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Diffstat (limited to 'audio/AudioPolicyManagerBase.cpp')
| -rwxr-xr-x | audio/AudioPolicyManagerBase.cpp | 2434 |
1 files changed, 2434 insertions, 0 deletions
diff --git a/audio/AudioPolicyManagerBase.cpp b/audio/AudioPolicyManagerBase.cpp new file mode 100755 index 0000000..ac31ad4 --- /dev/null +++ b/audio/AudioPolicyManagerBase.cpp @@ -0,0 +1,2434 @@ +/* + * 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 <utils/Log.h> +#include <hardware_legacy/AudioPolicyManagerBase.h> +#include <hardware/audio_effect.h> +#include <math.h> + +namespace android_audio_legacy { + +// ---------------------------------------------------------------------------- +// 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); + } + } + 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 = ""; + } + } + } 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 + checkA2dpSuspend(); + checkOutputForAllStrategies(); + // 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 (isInCall()) { + 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 (!isStateInCall(oldState) && isStateInCall(state)) { + 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 (isStateInCall(oldState) && !isStateInCall(state)) { + LOGV(" Exiting call in setPhoneState()"); + // force routing command to audio hardware when exiting a call + // even if no device change is needed + force = true; + } else if (isStateInCall(state) && (state != oldState)) { + LOGV(" Switching between telephony and VoIP in setPhoneState()"); + // force routing command to audio hardware when switching between telephony and VoIP + // 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 + checkA2dpSuspend(); + checkOutputForAllStrategies(); +#endif + updateDeviceForStrategy(); + + AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mHardwareOutput); + + // force routing command to audio hardware when ending call + // even if no device change is needed + if (isStateInCall(oldState) && 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 (isStateInCall(state) && 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 (isStateInCall(state)) { + 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 && + isStreamActive(AudioSystem::MUSIC, 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); + + bool forceVolumeReeval = false; + 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; + } + forceVolumeReeval = true; + 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_ANALOG_DOCK && + config != AudioSystem::FORCE_DIGITAL_DOCK && 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 && + config != AudioSystem::FORCE_ANALOG_DOCK && + config != AudioSystem::FORCE_DIGITAL_DOCK) { + LOGW("setForceUse() invalid config %d for FOR_DOCK", config); + } + forceVolumeReeval = true; + 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 + checkA2dpSuspend(); + checkOutputForAllStrategies(); +#endif + updateDeviceForStrategy(); + setOutputDevice(mHardwareOutput, newDevice); + if (forceVolumeReeval) { + applyStreamVolumes(mHardwareOutput, newDevice, 0, true); + } + + audio_io_handle_t activeInput = getActiveInput(); + if (activeInput != 0) { + AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput); + newDevice = getDeviceForInputSource(inputDesc->mInputSource); + if (newDevice != inputDesc->mDevice) { + LOGV("setForceUse() 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()); + } + } + +} + +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 required by specified parameters + if (needsDirectOuput(stream, samplingRate, format, channels, flags, device)) { + + 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] = 0; + outputDesc->mStopTime[stream] = 0; + 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, + int session) +{ + LOGV("startOutput() output %d, stream %d, session %d", output, stream, session); + 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 || strategy == STRATEGY_ENFORCED_AUDIBLE)) { + 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); + + uint32_t prevDevice = outputDesc->mDevice; + setOutputDevice(output, getNewDevice(output)); + + // handle special case for sonification while in call + if (isInCall()) { + handleIncallSonification(stream, true, false); + } + + // apply volume rules for current stream and device if necessary + checkAndSetVolume(stream, mStreams[stream].mIndexCur, output, outputDesc->device()); + + // FIXME: need a delay to make sure that audio path switches to speaker before sound + // starts. Should be platform specific? + if (stream == AudioSystem::ENFORCED_AUDIBLE && + prevDevice != outputDesc->mDevice) { + usleep(outputDesc->mLatency*4*1000); + } + + return NO_ERROR; +} + +status_t AudioPolicyManagerBase::stopOutput(audio_io_handle_t output, + AudioSystem::stream_type stream, + int session) +{ + LOGV("stopOutput() output %d, stream %d, session %d", output, stream, session); + 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 (isInCall()) { + 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 stream was stopped - see isStreamActive() + outputDesc->mStopTime[stream] = systemTime(); + + setOutputDevice(output, getNewDevice(output), false, outputDesc->mLatency*2); + +#ifdef WITH_A2DP + if (mA2dpOutput != 0 && !a2dpUsedForSonification() && + (strategy == STRATEGY_SONIFICATION || strategy == STRATEGY_ENFORCED_AUDIBLE)) { + setStrategyMute(STRATEGY_MEDIA, + false, + mA2dpOutput, + mOutputs.valueFor(mHardwareOutput)->mLatency*2); + } +#endif + if (output != mHardwareOutput) { + setOutputDevice(mHardwareOutput, getNewDevice(mHardwareOutput), true); + } + 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); + + param.addInt(String8(AudioParameter::keyInputSource), (int)inputDesc->mInputSource); + LOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource); + + 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; +} + +audio_io_handle_t AudioPolicyManagerBase::getOutputForEffect(effect_descriptor_t *desc) +{ + LOGV("getOutputForEffect()"); + // apply simple rule where global effects are attached to the same output as MUSIC streams + return getOutput(AudioSystem::MUSIC); +} + +status_t AudioPolicyManagerBase::registerEffect(effect_descriptor_t *desc, + audio_io_handle_t io, + uint32_t strategy, + int session, + int id) +{ + ssize_t index = mOutputs.indexOfKey(io); + if (index < 0) { + index = mInputs.indexOfKey(io); + if (index < 0) { + LOGW("registerEffect() unknown io %d", io); + return INVALID_OPERATION; + } + } + + if (mTotalEffectsMemory + desc->memoryUsage > getMaxEffectsMemory()) { + LOGW("registerEffect() memory limit exceeded for Fx %s, Memory %d KB", + desc->name, desc->memoryUsage); + return INVALID_OPERATION; + } + mTotalEffectsMemory += desc->memoryUsage; + LOGV("registerEffect() effect %s, io %d, strategy %d session %d id %d", + desc->name, io, strategy, session, id); + LOGV("registerEffect() memory %d, total memory %d", desc->memoryUsage, mTotalEffectsMemory); + + EffectDescriptor *pDesc = new EffectDescriptor(); + memcpy (&pDesc->mDesc, desc, sizeof(effect_descriptor_t)); + pDesc->mIo = io; + pDesc->mStrategy = (routing_strategy)strategy; + pDesc->mSession = session; + pDesc->mEnabled = false; + + mEffects.add(id, pDesc); + + return NO_ERROR; +} + +status_t AudioPolicyManagerBase::unregisterEffect(int id) +{ + ssize_t index = mEffects.indexOfKey(id); + if (index < 0) { + LOGW("unregisterEffect() unknown effect ID %d", id); + return INVALID_OPERATION; + } + + EffectDescriptor *pDesc = mEffects.valueAt(index); + + setEffectEnabled(pDesc, false); + + if (mTotalEffectsMemory < pDesc->mDesc.memoryUsage) { + LOGW("unregisterEffect() memory %d too big for total %d", + pDesc->mDesc.memoryUsage, mTotalEffectsMemory); + pDesc->mDesc.memoryUsage = mTotalEffectsMemory; + } + mTotalEffectsMemory -= pDesc->mDesc.memoryUsage; + LOGV("unregisterEffect() effect %s, ID %d, memory %d total memory %d", + pDesc->mDesc.name, id, pDesc->mDesc.memoryUsage, mTotalEffectsMemory); + + mEffects.removeItem(id); + delete pDesc; + + return NO_ERROR; +} + +status_t AudioPolicyManagerBase::setEffectEnabled(int id, bool enabled) +{ + ssize_t index = mEffects.indexOfKey(id); + if (index < 0) { + LOGW("unregisterEffect() unknown effect ID %d", id); + return INVALID_OPERATION; + } + + return setEffectEnabled(mEffects.valueAt(index), enabled); +} + +status_t AudioPolicyManagerBase::setEffectEnabled(EffectDescriptor *pDesc, bool enabled) +{ + if (enabled == pDesc->mEnabled) { + LOGV("setEffectEnabled(%s) effect already %s", + enabled?"true":"false", enabled?"enabled":"disabled"); + return INVALID_OPERATION; + } + + if (enabled) { + if (mTotalEffectsCpuLoad + pDesc->mDesc.cpuLoad > getMaxEffectsCpuLoad()) { + LOGW("setEffectEnabled(true) CPU Load limit exceeded for Fx %s, CPU %f MIPS", + pDesc->mDesc.name, (float)pDesc->mDesc.cpuLoad/10); + return INVALID_OPERATION; + } + mTotalEffectsCpuLoad += pDesc->mDesc.cpuLoad; + LOGV("setEffectEnabled(true) total CPU %d", mTotalEffectsCpuLoad); + } else { + if (mTotalEffectsCpuLoad < pDesc->mDesc.cpuLoad) { + LOGW("setEffectEnabled(false) CPU load %d too high for total %d", + pDesc->mDesc.cpuLoad, mTotalEffectsCpuLoad); + pDesc->mDesc.cpuLoad = mTotalEffectsCpuLoad; + } + mTotalEffectsCpuLoad -= pDesc->mDesc.cpuLoad; + LOGV("setEffectEnabled(false) total CPU %d", mTotalEffectsCpuLoad); + } + pDesc->mEnabled = enabled; + return NO_ERROR; +} + +bool AudioPolicyManagerBase::isStreamActive(int stream, uint32_t inPastMs) const +{ + nsecs_t sysTime = systemTime(); + for (size_t i = 0; i < mOutputs.size(); i++) { + if (mOutputs.valueAt(i)->mRefCount[stream] != 0 || + ns2ms(sysTime - mOutputs.valueAt(i)->mStopTime[stream]) < inPastMs) { + return true; + } + } + return false; +} + + +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)); + } + + snprintf(buffer, SIZE, "\nTotal Effects CPU: %f MIPS, Total Effects memory: %d KB\n", + (float)mTotalEffectsCpuLoad/10, mTotalEffectsMemory); + write(fd, buffer, strlen(buffer)); + + snprintf(buffer, SIZE, "Registered effects:\n"); + write(fd, buffer, strlen(buffer)); + for (size_t i = 0; i < mEffects.size(); i++) { + snprintf(buffer, SIZE, "- Effect %d dump:\n", mEffects.keyAt(i)); + write(fd, buffer, strlen(buffer)); + mEffects.valueAt(i)->dump(fd); + } + + + return NO_ERROR; +} + +// ---------------------------------------------------------------------------- +// AudioPolicyManagerBase +// ---------------------------------------------------------------------------- + +AudioPolicyManagerBase::AudioPolicyManagerBase(AudioPolicyClientInterface *clientInterface) + : +#ifdef AUDIO_POLICY_TEST + Thread(false), +#endif //AUDIO_POLICY_TEST + mPhoneState(AudioSystem::MODE_NORMAL), mRingerMode(0), + mLimitRingtoneVolume(false), mLastVoiceVolume(-1.0f), + mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0), + mA2dpSuspended(false) +{ + mpClientInterface = clientInterface; + + for (int i = 0; i < AudioSystem::NUM_FORCE_USE; i++) { + mForceUse[i] = AudioSystem::FORCE_NONE; + } + + initializeVolumeCurves(); + + // 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); + //TODO: configure audio effect output stage here + } + + updateDeviceForStrategy(); +#ifdef AUDIO_POLICY_TEST + if (mHardwareOutput != 0) { + 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(); +} + +status_t AudioPolicyManagerBase::initCheck() +{ + return (mHardwareOutput == 0) ? NO_INIT : NO_ERROR; +} + +#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); + + //TODO: configure audio effect output stage here + + // 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 (!a2dpUsedForSonification()) { + // mute music on A2DP output if a notification or ringtone is playing + uint32_t refCount = hwOutputDesc->strategyRefCount(STRATEGY_SONIFICATION); + refCount += hwOutputDesc->strategyRefCount(STRATEGY_ENFORCED_AUDIBLE); + for (uint32_t i = 0; i < refCount; i++) { + setStrategyMute(STRATEGY_MEDIA, true, mA2dpOutput); + } + } + + mA2dpSuspended = false; + + 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); + refCount += mOutputs.valueFor(mHardwareOutput)->strategyRefCount(STRATEGY_ENFORCED_AUDIBLE); + for (uint32_t i = 0; i < refCount; i++) { + setStrategyMute(STRATEGY_MEDIA, false, mA2dpOutput); + } + } + mA2dpDeviceAddress = ""; + mA2dpSuspended = false; + return NO_ERROR; +} + +void AudioPolicyManagerBase::closeA2dpOutputs() +{ + + LOGV("setDeviceConnectionState() closing A2DP and duplicated output!"); + + if (mDuplicatedOutput != 0) { + AudioOutputDescriptor *dupOutputDesc = mOutputs.valueFor(mDuplicatedOutput); + AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mHardwareOutput); + // As all active tracks on duplicated output will be deleted, + // and as they were also referenced on hardware output, the reference + // count for their stream type must be adjusted accordingly on + // hardware output. + for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) { + int refCount = dupOutputDesc->mRefCount[i]; + hwOutputDesc->changeRefCount((AudioSystem::stream_type)i,-refCount); + } + + 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 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)); + audio_io_handle_t srcOutput = 0; + audio_io_handle_t dstOutput = 0; + + if (a2dpWasUsed && !a2dpIsUsed) { + bool dupUsed = a2dpUsedForSonification() && a2dpWasUsed && (AudioSystem::popCount(prevDevice) == 2); + dstOutput = mHardwareOutput; + if (dupUsed) { + LOGV("checkOutputForStrategy() moving strategy %d from duplicated", strategy); + srcOutput = mDuplicatedOutput; + } else { + LOGV("checkOutputForStrategy() moving strategy %d from a2dp", strategy); + srcOutput = mA2dpOutput; + } + } + if (a2dpIsUsed && !a2dpWasUsed) { + bool dupUsed = a2dpUsedForSonification() && a2dpIsUsed && (AudioSystem::popCount(curDevice) == 2); + srcOutput = mHardwareOutput; + if (dupUsed) { + LOGV("checkOutputForStrategy() moving strategy %d to duplicated", strategy); + dstOutput = mDuplicatedOutput; + } else { + LOGV("checkOutputForStrategy() moving strategy %d to a2dp", strategy); + dstOutput = mA2dpOutput; + } + } + + if (srcOutput != 0 && dstOutput != 0) { + // Move effects associated to this strategy from previous output to new output + for (size_t i = 0; i < mEffects.size(); i++) { + EffectDescriptor *desc = mEffects.valueAt(i); + if (desc->mSession != AudioSystem::SESSION_OUTPUT_STAGE && + desc->mStrategy == strategy && + desc->mIo == srcOutput) { + LOGV("checkOutputForStrategy() moving effect %d to output %d", mEffects.keyAt(i), dstOutput); + mpClientInterface->moveEffects(desc->mSession, srcOutput, dstOutput); + desc->mIo = dstOutput; + } + } + // Move tracks associated to this strategy from previous output to new output + for (int i = 0; i < (int)AudioSystem::NUM_STREAM_TYPES; i++) { + if (getStrategy((AudioSystem::stream_type)i) == strategy) { + mpClientInterface->setStreamOutput((AudioSystem::stream_type)i, dstOutput); + } + } + } +} + +void AudioPolicyManagerBase::checkOutputForAllStrategies() +{ + checkOutputForStrategy(STRATEGY_ENFORCED_AUDIBLE); + checkOutputForStrategy(STRATEGY_PHONE); + checkOutputForStrategy(STRATEGY_SONIFICATION); + checkOutputForStrategy(STRATEGY_MEDIA); + checkOutputForStrategy(STRATEGY_DTMF); +} + +void