test/audio_io_test.c

   1 /*
   2 * Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
   3 *
   4 * Licensed under the Apache License, Version 2.0 (the "License");
   5 * you may not use this file except in compliance with the License.
   6 * You may obtain a copy of the License at
   7 *
   8 * http://www.apache.org/licenses/LICENSE-2.0
   9 *
  10 * Unless required by applicable law or agreed to in writing, software
  11 * distributed under the License is distributed on an "AS IS" BASIS,
  12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 * See the License for the specific language governing permissions and
  14 * limitations under the License.
  15 */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <string.h>
  20 #include <unistd.h>
  21 #include <math.h>
  22 #include <sound_manager.h>
  23 #include <audio_io.h>
  24
  25 #ifndef M_PI
  26 #define M_PI  (3.14159265)
  27 #endif
  28
  29 #define TABLE_SIZE   (200)
  30 typedef struct {
  31         float sine[TABLE_SIZE];
  32         int left_channel;
  33         int right_channel;
  34 } test_wav_t;
  35 test_wav_t test_wav;
  36
  37 static int ch_table[3] = { 0, AUDIO_CHANNEL_MONO, AUDIO_CHANNEL_STEREO };
  38
  39 void play_file(char *file, int length, int ch)
  40 {
  41         audio_out_h output;
  42         FILE *fp = fopen(file, "r");
  43         if (fp == NULL) {
  44                 printf("fopen failed\n");
  45                 return;
  46         }
  47
  48         char *buf = malloc(length);
  49         if (buf == NULL) {
  50                 printf("malloc failed\n");
  51                 fclose(fp);
  52                 return;
  53         }
  54
  55         printf("start to play [%s][%d][%d]\n", file, length, ch);
  56         audio_out_create_new(44100, ch_table[ch], AUDIO_SAMPLE_TYPE_S16_LE, &output);
  57         if (fread(buf, 1, length, fp) != length)
  58                 printf("error!!!!\n");
  59
  60         audio_out_prepare(output);
  61         audio_out_write(output, buf, length);
  62         audio_out_unprepare(output);
  63
  64         audio_out_destroy(output);
  65
  66         fclose(fp);
  67
  68         printf("play done\n");
  69 }
  70
  71 #define DUMP_FILE "/root/test.raw"
  72
  73 void play_file_sample(char *file, int frequency, int ch, int type)
  74 {
  75         audio_out_h output;
  76         int file_size = 0;
  77         int read_bytes = 0;
  78         int buffer_size = 0;
  79         char *buf = NULL;
  80
  81         if (ch < 0 || ch > 2)
  82                 ch = 0;
  83
  84         FILE *fp = fopen(file, "r");
  85         if (fp == NULL) {
  86                 printf("open failed\n");
  87                 return;
  88         }
  89         /* Get the size */
  90         fseek(fp, 0, SEEK_END);
  91         file_size = ftell(fp);
  92         fseek(fp, 0, SEEK_SET);
  93
  94         printf("start to play [%s] of size [%d] with [%d][%d][%d]\n", file, file_size, frequency, ch, type);
  95         if (type)
  96                 audio_out_create_new(frequency, ch_table[ch], AUDIO_SAMPLE_TYPE_S16_LE, &output);
  97         else
  98                 audio_out_create_new(frequency, ch_table[ch], AUDIO_SAMPLE_TYPE_U8, &output);
  99
 100         audio_out_prepare(output);
 101         audio_out_get_buffer_size(output, &buffer_size);
 102
 103         buf = (char *)malloc(buffer_size);
 104         if (buf == NULL) {
 105                 printf("malloc failed\n");
 106                 audio_out_unprepare(output);
 107                 audio_out_destroy(output);
 108                 fclose(fp);
 109                 return;
 110         }
 111
 112         while (file_size > 0) {
 113                 read_bytes = fread(buf, 1, buffer_size, fp);
 114                 printf("Read %d Requested - %d\n", read_bytes, buffer_size);
 115                 audio_out_write(output, buf, read_bytes);
 116                 file_size = file_size - read_bytes;
 117         }
 118
 119         audio_out_unprepare(output);
 120         audio_out_destroy(output);
 121
 122         free(buf);
 123         fclose(fp);
 124         printf("play done\n");
 125 }
 126
 127 int audio_io_test(int length, int num, int ch)
 128 {
 129         int ret, size, i;
 130         audio_in_h input;
 131         if ((ret = audio_in_create(44100, ch_table[ch], AUDIO_SAMPLE_TYPE_S16_LE, &input)) == AUDIO_IO_ERROR_NONE) {
 132                 ret = audio_in_ignore_session(input);
 133                 if (ret != 0) {
 134                         printf("ERROR, set session mix\n");
