AudioSystem.cpp revision a9c322e398a1f5fdcace3b8b73967f010b1c31ca
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// ---------------------------------------------------------------------------- 27// the sim build doesn't have gettid 28 29#ifndef HAVE_GETTID 30# define gettid getpid 31#endif 32 33// ---------------------------------------------------------------------------- 34 35namespace android { 36 37// client singleton for AudioFlinger binder interface 38Mutex AudioSystem::gLock; 39sp<IAudioFlinger> AudioSystem::gAudioFlinger; 40sp<AudioSystem::AudioFlingerClient> AudioSystem::gAudioFlingerClient; 41audio_error_callback AudioSystem::gAudioErrorCallback = NULL; 42// Cached values 43DefaultKeyedVector<int, audio_io_handle_t> AudioSystem::gStreamOutputMap(0); 44DefaultKeyedVector<audio_io_handle_t, AudioSystem::OutputDescriptor *> AudioSystem::gOutputs(0); 45 46// Cached values for recording queries 47uint32_t AudioSystem::gPrevInSamplingRate = 16000; 48int AudioSystem::gPrevInFormat = AudioSystem::PCM_16_BIT; 49int AudioSystem::gPrevInChannelCount = 1; 50size_t AudioSystem::gInBuffSize = 0; 51 52 53// establish binder interface to AudioFlinger service 54const sp<IAudioFlinger>& AudioSystem::get_audio_flinger() 55{ 56 Mutex::Autolock _l(gLock); 57 if (gAudioFlinger.get() == 0) { 58 sp<IServiceManager> sm = defaultServiceManager(); 59 sp<IBinder> binder; 60 do { 61 binder = sm->getService(String16("media.audio_flinger")); 62 if (binder != 0) 63 break; 64 LOGW("AudioFlinger not published, waiting..."); 65 usleep(500000); // 0.5 s 66 } while(true); 67 if (gAudioFlingerClient == NULL) { 68 gAudioFlingerClient = new AudioFlingerClient(); 69 } else { 70 if (gAudioErrorCallback) { 71 gAudioErrorCallback(NO_ERROR); 72 } 73 } 74 binder->linkToDeath(gAudioFlingerClient); 75 gAudioFlinger = interface_cast<IAudioFlinger>(binder); 76 gAudioFlinger->registerClient(gAudioFlingerClient); 77 } 78 LOGE_IF(gAudioFlinger==0, "no AudioFlinger!?"); 79 80 return gAudioFlinger; 81} 82 83status_t AudioSystem::muteMicrophone(bool state) { 84 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 85 if (af == 0) return PERMISSION_DENIED; 86 return af->setMicMute(state); 87} 88 89status_t AudioSystem::isMicrophoneMuted(bool* state) { 90 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 91 if (af == 0) return PERMISSION_DENIED; 92 *state = af->getMicMute(); 93 return NO_ERROR; 94} 95 96status_t AudioSystem::setMasterVolume(float value) 97{ 98 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 99 if (af == 0) return PERMISSION_DENIED; 100 af->setMasterVolume(value); 101 return NO_ERROR; 102} 103 104status_t AudioSystem::setMasterMute(bool mute) 105{ 106 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 107 if (af == 0) return PERMISSION_DENIED; 108 af->setMasterMute(mute); 109 return NO_ERROR; 110} 111 112status_t AudioSystem::getMasterVolume(float* volume) 113{ 114 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 115 if (af == 0) return PERMISSION_DENIED; 116 *volume = af->masterVolume(); 117 return NO_ERROR; 118} 119 120status_t AudioSystem::getMasterMute(bool* mute) 121{ 122 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 123 if (af == 0) return PERMISSION_DENIED; 124 *mute = af->masterMute(); 125 return NO_ERROR; 126} 127 128status_t AudioSystem::setStreamVolume(int stream, float value, int output) 129{ 130 if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE; 131 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 132 if (af == 0) return PERMISSION_DENIED; 133 af->setStreamVolume(stream, value, output); 134 return NO_ERROR; 135} 136 137status_t AudioSystem::setStreamMute(int