AudioSystem.cpp revision ad3af3305f024bcbbd55c894a4995e449498e1ba
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 38 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; 43audio_format_t AudioSystem::gPrevInFormat = AUDIO_FORMAT_PCM_16_BIT; 44audio_channel_mask_t AudioSystem::gPrevInChannelMask = AUDIO_CHANNEL_IN_MONO; 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 == 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, 124 audio_io_handle_t output) 125{ 126 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 127 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 128 if (af == 0) return PERMISSION_DENIED; 129 af->setStreamVolume(stream, value, output); 130 return NO_ERROR; 131} 132 133status_t AudioSystem::setStreamMute(audio_stream_type_t stream, bool mute) 134{ 135 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 136 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 137 if (af == 0) return PERMISSION_DENIED; 138 af->setStreamMute(stream, mute); 139 return NO_ERROR; 140} 141 142status_t AudioSystem::getStreamVolume(audio_stream_type_t stream, float* volume, 143 audio_io_handle_t output) 144{ 145 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 146 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 147 if (af == 0) return PERMISSION_DENIED; 148 *volume = af->streamVolume(stream, output); 149 return NO_ERROR; 150} 151 152status_t AudioSystem::getStreamMute(audio_stream_type_t stream, bool* mute) 153{ 154 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 155 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 156 if (af == 0) return PERMISSION_DENIED; 157 *mute = af->streamMute(stream); 158 return NO_ERROR; 159} 160 161status_t AudioSystem::setMode(audio_mode_t mode) 162{ 163 if (uint32_t(mode) >= AUDIO_MODE_CNT) return BAD_VALUE; 164 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 165 if (af == 0) return PERMISSION_DENIED; 166 return af->setMode(mode); 167} 168 169status_t AudioSystem::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs) { 170 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 171 if (af == 0) return PERMISSION_DENIED; 172 return af->setParameters(ioHandle, keyValuePairs); 173} 174 175String8 AudioSystem::getParameters(audio_io_handle_t ioHandle, const String8& keys) { 176 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 177 String8 result = String8(""); 178 if (af == 0) return result; 179 180 result = af->getParameters(ioHandle, keys); 181 return result; 182} 183 184// convert volume steps to natural log scale 185 186// change this value to change volume scaling 187static const float dBPerStep = 0.5f; 188// shouldn't need to touch these 189static const float dBConvert = -dBPerStep * 2.302585093f / 20.0f; 190static const float dBConvertInverse = 1.0f / dBConvert; 191 192float AudioSystem::linearToLog(int volume) 193{ 194 // float v = volume ? exp(float(100 - volume) * dBConvert) : 0; 195 // ALOGD("linearToLog(%d)=%f", volume, v); 196 // return v; 197 return volume ? exp(float(100 - volume) * dBConvert) : 0; 198} 199 200int AudioSystem::logToLinear(float volume) 201{ 202 // int v = volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 203 // ALOGD("logTolinear(%d)=%f", v, volume); 204 // return v; 205 return volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 206} 207 208status_t AudioSystem::getOutputSamplingRate(uint32_t* samplingRate, audio_stream_type_t streamType) 209{ 210 audio_io_handle_t output; 211 212 if (streamType == AUDIO_STREAM_DEFAULT) { 213 streamType = AUDIO_STREAM_MUSIC; 214 } 215 216 output = getOutput(streamType); 217 if (output == 0) { 218 return PERMISSION_DENIED; 219 } 220 221 return getSamplingRate(output, streamType, samplingRate); 222} 223 224status_t AudioSystem::getSamplingRate(audio_io_handle_t output, 225 audio_stream_type_t streamType, 226 uint32_t* samplingRate) 227{ 228 OutputDescriptor *outputDesc; 229 230 gLock.lock(); 231 outputDesc = AudioSystem::gOutputs.valueFor(output); 232 if (outputDesc == NULL) { 233 ALOGV("getOutputSamplingRate() no output descriptor for output %d in gOutputs", output); 234 gLock.unlock(); 235 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 236 if (af == 0) return PERMISSION_DENIED; 237 *samplingRate = af->sampleRate(output); 238 } else { 239 ALOGV("getOutputSamplingRate() reading from output desc"); 240 *samplingRate = outputDesc->samplingRate; 241 gLock.unlock(); 242 } 243 244 ALOGV("getSamplingRate() streamType %d, output %d, sampling rate %u", streamType, output, 245 *samplingRate); 246 247 return NO_ERROR; 248} 249 250status_t AudioSystem::getOutputFrameCount(size_t* frameCount, audio_stream_type_t streamType) 251{ 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 return getFrameCount(output, streamType, frameCount); 264} 265 266status_t AudioSystem::getFrameCount(audio_io_handle_t output, 267 audio_stream_type_t streamType, 268 size_t* frameCount) 269{ 270 OutputDescriptor *outputDesc; 271 272 gLock.lock(); 273 outputDesc = AudioSystem::gOutputs.valueFor(output); 274 if (outputDesc == NULL) { 275 gLock.unlock(); 276 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 277 if (af == 0) return PERMISSION_DENIED; 278 *frameCount = af->frameCount(output); 279 } else { 280 *frameCount = outputDesc->frameCount; 281 gLock.unlock(); 282 } 283 284 ALOGV("getFrameCount() streamType %d, output %d, frameCount %d", streamType, output, 285 *frameCount); 286 287 return NO_ERROR; 288} 289 290status_t AudioSystem::getOutputLatency(uint32_t* latency, audio_stream_type_t streamType) 291{ 292 audio_io_handle_t output; 293 294 if (streamType == AUDIO_STREAM_DEFAULT) { 295 streamType = AUDIO_STREAM_MUSIC; 296 } 297 298 output = getOutput(streamType); 299 if (output == 0) { 300 return PERMISSION_DENIED; 301 } 302 303 return getLatency(output, streamType, latency); 304} 305 306status_t AudioSystem::getLatency(audio_io_handle_t output, 307 audio_stream_type_t streamType, 308 uint32_t* latency) 309{ 310 OutputDescriptor *outputDesc; 311 312 gLock.lock(); 313 outputDesc = AudioSystem::gOutputs.valueFor(output); 314 if (outputDesc == NULL) { 315 gLock.unlock(); 316 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 317 if (af == 0) return PERMISSION_DENIED; 318 *latency = af->latency(output); 319 } else { 320 *latency = outputDesc->latency; 321 gLock.unlock(); 322 } 323 324 ALOGV("getLatency() streamType %d, output %d, latency %d", streamType, output, *latency); 325 326 return NO_ERROR; 327} 328 329status_t AudioSystem::getInputBufferSize(uint32_t sampleRate, audio_format_t format, 330 audio_channel_mask_t channelMask, size_t* buffSize) 331{ 332 gLock.lock(); 333 // Do we have a stale gInBufferSize or are we requesting the input buffer size for new values 334 size_t inBuffSize = gInBuffSize; 335 if ((inBuffSize == 0) || (sampleRate != gPrevInSamplingRate) || (format != gPrevInFormat) 336 || (channelMask != gPrevInChannelMask)) { 337 gLock.unlock(); 338 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 339 if (af == 0) { 340 return PERMISSION_DENIED; 341 } 342 inBuffSize = af->getInputBufferSize(sampleRate, format, channelMask); 343 gLock.lock(); 344 // save the request params 345 gPrevInSamplingRate = sampleRate; 346 gPrevInFormat = format; 347 gPrevInChannelMask = channelMask; 348 349 gInBuffSize = inBuffSize; 350 } 351 gLock.unlock(); 352 *buffSize = inBuffSize; 353 354 return NO_ERROR; 355} 356 357status_t AudioSystem::setVoiceVolume(float value) 358{ 359 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 360 if (af == 0) return PERMISSION_DENIED; 361 return af->setVoiceVolume(value); 362} 363 364status_t AudioSystem::getRenderPosition(audio_io_handle_t output, size_t *halFrames, 365 size_t *dspFrames, audio_stream_type_t stream) 366{ 367 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 368 if (af == 0) return PERMISSION_DENIED; 369 370 if (stream == AUDIO_STREAM_DEFAULT) { 371 stream = AUDIO_STREAM_MUSIC; 372 } 373 374 if (output == 0) { 375 output = getOutput(stream); 376 } 377 378 return af->getRenderPosition(halFrames, dspFrames, output); 379} 380 381size_t AudioSystem::getInputFramesLost(audio_io_handle_t ioHandle) { 382 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 383 unsigned int result = 0; 384 if (af == 0) return result; 385 if (ioHandle == 0) return result; 386 387 result = af->getInputFramesLost(ioHandle); 388 return result; 389} 390 391int AudioSystem::newAudioSessionId() { 392 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 