 135                         audio_in_destroy(input);
 136                         return 0;
 137                 }
 138
 139                 ret = audio_in_prepare(input);
 140                 if (ret != 0) {
 141                         printf("ERROR, prepare\n");
 142                         audio_in_destroy(input);
 143                         return 0;
 144                 }
 145
 146                 FILE *fp = fopen(DUMP_FILE, "wb+");
 147
 148                 if (fp == NULL) {
 149                         printf("ERROR, file open failed\n");
 150                         audio_in_destroy(input);
 151                         return 0;
 152                 }
 153
 154                 if ((ret = audio_in_get_buffer_size(input, &size)) == AUDIO_IO_ERROR_NONE) {
 155                         size = length;
 156                         char *buffer = alloca(size);
 157
 158                         for (i = 0; i < num; i++) {
 159                                 printf("### loop = %d ============== \n", i);
 160                                 if ((ret = audio_in_read(input, (void *)buffer, size)) > AUDIO_IO_ERROR_NONE) {
 161                                         fwrite(buffer, size, sizeof(char), fp);
 162                                         printf("PASS, size=%d, ret=%d\n", size, ret);
 163                                 } else {
 164                                         printf("FAIL, size=%d, ret=%d\n", size, ret);
 165                                 }
 166                         }
 167                 }
 168
 169                 fclose(fp);
 170
 171                 audio_in_destroy(input);
 172         }
 173
 174         play_file(DUMP_FILE, length * num, ch);
 175
 176         return 1;
 177 }
 178
 179 int audio_io_loopback_in_test()
 180 {
 181         int ret, size;
 182         audio_in_h input;
 183         FILE *fp = fopen("/tmp/dump_test.raw", "wb+");
 184
 185         if (fp == NULL) {
 186                 printf("open failed \n");
 187                 return 0;
 188         }
 189
 190         if ((ret = audio_in_create(16000, AUDIO_CHANNEL_MONO, AUDIO_SAMPLE_TYPE_S16_LE, &input)) == AUDIO_IO_ERROR_NONE) {
 191                 ret = audio_in_ignore_session(input);
 192                 if (ret != 0) {
 193                         printf("ERROR, set session mix\n");
 194                         goto exit;
 195                 }
 196
 197                 ret = audio_in_prepare(input);
 198                 if (ret != 0) {
 199                         printf("ERROR, prepare\n");
 200                         goto exit;
 201                 }
 202
 203                 ret = audio_in_get_buffer_size(input, &size);
 204                 if (ret != AUDIO_IO_ERROR_NONE) {
 205                         printf("audio_in_get_buffer_size failed.\n");
 206                         goto exit;
 207                 }
 208
 209                 while (1) {
 210                         char *buffer = alloca(size);
 211                         if ((ret = audio_in_read(input, (void *)buffer, size)) > AUDIO_IO_ERROR_NONE) {
 212                                 fwrite(buffer, size, sizeof(char), fp);
 213                                 printf("PASS, size=%d, ret=%d\n", size, ret);
 214                         } else {
 215                                 printf("FAIL, size=%d, ret=%d\n", size, ret);
 216                         }
 217                 }
 218         }
 219
 220  exit:
 221         audio_in_destroy(input);
 222
 223         fclose(fp);
 224
 225         return ret;
 226
 227 }
 228
 229 int audio_io_loopback_test()
 230 {
 231         int ret, size;
 232         audio_in_h input;
 233         audio_out_h output;
 234         char *buffer = NULL;
 235
 236         ret = audio_in_create(16000, AUDIO_CHANNEL_MONO, AUDIO_SAMPLE_TYPE_S16_LE, &input);
 237         if (ret != AUDIO_IO_ERROR_NONE) {
 238                 printf("audio_in_create_ex failed. \n");
 239                 return 0;
 240         }
 241         ret = audio_out_create_new(16000, AUDIO_CHANNEL_MONO, AUDIO_SAMPLE_TYPE_S16_LE, &output);
 242         if (ret != AUDIO_IO_ERROR_NONE) {
 243                 printf("audio_out_create failed. \n");
 244                 return 0;
 245         }
 246
 247         ret = audio_in_prepare(input);
 248         if (ret != 0) {
 249                 printf("audio_in_prepare failed.\n");
 250                 audio_in_destroy(input);
 251                 return 0;
 252         } else {
 253                 ret = audio_in_get_buffer_size(input, &size);
 254                 if (ret != AUDIO_IO_ERROR_NONE) {
