/* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #define LOG_TAG "AudioPolicyManagerBase" //#define LOG_NDEBUG 0 #include #include #include namespace android { // ---------------------------------------------------------------------------- // AudioPolicyInterface implementation // ---------------------------------------------------------------------------- status_t AudioPolicyManagerBase::setDeviceConnectionState(AudioSystem::audio_devices device, AudioSystem::device_connection_state state, const char *device_address) { LOGV("setDeviceConnectionState() device: %x, state %d, address %s", device, state, device_address); // connect/disconnect only 1 device at a time if (AudioSystem::popCount(device) != 1) return BAD_VALUE; if (strlen(device_address) >= MAX_DEVICE_ADDRESS_LEN) { LOGE("setDeviceConnectionState() invalid address: %s", device_address); return BAD_VALUE; } // handle output devices if (AudioSystem::isOutputDevice(device)) { #ifndef WITH_A2DP if (AudioSystem::isA2dpDevice(device)) { LOGE("setDeviceConnectionState() invalid device: %x", device); return BAD_VALUE; } #endif switch (state) { // handle output device connection case AudioSystem::DEVICE_STATE_AVAILABLE: if (mAvailableOutputDevices & device) { LOGW("setDeviceConnectionState() device already connected: %x", device); return INVALID_OPERATION; } LOGV("setDeviceConnectionState() connecting device %x", device); // register new device as available mAvailableOutputDevices |= device; #ifdef WITH_A2DP // handle A2DP device connection if (AudioSystem::isA2dpDevice(device)) { status_t status = handleA2dpConnection(device, device_address); if (status != NO_ERROR) { mAvailableOutputDevices &= ~device; return status; } } else #endif { if (AudioSystem::isBluetoothScoDevice(device)) { LOGV("setDeviceConnectionState() BT SCO device, address %s", device_address); // keep track of SCO device address mScoDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN); #ifdef WITH_A2DP if (mA2dpOutput != 0 && mPhoneState != AudioSystem::MODE_NORMAL) { mpClientInterface->suspendOutput(mA2dpOutput); } #endif } } break; // handle output device disconnection case AudioSystem::DEVICE_STATE_UNAVAILABLE: { if (!(mAvailableOutputDevices & device)) { LOGW("setDeviceConnectionState() device not connected: %x", device); return INVALID_OPERATION; } LOGV("setDeviceConnectionState() disconnecting device %x", device); // remove device from available output devices mAvailableOutputDevices &= ~device; #ifdef WITH_A2DP // handle A2DP device disconnection if (AudioSystem::isA2dpDevice(device)) { status_t status = handleA2dpDisconnection(device, device_address); if (status != NO_ERROR) { mAvailableOutputDevices |= device; return status; } } else #endif { if (AudioSystem::isBluetoothScoDevice(device)) { mScoDeviceAddress = ""; #ifdef WITH_A2DP if (mA2dpOutput != 0 && mPhoneState != AudioSystem::MODE_NORMAL) { mpClientInterface->restoreOutput(mA2dpOutput); } #endif } } } break; default: LOGE("setDeviceConnectionState() invalid state: %x", state); return BAD_VALUE; } // request routing change if necessary uint32_t newDevice = getNewDevice(mHardwareOutput, false); #ifdef WITH_A2DP checkOutputForAllStrategies(newDevice); // A2DP outputs must be closed after checkOutputForAllStrategies() is executed if (state == AudioSystem::DEVICE_STATE_UNAVAILABLE && AudioSystem::isA2dpDevice(device)) { closeA2dpOutputs(); } #endif updateDeviceForStrategy(); setOutputDevice(mHardwareOutput, newDevice); if (device == AudioSystem::DEVICE_OUT_WIRED_HEADSET) { device = AudioSystem::DEVICE_IN_WIRED_HEADSET; } else if (device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO || device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET || device == AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT) { device = AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET; } else { return NO_ERROR; } } // handle input devices if (AudioSystem::isInputDevice(device)) { switch (state) { // handle input device connection case AudioSystem::DEVICE_STATE_AVAILABLE: { if (mAvailableInputDevices & device) { LOGW("setDeviceConnectionState() device already connected: %d", device); return INVALID_OPERATION; } mAvailableInputDevices |= device; } break; // handle input device disconnection case AudioSystem::DEVICE_STATE_UNAVAILABLE: { if (!(mAvailableInputDevices & device)) { LOGW("setDeviceConnectionState() device not connected: %d", device); return INVALID_OPERATION; } mAvailableInputDevices &= ~device; } break; default: LOGE("setDeviceConnectionState() invalid state: %x", state); return BAD_VALUE; } audio_io_handle_t activeInput = getActiveInput(); if (activeInput != 0) { AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput); uint32_t newDevice = getDeviceForInputSource(inputDesc->mInputSource); if (newDevice != inputDesc->mDevice) { LOGV("setDeviceConnectionState() changing device from %x to %x for input %d", inputDesc->mDevice, newDevice, activeInput); inputDesc->mDevice = newDevice; AudioParameter param = AudioParameter(); param.addInt(String8(AudioParameter::keyRouting), (int)newDevice); mpClientInterface->setParameters(activeInput, param.toString()); } } return NO_ERROR; } LOGW("setDeviceConnectionState() invalid device: %x", device); return BAD_VALUE; } AudioSystem::device_connection_state AudioPolicyManagerBase::getDeviceConnectionState(AudioSystem::audio_devices device, const char *device_address) { AudioSystem::device_connection_state state = AudioSystem::DEVICE_STATE_UNAVAILABLE; String8 address = String8(device_address); if (AudioSystem::isOutputDevice(device)) { if (device & mAvailableOutputDevices) { #ifdef WITH_A2DP if (AudioSystem::isA2dpDevice(device) && address != "" && mA2dpDeviceAddress != address) { return state; } #endif if (AudioSystem::isBluetoothScoDevice(device) && address != "" && mScoDeviceAddress != address) { return state; } state = AudioSystem::DEVICE_STATE_AVAILABLE; } } else if (AudioSystem::isInputDevice(device)) { if (device & mAvailableInputDevices) { state = AudioSystem::DEVICE_STATE_AVAILABLE; } } return state; } void AudioPolicyManagerBase::setPhoneState(int state) { LOGV("setPhoneState() state %d", state); uint32_t newDevice = 0; if (state < 0 || state >= AudioSystem::NUM_MODES) { LOGW("setPhoneState() invalid state %d", state); return; } if (state == mPhoneState ) { LOGW("setPhoneState() setting same state %d", state); return; } // if leaving call state, handle special case of active streams // pertaining to sonification strategy see handleIncallSonification() if (mPhoneState == AudioSystem::MODE_IN_CALL) { LOGV("setPhoneState() in call state management: new state is %d", state); for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) { handleIncallSonification(stream, false, true); } } // store previous phone state for management of sonification strategy below int oldState = mPhoneState; mPhoneState = state; bool force = false; // are we entering or starting a call if ((oldState != AudioSystem::MODE_IN_CALL) && (state == AudioSystem::MODE_IN_CALL)) { LOGV(" Entering call in setPhoneState()"); // force routing command to audio hardware when starting a call // even if no device change is needed force = true; } else if ((oldState == AudioSystem::MODE_IN_CALL) && (state != AudioSystem::MODE_IN_CALL)) { LOGV(" Exiting call in setPhoneState()"); // force routing command to audio hardware when exiting a call // even if no device change is needed force = true; } // check for device and output changes triggered by new phone state newDevice = getNewDevice(mHardwareOutput, false); #ifdef WITH_A2DP checkOutputForAllStrategies(newDevice); // suspend A2DP output if a SCO device is present. if (mA2dpOutput != 0 && mScoDeviceAddress != "") { if (oldState == AudioSystem::MODE_NORMAL) { mpClientInterface->suspendOutput(mA2dpOutput); } else