AudioSystem.cpp revision baac183f3808d7b68f184647a97bd381620415fe
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/IAudioFlinger.h> 24#include <media/IAudioPolicyService.h> 25#include <math.h> 26 27#include <system/audio.h> 28 29// ---------------------------------------------------------------------------- 30 31namespace android { 32 33// client singleton for AudioFlinger binder interface 34Mutex AudioSystem::gLock; 35Mutex AudioSystem::gLockCache; 36Mutex AudioSystem::gLockAPS; 37Mutex AudioSystem::gLockAPC; 38sp<IAudioFlinger> AudioSystem::gAudioFlinger; 39sp<AudioSystem::AudioFlingerClient> AudioSystem::gAudioFlingerClient; 40audio_error_callback AudioSystem::gAudioErrorCallback = NULL; 41 42// Cached values for output handles 43DefaultKeyedVector<audio_io_handle_t, AudioSystem::OutputDescriptor *> AudioSystem::gOutputs(NULL); 44 45// Cached values for recording queries, all protected by gLock 46uint32_t AudioSystem::gPrevInSamplingRate; 47audio_format_t AudioSystem::gPrevInFormat; 48audio_channel_mask_t AudioSystem::gPrevInChannelMask; 49size_t AudioSystem::gInBuffSize = 0; // zero indicates cache is invalid 50 51sp<AudioSystem::AudioPortCallback> AudioSystem::gAudioPortCallback; 52 53// establish binder interface to AudioFlinger service 54const sp<IAudioFlinger> AudioSystem::get_audio_flinger() 55{ 56 sp<IAudioFlinger> af; 57 sp<AudioFlingerClient> afc; 58 { 59 Mutex::Autolock _l(gLock); 60 if (gAudioFlinger == 0) { 61 sp<IServiceManager> sm = defaultServiceManager(); 62 sp<IBinder> binder; 63 do { 64 binder = sm->getService(String16("media.audio_flinger")); 65 if (binder != 0) 66 break; 67 ALOGW("AudioFlinger not published, waiting..."); 68 usleep(500000); // 0.5 s 69 } while (true); 70 if (gAudioFlingerClient == NULL) { 71 gAudioFlingerClient = new AudioFlingerClient(); 72 } else { 73 if (gAudioErrorCallback) { 74 gAudioErrorCallback(NO_ERROR); 75 } 76 } 77 binder->linkToDeath(gAudioFlingerClient); 78 gAudioFlinger = interface_cast<IAudioFlinger>(binder); 79 LOG_ALWAYS_FATAL_IF(gAudioFlinger == 0); 80 afc = gAudioFlingerClient; 81 } 82 af = gAudioFlinger; 83 } 84 if (afc != 0) { 85 af->registerClient(afc); 86 } 87 return af; 88} 89 90/* static */ status_t AudioSystem::checkAudioFlinger() 91{ 92 if (defaultServiceManager()->checkService(String16("media.audio_flinger")) != 0) { 93 return NO_ERROR; 94 } 95 return DEAD_OBJECT; 96} 97 98status_t AudioSystem::muteMicrophone(bool state) 99{ 100 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 101 if (af == 0) return PERMISSION_DENIED; 102 return af->setMicMute(state); 103} 104 105status_t AudioSystem::isMicrophoneMuted(bool* state) 106{ 107 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 108 if (af == 0) return PERMISSION_DENIED; 109 *state = af->getMicMute(); 110 return NO_ERROR; 111} 112 113status_t AudioSystem::setMasterVolume(float value) 114{ 115 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 116 if (af == 0) return PERMISSION_DENIED; 117 af->setMasterVolume(value); 118 return NO_ERROR; 119} 120 121status_t AudioSystem::setMasterMute(bool mute) 122{ 123 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 124 if (af == 0) return PERMISSION_DENIED; 125 af->setMasterMute(mute); 126 return NO_ERROR; 127} 128 129status_t AudioSystem::getMasterVolume(float* volume) 130{ 131 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 132 if (af == 0) return PERMISSION_DENIED; 133 *volume = af->masterVolume(); 134 return NO_ERROR; 135} 136 137status_t AudioSystem::getMasterMute(bool* mute) 138{ 139 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 140 if (af == 0) return PERMISSION_DENIED; 141 *mute = af->masterMute(); 142 return NO_ERROR; 143} 144 145status_t AudioSystem::setStreamVolume(audio_stream_type_t stream, float value, 146 audio_io_handle_t output) 147{ 148 