2 * Copyright (C) 2011-2012 Michael Niedermayer (michaelni@gmx.at)
3 * Copyright (c) 2002 Fabrice Bellard
5 * This file is part of libswresample
7 * libswresample is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * libswresample is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with libswresample; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/avassert.h"
23 #include "libavutil/channel_layout.h"
24 #include "libavutil/common.h"
25 #include "libavutil/opt.h"
26 #include "swresample.h"
36 #define ASSERT_LEVEL 2
38 static double get(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f){
40 if(av_sample_fmt_is_planar(f)){
41 f= av_get_alt_sample_fmt(f, 0);
45 index= ch + index*ch_count;
49 case AV_SAMPLE_FMT_U8 : return ((const uint8_t*)p)[index]/127.0-1.0;
50 case AV_SAMPLE_FMT_S16: return ((const int16_t*)p)[index]/32767.0;
51 case AV_SAMPLE_FMT_S32: return ((const int32_t*)p)[index]/2147483647.0;
52 case AV_SAMPLE_FMT_FLT: return ((const float *)p)[index];
53 case AV_SAMPLE_FMT_DBL: return ((const double *)p)[index];
54 default: av_assert0(0);
58 static void set(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f, double v){
60 if(av_sample_fmt_is_planar(f)){
61 f= av_get_alt_sample_fmt(f, 0);
65 index= ch + index*ch_count;
68 case AV_SAMPLE_FMT_U8 : ((uint8_t*)p)[index]= av_clip_uint8 (lrint((v+1.0)*127)); break;
69 case AV_SAMPLE_FMT_S16: ((int16_t*)p)[index]= av_clip_int16 (lrint(v*32767)); break;
70 case AV_SAMPLE_FMT_S32: ((int32_t*)p)[index]= av_clipl_int32(llrint(v*2147483647)); break;
71 case AV_SAMPLE_FMT_FLT: ((float *)p)[index]= v; break;
72 case AV_SAMPLE_FMT_DBL: ((double *)p)[index]= v; break;
73 default: av_assert2(0);
77 static void shift(uint8_t *a[], int index, int ch_count, enum AVSampleFormat f){
80 if(av_sample_fmt_is_planar(f)){
81 f= av_get_alt_sample_fmt(f, 0);
82 for(ch= 0; ch<ch_count; ch++)
83 a[ch] += index*av_get_bytes_per_sample(f);
85 a[0] += index*ch_count*av_get_bytes_per_sample(f);
89 static const enum AVSampleFormat formats[] = {
102 static const int rates[] = {
113 AV_CH_LAYOUT_STEREO ,
115 AV_CH_LAYOUT_SURROUND ,
116 AV_CH_LAYOUT_4POINT0 ,
119 AV_CH_LAYOUT_5POINT0 ,
120 AV_CH_LAYOUT_5POINT1 ,
121 AV_CH_LAYOUT_5POINT0_BACK ,
122 AV_CH_LAYOUT_5POINT1_BACK ,
123 AV_CH_LAYOUT_7POINT0 ,
124 AV_CH_LAYOUT_7POINT1 ,
125 AV_CH_LAYOUT_7POINT1_WIDE ,
128 static void setup_array(uint8_t *out[SWR_CH_MAX], uint8_t *in, enum AVSampleFormat format, int samples){
129 if(av_sample_fmt_is_planar(format)){
131 int plane_size= av_get_bytes_per_sample(format&0xFF)*samples;
133 for(i=0; i<SWR_CH_MAX; i++){
134 out[i]= in + i*plane_size;
141 static int cmp(const int *a, const int *b){
145 static void audiogen(void *data, enum AVSampleFormat sample_fmt,
146 int channels, int sample_rate, int nb_samples)
149 double v, f, a, ampa;
150 double tabf1[SWR_CH_MAX];
151 double tabf2[SWR_CH_MAX];
152 double taba[SWR_CH_MAX];
155 #define PUT_SAMPLE set(data, ch, k, channels, sample_fmt, v);
156 #define uint_rand(x) ((x) = (x) * 1664525 + 1013904223)
157 #define dbl_rand(x) (uint_rand(x)*2.0 / (double)UINT_MAX - 1)
160 /* 1 second of single freq sinus at 1000 Hz */
162 for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) {
164 for (ch = 0; ch < channels; ch++)
166 a += M_PI * 1000.0 * 2.0 / sample_rate;
169 /* 1 second of varying frequency between 100 and 10000 Hz */
171 for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) {
173 for (ch = 0; ch < channels; ch++)
175 f = 100.0 + (((10000.0 - 100.0) * i) / sample_rate);
176 a += M_PI * f * 2.0 / sample_rate;
179 /* 0.5 second of low amplitude white noise */
180 for (i = 0; i < sample_rate / 2 && k < nb_samples; i++, k++) {
181 v = dbl_rand(rnd) * 0.30;
182 for (ch = 0; ch < channels; ch++)