if (state == AudioSystem::MODE_NORMAL) { mpClientInterface->restoreOutput(mA2dpOutput); } } #endif updateDeviceForStrategy(); AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mHardwareOutput); // force routing command to audio hardware when ending call // even if no device change is needed if (oldState == AudioSystem::MODE_IN_CALL && newDevice == 0) { newDevice = hwOutputDesc->device(); } // when changing from ring tone to in call mode, mute the ringing tone // immediately and delay the route change to avoid sending the ring tone // tail into the earpiece or headset. int delayMs = 0; if (state == AudioSystem::MODE_IN_CALL && oldState == AudioSystem::MODE_RINGTONE) { // delay the device change command by twice the output latency to have some margin // and be sure that audio buffers not yet affected by the mute are out when // we actually apply the route change delayMs = hwOutputDesc->mLatency*2; setStreamMute(AudioSystem::RING, true, mHardwareOutput); } // change routing is necessary setOutputDevice(mHardwareOutput, newDevice, force, delayMs); // if entering in call state, handle special case of active streams // pertaining to sonification strategy see handleIncallSonification() if (state == AudioSystem::MODE_IN_CALL) { LOGV("setPhoneState() in call state management: new state is %d", state); // unmute the ringing tone after a sufficient delay if it was muted before // setting output device above if (oldState == AudioSystem::MODE_RINGTONE) { setStreamMute(AudioSystem::RING, false, mHardwareOutput, MUTE_TIME_MS); } for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) { handleIncallSonification(stream, true, true); } } // Flag that ringtone volume must be limited to music volume until we exit MODE_RINGTONE if (state == AudioSystem::MODE_RINGTONE && (hwOutputDesc->mRefCount[AudioSystem::MUSIC] || (systemTime() - mMusicStopTime) < seconds(SONIFICATION_HEADSET_MUSIC_DELAY))) { mLimitRingtoneVolume = true; } else { mLimitRingtoneVolume = false; } } void AudioPolicyManagerBase::setRingerMode(uint32_t mode, uint32_t mask) { LOGV("setRingerMode() mode %x, mask %x", mode, mask); mRingerMode = mode; } void AudioPolicyManagerBase::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config) { LOGV("setForceUse() usage %d, config %d, mPhoneState %d", usage, config, mPhoneState); switch(usage) { case AudioSystem::FOR_COMMUNICATION: if (config != AudioSystem::FORCE_SPEAKER && config != AudioSystem::FORCE_BT_SCO && config != AudioSystem::FORCE_NONE) { LOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config); return; } mForceUse[usage] = config; break; case AudioSystem::FOR_MEDIA: if (config != AudioSystem::FORCE_HEADPHONES && config != AudioSystem::FORCE_BT_A2DP && config != AudioSystem::FORCE_WIRED_ACCESSORY && config != AudioSystem::FORCE_NONE) { LOGW("setForceUse() invalid config %d for FOR_MEDIA", config); return; } mForceUse[usage] = config; break; case AudioSystem::FOR_RECORD: if (config != AudioSystem::FORCE_BT_SCO && config != AudioSystem::FORCE_WIRED_ACCESSORY && config != AudioSystem::FORCE_NONE) { LOGW("setForceUse() invalid config %d for FOR_RECORD", config); return; } mForceUse[usage] = config; break; case AudioSystem::FOR_DOCK: if (config != AudioSystem::FORCE_NONE && config != AudioSystem::FORCE_BT_CAR_DOCK && config != AudioSystem::FORCE_BT_DESK_DOCK && config != AudioSystem::FORCE_WIRED_ACCESSORY) { LOGW("setForceUse() invalid config %d for FOR_DOCK", config); } mForceUse[usage] = config; break; default: LOGW("setForceUse() invalid usage %d", usage); break; } // check for device and output changes triggered by new phone state uint32_t newDevice = getNewDevice(mHardwareOutput, false); #ifdef WITH_A2DP checkOutputForAllStrategies(newDevice); #endif updateDeviceForStrategy(); setOutputDevice(mHardwareOutput, newDevice); } AudioSystem::forced_config AudioPolicyManagerBase::getForceUse(AudioSystem::force_use usage) { return mForceUse[usage]; } void AudioPolicyManagerBase::setSystemProperty(const char* property, const char* value) { LOGV("setSystemProperty() property %s, value %s", property, value); if (strcmp(property, "ro.camera.sound.forced") == 0) { if (atoi(value)) { LOGV("ENFORCED_AUDIBLE cannot be muted"); mStreams[AudioSystem::ENFORCED_AUDIBLE].mCanBeMuted = false; } else { LOGV("ENFORCED_AUDIBLE can be muted"); mStreams[AudioSystem::ENFORCED_AUDIBLE].mCanBeMuted = true; } } } audio_io_handle_t AudioPolicyManagerBase::getOutput(AudioSystem::stream_type stream, uint32_t samplingRate, uint32_t format, uint32_t channels, AudioSystem::output_flags flags) { audio_io_handle_t output = 0; uint32_t latency = 0; routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream); uint32_t device = getDeviceForStrategy(strategy); LOGV("getOutput() stream %d, samplingRate %d, format %d, channels %x, flags %x", stream, samplingRate, format, channels, flags); #ifdef AUDIO_POLICY_TEST if (mCurOutput != 0) { LOGV("getOutput() test output mCurOutput %d, samplingRate %d, format %d, channels %x, mDirectOutput %d", mCurOutput, mTestSamplingRate, mTestFormat, mTestChannels, mDirectOutput); if (mTestOutputs[mCurOutput] == 0) { LOGV("getOutput() opening test output"); AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(); outputDesc->mDevice = mTestDevice; outputDesc->mSamplingRate = mTestSamplingRate; outputDesc->mFormat = mTestFormat; outputDesc->mChannels = mTestChannels; outputDesc->mLatency = mTestLatencyMs; outputDesc->mFlags = (AudioSystem::output_flags)(mDirectOutput ? AudioSystem::OUTPUT_FLAG_DIRECT : 0); outputDesc->mRefCount[stream] = 0; mTestOutputs[mCurOutput] = mpClientInterface->openOutput(&outputDesc->mDevice, &outputDesc->mSamplingRate, &outputDesc->mFormat, &outputDesc->mChannels, &outputDesc->mLatency, outputDesc->mFlags); if (mTestOutputs[mCurOutput]) { AudioParameter outputCmd = AudioParameter(); outputCmd.addInt(String8("set_id"),mCurOutput); mpClientInterface->setParameters(mTestOutputs[mCurOutput],outputCmd.toString()); addOutput(mTestOutputs[mCurOutput], outputDesc); } } return mTestOutputs[mCurOutput]; } #endif //AUDIO_POLICY_TEST // open a direct output if: // 1 a direct output is explicitely requested // 2 the audio format is compressed if ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) || (format !=0 && !AudioSystem::isLinearPCM(format))) { LOGV("getOutput() opening direct output device %x", device); AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(); outputDesc->mDevice = device; outputDesc->mSamplingRate = samplingRate; outputDesc->mFormat = format; outputDesc->mChannels = channels; outputDesc->mLatency = 0; outputDesc->mFlags = (AudioSystem::output_flags)(flags | AudioSystem::OUTPUT_FLAG_DIRECT); outputDesc->mRefCount[stream] = 1; output = mpClientInterface->openOutput(&outputDesc->mDevice, &outputDesc->mSamplingRate, &outputDesc->mFormat, &outputDesc->mChannels, &outputDesc->mLatency, outputDesc->mFlags); // only accept an output with the requeted parameters if (output == 0 || (samplingRate != 0 && samplingRate != outputDesc->mSamplingRate) || (format != 0 && format != outputDesc->mFormat) || (channels != 0 && channels != outputDesc->mChannels)) { LOGV("getOutput() failed opening direct output: samplingRate %d, format %d, channels %d", samplingRate, format, channels); if (output != 0) { mpClientInterface->closeOutput(output); } delete outputDesc; return 0; } addOutput(output, outputDesc); return output; } if (channels != 0 && channels != AudioSystem::CHANNEL_OUT_MONO && channels != AudioSystem::CHANNEL_OUT_STEREO) { return 0; } // open a non direct output // get which output is suitable for the specified stream. The actual routing change will happen // when startOutput() will be called uint32_t a2dpDevice = device & AudioSystem::DEVICE_OUT_ALL_A2DP; if (AudioSystem::popCount((AudioSystem::audio_devices)device) == 