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 149 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 150 if (af == 0) return PERMISSION_DENIED; 151 af->setStreamVolume(stream, value, output); 152 return NO_ERROR; 153} 154 155status_t AudioSystem::setStreamMute(audio_stream_type_t stream, bool mute) 156{ 157 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 158 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 159 if (af == 0) return PERMISSION_DENIED; 160 af->setStreamMute(stream, mute); 161 return NO_ERROR; 162} 163 164status_t AudioSystem::getStreamVolume(audio_stream_type_t stream, float* volume, 165 audio_io_handle_t output) 166{ 167 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 168 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 169 if (af == 0) return PERMISSION_DENIED; 170 *volume = af->streamVolume(stream, output); 171 return NO_ERROR; 172} 173 174status_t AudioSystem::getStreamMute(audio_stream_type_t stream, bool* mute) 175{ 176 if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE; 177 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 178 if (af == 0) return PERMISSION_DENIED; 179 *mute = af->streamMute(stream); 180 return NO_ERROR; 181} 182 183status_t AudioSystem::setMode(audio_mode_t mode) 184{ 185 if (uint32_t(mode) >= AUDIO_MODE_CNT) return BAD_VALUE; 186 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 187 if (af == 0) return PERMISSION_DENIED; 188 return af->setMode(mode); 189} 190 191status_t AudioSystem::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs) 192{ 193 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 194 if (af == 0) return PERMISSION_DENIED; 195 return af->setParameters(ioHandle, keyValuePairs); 196} 197 198String8 AudioSystem::getParameters(audio_io_handle_t ioHandle, const String8& keys) 199{ 200 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 201 String8 result = String8(""); 202 if (af == 0) return result; 203 204 result = af->getParameters(ioHandle, keys); 205 return result; 206} 207 208status_t AudioSystem::setParameters(const String8& keyValuePairs) 209{ 210 return setParameters(AUDIO_IO_HANDLE_NONE, keyValuePairs); 211} 212 213String8 AudioSystem::getParameters(const String8& keys) 214{ 215 return getParameters(AUDIO_IO_HANDLE_NONE, keys); 216} 217 218// convert volume steps to natural log scale 219 220// change this value to change volume scaling 221static const float dBPerStep = 0.5f; 222// shouldn't need to touch these 223static const float dBConvert = -dBPerStep * 2.302585093f / 20.0f; 224static const float dBConvertInverse = 1.0f / dBConvert; 225 226float AudioSystem::linearToLog(int volume) 227{ 228 // float v = volume ? exp(float(100 - volume) * dBConvert) : 0; 229 // ALOGD("linearToLog(%d)=%f", volume, v); 230 // return v; 231 return volume ? exp(float(100 - volume) * dBConvert) : 0; 232} 233 234int AudioSystem::logToLinear(float volume) 235{ 236 // int v = volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 237 // ALOGD("logTolinear(%d)=%f", v, volume); 238 // return v; 239 return volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 240} 241 242status_t AudioSystem::getOutputSamplingRate(uint32_t* samplingRate, audio_stream_type_t streamType) 243{ 244 audio_io_handle_t output; 245 246 if (streamType == AUDIO_STREAM_DEFAULT) { 247 streamType = AUDIO_STREAM_MUSIC; 248 } 249 250 output = getOutput(streamType); 251 if (output == 0) { 252 return PERMISSION_DENIED; 253 } 254 255 return getSamplingRate(output, samplingRate); 256} 257 258status_t AudioSystem::getSamplingRate(audio_io_handle_t output, 259 uint32_t* samplingRate) 260{ 261 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 262 if (af == 0) return PERMISSION_DENIED; 263 264 Mutex::Autolock _l(gLockCache); 265 266 OutputDescriptor *outputDesc = AudioSystem::gOutputs.valueFor(output); 