1 /* 2 * Copyright (C) 2009 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 "AudioPolicyManagerBase" 18 //#define LOG_NDEBUG 0 19 20 //#define VERY_VERBOSE_LOGGING 21 #ifdef VERY_VERBOSE_LOGGING 22 #define ALOGVV ALOGV 23 #else 24 #define ALOGVV(a...) do { } while(0) 25 #endif 26 27 #include <utils/Log.h> 28 #include <hardware_legacy/AudioPolicyManagerBase.h> 29 #include <hardware/audio_effect.h> 30 #include <hardware/audio.h> 31 #include <math.h> 32 #include <hardware_legacy/audio_policy_conf.h> 33 34 namespace android_audio_legacy { 35 36 // ---------------------------------------------------------------------------- 37 // AudioPolicyInterface implementation 38 // ---------------------------------------------------------------------------- 39 40 41 status_t AudioPolicyManagerBase::setDeviceConnectionState(AudioSystem::audio_devices device, 42 AudioSystem::device_connection_state state, 43 const char *device_address) 44 { 45 SortedVector <audio_io_handle_t> outputs; 46 47 ALOGV("setDeviceConnectionState() device: %x, state %d, address %s", device, state, device_address); 48 49 // connect/disconnect only 1 device at a time 50 if (AudioSystem::popCount(device) != 1) return BAD_VALUE; 51 52 if (strlen(device_address) >= MAX_DEVICE_ADDRESS_LEN) { 53 ALOGE("setDeviceConnectionState() invalid address: %s", device_address); 54 return BAD_VALUE; 55 } 56 57 // handle output devices 58 if (AudioSystem::isOutputDevice(device)) { 59 60 if (!mHasA2dp && AudioSystem::isA2dpDevice(device)) { 61 ALOGE("setDeviceConnectionState() invalid device: %x", device); 62 return BAD_VALUE; 63 } 64 if (!mHasUsb && audio_is_usb_device((audio_devices_t)device)) { 65 ALOGE("setDeviceConnectionState() invalid device: %x", device); 66 return BAD_VALUE; 67 } 68 69 switch (state) 70 { 71 // handle output device connection 72 case AudioSystem::DEVICE_STATE_AVAILABLE: 73 if (mAvailableOutputDevices & device) { 74 ALOGW("setDeviceConnectionState() device already connected: %x", device); 75 return INVALID_OPERATION; 76 } 77 ALOGV("setDeviceConnectionState() connecting device %x", device); 78 79 if (checkOutputsForDevice((audio_devices_t)device, state, outputs) != NO_ERROR) { 80 return INVALID_OPERATION; 81 } 82 ALOGV("setDeviceConnectionState() checkOutputsForDevice() returned %d outputs", 83 outputs.size()); 84 // register new device as available 85 mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices | device); 86 87 if (!outputs.isEmpty()) { 88 String8 paramStr; 89 if (mHasA2dp && AudioSystem::isA2dpDevice(device)) { 90 // handle A2DP device connection 91 AudioParameter param; 92 param.add(String8(AUDIO_PARAMETER_A2DP_SINK_ADDRESS), String8(device_address)); 93 paramStr = param.toString(); 94 mA2dpDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN); 95 mA2dpSuspended = false; 96 } else if (AudioSystem::isBluetoothScoDevice(device)) { 97 // handle SCO device connection 98 mScoDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN); 99 } else if (mHasUsb && audio_is_usb_device((audio_devices_t)device)) { 100 // handle USB device connection 101 mUsbCardAndDevice = String8(device_address, MAX_DEVICE_ADDRESS_LEN); 102 paramStr = mUsbCardAndDevice; 103 } 104 if (!paramStr.isEmpty()) { 105 for (size_t i = 0; i < outputs.size(); i++) { 106 mpClientInterface->setParameters(outputs[i], paramStr); 107 } 108 } 109 } 110 break; 111 // handle output device disconnection 112 case AudioSystem::DEVICE_STATE_UNAVAILABLE: { 113 if (!(mAvailableOutputDevices & device)) { 114 ALOGW("setDeviceConnectionState() device not connected: %x", device); 115 return INVALID_OPERATION; 116 } 117 118 ALOGV("setDeviceConnectionState() disconnecting device %x", device); 119 // remove device from available output devices 120 mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices & ~device); 121 122 checkOutputsForDevice((audio_devices_t)device, state, outputs); 123 if (mHasA2dp && AudioSystem::isA2dpDevice(device)) { 124 // handle A2DP device disconnection 125 mA2dpDeviceAddress = ""; 126 mA2dpSuspended = false; 127 } else if (AudioSystem::isBluetoothScoDevice(device)) { 128 // handle SCO device disconnection 129 mScoDeviceAddress = ""; 130 } else if (mHasUsb && audio_is_usb_device((audio_devices_t)device)) { 131 // handle USB device disconnection 132 mUsbCardAndDevice = ""; 133 } 134 } break; 135 136 default: 137 ALOGE("setDeviceConnectionState() invalid state: %x", state); 138 return BAD_VALUE; 139 } 140 141 checkA2dpSuspend(); 142 checkOutputForAllStrategies(); 143 // outputs must be closed after checkOutputForAllStrategies() is executed 144 if (!outputs.isEmpty()) { 145 for (size_t i = 0; i < outputs.size(); i++) { 146 // close unused outputs after device disconnection or direct outputs that have been 147 // opened by checkOutputsForDevice() to query dynamic parameters 148 if ((state == AudioSystem::DEVICE_STATE_UNAVAILABLE) || 149 (mOutputs.valueFor(outputs[i])->mFlags & AUDIO_OUTPUT_FLAG_DIRECT)) { 150 closeOutput(outputs[i]); 151 } 152 } 153 } 154 155 updateDeviceForStrategy(); 156 for (size_t i = 0; i < mOutputs.size(); i++) { 157 setOutputDevice(mOutputs.keyAt(i), getNewDevice(mOutputs.keyAt(i), true /*fromCache*/)); 158 } 159 160 if (device == AudioSystem::DEVICE_OUT_WIRED_HEADSET) { 161 device = AudioSystem::DEVICE_IN_WIRED_HEADSET; 162 } else if (device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO || 163 device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET || 164 device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT) { 165 device = AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET; 166 } else { 167 return NO_ERROR; 168 } 169 } 170 // handle input devices 171 if (AudioSystem::isInputDevice(device)) { 172 173 switch (state) 174 { 175 // handle input device connection 176 case AudioSystem::DEVICE_STATE_AVAILABLE: { 177 if (mAvailableInputDevices & device) { 178 ALOGW("setDeviceConnectionState() device already connected: %d", device); 179 return INVALID_OPERATION; 180 } 181 mAvailableInputDevices = (audio_devices_t)(mAvailableInputDevices | device); 182 } 183 break; 184 185 // handle input device disconnection 186 case AudioSystem::DEVICE_STATE_UNAVAILABLE: { 187 if (!(mAvailableInputDevices & device)) { 188 ALOGW("setDeviceConnectionState() device not connected: %d", device); 189 return INVALID_OPERATION; 190 } 191 mAvailableInputDevices = (audio_devices_t) (mAvailableInputDevices & ~device); 192 } break; 193 194 default: 195 ALOGE("setDeviceConnectionState() invalid state: %x", state); 196 return BAD_VALUE; 197 } 198 199 audio_io_handle_t activeInput = getActiveInput(); 200 if (activeInput != 0) { 201 AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput); 202 audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource); 203 if ((newDevice != 0) && (newDevice != inputDesc->mDevice)) { 204 ALOGV("setDeviceConnectionState() changing device from %x to %x for input %d", 205 inputDesc->mDevice, newDevice, activeInput); 206 inputDesc->mDevice = newDevice; 207 AudioParameter param = AudioParameter(); 208 param.addInt(String8(AudioParameter::keyRouting), (int)newDevice); 209 mpClientInterface->setParameters(activeInput, param.toString()); 210 } 211 } 212 213 return NO_ERROR; 214 } 215 216 ALOGW("setDeviceConnectionState() invalid device: %x", device); 217 return BAD_VALUE; 218 } 219 220 AudioSystem::device_connection_state AudioPolicyManagerBase::getDeviceConnectionState(AudioSystem::audio_devices device, 221 const char *device_address) 222 { 223 AudioSystem::device_connection_state state = AudioSystem::DEVICE_STATE_UNAVAILABLE; 224 String8 address = String8(device_address); 225 if (AudioSystem::isOutputDevice(device)) { 226 if (device & mAvailableOutputDevices) { 227 if (AudioSystem::isA2dpDevice(device) && 228 (!mHasA2dp || (address != "" && mA2dpDeviceAddress != address))) { 229 return state; 230 } 231 if (AudioSystem::isBluetoothScoDevice(device) && 232 address != "" && mScoDeviceAddress != address) { 233 return state; 234 } 235 if (audio_is_usb_device((audio_devices_t)device) && 236 (!mHasUsb || (address != "" && mUsbCardAndDevice != address))) { 237 ALOGE("setDeviceConnectionState() invalid device: %x", device); 238 return state; 239 } 240 state = AudioSystem::DEVICE_STATE_AVAILABLE; 241 } 242 } else if (AudioSystem::isInputDevice(device)) { 243 if (device & mAvailableInputDevices) { 244 state = AudioSystem::DEVICE_STATE_AVAILABLE; 245 } 246 } 247 248 return state; 249 } 250 251 void AudioPolicyManagerBase::setPhoneState(int state) 252 { 253 ALOGV("setPhoneState() state %d", state); 254 audio_devices_t newDevice = (audio_devices_t)0; 255 if (state < 0 || state >= AudioSystem::NUM_MODES) { 256 ALOGW("setPhoneState() invalid state %d", state); 257 return; 258 } 259 260 if (state == mPhoneState ) { 261 ALOGW("setPhoneState() setting same state %d", state); 262 return; 263 } 264 265 // if leaving call state, handle special case of active streams 266 // pertaining to sonification strategy see handleIncallSonification() 267 if (isInCall()) { 268 ALOGV("setPhoneState() in call state management: new state is %d", state); 269 for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) { 270 handleIncallSonification(stream, false, true); 271 } 272 } 273 274 // store previous phone state for management of sonification strategy below 275 int oldState = mPhoneState; 276 mPhoneState = state; 277 bool force = false; 278 279 // are we entering or starting a call 280 if (!isStateInCall(oldState) && isStateInCall(state)) { 281 ALOGV(" Entering call in setPhoneState()"); 282 // force routing command to audio hardware when starting a call 283 // even if no device change is needed 284 force = true; 285 } else if (isStateInCall(oldState) && !isStateInCall(state)) { 286 ALOGV(" Exiting call in setPhoneState()"); 287 // force routing command to audio hardware when exiting a call 288 // even if no device change is needed 289 force = true; 290 } else if (isStateInCall(state) && (state != oldState)) { 291 ALOGV(" Switching between telephony and VoIP in setPhoneState()"); 292 // force routing command to audio hardware when switching between telephony and VoIP 293 // even if no device change is needed 294 force = true; 295 } 296 297 // check for device and output changes triggered by new phone state 298 newDevice = getNewDevice(mPrimaryOutput, false /*fromCache*/); 299 checkA2dpSuspend(); 300 checkOutputForAllStrategies(); 301 updateDeviceForStrategy(); 302 303 AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mPrimaryOutput); 304 305 // force routing command to audio hardware when ending call 306 // even if no device change is needed 307 if (isStateInCall(oldState) && newDevice == 0) { 308 newDevice = hwOutputDesc->device(); 309 } 310 311 // when changing from ring tone to in call mode, mute the ringing tone 312 // immediately and delay the route change to avoid sending the ring tone 313 // tail into the earpiece or headset. 314 int delayMs = 0; 315 if (isStateInCall(state) && oldState == AudioSystem::MODE_RINGTONE) { 316 // delay the device change command by twice the output latency to have some margin 317 // and be sure that audio buffers not yet affected by the mute are out when 318 // we actually apply the route change 319 delayMs = hwOutputDesc->mLatency*2; 320 setStreamMute(AudioSystem::RING, true, mPrimaryOutput); 321 } 322 323 // change routing is necessary 324 setOutputDevice(mPrimaryOutput, newDevice, force, delayMs); 325 326 // if entering in call state, handle special case of active streams 327 // pertaining to sonification strategy see handleIncallSonification() 328 if (isStateInCall(state)) { 329 ALOGV("setPhoneState() in call state management: new state is %d", state); 330 // unmute the ringing tone after a sufficient delay if it was muted before 331 // setting output device above 332 if (oldState == AudioSystem::MODE_RINGTONE) { 333 setStreamMute(AudioSystem::RING, false, mPrimaryOutput, MUTE_TIME_MS); 334 } 335 for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) { 336 handleIncallSonification(stream, true, true); 337 } 338 } 339 340 // Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE 341 if (state == AudioSystem::MODE_RINGTONE && 342 isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY)) { 343 mLimitRingtoneVolume = true; 344 } else { 345 mLimitRingtoneVolume = false; 346 } 347 } 348 349 void AudioPolicyManagerBase::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config) 350 { 351 ALOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState); 352 353 bool forceVolumeReeval = false; 354 switch(usage) { 355 case AudioSystem::FOR_COMMUNICATION: 356 if (config != AudioSystem::FORCE_SPEAKER && config != AudioSystem::FORCE_BT_SCO && 357 config != AudioSystem::FORCE_NONE) { 358 ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config); 359 return; 360 } 361 forceVolumeReeval = true; 362 mForceUse[usage] = config; 363 break; 364 case AudioSystem::FOR_MEDIA: 365 if (config != AudioSystem::FORCE_HEADPHONES && config != AudioSystem::FORCE_BT_A2DP && 366 config != AudioSystem::FORCE_WIRED_ACCESSORY && 367 config != AudioSystem::FORCE_ANALOG_DOCK && 368 config != AudioSystem::FORCE_DIGITAL_DOCK && config != AudioSystem::FORCE_NONE && 369 config != AudioSystem::FORCE_NO_BT_A2DP) { 370 ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config); 371 return; 372 } 373 mForceUse[usage] = config; 374 break; 375 case AudioSystem::FOR_RECORD: 376 if (config != AudioSystem::FORCE_BT_SCO && config != AudioSystem::FORCE_WIRED_ACCESSORY && 377 config != AudioSystem::FORCE_NONE) { 378 ALOGW("setForceUse() invalid config %d for FOR_RECORD", config); 379 return; 380 } 381 mForceUse[usage] = config; 382 break; 383 case AudioSystem::FOR_DOCK: 384 if (config != AudioSystem::FORCE_NONE && config != AudioSystem::FORCE_BT_CAR_DOCK && 385 config != AudioSystem::FORCE_BT_DESK_DOCK && 386 config != AudioSystem::FORCE_WIRED_ACCESSORY && 387 config != AudioSystem::FORCE_ANALOG_DOCK && 388 config != AudioSystem::FORCE_DIGITAL_DOCK) { 389 ALOGW("setForceUse() invalid config %d for FOR_DOCK", config); 390 } 391 forceVolumeReeval = true; 392 mForceUse[usage] = config; 393 break; 394 default: 395 ALOGW("setForceUse() invalid usage %d", usage); 396 break; 397 } 398 399 // check for device and output changes triggered by new force usage 400 checkA2dpSuspend(); 401 checkOutputForAllStrategies(); 402 updateDeviceForStrategy(); 403 for (size_t i = 0; i < mOutputs.size(); i++) { 404 audio_io_handle_t output = mOutputs.keyAt(i); 405 audio_devices_t newDevice = getNewDevice(output, true /*fromCache*/); 406 setOutputDevice(output, newDevice, (newDevice != 0)); 407 if (forceVolumeReeval && (newDevice != 0)) { 408 applyStreamVolumes(output, newDevice, 0, true); 409 } 410 } 411 412 audio_io_handle_t activeInput = getActiveInput(); 413 if (activeInput != 0) { 414 AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput); 415 audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource); 416 if ((newDevice != 0) && (newDevice != inputDesc->mDevice)) { 417 ALOGV("setForceUse() changing device from %x to %x for input %d", 418 inputDesc->mDevice, newDevice, activeInput); 419 inputDesc->mDevice = newDevice; 420 AudioParameter param = AudioParameter(); 421 param.addInt(String8(AudioParameter::keyRouting), (int)newDevice); 422 mpClientInterface->setParameters(activeInput, param.toString()); 423 } 424 } 425 426 } 427 428 AudioSystem::forced_config AudioPolicyManagerBase::getForceUse(AudioSystem::force_use usage) 429 { 430 return mForceUse[usage]; 431 } 432 433 void AudioPolicyManagerBase::setSystemProperty(const char* property, const char* value) 434 { 435 ALOGV("setSystemProperty() property %s, value %s", property, value); 436 if (strcmp(property, "ro.camera.sound.forced") == 0) { 437 if (atoi(value)) { 438 ALOGV("ENFORCED_AUDIBLE cannot be muted"); 439 mStreams[AudioSystem::ENFORCED_AUDIBLE].mCanBeMuted = false; 440 } else { 441 ALOGV("ENFORCED_AUDIBLE can be muted"); 442 mStreams[AudioSystem::ENFORCED_AUDIBLE].mCanBeMuted = true; 443 } 444 } 445 } 446 447 AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getProfileForDirectOutput( 448 audio_devices_t device, 449 uint32_t samplingRate, 450 uint32_t format, 451 uint32_t channelMask, 452 audio_output_flags_t flags) 453 { 454 for (size_t