2) { #ifdef WITH_A2DP if (a2dpUsedForSonification() && a2dpDevice != 0) { // if playing on 2 devices among which one is A2DP, use duplicated output LOGV("getOutput() using duplicated output"); LOGW_IF((mA2dpOutput == 0), "getOutput() A2DP device in multiple %x selected but A2DP output not opened", device); output = mDuplicatedOutput; } else #endif { // if playing on 2 devices among which none is A2DP, use hardware output output = mHardwareOutput; } LOGV("getOutput() using output %d for 2 devices %x", output, device); } else { #ifdef WITH_A2DP if (a2dpDevice != 0) { // if playing on A2DP device, use a2dp output LOGW_IF((mA2dpOutput == 0), "getOutput() A2DP device %x selected but A2DP output not opened", device); output = mA2dpOutput; } else #endif { // if playing on not A2DP device, use hardware output output = mHardwareOutput; } } LOGW_IF((output ==0), "getOutput() could not find output for stream %d, samplingRate %d, format %d, channels %x, flags %x", stream, samplingRate, format, channels, flags); return output; } status_t AudioPolicyManagerBase::startOutput(audio_io_handle_t output, AudioSystem::stream_type stream) { LOGV("startOutput() output %d, stream %d", output, stream); ssize_t index = mOutputs.indexOfKey(output); if (index < 0) { LOGW("startOutput() unknow output %d", output); return BAD_VALUE; } AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index); routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream); #ifdef WITH_A2DP if (mA2dpOutput != 0 && !a2dpUsedForSonification() && strategy == STRATEGY_SONIFICATION) { setStrategyMute(STRATEGY_MEDIA, true, mA2dpOutput); } #endif // incremenent usage count for this stream on the requested output: // NOTE that the usage count is the same for duplicated output and hardware output which is // necassary for a correct control of hardware output routing by startOutput() and stopOutput() outputDesc->changeRefCount(stream, 1); setOutputDevice(output, getNewDevice(output)); // handle special case for sonification while in call if (mPhoneState == AudioSystem::MODE_IN_CALL) { handleIncallSonification(stream, true, false); } // apply volume rules for current stream and device if necessary checkAndSetVolume(stream, mStreams[stream].mIndexCur, output, outputDesc->device()); return NO_ERROR; } status_t AudioPolicyManagerBase::stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream) { LOGV("stopOutput() output %d, stream %d", output, stream); ssize_t index = mOutputs.indexOfKey(output); if (index < 0) { LOGW("stopOutput() unknow output %d", output); return BAD_VALUE; } AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index); routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream); // handle special case for sonification while in call if (mPhoneState == AudioSystem::MODE_IN_CALL) { handleIncallSonification(stream, false, false); } if (outputDesc->mRefCount[stream] > 0) { // decrement usage count of this stream on the output outputDesc->changeRefCount(stream, -1); // store time at which the last music track was stopped - see computeVolume() if (stream == AudioSystem::MUSIC) { mMusicStopTime = systemTime(); } setOutputDevice(output, getNewDevice(output)); #ifdef WITH_A2DP if (mA2dpOutput != 0 && !a2dpUsedForSonification() && strategy == STRATEGY_SONIFICATION) { setStrategyMute(STRATEGY_MEDIA, false, mA2dpOutput, mOutputs.valueFor(mHardwareOutput)->mLatency*2); } #endif return NO_ERROR; } else { LOGW("stopOutput() refcount is already 0 for output %d", output); return INVALID_OPERATION; } } void AudioPolicyManagerBase::releaseOutput(audio_io_handle_t output) { LOGV("releaseOutput() %d", output); ssize_t index = mOutputs.indexOfKey(output); if (index < 0) { LOGW("releaseOutput() releasing unknown output %d", output); return; } #ifdef AUDIO_POLICY_TEST int testIndex = testOutputIndex(output); if (testIndex != 0) { AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index); if (outputDesc->refCount() == 0) { mpClientInterface->closeOutput(output); delete mOutputs.valueAt(index); mOutputs.removeItem(output); mTestOutputs[testIndex] = 0; } return; } #endif //AUDIO_POLICY_TEST if (mOutputs.valueAt(index)->mFlags & AudioSystem::OUTPUT_FLAG_DIRECT) { mpClientInterface->closeOutput(output); delete mOutputs.valueAt(index); mOutputs.removeItem(output); } } audio_io_handle_t AudioPolicyManagerBase::getInput(int inputSource, uint32_t samplingRate, uint32_t format, uint32_t channels, AudioSystem::audio_in_acoustics acoustics) { audio_io_handle_t input = 0; uint32_t device = getDeviceForInputSource(inputSource); LOGV("getInput() inputSource %d, samplingRate %d, format %d, channels %x, acoustics %x", inputSource, samplingRate, format, channels, acoustics); if (device == 0) { return 0; } // adapt channel selection to input source switch(inputSource) { case AUDIO_SOURCE_VOICE_UPLINK: channels = AudioSystem::CHANNEL_IN_VOICE_UPLINK; break; case AUDIO_SOURCE_VOICE_DOWNLINK: channels = AudioSystem::CHANNEL_IN_VOICE_DNLINK; break; case AUDIO_SOURCE_VOICE_CALL: channels = (AudioSystem::CHANNEL_IN_VOICE_UPLINK | AudioSystem::CHANNEL_IN_VOICE_DNLINK); break; default: break; } AudioInputDescriptor *inputDesc = new AudioInputDescriptor(); inputDesc->mInputSource = inputSource; inputDesc->mDevice = device; inputDesc->mSamplingRate = samplingRate; inputDesc->mFormat = format; inputDesc->mChannels = channels; inputDesc->mAcoustics = acoustics; inputDesc->mRefCount = 0; input = mpClientInterface->openInput(&inputDesc->mDevice, &inputDesc->mSamplingRate, &inputDesc->mFormat, &inputDesc->mChannels, inputDesc->mAcoustics); // only accept input with the exact requested set of parameters if (input == 0 || (samplingRate != inputDesc->mSamplingRate) || (format != inputDesc->mFormat) || (channels != inputDesc->mChannels)) { LOGV("getInput() failed opening input: samplingRate %d, format %d, channels %d", samplingRate, format, channels); if (input != 0) { mpClientInterface->closeInput(input); } delete inputDesc; return 0; } mInputs.add(input, inputDesc); return input; } status_t AudioPolicyManagerBase::startInput(audio_io_handle_t input) { LOGV("startInput() input %d", input); ssize_t index = mInputs.indexOfKey(input); if (index < 0) { LOGW("startInput() unknow input %d", input); return BAD_VALUE; } AudioInputDescriptor *inputDesc = mInputs.valueAt(index); #ifdef AUDIO_POLICY_TEST if (mTestInput == 0) #endif //AUDIO_POLICY_TEST { // refuse 2 active AudioRecord clients at the same time if (getActiveInput() != 0) { LOGW("startInput() input %d failed: other input already started", input); return INVALID_OPERATION; } } AudioParameter param = AudioParameter(); param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice); // use Voice Recognition mode or not for this input based on input source int vr_enabled = inputDesc->mInputSource == AUDIO_SOURCE_VOICE_RECOGNITION ? 