AudioSystem.cpp revision 241fc78866b2aefd75cd1890df5a75b7008728e8
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} 205 206// DEPRECATED 207status_t AudioSystem::getOutputSamplingRate(int* samplingRate, int streamType) { 208 return getOutputSamplingRate(samplingRate, (audio_stream_type_t)streamType); 209} 210 211status_t AudioSystem::getOutputSamplingRate(int* samplingRate, audio_stream_type_t streamType) 212{ 213 OutputDescriptor *outputDesc; 214 audio_io_handle_t output; 215 216 if (streamType == AUDIO_STREAM_DEFAULT) { 217 streamType = AUDIO_STREAM_MUSIC; 218 } 219 220 output = getOutput(streamType); 221 if (output == 0) { 222 return PERMISSION_DENIED; 223 } 224 225 gLock.lock(); 226 outputDesc = AudioSystem::gOutputs.valueFor(output); 227 if (outputDesc == 0) { 228 ALOGV("getOutputSamplingRate() no output descriptor for output %d in gOutputs", output); 229 gLock.unlock(); 230 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 231 if (af == 0) return PERMISSION_DENIED; 232 *samplingRate = af->sampleRate(output); 233 } else { 234 ALOGV("getOutputSamplingRate() reading from output desc"); 235 *samplingRate = outputDesc->samplingRate; 236 gLock.unlock(); 237 } 238 239 ALOGV("getOutputSamplingRate() streamType %d, output %d, sampling rate %d", streamType, output, *samplingRate); 240 241 return NO_ERROR; 242} 243 244// DEPRECATED 245status_t AudioSystem::getOutputFrameCount(int* frameCount, int streamType) { 246 return getOutputFrameCount(frameCount, (audio_stream_type_t)streamType); 247} 248 249status_t AudioSystem::getOutputFrameCount(int* frameCount, audio_stream_type_t streamType) 250{ 251 OutputDescriptor *outputDesc; 252 audio_io_handle_t output; 253 254 if (streamType == AUDIO_STREAM_DEFAULT) { 255 streamType = AUDIO_STREAM_MUSIC; 256 } 257 258 output = getOutput(streamType); 259 if (output == 0) { 260 return PERMISSION_DENIED; 261 } 262 263 gLock.lock(); 264 outputDesc = AudioSystem::gOutputs.valueFor(output); 265 if (outputDesc == 0) { 266 gLock.unlock(); 267 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 268 if (af == 0) return PERMISSION_DENIED; 269 *frameCount = af->frameCount(output); 270 } else { 271 *frameCount = outputDesc->frameCount; 272 gLock.unlock(); 273 } 274 275 ALOGV("getOutputFrameCount() streamType %d, output %d, frameCount %d", streamType, output, *frameCount); 276 277 return NO_ERROR; 278} 279 280status_t AudioSystem::getOutputLatency(uint32_t* latency, audio_stream_type_t streamType) 281{ 282 OutputDescriptor *outputDesc; 283 audio_io_handle_t output; 284 285 if (streamType == AUDIO_STREAM_DEFAULT) { 286 streamType = AUDIO_STREAM_MUSIC; 287 } 288 289 output = getOutput(streamType); 290 if (output == 0) { 291 return PERMISSION_DENIED; 292 } 293 294 gLock.lock(); 295 outputDesc = AudioSystem::gOutputs.valueFor(output); 296 if (outputDesc == 0) { 297 gLock.unlock(); 298 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 299 if (af == 0) return PERMISSION_DENIED; 300 *latency = af->latency(output); 301 } else { 302 *latency = outputDesc->latency; 303 gLock.unlock(); 304 } 305 306 ALOGV("getOutputLatency() streamType %d, output %d, latency %d", streamType, output, *latency); 307 308 return NO_ERROR; 309} 310 311status_t AudioSystem::getInputBufferSize(uint32_t sampleRate, int format, int channelCount, 312 size_t* buffSize) 313{ 314 gLock.lock(); 315 // Do we have a stale gInBufferSize or are we requesting the input buffer size for new values 316 size_t inBuffSize = gInBuffSize; 317 if ((inBuffSize == 0) || (sampleRate != gPrevInSamplingRate) || (format != gPrevInFormat) 318 || (channelCount != gPrevInChannelCount)) { 319 gLock.unlock(); 