393 if (af == 0) return 0; 394 return af->newAudioSessionId(); 395} 396 397void AudioSystem::acquireAudioSessionId(int audioSession) { 398 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 399 if (af != 0) { 400 af->acquireAudioSessionId(audioSession); 401 } 402} 403 404void AudioSystem::releaseAudioSessionId(int audioSession) { 405 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 406 if (af != 0) { 407 af->releaseAudioSessionId(audioSession); 408 } 409} 410 411// --------------------------------------------------------------------------- 412 413void AudioSystem::AudioFlingerClient::binderDied(const wp<IBinder>& who) { 414 Mutex::Autolock _l(AudioSystem::gLock); 415 416 AudioSystem::gAudioFlinger.clear(); 417 // clear output handles and stream to output map caches 418 AudioSystem::gOutputs.clear(); 419 420 if (gAudioErrorCallback) { 421 gAudioErrorCallback(DEAD_OBJECT); 422 } 423 ALOGW("AudioFlinger server died!"); 424} 425 426void AudioSystem::AudioFlingerClient::ioConfigChanged(int event, audio_io_handle_t ioHandle, 427 const void *param2) { 428 ALOGV("ioConfigChanged() event %d", event); 429 const OutputDescriptor *desc; 430 audio_stream_type_t stream; 431 432 if (ioHandle == 0) return; 433 434 Mutex::Autolock _l(AudioSystem::gLock); 435 436 switch (event) { 437 case STREAM_CONFIG_CHANGED: 438 break; 439 case OUTPUT_OPENED: { 440 if (gOutputs.indexOfKey(ioHandle) >= 0) { 441 ALOGV("ioConfigChanged() opening already existing output! %d", ioHandle); 442 break; 443 } 444 if (param2 == NULL) break; 445 desc = (const OutputDescriptor *)param2; 446 447 OutputDescriptor *outputDesc = new OutputDescriptor(*desc); 448 gOutputs.add(ioHandle, outputDesc); 449 ALOGV("ioConfigChanged() new output samplingRate %u, format %d channels %#x frameCount %u " 450 "latency %d", 451 outputDesc->samplingRate, outputDesc->format, outputDesc->channels, 452 outputDesc->frameCount, outputDesc->latency); 453 } break; 454 case OUTPUT_CLOSED: { 455 if (gOutputs.indexOfKey(ioHandle) < 0) { 456 ALOGW("ioConfigChanged() closing unknow output! %d", ioHandle); 457 break; 458 } 459 ALOGV("ioConfigChanged() output %d closed", ioHandle); 460 461 gOutputs.removeItem(ioHandle); 462 } break; 463 464 case OUTPUT_CONFIG_CHANGED: { 465 int index = gOutputs.indexOfKey(ioHandle); 466 if (index < 0) { 467 ALOGW("ioConfigChanged() modifying unknow output! %d", ioHandle); 468 break; 469 } 470 if (param2 == NULL) break; 471 desc = (const OutputDescriptor *)param2; 472 473 ALOGV("ioConfigChanged() new config for output %d samplingRate %u, format %d channels %#x " 474 "frameCount %d latency %d", 475 ioHandle, desc->samplingRate, desc->format, 476 desc->channels, desc->frameCount, desc->latency); 477 OutputDescriptor *outputDesc = gOutputs.valueAt(index); 478 delete outputDesc; 479 outputDesc = new OutputDescriptor(*desc); 480 gOutputs.replaceValueFor(ioHandle, outputDesc); 481 } break; 482 case INPUT_OPENED: 483 case INPUT_CLOSED: 484 case INPUT_CONFIG_CHANGED: 485 break; 486 487 } 488} 489 490void AudioSystem::setErrorCallback(audio_error_callback cb) { 491 Mutex::Autolock _l(gLock); 492 gAudioErrorCallback = cb; 493} 494 495bool AudioSystem::routedToA2dpOutput(audio_stream_type_t streamType) { 496 switch (streamType) { 497 case AUDIO_STREAM_MUSIC: 498 case AUDIO_STREAM_VOICE_CALL: 499 case AUDIO_STREAM_BLUETOOTH_SCO: 500 case AUDIO_STREAM_SYSTEM: 501 return true; 502 default: 503 return false; 504 } 505} 506 507 508// client singleton for AudioPolicyService binder interface 509sp<IAudioPolicyService> AudioSystem::gAudioPolicyService; 510sp<AudioSystem::AudioPolicyServiceClient> AudioSystem::gAudioPolicyServiceClient; 511 512 513// establish binder interface to AudioPolicy service 514const sp<IAudioPolicyService>& AudioSystem::get_audio_policy_service() 515{ 516 gLock.lock(); 517 if (gAudioPolicyService == 0) { 518 sp<IServiceManager> sm = defaultServiceManager(); 519 sp<IBinder> binder; 520 do { 521 binder = sm->getService(String16("media.audio_policy")); 522 if (binder != 0) 523 break; 524 ALOGW("AudioPolicyService not published, waiting..."); 525 usleep(500000); // 0.5 s 526 } while (true); 527 if (gAudioPolicyServiceClient == NULL) { 528 