 255                         printf("audio_in_get_buffer_size failed.\n");
 256                         return 0;
 257                 } else {
 258                         printf("size(%d)\n", size);
 259                         buffer = alloca(size);
 260                 }
 261         }
 262
 263         ret = audio_out_prepare(output);
 264         if (ret != 0) {
 265                 printf("audio_out_prepare failed.\n");
 266                 audio_out_destroy(output);
 267                 return 0;
 268         }
 269
 270         if (buffer == NULL) {
 271                 printf("buffer is null\n");
 272                 return 0;
 273         }
 274
 275         while (1) {
 276                 ret = audio_in_read(input, (void *)buffer, size);
 277                 if (ret > AUDIO_IO_ERROR_NONE) {
 278                         ret = audio_out_write(output, buffer, size);
 279                         if (ret > AUDIO_IO_ERROR_NONE)
 280                                 printf("audio read/write success. buffer(%p), size(%d)\n", buffer, size);
 281                         else
 282                                 printf("audio read success, write failed. buffer(%p), size(%d)\n", buffer, size);
 283                 } else
 284                         printf("audio read/write failed. buffer(%p), size(%d)\n", buffer, size);
 285         }
 286
 287 }
 288
 289 audio_in_h input;
 290 audio_out_h output;
 291
 292 FILE *fp_w = NULL;
 293
 294 sound_stream_info_h g_stream_info_read_h = NULL;
 295 sound_stream_info_h g_stream_info_write_h = NULL;
 296
 297 static void focus_callback(sound_stream_info_h stream_info, sound_stream_focus_change_reason_e reason_for_change, const char *additional_info, void *user_data)
 298 {
 299         int ret = 0;
 300         sound_stream_focus_state_e playback_focus_state;
 301         sound_stream_focus_state_e recording_focus_state;
 302         printf("*** focus_callback_read is called, stream_info(%p, read(%p)/write(%p)) ***\n", stream_info, g_stream_info_read_h, g_stream_info_write_h);
 303         printf(" - reason_for_change(%d), additional_info(%s), user_data(%p)\n", reason_for_change, additional_info, user_data);
 304         ret = sound_manager_get_focus_state(stream_info, &playback_focus_state, &recording_focus_state);
 305         if (!ret)
 306                 printf(" - focus_state(playback_focus:%d, recording_focus:%d)\n", playback_focus_state, recording_focus_state);
 307
 308         return;
 309 }
 310
 311 static void _audio_io_stream_read_cb(audio_in_h handle, size_t nbytes, void *user_data)
 312 {
 313         const void *buffer = NULL;
 314         unsigned int len = (unsigned int)nbytes;
 315
 316         if (len > 0) {
 317                 audio_in_peek(handle, &buffer, &len);
 318                 if (fp_w)
 319                         fwrite(buffer, sizeof(char), len, fp_w);
 320                 audio_in_drop(handle);
 321         }
 322 }
 323
 324 static void _audio_io_stream_write_cb(audio_out_h handle, size_t nbytes, void *user_data)
 325 {
 326         short *buffer = NULL;
 327         int ret = 0;
 328         int i = 0;
 329
 330         if (nbytes > 0) {
 331                 buffer = (short *)malloc(nbytes);
 332                 if (buffer == NULL) {
 333                         printf("malloc failed\n");
 334                         return;
 335                 }
 336                 memset(buffer, 0, nbytes);
 337
 338                 for (i = 0; i < nbytes / 2; i += 2) {
 339                         buffer[i] = (short)32768 *test_wav.sine[test_wav.left_channel]; /* left */
 340                         buffer[i + 1] = (short)32768 *test_wav.sine[test_wav.right_channel];    /* right */
 341                         test_wav.left_channel += 1;
 342                         if (test_wav.left_channel >= TABLE_SIZE)
 343                                 test_wav.left_channel -= TABLE_SIZE;
 344                         test_wav.right_channel += 3;
 345                         if (test_wav.right_channel >= TABLE_SIZE)
 346                                 test_wav.right_channel -= TABLE_SIZE;
 347                 }
 348
 349                 ret = audio_out_write(handle, buffer, nbytes);
 350
 351                 free(buffer);
 352         }
 353 }
 354
 355 static void _audio_in_state_cb(audio_in_h handle, audio_io_state_e previous, audio_io_state_e current, bool by_policy, void *user_data)
 356 {
 357         printf(">>> _audio_in_state_cb() : handle(%p), current(%d), previous(%d), by_policy(%d), user_data(%p)\n", handle, current, previous, by_policy, user_data);