186 /* 0.5 second of high amplitude white noise */
187 for (i = 0; i < sample_rate / 2 && k < nb_samples; i++, k++) {
189 for (ch = 0; ch < channels; ch++)
193 /* 1 second of unrelated ramps for each channel */
194 for (ch = 0; ch < channels; ch++) {
196 tabf1[ch] = 100 + uint_rand(rnd) % 5000;
197 tabf2[ch] = 100 + uint_rand(rnd) % 5000;
199 for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) {
200 for (ch = 0; ch < channels; ch++) {
201 v = sin(taba[ch]) * 0.30;
203 f = tabf1[ch] + (((tabf2[ch] - tabf1[ch]) * i) / sample_rate);
204 taba[ch] += M_PI * f * 2.0 / sample_rate;
208 /* 2 seconds of 500 Hz with varying volume */
211 for (i = 0; i < 2 * sample_rate && k < nb_samples; i++, k++) {
212 for (ch = 0; ch < channels; ch++) {
213 double amp = (1.0 + sin(ampa)) * 0.15;
218 a += M_PI * 500.0 * 2.0 / sample_rate;
219 ampa += M_PI * 2.0 / sample_rate;
224 int main(int argc, char **argv){
225 int in_sample_rate, out_sample_rate, ch ,i, flush_count;
226 uint64_t in_ch_layout, out_ch_layout;
227 enum AVSampleFormat in_sample_fmt, out_sample_fmt;
228 uint8_t array_in[SAMPLES*8*8];
229 uint8_t array_mid[SAMPLES*8*8*3];
230 uint8_t array_out[SAMPLES*8*8+100];
231 uint8_t *ain[SWR_CH_MAX];
232 uint8_t *aout[SWR_CH_MAX];
233 uint8_t *amid[SWR_CH_MAX];
236 int num_tests = 10000;
238 uint32_t rand_seed = 0;
239 int remaining_tests[FF_ARRAY_ELEMS(rates) * FF_ARRAY_ELEMS(layouts) * FF_ARRAY_ELEMS(formats) * FF_ARRAY_ELEMS(layouts) * FF_ARRAY_ELEMS(formats)];
240 int max_tests = FF_ARRAY_ELEMS(remaining_tests);
242 int specific_test= -1;
244 struct SwrContext * forw_ctx= NULL;
245 struct SwrContext *backw_ctx= NULL;
248 if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
249 av_log(NULL, AV_LOG_INFO, "Usage: swresample-test [<num_tests>[ <test>]] \n"
250 "num_tests Default is %d\n", num_tests);
253 num_tests = strtol(argv[1], NULL, 0);
255 num_tests = -num_tests;
258 if(num_tests<= 0 || num_tests>max_tests)
259 num_tests = max_tests;
261 specific_test = strtol(argv[1], NULL, 0);
265 for(i=0; i<max_tests; i++)
266 remaining_tests[i] = i;
268 for(test=0; test<num_tests; test++){
271 r = (seed * (uint64_t)(max_tests - test)) >>32;
272 FFSWAP(int, remaining_tests[r], remaining_tests[max_tests - test - 1]);
274 qsort(remaining_tests + max_tests - num_tests, num_tests, sizeof(remaining_tests[0]), (void*)cmp);
275 in_sample_rate=16000;
276 for(test=0; test<num_tests; test++){
277 char in_layout_string[256];
278 char out_layout_string[256];
279 unsigned vector= remaining_tests[max_tests - test - 1];
281 int out_count, mid_count, out_ch_count;
283 in_ch_layout = layouts[vector % FF_ARRAY_ELEMS(layouts)]; vector /= FF_ARRAY_ELEMS(layouts);
284 out_ch_layout = layouts[vector % FF_ARRAY_ELEMS(layouts)]; vector /= FF_ARRAY_ELEMS(layouts);
285 in_sample_fmt = formats[vector % FF_ARRAY_ELEMS(formats)]; vector /= FF_ARRAY_ELEMS(formats);
286 out_sample_fmt = formats[vector % FF_ARRAY_ELEMS(formats)]; vector /= FF_ARRAY_ELEMS(formats);
287 out_sample_rate = rates [vector % FF_ARRAY_ELEMS(rates )]; vector /= FF_ARRAY_ELEMS(rates);
290 if(specific_test == 0){
291 if(out_sample_rate != in_sample_rate || in_ch_layout != out_ch_layout)
295 in_ch_count= av_get_channel_layout_nb_channels(in_ch_layout);
296 out_ch_count= av_get_channel_layout_nb_channels(out_ch_layout);
297 av_get_channel_layout_string( in_layout_string, sizeof( in_layout_string), in_ch_count, in_ch_layout);
298 av_get_channel_layout_string(out_layout_string, sizeof(out_layout_string), out_ch_count, out_ch_layout);
299 fprintf(stderr, "TEST: %s->%s, rate:%5d->%5d, fmt:%s->%s\n",
300 in_layout_string, out_layout_string,
301 in_sample_rate, out_sample_rate,
302 av_get_sample_fmt_name(in_sample_fmt), av_get_sample_fmt_name(out_sample_fmt));
