MediaPlayer.java revision 6090995951c6e2e4dcf38102f01793f8a94166e1
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.Looper; 31import android.os.Message; 32import android.os.Parcel; 33import android.os.Parcelable; 34import android.os.Process; 35import android.os.PowerManager; 36import android.util.Log; 37import android.view.Surface; 38import android.view.SurfaceHolder; 39import android.graphics.SurfaceTexture; 40import android.media.AudioManager; 41import android.media.MediaFormat; 42import android.media.MediaTimeProvider; 43import android.media.SubtitleController; 44import android.media.SubtitleData; 45 46import java.io.File; 47import java.io.FileDescriptor; 48import java.io.FileInputStream; 49import java.io.IOException; 50import java.io.InputStream; 51import java.lang.Runnable; 52import java.net.InetSocketAddress; 53import java.util.Map; 54import java.util.Scanner; 55import java.util.Set; 56import java.util.Vector; 57import java.lang.ref.WeakReference; 58 59/** 60 * MediaPlayer class can be used to control playback 61 * of audio/video files and streams. An example on how to use the methods in 62 * this class can be found in {@link android.widget.VideoView}. 63 * 64 * <p>Topics covered here are: 65 * <ol> 66 * <li><a href="#StateDiagram">State Diagram</a> 67 * <li><a href="#Valid_and_Invalid_States">Valid and Invalid States</a> 68 * <li><a href="#Permissions">Permissions</a> 69 * <li><a href="#Callbacks">Register informational and error callbacks</a> 70 * </ol> 71 * 72 * <div class="special reference"> 73 * <h3>Developer Guides</h3> 74 * <p>For more information about how to use MediaPlayer, read the 75 * <a href="{@docRoot}guide/topics/media/mediaplayer.html">Media Playback</a> developer guide.</p> 76 * </div> 77 * 78 * <a name="StateDiagram"></a> 79 * <h3>State Diagram</h3> 80 * 81 * <p>Playback control of audio/video files and streams is managed as a state 82 * machine. The following diagram shows the life cycle and the states of a 83 * MediaPlayer object driven by the supported playback control operations. 84 * The ovals represent the states a MediaPlayer object may reside 85 * in. The arcs represent the playback control operations that drive the object 86 * state transition. There are two types of arcs. The arcs with a single arrow 87 * head represent synchronous method calls, while those with 88 * a double arrow head represent asynchronous method calls.</p> 89 * 90 * <p><img src="../../../images/mediaplayer_state_diagram.gif" 91 * alt="MediaPlayer State diagram" 92 * border="0" /></p> 93 * 94 * <p>From this state diagram, one can see that a MediaPlayer object has the 95 * following states:</p> 96 * <ul> 97 * <li>When a MediaPlayer object is just created using <code>new</code> or 98 * after {@link #reset()} is called, it is in the <em>Idle</em> state; and after 99 * {@link #release()} is called, it is in the <em>End</em> state. Between these 100 * two states is the life cycle of the MediaPlayer object. 101 * <ul> 102 * <li>There is a subtle but important difference between a newly constructed 103 * MediaPlayer object and the MediaPlayer object after {@link #reset()} 104 * is called. It is a programming error to invoke methods such 105 * as {@link #getCurrentPosition()}, 106 * {@link #getDuration()}, {@link #getVideoHeight()}, 107 * {@link #getVideoWidth()}, {@link #setAudioStreamType(int)}, 108 * {@link #setLooping(boolean)}, 109 * {@link #setVolume(float, float)}, {@link #pause()}, {@link #start()}, 110 * {@link #stop()}, {@link #seekTo(int)}, {@link #prepare()} or 111 * {@link #prepareAsync()} in the <em>Idle</em> state for both cases. If any of these 112 * methods is called right after a MediaPlayer object is constructed, 113 * the user supplied callback method OnErrorListener.onError() won't be 114 * called by the internal player engine and the object state remains 115 * unchanged; but if these methods are called right after {@link #reset()}, 116 * the user supplied callback method OnErrorListener.onError() will be 117 * invoked by the internal player engine and the object will be 118 * transfered to the <em>Error</em> state. </li> 119 * <li>It is also recommended that once 120 * a MediaPlayer object is no longer being used, call {@link #release()} immediately 121 * so that resources used by the internal player engine associated with the 122 * MediaPlayer object can be released immediately. Resource