blob: 0722aed2c8ce4044cba037728c38399ee031c339 [file] [log] [blame]
/*
* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
* Not a contribution.
*
* 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 "AudioPolicyManager"
//#define LOG_NDEBUG 0
//#define VERY_VERBOSE_LOGGING
#ifdef VERY_VERBOSE_LOGGING
#define ALOGVV ALOGV
#else
#define ALOGVV(a...) do { } while(0)
#endif
// A device mask for all audio output devices that are considered "remote" when evaluating
// active output devices in isStreamActiveRemotely()
#define APM_AUDIO_OUT_DEVICE_REMOTE_ALL AUDIO_DEVICE_OUT_REMOTE_SUBMIX
#include <utils/Log.h>
#include "AudioPolicyManager.h"
#include <hardware/audio_effect.h>
#include <hardware/audio.h>
#include <math.h>
#include <hardware_legacy/audio_policy_conf.h>
#include <cutils/properties.h>
namespace android_audio_legacy {
// ----------------------------------------------------------------------------
// AudioPolicyInterface implementation
// ----------------------------------------------------------------------------
status_t AudioPolicyManager::setDeviceConnectionState(audio_devices_t device,
AudioSystem::device_connection_state state,
const char *device_address)
{
SortedVector <audio_io_handle_t> outputs;
ALOGV("setDeviceConnectionState() device: %x, state %d, address %s", device, state, device_address);
// connect/disconnect only 1 device at a time
if (!audio_is_output_device(device) && !audio_is_input_device(device)) return BAD_VALUE;
if (strlen(device_address) >= MAX_DEVICE_ADDRESS_LEN) {
ALOGE("setDeviceConnectionState() invalid address: %s", device_address);
return BAD_VALUE;
}
// handle output devices
if (audio_is_output_device(device)) {
if (!mHasA2dp && audio_is_a2dp_device(device)) {
ALOGE("setDeviceConnectionState() invalid A2DP device: %x", device);
return BAD_VALUE;
}
if (!mHasUsb && audio_is_usb_device(device)) {
ALOGE("setDeviceConnectionState() invalid USB audio device: %x", device);
return BAD_VALUE;
}
if (!mHasRemoteSubmix && audio_is_remote_submix_device((audio_devices_t)device)) {
ALOGE("setDeviceConnectionState() invalid remote submix audio device: %x", device);
return BAD_VALUE;
}
// save a copy of the opened output descriptors before any output is opened or closed
// by checkOutputsForDevice(). This will be needed by checkOutputForAllStrategies()
mPreviousOutputs = mOutputs;
switch (state)
{
// handle output device connection
case AudioSystem::DEVICE_STATE_AVAILABLE:
if (mAvailableOutputDevices & device) {
ALOGW("setDeviceConnectionState() device already connected: %x", device);
return INVALID_OPERATION;
}
ALOGV("setDeviceConnectionState() connecting device %x", device);
if (checkOutputsForDevice(device, state, outputs) != NO_ERROR) {
return INVALID_OPERATION;
}
ALOGV("setDeviceConnectionState() checkOutputsForDevice() returned %d outputs",
outputs.size());
// register new device as available
mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices | device);
if (!outputs.isEmpty()) {
String8 paramStr;
if (mHasA2dp && audio_is_a2dp_device(device)) {
// handle A2DP device connection
AudioParameter param;
param.add(String8(AUDIO_PARAMETER_A2DP_SINK_ADDRESS), String8(device_address));
paramStr = param.toString();
mA2dpDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
mA2dpSuspended = false;
} else if (audio_is_bluetooth_sco_device(device)) {
// handle SCO device connection
mScoDeviceAddress = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
} else if (mHasUsb && audio_is_usb_device(device)) {
// handle USB device connection
mUsbCardAndDevice = String8(device_address, MAX_DEVICE_ADDRESS_LEN);
paramStr = mUsbCardAndDevice;
}
// not currently handling multiple simultaneous submixes: ignoring remote submix
// case and address
if (!paramStr.isEmpty()) {
for (size_t i = 0; i < outputs.size(); i++) {
mpClientInterface->setParameters(outputs[i], paramStr);
}
}
}
break;
// handle output device disconnection
case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
if (!(mAvailableOutputDevices & device)) {
ALOGW("setDeviceConnectionState() device not connected: %x", device);
return INVALID_OPERATION;
}
ALOGV("setDeviceConnectionState() disconnecting device %x", device);
// remove device from available output devices
mAvailableOutputDevices = (audio_devices_t)(mAvailableOutputDevices & ~device);
checkOutputsForDevice(device, state, outputs);
if (mHasA2dp && audio_is_a2dp_device(device)) {
// handle A2DP device disconnection
mA2dpDeviceAddress = "";
mA2dpSuspended = false;
} else if (audio_is_bluetooth_sco_device(device)) {
// handle SCO device disconnection
mScoDeviceAddress = "";
} else if (mHasUsb && audio_is_usb_device(device)) {
// handle USB device disconnection
mUsbCardAndDevice = "";
}
// not currently handling multiple simultaneous submixes: ignoring remote submix
// case and address
} break;
default:
ALOGE("setDeviceConnectionState() invalid state: %x", state);
return BAD_VALUE;
}
checkA2dpSuspend();
checkOutputForAllStrategies();
// outputs must be closed after checkOutputForAllStrategies() is executed