stream, bool mute) 138{ 139 if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE; 140 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 141 if (af == 0) return PERMISSION_DENIED; 142 af->setStreamMute(stream, mute); 143 return NO_ERROR; 144} 145 146status_t AudioSystem::getStreamVolume(int stream, float* volume, int output) 147{ 148 if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE; 149 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 150 if (af == 0) return PERMISSION_DENIED; 151 *volume = af->streamVolume(stream, output); 152 return NO_ERROR; 153} 154 155status_t AudioSystem::getStreamMute(int stream, bool* mute) 156{ 157 if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE; 158 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 159 if (af == 0) return PERMISSION_DENIED; 160 *mute = af->streamMute(stream); 161 return NO_ERROR; 162} 163 164status_t AudioSystem::setMode(int mode) 165{ 166 if (mode >= NUM_MODES) return BAD_VALUE; 167 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 168 if (af == 0) return PERMISSION_DENIED; 169 return af->setMode(mode); 170} 171 172 173status_t AudioSystem::isMusicActive(bool* state) { 174 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 175 if (af == 0) return PERMISSION_DENIED; 176 *state = af->isMusicActive(); 177 return NO_ERROR; 178} 179 180 181status_t AudioSystem::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs) { 182 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 183 if (af == 0) return PERMISSION_DENIED; 184 return af->setParameters(ioHandle, keyValuePairs); 185} 186 187String8 AudioSystem::getParameters(audio_io_handle_t ioHandle, const String8& keys) { 188 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 189 String8 result = String8(""); 190 if (af == 0) return result; 191 192 result = af->getParameters(ioHandle, keys); 193 return result; 194} 195 196// convert volume steps to natural log scale 197 198// change this value to change volume scaling 199static const float dBPerStep = 0.5f; 200// shouldn't need to touch these 201static const float dBConvert = -dBPerStep * 2.302585093f / 20.0f; 202static const float dBConvertInverse = 1.0f / dBConvert; 203 204float AudioSystem::linearToLog(int volume) 205{ 206 // float v = volume ? exp(float(100 - volume) * dBConvert) : 0; 207 // LOGD("linearToLog(%d)=%f", volume, v); 208 // return v; 209 return volume ? exp(float(100 - volume) * dBConvert) : 0; 210} 211 212int AudioSystem::logToLinear(float volume) 213{ 214 // int v = volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 215 // LOGD("logTolinear(%d)=%f", v, volume); 216 // return v; 217 return volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; 218} 219 220status_t AudioSystem::getOutputSamplingRate(int* samplingRate, int streamType) 221{ 222 OutputDescriptor *outputDesc; 223 audio_io_handle_t output; 224 225 if (streamType == DEFAULT) { 226 streamType = MUSIC; 227 } 228 229 output = getOutput((stream_type)streamType); 230 if (output == 0) { 231 return PERMISSION_DENIED; 232 } 233 234 gLock.lock(); 235 outputDesc = AudioSystem::gOutputs.valueFor(output); 236 if (outputDesc == 0) { 237 LOGV("getOutputSamplingRate() no output descriptor for output %d in gOutputs", output); 238 gLock.unlock(); 239 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 240 if (af == 0) return PERMISSION_DENIED; 241 *samplingRate = af->sampleRate(output); 242 } else { 243 LOGV("getOutputSamplingRate() reading from output desc"); 244 *samplingRate = outputDesc->samplingRate; 245 gLock.unlock(); 246 } 247 248 LOGV("getOutputSamplingRate() streamType %d, output %d, sampling rate %d", streamType, output, *samplingRate); 249 250 return NO_ERROR; 251} 252 253status_t AudioSystem::getOutputFrameCount(int* frameCount, int streamType) 254{ 255 OutputDescriptor *outputDesc; 256 audio_io_handle_t output; 257 258 if (streamType == DEFAULT) { 259 streamType = MUSIC; 260 } 261 262 output = getOutput((stream_type)streamType); 263 if (output == 0) { 264 return PERMISSION_DENIED; 265 } 266 267 gLock.lock(); 268 outputDesc = AudioSystem::gOutputs.valueFor(output); 269 if (outputDesc == 0) { 270 gLock.unlock(); 271 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 272 if (af == 0) return PERMISSION_DENIED; 273 *frameCount = af->frameCount(output); 274 } else { 275 *frameCount = outputDesc->frameCount; 276 gLock.unlock(); 277 } 278 279 LOGV("getOutputFrameCount() streamType %d, output %d, frameCount %d", streamType, output, *frameCount); 280 281 return NO_ERROR; 282} 283 284status_t AudioSystem::getOutputLatency(uint32_t* latency, int streamType) 285{ 286 OutputDescriptor *outputDesc; 287 audio_io_handle_t output; 288 289 if (streamType == DEFAULT) { 290 streamType = MUSIC; 291 } 292 293 output = getOutput((stream_type)streamType); 294 if (output == 0) { 295 return PERMISSION_DENIED; 296 } 297 298 gLock.lock(); 299 outputDesc = AudioSystem::gOutputs.valueFor(output); 300 if (outputDesc == 0) { 301 gLock.unlock(); 302 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 303 if (af == 0) return PERMISSION_DENIED; 304 *latency = af->latency(output); 305 } else { 306 *latency = outputDesc->latency; 307 gLock.unlock(); 308 } 309 310 LOGV("getOutputLatency() streamType %d, output %d, latency %d", streamType, output, *latency); 311 312 return NO_ERROR; 313} 314 315status_t AudioSystem::getInputBufferSize(uint32_t sampleRate, int format, int channelCount, 316 size_t* buffSize) 317{ 318 // Do we have a stale gInBufferSize or are we requesting the input buffer size for new values 319 if ((gInBuffSize == 0) || (sampleRate != gPrevInSamplingRate) || (format != gPrevInFormat) 320 || (channelCount != gPrevInChannelCount)) { 321 // save the request params 322 gPrevInSamplingRate = sampleRate; 323 gPrevInFormat = format; 324 gPrevInChannelCount = channelCount; 325 326 gInBuffSize = 0; 327 const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); 328 if (af == 0) { 329 return PERMISSION_DENIED; 330 } 331 gInBuffSize = af->getInputBufferSize(sampleRate, format, channelCount); 332 } 333 *buffSize = gInBuffSize; 334 335 return NO_ERROR; 336} 337 338// --------------------------------------------------------------------------- 339 340void AudioSystem::AudioFlingerClient::binderDied(const wp<IBinder>& who) { 341 Mutex::Autolock _l(AudioSystem::gLock); 342 343 AudioSystem::gAudioFlinger.clear(); 344 345 if (gAudioErrorCallback) { 346 gAudioErrorCallback(DEAD_OBJECT); 347 } 348 LOGW("AudioFlinger server died!"); 349} 350 351void AudioSystem::AudioFlingerClient::ioConfigChanged(int event, int ioHandle, void *param2) { 352 LOGV("ioConfigChanged() event %d", event); 353 OutputDescriptor *desc; 354 uint32_t stream; 355 356 if (ioHandle == 0) return; 357 358 Mutex::Autolock _l(AudioSystem::gLock); 359 360 switch (event) { 361 case STREAM_CONFIG_CHANGED: 362 if (param2 == 0) break; 363 stream = *(uint32_t *)param2; 364 LOGV("ioConfigChanged() STREAM_CONFIG_CHANGED stream %d, output %d", stream, ioHandle); 365 if (gStreamOutputMap.indexOfKey(stream) >= 0) { 366 gStreamOutputMap.replaceValueFor(stream, ioHandle); 367 } 368 break; 369 case OUTPUT_OPENED: { 370 if (gOutputs.indexOfKey(ioHandle) >= 0) { 371 LOGV("ioConfigChanged() opening already existing output! %d", ioHandle); 372 break; 373 } 374 if (param2 == 