320 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 321 if (af == 0) { 322 return PERMISSION_DENIED; 323 } 324 inBuffSize = af->getInputBufferSize(sampleRate, format, channelCount); 325 gLock.lock(); 326 // save the request params 327 gPrevInSamplingRate = sampleRate; 328 gPrevInFormat = format; 329 gPrevInChannelCount = channelCount; 330 331 gInBuffSize = inBuffSize; 332 } 333 gLock.unlock(); 334 *buffSize = inBuffSize; 335 336 return NO_ERROR; 337} 338 339status_t AudioSystem::setVoiceVolume(float value) 340{ 341 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 342 if (af == 0) return PERMISSION_DENIED; 343 return af->setVoiceVolume(value); 344} 345 346status_t AudioSystem::getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, audio_stream_type_t stream) 347{ 348 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 349 if (af == 0) return PERMISSION_DENIED; 350 351 if (stream == AUDIO_STREAM_DEFAULT) { 352 stream = AUDIO_STREAM_MUSIC; 353 } 354 355 return af->getRenderPosition(halFrames, dspFrames, getOutput(stream)); 356} 357 358unsigned int AudioSystem::getInputFramesLost(audio_io_handle_t ioHandle) { 359 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 360 unsigned int result = 0; 361 if (af == 0) return result; 362 if (ioHandle == 0) return result; 363 364 result = af->getInputFramesLost(ioHandle); 365 return result; 366} 367 368int AudioSystem::newAudioSessionId() { 369 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 370 if (af == 0) return 0; 371 return af->newAudioSessionId(); 372} 373 374void AudioSystem::acquireAudioSessionId(int audioSession) { 375 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 376 if (af != 0) { 377 af->acquireAudioSessionId(audioSession); 378 } 379} 380 381void AudioSystem::releaseAudioSessionId(int audioSession) { 382 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 383 if (af != 0) { 384 af->releaseAudioSessionId(audioSession); 385 } 386} 387 388// --------------------------------------------------------------------------- 389 390void AudioSystem::AudioFlingerClient::binderDied(const wp<IBinder>& who) { 391 Mutex::Autolock _l(AudioSystem::gLock); 392 393 AudioSystem::gAudioFlinger.clear(); 394 // clear output handles and stream to output map caches 395 AudioSystem::gStreamOutputMap.clear(); 396 AudioSystem::gOutputs.clear(); 397 398 if (gAudioErrorCallback) { 399 gAudioErrorCallback(DEAD_OBJECT); 400 } 401 ALOGW("AudioFlinger server died!"); 402} 403 404void AudioSystem::AudioFlingerClient::ioConfigChanged(int event, int ioHandle, void *param2) { 405 ALOGV("ioConfigChanged() event %d", event); 406 OutputDescriptor *desc; 407 uint32_t stream; 408 409 if (ioHandle == 0) return; 410 411 Mutex::Autolock _l(AudioSystem::gLock); 412 413 switch (event) { 414 case STREAM_CONFIG_CHANGED: 415 if (param2 == 0) break; 416 stream = *(uint32_t *)param2; 417 ALOGV("ioConfigChanged() STREAM_CONFIG_CHANGED stream %d, output %d", stream, ioHandle); 418 if (gStreamOutputMap.indexOfKey(stream) >= 0) { 419 gStreamOutputMap.replaceValueFor(stream, ioHandle); 420 } 421 break; 422 case OUTPUT_OPENED: { 423 if (gOutputs.indexOfKey(ioHandle) >= 0) { 424 ALOGV("ioConfigChanged() opening already existing output! %d", ioHandle); 425 break; 426 } 427 if (param2 == 0) break; 428 desc = (OutputDescriptor *)param2; 429 430 OutputDescriptor *outputDesc = new OutputDescriptor(*desc); 431 gOutputs.add(ioHandle, outputDesc); 432 ALOGV("ioConfigChanged() new output samplingRate %d, format %d channels %d frameCount %d latency %d", 433 outputDesc->samplingRate, outputDesc->format, outputDesc->channels, outputDesc->frameCount, outputDesc->latency); 