gAudioPolicyServiceClient = new AudioPolicyServiceClient(); 529 } 530 binder->linkToDeath(gAudioPolicyServiceClient); 531 gAudioPolicyService = interface_cast<IAudioPolicyService>(binder); 532 gLock.unlock(); 533 } else { 534 gLock.unlock(); 535 } 536 return gAudioPolicyService; 537} 538 539status_t AudioSystem::setDeviceConnectionState(audio_devices_t device, 540 audio_policy_dev_state_t state, 541 const char *device_address) 542{ 543 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 544 const char *address = ""; 545 546 if (aps == 0) return PERMISSION_DENIED; 547 548 if (device_address != NULL) { 549 address = device_address; 550 } 551 552 return aps->setDeviceConnectionState(device, state, address); 553} 554 555audio_policy_dev_state_t AudioSystem::getDeviceConnectionState(audio_devices_t device, 556 const char *device_address) 557{ 558 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 559 if (aps == 0) return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 560 561 return aps->getDeviceConnectionState(device, device_address); 562} 563 564status_t AudioSystem::setPhoneState(audio_mode_t state) 565{ 566 if (uint32_t(state) >= AUDIO_MODE_CNT) return BAD_VALUE; 567 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 568 if (aps == 0) return PERMISSION_DENIED; 569 570 return aps->setPhoneState(state); 571} 572 573status_t AudioSystem::setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) 574{ 575 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 576 if (aps == 0) return PERMISSION_DENIED; 577 return aps->setForceUse(usage, config); 578} 579 580audio_policy_forced_cfg_t AudioSystem::getForceUse(audio_policy_force_use_t usage) 581{ 582 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 583 if (aps == 0) return AUDIO_POLICY_FORCE_NONE; 584 return aps->getForceUse(usage); 585} 586 587 588audio_io_handle_t AudioSystem::getOutput(audio_stream_type_t stream, 589 uint32_t samplingRate, 590 audio_format_t format, 591 audio_channel_mask_t channelMask, 592 audio_output_flags_t flags, 593 const audio_offload_info_t *offloadInfo) 594{ 595 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 596 if (aps == 0) return 0; 597 return aps->getOutput(stream, samplingRate, format, channelMask, flags, offloadInfo); 598} 599 600status_t AudioSystem::startOutput(audio_io_handle_t output, 601 audio_stream_type_t stream, 602 int session) 603{ 604 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 605 if (aps == 0) return PERMISSION_DENIED; 606 return aps->startOutput(output, stream, session); 607} 608 609status_t AudioSystem::stopOutput(audio_io_handle_t output, 610 audio_stream_type_t stream, 611 int session) 612{ 613 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 614 if (aps == 0) return PERMISSION_DENIED; 615 return aps->stopOutput(output, stream, session); 616} 617 618void AudioSystem::releaseOutput(audio_io_handle_t output) 619{ 620 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 621 if (aps == 0) return; 622 aps->releaseOutput(output); 623} 624 625audio_io_handle_t AudioSystem::getInput(audio_source_t inputSource, 626 uint32_t samplingRate, 627 audio_format_t format, 628 audio_channel_mask_t channelMask, 629 int sessionId) 630{ 631 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 632 if (aps == 0) return 0; 633 return aps->getInput(inputSource, samplingRate, format, channelMask, sessionId); 634} 635 636status_t AudioSystem::startInput(audio_io_handle_t input) 637{ 638 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 639 if (aps == 0) return PERMISSION_DENIED; 640 return aps->startInput(input); 641} 642 643status_t AudioSystem::stopInput(audio_io_handle_t input) 644{ 645 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 646 if (aps == 0) return PERMISSION_DENIED; 647 return aps->stopInput(input); 648} 649 650void AudioSystem::releaseInput(audio_io_handle_t input) 651{ 652 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 653 if (aps == 0) return; 654 aps->releaseInput(input); 655} 656 657status_t AudioSystem::initStreamVolume(audio_stream_type_t stream, 658 int indexMin, 659 int indexMax) 660{ 661 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 662 if (aps == 0) return PERMISSION_DENIED; 663 return