1 : 0; param.addInt(String8("vr_mode"), vr_enabled); LOGV("AudioPolicyManager::startInput(%d), setting vr_mode to %d", inputDesc->mInputSource, vr_enabled); mpClientInterface->setParameters(input, param.toString()); inputDesc->mRefCount = 1; return NO_ERROR; } status_t AudioPolicyManagerBase::stopInput(audio_io_handle_t input) { LOGV("stopInput() input %d", input); ssize_t index = mInputs.indexOfKey(input); if (index < 0) { LOGW("stopInput() unknow input %d", input); return BAD_VALUE; } AudioInputDescriptor *inputDesc = mInputs.valueAt(index); if (inputDesc->mRefCount == 0) { LOGW("stopInput() input %d already stopped", input); return INVALID_OPERATION; } else { AudioParameter param = AudioParameter(); param.addInt(String8(AudioParameter::keyRouting), 0); mpClientInterface->setParameters(input, param.toString()); inputDesc->mRefCount = 0; return NO_ERROR; } } void AudioPolicyManagerBase::releaseInput(audio_io_handle_t input) { LOGV("releaseInput() %d", input); ssize_t index = mInputs.indexOfKey(input); if (index < 0) { LOGW("releaseInput() releasing unknown input %d", input); return; } mpClientInterface->closeInput(input); delete mInputs.valueAt(index); mInputs.removeItem(input); LOGV("releaseInput() exit"); } void AudioPolicyManagerBase::initStreamVolume(AudioSystem::stream_type stream, int indexMin, int indexMax) { LOGV("initStreamVolume() stream %d, min %d, max %d", stream , indexMin, indexMax); if (indexMin < 0 || indexMin >= indexMax) { LOGW("initStreamVolume() invalid index limits for stream %d, min %d, max %d", stream , indexMin, indexMax); return; } mStreams[stream].mIndexMin = indexMin; mStreams[stream].mIndexMax = indexMax; } status_t AudioPolicyManagerBase::setStreamVolumeIndex(AudioSystem::stream_type stream, int index) { if ((index < mStreams[stream].mIndexMin) || (index > mStreams[stream].mIndexMax)) { return BAD_VALUE; } // Force max volume if stream cannot be muted if (!mStreams[stream].mCanBeMuted) index = mStreams[stream].mIndexMax; LOGV("setStreamVolumeIndex() stream %d, index %d", stream, index); mStreams[stream].mIndexCur = index; // compute and apply stream volume on all outputs according to connected device status_t status = NO_ERROR; for (size_t i = 0; i < mOutputs.size(); i++) { status_t volStatus = checkAndSetVolume(stream, index, mOutputs.keyAt(i), mOutputs.valueAt(i)->device()); if (volStatus != NO_ERROR) { status = volStatus; } } return status; } status_t AudioPolicyManagerBase::getStreamVolumeIndex(AudioSystem::stream_type stream, int *index) { if (index == 0) { return BAD_VALUE; } LOGV("getStreamVolumeIndex() stream %d", stream); *index = mStreams[stream].mIndexCur; return NO_ERROR; } status_t AudioPolicyManagerBase::dump(int fd) { const size_t SIZE = 256; char buffer[SIZE]; String8 result; snprintf(buffer, SIZE, "\nAudioPolicyManager Dump: %p\n", this); result.append(buffer); snprintf(buffer, SIZE, " Hardware Output: %d\n", mHardwareOutput); result.append(buffer); #ifdef WITH_A2DP snprintf(buffer, SIZE, " A2DP Output: %d\n", mA2dpOutput); result.append(buffer); snprintf(buffer, SIZE, " Duplicated Output: %d\n", mDuplicatedOutput); result.append(buffer); snprintf(buffer, SIZE, " A2DP device address: %s\n", mA2dpDeviceAddress.string()); result.append(buffer); #endif snprintf(buffer, SIZE, " SCO device address: %s\n", mScoDeviceAddress.string()); result.append(buffer); snprintf(buffer, SIZE, " Output devices: %08x\n", mAvailableOutputDevices); result.append(buffer); snprintf(buffer, SIZE, " Input devices: %08x\n", mAvailableInputDevices); result.append(buffer); snprintf(buffer, SIZE, " Phone state: %d\n", mPhoneState); result.append(buffer); snprintf(buffer, SIZE, " Ringer mode: %d\n", mRingerMode); result.append(buffer); snprintf(buffer, SIZE, " Force use for communications %d\n", mForceUse[AudioSystem::FOR_COMMUNICATION]); result.append(buffer); snprintf(buffer, SIZE, " Force use for media %d\n", mForceUse[AudioSystem::FOR_MEDIA]); result.append(buffer); snprintf(buffer, SIZE, " Force use for record %d\n", mForceUse[AudioSystem::FOR_RECORD]); result.append(buffer); snprintf(buffer, SIZE, " Force use for dock %d\n", mForceUse[AudioSystem::FOR_DOCK]); result.append(buffer); write(fd, result.string(), result.size()); snprintf(buffer, SIZE, "\nOutputs dump:\n"); write(fd, buffer, strlen(buffer)); for (size_t i = 0; i < mOutputs.size(); i++) { snprintf(buffer, SIZE, "- Output %d dump:\n", mOutputs.keyAt(i)); write(fd, buffer, strlen(buffer)); mOutputs.valueAt(i)->dump(fd); } snprintf(buffer, SIZE, "\nInputs dump:\n"); write(fd, buffer, strlen(buffer)); for (size_t i = 0; i < mInputs.size(); i++) { snprintf(buffer, SIZE, "- Input %d dump:\n", mInputs.keyAt(i)); write(fd, buffer, strlen(buffer)); mInputs.valueAt(i)->dump(fd); } snprintf(buffer, SIZE, "\nStreams dump:\n"); write(fd, buffer, strlen(buffer)); snprintf(buffer, SIZE, " Stream Index Min Index Max Index Cur Can be muted\n"); write(fd, buffer, strlen(buffer)); for (size_t i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) { snprintf(buffer, SIZE, " %02d", i); mStreams[i].dump(buffer + 3, SIZE); write(fd, buffer, strlen(buffer)); } return NO_ERROR; } // ---------------------------------------------------------------------------- // AudioPolicyManagerBase // ---------------------------------------------------------------------------- AudioPolicyManagerBase::AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface) : #ifdef AUDIO_POLICY_TEST Thread(false), #endif //AUDIO_POLICY_TEST mPhoneState(AudioSystem::MODE_NORMAL), mRingerMode(0), mMusicStopTime(0), mLimitRingtoneVolume(false) { mpClientInterface = clientInterface; for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) { mForceUse[i] = AudioSystem::FORCE_NONE; } // devices available by default are speaker, ear piece and microphone mAvailableOutputDevices = AudioSystem::DEVICE_OUT_EARPIECE | AudioSystem::DEVICE_OUT_SPEAKER; mAvailableInputDevices = AudioSystem::DEVICE_IN_BUILTIN_MIC; #ifdef WITH_A2DP mA2dpOutput = 0; mDuplicatedOutput = 0; mA2dpDeviceAddress = String8(""); #endif mScoDeviceAddress = String8(""); // open hardware output AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(); outputDesc->mDevice = (uint32_t)AudioSystem::DEVICE_OUT_SPEAKER; mHardwareOutput = mpClientInterface->openOutput(&outputDesc->mDevice, &outputDesc->mSamplingRate, &outputDesc->mFormat, &outputDesc->mChannels, &outputDesc->mLatency, outputDesc->mFlags); if (mHardwareOutput == 0) { LOGE("Failed to initialize hardware output stream, samplingRate: %d, format %d, channels %d", outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannels); } else { addOutput(mHardwareOutput, outputDesc); setOutputDevice(mHardwareOutput, (uint32_t)AudioSystem::DEVICE_OUT_SPEAKER, true); } updateDeviceForStrategy(); #ifdef AUDIO_POLICY_TEST AudioParameter outputCmd = AudioParameter(); outputCmd.addInt(String8("set_id"), 0); mpClientInterface->setParameters(mHardwareOutput, outputCmd.toString()); mTestDevice = AudioSystem::DEVICE_OUT_SPEAKER; mTestSamplingRate = 44100; mTestFormat = AudioSystem::PCM_16_BIT; mTestChannels = AudioSystem::CHANNEL_OUT_STEREO; mTestLatencyMs = 0; mCurOutput = 0; mDirectOutput = false; for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { mTestOutputs[i] = 0; } const size_t SIZE = 256; char buffer[SIZE]; snprintf(buffer, SIZE, "AudioPolicyManagerTest"); run(buffer, ANDROID_PRIORITY_AUDIO); #endif //AUDIO_POLICY_TEST } AudioPolicyManagerBase::~AudioPolicyManagerBase() { #ifdef AUDIO_POLICY_TEST exit(); #endif //AUDIO_POLICY_TEST for (size_t i = 0; i < mOutputs.size(); i++) { mpClientInterface->closeOutput(mOutputs.keyAt(i)); delete mOutputs.valueAt(i); } mOutputs.clear(); for (size_t i = 0; i < mInputs.size(); i++) { mpClientInterface->closeInput(mInputs.keyAt(i)); delete mInputs.valueAt(i); } mInputs.clear(); } #ifdef AUDIO_POLICY_TEST bool AudioPolicyManagerBase::threadLoop() { LOGV("entering threadLoop()"); while (!exitPending()) { String8 command; int valueInt; String8 value; Mutex::Autolock _l(mLock); mWaitWorkCV.waitRelative(mLock, milliseconds(50)); command = mpClientInterface->getParameters(0, String8("test_cmd_policy")); AudioParameter param = AudioParameter(command); if (param.getInt(String8("test_cmd_policy"), valueInt) == NO_ERROR && valueInt != 0) { LOGV("Test command %s received", command.string()); String8 target; if (param.get(String8("target"), target) != NO_ERROR) { target = "Manager"; } if (param.getInt(String8("test_cmd_policy_output"), valueInt) == NO_ERROR) { param.remove(String8("test_cmd_policy_output")); mCurOutput = valueInt; } if (param.get(String8("test_cmd_policy_direct"), value) == NO_ERROR) { param.remove(String8("test_cmd_policy_direct")); if (value == "false") { mDirectOutput = false; } else if (value == "true") { mDirectOutput = true; } } if (param.getInt(String8("test_cmd_policy_input"), valueInt) == NO_ERROR) { param.remove(String8("test_cmd_policy_input")); mTestInput = valueInt; } if (param.get(String8("test_cmd_policy_format"), value) == NO_ERROR) { param.remove(String8("test_cmd_policy_format")); int format = AudioSystem::INVALID_FORMAT; if (value == "PCM 16 bits") { format = AudioSystem::PCM_16_BIT; } else if (value == "PCM 8 bits") { format = AudioSystem::PCM_8_BIT; } else if (value == "Compressed MP3") { format = AudioSystem::MP3; } if (format != AudioSystem::INVALID_FORMAT) { if (target == "Manager") { mTestFormat = format; } else if (mTestOutputs[mCurOutput] != 0) { AudioParameter outputParam = AudioParameter(); outputParam.addInt(String8("format"), format); mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); } } } if (param.get(String8("test_cmd_policy_channels"), value) == NO_ERROR) { param.remove(String8("test_cmd_policy_channels")); int channels = 0; if (value == "Channels Stereo") { channels = AudioSystem::CHANNEL_OUT_STEREO; } else if (value == "Channels Mono") { channels = AudioSystem::CHANNEL_OUT_MONO; } if (channels != 0) { if (target == "Manager") { mTestChannels = channels; } else if (mTestOutputs[mCurOutput] != 0) { AudioParameter outputParam = AudioParameter(); outputParam.addInt(String8("channels"), channels); mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); } } } if (param.getInt(String8("test_cmd_policy_sampleRate"), valueInt) == NO_ERROR) { param.remove(String8("test_cmd_policy_sampleRate")); if (valueInt >= 0 && valueInt <= 96000) { int samplingRate = valueInt; if (target == "Manager") { mTestSamplingRate = samplingRate; } else if (mTestOutputs[mCurOutput] != 0) { AudioParameter outputParam = AudioParameter(); outputParam.addInt(String8("sampling_rate"), samplingRate); mpClientInterface->setParameters(mTestOutputs[mCurOutput], outputParam.toString()); } } } if (param.get(String8("test_cmd_policy_reopen"), value) == NO_ERROR) { param.remove(String8("test_cmd_policy_reopen")); mpClientInterface->closeOutput(mHardwareOutput); delete mOutputs.valueFor(mHardwareOutput); mOutputs.removeItem(mHardwareOutput); AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(); outputDesc->mDevice = (uint32_t)AudioSystem::DEVICE_OUT_SPEAKER; mHardwareOutput = mpClientInterface->openOutput(&outputDesc->mDevice, &outputDesc->mSamplingRate, &outputDesc->mFormat, &outputDesc->mChannels, &outputDesc->mLatency, outputDesc->mFlags); if (mHardwareOutput == 0) { LOGE("Failed to reopen hardware output stream, samplingRate: %d, format %d, channels %d", outputDesc->mSamplingRate, outputDesc->mFormat, outputDesc->mChannels); } else { AudioParameter outputCmd = AudioParameter(); outputCmd.addInt(String8("set_id"), 0); mpClientInterface->setParameters(mHardwareOutput, outputCmd.toString()); addOutput(mHardwareOutput, outputDesc); } } mpClientInterface->setParameters(0, String8("test_cmd_policy=")); } } return false; } void AudioPolicyManagerBase::exit() { { AutoMutex _l(mLock); requestExit(); mWaitWorkCV.signal(); } requestExitAndWait(); } int AudioPolicyManagerBase::testOutputIndex(audio_io_handle_t output) { for (int i = 0; i < NUM_TEST_OUTPUTS; i++) { if (output == mTestOutputs[i]) return i; } return 0; } #endif //AUDIO_POLICY_TEST // --- void AudioPolicyManagerBase::addOutput(audio_io_handle_t id, AudioOutputDescriptor *outputDesc) { outputDesc->mId = id; mOutputs.add(id, outputDesc); } #ifdef WITH_A2DP status_t AudioPolicyManagerBase::handleA2dpConnection(AudioSystem::audio_devices device, const char *device_address) { // when an A2DP device is connected, open an A2DP and a duplicated output LOGV("opening A2DP output for device %s", device_address); AudioOutputDescriptor *outputDesc = new AudioOutputDescriptor(); outputDesc->mDevice = device; mA2dpOutput = mpClientInterface->openOutput(&outputDesc->mDevice, &outputDesc->mSamplingRate, &outputDesc->mFormat, &outputDesc->mChannels, &outputDesc->mLatency, outputDesc->mFlags); if (mA2dpOutput) { // add A2DP output descriptor addOutput(mA2dpOutput, outputDesc); // set initial stream volume for A2DP device applyStreamVolumes(mA2dpOutput, device); if (a2dpUsedForSonification()) { mDuplicatedOutput = mpClientInterface->openDuplicateOutput(mA2dpOutput, mHardwareOutput); } if (mDuplicatedOutput != 0 || !a2dpUsedForSonification()) { // If both A2DP and duplicated outputs are open, send device address to A2DP hardware // interface AudioParameter param; param.add(String8("a2dp_sink_address"), String8(device_address)); mpClientInterface->setParameters(mA2dpOutput, param.toString()); mA2dpDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN); if (a2dpUsedForSonification()) { // add duplicated output descriptor AudioOutputDescriptor *dupOutputDesc = new AudioOutputDescriptor(); dupOutputDesc->mOutput1 = mOutputs.valueFor(mHardwareOutput); dupOutputDesc->mOutput2 = mOutputs.valueFor(mA2dpOutput); dupOutputDesc->mSamplingRate = outputDesc->mSamplingRate; dupOutputDesc->mFormat = outputDesc->mFormat; dupOutputDesc->mChannels = outputDesc->mChannels; dupOutputDesc->mLatency = outputDesc->mLatency; addOutput(mDuplicatedOutput, dupOutputDesc); applyStreamVolumes(mDuplicatedOutput, device); } } else { LOGW("getOutput() could not open duplicated output for %d and %d", mHardwareOutput, mA2dpOutput); mpClientInterface->closeOutput(mA2dpOutput); mOutputs.removeItem(mA2dpOutput); mA2dpOutput = 0; delete outputDesc; return NO_INIT; } } else { LOGW("setDeviceConnectionState() could not open A2DP output for device %x", device); delete outputDesc; return NO_INIT; } AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mHardwareOutput); if (mScoDeviceAddress != "") { // It is normal to suspend twice if we are both in call, // and have the hardware audio output routed to BT SCO if (mPhoneState != AudioSystem::MODE_NORMAL) { mpClientInterface->suspendOutput(mA2dpOutput); } if (AudioSystem::isBluetoothScoDevice((AudioSystem::audio_devices)hwOutputDesc->device())) { mpClientInterface->suspendOutput(mA2dpOutput); } } if (!a2dpUsedForSonification()) { // mute music on A2DP output if a notification or ringtone is playing uint32_t refCount = hwOutputDesc->strategyRefCount(STRATEGY_SONIFICATION); for (uint32_t i = 0; i < refCount; i++) { setStrategyMute(STRATEGY_MEDIA, true, mA2dpOutput); } } return NO_ERROR; } status_t AudioPolicyManagerBase::handleA2dpDisconnection(AudioSystem::audio_devices device, const char *device_address) { if (mA2dpOutput == 0) { LOGW("setDeviceConnectionState() disconnecting A2DP and no A2DP output!"); return INVALID_OPERATION; } if (mA2dpDeviceAddress != device_address) { LOGW("setDeviceConnectionState() disconnecting unknow A2DP sink address %s", device_address); return INVALID_OPERATION; } // mute media strategy to avoid outputting sound on hardware output while music stream // is switched from A2DP output and before music is paused by music application setStrategyMute(STRATEGY_MEDIA, true, mHardwareOutput); setStrategyMute(STRATEGY_MEDIA, false, mHardwareOutput, MUTE_TIME_MS); if (!a2dpUsedForSonification()) { // unmute music on A2DP output if a notification or ringtone is playing uint32_t refCount = mOutputs.valueFor(mHardwareOutput)->strategyRefCount(STRATEGY_SONIFICATION); for (uint32_t i = 0; i < refCount; i++) { setStrategyMute(STRATEGY_MEDIA, false, mA2dpOutput); } } mA2dpDeviceAddress = ""; return NO_ERROR; } void AudioPolicyManagerBase::closeA2dpOutputs() { LOGV("setDeviceConnectionState() closing A2DP and duplicated output!"); if (mDuplicatedOutput != 0) { mpClientInterface->closeOutput(mDuplicatedOutput); delete mOutputs.valueFor(mDuplicatedOutput); mOutputs.removeItem(mDuplicatedOutput); mDuplicatedOutput = 0; } if (mA2dpOutput != 0) { AudioParameter param; param.add(String8("closing"), String8("true")); mpClientInterface->setParameters(mA2dpOutput, param.toString()); mpClientInterface->closeOutput(mA2dpOutput); delete