may include 123 * singleton resources such as hardware acceleration components and 124 * failure to call {@link #release()} may cause subsequent instances of 125 * MediaPlayer objects to fallback to software implementations or fail 126 * altogether. Once the MediaPlayer 127 * object is in the <em>End</em> state, it can no longer be used and 128 * there is no way to bring it back to any other state. </li> 129 * <li>Furthermore, 130 * the MediaPlayer objects created using <code>new</code> is in the 131 * <em>Idle</em> state, while those created with one 132 * of the overloaded convenient <code>create</code> methods are <em>NOT</em> 133 * in the <em>Idle</em> state. In fact, the objects are in the <em>Prepared</em> 134 * state if the creation using <code>create</code> method is successful. 135 * </li> 136 * </ul> 137 * </li> 138 * <li>In general, some playback control operation may fail due to various 139 * reasons, such as unsupported audio/video format, poorly interleaved 140 * audio/video, resolution too high, streaming timeout, and the like. 141 * Thus, error reporting and recovery is an important concern under 142 * these circumstances. Sometimes, due to programming errors, invoking a playback 143 * control operation in an invalid state may also occur. Under all these 144 * error conditions, the internal player engine invokes a user supplied 145 * OnErrorListener.onError() method if an OnErrorListener has been 146 * registered beforehand via 147 * {@link #setOnErrorListener(android.media.MediaPlayer.OnErrorListener)}. 148 * <ul> 149 * <li>It is important to note that once an error occurs, the 150 * MediaPlayer object enters the <em>Error</em> state (except as noted 151 * above), even if an error listener has not been registered by the application.</li> 152 * <li>In order to reuse a MediaPlayer object that is in the <em> 153 * Error</em> state and recover from the error, 154 * {@link #reset()} can be called to restore the object to its <em>Idle</em> 155 * state.</li> 156 * <li>It is good programming practice to have your application 157 * register a OnErrorListener to look out for error notifications from 158 * the internal player engine.</li> 159 * <li>IllegalStateException is 160 * thrown to prevent programming errors such as calling {@link #prepare()}, 161 * {@link #prepareAsync()}, or one of the overloaded <code>setDataSource 162 * </code> methods in an invalid state. </li> 163 * </ul> 164 * </li> 165 * <li>Calling 166 * {@link #setDataSource(FileDescriptor)}, or 167 * {@link #setDataSource(String)}, or 168 * {@link #setDataSource(Context, Uri)}, or 169 * {@link #setDataSource(FileDescriptor, long, long)} transfers a 170 * MediaPlayer object in the <em>Idle</em> state to the 171 * <em>Initialized</em> state. 172 * <ul> 173 * <li>An IllegalStateException is thrown if 174 * setDataSource() is called in any other state.</li> 175 * <li>It is good programming 176 * practice to always look out for <code>IllegalArgumentException</code> 177 * and <code>IOException</code> that may be thrown from the overloaded 178 * <code>setDataSource</code> methods.</li> 179 * </ul> 180 * </li> 181 * <li>A MediaPlayer object must first enter the <em>Prepared</em> state 182 * before playback can be started. 183 * <ul> 184 * <li>There are two ways (synchronous vs. 185 * asynchronous) that the <em>Prepared</em> state can be reached: 186 * either a call to {@link #prepare()} (synchronous) which 187 * transfers the object to the <em>Prepared</em> state once the method call 188 * returns, or a call to {@link #prepareAsync()} (asynchronous) which 189 * first transfers the object to the <em>Preparing</em> state after the 190 * call returns (which occurs almost right way) while the internal 191 * player engine continues working on the rest of preparation work 192 * until the preparation work completes. When the preparation completes or when {@link #prepare()} call returns, 193 * the internal player engine then calls a user supplied callback method, 194 * onPrepared() of the OnPreparedListener interface, if an 195 * OnPreparedListener is registered beforehand via {@link 196 * #setOnPreparedListener(android.media.MediaPlayer.OnPreparedListener)}.</li> 197 * <li>It is important to note that 198 * the <em>Preparing</em> state is a transient state, and the behavior 199 * of calling any method with side effect while a MediaPlayer object is 200 * in the <em>Preparing</em> state is undefined.