if (!outputs.isEmpty()) {
for (size_t i = 0; i < outputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueFor(outputs[i]);
// close unused outputs after device disconnection or direct outputs that have been
// opened by checkOutputsForDevice() to query dynamic parameters
if ((state == AudioSystem::DEVICE_STATE_UNAVAILABLE) ||
(((desc->mFlags & AUDIO_OUTPUT_FLAG_DIRECT) != 0) &&
(desc->mDirectOpenCount == 0))) {
closeOutput(outputs[i]);
}
}
}
updateDevicesAndOutputs();
audio_devices_t newDevice = getNewDevice(mPrimaryOutput, false /*fromCache*/);
#ifdef AUDIO_EXTN_FM_ENABLED
if(device == AUDIO_DEVICE_OUT_FM) {
if (state == AudioSystem::DEVICE_STATE_AVAILABLE) {
mOutputs.valueFor(mPrimaryOutput)->changeRefCount(AudioSystem::MUSIC, 1);
newDevice = (audio_devices_t)(getNewDevice(mPrimaryOutput, false) | AUDIO_DEVICE_OUT_FM);
} else {
mOutputs.valueFor(mPrimaryOutput)->changeRefCount(AudioSystem::MUSIC, -1);
}
AudioParameter param = AudioParameter();
param.addInt(String8("handle_fm"), (int)newDevice);
ALOGV("setDeviceConnectionState() setParameters handle_fm");
mpClientInterface->setParameters(mPrimaryOutput, param.toString());
}
#endif
for (size_t i = 0; i < mOutputs.size(); i++) {
// do not force device change on duplicated output because if device is 0, it will
// also force a device 0 for the two outputs it is duplicated to which may override
// a valid device selection on those outputs.
setOutputDevice(mOutputs.keyAt(i),
getNewDevice(mOutputs.keyAt(i), true /*fromCache*/),
!mOutputs.valueAt(i)->isDuplicated(),
0);
}
if (device == AUDIO_DEVICE_OUT_WIRED_HEADSET) {
device = AUDIO_DEVICE_IN_WIRED_HEADSET;
} else if (device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO ||
device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET ||
device == AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT) {
device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
} else if(device == AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET){
device = AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET;
} else {
return NO_ERROR;
}
}
// handle input devices
if (audio_is_input_device(device)) {
switch (state)
{
// handle input device connection
case AudioSystem::DEVICE_STATE_AVAILABLE: {
if (mAvailableInputDevices & device) {
ALOGW("setDeviceConnectionState() device already connected: %d", device);
return INVALID_OPERATION;
}
mAvailableInputDevices = mAvailableInputDevices | (device & ~AUDIO_DEVICE_BIT_IN);
}
break;
// handle input device disconnection
case AudioSystem::DEVICE_STATE_UNAVAILABLE: {
if (!(mAvailableInputDevices & device)) {
ALOGW("setDeviceConnectionState() device not connected: %d", device);
return INVALID_OPERATION;
}
mAvailableInputDevices = (audio_devices_t) (mAvailableInputDevices & ~device);
} break;
default:
ALOGE("setDeviceConnectionState() invalid state: %x", state);
return BAD_VALUE;
}
audio_io_handle_t activeInput = getActiveInput();
if (activeInput != 0) {
AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
ALOGV("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;
}
ALOGW("setDeviceConnectionState() invalid device: %x", device);
return BAD_VALUE;
}
void AudioPolicyManager::setPhoneState(int state)
{
ALOGV("setPhoneState() state %d", state);
audio_devices_t newDevice = AUDIO_DEVICE_NONE;
if (state < 0 || state >= AudioSystem::NUM_MODES) {
ALOGW("setPhoneState() invalid state %d", state);
return;
}
if (state == mPhoneState ) {
ALOGW("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()) {
ALOGV("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)) {
ALOGV(" Entering call in setPhoneState()");
// force routing command to audio hardware when starting a call
// even if no device change is needed
force = true;
for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) {
mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] =
sVolumeProfiles[AUDIO_STREAM_VOICE_CALL][j];
}
} else if (isStateInCall(oldState) && !isStateInCall(state)) {
ALOGV(" Exiting call in setPhoneState()");
// force routing command to audio hardware when exiting a call
// even if no device change is needed
force = true;
for (int j = 0; j < DEVICE_CATEGORY_CNT; j++) {
mStreams[AUDIO_STREAM_DTMF].mVolumeCurve[j] =
sVolumeProfiles[AUDIO_STREAM_DTMF][j];
}
} else if (isStateInCall(state) && (state != oldState)) {
ALOGV(" 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(mPrimaryOutput, false /*fromCache*/);
checkA2dpSuspend();
checkOutputForAllStrategies();
updateDevicesAndOutputs();
AudioOutputDescriptor *hwOutputDesc = mOutputs.valueFor(mPrimaryOutput);
// force routing command to audio hardware when ending call
// even if no device change is needed
if (isStateInCall(oldState) && newDevice == AUDIO_DEVICE_NONE) {
newDevice = hwOutputDesc->device();
}
int delayMs = 0;
if (isStateInCall(state)) {
nsecs_t sysTime = systemTime();
for (size_t i = 0; i < mOutputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueAt(i);
// mute media and sonification strategies and delay device switch by the largest
// latency of any output where either strategy is active.