0) break; 375 desc = (OutputDescriptor *)param2; 376 377 OutputDescriptor *outputDesc = new OutputDescriptor(*desc); 378 gOutputs.add(ioHandle, outputDesc); 379 LOGV("ioConfigChanged() new output samplingRate %d, format %d channels %d frameCount %d latency %d", 380 outputDesc->samplingRate, outputDesc->format, outputDesc->channels, outputDesc->frameCount, outputDesc->latency); 381 } break; 382 case OUTPUT_CLOSED: { 383 if (gOutputs.indexOfKey(ioHandle) < 0) { 384 LOGW("ioConfigChanged() closing unknow output! %d", ioHandle); 385 break; 386 } 387 LOGV("ioConfigChanged() output %d closed", ioHandle); 388 389 gOutputs.removeItem(ioHandle); 390 for (int i = gStreamOutputMap.size() - 1; i >= 0 ; i--) { 391 if (gStreamOutputMap.valueAt(i) == ioHandle) { 392 gStreamOutputMap.removeItemsAt(i); 393 } 394 } 395 } break; 396 397 case OUTPUT_CONFIG_CHANGED: { 398 int index = gOutputs.indexOfKey(ioHandle); 399 if (index < 0) { 400 LOGW("ioConfigChanged() modifying unknow output! %d", ioHandle); 401 break; 402 } 403 if (param2 == 0) break; 404 desc = (OutputDescriptor *)param2; 405 406 LOGV("ioConfigChanged() new config for output %d samplingRate %d, format %d channels %d frameCount %d latency %d", 407 ioHandle, desc->samplingRate, desc->format, 408 desc->channels, desc->frameCount, desc->latency); 409 OutputDescriptor *outputDesc = gOutputs.valueAt(index); 410 delete outputDesc; 411 outputDesc = new OutputDescriptor(*desc); 412 gOutputs.replaceValueFor(ioHandle, outputDesc); 413 } break; 414 case INPUT_OPENED: 415 case INPUT_CLOSED: 416 case INPUT_CONFIG_CHANGED: 417 break; 418 419 } 420} 421 422void AudioSystem::setErrorCallback(audio_error_callback cb) { 423 Mutex::Autolock _l(gLock); 424 gAudioErrorCallback = cb; 425} 426 427bool AudioSystem::routedToA2dpOutput(int streamType) { 428 switch(streamType) { 429 case MUSIC: 430 case VOICE_CALL: 431 case BLUETOOTH_SCO: 432 case SYSTEM: 433 return true; 434 default: 435 return false; 436 } 437} 438 439 440// client singleton for AudioPolicyService binder interface 441sp<IAudioPolicyService> AudioSystem::gAudioPolicyService; 442sp<AudioSystem::AudioPolicyServiceClient> AudioSystem::gAudioPolicyServiceClient; 443 444 445// establish binder interface to AudioFlinger service 446const sp<IAudioPolicyService>& AudioSystem::get_audio_policy_service() 447{ 448 gLock.lock(); 449 if (gAudioPolicyService.get() == 0) { 450 sp<IServiceManager> sm = defaultServiceManager(); 451 sp<IBinder> binder; 452 do { 453 binder = sm->getService(String16("media.audio_policy")); 454 if (binder != 0) 455 break; 456 LOGW("AudioPolicyService not published, waiting..."); 457 usleep(500000); // 0.5 s 458 } while(true); 459 if (gAudioPolicyServiceClient == NULL) { 460 gAudioPolicyServiceClient = new AudioPolicyServiceClient(); 461 } 462 binder->linkToDeath(gAudioPolicyServiceClient); 463 gAudioPolicyService = interface_cast<IAudioPolicyService>(binder); 464 gLock.unlock(); 465 } else { 466 gLock.unlock(); 467 } 468 return gAudioPolicyService; 469} 470 471status_t AudioSystem::setDeviceConnectionState(audio_devices device, 472 device_connection_state state, 473 const char *device_address) 474{ 475 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 476 if (aps == 0) return PERMISSION_DENIED; 477 478 return aps->setDeviceConnectionState(device, state, device_address); 479} 480 481AudioSystem::device_connection_state AudioSystem::getDeviceConnectionState(audio_devices device, 482 const char *device_address) 483{ 484 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 485 if (aps == 0) return DEVICE_STATE_UNAVAILABLE; 486 487 return aps->getDeviceConnectionState(device, device_address); 