i = 0; i < mHwModules.size(); i++) { 455 if (mHwModules[i]->mHandle == 0) { 456 continue; 457 } 458 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) { 459 IOProfile *profile = mHwModules[i]->mOutputProfiles[j]; 460 if (profile->isCompatibleProfile(device, samplingRate, format, 461 channelMask, 462 AUDIO_OUTPUT_FLAG_DIRECT)) { 463 if (mAvailableOutputDevices & profile->mSupportedDevices) { 464 return mHwModules[i]->mOutputProfiles[j]; 465 } 466 } 467 } 468 } 469 return 0; 470 } 471 472 audio_io_handle_t AudioPolicyManagerBase::getOutput(AudioSystem::stream_type stream, 473 uint32_t samplingRate, 474 uint32_t format, 475 uint32_t channelMask, 476 AudioSystem::output_flags flags) 477 { 478 audio_io_handle_t output = 0; 479 uint32_t latency = 0; 480 routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream); 481 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 482 ALOGV("getOutput() stream %d, samplingRate %d, format %d, channelMask %x, flags %x", 483 stream, samplingRate, format, channelMask, flags); 484 485 #ifdef AUDIO_POLICY_TEST 486 if (mCurOutput != 0) { 487 ALOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channelMask %x, mDirectOutput %d", 488 mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput); 489 490 if (mTestOutputs[mCurOutput] == 0) { 491 ALOGV("getOutput() opening test output"); 492 AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL); 493 outputDesc->mDevice = mTestDevice; 494 outputDesc->mSamplingRate = mTestSamplingRate; 495 outputDesc->mFormat = mTestFormat; 496 outputDesc->mChannelMask = mTestChannels; 497 outputDesc->mLatency = mTestLatencyMs; 498 outputDesc->mFlags = (audio_output_flags_t)(mDirectOutput ? AudioSystem::OUTPUT_FLAG_DIRECT : 0); 499 outputDesc->mRefCount[stream] = 0; 500 mTestOutputs[mCurOutput] = mpClientInterface->openOutput(0, &outputDesc->mDevice, 501 &outputDesc->mSamplingRate, 502 &outputDesc->mFormat, 503 &outputDesc->mChannelMask, 504 &outputDesc->mLatency, 505 outputDesc->mFlags); 506 if (mTestOutputs[mCurOutput]) { 507 AudioParameter outputCmd = AudioParameter(); 508 outputCmd.addInt(String8("set_id"),mCurOutput); 509 mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString()); 510 addOutput(mTestOutputs[mCurOutput], outputDesc); 511 } 512 } 513 return mTestOutputs[mCurOutput]; 514 } 515 #endif //AUDIO_POLICY_TEST 516 517 // open a direct output if required by specified parameters 518 IOProfile *profile = getProfileForDirectOutput(device, 519 samplingRate, 520 format, 521 channelMask, 522 (audio_output_flags_t)flags); 523 if (profile != NULL) { 524 525 ALOGV("getOutput() opening direct output device %x", device); 526 527 AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(profile); 528 outputDesc->mDevice = device; 529 outputDesc->mSamplingRate = samplingRate; 530 outputDesc->mFormat = (audio_format_t)format; 531 outputDesc->mChannelMask = (audio_channel_mask_t)channelMask; 532 outputDesc->mLatency = 0; 533 outputDesc->mFlags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DIRECT);; 534 outputDesc->mRefCount[stream] = 0; 535 outputDesc->mStopTime[stream] = 0; 536 output = mpClientInterface->openOutput(profile->mModule->mHandle, 537 &outputDesc->mDevice, 538 &outputDesc->mSamplingRate, 539 &outputDesc->mFormat, 540 &outputDesc->mChannelMask, 541 &outputDesc->mLatency, 542 outputDesc->mFlags); 543 544 // only accept an output with the requested parameters 545 if (output == 0 || 546 (samplingRate != 0 && samplingRate != outputDesc->mSamplingRate) || 547 (format != 0 && format != outputDesc->mFormat) || 548 (channelMask != 0 && channelMask != outputDesc->mChannelMask)) { 549 ALOGV("getOutput() failed opening direct output: output %d samplingRate %d %d," 550 "format %d %d, channelMask %04x %04x", output, samplingRate, 551 outputDesc->mSamplingRate, format, outputDesc->mFormat, channelMask, 552 outputDesc->mChannelMask); 553 if (output != 0) { 554 mpClientInterface->closeOutput(output); 555 } 556 delete outputDesc; 557 return 0; 558 } 559 addOutput(output, outputDesc); 560 ALOGV("getOutput() returns direct output %d", output); 561 return output; 562 } 563 564 // ignoring channel mask due to downmix capability in mixer 565 566 // open a non direct output 567 568 // get which output is suitable for the specified stream. The actual routing change will happen 569 // when startOutput() will be called 570 SortedVector<audio_io_handle_t> outputs = getOutputsForDevice(device); 571 572 output = selectOutput(outputs, flags); 573 574 ALOGW_IF((output ==0), "getOutput() could not find output for stream %d, samplingRate %d," 575 "format %d, channels %x, flags %x", stream, samplingRate, format, channelMask, flags); 576 577 ALOGV("getOutput() returns output %d", output); 578 579 return output; 580 } 581 582 audio_io_handle_t AudioPolicyManagerBase::selectOutput(const SortedVector<audio_io_handle_t>& outputs, 583 AudioSystem::output_flags flags) 584 { 585 // select one output among several that provide a path to a particular device or set of 586 // devices (the list was previously build by getOutputsForDevice()). 587 // The priority is as follows: 588 // 1: the output with the highest number of requested policy flags 589 // 2: the primary output 590 // 3: the first output in the list 591 592 if (outputs.size() == 0) { 593 return 0; 594 } 595 if (outputs.size() == 1) { 596 return outputs[0]; 597 } 598 599 int maxCommonFlags = 0; 600 audio_io_handle_t outputFlags = 0; 601 audio_io_handle_t outputPrimary = 0; 602 603 for (size_t i = 0; i < outputs.size(); i++) { 604 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(outputs[i]); 605 if (!outputDesc->isDuplicated()) { 606 int commonFlags = (int)AudioSystem::popCount(outputDesc->mProfile->mFlags & flags); 607 if (commonFlags > maxCommonFlags) { 608 outputFlags = outputs[i]; 609 maxCommonFlags = commonFlags; 610 ALOGV("selectOutput() commonFlags for output %d, %04x", outputs[i], commonFlags); 611 } 612 if (outputDesc->mProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) { 613 outputPrimary = outputs[i]; 614 } 615 } 616 } 617 618 if (outputFlags != 0) { 619 return outputFlags; 620 } 621 if (outputPrimary != 0) { 622 return outputPrimary; 623 } 624 625 return outputs[0]; 626 } 627 628 status_t AudioPolicyManagerBase::startOutput(audio_io_handle_t output, 629 AudioSystem::stream_type stream, 630 int session) 631 { 632 ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session); 633 ssize_t index = mOutputs.indexOfKey(output); 634 if (index < 0) { 635 ALOGW("startOutput() unknow output %d", output); 636 return BAD_VALUE; 637 } 638 639 AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index); 640 641 // increment usage count for this stream on the requested output: 642 // NOTE that the usage count is the same for duplicated output and hardware output which is 643 // necessary for a correct control of hardware output routing by startOutput() and stopOutput() 644 outputDesc->changeRefCount(stream, 1); 645 646 if (outputDesc->mRefCount[stream] == 1) { 647 audio_devices_t prevDevice = outputDesc->device(); 648 audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/); 649 routing_strategy strategy = getStrategy(stream); 650 bool shouldWait = (strategy == STRATEGY_SONIFICATION) || 651 (strategy == STRATEGY_SONIFICATION_RESPECTFUL); 652 uint32_t waitMs = 0; 653 bool force = false; 654 for (size_t i = 0; i < mOutputs.size(); i++) { 655 AudioOutputDescriptor *desc = mOutputs.valueAt(i); 656 if (desc != outputDesc) { 657 // force a device change if any other output is managed by the same hw 658 // module and has a current device selection that differs from selected device. 659 // In this case, the audio HAL must receive the new device selection so that it can 660 // change the device currently selected by the other active output. 661 if (outputDesc->sharesHwModuleWith(desc) && 662 desc->device() != newDevice) { 663 force = true; 664 } 665 // wait for audio on other active outputs to be presented when starting 666 // a notification so that audio focus effect can propagate. 667 if (shouldWait && (desc->refCount() != 0) && (waitMs < desc->latency())) { 668 waitMs = desc->latency(); 669 } 670 } 671 } 672 uint32_t muteWaitMs = setOutputDevice(output, newDevice, force); 673 674 // handle special case for sonification while in call 675 if (isInCall()) { 676 handleIncallSonification(stream, true, false); 677 } 678 679 // apply volume rules for current stream and device if necessary 680 checkAndSetVolume(stream, 681 mStreams[stream].getVolumeIndex((audio_devices_t)newDevice), 682 output, 683 newDevice); 684 685 // update the outputs if starting an output with a stream that can affect notification 686 // routing 687 handleNotificationRoutingForStream(stream); 688 if (waitMs > muteWaitMs) { 689 usleep((waitMs - muteWaitMs) * 2 * 1000); 690 } 691 } 692 return NO_ERROR; 693 } 694 695 696 status_t AudioPolicyManagerBase::stopOutput(audio_io_handle_t output, 697 AudioSystem::stream_type stream, 698 int session) 699 { 700 ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session); 701 ssize_t index = mOutputs.indexOfKey(output); 702 if (index < 0) { 703 ALOGW("stopOutput() unknow output %d", output); 704 return BAD_VALUE; 705 } 706 707 AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index); 708 709 // handle special case for sonification while in call 710 if (isInCall()) { 711 handleIncallSonification(stream, false, false); 712 } 713 714 if (outputDesc->mRefCount[stream] > 0) { 715 // decrement usage count of this stream on the output 716 outputDesc->changeRefCount(stream, -1); 717 // store time at which the stream was stopped - see isStreamActive() 718 if (outputDesc->mRefCount[stream] == 0) { 719 outputDesc->mStopTime[stream] = systemTime(); 720 audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/); 721 // delay the device switch by twice the latency because stopOutput() is executed when 722 // the track stop() command is received and at that time the audio track buffer can 723 // still contain data that needs to be drained. The latency only covers the audio HAL 724 // and kernel buffers. Also the latency does not always include additional delay in the 725 // audio path (audio DSP, CODEC ...) 726 setOutputDevice(output, newDevice, false, outputDesc->mLatency*2); 727 728 // force restoring the device selection on other active outputs if it differs from the 729 // one being selected for this output 730 for (size_t i = 0; i < mOutputs.size(); i++) { 731 audio_io_handle_t curOutput = mOutputs.keyAt(i); 732 AudioOutputDescriptor *desc = mOutputs.valueAt(i); 733 if (curOutput != output && 734 desc->refCount() != 0 && 735 outputDesc->sharesHwModuleWith(desc) && 736 newDevice != desc->device()) { 737 setOutputDevice(curOutput, 738 getNewDevice(curOutput, false /*fromCache*/), 739 true, 740 outputDesc->mLatency*2); 741 } 742 } 743 // update the outputs if stopping one with a stream that can affect notification routing 744 handleNotificationRoutingForStream(stream); 745 } 746 return NO_ERROR; 747 } else { 748 ALOGW("stopOutput() refcount is already 0 for output %d", output); 749 return INVALID_OPERATION; 750 } 751 } 752 753 void AudioPolicyManagerBase::releaseOutput(audio_io_handle_t output) 754 { 755 ALOGV("releaseOutput() %d", output); 756 ssize_t index = mOutputs.indexOfKey(output); 757 if (index < 0) { 758 ALOGW("releaseOutput() releasing unknown output %d", output); 759 return; 760 } 761 762 #ifdef AUDIO_POLICY_TEST 763 int testIndex = testOutputIndex(output); 764 if (testIndex != 0) { 765 AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index); 766 if (outputDesc->refCount() == 0) { 767 mpClientInterface->closeOutput(output); 768 delete mOutputs.valueAt(index); 769 mOutputs.removeItem(output); 770 mTestOutputs[testIndex] = 0; 771 } 772 return; 773 } 774 #endif //AUDIO_POLICY_TEST 775 776 if (mOutputs.valueAt(index)->mFlags & AudioSystem::OUTPUT_FLAG_DIRECT) { 777 mpClientInterface->closeOutput(output); 778 delete mOutputs.valueAt(index); 779 mOutputs.removeItem(output); 780 } 781 782 } 783 784 audio_io_handle_t AudioPolicyManagerBase::getInput(int inputSource, 785 uint32_t samplingRate, 786 uint32_t format, 787 uint32_t channelMask, 788 AudioSystem::audio_in_acoustics acoustics) 789 { 790 audio_io_handle_t input = 0; 791 audio_devices_t device = getDeviceForInputSource(inputSource); 792 793 ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channelMask %x, acoustics %x", 794 inputSource, samplingRate, format, channelMask, acoustics); 795 796 if (device == 0) { 797 ALOGW("getInput() could not find device for inputSource %d", inputSource); 798 return 0; 799 } 800 801 // adapt channel selection to input source 802 switch(inputSource) { 803 case AUDIO_SOURCE_VOICE_UPLINK: 804 channelMask = AudioSystem::CHANNEL_IN_VOICE_UPLINK; 805 break; 806 case AUDIO_SOURCE_VOICE_DOWNLINK: 807 channelMask = AudioSystem::CHANNEL_IN_VOICE_DNLINK; 808 break; 809 case AUDIO_SOURCE_VOICE_CALL: 810 channelMask = (AudioSystem::CHANNEL_IN_VOICE_UPLINK | AudioSystem::CHANNEL_IN_VOICE_DNLINK); 811 break; 812 default: 813 break; 814 } 815 816 IOProfile *profile = getInputProfile(device, 817 samplingRate, 818 format, 819 channelMask); 820 if (profile == NULL) { 821 ALOGW("getInput() could not find profile for device %04x, samplingRate %d, format %d," 822 "channelMask %04x", 823 device, samplingRate, format, channelMask); 824 return 0; 825 } 826 827 if (profile->mModule->mHandle == 0) { 828 ALOGE("getInput(): HW module %s not opened", profile->mModule->mName); 829 return 0; 830 } 831 832 AudioInputDescriptor *inputDesc = new AudioInputDescriptor(profile); 833 834 inputDesc->mInputSource = inputSource; 835 inputDesc->mDevice = device; 836 inputDesc->mSamplingRate = samplingRate; 837 inputDesc->mFormat = (audio_format_t)format; 838 inputDesc->mChannelMask = (audio_channel_mask_t)channelMask; 839 inputDesc->mRefCount = 0; 840 input = mpClientInterface->openInput(profile->mModule->mHandle, 841 &inputDesc->mDevice, 842 &inputDesc->mSamplingRate, 843 &inputDesc->mFormat, 844 &inputDesc->mChannelMask); 845 846 // only accept input with the exact requested set of parameters 847 if (input == 0 || 848 (samplingRate != inputDesc->mSamplingRate) || 849 (format != inputDesc->mFormat) || 850 (channelMask != inputDesc->mChannelMask)) { 851 ALOGV("getInput() failed opening input: samplingRate %d, format %d, channelMask %d", 852 samplingRate, format, channelMask); 853 if (input != 0) { 854 mpClientInterface->closeInput(input); 855 } 856 delete inputDesc; 857 return 0; 858 } 859 mInputs.add(input, inputDesc); 860 return input; 861 } 862 863 status_t AudioPolicyManagerBase::startInput(audio_io_handle_t input) 864 { 865 ALOGV("startInput() input %d", input); 866 ssize_t index = mInputs.indexOfKey(input); 867 if (index < 0) { 868 ALOGW("startInput() unknow input %d", input); 869 return BAD_VALUE; 870 } 871 AudioInputDescriptor *inputDesc = mInputs.valueAt(index); 872 873 #ifdef AUDIO_POLICY_TEST 874 if (mTestInput == 0) 875 #endif //AUDIO_POLICY_TEST 876 { 877 // refuse 2 active AudioRecord clients at the same time 878 if (getActiveInput() != 0) { 879 ALOGW("startInput() input %d failed: other input already started", input); 880 return INVALID_OPERATION; 881 } 882 } 883 884 AudioParameter param = AudioParameter(); 885 param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice); 886 887 param.addInt(String8(AudioParameter::keyInputSource), (int)inputDesc->mInputSource); 888 ALOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource); 889 890 mpClientInterface->setParameters(input, param.toString()); 891 892 inputDesc->mRefCount = 1; 893 return NO_ERROR; 894 } 895 896 status_t AudioPolicyManagerBase::stopInput(audio_io_handle_t input) 897 { 898 ALOGV("stopInput() input %d", input); 899 ssize_t index = mInputs.indexOfKey(input); 900 if (index < 0) { 901 ALOGW("stopInput() unknow input %d", input); 902 return BAD_VALUE; 903 } 904 AudioInputDescriptor *inputDesc = mInputs.valueAt(index); 905 906 if (inputDesc->mRefCount == 0) { 907 ALOGW("stopInput() input %d already stopped", input); 908 return INVALID_OPERATION; 909 } else { 910 AudioParameter param = AudioParameter(); 911 param.addInt(String8(AudioParameter::keyRouting), 0); 912 mpClientInterface->setParameters(input, param.toString()); 