// This avoid sending the ring tone or music tail into the earpiece or headset.
if ((desc->isStrategyActive(STRATEGY_MEDIA,
SONIFICATION_HEADSET_MUSIC_DELAY,
sysTime) ||
desc->isStrategyActive(STRATEGY_SONIFICATION,
SONIFICATION_HEADSET_MUSIC_DELAY,
sysTime)) &&
(delayMs < (int)desc->mLatency*2)) {
delayMs = desc->mLatency*2;
}
setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i));
setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS,
getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/));
setStrategyMute(STRATEGY_SONIFICATION, true, mOutputs.keyAt(i));
setStrategyMute(STRATEGY_SONIFICATION, false, mOutputs.keyAt(i), MUTE_TIME_MS,
getDeviceForStrategy(STRATEGY_SONIFICATION, true /*fromCache*/));
}
}
// change routing is necessary
setOutputDevice(mPrimaryOutput, newDevice, force, delayMs);
//update device for all non-primary outputs
for (size_t i = 0; i < mOutputs.size(); i++) {
audio_io_handle_t output = mOutputs.keyAt(i);
if (output != mPrimaryOutput) {
newDevice = getNewDevice(output, false /*fromCache*/);
setOutputDevice(output, newDevice, (newDevice != AUDIO_DEVICE_NONE));
}
}
// if entering in call state, handle special case of active streams
// pertaining to sonification strategy see handleIncallSonification()
if (isStateInCall(state)) {
ALOGV("setPhoneState() in call state management: new state is %d", state);
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 AudioPolicyManager::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config)
{
ALOGV("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) {
ALOGW("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 &&
#ifdef AUDIO_EXTN_FM_ENABLED
config != AudioSystem::FORCE_SPEAKER &&
#endif
config != AudioSystem::FORCE_WIRED_ACCESSORY &&
config != AudioSystem::FORCE_ANALOG_DOCK &&
config != AudioSystem::FORCE_DIGITAL_DOCK && config != AudioSystem::FORCE_NONE &&
config != AudioSystem::FORCE_NO_BT_A2DP) {
ALOGW("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) {
ALOGW("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) {
ALOGW("setForceUse() invalid config %d for FOR_DOCK", config);
}
forceVolumeReeval = true;
mForceUse[usage] = config;
break;
case AudioSystem::FOR_SYSTEM:
if (config != AudioSystem::FORCE_NONE &&
config != AudioSystem::FORCE_SYSTEM_ENFORCED) {
ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config);
}
forceVolumeReeval = true;
mForceUse[usage] = config;
break;
default:
ALOGW("setForceUse() invalid usage %d", usage);
break;
}
// check for device and output changes triggered by new force usage
checkA2dpSuspend();
checkOutputForAllStrategies();
updateDevicesAndOutputs();
for (int i = mOutputs.size() -1; i >= 0; i--) {
audio_io_handle_t output = mOutputs.keyAt(i);
audio_devices_t newDevice = getNewDevice(output, true /*fromCache*/);
setOutputDevice(output, newDevice, (newDevice != AUDIO_DEVICE_NONE));
if (forceVolumeReeval && (newDevice != AUDIO_DEVICE_NONE)) {
applyStreamVolumes(output, newDevice, 0, true);
}
}
audio_io_handle_t activeInput = getActiveInput();
if (activeInput != 0) {
AudioInputDescriptor *inputDesc = mInputs.valueFor(activeInput);
audio_devices_t newDevice = getDeviceForInputSource(inputDesc->mInputSource);
if ((newDevice != AUDIO_DEVICE_NONE) && (newDevice != inputDesc->mDevice)) {
ALOGV("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());
}
}
}
status_t AudioPolicyManager::startOutput(audio_io_handle_t output,
AudioSystem::stream_type stream,
int session)
{
ALOGV("startOutput() output %d, stream %d, session %d", output, stream, session);
ssize_t index = mOutputs.indexOfKey(output);
if (index < 0) {
ALOGW("startOutput() unknow output %d", output);
return BAD_VALUE;
}
AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
// increment 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
// necessary for a correct control of hardware output routing by startOutput() and stopOutput()
outputDesc->changeRefCount(stream, 1);
if (outputDesc->mRefCount[stream] == 1) {
audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
routing_strategy strategy = getStrategy(stream);
bool shouldWait = (strategy == STRATEGY_SONIFICATION) ||
(strategy == STRATEGY_SONIFICATION_RESPECTFUL);
uint32_t waitMs = 0;
bool force = false;
for (size_t i = 0; i < mOutputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueAt(i);
if (desc != outputDesc) {
// force a device change if any other output is managed by the same hw
// module and has a current device selection that differs from selected device.