267 if (outputDesc == NULL) { 268 ALOGV("getOutputSamplingRate() no output descriptor for output %d in gOutputs", output); 269 gLockCache.unlock(); 270 *samplingRate = af->sampleRate(output); 271 gLockCache.lock(); 272 } else { 273 ALOGV("getOutputSamplingRate() reading from output desc"); 274 *samplingRate = outputDesc->samplingRate; 275 } 276 if (*samplingRate == 0) { 277 ALOGE("AudioSystem::getSamplingRate failed for output %d", output); 278 return BAD_VALUE; 279 } 280 281 ALOGV("getSamplingRate() output %d, sampling rate %u", output, *samplingRate); 282 283 return NO_ERROR; 284} 285 286status_t AudioSystem::getOutputFrameCount(size_t* frameCount, audio_stream_type_t streamType) 287{ 288 audio_io_handle_t output; 289 290 if (streamType == AUDIO_STREAM_DEFAULT) { 291 streamType = AUDIO_STREAM_MUSIC; 292 } 293 294 output = getOutput(streamType); 295 if (output == AUDIO_IO_HANDLE_NONE) { 296 return PERMISSION_DENIED; 297 } 298 299 return getFrameCount(output, frameCount); 300} 301 302status_t AudioSystem::getFrameCount(audio_io_handle_t output, 303 size_t* frameCount) 304{ 305 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 306 if (af == 0) return PERMISSION_DENIED; 307 308 Mutex::Autolock _l(gLockCache); 309 310 OutputDescriptor *outputDesc = AudioSystem::gOutputs.valueFor(output); 311 if (outputDesc == NULL) { 312 gLockCache.unlock(); 313 *frameCount = af->frameCount(output); 314 gLockCache.lock(); 315 } else { 316 *frameCount = outputDesc->frameCount; 317 } 318 if (*frameCount == 0) { 319 ALOGE("AudioSystem::getFrameCount failed for output %d", output); 320 return BAD_VALUE; 321 } 322 323 ALOGV("getFrameCount() output %d, frameCount %zu", output, *frameCount); 324 325 return NO_ERROR; 326} 327 328status_t AudioSystem::getOutputLatency(uint32_t* latency, audio_stream_type_t streamType) 329{ 330 audio_io_handle_t output; 331 332 if (streamType == AUDIO_STREAM_DEFAULT) { 333 streamType = AUDIO_STREAM_MUSIC; 334 } 335 336 output = getOutput(streamType); 337 if (output == AUDIO_IO_HANDLE_NONE) { 338 return PERMISSION_DENIED; 339 } 340 341 return getLatency(output, latency); 342} 343 344status_t AudioSystem::getLatency(audio_io_handle_t output, 345 uint32_t* latency) 346{ 347 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 348 if (af == 0) return PERMISSION_DENIED; 349 350 Mutex::Autolock _l(gLockCache); 351 352 OutputDescriptor *outputDesc = AudioSystem::gOutputs.valueFor(output); 353 if (outputDesc == NULL) { 354 gLockCache.unlock(); 355 *latency = af->latency(output); 356 gLockCache.lock(); 357 } else { 358 *latency = outputDesc->latency; 359 } 360 361 ALOGV("getLatency() output %d, latency %d", output, *latency); 362 363 return NO_ERROR; 364} 365 366status_t AudioSystem::getInputBufferSize(uint32_t sampleRate, audio_format_t format, 367 audio_channel_mask_t channelMask, size_t* buffSize) 368{ 369 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 370 if (af == 0) { 371 return PERMISSION_DENIED; 372 } 373 Mutex::Autolock _l(gLockCache); 374 // Do we have a stale gInBufferSize or are we requesting the input buffer size for new values 375 size_t inBuffSize = gInBuffSize; 376 if ((inBuffSize == 0) || (sampleRate != gPrevInSamplingRate) || (format != gPrevInFormat) 377 || (channelMask != gPrevInChannelMask)) { 378 gLockCache.unlock(); 379 inBuffSize = af->getInputBufferSize(sampleRate, format, channelMask); 380 gLockCache.lock(); 381 if (inBuffSize == 0) { 382 ALOGE("AudioSystem::getInputBufferSize failed sampleRate %d format %#x channelMask %x", 383 sampleRate, format, channelMask); 384 return BAD_VALUE; 385 } 386 // A benign race is possible here: we could overwrite a fresher cache entry 387 // save the request params 388 gPrevInSamplingRate = sampleRate; 389 gPrevInFormat = format; 390 gPrevInChannelMask = channelMask; 