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- /*
- * 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;
- }
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