// In this case, the audio HAL must receive the new device selection so that it can
// change the device currently selected by the other active output.
if (outputDesc->sharesHwModuleWith(desc) &&
desc->device() != newDevice) {
force = true;
}
// wait for audio on other active outputs to be presented when starting
// a notification so that audio focus effect can propagate.
uint32_t latency = desc->latency();
if (shouldWait && desc->isActive(latency * 2) && (waitMs < latency)) {
waitMs = latency;
}
}
}
uint32_t muteWaitMs = setOutputDevice(output, newDevice, force);
// 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].getVolumeIndex(newDevice),
output,
newDevice);
// update the outputs if starting an output with a stream that can affect notification
// routing
handleNotificationRoutingForStream(stream);
if (waitMs > muteWaitMs) {
usleep((waitMs - muteWaitMs) * 2 * 1000);
}
}
#ifdef DOLBY_UDC
// It is observed that in some use-cases where both outputs are present eg. bluetooth and headphone,
// the output for particular stream type is decided in this routine. Hence we must call
// getDeviceForStrategy in order to get the current active output for this stream type and update
// the dolby system property.
if (stream == AudioSystem::MUSIC)
{
audio_devices_t audioOutputDevice = getDeviceForStrategy(getStrategy(AudioSystem::MUSIC), true);
DolbySystemProperty::set(audioOutputDevice);
}
#endif // DOLBY_END
return NO_ERROR;
}
status_t AudioPolicyManager::stopOutput(audio_io_handle_t output,
AudioSystem::stream_type stream,
int session)
{
ALOGV("stopOutput() output %d, stream %d, session %d", output, stream, session);
ssize_t index = mOutputs.indexOfKey(output);
if (index < 0) {
ALOGW("stopOutput() unknow output %d", output);
return BAD_VALUE;
}
AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index);
// 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()
if (outputDesc->mRefCount[stream] == 0) {
outputDesc->mStopTime[stream] = systemTime();
audio_devices_t newDevice = getNewDevice(output, false /*fromCache*/);
// delay the device switch by twice the latency because stopOutput() is executed when
// the track stop() command is received and at that time the audio track buffer can
// still contain data that needs to be drained. The latency only covers the audio HAL
// and kernel buffers. Also the latency does not always include additional delay in the
// audio path (audio DSP, CODEC ...)
setOutputDevice(output, newDevice, false, outputDesc->mLatency*2);
// force restoring the device selection on other active outputs if it differs from the
// one being selected for this output
for (size_t i = 0; i < mOutputs.size(); i++) {
audio_io_handle_t curOutput = mOutputs.keyAt(i);
AudioOutputDescriptor *desc = mOutputs.valueAt(i);
if (curOutput != output &&
desc->isActive() &&
outputDesc->sharesHwModuleWith(desc) &&
(newDevice != desc->device())) {
setOutputDevice(curOutput,
getNewDevice(curOutput, false /*fromCache*/),
true,
outputDesc->mLatency*2);
}
}
// update the outputs if stopping one with a stream that can affect notification routing
handleNotificationRoutingForStream(stream);
}
return NO_ERROR;
} else {
ALOGW("stopOutput() refcount is already 0 for output %d", output);
return INVALID_OPERATION;
}
}
audio_devices_t AudioPolicyManager::getNewDevice(audio_io_handle_t output, bool fromCache)
{
audio_devices_t device = AUDIO_DEVICE_NONE;
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
AudioOutputDescriptor *primaryOutputDesc = mOutputs.valueFor(mPrimaryOutput);
// 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 "respectful" sonification is active on the output:
// use device for strategy "respectful" sonification
// 5: the strategy media is active on the output:
// use device for strategy media
// 6: the strategy DTMF is active on the output:
// use device for strategy DTMF
if (outputDesc->isStrategyActive(STRATEGY_ENFORCED_AUDIBLE)) {
device = getDeviceForStrategy(STRATEGY_ENFORCED_AUDIBLE, fromCache);
} else if (isInCall() ||
outputDesc->isStrategyActive(STRATEGY_PHONE)) {
device = getDeviceForStrategy(STRATEGY_PHONE, fromCache);
} else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION)||
(primaryOutputDesc->isStrategyActive(STRATEGY_SONIFICATION)&& !primaryOutputDesc->isStrategyActive(STRATEGY_MEDIA))){
device = getDeviceForStrategy(STRATEGY_SONIFICATION, fromCache);
} else if (outputDesc->isStrategyActive(STRATEGY_SONIFICATION_RESPECTFUL)) {
device = getDeviceForStrategy(STRATEGY_SONIFICATION_RESPECTFUL, fromCache);
} else if (outputDesc->isStrategyActive(STRATEGY_MEDIA)) {
device = getDeviceForStrategy(STRATEGY_MEDIA, fromCache);
} else if (outputDesc->isStrategyActive(STRATEGY_DTMF)) {
device = getDeviceForStrategy(STRATEGY_DTMF, fromCache);
}
ALOGV("getNewDevice() selected device %x", device);
return device;
}
//private function, no changes from AudioPolicyManagerBase
