FFmpeg: libswresample/swresample-test.c Source File

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libswresample

swresample-test.c

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1 /*

4 *

5 * This file is part of libswresample

6 *

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.

11 *

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.

16 *

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

20 */

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"

28 #undef time

29 #include "time.h"

30 #undef fprintf

32 #define SAMPLES 1000

34 #define SWR_CH_MAX 32

36 #define ASSERT_LEVEL 2

38 static double get(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f){

39 const uint8_t *p;

40 if(av_sample_fmt_is_planar(f)){

41 f= av_get_alt_sample_fmt(f, 0);

42 p= a[ch];

43 }else{

44 p= a[0];

45 index= ch + index*ch_count;

46 }

48 switch(f){

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);

55 }

56 }

58 static void set(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f, double v){

59 uint8_t *p;

60 if(av_sample_fmt_is_planar(f)){

61 f= av_get_alt_sample_fmt(f, 0);

62 p= a[ch];

63 }else{

64 p= a[0];

65 index= ch + index*ch_count;

66 }

67 switch(f){

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);

74 }

75 }

77 static void shift(uint8_t *a[], int index, int ch_count, enum AVSampleFormat f){

78 int ch;

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);

84 }else{

85 a[0] += index*ch_count*av_get_bytes_per_sample(f);

86 }

87 }

89 static const enum AVSampleFormat formats[] = {

90 AV_SAMPLE_FMT_S16,

91 AV_SAMPLE_FMT_FLTP,

92 AV_SAMPLE_FMT_S16P,

93 AV_SAMPLE_FMT_FLT,

94 AV_SAMPLE_FMT_S32P,

95 AV_SAMPLE_FMT_S32,

96 AV_SAMPLE_FMT_U8P,

97 AV_SAMPLE_FMT_U8,

98 AV_SAMPLE_FMT_DBLP,

99 AV_SAMPLE_FMT_DBL,

100 };

101

102 static const int rates[] = {

103 8000,

104 11025,

105 16000,

106 22050,

107 32000,

108 48000,

109 };

110

111 uint64_t layouts[]={

112 AV_CH_LAYOUT_MONO ,

113 AV_CH_LAYOUT_STEREO ,

114 AV_CH_LAYOUT_2_1 ,

115 AV_CH_LAYOUT_SURROUND ,

116 AV_CH_LAYOUT_4POINT0 ,

117 AV_CH_LAYOUT_2_2 ,

118 AV_CH_LAYOUT_QUAD ,

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 ,

126 };

127

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)){

130 int i;

131 int plane_size= av_get_bytes_per_sample(format&0xFF)*samples;

132 format&=0xFF;

133 for(i=0; i<SWR_CH_MAX; i++){

134 out[i]= in + i*plane_size;

135 }

136 }else{

137 out[0]= in;

138 }

139 }

140

141 static int cmp(const int *a, const int *b){

142 return *a - *b;

143 }

144

145 static void audiogen(void *data, enum AVSampleFormat sample_fmt,

146 int channels, int sample_rate, int nb_samples)

147 {

148 int i, ch, k;

149 double v, f, a, ampa;

150 double tabf1[SWR_CH_MAX];

151 double tabf2[SWR_CH_MAX];

152 double taba[SWR_CH_MAX];

153 unsigned static rnd;

154

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)

158 k = 0;

159

160 /* 1 second of single freq sinus at 1000 Hz */

161 a = 0;

162 for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) {

163 v = sin(a) * 0.30;

164 for (ch = 0; ch < channels; ch++)

165 PUT_SAMPLE

166 a += M_PI * 1000.0 * 2.0 / sample_rate;

167 }

168

169 /* 1 second of varying frequency between 100 and 10000 Hz */

170 a = 0;

171 for (i = 0; i < 1 * sample_rate && k < nb_samples; i++, k++) {

172 v = sin(a) * 0.30;

173 for (ch = 0; ch < channels; ch++)

174 PUT_SAMPLE

175 f = 100.0 + (((10000.0 - 100.0) * i) / sample_rate);

176 a += M_PI * f * 2.0 / sample_rate;