</li> 201 * <li>An IllegalStateException is 202 * thrown if {@link #prepare()} or {@link #prepareAsync()} is called in 203 * any other state.</li> 204 * <li>While in the <em>Prepared</em> state, properties 205 * such as audio/sound volume, screenOnWhilePlaying, looping can be 206 * adjusted by invoking the corresponding set methods.</li> 207 * </ul> 208 * </li> 209 * <li>To start the playback, {@link #start()} must be called. After 210 * {@link #start()} returns successfully, the MediaPlayer object is in the 211 * <em>Started</em> state. {@link #isPlaying()} can be called to test 212 * whether the MediaPlayer object is in the <em>Started</em> state. 213 * <ul> 214 * <li>While in the <em>Started</em> state, the internal player engine calls 215 * a user supplied OnBufferingUpdateListener.onBufferingUpdate() callback 216 * method if a OnBufferingUpdateListener has been registered beforehand 217 * via {@link #setOnBufferingUpdateListener(OnBufferingUpdateListener)}. 218 * This callback allows applications to keep track of the buffering status 219 * while streaming audio/video.</li> 220 * <li>Calling {@link #start()} has not effect 221 * on a MediaPlayer object that is already in the <em>Started</em> state.</li> 222 * </ul> 223 * </li> 224 * <li>Playback can be paused and stopped, and the current playback position 225 * can be adjusted. Playback can be paused via {@link #pause()}. When the call to 226 * {@link #pause()} returns, the MediaPlayer object enters the 227 * <em>Paused</em> state. Note that the transition from the <em>Started</em> 228 * state to the <em>Paused</em> state and vice versa happens 229 * asynchronously in the player engine. It may take some time before 230 * the state is updated in calls to {@link #isPlaying()}, and it can be 231 * a number of seconds in the case of streamed content. 232 * <ul> 233 * <li>Calling {@link #start()} to resume playback for a paused 234 * MediaPlayer object, and the resumed playback 235 * position is the same as where it was paused. When the call to 236 * {@link #start()} returns, the paused MediaPlayer object goes back to 237 * the <em>Started</em> state.</li> 238 * <li>Calling {@link #pause()} has no effect on 239 * a MediaPlayer object that is already in the <em>Paused</em> state.</li> 240 * </ul> 241 * </li> 242 * <li>Calling {@link #stop()} stops playback and causes a 243 * MediaPlayer in the <em>Started</em>, <em>Paused</em>, <em>Prepared 244 * </em> or <em>PlaybackCompleted</em> state to enter the 245 * <em>Stopped</em> state. 246 * <ul> 247 * <li>Once in the <em>Stopped</em> state, playback cannot be started 248 * until {@link #prepare()} or {@link #prepareAsync()} are called to set 249 * the MediaPlayer object to the <em>Prepared</em> state again.</li> 250 * <li>Calling {@link #stop()} has no effect on a MediaPlayer 251 * object that is already in the <em>Stopped</em> state.</li> 252 * </ul> 253 * </li> 254 * <li>The playback position can be adjusted with a call to 255 * {@link #seekTo(int)}. 256 * <ul> 257 * <li>Although the asynchronuous {@link #seekTo(int)} 258 * call returns right way, the actual seek operation may take a while to 259 * finish, especially for audio/video being streamed. When the actual 260 * seek operation completes, the internal player engine calls a user 261 * supplied OnSeekComplete.onSeekComplete() if an OnSeekCompleteListener 262 * has been registered beforehand via 263 * {@link #setOnSeekCompleteListener(OnSeekCompleteListener)}.</li> 264 * <li>Please 265 * note that {@link #seekTo(int)} can also be called in the other states, 266 * such as <em>Prepared</em>, <em>Paused</em> and <em>PlaybackCompleted 267 * </em> state.</li> 268 * <li>Furthermore, the actual current playback position 269 * can be retrieved with a call to {@link #getCurrentPosition()}, which 270 * is helpful for applications such as a Music player that need to keep 271 * track of the playback progress.</li> 272 * </ul> 273 * </li> 274 * <li>When the playback reaches the end of stream, the playback completes. 275 * <ul> 276 * <li>If the looping mode was being set to <var>true</var>with 277 * {@link #setLooping(boolean)}, the MediaPlayer object shall remain in 278 * the <em>Started</em> state.