void AudioPolicyManager::handleNotificationRoutingForStream(AudioSystem::stream_type stream) {
switch(stream) {
case AudioSystem::MUSIC:
checkOutputForStrategy(STRATEGY_SONIFICATION_RESPECTFUL);
updateDevicesAndOutputs();
break;
default:
break;
}
}
audio_io_handle_t AudioPolicyManager::getInput(int inputSource,
uint32_t samplingRate,
uint32_t format,
uint32_t channelMask,
AudioSystem::audio_in_acoustics acoustics)
{
audio_io_handle_t input = 0;
audio_devices_t device = getDeviceForInputSource(inputSource);
ALOGV("getInput() inputSource %d, samplingRate %d, format %d, channelMask %x, acoustics %x",
inputSource, samplingRate, format, channelMask, acoustics);
if (device == AUDIO_DEVICE_NONE) {
ALOGW("getInput() could not find device for inputSource %d", inputSource);
return 0;
}
IOProfile *profile = getInputProfile(device,
samplingRate,
format,
channelMask);
if (profile == NULL) {
ALOGW("getInput() could not find profile for device %04x, samplingRate %d, format %d,"
"channelMask %04x",
device, samplingRate, format, channelMask);
return 0;
}
if (profile->mModule->mHandle == 0) {
ALOGE("getInput(): HW module %s not opened", profile->mModule->mName);
return 0;
}
AudioInputDescriptor *inputDesc = new AudioInputDescriptor(profile);
inputDesc->mInputSource = inputSource;
inputDesc->mDevice = device;
inputDesc->mSamplingRate = samplingRate;
inputDesc->mFormat = (audio_format_t)format;
inputDesc->mChannelMask = (audio_channel_mask_t)channelMask;
inputDesc->mRefCount = 0;
input = mpClientInterface->openInput(profile->mModule->mHandle,
&inputDesc->mDevice,
&inputDesc->mSamplingRate,
&inputDesc->mFormat,
&inputDesc->mChannelMask);
// only accept input with the exact requested set of parameters
if (input == 0 ||
(samplingRate != inputDesc->mSamplingRate) ||
(format != inputDesc->mFormat) ||
(channelMask != inputDesc->mChannelMask)) {
ALOGV("getInput() failed opening input: samplingRate %d, format %d, channelMask %d",
samplingRate, format, channelMask);
if (input != 0) {
mpClientInterface->closeInput(input);
}
delete inputDesc;
return 0;
}
mInputs.add(input, inputDesc);
return input;
}
AudioPolicyManager::routing_strategy AudioPolicyManager::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::ALARM:
return STRATEGY_SONIFICATION;
case AudioSystem::NOTIFICATION:
return STRATEGY_SONIFICATION_RESPECTFUL;
case AudioSystem::DTMF:
return STRATEGY_DTMF;
default:
ALOGE("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:
#ifdef AUDIO_EXTN_INCALL_MUSIC_ENABLED
case AudioSystem::INCALL_MUSIC:
#endif
return STRATEGY_MEDIA;
case AudioSystem::ENFORCED_AUDIBLE:
return STRATEGY_ENFORCED_AUDIBLE;
}
}
audio_devices_t AudioPolicyManager::getDeviceForStrategy(routing_strategy strategy,
bool fromCache)
{
uint32_t device = AUDIO_DEVICE_NONE;
if (fromCache) {
ALOGVV("getDeviceForStrategy() from cache strategy %d, device %x",
strategy, mDeviceForStrategy[strategy]);
return mDeviceForStrategy[strategy];
}
switch (strategy) {
case STRATEGY_SONIFICATION_RESPECTFUL:
if (isInCall()) {
device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
} else if (isStreamActiveRemotely(AudioSystem::MUSIC,
SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
// while media is playing on a remote device, use the the sonification behavior.
// Note that we test this usecase before testing if media is playing because
// the isStreamActive() method only informs about the activity of a stream, not
// if it's for local playback. Note also that we use the same delay between both tests
device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
} else if (isStreamActive(AudioSystem::MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
// while media is playing (or has recently played), use the same device
device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
} else {
// when media is not playing anymore, fall back on the sonification behavior
device = getDeviceForStrategy(STRATEGY_SONIFICATION, false /*fromCache*/);
}
break;
case STRATEGY_DTMF:
if (!isInCall()) {
// when off call, DTMF strategy follows the same rules as MEDIA strategy
device = getDeviceForStrategy(STRATEGY_MEDIA, false /*fromCache*/);
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 & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
if (device) break;
}
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AUDIO_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
// when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
if (mHasA2dp && !isInCall() &&
(mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
(getA2dpOutput() != 0) && !mA2dpSuspended) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
if (device) break;
}
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
if (device) break;
if (mPhoneState != AudioSystem::MODE_IN_CALL) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
if (device) break;
}
// Allow voice call on USB ANLG DOCK headset
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_EARPIECE;