434 } break; 435 case OUTPUT_CLOSED: { 436 if (gOutputs.indexOfKey(ioHandle) < 0) { 437 ALOGW("ioConfigChanged() closing unknow output! %d", ioHandle); 438 break; 439 } 440 ALOGV("ioConfigChanged() output %d closed", ioHandle); 441 442 gOutputs.removeItem(ioHandle); 443 for (int i = gStreamOutputMap.size() - 1; i >= 0 ; i--) { 444 if (gStreamOutputMap.valueAt(i) == ioHandle) { 445 gStreamOutputMap.removeItemsAt(i); 446 } 447 } 448 } break; 449 450 case OUTPUT_CONFIG_CHANGED: { 451 int index = gOutputs.indexOfKey(ioHandle); 452 if (index < 0) { 453 ALOGW("ioConfigChanged() modifying unknow output! %d", ioHandle); 454 break; 455 } 456 if (param2 == 0) break; 457 desc = (OutputDescriptor *)param2; 458 459 ALOGV("ioConfigChanged() new config for output %d samplingRate %d, format %d channels %d frameCount %d latency %d", 460 ioHandle, desc->samplingRate, desc->format, 461 desc->channels, desc->frameCount, desc->latency); 462 OutputDescriptor *outputDesc = gOutputs.valueAt(index); 463 delete outputDesc; 464 outputDesc = new OutputDescriptor(*desc); 465 gOutputs.replaceValueFor(ioHandle, outputDesc); 466 } break; 467 case INPUT_OPENED: 468 case INPUT_CLOSED: 469 case INPUT_CONFIG_CHANGED: 470 break; 471 472 } 473} 474 475void AudioSystem::setErrorCallback(audio_error_callback cb) { 476 Mutex::Autolock _l(gLock); 477 gAudioErrorCallback = cb; 478} 479 480bool AudioSystem::routedToA2dpOutput(audio_stream_type_t streamType) { 481 switch(streamType) { 482 case AUDIO_STREAM_MUSIC: 483 case AUDIO_STREAM_VOICE_CALL: 484 case AUDIO_STREAM_BLUETOOTH_SCO: 485 case AUDIO_STREAM_SYSTEM: 486 return true; 487 default: 488 return false; 489 } 490} 491 492 493// client singleton for AudioPolicyService binder interface 494sp<IAudioPolicyService> AudioSystem::gAudioPolicyService; 495sp<AudioSystem::AudioPolicyServiceClient> AudioSystem::gAudioPolicyServiceClient; 496 497 498// establish binder interface to AudioFlinger service 499const sp<IAudioPolicyService>& AudioSystem::get_audio_policy_service() 500{ 501 gLock.lock(); 502 if (gAudioPolicyService.get() == 0) { 503 sp<IServiceManager> sm = defaultServiceManager(); 504 sp<IBinder> binder; 505 do { 506 binder = sm->getService(String16("media.audio_policy")); 507 if (binder != 0) 508 break; 509 ALOGW("AudioPolicyService not published, waiting..."); 510 usleep(500000); // 0.5 s 511 } while(true); 512 if (gAudioPolicyServiceClient == NULL) { 513 gAudioPolicyServiceClient = new AudioPolicyServiceClient(); 514 } 515 binder->linkToDeath(gAudioPolicyServiceClient); 516 gAudioPolicyService = interface_cast<IAudioPolicyService>(binder); 517 gLock.unlock(); 518 } else { 519 gLock.unlock(); 520 } 521 return gAudioPolicyService; 522} 523 524status_t AudioSystem::setDeviceConnectionState(audio_devices_t device, 525 audio_policy_dev_state_t state, 526 const char *device_address) 527{ 528 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 529 const char *address = ""; 530 531 if (aps == 0) return PERMISSION_DENIED; 532 533 if (device_address != NULL) { 534 address = device_address; 535 } 536 537 return aps->setDeviceConnectionState(device, state, address); 538} 539 540audio_policy_dev_state_t AudioSystem::getDeviceConnectionState(audio_devices_t device, 541 const char *device_address) 542{ 543 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 544 if (aps == 0) return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 545 546 return aps->getDeviceConnectionState(device, device_address); 547} 548 549status_t AudioSystem::setPhoneState(audio_mode_t state) 550{ 551 if (uint32_t(state) >= AUDIO_MODE_CNT) return BAD_VALUE; 552 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 