177 }

178

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++)

183 PUT_SAMPLE

184 }

185

186 /* 0.5 second of high amplitude white noise */

187 for (i = 0; i < sample_rate / 2 && k < nb_samples; i++, k++) {

188 v = dbl_rand(rnd);

189 for (ch = 0; ch < channels; ch++)

190 PUT_SAMPLE

191 }

192

193 /* 1 second of unrelated ramps for each channel */

194 for (ch = 0; ch < channels; ch++) {

195 taba[ch] = 0;

196 tabf1[ch] = 100 + uint_rand(rnd) % 5000;

197 tabf2[ch] = 100 + uint_rand(rnd) % 5000;

198 }

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;

202 PUT_SAMPLE

203 f = tabf1[ch] + (((tabf2[ch] - tabf1[ch]) * i) / sample_rate);

204 taba[ch] += M_PI * f * 2.0 / sample_rate;

205 }

206 }

207

208 /* 2 seconds of 500 Hz with varying volume */

209 a = 0;

210 ampa = 0;

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;

214 if (ch & 1)

215 amp = 0.30 - amp;

216 v = sin(a) * amp;

217 PUT_SAMPLE

218 a += M_PI * 500.0 * 2.0 / sample_rate;

219 ampa += M_PI * 2.0 / sample_rate;

220 }

221 }

222 }

223

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];

234 int flush_i=0;

235 int mode;

236 int num_tests = 10000;

237 uint32_t seed = 0;

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);

241 int test;

242 int specific_test= -1;

243

244 struct SwrContext * forw_ctx= NULL;

245 struct SwrContext *backw_ctx= NULL;

246

247 if (argc > 1) {

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);

251 return 0;

252 }

253 num_tests = strtol(argv[1], NULL, 0);

254 if(num_tests < 0) {

255 num_tests = -num_tests;

256 rand_seed = time(0);

257 }

258 if(num_tests<= 0 || num_tests>max_tests)

259 num_tests = max_tests;

260 if(argc > 2) {

261 specific_test = strtol(argv[1], NULL, 0);

262 }

263 }

264

265 for(i=0; i<max_tests; i++)

266 remaining_tests[i] = i;

267

268 for(test=0; test<num_tests; test++){

269 unsigned r;

270 uint_rand(seed);

271 r = (seed * (uint64_t)(max_tests - test)) >>32;

272 FFSWAP(int, remaining_tests[r], remaining_tests[max_tests - test - 1]);

273 }

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];

280 int in_ch_count;

281 int out_count, mid_count, out_ch_count;

282

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);

288 av_assert0(!vector);

289

290 if(specific_test == 0){

291 if(out_sample_rate != in_sample_rate || in_ch_layout != out_ch_layout)

292 continue;

293 }

294

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,

305 0, 0);

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,

308 0, 0);

309 if(!forw_ctx) {

310 fprintf(stderr, "Failed to init forw_cts\n");

311 return 1;

312 }

313 if(!backw_ctx) {

314 fprintf(stderr, "Failed to init backw_ctx\n");

315 return 1;

316 }

317 if(swr_init( forw_ctx) < 0)

318 fprintf(stderr, "swr_init(->) failed\n");

319 if(swr_init(backw_ctx) < 0)

320 fprintf(stderr, "swr_init(<-) failed\n");

321 //FIXME test planar

322 setup_array(ain , array_in , in_sample_fmt, SAMPLES);

323 setup_array(amid, array_mid, out_sample_fmt, 3*SAMPLES);

324 setup_array(aout, array_out, in_sample_fmt , SAMPLES);

325 #if 0

326 for(ch=0; ch<in_ch_count; ch++){

327 for(i=0; i<SAMPLES; i++)

328 set(ain, ch, i, in_ch_count, in_sample_fmt, sin(i*i*3/SAMPLES));

329 }

330 #else

331 audiogen(ain, in_sample_fmt, in_ch_count, SAMPLES/6+1, SAMPLES);

332 #endif

333 mode = uint_rand(rand_seed) % 3;

