AudioRecorder_to_android.cpp revision 6805ee0037e981af43e990d309280950d13addad
1/* 2 * Copyright (C) 2010 The Android Open Source Project 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 18#include "sles_allinclusive.h" 19#include "android_prompts.h" 20 21#include <utils/String16.h> 22 23#include <system/audio.h> 24 25#define KEY_RECORDING_SOURCE_PARAMSIZE sizeof(SLuint32) 26#define KEY_RECORDING_PRESET_PARAMSIZE sizeof(SLuint32) 27 28//----------------------------------------------------------------------------- 29// Internal utility functions 30//---------------------------- 31 32SLresult audioRecorder_setPreset(CAudioRecorder* ar, SLuint32 recordPreset) { 33 SLresult result = SL_RESULT_SUCCESS; 34 35 audio_source_t newRecordSource = AUDIO_SOURCE_DEFAULT; 36 switch (recordPreset) { 37 case SL_ANDROID_RECORDING_PRESET_GENERIC: 38 newRecordSource = AUDIO_SOURCE_DEFAULT; 39 break; 40 case SL_ANDROID_RECORDING_PRESET_CAMCORDER: 41 newRecordSource = AUDIO_SOURCE_CAMCORDER; 42 break; 43 case SL_ANDROID_RECORDING_PRESET_VOICE_RECOGNITION: 44 newRecordSource = AUDIO_SOURCE_VOICE_RECOGNITION; 45 break; 46 case SL_ANDROID_RECORDING_PRESET_VOICE_COMMUNICATION: 47 newRecordSource = AUDIO_SOURCE_VOICE_COMMUNICATION; 48 break; 49 case SL_ANDROID_RECORDING_PRESET_NONE: 50 // it is an error to set preset "none" 51 default: 52 SL_LOGE(ERROR_RECORDERPRESET_SET_UNKNOWN_PRESET); 53 result = SL_RESULT_PARAMETER_INVALID; 54 } 55 56 // recording preset needs to be set before the object is realized 57 // (ap->mAudioRecord is supposed to be 0 until then) 58 if (SL_OBJECT_STATE_UNREALIZED != ar->mObject.mState) { 59 SL_LOGE(ERROR_RECORDERPRESET_REALIZED); 60 result = SL_RESULT_PRECONDITIONS_VIOLATED; 61 } else { 62 ar->mRecordSource = newRecordSource; 63 } 64 65 return result; 66} 67 68 69SLresult audioRecorder_getPreset(CAudioRecorder* ar, SLuint32* pPreset) { 70 SLresult result = SL_RESULT_SUCCESS; 71 72 switch (ar->mRecordSource) { 73 case AUDIO_SOURCE_DEFAULT: 74 case AUDIO_SOURCE_MIC: 75 *pPreset = SL_ANDROID_RECORDING_PRESET_GENERIC; 76 break; 77 case AUDIO_SOURCE_VOICE_UPLINK: 78 case AUDIO_SOURCE_VOICE_DOWNLINK: 79 case AUDIO_SOURCE_VOICE_CALL: 80 *pPreset = SL_ANDROID_RECORDING_PRESET_NONE; 81 break; 82 case AUDIO_SOURCE_VOICE_RECOGNITION: 83 *pPreset = SL_ANDROID_RECORDING_PRESET_VOICE_RECOGNITION; 84 break; 85 case AUDIO_SOURCE_CAMCORDER: 86 *pPreset = SL_ANDROID_RECORDING_PRESET_CAMCORDER; 87 break; 88 case AUDIO_SOURCE_VOICE_COMMUNICATION: 89 *pPreset = SL_ANDROID_RECORDING_PRESET_VOICE_COMMUNICATION; 90 break; 91 default: 92 *pPreset = SL_ANDROID_RECORDING_PRESET_NONE; 93 result = SL_RESULT_INTERNAL_ERROR; 94 break; 95 } 96 97 return result; 98} 99 100 101void audioRecorder_handleNewPos_lockRecord(CAudioRecorder* ar) { 102 //SL_LOGV("received event EVENT_NEW_POS from AudioRecord"); 103 slRecordCallback callback = NULL; 104 void* callbackPContext = NULL; 105 106 interface_lock_shared(&ar->mRecord); 107 callback = ar->mRecord.mCallback; 108 callbackPContext = ar->mRecord.mContext; 109 interface_unlock_shared(&ar->mRecord); 110 111 if (NULL != callback) { 112 // getting this event implies SL_RECORDEVENT_HEADATNEWPOS was set in the event mask 113 (*callback)(&ar->mRecord.mItf, callbackPContext, SL_RECORDEVENT_HEADATNEWPOS); 114 } 115} 116 117 