diff options
Diffstat (limited to 'libswresample/swresample_test.c')
| -rw-r--r-- | libswresample/swresample_test.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/libswresample/swresample_test.c b/libswresample/swresample_test.c new file mode 100644 index 0000000..61e1b09 --- /dev/null +++ b/libswresample/swresample_test.c @@ -0,0 +1,186 @@ +/* + * 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; +} |