303 forw_ctx = swr_alloc_set_opts(forw_ctx, out_ch_layout, out_sample_fmt, out_sample_rate,
304 in_ch_layout, in_sample_fmt, in_sample_rate,
306 backw_ctx = swr_alloc_set_opts(backw_ctx, in_ch_layout, in_sample_fmt, in_sample_rate,
307 out_ch_layout, out_sample_fmt, out_sample_rate,
310 fprintf(stderr, "Failed to init forw_cts\n");
314 fprintf(stderr, "Failed to init backw_ctx\n");
317 if (uint_rand(rand_seed) % 3 == 0)
318 av_opt_set_int(forw_ctx, "ich", 0, 0);
319 if (uint_rand(rand_seed) % 3 == 0)
320 av_opt_set_int(forw_ctx, "och", 0, 0);
322 if(swr_init( forw_ctx) < 0)
323 fprintf(stderr, "swr_init(->) failed\n");
324 if(swr_init(backw_ctx) < 0)
325 fprintf(stderr, "swr_init(<-) failed\n");
327 setup_array(ain , array_in , in_sample_fmt, SAMPLES);
328 setup_array(amid, array_mid, out_sample_fmt, 3*SAMPLES);
329 setup_array(aout, array_out, in_sample_fmt , SAMPLES);
331 for(ch=0; ch<in_ch_count; ch++){
332 for(i=0; i<SAMPLES; i++)
333 set(ain, ch, i, in_ch_count, in_sample_fmt, sin(i*i*3/SAMPLES));
336 audiogen(ain, in_sample_fmt, in_ch_count, SAMPLES/6+1, SAMPLES);
338 mode = uint_rand(rand_seed) % 3;
339 if(mode==0 /*|| out_sample_rate == in_sample_rate*/) {
340 mid_count= swr_convert(forw_ctx, amid, 3*SAMPLES, (const uint8_t **)ain, SAMPLES);
342 mid_count= swr_convert(forw_ctx, amid, 0, (const uint8_t **)ain, SAMPLES);
343 mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, (const uint8_t **)ain, 0);
346 mid_count= swr_convert(forw_ctx, amid, 0, (const uint8_t **)ain, 1);
347 av_assert0(mid_count==0);
348 shift(ain, 1, in_ch_count, in_sample_fmt);
349 mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, (const uint8_t **)ain, 0);
350 shift(amid, mid_count, out_ch_count, out_sample_fmt); tmp_count = mid_count;
351 mid_count+=swr_convert(forw_ctx, amid, 2, (const uint8_t **)ain, 2);
352 shift(amid, mid_count-tmp_count, out_ch_count, out_sample_fmt); tmp_count = mid_count;
353 shift(ain, 2, in_ch_count, in_sample_fmt);
354 mid_count+=swr_convert(forw_ctx, amid, 1, (const uint8_t **)ain, SAMPLES-3);
355 shift(amid, mid_count-tmp_count, out_ch_count, out_sample_fmt); tmp_count = mid_count;
356 shift(ain, -3, in_ch_count, in_sample_fmt);
357 mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, (const uint8_t **)ain, 0);
358 shift(amid, -tmp_count, out_ch_count, out_sample_fmt);
360 out_count= swr_convert(backw_ctx,aout, SAMPLES, (const uint8_t **)amid, mid_count);
362 for(ch=0; ch<in_ch_count; ch++){
363 double sse, maxdiff=0;
369 for(i=0; i<out_count; i++){
370 double a= get(ain , ch, i, in_ch_count, in_sample_fmt);
371 double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
377 maxdiff= FFMAX(maxdiff, FFABS(a-b));
379 sse= sum_aa + sum_bb - 2*sum_ab;
380 if(sse < 0 && sse > -0.00001) sse=0; //fix rounding error
382 fprintf(stderr, "[e:%f c:%f max:%f] len:%5d\n", out_count ? sqrt(sse/out_count) : 0, sum_ab/(sqrt(sum_aa*sum_bb)), maxdiff, out_count);
387 flush_count = swr_convert(backw_ctx,aout, flush_i, 0, 0);
388 shift(aout, flush_i, in_ch_count, in_sample_fmt);
389 flush_count+= swr_convert(backw_ctx,aout, SAMPLES-flush_i, 0, 0);
390 shift(aout, -flush_i, in_ch_count, in_sample_fmt);
392 for(ch=0; ch<in_ch_count; ch++){
393 double sse, maxdiff=0;
399 for(i=0; i<flush_count; i++){
400 double a= get(ain , ch, i+out_count, in_ch_count, in_sample_fmt);
401 double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
407 maxdiff= FFMAX(maxdiff, FFABS(a-b));
409 sse= sum_aa + sum_bb - 2*sum_ab;
410 if(sse < 0 && sse > -0.00001) sse=0; //fix rounding error
412 fprintf(stderr, "[e:%f c:%f max:%f] len:%5d F:%3d\n", sqrt(sse/flush_count), sum_ab/(sqrt(sum_aa*sum_bb)), maxdiff, flush_count, flush_i);
417 fprintf(stderr, "\n");