MediaPlayer.java revision d2506a506303ed94fd1991cf986b825b870a67c5
1/* 2 * Copyright (C) 2006 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.media; 18 19import android.content.BroadcastReceiver; 20import android.content.ContentResolver; 21import android.content.Context; 22import android.content.Intent; 23import android.content.IntentFilter; 24import android.content.res.AssetFileDescriptor; 25import android.net.Proxy; 26import android.net.ProxyProperties; 27import android.net.Uri; 28import android.os.Handler; 29import android.os.HandlerThread; 30import android.os.IBinder; 31import android.os.Looper; 32import android.os.Message; 33import android.os.Parcel; 34import android.os.Parcelable; 35import android.os.Process; 36import android.os.PowerManager; 37import android.util.Log; 38import android.view.Surface; 39import android.view.SurfaceHolder; 40import android.graphics.SurfaceTexture; 41import android.media.AudioManager; 42import android.media.MediaFormat; 43import android.media.MediaTimeProvider; 44import android.media.SubtitleController; 45import android.media.SubtitleData; 46 47import java.io.File; 48import java.io.FileDescriptor; 49import java.io.FileInputStream; 50import java.io.IOException; 51import java.io.InputStream; 52import java.lang.Runnable; 53import java.net.InetSocketAddress; 54import java.util.Map; 55import java.util.Scanner; 56import java.util.Set; 57import java.util.Vector; 58import java.lang.ref.WeakReference; 59 60/** 61 * MediaPlayer class can be used to control playback 62 * of audio/video files and streams. An example on how to use the methods in 63 * this class can be found in {@link android.widget.VideoView}. 64 * 65 * <p>Topics covered here are: 66 * <ol> 67 * <li><a href="#StateDiagram">State Diagram</a> 68 * <li><a href="#Valid_and_Invalid_States">Valid and Invalid States</a> 69 * <li><a href="#Permissions">Permissions</a> 70 * <li><a href="#Callbacks">Register informational and error callbacks</a> 71 * </ol> 72 * 73 * <div class="special reference"> 74 * <h3>Developer Guides</h3> 75 * <p>For more information about how to use MediaPlayer, read the 76 * <a href="{@docRoot}guide/topics/media/mediaplayer.html">Media Playback</a> developer guide.</p> 77 * </div> 78 * 79 * <a name="StateDiagram"></a> 80 * <h3>State Diagram</h3> 81 * 82 * <p>Playback control of audio/video files and streams is managed as a state 83 * machine. The following diagram shows the life cycle and the states of a 84 * MediaPlayer object driven by the supported playback control operations. 85 * The ovals represent the states a MediaPlayer object may reside 86 * in. The arcs represent the playback control operations that drive the object 87 * state transition. There are two types of arcs. The arcs with a single arrow 88 * head represent synchronous method calls, while those with 89 * a double arrow head represent asynchronous method calls.</p> 90 * 91 * <p><img src="../../../images/mediaplayer_state_diagram.gif" 92 * alt="MediaPlayer State diagram" 93 * border="0" /></p> 94 * 95 * <p>From this state diagram, one can see that a MediaPlayer object has the 96 * following states:</p> 97 * <ul> 98 * <li>When a MediaPlayer object is just created using <code>new</code> or 99 * after {@link #reset()} is called, it is in the <em>Idle</em> state; and after 100 * {@link #release()} is called, it is in the <em>End</em> state. Between these 101 * two states is the life cycle of the MediaPlayer object. 102 * <ul> 103 * <li>There is a subtle but important difference between a newly constructed 104 * MediaPlayer object and the MediaPlayer object after {@link #reset()} 105 * is called. It is a programming error to invoke methods such 106 * as {@link #getCurrentPosition()}, 107 * {@link #getDuration()}, {@link #getVideoHeight()}, 108 * {@link #getVideoWidth()}, {@link #setAudioStreamType(int)}, 109 * {@link #setLooping(boolean)}, 110 * {@link #setVolume(float, float)}, {@link #pause()}, {@link #start()}, 111 * {@link #stop()}, {@link #seekTo(int)}, {@link #prepare()} or 112 * {@link #prepareAsync()} in the <em>Idle</em> state for both cases. If any of these 113 * methods is called right after a MediaPlayer object is constructed, 114 * the user supplied callback method OnErrorListener.onError() won't be 115 * called by the internal player engine and the object state remains 116 * unchanged; but if these methods are called right after {@link #reset()}, 117 * the user supplied callback method OnErrorListener.onError() will be 118 * invoked by the internal player engine and the object will be 119 * transfered to the <em>Error</em> state. </li> 120 * <li>It is also recommended that once 121 * a MediaPlayer object is no longer being used, call {@link #release()} immediately 122 * so that resources used by the internal player engine associated with the 123 * MediaPlayer object can be released immediately. Resource may include 124 * singleton resources such as hardware acceleration components and 125 * failure to call {@link #release()} may cause subsequent instances of 126 * MediaPlayer objects to fallback to software implementations or fail 127 * altogether. Once the MediaPlayer 128 * object is in the <em>End</em> state, it can no longer be used and 129 * there is no way to bring it back to any other state. </li> 130 * <li>Furthermore, 131 * the MediaPlayer objects created using <code>new</code> is in the 132 * <em>Idle</em> state, while those created with one 133 * of the overloaded convenient <code>create</code> methods are <em>NOT</em> 134 * in the <em>Idle</em> state. In fact, the objects are in the <em>Prepared</em> 135 * state if the creation using <code>create</code> method is successful. 136 * </li> 137 * </ul> 138 * </li> 139 * <li>In general, some playback control operation may fail due to various 140 * reasons, such as unsupported audio/video format, poorly interleaved 141 * audio/video, resolution too high, streaming timeout, and the like. 142 * Thus, error reporting and recovery is an important concern under 143 * these circumstances. Sometimes, due to programming errors, invoking a playback 144 * control operation in an invalid state may also occur. Under all these 145 * error conditions, the internal player engine invokes a user supplied 146 * OnErrorListener.onError() method if an OnErrorListener has been 147 * registered beforehand via 148 * {@link #setOnErrorListener(android.media.MediaPlayer.OnErrorListener)}. 149 * <ul> 150 * <li>It is important to note that once an error occurs, the 151 * MediaPlayer object enters the <em>Error</em> state (except as noted 152 * above), even if an error listener has not been registered by the application.</li> 153 * <li>In order to reuse a MediaPlayer object that is in the <em> 154 * Error</em> state and recover from the error, 155 * {@link #reset()} can be called to restore the object to its <em>Idle</em> 156 * state.</li> 157 * <li>It is good programming practice to have your application 158 * register a OnErrorListener to look out for error notifications from 159 * the internal player engine.</li> 160 * <li>IllegalStateException is 161 * thrown to prevent programming errors such as calling {@link #prepare()}, 162 * {@link #prepareAsync()}, or one of the overloaded <code>setDataSource 163 * </code> methods in an invalid state. </li> 164 * </ul> 165 * </li> 166 * <li>Calling 167 * {@link #setDataSource(FileDescriptor)}, or 168 * {@link #setDataSource(String)}, or 169 * {@link #setDataSource(Context, Uri)}, or 170 * {@link #setDataSource(FileDescriptor, long, long)} transfers a 171 * MediaPlayer object in the <em>Idle</em> state to the 172 * <em>Initialized</em> state. 173 * <ul> 174 * <li>An IllegalStateException is thrown if 175 * setDataSource() is called in any other state.</li> 176 * <li>It is good programming 177 * practice to always look out for <code>IllegalArgumentException</code> 178 * and <code>IOException</code> that may be thrown from the overloaded 179 * <code>setDataSource</code> methods.</li> 180 * </ul> 181 * </li> 182 * <li>A MediaPlayer object must first enter the <em>Prepared</em> state 183 * before playback can be started. 184 * <ul> 185 * <li>There are two ways (synchronous vs. 186 * asynchronous) that the <em>Prepared</em> state can be reached: 187 * either a call to {@link #prepare()} (synchronous) which 188 * transfers the object to the <em>Prepared</em> state once the method call 189 * returns, or a call to {@link #prepareAsync()} (asynchronous) which 190 * first transfers the object to the <em>Preparing</em> state after the 191 * call returns (which occurs almost right way) while the internal 192 * player engine continues working on the rest of preparation work 193 * until the preparation work completes. When the preparation completes or when {@link #prepare()} call returns, 194 * the internal player engine then calls a user supplied callback method, 195 * onPrepared() of the OnPreparedListener interface, if an 196 * OnPreparedListener is registered beforehand via {@link 197 * #setOnPreparedListener(android.media.MediaPlayer.OnPreparedListener)}.</li> 198 * <li>It is important to note that 199 * the <em>Preparing</em> state is a transient state, and the behavior 200 * of calling any method with side effect while a MediaPlayer object is 201 * in the <em>Preparing</em> state is undefined.</li> 202 * <li>An IllegalStateException is 203 * thrown if {@link #prepare()} or {@link #prepareAsync()} is called in 204 * any other state.</li> 205 * <li>While in the <em>Prepared</em> state, properties 206 * such as audio/sound volume, screenOnWhilePlaying, looping can be 207 * adjusted by invoking the corresponding set methods.</li> 208 * </ul> 209 * </li> 210 * <li>To start the playback, {@link #start()} must be called. After 211 * {@link #start()} returns successfully, the MediaPlayer object is in the 212 * <em>Started</em> state. {@link #isPlaying()} can be called to test 213 * whether the MediaPlayer object is in the <em>Started</em> state. 214 * <ul> 215 * <li>While in the <em>Started</em> state, the internal player engine calls 216 * a user supplied OnBufferingUpdateListener.onBufferingUpdate() callback 217 * method if a OnBufferingUpdateListener has been registered beforehand 218 * via {@link #setOnBufferingUpdateListener(OnBufferingUpdateListener)}. 219 * This callback allows applications to keep track of the buffering status 220 * while streaming audio/video.</li> 221 * <li>Calling {@link #start()} has not effect 222 * on a MediaPlayer object that is already in the <em>Started</em> state.</li> 223 * </ul> 224 * </li> 225 * <li>Playback can be paused and stopped, and the current playback position 226 * can be adjusted. Playback can be paused via {@link #pause()}. When the call to 227 * {@link #pause()} returns, the MediaPlayer object enters the 228 * <em>Paused</em> state. Note that the transition from the <em>Started</em> 229 * state to the <em>Paused</em> state and vice versa happens 230 * asynchronously in the player engine. It may take some time before 231 * the state is updated in calls to {@link #isPlaying()}, and it can be 232 * a number of seconds in the case of streamed content. 233 * <ul> 234 * <li>Calling {@link #start()} to resume playback for a paused 235 * MediaPlayer object, and the resumed playback 236 * position is the same as where it was paused. When the call to 237 * {@link #start()} returns, the paused MediaPlayer object goes back to 238 * the <em>Started</em> state.</li> 239 * <li>Calling {@link #pause()} has no effect on 240 * a MediaPlayer object that is already in the <em>Paused</em> state.</li> 241 * </ul> 242 * </li> 243 * <li>Calling {@link #stop()} stops playback and causes a 244 * MediaPlayer in the <em>Started</em>, <em>Paused</em>, <em>Prepared 245 * </em> or <em>PlaybackCompleted</em> state to enter the 246 * <em>Stopped</em> state. 247 * <ul> 248 * <li>Once in the <em>Stopped</em> state, playback cannot be started 249 * until {@link #prepare()} or {@link #prepareAsync()} are called to set 250 * the MediaPlayer object to the <em>Prepared</em> state again.</li> 251 * <li>Calling {@link #stop()} has no effect on a MediaPlayer 252 * object that is already in the <em>Stopped</em> state.</li> 253 * </ul> 254 * </li> 255 * <li>The playback position can be adjusted with a call to 256 * {@link #seekTo(int)}. 257 * <ul> 258 * <li>Although the asynchronuous {@link #seekTo(int)} 259 * call returns right way, the actual seek operation may take a while to 260 * finish, especially for audio/video being streamed. When the actual 261 * seek operation completes, the internal player engine calls a user 262 * supplied OnSeekComplete.onSeekComplete() if an OnSeekCompleteListener 263 * has been registered beforehand via 264 * {@link #setOnSeekCompleteListener(OnSeekCompleteListener)}.</li> 265 * <li>Please 266 * note that {@link #seekTo(int)} can also be called in the other states, 267 * such as <em>Prepared</em>, <em>Paused</em> and <em>PlaybackCompleted 268 * </em> state.</li> 269 * <li>Furthermore, the actual current playback position 270 * can be retrieved with a call to {@link #getCurrentPosition()}, which 271 * is helpful for applications such as a Music player that need to keep 272 * track of the playback progress.</li> 273 * </ul> 274 * </li> 275 * <li>When the playback reaches the end of stream, the playback completes. 276 * <ul> 277 * <li>If the looping mode was being set to <var>true</var>with 278 * {@link #setLooping(boolean)}, the MediaPlayer object shall remain in 279 * the <em>Started</em> state.</li> 280 * <li>If the looping mode was set to <var>false 281 * </var>, the player engine calls a user supplied callback method, 282 * OnCompletion.onCompletion(), if a OnCompletionListener is registered 283 * beforehand via {@link #setOnCompletionListener(OnCompletionListener)}. 284 * The invoke of the callback signals that the object is now in the <em> 285 * PlaybackCompleted</em> state.</li> 286 * <li>While in the <em>PlaybackCompleted</em> 287 * state, calling {@link #start()} can restart the playback from the 288 * beginning of the audio/video source.</li> 289 * </ul> 290 * 291 * 292 * <a name="Valid_and_Invalid_States"></a> 293 * <h3>Valid and invalid states</h3> 294 * 295 * <table border="0" cellspacing="0" cellpadding="0"> 296 * <tr><td>Method Name </p></td> 297 * <td>Valid Sates </p></td> 298 * <td>Invalid States </p></td> 299 * <td>Comments </p></td></tr> 300 * <tr><td>attachAuxEffect </p></td> 301 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted} </p></td> 302 * <td>{Idle, Error} </p></td> 303 * <td>This method must be called after setDataSource. 