334 if(mode==0 /*|| out_sample_rate == in_sample_rate*/) {

335 mid_count= swr_convert(forw_ctx, amid, 3*SAMPLES, (const uint8_t **)ain, SAMPLES);

336 } else if(mode==1){

337 mid_count= swr_convert(forw_ctx, amid, 0, (const uint8_t **)ain, SAMPLES);

338 mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, (const uint8_t **)ain, 0);

339 } else {

340 int tmp_count;

341 mid_count= swr_convert(forw_ctx, amid, 0, (const uint8_t **)ain, 1);

342 av_assert0(mid_count==0);

343 shift(ain, 1, in_ch_count, in_sample_fmt);

344 mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, (const uint8_t **)ain, 0);

345 shift(amid, mid_count, out_ch_count, out_sample_fmt); tmp_count = mid_count;

346 mid_count+=swr_convert(forw_ctx, amid, 2, (const uint8_t **)ain, 2);

347 shift(amid, mid_count-tmp_count, out_ch_count, out_sample_fmt); tmp_count = mid_count;

348 shift(ain, 2, in_ch_count, in_sample_fmt);

349 mid_count+=swr_convert(forw_ctx, amid, 1, (const uint8_t **)ain, SAMPLES-3);

350 shift(amid, mid_count-tmp_count, out_ch_count, out_sample_fmt); tmp_count = mid_count;

351 shift(ain, -3, in_ch_count, in_sample_fmt);

352 mid_count+=swr_convert(forw_ctx, amid, 3*SAMPLES, (const uint8_t **)ain, 0);

353 shift(amid, -tmp_count, out_ch_count, out_sample_fmt);

354 }

355 out_count= swr_convert(backw_ctx,aout, SAMPLES, (const uint8_t **)amid, mid_count);

356

357 for(ch=0; ch<in_ch_count; ch++){

358 double sse, maxdiff=0;

359 double sum_a= 0;

360 double sum_b= 0;

361 double sum_aa= 0;

362 double sum_bb= 0;

363 double sum_ab= 0;

364 for(i=0; i<out_count; i++){

365 double a= get(ain , ch, i, in_ch_count, in_sample_fmt);

366 double b= get(aout, ch, i, in_ch_count, in_sample_fmt);

367 sum_a += a;

368 sum_b += b;

369 sum_aa+= a*a;

370 sum_bb+= b*b;

371 sum_ab+= a*b;

372 maxdiff= FFMAX(maxdiff, FFABS(a-b));

373 }

374 sse= sum_aa + sum_bb - 2*sum_ab;

375 if(sse < 0 && sse > -0.00001) sse=0; //fix rounding error

376

377 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);

378 }

379

380 flush_i++;

381 flush_i%=21;

382 flush_count = swr_convert(backw_ctx,aout, flush_i, 0, 0);

383 shift(aout, flush_i, in_ch_count, in_sample_fmt);

384 flush_count+= swr_convert(backw_ctx,aout, SAMPLES-flush_i, 0, 0);

385 shift(aout, -flush_i, in_ch_count, in_sample_fmt);

386 if(flush_count){

387 for(ch=0; ch<in_ch_count; ch++){

388 double sse, maxdiff=0;

389 double sum_a= 0;

390 double sum_b= 0;

391 double sum_aa= 0;

392 double sum_bb= 0;

393 double sum_ab= 0;

394 for(i=0; i<flush_count; i++){

395 double a= get(ain , ch, i+out_count, in_ch_count, in_sample_fmt);

396 double b= get(aout, ch, i, in_ch_count, in_sample_fmt);

397 sum_a += a;

398 sum_b += b;

399 sum_aa+= a*a;

400 sum_bb+= b*b;

401 sum_ab+= a*b;

402 maxdiff= FFMAX(maxdiff, FFABS(a-b));

403 }

404 sse= sum_aa + sum_bb - 2*sum_ab;

405 if(sse < 0 && sse > -0.00001) sse=0; //fix rounding error

406

407 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);

408 }

409 }

410

411

412 fprintf(stderr, "\n");

413 }

414

415 return 0;

416 }

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