118void audioRecorder_handleMarker_lockRecord(CAudioRecorder* ar) { 119 //SL_LOGV("received event EVENT_MARKER from AudioRecord"); 120 slRecordCallback callback = NULL; 121 void* callbackPContext = NULL; 122 123 interface_lock_shared(&ar->mRecord); 124 callback = ar->mRecord.mCallback; 125 callbackPContext = ar->mRecord.mContext; 126 interface_unlock_shared(&ar->mRecord); 127 128 if (NULL != callback) { 129 // getting this event implies SL_RECORDEVENT_HEADATMARKER was set in the event mask 130 (*callback)(&ar->mRecord.mItf, callbackPContext, SL_RECORDEVENT_HEADATMARKER); 131 } 132} 133 134 135void audioRecorder_handleOverrun_lockRecord(CAudioRecorder* ar) { 136 //SL_LOGV("received event EVENT_OVERRUN from AudioRecord"); 137 slRecordCallback callback = NULL; 138 void* callbackPContext = NULL; 139 140 interface_lock_shared(&ar->mRecord); 141 if (ar->mRecord.mCallbackEventsMask & SL_RECORDEVENT_HEADSTALLED) { 142 callback = ar->mRecord.mCallback; 143 callbackPContext = ar->mRecord.mContext; 144 } 145 interface_unlock_shared(&ar->mRecord); 146 147 if (NULL != callback) { 148 (*callback)(&ar->mRecord.mItf, callbackPContext, SL_RECORDEVENT_HEADSTALLED); 149 } 150} 151 152//----------------------------------------------------------------------------- 153SLresult android_audioRecorder_checkSourceSink(CAudioRecorder* ar) { 154 155 const SLDataSource *pAudioSrc = &ar->mDataSource.u.mSource; 156 const SLDataSink *pAudioSnk = &ar->mDataSink.u.mSink; 157 158 const SLuint32 sinkLocatorType = *(SLuint32 *)pAudioSnk->pLocator; 159 const SLuint32 sinkFormatType = *(SLuint32 *)pAudioSnk->pFormat; 160 161 const SLuint32 *df_representation = NULL; // pointer to representation field, if it exists 162 163 // sink must be an Android simple buffer queue with PCM data format 164 switch (sinkLocatorType) { 165 case SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE: { 166 switch (sinkFormatType) { 167 case SL_ANDROID_DATAFORMAT_PCM_EX: { 168 const SLAndroidDataFormat_PCM_EX *df_pcm = 169 (SLAndroidDataFormat_PCM_EX *) pAudioSnk->pFormat; 170 // checkDataFormat() already checked representation 171 df_representation = &df_pcm->representation; 172 } // SL_ANDROID_DATAFORMAT_PCM_EX - fall through to next test. 173 case SL_DATAFORMAT_PCM: { 174 const SLDataFormat_PCM *df_pcm = (const SLDataFormat_PCM *) pAudioSnk->pFormat; 175 // FIXME validate channel mask and number of channels 176 177 // checkDataFormat already checked sample rate 178 179 ar->mNumChannels = df_pcm->numChannels; 180 181 if (df_pcm->endianness != ar->mObject.mEngine->mEngine.mNativeEndianness) { 182 SL_LOGE("Cannot create audio recorder: unsupported byte order %u", df_pcm->endianness); 183 return SL_RESULT_CONTENT_UNSUPPORTED; 184 } 185 186 ar->mSampleRateMilliHz = df_pcm->samplesPerSec; // Note: bad field name in SL ES 187 SL_LOGV("AudioRecorder requested sample rate = %u mHz, %u channel(s)", 188 ar->mSampleRateMilliHz, ar->mNumChannels); 189 // FIXME validates bitsPerSample 190 } break; 191 default: 192 SL_LOGE(ERROR_RECORDER_SINK_FORMAT_MUST_BE_PCM); 193 return SL_RESULT_PARAMETER_INVALID; 194 } // switch (sourceFormatType) 195 } break; // case SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE 196 default: 197 SL_LOGE(ERROR_RECORDER_SINK_MUST_BE_ANDROIDSIMPLEBUFFERQUEUE); 198 return