553 if (aps == 0) return PERMISSION_DENIED; 554 555 return aps->setPhoneState(state); 556} 557 558status_t AudioSystem::setRingerMode(uint32_t mode, uint32_t mask) 559{ 560 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 561 if (aps == 0) return PERMISSION_DENIED; 562 return aps->setRingerMode(mode, mask); 563} 564 565status_t AudioSystem::setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) 566{ 567 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 568 if (aps == 0) return PERMISSION_DENIED; 569 return aps->setForceUse(usage, config); 570} 571 572audio_policy_forced_cfg_t AudioSystem::getForceUse(audio_policy_force_use_t usage) 573{ 574 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 575 if (aps == 0) return AUDIO_POLICY_FORCE_NONE; 576 return aps->getForceUse(usage); 577} 578 579 580audio_io_handle_t AudioSystem::getOutput(audio_stream_type_t stream, 581 uint32_t samplingRate, 582 uint32_t format, 583 uint32_t channels, 584 audio_policy_output_flags_t flags) 585{ 586 audio_io_handle_t output = 0; 587 // Do not use stream to output map cache if the direct output 588 // flag is set or if we are likely to use a direct output 589 // (e.g voice call stream @ 8kHz could use BT SCO device and be routed to 590 // a direct output on some platforms). 591 // TODO: the output cache and stream to output mapping implementation needs to 592 // be reworked for proper operation with direct outputs. This code is too specific 593 // to the first use case we want to cover (Voice Recognition and Voice Dialer over 594 // Bluetooth SCO 595 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) == 0 && 596 ((stream != AUDIO_STREAM_VOICE_CALL && stream != AUDIO_STREAM_BLUETOOTH_SCO) || 597 channels != AUDIO_CHANNEL_OUT_MONO || 598 (samplingRate != 8000 && samplingRate != 16000))) { 599 Mutex::Autolock _l(gLock); 600 output = AudioSystem::gStreamOutputMap.valueFor(stream); 601 ALOGV_IF((output != 0), "getOutput() read %d from cache for stream %d", output, stream); 602 } 603 if (output == 0) { 604 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 605 if (aps == 0) return 0; 606 output = aps->getOutput(stream, samplingRate, format, channels, flags); 607 if ((flags & AUDIO_POLICY_OUTPUT_FLAG_DIRECT) == 0) { 608 Mutex::Autolock _l(gLock); 609 AudioSystem::gStreamOutputMap.add(stream, output); 610 } 611 } 612 return output; 613} 614 615status_t AudioSystem::startOutput(audio_io_handle_t output, 616 audio_stream_type_t stream, 617 int session) 618{ 619 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 620 if (aps == 0) return PERMISSION_DENIED; 621 return aps->startOutput(output, stream, session); 622} 623 624status_t AudioSystem::stopOutput(audio_io_handle_t output, 625 audio_stream_type_t stream, 626 int session) 627{ 628 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 629 if (aps == 0) return PERMISSION_DENIED; 630 return aps->stopOutput(output, stream, session); 631} 632 633void AudioSystem::releaseOutput(audio_io_handle_t output) 634{ 635 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 636 if (aps == 0) return; 637 aps->releaseOutput(output); 638} 639 640audio_io_handle_t AudioSystem::getInput(int inputSource, 641 uint32_t samplingRate, 642 uint32_t format, 643 uint32_t channels, 644 audio_in_acoustics_t acoustics, 645 int sessionId) 646{ 647 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 648 if (aps == 0) return 0; 649 return aps->getInput(inputSource, samplingRate, format, channels, acoustics, sessionId); 650} 651 652status_t AudioSystem::startInput(audio_io_handle_t input) 653{ 654 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 