AudioPolicyManagerBase::checkA2dpSuspend() +{ + // suspend A2DP output if: + // (NOT already suspended) && + // ((SCO device is connected && + // (forced usage for communication || for record is SCO))) || + // (phone state is ringing || in call) + // + // restore A2DP output if: + // (Already suspended) && + // ((SCO device is NOT connected || + // (forced usage NOT for communication && NOT for record is SCO))) && + // (phone state is NOT ringing && NOT in call) + // + if (mA2dpOutput == 0) { + return; + } + + if (mA2dpSuspended) { + if (((mScoDeviceAddress == "") || + ((mForceUse[AudioSystem::FOR_COMMUNICATION] != AudioSystem::FORCE_BT_SCO) && + (mForceUse[AudioSystem::FOR_RECORD] != AudioSystem::FORCE_BT_SCO))) && + ((mPhoneState != AudioSystem::MODE_IN_CALL) && + (mPhoneState != AudioSystem::MODE_RINGTONE))) { + + mpClientInterface->restoreOutput(mA2dpOutput); + mA2dpSuspended = false; + } + } else { + if (((mScoDeviceAddress != "") && + ((mForceUse[AudioSystem::FOR_COMMUNICATION] == AudioSystem::FORCE_BT_SCO) || + (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO))) || + ((mPhoneState == AudioSystem::MODE_IN_CALL) || + (mPhoneState == AudioSystem::MODE_RINGTONE))) { + + mpClientInterface->suspendOutput(mA2dpOutput); + mA2dpSuspended = true; + } + } +} + + +#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: the strategy enforced audible is active on the output: + // use device for strategy enforced audible + // 2: we are in call or the strategy phone is active on the output: + // use device for strategy phone + // 3: the strategy sonification is active on the output: + // use device for strategy sonification + // 4: the strategy media is active on the output: + // use device for strategy media + // 5: the strategy DTMF is active on the output: + // use device for strategy DTMF + if (outputDesc->isUsedByStrategy(STRATEGY_ENFORCED_AUDIBLE)) { + device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache); + } else if (isInCall() || + 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; +} + +uint32_t AudioPolicyManagerBase::getStrategyForStream(AudioSystem::stream_type stream) { + return (uint32_t)getStrategy(stream); +} + +uint32_t AudioPolicyManagerBase::getDevicesForStream(AudioSystem::stream_type stream) { + uint32_t devices; + // By checking the range of stream before calling getStrategy, we avoid + // getStrategy's behavior for invalid streams. getStrategy would do a LOGE + // and then return STRATEGY_MEDIA, but we want to return the empty set. + if (stream < (AudioSystem::stream_type) 0 || stream >= AudioSystem::NUM_STREAM_TYPES) { + devices = 0; + } else { + AudioPolicyManagerBase::routing_strategy strategy = getStrategy(stream); + devices = getDeviceForStrategy(strategy, true); + } + return devices; +} + +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: + 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; + case AudioSystem::ENFORCED_AUDIBLE: + return STRATEGY_ENFORCED_AUDIBLE; + } +} + +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 (!isInCall()) { + // 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 (!isInCall() || 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; +#ifdef WITH_A2DP + // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP + if (!isInCall() && !mA2dpSuspended) { + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP; + if (device) break; + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES; + if (device) break; + } +#endif + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET; + if (device) break; + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL; + if (device) break; + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET; + if (device) break; + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_EARPIECE; + if (device == 0) { + LOGE("getDeviceForStrategy() earpiece