AudioSystem.cpp revision 0b07b8085d7b837b4dd5f09e0c8c39408f6bdbf7
1/* 2 * Copyright (C) 2006-2007 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#define LOG_TAG "AudioSystem" 18//#define LOG_NDEBUG 0 19 20#include <utils/Log.h> 21#include <binder/IServiceManager.h> 22#include <media/AudioSystem.h> 23#include <media/IAudioPolicyService.h> 24#include <math.h> 25 26#include <system/audio.h> 27 28// ---------------------------------------------------------------------------- 29 30namespace android { 31 32// client singleton for AudioFlinger binder interface 33Mutex AudioSystem::gLock; 34sp<IAudioFlinger> AudioSystem::gAudioFlinger; 35sp<AudioSystem::AudioFlingerClient> AudioSystem::gAudioFlingerClient; 36audio_error_callback AudioSystem::gAudioErrorCallback = NULL; 37// Cached values 38DefaultKeyedVector<int, audio_io_handle_t> AudioSystem::gStreamOutputMap(0); 39DefaultKeyedVector<audio_io_handle_t, AudioSystem::OutputDescriptor *> AudioSystem::gOutputs(0); 40 41// Cached values for recording queries, all protected by gLock 42uint32_t AudioSystem::gPrevInSamplingRate = 16000; 43int AudioSystem::gPrevInFormat = AUDIO_FORMAT_PCM_16_BIT; 44int AudioSystem::gPrevInChannelCount = 1; 45size_t AudioSystem::gInBuffSize = 0; 46 47 48// establish binder interface to AudioFlinger service 49const sp<IAudioFlinger>& AudioSystem::get_audio_flinger() 50{ 51 Mutex::Autolock _l(gLock); 52 if (gAudioFlinger.get() == 0) { 53 sp<IServiceManager> sm = defaultServiceManager(); 54 sp<IBinder> binder; 55 do { 56 binder = sm->getService(String16("media.audio_flinger")); 57 if (binder != 0) 58 break; 59 ALOGW("AudioFlinger not published, waiting..."); 60 usleep(500000); // 0.5 s 61 } while(true); 62 if (gAudioFlingerClient == NULL) { 63 gAudioFlingerClient = new AudioFlingerClient(); 64 } else { 65 if (gAudioErrorCallback) { 66 gAudioErrorCallback(NO_ERROR); 67 } 68 } 69 binder->linkToDeath(gAudioFlingerClient); 70 gAudioFlinger = interface_cast<IAudioFlinger>(binder); 71 gAudioFlinger->registerClient(gAudioFlingerClient); 72 } 73 ALOGE_IF(gAudioFlinger==0, "no AudioFlinger!?"); 74 75 return gAudioFlinger; 76} 77 78status_t AudioSystem::muteMicrophone(bool state) { 79 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 80 if (af == 0) return PERMISSION_DENIED; 81 return af->setMicMute(state); 82} 83 84status_t AudioSystem::isMicrophoneMuted(bool* state) { 85 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 86 if (af == 0) return PERMISSION_DENIED; 87 *state = af->getMicMute(); 88 return NO_ERROR; 89} 90 91status_t AudioSystem::setMasterVolume(float value) 92{ 93 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 94 if (af == 0) return PERMISSION_DENIED; 95 af->setMasterVolume(value); 96 return NO_ERROR; 97} 98 99status_t AudioSystem::setMasterMute(bool mute) 100{ 101 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 102 if (af == 0) return PERMISSION_DENIED; 103 af->setMasterMute(mute); 104 return NO_ERROR; 105} 106 107status_t AudioSystem::getMasterVolume(float* volume) 108{ 109 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 110 if (af == 0) return PERMISSION_DENIED; 111 *volume = af->masterVolume(); 112 return NO_ERROR; 113} 114 115status_t AudioSystem::getMasterMute(bool* mute) 116{ 117 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 118 if (af == 0) return PERMISSION_DENIED; 119 *mute = af->masterMute(); 120 return NO_ERROR; 121} 122 123status_t AudioSystem::setStreamVolume(audio_stream_type_t stream, float value, int output) 124{ 125 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 126 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 127 if (af == 0) return PERMISSION_DENIED; 128 af->setStreamVolume(stream, value, output); 129 return NO_ERROR; 130} 131 132status_t AudioSystem::setStreamMute(audio_stream_type_t stream, bool mute) 133{ 134 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 135 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 136 if (af == 0) return