1 /* 2 * Copyright 2018 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 package com.android.bluetooth.hfp; 17 18 import android.bluetooth.BluetoothDevice; 19 import android.os.Looper; 20 import android.util.Log; 21 22 import com.android.bluetooth.Utils; 23 import com.android.bluetooth.btservice.AdapterService; 24 25 /** 26 * Factory class for object initialization to help with unit testing 27 */ 28 public class HeadsetObjectsFactory { 29 private static final String TAG = HeadsetObjectsFactory.class.getSimpleName(); 30 private static HeadsetObjectsFactory sInstance; 31 private static final Object INSTANCE_LOCK = new Object(); 32 HeadsetObjectsFactory()33 private HeadsetObjectsFactory() {} 34 35 /** 36 * Get the singleton instance of object factory 37 * 38 * @return the singleton instance, guaranteed not null 39 */ getInstance()40 public static HeadsetObjectsFactory getInstance() { 41 synchronized (INSTANCE_LOCK) { 42 if (sInstance == null) { 43 sInstance = new HeadsetObjectsFactory(); 44 } 45 } 46 return sInstance; 47 } 48 49 /** 50 * Allow unit tests to substitute HeadsetObjectsFactory with a test instance 51 * 52 * @param objectsFactory a test instance of the HeadsetObjectsFactory 53 */ setInstanceForTesting(HeadsetObjectsFactory objectsFactory)54 private static void setInstanceForTesting(HeadsetObjectsFactory objectsFactory) { 55 Utils.enforceInstrumentationTestMode(); 56 synchronized (INSTANCE_LOCK) { 57 Log.d(TAG, "setInstanceForTesting(), set to " + objectsFactory); 58 sInstance = objectsFactory; 59 } 60 } 61 62 /** 63 * Make a {@link HeadsetStateMachine} 64 * 65 * @param device the remote device associated with this state machine 66 * @param looper the thread that the state machine is supposed to run on 67 * @param headsetService the headset service 68 * @param adapterService the adapter service 69 * @param nativeInterface native interface 70 * @param systemInterface system interface 71 * @return a state machine that is initialized and started, ready to go 72 */ makeStateMachine(BluetoothDevice device, Looper looper, HeadsetService headsetService, AdapterService adapterService, HeadsetNativeInterface nativeInterface, HeadsetSystemInterface systemInterface)73 public HeadsetStateMachine makeStateMachine(BluetoothDevice device, Looper looper, 74 HeadsetService headsetService, AdapterService adapterService, 75 HeadsetNativeInterface nativeInterface, HeadsetSystemInterface systemInterface) { 76 return HeadsetStateMachine.make(device, looper, headsetService, adapterService, 77 nativeInterface, systemInterface); 78 } 79 80 /** 81 * Destroy a state machine 82 * 83 * @param stateMachine to be destroyed. Cannot be used after this call. 84 */ destroyStateMachine(HeadsetStateMachine stateMachine)85 public void destroyStateMachine(HeadsetStateMachine stateMachine) { 86 HeadsetStateMachine.destroy(stateMachine); 87 } 88 89 /** 90 * Get a system interface 91 * 92 * @param service headset service 93 * @return a system interface 94 */ makeSystemInterface(HeadsetService service)95 public HeadsetSystemInterface makeSystemInterface(HeadsetService service) { 96 return new HeadsetSystemInterface(service); 97 } 98 99 /** 100 * Get a singleton native interface 101 * 102 * @return the singleton native interface 103 */ getNativeInterface()104 public HeadsetNativeInterface getNativeInterface() { 105 return HeadsetNativeInterface.getInstance(); 106 } 107 } 108