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;
} 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;
} 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();
}
// 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, mPrimaryOutput);
}
if (isStateInCall(state)) {
for (size_t i = 0; i < mOutputs.size(); i++) {
AudioOutputDescriptor *desc = mOutputs.valueAt(i);
//take the biggest latency for all outputs
if (delayMs < desc->mLatency*2) {
delayMs = desc->mLatency*2;
}
//mute STRATEGY_MEDIA on all outputs
if (desc->strategyRefCount(STRATEGY_MEDIA) != 0) {
setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i));
setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS,
getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/));
}
}
}
// Ignore the delay to enable voice call on this target as the enabling the
// voice call has enough delay to make sure the ringtone audio completely
// played out
if (state == AudioSystem::MODE_IN_CALL && oldState == AudioSystem::MODE_RINGTONE) {
delayMs = 40;
}
// change routing is necessary
setOutputDevice(mPrimaryOutput, newDevice, force, delayMs);
// 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);
// 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, mPrimaryOutput, 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;
}
}
status_t AudioPolicyManager::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;
}
#ifdef HAVE_FM_RADIO
if (device == AudioSystem::DEVICE_OUT_FM) {
AudioOutputDescriptor *out = mOutputs.valueFor(mHardwareOutput);
if (state == AudioSystem::DEVICE_STATE_AVAILABLE) {
out->changeRefCount(AudioSystem::FM, 1);
if (out->mRefCount[AudioSystem::FM] > 0)
mpClientInterface->setParameters(0, String8("fm_on=1"));
}
else {
out->changeRefCount(AudioSystem::FM, -1);
if (out->mRefCount[AudioSystem::FM] <= 0)
mpClientInterface->setParameters(0, String8("fm_off=1"));
}
}
#endif
// 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;
}