391 392 gInBuffSize = inBuffSize; 393 } 394 *buffSize = inBuffSize; 395 396 return NO_ERROR; 397} 398 399status_t AudioSystem::setVoiceVolume(float value) 400{ 401 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 402 if (af == 0) return PERMISSION_DENIED; 403 return af->setVoiceVolume(value); 404} 405 406status_t AudioSystem::getRenderPosition(audio_io_handle_t output, uint32_t *halFrames, 407 uint32_t *dspFrames) 408{ 409 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 410 if (af == 0) return PERMISSION_DENIED; 411 412 return af->getRenderPosition(halFrames, dspFrames, output); 413} 414 415uint32_t AudioSystem::getInputFramesLost(audio_io_handle_t ioHandle) 416{ 417 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 418 uint32_t result = 0; 419 if (af == 0) return result; 420 if (ioHandle == AUDIO_IO_HANDLE_NONE) return result; 421 422 result = af->getInputFramesLost(ioHandle); 423 return result; 424} 425 426audio_unique_id_t AudioSystem::newAudioUniqueId() 427{ 428 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 429 if (af == 0) return AUDIO_UNIQUE_ID_ALLOCATE; 430 return af->newAudioUniqueId(); 431} 432 433void AudioSystem::acquireAudioSessionId(int audioSession, pid_t pid) 434{ 435 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 436 if (af != 0) { 437 af->acquireAudioSessionId(audioSession, pid); 438 } 439} 440 441void AudioSystem::releaseAudioSessionId(int audioSession, pid_t pid) 442{ 443 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 444 if (af != 0) { 445 af->releaseAudioSessionId(audioSession, pid); 446 } 447} 448 449audio_hw_sync_t AudioSystem::getAudioHwSyncForSession(audio_session_t sessionId) 450{ 451 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 452 if (af == 0) return AUDIO_HW_SYNC_INVALID; 453 return af->getAudioHwSyncForSession(sessionId); 454} 455 456// --------------------------------------------------------------------------- 457 458void AudioSystem::AudioFlingerClient::binderDied(const wp<IBinder>& who __unused) 459{ 460 audio_error_callback cb = NULL; 461 { 462 Mutex::Autolock _l(AudioSystem::gLock); 463 AudioSystem::gAudioFlinger.clear(); 464 cb = gAudioErrorCallback; 465 } 466 467 { 468 // clear output handles and stream to output map caches 469 Mutex::Autolock _l(gLockCache); 470 AudioSystem::gOutputs.clear(); 471 } 472 473 if (cb) { 474 cb(DEAD_OBJECT); 475 } 476 ALOGW("AudioFlinger server died!"); 477} 478 479void AudioSystem::AudioFlingerClient::ioConfigChanged(int event, audio_io_handle_t ioHandle, 480 const void *param2) { 481 ALOGV("ioConfigChanged() event %d", event); 482 const OutputDescriptor *desc; 483 audio_stream_type_t stream; 484 485 if (ioHandle == AUDIO_IO_HANDLE_NONE) return; 486 487 Mutex::Autolock _l(AudioSystem::gLockCache); 488 489 switch (event) { 490 case STREAM_CONFIG_CHANGED: 491 break; 492 case OUTPUT_OPENED: { 493 if (gOutputs.indexOfKey(ioHandle) >= 0) { 494 ALOGV("ioConfigChanged() opening already existing output! %d", ioHandle); 495 break; 496 } 497 if (param2 == NULL) break; 498 desc = (const OutputDescriptor *)param2; 499 500 OutputDescriptor *outputDesc = new OutputDescriptor(*desc); 501 gOutputs.add(ioHandle, outputDesc); 502 ALOGV("ioConfigChanged() new output samplingRate %u, format %#x channel mask %#x frameCount %zu " 503 "latency %d", 504 outputDesc->samplingRate, outputDesc->format, outputDesc->channelMask, 505 outputDesc->frameCount, outputDesc->latency); 506 } break; 507 case OUTPUT_CLOSED: { 508 if (gOutputs.indexOfKey(ioHandle) < 0) { 509 ALOGW("ioConfigChanged() closing unknown output! %d", ioHandle); 510 break; 511 } 512 ALOGV("ioConfigChanged() output %d closed", ioHandle); 513 514 gOutputs.removeItem(ioHandle); 515 } break; 516 517 case OUTPUT_CONFIG_CHANGED: { 518 int index = gOutputs.indexOfKey(ioHandle); 519 if (index < 0) { 