| /* |
| * Copyright 2019 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 permissions and |
| * limitations under the License. |
| */ |
| |
| package android.media; |
| |
| import static com.android.internal.util.function.pooled.PooledLambda.obtainMessage; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.app.Service; |
| import android.content.Intent; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import java.util.Objects; |
| |
| /** |
| * @hide |
| */ |
| public abstract class MediaRoute2ProviderService extends Service { |
| private static final String TAG = "MR2ProviderService"; |
| |
| public static final String SERVICE_INTERFACE = "android.media.MediaRoute2ProviderService"; |
| |
| private final Handler mHandler; |
| private ProviderStub mStub; |
| private IMediaRoute2ProviderClient mClient; |
| private MediaRoute2ProviderInfo mProviderInfo; |
| |
| public MediaRoute2ProviderService() { |
| mHandler = new Handler(Looper.getMainLooper()); |
| } |
| |
| @Override |
| public IBinder onBind(@NonNull Intent intent) { |
| //TODO: Allow binding from media router service only? |
| if (SERVICE_INTERFACE.equals(intent.getAction())) { |
| if (mStub == null) { |
| mStub = new ProviderStub(); |
| } |
| return mStub; |
| } |
| return null; |
| } |
| |
| /** |
| * Called when selectRoute is called on a route of the provider. |
| * Once the route is ready to be used , call {@link #notifyRouteSelected(SelectToken, Bundle)} |
| * to notify that. |
| * |
| * @param packageName the package name of the application that selected the route |
| * @param routeId the id of the route being selected |
| * @param token token that contains select info |
| * |
| * @see #notifyRouteSelected |
| */ |
| public abstract void onSelectRoute(@NonNull String packageName, @NonNull String routeId, |
| @NonNull SelectToken token); |
| |
| /** |
| * Called when unselectRoute is called on a route of the provider. |
| * |
| * @param packageName the package name of the application that has selected the route. |
| * @param routeId the id of the route being unselected |
| */ |
| public abstract void onUnselectRoute(@NonNull String packageName, @NonNull String routeId); |
| |
| /** |
| * Called when sendControlRequest is called on a route of the provider |
| * |
| * @param routeId the id of the target route |
| * @param request the media control request intent |
| */ |
| //TODO: Discuss what to use for request (e.g., Intent? Request class?) |
| public abstract void onControlRequest(@NonNull String routeId, @NonNull Intent request); |
| |
| /** |
| * Called when requestSetVolume is called on a route of the provider |
| * @param routeId the id of the route |
| * @param volume the target volume |
| */ |
| public abstract void onSetVolume(@NonNull String routeId, int volume); |
| |
| /** |
| * Called when requestUpdateVolume is called on a route of the provider |
| * @param routeId id of the route |
| * @param delta the delta to add to the current volume |
| */ |
| public abstract void onUpdateVolume(@NonNull String routeId, int delta); |
| |
| /** |
| * Updates provider info and publishes routes |
| */ |
| public final void setProviderInfo(MediaRoute2ProviderInfo info) { |
| mProviderInfo = info; |
| publishState(); |
| } |
| |
| /** |
| * Notifies the client of that the selected route is ready for use. If the selected route can be |
| * controlled, pass a {@link Bundle} that contains how to control it. |
| * |
| * @param token token passed in {@link #onSelectRoute} |
| * @param controlHints a {@link Bundle} that contains how to control the given route. |
| * Pass {@code null} if the route is not available. |
| */ |
| public final void notifyRouteSelected(@NonNull SelectToken token, |
| @Nullable Bundle controlHints) { |
| Objects.requireNonNull(token, "token must not be null"); |
| |
| if (mClient == null) { |
| return; |
| } |
| try { |
| mClient.notifyRouteSelected(token.mPackageName, token.mRouteId, |
| controlHints, token.mSeq); |
| } catch (RemoteException ex) { |
| Log.w(TAG, "Failed to notify route selected"); |
| } |
| } |
| |
| void setClient(IMediaRoute2ProviderClient client) { |
| mClient = client; |
| publishState(); |
| } |
| |
| void publishState() { |
| if (mClient == null) { |
| return; |
| } |
| try { |
| mClient.updateProviderInfo(mProviderInfo); |
| } catch (RemoteException ex) { |
| Log.w(TAG, "Failed to send onProviderInfoUpdated"); |
| } |
| } |
| |
| /** |
| * Route selection information. |
| * |
| * @see #notifyRouteSelected |
| */ |
| public final class SelectToken { |
| final String mPackageName; |
| final String mRouteId; |
| final int mSeq; |
| |
| SelectToken(String packageName, String routeId, int seq) { |
| mPackageName = packageName; |
| mRouteId = routeId; |
| mSeq = seq; |
| } |
| } |
| |
| final class ProviderStub extends IMediaRoute2Provider.Stub { |
| ProviderStub() { } |
| |
| @Override |
| public void setClient(IMediaRoute2ProviderClient client) { |
| mHandler.sendMessage(obtainMessage(MediaRoute2ProviderService::setClient, |
| MediaRoute2ProviderService.this, client)); |
| } |
| |
| @Override |
| public void requestSelectRoute(String packageName, String id, int seq) { |
| mHandler.sendMessage(obtainMessage(MediaRoute2ProviderService::onSelectRoute, |
| MediaRoute2ProviderService.this, packageName, id, |
| new SelectToken(packageName, id, seq))); |
| |
| } |
| |
| @Override |
| public void unselectRoute(String packageName, String id) { |
| mHandler.sendMessage(obtainMessage(MediaRoute2ProviderService::onUnselectRoute, |
| MediaRoute2ProviderService.this, packageName, id)); |
| } |
| |
| @Override |
| public void notifyControlRequestSent(String id, Intent request) { |
| mHandler.sendMessage(obtainMessage(MediaRoute2ProviderService::onControlRequest, |
| MediaRoute2ProviderService.this, id, request)); |
| } |
| |
| @Override |
| public void requestSetVolume(String id, int volume) { |
| mHandler.sendMessage(obtainMessage(MediaRoute2ProviderService::onSetVolume, |
| MediaRoute2ProviderService.this, id, volume)); |
| } |
| |
| @Override |
| public void requestUpdateVolume(String id, int delta) { |
| mHandler.sendMessage(obtainMessage(MediaRoute2ProviderService::onUpdateVolume, |
| MediaRoute2ProviderService.this, id, delta)); |
| } |
| } |
| } |