1/* 2 * Copyright (C) 2014 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 17package android.support.v4.media.session; 18 19import android.app.PendingIntent; 20import android.content.Context; 21import android.media.AudioAttributes; 22import android.media.AudioManager; 23import android.media.MediaMetadata; 24import android.media.Rating; 25import android.media.session.MediaController; 26import android.media.session.MediaSession; 27import android.media.session.PlaybackState; 28import android.os.Bundle; 29import android.os.Handler; 30import android.os.ResultReceiver; 31import android.view.KeyEvent; 32 33import java.util.ArrayList; 34import java.util.List; 35 36class MediaControllerCompatApi21 { 37 public static Object fromToken(Context context, Object sessionToken) { 38 return new MediaController(context, (MediaSession.Token) sessionToken); 39 } 40 41 public static Object createCallback(Callback callback) { 42 return new CallbackProxy<Callback>(callback); 43 } 44 45 public static void registerCallback(Object controllerObj, Object callbackObj, Handler handler) { 46 ((MediaController) controllerObj).registerCallback( 47 (MediaController.Callback)callbackObj, handler); 48 } 49 50 public static void unregisterCallback(Object controllerObj, Object callbackObj) { 51 ((MediaController) controllerObj) 52 .unregisterCallback((MediaController.Callback) callbackObj); 53 } 54 55 public static Object getTransportControls(Object controllerObj) { 56 return ((MediaController)controllerObj).getTransportControls(); 57 } 58 59 public static Object getPlaybackState(Object controllerObj) { 60 return ((MediaController)controllerObj).getPlaybackState(); 61 } 62 63 public static Object getMetadata(Object controllerObj) { 64 return ((MediaController)controllerObj).getMetadata(); 65 } 66 67 public static List<Object> getQueue(Object controllerObj) { 68 List<MediaSession.QueueItem> queue = ((MediaController) controllerObj).getQueue(); 69 if (queue == null) { 70 return null; 71 } 72 List<Object> queueObjs = new ArrayList<Object>(queue); 73 return queueObjs; 74 } 75 76 public static CharSequence getQueueTitle(Object controllerObj) { 77 return ((MediaController) controllerObj).getQueueTitle(); 78 } 79 80 public static Bundle getExtras(Object controllerObj) { 81 return ((MediaController) controllerObj).getExtras(); 82 } 83 84 public static int getRatingType(Object controllerObj) { 85 return ((MediaController) controllerObj).getRatingType(); 86 } 87 88 public static long getFlags(Object controllerObj) { 89 return ((MediaController) controllerObj).getFlags(); 90 } 91 92 public static Object getPlaybackInfo(Object controllerObj) { 93 return ((MediaController) controllerObj).getPlaybackInfo(); 94 } 95 96 public static PendingIntent getSessionActivity(Object controllerObj) { 97 return ((MediaController) controllerObj).getSessionActivity(); 98 } 99 100 public static boolean dispatchMediaButtonEvent(Object controllerObj, KeyEvent event) { 101 return ((MediaController) controllerObj).dispatchMediaButtonEvent(event); 102 } 103 104 public static void setVolumeTo(Object controllerObj, int value, int flags) { 105 ((MediaController) controllerObj).setVolumeTo(value, flags); 106 } 107 108 public static void adjustVolume(Object controllerObj, int direction, int flags) { 109 ((MediaController) controllerObj).adjustVolume(direction, flags); 110 } 111 112 public static void sendCommand(Object controllerObj, 113 String command, Bundle params, ResultReceiver cb) { 114 ((MediaController) controllerObj).sendCommand(command, params, cb); 115 } 116 117 public static String getPackageName(Object controllerObj) { 118 return ((MediaController) controllerObj).getPackageName(); 119 } 120 121 public static class TransportControls { 122 public static void play(Object controlsObj) { 123 ((MediaController.TransportControls)controlsObj).play(); 124 } 125 126 public static void pause(Object controlsObj) { 127 ((MediaController.TransportControls)controlsObj).pause(); 128 } 129 130 public static void stop(Object controlsObj) { 131 ((MediaController.TransportControls)controlsObj).stop(); 132 } 133 134 public static void seekTo(Object controlsObj, long pos) { 135 ((MediaController.TransportControls)controlsObj).seekTo(pos); 136 } 137 138 public static void fastForward(Object controlsObj) { 139 ((MediaController.TransportControls)controlsObj).fastForward(); 140 } 141 142 public static void rewind(Object controlsObj) { 143 ((MediaController.TransportControls)controlsObj).rewind(); 144 } 145 146 public static void skipToNext(Object controlsObj) { 147 ((MediaController.TransportControls)controlsObj).skipToNext(); 148 } 149 150 public static void skipToPrevious(Object controlsObj) { 151 ((MediaController.TransportControls)controlsObj).skipToPrevious(); 152 } 153 