304 * Calling it does not change the object state. </p></td></tr> 305 * <tr><td>getAudioSessionId </p></td> 306 * <td>any </p></td> 307 * <td>{} </p></td> 308 * <td>This method can be called in any state and calling it does not change 309 * the object state. </p></td></tr> 310 * <tr><td>getCurrentPosition </p></td> 311 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 312 * PlaybackCompleted} </p></td> 313 * <td>{Error}</p></td> 314 * <td>Successful invoke of this method in a valid state does not change the 315 * state. Calling this method in an invalid state transfers the object 316 * to the <em>Error</em> state. </p></td></tr> 317 * <tr><td>getDuration </p></td> 318 * <td>{Prepared, Started, Paused, Stopped, PlaybackCompleted} </p></td> 319 * <td>{Idle, Initialized, Error} </p></td> 320 * <td>Successful invoke of this method in a valid state does not change the 321 * state. Calling this method in an invalid state transfers the object 322 * to the <em>Error</em> state. </p></td></tr> 323 * <tr><td>getVideoHeight </p></td> 324 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 325 * PlaybackCompleted}</p></td> 326 * <td>{Error}</p></td> 327 * <td>Successful invoke of this method in a valid state does not change the 328 * state. Calling this method in an invalid state transfers the object 329 * to the <em>Error</em> state. </p></td></tr> 330 * <tr><td>getVideoWidth </p></td> 331 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 332 * PlaybackCompleted}</p></td> 333 * <td>{Error}</p></td> 334 * <td>Successful invoke of this method in a valid state does not change 335 * the state. Calling this method in an invalid state transfers the 336 * object to the <em>Error</em> state. </p></td></tr> 337 * <tr><td>isPlaying </p></td> 338 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 339 * PlaybackCompleted}</p></td> 340 * <td>{Error}</p></td> 341 * <td>Successful invoke of this method in a valid state does not change 342 * the state. Calling this method in an invalid state transfers the 343 * object to the <em>Error</em> state. </p></td></tr> 344 * <tr><td>pause </p></td> 345 * <td>{Started, Paused, PlaybackCompleted}</p></td> 346 * <td>{Idle, Initialized, Prepared, Stopped, Error}</p></td> 347 * <td>Successful invoke of this method in a valid state transfers the 348 * object to the <em>Paused</em> state. Calling this method in an 349 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 350 * <tr><td>prepare </p></td> 351 * <td>{Initialized, Stopped} </p></td> 352 * <td>{Idle, Prepared, Started, Paused, PlaybackCompleted, Error} </p></td> 353 * <td>Successful invoke of this method in a valid state transfers the 354 * object to the <em>Prepared</em> state. Calling this method in an 355 * invalid state throws an IllegalStateException.</p></td></tr> 356 * <tr><td>prepareAsync </p></td> 357 * <td>{Initialized, Stopped} </p></td> 358 * <td>{Idle, Prepared, Started, Paused, PlaybackCompleted, Error} </p></td> 359 * <td>Successful invoke of this method in a valid state transfers the 360 * object to the <em>Preparing</em> state. Calling this method in an 361 * invalid state throws an IllegalStateException.</p></td></tr> 362 * <tr><td>release </p></td> 363 * <td>any </p></td> 364 * <td>{} </p></td> 365 * <td>After {@link #release()}, the object is no longer available. </p></td></tr> 366 * <tr><td>reset </p></td> 367 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 368 * PlaybackCompleted, Error}</p></td> 369 * <td>{}</p></td> 370 * <td>After {@link #reset()}, the object is like being just created.</p></td></tr> 371 * <tr><td>seekTo </p></td> 372 * <td>{Prepared, Started, Paused, PlaybackCompleted} </p></td> 373 * <td>{Idle, Initialized, Stopped, Error}</p></td> 374 * <td>Successful invoke of this method in a valid state does not change 375 * the state. Calling this method in an invalid state transfers the 376 * object to the <em>Error</em> state. </p></td></tr> 377 * <tr><td>setAudioSessionId </p></td> 378 * <td>{Idle} </p></td> 379 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted, 380 * Error} </p></td> 381 * <td>This method must be called in idle state as the audio session ID must be known before 382 * calling setDataSource. Calling it does not change the object state. </p></td></tr> 383 * <tr><td>setAudioStreamType </p></td> 384 * <td>{Idle, Initialized, Stopped, Prepared, Started, Paused, 385 * PlaybackCompleted}</p></td> 386 * <td>{Error}</p></td> 387 * <td>Successful invoke of this method does not change the state. In order for the 388 * target audio stream type to become effective, this method must be called before 389 * prepare() or prepareAsync().</p></td></tr> 390 * <tr><td>setAuxEffectSendLevel </p></td> 391 * <td>any</p></td> 392 * <td>{} </p></td> 393 * <td>Calling this method does not change the object state. </p></td></tr> 394 * <tr><td>setDataSource </p></td> 395 * <td>{Idle} </p></td> 396 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted, 397 * Error} </p></td> 398 * <td>Successful invoke of this method in a valid state transfers the 399 * object to the <em>Initialized</em> state. Calling this method in an 400 * invalid state throws an IllegalStateException.</p></td></tr> 401 * <tr><td>setDisplay </p></td> 402 * <td>any </p></td> 403 * <td>{} </p></td> 404 * <td>This method can be called in any state and calling it does not change 405 * the object state. </p></td></tr> 406 * <tr><td>setSurface </p></td> 407 * <td>any </p></td> 408 * <td>{} </p></td> 409 * <td>This method can be called in any state and calling it does not change 410 * the object state. </p></td></tr> 411 * <tr><td>setVideoScalingMode </p></td> 412 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted} </p></td> 413 * <td>{Idle, Error}</p></td> 414 * <td>Successful invoke of this method does not change the state.</p></td></tr> 415 * <tr><td>setLooping </p></td> 416 * <td>{Idle, Initialized, Stopped, Prepared, Started, Paused, 417 * PlaybackCompleted}</p></td> 418 * <td>{Error}</p></td> 419 * <td>Successful invoke of this method in a valid state does not change 420 * the state. Calling this method in an 421 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 422 * <tr><td>isLooping </p></td> 423 * <td>any </p></td> 424 * <td>{} </p></td> 425 * <td>This method can be called in any state and calling it does not change 426 * the object state. </p></td></tr> 427 * <tr><td>setOnBufferingUpdateListener </p></td> 428 * <td>any </p></td> 429 * <td>{} </p></td> 430 * <td>This method can be called in any state and calling it does not change 431 * the object state. </p></td></tr> 432 * <tr><td>setOnCompletionListener </p></td> 433 * <td>any </p></td> 434 * <td>{} </p></td> 435 * <td>This method can be called in any state and calling it does not change 436 * the object state. </p></td></tr> 437 * <tr><td>setOnErrorListener </p></td> 438 * <td>any </p></td> 439 * <td>{} </p></td> 440 * <td>This method can be called in any state and calling it does not change 441 * the object state. </p></td></tr> 442 * <tr><td>setOnPreparedListener </p></td> 443 * <td>any </p></td> 444 * <td>{} </p></td> 445 * <td>This method can be called in any state and calling it does not change 446 * the object state. </p></td></tr> 447 * <tr><td>setOnSeekCompleteListener </p></td> 448 * <td>any </p></td> 449 * <td>{} </p></td> 450 * <td>This method can be called in any state and calling it does not change 451 * the object state. </p></td></tr> 452 * <tr><td>setScreenOnWhilePlaying</></td> 453 * <td>any </p></td> 454 * <td>{} </p></td> 455 * <td>This method can be called in any state and calling it does not change 456 * the object state. </p></td></tr> 457 * <tr><td>setVolume </p></td> 458 * <td>{Idle, Initialized, Stopped, Prepared, Started, Paused, 459 * PlaybackCompleted}</p></td> 460 * <td>{Error}</p></td> 461 * <td>Successful invoke of this method does not change the state. 462 * <tr><td>setWakeMode </p></td> 463 * <td>any </p></td> 464 * <td>{} </p></td> 465 * <td>This method can be called in any state and calling it does not change 466 * the object state.</p></td></tr> 467 * <tr><td>start </p></td> 468 * <td>{Prepared, Started, Paused, PlaybackCompleted}</p></td> 469 * <td>{Idle, Initialized, Stopped, Error}</p></td> 470 * <td>Successful invoke of this method in a valid state transfers the 471 * object to the <em>Started</em> state. Calling this method in an 472 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 473 * <tr><td>stop </p></td> 474 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 475 * <td>{Idle, Initialized, Error}</p></td> 476 * <td>Successful invoke of this method in a valid state transfers the 477 * object to the <em>Stopped</em> state. Calling this method in an 478 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 479 * <tr><td>getTrackInfo </p></td> 480 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 481 * <td>{Idle, Initialized, Error}</p></td> 482 * <td>Successful invoke of this method does not change the state.</p></td></tr> 483 * <tr><td>addTimedTextSource </p></td> 484 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 485 * <td>{Idle, Initialized, Error}</p></td> 486 * <td>Successful invoke of this method does not change the state.</p></td></tr> 487 * <tr><td>selectTrack </p></td> 488 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 489 * <td>{Idle, Initialized, Error}</p></td> 490 * <td>Successful invoke of this method does not change the state.</p></td></tr> 491 * <tr><td>deselectTrack </p></td> 492 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 493 * <td>{Idle, Initialized, Error}</p></td> 494 * <td>Successful invoke of this method does not change the state.</p></td></tr> 495 * 496 * </table> 497 * 498 * <a name="Permissions"></a> 499 * <h3>Permissions</h3> 500 * <p>One may need to declare a corresponding WAKE_LOCK permission {@link 501 * android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 502 * element. 503 * 504 * <p>This class requires the {@link android.Manifest.permission#INTERNET} permission 505 * when used with network-based content. 506 * 507 * <a name="Callbacks"></a> 508 * <h3>Callbacks</h3> 509 * <p>Applications may want to register for informational and error 510 * events in order to be informed of some internal state update and 511 * possible runtime errors during playback or streaming. Registration for 512 * these events is done by properly setting the appropriate listeners (via calls 513 * to 514 * {@link #setOnPreparedListener(OnPreparedListener)}setOnPreparedListener, 515 * {@link #setOnVideoSizeChangedListener(OnVideoSizeChangedListener)}setOnVideoSizeChangedListener, 516 * {@link #setOnSeekCompleteListener(OnSeekCompleteListener)}setOnSeekCompleteListener, 517 * {@link #setOnCompletionListener(OnCompletionListener)}setOnCompletionListener, 518 * {@link #setOnBufferingUpdateListener(OnBufferingUpdateListener)}setOnBufferingUpdateListener, 519 * {@link #setOnInfoListener(OnInfoListener)}setOnInfoListener, 520 * {@link #setOnErrorListener(OnErrorListener)}setOnErrorListener, etc). 521 * In order to receive the respective callback 522 * associated with these listeners, applications are required to create 523 * MediaPlayer objects on a thread with its own Looper running (main UI 524 * thread by default has a Looper running). 525 * 526 */ 527public class MediaPlayer implements SubtitleController.Listener 528{ 529 /** 530 Constant to retrieve only the new metadata since the last 531 call. 532 // FIXME: unhide. 533 // FIXME: add link to getMetadata(boolean, boolean) 534 {@hide} 535 */ 536 public static final boolean METADATA_UPDATE_ONLY = true; 537 538 /** 539 Constant to retrieve all the metadata. 540 // FIXME: unhide. 541 // FIXME: add link to getMetadata(boolean, boolean) 542 {@hide} 543 */ 544 public static final boolean METADATA_ALL = false; 545 546 /** 547 Constant to enable the metadata filter during retrieval. 548 // FIXME: unhide. 549 // FIXME: add link to getMetadata(boolean, boolean) 550 {@hide} 551 */ 552 public static final boolean APPLY_METADATA_FILTER = true; 553 554 /** 555 Constant to disable the metadata filter during retrieval. 556 // FIXME: unhide. 557 // FIXME: add link to getMetadata(boolean, boolean) 558 {@hide} 559 */ 560 public static final boolean BYPASS_METADATA_FILTER = false; 561 562 static { 563 System.loadLibrary("media_jni"); 564 native_init(); 565 } 566 567 private final static String TAG = "MediaPlayer"; 568 // Name of the remote interface for the media player. Must be kept 569 // in sync with the 2nd parameter of the IMPLEMENT_META_INTERFACE 570 // macro invocation in IMediaPlayer.cpp 571 private final static String IMEDIA_PLAYER = "android.media.IMediaPlayer"; 572 573 private long mNativeContext; // accessed by native methods 574 private long mNativeSurfaceTexture; // accessed by native methods 575 private int mListenerContext; // accessed by native methods 576 private SurfaceHolder mSurfaceHolder; 577 private EventHandler mEventHandler; 578 private PowerManager.WakeLock mWakeLock = null; 579 private boolean mScreenOnWhilePlaying; 580 private boolean mStayAwake; 581 582 /** 583 * Default constructor. Consider using one of the create() methods for 584 * synchronously instantiating a MediaPlayer from a Uri or resource. 585 * <p>When done with the MediaPlayer, you should call {@link #release()}, 586 * to free the resources. If not released, too many MediaPlayer instances may 587 * result in an exception.</p> 588 */ 589 public MediaPlayer() { 590 591 Looper looper; 592 if ((looper = Looper.myLooper()) != null) { 593 mEventHandler = new EventHandler(this, looper); 594 } else if ((looper = Looper.getMainLooper()) != null) { 595 mEventHandler = new EventHandler(this, looper); 596 } else { 597 mEventHandler = null; 598 } 599 600 mTimeProvider = new TimeProvider(this); 601 mOutOfBandSubtitleTracks = new Vector<SubtitleTrack>(); 602 mOpenSubtitleSources = new Vector<InputStream>(); 603 mInbandSubtitleTracks = new SubtitleTrack[0]; 604 605 /* Native setup requires a weak reference to our object. 606 * It's easier to create it here than in C++. 607 */ 608 native_setup(new WeakReference<MediaPlayer>(this)); 609 } 610 611 /* 612 * Update the MediaPlayer SurfaceTexture. 613 * Call after setting a new display surface. 614 */ 615 private native void _setVideoSurface(Surface surface); 616 617 /* Do not change these values (starting with INVOKE_ID) without updating 618 * their counterparts in include/media/mediaplayer.h! 619 */ 620 private static final int INVOKE_ID_GET_TRACK_INFO = 1; 621 private static final int INVOKE_ID_ADD_EXTERNAL_SOURCE = 2; 622 private static final int INVOKE_ID_ADD_EXTERNAL_SOURCE_FD = 3; 623 private static final int INVOKE_ID_SELECT_TRACK = 4; 624 private static final int INVOKE_ID_DESELECT_TRACK = 5; 625 private static final int INVOKE_ID_SET_VIDEO_SCALE_MODE = 6; 626 627 /** 628 * Create a request parcel which can be routed to the native media 629 * player using {@link #invoke(Parcel, Parcel)}. The Parcel 630 * returned has the proper InterfaceToken set. The caller should 631 * not overwrite that token, i.e it can only append data to the 632 * Parcel. 633 * 634 * @return A parcel suitable to hold a request for the native 635 * player. 