|
||
|
|
#include "libavutil/common.h"
|
||
|
|
#include "libavutil/audioconvert.h"
|
||
|
|
#include "swresample.h"
|
||
|
|
#undef fprintf
|
||
|
|
|
||
|
|
#define SAMPLES 1000
|
||
|
|
|
||
|
|
#define ASSERT_LEVEL 2
|
||
|
|
|
||
|
|
static double get(const void *p, int index, enum AVSampleFormat f){
|
||
|
|
switch(f){
|
||
|
|
case AV_SAMPLE_FMT_U8 : return ((const uint8_t*)p)[index]/255.0*2-1.0;
|
||
|
|
case AV_SAMPLE_FMT_S16: return ((const int16_t*)p)[index]/32767.0;
|
||
|
|
case AV_SAMPLE_FMT_S32: return ((const int32_t*)p)[index]/2147483647.0;
|
||
|
|
case AV_SAMPLE_FMT_FLT: return ((const float *)p)[index];
|
||
|
|
case AV_SAMPLE_FMT_DBL: return ((const double *)p)[index];
|
||
|
|
default: av_assert2(0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void set(void *p, int index, enum AVSampleFormat f, double v){
|
||
|
|
switch(f){
|
||
|
|
case AV_SAMPLE_FMT_U8 : ((uint8_t*)p)[index]= (v+1.0)*255.0/2; break;
|
||
|
|
case AV_SAMPLE_FMT_S16: ((int16_t*)p)[index]= v*32767; break;
|
||
|
|
case AV_SAMPLE_FMT_S32: ((int32_t*)p)[index]= v*2147483647; break;
|
||
|
|
case AV_SAMPLE_FMT_FLT: ((float *)p)[index]= v; break;
|
||
|
|
case AV_SAMPLE_FMT_DBL: ((double *)p)[index]= v; break;
|
||
|
|
default: av_assert2(0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
uint64_t layouts[]={
|
||
|
|
AV_CH_LAYOUT_MONO ,
|
||
|
|
AV_CH_LAYOUT_STEREO ,
|
||
|
|
AV_CH_LAYOUT_2_1 ,
|
||
|
|
AV_CH_LAYOUT_SURROUND ,
|
||
|
|
AV_CH_LAYOUT_4POINT0 ,
|
||
|
|
AV_CH_LAYOUT_2_2 ,
|
||
|
|
AV_CH_LAYOUT_QUAD ,
|
||
|
|
AV_CH_LAYOUT_5POINT0 ,
|
||
|
|
AV_CH_LAYOUT_5POINT1 ,
|
||
|
|
AV_CH_LAYOUT_5POINT0_BACK ,
|
||
|
|
AV_CH_LAYOUT_5POINT1_BACK ,
|
||
|
|
AV_CH_LAYOUT_7POINT0 ,
|
||
|
|
AV_CH_LAYOUT_7POINT1 ,
|
||
|
|
AV_CH_LAYOUT_7POINT1_WIDE ,
|
||
|
|
0
|
||
|
|
};
|
||
|
|
|
||
|
|
int main(int argc, char **argv){
|
||
|
|
int in_sample_rate, out_sample_rate, ch ,i, in_ch_layout_index, out_ch_layout_index, osr;
|
||
|
|
uint64_t in_ch_layout, out_ch_layout;
|
||
|
|
enum AVSampleFormat in_sample_fmt, out_sample_fmt;
|
||
|
|
int sample_rates[]={8000,11025,16000,22050,32000};
|
||
|
|
uint8_t array_in[SAMPLES*8*8];
|
||
|
|
uint8_t array_mid[SAMPLES*8*8*3];
|
||
|
|
uint8_t array_out[SAMPLES*8*8+100];
|
||
|
|
struct SwrContext * forw_ctx= NULL;
|
||
|
|
struct SwrContext *backw_ctx= NULL;
|
||
|
|
|
||
|
|
in_sample_rate=16000;
|
||
|
|
for(osr=0; osr<5; osr++){
|
||
|
|
out_sample_rate= sample_rates[osr];
|
||
|
|
for(in_sample_fmt= AV_SAMPLE_FMT_U8; in_sample_fmt<=AV_SAMPLE_FMT_DBL; in_sample_fmt++){
|
||
|
|
for(out_sample_fmt= AV_SAMPLE_FMT_U8; out_sample_fmt<=AV_SAMPLE_FMT_DBL; out_sample_fmt++){