488} 489 490status_t AudioSystem::setPhoneState(int state) 491{ 492 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 493 if (aps == 0) return PERMISSION_DENIED; 494 495 return aps->setPhoneState(state); 496} 497 498status_t AudioSystem::setRingerMode(uint32_t mode, uint32_t mask) 499{ 500 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 501 if (aps == 0) return PERMISSION_DENIED; 502 return aps->setRingerMode(mode, mask); 503} 504 505status_t AudioSystem::setForceUse(force_use usage, forced_config config) 506{ 507 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 508 if (aps == 0) return PERMISSION_DENIED; 509 return aps->setForceUse(usage, config); 510} 511 512AudioSystem::forced_config AudioSystem::getForceUse(force_use usage) 513{ 514 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 515 if (aps == 0) return FORCE_NONE; 516 return aps->getForceUse(usage); 517} 518 519 520audio_io_handle_t AudioSystem::getOutput(stream_type stream, 521 uint32_t samplingRate, 522 uint32_t format, 523 uint32_t channels, 524 output_flags flags) 525{ 526 audio_io_handle_t output = 0; 527 if ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) == 0) { 528 Mutex::Autolock _l(gLock); 529 output = AudioSystem::gStreamOutputMap.valueFor(stream); 530 LOGV_IF((output != 0), "getOutput() read %d from cache for stream %d", output, stream); 531 } 532 if (output == 0) { 533 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 534 if (aps == 0) return 0; 535 output = aps->getOutput(stream, samplingRate, format, channels, flags); 536 if ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) == 0) { 537 Mutex::Autolock _l(gLock); 538 AudioSystem::gStreamOutputMap.add(stream, output); 539 } 540 } 541 return output; 542} 543 544status_t AudioSystem::startOutput(audio_io_handle_t output, AudioSystem::stream_type stream) 545{ 546 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 547 if (aps == 0) return PERMISSION_DENIED; 548 return aps->startOutput(output, stream); 549} 550 551status_t AudioSystem::stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream) 552{ 553 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 554 if (aps == 0) return PERMISSION_DENIED; 555 return aps->stopOutput(output, stream); 556} 557 558void AudioSystem::releaseOutput(audio_io_handle_t output) 559{ 560 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 561 if (aps == 0) return; 562 aps->releaseOutput(output); 563} 564 565audio_io_handle_t AudioSystem::getInput(int inputSource, 566 uint32_t samplingRate, 567 uint32_t format, 568 uint32_t channels, 569 audio_in_acoustics acoustics) 570{ 571 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 572 if (aps == 0) return 0; 573 return aps->getInput(inputSource, samplingRate, format, channels, acoustics); 574} 575 576status_t AudioSystem::startInput(audio_io_handle_t input) 577{ 578 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 579 if (aps == 0) return PERMISSION_DENIED; 580 return aps->startInput(input); 581} 582 583status_t AudioSystem::stopInput(audio_io_handle_t input) 584{ 585 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 586 if (aps == 0) return PERMISSION_DENIED; 587 return aps->stopInput(input); 588} 589 590void AudioSystem::releaseInput(audio_io_handle_t input) 591{ 592 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 593 if (aps == 0) return; 594 aps->releaseInput(input); 595} 596 597status_t AudioSystem::initStreamVolume(stream_type stream, 598 int indexMin, 599 int indexMax) 600{ 601 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 602 if (aps == 0) return PERMISSION_DENIED; 603 return aps->initStreamVolume(stream, indexMin, indexMax); 