520 ALOGW("ioConfigChanged() modifying unknown output! %d", ioHandle); 521 break; 522 } 523 if (param2 == NULL) break; 524 desc = (const OutputDescriptor *)param2; 525 526 ALOGV("ioConfigChanged() new config for output %d samplingRate %u, format %#x channel mask %#x " 527 "frameCount %zu latency %d", 528 ioHandle, desc->samplingRate, desc->format, 529 desc->channelMask, desc->frameCount, desc->latency); 530 OutputDescriptor *outputDesc = gOutputs.valueAt(index); 531 delete outputDesc; 532 outputDesc = new OutputDescriptor(*desc); 533 gOutputs.replaceValueFor(ioHandle, outputDesc); 534 } break; 535 case INPUT_OPENED: 536 case INPUT_CLOSED: 537 case INPUT_CONFIG_CHANGED: 538 break; 539 540 } 541} 542 543void AudioSystem::setErrorCallback(audio_error_callback cb) 544{ 545 Mutex::Autolock _l(gLock); 546 gAudioErrorCallback = cb; 547} 548 549// client singleton for AudioPolicyService binder interface 550// protected by gLockAPS 551sp<IAudioPolicyService> AudioSystem::gAudioPolicyService; 552sp<AudioSystem::AudioPolicyServiceClient> AudioSystem::gAudioPolicyServiceClient; 553 554 555// establish binder interface to AudioPolicy service 556const sp<IAudioPolicyService> AudioSystem::get_audio_policy_service() 557{ 558 sp<IAudioPolicyService> ap; 559 sp<AudioPolicyServiceClient> apc; 560 { 561 Mutex::Autolock _l(gLockAPS); 562 if (gAudioPolicyService == 0) { 563 sp<IServiceManager> sm = defaultServiceManager(); 564 sp<IBinder> binder; 565 do { 566 binder = sm->getService(String16("media.audio_policy")); 567 if (binder != 0) 568 break; 569 ALOGW("AudioPolicyService not published, waiting..."); 570 usleep(500000); // 0.5 s 571 } while (true); 572 if (gAudioPolicyServiceClient == NULL) { 573 gAudioPolicyServiceClient = new AudioPolicyServiceClient(); 574 } 575 binder->linkToDeath(gAudioPolicyServiceClient); 576 gAudioPolicyService = interface_cast<IAudioPolicyService>(binder); 577 LOG_ALWAYS_FATAL_IF(gAudioPolicyService == 0); 578 apc = gAudioPolicyServiceClient; 579 } 580 ap = gAudioPolicyService; 581 } 582 if (apc != 0) { 583 ap->registerClient(apc); 584 } 585 586 return ap; 587} 588 589// --------------------------------------------------------------------------- 590 591status_t AudioSystem::setDeviceConnectionState(audio_devices_t device, 592 audio_policy_dev_state_t state, 593 const char *device_address) 594{ 595 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 596 const char *address = ""; 597 598 if (aps == 0) return PERMISSION_DENIED; 599 600 if (device_address != NULL) { 601 address = device_address; 602 } 603 604 return aps->setDeviceConnectionState(device, state, address); 605} 606 607audio_policy_dev_state_t AudioSystem::getDeviceConnectionState(audio_devices_t device, 608 const char *device_address) 609{ 610 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 611 if (aps == 0) return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE; 612 613 return aps->getDeviceConnectionState(device, device_address); 614} 615 616status_t AudioSystem::setPhoneState(audio_mode_t state) 617{ 618 if (uint32_t(state) >= AUDIO_MODE_CNT) return BAD_VALUE; 619 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 620 if (aps == 0) return PERMISSION_DENIED; 621 622 return aps->setPhoneState(state); 623} 624 625status_t AudioSystem::setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) 626{ 627 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 628 if (aps == 0) return PERMISSION_DENIED; 629 return aps->setForceUse(usage, config); 630} 631 632audio_policy_forced_cfg_t AudioSystem::getForceUse(audio_policy_force_use_t usage) 633{ 634 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 635 if (aps == 0) return AUDIO_POLICY_FORCE_NONE; 636 return aps->getForceUse(usage); 637} 638 639 640audio_io_handle_t AudioSystem::getOutput(audio_stream_type_t