</li> 279 * <li>If the looping mode was set to <var>false 280 * </var>, the player engine calls a user supplied callback method, 281 * OnCompletion.onCompletion(), if a OnCompletionListener is registered 282 * beforehand via {@link #setOnCompletionListener(OnCompletionListener)}. 283 * The invoke of the callback signals that the object is now in the <em> 284 * PlaybackCompleted</em> state.</li> 285 * <li>While in the <em>PlaybackCompleted</em> 286 * state, calling {@link #start()} can restart the playback from the 287 * beginning of the audio/video source.</li> 288 * </ul> 289 * 290 * 291 * <a name="Valid_and_Invalid_States"></a> 292 * <h3>Valid and invalid states</h3> 293 * 294 * <table border="0" cellspacing="0" cellpadding="0"> 295 * <tr><td>Method Name </p></td> 296 * <td>Valid Sates </p></td> 297 * <td>Invalid States </p></td> 298 * <td>Comments </p></td></tr> 299 * <tr><td>attachAuxEffect </p></td> 300 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted} </p></td> 301 * <td>{Idle, Error} </p></td> 302 * <td>This method must be called after setDataSource. 303 * Calling it does not change the object state. </p></td></tr> 304 * <tr><td>getAudioSessionId </p></td> 305 * <td>any </p></td> 306 * <td>{} </p></td> 307 * <td>This method can be called in any state and calling it does not change 308 * the object state. </p></td></tr> 309 * <tr><td>getCurrentPosition </p></td> 310 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 311 * PlaybackCompleted} </p></td> 312 * <td>{Error}</p></td> 313 * <td>Successful invoke of this method in a valid state does not change the 314 * state. Calling this method in an invalid state transfers the object 315 * to the <em>Error</em> state. </p></td></tr> 316 * <tr><td>getDuration </p></td> 317 * <td>{Prepared, Started, Paused, Stopped, PlaybackCompleted} </p></td> 318 * <td>{Idle, Initialized, Error} </p></td> 319 * <td>Successful invoke of this method in a valid state does not change the 320 * state. Calling this method in an invalid state transfers the object 321 * to the <em>Error</em> state. </p></td></tr> 322 * <tr><td>getVideoHeight </p></td> 323 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 324 * PlaybackCompleted}</p></td> 325 * <td>{Error}</p></td> 326 * <td>Successful invoke of this method in a valid state does not change the 327 * state. Calling this method in an invalid state transfers the object 328 * to the <em>Error</em> state. </p></td></tr> 329 * <tr><td>getVideoWidth </p></td> 330 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 331 * PlaybackCompleted}</p></td> 332 * <td>{Error}</p></td> 333 * <td>Successful invoke of this method in a valid state does not change 334 * the state. Calling this method in an invalid state transfers the 335 * object to the <em>Error</em> state. </p></td></tr> 336 * <tr><td>isPlaying </p></td> 337 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 338 * PlaybackCompleted}</p></td> 339 * <td>{Error}</p></td> 340 * <td>Successful invoke of this method in a valid state does not change 341 * the state. Calling this method in an invalid state transfers the 342 * object to the <em>Error</em> state. </p></td></tr> 343 * <tr><td>pause </p></td> 344 * <td>{Started, Paused, PlaybackCompleted}</p></td> 345 * <td>{Idle, Initialized, Prepared, Stopped, Error}</p></td> 346 * <td>Successful invoke of this method in a valid state transfers the 347 * object to the <em>Paused</em> state. Calling this method in an 348 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 349 * <tr><td>prepare </p></td> 350 * <td>{Initialized, Stopped} </p></td> 351 * <td>{Idle, Prepared, Started, Paused, PlaybackCompleted, Error} </p></td> 352 * <td>Successful invoke of this method in a valid state transfers the 353 * object to the <em>Prepared</em> state. Calling this method in an 354 * invalid state throws an IllegalStateException.</p></td></tr> 355 * <tr><td>prepareAsync </p></td> 356 * <td>{Initialized, Stopped} </p></td> 357 * <td>{Idle, Prepared, Started, Paused, PlaybackCompleted, Error} </p></td> 358 * <td>Successful invoke of this method in a valid state transfers the 359 * object to the <em>Preparing</em> state. Calling this method in an 360 * invalid state throws an IllegalStateException.</p></td></tr> 361 * <tr><td>release </p></td> 362 * <td>any </p></td> 363 * <td>{} </p></td> 364 * <td>After {@link #release()}, the object is no longer available. </p></td></tr> 365 * <tr><td>reset </p></td> 366 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 367 * PlaybackCompleted, Error}</p></td> 368 * <td>{}</p></td> 369 * <td>After {@link #reset()}, the object is like being just created.