913 inputDesc->mRefCount = 0; 914 return NO_ERROR; 915 } 916 } 917 918 void AudioPolicyManagerBase::releaseInput(audio_io_handle_t input) 919 { 920 ALOGV("releaseInput() %d", input); 921 ssize_t index = mInputs.indexOfKey(input); 922 if (index < 0) { 923 ALOGW("releaseInput() releasing unknown input %d", input); 924 return; 925 } 926 mpClientInterface->closeInput(input); 927 delete mInputs.valueAt(index); 928 mInputs.removeItem(input); 929 ALOGV("releaseInput() exit"); 930 } 931 932 void AudioPolicyManagerBase::initStreamVolume(AudioSystem::stream_type stream, 933 int indexMin, 934 int indexMax) 935 { 936 ALOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax); 937 if (indexMin < 0 || indexMin >= indexMax) { 938 ALOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax); 939 return; 940 } 941 mStreams[stream].mIndexMin = indexMin; 942 mStreams[stream].mIndexMax = indexMax; 943 } 944 945 status_t AudioPolicyManagerBase::setStreamVolumeIndex(AudioSystem::stream_type stream, 946 int index, 947 audio_devices_t device) 948 { 949 950 if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) { 951 return BAD_VALUE; 952 } 953 if (!audio_is_output_device(device)) { 954 return BAD_VALUE; 955 } 956 957 // Force max volume if stream cannot be muted 958 if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax; 959 960 ALOGV("setStreamVolumeIndex() stream %d, device %04x, index %d", 961 stream, device, index); 962 963 // if device is AUDIO_DEVICE_OUT_DEFAULT set default value and 964 // clear all device specific values 965 if (device == AUDIO_DEVICE_OUT_DEFAULT) { 966 mStreams[stream].mIndexCur.clear(); 967 } 968 mStreams[stream].mIndexCur.add(device, index); 969 970 // compute and apply stream volume on all outputs according to connected device 971 status_t status = NO_ERROR; 972 for (size_t i = 0; i < mOutputs.size(); i++) { 973 audio_devices_t curDevice = 974 getDeviceForVolume((audio_devices_t)mOutputs.valueAt(i)->device()); 975 if (device == curDevice) { 976 status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), curDevice); 977 if (volStatus != NO_ERROR) { 978 status = volStatus; 979 } 980 } 981 } 982 return status; 983 } 984 985 status_t AudioPolicyManagerBase::getStreamVolumeIndex(AudioSystem::stream_type stream, 986 int *index, 987 audio_devices_t device) 988 { 989 if (index == NULL) { 990 return BAD_VALUE; 991 } 992 if (!audio_is_output_device(device)) { 993 return BAD_VALUE; 994 } 995 // if device is AUDIO_DEVICE_OUT_DEFAULT, return volume for device corresponding to 996 // the strategy the stream belongs to. 997 if (device == AUDIO_DEVICE_OUT_DEFAULT) { 998 device = (audio_devices_t)getDeviceForStrategy(getStrategy(stream), true /*fromCache*/); 999 } 1000 device = getDeviceForVolume(device); 1001 1002 *index = mStreams[stream].getVolumeIndex(device); 1003 ALOGV("getStreamVolumeIndex() stream %d device %08x index %d", stream, device, *index); 1004 return NO_ERROR; 1005 } 1006 1007 audio_io_handle_t AudioPolicyManagerBase::getOutputForEffect(effect_descriptor_t *desc) 1008 { 1009 ALOGV("getOutputForEffect()"); 1010 // apply simple rule where global effects are attached to the same output as MUSIC streams 1011 1012 routing_strategy strategy = getStrategy(AudioSystem::MUSIC); 1013 audio_devices_t device = getDeviceForStrategy(strategy, false /*fromCache*/); 1014 SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(device); 1015 int outIdx = 0; 1016 for (size_t i = 0; i < dstOutputs.size(); i++) { 1017 AudioOutputDescriptor *desc = mOutputs.valueFor(dstOutputs[i]); 1018 if (desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) { 1019 outIdx = i; 1020 } 1021 } 1022 return dstOutputs[outIdx]; 1023 } 1024 1025 status_t AudioPolicyManagerBase::registerEffect(effect_descriptor_t *desc, 1026 audio_io_handle_t io, 1027 uint32_t strategy, 1028 int session, 1029 int id) 1030 { 1031 ssize_t index = mOutputs.indexOfKey(io); 1032 if (index < 0) { 1033 index = mInputs.indexOfKey(io); 1034 if (index < 0) { 1035 ALOGW("registerEffect() unknown io %d", io); 1036 return INVALID_OPERATION; 1037 } 1038 } 1039 1040 if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) { 1041 ALOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB", 1042 desc->name, desc->memoryUsage); 1043 return INVALID_OPERATION; 1044 } 1045 mTotalEffectsMemory += desc->memoryUsage; 1046 ALOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d", 1047 desc->name, io, strategy, session, id); 1048 ALOGV("registerEffect() memory %d, total memory %d", desc->memoryUsage, mTotalEffectsMemory); 1049 1050 EffectDescriptor *pDesc = new EffectDescriptor(); 1051 memcpy (&pDesc->mDesc, desc, sizeof(effect_descriptor_t)); 1052 pDesc->mIo = io; 1053 pDesc->mStrategy = (routing_strategy)strategy; 1054 pDesc->mSession = session; 1055 pDesc->mEnabled = false; 1056 1057 mEffects.add(id, pDesc); 1058 1059 return NO_ERROR; 1060 } 1061 1062 status_t AudioPolicyManagerBase::unregisterEffect(int id) 1063 { 1064 ssize_t index = mEffects.indexOfKey(id); 1065 if (index < 0) { 1066 ALOGW("unregisterEffect() unknown effect ID %d", id); 1067 return INVALID_OPERATION; 1068 } 1069 1070 EffectDescriptor *pDesc = mEffects.valueAt(index); 1071 1072 setEffectEnabled(pDesc, false); 1073 1074 if (mTotalEffectsMemory < pDesc->mDesc.memoryUsage) { 1075 ALOGW("unregisterEffect() memory %d too big for total %d", 1076 pDesc->mDesc.memoryUsage, mTotalEffectsMemory); 1077 pDesc->mDesc.memoryUsage = mTotalEffectsMemory; 1078 } 1079 mTotalEffectsMemory -= pDesc->mDesc.memoryUsage; 1080 ALOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d", 1081 pDesc->mDesc.name, id, pDesc->mDesc.memoryUsage, mTotalEffectsMemory); 1082 1083 mEffects.removeItem(id); 1084 delete pDesc; 1085 1086 return NO_ERROR; 1087 } 1088 1089 status_t AudioPolicyManagerBase::setEffectEnabled(int id, bool enabled) 1090 { 1091 ssize_t index = mEffects.indexOfKey(id); 1092 if (index < 0) { 1093 ALOGW("unregisterEffect() unknown effect ID %d", id); 1094 return INVALID_OPERATION; 1095 } 1096 1097 return setEffectEnabled(mEffects.valueAt(index), enabled); 1098 } 1099 1100 status_t AudioPolicyManagerBase::setEffectEnabled(EffectDescriptor *pDesc, bool enabled) 1101 { 1102 if (enabled == pDesc->mEnabled) { 1103 ALOGV("setEffectEnabled(%s) effect already %s", 1104 enabled?"true":"false", enabled?"enabled":"disabled"); 1105 return INVALID_OPERATION; 1106 } 1107 1108 if (enabled) { 1109 if (mTotalEffectsCpuLoad + pDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) { 1110 ALOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS", 1111 pDesc->mDesc.name, (float)pDesc->mDesc.cpuLoad/10); 1112 return INVALID_OPERATION; 1113 } 1114 mTotalEffectsCpuLoad += pDesc->mDesc.cpuLoad; 1115 ALOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad); 1116 } else { 1117 if (mTotalEffectsCpuLoad < pDesc->mDesc.cpuLoad) { 1118 ALOGW("setEffectEnabled(false) CPU load %d too high for total %d", 1119 pDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad); 1120 pDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad; 1121 } 1122 mTotalEffectsCpuLoad -= pDesc->mDesc.cpuLoad; 1123 ALOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad); 1124 } 1125 pDesc->mEnabled = enabled; 1126 return NO_ERROR; 1127 } 1128 1129 bool AudioPolicyManagerBase::isStreamActive(int stream, uint32_t inPastMs) const 1130 { 1131 nsecs_t sysTime = systemTime(); 1132 for (size_t i = 0; i < mOutputs.size(); i++) { 1133 if (mOutputs.valueAt(i)->mRefCount[stream] != 0 || 1134 ns2ms(sysTime - mOutputs.valueAt(i)->mStopTime[stream]) < inPastMs) { 1135 return true; 1136 } 1137 } 1138 return false; 1139 } 1140 1141 1142 status_t AudioPolicyManagerBase::dump(int fd) 1143 { 1144 const size_t SIZE = 256; 1145 char buffer[SIZE]; 1146 String8 result; 1147 1148 snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this); 1149 result.append(buffer); 1150 1151 snprintf(buffer, SIZE, " Primary Output: %d\n", mPrimaryOutput); 1152 result.append(buffer); 1153 snprintf(buffer, SIZE, " A2DP device address: %s\n", mA2dpDeviceAddress.string()); 1154 result.append(buffer); 1155 snprintf(buffer, SIZE, " SCO device address: %s\n", mScoDeviceAddress.string()); 1156 result.append(buffer); 1157 snprintf(buffer, SIZE, " USB audio ALSA %s\n", mUsbCardAndDevice.string()); 1158 result.append(buffer); 1159 snprintf(buffer, SIZE, " Output devices: %08x\n", mAvailableOutputDevices); 1160 result.append(buffer); 1161 snprintf(buffer, SIZE, " Input devices: %08x\n", mAvailableInputDevices); 1162 result.append(buffer); 1163 snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState); 1164 result.append(buffer); 1165 snprintf(buffer, SIZE, " Force use for communications %d\n", mForceUse[AudioSystem::FOR_COMMUNICATION]); 1166 result.append(buffer); 1167 snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AudioSystem::FOR_MEDIA]); 1168 result.append(buffer); 1169 snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AudioSystem::FOR_RECORD]); 1170 result.append(buffer); 1171 snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AudioSystem::FOR_DOCK]); 1172 result.append(buffer); 1173 write(fd, result.string(), result.size()); 1174 1175 1176 snprintf(buffer, SIZE, "\nHW Modules dump:\n"); 1177 write(fd, buffer, strlen(buffer)); 1178 for (size_t i = 0; i < mHwModules.size(); i++) { 1179 snprintf(buffer, SIZE, "- HW Module %d:\n", i + 1); 1180 write(fd, buffer, strlen(buffer)); 1181 mHwModules[i]->dump(fd); 1182 } 1183 1184 snprintf(buffer, SIZE, "\nOutputs dump:\n"); 1185 write(fd, buffer, strlen(buffer)); 1186 for (size_t i = 0; i < mOutputs.size(); i++) { 1187 snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i)); 1188 write(fd, buffer, strlen(buffer)); 1189 mOutputs.valueAt(i)->dump(fd); 1190 } 1191 1192 snprintf(buffer, SIZE, "\nInputs dump:\n"); 1193 write(fd, buffer, strlen(buffer)); 1194 for (size_t i = 0; i < mInputs.size(); i++) { 1195 snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i)); 1196 write(fd, buffer, strlen(buffer)); 1197 mInputs.valueAt(i)->dump(fd); 1198 } 1199 1200 snprintf(buffer, SIZE, "\nStreams dump:\n"); 1201 write(fd, buffer, strlen(buffer)); 1202 snprintf(buffer, SIZE, 1203 " Stream Can be muted Index Min Index Max Index Cur [device : index]...\n"); 1204 write(fd, buffer, strlen(buffer)); 1205 for (size_t i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) { 1206 snprintf(buffer, SIZE, " %02d ", i); 1207 write(fd, buffer, strlen(buffer)); 1208 mStreams[i].dump(fd); 1209 } 1210 1211 snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n", 1212 (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory); 1213 write(fd, buffer, strlen(buffer)); 1214 1215 snprintf(buffer, SIZE, "Registered effects:\n"); 1216 write(fd, buffer, strlen(buffer)); 1217 for (size_t i = 0; i < mEffects.size(); i++) { 1218 snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i)); 1219 write(fd, buffer, strlen(buffer)); 1220 mEffects.valueAt(i)->dump(fd); 1221 } 1222 1223 1224 return NO_ERROR; 1225 } 1226 1227 // ---------------------------------------------------------------------------- 1228 // AudioPolicyManagerBase 1229 // ---------------------------------------------------------------------------- 1230 1231 AudioPolicyManagerBase::AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface) 1232 : 1233 #ifdef AUDIO_POLICY_TEST 1234 Thread(false), 1235 #endif //AUDIO_POLICY_TEST 1236 mPrimaryOutput((audio_io_handle_t)0), 1237 mAvailableOutputDevices((audio_devices_t)0), 1238 mPhoneState(AudioSystem::MODE_NORMAL), 1239 mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f), 1240 mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0), 1241 mA2dpSuspended(false), mHasA2dp(false), mHasUsb(false) 1242 { 1243 mpClientInterface = clientInterface; 1244 1245 for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) { 1246 mForceUse[i] = AudioSystem::FORCE_NONE; 1247 } 1248 1249 initializeVolumeCurves(); 1250 1251 mA2dpDeviceAddress = String8(""); 1252 mScoDeviceAddress = String8(""); 1253 mUsbCardAndDevice = String8(""); 1254 1255 if (loadAudioPolicyConfig(AUDIO_POLICY_VENDOR_CONFIG_FILE) != NO_ERROR) { 1256 if (loadAudioPolicyConfig(AUDIO_POLICY_CONFIG_FILE) != NO_ERROR) { 1257 ALOGE("could not load audio policy configuration file, setting defaults"); 1258 defaultAudioPolicyConfig(); 1259 } 1260 } 1261 1262 // open all output streams needed to access attached devices 1263 for (size_t i = 0; i < mHwModules.size(); i++) { 1264 mHwModules[i]->mHandle = mpClientInterface->loadHwModule(mHwModules[i]->mName); 1265 if (mHwModules[i]->mHandle == 0) { 1266 ALOGW("could not open HW module %s", mHwModules[i]->mName); 1267 continue; 1268 } 1269 // open all output streams needed to access attached devices 1270 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 1271 { 1272 const IOProfile *outProfile = mHwModules[i]->mOutputProfiles[j]; 1273 1274 if (outProfile->mSupportedDevices & mAttachedOutputDevices) { 1275 AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(outProfile); 1276 outputDesc->mDevice = (audio_devices_t)(mDefaultOutputDevice & 1277 outProfile->mSupportedDevices); 1278 audio_io_handle_t output = mpClientInterface->openOutput( 1279 outProfile->mModule->mHandle, 1280 &outputDesc->mDevice, 1281 &outputDesc->mSamplingRate, 1282 &outputDesc->mFormat, 1283 &outputDesc->mChannelMask, 1284 &outputDesc->mLatency, 1285 outputDesc->mFlags); 1286 if (output == 0) { 1287 delete outputDesc; 1288 } else { 1289 mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices | 1290 (outProfile->mSupportedDevices & mAttachedOutputDevices)); 1291 if (mPrimaryOutput == 0 && 1292 outProfile->mFlags & AUDIO_OUTPUT_FLAG_PRIMARY) { 1293 mPrimaryOutput = output; 1294 } 1295 addOutput(output, outputDesc); 1296 setOutputDevice(output, 1297 (audio_devices_t)(mDefaultOutputDevice & 1298 outProfile->mSupportedDevices), 1299 true); 1300 } 1301 } 1302 } 1303 } 1304 1305 ALOGE_IF((mAttachedOutputDevices & ~mAvailableOutputDevices), 1306 "Not output found for attached devices %08x", 1307 (mAttachedOutputDevices & ~mAvailableOutputDevices)); 1308 1309 ALOGE_IF((mPrimaryOutput == 0), "Failed to open primary output"); 1310 1311 updateDeviceForStrategy(); 1312 1313 #ifdef AUDIO_POLICY_TEST 1314 if (mPrimaryOutput != 0) { 1315 AudioParameter outputCmd = AudioParameter(); 1316 outputCmd.addInt(String8("set_id"), 0); 1317 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 1318 1319 mTestDevice = AudioSystem::DEVICE_OUT_SPEAKER; 1320 mTestSamplingRate = 44100; 1321 mTestFormat = AudioSystem::PCM_16_BIT; 1322 mTestChannels = AudioSystem::CHANNEL_OUT_STEREO; 1323 mTestLatencyMs = 0; 1324 mCurOutput = 0; 1325 mDirectOutput = false; 1326 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 1327 mTestOutputs[i] = 0; 1328 } 1329 1330 const size_t SIZE = 256; 1331 char buffer[SIZE]; 1332 snprintf(buffer, SIZE, "AudioPolicyManagerTest"); 1333 run(buffer, ANDROID_PRIORITY_AUDIO); 1334 } 1335 #endif //AUDIO_POLICY_TEST 1336 } 1337 1338 AudioPolicyManagerBase::~AudioPolicyManagerBase() 1339 { 1340 #ifdef AUDIO_POLICY_TEST 1341 exit(); 1342 #endif //AUDIO_POLICY_TEST 1343 for (size_t i = 0; i < mOutputs.size(); i++) { 1344 mpClientInterface->closeOutput(mOutputs.keyAt(i)); 1345 delete mOutputs.valueAt(i); 1346 } 1347 for (size_t i = 0; i < mInputs.size(); i++) { 1348 mpClientInterface->closeInput(mInputs.keyAt(i)); 1349 delete mInputs.valueAt(i); 1350 } 1351 for (size_t i = 0; i < mHwModules.size(); i++) { 1352 delete mHwModules[i]; 1353 } 1354 } 1355 1356 status_t AudioPolicyManagerBase::initCheck() 1357 { 1358 return (mPrimaryOutput == 0) ? NO_INIT : NO_ERROR; 1359 } 1360 1361 #ifdef AUDIO_POLICY_TEST 1362 bool AudioPolicyManagerBase::threadLoop() 1363 { 1364 ALOGV("entering threadLoop()"); 1365 while (!exitPending()) 1366 { 1367 String8 command; 1368 int valueInt; 1369 String8 value; 1370 1371 Mutex::Autolock _l(mLock); 1372 mWaitWorkCV.waitRelative(mLock, milliseconds(50)); 1373 1374 command = mpClientInterface->getParameters(0, String8("test_cmd_policy")); 1375 AudioParameter param = AudioParameter(command); 1376 1377 if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR && 1378 valueInt != 0) { 1379 ALOGV("Test command %s received", command.string()); 1380 String8 target; 1381 if (param.get(String8("target"), target) != NO_ERROR) { 1382 