stream, 641 uint32_t samplingRate, 642 audio_format_t format, 643 audio_channel_mask_t channelMask, 644 audio_output_flags_t flags, 645 const audio_offload_info_t *offloadInfo) 646{ 647 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 648 if (aps == 0) return 0; 649 return aps->getOutput(stream, samplingRate, format, channelMask, flags, offloadInfo); 650} 651 652status_t AudioSystem::getOutputForAttr(const audio_attributes_t *attr, 653 audio_io_handle_t *output, 654 audio_session_t session, 655 audio_stream_type_t *stream, 656 uint32_t samplingRate, 657 audio_format_t format, 658 audio_channel_mask_t channelMask, 659 audio_output_flags_t flags, 660 const audio_offload_info_t *offloadInfo) 661{ 662 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 663 if (aps == 0) return NO_INIT; 664 return aps->getOutputForAttr(attr, output, session, stream, 665 samplingRate, format, channelMask, 666 flags, offloadInfo); 667} 668 669status_t AudioSystem::startOutput(audio_io_handle_t output, 670 audio_stream_type_t stream, 671 audio_session_t session) 672{ 673 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 674 if (aps == 0) return PERMISSION_DENIED; 675 return aps->startOutput(output, stream, session); 676} 677 678status_t AudioSystem::stopOutput(audio_io_handle_t output, 679 audio_stream_type_t stream, 680 audio_session_t session) 681{ 682 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 683 if (aps == 0) return PERMISSION_DENIED; 684 return aps->stopOutput(output, stream, session); 685} 686 687void AudioSystem::releaseOutput(audio_io_handle_t output, 688 audio_stream_type_t stream, 689 audio_session_t session) 690{ 691 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 692 if (aps == 0) return; 693 aps->releaseOutput(output, stream, session); 694} 695 696status_t AudioSystem::getInputForAttr(const audio_attributes_t *attr, 697 audio_io_handle_t *input, 698 audio_session_t session, 699 uint32_t samplingRate, 700 audio_format_t format, 701 audio_channel_mask_t channelMask, 702 audio_input_flags_t flags) 703{ 704 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 705 if (aps == 0) return NO_INIT; 706 return aps->getInputForAttr(attr, input, session, samplingRate, format, channelMask, flags); 707} 708 709status_t AudioSystem::startInput(audio_io_handle_t input, 710 audio_session_t session) 711{ 712 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 713 if (aps == 0) return PERMISSION_DENIED; 714 return aps->startInput(input, session); 715} 716 717status_t AudioSystem::stopInput(audio_io_handle_t input, 718 audio_session_t session) 719{ 720 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 721 if (aps == 0) return PERMISSION_DENIED; 722 return aps->stopInput(input, session); 723} 724 725void AudioSystem::releaseInput(audio_io_handle_t input, 726 audio_session_t session) 727{ 728 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 729 if (aps == 0) return; 730 aps->releaseInput(input, session); 731} 732 733status_t AudioSystem::initStreamVolume(audio_stream_type_t stream, 734 int indexMin, 735 int indexMax) 736{ 737 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 738 if (aps == 0) return PERMISSION_DENIED; 739 return aps->initStreamVolume(stream, indexMin, indexMax); 740} 741 742status_t AudioSystem::setStreamVolumeIndex(audio_stream_type_t stream, 743 int index, 744 audio_devices_t device) 745{ 746 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 747 if (aps == 0) return PERMISSION_DENIED; 748 return aps->setStreamVolumeIndex(stream, index, device); 749} 750 751status_t AudioSystem::getStreamVolumeIndex(audio_stream_type_t stream, 752 int *index, 753 audio_devices_t device) 754{ 755 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 756 if (aps == 0) return PERMISSION_DENIED; 757 return aps->getStreamVolumeIndex(stream, index, device); 