</p></td></tr> 370 * <tr><td>seekTo </p></td> 371 * <td>{Prepared, Started, Paused, PlaybackCompleted} </p></td> 372 * <td>{Idle, Initialized, Stopped, Error}</p></td> 373 * <td>Successful invoke of this method in a valid state does not change 374 * the state. Calling this method in an invalid state transfers the 375 * object to the <em>Error</em> state. </p></td></tr> 376 * <tr><td>setAudioSessionId </p></td> 377 * <td>{Idle} </p></td> 378 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted, 379 * Error} </p></td> 380 * <td>This method must be called in idle state as the audio session ID must be known before 381 * calling setDataSource. Calling it does not change the object state. </p></td></tr> 382 * <tr><td>setAudioStreamType </p></td> 383 * <td>{Idle, Initialized, Stopped, Prepared, Started, Paused, 384 * PlaybackCompleted}</p></td> 385 * <td>{Error}</p></td> 386 * <td>Successful invoke of this method does not change the state. In order for the 387 * target audio stream type to become effective, this method must be called before 388 * prepare() or prepareAsync().</p></td></tr> 389 * <tr><td>setAuxEffectSendLevel </p></td> 390 * <td>any</p></td> 391 * <td>{} </p></td> 392 * <td>Calling this method does not change the object state. </p></td></tr> 393 * <tr><td>setDataSource </p></td> 394 * <td>{Idle} </p></td> 395 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted, 396 * Error} </p></td> 397 * <td>Successful invoke of this method in a valid state transfers the 398 * object to the <em>Initialized</em> state. Calling this method in an 399 * invalid state throws an IllegalStateException.</p></td></tr> 400 * <tr><td>setDisplay </p></td> 401 * <td>any </p></td> 402 * <td>{} </p></td> 403 * <td>This method can be called in any state and calling it does not change 404 * the object state. </p></td></tr> 405 * <tr><td>setSurface </p></td> 406 * <td>any </p></td> 407 * <td>{} </p></td> 408 * <td>This method can be called in any state and calling it does not change 409 * the object state. </p></td></tr> 410 * <tr><td>setVideoScalingMode </p></td> 411 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted} </p></td> 412 * <td>{Idle, Error}</p></td> 413 * <td>Successful invoke of this method does not change the state.</p></td></tr> 414 * <tr><td>setLooping </p></td> 415 * <td>{Idle, Initialized, Stopped, Prepared, Started, Paused, 416 * PlaybackCompleted}</p></td> 417 * <td>{Error}</p></td> 418 * <td>Successful invoke of this method in a valid state does not change 419 * the state. Calling this method in an 420 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 421 * <tr><td>isLooping </p></td> 422 * <td>any </p></td> 423 * <td>{} </p></td> 424 * <td>This method can be called in any state and calling it does not change 425 * the object state. </p></td></tr> 426 * <tr><td>setOnBufferingUpdateListener </p></td> 427 * <td>any </p></td> 428 * <td>{} </p></td> 429 * <td>This method can be called in any state and calling it does not change 430 * the object state. </p></td></tr> 431 * <tr><td>setOnCompletionListener </p></td> 432 * <td>any </p></td> 433 * <td>{} </p></td> 434 * <td>This method can be called in any state and calling it does not change 435 * the object state. </p></td></tr> 436 * <tr><td>setOnErrorListener </p></td> 437 * <td>any </p></td> 438 * <td>{} </p></td> 439 * <td>This method can be called in any state and calling it does not change 440 * the object state. </p></td></tr> 441 * <tr><td>setOnPreparedListener </p></td> 442 * <td>any </p></td> 443 * <td>{} </p></td> 444 * <td>This method can be called in any state and calling it does not change 445 * the object state. </p></td></tr> 446 * <tr><td>setOnSeekCompleteListener </p></td> 447 * <td>any </p></td> 448 * <td>{} </p></td> 449 * <td>This method can be called in any state and calling it does not change 450 * the object state. </p></td></tr> 451 * <tr><td>setScreenOnWhilePlaying</></td> 452 * <td>any </p></td> 453 * <td>{} </p></td> 454 * <td>This method can be called in any state and calling it does not change 455 * the object state. </p></td></tr> 456 * <tr><td>setVolume </p></td> 457 * <td>{Idle, Initialized, Stopped, Prepared, Started, Paused, 458 * PlaybackCompleted}</p></td> 459 * <td>{Error}</p></td> 460 * <td>Successful invoke of this method does not change the state. 