PERMISSION_DENIED; 137 af->setStreamMute(stream, mute); 138 return NO_ERROR; 139} 140 141status_t AudioSystem::getStreamVolume(audio_stream_type_t stream, float* volume, int output) 142{ 143 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 144 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 145 if (af == 0) return PERMISSION_DENIED; 146 *volume = af->streamVolume(stream, output); 147 return NO_ERROR; 148} 149 150status_t AudioSystem::getStreamMute(audio_stream_type_t stream, bool* mute) 151{ 152 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 153 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 154 if (af == 0) return PERMISSION_DENIED; 155 *mute = af->streamMute(stream); 156 return NO_ERROR; 157} 158 159status_t AudioSystem::setMode(audio_mode_t mode) 160{ 161 if (uint32_t(mode) >= AUDIO_MODE_CNT) return BAD_VALUE; 162 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 163 if (af == 0) return PERMISSION_DENIED; 164 return af->setMode(mode); 165} 166 167status_t AudioSystem::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs) { 168 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 169 if (af == 0) return PERMISSION_DENIED; 170 return af->setParameters(ioHandle, keyValuePairs); 171} 172 173String8 AudioSystem::getParameters(audio_io_handle_t ioHandle, const String8& keys) { 174 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 175 String8 result = String8(""); 176 if (af == 0) return result; 177 178 result = af->getParameters(ioHandle, keys); 179 return result; 180} 181 182// convert volume steps to natural log scale 183 184// change this value to change volume scaling 185static const float dBPerStep = 0.5f; 186// shouldn't need to touch these 187static const float dBConvert = -dBPerStep * 2.302585093f / 20.0f; 188static const float dBConvertInverse = 1.0f / dBConvert; 189 190float AudioSystem::linearToLog(int volume) 191{ 192 // float v = volume ? exp(float(100 - volume) * dBConvert) : 0; 193 // ALOGD("linearToLog(%d)=%f", volume, v); 194 // return v; 195 return volume ? exp(float(100 - volume) * dBConvert) : 0; 196} 197 198int AudioSystem::logToLinear(float volume) 199{ 200 // int v = volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 201 // ALOGD("logTolinear(%d)=%f", v, volume); 202 // return v; 203 return volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 204} 205 206status_t AudioSystem::getOutputSamplingRate(int* samplingRate, audio_stream_type_t streamType) 207{ 208 OutputDescriptor *outputDesc; 209 audio_io_handle_t output; 210 211 if (streamType == AUDIO_STREAM_DEFAULT) { 212 streamType = AUDIO_STREAM_MUSIC; 213 } 214 215 output = getOutput(streamType); 216 if (output == 0) { 217 return PERMISSION_DENIED; 218 } 219 220 gLock.lock(); 221 outputDesc = AudioSystem::gOutputs.valueFor(output); 222 if (outputDesc == 0) { 223 ALOGV("getOutputSamplingRate() no output descriptor for output %d in gOutputs", output); 224 gLock.unlock(); 225 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 226 if (af == 0) return PERMISSION_DENIED; 227 *samplingRate = af->sampleRate(output); 228 } else { 229 ALOGV("getOutputSamplingRate() reading from output desc"); 230 *samplingRate = outputDesc->samplingRate; 231 gLock.unlock(); 232 } 233 234 ALOGV("getOutputSamplingRate() streamType %d, output %d, sampling rate %d", streamType, output, *samplingRate); 235 236 return NO_ERROR; 237} 238 239status_t AudioSystem::getOutputFrameCount(int* frameCount, audio_stream_type_t streamType) 240{ 241 OutputDescriptor *outputDesc; 242 audio_io_handle_t output; 243 244 if (streamType == AUDIO_STREAM_DEFAULT) { 245 streamType = AUDIO_STREAM_MUSIC; 246 } 247 248 output = getOutput(streamType); 249 if (output == 0) { 250 return PERMISSION_DENIED; 251 } 252 253 gLock.lock(); 254 outputDesc = AudioSystem::gOutputs.valueFor(output); 255 if (outputDesc == 0) { 256 gLock.unlock(); 257 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 258 if (af == 0) return PERMISSION_DENIED; 