target = "Manager"; 1383 } 1384 if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) { 1385 param.remove(String8("test_cmd_policy_output")); 1386 mCurOutput = valueInt; 1387 } 1388 if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) { 1389 param.remove(String8("test_cmd_policy_direct")); 1390 if (value == "false") { 1391 mDirectOutput = false; 1392 } else if (value == "true") { 1393 mDirectOutput = true; 1394 } 1395 } 1396 if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) { 1397 param.remove(String8("test_cmd_policy_input")); 1398 mTestInput = valueInt; 1399 } 1400 1401 if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) { 1402 param.remove(String8("test_cmd_policy_format")); 1403 int format = AudioSystem::INVALID_FORMAT; 1404 if (value == "PCM 16 bits") { 1405 format = AudioSystem::PCM_16_BIT; 1406 } else if (value == "PCM 8 bits") { 1407 format = AudioSystem::PCM_8_BIT; 1408 } else if (value == "Compressed MP3") { 1409 format = AudioSystem::MP3; 1410 } 1411 if (format != AudioSystem::INVALID_FORMAT) { 1412 if (target == "Manager") { 1413 mTestFormat = format; 1414 } else if (mTestOutputs[mCurOutput] != 0) { 1415 AudioParameter outputParam = AudioParameter(); 1416 outputParam.addInt(String8("format"), format); 1417 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 1418 } 1419 } 1420 } 1421 if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) { 1422 param.remove(String8("test_cmd_policy_channels")); 1423 int channels = 0; 1424 1425 if (value == "Channels Stereo") { 1426 channels = AudioSystem::CHANNEL_OUT_STEREO; 1427 } else if (value == "Channels Mono") { 1428 channels = AudioSystem::CHANNEL_OUT_MONO; 1429 } 1430 if (channels != 0) { 1431 if (target == "Manager") { 1432 mTestChannels = channels; 1433 } else if (mTestOutputs[mCurOutput] != 0) { 1434 AudioParameter outputParam = AudioParameter(); 1435 outputParam.addInt(String8("channels"), channels); 1436 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 1437 } 1438 } 1439 } 1440 if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) { 1441 param.remove(String8("test_cmd_policy_sampleRate")); 1442 if (valueInt >= 0 && valueInt <= 96000) { 1443 int samplingRate = valueInt; 1444 if (target == "Manager") { 1445 mTestSamplingRate = samplingRate; 1446 } else if (mTestOutputs[mCurOutput] != 0) { 1447 AudioParameter outputParam = AudioParameter(); 1448 outputParam.addInt(String8("sampling_rate"), samplingRate); 1449 mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); 1450 } 1451 } 1452 } 1453 1454 if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) { 1455 param.remove(String8("test_cmd_policy_reopen")); 1456 1457 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput); 1458 mpClientInterface->closeOutput(mPrimaryOutput); 1459 1460 audio_module_handle_t moduleHandle = outputDesc->mModule->mHandle; 1461 1462 delete mOutputs.valueFor(mPrimaryOutput); 1463 mOutputs.removeItem(mPrimaryOutput); 1464 1465 AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(NULL); 1466 outputDesc->mDevice = (uint32_t)AudioSystem::DEVICE_OUT_SPEAKER; 1467 mPrimaryOutput = mpClientInterface->openOutput(moduleHandle, 1468 &outputDesc->mDevice, 1469 &outputDesc->mSamplingRate, 1470 &outputDesc->mFormat, 1471 &outputDesc->mChannelMask, 1472 &outputDesc->mLatency, 1473 outputDesc->mFlags); 1474 if (mPrimaryOutput == 0) { 1475 ALOGE("Failed to reopen hardware output stream, samplingRate: %d, format %d, channels %d", 1476 outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannelMask); 1477 } else { 1478 AudioParameter outputCmd = AudioParameter(); 1479 outputCmd.addInt(String8("set_id"), 0); 1480 mpClientInterface->setParameters(mPrimaryOutput, outputCmd.toString()); 1481 addOutput(mPrimaryOutput, outputDesc); 1482 } 1483 } 1484 1485 1486 mpClientInterface->setParameters(0, String8("test_cmd_policy=")); 1487 } 1488 } 1489 return false; 1490 } 1491 1492 void AudioPolicyManagerBase::exit() 1493 { 1494 { 1495 AutoMutex _l(mLock); 1496 requestExit(); 1497 mWaitWorkCV.signal(); 1498 } 1499 requestExitAndWait(); 1500 } 1501 1502 int AudioPolicyManagerBase::testOutputIndex(audio_io_handle_t output) 1503 { 1504 for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { 1505 if (output == mTestOutputs[i]) return i; 1506 } 1507 return 0; 1508 } 1509 #endif //AUDIO_POLICY_TEST 1510 1511 // --- 1512 1513 void AudioPolicyManagerBase::addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc) 1514 { 1515 outputDesc->mId = id; 1516 mOutputs.add(id, outputDesc); 1517 } 1518 1519 1520 status_t AudioPolicyManagerBase::checkOutputsForDevice(audio_devices_t device, 1521 AudioSystem::device_connection_state state, 1522 SortedVector<audio_io_handle_t>& outputs) 1523 { 1524 AudioOutputDescriptor *desc; 1525 1526 if (state == AudioSystem::DEVICE_STATE_AVAILABLE) { 1527 // first list already open outputs that can be routed to this device 1528 for (size_t i = 0; i < mOutputs.size(); i++) { 1529 desc = mOutputs.valueAt(i); 1530 if (!desc->isDuplicated() && (desc->mProfile->mSupportedDevices & device)) { 1531 ALOGV("checkOutputsForDevice(): adding opened output %d", mOutputs.keyAt(i)); 1532 outputs.add(mOutputs.keyAt(i)); 1533 } 1534 } 1535 // then look for output profiles that can be routed to this device 1536 SortedVector<IOProfile *> profiles; 1537 for (size_t i = 0; i < mHwModules.size(); i++) 1538 { 1539 if (mHwModules[i]->mHandle == 0) { 1540 continue; 1541 } 1542 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 1543 { 1544 if (mHwModules[i]->mOutputProfiles[j]->mSupportedDevices & device) { 1545 ALOGV("checkOutputsForDevice(): adding profile %d from module %d", j, i); 1546 profiles.add(mHwModules[i]->mOutputProfiles[j]); 1547 } 1548 } 1549 } 1550 1551 if (profiles.isEmpty() && outputs.isEmpty()) { 1552 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 1553 return BAD_VALUE; 1554 } 1555 1556 // open outputs for matching profiles if needed. Direct outputs are also opened to 1557 // query for dynamic parameters and will be closed later by setDeviceConnectionState() 1558 for (ssize_t profile_index = 0; profile_index < (ssize_t)profiles.size(); profile_index++) { 1559 IOProfile *profile = profiles[profile_index]; 1560 1561 // nothing to do if one output is already opened for this profile 1562 size_t j; 1563 for (j = 0; j < outputs.size(); j++) { 1564 desc = mOutputs.valueAt(j); 1565 if (!desc->isDuplicated() && desc->mProfile == profile) { 1566 break; 1567 } 1568 } 1569 if (j != outputs.size()) { 1570 continue; 1571 } 1572 1573 ALOGV("opening output for device %08x", device); 1574 desc = new AudioOutputDescriptor(profile); 1575 desc->mDevice = device; 1576 audio_io_handle_t output = mpClientInterface->openOutput(profile->mModule->mHandle, 1577 &desc->mDevice, 1578 &desc->mSamplingRate, 1579 &desc->mFormat, 1580 &desc->mChannelMask, 1581 &desc->mLatency, 1582 desc->mFlags); 1583 if (output != 0) { 1584 if (desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) { 1585 String8 reply; 1586 char *value; 1587 if (profile->mSamplingRates[0] == 0) { 1588 reply = mpClientInterface->getParameters(output, 1589 String8(AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES)); 1590 ALOGV("checkOutputsForDevice() direct output sup sampling rates %s", 1591 reply.string()); 1592 value = strpbrk((char *)reply.string(), "="); 1593 if (value != NULL) { 1594 loadSamplingRates(value, profile); 1595 } 1596 } 1597 if (profile->mFormats[0] == 0) { 1598 reply = mpClientInterface->getParameters(output, 1599 String8(AUDIO_PARAMETER_STREAM_SUP_FORMATS)); 1600 ALOGV("checkOutputsForDevice() direct output sup formats %s", 1601 reply.string()); 1602 value = strpbrk((char *)reply.string(), "="); 1603 if (value != NULL) { 1604 loadFormats(value, profile); 1605 } 1606 } 1607 if (profile->mChannelMasks[0] == 0) { 1608 reply = mpClientInterface->getParameters(output, 1609 String8(AUDIO_PARAMETER_STREAM_SUP_CHANNELS)); 1610 ALOGV("checkOutputsForDevice() direct output sup channel masks %s", 1611 reply.string()); 1612 value = strpbrk((char *)reply.string(), "="); 1613 if (value != NULL) { 1614 loadOutChannels(value + 1, profile); 1615 } 1616 } 1617 if (((profile->mSamplingRates[0] == 0) && 1618 (profile->mSamplingRates.size() < 2)) || 1619 ((profile->mFormats[0] == 0) && 1620 (profile->mFormats.size() < 2)) || 1621 ((profile->mFormats[0] == 0) && 1622 (profile->mChannelMasks.size() < 2))) { 1623 ALOGW("checkOutputsForDevice() direct output missing param"); 1624 output = 0; 1625 } else { 1626 addOutput(output, desc); 1627 } 1628 } else { 1629 audio_io_handle_t duplicatedOutput = 0; 1630 // add output descriptor 1631 addOutput(output, desc); 1632 // set initial stream volume for device 1633 applyStreamVolumes(output, device, 0, true); 1634 1635 //TODO: configure audio effect output stage here 1636 1637 // open a duplicating output thread for the new output and the primary output 1638 duplicatedOutput = mpClientInterface->openDuplicateOutput(output, 1639 mPrimaryOutput); 1640 if (duplicatedOutput != 0) { 1641 // add duplicated output descriptor 1642 AudioOutputDescriptor *dupOutputDesc = new AudioOutputDescriptor(NULL); 1643 dupOutputDesc->mOutput1 = mOutputs.valueFor(mPrimaryOutput); 1644 dupOutputDesc->mOutput2 = mOutputs.valueFor(output); 1645 dupOutputDesc->mSamplingRate = desc->mSamplingRate; 1646 dupOutputDesc->mFormat = desc->mFormat; 1647 dupOutputDesc->mChannelMask = desc->mChannelMask; 1648 dupOutputDesc->mLatency = desc->mLatency; 1649 addOutput(duplicatedOutput, dupOutputDesc); 1650 applyStreamVolumes(duplicatedOutput, device, 0, true); 1651 } else { 1652 ALOGW("checkOutputsForDevice() could not open dup output for %d and %d", 1653 mPrimaryOutput, output); 1654 mpClientInterface->closeOutput(output); 1655 mOutputs.removeItem(output); 1656 output = 0; 1657 } 1658 } 1659 } 1660 if (output == 0) { 1661 ALOGW("checkOutputsForDevice() could not open output for device %x", device); 1662 delete desc; 1663 profiles.removeAt(profile_index); 1664 profile_index--; 1665 } else { 1666 outputs.add(output); 1667 ALOGV("checkOutputsForDevice(): adding output %d", output); 1668 } 1669 } 1670 1671 if (profiles.isEmpty()) { 1672 ALOGW("checkOutputsForDevice(): No output available for device %04x", device); 1673 return BAD_VALUE; 1674 } 1675 } else { 1676 // check if one opened output is not needed any more after disconnecting one device 1677 for (size_t i = 0; i < mOutputs.size(); i++) { 1678 desc = mOutputs.valueAt(i); 1679 if (!desc->isDuplicated() && 1680 !(desc->mProfile->mSupportedDevices & mAvailableOutputDevices)) { 1681 ALOGV("checkOutputsForDevice(): disconnecting adding output %d", mOutputs.keyAt(i)); 1682 outputs.add(mOutputs.keyAt(i)); 1683 } 1684 } 1685 for (size_t i = 0; i < mHwModules.size(); i++) 1686 { 1687 if (mHwModules[i]->mHandle == 0) { 1688 continue; 1689 } 1690 for (size_t j = 0; j < mHwModules[i]->mOutputProfiles.size(); j++) 1691 { 1692 IOProfile *profile = mHwModules[i]->mOutputProfiles[j]; 1693 if ((profile->mSupportedDevices & device) && 1694 (profile->mFlags & AUDIO_OUTPUT_FLAG_DIRECT)) { 1695 ALOGV("checkOutputsForDevice(): clearing direct output profile %d on module %d", 1696 j, i); 1697 if (profile->mSamplingRates[0] == 0) { 1698 profile->mSamplingRates.clear(); 1699 profile->mSamplingRates.add(0); 1700 } 1701 if (profile->mFormats[0] == 0) { 1702 profile->mFormats.clear(); 1703 profile->mFormats.add((audio_format_t)0); 1704 } 1705 if (profile->mChannelMasks[0] == 0) { 1706 profile->mChannelMasks.clear(); 1707 profile->mChannelMasks.add((audio_channel_mask_t)0); 1708 } 1709 } 1710 } 1711 } 1712 } 1713 return NO_ERROR; 1714 } 1715 1716 void AudioPolicyManagerBase::closeOutput(audio_io_handle_t output) 1717 { 1718 ALOGV("closeOutput(%d)", output); 1719 1720 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output); 1721 if (outputDesc == NULL) { 1722 ALOGW("closeOutput() unknown output %d", output); 1723 return; 1724 } 1725 1726 // look for duplicated outputs connected to the output being removed. 1727 for (size_t i = 0; i < mOutputs.size(); i++) { 1728 AudioOutputDescriptor *dupOutputDesc = mOutputs.valueAt(i); 1729 if (dupOutputDesc->isDuplicated() && 1730 (dupOutputDesc->mOutput1 == outputDesc || 1731 dupOutputDesc->mOutput2 == outputDesc)) { 1732 AudioOutputDescriptor *outputDesc2; 1733 if (dupOutputDesc->mOutput1 == outputDesc) { 1734 outputDesc2 = dupOutputDesc->mOutput2; 1735 } else { 1736 outputDesc2 = dupOutputDesc->mOutput1; 1737 } 1738 // As all active tracks on duplicated output will be deleted, 1739 // and as they were also referenced on the other output, the reference 1740 // count for their stream type must be adjusted accordingly on 1741 // the other output. 1742 for (int j = 0; j < (int)AudioSystem::NUM_STREAM_TYPES; j++) { 1743 int refCount = dupOutputDesc->mRefCount[j]; 1744 outputDesc2->changeRefCount((AudioSystem::stream_type)j,-refCount); 1745 } 1746 audio_io_handle_t duplicatedOutput = mOutputs.keyAt(i); 1747 ALOGV("closeOutput() closing also duplicated output %d", duplicatedOutput); 1748 1749 mpClientInterface->closeOutput(duplicatedOutput); 1750 delete mOutputs.valueFor(duplicatedOutput); 1751 mOutputs.removeItem(duplicatedOutput); 1752 } 1753 } 1754 1755 AudioParameter param; 1756 param.add(String8("closing"), String8("true")); 1757 mpClientInterface->setParameters(output, param.toString()); 1758 1759 mpClientInterface->closeOutput(output); 1760 delete mOutputs.valueFor(output); 1761 mOutputs.removeItem(output); 1762 } 1763 1764 SortedVector<audio_io_handle_t> AudioPolicyManagerBase::getOutputsForDevice(audio_devices_t device) 1765 { 1766 SortedVector<audio_io_handle_t> outputs; 1767 1768 ALOGVV("getOutputsForDevice() device %04x", device); 1769 for (size_t i = 0; i < mOutputs.size(); i++) { 1770 ALOGVV("output %d isDuplicated=%d device=%04x", 1771 i, mOutputs.valueAt(i)->isDuplicated(), mOutputs.valueAt(i)->supportedDevices()); 1772 if ((device & mOutputs.valueAt(i)->supportedDevices()) == device) { 1773 ALOGVV("getOutputsForDevice() found output %d", mOutputs.keyAt(i)); 1774 outputs.add(mOutputs.keyAt(i)); 1775 } 1776 } 1777 return outputs; 1778 } 1779 1780 bool AudioPolicyManagerBase::vectorsEqual(SortedVector<audio_io_handle_t>& outputs1, 1781 SortedVector<audio_io_handle_t>& outputs2) 1782 { 1783 if (outputs1.size() != outputs2.size()) { 1784 return false; 1785 } 1786 for (size_t i = 0; i < outputs1.size(); i++) { 1787 if (outputs1[i] != outputs2[i]) { 1788 return false; 1789 } 1790 } 1791 return true; 1792 } 1793 1794 void AudioPolicyManagerBase::checkOutputForStrategy(routing_strategy strategy) 1795 { 1796 audio_devices_t oldDevice = getDeviceForStrategy(strategy, true /*fromCache*/); 1797 audio_devices_t newDevice = getDeviceForStrategy(strategy, false /*fromCache*/); 1798 SortedVector<audio_io_handle_t> srcOutputs = getOutputsForDevice(oldDevice); 1799 SortedVector<audio_io_handle_t> dstOutputs = getOutputsForDevice(newDevice); 1800 1801 if (!vectorsEqual(srcOutputs,dstOutputs)) { 1802 ALOGV("checkOutputForStrategy() strategy %d, moving from output %d to output %d", 1803 strategy, srcOutputs[0], dstOutputs[0]); 1804 // mute strategy while moving tracks from one output to another 1805 for (size_t i = 0; i < srcOutputs.size(); i++) { 1806 AudioOutputDescriptor *desc = mOutputs.valueFor(srcOutputs[i]); 1807 if (desc->strategyRefCount(strategy) != 0) { 1808 setStrategyMute(strategy, true, srcOutputs[i]); 1809 setStrategyMute(strategy, false, srcOutputs[i], MUTE_TIME_MS, newDevice); 1810 } 1811 } 1812 1813 // Move effects associated to this strategy from previous output to new output 1814 if (strategy == STRATEGY_MEDIA) { 1815 int outIdx = 0; 1816 for (size_t i = 0; i < dstOutputs.size(); i++) { 1817 AudioOutputDescriptor *desc = mOutputs.valueFor(dstOutputs[i]); 1818 if (desc->mFlags & AUDIO_OUTPUT_FLAG_DEEP_BUFFER) { 1819 outIdx = i; 1820 } 1821 } 1822 SortedVector<audio_io_handle_t> moved; 1823 for (size_t i = 0; i < mEffects.size(); i++) { 1824 EffectDescriptor *desc = mEffects.valueAt(i); 1825 if (desc->mSession == AUDIO_SESSION_OUTPUT_MIX && 1826 desc->mIo != dstOutputs[outIdx]) { 1827 if (moved.indexOf(desc->mIo) < 0) { 1828 ALOGV("checkOutputForStrategy() moving effect %d to output %d", 1829 mEffects.keyAt(i), dstOutputs[outIdx]); 1830 