636 * {@hide} 637 */ 638 public Parcel newRequest() { 639 Parcel parcel = Parcel.obtain(); 640 parcel.writeInterfaceToken(IMEDIA_PLAYER); 641 return parcel; 642 } 643 644 /** 645 * Invoke a generic method on the native player using opaque 646 * parcels for the request and reply. Both payloads' format is a 647 * convention between the java caller and the native player. 648 * Must be called after setDataSource to make sure a native player 649 * exists. On failure, a RuntimeException is thrown. 650 * 651 * @param request Parcel with the data for the extension. The 652 * caller must use {@link #newRequest()} to get one. 653 * 654 * @param reply Output parcel with the data returned by the 655 * native player. 656 * {@hide} 657 */ 658 public void invoke(Parcel request, Parcel reply) { 659 int retcode = native_invoke(request, reply); 660 reply.setDataPosition(0); 661 if (retcode != 0) { 662 throw new RuntimeException("failure code: " + retcode); 663 } 664 } 665 666 /** 667 * Sets the {@link SurfaceHolder} to use for displaying the video 668 * portion of the media. 669 * 670 * Either a surface holder or surface must be set if a display or video sink 671 * is needed. Not calling this method or {@link #setSurface(Surface)} 672 * when playing back a video will result in only the audio track being played. 673 * A null surface holder or surface will result in only the audio track being 674 * played. 675 * 676 * @param sh the SurfaceHolder to use for video display 677 */ 678 public void setDisplay(SurfaceHolder sh) { 679 mSurfaceHolder = sh; 680 Surface surface; 681 if (sh != null) { 682 surface = sh.getSurface(); 683 } else { 684 surface = null; 685 } 686 _setVideoSurface(surface); 687 updateSurfaceScreenOn(); 688 } 689 690 /** 691 * Sets the {@link Surface} to be used as the sink for the video portion of 692 * the media. This is similar to {@link #setDisplay(SurfaceHolder)}, but 693 * does not support {@link #setScreenOnWhilePlaying(boolean)}. Setting a 694 * Surface will un-set any Surface or SurfaceHolder that was previously set. 695 * A null surface will result in only the audio track being played. 696 * 697 * If the Surface sends frames to a {@link SurfaceTexture}, the timestamps 698 * returned from {@link SurfaceTexture#getTimestamp()} will have an 699 * unspecified zero point. These timestamps cannot be directly compared 700 * between different media sources, different instances of the same media 701 * source, or multiple runs of the same program. The timestamp is normally 702 * monotonically increasing and is unaffected by time-of-day adjustments, 703 * but it is reset when the position is set. 704 * 705 * @param surface The {@link Surface} to be used for the video portion of 706 * the media. 707 */ 708 public void setSurface(Surface surface) { 709 if (mScreenOnWhilePlaying && surface != null) { 710 Log.w(TAG, "setScreenOnWhilePlaying(true) is ineffective for Surface"); 711 } 712 mSurfaceHolder = null; 713 _setVideoSurface(surface); 714 updateSurfaceScreenOn(); 715 } 716 717 /* Do not change these video scaling mode values below without updating 718 * their counterparts in system/window.h! Please do not forget to update 719 * {@link #isVideoScalingModeSupported} when new video scaling modes 720 * are added. 721 */ 722 /** 723 * Specifies a video scaling mode. The content is stretched to the 724 * surface rendering area. When the surface has the same aspect ratio 725 * as the content, the aspect ratio of the content is maintained; 726 * otherwise, the aspect ratio of the content is not maintained when video 727 * is being rendered. Unlike {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING}, 728 * there is no content cropping with this video scaling mode. 729 */ 730 public static final int VIDEO_SCALING_MODE_SCALE_TO_FIT = 1; 731 732 /** 733 * Specifies a video scaling mode. The content is scaled, maintaining 734 * its aspect ratio. The whole surface area is always used. When the 735 * aspect ratio of the content is the same as the surface, no content 736 * is cropped; otherwise, content is cropped to fit the surface. 737 */ 738 public static final int VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING = 2; 739 /** 740 * Sets video scaling mode. To make the target video scaling mode 741 * effective during playback, this method must be called after 742 * data source is set. If not called, the default video 743 * scaling mode is {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT}. 744 * 745 * <p> The supported video scaling modes are: 746 * <ul> 747 * <li> {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT} 748 * <li> {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING} 749 * </ul> 750 * 751 * @param mode target video scaling mode. Most be one of the supported 752 * video scaling modes; otherwise, IllegalArgumentException will be thrown. 753 * 754 * @see MediaPlayer#VIDEO_SCALING_MODE_SCALE_TO_FIT 755 * @see MediaPlayer#VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING 756 */ 757 public void setVideoScalingMode(int mode) { 758 if (!isVideoScalingModeSupported(mode)) { 759 final String msg = "Scaling mode " + mode + " is not supported"; 760 throw new IllegalArgumentException(msg); 761 } 762 Parcel request = Parcel.obtain(); 763 Parcel reply = Parcel.obtain(); 764 try { 765 request.writeInterfaceToken(IMEDIA_PLAYER); 766 request.writeInt(INVOKE_ID_SET_VIDEO_SCALE_MODE); 767 request.writeInt(mode); 768 invoke(request, reply); 769 } finally { 770 request.recycle(); 771 reply.recycle(); 772 } 773 } 774 775 /** 776 * Convenience method to create a MediaPlayer for a given Uri. 777 * On success, {@link #prepare()} will already have been called and must not be called again. 778 * <p>When done with the MediaPlayer, you should call {@link #release()}, 779 * to free the resources. If not released, too many MediaPlayer instances will 780 * result in an exception.</p> 781 * 782 * @param context the Context to use 783 * @param uri the Uri from which to get the datasource 784 * @return a MediaPlayer object, or null if creation failed 785 */ 786 public static MediaPlayer create(Context context, Uri uri) { 787 return create (context, uri, null); 788 } 789 790 /** 791 * Convenience method to create a MediaPlayer for a given Uri. 792 * On success, {@link #prepare()} will already have been called and must not be called again. 793 * <p>When done with the MediaPlayer, you should call {@link #release()}, 794 * to free the resources. If not released, too many MediaPlayer instances will 795 * result in an exception.</p> 796 * 797 * @param context the Context to use 798 * @param uri the Uri from which to get the datasource 799 * @param holder the SurfaceHolder to use for displaying the video 800 * @return a MediaPlayer object, or null if creation failed 801 */ 802 public static MediaPlayer create(Context context, Uri uri, SurfaceHolder holder) { 803 804 try { 805 MediaPlayer mp = new MediaPlayer(); 806 mp.setDataSource(context, uri); 807 if (holder != null) { 808 mp.setDisplay(holder); 809 } 810 mp.prepare(); 811 return mp; 812 } catch (IOException ex) { 813 Log.d(TAG, "create failed:", ex); 814 // fall through 815 } catch (IllegalArgumentException ex) { 816 Log.d(TAG, "create failed:", ex); 817 // fall through 818 } catch (SecurityException ex) { 819 Log.d(TAG, "create failed:", ex); 820 // fall through 821 } 822 823 return null; 824 } 825 826 // Note no convenience method to create a MediaPlayer with SurfaceTexture sink. 827 828 /** 829 * Convenience method to create a MediaPlayer for a given resource id. 830 * On success, {@link #prepare()} will already have been called and must not be called again. 831 * <p>When done with the MediaPlayer, you should call {@link #release()}, 832 * to free the resources. If not released, too many MediaPlayer instances will 833 * result in an exception.</p> 834 * 835 * @param context the Context to use 836 * @param resid the raw resource id (<var>R.raw.<something></var>) for 837 * the resource to use as the datasource 838 * @return a MediaPlayer object, or null if creation failed 839 */ 840 public static MediaPlayer create(Context context, int resid) { 841 try { 842 AssetFileDescriptor afd = context.getResources().openRawResourceFd(resid); 843 if (afd == null) return null; 844 845 MediaPlayer mp = new MediaPlayer(); 846 mp.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength()); 847 afd.close(); 848 mp.prepare(); 849 return mp; 850 } catch (IOException ex) { 851 Log.d(TAG, "create failed:", ex); 852 // fall through 853 } catch (IllegalArgumentException ex) { 854 Log.d(TAG, "create failed:", ex); 855 // fall through 856 } catch (SecurityException ex) { 857 Log.d(TAG, "create failed:", ex); 858 // fall through 859 } 860 return null; 861 } 862 863 /** 864 * Sets the data source as a content Uri. 865 * 866 * @param context the Context to use when resolving the Uri 867 * @param uri the Content URI of the data you want to play 868 * @throws IllegalStateException if it is called in an invalid state 869 */ 870 public void setDataSource(Context context, Uri uri) 871 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 872 setDataSource(context, uri, null); 873 } 874 875 /** 876 * Sets the data source as a content Uri. 877 * 878 * @param context the Context to use when resolving the Uri 879 * @param uri the Content URI of the data you want to play 880 * @param headers the headers to be sent together with the request for the data 881 * @throws IllegalStateException if it is called in an invalid state 882 */ 883 public void setDataSource(Context context, Uri uri, Map<String, String> headers) 884 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 885 disableProxyListener(); 886 887 String scheme = uri.getScheme(); 888 if(scheme == null || scheme.equals("file")) { 889 setDataSource(uri.getPath()); 890 return; 891 } 892 893 AssetFileDescriptor fd = null; 894 try { 895 ContentResolver resolver = context.getContentResolver(); 896 fd = resolver.openAssetFileDescriptor(uri, "r"); 897 if (fd == null) { 898 return; 899 } 900 // Note: using getDeclaredLength so that our behavior is the same 901 // as previous versions when the content provider is returning 902 // a full file. 903 if (fd.getDeclaredLength() < 0) { 904 setDataSource(fd.getFileDescriptor()); 905 } else { 906 setDataSource(fd.getFileDescriptor(), fd.getStartOffset(), fd.getDeclaredLength()); 907 } 908 return; 909 } catch (SecurityException ex) { 910 } catch (IOException ex) { 911 } finally { 912 if (fd != null) { 913 fd.close(); 914 } 915 } 916 917 Log.d(TAG, "Couldn't open file on client side, trying server side"); 918 919 setDataSource(uri.toString(), headers); 920 921 if (scheme.equalsIgnoreCase("http") 922 || scheme.equalsIgnoreCase("https")) { 923 setupProxyListener(context); 924 } 925 } 926 927 /** 928 * Sets the data source (file-path or http/rtsp URL) to use. 929 * 930 * @param path the path of the file, or the http/rtsp URL of the stream you want to play 931 * @throws IllegalStateException if it is called in an invalid state 932 * 933 * <p>When <code>path</code> refers to a local file, the file may actually be opened by a 934 * process other than the calling application. This implies that the pathname 935 * should be an absolute path (as any other process runs with unspecified current working 936 * directory), and that the pathname should reference a world-readable file. 937 * As an alternative, the application could first open the file for reading, 938 * and then use the file descriptor form {@link #setDataSource(FileDescriptor)}. 939 */ 940 public void setDataSource(String path) 941 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 942 setDataSource(path, null, null); 943 } 944 945 /** 946 * Sets the data source (file-path or http/rtsp URL) to use. 947 * 948 * @param path the path of the file, or the http/rtsp URL of the stream you want to play 949 * @param headers the headers associated with the http request for the stream you want to play 950 * @throws IllegalStateException if it is called in an invalid state 951 * @hide pending API council 952 */ 953 public void setDataSource(String path, Map<String, String> headers) 954 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException 955 { 956 String[] keys = null; 957 String[] values = null; 958 959 if (headers != null) { 960 keys = new String[headers.size()]; 961 values = new String[headers.size()]; 962 963 int i = 0; 964 for (Map.Entry<String, String> entry: headers.entrySet()) { 965 keys[i] = entry.getKey(); 966 values[i] = entry.getValue(); 967 ++i; 968 } 969 } 970 setDataSource(path, keys, values); 971 } 972 973 private void setDataSource(String path, String[] keys, String[] values) 974 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 975 disableProxyListener(); 976 977 final Uri uri = Uri.parse(path); 978 if ("file".equals(uri.getScheme())) { 979 path = uri.getPath(); 980 } 981 982 final File file = new File(path); 983 if (file.exists()) { 984 FileInputStream is = new FileInputStream(file); 985 FileDescriptor fd = is.getFD(); 986 setDataSource(fd); 987 is.close(); 988 } else { 989 _setDataSource(path, keys, values); 990 } 991 } 992 993 private void _setDataSource( 994 String path, String[] keys, String[] values) 995 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 996 nativeSetDataSource( 997 MediaHTTPService.createHttpServiceBinderIfNecessary(path), 998 path, 999 keys, 1000 values); 1001 } 1002 1003 private native void nativeSetDataSource( 1004 IBinder httpServiceBinder, String path, String[] keys, String[] values) 1005 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException; 1006 1007 /** 1008 * Sets the data source (FileDescriptor) to use. It is the caller's responsibility 1009 * to close the file descriptor. It is safe to do so as soon as this call returns. 1010 * 1011 * @param fd the FileDescriptor for the file you want to play 1012 * @throws IllegalStateException if it is called in an invalid state 1013 */ 1014 public void setDataSource(FileDescriptor fd) 1015 throws IOException, IllegalArgumentException, IllegalStateException { 1016 // intentionally less than LONG_MAX 1017 setDataSource(fd, 0, 0x7ffffffffffffffL); 1018 } 1019 1020 /** 1021 * Sets the data source (FileDescriptor) to use. The FileDescriptor must be 1022 * seekable (N.B. a LocalSocket is not seekable). It is the caller's responsibility 1023 * to close the file descriptor. It is safe to do so as soon as this call returns. 1024 * 1025 * @param fd the FileDescriptor for the file you want to play 1026 * @param offset the offset into the file where the data to be played starts, in bytes 1027 * @param length the length in bytes of the data to be played 1028 * @throws IllegalStateException if it is called in an invalid state 1029 */ 1030 public void setDataSource(FileDescriptor fd, long offset, long length) 1031 throws IOException, IllegalArgumentException, IllegalStateException { 1032 disableProxyListener(); 1033 _setDataSource(fd, offset, length); 1034 } 1035 1036 private native void _setDataSource(FileDescriptor fd, long offset, long length) 1037 throws IOException, IllegalArgumentException, IllegalStateException; 1038 1039 /** 1040 * Prepares the player for playback, synchronously. 