259 *frameCount = af->frameCount(output); 260 } else { 261 *frameCount = outputDesc->frameCount; 262 gLock.unlock(); 263 } 264 265 ALOGV("getOutputFrameCount() streamType %d, output %d, frameCount %d", streamType, output, *frameCount); 266 267 return NO_ERROR; 268} 269 270status_t AudioSystem::getOutputLatency(uint32_t* latency, audio_stream_type_t streamType) 271{ 272 OutputDescriptor *outputDesc; 273 audio_io_handle_t output; 274 275 if (streamType == AUDIO_STREAM_DEFAULT) { 276 streamType = AUDIO_STREAM_MUSIC; 277 } 278 279 output = getOutput(streamType); 280 if (output == 0) { 281 return PERMISSION_DENIED; 282 } 283 284 gLock.lock(); 285 outputDesc = AudioSystem::gOutputs.valueFor(output); 286 if (outputDesc == 0) { 287 gLock.unlock(); 288 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 289 if (af == 0) return PERMISSION_DENIED; 290 *latency = af->latency(output); 291 } else { 292 *latency = outputDesc->latency; 293 gLock.unlock(); 294 } 295 296 ALOGV("getOutputLatency() streamType %d, output %d, latency %d", streamType, output, *latency); 297 298 return NO_ERROR; 299} 300 301status_t AudioSystem::getInputBufferSize(uint32_t sampleRate, int format, int channelCount, 302 size_t* buffSize) 303{ 304 gLock.lock(); 305 // Do we have a stale gInBufferSize or are we requesting the input buffer size for new values 306 size_t inBuffSize = gInBuffSize; 307 if ((inBuffSize == 0) || (sampleRate != gPrevInSamplingRate) || (format != gPrevInFormat) 308 || (channelCount != gPrevInChannelCount)) { 309 gLock.unlock(); 310 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 311 if (af == 0) { 312 return PERMISSION_DENIED; 313 } 314 inBuffSize = af->getInputBufferSize(sampleRate, format, channelCount); 315 gLock.lock(); 316 // save the request params 317 gPrevInSamplingRate = sampleRate; 318 gPrevInFormat = format; 319 gPrevInChannelCount = channelCount; 320 321 gInBuffSize = inBuffSize; 322 } 323 gLock.unlock(); 324 *buffSize = inBuffSize; 325 326 return NO_ERROR; 327} 328 329status_t AudioSystem::setVoiceVolume(float value) 330{ 331 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 332 if (af == 0) return PERMISSION_DENIED; 333 return af->setVoiceVolume(value); 334} 335 336status_t AudioSystem::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, audio_stream_type_t stream) 337{ 338 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 339 if (af == 0) return PERMISSION_DENIED; 340 341 if (stream == AUDIO_STREAM_DEFAULT) { 342 stream = AUDIO_STREAM_MUSIC; 343 } 344 345 return af->getRenderPosition(halFrames, dspFrames, getOutput(stream)); 346} 347 348unsigned int AudioSystem::getInputFramesLost(audio_io_handle_t ioHandle) { 349 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 350 unsigned int result = 0; 351 if (af == 0) return result; 352 if (ioHandle == 0) return result; 353 354 result = af->getInputFramesLost(ioHandle); 355 return result; 356} 357 358int AudioSystem::newAudioSessionId() { 359 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 360 if (af == 0) return 0; 361 return af->newAudioSessionId(); 362} 363 364void AudioSystem::acquireAudioSessionId(int audioSession) { 365 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 366 if (af != 0) { 367 af->acquireAudioSessionId(audioSession); 368 } 369} 370 371void AudioSystem::releaseAudioSessionId(int audioSession) { 372 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 373 if (af != 0) { 374 af->releaseAudioSessionId(audioSession); 375 } 376} 377 378// --------------------------------------------------------------------------- 379 380void AudioSystem::AudioFlingerClient::binderDied(const wp<IBinder>& who) { 381 Mutex::Autolock _l(AudioSystem::gLock); 382 383 AudioSystem::gAudioFlinger.clear(); 384 // clear output handles and stream to output map caches 385 AudioSystem::gStreamOutputMap.clear(); 386 AudioSystem::gOutputs.clear(); 387 388 if (gAudioErrorCallback) { 389 gAudioErrorCallback(DEAD_OBJECT); 390 } 