655 if (aps == 0) return PERMISSION_DENIED; 656 return aps->startInput(input); 657} 658 659status_t AudioSystem::stopInput(audio_io_handle_t input) 660{ 661 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 662 if (aps == 0) return PERMISSION_DENIED; 663 return aps->stopInput(input); 664} 665 666void AudioSystem::releaseInput(audio_io_handle_t input) 667{ 668 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 669 if (aps == 0) return; 670 aps->releaseInput(input); 671} 672 673status_t AudioSystem::initStreamVolume(audio_stream_type_t stream, 674 int indexMin, 675 int indexMax) 676{ 677 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 678 if (aps == 0) return PERMISSION_DENIED; 679 return aps->initStreamVolume(stream, indexMin, indexMax); 680} 681 682status_t AudioSystem::setStreamVolumeIndex(audio_stream_type_t stream, 683 int index, 684 audio_devices_t device) 685{ 686 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 687 if (aps == 0) return PERMISSION_DENIED; 688 return aps->setStreamVolumeIndex(stream, index, device); 689} 690 691status_t AudioSystem::getStreamVolumeIndex(audio_stream_type_t stream, 692 int *index, 693 audio_devices_t device) 694{ 695 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 696 if (aps == 0) return PERMISSION_DENIED; 697 return aps->getStreamVolumeIndex(stream, index, device); 698} 699 700uint32_t AudioSystem::getStrategyForStream(audio_stream_type_t stream) 701{ 702 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 703 if (aps == 0) return 0; 704 return aps->getStrategyForStream(stream); 705} 706 707uint32_t AudioSystem::getDevicesForStream(audio_stream_type_t stream) 708{ 709 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 710 if (aps == 0) return 0; 711 return aps->getDevicesForStream(stream); 712} 713 714audio_io_handle_t AudioSystem::getOutputForEffect(effect_descriptor_t *desc) 715{ 716 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 717 if (aps == 0) return PERMISSION_DENIED; 718 return aps->getOutputForEffect(desc); 719} 720 721status_t AudioSystem::registerEffect(effect_descriptor_t *desc, 722 audio_io_handle_t io, 723 uint32_t strategy, 724 int session, 725 int id) 726{ 727 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 728 if (aps == 0) return PERMISSION_DENIED; 729 return aps->registerEffect(desc, io, strategy, session, id); 730} 731 732status_t AudioSystem::unregisterEffect(int id) 733{ 734 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 735 if (aps == 0) return PERMISSION_DENIED; 736 return aps->unregisterEffect(id); 737} 738 739status_t AudioSystem::setEffectEnabled(int id, bool enabled) 740{ 741 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 742 if (aps == 0) return PERMISSION_DENIED; 743 return aps->setEffectEnabled(id, enabled); 744} 745 746status_t AudioSystem::isStreamActive(audio_stream_type_t stream, bool* state, uint32_t inPastMs) 747{ 748 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 749 if (aps == 0) return PERMISSION_DENIED; 750 if (state == NULL) return BAD_VALUE; 751 *state = aps->isStreamActive(stream, inPastMs); 752 return NO_ERROR; 753} 754 755 756void AudioSystem::clearAudioConfigCache() 757{ 758 Mutex::Autolock _l(gLock); 759 ALOGV("clearAudioConfigCache()"); 760 gStreamOutputMap.clear(); 761 gOutputs.clear(); 762} 763 764// --------------------------------------------------------------------------- 765 766void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who) { 767 Mutex::Autolock _l(AudioSystem::gLock); 768 AudioSystem::gAudioPolicyService.clear(); 769 770 ALOGW("AudioPolicyService server died!"); 771} 772 773}; // namespace android 774 775