 358 }
 359
 360 static void _audio_out_state_cb(audio_in_h handle, audio_io_state_e previous, audio_io_state_e current, bool by_policy, void *user_data)
 361 {
 362         printf(">>> _audio_out_state_cb() : handle(%p), current(%d), previous(%d), by_policy(%d), user_data(%p)\n", handle, current, previous, by_policy, user_data);
 363 }
 364
 365 int _convert_cmd_and_run(char cmd, int mode)
 366 {
 367         int ret = 0;
 368         switch (cmd) {
 369         case 'P':
 370                 if (mode & 0x01)
 371                         ret = audio_out_prepare(output);
 372                 if (mode & 0x02)
 373                         ret = audio_in_prepare(input);
 374                 break;
 375         case 'u':
 376                 if (mode & 0x01)
 377                         ret = audio_out_unprepare(output);
 378                 if (mode & 0x02)
 379                         ret = audio_in_unprepare(input);
 380                 break;
 381         case 'p':
 382                 if (mode & 0x01)
 383                         ret = audio_out_pause(output);
 384                 if (mode & 0x02)
 385                         ret = audio_in_pause(input);
 386                 break;
 387         case 'r':
 388                 if (mode & 0x01)
 389                         ret = audio_out_resume(output);
 390                 if (mode & 0x02)
 391                         ret = audio_in_resume(input);
 392                 break;
 393         case 'd':
 394                 if (mode & 0x01)
 395                         ret = audio_out_drain(output);
 396                 break;
 397         case 'f':
 398                 if (mode & 0x01)
 399                         ret = audio_out_flush(output);
 400                 if (mode & 0x02)
 401                         ret = audio_in_flush(input);
 402                 break;
 403         case 'i':
 404                 ret = sound_manager_create_stream_information(SOUND_STREAM_TYPE_MEDIA, focus_callback, NULL, &g_stream_info_write_h);
 405                 if (ret)
 406                         printf("fail to sound_manager_create_stream_information(), ret(0x%x)\n", ret);
 407                 break;
 408         case 'q':                                       /* quit */
 409                 ret = 1;
 410                 break;
 411         default:
 412                 ret = 1;
 413                 break;
 414         }
 415         return ret;
 416 }
 417
 418 int audio_io_async_test(int mode)
 419 {
 420         int ret, size;
 421         char *buffer = NULL;
 422         int i = 0;
 423
 424         char cmd = 0;
 425         int cmd_ret;
 426
 427         int write_mode = (mode & 0x01);
 428         int read_mode = (mode & 0x02);
 429
 430         sound_stream_focus_state_e playback_focus_state;
 431         sound_stream_focus_state_e recording_focus_state;
 432
 433         if ((write_mode == 0) && (read_mode == 0)) {
 434                 printf("not vaild mode.\n");
 435                 return 0;
 436         }
 437
 438         if (read_mode) {
 439
 440                 printf("audio_in_create\n");
 441                 ret = audio_in_create(44100, AUDIO_CHANNEL_STEREO, AUDIO_SAMPLE_TYPE_S16_LE, &input);
 442                 if (ret != AUDIO_IO_ERROR_NONE) {
 443                         printf("audio_in_create_ex failed. \n");
 444                         return 0;
 445                 }
 446                 printf("audio_in_create success!!! [%p]\n", input);
 447
 448                 ret = audio_in_set_stream_cb(input, _audio_io_stream_read_cb, NULL);
 449                 if (ret != AUDIO_IO_ERROR_NONE) {
 450                         printf("audio_in_set_stream_cb failed. \n");
 451                         goto EXIT;
 452                 }
 453                 printf("audio_in_set_stream_cb success!!! [%p]\n", input);
 454
 455                 ret = audio_in_set_state_changed_cb(input, _audio_in_state_cb, NULL);
 456                 if (ret != AUDIO_IO_ERROR_NONE) {
 457                         printf("audio_out_set_state_changed_cb failed. \n");
 458                         goto EXIT;
 459                 }
 460                 printf("audio_out_set_state_changed_cb success!!! [%p]\n", input);
 461
 462                 ret = sound_manager_create_stream_information(SOUND_STREAM_TYPE_MEDIA, focus_callback, NULL, &g_stream_info_read_h);
 463                 if (ret) {
 464                         printf("fail to sound_manager_create_stream_information(), ret(0x%x)\n", ret);
 465                         goto EXIT;
 466                 }
