/** Called each time a new audio device has been added or removed. */
private void onAudioManagerChangedState() {
Log.d(
TAG,
"onAudioManagerChangedState: devices="
+ audioDevices
+ ", selected="
+ selectedAudioDevice);
// Enable the proximity sensor if there are two available audio devices
// in the list. Given the current implementation, we know that the choice
// will then be between EARPIECE and SPEAKER_PHONE.
if (audioDevices.size() == 2) {
AppRTCUtils.assertIsTrue(
audioDevices.contains(AudioDevice.EARPIECE)
&& audioDevices.contains(AudioDevice.SPEAKER_PHONE));
// Start the proximity sensor.
proximitySensor.start();
} else if (audioDevices.size() == 1) {
// Stop the proximity sensor since it is no longer needed.
proximitySensor.stop();
} else {
Log.e(TAG, "Invalid device list");
}
if (onStateChangeListener != null) {
// Run callback to notify a listening client. The client can then
// use public getters to query the new state.
onStateChangeListener.run();
}
}
private AppRTCAudioManager(Context context, Runnable deviceStateChangeListener) {
apprtcContext = context;
onStateChangeListener = deviceStateChangeListener;
audioManager = ((AudioManager) context.getSystemService(Context.AUDIO_SERVICE));
// Create and initialize the proximity sensor.
// Tablet devices (e.g. Nexus 7) does not support proximity sensors.
// Note that, the sensor will not be active until start() has been called.
proximitySensor =
AppRTCProximitySensor.create(
context,
new Runnable() {
// This method will be called each time a state change is detected.
// Example: user holds his hand over the device (closer than ~5 cm),
// or removes his hand from the device.
public void run() {
onProximitySensorChangedState();
}
});
AppRTCUtils.logDeviceInfo(TAG);
}
/** Changes selection of the currently active audio device. */
public void setAudioDevice(AudioDevice device) {
Log.d(TAG, "setAudioDevice(device=" + device + ")");
AppRTCUtils.assertIsTrue(audioDevices.contains(device));
switch (device) {
case SPEAKER_PHONE:
setSpeakerphoneOn(true);
selectedAudioDevice = AudioDevice.SPEAKER_PHONE;
break;
case EARPIECE:
setSpeakerphoneOn(false);
selectedAudioDevice = AudioDevice.EARPIECE;
break;
case WIRED_HEADSET:
setSpeakerphoneOn(false);
selectedAudioDevice = AudioDevice.WIRED_HEADSET;
break;
default:
Log.e(TAG, "Invalid audio device selection");
break;
}
onAudioManagerChangedState();
}