SL_RESULT_PARAMETER_INVALID; 199 } // switch (sourceLocatorType) 200 201 // Source check: 202 // only input device sources are supported 203 // check it's an IO device 204 if (SL_DATALOCATOR_IODEVICE != *(SLuint32 *)pAudioSrc->pLocator) { 205 SL_LOGE(ERROR_RECORDER_SOURCE_MUST_BE_IODEVICE); 206 return SL_RESULT_PARAMETER_INVALID; 207 } else { 208 209 // check it's an input device 210 SLDataLocator_IODevice *dl_iod = (SLDataLocator_IODevice *) pAudioSrc->pLocator; 211 if (SL_IODEVICE_AUDIOINPUT != dl_iod->deviceType) { 212 SL_LOGE(ERROR_RECORDER_IODEVICE_MUST_BE_AUDIOINPUT); 213 return SL_RESULT_PARAMETER_INVALID; 214 } 215 216 // check it's the default input device, others aren't supported here 217 if (SL_DEFAULTDEVICEID_AUDIOINPUT != dl_iod->deviceID) { 218 SL_LOGE(ERROR_RECORDER_INPUT_ID_MUST_BE_DEFAULT); 219 return SL_RESULT_PARAMETER_INVALID; 220 } 221 } 222 223 return SL_RESULT_SUCCESS; 224} 225//----------------------------------------------------------------------------- 226static void audioRecorder_callback(int event, void* user, void *info) { 227 //SL_LOGV("audioRecorder_callback(%d, %p, %p) entering", event, user, info); 228 229 CAudioRecorder *ar = (CAudioRecorder *)user; 230 231 if (!android::CallbackProtector::enterCbIfOk(ar->mCallbackProtector)) { 232 // it is not safe to enter the callback (the track is about to go away) 233 return; 234 } 235 236 void * callbackPContext = NULL; 237 238 switch (event) { 239 case android::AudioRecord::EVENT_MORE_DATA: { 240 slBufferQueueCallback callback = NULL; 241 android::AudioRecord::Buffer* pBuff = (android::AudioRecord::Buffer*)info; 242 243 // push data to the buffer queue 244 interface_lock_exclusive(&ar->mBufferQueue); 245 246 if (ar->mBufferQueue.mState.count != 0) { 247 assert(ar->mBufferQueue.mFront != ar->mBufferQueue.mRear); 248 249 BufferHeader *oldFront = ar->mBufferQueue.mFront; 250 BufferHeader *newFront = &oldFront[1]; 251 252 size_t availSink = oldFront->mSize - ar->mBufferQueue.mSizeConsumed; 253 size_t availSource = pBuff->size; 254 size_t bytesToCopy = availSink < availSource ? availSink : availSource; 255 void *pDest = (char *)oldFront->mBuffer + ar->mBufferQueue.mSizeConsumed; 256 memcpy(pDest, pBuff->raw, bytesToCopy); 257 258 if (bytesToCopy < availSink) { 259 // can't consume the whole or rest of the buffer in one shot 260 ar->mBufferQueue.mSizeConsumed += availSource; 261 // pBuff->size is already equal to bytesToCopy in this case 262 } else { 263 // finish pushing the buffer or push the buffer in one shot 264 pBuff->size = bytesToCopy; 265 ar->mBufferQueue.mSizeConsumed = 0; 266 if (newFront == &ar->mBufferQueue.mArray[ar->mBufferQueue.mNumBuffers + 1]) { 267 newFront = ar->mBufferQueue.mArray; 268 } 269 ar->mBufferQueue.mFront = newFront; 270 271 ar->mBufferQueue.mState.count--; 272 ar->mBufferQueue.mState.playIndex++; 273 274 // data has been copied to the buffer, and the buffer queue state has been updated 275 // we will notify the client if applicable 276 callback = ar->mBufferQueue.mCallback; 277 // save callback data 278 callbackPContext = ar->mBufferQueue.mContext; 279 } 280 } else { // empty queue 281 // no destination to push the data 282 pBuff->size = 0; 283 } 284 285 interface_unlock_exclusive(&ar->mBufferQueue); 286 287 // notify client 288 if (NULL != callback) { 289 (*callback)(&ar->mBufferQueue.mItf, callbackPContext); 290 } 291 } 292 break; 293 294 case android::AudioRecord::EVENT_OVERRUN: 295 audioRecorder_handleOverrun_lockRecord(ar); 296 break; 297 298 case android::AudioRecord::EVENT_MARKER: 299 audioRecorder_handleMarker_lockRecord(ar); 300 break; 301 302 case android::AudioRecord::EVENT_NEW_POS: 303 audioRecorder_handleNewPos_lockRecord(ar); 304 break; 305 306 case android::AudioRecord::EVENT_NEW_IAUDIORECORD: 307 // ignore for now 308 break; 309 310 default: 311 SL_LOGE("Encountered unknown AudioRecord event %d for CAudioRecord %p", event, ar); 312 break; 313 } 314 315 ar->mCallbackProtector->exitCb(); 316} 317 318 319//----------------------------------------------------------------------------- 320SLresult android_audioRecorder_create(CAudioRecorder* ar) { 321 SL_LOGV("android_audioRecorder_create(%p) entering", ar); 322 323 const SLDataSource *pAudioSrc = &ar->mDataSource.u.mSource; 324 const SLDataSink *pAudioSnk = &ar->mDataSink.u.mSink; 325 SLresult result = SL_RESULT_SUCCESS; 326 327 const SLuint32 sourceLocatorType = *(SLuint32 *)pAudioSrc->pLocator; 328 const SLuint32 sinkLocatorType = *(SLuint32 *)pAudioSnk->pLocator; 329 330 // the following platform-independent fields have been initialized in CreateAudioRecorder() 331 // ar->mNumChannels 332 // ar->mSampleRateMilliHz 333 334 if ((SL_DATALOCATOR_IODEVICE == sourceLocatorType) && 335 (SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE == sinkLocatorType)) { 336 // microphone to simple buffer queue 337 ar->mAndroidObjType = AUDIORECORDER_FROM_MIC_TO_PCM_BUFFERQUEUE; 338 ar->mAudioRecord.clear(); 339 ar->mCallbackProtector = new android::CallbackProtector(); 340 ar->mRecordSource = AUDIO_SOURCE_DEFAULT; 341 } else { 342 result = SL_RESULT_CONTENT_UNSUPPORTED; 343 } 344 345 return result; 346} 347 348 349//----------------------------------------------------------------------------- 350SLresult android_audioRecorder_setConfig(CAudioRecorder* ar, const SLchar *configKey, 351 const void *pConfigValue, SLuint32 valueSize) { 352 353 SLresult result; 354 355 assert(NULL != ar && NULL != configKey && NULL != pConfigValue); 356 if (strcmp((const char*)configKey, (const char*)SL_ANDROID_KEY_RECORDING_PRESET) == 0) { 357 358 // recording preset 359 if (KEY_RECORDING_PRESET_PARAMSIZE > valueSize) { 360 SL_LOGE(ERROR_CONFIG_VALUESIZE_TOO_LOW); 361 result = SL_RESULT_BUFFER_INSUFFICIENT; 362 } else { 363 result = audioRecorder_setPreset(ar, *(SLuint32*)pConfigValue); 364 } 365 366 } else { 367 SL_LOGE(ERROR_CONFIG_UNKNOWN_KEY); 368 result = SL_RESULT_PARAMETER_INVALID; 369 } 370 371 return result; 372} 373 374 375//----------------------------------------------------------------------------- 376SLresult android_audioRecorder_getConfig(CAudioRecorder* ar, const SLchar *configKey, 377 SLuint32* pValueSize, void *pConfigValue) { 378 379 SLresult result; 380 381 assert(NULL != ar && NULL != configKey && NULL != pValueSize); 382 if (strcmp((const char*)configKey, (const char*)SL_ANDROID_KEY_RECORDING_PRESET) == 0) { 383 384 // recording preset 385 if (NULL == pConfigValue) { 386 result = SL_RESULT_SUCCESS; 387 } else if (KEY_RECORDING_PRESET_PARAMSIZE > *pValueSize) { 388 SL_LOGE(ERROR_CONFIG_VALUESIZE_TOO_LOW); 389 result = SL_RESULT_BUFFER_INSUFFICIENT; 390 } else { 391 result = audioRecorder_getPreset(ar, (SLuint32*)pConfigValue); 392 } 393 *pValueSize = KEY_RECORDING_PRESET_PARAMSIZE; 394 395 } else { 396 SL_LOGE(ERROR_CONFIG_UNKNOWN_KEY); 397 result = SL_RESULT_PARAMETER_INVALID; 398 } 399 400 return result; 401} 402 403 404//----------------------------------------------------------------------------- 405SLresult android_audioRecorder_realize(CAudioRecorder* ar, SLboolean async) { 406 SL_LOGV("android_audioRecorder_realize(%p) entering", ar); 407 408 SLresult result = SL_RESULT_SUCCESS; 409 410 // already checked in created and checkSourceSink 411 assert(ar->mDataSink.mLocator.mLocatorType == SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE); 412 413 const SLDataLocator_BufferQueue *dl_bq = &ar->mDataSink.mLocator.mBufferQueue; 414 const SLDataFormat_PCM *df_pcm = &ar->mDataSink.mFormat.mPCM; 415 416 // the following platform-independent fields have been initialized in CreateAudioRecorder() 417 // ar->mNumChannels 418 // ar->mSampleRateMilliHz 419 420 uint32_t sampleRate = sles_to_android_sampleRate(df_pcm->samplesPerSec); 421 422 // currently nothing analogous to canUseFastTrack() for recording 423 audio_input_flags_t policy = AUDIO_INPUT_FLAG_FAST; 424 425 // initialize platform-specific CAudioRecorder fields 426 ar->mAudioRecord = new android::AudioRecord( 427 ar->mRecordSource, // source 428 sampleRate, // sample rate in Hertz 429 sles_to_android_sampleFormat(df_pcm), // format 430 // FIXME ignores df_pcm->channelMask, 431 // and assumes positional mask for mono or stereo, 432 // or indexed mask for > 2 channels 433 audio_channel_in_mask_from_count(df_pcm->numChannels), 434 android::String16(), // app ops 435 0, // frameCount 436 audioRecorder_callback,// callback_t 437 (void*)ar, // user, callback data, here the AudioRecorder 438 0, // notificationFrames 439 0, // session ID 440 android::AudioRecord::TRANSFER_CALLBACK, 441 // transfer type 442 policy); // audio_input_flags_t 443 444 android::status_t status = ar->mAudioRecord->initCheck(); 445 if (android::NO_ERROR != status) { 446 SL_LOGE("android_audioRecorder_realize(%p) error creating AudioRecord object; status %d", 447 ar, status); 448 // FIXME should return a more specific result depending on status 449 result = SL_RESULT_CONTENT_UNSUPPORTED; 450 ar->mAudioRecord.clear(); 451 } 452 453 return result; 454} 455 456 457//----------------------------------------------------------------------------- 458/** 459 * Called with a lock on AudioRecorder, and blocks until safe to destroy 460 */ 461void android_audioRecorder_preDestroy(CAudioRecorder* ar) { 462 object_unlock_exclusive(&ar->mObject); 463 if (ar->mCallbackProtector != 0) { 464 ar->mCallbackProtector->requestCbExitAndWait(); 465 } 466 object_lock_exclusive(&ar->mObject); 467} 468 469 470//----------------------------------------------------------------------------- 471void android_audioRecorder_destroy(CAudioRecorder* ar) { 472 SL_LOGV("android_audioRecorder_destroy(%p) entering", ar); 473 474 if (ar->mAudioRecord != 0) { 475 ar->mAudioRecord->stop(); 476 ar->mAudioRecord.clear(); 477 } 478 // explicit destructor 479 ar->mAudioRecord.~sp(); 480 ar->mCallbackProtector.