391 ALOGW("AudioFlinger server died!"); 392} 393 394void AudioSystem::AudioFlingerClient::ioConfigChanged(int event, int ioHandle, void *param2) { 395 ALOGV("ioConfigChanged() event %d", event); 396 OutputDescriptor *desc; 397 uint32_t stream; 398 399 if (ioHandle == 0) return; 400 401 Mutex::Autolock _l(AudioSystem::gLock); 402 403 switch (event) { 404 case STREAM_CONFIG_CHANGED: 405 if (param2 == 0) break; 406 stream = *(uint32_t *)param2; 407 ALOGV("ioConfigChanged() STREAM_CONFIG_CHANGED stream %d, output %d", stream, ioHandle); 408 if (gStreamOutputMap.indexOfKey(stream) >= 0) { 409 gStreamOutputMap.replaceValueFor(stream, ioHandle); 410 } 411 break; 412 case OUTPUT_OPENED: { 413 if (gOutputs.indexOfKey(ioHandle) >= 0) { 414 ALOGV("ioConfigChanged() opening already existing output! %d", ioHandle); 415 break; 416 } 417 if (param2 == 0) break; 418 desc = (OutputDescriptor *)param2; 419 420 OutputDescriptor *outputDesc = new OutputDescriptor(*desc); 421 gOutputs.add(ioHandle, outputDesc); 422 ALOGV("ioConfigChanged() new output samplingRate %d, format %d channels %d frameCount %d latency %d", 423 outputDesc->samplingRate, outputDesc->format, outputDesc->channels, outputDesc->frameCount, outputDesc->latency); 424 } break; 425 case OUTPUT_CLOSED: { 426 if (gOutputs.indexOfKey(ioHandle) < 0) { 427 ALOGW("ioConfigChanged() closing unknow output! %d", ioHandle); 428 break; 429 } 430 ALOGV("ioConfigChanged() output %d closed", ioHandle); 431 432 gOutputs.removeItem(ioHandle); 433 for (int i = gStreamOutputMap.size() - 1; i >= 0 ; i--) { 434 if (gStreamOutputMap.valueAt(i) == ioHandle) { 435 gStreamOutputMap.removeItemsAt(i); 436 } 437 } 438 } break; 439 440 case OUTPUT_CONFIG_CHANGED: { 441 int index = gOutputs.indexOfKey(ioHandle); 442 if (index < 0) { 443 ALOGW("ioConfigChanged() modifying unknow output! %d", ioHandle); 444 break; 445 } 446 if (param2 == 0) break; 447 desc = (OutputDescriptor *)param2; 448 449 ALOGV("ioConfigChanged() new config for output %d samplingRate %d, format %d channels %d frameCount %d latency %d", 450 ioHandle, desc->samplingRate, desc->format, 451 desc->channels, desc->frameCount, desc->latency); 452 OutputDescriptor *outputDesc = gOutputs.valueAt(index); 453 delete outputDesc; 454 outputDesc = new OutputDescriptor(*desc); 455 gOutputs.replaceValueFor(ioHandle, outputDesc); 456 } break; 457 case INPUT_OPENED: 458 case INPUT_CLOSED: 459 case INPUT_CONFIG_CHANGED: 460 break; 461 462 } 463} 464 465void AudioSystem::setErrorCallback(audio_error_callback cb) { 466 Mutex::Autolock _l(gLock); 467 gAudioErrorCallback = cb; 468} 469 470bool AudioSystem::routedToA2dpOutput(audio_stream_type_t streamType) { 471 switch(streamType) { 472 case AUDIO_STREAM_MUSIC: 473 case AUDIO_STREAM_VOICE_CALL: 474 case AUDIO_STREAM_BLUETOOTH_SCO: 475 case AUDIO_STREAM_SYSTEM: 476 return true; 477 default: 478 return false; 479 } 480} 481 482 483// client singleton for AudioPolicyService binder interface 484sp<IAudioPolicyService> AudioSystem::gAudioPolicyService; 485sp<AudioSystem::AudioPolicyServiceClient> AudioSystem::gAudioPolicyServiceClient; 486 487 488// establish binder interface to AudioFlinger service 489const sp<IAudioPolicyService>& AudioSystem::get_audio_policy_service() 490{ 491 gLock.lock(); 492 if (gAudioPolicyService.get() == 0) { 493 sp<IServiceManager> sm = defaultServiceManager(); 494 sp<IBinder> binder; 495 do { 496 binder = sm->getService(String16("media.audio_policy")); 497 if (binder != 0) 498 break; 499 ALOGW("AudioPolicyService not published, waiting..."); 500 usleep(500000); // 0.5 s 501 } while(true); 502 if (gAudioPolicyServiceClient == NULL) { 503 gAudioPolicyServiceClient = new AudioPolicyServiceClient(); 504 } 505 binder->linkToDeath(gAudioPolicyServiceClient); 506 gAudioPolicyService = interface_cast<IAudioPolicyService>(binder); 507 gLock.unlock(); 508 } else { 509 gLock.unlock(); 510 } 511 return gAudioPolicyService; 512} 513 514status_t