1041 * 1042 * After setting the datasource and the display surface, you need to either 1043 * call prepare() or prepareAsync(). For files, it is OK to call prepare(), 1044 * which blocks until MediaPlayer is ready for playback. 1045 * 1046 * @throws IllegalStateException if it is called in an invalid state 1047 */ 1048 public native void prepare() throws IOException, IllegalStateException; 1049 1050 /** 1051 * Prepares the player for playback, asynchronously. 1052 * 1053 * After setting the datasource and the display surface, you need to either 1054 * call prepare() or prepareAsync(). For streams, you should call prepareAsync(), 1055 * which returns immediately, rather than blocking until enough data has been 1056 * buffered. 1057 * 1058 * @throws IllegalStateException if it is called in an invalid state 1059 */ 1060 public native void prepareAsync() throws IllegalStateException; 1061 1062 /** 1063 * Starts or resumes playback. If playback had previously been paused, 1064 * playback will continue from where it was paused. If playback had 1065 * been stopped, or never started before, playback will start at the 1066 * beginning. 1067 * 1068 * @throws IllegalStateException if it is called in an invalid state 1069 */ 1070 public void start() throws IllegalStateException { 1071 stayAwake(true); 1072 _start(); 1073 } 1074 1075 private native void _start() throws IllegalStateException; 1076 1077 /** 1078 * Stops playback after playback has been stopped or paused. 1079 * 1080 * @throws IllegalStateException if the internal player engine has not been 1081 * initialized. 1082 */ 1083 public void stop() throws IllegalStateException { 1084 stayAwake(false); 1085 _stop(); 1086 } 1087 1088 private native void _stop() throws IllegalStateException; 1089 1090 /** 1091 * Pauses playback. Call start() to resume. 1092 * 1093 * @throws IllegalStateException if the internal player engine has not been 1094 * initialized. 1095 */ 1096 public void pause() throws IllegalStateException { 1097 stayAwake(false); 1098 _pause(); 1099 } 1100 1101 private native void _pause() throws IllegalStateException; 1102 1103 /** 1104 * Set the low-level power management behavior for this MediaPlayer. This 1105 * can be used when the MediaPlayer is not playing through a SurfaceHolder 1106 * set with {@link #setDisplay(SurfaceHolder)} and thus can use the 1107 * high-level {@link #setScreenOnWhilePlaying(boolean)} feature. 1108 * 1109 * <p>This function has the MediaPlayer access the low-level power manager 1110 * service to control the device's power usage while playing is occurring. 1111 * The parameter is a combination of {@link android.os.PowerManager} wake flags. 1112 * Use of this method requires {@link android.Manifest.permission#WAKE_LOCK} 1113 * permission. 1114 * By default, no attempt is made to keep the device awake during playback. 1115 * 1116 * @param context the Context to use 1117 * @param mode the power/wake mode to set 1118 * @see android.os.PowerManager 1119 */ 1120 public void setWakeMode(Context context, int mode) { 1121 boolean washeld = false; 1122 if (mWakeLock != null) { 1123 if (mWakeLock.isHeld()) { 1124 washeld = true; 1125 mWakeLock.release(); 1126 } 1127 mWakeLock = null; 1128 } 1129 1130 PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE); 1131 mWakeLock = pm.newWakeLock(mode|PowerManager.ON_AFTER_RELEASE, MediaPlayer.class.getName()); 1132 mWakeLock.setReferenceCounted(false); 1133 if (washeld) { 1134 mWakeLock.acquire(); 1135 } 1136 } 1137 1138 /** 1139 * Control whether we should use the attached SurfaceHolder to keep the 1140 * screen on while video playback is occurring. This is the preferred 1141 * method over {@link #setWakeMode} where possible, since it doesn't 1142 * require that the application have permission for low-level wake lock 1143 * access. 1144 * 1145 * @param screenOn Supply true to keep the screen on, false to allow it 1146 * to turn off. 1147 */ 1148 public void setScreenOnWhilePlaying(boolean screenOn) { 1149 if (mScreenOnWhilePlaying != screenOn) { 1150 if (screenOn && mSurfaceHolder == null) { 1151 Log.w(TAG, "setScreenOnWhilePlaying(true) is ineffective without a SurfaceHolder"); 1152 } 1153 mScreenOnWhilePlaying = screenOn; 1154 updateSurfaceScreenOn(); 1155 } 1156 } 1157 1158 private void stayAwake(boolean awake) { 1159 if (mWakeLock != null) { 1160 if (awake && !mWakeLock.isHeld()) { 1161 mWakeLock.acquire(); 1162 } else if (!awake && mWakeLock.isHeld()) { 1163 mWakeLock.release(); 1164 } 1165 } 1166 mStayAwake = awake; 1167 updateSurfaceScreenOn(); 1168 } 1169 1170 private void updateSurfaceScreenOn() { 1171 if (mSurfaceHolder != null) { 1172 mSurfaceHolder.setKeepScreenOn(mScreenOnWhilePlaying && mStayAwake); 1173 } 1174 } 1175 1176 /** 1177 * Returns the width of the video. 1178 * 1179 * @return the width of the video, or 0 if there is no video, 1180 * no display surface was set, or the width has not been determined 1181 * yet. The OnVideoSizeChangedListener can be registered via 1182 * {@link #setOnVideoSizeChangedListener(OnVideoSizeChangedListener)} 1183 * to provide a notification when the width is available. 1184 */ 1185 public native int getVideoWidth(); 1186 1187 /** 1188 * Returns the height of the video. 1189 * 1190 * @return the height of the video, or 0 if there is no video, 1191 * no display surface was set, or the height has not been determined 1192 * yet. The OnVideoSizeChangedListener can be registered via 1193 * {@link #setOnVideoSizeChangedListener(OnVideoSizeChangedListener)} 1194 * to provide a notification when the height is available. 1195 */ 1196 public native int getVideoHeight(); 1197 1198 /** 1199 * Checks whether the MediaPlayer is playing. 1200 * 1201 * @return true if currently playing, false otherwise 1202 * @throws IllegalStateException if the internal player engine has not been 1203 * initialized or has been released. 1204 */ 1205 public native boolean isPlaying(); 1206 1207 /** 1208 * Seeks to specified time position. 1209 * 1210 * @param msec the offset in milliseconds from the start to seek to 1211 * @throws IllegalStateException if the internal player engine has not been 1212 * initialized 1213 */ 1214 public native void seekTo(int msec) throws IllegalStateException; 1215 1216 /** 1217 * Gets the current playback position. 1218 * 1219 * @return the current position in milliseconds 1220 */ 1221 public native int getCurrentPosition(); 1222 1223 /** 1224 * Gets the duration of the file. 1225 * 1226 * @return the duration in milliseconds, if no duration is available 1227 * (for example, if streaming live content), -1 is returned. 1228 */ 1229 public native int getDuration(); 1230 1231 /** 1232 * Gets the media metadata. 1233 * 1234 * @param update_only controls whether the full set of available 1235 * metadata is returned or just the set that changed since the 1236 * last call. See {@see #METADATA_UPDATE_ONLY} and {@see 1237 * #METADATA_ALL}. 1238 * 1239 * @param apply_filter if true only metadata that matches the 1240 * filter is returned. See {@see #APPLY_METADATA_FILTER} and {@see 1241 * #BYPASS_METADATA_FILTER}. 1242 * 1243 * @return The metadata, possibly empty. null if an error occured. 1244 // FIXME: unhide. 1245 * {@hide} 1246 */ 1247 public Metadata getMetadata(final boolean update_only, 1248 final boolean apply_filter) { 1249 Parcel reply = Parcel.obtain(); 1250 Metadata data = new Metadata(); 1251 1252 if (!native_getMetadata(update_only, apply_filter, reply)) { 1253 reply.recycle(); 1254 return null; 1255 } 1256 1257 // Metadata takes over the parcel, don't recycle it unless 1258 // there is an error. 1259 if (!data.parse(reply)) { 1260 reply.recycle(); 1261 return null; 1262 } 1263 return data; 1264 } 1265 1266 /** 1267 * Set a filter for the metadata update notification and update 1268 * retrieval. The caller provides 2 set of metadata keys, allowed 1269 * and blocked. The blocked set always takes precedence over the 1270 * allowed one. 1271 * Metadata.MATCH_ALL and Metadata.MATCH_NONE are 2 sets available as 1272 * shorthands to allow/block all or no metadata. 1273 * 1274 * By default, there is no filter set. 1275 * 1276 * @param allow Is the set of metadata the client is interested 1277 * in receiving new notifications for. 1278 * @param block Is the set of metadata the client is not interested 1279 * in receiving new notifications for. 1280 * @return The call status code. 1281 * 1282 // FIXME: unhide. 1283 * {@hide} 1284 */ 1285 public int setMetadataFilter(Set<Integer> allow, Set<Integer> block) { 1286 // Do our serialization manually instead of calling 1287 // Parcel.writeArray since the sets are made of the same type 1288 // we avoid paying the price of calling writeValue (used by 1289 // writeArray) which burns an extra int per element to encode 1290 // the type. 1291 Parcel request = newRequest(); 1292 1293 // The parcel starts already with an interface token. There 1294 // are 2 filters. Each one starts with a 4bytes number to 1295 // store the len followed by a number of int (4 bytes as well) 1296 // representing the metadata type. 1297 int capacity = request.dataSize() + 4 * (1 + allow.size() + 1 + block.size()); 1298 1299 if (request.dataCapacity() < capacity) { 1300 request.setDataCapacity(capacity); 1301 } 1302 1303 request.writeInt(allow.size()); 1304 for(Integer t: allow) { 1305 request.writeInt(t); 1306 } 1307 request.writeInt(block.size()); 1308 for(Integer t: block) { 1309 request.writeInt(t); 1310 } 1311 return native_setMetadataFilter(request); 1312 } 1313 1314 /** 1315 * Set the MediaPlayer to start when this MediaPlayer finishes playback 1316 * (i.e. reaches the end of the stream). 1317 * The media framework will attempt to transition from this player to 1318 * the next as seamlessly as possible. The next player can be set at 1319 * any time before completion. The next player must be prepared by the 1320 * app, and the application should not call start() on it. 1321 * The next MediaPlayer must be different from 'this'. An exception 1322 * will be thrown if next == this. 1323 * The application may call setNextMediaPlayer(null) to indicate no 1324 * next player should be started at the end of playback. 1325 * If the current player is looping, it will keep looping and the next 1326 * player will not be started. 1327 * 1328 * @param next the player to start after this one completes playback. 1329 * 1330 */ 1331 public native void setNextMediaPlayer(MediaPlayer next); 1332 1333 /** 1334 * Releases resources associated with this MediaPlayer object. 1335 * It is considered good practice to call this method when you're 1336 * done using the MediaPlayer. In particular, whenever an Activity 1337 * of an application is paused (its onPause() method is called), 1338 * or stopped (its onStop() method is called), this method should be 1339 * invoked to release the MediaPlayer object, unless the application 1340 * has a special need to keep the object around. In addition to 1341 * unnecessary resources (such as memory and instances of codecs) 1342 * being held, failure to call this method immediately if a 1343 * MediaPlayer object is no longer needed may also lead to 1344 * continuous battery consumption for mobile devices, and playback 1345 * failure for other applications if no multiple instances of the 1346 * same codec are supported on a device. Even if multiple instances 1347 * of the same codec are supported, some performance degradation 1348 * may be expected when unnecessary multiple instances are used 1349 * at the same time. 1350 */ 1351 public void release() { 1352 stayAwake(false); 1353 updateSurfaceScreenOn(); 1354 mOnPreparedListener = null; 1355 mOnBufferingUpdateListener = null; 1356 mOnCompletionListener = null; 1357 mOnSeekCompleteListener = null; 1358 mOnErrorListener = null; 1359 mOnInfoListener = null; 1360 mOnVideoSizeChangedListener = null; 1361 mOnTimedTextListener = null; 1362 if (mTimeProvider != null) { 1363 mTimeProvider.close(); 1364 mTimeProvider = null; 1365 } 1366 mOnSubtitleDataListener = null; 1367 _release(); 1368 } 1369 1370 private native void _release(); 1371 1372 /** 1373 * Resets the MediaPlayer to its uninitialized state. After calling 1374 * this method, you will have to initialize it again by setting the 1375 * data source and calling prepare(). 1376 */ 1377 public void reset() { 1378 mSelectedSubtitleTrackIndex = -1; 1379 synchronized(mOpenSubtitleSources) { 1380 for (final InputStream is: mOpenSubtitleSources) { 1381 try { 1382 is.close(); 1383 } catch (IOException e) { 1384 } 1385 } 1386 mOpenSubtitleSources.clear(); 1387 } 1388 mOutOfBandSubtitleTracks.clear(); 1389 mInbandSubtitleTracks = new SubtitleTrack[0]; 1390 if (mSubtitleController != null) { 1391 mSubtitleController.reset(); 1392 } 1393 if (mTimeProvider != null) { 1394 mTimeProvider.close(); 1395 mTimeProvider = null; 1396 } 1397 1398 stayAwake(false); 1399 _reset(); 1400 // make sure none of the listeners get called anymore 1401 if (mEventHandler != null) { 1402 mEventHandler.removeCallbacksAndMessages(null); 1403 } 1404 1405 disableProxyListener(); 1406 } 1407 1408 private native void _reset(); 1409 1410 /** 1411 * Sets the audio stream type for this MediaPlayer. See {@link AudioManager} 1412 * for a list of stream types. Must call this method before prepare() or 1413 * prepareAsync() in order for the target stream type to become effective 1414 * thereafter. 1415 * 1416 * @param streamtype the audio stream type 1417 * @see android.media.AudioManager 1418 */ 1419 public native void setAudioStreamType(int streamtype); 1420 1421 /** 1422 * Sets the player to be looping or non-looping. 1423 * 1424 * @param looping whether to loop or not 1425 */ 1426 public native void setLooping(boolean looping); 1427 1428 /** 1429 * Checks whether the MediaPlayer is looping or non-looping. 1430 * 1431 * @return true if the MediaPlayer is currently looping, false otherwise 1432 */ 1433 public native boolean isLooping(); 1434 1435 /** 1436 * Sets the volume on this player. 1437 * This API is recommended for balancing the output of audio streams 1438 * within an application. Unless you are writing an application to 1439 * control user settings, this API should be used in preference to 1440 * {@link AudioManager#setStreamVolume(int, int, int)} which sets the volume of ALL streams of 1441 * a particular type. Note that the passed volume values are raw scalars in range 0.0 to 1.0. 1442 * UI controls should be scaled logarithmically. 1443 * 1444 * @param leftVolume left volume scalar 1445 * @param rightVolume right volume scalar 1446 */ 1447 /* 1448 * FIXME: Merge this into javadoc comment above when setVolume(float) is not @hide. 1449 * The single parameter form below is preferred if the channel volumes don't need 1450 * to be set independently. 1451 */ 1452 public native void setVolume(float leftVolume, float rightVolume); 1453 1454 /** 1455 * Similar, excepts sets volume of all channels to same value. 