461 * <tr><td>setWakeMode </p></td> 462 * <td>any </p></td> 463 * <td>{} </p></td> 464 * <td>This method can be called in any state and calling it does not change 465 * the object state.</p></td></tr> 466 * <tr><td>start </p></td> 467 * <td>{Prepared, Started, Paused, PlaybackCompleted}</p></td> 468 * <td>{Idle, Initialized, Stopped, Error}</p></td> 469 * <td>Successful invoke of this method in a valid state transfers the 470 * object to the <em>Started</em> state. Calling this method in an 471 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 472 * <tr><td>stop </p></td> 473 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 474 * <td>{Idle, Initialized, Error}</p></td> 475 * <td>Successful invoke of this method in a valid state transfers the 476 * object to the <em>Stopped</em> state. Calling this method in an 477 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 478 * <tr><td>getTrackInfo </p></td> 479 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 480 * <td>{Idle, Initialized, Error}</p></td> 481 * <td>Successful invoke of this method does not change the state.</p></td></tr> 482 * <tr><td>addTimedTextSource </p></td> 483 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 484 * <td>{Idle, Initialized, Error}</p></td> 485 * <td>Successful invoke of this method does not change the state.</p></td></tr> 486 * <tr><td>selectTrack </p></td> 487 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 488 * <td>{Idle, Initialized, Error}</p></td> 489 * <td>Successful invoke of this method does not change the state.</p></td></tr> 490 * <tr><td>deselectTrack </p></td> 491 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 492 * <td>{Idle, Initialized, Error}</p></td> 493 * <td>Successful invoke of this method does not change the state.</p></td></tr> 494 * 495 * </table> 496 * 497 * <a name="Permissions"></a> 498 * <h3>Permissions</h3> 499 * <p>One may need to declare a corresponding WAKE_LOCK permission {@link 500 * android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 501 * element. 502 * 503 * <p>This class requires the {@link android.Manifest.permission#INTERNET} permission 504 * when used with network-based content. 505 * 506 * <a name="Callbacks"></a> 507 * <h3>Callbacks</h3> 508 * <p>Applications may want to register for informational and error 509 * events in order to be informed of some internal state update and 510 * possible runtime errors during playback or streaming. Registration for 511 * these events is done by properly setting the appropriate listeners (via calls 512 * to 513 * {@link #setOnPreparedListener(OnPreparedListener)}setOnPreparedListener, 514 * {@link #setOnVideoSizeChangedListener(OnVideoSizeChangedListener)}setOnVideoSizeChangedListener, 515 * {@link #setOnSeekCompleteListener(OnSeekCompleteListener)}setOnSeekCompleteListener, 516 * {@link #setOnCompletionListener(OnCompletionListener)}setOnCompletionListener, 517 * {@link #setOnBufferingUpdateListener(OnBufferingUpdateListener)}setOnBufferingUpdateListener, 518 * {@link #setOnInfoListener(OnInfoListener)}setOnInfoListener, 519 * {@link #setOnErrorListener(OnErrorListener)}setOnErrorListener, etc). 520 * In order to receive the respective callback 521 * associated with these listeners, applications are required to create 522 * MediaPlayer objects on a thread with its own Looper running (main UI 523 * thread by default has a Looper running). 524 * 525 */ 526public class MediaPlayer implements SubtitleController.Listener 527{ 528 /** 529 Constant to retrieve only the new metadata since the last 530 call. 531 // FIXME: unhide. 532 // FIXME: add link to getMetadata(boolean, boolean) 533 {@hide} 534 */ 535 public static final boolean METADATA_UPDATE_ONLY = true; 536 537 /** 538 Constant to retrieve all the metadata. 539 // FIXME: unhide. 540 // FIXME: add link to getMetadata(boolean, boolean) 541 {@hide} 542 */ 543 public static final boolean METADATA_ALL = false; 544 545 /** 546 Constant to enable the metadata filter during retrieval. 547 // FIXME: unhide. 548 // FIXME: add link to getMetadata(boolean, boolean) 549 {@hide} 550 */ 551 public static final boolean APPLY_METADATA_FILTER = true; 552 553 /** 554 Constant to disable the metadata filter during retrieval. 555 // FIXME: unhide. 