AudioSystem::setDeviceConnectionState(audio_devices_t device, 515 audio_policy_dev_state_t state, 516 const char *device_address) 517{ 518 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 519 const char *address = ""; 520 521 if (aps == 0) return PERMISSION_DENIED; 522 523 if (device_address != NULL) { 524 address = device_address; 525 } 526 527 return aps->setDeviceConnectionState(device, state, address); 528} 529 530audio_policy_dev_state_t AudioSystem::getDeviceConnectionState(audio_devices_t device, 531 const char *device_address) 532{ 533 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 534 if (aps == 0) return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 535 536 return aps->getDeviceConnectionState(device, device_address); 537} 538 539status_t AudioSystem::setPhoneState(audio_mode_t state) 540{ 541 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 542 if (aps == 0) return PERMISSION_DENIED; 543 544 return aps->setPhoneState(state); 545} 546 547status_t AudioSystem::setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) 548{ 549 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 550 if (aps == 0) return PERMISSION_DENIED; 551 return aps->setForceUse(usage, config); 552} 553 554audio_policy_forced_cfg_t AudioSystem::getForceUse(audio_policy_force_use_t usage) 555{ 556 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 557 if (aps == 0) return AUDIO_POLICY_FORCE_NONE; 558 return aps->getForceUse(usage); 559} 560 561 562audio_io_handle_t AudioSystem::getOutput(audio_stream_type_t stream, 563 uint32_t samplingRate, 564 uint32_t format, 565 uint32_t channels, 566 audio_policy_output_flags_t flags) 567{ 568 audio_io_handle_t output = 0; 569 // Do not use stream to output map cache if the direct output 570 // flag is set or if we are likely to use a direct output 571 // (e.g voice call stream @ 8kHz could use BT SCO device and be routed to 572 // a direct output on some platforms). 573 // TODO: the output cache and stream to output mapping implementation needs to 574 // be reworked for proper operation with direct outputs. This code is too specific 575 // to the first use case we want to cover (Voice Recognition and Voice Dialer over 576 // Bluetooth SCO 577 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) == 0 && 578 ((stream != AUDIO_STREAM_VOICE_CALL && stream != AUDIO_STREAM_BLUETOOTH_SCO) || 579 channels != AUDIO_CHANNEL_OUT_MONO || 580 (samplingRate != 8000 && samplingRate != 16000))) { 581 Mutex::Autolock _l(gLock); 582 output = AudioSystem::gStreamOutputMap.valueFor(stream); 583 ALOGV_IF((output != 0), "getOutput() read %d from cache for stream %d", output, stream); 584 } 585 if (output == 0) { 586 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 587 if (aps == 0) return 0; 588 output = aps->getOutput(stream, samplingRate, format, channels, flags); 589 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) == 0) { 590 Mutex::Autolock _l(gLock); 591 AudioSystem::gStreamOutputMap.add(stream, output); 592 } 593 } 594 return output; 595} 596 597status_t AudioSystem::startOutput(audio_io_handle_t output, 598 audio_stream_type_t stream, 599 int session) 600{ 601 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 602 if (aps == 0) return PERMISSION_DENIED; 603 return aps->startOutput(output, stream, session); 604} 605 606status_t AudioSystem::stopOutput(audio_io_handle_t output, 607 audio_stream_type_t stream, 608 int session) 609{ 610 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 611 if (aps == 0) return PERMISSION_DENIED; 612 return aps->stopOutput(output, stream, session); 613} 614 615void AudioSystem::releaseOutput(audio_io_handle_t output) 616{ 617 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 618 if (aps == 0) return; 619 aps->releaseOutput(output); 620} 621 622audio_io_handle_t AudioSystem::getInput(int inputSource, 623 uint32_t samplingRate, 624 uint32_t format, 625 uint32_t channels, 626 audio_in_acoustics_t acoustics, 627 int sessionId) 