/* LGE_CHANGE_E [email protected] 2010.01.27 */ status_t AudioPolicyManagerALSA::stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream) { LOGV("stopOutput() output %d, stream %d", output, stream); ssize_t index = mOutputs.indexOfKey(output); if (index < 0) { LOGW("stopOutput() unknow output %d", output); return BAD_VALUE; } AudioOutputDescriptor *outputDesc = mOutputs.valueAt(index); routing_strategy strategy = getStrategy((AudioSystem::stream_type)stream); // handle special case for sonification while in call if (mPhoneState == AudioSystem::MODE_IN_CALL) { handleIncallSonification(stream, false, false); } if (outputDesc->isUsedByStrategy(strategy)) { // decrement usage count of this stream on the output outputDesc->changeRefCount(stream, -1); if (!outputDesc->isUsedByStrategy(strategy)) { // if the stream is the last of its strategy to use this output, change routing // in the following order or priority: // PHONE > SONIFICATION > MEDIA > DTMF uint32_t newDevice = 0; if (outputDesc->isUsedByStrategy(STRATEGY_PHONE)) { newDevice = getDeviceForStrategy(STRATEGY_PHONE); } else if (outputDesc->isUsedByStrategy(STRATEGY_SONIFICATION)) { newDevice = getDeviceForStrategy(STRATEGY_SONIFICATION); } else if (mPhoneState == AudioSystem::MODE_IN_CALL) { newDevice = getDeviceForStrategy(STRATEGY_PHONE); } else if (outputDesc->isUsedByStrategy(STRATEGY_MEDIA)) { newDevice = getDeviceForStrategy(STRATEGY_MEDIA); } else if (outputDesc->isUsedByStrategy(STRATEGY_DTMF)) { newDevice = getDeviceForStrategy(STRATEGY_DTMF); } // apply routing change if necessary. // insert a delay of 2 times the audio hardware latency to ensure PCM // buffers in audio flinger and audio hardware are emptied before the // routing change is executed. setOutputDevice(mHardwareOutput, newDevice, false, mOutputs.valueFor(mHardwareOutput)->mLatency*2); } // store time at which the last music track was stopped - see computeVolume() if (stream == AudioSystem::MUSIC) { mMusicStopTime = systemTime(); } return NO_ERROR; } else { LOGW("stopOutput() refcount is already 0 for output %d", output); return INVALID_OPERATION; } }
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;
}
}