1456 * @hide 1457 */ 1458 public void setVolume(float volume) { 1459 setVolume(volume, volume); 1460 } 1461 1462 /** 1463 * Sets the audio session ID. 1464 * 1465 * @param sessionId the audio session ID. 1466 * The audio session ID is a system wide unique identifier for the audio stream played by 1467 * this MediaPlayer instance. 1468 * The primary use of the audio session ID is to associate audio effects to a particular 1469 * instance of MediaPlayer: if an audio session ID is provided when creating an audio effect, 1470 * this effect will be applied only to the audio content of media players within the same 1471 * audio session and not to the output mix. 1472 * When created, a MediaPlayer instance automatically generates its own audio session ID. 1473 * However, it is possible to force this player to be part of an already existing audio session 1474 * by calling this method. 1475 * This method must be called before one of the overloaded <code> setDataSource </code> methods. 1476 * @throws IllegalStateException if it is called in an invalid state 1477 */ 1478 public native void setAudioSessionId(int sessionId) throws IllegalArgumentException, IllegalStateException; 1479 1480 /** 1481 * Returns the audio session ID. 1482 * 1483 * @return the audio session ID. {@see #setAudioSessionId(int)} 1484 * Note that the audio session ID is 0 only if a problem occured when the MediaPlayer was contructed. 1485 */ 1486 public native int getAudioSessionId(); 1487 1488 /** 1489 * Attaches an auxiliary effect to the player. A typical auxiliary effect is a reverberation 1490 * effect which can be applied on any sound source that directs a certain amount of its 1491 * energy to this effect. This amount is defined by setAuxEffectSendLevel(). 1492 * {@see #setAuxEffectSendLevel(float)}. 1493 * <p>After creating an auxiliary effect (e.g. 1494 * {@link android.media.audiofx.EnvironmentalReverb}), retrieve its ID with 1495 * {@link android.media.audiofx.AudioEffect#getId()} and use it when calling this method 1496 * to attach the player to the effect. 1497 * <p>To detach the effect from the player, call this method with a null effect id. 1498 * <p>This method must be called after one of the overloaded <code> setDataSource </code> 1499 * methods. 1500 * @param effectId system wide unique id of the effect to attach 1501 */ 1502 public native void attachAuxEffect(int effectId); 1503 1504 1505 /** 1506 * Sets the send level of the player to the attached auxiliary effect 1507 * {@see #attachAuxEffect(int)}. The level value range is 0 to 1.0. 1508 * <p>By default the send level is 0, so even if an effect is attached to the player 1509 * this method must be called for the effect to be applied. 1510 * <p>Note that the passed level value is a raw scalar. UI controls should be scaled 1511 * logarithmically: the gain applied by audio framework ranges from -72dB to 0dB, 1512 * so an appropriate conversion from linear UI input x to level is: 1513 * x == 0 -> level = 0 1514 * 0 < x <= R -> level = 10^(72*(x-R)/20/R) 1515 * @param level send level scalar 1516 */ 1517 public native void setAuxEffectSendLevel(float level); 1518 1519 /* 1520 * @param request Parcel destinated to the media player. The 1521 * Interface token must be set to the IMediaPlayer 1522 * one to be routed correctly through the system. 1523 * @param reply[out] Parcel that will contain the reply. 1524 * @return The status code. 1525 */ 1526 private native final int native_invoke(Parcel request, Parcel reply); 1527 1528 1529 /* 1530 * @param update_only If true fetch only the set of metadata that have 1531 * changed since the last invocation of getMetadata. 1532 * The set is built using the unfiltered 1533 * notifications the native player sent to the 1534 * MediaPlayerService during that period of 1535 * time. If false, all the metadatas are considered. 1536 * @param apply_filter If true, once the metadata set has been built based on 1537 * the value update_only, the current filter is applied. 1538 * @param reply[out] On return contains the serialized 1539 * metadata. Valid only if the call was successful. 1540 * @return The status code. 1541 */ 1542 private native final boolean native_getMetadata(boolean update_only, 1543 boolean apply_filter, 1544 Parcel reply); 1545 1546 /* 1547 * @param request Parcel with the 2 serialized lists of allowed 1548 * metadata types followed by the one to be 1549 * dropped. Each list starts with an integer 1550 * indicating the number of metadata type elements. 1551 * @return The status code. 1552 */ 1553 private native final int native_setMetadataFilter(Parcel request); 1554 1555 private static native final void native_init(); 1556 private native final void native_setup(Object mediaplayer_this); 1557 private native final void native_finalize(); 1558 1559 /** 1560 * Class for MediaPlayer to return each audio/video/subtitle track's metadata. 1561 * 1562 * @see android.media.MediaPlayer#getTrackInfo 1563 */ 1564 static public class TrackInfo implements Parcelable { 1565 /** 1566 * Gets the track type. 1567 * @return TrackType which indicates if the track is video, audio, timed text. 1568 */ 1569 public int getTrackType() { 1570 return mTrackType; 1571 } 1572 1573 /** 1574 * Gets the language code of the track. 1575 * @return a language code in either way of ISO-639-1 or ISO-639-2. 1576 * When the language is unknown or could not be determined, 1577 * ISO-639-2 language code, "und", is returned. 1578 */ 1579 public String getLanguage() { 1580 String language = mFormat.getString(MediaFormat.KEY_LANGUAGE); 1581 return language == null ? "und" : language; 1582 } 1583 1584 /** 1585 * Gets the {@link MediaFormat} of the track. If the format is 1586 * unknown or could not be determined, null is returned. 1587 */ 1588 public MediaFormat getFormat() { 1589 if (mTrackType == MEDIA_TRACK_TYPE_TIMEDTEXT 1590 || mTrackType == MEDIA_TRACK_TYPE_SUBTITLE) { 1591 return mFormat; 1592 } 1593 return null; 1594 } 1595 1596 public static final int MEDIA_TRACK_TYPE_UNKNOWN = 0; 1597 public static final int MEDIA_TRACK_TYPE_VIDEO = 1; 1598 public static final int MEDIA_TRACK_TYPE_AUDIO = 2; 1599 public static final int MEDIA_TRACK_TYPE_TIMEDTEXT = 3; 1600 /** @hide */ 1601 public static final int MEDIA_TRACK_TYPE_SUBTITLE = 4; 1602 1603 final int mTrackType; 1604 final MediaFormat mFormat; 1605 1606 TrackInfo(Parcel in) { 1607 mTrackType = in.readInt(); 1608 // TODO: parcel in the full MediaFormat 1609 String language = in.readString(); 1610 1611 if (mTrackType == MEDIA_TRACK_TYPE_TIMEDTEXT) { 1612 mFormat = MediaFormat.createSubtitleFormat( 1613 MEDIA_MIMETYPE_TEXT_SUBRIP, language); 1614 } else if (mTrackType == MEDIA_TRACK_TYPE_SUBTITLE) { 1615 mFormat = MediaFormat.createSubtitleFormat( 1616 MEDIA_MIMETYPE_TEXT_VTT, language); 1617 mFormat.setInteger(MediaFormat.KEY_IS_AUTOSELECT, in.readInt()); 1618 mFormat.setInteger(MediaFormat.KEY_IS_DEFAULT, in.readInt()); 1619 mFormat.setInteger(MediaFormat.KEY_IS_FORCED_SUBTITLE, in.readInt()); 1620 } else { 1621 mFormat = new MediaFormat(); 1622 mFormat.setString(MediaFormat.KEY_LANGUAGE, language); 1623 } 1624 } 1625 1626 /** @hide */ 1627 TrackInfo(int type, MediaFormat format) { 1628 mTrackType = type; 1629 mFormat = format; 1630 } 1631 1632 /** 1633 * {@inheritDoc} 1634 */ 1635 @Override 1636 public int describeContents() { 1637 return 0; 1638 } 1639 1640 /** 1641 * {@inheritDoc} 1642 */ 1643 @Override 1644 public void writeToParcel(Parcel dest, int flags) { 1645 dest.writeInt(mTrackType); 1646 dest.writeString(getLanguage()); 1647 1648 if (mTrackType == MEDIA_TRACK_TYPE_SUBTITLE) { 1649 dest.writeInt(mFormat.getInteger(MediaFormat.KEY_IS_AUTOSELECT)); 1650 dest.writeInt(mFormat.getInteger(MediaFormat.KEY_IS_DEFAULT)); 1651 dest.writeInt(mFormat.getInteger(MediaFormat.KEY_IS_FORCED_SUBTITLE)); 1652 } 1653 } 1654 1655 /** 1656 * Used to read a TrackInfo from a Parcel. 1657 */ 1658 static final Parcelable.Creator<TrackInfo> CREATOR 1659 = new Parcelable.Creator<TrackInfo>() { 1660 @Override 1661 public TrackInfo createFromParcel(Parcel in) { 1662 return new TrackInfo(in); 1663 } 1664 1665 @Override 1666 public TrackInfo[] newArray(int size) { 1667 return new TrackInfo[size]; 1668 } 1669 }; 1670 1671 }; 1672 1673 /** 1674 * Returns an array of track information. 1675 * 1676 * @return Array of track info. The total number of tracks is the array length. 1677 * Must be called again if an external timed text source has been added after any of the 1678 * addTimedTextSource methods are called. 1679 * @throws IllegalStateException if it is called in an invalid state. 1680 */ 1681 public TrackInfo[] getTrackInfo() throws IllegalStateException { 1682 TrackInfo trackInfo[] = getInbandTrackInfo(); 1683 // add out-of-band tracks 1684 TrackInfo allTrackInfo[] = new TrackInfo[trackInfo.length + mOutOfBandSubtitleTracks.size()]; 1685 System.arraycopy(trackInfo, 0, allTrackInfo, 0, trackInfo.length); 1686 int i = trackInfo.length; 1687 for (SubtitleTrack track: mOutOfBandSubtitleTracks) { 1688 allTrackInfo[i] = new TrackInfo(TrackInfo.MEDIA_TRACK_TYPE_SUBTITLE, track.getFormat()); 1689 ++i; 1690 } 1691 return allTrackInfo; 1692 } 1693 1694 private TrackInfo[] getInbandTrackInfo() throws IllegalStateException { 1695 Parcel request = Parcel.obtain(); 1696 Parcel reply = Parcel.obtain(); 1697 try { 1698 request.writeInterfaceToken(IMEDIA_PLAYER); 1699 request.writeInt(INVOKE_ID_GET_TRACK_INFO); 1700 invoke(request, reply); 1701 TrackInfo trackInfo[] = reply.createTypedArray(TrackInfo.CREATOR); 1702 return trackInfo; 1703 } finally { 1704 request.recycle(); 1705 reply.recycle(); 1706 } 1707 } 1708 1709 /* Do not change these values without updating their counterparts 1710 * in include/media/stagefright/MediaDefs.h and media/libstagefright/MediaDefs.cpp! 1711 */ 1712 /** 1713 * MIME type for SubRip (SRT) container. Used in addTimedTextSource APIs. 1714 */ 1715 public static final String MEDIA_MIMETYPE_TEXT_SUBRIP = "application/x-subrip"; 1716 1717 /** 1718 * MIME type for WebVTT subtitle data. 1719 * @hide 1720 */ 1721 public static final String MEDIA_MIMETYPE_TEXT_VTT = "text/vtt"; 1722 1723 /* 1724 * A helper function to check if the mime type is supported by media framework. 1725 */ 1726 private static boolean availableMimeTypeForExternalSource(String mimeType) { 1727 if (mimeType == MEDIA_MIMETYPE_TEXT_SUBRIP) { 1728 return true; 1729 } 1730 return false; 1731 } 1732 1733 private SubtitleController mSubtitleController; 1734 1735 /** @hide */ 1736 public void setSubtitleAnchor( 1737 SubtitleController controller, 1738 SubtitleController.Anchor anchor) { 1739 // TODO: create SubtitleController in MediaPlayer 1740 mSubtitleController = controller; 1741 mSubtitleController.setAnchor(anchor); 1742 } 1743 1744 private SubtitleTrack[] mInbandSubtitleTracks; 1745 private int mSelectedSubtitleTrackIndex = -1; 1746 private Vector<SubtitleTrack> mOutOfBandSubtitleTracks; 1747 private Vector<InputStream> mOpenSubtitleSources; 1748 1749 private OnSubtitleDataListener mSubtitleDataListener = new OnSubtitleDataListener() { 1750 @Override 1751 public void onSubtitleData(MediaPlayer mp, SubtitleData data) { 1752 int index = data.getTrackIndex(); 1753 if (index >= mInbandSubtitleTracks.length) { 1754 return; 1755 } 1756 SubtitleTrack track = mInbandSubtitleTracks[index]; 1757 if (track != null) { 1758 try { 1759 long runID = data.getStartTimeUs() + 1; 1760 // TODO: move conversion into track 1761 track.onData(new String(data.getData(), "UTF-8"), true /* eos */, runID); 1762 track.setRunDiscardTimeMs( 1763 runID, 1764 (data.getStartTimeUs() + data.getDurationUs()) / 1000); 1765 } catch (java.io.UnsupportedEncodingException e) { 1766 Log.w(TAG, "subtitle data for track " + index + " is not UTF-8 encoded: " + e); 1767 } 1768 } 1769 } 1770 }; 1771 1772 /** @hide */ 1773 @Override 1774 public void onSubtitleTrackSelected(SubtitleTrack track) { 1775 if (mSelectedSubtitleTrackIndex >= 0) { 1776 try { 1777 selectOrDeselectInbandTrack(mSelectedSubtitleTrackIndex, false); 1778 } catch (IllegalStateException e) { 1779 } 1780 mSelectedSubtitleTrackIndex = -1; 1781 } 1782 setOnSubtitleDataListener(null); 1783 if (track == null) { 1784 return; 1785 } 1786 for (int i = 0; i < mInbandSubtitleTracks.length; i++) { 1787 if (mInbandSubtitleTracks[i] == track) { 1788 Log.v(TAG, "Selecting subtitle track " + i); 1789 mSelectedSubtitleTrackIndex = i; 1790 try { 1791 selectOrDeselectInbandTrack(mSelectedSubtitleTrackIndex, true); 1792 } catch (IllegalStateException e) { 1793 } 1794 setOnSubtitleDataListener(mSubtitleDataListener); 1795 break; 1796 } 1797 } 1798 // no need to select out-of-band tracks 1799 } 1800 1801 /** @hide */ 1802 public void addSubtitleSource(InputStream is, MediaFormat format) 1803 throws IllegalStateException 1804 { 1805 final InputStream fIs = is; 1806 final MediaFormat fFormat = format; 1807 1808 // Ensure all input streams are closed. It is also a handy 1809 // way to implement timeouts in the future. 1810 synchronized(mOpenSubtitleSources) { 1811 mOpenSubtitleSources.add(is); 1812 } 1813 1814 // process each subtitle in its own thread 1815 final HandlerThread thread = new HandlerThread("SubtitleReadThread", 1816 Process.THREAD_PRIORITY_BACKGROUND + Process.THREAD_PRIORITY_MORE_FAVORABLE); 1817 thread.start(); 1818 Handler handler = new Handler(thread.getLooper()); 1819 handler.post(new Runnable() { 1820 private int addTrack() { 1821 if (fIs == null || mSubtitleController == null) { 1822 return MEDIA_INFO_UNSUPPORTED_SUBTITLE; 1823 } 1824 1825 SubtitleTrack track = mSubtitleController.addTrack(fFormat); 1826 if (track == null) { 1827 return MEDIA_INFO_UNSUPPORTED_SUBTITLE; 1828 } 1829 1830 // TODO: do the conversion in the subtitle track 1831 Scanner scanner = new Scanner(fIs, "UTF-8"); 1832 String contents = scanner.useDelimiter("\\A").next(); 1833 synchronized(mOpenSubtitleSources) { 1834 mOpenSubtitleSources.remove(fIs); 1835 } 1836 scanner.close(); 1837 mOutOfBandSubtitleTracks.add(track); 1838 track.onData(contents, true /* eos */, ~0 /* runID: keep forever */); 1839 return MEDIA_INFO_EXTERNAL_METADATA_UPDATE; 1840 } 1841 1842 public void run() { 1843 int res = addTrack(); 1844 if (mEventHandler != null) { 1845 Message m = mEventHandler.obtainMessage(MEDIA_INFO, res, 0, null); 1846 mEventHandler.sendMessage(m); 1847 } 1848 thread.getLooper().quitSafely(); 1849 } 1850 }); 1851 } 1852 1853 private void scanInternalSubtitleTracks() { 1854 if (mSubtitleController == null) { 1855 Log.e(TAG, "Should have subtitle controller already set"); 1856 return; 1857 } 1858 1859 TrackInfo[] tracks = getInbandTrackInfo(); 1860 SubtitleTrack[] inbandTracks = new SubtitleTrack[tracks.length]; 1861 for (int i=0; i < tracks.length; i++) { 1862 if (tracks[i].getTrackType() == TrackInfo.MEDIA_TRACK_TYPE_SUBTITLE) { 1863 if (i < mInbandSubtitleTracks.length) { 1864 inbandTracks[i] = mInbandSubtitleTracks[i]; 1865 } else { 1866 SubtitleTrack track = mSubtitleController.addTrack( 1867 tracks[i].getFormat()); 1868 inbandTracks[i] = track; 1869 } 1870 } 1871 } 1872 mInbandSubtitleTracks = inbandTracks; 1873 mSubtitleController.selectDefaultTrack(); 1874 } 1875 1876 /* TODO: Limit the total number of external timed text source to a reasonable number. 