mOutputs.valueFor(mA2dpOutput); mOutputs.removeItem(mA2dpOutput); mA2dpOutput = 0; } } void AudioPolicyManagerBase::checkOutputForStrategy(routing_strategy strategy, uint32_t &newDevice) { uint32_t prevDevice = getDeviceForStrategy(strategy); uint32_t curDevice = getDeviceForStrategy(strategy, false); bool a2dpWasUsed = AudioSystem::isA2dpDevice((AudioSystem::audio_devices)(prevDevice & ~AudioSystem::DEVICE_OUT_SPEAKER)); bool a2dpIsUsed = AudioSystem::isA2dpDevice((AudioSystem::audio_devices)(curDevice & ~AudioSystem::DEVICE_OUT_SPEAKER)); AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mHardwareOutput); AudioOutputDescriptor *a2dpOutputDesc; if (a2dpWasUsed && !a2dpIsUsed) { bool dupUsed = a2dpUsedForSonification() && a2dpWasUsed && (AudioSystem::popCount(prevDevice) == 2); if (dupUsed) { LOGV("checkOutputForStrategy() moving strategy %d to duplicated", strategy); a2dpOutputDesc = mOutputs.valueFor(mDuplicatedOutput); } else { LOGV("checkOutputForStrategy() moving strategy %d to a2dp", strategy); a2dpOutputDesc = mOutputs.valueFor(mA2dpOutput); } for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) { if (getStrategy((AudioSystem::stream_type)i) == strategy) { mpClientInterface->setStreamOutput((AudioSystem::stream_type)i, mHardwareOutput); int refCount = a2dpOutputDesc->mRefCount[i]; // in the case of duplicated output, the ref count is first incremented // and then decremented on hardware output tus keeping its value hwOutputDesc->changeRefCount((AudioSystem::stream_type)i, refCount); a2dpOutputDesc->changeRefCount((AudioSystem::stream_type)i,-refCount); } } // do not change newDevice is it was already set before this call by a previous call to // getNewDevice() or checkOutputForStrategy() for a strategy with higher priority if (newDevice == 0 && hwOutputDesc->isUsedByStrategy(strategy)) { newDevice = getDeviceForStrategy(strategy, false); } } if (a2dpIsUsed && !a2dpWasUsed) { bool dupUsed = a2dpUsedForSonification() && a2dpIsUsed && (AudioSystem::popCount(curDevice) == 2); audio_io_handle_t a2dpOutput; if (dupUsed) { LOGV("checkOutputForStrategy() moving strategy %d from duplicated", strategy); a2dpOutputDesc = mOutputs.valueFor(mDuplicatedOutput); a2dpOutput = mDuplicatedOutput; } else { LOGV("checkOutputForStrategy() moving strategy %d from a2dp", strategy); a2dpOutputDesc = mOutputs.valueFor(mA2dpOutput); a2dpOutput = mA2dpOutput; } for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) { if (getStrategy((AudioSystem::stream_type)i) == strategy) { mpClientInterface->setStreamOutput((AudioSystem::stream_type)i, a2dpOutput); int refCount = hwOutputDesc->mRefCount[i]; // in the case of duplicated output, the ref count is first incremented // and then decremented on hardware output tus keeping its value a2dpOutputDesc->changeRefCount((AudioSystem::stream_type)i, refCount); hwOutputDesc->changeRefCount((AudioSystem::stream_type)i,-refCount); } } } } void AudioPolicyManagerBase::checkOutputForAllStrategies(uint32_t &newDevice) { // Check strategies in order of priority so that once newDevice is set // for a given strategy it is not modified by subsequent calls to // checkOutputForStrategy() checkOutputForStrategy(STRATEGY_PHONE, newDevice); checkOutputForStrategy(STRATEGY_SONIFICATION, newDevice); checkOutputForStrategy(STRATEGY_MEDIA, newDevice); checkOutputForStrategy(STRATEGY_DTMF, newDevice); } #endif uint32_t AudioPolicyManagerBase::getNewDevice(audio_io_handle_t output, bool fromCache) { uint32_t device = 0; AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output); // check the following by order of priority to request a routing change if necessary: // 1: we are in call or the strategy phone is active on the hardware output: // use device for strategy phone // 2: the strategy sonification is active on the hardware output: // use device for strategy sonification // 3: the strategy media is active on the hardware output: // use device for strategy media // 4: the strategy DTMF is active on the hardware output: // use device for strategy DTMF if (mPhoneState == AudioSystem::MODE_IN_CALL || outputDesc->isUsedByStrategy(STRATEGY_PHONE)) { device = getDeviceForStrategy(STRATEGY_PHONE, fromCache); } else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION)) { device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache); } else if (outputDesc->isUsedByStrategy(STRATEGY_MEDIA)) { device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache); } else if (outputDesc->isUsedByStrategy(STRATEGY_DTMF)) { device = getDeviceForStrategy(STRATEGY_DTMF, fromCache); } LOGV("getNewDevice() selected device %x", device); return device; } AudioPolicyManagerBase::routing_strategy AudioPolicyManagerBase::getStrategy(AudioSystem::stream_type stream) { // stream to strategy mapping switch (stream) { case AudioSystem::VOICE_CALL: case AudioSystem::BLUETOOTH_SCO: return STRATEGY_PHONE; case AudioSystem::RING: case AudioSystem::NOTIFICATION: case AudioSystem::ALARM: case AudioSystem::ENFORCED_AUDIBLE: return STRATEGY_SONIFICATION; case AudioSystem::DTMF: return STRATEGY_DTMF; default: LOGE("unknown stream type"); case AudioSystem::SYSTEM: // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs // while key clicks are played produces a poor result case AudioSystem::TTS: case AudioSystem::MUSIC: return STRATEGY_MEDIA; } } uint32_t AudioPolicyManagerBase::getDeviceForStrategy(routing_strategy strategy, bool fromCache) { uint32_t device = 0; if (fromCache) { LOGV("getDeviceForStrategy() from cache strategy %d, device %x", strategy, mDeviceForStrategy[strategy]); return mDeviceForStrategy[strategy]; } switch (strategy) { case STRATEGY_DTMF: if (mPhoneState != AudioSystem::MODE_IN_CALL) { // when off call, DTMF strategy follows the same rules as MEDIA strategy device = getDeviceForStrategy(STRATEGY_MEDIA, false); break; } // when in call, DTMF and PHONE strategies follow the same rules // FALL THROUGH case STRATEGY_PHONE: // for phone strategy, we first consider the forced use and then the available devices by order // of priority switch (mForceUse[AudioSystem::FOR_COMMUNICATION]) { case AudioSystem::FORCE_BT_SCO: if (mPhoneState != AudioSystem::MODE_IN_CALL || strategy != STRATEGY_DTMF) { device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT; if (device) break; } device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET; if (device) break; device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO; if (device) break; // if SCO device is requested but no SCO device is available, fall back to default case // FALL THROUGH default: // FORCE_NONE device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADPHONE; if (device) break; device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET; if (device) break; device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_EARPIECE; if (device == 0) { LOGE("getDeviceForStrategy() earpiece device not found"); } break; case AudioSystem::FORCE_SPEAKER: if (mPhoneState != AudioSystem::MODE_IN_CALL || strategy != STRATEGY_DTMF) { device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT; if (device) break; } device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER; if (device == 0) { LOGE("getDeviceForStrategy() speaker device not found"); } break; } break; case STRATEGY_SONIFICATION: // If incall, just select the STRATEGY_PHONE device: The rest of the behavior is handled by // handleIncallSonification(). if (mPhoneState == AudioSystem::MODE_IN_CALL) { device = getDeviceForStrategy(STRATEGY_PHONE, false); break; } device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER; if (device == 0) { LOGE("getDeviceForStrategy() speaker device not found"); } // The second device used for sonification is the same as the