mpClientInterface->moveEffects(AUDIO_SESSION_OUTPUT_MIX, desc->mIo, 1831 dstOutputs[outIdx]); 1832 moved.add(desc->mIo); 1833 } 1834 desc->mIo = dstOutputs[outIdx]; 1835 } 1836 } 1837 } 1838 // Move tracks associated to this strategy from previous output to new output 1839 for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) { 1840 if (getStrategy((AudioSystem::stream_type)i) == strategy) { 1841 //FIXME see fixme on name change 1842 mpClientInterface->setStreamOutput((AudioSystem::stream_type)i, 1843 dstOutputs[0] /* ignored */); 1844 } 1845 } 1846 } 1847 } 1848 1849 void AudioPolicyManagerBase::checkOutputForAllStrategies() 1850 { 1851 checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE); 1852 checkOutputForStrategy(STRATEGY_PHONE); 1853 checkOutputForStrategy(STRATEGY_SONIFICATION); 1854 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 1855 checkOutputForStrategy(STRATEGY_MEDIA); 1856 checkOutputForStrategy(STRATEGY_DTMF); 1857 } 1858 1859 audio_io_handle_t AudioPolicyManagerBase::getA2dpOutput() 1860 { 1861 if (!mHasA2dp) { 1862 return 0; 1863 } 1864 1865 for (size_t i = 0; i < mOutputs.size(); i++) { 1866 AudioOutputDescriptor *outputDesc = mOutputs.valueAt(i); 1867 if (!outputDesc->isDuplicated() && outputDesc->device() & AUDIO_DEVICE_OUT_ALL_A2DP) { 1868 return mOutputs.keyAt(i); 1869 } 1870 } 1871 1872 return 0; 1873 } 1874 1875 void AudioPolicyManagerBase::checkA2dpSuspend() 1876 { 1877 if (!mHasA2dp) { 1878 return; 1879 } 1880 audio_io_handle_t a2dpOutput = getA2dpOutput(); 1881 if (a2dpOutput == 0) { 1882 return; 1883 } 1884 1885 // suspend A2DP output if: 1886 // (NOT already suspended) && 1887 // ((SCO device is connected && 1888 // (forced usage for communication || for record is SCO))) || 1889 // (phone state is ringing || in call) 1890 // 1891 // restore A2DP output if: 1892 // (Already suspended) && 1893 // ((SCO device is NOT connected || 1894 // (forced usage NOT for communication && NOT for record is SCO))) && 1895 // (phone state is NOT ringing && NOT in call) 1896 // 1897 if (mA2dpSuspended) { 1898 if (((mScoDeviceAddress == "") || 1899 ((mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO) && 1900 (mForceUse[AudioSystem::FOR_RECORD] != AudioSystem::FORCE_BT_SCO))) && 1901 ((mPhoneState != AudioSystem::MODE_IN_CALL) && 1902 (mPhoneState != AudioSystem::MODE_RINGTONE))) { 1903 1904 mpClientInterface->restoreOutput(a2dpOutput); 1905 mA2dpSuspended = false; 1906 } 1907 } else { 1908 if (((mScoDeviceAddress != "") && 1909 ((mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) || 1910 (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO))) || 1911 ((mPhoneState == AudioSystem::MODE_IN_CALL) || 1912 (mPhoneState == AudioSystem::MODE_RINGTONE))) { 1913 1914 mpClientInterface->suspendOutput(a2dpOutput); 1915 mA2dpSuspended = true; 1916 } 1917 } 1918 } 1919 1920 audio_devices_t AudioPolicyManagerBase::getNewDevice(audio_io_handle_t output, bool fromCache) 1921 { 1922 audio_devices_t device = (audio_devices_t)0; 1923 1924 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output); 1925 // check the following by order of priority to request a routing change if necessary: 1926 // 1: the strategy enforced audible is active on the output: 1927 // use device for strategy enforced audible 1928 // 2: we are in call or the strategy phone is active on the output: 1929 // use device for strategy phone 1930 // 3: the strategy sonification is active on the output: 1931 // use device for strategy sonification 1932 // 4: the strategy "respectful" sonification is active on the output: 1933 // use device for strategy "respectful" sonification 1934 // 5: the strategy media is active on the output: 1935 // use device for strategy media 1936 // 6: the strategy DTMF is active on the output: 1937 // use device for strategy DTMF 1938 if (outputDesc->isUsedByStrategy(STRATEGY_ENFORCED_AUDIBLE)) { 1939 device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache); 1940 } else if (isInCall() || 1941 outputDesc->isUsedByStrategy(STRATEGY_PHONE)) { 1942 device = getDeviceForStrategy(STRATEGY_PHONE, fromCache); 1943 } else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION)) { 1944 device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache); 1945 } else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION_RESPECTFUL)) { 1946 device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache); 1947 } else if (outputDesc->isUsedByStrategy(STRATEGY_MEDIA)) { 1948 device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache); 1949 } else if (outputDesc->isUsedByStrategy(STRATEGY_DTMF)) { 1950 device = getDeviceForStrategy(STRATEGY_DTMF, fromCache); 1951 } 1952 1953 ALOGV("getNewDevice() selected device %x", device); 1954 return device; 1955 } 1956 1957 uint32_t AudioPolicyManagerBase::getStrategyForStream(AudioSystem::stream_type stream) { 1958 return (uint32_t)getStrategy(stream); 1959 } 1960 1961 audio_devices_t AudioPolicyManagerBase::getDevicesForStream(AudioSystem::stream_type stream) { 1962 audio_devices_t devices; 1963 // By checking the range of stream before calling getStrategy, we avoid 1964 // getStrategy's behavior for invalid streams. getStrategy would do a ALOGE 1965 // and then return STRATEGY_MEDIA, but we want to return the empty set. 1966 if (stream < (AudioSystem::stream_type) 0 || stream >= AudioSystem::NUM_STREAM_TYPES) { 1967 devices = (audio_devices_t)0; 1968 } else { 1969 AudioPolicyManagerBase::routing_strategy strategy = getStrategy(stream); 1970 devices = getDeviceForStrategy(strategy, true /*fromCache*/); 1971 } 1972 return devices; 1973 } 1974 1975 AudioPolicyManagerBase::routing_strategy AudioPolicyManagerBase::getStrategy( 1976 AudioSystem::stream_type stream) { 1977 // stream to strategy mapping 1978 switch (stream) { 1979 case AudioSystem::VOICE_CALL: 1980 case AudioSystem::BLUETOOTH_SCO: 1981 return STRATEGY_PHONE; 1982 case AudioSystem::RING: 1983 case AudioSystem::ALARM: 1984 return STRATEGY_SONIFICATION; 1985 case AudioSystem::NOTIFICATION: 1986 return STRATEGY_SONIFICATION_RESPECTFUL; 1987 case AudioSystem::DTMF: 1988 return STRATEGY_DTMF; 1989 default: 1990 ALOGE("unknown stream type"); 1991 case AudioSystem::SYSTEM: 1992 // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs 1993 // while key clicks are played produces a poor result 1994 case AudioSystem::TTS: 1995 case AudioSystem::MUSIC: 1996 return STRATEGY_MEDIA; 1997 case AudioSystem::ENFORCED_AUDIBLE: 1998 return STRATEGY_ENFORCED_AUDIBLE; 1999 } 2000 } 2001 2002 void AudioPolicyManagerBase::handleNotificationRoutingForStream(AudioSystem::stream_type stream) { 2003 switch(stream) { 2004 case AudioSystem::MUSIC: 2005 checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL); 2006 updateDeviceForStrategy(); 2007 break; 2008 default: 2009 break; 2010 } 2011 } 2012 2013 audio_devices_t AudioPolicyManagerBase::getDeviceForStrategy(routing_strategy strategy, 2014 bool fromCache) 2015 { 2016 uint32_t device = 0; 2017 2018 if (fromCache) { 2019 ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x", 2020 strategy, mDeviceForStrategy[strategy]); 2021 return mDeviceForStrategy[strategy]; 2022 } 2023 2024 switch (strategy) { 2025 2026 case STRATEGY_SONIFICATION_RESPECTFUL: 2027 if (isInCall()) { 2028 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 2029 } else if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) { 2030 // while media is playing (or has recently played), use the same device 2031 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 2032 } else { 2033 // when media is not playing anymore, fall back on the sonification behavior 2034 device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/); 2035 } 2036 2037 break; 2038 2039 case STRATEGY_DTMF: 2040 if (!isInCall()) { 2041 // when off call, DTMF strategy follows the same rules as MEDIA strategy 2042 device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/); 2043 break; 2044 } 2045 // when in call, DTMF and PHONE strategies follow the same rules 2046 // FALL THROUGH 2047 2048 case STRATEGY_PHONE: 2049 // for phone strategy, we first consider the forced use and then the available devices by order 2050 // of priority 2051 switch (mForceUse[AudioSystem::FOR_COMMUNICATION]) { 2052 case AudioSystem::FORCE_BT_SCO: 2053 if (!isInCall() || strategy != STRATEGY_DTMF) { 2054 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT; 2055 if (device) break; 2056 } 2057 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET; 2058 if (device) break; 2059 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO; 2060 if (device) break; 2061 // if SCO device is requested but no SCO device is available, fall back to default case 2062 // FALL THROUGH 2063 2064 default: // FORCE_NONE 2065 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP 2066 if (mHasA2dp && !isInCall() && 2067 (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) && 2068 (getA2dpOutput() != 0) && !mA2dpSuspended) { 2069 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP; 2070 if (device) break; 2071 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 2072 if (device) break; 2073 } 2074 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADPHONE; 2075 if (device) break; 2076 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET; 2077 if (device) break; 2078 device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY; 2079 if (device) break; 2080 device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE; 2081 if (device) break; 2082 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET; 2083 if (device) break; 2084 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL; 2085 if (device) break; 2086 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET; 2087 if (device) break; 2088 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_EARPIECE; 2089 if (device) break; 2090 device = mDefaultOutputDevice; 2091 if (device == 0) { 2092 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE"); 2093 } 2094 break; 2095 2096 case AudioSystem::FORCE_SPEAKER: 2097 // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to 2098 // A2DP speaker when forcing to speaker output 2099 if (mHasA2dp && !isInCall() && 2100 (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) && 2101 (getA2dpOutput() != 0) && !mA2dpSuspended) { 2102 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 2103 if (device) break; 2104 } 2105 device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY; 2106 if (device) break; 2107 device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE; 2108 if (device) break; 2109 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET; 2110 if (device) break; 2111 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL; 2112 if (device) break; 2113 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET; 2114 if (device) break; 2115 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER; 2116 if (device) break; 2117 device = mDefaultOutputDevice; 2118 if (device == 0) { 2119 ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER"); 2120 } 2121 break; 2122 } 2123 break; 2124 2125 case STRATEGY_SONIFICATION: 2126 2127 // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by 2128 // handleIncallSonification(). 2129 if (isInCall()) { 2130 device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/); 2131 break; 2132 } 2133 // FALL THROUGH 2134 2135 case STRATEGY_ENFORCED_AUDIBLE: 2136 // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION 2137 // except: 2138 // - when in call where it doesn't default to STRATEGY_PHONE behavior 2139 // - in countries where not enforced in which case it follows STRATEGY_MEDIA 2140 2141 if (strategy == STRATEGY_SONIFICATION || 2142 !mStreams[AUDIO_STREAM_ENFORCED_AUDIBLE].mCanBeMuted) { 2143 device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER; 2144 if (device == 0) { 2145 ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION"); 2146 } 2147 } 2148 // The second device used for sonification is the same as the device used by media strategy 2149 // FALL THROUGH 2150 2151 case STRATEGY_MEDIA: { 2152 uint32_t device2 = 0; 2153 if (mHasA2dp && (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) && 2154 (getA2dpOutput() != 0) && !mA2dpSuspended) { 2155 device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP; 2156 if (device2 == 0) { 2157 device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; 2158 } 2159 if (device2 == 0) { 2160 device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; 2161 } 2162 } 2163 if (device2 == 0) { 2164 device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADPHONE; 2165 } 2166 if (device2 == 0) { 2167 device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET; 2168 } 2169 if (device2 == 0) { 2170 device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY; 2171 } 2172 if (device2 == 0) { 2173 device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE; 2174 } 2175 if (device2 == 0) { 2176 device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET; 2177 } 2178 if (device2 == 0) { 2179 device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL; 2180 } 2181 if (device2 == 0) { 2182 device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET; 2183 } 2184 if (device2 == 0) { 2185 device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER; 2186 } 2187 2188 // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or 2189 // STRATEGY_ENFORCED_AUDIBLE, 0 otherwise 2190 device |= device2; 2191 if (device) break; 2192 device = mDefaultOutputDevice; 2193 if (device == 0) { 2194 ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA"); 2195 } 2196 } break; 2197 2198 default: 2199 ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy); 2200 break; 2201 } 2202 2203 ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device); 2204 return (audio_devices_t)device; 2205 } 2206 2207 void AudioPolicyManagerBase::updateDeviceForStrategy() 2208 { 2209 for (int i = 0; i < NUM_STRATEGIES; i++) { 2210 mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 2211 } 2212 } 2213 2214 uint32_t AudioPolicyManagerBase::checkDeviceMuteStrategies(AudioOutputDescriptor *outputDesc, 2215 audio_devices_t prevDevice, 2216 uint32_t delayMs) 2217 { 2218 // mute/unmute strategies using an incompatible device combination 2219 // if muting, wait for the audio in pcm buffer to be drained before proceeding 2220 // if unmuting, unmute only after the specified delay 2221 if (outputDesc->isDuplicated()) { 2222 return 0; 2223 } 2224 2225 uint32_t muteWaitMs = 0; 2226 audio_devices_t device = outputDesc->device(); 2227 bool shouldMute = (outputDesc->refCount() != 0) && 2228 (AudioSystem::popCount(device) >= 2); 2229 // temporary mute output if device selection changes to avoid volume bursts due to 2230 // different per device volumes 2231 bool tempMute = (outputDesc->refCount() != 0) && (device != prevDevice); 2232 2233 for (size_t i = 0; i < NUM_STRATEGIES; i++) { 2234 audio_devices_t curDevice = getDeviceForStrategy((routing_strategy)i, false /*fromCache*/); 2235 bool mute = shouldMute && (curDevice & device) && (curDevice != device); 2236 bool doMute = false; 2237 2238 if (mute && !outputDesc->mStrategyMutedByDevice[i]) { 2239 doMute = true; 2240 outputDesc->mStrategyMutedByDevice[i] = true; 2241 } else if (!mute && outputDesc->mStrategyMutedByDevice[i]){ 2242 doMute = true; 2243 outputDesc->mStrategyMutedByDevice[i] = false; 2244 } 2245 if (doMute || tempMute) { 2246 for (size_t j = 0; j < mOutputs.size(); j++) { 2247 AudioOutputDescriptor *desc = mOutputs.valueAt(j); 2248 if ((desc->supportedDevices() & outputDesc->supportedDevices()) == 0) { 2249 continue; 2250 } 2251 audio_io_handle_t curOutput = mOutputs.keyAt(j); 2252 ALOGVV("checkDeviceMuteStrategies() %s strategy %d (curDevice %04x) on output %d", 2253 mute ? "muting" : "unmuting", i, curDevice, curOutput); 2254 setStrategyMute((routing_strategy)i, mute, curOutput, mute ? 0 : delayMs); 2255 if (desc->strategyRefCount((routing_strategy)i) != 0) { 2256 if (tempMute) { 2257 setStrategyMute((routing_strategy)i, true, curOutput); 2258 setStrategyMute((routing_strategy)i, false, curOutput, 2259 desc->latency() * 2, device); 2260 } 2261 if (tempMute || mute) { 2262 if (muteWaitMs < desc->latency()) { 2263 muteWaitMs = desc->latency(); 2264 } 2265 } 2266 } 2267 } 2268 } 2269 } 2270 2271 // FIXME: should not need to double latency if volume could be applied immediately by the 2272 // audioflinger mixer. We must account for the delay between now and the next time 2273 // the audioflinger thread for this output will process a buffer (which corresponds to 2274 // one buffer size, usually 1/2 or 1/4 of the latency). 