if (device) break;
device = mDefaultOutputDevice;
if (device == AUDIO_DEVICE_NONE) {
ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE");
}
break;
case AudioSystem::FORCE_SPEAKER:
// when not in a phone call, phone strategy should route STREAM_VOICE_CALL to
// A2DP speaker when forcing to speaker output
if (mHasA2dp && !isInCall() &&
(mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
(getA2dpOutput() != 0) && !mA2dpSuspended) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
if (device) break;
}
if (mPhoneState != AudioSystem::MODE_IN_CALL) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
if (device) break;
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
if (device) break;
}
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
if (device) break;
device = mDefaultOutputDevice;
if (device == AUDIO_DEVICE_NONE) {
ALOGE("getDeviceForStrategy() no device found for STRATEGY_PHONE, FORCE_SPEAKER");
}
break;
}
// FIXME: Why do need to replace with speaker? If voice call is active
// We should use device from STRATEGY_PHONE
#ifdef AUDIO_EXTN_FM_ENABLED
if (mAvailableOutputDevices & AUDIO_DEVICE_OUT_FM) {
if (mForceUse[AudioSystem::FOR_MEDIA] == AudioSystem::FORCE_SPEAKER) {
device = AUDIO_DEVICE_OUT_SPEAKER;
}
}
#endif
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 /*fromCache*/);
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
// - in countries where not enforced in which case it follows STRATEGY_MEDIA
if ((strategy == STRATEGY_SONIFICATION) ||
(mForceUse[AudioSystem::FOR_SYSTEM] == AudioSystem::FORCE_SYSTEM_ENFORCED)) {
device = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
if (device == AUDIO_DEVICE_NONE) {
ALOGE("getDeviceForStrategy() speaker device not found for STRATEGY_SONIFICATION");
}
}
// The second device used for sonification is the same as the device used by media strategy
// FALL THROUGH
case STRATEGY_MEDIA: {
uint32_t device2 = AUDIO_DEVICE_NONE;
if (isInCall() && (device == AUDIO_DEVICE_NONE)) {
// when in call, get the device for Phone strategy
device = getDeviceForStrategy(STRATEGY_PHONE, false /*fromCache*/);
break;
}
#ifdef AUDIO_EXTN_FM_ENABLED
if (mForceUse[AudioSystem::FOR_MEDIA] == AudioSystem::FORCE_SPEAKER) {
device = AUDIO_DEVICE_OUT_SPEAKER;
break;
}
#endif
if (strategy != STRATEGY_SONIFICATION) {
// no sonification on remote submix (e.g. WFD)
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_REMOTE_SUBMIX;
}
if ((device2 == AUDIO_DEVICE_NONE) &&
mHasA2dp && (mForceUse[AudioSystem::FOR_MEDIA] != AudioSystem::FORCE_NO_BT_A2DP) &&
(getA2dpOutput() != 0) && !mA2dpSuspended) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
}
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADPHONE;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_WIRED_HEADSET;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_ACCESSORY;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_USB_DEVICE;
}
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET;
}
if ((strategy != STRATEGY_SONIFICATION) && (device == AUDIO_DEVICE_NONE)
&& (device2 == AUDIO_DEVICE_NONE)) {
// no sonification on aux digital (e.g. HDMI)
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_AUX_DIGITAL;
}
if ((device2 == AUDIO_DEVICE_NONE) &&
(mForceUse[AudioSystem::FOR_DOCK] == AudioSystem::FORCE_ANALOG_DOCK)
&& (strategy != STRATEGY_SONIFICATION)) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
}
#ifdef AUDIO_EXTN_FM_ENABLED
if ((strategy != STRATEGY_SONIFICATION) && (device == AUDIO_DEVICE_NONE)
&& (device2 == AUDIO_DEVICE_NONE)) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_FM_TX;
}
#endif
#ifdef AUDIO_EXTN_AFE_PROXY_ENABLED
if ((strategy != STRATEGY_SONIFICATION) && (device == AUDIO_DEVICE_NONE)
&& (device2 == AUDIO_DEVICE_NONE)) {
// no sonification on WFD sink
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_PROXY;
}
#endif
if (device2 == AUDIO_DEVICE_NONE) {
device2 = mAvailableOutputDevices & AUDIO_DEVICE_OUT_SPEAKER;
}
// device is DEVICE_OUT_SPEAKER if we come from case STRATEGY_SONIFICATION or
// STRATEGY_ENFORCED_AUDIBLE, AUDIO_DEVICE_NONE otherwise
device |= device2;
if (device) break;
device = mDefaultOutputDevice;
if (device == AUDIO_DEVICE_NONE) {
ALOGE("getDeviceForStrategy() no device found for STRATEGY_MEDIA");
}
} break;
default:
ALOGW("getDeviceForStrategy() unknown strategy: %d", strategy);
break;
}
ALOGVV("getDeviceForStrategy() strategy %d, device %x", strategy, device);
return device;
}
audio_devices_t AudioPolicyManager::getDeviceForInputSource(int inputSource)
{
uint32_t device = AUDIO_DEVICE_NONE;
switch (inputSource) {
case AUDIO_SOURCE_VOICE_UPLINK:
if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
device = AUDIO_DEVICE_IN_VOICE_CALL;
break;
}
// FALL THROUGH
case AUDIO_SOURCE_DEFAULT:
case AUDIO_SOURCE_MIC:
case AUDIO_SOURCE_VOICE_RECOGNITION:
case AUDIO_SOURCE_HOTWORD:
case AUDIO_SOURCE_VOICE_COMMUNICATION:
if (mForceUse[AudioSystem::FOR_RECORD] == AudioSystem::FORCE_BT_SCO &&
