Handle media button events during phone calls and when ringing (722b8086) · Commits · e / os / android_frameworks_base

media/java/android/media/AudioManager.java

+31 −0

Original line number	Diff line number	Diff line
		@@ -1999,6 +1999,37 @@ public class AudioManager {
		}
		}

		/**
		* @hide
		* Used internally by telephony package to register an intent receiver for ACTION_MEDIA_BUTTON.
		* @param eventReceiver the component that will receive the media button key events,
		* no-op if eventReceiver is null
		*/
		public void registerMediaButtonEventReceiverForCalls(ComponentName eventReceiver) {
		if (eventReceiver == null) {
		return;
		}
		IAudioService service = getService();
		try {
		// eventReceiver != null
		service.registerMediaButtonEventReceiverForCalls(eventReceiver);
		} catch (RemoteException e) {
		Log.e(TAG, "Dead object in registerMediaButtonEventReceiverForCalls", e);
		}
		}

		/**
		* @hide
		*/
		public void unregisterMediaButtonEventReceiverForCalls() {
		IAudioService service = getService();
		try {
		service.unregisterMediaButtonEventReceiverForCalls();
		} catch (RemoteException e) {
		Log.e(TAG, "Dead object in unregisterMediaButtonEventReceiverForCalls", e);
		}
		}

		/**
		* Unregister the receiver of MEDIA_BUTTON intents.
		* @param eventReceiver identifier of a {@link android.content.BroadcastReceiver}

media/java/android/media/AudioService.java

+61 −5

Original line number	Diff line number	Diff line
		@@ -3625,14 +3625,16 @@ public class AudioService extends IAudioService.Stub implements OnFinished {
		Log.e(TAG, "not dispatching invalid media key event " + keyEvent);
		return;
		}
		// event filtering based on audio mode
		// event filtering for telephony
		synchronized(mRingingLock) {
		if (mIsRinging \|\| (getMode() == AudioSystem.MODE_IN_CALL) \|\|
		(getMode() == AudioSystem.MODE_IN_COMMUNICATION) \|\|
		(getMode() == AudioSystem.MODE_RINGTONE) ) {
		synchronized(mRCStack) {
		if ((mMediaReceiverForCalls != null) &&
		(mIsRinging \|\| (getMode() == AudioSystem.MODE_IN_CALL))) {
		dispatchMediaKeyEventForCalls(keyEvent, needWakeLock);
		return;
		}
		}
		}
		// event filtering based on voice-based interactions
		if (isValidVoiceInputKeyCode(keyEvent.getKeyCode())) {
		filterVoiceInputKeyEvent(keyEvent, needWakeLock);
		@@ -3641,6 +3643,25 @@ public class AudioService extends IAudioService.Stub implements OnFinished {
		}
		}

		/**
		* Handles the dispatching of the media button events to the telephony package.
		* Precondition: mMediaReceiverForCalls != null
		* @param keyEvent a non-null KeyEvent whose key code is one of the supported media buttons
		* @param needWakeLock true if a PARTIAL_WAKE_LOCK needs to be held while this key event
		* is dispatched.
		*/
		private void dispatchMediaKeyEventForCalls(KeyEvent keyEvent, boolean needWakeLock) {
		Intent keyIntent = new Intent(Intent.ACTION_MEDIA_BUTTON, null);
		keyIntent.putExtra(Intent.EXTRA_KEY_EVENT, keyEvent);
		keyIntent.setPackage(mMediaReceiverForCalls.getPackageName());
		if (needWakeLock) {
		mMediaEventWakeLock.acquire();
		keyIntent.putExtra(EXTRA_WAKELOCK_ACQUIRED, WAKELOCK_RELEASE_ON_FINISHED);
		}
		mContext.sendOrderedBroadcast(keyIntent, null, mKeyEventDone,
		mAudioHandler, Activity.RESULT_OK, null, null);
		}

		/**
		* Handles the dispatching of the media button events to one of the registered listeners,
		* or if there was none, broadcast an ACTION_MEDIA_BUTTON intent to the rest of the system.
		@@ -4027,6 +4048,12 @@ public class AudioService extends IAudioService.Stub implements OnFinished {
		*/
		private final Stack<RemoteControlStackEntry> mRCStack = new Stack<RemoteControlStackEntry>();

		/**
		* The component the telephony package can register so telephony calls have priority to
		* handle media button events
		*/
		private ComponentName mMediaReceiverForCalls = null;

		/**
		* Helper function:
		* Display in the log the current entries in the remote control focus stack
		@@ -4380,6 +4407,35 @@ public class AudioService extends IAudioService.Stub implements OnFinished {
		}
		}

		/**
		* see AudioManager.registerMediaButtonEventReceiverForCalls(ComponentName c)
		* precondition: c != null
		*/
		public void registerMediaButtonEventReceiverForCalls(ComponentName c) {
		if (mContext.checkCallingPermission("android.permission.MODIFY_PHONE_STATE")
		!= PackageManager.PERMISSION_GRANTED) {
		Log.e(TAG, "Invalid permissions to register media button receiver for calls");
		return;
		}
		synchronized(mRCStack) {
		mMediaReceiverForCalls = c;
		}
		}

		/**
		* see AudioManager.unregisterMediaButtonEventReceiverForCalls()
		*/
		public void unregisterMediaButtonEventReceiverForCalls() {
		if (mContext.checkCallingPermission("android.permission.MODIFY_PHONE_STATE")
		!= PackageManager.PERMISSION_GRANTED) {
		Log.e(TAG, "Invalid permissions to unregister media button receiver for calls");
		return;
		}
		synchronized(mRCStack) {
		mMediaReceiverForCalls = null;
		}
		}

		/**
		* see AudioManager.registerRemoteControlClient(ComponentName eventReceiver, ...)
		* Note: using this method with rcClient == null is a way to "disable" the IRemoteControlClient

media/java/android/media/IAudioService.aidl

+3 −0

Original line number	Diff line number	Diff line
		@@ -109,6 +109,9 @@ interface IAudioService {
		oneway void registerMediaButtonIntent(in PendingIntent pi, in ComponentName c);
		oneway void unregisterMediaButtonIntent(in PendingIntent pi, in ComponentName c);

		oneway void registerMediaButtonEventReceiverForCalls(in ComponentName c);
		oneway void unregisterMediaButtonEventReceiverForCalls();

		oneway void registerRemoteControlClient(in PendingIntent mediaIntent,
		in IRemoteControlClient rcClient, in String callingPackageName);
		oneway void unregisterRemoteControlClient(in PendingIntent mediaIntent,