1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.accessorydisplay.common; 18 19 import com.android.accessorydisplay.common.Transport; 20 21 import android.content.Context; 22 import android.os.Looper; 23 24 import java.nio.ByteBuffer; 25 26 /** 27 * Base implementation of a service that communicates over a transport. 28 * <p> 29 * This object's interface is single-threaded. It is only intended to be 30 * accessed from the {@link Looper} thread on which the transport was created. 31 * </p> 32 */ 33 public abstract class Service implements Transport.Callback { 34 private final Context mContext; 35 private final Transport mTransport; 36 private final int mServiceId; 37 38 public Service(Context context, Transport transport, int serviceId) { 39 mContext = context; 40 mTransport = transport; 41 mServiceId = serviceId; 42 } 43 44 public Context getContext() { 45 return mContext; 46 } 47 48 public int getServiceId() { 49 return mServiceId; 50 } 51 52 public Transport getTransport() { 53 return mTransport; 54 } 55 56 public Logger getLogger() { 57 return mTransport.getLogger(); 58 } 59 60 public void start() { 61 mTransport.registerService(mServiceId, this); 62 } 63 64 public void stop() { 65 mTransport.unregisterService(mServiceId); 66 } 67 68 @Override 69 public void onMessageReceived(int service, int what, ByteBuffer content) { 70 } 71 } 72
