| /* |
| * Copyright (C) 2016 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 com.android.server.tv; |
| |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.ServiceConnection; |
| import android.media.tv.ITvRemoteProvider; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.util.Log; |
| import android.util.Slog; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * Maintains a connection to a tv remote provider service. |
| */ |
| final class TvRemoteProviderProxy implements ServiceConnection { |
| private static final String TAG = "TvRemoteProviderProxy"; |
| private static final boolean DEBUG = Log.isLoggable(TAG, Log.VERBOSE); |
| |
| |
| // This should match TvRemoteProvider.ACTION_TV_REMOTE_PROVIDER |
| protected static final String SERVICE_INTERFACE = |
| "com.android.media.tv.remoteprovider.TvRemoteProvider"; |
| private final Context mContext; |
| private final Object mLock; |
| private final ComponentName mComponentName; |
| private final int mUserId; |
| private final int mUid; |
| |
| // State changes happen only in the main thread, hence no lock is needed |
| private boolean mRunning; |
| private boolean mBound; |
| private boolean mConnected; |
| |
| TvRemoteProviderProxy(Context context, Object lock, |
| ComponentName componentName, int userId, int uid) { |
| mContext = context; |
| mLock = lock; |
| mComponentName = componentName; |
| mUserId = userId; |
| mUid = uid; |
| } |
| |
| public void dump(PrintWriter pw, String prefix) { |
| pw.println(prefix + "Proxy"); |
| pw.println(prefix + " mUserId=" + mUserId); |
| pw.println(prefix + " mRunning=" + mRunning); |
| pw.println(prefix + " mBound=" + mBound); |
| pw.println(prefix + " mConnected=" + mConnected); |
| } |
| |
| public boolean hasComponentName(String packageName, String className) { |
| return mComponentName.getPackageName().equals(packageName) |
| && mComponentName.getClassName().equals(className); |
| } |
| |
| public void start() { |
| if (!mRunning) { |
| if (DEBUG) { |
| Slog.d(TAG, this + ": Starting"); |
| } |
| |
| mRunning = true; |
| bind(); |
| } |
| } |
| |
| public void stop() { |
| if (mRunning) { |
| if (DEBUG) { |
| Slog.d(TAG, this + ": Stopping"); |
| } |
| |
| mRunning = false; |
| unbind(); |
| } |
| } |
| |
| public void rebindIfDisconnected() { |
| if (mRunning && !mConnected) { |
| unbind(); |
| bind(); |
| } |
| } |
| |
| private void bind() { |
| if (!mBound) { |
| if (DEBUG) { |
| Slog.d(TAG, this + ": Binding"); |
| } |
| |
| Intent service = new Intent(SERVICE_INTERFACE); |
| service.setComponent(mComponentName); |
| try { |
| mBound = mContext.bindServiceAsUser(service, this, |
| Context.BIND_AUTO_CREATE | Context.BIND_FOREGROUND_SERVICE, |
| new UserHandle(mUserId)); |
| if (DEBUG && !mBound) { |
| Slog.d(TAG, this + ": Bind failed"); |
| } |
| } catch (SecurityException ex) { |
| if (DEBUG) { |
| Slog.d(TAG, this + ": Bind failed", ex); |
| } |
| } |
| } |
| } |
| |
| private void unbind() { |
| if (mBound) { |
| if (DEBUG) { |
| Slog.d(TAG, this + ": Unbinding"); |
| } |
| |
| mBound = false; |
| mContext.unbindService(this); |
| } |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| if (DEBUG) { |
| Slog.d(TAG, this + ": onServiceConnected()"); |
| } |
| |
| mConnected = true; |
| |
| final ITvRemoteProvider provider = ITvRemoteProvider.Stub.asInterface(service); |
| if (provider == null) { |
| Slog.e(TAG, this + ": Invalid binder"); |
| return; |
| } |
| |
| try { |
| provider.setRemoteServiceInputSink(new TvRemoteServiceInput(mLock, provider)); |
| } catch (RemoteException e) { |
| Slog.e(TAG, this + ": Failed remote call to setRemoteServiceInputSink"); |
| } |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| mConnected = false; |
| |
| if (DEBUG) { |
| Slog.d(TAG, this + ": onServiceDisconnected()"); |
| } |
| } |
| } |