1877 */ 1878 /** 1879 * Adds an external timed text source file. 1880 * 1881 * Currently supported format is SubRip with the file extension .srt, case insensitive. 1882 * Note that a single external timed text source may contain multiple tracks in it. 1883 * One can find the total number of available tracks using {@link #getTrackInfo()} to see what 1884 * additional tracks become available after this method call. 1885 * 1886 * @param path The file path of external timed text source file. 1887 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1888 * @throws IOException if the file cannot be accessed or is corrupted. 1889 * @throws IllegalArgumentException if the mimeType is not supported. 1890 * @throws IllegalStateException if called in an invalid state. 1891 */ 1892 public void addTimedTextSource(String path, String mimeType) 1893 throws IOException, IllegalArgumentException, IllegalStateException { 1894 if (!availableMimeTypeForExternalSource(mimeType)) { 1895 final String msg = "Illegal mimeType for timed text source: " + mimeType; 1896 throw new IllegalArgumentException(msg); 1897 } 1898 1899 File file = new File(path); 1900 if (file.exists()) { 1901 FileInputStream is = new FileInputStream(file); 1902 FileDescriptor fd = is.getFD(); 1903 addTimedTextSource(fd, mimeType); 1904 is.close(); 1905 } else { 1906 // We do not support the case where the path is not a file. 1907 throw new IOException(path); 1908 } 1909 } 1910 1911 /** 1912 * Adds an external timed text source file (Uri). 1913 * 1914 * Currently supported format is SubRip with the file extension .srt, case insensitive. 1915 * Note that a single external timed text source may contain multiple tracks in it. 1916 * One can find the total number of available tracks using {@link #getTrackInfo()} to see what 1917 * additional tracks become available after this method call. 1918 * 1919 * @param context the Context to use when resolving the Uri 1920 * @param uri the Content URI of the data you want to play 1921 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1922 * @throws IOException if the file cannot be accessed or is corrupted. 1923 * @throws IllegalArgumentException if the mimeType is not supported. 1924 * @throws IllegalStateException if called in an invalid state. 1925 */ 1926 public void addTimedTextSource(Context context, Uri uri, String mimeType) 1927 throws IOException, IllegalArgumentException, IllegalStateException { 1928 String scheme = uri.getScheme(); 1929 if(scheme == null || scheme.equals("file")) { 1930 addTimedTextSource(uri.getPath(), mimeType); 1931 return; 1932 } 1933 1934 AssetFileDescriptor fd = null; 1935 try { 1936 ContentResolver resolver = context.getContentResolver(); 1937 fd = resolver.openAssetFileDescriptor(uri, "r"); 1938 if (fd == null) { 1939 return; 1940 } 1941 addTimedTextSource(fd.getFileDescriptor(), mimeType); 1942 return; 1943 } catch (SecurityException ex) { 1944 } catch (IOException ex) { 1945 } finally { 1946 if (fd != null) { 1947 fd.close(); 1948 } 1949 } 1950 } 1951 1952 /** 1953 * Adds an external timed text source file (FileDescriptor). 1954 * 1955 * It is the caller's responsibility to close the file descriptor. 1956 * It is safe to do so as soon as this call returns. 1957 * 1958 * Currently supported format is SubRip. Note that a single external timed text source may 1959 * contain multiple tracks in it. One can find the total number of available tracks 1960 * using {@link #getTrackInfo()} to see what additional tracks become available 1961 * after this method call. 1962 * 1963 * @param fd the FileDescriptor for the file you want to play 1964 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1965 * @throws IllegalArgumentException if the mimeType is not supported. 1966 * @throws IllegalStateException if called in an invalid state. 1967 */ 1968 public void addTimedTextSource(FileDescriptor fd, String mimeType) 1969 throws IllegalArgumentException, IllegalStateException { 1970 // intentionally less than LONG_MAX 1971 addTimedTextSource(fd, 0, 0x7ffffffffffffffL, mimeType); 1972 } 1973 1974 /** 1975 * Adds an external timed text file (FileDescriptor). 1976 * 1977 * It is the caller's responsibility to close the file descriptor. 1978 * It is safe to do so as soon as this call returns. 1979 * 1980 * Currently supported format is SubRip. Note that a single external timed text source may 1981 * contain multiple tracks in it. One can find the total number of available tracks 1982 * using {@link #getTrackInfo()} to see what additional tracks become available 1983 * after this method call. 1984 * 1985 * @param fd the FileDescriptor for the file you want to play 1986 * @param offset the offset into the file where the data to be played starts, in bytes 1987 * @param length the length in bytes of the data to be played 1988 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1989 * @throws IllegalArgumentException if the mimeType is not supported. 1990 * @throws IllegalStateException if called in an invalid state. 1991 */ 1992 public void addTimedTextSource(FileDescriptor fd, long offset, long length, String mimeType) 1993 throws IllegalArgumentException, IllegalStateException { 1994 if (!availableMimeTypeForExternalSource(mimeType)) { 1995 throw new IllegalArgumentException("Illegal mimeType for timed text source: " + mimeType); 1996 } 1997 1998 Parcel request = Parcel.obtain(); 1999 Parcel reply = Parcel.obtain(); 2000 try { 2001 request.writeInterfaceToken(IMEDIA_PLAYER); 2002 request.writeInt(INVOKE_ID_ADD_EXTERNAL_SOURCE_FD); 2003 request.writeFileDescriptor(fd); 2004 request.writeLong(offset); 2005 request.writeLong(length); 2006 request.writeString(mimeType); 2007 invoke(request, reply); 2008 } finally { 2009 request.recycle(); 2010 reply.recycle(); 2011 } 2012 } 2013 2014 /** 2015 * Selects a track. 2016 * <p> 2017 * If a MediaPlayer is in invalid state, it throws an IllegalStateException exception. 2018 * If a MediaPlayer is in <em>Started</em> state, the selected track is presented immediately. 2019 * If a MediaPlayer is not in Started state, it just marks the track to be played. 2020 * </p> 2021 * <p> 2022 * In any valid state, if it is called multiple times on the same type of track (ie. Video, 2023 * Audio, Timed Text), the most recent one will be chosen. 2024 * </p> 2025 * <p> 2026 * The first audio and video tracks are selected by default if available, even though 2027 * this method is not called. However, no timed text track will be selected until 2028 * this function is called. 2029 * </p> 2030 * <p> 2031 * Currently, only timed text tracks or audio tracks can be selected via this method. 2032 * In addition, the support for selecting an audio track at runtime is pretty limited 2033 * in that an audio track can only be selected in the <em>Prepared</em> state. 2034 * </p> 2035 * @param index the index of the track to be selected. The valid range of the index 2036 * is 0..total number of track - 1. The total number of tracks as well as the type of 2037 * each individual track can be found by calling {@link #getTrackInfo()} method. 2038 * @throws IllegalStateException if called in an invalid state. 2039 * 2040 * @see android.media.MediaPlayer#getTrackInfo 2041 */ 2042 public void selectTrack(int index) throws IllegalStateException { 2043 selectOrDeselectTrack(index, true /* select */); 2044 } 2045 2046 /** 2047 * Deselect a track. 2048 * <p> 2049 * Currently, the track must be a timed text track and no audio or video tracks can be 2050 * deselected. If the timed text track identified by index has not been 2051 * selected before, it throws an exception. 2052 * </p> 2053 * @param index the index of the track to be deselected. The valid range of the index 2054 * is 0..total number of tracks - 1. The total number of tracks as well as the type of 2055 * each individual track can be found by calling {@link #getTrackInfo()} method. 2056 * @throws IllegalStateException if called in an invalid state. 2057 * 2058 * @see android.media.MediaPlayer#getTrackInfo 2059 */ 2060 public void deselectTrack(int index) throws IllegalStateException { 2061 selectOrDeselectTrack(index, false /* select */); 2062 } 2063 2064 private void selectOrDeselectTrack(int index, boolean select) 2065 throws IllegalStateException { 2066 // handle subtitle track through subtitle controller 2067 SubtitleTrack track = null; 2068 if (index < mInbandSubtitleTracks.length) { 2069 track = mInbandSubtitleTracks[index]; 2070 } else if (index < mInbandSubtitleTracks.length + mOutOfBandSubtitleTracks.size()) { 2071 track = mOutOfBandSubtitleTracks.get(index - mInbandSubtitleTracks.length); 2072 } 2073 2074 if (mSubtitleController != null && track != null) { 2075 if (select) { 2076 mSubtitleController.selectTrack(track); 2077 } else if (mSubtitleController.getSelectedTrack() == track) { 2078 mSubtitleController.selectTrack(null); 2079 } else { 2080 Log.w(TAG, "trying to deselect track that was not selected"); 2081 } 2082 return; 2083 } 2084 2085 selectOrDeselectInbandTrack(index, select); 2086 } 2087 2088 private void selectOrDeselectInbandTrack(int index, boolean select) 2089 throws IllegalStateException { 2090 Parcel request = Parcel.obtain(); 2091 Parcel reply = Parcel.obtain(); 2092 try { 2093 request.writeInterfaceToken(IMEDIA_PLAYER); 2094 request.writeInt(select? INVOKE_ID_SELECT_TRACK: INVOKE_ID_DESELECT_TRACK); 2095 request.writeInt(index); 2096 invoke(request, reply); 2097 } finally { 2098 request.recycle(); 2099 reply.recycle(); 2100 } 2101 } 2102 2103 2104 /** 2105 * @param reply Parcel with audio/video duration info for battery 2106 tracking usage 2107 * @return The status code. 2108 * {@hide} 2109 */ 2110 public native static int native_pullBatteryData(Parcel reply); 2111 2112 /** 2113 * Sets the target UDP re-transmit endpoint for the low level player. 2114 * Generally, the address portion of the endpoint is an IP multicast 2115 * address, although a unicast address would be equally valid. When a valid 2116 * retransmit endpoint has been set, the media player will not decode and 2117 * render the media presentation locally. Instead, the player will attempt 2118 * to re-multiplex its media data using the Android@Home RTP profile and 2119 * re-transmit to the target endpoint. Receiver devices (which may be 2120 * either the same as the transmitting device or different devices) may 2121 * instantiate, prepare, and start a receiver player using a setDataSource 2122 * URL of the form... 2123 * 2124 * aahRX://<multicastIP>:<port> 2125 * 2126 * to receive, decode and render the re-transmitted content. 2127 * 2128 * setRetransmitEndpoint may only be called before setDataSource has been 2129 * called; while the player is in the Idle state. 2130 * 2131 * @param endpoint the address and UDP port of the re-transmission target or 2132 * null if no re-transmission is to be performed. 2133 * @throws IllegalStateException if it is called in an invalid state 2134 * @throws IllegalArgumentException if the retransmit endpoint is supplied, 2135 * but invalid. 2136 * 2137 * {@hide} pending API council 2138 */ 2139 public void setRetransmitEndpoint(InetSocketAddress endpoint) 2140 throws IllegalStateException, IllegalArgumentException 2141 { 2142 String addrString = null; 2143 int port = 0; 2144 2145 if (null != endpoint) { 2146 addrString = endpoint.getAddress().getHostAddress(); 2147 port = endpoint.getPort(); 2148 } 2149 2150 int ret = native_setRetransmitEndpoint(addrString, port); 2151 if (ret != 0) { 2152 throw new IllegalArgumentException("Illegal re-transmit endpoint; native ret " + ret); 2153 } 2154 } 2155 2156 private native final int native_setRetransmitEndpoint(String addrString, int port); 2157 2158 @Override 2159 protected void finalize() { native_finalize(); } 2160 2161 /* Do not change these values without updating their counterparts 2162 * in include/media/mediaplayer.h! 2163 */ 2164 private static final int MEDIA_NOP = 0; // interface test message 2165 private static final int MEDIA_PREPARED = 1; 2166 private static final int MEDIA_PLAYBACK_COMPLETE = 2; 2167 private static final int MEDIA_BUFFERING_UPDATE = 3; 2168 private static final int MEDIA_SEEK_COMPLETE = 4; 2169 private static final int MEDIA_SET_VIDEO_SIZE = 5; 2170 private static final int MEDIA_STARTED = 6; 2171 private static final int MEDIA_PAUSED = 7; 2172 private static final int MEDIA_STOPPED = 8; 2173 private static final int MEDIA_SKIPPED = 9; 2174 private static final int MEDIA_TIMED_TEXT = 99; 2175 private static final int MEDIA_ERROR = 100; 2176 private static final int MEDIA_INFO = 200; 2177 private static final int MEDIA_SUBTITLE_DATA = 201; 2178 2179 private TimeProvider mTimeProvider; 2180 2181 /** @hide */ 2182 public MediaTimeProvider getMediaTimeProvider() { 2183 if (mTimeProvider == null) { 2184 mTimeProvider = new TimeProvider(this); 2185 } 2186 return mTimeProvider; 2187 } 2188 2189 private class EventHandler extends Handler 2190 { 2191 private MediaPlayer mMediaPlayer; 2192 2193 public EventHandler(MediaPlayer mp, Looper looper) { 2194 super(looper); 2195 mMediaPlayer = mp; 2196 } 2197 2198 @Override 2199 public void handleMessage(Message msg) { 2200 if (mMediaPlayer.mNativeContext == 0) { 2201 Log.w(TAG, "mediaplayer went away with unhandled events"); 2202 return; 2203 } 2204 switch(msg.what) { 2205 case MEDIA_PREPARED: 2206 scanInternalSubtitleTracks(); 2207 if (mOnPreparedListener != null) 2208 mOnPreparedListener.onPrepared(mMediaPlayer); 2209 return; 2210 2211 case MEDIA_PLAYBACK_COMPLETE: 2212 if (mOnCompletionListener != null) 2213 mOnCompletionListener.onCompletion(mMediaPlayer); 2214 stayAwake(false); 2215 return; 2216 2217 case MEDIA_STOPPED: 2218 if (mTimeProvider != null) { 2219 mTimeProvider.onStopped(); 2220 } 2221 break; 2222 2223 case MEDIA_STARTED: 2224 case MEDIA_PAUSED: 2225 if (mTimeProvider != null) { 2226 mTimeProvider.onPaused(msg.what == MEDIA_PAUSED); 2227 } 2228 break; 2229 2230 case MEDIA_BUFFERING_UPDATE: 2231 if (mOnBufferingUpdateListener != null) 2232 mOnBufferingUpdateListener.onBufferingUpdate(mMediaPlayer, msg.arg1); 2233 return; 2234 2235 case MEDIA_SEEK_COMPLETE: 2236 if (mOnSeekCompleteListener != null) { 2237 mOnSeekCompleteListener.onSeekComplete(mMediaPlayer); 2238 } 2239 // fall through 2240 2241 case MEDIA_SKIPPED: 2242 if (mTimeProvider != null) { 2243 mTimeProvider.onSeekComplete(mMediaPlayer); 2244 } 2245 return; 2246 2247 case MEDIA_SET_VIDEO_SIZE: 2248 if (mOnVideoSizeChangedListener != null) 2249 mOnVideoSizeChangedListener.onVideoSizeChanged(mMediaPlayer, msg.arg1, msg.arg2); 2250 return; 2251 2252 case MEDIA_ERROR: 2253 Log.e(TAG, "Error (" + msg.arg1 + "," + msg.arg2 + ")"); 2254 boolean error_was_handled = false; 2255 if (mOnErrorListener != null) { 2256 error_was_handled = mOnErrorListener.onError(mMediaPlayer, msg.arg1, msg.arg2); 2257 } 2258 if (mOnCompletionListener != null && ! error_was_handled) { 2259 mOnCompletionListener.onCompletion(mMediaPlayer); 2260 } 2261 stayAwake(false); 2262 return; 2263 2264 case MEDIA_INFO: 2265 switch (msg.arg1) { 2266 case MEDIA_INFO_VIDEO_TRACK_LAGGING: 2267 Log.i(TAG, "Info (" + msg.arg1 + "," + msg.arg2 + ")"); 2268 break; 2269 case MEDIA_INFO_METADATA_UPDATE: 2270 scanInternalSubtitleTracks(); 2271 // fall through 2272 2273 case MEDIA_INFO_EXTERNAL_METADATA_UPDATE: 2274 msg.arg1 = MEDIA_INFO_METADATA_UPDATE; 2275 // update default track selection 2276 mSubtitleController.selectDefaultTrack(); 2277 break; 2278 } 2279 2280 if (mOnInfoListener != null) { 2281 mOnInfoListener.onInfo(mMediaPlayer, msg.arg1, msg.arg2); 2282 } 2283 // No real default action so far. 2284 return; 2285 case MEDIA_TIMED_TEXT: 2286 if (mOnTimedTextListener == null) 2287 return; 2288 if (msg.obj == null) { 2289 mOnTimedTextListener.onTimedText(mMediaPlayer, null); 2290 } else { 2291 if (msg.obj instanceof Parcel) { 2292 Parcel parcel = (Parcel)msg.obj; 2293 TimedText text = new TimedText(parcel); 2294 parcel.recycle(); 2295 mOnTimedTextListener.onTimedText(mMediaPlayer, text); 2296 } 2297 } 2298 return; 2299 2300 case MEDIA_SUBTITLE_DATA: 2301 if (mOnSubtitleDataListener == null) { 2302 return; 2303 } 2304 if (msg.obj instanceof Parcel) { 2305 Parcel parcel = (Parcel) msg.obj; 2306 SubtitleData data = new SubtitleData(parcel); 2307 parcel.recycle(); 2308 mOnSubtitleDataListener.onSubtitleData(mMediaPlayer, data); 2309 } 2310 return; 2311 2312 case MEDIA_NOP: // interface test message - ignore 2313 break; 2314 2315 default: 2316 Log.e(TAG, "Unknown message type " + msg.what); 2317 return; 2318 } 2319 } 2320 } 2321 2322 /* 2323 * Called from native code when an interesting event happens. This method 2324 * just uses the EventHandler system to post the event back to the main app thread. 