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 17 package com.android.media; 18 19 import android.app.PendingIntent; 20 import android.content.Context; 21 import android.media.MediaLibraryService2; 22 import android.media.MediaLibraryService2.LibraryRoot; 23 import android.media.MediaLibraryService2.MediaLibrarySession; 24 import android.media.MediaLibraryService2.MediaLibrarySession.Builder; 25 import android.media.MediaLibraryService2.MediaLibrarySession.MediaLibrarySessionCallback; 26 import android.media.MediaPlayerBase; 27 import android.media.MediaPlaylistAgent; 28 import android.media.MediaSession2; 29 import android.media.MediaSession2.ControllerInfo; 30 import android.media.MediaSessionService2; 31 import android.media.SessionToken2; 32 import android.media.VolumeProvider2; 33 import android.media.update.MediaLibraryService2Provider; 34 import android.os.Bundle; 35 import android.text.TextUtils; 36 37 import com.android.media.MediaSession2Impl.BuilderBaseImpl; 38 39 import java.util.concurrent.Executor; 40 41 public class MediaLibraryService2Impl extends MediaSessionService2Impl implements 42 MediaLibraryService2Provider { 43 private final MediaSessionService2 mInstance; 44 private MediaLibrarySession mLibrarySession; 45 46 public MediaLibraryService2Impl(MediaLibraryService2 instance) { 47 super(instance); 48 mInstance = instance; 49 } 50 51 @Override 52 public void onCreate_impl() { 53 super.onCreate_impl(); 54 55 // Effectively final 56 MediaSession2 session = getSession(); 57 if (!(session instanceof MediaLibrarySession)) { 58 throw new RuntimeException("Expected MediaLibrarySession, but returned MediaSession2"); 59 } 60 mLibrarySession = (MediaLibrarySession) getSession(); 61 } 62 63 @Override 64 int getSessionType() { 65 return SessionToken2.TYPE_LIBRARY_SERVICE; 66 } 67 68 public static class MediaLibrarySessionImpl extends MediaSession2Impl 69 implements MediaLibrarySessionProvider { 70 public MediaLibrarySessionImpl(Context context, 71 MediaPlayerBase player, String id, MediaPlaylistAgent playlistAgent, 72 VolumeProvider2 volumeProvider, 73 PendingIntent sessionActivity, Executor callbackExecutor, 74 MediaLibrarySessionCallback callback) { 75 super(context, player, id, playlistAgent, volumeProvider, sessionActivity, 76 callbackExecutor, callback); 77 // Don't put any extra initialization here. Here's the reason. 78 // System service will recognize this session inside of the super constructor and would 79 // connect to this session assuming that initialization is finished. However, if any 80 // initialization logic is here, calls from the server would fail. 81 // see: MediaSession2Stub#connect() 82 } 83 84 @Override 85 MediaLibrarySession createInstance() { 86 return new MediaLibrarySession(this); 87 } 88 89 @Override 90 MediaLibrarySession getInstance() { 91 return (MediaLibrarySession) super.getInstance(); 92 } 93 94 @Override 95 MediaLibrarySessionCallback getCallback() { 96 return (MediaLibrarySessionCallback) super.getCallback(); 97 } 98 99 @Override 100 public void notifyChildrenChanged_impl(ControllerInfo controller, String parentId, 101 int itemCount, Bundle extras) { 102 if (controller == null) { 103 throw new IllegalArgumentException("controller shouldn't be null"); 104 } 105 if (parentId == null) { 106 throw new IllegalArgumentException("parentId shouldn't be null"); 107 } 108 getSessionStub().notifyChildrenChangedNotLocked(controller, parentId, itemCount, 109 extras); 110 } 111 112 @Override 113 public void notifyChildrenChanged_impl(String parentId, int itemCount, Bundle extras) { 114 if (parentId == null) { 115 throw new IllegalArgumentException("parentId shouldn't be null"); 116 } 117 getSessionStub().notifyChildrenChangedNotLocked(parentId, itemCount, extras); 118 } 119 120 @Override 121 public void notifySearchResultChanged_impl(ControllerInfo controller, String query, 122 int itemCount, Bundle extras) { 123 ensureCallingThread(); 124 if (controller == null) { 125 throw new IllegalArgumentException("controller shouldn't be null"); 126 } 127 if (TextUtils.isEmpty(query)) { 128 throw new IllegalArgumentException("query shouldn't be empty"); 129 } 130 getSessionStub().notifySearchResultChanged(controller, query, itemCount, extras); 131 } 132 } 133 134 public static class BuilderImpl 135 extends BuilderBaseImpl<MediaLibrarySession, MediaLibrarySessionCallback> { 136 public BuilderImpl(MediaLibraryService2 service, Builder instance, 137 Executor callbackExecutor, MediaLibrarySessionCallback callback) { 138 super(service); 139 setSessionCallback_impl(callbackExecutor, callback); 140 } 141 142 @Override 143 public MediaLibrarySession build_impl() { 144 return new MediaLibrarySessionImpl(mContext, mPlayer, mId, mPlaylistAgent, 145 mVolumeProvider, mSessionActivity, mCallbackExecutor, mCallback).getInstance(); 146 } 147 } 148 149 public static final class LibraryRootImpl implements LibraryRootProvider { 150 private final LibraryRoot mInstance; 151 private final String mRootId; 152 private final Bundle mExtras; 153 154 public LibraryRootImpl(LibraryRoot instance, String rootId, Bundle extras) { 155 if (rootId == null) { 156 throw new IllegalArgumentException("rootId shouldn't be null."); 157 } 158 mInstance = instance; 159 mRootId = rootId; 160 mExtras = extras; 161 } 162 163 @Override 164 public String getRootId_impl() { 165 return mRootId; 166 } 167 168 @Override 169 public Bundle getExtras_impl() { 170 return mExtras; 171 } 172 } 173 } 174