~sp(); 481} 482 483 484//----------------------------------------------------------------------------- 485void android_audioRecorder_setRecordState(CAudioRecorder* ar, SLuint32 state) { 486 SL_LOGV("android_audioRecorder_setRecordState(%p, %u) entering", ar, state); 487 488 if (ar->mAudioRecord == 0) { 489 return; 490 } 491 492 switch (state) { 493 case SL_RECORDSTATE_STOPPED: 494 ar->mAudioRecord->stop(); 495 break; 496 case SL_RECORDSTATE_PAUSED: 497 // Note that pausing is treated like stop as this implementation only records to a buffer 498 // queue, so there is no notion of destination being "opened" or "closed" (See description 499 // of SL_RECORDSTATE in specification) 500 ar->mAudioRecord->stop(); 501 break; 502 case SL_RECORDSTATE_RECORDING: 503 ar->mAudioRecord->start(); 504 break; 505 default: 506 break; 507 } 508 509} 510 511 512//----------------------------------------------------------------------------- 513void android_audioRecorder_useRecordEventMask(CAudioRecorder *ar) { 514 IRecord *pRecordItf = &ar->mRecord; 515 SLuint32 eventFlags = pRecordItf->mCallbackEventsMask; 516 517 if (ar->mAudioRecord == 0) { 518 return; 519 } 520 521 if ((eventFlags & SL_RECORDEVENT_HEADATMARKER) && (pRecordItf->mMarkerPosition != 0)) { 522 ar->mAudioRecord->setMarkerPosition((uint32_t)((((int64_t)pRecordItf->mMarkerPosition 523 * sles_to_android_sampleRate(ar->mSampleRateMilliHz)))/1000)); 524 } else { 525 // clear marker 526 ar->mAudioRecord->setMarkerPosition(0); 527 } 528 529 if (eventFlags & SL_RECORDEVENT_HEADATNEWPOS) { 530 SL_LOGV("pos update period %d", pRecordItf->mPositionUpdatePeriod); 531 ar->mAudioRecord->setPositionUpdatePeriod( 532 (uint32_t)((((int64_t)pRecordItf->mPositionUpdatePeriod 533 * sles_to_android_sampleRate(ar->mSampleRateMilliHz)))/1000)); 534 } else { 535 // clear periodic update 536 ar->mAudioRecord->setPositionUpdatePeriod(0); 537 } 538 539 if (eventFlags & SL_RECORDEVENT_HEADATLIMIT) { 540 // FIXME support SL_RECORDEVENT_HEADATLIMIT 541 SL_LOGD("[ FIXME: IRecord_SetCallbackEventsMask(SL_RECORDEVENT_HEADATLIMIT) on an " 542 "SL_OBJECTID_AUDIORECORDER to be implemented ]"); 543 } 544 545 if (eventFlags & SL_RECORDEVENT_HEADMOVING) { 546 // FIXME support SL_RECORDEVENT_HEADMOVING 547 SL_LOGD("[ FIXME: IRecord_SetCallbackEventsMask(SL_RECORDEVENT_HEADMOVING) on an " 548 "SL_OBJECTID_AUDIORECORDER to be implemented ]"); 549 } 550 551 if (eventFlags & SL_RECORDEVENT_BUFFER_FULL) { 552 // nothing to do for SL_RECORDEVENT_BUFFER_FULL since this will not be encountered on 553 // recording to buffer queues 554 } 555 556 if (eventFlags & SL_RECORDEVENT_HEADSTALLED) { 557 // nothing to do for SL_RECORDEVENT_HEADSTALLED, callback event will be checked against mask 558 // when AudioRecord::EVENT_OVERRUN is encountered 559 560 } 561 562} 563 564 565//----------------------------------------------------------------------------- 566void android_audioRecorder_getPosition(CAudioRecorder *ar, SLmillisecond *pPosMsec) { 567 if ((NULL == ar) || (ar->mAudioRecord == 0)) { 568 *pPosMsec = 0; 569 } else { 570 uint32_t positionInFrames; 571 ar->mAudioRecord->getPosition(&positionInFrames); 572 if (ar->mSampleRateMilliHz == UNKNOWN_SAMPLERATE) { 573 *pPosMsec = 0; 574 } else { 575 *pPosMsec = ((int64_t)positionInFrames * 1000) / 576 sles_to_android_sampleRate(ar->mSampleRateMilliHz); 577 } 578 } 579} 580