|
||
|
|
for(in_ch_layout_index=0; layouts[in_ch_layout_index]; in_ch_layout_index++){
|
||
|
|
in_ch_layout= layouts[in_ch_layout_index];
|
||
|
|
int in_ch_count= av_get_channel_layout_nb_channels(in_ch_layout);
|
||
|
|
for(out_ch_layout_index=0; layouts[out_ch_layout_index]; out_ch_layout_index++){
|
||
|
|
int out_count, mid_count;
|
||
|
|
out_ch_layout= layouts[out_ch_layout_index];
|
||
|
|
int out_ch_count= av_get_channel_layout_nb_channels(out_ch_layout);
|
||
|
|
fprintf(stderr, "ch %d->%d, rate:%5d->%5d, fmt:%s->%s",
|
||
|
|
in_ch_count, out_ch_count,
|
||
|
|
in_sample_rate, out_sample_rate,
|
||
|
|
av_get_sample_fmt_name(in_sample_fmt), av_get_sample_fmt_name(out_sample_fmt));
|
||
|
|
forw_ctx = swr_alloc2(forw_ctx, out_ch_layout, out_sample_fmt, out_sample_rate,
|
||
|
|
in_ch_layout, in_sample_fmt, in_sample_rate, 0, 0);
|
||
|
|
backw_ctx = swr_alloc2(backw_ctx,in_ch_layout, in_sample_fmt, in_sample_rate,
|
||
|
|
out_ch_layout, out_sample_fmt, out_sample_rate, 0, 0);
|
||
|
|
if(swr_init( forw_ctx) < 0)
|
||
|
|
fprintf(stderr, "swr_init(->) failed\n");
|
||
|
|
if(swr_init(backw_ctx) < 0)
|
||
|
|
fprintf(stderr, "swr_init(<-) failed\n");
|
||
|
|
if(!forw_ctx)
|
||
|
|
fprintf(stderr, "Failed to init forw_cts\n");
|
||
|
|
if(!backw_ctx)
|
||
|
|
fprintf(stderr, "Failed to init backw_ctx\n");
|
||
|
|
//FIXME test planar
|
||
|
|
for(ch=0; ch<in_ch_count; ch++){
|
||
|
|
for(i=0; i<SAMPLES; i++)
|
||
|
|
set(array_in, ch + i*in_ch_count, in_sample_fmt, sin(i*i*3/SAMPLES));
|
||
|
|
}
|
||
|
|
mid_count= swr_convert(forw_ctx, ( uint8_t*[]){array_mid}, 3*SAMPLES,
|
||
|
|
(const uint8_t*[]){array_in }, SAMPLES);
|
||
|
|
out_count= swr_convert(backw_ctx,( uint8_t*[]){array_out}, 3*SAMPLES,
|
||
|
|
(const uint8_t*[]){array_mid}, mid_count);
|
||
|
|
for(ch=0; ch<in_ch_count; ch++){
|
||
|
|
double sse, x, maxdiff=0;
|
||
|
|
double sum_a= 0;
|
||
|
|
double sum_b= 0;
|
||
|
|
double sum_aa= 0;
|
||
|
|
double sum_bb= 0;
|
||
|
|
double sum_ab= 0;
|
||
|
|
for(i=0; i<SAMPLES; i++){
|
||
|
|
double a= get(array_in , ch + i*in_ch_count, in_sample_fmt);
|
||
|
|
double b= get(array_out, ch + i*in_ch_count, in_sample_fmt);
|
||
|
|
sum_a += a;
|
||
|
|
sum_b += b;
|
||
|
|
sum_aa+= a*a;
|
||
|
|
sum_bb+= b*b;
|
||
|
|
sum_ab+= a*b;
|
||
|
|
maxdiff= FFMAX(maxdiff, FFABS(a-b));
|
||
|
|
}
|
||
|
|
x = sum_ab/sum_bb;
|
||
|
|
sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
|
||
|
|
|
||
|
|
fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/SAMPLES), x, maxdiff, out_count);
|
||
|
|
}
|
||
|
|
fprintf(stderr, "\n");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|