604} 605 606status_t AudioSystem::setStreamVolumeIndex(stream_type stream, int index) 607{ 608 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 609 if (aps == 0) return PERMISSION_DENIED; 610 return aps->setStreamVolumeIndex(stream, index); 611} 612 613status_t AudioSystem::getStreamVolumeIndex(stream_type stream, int *index) 614{ 615 const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service(); 616 if (aps == 0) return PERMISSION_DENIED; 617 return aps->getStreamVolumeIndex(stream, index); 618} 619 620// --------------------------------------------------------------------------- 621 622void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who) { 623 Mutex::Autolock _l(AudioSystem::gLock); 624 AudioSystem::gAudioPolicyService.clear(); 625 626 LOGW("AudioPolicyService server died!"); 627} 628 629// --------------------------------------------------------------------------- 630 631 632// use emulated popcount optimization 633// http://www.df.lth.se/~john_e/gems/gem002d.html 634uint32_t AudioSystem::popCount(uint32_t u) 635{ 636 u = ((u&0x55555555) + ((u>>1)&0x55555555)); 637 u = ((u&0x33333333) + ((u>>2)&0x33333333)); 638 u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f)); 639 u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff)); 640 u = ( u&0x0000ffff) + (u>>16); 641 return u; 642} 643 644bool AudioSystem::isOutputDevice(audio_devices device) 645{ 646 if ((popCount(device) == 1 ) && 647 ((device & ~AudioSystem::DEVICE_OUT_ALL) == 0)) { 648 return true; 649 } else { 650 return false; 651 } 652} 653 654bool AudioSystem::isInputDevice(audio_devices device) 655{ 656 if ((popCount(device) == 1 ) && 657 ((device & ~AudioSystem::DEVICE_IN_ALL) == 0)) { 658 return true; 659 } else { 660 return false; 661 } 662} 663 664bool AudioSystem::isA2dpDevice(audio_devices device) 665{ 666 if ((popCount(device) == 1 ) && 667 (device & (AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP | 668 AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | 669 AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER))) { 670 return true; 671 } else { 672 return false; 673 } 674} 675 676bool AudioSystem::isBluetoothScoDevice(audio_devices device) 677{ 678 if ((popCount(device) == 1 ) && 679 (device & (AudioSystem::DEVICE_OUT_BLUETOOTH_SCO | 680 AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET | 681 AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT))) { 682 return true; 683 } else { 684 return false; 685 } 686} 687 688bool AudioSystem::isLowVisibility(stream_type stream) 689{ 690 if (stream == AudioSystem::SYSTEM || stream == AudioSystem::NOTIFICATION) { 691 return true; 692 } else { 693 return false; 694 } 695} 696 697bool AudioSystem::isInputChannel(uint32_t channel) 698{ 699 if ((channel & ~AudioSystem::CHANNEL_IN_ALL) == 0) { 700 return true; 701 } else { 702 return false; 703 } 704} 705 706bool AudioSystem::isOutputChannel(uint32_t channel) 707{ 708 if ((channel & ~AudioSystem::CHANNEL_OUT_ALL) == 0) { 709 return true; 710 } else { 711 return false; 712 } 713} 714 715bool AudioSystem::isValidFormat(uint32_t format) 716{ 717 switch (format & MAIN_FORMAT_MASK) { 718 case PCM: 719 case MP3: 720 case AMR_NB: 721 case AMR_WB: 722 case AAC: 723 case HE_AAC_V1: 724 case HE_AAC_V2: 725 case VORBIS: 726 return true; 727 default: 728 return false; 729 } 730} 731 732bool AudioSystem::isLinearPCM(uint32_t format) 733{ 734 switch (format) { 735 case PCM_16_BIT: 736 case PCM_8_BIT: 737 return true; 738 default: 739 return false; 740 } 741} 742 743//------------------------- AudioParameter class implementation --------------- 744 745const char *AudioParameter::keyRouting = "routing"; 746const char *AudioParameter::keySamplingRate = "sampling_rate"; 747const char *AudioParameter::keyFormat = "format"; 748const char *AudioParameter::keyChannels = "channels"; 749const char *AudioParameter::keyFrameCount = "frame_count"; 750 751AudioParameter::AudioParameter(const String8& keyValuePairs) 752{ 753 char *str = new char[keyValuePairs.length()+1]; 754 mKeyValuePairs = keyValuePairs; 755 756 strcpy(str, keyValuePairs.string()); 757 char *pair = strtok(str, ";"); 758 while (pair != NULL) { 759 if (strlen(pair) != 0) { 760 size_t eqIdx = strcspn(pair, "="); 761 String8 key = String8(pair, eqIdx); 762 String8 value; 763 if (eqIdx == strlen(pair)) { 764 value = String8(""); 765 } else { 766 value = String8(pair + eqIdx + 1); 767 } 768 if (mParameters.indexOfKey(key) < 0) { 769 mParameters.add(key, value); 770 } else { 771 mParameters.replaceValueFor(key, value); 772 } 773 } else { 774 LOGV("AudioParameter() cstor empty key value pair"); 775 } 776 pair = strtok(NULL, ";"); 777 } 778 779 delete[] str; 780} 781 782AudioParameter::~AudioParameter() 783{ 784 mParameters.clear(); 785} 786 787String8 AudioParameter::toString() 788{ 789 String8 str = String8(""); 790 791 size_t size = mParameters.size(); 792 for (size_t i = 0; i < size; i++) { 793 str += mParameters.keyAt(i); 794 str += "="; 795 str += mParameters.valueAt(i); 796 if (i < (size - 1)) str += ";"; 797 } 798 return str; 799} 800 801status_t AudioParameter::add(const String8& key, const String8& value) 802{ 803 if (mParameters.indexOfKey(key) < 0) { 804 mParameters.add(key, value); 805 return NO_ERROR; 806 } else { 807 mParameters.replaceValueFor(key, value); 808 return ALREADY_EXISTS; 809 } 810} 811 812status_t AudioParameter::addInt(const String8& key, const int value) 813{ 814 char str[12]; 815 if (snprintf(str, 12, "%d", value) > 0) { 816 String8 str8 = String8(str); 817 return add(key, str8); 818 } else { 819 return BAD_VALUE; 820 } 821} 822 823status_t AudioParameter::addFloat(const String8& key, const float value) 824{ 825 char str[23]; 826 if (snprintf(str, 23, "%.10f", value) > 0) { 827 String8 str8 = String8(str); 828 return add(key, str8); 829 } else { 830 return BAD_VALUE; 831 } 832} 833 834status_t AudioParameter::remove(const String8& key) 835{ 836 if (mParameters.indexOfKey(key) >= 0) { 837 mParameters.removeItem(key); 838 return NO_ERROR; 839 } else { 840 return BAD_VALUE; 841 } 842} 843 844status_t AudioParameter::get(const String8& key, String8& value) 845{ 846 if (mParameters.indexOfKey(key) >= 0) { 847 value = mParameters.valueFor(key); 848 return NO_ERROR; 849 } else { 850 return BAD_VALUE; 851 } 852} 853 854status_t AudioParameter::getInt(const String8& key, int& value) 855{ 856 String8 str8; 857 status_t result = get(key, str8); 858 value = 0; 859 if (result == NO_ERROR) { 860 int val; 861 if (sscanf(str8.string(), "%d", &val) == 1) { 862 value = val; 863 } else { 864 result = INVALID_OPERATION; 865 } 866 } 867 return result; 868} 869 870status_t AudioParameter::getFloat(const String8& key, float& value) 871{ 872 String8 str8; 873 status_t result = get(key, str8); 874 value = 0; 875 if (result == NO_ERROR) { 876 float val; 877 if (sscanf(str8.string(), "%f", &val) == 1) { 878 value = val; 879 } else { 880 result = INVALID_OPERATION; 881 } 882 } 883 return result; 884} 885 886status_t AudioParameter::getAt(size_t index, String8& key, String8& value) 887{ 888 if (mParameters.size() > index) { 889 key = mParameters.keyAt(index); 890 value = mParameters.valueAt(index); 891 return NO_ERROR; 892 } else { 893 return BAD_VALUE; 894 } 895} 896}; // namespace android 897 898