758} 759 760uint32_t AudioSystem::getStrategyForStream(audio_stream_type_t stream) 761{ 762 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 763 if (aps == 0) return 0; 764 return aps->getStrategyForStream(stream); 765} 766 767audio_devices_t AudioSystem::getDevicesForStream(audio_stream_type_t stream) 768{ 769 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 770 if (aps == 0) return AUDIO_DEVICE_NONE; 771 return aps->getDevicesForStream(stream); 772} 773 774audio_io_handle_t AudioSystem::getOutputForEffect(const effect_descriptor_t *desc) 775{ 776 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 777 // FIXME change return type to status_t, and return PERMISSION_DENIED here 778 if (aps == 0) return AUDIO_IO_HANDLE_NONE; 779 return aps->getOutputForEffect(desc); 780} 781 782status_t AudioSystem::registerEffect(const effect_descriptor_t *desc, 783 audio_io_handle_t io, 784 uint32_t strategy, 785 int session, 786 int id) 787{ 788 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 789 if (aps == 0) return PERMISSION_DENIED; 790 return aps->registerEffect(desc, io, strategy, session, id); 791} 792 793status_t AudioSystem::unregisterEffect(int id) 794{ 795 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 796 if (aps == 0) return PERMISSION_DENIED; 797 return aps->unregisterEffect(id); 798} 799 800status_t AudioSystem::setEffectEnabled(int id, bool enabled) 801{ 802 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 803 if (aps == 0) return PERMISSION_DENIED; 804 return aps->setEffectEnabled(id, enabled); 805} 806 807status_t AudioSystem::isStreamActive(audio_stream_type_t stream, bool* state, uint32_t inPastMs) 808{ 809 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 810 if (aps == 0) return PERMISSION_DENIED; 811 if (state == NULL) return BAD_VALUE; 812 *state = aps->isStreamActive(stream, inPastMs); 813 return NO_ERROR; 814} 815 816status_t AudioSystem::isStreamActiveRemotely(audio_stream_type_t stream, bool* state, 817 uint32_t inPastMs) 818{ 819 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 820 if (aps == 0) return PERMISSION_DENIED; 821 if (state == NULL) return BAD_VALUE; 822 *state = aps->isStreamActiveRemotely(stream, inPastMs); 823 return NO_ERROR; 824} 825 826status_t AudioSystem::isSourceActive(audio_source_t stream, bool* state) 827{ 828 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 829 if (aps == 0) return PERMISSION_DENIED; 830 if (state == NULL) return BAD_VALUE; 831 *state = aps->isSourceActive(stream); 832 return NO_ERROR; 833} 834 835uint32_t AudioSystem::getPrimaryOutputSamplingRate() 836{ 837 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 838 if (af == 0) return 0; 839 return af->getPrimaryOutputSamplingRate(); 840} 841 842size_t AudioSystem::getPrimaryOutputFrameCount() 843{ 844 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 845 if (af == 0) return 0; 846 return af->getPrimaryOutputFrameCount(); 847} 848 849status_t AudioSystem::setLowRamDevice(bool isLowRamDevice) 850{ 851 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 852 if (af == 0) return PERMISSION_DENIED; 853 return af->setLowRamDevice(isLowRamDevice); 854} 855 856void AudioSystem::clearAudioConfigCache() 857{ 858 // called by restoreTrack_l(), which needs new IAudioFlinger and IAudioPolicyService instances 859 ALOGV("clearAudioConfigCache()"); 860 { 861 Mutex::Autolock _l(gLockCache); 862 gOutputs.clear(); 863 } 864 { 865 Mutex::Autolock _l(gLock); 866 gAudioFlinger.clear(); 867 } 868 { 869 Mutex::Autolock _l(gLockAPS); 870 gAudioPolicyService.clear(); 871 } 872 // Do not clear gAudioPortCallback 873} 874 875bool AudioSystem::isOffloadSupported(const audio_offload_info_t& info) 876{ 877 ALOGV("isOffloadSupported()"); 878 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 879 if (aps == 0) return false; 880 return aps->isOffloadSupported(info); 881} 882 883status_t AudioSystem::listAudioPorts(audio_port_role_t role, 884 audio_port_type_t type, 885 unsigned int *num_ports, 886 struct audio_port *ports, 887 unsigned int *generation) 888{ 889 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 890 if (aps == 0) return PERMISSION_DENIED; 891 return aps->listAudioPorts(role, type, num_ports, ports, generation); 892} 893 894status_t AudioSystem::getAudioPort(struct audio_port *port) 895{ 896 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 897 if (aps == 0) return PERMISSION_DENIED; 898 return aps->getAudioPort(port); 899} 900 901status_t AudioSystem::createAudioPatch(const struct audio_patch *patch, 902 audio_patch_handle_t *handle) 903{ 904 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 905 if (aps == 0) return PERMISSION_DENIED; 906 return aps->createAudioPatch(patch, handle); 907} 908 909status_t AudioSystem::releaseAudioPatch(audio_patch_handle_t handle) 910{ 911 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 912 if (aps == 0) return PERMISSION_DENIED; 913 return aps->releaseAudioPatch(handle); 914} 915 916status_t AudioSystem::listAudioPatches(unsigned int *num_patches, 917 struct audio_patch *patches, 918 unsigned int *generation) 919{ 920 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 921 if (aps == 0) return PERMISSION_DENIED; 922 return aps->listAudioPatches(num_patches, patches, generation); 923} 924 925status_t AudioSystem::setAudioPortConfig(const struct audio_port_config *config) 926{ 927 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 928 if (aps == 0) return PERMISSION_DENIED; 929 return aps->setAudioPortConfig(config); 930} 931 932void AudioSystem::setAudioPortCallback(sp<AudioPortCallback> callBack) 933{ 934 Mutex::Autolock _l(gLockAPC); 935 gAudioPortCallback = callBack; 936} 937 938status_t AudioSystem::acquireSoundTriggerSession(audio_session_t *session, 939 audio_io_handle_t *ioHandle, 940 audio_devices_t *device) 941{ 942 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 943 if (aps == 0) return PERMISSION_DENIED; 944 return aps->acquireSoundTriggerSession(session, ioHandle, device); 945} 946 947status_t AudioSystem::releaseSoundTriggerSession(audio_session_t session) 948{ 949 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 950 if (aps == 0) return PERMISSION_DENIED; 951 return aps->releaseSoundTriggerSession(session); 952} 953 954audio_mode_t AudioSystem::getPhoneState() 955{ 956 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 957 if (aps == 0) return AUDIO_MODE_INVALID; 958 return aps->getPhoneState(); 959} 960 961status_t AudioSystem::registerPolicyMixes(Vector<AudioMix> mixes, bool registration) 962{ 963 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 964 if (aps == 0) return PERMISSION_DENIED; 965 return aps->registerPolicyMixes(mixes, registration); 966} 967 968// --------------------------------------------------------------------------- 969 970void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who __unused) 971{ 972 { 973 Mutex::Autolock _l(gLockAPC); 974 if (gAudioPortCallback != 0) { 975 gAudioPortCallback->onServiceDied(); 976 } 977 } 978 { 979 Mutex::Autolock _l(gLockAPS); 980 AudioSystem::gAudioPolicyService.clear(); 981 } 982 983 ALOGW("AudioPolicyService server died!"); 984} 985 986void AudioSystem::AudioPolicyServiceClient::onAudioPortListUpdate() 987{ 988 Mutex::Autolock _l(gLockAPC); 989 if (gAudioPortCallback != 0) { 990 gAudioPortCallback->onAudioPortListUpdate(); 991 } 992} 993 994void AudioSystem::AudioPolicyServiceClient::onAudioPatchListUpdate() 995{ 996 Mutex::Autolock _l(gLockAPC); 997 if (gAudioPortCallback != 0) { 998 gAudioPortCallback->onAudioPatchListUpdate(); 999 } 1000} 1001 1002}; // namespace android 1003