mAvailableInputDevices & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
} else if (mAvailableInputDevices & AUDIO_DEVICE_IN_WIRED_HEADSET) {
device = AUDIO_DEVICE_IN_WIRED_HEADSET;
} else if (mAvailableInputDevices & AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET) {
device = AUDIO_DEVICE_IN_ANLG_DOCK_HEADSET;
} else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
device = AUDIO_DEVICE_IN_BUILTIN_MIC;
}
break;
case AUDIO_SOURCE_CAMCORDER:
if (mAvailableInputDevices & AUDIO_DEVICE_IN_BACK_MIC) {
device = AUDIO_DEVICE_IN_BACK_MIC;
} else if (mAvailableInputDevices & AUDIO_DEVICE_IN_BUILTIN_MIC) {
device = AUDIO_DEVICE_IN_BUILTIN_MIC;
}
break;
case AUDIO_SOURCE_VOICE_DOWNLINK:
case AUDIO_SOURCE_VOICE_CALL:
if (mAvailableInputDevices & AUDIO_DEVICE_IN_VOICE_CALL) {
device = AUDIO_DEVICE_IN_VOICE_CALL;
}
break;
case AUDIO_SOURCE_REMOTE_SUBMIX:
if (mAvailableInputDevices & AUDIO_DEVICE_IN_REMOTE_SUBMIX) {
device = AUDIO_DEVICE_IN_REMOTE_SUBMIX;
}
break;
#ifdef AUDIO_EXTN_FM_ENABLED
case AUDIO_SOURCE_FM_RX:
device = AUDIO_DEVICE_IN_FM_RX;
break;
case AUDIO_SOURCE_FM_RX_A2DP:
device = AUDIO_DEVICE_IN_FM_RX_A2DP;
break;
#endif
default:
ALOGW("getDeviceForInputSource() invalid input source %d", inputSource);
break;
}
ALOGV("getDeviceForInputSource()input source %d, device %08x", inputSource, device);
return device;
}
AudioPolicyManager::device_category AudioPolicyManager::getDeviceCategory(audio_devices_t device)
{
switch(getDeviceForVolume(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:
#ifdef AUDIO_EXTN_FM_ENABLED
case AUDIO_DEVICE_OUT_FM:
#endif
return DEVICE_CATEGORY_HEADSET;
case AUDIO_DEVICE_OUT_SPEAKER:
case AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT:
case AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER:
case AUDIO_DEVICE_OUT_AUX_DIGITAL:
case AUDIO_DEVICE_OUT_USB_ACCESSORY:
case AUDIO_DEVICE_OUT_USB_DEVICE:
case AUDIO_DEVICE_OUT_REMOTE_SUBMIX:
#ifdef AUDIO_EXTN_AFE_PROXY_ENABLED
case AUDIO_DEVICE_OUT_PROXY:
#endif
default:
return DEVICE_CATEGORY_SPEAKER;
}
}
status_t AudioPolicyManager::checkAndSetVolume(int stream,
int index,
audio_io_handle_t output,
audio_devices_t device,
int delayMs,
bool force)
{
ALOGV("checkAndSetVolume: index %d output %d device %x", index, output, device);
// do not change actual stream volume if the stream is muted
if (mOutputs.valueFor(output)->mMuteCount[stream] != 0) {
ALOGVV("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)) {
ALOGV("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;
ALOGV("checkAndSetVolume() for output %d stream %d, volume %f, delay %d", output, stream, volume, delayMs);
// 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);
#ifdef AUDIO_EXTN_FM_ENABLED
} else if (stream == AudioSystem::MUSIC &&
output == mPrimaryOutput) {
float fmVolume = -1.0;
fmVolume = computeVolume(stream, index, output, device);
if (fmVolume >= 0) {
AudioParameter param = AudioParameter();
param.addFloat(String8("fm_volume"), fmVolume);
ALOGV("checkAndSetVolume setParameters fm_volume, volume=:%f delay=:%d",fmVolume,delayMs*2);
//Double delayMs to avoid sound burst while device switch.
mpClientInterface->setParameters(mPrimaryOutput, param.toString(), delayMs*2);
}
#endif
}
mpClientInterface->setStreamVolume((AudioSystem::stream_type)stream, volume, output, delayMs);
}
if (stream == AudioSystem::VOICE_CALL ||
stream == AudioSystem::BLUETOOTH_SCO) {
float voiceVolume;
voiceVolume = (float)index/(float)mStreams[stream].mIndexMax;
// Force voice volume to max when Vgs is set for bluetooth SCO as volume is managed by the headset
if (stream == AudioSystem::BLUETOOTH_SCO) {
String8 key ("bt_headset_vgs");
mpClientInterface->getParameters(output,key);
AudioParameter result(mpClientInterface->getParameters(0,key));
int value;
if (result.getInt(String8("isVGS"),value) == NO_ERROR) {
ALOGV("Use BT-SCO Voice Volume");
voiceVolume = 1.0;
}
}
if (voiceVolume != mLastVoiceVolume && output == mPrimaryOutput) {
mpClientInterface->setVoiceVolume(voiceVolume, delayMs);
mLastVoiceVolume = voiceVolume;
}
}
return NO_ERROR;
}
float AudioPolicyManager::computeVolume(int stream,
int index,
audio_io_handle_t output,
audio_devices_t device)
{
float volume = 1.0;
AudioOutputDescriptor *outputDesc = mOutputs.valueFor(output);
if (device == AUDIO_DEVICE_NONE) {
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 == AUDIO_DEVICE_OUT_AUX_DIGITAL ||
device == AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET ||
device == AUDIO_DEVICE_OUT_USB_ACCESSORY ||
#ifdef AUDIO_EXTN_AFE_PROXY_ENABLED
device == AUDIO_DEVICE_OUT_PROXY ||
#endif
device == AUDIO_DEVICE_OUT_USB_DEVICE )) {
return 1.0;
}
#ifdef AUDIO_EXTN_INCALL_MUSIC_ENABLED
if (stream == AudioSystem::INCALL_MUSIC) {
return 1.0;
}
#endif
return AudioPolicyManagerBase::computeVolume(stream, index, output, device);
}
// This function checks for the parameters which can be offloaded.