device used by media strategy // FALL THROUGH case STRATEGY_MEDIA: { uint32_t device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL; #ifdef WITH_A2DP if (mA2dpOutput != 0) { if (strategy == STRATEGY_SONIFICATION && !a2dpUsedForSonification()) { break; } if (device2 == 0) { device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP; } if (device2 == 0) { device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; } if (device2 == 0) { device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; } } #endif if (device2 == 0) { device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADPHONE; } if (device2 == 0) { device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET; } if (device2 == 0) { device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER; } // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION, 0 otherwise device |= device2; if (device == 0) { LOGE("getDeviceForStrategy() speaker device not found"); } } break; default: LOGW("getDeviceForStrategy() unknown strategy: %d", strategy); break; } LOGV("getDeviceForStrategy() strategy %d, device %x", strategy, device); return device; } void AudioPolicyManagerBase::updateDeviceForStrategy() { for (int i = 0; i < NUM_STRATEGIES; i++) { mDeviceForStrategy[i] = getDeviceForStrategy((routing_strategy)i, false); } } void AudioPolicyManagerBase::setOutputDevice(audio_io_handle_t output, uint32_t device, bool force, int delayMs) { LOGV("setOutputDevice() output %d device %x delayMs %d", output, device, delayMs); AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output); if (outputDesc->isDuplicated()) { setOutputDevice(outputDesc->mOutput1->mId, device, force, delayMs); setOutputDevice(outputDesc->mOutput2->mId, device, force, delayMs); return; } #ifdef WITH_A2DP // filter devices according to output selected if (output == mHardwareOutput) { device &= ~AudioSystem::DEVICE_OUT_ALL_A2DP; } else { device &= AudioSystem::DEVICE_OUT_ALL_A2DP; } #endif uint32_t prevDevice = (uint32_t)outputDesc->device(); // Do not change the routing if: // - the requestede device is 0 // - the requested device is the same as current device and force is not specified. // Doing this check here allows the caller to call setOutputDevice() without conditions if (device == 0 || (device == prevDevice && !force)) { LOGV("setOutputDevice() setting same device %x or null device for output %d", device, output); return; } outputDesc->mDevice = device; // mute media streams if both speaker and headset are selected if (output == mHardwareOutput && AudioSystem::popCount(device) == 2) { setStrategyMute(STRATEGY_MEDIA, true, output); // wait for the PCM output buffers to empty before proceeding with the rest of the command usleep(outputDesc->mLatency*2*1000); } #ifdef WITH_A2DP // suspend A2DP output if SCO device is selected if (AudioSystem::isBluetoothScoDevice((AudioSystem::audio_devices)device)) { if (mA2dpOutput != 0) { mpClientInterface->suspendOutput(mA2dpOutput); } } #endif // do the routing AudioParameter param = AudioParameter(); param.addInt(String8(AudioParameter::keyRouting), (int)device); mpClientInterface->setParameters(mHardwareOutput, param.toString(), delayMs); // update stream volumes according to new device applyStreamVolumes(output, device, delayMs); #ifdef WITH_A2DP // if disconnecting SCO device, restore A2DP output if (AudioSystem::isBluetoothScoDevice((AudioSystem::audio_devices)prevDevice)) { if (mA2dpOutput != 0) { LOGV("restore A2DP output"); mpClientInterface->restoreOutput(mA2dpOutput); } } #endif // if changing from a combined headset + speaker route, unmute media streams if (output == mHardwareOutput && AudioSystem::popCount(prevDevice) == 2) { setStrategyMute(STRATEGY_MEDIA, false, output, delayMs); } } uint32_t AudioPolicyManagerBase::getDeviceForInputSource(int inputSource) { uint32_t device; switch(inputSource) { case AUDIO_SOURCE_DEFAULT: case AUDIO_SOURCE_MIC: case AUDIO_SOURCE_VOICE_RECOGNITION: if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO && mAvailableInputDevices & AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET) { device = AudioSystem::DEVICE_IN_BLUETOOTH_SCO_HEADSET; } else if (mAvailableInputDevices & AudioSystem::DEVICE_IN_WIRED_HEADSET) { device = AudioSystem::DEVICE_IN_WIRED_HEADSET; } else { device = AudioSystem::DEVICE_IN_BUILTIN_MIC; } break; case AUDIO_SOURCE_CAMCORDER: if (hasBackMicrophone()) { device = AudioSystem::DEVICE_IN_BACK_MIC; } else { device = AudioSystem::DEVICE_IN_BUILTIN_MIC; } break; case AUDIO_SOURCE_VOICE_UPLINK: case AUDIO_SOURCE_VOICE_DOWNLINK: case AUDIO_SOURCE_VOICE_CALL: device = AudioSystem::DEVICE_IN_VOICE_CALL; break; default: LOGW("getInput() invalid input source %d", inputSource); device = 0; break; } LOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device); return device; } audio_io_handle_t AudioPolicyManagerBase::getActiveInput() { for (size_t i = 0; i < mInputs.size(); i++) { if (mInputs.valueAt(i)->mRefCount > 0) { return mInputs.keyAt(i); } } return 0; } float AudioPolicyManagerBase::computeVolume(int stream, int index, audio_io_handle_t output, uint32_t device) { float volume = 1.0; AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output); StreamDescriptor &streamDesc = mStreams[stream]; if (device == 0) { device = outputDesc->device(); } int volInt = (100 * (index - streamDesc.mIndexMin)) / (streamDesc.mIndexMax - streamDesc.mIndexMin); volume = AudioSystem::linearToLog(volInt); // if a heaset is connected, apply the following rules to ring tones and notifications // to avoid sound level bursts in user's ears: // - always attenuate ring tones and notifications volume by 6dB // - if music is playing, always limit the volume to current music volume, // with a minimum threshold at -36dB so that notification is always perceived. if ((device & (AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP | AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES | AudioSystem::DEVICE_OUT_WIRED_HEADSET | AudioSystem::DEVICE_OUT_WIRED_HEADPHONE)) && (getStrategy((AudioSystem::stream_type)stream) == STRATEGY_SONIFICATION) && streamDesc.mCanBeMuted) { volume *= SONIFICATION_HEADSET_VOLUME_FACTOR; // when the phone is ringing we must consider that music could have been paused just before // by the music application and behave as if music was active if the last music track was // just stopped if (outputDesc->mRefCount[AudioSystem::MUSIC] || mLimitRingtoneVolume) { float musicVol = computeVolume(AudioSystem::MUSIC, mStreams[AudioSystem::MUSIC].mIndexCur, output, device); float minVol = (musicVol > SONIFICATION_HEADSET_VOLUME_MIN) ? musicVol : SONIFICATION_HEADSET_VOLUME_MIN; if (volume > minVol) { volume = minVol; LOGV("computeVolume limiting volume to %f musicVol %f", minVol, musicVol); } } } return volume; } status_t AudioPolicyManagerBase::checkAndSetVolume(int stream, int index, audio_io_handle_t output, uint32_t device, int delayMs, bool force) { // do not change actual stream volume if the stream is muted if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) { LOGV("checkAndSetVolume() stream %d muted count %d", stream, mOutputs.valueFor(output)->mMuteCount[stream]); return NO_ERROR; } // do not change in call volume if bluetooth is connected and vice versa if ((stream == AudioSystem::VOICE_CALL && mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) || (stream == AudioSystem::BLUETOOTH_SCO && mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO)) { LOGV("checkAndSetVolume() cannot set stream %d volume with force use = %d for comm", stream, mForceUse[AudioSystem::FOR_COMMUNICATION]); return INVALID_OPERATION; } float volume = computeVolume(stream, index, output, device); // do not set volume if the float value did not change if (volume != mOutputs.valueFor(output)->mCurVolume[stream] || force) { mOutputs.valueFor(output)->mCurVolume[stream] = volume; LOGV("setStreamVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs); if (stream == AudioSystem::VOICE_CALL || stream == AudioSystem::DTMF || stream == AudioSystem::BLUETOOTH_SCO) { float voiceVolume = -1.0; // offset value to reflect actual hardware volume that never reaches 0 // 1% corresponds roughly to first step in VOICE_CALL stream volume setting (see AudioService.java) volume = 0.01 + 0.99 * volume; if (stream == AudioSystem::VOICE_CALL) { voiceVolume = (float)index/(float)mStreams[stream].mIndexMax; } else if (stream == AudioSystem::BLUETOOTH_SCO) { voiceVolume = 1.0; } if (voiceVolume >= 0 && output == mHardwareOutput) { mpClientInterface->setVoiceVolume(voiceVolume, delayMs); } } mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream, volume, output, delayMs); } return NO_ERROR; } void AudioPolicyManagerBase::applyStreamVolumes(audio_io_handle_t output, uint32_t device, int delayMs) { LOGV("applyStreamVolumes() for output %d and device %x", output, device); for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) { checkAndSetVolume(stream, mStreams[stream].mIndexCur, output, device, delayMs); } } void AudioPolicyManagerBase::setStrategyMute(routing_strategy strategy, bool on, audio_io_handle_t output, int delayMs) { LOGV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output); for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) { if (getStrategy((AudioSystem::stream_type)stream) == strategy) { setStreamMute(stream, on, output, delayMs); } } } void AudioPolicyManagerBase::setStreamMute(int stream, bool on, audio_io_handle_t output, int delayMs) { StreamDescriptor &streamDesc = mStreams[stream]; AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output); LOGV("setStreamMute() stream %d, mute %d, output %d, mMuteCount %d", stream, on, output, outputDesc->mMuteCount[stream]); if (on) { if (outputDesc->mMuteCount[stream] == 0) { if (streamDesc.mCanBeMuted) { checkAndSetVolume(stream, 0, output, outputDesc->device(), delayMs); } } // increment mMuteCount after calling checkAndSetVolume() so that volume change is not ignored outputDesc->mMuteCount[stream]++; } else { if (outputDesc->mMuteCount[stream] == 0) { LOGW("setStreamMute() unmuting non muted stream!"); return; } if (--outputDesc->mMuteCount[stream] == 0) { checkAndSetVolume(stream, streamDesc.mIndexCur, output, outputDesc->device(), delayMs); } } } void AudioPolicyManagerBase::handleIncallSonification(int stream, bool starting, bool stateChange) { // if the stream pertains to sonification strategy and we are in call we must // mute the stream if it is low visibility. If it is high visibility, we must play a tone // in the device used for phone strategy and play the tone if the selected device does not // interfere with the device used for phone strategy // if stateChange is true, we are called from setPhoneState() and we must mute or unmute as // many times as there are active tracks on the output if (getStrategy((AudioSystem::stream_type)stream) == STRATEGY_SONIFICATION) { AudioOutputDescriptor *outputDesc = mOutputs.valueFor(mHardwareOutput); LOGV("handleIncallSonification() stream %d starting %d device %x stateChange %d", stream, starting, outputDesc->mDevice, stateChange); if (outputDesc->mRefCount[stream]) { int muteCount = 1; if (stateChange) { muteCount = outputDesc->mRefCount[stream]; } if (AudioSystem::isLowVisibility((AudioSystem::stream_type)stream)) { LOGV("handleIncallSonification() low visibility, muteCount %d", muteCount); for (int i = 0; i < muteCount; i++) { setStreamMute(stream, starting, mHardwareOutput); } } else { LOGV("handleIncallSonification() high visibility"); if (outputDesc->device() & getDeviceForStrategy(STRATEGY_PHONE)) { LOGV("handleIncallSonification() high visibility muted, muteCount %d", muteCount); for (int i = 0; i < muteCount; i++) { setStreamMute(stream, starting, mHardwareOutput); } } if (starting) { mpClientInterface->startTone(ToneGenerator::TONE_SUP_CALL_WAITING, AudioSystem::VOICE_CALL); } else { mpClientInterface->stopTone(); } } } } } // --- AudioOutputDescriptor class implementation AudioPolicyManagerBase::AudioOutputDescriptor::AudioOutputDescriptor() : mId(0), mSamplingRate(0), mFormat(0), mChannels(0), mLatency(0), mFlags((AudioSystem::output_flags)0), mDevice(0), mOutput1(0), mOutput2(0) { // clear usage count for all stream types for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) { mRefCount[i] = 0; mCurVolume[i] = -1.0; mMuteCount[i] = 0; } } uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::device() { uint32_t device = 0; if (isDuplicated()) { device = mOutput1->mDevice | mOutput2->mDevice; } else { device = mDevice; } return device; } void AudioPolicyManagerBase::AudioOutputDescriptor::changeRefCount(AudioSystem::stream_type stream, int delta) { // forward usage count change to attached outputs if (isDuplicated()) { mOutput1->changeRefCount(stream, delta); mOutput2->changeRefCount(stream, delta); } if ((delta + (int)mRefCount[stream]) < 0) { LOGW("changeRefCount() invalid delta %d for stream %d, refCount %d", delta, stream, mRefCount[stream]); mRefCount[stream] = 0; return; } mRefCount[stream] += delta; LOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]); } uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::refCount() { uint32_t refcount = 0; for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) { refcount += mRefCount[i]; } return refcount; } uint32_t AudioPolicyManagerBase::AudioOutputDescriptor::strategyRefCount(routing_strategy strategy) { uint32_t refCount = 0; for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) { if (getStrategy((AudioSystem::stream_type)i) == strategy) { refCount += mRefCount[i]; } } return refCount; } status_t AudioPolicyManagerBase::AudioOutputDescriptor::dump(int fd) { const size_t SIZE = 256; char buffer[SIZE]; String8 result; snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); result.append(buffer); snprintf(buffer, SIZE, " Format: %d\n", mFormat); result.append(buffer); snprintf(buffer, SIZE, " Channels: %08x\n", mChannels); result.append(buffer); snprintf(buffer, SIZE, " Latency: %d\n", mLatency); result.append(buffer); snprintf(buffer, SIZE, " Flags %08x\n", mFlags); result.append(buffer); snprintf(buffer, SIZE, " Devices %08x\n", device()); result.append(buffer); snprintf(buffer, SIZE, " Stream volume refCount muteCount\n"); result.append(buffer); for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) { snprintf(buffer, SIZE, " %02d %.03f %02d %02d\n", i, mCurVolume[i], mRefCount[i], mMuteCount[i]); result.append(buffer); } write(fd, result.string(), result.size()); return NO_ERROR; } // --- AudioInputDescriptor class implementation AudioPolicyManagerBase::AudioInputDescriptor::AudioInputDescriptor() : mSamplingRate(0), mFormat(0), mChannels(0), mAcoustics((AudioSystem::audio_in_acoustics)0), mDevice(0), mRefCount(0) { } status_t AudioPolicyManagerBase::AudioInputDescriptor::dump(int fd) { const size_t SIZE = 256; char buffer[SIZE]; String8 result; snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate); result.append(buffer); snprintf(buffer, SIZE, " Format: %d\n", mFormat); result.append(buffer); snprintf(buffer, SIZE, " Channels: %08x\n", mChannels); result.append(buffer); snprintf(buffer, SIZE, " Acoustics %08x\n", mAcoustics); result.append(buffer); snprintf(buffer, SIZE, " Devices %08x\n", mDevice); result.append(buffer); snprintf(buffer, SIZE, " Ref Count %d\n", mRefCount); result.append(buffer); write(fd, result.string(), result.size()); return NO_ERROR; } // --- StreamDescriptor class implementation void AudioPolicyManagerBase::StreamDescriptor::dump(char* buffer, size_t size) { snprintf(buffer, size, " %02d %02d %02d %d\n", mIndexMin, mIndexMax, mIndexCur, mCanBeMuted); } }; // namespace android