 467                 ret = audio_in_set_stream_info(input, g_stream_info_read_h);
 468                 if (ret)
 469                         printf("fail to audio_in_set_stream_info(), ret(0x%x)\n", ret);
 470
 471                 ret = sound_manager_acquire_focus(g_stream_info_read_h, SOUND_STREAM_FOCUS_FOR_RECORDING, NULL);
 472                 if (ret) {
 473                         printf("fail to sound_manager_acquire_focus() for RECORDING, ret(0x%x)\n", ret);
 474                         goto EXIT;
 475                 }
 476
 477                 fp_w = fopen("/tmp/pcm_w.raw", "w");
 478         }
 479
 480         if (write_mode) {
 481                 printf("before audio_out_create\n");
 482                 getchar();
 483
 484                 printf("audio_out_create\n");
 485                 ret = audio_out_create_new(44100, AUDIO_CHANNEL_STEREO, AUDIO_SAMPLE_TYPE_S16_LE, &output);
 486                 if (ret != AUDIO_IO_ERROR_NONE) {
 487                         printf("audio_out_create failed. \n");
 488                         goto EXIT;
 489                 }
 490                 printf("audio_out_create success!!! [%p]\n", output);
 491
 492                 ret = audio_out_set_stream_cb(output, _audio_io_stream_write_cb, NULL);
 493                 if (ret != AUDIO_IO_ERROR_NONE) {
 494                         printf("audio_out_set_stream_cb failed. \n");
 495                         goto EXIT;
 496                 }
 497                 printf("audio_out_set_stream_cb success!!! [%p]\n", output);
 498
 499                 ret = audio_out_set_state_changed_cb(output, _audio_out_state_cb, NULL);
 500                 if (ret != AUDIO_IO_ERROR_NONE) {
 501                         printf("audio_out_set_state_changed_cb failed. \n");
 502                         goto EXIT;
 503                 }
 504                 printf("audio_out_set_state_changed_cb success!!! [%p]\n", output);
 505
 506                 ret = sound_manager_create_stream_information(SOUND_STREAM_TYPE_MEDIA, focus_callback, NULL, &g_stream_info_write_h);
 507                 if (ret) {
 508                         printf("fail to sound_manager_create_stream_information(), ret(0x%x)\n", ret);
 509                         goto EXIT;
 510                 }
 511                 ret = audio_out_set_stream_info(output, g_stream_info_write_h);
 512                 if (ret)
 513                         printf("fail to audio_out_set_stream_info(), ret(0x%x)\n", ret);
 514
 515                 ret = sound_manager_acquire_focus(g_stream_info_write_h, SOUND_STREAM_FOCUS_FOR_PLAYBACK, NULL);
 516                 if (ret) {
 517                         printf("fail to sound_manager_acquire_focus() for PLAYBACK, ret(0x%x)\n", ret);
 518                         goto EXIT;
 519                 }
 520
 521                 /* generate wave data */
 522                 for (i = 0; i < TABLE_SIZE; i++)
 523                         test_wav.sine[i] = 0.9 * (float)sin(((double)i / (double)TABLE_SIZE) * M_PI * 2.);
 524                 test_wav.left_channel = test_wav.right_channel = 0;
 525         }
 526
 527         if (read_mode) {
 528                 printf("before audio_in_prepare\n");
 529                 getchar();
 530                 printf("audio_in_prepare\n");
 531                 ret = audio_in_prepare(input);
 532                 if (ret != 0) {
 533                         printf("audio_in_prepare failed.\n");
 534                         audio_in_destroy(input);
 535                         goto EXIT;
 536                 } else {
 537                         ret = audio_in_get_buffer_size(input, &size);
 538                         if (ret != AUDIO_IO_ERROR_NONE) {
 539                                 printf("audio_in_get_buffer_size failed.\n");
 540                                 goto EXIT;
 541                         } else {
 542                                 printf("size(%d)\n", size);
 543                                 buffer = alloca(size);
 544                         }
 545                 }
 546
 547                 if (buffer == NULL) {
 548                         printf("buffer is null\n");
 549                         goto EXIT;
 550                 }
 551         }
 552
 553         if (write_mode) {
 554                 printf("before audio_out_prepare\n");
 555                 getchar();
 556                 printf("audio_out_prepare\n");
 557                 ret = audio_out_prepare(output);
 558                 if (ret != 0) {
 559                         printf("audio_out_prepare failed.\n");