// This can be enhanced depending on the capability of the DSP and policy
// of the system.
bool AudioPolicyManager::isOffloadSupported(const audio_offload_info_t& offloadInfo)
{
ALOGV(" isOffloadSupported: SR=%u, CM=0x%x, Format=0x%x, StreamType=%d,"
" BitRate=%u, duration=%lld us, has_video=%d",
offloadInfo.sample_rate, offloadInfo.channel_mask,
offloadInfo.format,
offloadInfo.stream_type, offloadInfo.bit_rate, offloadInfo.duration_us,
offloadInfo.has_video);
#ifdef VOICE_CONCURRENCY
if(isInCall())
{
ALOGD("\n blocking compress offload on call mode\n");
return false;
}
#endif
// Check if stream type is music, then only allow offload as of now.
if (offloadInfo.stream_type != AUDIO_STREAM_MUSIC)
{
ALOGV("isOffloadSupported: stream_type != MUSIC, returning false");
return false;
}
char propValue[PROPERTY_VALUE_MAX];
bool pcmOffload = false;
if (audio_is_offload_pcm(offloadInfo.format)) {
if(property_get("audio.offload.pcm.enable", propValue, NULL)) {
bool prop_enabled = atoi(propValue) || !strncmp("true", propValue, 4);
if (prop_enabled) {
ALOGW("PCM offload property is enabled");
pcmOffload = true;
}
}
if (!pcmOffload) {
ALOGV("PCM offload disabled by property audio.offload.pcm.enable");
return false;
}
}
if (!pcmOffload) {
// Check if offload has been disabled
if (property_get("audio.offload.disable", propValue, "0")) {
if (atoi(propValue) != 0) {
ALOGV("offload disabled by audio.offload.disable=%s", propValue );
return false;
}
}
//check if it's multi-channel AAC format
if (AudioSystem::popCount(offloadInfo.channel_mask) > 2
&& offloadInfo.format == AUDIO_FORMAT_AAC) {
ALOGV("offload disabled for multi-channel AAC format");
return false;
}
if (offloadInfo.has_video)
{
if(property_get("av.offload.enable", propValue, NULL)) {
bool prop_enabled = atoi(propValue) || !strncmp("true", propValue, 4);
if (!prop_enabled) {
ALOGW("offload disabled by av.offload.enable = %s ", propValue );
return false;
}
} else {
return false;
}
if(offloadInfo.is_streaming) {
if (property_get("av.streaming.offload.enable", propValue, NULL)) {
bool prop_enabled = atoi(propValue) || !strncmp("true", propValue, 4);
if (!prop_enabled) {
ALOGW("offload disabled by av.streaming.offload.enable = %s ", propValue );
return false;
}
} else {
//Do not offload AV streamnig if the property is not defined
return false;
}
}
ALOGV("isOffloadSupported: has_video == true, property\
set to enable offload");
}
}
//If duration is less than minimum value defined in property, return false
if (property_get("audio.offload.min.duration.secs", propValue, NULL)) {
if (offloadInfo.duration_us < (atoi(propValue) * 1000000 )) {
ALOGV("Offload denied by duration < audio.offload.min.duration.secs(=%s)", propValue);
return false;
}
} else if (offloadInfo.duration_us < OFFLOAD_DEFAULT_MIN_DURATION_SECS * 1000000) {
ALOGV("Offload denied by duration < default min(=%u)", OFFLOAD_DEFAULT_MIN_DURATION_SECS);
//duration checks only valid for MP3/AAC formats,
//do not check duration for other audio formats, e.g. dolby AAC/AC3 and amrwb+ formats
if (offloadInfo.format == AUDIO_FORMAT_MP3 || offloadInfo.format == AUDIO_FORMAT_AAC || pcmOffload)
return false;
}
// Do not allow offloading if one non offloadable effect is enabled. This prevents from
// creating an offloaded track and tearing it down immediately after start when audioflinger
// detects there is an active non offloadable effect.
// FIXME: We should check the audio session here but we do not have it in this context.
// This may prevent offloading in rare situations where effects are left active by apps
// in the background.
if (isNonOffloadableEffectEnabled()) {
return false;
}
// See if there is a profile to support this.
// AUDIO_DEVICE_NONE
IOProfile *profile = getProfileForDirectOutput(AUDIO_DEVICE_NONE /*ignore device */,
offloadInfo.sample_rate,
offloadInfo.format,
offloadInfo.channel_mask,
AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD);
ALOGV("isOffloadSupported() profile %sfound", profile != NULL ? "" : "NOT ");
return (profile != NULL);
}
extern "C" AudioPolicyInterface* createAudioPolicyManager(AudioPolicyClientInterface *clientInterface)
{
return new AudioPolicyManager(clientInterface);
}
extern "C" void destroyAudioPolicyManager(AudioPolicyInterface *interface)
{
delete interface;
}
}; // namespace android