2325 * We use a weak reference to the original MediaPlayer object so that the native 2326 * code is safe from the object disappearing from underneath it. (This is 2327 * the cookie passed to native_setup().) 2328 */ 2329 private static void postEventFromNative(Object mediaplayer_ref, 2330 int what, int arg1, int arg2, Object obj) 2331 { 2332 MediaPlayer mp = (MediaPlayer)((WeakReference)mediaplayer_ref).get(); 2333 if (mp == null) { 2334 return; 2335 } 2336 2337 if (what == MEDIA_INFO && arg1 == MEDIA_INFO_STARTED_AS_NEXT) { 2338 // this acquires the wakelock if needed, and sets the client side state 2339 mp.start(); 2340 } 2341 if (mp.mEventHandler != null) { 2342 Message m = mp.mEventHandler.obtainMessage(what, arg1, arg2, obj); 2343 mp.mEventHandler.sendMessage(m); 2344 } 2345 } 2346 2347 /** 2348 * Interface definition for a callback to be invoked when the media 2349 * source is ready for playback. 2350 */ 2351 public interface OnPreparedListener 2352 { 2353 /** 2354 * Called when the media file is ready for playback. 2355 * 2356 * @param mp the MediaPlayer that is ready for playback 2357 */ 2358 void onPrepared(MediaPlayer mp); 2359 } 2360 2361 /** 2362 * Register a callback to be invoked when the media source is ready 2363 * for playback. 2364 * 2365 * @param listener the callback that will be run 2366 */ 2367 public void setOnPreparedListener(OnPreparedListener listener) 2368 { 2369 mOnPreparedListener = listener; 2370 } 2371 2372 private OnPreparedListener mOnPreparedListener; 2373 2374 /** 2375 * Interface definition for a callback to be invoked when playback of 2376 * a media source has completed. 2377 */ 2378 public interface OnCompletionListener 2379 { 2380 /** 2381 * Called when the end of a media source is reached during playback. 2382 * 2383 * @param mp the MediaPlayer that reached the end of the file 2384 */ 2385 void onCompletion(MediaPlayer mp); 2386 } 2387 2388 /** 2389 * Register a callback to be invoked when the end of a media source 2390 * has been reached during playback. 2391 * 2392 * @param listener the callback that will be run 2393 */ 2394 public void setOnCompletionListener(OnCompletionListener listener) 2395 { 2396 mOnCompletionListener = listener; 2397 } 2398 2399 private OnCompletionListener mOnCompletionListener; 2400 2401 /** 2402 * Interface definition of a callback to be invoked indicating buffering 2403 * status of a media resource being streamed over the network. 2404 */ 2405 public interface OnBufferingUpdateListener 2406 { 2407 /** 2408 * Called to update status in buffering a media stream received through 2409 * progressive HTTP download. The received buffering percentage 2410 * indicates how much of the content has been buffered or played. 2411 * For example a buffering update of 80 percent when half the content 2412 * has already been played indicates that the next 30 percent of the 2413 * content to play has been buffered. 2414 * 2415 * @param mp the MediaPlayer the update pertains to 2416 * @param percent the percentage (0-100) of the content 2417 * that has been buffered or played thus far 2418 */ 2419 void onBufferingUpdate(MediaPlayer mp, int percent); 2420 } 2421 2422 /** 2423 * Register a callback to be invoked when the status of a network 2424 * stream's buffer has changed. 2425 * 2426 * @param listener the callback that will be run. 2427 */ 2428 public void setOnBufferingUpdateListener(OnBufferingUpdateListener listener) 2429 { 2430 mOnBufferingUpdateListener = listener; 2431 } 2432 2433 private OnBufferingUpdateListener mOnBufferingUpdateListener; 2434 2435 /** 2436 * Interface definition of a callback to be invoked indicating 2437 * the completion of a seek operation. 2438 */ 2439 public interface OnSeekCompleteListener 2440 { 2441 /** 2442 * Called to indicate the completion of a seek operation. 2443 * 2444 * @param mp the MediaPlayer that issued the seek operation 2445 */ 2446 public void onSeekComplete(MediaPlayer mp); 2447 } 2448 2449 /** 2450 * Register a callback to be invoked when a seek operation has been 2451 * completed. 2452 * 2453 * @param listener the callback that will be run 2454 */ 2455 public void setOnSeekCompleteListener(OnSeekCompleteListener listener) 2456 { 2457 mOnSeekCompleteListener = listener; 2458 } 2459 2460 private OnSeekCompleteListener mOnSeekCompleteListener; 2461 2462 /** 2463 * Interface definition of a callback to be invoked when the 2464 * video size is first known or updated 2465 */ 2466 public interface OnVideoSizeChangedListener 2467 { 2468 /** 2469 * Called to indicate the video size 2470 * 2471 * The video size (width and height) could be 0 if there was no video, 2472 * no display surface was set, or the value was not determined yet. 2473 * 2474 * @param mp the MediaPlayer associated with this callback 2475 * @param width the width of the video 2476 * @param height the height of the video 2477 */ 2478 public void onVideoSizeChanged(MediaPlayer mp, int width, int height); 2479 } 2480 2481 /** 2482 * Register a callback to be invoked when the video size is 2483 * known or updated. 2484 * 2485 * @param listener the callback that will be run 2486 */ 2487 public void setOnVideoSizeChangedListener(OnVideoSizeChangedListener listener) 2488 { 2489 mOnVideoSizeChangedListener = listener; 2490 } 2491 2492 private OnVideoSizeChangedListener mOnVideoSizeChangedListener; 2493 2494 /** 2495 * Interface definition of a callback to be invoked when a 2496 * timed text is available for display. 2497 */ 2498 public interface OnTimedTextListener 2499 { 2500 /** 2501 * Called to indicate an avaliable timed text 2502 * 2503 * @param mp the MediaPlayer associated with this callback 2504 * @param text the timed text sample which contains the text 2505 * needed to be displayed and the display format. 2506 */ 2507 public void onTimedText(MediaPlayer mp, TimedText text); 2508 } 2509 2510 /** 2511 * Register a callback to be invoked when a timed text is available 2512 * for display. 2513 * 2514 * @param listener the callback that will be run 2515 */ 2516 public void setOnTimedTextListener(OnTimedTextListener listener) 2517 { 2518 mOnTimedTextListener = listener; 2519 } 2520 2521 private OnTimedTextListener mOnTimedTextListener; 2522 2523 /** 2524 * Interface definition of a callback to be invoked when a 2525 * track has data available. 2526 * 2527 * @hide 2528 */ 2529 public interface OnSubtitleDataListener 2530 { 2531 public void onSubtitleData(MediaPlayer mp, SubtitleData data); 2532 } 2533 2534 /** 2535 * Register a callback to be invoked when a track has data available. 2536 * 2537 * @param listener the callback that will be run 2538 * 2539 * @hide 2540 */ 2541 public void setOnSubtitleDataListener(OnSubtitleDataListener listener) 2542 { 2543 mOnSubtitleDataListener = listener; 2544 } 2545 2546 private OnSubtitleDataListener mOnSubtitleDataListener; 2547 2548 /* Do not change these values without updating their counterparts 2549 * in include/media/mediaplayer.h! 2550 */ 2551 /** Unspecified media player error. 2552 * @see android.media.MediaPlayer.OnErrorListener 2553 */ 2554 public static final int MEDIA_ERROR_UNKNOWN = 1; 2555 2556 /** Media server died. In this case, the application must release the 2557 * MediaPlayer object and instantiate a new one. 2558 * @see android.media.MediaPlayer.OnErrorListener 2559 */ 2560 public static final int MEDIA_ERROR_SERVER_DIED = 100; 2561 2562 /** The video is streamed and its container is not valid for progressive 2563 * playback i.e the video's index (e.g moov atom) is not at the start of the 2564 * file. 2565 * @see android.media.MediaPlayer.OnErrorListener 2566 */ 2567 public static final int MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK = 200; 2568 2569 /** File or network related operation errors. */ 2570 public static final int MEDIA_ERROR_IO = -1004; 2571 /** Bitstream is not conforming to the related coding standard or file spec. */ 2572 public static final int MEDIA_ERROR_MALFORMED = -1007; 2573 /** Bitstream is conforming to the related coding standard or file spec, but 2574 * the media framework does not support the feature. */ 2575 public static final int MEDIA_ERROR_UNSUPPORTED = -1010; 2576 /** Some operation takes too long to complete, usually more than 3-5 seconds. */ 2577 public static final int MEDIA_ERROR_TIMED_OUT = -110; 2578 2579 /** 2580 * Interface definition of a callback to be invoked when there 2581 * has been an error during an asynchronous operation (other errors 2582 * will throw exceptions at method call time). 2583 */ 2584 public interface OnErrorListener 2585 { 2586 /** 2587 * Called to indicate an error. 2588 * 2589 * @param mp the MediaPlayer the error pertains to 2590 * @param what the type of error that has occurred: 2591 * <ul> 2592 * <li>{@link #MEDIA_ERROR_UNKNOWN} 2593 * <li>{@link #MEDIA_ERROR_SERVER_DIED} 2594 * </ul> 2595 * @param extra an extra code, specific to the error. Typically 2596 * implementation dependent. 2597 * <ul> 2598 * <li>{@link #MEDIA_ERROR_IO} 2599 * <li>{@link #MEDIA_ERROR_MALFORMED} 2600 * <li>{@link #MEDIA_ERROR_UNSUPPORTED} 2601 * <li>{@link #MEDIA_ERROR_TIMED_OUT} 2602 * </ul> 2603 * @return True if the method handled the error, false if it didn't. 2604 * Returning false, or not having an OnErrorListener at all, will 2605 * cause the OnCompletionListener to be called. 2606 */ 2607 boolean onError(MediaPlayer mp, int what, int extra); 2608 } 2609 2610 /** 2611 * Register a callback to be invoked when an error has happened 2612 * during an asynchronous operation. 2613 * 2614 * @param listener the callback that will be run 2615 */ 2616 public void setOnErrorListener(OnErrorListener listener) 2617 { 2618 mOnErrorListener = listener; 2619 } 2620 2621 private OnErrorListener mOnErrorListener; 2622 2623 2624 /* Do not change these values without updating their counterparts 2625 * in include/media/mediaplayer.h! 2626 */ 2627 /** Unspecified media player info. 2628 * @see android.media.MediaPlayer.OnInfoListener 2629 */ 2630 public static final int MEDIA_INFO_UNKNOWN = 1; 2631 2632 /** The player was started because it was used as the next player for another 2633 * player, which just completed playback. 2634 * @see android.media.MediaPlayer.OnInfoListener 2635 * @hide 2636 */ 2637 public static final int MEDIA_INFO_STARTED_AS_NEXT = 2; 2638 2639 /** The player just pushed the very first video frame for rendering. 2640 * @see android.media.MediaPlayer.OnInfoListener 2641 */ 2642 public static final int MEDIA_INFO_VIDEO_RENDERING_START = 3; 2643 2644 /** The video is too complex for the decoder: it can't decode frames fast 2645 * enough. Possibly only the audio plays fine at this stage. 2646 * @see android.media.MediaPlayer.OnInfoListener 2647 */ 2648 public static final int MEDIA_INFO_VIDEO_TRACK_LAGGING = 700; 2649 2650 /** MediaPlayer is temporarily pausing playback internally in order to 2651 * buffer more data. 2652 * @see android.media.MediaPlayer.OnInfoListener 2653 */ 2654 public static final int MEDIA_INFO_BUFFERING_START = 701; 2655 2656 /** MediaPlayer is resuming playback after filling buffers. 2657 * @see android.media.MediaPlayer.OnInfoListener 2658 */ 2659 public static final int MEDIA_INFO_BUFFERING_END = 702; 2660 2661 /** Bad interleaving means that a media has been improperly interleaved or 2662 * not interleaved at all, e.g has all the video samples first then all the 2663 * audio ones. Video is playing but a lot of disk seeks may be happening. 2664 * @see android.media.MediaPlayer.OnInfoListener 2665 */ 2666 public static final int MEDIA_INFO_BAD_INTERLEAVING = 800; 2667 2668 /** The media cannot be seeked (e.g live stream) 2669 * @see android.media.MediaPlayer.OnInfoListener 2670 */ 2671 public static final int MEDIA_INFO_NOT_SEEKABLE = 801; 2672 2673 /** A new set of metadata is available. 2674 * @see android.media.MediaPlayer.OnInfoListener 2675 */ 2676 public static final int MEDIA_INFO_METADATA_UPDATE = 802; 2677 2678 /** A new set of external-only metadata is available. Used by 2679 * JAVA framework to avoid triggering track scanning. 2680 * @hide 2681 */ 2682 public static final int MEDIA_INFO_EXTERNAL_METADATA_UPDATE = 803; 2683 2684 /** Failed to handle timed text track properly. 2685 * @see android.media.MediaPlayer.OnInfoListener 2686 * 2687 * {@hide} 2688 */ 2689 public static final int MEDIA_INFO_TIMED_TEXT_ERROR = 900; 2690 2691 /** Subtitle track was not supported by the media framework. 2692 * @see android.media.MediaPlayer.OnInfoListener 2693 */ 2694 public static final int MEDIA_INFO_UNSUPPORTED_SUBTITLE = 901; 2695 2696 /** Reading the subtitle track takes too long. 2697 * @see android.media.MediaPlayer.OnInfoListener 2698 */ 2699 public static final int MEDIA_INFO_SUBTITLE_TIMED_OUT = 902; 2700 2701 /** 2702 * Interface definition of a callback to be invoked to communicate some 2703 * info and/or warning about the media or its playback. 2704 */ 2705 public interface OnInfoListener 2706 { 2707 /** 2708 * Called to indicate an info or a warning. 