556 // FIXME: add link to getMetadata(boolean, boolean) 557 {@hide} 558 */ 559 public static final boolean BYPASS_METADATA_FILTER = false; 560 561 static { 562 System.loadLibrary("media_jni"); 563 native_init(); 564 } 565 566 private final static String TAG = "MediaPlayer"; 567 // Name of the remote interface for the media player. Must be kept 568 // in sync with the 2nd parameter of the IMPLEMENT_META_INTERFACE 569 // macro invocation in IMediaPlayer.cpp 570 private final static String IMEDIA_PLAYER = "android.media.IMediaPlayer"; 571 572 private int mNativeContext; // accessed by native methods 573 private int mNativeSurfaceTexture; // accessed by native methods 574 private int mListenerContext; // accessed by native methods 575 private SurfaceHolder mSurfaceHolder; 576 private EventHandler mEventHandler; 577 private PowerManager.WakeLock mWakeLock = null; 578 private boolean mScreenOnWhilePlaying; 579 private boolean mStayAwake; 580 581 /** 582 * Default constructor. Consider using one of the create() methods for 583 * synchronously instantiating a MediaPlayer from a Uri or resource. 584 * <p>When done with the MediaPlayer, you should call {@link #release()}, 585 * to free the resources. If not released, too many MediaPlayer instances may 586 * result in an exception.</p> 587 */ 588 public MediaPlayer() { 589 590 Looper looper; 591 if ((looper = Looper.myLooper()) != null) { 592 mEventHandler = new EventHandler(this, looper); 593 } else if ((looper = Looper.getMainLooper()) != null) { 594 mEventHandler = new EventHandler(this, looper); 595 } else { 596 mEventHandler = null; 597 } 598 599 mTimeProvider = new TimeProvider(this); 600 mOutOfBandSubtitleTracks = new Vector<SubtitleTrack>(); 601 mOpenSubtitleSources = new Vector<InputStream>(); 602 mInbandSubtitleTracks = new SubtitleTrack[0]; 603 604 /* Native setup requires a weak reference to our object. 605 * It's easier to create it here than in C++. 606 */ 607 native_setup(new WeakReference<MediaPlayer>(this)); 608 } 609 610 /* 611 * Update the MediaPlayer SurfaceTexture. 612 * Call after setting a new display surface. 613 */ 614 private native void _setVideoSurface(Surface surface); 615 616 /* Do not change these values (starting with INVOKE_ID) without updating 617 * their counterparts in include/media/mediaplayer.h! 618 */ 619 private static final int INVOKE_ID_GET_TRACK_INFO = 1; 620 private static final int INVOKE_ID_ADD_EXTERNAL_SOURCE = 2; 621 private static final int INVOKE_ID_ADD_EXTERNAL_SOURCE_FD = 3; 622 private static final int INVOKE_ID_SELECT_TRACK = 4; 623 private static final int INVOKE_ID_DESELECT_TRACK = 5; 624 private static final int INVOKE_ID_SET_VIDEO_SCALE_MODE = 6; 625 626 /** 627 * Create a request parcel which can be routed to the native media 628 * player using {@link #invoke(Parcel, Parcel)}. The Parcel 629 * returned has the proper InterfaceToken set. The caller should 630 * not overwrite that token, i.e it can only append data to the 631 * Parcel. 632 * 633 * @return A parcel suitable to hold a request for the native 634 * player. 635 * {@hide} 636 */ 637 public Parcel newRequest() { 638 Parcel parcel = Parcel.obtain(); 639 parcel.writeInterfaceToken(IMEDIA_PLAYER); 640 return parcel; 641 } 642 643 /** 644 * Invoke a generic method on the native player using opaque 645 * parcels for the request and reply. Both payloads' format is a 646 * convention between the java caller and the native player. 647 * Must be called after setDataSource to make sure a native player 648 * exists. On failure, a RuntimeException is thrown. 649 * 650 * @param request Parcel with the data for the extension. The 651 * caller must use {@link #newRequest()} to get one. 652 * 653 * @param reply Output parcel with the data returned by the 654 * native player. 655 * {@hide} 656 */ 657 public void invoke(Parcel request, Parcel reply) { 658 int retcode = native_invoke(request, reply); 659 reply.setDataPosition(0); 660 if (retcode != 0) { 661 throw new RuntimeException("failure code: " + retcode); 662 } 663 } 664 665 /** 666 * Sets the {@link SurfaceHolder} to use for displaying the video 667 * portion of the media. 668 * 669 * Either a surface holder or surface must be set if a display or video sink 670 * is needed. Not calling this method or {@link #setSurface(Surface)} 671 * when playing back a video will result in only the audio track being played. 672 * A null surface holder or surface will result in only the audio track being 673 * played. 