628{ 629 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 630 if (aps == 0) return 0; 631 return aps->getInput(inputSource, samplingRate, format, channels, acoustics, sessionId); 632} 633 634status_t AudioSystem::startInput(audio_io_handle_t input) 635{ 636 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 637 if (aps == 0) return PERMISSION_DENIED; 638 return aps->startInput(input); 639} 640 641status_t AudioSystem::stopInput(audio_io_handle_t input) 642{ 643 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 644 if (aps == 0) return PERMISSION_DENIED; 645 return aps->stopInput(input); 646} 647 648void AudioSystem::releaseInput(audio_io_handle_t input) 649{ 650 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 651 if (aps == 0) return; 652 aps->releaseInput(input); 653} 654 655status_t AudioSystem::initStreamVolume(audio_stream_type_t stream, 656 int indexMin, 657 int indexMax) 658{ 659 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 660 if (aps == 0) return PERMISSION_DENIED; 661 return aps->initStreamVolume(stream, indexMin, indexMax); 662} 663 664status_t AudioSystem::setStreamVolumeIndex(audio_stream_type_t stream, 665 int index, 666 audio_devices_t device) 667{ 668 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 669 if (aps == 0) return PERMISSION_DENIED; 670 return aps->setStreamVolumeIndex(stream, index, device); 671} 672 673status_t AudioSystem::getStreamVolumeIndex(audio_stream_type_t stream, 674 int *index, 675 audio_devices_t device) 676{ 677 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 678 if (aps == 0) return PERMISSION_DENIED; 679 return aps->getStreamVolumeIndex(stream, index, device); 680} 681 682uint32_t AudioSystem::getStrategyForStream(audio_stream_type_t stream) 683{ 684 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 685 if (aps == 0) return 0; 686 return aps->getStrategyForStream(stream); 687} 688 689uint32_t AudioSystem::getDevicesForStream(audio_stream_type_t stream) 690{ 691 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 692 if (aps == 0) return 0; 693 return aps->getDevicesForStream(stream); 694} 695 696audio_io_handle_t AudioSystem::getOutputForEffect(effect_descriptor_t *desc) 697{ 698 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 699 if (aps == 0) return PERMISSION_DENIED; 700 return aps->getOutputForEffect(desc); 701} 702 703status_t AudioSystem::registerEffect(effect_descriptor_t *desc, 704 audio_io_handle_t io, 705 uint32_t strategy, 706 int session, 707 int id) 708{ 709 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 710 if (aps == 0) return PERMISSION_DENIED; 711 return aps->registerEffect(desc, io, strategy, session, id); 712} 713 714status_t AudioSystem::unregisterEffect(int id) 715{ 716 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 717 if (aps == 0) return PERMISSION_DENIED; 718 return aps->unregisterEffect(id); 719} 720 721status_t AudioSystem::setEffectEnabled(int id, bool enabled) 722{ 723 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 724 if (aps == 0) return PERMISSION_DENIED; 725 return aps->setEffectEnabled(id, enabled); 726} 727 728status_t AudioSystem::isStreamActive(audio_stream_type_t stream, bool* state, uint32_t inPastMs) 729{ 730 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 731 if (aps == 0) return PERMISSION_DENIED; 732 if (state == NULL) return BAD_VALUE; 733 *state = aps->isStreamActive(stream, inPastMs); 734 return NO_ERROR; 735} 736 737 738void AudioSystem::clearAudioConfigCache() 739{ 740 Mutex::Autolock _l(gLock); 741 ALOGV("clearAudioConfigCache()"); 742 gStreamOutputMap.clear(); 743 gOutputs.clear(); 744} 745 746// --------------------------------------------------------------------------- 747 748void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who) { 749 Mutex::Autolock _l(AudioSystem::gLock); 750 AudioSystem::gAudioPolicyService.clear(); 751 752 ALOGW("AudioPolicyService server died!"); 753} 754 755}; // namespace android 756 757