2709 * 2710 * @param mp the MediaPlayer the info pertains to. 2711 * @param what the type of info or warning. 2712 * <ul> 2713 * <li>{@link #MEDIA_INFO_UNKNOWN} 2714 * <li>{@link #MEDIA_INFO_VIDEO_TRACK_LAGGING} 2715 * <li>{@link #MEDIA_INFO_VIDEO_RENDERING_START} 2716 * <li>{@link #MEDIA_INFO_BUFFERING_START} 2717 * <li>{@link #MEDIA_INFO_BUFFERING_END} 2718 * <li>{@link #MEDIA_INFO_BAD_INTERLEAVING} 2719 * <li>{@link #MEDIA_INFO_NOT_SEEKABLE} 2720 * <li>{@link #MEDIA_INFO_METADATA_UPDATE} 2721 * <li>{@link #MEDIA_INFO_UNSUPPORTED_SUBTITLE} 2722 * <li>{@link #MEDIA_INFO_SUBTITLE_TIMED_OUT} 2723 * </ul> 2724 * @param extra an extra code, specific to the info. Typically 2725 * implementation dependent. 2726 * @return True if the method handled the info, false if it didn't. 2727 * Returning false, or not having an OnErrorListener at all, will 2728 * cause the info to be discarded. 2729 */ 2730 boolean onInfo(MediaPlayer mp, int what, int extra); 2731 } 2732 2733 /** 2734 * Register a callback to be invoked when an info/warning is available. 2735 * 2736 * @param listener the callback that will be run 2737 */ 2738 public void setOnInfoListener(OnInfoListener listener) 2739 { 2740 mOnInfoListener = listener; 2741 } 2742 2743 private OnInfoListener mOnInfoListener; 2744 2745 /* 2746 * Test whether a given video scaling mode is supported. 2747 */ 2748 private boolean isVideoScalingModeSupported(int mode) { 2749 return (mode == VIDEO_SCALING_MODE_SCALE_TO_FIT || 2750 mode == VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING); 2751 } 2752 2753 private Context mProxyContext = null; 2754 private ProxyReceiver mProxyReceiver = null; 2755 2756 private void setupProxyListener(Context context) { 2757 IntentFilter filter = new IntentFilter(); 2758 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 2759 mProxyReceiver = new ProxyReceiver(); 2760 mProxyContext = context; 2761 2762 Intent currentProxy = 2763 context.getApplicationContext().registerReceiver(mProxyReceiver, filter); 2764 2765 if (currentProxy != null) { 2766 handleProxyBroadcast(currentProxy); 2767 } 2768 } 2769 2770 private void disableProxyListener() { 2771 if (mProxyReceiver == null) { 2772 return; 2773 } 2774 2775 Context appContext = mProxyContext.getApplicationContext(); 2776 if (appContext != null) { 2777 appContext.unregisterReceiver(mProxyReceiver); 2778 } 2779 2780 mProxyReceiver = null; 2781 mProxyContext = null; 2782 } 2783 2784 private void handleProxyBroadcast(Intent intent) { 2785 ProxyProperties props = 2786 (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 2787 2788 if (props == null || props.getHost() == null) { 2789 updateProxyConfig(null); 2790 } else { 2791 updateProxyConfig(props); 2792 } 2793 } 2794 2795 private class ProxyReceiver extends BroadcastReceiver { 2796 @Override 2797 public void onReceive(Context context, Intent intent) { 2798 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 2799 handleProxyBroadcast(intent); 2800 } 2801 } 2802 } 2803 2804 private native void updateProxyConfig(ProxyProperties props); 2805 2806 /** @hide */ 2807 static class TimeProvider implements MediaPlayer.OnSeekCompleteListener, 2808 MediaTimeProvider { 2809 private static final String TAG = "MTP"; 2810 private static final long MAX_NS_WITHOUT_POSITION_CHECK = 5000000000L; 2811 private static final long MAX_EARLY_CALLBACK_US = 1000; 2812 private static final long TIME_ADJUSTMENT_RATE = 2; /* meaning 1/2 */ 2813 private long mLastTimeUs = 0; 2814 private MediaPlayer mPlayer; 2815 private boolean mPaused = true; 2816 private boolean mStopped = true; 2817 private long mLastReportedTime; 2818 private long mTimeAdjustment; 2819 // since we are expecting only a handful listeners per stream, there is 2820 // no need for log(N) search performance 2821 private MediaTimeProvider.OnMediaTimeListener mListeners[]; 2822 private long mTimes[]; 2823 private long mLastNanoTime; 2824 private Handler mEventHandler; 2825 private boolean mRefresh = false; 2826 private boolean mPausing = false; 2827 private boolean mSeeking = false; 2828 private static final int NOTIFY = 1; 2829 private static final int NOTIFY_TIME = 0; 2830 private static final int REFRESH_AND_NOTIFY_TIME = 1; 2831 private static final int NOTIFY_STOP = 2; 2832 private static final int NOTIFY_SEEK = 3; 2833 private HandlerThread mHandlerThread; 2834 2835 /** @hide */ 2836 public boolean DEBUG = false; 2837 2838 public TimeProvider(MediaPlayer mp) { 2839 mPlayer = mp; 2840 try { 2841 getCurrentTimeUs(true, false); 2842 } catch (IllegalStateException e) { 2843 // we assume starting position 2844 mRefresh = true; 2845 } 2846 2847 Looper looper; 2848 if ((looper = Looper.myLooper()) == null && 2849 (looper = Looper.getMainLooper()) == null) { 2850 // Create our own looper here in case MP was created without one 2851 mHandlerThread = new HandlerThread("MediaPlayerMTPEventThread", 2852 Process.THREAD_PRIORITY_FOREGROUND); 2853 mHandlerThread.start(); 2854 looper = mHandlerThread.getLooper(); 2855 } 2856 mEventHandler = new EventHandler(looper); 2857 2858 mListeners = new MediaTimeProvider.OnMediaTimeListener[0]; 2859 mTimes = new long[0]; 2860 mLastTimeUs = 0; 2861 mTimeAdjustment = 0; 2862 } 2863 2864 private void scheduleNotification(int type, long delayUs) { 2865 // ignore time notifications until seek is handled 2866 if (mSeeking && 2867 (type == NOTIFY_TIME || type == REFRESH_AND_NOTIFY_TIME)) { 2868 return; 2869 } 2870 2871 if (DEBUG) Log.v(TAG, "scheduleNotification " + type + " in " + delayUs); 2872 mEventHandler.removeMessages(NOTIFY); 2873 Message msg = mEventHandler.obtainMessage(NOTIFY, type, 0); 2874 mEventHandler.sendMessageDelayed(msg, (int) (delayUs / 1000)); 2875 } 2876 2877 /** @hide */ 2878 public void close() { 2879 mEventHandler.removeMessages(NOTIFY); 2880 if (mHandlerThread != null) { 2881 mHandlerThread.quitSafely(); 2882 mHandlerThread = null; 2883 } 2884 } 2885 2886 /** @hide */ 2887 protected void finalize() { 2888 if (mHandlerThread != null) { 2889 mHandlerThread.quitSafely(); 2890 } 2891 } 2892 2893 /** @hide */ 2894 public void onPaused(boolean paused) { 2895 synchronized(this) { 2896 if (DEBUG) Log.d(TAG, "onPaused: " + paused); 2897 if (mStopped) { // handle as seek if we were stopped 2898 mStopped = false; 2899 mSeeking = true; 2900 scheduleNotification(NOTIFY_SEEK, 0 /* delay */); 2901 } else { 2902 mPausing = paused; // special handling if player disappeared 2903 mSeeking = false; 2904 scheduleNotification(REFRESH_AND_NOTIFY_TIME, 0 /* delay */); 2905 } 2906 } 2907 } 2908 2909 /** @hide */ 2910 public void onStopped() { 2911 synchronized(this) { 2912 if (DEBUG) Log.d(TAG, "onStopped"); 2913 mPaused = true; 2914 mStopped = true; 2915 mSeeking = false; 2916 scheduleNotification(NOTIFY_STOP, 0 /* delay */); 2917 } 2918 } 2919 2920 /** @hide */ 2921 @Override 2922 public void onSeekComplete(MediaPlayer mp) { 2923 synchronized(this) { 2924 mStopped = false; 2925 mSeeking = true; 2926 scheduleNotification(NOTIFY_SEEK, 0 /* delay */); 2927 } 2928 } 2929 2930 /** @hide */ 2931 public void onNewPlayer() { 2932 if (mRefresh) { 2933 synchronized(this) { 2934 mStopped = false; 2935 mSeeking = true; 2936 scheduleNotification(NOTIFY_SEEK, 0 /* delay */); 2937 } 2938 } 2939 } 2940 2941 private synchronized void notifySeek() { 2942 mSeeking = false; 2943 try { 2944 long timeUs = getCurrentTimeUs(true, false); 2945 if (DEBUG) Log.d(TAG, "onSeekComplete at " + timeUs); 2946 2947 for (MediaTimeProvider.OnMediaTimeListener listener: mListeners) { 2948 if (listener == null) { 2949 break; 2950 } 2951 listener.onSeek(timeUs); 2952 } 2953 } catch (IllegalStateException e) { 2954 // we should not be there, but at least signal pause 2955 if (DEBUG) Log.d(TAG, "onSeekComplete but no player"); 2956 mPausing = true; // special handling if player disappeared 2957 notifyTimedEvent(false /* refreshTime */); 2958 } 2959 } 2960 2961 private synchronized void notifyStop() { 2962 for (MediaTimeProvider.OnMediaTimeListener listener: mListeners) { 2963 if (listener == null) { 2964 break; 2965 } 2966 listener.onStop(); 2967 } 2968 } 2969 2970 private int registerListener(MediaTimeProvider.OnMediaTimeListener listener) { 2971 int i = 0; 2972 for (; i < mListeners.length; i++) { 2973 if (mListeners[i] == listener || mListeners[i] == null) { 2974 break; 2975 } 2976 } 2977 2978 // new listener 2979 if (i >= mListeners.length) { 2980 MediaTimeProvider.OnMediaTimeListener[] newListeners = 2981 new MediaTimeProvider.OnMediaTimeListener[i + 1]; 2982 long[] newTimes = new long[i + 1]; 2983 System.arraycopy(mListeners, 0, newListeners, 0, mListeners.length); 2984 System.arraycopy(mTimes, 0, newTimes, 0, mTimes.length); 2985 mListeners = newListeners; 2986 mTimes = newTimes; 2987 } 2988 2989 if (mListeners[i] == null) { 2990 mListeners[i] = listener; 2991 mTimes[i] = MediaTimeProvider.NO_TIME; 2992 } 2993 return i; 2994 } 2995 2996 public void notifyAt( 2997 long timeUs, MediaTimeProvider.OnMediaTimeListener listener) { 2998 synchronized(this) { 2999 if (DEBUG) Log.d(TAG, "notifyAt " + timeUs); 3000 mTimes[registerListener(listener)] = timeUs; 3001 scheduleNotification(NOTIFY_TIME, 0 /* delay */); 3002 } 3003 } 3004 3005 public void scheduleUpdate(MediaTimeProvider.OnMediaTimeListener listener) { 3006 synchronized(this) { 3007 if (DEBUG) Log.d(TAG, "scheduleUpdate"); 3008 int i = registerListener(listener); 3009 3010 if (mStopped) { 3011 scheduleNotification(NOTIFY_STOP, 0 /* delay */); 3012 } else { 3013 mTimes[i] = 0; 3014 scheduleNotification(NOTIFY_TIME, 0 /* delay */); 3015 } 3016 } 3017 } 3018 3019 public void cancelNotifications( 3020 MediaTimeProvider.OnMediaTimeListener listener) { 3021 synchronized(this) { 3022 int i = 0; 3023 for (; i < mListeners.length; i++) { 3024 if (mListeners[i] == listener) { 3025 System.arraycopy(mListeners, i + 1, 3026 mListeners, i, mListeners.length - i - 1); 3027 System.arraycopy(mTimes, i + 1, 3028 mTimes, i, mTimes.length - i - 1); 3029 mListeners[mListeners.length - 1] = null; 3030 mTimes[mTimes.length - 1] = NO_TIME; 3031 break; 3032 } else if (mListeners[i] == null) { 3033 break; 3034 } 3035 } 3036 3037 scheduleNotification(NOTIFY_TIME, 0 /* delay */); 3038 } 3039 } 3040 3041 private synchronized void notifyTimedEvent(boolean refreshTime) { 3042 // figure out next callback 3043 long nowUs; 3044 try { 3045 nowUs = getCurrentTimeUs(refreshTime, true); 3046 } catch (IllegalStateException e) { 3047 // assume we paused until new player arrives 3048 mRefresh = true; 3049 mPausing = true; // this ensures that call succeeds 3050 nowUs = getCurrentTimeUs(refreshTime, true); 3051 } 3052 long nextTimeUs = nowUs; 3053 3054 if (mSeeking) { 3055 // skip timed-event notifications until seek is complete 3056 return; 3057 } 3058 3059 if (DEBUG) { 3060 StringBuilder sb = new StringBuilder(); 3061 sb.append("notifyTimedEvent(").append(mLastTimeUs).append(" -> ") 3062 .append(nowUs).append(") from {"); 3063 boolean first = true; 3064 for (long time: mTimes) { 3065 if (time == NO_TIME) { 3066 continue; 3067 } 3068 if (!first) sb.append(", "); 3069 sb.append(time); 3070 first = false; 3071 } 3072 sb.append("}"); 3073 Log.d(TAG, sb.toString()); 3074 } 3075 3076 Vector<MediaTimeProvider.OnMediaTimeListener> activatedListeners = 3077 new Vector<MediaTimeProvider.OnMediaTimeListener>(); 3078 for (int ix = 0; ix < mTimes.length; ix++) { 3079 if (mListeners[ix] == null) { 3080 break; 3081 } 3082 if (mTimes[ix] <= NO_TIME) { 3083 // ignore, unless we were stopped 3084 } else if (mTimes[ix] <= nowUs + MAX_EARLY_CALLBACK_US) { 3085 activatedListeners.add(mListeners[ix]); 3086 if (DEBUG) Log.d(TAG, "removed"); 3087 mTimes[ix] = NO_TIME; 3088 } else if (nextTimeUs == nowUs || mTimes[ix] < nextTimeUs) { 3089 nextTimeUs = mTimes[ix]; 3090 } 3091 } 3092 3093 if (nextTimeUs > nowUs && !mPaused) { 3094 // schedule callback at nextTimeUs 3095 if (DEBUG) Log.d(TAG, "scheduling for " + nextTimeUs + " and " + nowUs); 3096 scheduleNotification(NOTIFY_TIME, nextTimeUs - nowUs); 3097 } else { 3098 mEventHandler.removeMessages(NOTIFY); 3099 // no more callbacks 3100 } 3101 3102 for (MediaTimeProvider.OnMediaTimeListener listener: activatedListeners) { 3103 listener.onTimedEvent(nowUs); 3104 } 3105 } 3106 3107 private long getEstimatedTime(long nanoTime, boolean monotonic) { 3108 if (mPaused) { 3109 mLastReportedTime = mLastTimeUs + mTimeAdjustment; 3110 } else { 3111 long timeSinceRead = (nanoTime - mLastNanoTime) / 1000; 3112 mLastReportedTime = mLastTimeUs + timeSinceRead; 3113 if (mTimeAdjustment > 0) { 3114 long adjustment = 3115 mTimeAdjustment - timeSinceRead / TIME_ADJUSTMENT_RATE; 3116 if (adjustment <= 0) { 3117 mTimeAdjustment = 0; 3118 } else { 3119 mLastReportedTime += adjustment; 3120 } 3121 } 3122 } 3123 return mLastReportedTime; 3124 } 3125 3126 public long getCurrentTimeUs(boolean refreshTime, boolean monotonic) 3127 throws IllegalStateException { 3128 synchronized (this) { 3129 // we always refresh the time when the paused-state changes, because 3130 // we expect to have received the pause-change event delayed. 3131 if (mPaused && !refreshTime) { 3132 return mLastReportedTime; 3133 } 3134 3135 long nanoTime = System.nanoTime(); 3136 if (refreshTime || 3137 nanoTime >= mLastNanoTime + MAX_NS_WITHOUT_POSITION_CHECK) { 3138 try { 3139 mLastTimeUs = mPlayer.getCurrentPosition() * 1000; 3140 mPaused = !mPlayer.isPlaying(); 3141 if (DEBUG) Log.v(TAG, (mPaused ? "paused" : "playing") + " at " + mLastTimeUs); 3142 } catch (IllegalStateException e) { 3143 if (mPausing) { 3144 // if we were pausing, get last estimated timestamp 3145 mPausing = false; 3146 getEstimatedTime(nanoTime, monotonic); 3147 mPaused = true; 3148 if (DEBUG) Log.d(TAG, "illegal state, but pausing: estimating at " + mLastReportedTime); 3149 return mLastReportedTime; 3150 } 3151 // TODO get time when prepared 3152 throw e; 3153 } 3154 mLastNanoTime = nanoTime; 3155 if (monotonic && mLastTimeUs < mLastReportedTime) { 3156 /* have to adjust time */ 3157 mTimeAdjustment = mLastReportedTime - mLastTimeUs; 3158 if (mTimeAdjustment > 1000000) { 3159 // schedule seeked event if time jumped significantly 3160 // TODO: do this properly by introducing an exception 3161 mStopped = false; 3162 mSeeking = true; 3163 scheduleNotification(NOTIFY_SEEK, 0 /* delay */); 3164 } 3165 } else { 3166 mTimeAdjustment = 0; 3167 } 3168 } 3169 3170 return getEstimatedTime(nanoTime, monotonic); 3171 } 3172 } 3173 3174 private class EventHandler extends Handler { 3175 public EventHandler(Looper looper) { 3176 super(looper); 3177 } 3178 3179 @Override 3180 public void handleMessage(Message msg) { 3181 if (msg.what == NOTIFY) { 3182 switch (msg.arg1) { 3183 case NOTIFY_TIME: 3184 notifyTimedEvent(false /* refreshTime */); 3185 break; 3186 case REFRESH_AND_NOTIFY_TIME: 3187 notifyTimedEvent(true /* refreshTime */); 3188 break; 3189 case NOTIFY_STOP: 3190 notifyStop(); 3191 break; 3192 case NOTIFY_SEEK: 3193 notifySeek(); 3194 break; 3195 } 3196 } 3197 } 3198 } 3199 } 3200} 3201