2275 muteWaitMs *= 2; 2276 // wait for the PCM output buffers to empty before proceeding with the rest of the command 2277 if (muteWaitMs > delayMs) { 2278 muteWaitMs -= delayMs; 2279 usleep(muteWaitMs * 1000); 2280 return muteWaitMs; 2281 } 2282 return 0; 2283 } 2284 2285 uint32_t AudioPolicyManagerBase::setOutputDevice(audio_io_handle_t output, 2286 audio_devices_t device, 2287 bool force, 2288 int delayMs) 2289 { 2290 ALOGV("setOutputDevice() output %d device %04x delayMs %d", output, device, delayMs); 2291 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output); 2292 AudioParameter param; 2293 uint32_t muteWaitMs = 0; 2294 2295 if (outputDesc->isDuplicated()) { 2296 muteWaitMs = setOutputDevice(outputDesc->mOutput1->mId, device, force, delayMs); 2297 muteWaitMs += setOutputDevice(outputDesc->mOutput2->mId, device, force, delayMs); 2298 return muteWaitMs; 2299 } 2300 // filter devices according to output selected 2301 device = (audio_devices_t)(device & outputDesc->mProfile->mSupportedDevices); 2302 2303 audio_devices_t prevDevice = outputDesc->mDevice; 2304 2305 ALOGV("setOutputDevice() prevDevice %04x", prevDevice); 2306 2307 if (device != 0) { 2308 outputDesc->mDevice = device; 2309 } 2310 muteWaitMs = checkDeviceMuteStrategies(outputDesc, prevDevice, delayMs); 2311 2312 // Do not change the routing if: 2313 // - the requested device is 0 2314 // - the requested device is the same as current device and force is not specified. 2315 // Doing this check here allows the caller to call setOutputDevice() without conditions 2316 if ((device == 0 || device == prevDevice) && !force) { 2317 ALOGV("setOutputDevice() setting same device %04x or null device for output %d", device, output); 2318 return muteWaitMs; 2319 } 2320 2321 ALOGV("setOutputDevice() changing device"); 2322 // do the routing 2323 param.addInt(String8(AudioParameter::keyRouting), (int)device); 2324 mpClientInterface->setParameters(output, param.toString(), delayMs); 2325 2326 // update stream volumes according to new device 2327 applyStreamVolumes(output, device, delayMs); 2328 2329 return muteWaitMs; 2330 } 2331 2332 AudioPolicyManagerBase::IOProfile *AudioPolicyManagerBase::getInputProfile(audio_devices_t device, 2333 uint32_t samplingRate, 2334 uint32_t format, 2335 uint32_t channelMask) 2336 { 2337 // Choose an input profile based on the requested capture parameters: select the first available 2338 // profile supporting all requested parameters. 2339 2340 for (size_t i = 0; i < mHwModules.size(); i++) 2341 { 2342 if (mHwModules[i]->mHandle == 0) { 2343 continue; 2344 } 2345 for (size_t j = 0; j < mHwModules[i]->mInputProfiles.size(); j++) 2346 { 2347 IOProfile *profile = mHwModules[i]->mInputProfiles[j]; 2348 if (profile->isCompatibleProfile(device, samplingRate, format, 2349 channelMask,(audio_output_flags_t)0)) { 2350 return profile; 2351 } 2352 } 2353 } 2354 return NULL; 2355 } 2356 2357 audio_devices_t AudioPolicyManagerBase::getDeviceForInputSource(int inputSource) 2358 { 2359 uint32_t device = 0; 2360 2361 switch(inputSource) { 2362 case AUDIO_SOURCE_DEFAULT: 2363 case AUDIO_SOURCE_MIC: 2364 case AUDIO_SOURCE_VOICE_RECOGNITION: 2365 case AUDIO_SOURCE_VOICE_COMMUNICATION: 2366 if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO && 2367 mAvailableInputDevices & AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET) { 2368 device = AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET; 2369 } else if (mAvailableInputDevices & AudioSystem::DEVICE_IN_WIRED_HEADSET) { 2370 device = AudioSystem::DEVICE_IN_WIRED_HEADSET; 2371 } else if (mAvailableInputDevices & AudioSystem::DEVICE_IN_BUILTIN_MIC) { 2372 device = AudioSystem::DEVICE_IN_BUILTIN_MIC; 2373 } 2374 break; 2375 case AUDIO_SOURCE_CAMCORDER: 2376 if (mAvailableInputDevices & AudioSystem::DEVICE_IN_BACK_MIC) { 2377 device = AudioSystem::DEVICE_IN_BACK_MIC; 2378 } else if (mAvailableInputDevices & AudioSystem::DEVICE_IN_BUILTIN_MIC) { 2379 device = AudioSystem::DEVICE_IN_BUILTIN_MIC; 2380 } 2381 break; 2382 case AUDIO_SOURCE_VOICE_UPLINK: 2383 case AUDIO_SOURCE_VOICE_DOWNLINK: 2384 case AUDIO_SOURCE_VOICE_CALL: 2385 if (mAvailableInputDevices & AudioSystem::DEVICE_IN_VOICE_CALL) { 2386 device = AudioSystem::DEVICE_IN_VOICE_CALL; 2387 } 2388 break; 2389 default: 2390 ALOGW("getDeviceForInputSource() invalid input source %d", inputSource); 2391 break; 2392 } 2393 ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device); 2394 return (audio_devices_t)device; 2395 } 2396 2397 audio_io_handle_t AudioPolicyManagerBase::getActiveInput() 2398 { 2399 for (size_t i = 0; i < mInputs.size(); i++) { 2400 if (mInputs.valueAt(i)->mRefCount > 0) { 2401 return mInputs.keyAt(i); 2402 } 2403 } 2404 return 0; 2405 } 2406 2407 2408 audio_devices_t AudioPolicyManagerBase::getDeviceForVolume(audio_devices_t device) 2409 { 2410 if (device == 0) { 2411 // this happens when forcing a route update and no track is active on an output. 2412 // In this case the returned category is not important. 2413 device = AUDIO_DEVICE_OUT_SPEAKER; 2414 } else if (AudioSystem::popCount(device) > 1) { 2415 // Multiple device selection is either: 2416 // - speaker + one other device: give priority to speaker in this case. 2417 // - one A2DP device + another device: happens with duplicated output. In this case 2418 // retain the device on the A2DP output as the other must not correspond to an active 2419 // selection if not the speaker. 2420 if (device & AUDIO_DEVICE_OUT_SPEAKER) { 2421 device = AUDIO_DEVICE_OUT_SPEAKER; 2422 } else { 2423 device = (audio_devices_t)(device & AUDIO_DEVICE_OUT_ALL_A2DP); 2424 } 2425 } 2426 2427 ALOGW_IF(AudioSystem::popCount(device) != 1, 2428 "getDeviceForVolume() invalid device combination: %08x", 2429 device); 2430 2431 return device; 2432 } 2433 2434 AudioPolicyManagerBase::device_category AudioPolicyManagerBase::getDeviceCategory(audio_devices_t device) 2435 { 2436 switch(getDeviceForVolume(device)) { 2437 case AUDIO_DEVICE_OUT_EARPIECE: 2438 return DEVICE_CATEGORY_EARPIECE; 2439 case AUDIO_DEVICE_OUT_WIRED_HEADSET: 2440 case AUDIO_DEVICE_OUT_WIRED_HEADPHONE: 2441 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO: 2442 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET: 2443 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP: 2444 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES: 2445 return DEVICE_CATEGORY_HEADSET; 2446 case AUDIO_DEVICE_OUT_SPEAKER: 2447 case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT: 2448 case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER: 2449 case AUDIO_DEVICE_OUT_AUX_DIGITAL: 2450 case AUDIO_DEVICE_OUT_USB_ACCESSORY: 2451 case AUDIO_DEVICE_OUT_USB_DEVICE: 2452 default: 2453 return DEVICE_CATEGORY_SPEAKER; 2454 } 2455 } 2456 2457 float AudioPolicyManagerBase::volIndexToAmpl(audio_devices_t device, const StreamDescriptor& streamDesc, 2458 int indexInUi) 2459 { 2460 device_category deviceCategory = getDeviceCategory(device); 2461 const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory]; 2462 2463 // the volume index in the UI is relative to the min and max volume indices for this stream type 2464 int nbSteps = 1 + curve[VOLMAX].mIndex - 2465 curve[VOLMIN].mIndex; 2466 int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) / 2467 (streamDesc.mIndexMax - streamDesc.mIndexMin); 2468 2469 // find what part of the curve this index volume belongs to, or if it's out of bounds 2470 int segment = 0; 2471 if (volIdx < curve[VOLMIN].mIndex) { // out of bounds 2472 return 0.0f; 2473 } else if (volIdx < curve[VOLKNEE1].mIndex) { 2474 segment = 0; 2475 } else if (volIdx < curve[VOLKNEE2].mIndex) { 2476 segment = 1; 2477 } else if (volIdx <= curve[VOLMAX].mIndex) { 2478 segment = 2; 2479 } else { // out of bounds 2480 return 1.0f; 2481 } 2482 2483 // linear interpolation in the attenuation table in dB 2484 float decibels = curve[segment].mDBAttenuation + 2485 ((float)(volIdx - curve[segment].mIndex)) * 2486 ( (curve[segment+1].mDBAttenuation - 2487 curve[segment].mDBAttenuation) / 2488 ((float)(curve[segment+1].mIndex - 2489 curve[segment].mIndex)) ); 2490 2491 float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 ) 2492 2493 ALOGVV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f", 2494 curve[segment].mIndex, volIdx, 2495 curve[segment+1].mIndex, 2496 curve[segment].mDBAttenuation, 2497 decibels, 2498 curve[segment+1].mDBAttenuation, 2499 amplification); 2500 2501 return amplification; 2502 } 2503 2504 const AudioPolicyManagerBase::VolumeCurvePoint 2505 AudioPolicyManagerBase::sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { 2506 {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f} 2507 }; 2508 2509 const AudioPolicyManagerBase::VolumeCurvePoint 2510 AudioPolicyManagerBase::sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { 2511 {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f} 2512 }; 2513 2514 const AudioPolicyManagerBase::VolumeCurvePoint 2515 AudioPolicyManagerBase::sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { 2516 {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f} 2517 }; 2518 2519 const AudioPolicyManagerBase::VolumeCurvePoint 2520 AudioPolicyManagerBase::sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { 2521 {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f} 2522 }; 2523 2524 // AUDIO_STREAM_SYSTEM, AUDIO_STREAM_ENFORCED_AUDIBLE and AUDIO_STREAM_DTMF volume tracks 2525 // AUDIO_STREAM_RING on phones and AUDIO_STREAM_MUSIC on tablets (See AudioService.java). 2526 // The range is constrained between -24dB and -6dB over speaker and -30dB and -18dB over headset. 2527 const AudioPolicyManagerBase::VolumeCurvePoint 2528 AudioPolicyManagerBase::sDefaultSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { 2529 {1, -24.0f}, {33, -18.0f}, {66, -12.0f}, {100, -6.0f} 2530 }; 2531 2532 const AudioPolicyManagerBase::VolumeCurvePoint 2533 AudioPolicyManagerBase::sHeadsetSystemVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { 2534 {1, -30.0f}, {33, -26.0f}, {66, -22.0f}, {100, -18.0f} 2535 }; 2536 2537 const AudioPolicyManagerBase::VolumeCurvePoint 2538 *AudioPolicyManagerBase::sVolumeProfiles[AUDIO_STREAM_CNT] 2539 [AudioPolicyManagerBase::DEVICE_CATEGORY_CNT] = { 2540 { // AUDIO_STREAM_VOICE_CALL 2541 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 2542 sDefaultVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2543 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 2544 }, 2545 { // AUDIO_STREAM_SYSTEM 2546 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 2547 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2548 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE 2549 }, 2550 { // AUDIO_STREAM_RING 2551 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 2552 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2553 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 2554 }, 2555 { // AUDIO_STREAM_MUSIC 2556 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 2557 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2558 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE 2559 }, 2560 { // AUDIO_STREAM_ALARM 2561 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 2562 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2563 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 2564 }, 2565 { // AUDIO_STREAM_NOTIFICATION 2566 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 2567 sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2568 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 2569 }, 2570 { // AUDIO_STREAM_BLUETOOTH_SCO 2571 sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET 2572 sDefaultVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2573 sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE 2574 }, 2575 { // AUDIO_STREAM_ENFORCED_AUDIBLE 2576 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 2577 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2578 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE 2579 }, 2580 { // AUDIO_STREAM_DTMF 2581 sHeadsetSystemVolumeCurve, // DEVICE_CATEGORY_HEADSET 2582 sDefaultSystemVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2583 sDefaultSystemVolumeCurve // DEVICE_CATEGORY_EARPIECE 2584 }, 2585 { // AUDIO_STREAM_TTS 2586 sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET 2587 sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER 2588 sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE 2589 }, 2590 }; 2591 2592 void AudioPolicyManagerBase::initializeVolumeCurves() 2593 { 2594 for (int i = 0; i < AUDIO_STREAM_CNT; i++) { 2595 for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { 2596 mStreams[i].mVolumeCurve[j] = 2597 sVolumeProfiles[i][j]; 2598 } 2599 } 2600 } 2601 2602 float AudioPolicyManagerBase::computeVolume(int stream, 2603 int index, 2604 audio_io_handle_t output, 2605 audio_devices_t device) 2606 { 2607 float volume = 1.0; 2608 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output); 2609 StreamDescriptor &streamDesc = mStreams[stream]; 2610 2611 if (device == 0) { 2612 device = outputDesc->device(); 2613 } 2614 2615 // if volume is not 0 (not muted), force media volume to max on digital output 2616 if (stream == AudioSystem::MUSIC && 2617 index != mStreams[stream].mIndexMin && 2618 (device == AUDIO_DEVICE_OUT_AUX_DIGITAL || 2619 device == AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET || 2620 device == AUDIO_DEVICE_OUT_USB_ACCESSORY || 2621 device == AUDIO_DEVICE_OUT_USB_DEVICE)) { 2622 return 1.0; 2623 } 2624 2625 volume = volIndexToAmpl(device, streamDesc, index); 2626 2627 // if a headset is connected, apply the following rules to ring tones and notifications 2628 // to avoid sound level bursts in user's ears: 2629 // - always attenuate ring tones and notifications volume by 6dB 2630 // - if music is playing, always limit the volume to current music volume, 2631 // with a minimum threshold at -36dB so that notification is always perceived. 2632 const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream); 2633 if ((device & (AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP | 2634 AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | 2635 AudioSystem::DEVICE_OUT_WIRED_HEADSET | 2636 AudioSystem::DEVICE_OUT_WIRED_HEADPHONE)) && 2637 ((stream_strategy == STRATEGY_SONIFICATION) 2638 || (stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL) 2639 || (stream == AudioSystem::SYSTEM)) && 2640 streamDesc.mCanBeMuted) { 2641 volume *= SONIFICATION_HEADSET_VOLUME_FACTOR; 2642 // when the phone is ringing we must consider that music could have been paused just before 2643 // by the music application and behave as if music was active if the last music track was 2644 // just stopped 2645 if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_HEADSET_MUSIC_DELAY) || 2646 mLimitRingtoneVolume) { 2647 float musicVol = computeVolume(AudioSystem::MUSIC, 2648 mStreams[AudioSystem::MUSIC].getVolumeIndex(device), 2649 output, 2650 device); 2651 float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ? 