aps->initStreamVolume(stream, indexMin, indexMax); 664} 665 666status_t AudioSystem::setStreamVolumeIndex(audio_stream_type_t stream, 667 int index, 668 audio_devices_t device) 669{ 670 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 671 if (aps == 0) return PERMISSION_DENIED; 672 return aps->setStreamVolumeIndex(stream, index, device); 673} 674 675status_t AudioSystem::getStreamVolumeIndex(audio_stream_type_t stream, 676 int *index, 677 audio_devices_t device) 678{ 679 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 680 if (aps == 0) return PERMISSION_DENIED; 681 return aps->getStreamVolumeIndex(stream, index, device); 682} 683 684uint32_t AudioSystem::getStrategyForStream(audio_stream_type_t stream) 685{ 686 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 687 if (aps == 0) return 0; 688 return aps->getStrategyForStream(stream); 689} 690 691audio_devices_t AudioSystem::getDevicesForStream(audio_stream_type_t stream) 692{ 693 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 694 if (aps == 0) return (audio_devices_t)0; 695 return aps->getDevicesForStream(stream); 696} 697 698audio_io_handle_t AudioSystem::getOutputForEffect(const effect_descriptor_t *desc) 699{ 700 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 701 if (aps == 0) return PERMISSION_DENIED; 702 return aps->getOutputForEffect(desc); 703} 704 705status_t AudioSystem::registerEffect(const effect_descriptor_t *desc, 706 audio_io_handle_t io, 707 uint32_t strategy, 708 int session, 709 int id) 710{ 711 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 712 if (aps == 0) return PERMISSION_DENIED; 713 return aps->registerEffect(desc, io, strategy, session, id); 714} 715 716status_t AudioSystem::unregisterEffect(int id) 717{ 718 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 719 if (aps == 0) return PERMISSION_DENIED; 720 return aps->unregisterEffect(id); 721} 722 723status_t AudioSystem::setEffectEnabled(int id, bool enabled) 724{ 725 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 726 if (aps == 0) return PERMISSION_DENIED; 727 return aps->setEffectEnabled(id, enabled); 728} 729 730status_t AudioSystem::isStreamActive(audio_stream_type_t stream, bool* state, uint32_t inPastMs) 731{ 732 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 733 if (aps == 0) return PERMISSION_DENIED; 734 if (state == NULL) return BAD_VALUE; 735 *state = aps->isStreamActive(stream, inPastMs); 736 return NO_ERROR; 737} 738 739status_t AudioSystem::isStreamActiveRemotely(audio_stream_type_t stream, bool* state, 740 uint32_t inPastMs) 741{ 742 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 743 if (aps == 0) return PERMISSION_DENIED; 744 if (state == NULL) return BAD_VALUE; 745 *state = aps->isStreamActiveRemotely(stream, inPastMs); 746 return NO_ERROR; 747} 748 749status_t AudioSystem::isSourceActive(audio_source_t stream, bool* state) 750{ 751 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 752 if (aps == 0) return PERMISSION_DENIED; 753 if (state == NULL) return BAD_VALUE; 754 *state = aps->isSourceActive(stream); 755 return NO_ERROR; 756} 757 758uint32_t AudioSystem::getPrimaryOutputSamplingRate() 759{ 760 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 761 if (af == 0) return 0; 762 return af->getPrimaryOutputSamplingRate(); 763} 764 765size_t AudioSystem::getPrimaryOutputFrameCount() 766{ 767 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 768 if (af == 0) return 0; 769 return af->getPrimaryOutputFrameCount(); 770} 771 772void AudioSystem::clearAudioConfigCache() 773{ 774 Mutex::Autolock _l(gLock); 775 ALOGV("clearAudioConfigCache()"); 776 gOutputs.clear(); 777} 778 779bool AudioSystem::isOffloadSupported(const audio_offload_info_t& info) 780{ 781 ALOGV("isOffloadSupported()"); 782 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 783 if (aps == 0) return false; 784 return aps->isOffloadSupported(info); 785} 786 787// --------------------------------------------------------------------------- 788 789void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who) { 790 Mutex::Autolock _l(AudioSystem::gLock); 791 AudioSystem::gAudioPolicyService.clear(); 792 793 ALOGW("AudioPolicyService server died!"); 794} 795 796}; // namespace android 797