device not found"); + } + break; + + case AudioSystem::FORCE_SPEAKER: +#ifdef WITH_A2DP + // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to + // A2DP speaker when forcing to speaker output + if (!isInCall() && !mA2dpSuspended) { + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER; + if (device) break; + } +#endif + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET; + if (device) break; + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL; + if (device) break; + device = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET; + 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 (isInCall()) { + device = getDeviceForStrategy(STRATEGY_PHONE, false); + break; + } + // FALL THROUGH + + case STRATEGY_ENFORCED_AUDIBLE: + // strategy STRATEGY_ENFORCED_AUDIBLE uses same routing policy as STRATEGY_SONIFICATION + // except when in call where it doesn't default to STRATEGY_PHONE behavior + + 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_WIRED_HEADPHONE; + if (device2 == 0) { + device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_WIRED_HEADSET; + } +#ifdef WITH_A2DP + if ((mA2dpOutput != 0) && !mA2dpSuspended && + (strategy == STRATEGY_MEDIA || a2dpUsedForSonification())) { + 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_DGTL_DOCK_HEADSET; + } + if (device2 == 0) { + device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_AUX_DIGITAL; + } + if (device2 == 0) { + device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET; + } + if (device2 == 0) { + device2 = mAvailableOutputDevices & AudioSystem::DEVICE_OUT_SPEAKER; + } + + // device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or + // STRATEGY_ENFORCED_AUDIBLE, 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 == mA2dpOutput) { + 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 + // FIXME: increased delay due to larger buffers used for low power audio mode. + // remove when low power audio is controlled by policy manager. + usleep(outputDesc->mLatency*8*1000); + } + + // 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); + + // 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: + case AUDIO_SOURCE_VOICE_COMMUNICATION: + 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("getDeviceForInputSource() 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; +} + + +AudioPolicyManagerBase::device_category AudioPolicyManagerBase::getDeviceCategory(uint32_t device) +{ + if (device == 0) { + // this happens when forcing a route update and no track is active on an output. + // In this case the returned category is not important. + return DEVICE_CATEGORY_SPEAKER; + } + + if (AudioSystem::popCount(device) > 1) { + // Multiple device selection is either: + // - speaker + one other device: give priority to speaker in this case. + // - one A2DP device + another device: happens with duplicated output. In this case + // retain the device on the A2DP output as the other must not correspond to an active + // selection if not the speaker. + if (device & AUDIO_DEVICE_OUT_SPEAKER) + return DEVICE_CATEGORY_SPEAKER; + + device &= AUDIO_DEVICE_OUT_ALL_A2DP; + } + + LOGW_IF(AudioSystem::popCount(device) != 1, + "getDeviceCategory() invalid device combination: %08x", + device); + + switch(device) { + case AUDIO_DEVICE_OUT_EARPIECE: + return DEVICE_CATEGORY_EARPIECE; + case AUDIO_DEVICE_OUT_WIRED_HEADSET: + case AUDIO_DEVICE_OUT_WIRED_HEADPHONE: + case AUDIO_DEVICE_OUT_BLUETOOTH_SCO: + case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET: + case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP: + case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES: + return DEVICE_CATEGORY_HEADSET; + case AUDIO_DEVICE_OUT_SPEAKER: + case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT: + case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER: + default: + return DEVICE_CATEGORY_SPEAKER; + } +} + +float AudioPolicyManagerBase::volIndexToAmpl(uint32_t device, const StreamDescriptor& streamDesc, + int indexInUi) +{ + device_category deviceCategory = getDeviceCategory(device); + const VolumeCurvePoint *curve = streamDesc.mVolumeCurve[deviceCategory]; + + // the volume index in the UI is relative to the min and max volume indices for this stream type + int nbSteps = 1 + curve[VOLMAX].mIndex - + curve[VOLMIN].mIndex; + int volIdx = (nbSteps * (indexInUi - streamDesc.mIndexMin)) / + (streamDesc.mIndexMax - streamDesc.mIndexMin); + + // find what part of the curve this index volume belongs to, or if it's out of bounds + int segment = 0; + if (volIdx < curve[VOLMIN].mIndex) { // out of bounds + return 0.0f; + } else if (volIdx < curve[VOLKNEE1].mIndex) { + segment = 0; + } else if (volIdx < curve[VOLKNEE2].mIndex) { + segment = 1; + } else if (volIdx <= curve[VOLMAX].mIndex) { + segment = 2; + } else { // out of bounds + return 1.0f; + } + + // linear interpolation in the attenuation table in dB + float decibels = curve[segment].mDBAttenuation + + ((float)(volIdx - curve[segment].mIndex)) * + ( (curve[segment+1].mDBAttenuation - + curve[segment].mDBAttenuation) / + ((float)(curve[segment+1].mIndex - + curve[segment].mIndex)) ); + + float amplification = exp( decibels * 0.115129f); // exp( dB * ln(10) / 20 ) + + LOGV("VOLUME vol index=[%d %d %d], dB=[%.1f %.1f %.1f] ampl=%.5f", + curve[segment].mIndex, volIdx, + curve[segment+1].mIndex, + curve[segment].mDBAttenuation, + decibels, + curve[segment+1].mDBAttenuation, + amplification); + + return amplification; +} + +const AudioPolicyManagerBase::VolumeCurvePoint + AudioPolicyManagerBase::sDefaultVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { + {1, -49.5f}, {33, -33.5f}, {66, -17.0f}, {100, 0.0f} +}; + +const AudioPolicyManagerBase::VolumeCurvePoint + AudioPolicyManagerBase::sDefaultMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { + {1, -58.0f}, {20, -40.0f}, {60, -17.0f}, {100, 0.0f} +}; + +const AudioPolicyManagerBase::VolumeCurvePoint + AudioPolicyManagerBase::sSpeakerMediaVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { + {1, -56.0f}, {20, -34.0f}, {60, -11.0f}, {100, 0.0f} +}; + +const AudioPolicyManagerBase::VolumeCurvePoint + AudioPolicyManagerBase::sSpeakerSonificationVolumeCurve[AudioPolicyManagerBase::VOLCNT] = { + {1, -29.7f}, {33, -20.1f}, {66, -10.2f}, {100, 0.0f} +}; + + +const AudioPolicyManagerBase::VolumeCurvePoint + *AudioPolicyManagerBase::sVolumeProfiles[AudioPolicyManagerBase::NUM_STRATEGIES] + [AudioPolicyManagerBase::DEVICE_CATEGORY_CNT] = { + { // STRATEGY_MEDIA + sDefaultMediaVolumeCurve, // DEVICE_CATEGORY_HEADSET + sSpeakerMediaVolumeCurve, // DEVICE_CATEGORY_SPEAKER + sDefaultMediaVolumeCurve // DEVICE_CATEGORY_EARPIECE + }, + { // STRATEGY_PHONE + sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET + sDefaultVolumeCurve, // DEVICE_CATEGORY_SPEAKER + sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE + }, + { // STRATEGY_SONIFICATION + sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET + sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER + sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE + }, + { // STRATEGY_DTMF + sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET + sDefaultVolumeCurve, // DEVICE_CATEGORY_SPEAKER + sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE + }, + { // STRATEGY_ENFORCED_AUDIBLE + sDefaultVolumeCurve, // DEVICE_CATEGORY_HEADSET + sSpeakerSonificationVolumeCurve, // DEVICE_CATEGORY_SPEAKER + sDefaultVolumeCurve // DEVICE_CATEGORY_EARPIECE + }, +}; + +void AudioPolicyManagerBase::initializeVolumeCurves() +{ + for (int i = 0; i < AudioSystem::NUM_STREAM_TYPES; i++) { + for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) { + mStreams[i].mVolumeCurve[j] = + sVolumeProfiles[getStrategy((AudioSystem::stream_type)i)][j]; + } + } +} + +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(); + } + + // if volume is not 0 (not muted), force media volume to max on digital output + if (stream == AudioSystem::MUSIC && + index != mStreams[stream].mIndexMin && + (device == AudioSystem::DEVICE_OUT_AUX_DIGITAL || + device == AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET)) { + return 1.0; + } + + volume = volIndexToAmpl(device, streamDesc, index); + + // if a headset 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) || + (stream == AudioSystem::SYSTEM)) && + 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); + // We actually change the volume if: + // - the float value returned by computeVolume() changed + // - the force flag is set + 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) { + // 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; + // Force VOICE_CALL to track BLUETOOTH_SCO stream volume when bluetooth audio is + // enabled + if (stream == AudioSystem::BLUETOOTH_SCO) { + mpClientInterface->setStreamVolume(AudioSystem::VOICE_CALL, volume, output, delayMs); + } + } + + mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream, volume, output, delayMs); + } + + if (stream == AudioSystem::VOICE_CALL || + stream == AudioSystem::BLUETOOTH_SCO) { + float voiceVolume; + // Force voice volume to max for bluetooth SCO as volume is managed by the headset + if (stream == AudioSystem::VOICE_CALL) { + voiceVolume = (float)index/(float)mStreams[stream].mIndexMax; + } else { + voiceVolume = 1.0; + } + + if (voiceVolume != mLastVoiceVolume && output == mHardwareOutput) { + mpClientInterface->setVoiceVolume(voiceVolume, delayMs); + mLastVoiceVolume = voiceVolume; + } + } + + return NO_ERROR; +} + +void AudioPolicyManagerBase::applyStreamVolumes(audio_io_handle_t output, uint32_t device, int delayMs, bool force) +{ + 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, force); + } +} + +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(); + } + } + } + } +} + +bool AudioPolicyManagerBase::isInCall() +{ + return isStateInCall(mPhoneState); +} + +bool AudioPolicyManagerBase::isStateInCall(int state) { + return ((state == AudioSystem::MODE_IN_CALL) || + (state == AudioSystem::MODE_IN_COMMUNICATION)); +} + +bool AudioPolicyManagerBase::needsDirectOuput(AudioSystem::stream_type stream, + uint32_t samplingRate, + uint32_t format, + uint32_t channels, + AudioSystem::output_flags flags, + uint32_t device) +{ + return ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) || + (format !=0 && !AudioSystem::isLinearPCM(format))); +} + +uint32_t AudioPolicyManagerBase::getMaxEffectsCpuLoad() +{ + return MAX_EFFECTS_CPU_LOAD; +} + +uint32_t AudioPolicyManagerBase::getMaxEffectsMemory() +{ + return MAX_EFFECTS_MEMORY; +} + +// --- 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; + mStopTime[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), + mInputSource(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); +} + +// --- EffectDescriptor class implementation + +status_t AudioPolicyManagerBase::EffectDescriptor::dump(int fd) +{ + const size_t SIZE = 256; + char buffer[SIZE]; + String8 result; + + snprintf(buffer, SIZE, " I/O: %d\n", mIo); + result.append(buffer); + snprintf(buffer, SIZE, " Strategy: %d\n", mStrategy); + result.append(buffer); + snprintf(buffer, SIZE, " Session: %d\n", mSession); + result.append(buffer); + snprintf(buffer, SIZE, " Name: %s\n", mDesc.name); + result.append(buffer); + snprintf(buffer, SIZE, " %s\n", mEnabled ? "Enabled" : "Disabled"); + result.append(buffer); + write(fd, result.string(), result.size()); + + return NO_ERROR; +} + + + +}; // namespace android |