2652 musicVol : SONIFICATION_HEADSET_VOLUME_MIN; 2653 if (volume > minVol) { 2654 volume = minVol; 2655 ALOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol); 2656 } 2657 } 2658 } 2659 2660 return volume; 2661 } 2662 2663 status_t AudioPolicyManagerBase::checkAndSetVolume(int stream, 2664 int index, 2665 audio_io_handle_t output, 2666 audio_devices_t device, 2667 int delayMs, 2668 bool force) 2669 { 2670 2671 // do not change actual stream volume if the stream is muted 2672 if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) { 2673 ALOGVV("checkAndSetVolume() stream %d muted count %d", 2674 stream, mOutputs.valueFor(output)->mMuteCount[stream]); 2675 return NO_ERROR; 2676 } 2677 2678 // do not change in call volume if bluetooth is connected and vice versa 2679 if ((stream == AudioSystem::VOICE_CALL && mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) || 2680 (stream == AudioSystem::BLUETOOTH_SCO && mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO)) { 2681 ALOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm", 2682 stream, mForceUse[AudioSystem::FOR_COMMUNICATION]); 2683 return INVALID_OPERATION; 2684 } 2685 2686 float volume = computeVolume(stream, index, output, device); 2687 // We actually change the volume if: 2688 // - the float value returned by computeVolume() changed 2689 // - the force flag is set 2690 if (volume != mOutputs.valueFor(output)->mCurVolume[stream] || 2691 force) { 2692 mOutputs.valueFor(output)->mCurVolume[stream] = volume; 2693 ALOGVV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs); 2694 if (stream == AudioSystem::VOICE_CALL || 2695 stream == AudioSystem::DTMF || 2696 stream == AudioSystem::BLUETOOTH_SCO) { 2697 // offset value to reflect actual hardware volume that never reaches 0 2698 // 1% corresponds roughly to first step in VOICE_CALL stream volume setting (see AudioService.java) 2699 volume = 0.01 + 0.99 * volume; 2700 // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is 2701 // enabled 2702 if (stream == AudioSystem::BLUETOOTH_SCO) { 2703 mpClientInterface->setStreamVolume(AudioSystem::VOICE_CALL, volume, output, delayMs); 2704 } 2705 } 2706 2707 mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream, volume, output, delayMs); 2708 } 2709 2710 if (stream == AudioSystem::VOICE_CALL || 2711 stream == AudioSystem::BLUETOOTH_SCO) { 2712 float voiceVolume; 2713 // Force voice volume to max for bluetooth SCO as volume is managed by the headset 2714 if (stream == AudioSystem::VOICE_CALL) { 2715 voiceVolume = (float)index/(float)mStreams[stream].mIndexMax; 2716 } else { 2717 voiceVolume = 1.0; 2718 } 2719 2720 if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) { 2721 mpClientInterface->setVoiceVolume(voiceVolume, delayMs); 2722 mLastVoiceVolume = voiceVolume; 2723 } 2724 } 2725 2726 return NO_ERROR; 2727 } 2728 2729 void AudioPolicyManagerBase::applyStreamVolumes(audio_io_handle_t output, 2730 audio_devices_t device, 2731 int delayMs, 2732 bool force) 2733 { 2734 ALOGVV("applyStreamVolumes() for output %d and device %x", output, device); 2735 2736 for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) { 2737 checkAndSetVolume(stream, 2738 mStreams[stream].getVolumeIndex(device), 2739 output, 2740 device, 2741 delayMs, 2742 force); 2743 } 2744 } 2745 2746 void AudioPolicyManagerBase::setStrategyMute(routing_strategy strategy, 2747 bool on, 2748 audio_io_handle_t output, 2749 int delayMs, 2750 audio_devices_t device) 2751 { 2752 ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output); 2753 for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) { 2754 if (getStrategy((AudioSystem::stream_type)stream) == strategy) { 2755 setStreamMute(stream, on, output, delayMs, device); 2756 } 2757 } 2758 } 2759 2760 void AudioPolicyManagerBase::setStreamMute(int stream, 2761 bool on, 2762 audio_io_handle_t output, 2763 int delayMs, 2764 audio_devices_t device) 2765 { 2766 StreamDescriptor &streamDesc = mStreams[stream]; 2767 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output); 2768 if (device == 0) { 2769 device = outputDesc->device(); 2770 } 2771 2772 ALOGVV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d device %04x", 2773 stream, on, output, outputDesc->mMuteCount[stream], device); 2774 2775 if (on) { 2776 if (outputDesc->mMuteCount[stream] == 0) { 2777 if (streamDesc.mCanBeMuted) { 2778 checkAndSetVolume(stream, 0, output, device, delayMs); 2779 } 2780 } 2781 // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored 2782 outputDesc->mMuteCount[stream]++; 2783 } else { 2784 if (outputDesc->mMuteCount[stream] == 0) { 2785 ALOGV("setStreamMute() unmuting non muted stream!"); 2786 return; 2787 } 2788 if (--outputDesc->mMuteCount[stream] == 0) { 2789 checkAndSetVolume(stream, 2790 streamDesc.getVolumeIndex((audio_devices_t)device), 2791 output, 2792 device, 2793 delayMs); 2794 } 2795 } 2796 } 2797 2798 void AudioPolicyManagerBase::handleIncallSonification(int stream, bool starting, bool stateChange) 2799 { 2800 // if the stream pertains to sonification strategy and we are in call we must 2801 // mute the stream if it is low visibility. If it is high visibility, we must play a tone 2802 // in the device used for phone strategy and play the tone if the selected device does not 2803 // interfere with the device used for phone strategy 2804 // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as 2805 // many times as there are active tracks on the output 2806 const routing_strategy stream_strategy = getStrategy((AudioSystem::stream_type)stream); 2807 if ((stream_strategy == STRATEGY_SONIFICATION) || 2808 ((stream_strategy == STRATEGY_SONIFICATION_RESPECTFUL))) { 2809 AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mPrimaryOutput); 2810 ALOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d", 2811 stream, starting, outputDesc->mDevice, stateChange); 2812 if (outputDesc->mRefCount[stream]) { 2813 int muteCount = 1; 2814 if (stateChange) { 2815 muteCount = outputDesc->mRefCount[stream]; 2816 } 2817 if (AudioSystem::isLowVisibility((AudioSystem::stream_type)stream)) { 2818 ALOGV("handleIncallSonification() low visibility, muteCount %d", muteCount); 2819 for (int i = 0; i < muteCount; i++) { 2820 setStreamMute(stream, starting, mPrimaryOutput); 2821 } 2822 } else { 2823 ALOGV("handleIncallSonification() high visibility"); 2824 if (outputDesc->device() & 2825 getDeviceForStrategy(STRATEGY_PHONE, true /*fromCache*/)) { 2826 ALOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount); 2827 for (int i = 0; i < muteCount; i++) { 2828 setStreamMute(stream, starting, mPrimaryOutput); 2829 } 2830 } 2831 if (starting) { 2832 mpClientInterface->startTone(ToneGenerator::TONE_SUP_CALL_WAITING, AudioSystem::VOICE_CALL); 2833 } else { 2834 mpClientInterface->stopTone(); 2835 } 2836 } 2837 } 2838 } 2839 } 2840 2841 bool AudioPolicyManagerBase::isInCall() 2842 { 2843 return isStateInCall(mPhoneState); 2844 } 2845 2846 bool AudioPolicyManagerBase::isStateInCall(int state) { 2847 return ((state == AudioSystem::MODE_IN_CALL) || 2848 (state == AudioSystem::MODE_IN_COMMUNICATION)); 2849 } 2850 2851 bool AudioPolicyManagerBase::needsDirectOuput(audio_stream_type_t stream, 2852 uint32_t samplingRate, 2853 audio_format_t format, 2854 audio_channel_mask_t channelMask, 2855 audio_output_flags_t flags, 2856 audio_devices_t device) 2857 { 2858 return ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) || 2859 (format != 0 && !AudioSystem::isLinearPCM(format))); 2860 } 2861 2862 uint32_t AudioPolicyManagerBase::getMaxEffectsCpuLoad() 2863 { 2864 return MAX_EFFECTS_CPU_LOAD; 2865 } 2866 2867 uint32_t AudioPolicyManagerBase::getMaxEffectsMemory() 2868 { 2869 return MAX_EFFECTS_MEMORY; 2870 } 2871 2872 // --- AudioOutputDescriptor class implementation 2873 2874 AudioPolicyManagerBase::AudioOutputDescriptor::AudioOutputDescriptor( 2875 const IOProfile *profile) 2876 : mId(0), mSamplingRate(0), mFormat((audio_format_t)0), 2877 mChannelMask((audio_channel_mask_t)0), mLatency(0), 2878 mFlags((audio_output_flags_t)0), mDevice((audio_devices_t)0), 2879 mOutput1(0), mOutput2(0), mProfile(profile) 2880 { 2881 // clear usage count for all stream types 2882 for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) { 2883 mRefCount[i] = 0; 2884 mCurVolume[i] = -1.0; 2885 mMuteCount[i] = 0; 2886 mStopTime[i] = 0; 2887 } 2888 if (profile != NULL) { 2889 mSamplingRate = profile->mSamplingRates[0]; 2890 mFormat = profile->mFormats[0]; 2891 mChannelMask = profile->mChannelMasks[0]; 2892 mFlags = profile->mFlags; 2893 } 2894 } 2895 2896 audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::device() 2897 { 2898 if (isDuplicated()) { 2899 return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice); 2900 } else { 2901 return mDevice; 2902 } 2903 } 2904 2905 uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::latency() 2906 { 2907 if (isDuplicated()) { 2908 return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency; 2909 } else { 2910 return mLatency; 2911 } 2912 } 2913 2914 bool AudioPolicyManagerBase::AudioOutputDescriptor::sharesHwModuleWith( 2915 const AudioOutputDescriptor *outputDesc) 2916 { 2917 if (isDuplicated()) { 2918 return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc); 2919 } else if (outputDesc->isDuplicated()){ 2920 return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2); 2921 } else { 2922 return (mProfile->mModule == outputDesc->mProfile->mModule); 2923 } 2924 } 2925 2926 void AudioPolicyManagerBase::AudioOutputDescriptor::changeRefCount(AudioSystem::stream_type stream, int delta) 2927 { 2928 // forward usage count change to attached outputs 2929 if (isDuplicated()) { 2930 mOutput1->changeRefCount(stream, delta); 2931 mOutput2->changeRefCount(stream, delta); 2932 } 2933 if ((delta + (int)mRefCount[stream]) < 0) { 2934 ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", delta, stream, mRefCount[stream]); 2935 mRefCount[stream] = 0; 2936 return; 2937 } 2938 mRefCount[stream] += delta; 2939 ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]); 2940 } 2941 2942 uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::refCount() 2943 { 2944 uint32_t refcount = 0; 2945 for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) { 2946 refcount += mRefCount[i]; 2947 } 2948 return refcount; 2949 } 2950 2951 uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::strategyRefCount(routing_strategy strategy) 2952 { 2953 uint32_t refCount = 0; 2954 for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) { 2955 if (getStrategy((AudioSystem::stream_type)i) == strategy) { 2956 refCount += mRefCount[i]; 2957 } 2958 } 2959 return refCount; 2960 } 2961 2962 audio_devices_t AudioPolicyManagerBase::AudioOutputDescriptor::supportedDevices() 2963 { 2964 if (isDuplicated()) { 2965 return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices()); 2966 } else { 2967 return mProfile->mSupportedDevices ; 2968 } 2969 } 2970 2971 status_t AudioPolicyManagerBase::AudioOutputDescriptor::dump(int fd) 2972 { 2973 const size_t SIZE = 256; 2974 char buffer[SIZE]; 2975 String8 result; 2976 2977 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 2978 result.append(buffer); 2979 snprintf(buffer, SIZE, " Format: %d\n", mFormat); 2980 result.append(buffer); 2981 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 2982 result.append(buffer); 2983 snprintf(buffer, SIZE, " Latency: %d\n", mLatency); 2984 result.append(buffer); 2985 snprintf(buffer, SIZE, " Flags %08x\n", mFlags); 2986 result.append(buffer); 2987 snprintf(buffer, SIZE, " Devices %08x\n", device()); 2988 result.append(buffer); 2989 snprintf(buffer, SIZE, " Stream volume refCount muteCount\n"); 2990 result.append(buffer); 2991 for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) { 2992 snprintf(buffer, SIZE, " %02d %.03f %02d %02d\n", i, mCurVolume[i], mRefCount[i], mMuteCount[i]); 2993 result.append(buffer); 2994 } 2995 write(fd, result.string(), result.size()); 2996 2997 return NO_ERROR; 2998 } 2999 3000 // --- AudioInputDescriptor class implementation 3001 3002 AudioPolicyManagerBase::AudioInputDescriptor::AudioInputDescriptor(const IOProfile *profile) 3003 : mSamplingRate(0), mFormat((audio_format_t)0), mChannelMask((audio_channel_mask_t)0), 3004 mDevice((audio_devices_t)0), mRefCount(0), 3005 mInputSource(0), mProfile(profile) 3006 { 3007 } 3008 3009 status_t AudioPolicyManagerBase::AudioInputDescriptor::dump(int fd) 3010 { 3011 const size_t SIZE = 256; 3012 char buffer[SIZE]; 3013 String8 result; 3014 3015 snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); 3016 result.append(buffer); 3017 snprintf(buffer, SIZE, " Format: %d\n", mFormat); 3018 result.append(buffer); 3019 snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask); 3020 result.append(buffer); 3021 snprintf(buffer, SIZE, " Devices %08x\n", mDevice); 3022 result.append(buffer); 3023 snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount); 3024 result.append(buffer); 3025 write(fd, result.string(), result.size()); 3026 3027 return NO_ERROR; 3028 } 3029 3030 // --- StreamDescriptor class implementation 3031 3032 AudioPolicyManagerBase::StreamDescriptor::StreamDescriptor() 3033 : mIndexMin(0), mIndexMax(1), mCanBeMuted(true) 3034 { 3035 mIndexCur.add(AUDIO_DEVICE_OUT_DEFAULT, 0); 3036 } 3037 3038 int AudioPolicyManagerBase::StreamDescriptor::getVolumeIndex(audio_devices_t device) 3039 { 3040 device = AudioPolicyManagerBase::getDeviceForVolume(device); 3041 // there is always a valid entry for AUDIO_DEVICE_OUT_DEFAULT 3042 if (mIndexCur.indexOfKey(device) < 0) { 3043 device = AUDIO_DEVICE_OUT_DEFAULT; 3044 } 3045 return mIndexCur.valueFor(device); 3046 } 3047 3048 void AudioPolicyManagerBase::StreamDescriptor::dump(int fd) 3049 { 3050 const size_t SIZE = 256; 3051 char buffer[SIZE]; 3052 String8 result; 3053 3054 snprintf(buffer, SIZE, "%s %02d %02d ", 3055 mCanBeMuted ? "true " : "false", mIndexMin, mIndexMax); 3056 result.append(buffer); 3057 for (size_t i = 0; i < mIndexCur.size(); i++) { 3058 snprintf(buffer, SIZE, "%04x : %02d, ", 3059 mIndexCur.keyAt(i), 3060 mIndexCur.valueAt(i)); 3061 result.append(buffer); 3062 } 3063 result.append("\n"); 3064 3065 write(fd, result.string(), result.size()); 3066 } 3067 3068 // --- EffectDescriptor class implementation 3069 3070 status_t AudioPolicyManagerBase::EffectDescriptor::dump(int fd) 3071 { 3072 const size_t SIZE = 256; 3073 char buffer[SIZE]; 3074 String8 result; 3075 3076 snprintf(buffer, SIZE, " I/O: %d\n", mIo); 3077 result.append(buffer); 3078 snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy); 3079 result.append(buffer); 3080 snprintf(buffer, SIZE, " Session: %d\n", mSession); 3081 result.append(buffer); 3082 snprintf(buffer, SIZE, " Name: %s\n", mDesc.name); 3083 result.append(buffer); 3084 snprintf(buffer, SIZE, " %s\n", mEnabled ? "Enabled" : "Disabled"); 3085 result.append(buffer); 3086 write(fd, result.string(), result.size()); 3087 3088 return NO_ERROR; 3089 } 3090 3091 // --- IOProfile class implementation 3092 3093 AudioPolicyManagerBase::HwModule::HwModule(const char *name) 3094 : mName(strndup(name, AUDIO_HARDWARE_MODULE_ID_MAX_LEN)), mHandle(0) 3095 { 3096 } 3097 3098 AudioPolicyManagerBase::HwModule::~HwModule() 3099 { 3100 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 3101 delete mOutputProfiles[i]; 3102 } 3103 for (size_t i = 0; i < mInputProfiles.size(); i++) { 3104 delete mInputProfiles[i]; 3105 } 3106 free((void *)mName); 3107 } 3108 3109 void AudioPolicyManagerBase::HwModule::dump(int fd) 3110 { 3111 const size_t SIZE = 256; 3112 char buffer[SIZE]; 3113 String8 result; 3114 3115 snprintf(buffer, SIZE, " - name: %s\n", mName); 3116 result.append(buffer); 3117 snprintf(buffer, SIZE, " - handle: %d\n", mHandle); 3118 result.append(buffer); 3119 write(fd, result.string(), result.size()); 3120 if (mOutputProfiles.size()) { 3121 write(fd, " - outputs:\n", sizeof(" - outputs:\n")); 3122 for (size_t i = 0; i < mOutputProfiles.size(); i++) { 3123 snprintf(buffer, SIZE, " output %d:\n", i); 3124 write(fd, buffer, strlen(buffer)); 3125 mOutputProfiles[i]->dump(fd); 3126 } 3127 } 3128 if (mInputProfiles.size()) { 3129 write(fd, " - inputs:\n", sizeof(" - inputs:\n")); 3130 for (size_t i = 0; i < mInputProfiles.size(); i++) { 3131 snprintf(buffer, SIZE, " input %d:\n", i); 3132 write(fd, buffer, strlen(buffer)); 3133 mInputProfiles[i]->dump(fd); 3134 } 3135 } 3136 } 3137 3138 AudioPolicyManagerBase::IOProfile::IOProfile(HwModule *module) 3139 : mFlags((audio_output_flags_t)0), mModule(module) 3140 { 3141 } 3142 3143 AudioPolicyManagerBase::IOProfile::~IOProfile() 3144 { 3145 } 3146 3147 // checks if the IO profile is compatible with specified parameters. By convention a value of 0 3148 // means a parameter is don't care 3149 bool AudioPolicyManagerBase::IOProfile::isCompatibleProfile(audio_devices_t device, 3150 uint32_t samplingRate, 3151 uint32_t format, 3152 uint32_t channelMask, 3153 audio_output_flags_t flags) const 3154 { 3155 if ((mSupportedDevices & device) != device) { 3156 return false; 3157 } 3158 if ((mFlags & flags) != flags) { 3159 return false; 3160 } 3161 if (samplingRate != 0) { 3162 size_t i; 3163 for (i = 0; i < mSamplingRates.size(); i++) 3164 { 3165 if (mSamplingRates[i] == samplingRate) { 3166 break; 3167 } 3168 } 3169 if (i == mSamplingRates.size()) { 3170 return false; 3171 } 3172 } 3173 if (format != 0) { 3174 size_t i; 3175 for (i = 0; i < mFormats.size(); i++) 3176 { 3177 if (mFormats[i] == format) { 3178 break; 3179 } 3180 } 3181 if (i == mFormats.size()) { 3182 return false; 3183 } 3184 } 3185 if (channelMask != 0) { 3186 size_t i; 3187 for (i = 0; i < mChannelMasks.size(); i++) 3188 { 3189 if (mChannelMasks[i] == channelMask) { 3190 break; 3191 } 3192 } 3193 if (i == mChannelMasks.size()) { 3194 return false; 3195 } 3196 } 3197 return true; 3198 } 3199 3200 void AudioPolicyManagerBase::IOProfile::dump(int fd) 3201 { 3202 const size_t SIZE = 256; 3203 char buffer[SIZE]; 3204 String8 result; 3205 3206 snprintf(buffer, SIZE, " - sampling rates: "); 3207 result.append(buffer); 3208 for (size_t i = 0; i < mSamplingRates.size(); i++) { 3209 snprintf(buffer, SIZE, "%d", mSamplingRates[i]); 3210 result.append(buffer); 3211 result.append(i == (mSamplingRates.size() - 1) ? "\n" : ", "); 3212 } 3213 3214 snprintf(buffer, SIZE, " - channel masks: "); 3215 result.append(buffer); 3216 for (size_t i = 0; i < mChannelMasks.size(); i++) { 3217 snprintf(buffer, SIZE, "%04x", mChannelMasks[i]); 3218 result.append(buffer); 3219 result.append(i == (mChannelMasks.size() - 1) ? "\n" : ", "); 3220 } 3221 3222 snprintf(buffer, SIZE, " - formats: "); 3223 result.append(buffer); 3224 for (size_t i = 0; i < mFormats.size(); i++) { 3225 snprintf(buffer, SIZE, "%d", mFormats[i]); 3226 result.append(buffer); 3227 result.append(i == (mFormats.size() - 1) ? "\n" : ", "); 3228 } 3229 3230 snprintf(buffer, SIZE, " - devices: %04x\n", mSupportedDevices); 3231 result.append(buffer); 3232 snprintf(buffer, SIZE, " - flags: %04x\n", mFlags); 3233 result.append(buffer); 3234 3235 write(fd, result.string(), result.size()); 3236 } 3237 3238 // --- audio_policy.conf file parsing 3239 3240 struct StringToEnum { 3241 const char *name; 3242 uint32_t value; 3243 }; 3244 3245 #define STRING_TO_ENUM(string) { #string, string } 3246 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 3247 3248 const struct StringToEnum sDeviceNameToEnumTable[] = { 3249 STRING_TO_ENUM(AUDIO_DEVICE_OUT_EARPIECE), 3250 STRING_TO_ENUM(AUDIO_DEVICE_OUT_SPEAKER), 3251 STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADSET), 3252 STRING_TO_ENUM(AUDIO_DEVICE_OUT_WIRED_HEADPHONE), 3253 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_SCO), 3254 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_A2DP), 3255 STRING_TO_ENUM(AUDIO_DEVICE_OUT_AUX_DIGITAL), 3256 STRING_TO_ENUM(AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET), 3257 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET), 3258 STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_DEVICE), 3259 STRING_TO_ENUM(AUDIO_DEVICE_OUT_USB_ACCESSORY), 3260 STRING_TO_ENUM(AUDIO_DEVICE_OUT_ALL_USB), 3261 STRING_TO_ENUM(AUDIO_DEVICE_IN_BUILTIN_MIC), 3262 STRING_TO_ENUM(AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET), 3263 STRING_TO_ENUM(AUDIO_DEVICE_IN_WIRED_HEADSET), 3264 STRING_TO_ENUM(AUDIO_DEVICE_IN_AUX_DIGITAL), 3265 STRING_TO_ENUM(AUDIO_DEVICE_IN_VOICE_CALL), 3266 STRING_TO_ENUM(AUDIO_DEVICE_IN_BACK_MIC), 3267 }; 3268 3269 const struct StringToEnum sFlagNameToEnumTable[] = { 3270 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DIRECT), 3271 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_PRIMARY), 3272 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_FAST), 3273 STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_DEEP_BUFFER), 3274 }; 3275 3276 const struct StringToEnum sFormatNameToEnumTable[] = { 3277 STRING_TO_ENUM(AUDIO_FORMAT_PCM_16_BIT), 3278 STRING_TO_ENUM(AUDIO_FORMAT_PCM_8_BIT), 3279 STRING_TO_ENUM(AUDIO_FORMAT_MP3), 3280 STRING_TO_ENUM(AUDIO_FORMAT_AAC), 3281 STRING_TO_ENUM(AUDIO_FORMAT_VORBIS), 3282 }; 3283 3284 const struct StringToEnum sOutChannelsNameToEnumTable[] = { 3285 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_MONO), 3286 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_STEREO), 3287 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_5POINT1), 3288 STRING_TO_ENUM(AUDIO_CHANNEL_OUT_7POINT1), 3289 }; 3290 3291 const struct StringToEnum sInChannelsNameToEnumTable[] = { 3292 STRING_TO_ENUM(AUDIO_CHANNEL_IN_MONO), 3293 STRING_TO_ENUM(AUDIO_CHANNEL_IN_STEREO), 3294 }; 3295 3296 3297 uint32_t AudioPolicyManagerBase::stringToEnum(const struct StringToEnum *table, 3298 size_t size, 3299 const char *name) 3300 { 3301 for (size_t i = 0; i < size; i++) { 3302 if (strcmp(table[i].name, name) == 0) { 3303 ALOGV("stringToEnum() found %s", table[i].name); 3304 return table[i].value; 3305 } 3306 } 3307 return 0; 3308 } 3309 3310 audio_output_flags_t AudioPolicyManagerBase::parseFlagNames(char *name) 3311 { 3312 uint32_t flag = 0; 3313 3314 // it is OK to cast name to non const here as we are not going to use it after 3315 // strtok() modifies it 3316 char *flagName = strtok(name, "|"); 3317 while (flagName != NULL) { 3318 if (strlen(flagName) != 0) { 3319 flag |= stringToEnum(sFlagNameToEnumTable, 3320 ARRAY_SIZE(sFlagNameToEnumTable), 3321 flagName); 3322 } 3323 flagName = strtok(NULL, "|"); 3324 } 3325 return (audio_output_flags_t)flag; 3326 } 3327 3328 audio_devices_t AudioPolicyManagerBase::parseDeviceNames(char *name) 3329 { 3330 uint32_t device = 0; 3331 3332 char *devName = strtok(name, "|"); 3333 while (devName != NULL) { 3334 if (strlen(devName) != 0) { 3335 device |= stringToEnum(sDeviceNameToEnumTable, 3336 ARRAY_SIZE(sDeviceNameToEnumTable), 3337 devName); 3338 } 3339 devName = strtok(NULL, "|"); 3340 } 3341 return (audio_devices_t)device; 3342 } 3343 3344 void AudioPolicyManagerBase::loadSamplingRates(char *name, IOProfile *profile) 3345 { 3346 char *str = strtok(name, "|"); 3347 3348 // by convention, "0' in the first entry in mSamplingRates indicates the supported sampling 3349 // rates should be read from the output stream after it is opened for the first time 3350 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 3351 profile->mSamplingRates.add(0); 3352 return; 3353 } 3354 3355 while (str != NULL) { 3356 uint32_t rate = atoi(str); 3357 if (rate != 0) { 3358 ALOGV("loadSamplingRates() adding rate %d", rate); 3359 profile->mSamplingRates.add(rate); 3360 } 3361 str = strtok(NULL, "|"); 3362 } 3363 return; 3364 } 3365 3366 void AudioPolicyManagerBase::loadFormats(char *name, IOProfile *profile) 3367 { 3368 char *str = strtok(name, "|"); 3369 3370 // by convention, "0' in the first entry in mFormats indicates the supported formats 3371 // should be read from the output stream after it is opened for the first time 3372 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 3373 profile->mFormats.add((audio_format_t)0); 3374 return; 3375 } 3376 3377 while (str != NULL) { 3378 audio_format_t format = (audio_format_t)stringToEnum(sFormatNameToEnumTable, 3379 ARRAY_SIZE(sFormatNameToEnumTable), 3380 str); 3381 if (format != 0) { 3382 profile->mFormats.add(format); 3383 } 3384 str = strtok(NULL, "|"); 3385 } 3386 return; 3387 } 3388 3389 void AudioPolicyManagerBase::loadInChannels(char *name, IOProfile *profile) 3390 { 3391 const char *str = strtok(name, "|"); 3392 3393 ALOGV("loadInChannels() %s", name); 3394 3395 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 3396 profile->mChannelMasks.add((audio_channel_mask_t)0); 3397 return; 3398 } 3399 3400 while (str != NULL) { 3401 audio_channel_mask_t channelMask = 3402 (audio_channel_mask_t)stringToEnum(sInChannelsNameToEnumTable, 3403 ARRAY_SIZE(sInChannelsNameToEnumTable), 3404 str); 3405 if (channelMask != 0) { 3406 ALOGV("loadInChannels() adding channelMask %04x", channelMask); 3407 profile->mChannelMasks.add(channelMask); 3408 } 3409 str = strtok(NULL, "|"); 3410 } 3411 return; 3412 } 3413 3414 void AudioPolicyManagerBase::loadOutChannels(char *name, IOProfile *profile) 3415 { 3416 const char *str = strtok(name, "|"); 3417 3418 ALOGV("loadOutChannels() %s", name); 3419 3420 // by convention, "0' in the first entry in mChannelMasks indicates the supported channel 3421 // masks should be read from the output stream after it is opened for the first time 3422 if (str != NULL && strcmp(str, DYNAMIC_VALUE_TAG) == 0) { 3423 profile->mChannelMasks.add((audio_channel_mask_t)0); 3424 return; 3425 } 3426 3427 while (str != NULL) { 3428 audio_channel_mask_t channelMask = 3429 (audio_channel_mask_t)stringToEnum(sOutChannelsNameToEnumTable, 3430 ARRAY_SIZE(sOutChannelsNameToEnumTable), 3431 str); 3432 if (channelMask != 0) { 3433 profile->mChannelMasks.add(channelMask); 3434 } 3435 str = strtok(NULL, "|"); 3436 } 3437 return; 3438 } 3439 3440 status_t AudioPolicyManagerBase::loadInput(cnode *root, HwModule *module) 3441 { 3442 cnode *node = root->first_child; 3443 3444 IOProfile *profile = new IOProfile(module); 3445 3446 while (node) { 3447 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 3448 loadSamplingRates((char *)node->value, profile); 3449 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 3450 loadFormats((char *)node->value, profile); 3451 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 3452 loadInChannels((char *)node->value, profile); 3453 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 3454 profile->mSupportedDevices = parseDeviceNames((char *)node->value); 3455 } 3456 node = node->next; 3457 } 3458 ALOGW_IF(profile->mSupportedDevices == (audio_devices_t)0, 3459 "loadInput() invalid supported devices"); 3460 ALOGW_IF(profile->mChannelMasks.size() == 0, 3461 "loadInput() invalid supported channel masks"); 3462 ALOGW_IF(profile->mSamplingRates.size() == 0, 3463 "loadInput() invalid supported sampling rates"); 3464 ALOGW_IF(profile->mFormats.size() == 0, 3465 "loadInput() invalid supported formats"); 3466 if ((profile->mSupportedDevices != (audio_devices_t)0) && 3467 (profile->mChannelMasks.size() != 0) && 3468 (profile->mSamplingRates.size() != 0) && 3469 (profile->mFormats.size() != 0)) { 3470 3471 ALOGV("loadInput() adding input mSupportedDevices %04x", profile->mSupportedDevices); 3472 3473 module->mInputProfiles.add(profile); 3474 return NO_ERROR; 3475 } else { 3476 delete profile; 3477 return BAD_VALUE; 3478 } 3479 } 3480 3481 status_t AudioPolicyManagerBase::loadOutput(cnode *root, HwModule *module) 3482 { 3483 cnode *node = root->first_child; 3484 3485 IOProfile *profile = new IOProfile(module); 3486 3487 while (node) { 3488 if (strcmp(node->name, SAMPLING_RATES_TAG) == 0) { 3489 loadSamplingRates((char *)node->value, profile); 3490 } else if (strcmp(node->name, FORMATS_TAG) == 0) { 3491 loadFormats((char *)node->value, profile); 3492 } else if (strcmp(node->name, CHANNELS_TAG) == 0) { 3493 loadOutChannels((char *)node->value, profile); 3494 } else if (strcmp(node->name, DEVICES_TAG) == 0) { 3495 profile->mSupportedDevices = parseDeviceNames((char *)node->value); 3496 } else if (strcmp(node->name, FLAGS_TAG) == 0) { 3497 profile->mFlags = parseFlagNames((char *)node->value); 3498 } 3499 node = node->next; 3500 } 3501 ALOGW_IF(profile->mSupportedDevices == (audio_devices_t)0, 3502 "loadOutput() invalid supported devices"); 3503 ALOGW_IF(profile->mChannelMasks.size() == 0, 3504 "loadOutput() invalid supported channel masks"); 3505 ALOGW_IF(profile->mSamplingRates.size() == 0, 3506 "loadOutput() invalid supported sampling rates"); 3507 ALOGW_IF(profile->mFormats.size() == 0, 3508 "loadOutput() invalid supported formats"); 3509 if ((profile->mSupportedDevices != (audio_devices_t)0) && 3510 (profile->mChannelMasks.size() != 0) && 3511 (profile->mSamplingRates.size() != 0) && 3512 (profile->mFormats.size() != 0)) { 3513 3514 ALOGV("loadOutput() adding output mSupportedDevices %04x, mFlags %04x", 3515 profile->mSupportedDevices, profile->mFlags); 3516 3517 module->mOutputProfiles.add(profile); 3518 return NO_ERROR; 3519 } else { 3520 delete profile; 3521 return BAD_VALUE; 3522 } 3523 } 3524 3525 void AudioPolicyManagerBase::loadHwModule(cnode *root) 3526 { 3527 cnode *node = config_find(root, OUTPUTS_TAG); 3528 status_t status = NAME_NOT_FOUND; 3529 3530 HwModule *module = new HwModule(root->name); 3531 3532 if (node != NULL) { 3533 if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_A2DP) == 0) { 3534 mHasA2dp = true; 3535 } else if (strcmp(root->name, AUDIO_HARDWARE_MODULE_ID_USB) == 0) { 3536 mHasUsb = true; 3537 } 3538 3539 node = node->first_child; 3540 while (node) { 3541 ALOGV("loadHwModule() loading output %s", node->name); 3542 status_t tmpStatus = loadOutput(node, module); 3543 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 3544 status = tmpStatus; 3545 } 3546 node = node->next; 3547 } 3548 } 3549 node = config_find(root, INPUTS_TAG); 3550 if (node != NULL) { 3551 node = node->first_child; 3552 while (node) { 3553 ALOGV("loadHwModule() loading input %s", node->name); 3554 status_t tmpStatus = loadInput(node, module); 3555 if (status == NAME_NOT_FOUND || status == NO_ERROR) { 3556 status = tmpStatus; 3557 } 3558 node = node->next; 3559 } 3560 } 3561 if (status == NO_ERROR) { 3562 mHwModules.add(module); 3563 } else { 3564 delete module; 3565 } 3566 } 3567 3568 void AudioPolicyManagerBase::loadHwModules(cnode *root) 3569 { 3570 cnode *node = config_find(root, AUDIO_HW_MODULE_TAG); 3571 if (node == NULL) { 3572 return; 3573 } 3574 3575 node = node->first_child; 3576 while (node) { 3577 ALOGV("loadHwModules() loading module %s", node->name); 3578 loadHwModule(node); 3579 node = node->next; 3580 } 3581 } 3582 3583 void AudioPolicyManagerBase::loadGlobalConfig(cnode *root) 3584 { 3585 cnode *node = config_find(root, GLOBAL_CONFIG_TAG); 3586 if (node == NULL) { 3587 return; 3588 } 3589 node = node->first_child; 3590 while (node) { 3591 if (strcmp(ATTACHED_OUTPUT_DEVICES_TAG, node->name) == 0) { 3592 mAttachedOutputDevices = parseDeviceNames((char *)node->value); 3593 ALOGW_IF(mAttachedOutputDevices == 0, "loadGlobalConfig() no attached output devices"); 3594 ALOGV("loadGlobalConfig() mAttachedOutputDevices %04x", mAttachedOutputDevices); 3595 } else if (strcmp(DEFAULT_OUTPUT_DEVICE_TAG, node->name) == 0) { 3596 mDefaultOutputDevice = (audio_devices_t)stringToEnum(sDeviceNameToEnumTable, 3597 ARRAY_SIZE(sDeviceNameToEnumTable), 3598 (char *)node->value); 3599 ALOGW_IF(mDefaultOutputDevice == 0, "loadGlobalConfig() default device not specified"); 3600 ALOGV("loadGlobalConfig() mDefaultOutputDevice %04x", mDefaultOutputDevice); 3601 } else if (strcmp(ATTACHED_INPUT_DEVICES_TAG, node->name) == 0) { 3602 mAvailableInputDevices = parseDeviceNames((char *)node->value); 3603 ALOGV("loadGlobalConfig() mAvailableInputDevices %04x", mAvailableInputDevices); 3604 } 3605 node = node->next; 3606 } 3607 } 3608 3609 status_t AudioPolicyManagerBase::loadAudioPolicyConfig(const char *path) 3610 { 3611 cnode *root; 3612 char *data; 3613 3614 data = (char *)load_file(path, NULL); 3615 if (data == NULL) { 3616 return -ENODEV; 3617 } 3618 root = config_node("", ""); 3619 config_load(root, data); 3620 3621 loadGlobalConfig(root); 3622 loadHwModules(root); 3623 3624 config_free(root); 3625 free(root); 3626 free(data); 3627 3628 ALOGI("loadAudioPolicyConfig() loaded %s\n", path); 3629 3630 return NO_ERROR; 3631 } 3632 3633 void AudioPolicyManagerBase::defaultAudioPolicyConfig(void) 3634 { 3635 HwModule *module; 3636 IOProfile *profile; 3637 3638 mDefaultOutputDevice = AUDIO_DEVICE_OUT_SPEAKER; 3639 mAttachedOutputDevices = AUDIO_DEVICE_OUT_SPEAKER; 3640 mAvailableInputDevices = AUDIO_DEVICE_IN_BUILTIN_MIC; 3641 3642 module = new HwModule("primary"); 3643 3644 profile = new IOProfile(module); 3645 profile->mSamplingRates.add(44100); 3646 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 3647 profile->mChannelMasks.add(AUDIO_CHANNEL_OUT_STEREO); 3648 profile->mSupportedDevices = AUDIO_DEVICE_OUT_SPEAKER; 3649 profile->mFlags = AUDIO_OUTPUT_FLAG_PRIMARY; 3650 module->mOutputProfiles.add(profile); 3651 3652 profile = new IOProfile(module); 3653 profile->mSamplingRates.add(8000); 3654 profile->mFormats.add(AUDIO_FORMAT_PCM_16_BIT); 3655 profile->mChannelMasks.add(AUDIO_CHANNEL_IN_MONO); 3656 profile->mSupportedDevices = AUDIO_DEVICE_IN_BUILTIN_MIC; 3657 module->mInputProfiles.add(profile); 3658 3659 mHwModules.add(module); 3660 } 3661 3662 }; // namespace android 3663
