| /* |
| * 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(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f){ |
| const uint8_t *p; |
| if(av_sample_fmt_is_planar(f)){ |
| f= av_get_alt_sample_fmt(f, 0); |
| 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_assert0(0); |
| } |
| } |
| |
| static void set(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f, double v){ |
| uint8_t *p; |
| if(av_sample_fmt_is_planar(f)){ |
| f= av_get_alt_sample_fmt(f, 0); |
| 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(av_sample_fmt_is_planar(format)){ |
| 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, flush_count; |
| 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]; |
| |
| 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++){ |
| int in_ch_count; |
| in_ch_layout= layouts[in_ch_layout_index]; |
| 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_count; |
| out_ch_layout= layouts[out_ch_layout_index]; |
| 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_alloc_set_opts(forw_ctx, out_ch_layout, av_get_alt_sample_fmt(out_sample_fmt, 1), out_sample_rate, |
| in_ch_layout, av_get_alt_sample_fmt( in_sample_fmt, 1), in_sample_rate, |
| 0, 0); |
| backw_ctx = swr_alloc_set_opts(backw_ctx, in_ch_layout, in_sample_fmt, in_sample_rate, |
| out_ch_layout, av_get_alt_sample_fmt(out_sample_fmt, 1), 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 , av_get_alt_sample_fmt( in_sample_fmt, 1), SAMPLES); |
| setup_array(amid, array_mid, av_get_alt_sample_fmt(out_sample_fmt, 1), 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, av_get_alt_sample_fmt(in_sample_fmt, 1), 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, av_get_alt_sample_fmt(in_sample_fmt, 1)); |
| 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); |
| } |
| |
| flush_count=swr_convert(backw_ctx,aout, SAMPLES, 0, 0); |
| if(flush_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<flush_count; i++){ |
| double a= get(ain , ch, i+out_count, in_ch_count, av_get_alt_sample_fmt(in_sample_fmt, 1)); |
| 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/flush_count), x, maxdiff, flush_count); |
| } |
| } |
| |
| |
| fprintf(stderr, "\n"); |
| } |
| } |
| } |
| } |
| } |
| |
| return 0; |
| } |