154 public static void setRating(Object controlsObj, Object ratingObj) { 155 ((MediaController.TransportControls)controlsObj).setRating((Rating)ratingObj); 156 } 157 158 public static void playFromMediaId(Object controlsObj, String mediaId, Bundle extras) { 159 ((MediaController.TransportControls) controlsObj).playFromMediaId(mediaId, extras); 160 } 161 162 public static void playFromSearch(Object controlsObj, String query, Bundle extras) { 163 ((MediaController.TransportControls) controlsObj).playFromSearch(query, extras); 164 } 165 166 public static void skipToQueueItem(Object controlsObj, long id) { 167 ((MediaController.TransportControls) controlsObj).skipToQueueItem(id); 168 } 169 170 public static void sendCustomAction(Object controlsObj, String action, Bundle args) { 171 ((MediaController.TransportControls) controlsObj).sendCustomAction(action, args); 172 } 173 } 174 175 public static class PlaybackInfo { 176 public static int getPlaybackType(Object volumeInfoObj) { 177 return ((MediaController.PlaybackInfo)volumeInfoObj).getPlaybackType(); 178 } 179 180 public static AudioAttributes getAudioAttributes(Object volumeInfoObj) { 181 return ((MediaController.PlaybackInfo) volumeInfoObj).getAudioAttributes(); 182 } 183 184 public static int getLegacyAudioStream(Object volumeInfoObj) { 185 AudioAttributes attrs = getAudioAttributes(volumeInfoObj); 186 return toLegacyStreamType(attrs); 187 } 188 189 public static int getVolumeControl(Object volumeInfoObj) { 190 return ((MediaController.PlaybackInfo)volumeInfoObj).getVolumeControl(); 191 } 192 193 public static int getMaxVolume(Object volumeInfoObj) { 194 return ((MediaController.PlaybackInfo)volumeInfoObj).getMaxVolume(); 195 } 196 197 public static int getCurrentVolume(Object volumeInfoObj) { 198 return ((MediaController.PlaybackInfo)volumeInfoObj).getCurrentVolume(); 199 } 200 201 // This is copied from AudioAttributes.toLegacyStreamType. TODO This 202 // either needs to be kept in sync with that one or toLegacyStreamType 203 // needs to be made public so it can be used by the support lib. 204 private static final int FLAG_SCO = 0x1 << 2; 205 private static final int STREAM_BLUETOOTH_SCO = 6; 206 private static final int STREAM_SYSTEM_ENFORCED = 7; 207 private static int toLegacyStreamType(AudioAttributes aa) { 208 // flags to stream type mapping 209 if ((aa.getFlags() & AudioAttributes.FLAG_AUDIBILITY_ENFORCED) 210 == AudioAttributes.FLAG_AUDIBILITY_ENFORCED) { 211 return STREAM_SYSTEM_ENFORCED; 212 } 213 if ((aa.getFlags() & FLAG_SCO) == FLAG_SCO) { 214 return STREAM_BLUETOOTH_SCO; 215 } 216 217 // usage to stream type mapping 218 switch (aa.getUsage()) { 219 case AudioAttributes.USAGE_MEDIA: 220 case AudioAttributes.USAGE_GAME: 221 case AudioAttributes.USAGE_ASSISTANCE_ACCESSIBILITY: 222 case AudioAttributes.USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: 223 return AudioManager.STREAM_MUSIC; 224 case AudioAttributes.USAGE_ASSISTANCE_SONIFICATION: 225 return AudioManager.STREAM_SYSTEM; 226 case AudioAttributes.USAGE_VOICE_COMMUNICATION: 227 return AudioManager.STREAM_VOICE_CALL; 228 case AudioAttributes.USAGE_VOICE_COMMUNICATION_SIGNALLING: 229 return AudioManager.STREAM_DTMF; 230 case AudioAttributes.USAGE_ALARM: 231 return AudioManager.STREAM_ALARM; 232 case AudioAttributes.USAGE_NOTIFICATION_RINGTONE: 233 return AudioManager.STREAM_RING; 234 case AudioAttributes.USAGE_NOTIFICATION: 235 case AudioAttributes.USAGE_NOTIFICATION_COMMUNICATION_REQUEST: 236 case AudioAttributes.USAGE_NOTIFICATION_COMMUNICATION_INSTANT: 237 case AudioAttributes.USAGE_NOTIFICATION_COMMUNICATION_DELAYED: 238 case AudioAttributes.USAGE_NOTIFICATION_EVENT: 239 return AudioManager.STREAM_NOTIFICATION; 240 case AudioAttributes.USAGE_UNKNOWN: 241 default: 242 return AudioManager.STREAM_MUSIC; 243 } 244 } 245 } 246 247 public static interface Callback { 248 public void onSessionDestroyed(); 249 public void onSessionEvent(String event, Bundle extras); 250 public void onPlaybackStateChanged(Object stateObj); 251 public void onMetadataChanged(Object metadataObj); 252 } 253 254 static class CallbackProxy<T extends Callback> extends MediaController.Callback { 255 protected final T mCallback; 256 257 public CallbackProxy(T callback) { 258 mCallback = callback; 259 } 260 261 @Override 262 public void onSessionDestroyed() { 263 mCallback.onSessionDestroyed(); 264 } 265 266 @Override 267 public void onSessionEvent(String event, Bundle extras) { 268 mCallback.onSessionEvent(event, extras); 269 } 270 271 @Override 272 public void onPlaybackStateChanged(PlaybackState state) { 273 mCallback.onPlaybackStateChanged(state); 274 } 275 276 @Override 277 public void onMetadataChanged(MediaMetadata metadata) { 278 mCallback.onMetadataChanged(metadata); 279 } 280 } 281} 282