 560                         audio_out_destroy(output);
 561                         goto EXIT;
 562                 }
 563         }
 564
 565         do {
 566                 printf("command(q:quit) : ");
 567                 cmd = (char)getchar();
 568                 if (cmd != '\n')
 569                         getchar();
 570                 cmd_ret = _convert_cmd_and_run(cmd, mode);
 571                 printf("  - result code : %d\n", cmd_ret);
 572         } while (cmd != 'q');
 573
 574 EXIT:
 575         if (read_mode) {
 576                 if (input) {
 577                         printf("audio_in_unprepare\n");
 578                         audio_in_unprepare(input);
 579                         printf("audio_in_destroy\n");
 580                         audio_in_destroy(input);
 581                         input = NULL;
 582                 }
 583
 584                 if (fp_w) {
 585                         fclose(fp_w);
 586                         fp_w = NULL;
 587                 }
 588
 589                 if (g_stream_info_read_h) {
 590                         ret = sound_manager_get_focus_state(g_stream_info_read_h, NULL, &recording_focus_state);
 591                         if (recording_focus_state == SOUND_STREAM_FOCUS_STATE_ACQUIRED) {
 592                                 ret = sound_manager_release_focus(g_stream_info_read_h, SOUND_STREAM_FOCUS_FOR_RECORDING, NULL);
 593                                 if (ret)
 594                                         printf("fail to sound_manager_release_focus() for recording, ret(0x%x)\n", ret);
 595                         }
 596                         ret = sound_manager_destroy_stream_information(g_stream_info_read_h);
 597                         if (ret)
 598                                 printf("fail to sound_manager_destroy_stream_information(), ret(0x%x)\n", ret);
 599                         g_stream_info_read_h = NULL;
 600                 }
 601         }
 602
 603         if (write_mode) {
 604                 if (output) {
 605                         printf("audio_out_unprepare\n");
 606                         audio_out_unprepare(output);
 607                         printf("audio_out_destroy\n");
 608                         audio_out_destroy(output);
 609                 }
 610
 611                 if (g_stream_info_write_h) {
 612                         ret = sound_manager_get_focus_state(g_stream_info_write_h, &playback_focus_state, NULL);
 613                         if (playback_focus_state == SOUND_STREAM_FOCUS_STATE_ACQUIRED) {
 614                                 ret = sound_manager_release_focus(g_stream_info_write_h, SOUND_STREAM_FOCUS_FOR_PLAYBACK, NULL);
 615                                 if (ret)
 616                                         printf("fail to sound_manager_release_focus() for playback, ret(0x%x)\n", ret);
 617                         }
 618                         ret = sound_manager_destroy_stream_information(g_stream_info_write_h);
 619                         if (ret)
 620                                 printf("fail to sound_manager_destroy_stream_information(), ret(0x%x)\n", ret);
 621                         g_stream_info_write_h = NULL;
 622                 }
 623         }
 624
 625         return 0;
 626 }
 627
 628 int main(int argc, char **argv)
 629 {
 630         if (argc == 2 && !strcmp(argv[1], "call-forwarding-loop")) {
 631                 audio_io_loopback_test();
 632         } else if (argc == 2 && !strcmp(argv[1], "call-forwarding-in")) {
 633                 audio_io_loopback_in_test();
 634         } else if (argc == 3 && !strcmp(argv[1], "async")) {
 635                 audio_io_async_test(atoi(argv[2]));
 636         } else if (argc == 4) {
 637                 printf("run with [%s][%s][%s]\n", argv[1], argv[2], argv[3]);
 638                 audio_io_test(atoi(argv[1]), atoi(argv[2]), atoi(argv[3]));
 639         } else if (argc == 6) {
 640                 play_file_sample(argv[2], atoi(argv[3]), atoi(argv[4]), atoi(argv[5]));
 641         } else {
 642                 printf("1. usage : audio_io_test call-forwarding-loop\n");
 643                 printf("2. usage : audio_io_test call-forwarding-in\n");
 644                 printf("3. usage : audio_io_test [length to read] [number of iteration] [channels]\n");
 645                 printf("4. usage : audio_io_test async [write(1) | read(2)]\n");
 646                 printf("5. Uasge : audio_io_test play [filename] [sample rate] [channels] [type(0:U8)]\n");
 647         }
 648         return 0;
 649 }