[W][CDM] Add event handler for CDM companion transports (63da42c6) · Commits · e / os / android_frameworks_base

core/java/android/companion/CompanionDeviceManager.java

+89 −0

Original line number	Diff line number	Diff line
		@@ -436,6 +436,11 @@ public final class CompanionDeviceManager {
		private final ArrayList<OnTransportsChangedListenerProxy> mTransportsChangedListeners =
		new ArrayList<>();

		/** Association ID -> List of listeners */
		@GuardedBy("mTransportEventListeners")
		private final SparseArray<List<OnTransportEventListenerProxy>> mTransportEventListeners =
		new SparseArray<>();

		@GuardedBy("mMessageReceivedListeners")
		private final SparseArray<Set<OnMessageReceivedListenerProxy>> mMessageReceivedListeners =
		new SparseArray<>();
		@@ -1206,6 +1211,73 @@ public final class CompanionDeviceManager {
		}
		}

		/**
		* Adds a listener for an event reported by attached transport.
		*
		* @param executor The executor which will be used to invoke the listener.
		* @param listener Called when a transport reports an event.
		* @see com.android.server.companion.transport.Transport
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.USE_COMPANION_TRANSPORTS)
		public void addOnTransportEventListener(
		@NonNull @CallbackExecutor Executor executor,
		int associationId,
		@NonNull Consumer<Integer> listener) {
		if (mService == null) {
		Log.w(TAG, "CompanionDeviceManager service is not available.");
		return;
		}

		synchronized (mTransportsChangedListeners) {
		final OnTransportEventListenerProxy proxy = new OnTransportEventListenerProxy(
		executor, listener);
		try {
		mService.addOnTransportEventListener(associationId, proxy);
		} catch (RemoteException e) {
		throw e.rethrowFromSystemServer();
		}
		if (!mTransportEventListeners.contains(associationId)) {
		mTransportEventListeners.put(associationId, new ArrayList<>());
		}
		mTransportEventListeners.get(associationId).add(proxy);
		}
		}

		/**
		* Removes the registered listener for transport events.
		* @see com.android.server.companion.transport.Transport
		* @hide
		*/
		@RequiresPermission(android.Manifest.permission.USE_COMPANION_TRANSPORTS)
		public void removeOnTransportEventListener(int associationId,
		@NonNull Consumer<Integer> listener) {
		if (mService == null) {
		Log.w(TAG, "CompanionDeviceManager service is not available.");
		return;
		}

		synchronized (mTransportEventListeners) {
		if (!mTransportEventListeners.contains(associationId)) {
		throw new IllegalArgumentException("Association id=[" + associationId
		+ "] doesn't have any registered event listener.");
		}
		final Iterator<OnTransportEventListenerProxy> iterator =
		mTransportEventListeners.get(associationId).iterator();
		while (iterator.hasNext()) {
		final OnTransportEventListenerProxy proxy = iterator.next();
		if (proxy.mListener == listener) {
		try {
		mService.removeOnTransportEventListener(associationId, proxy);
		} catch (RemoteException e) {
		throw e.rethrowFromSystemServer();
		}
		iterator.remove();
		}
		}
		}
		}

		/**
		* Checks whether the bluetooth device represented by the mac address was recently associated
		* with the companion app. This allows these devices to skip the Bluetooth pairing dialog if
		@@ -2065,6 +2137,23 @@ public final class CompanionDeviceManager {
		}
		}

		private static class OnTransportEventListenerProxy
		extends IOnTransportEventListener.Stub {
		private final Executor mExecutor;
		private final Consumer<Integer> mListener;

		private OnTransportEventListenerProxy(Executor executor,
		Consumer<Integer> listener) {
		mExecutor = executor;
		mListener = listener;
		}

		@Override
		public void onTransportEvent(int eventCode) {
		mExecutor.execute(() -> mListener.accept(eventCode));
		}
		}

		private static class SystemDataTransferCallbackProxy extends ISystemDataTransferCallback.Stub {
		private final Executor mExecutor;
		private final OutcomeReceiver<Void, CompanionException> mCallback;

core/java/android/companion/ICompanionDeviceManager.aidl

+7 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@ import android.app.PendingIntent;
		import android.companion.IAssociationRequestCallback;
		import android.companion.IOnAssociationsChangedListener;
		import android.companion.IOnMessageReceivedListener;
		import android.companion.IOnTransportEventListener;
		import android.companion.IOnTransportsChangedListener;
		import android.companion.ISystemDataTransferCallback;
		import android.companion.AssociationInfo;
		@@ -98,6 +99,12 @@ interface ICompanionDeviceManager {
		@EnforcePermission("USE_COMPANION_TRANSPORTS")
		void removeOnMessageReceivedListener(int messageType, IOnMessageReceivedListener listener);

		@EnforcePermission("USE_COMPANION_TRANSPORTS")
		void addOnTransportEventListener(int associationId, IOnTransportEventListener listener);

		@EnforcePermission("USE_COMPANION_TRANSPORTS")
		void removeOnTransportEventListener(int associationId, IOnTransportEventListener listener);

		@EnforcePermission("REQUEST_COMPANION_SELF_MANAGED")
		void notifySelfManagedDeviceAppeared(int associationId);

core/java/android/companion/IOnTransportEventListener.aidl

0 → 100644

+22 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2025 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 per missions and
		* limitations under the License.
		*/

		package android.companion;

		/** @hide */
		interface IOnTransportEventListener {
		oneway void onTransportEvent(int eventCode);
		}
		No newline at end of file

services/companion/java/com/android/server/companion/CompanionDeviceManagerService.java

+19 −0

Original line number	Diff line number	Diff line
		@@ -64,6 +64,7 @@ import android.companion.IAssociationRequestCallback;
		import android.companion.ICompanionDeviceManager;
		import android.companion.IOnAssociationsChangedListener;
		import android.companion.IOnMessageReceivedListener;
		import android.companion.IOnTransportEventListener;
		import android.companion.IOnTransportsChangedListener;
		import android.companion.ISystemDataTransferCallback;
		import android.companion.ObservingDevicePresenceRequest;
		@@ -418,6 +419,24 @@ public class CompanionDeviceManagerService extends SystemService {
		mTransportManager.removeListener(messageType, listener);
		}

		@Override
		@EnforcePermission(USE_COMPANION_TRANSPORTS)
		public void addOnTransportEventListener(int associationId,
		IOnTransportEventListener listener) {
		addOnTransportEventListener_enforcePermission();

		mTransportManager.addListener(associationId, listener);
		}

		@Override
		@EnforcePermission(USE_COMPANION_TRANSPORTS)
		public void removeOnTransportEventListener(int associationId,
		IOnTransportEventListener listener) {
		removeOnTransportEventListener_enforcePermission();

		mTransportManager.removeListener(associationId, listener);
		}

		/**
		* @deprecated use {@link #disassociate(int)} instead
		*/

services/companion/java/com/android/server/companion/association/DisassociationProcessor.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -137,7 +137,8 @@ public class DisassociationProcessor {
		return;
		}

		// Detach transport if exists
		// Detach transports and listeners if exists
		mTransportManager.removeListeners(id);
		mTransportManager.detachSystemDataTransport(id);

		// Association cleanup.