/* * 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 uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f){ const uint8_t *p; if(f>=0x100){ f&=0xFF; p= a[ch]; }else{ p= a[0]; index= ch + index*ch_count; } 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(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f, double v){ uint8_t *p; if(f>=0x100){ f&=0xFF; p= a[ch]; }else{ p= a[0]; index= ch + index*ch_count; } 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 }; static void setup_array(uint8_t *out[SWR_CH_MAX], uint8_t *in, enum AVSampleFormat format, int samples){ if(format >= 0x100){ int i; int plane_size= av_get_bytes_per_sample(format&0xFF)*samples; format&=0xFF; for(i=0; i<SWR_CH_MAX; i++){ out[i]= in + i*plane_size; } }else{ out[0]= in; } } 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]; uint8_t *ain[SWR_CH_MAX]; uint8_t *aout[SWR_CH_MAX]; uint8_t *amid[SWR_CH_MAX]; int planar_in=256, planar_out=256; 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+planar_out, out_sample_rate, in_ch_layout, in_sample_fmt+planar_in , 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+planar_out, 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 setup_array(ain , array_in , in_sample_fmt+planar_in , SAMPLES); setup_array(amid, array_mid, out_sample_fmt+planar_out, 3*SAMPLES); setup_array(aout, array_out, in_sample_fmt , SAMPLES); for(ch=0; ch<in_ch_count; ch++){ for(i=0; i<SAMPLES; i++) set(ain, ch, i, in_ch_count, in_sample_fmt+planar_in, sin(i*i*3/SAMPLES)); } mid_count= swr_convert(forw_ctx, amid, 3*SAMPLES, ain, SAMPLES); out_count= swr_convert(backw_ctx,aout, SAMPLES, amid, 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<out_count; i++){ double a= get(ain , ch, i, in_ch_count, in_sample_fmt+planar_in); double b= get(aout, 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/out_count), x, maxdiff, out_count); } fprintf(stderr, "\n"); } } } } } return 0; }