674 * 675 * @param sh the SurfaceHolder to use for video display 676 */ 677 public void setDisplay(SurfaceHolder sh) { 678 mSurfaceHolder = sh; 679 Surface surface; 680 if (sh != null) { 681 surface = sh.getSurface(); 682 } else { 683 surface = null; 684 } 685 _setVideoSurface(surface); 686 updateSurfaceScreenOn(); 687 } 688 689 /** 690 * Sets the {@link Surface} to be used as the sink for the video portion of 691 * the media. This is similar to {@link #setDisplay(SurfaceHolder)}, but 692 * does not support {@link #setScreenOnWhilePlaying(boolean)}. Setting a 693 * Surface will un-set any Surface or SurfaceHolder that was previously set. 694 * A null surface will result in only the audio track being played. 695 * 696 * If the Surface sends frames to a {@link SurfaceTexture}, the timestamps 697 * returned from {@link SurfaceTexture#getTimestamp()} will have an 698 * unspecified zero point. These timestamps cannot be directly compared 699 * between different media sources, different instances of the same media 700 * source, or multiple runs of the same program. The timestamp is normally 701 * monotonically increasing and is unaffected by time-of-day adjustments, 702 * but it is reset when the position is set. 703 * 704 * @param surface The {@link Surface} to be used for the video portion of 705 * the media. 706 */ 707 public void setSurface(Surface surface) { 708 if (mScreenOnWhilePlaying && surface != null) { 709 Log.w(TAG, "setScreenOnWhilePlaying(true) is ineffective for Surface"); 710 } 711 mSurfaceHolder = null; 712 _setVideoSurface(surface); 713 updateSurfaceScreenOn(); 714 } 715 716 /* Do not change these video scaling mode values below without updating 717 * their counterparts in system/window.h! Please do not forget to update 718 * {@link #isVideoScalingModeSupported} when new video scaling modes 719 * are added. 720 */ 721 /** 722 * Specifies a video scaling mode. The content is stretched to the 723 * surface rendering area. When the surface has the same aspect ratio 724 * as the content, the aspect ratio of the content is maintained; 725 * otherwise, the aspect ratio of the content is not maintained when video 726 * is being rendered. Unlike {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING}, 727 * there is no content cropping with this video scaling mode. 728 */ 729 public static final int VIDEO_SCALING_MODE_SCALE_TO_FIT = 1; 730 731 /** 732 * Specifies a video scaling mode. The content is scaled, maintaining 733 * its aspect ratio. The whole surface area is always used. When the 734 * aspect ratio of the content is the same as the surface, no content 735 * is cropped; otherwise, content is cropped to fit the surface. 736 */ 737 public static final int VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING = 2; 738 /** 739 * Sets video scaling mode. To make the target video scaling mode 740 * effective during playback, this method must be called after 741 * data source is set. If not called, the default video 742 * scaling mode is {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT}. 743 * 744 * <p> The supported video scaling modes are: 745 * <ul> 746 * <li> {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT} 747 * <li> {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING} 748 * </ul> 749 * 750 * @param mode target video scaling mode. Most be one of the supported 751 * video scaling modes; otherwise, IllegalArgumentException will be thrown. 752 * 753 * @see MediaPlayer#VIDEO_SCALING_MODE_SCALE_TO_FIT 754 * @see MediaPlayer#VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING 755 */ 756 public void setVideoScalingMode(int mode) { 757 if (!isVideoScalingModeSupported(mode)) { 758 final String msg = "Scaling mode " + mode + " is not supported"; 759 throw new IllegalArgumentException(msg); 760 } 761 Parcel request = Parcel.obtain(); 762 Parcel reply = Parcel.obtain(); 763 try { 764 request.writeInterfaceToken(IMEDIA_PLAYER); 765 request.writeInt(INVOKE_ID_SET_VIDEO_SCALE_MODE); 766 request.writeInt(mode); 767 invoke(request, reply); 768 } finally { 769 request.recycle(); 770 reply.recycle(); 771 } 772 } 773 774 /** 775 * Convenience method to create a MediaPlayer for a given Uri. 776 * On success, {@link #prepare()} will already have been called and must not be called again. 777 * <p>When done with the MediaPlayer, you should call {@link #release()}, 778 * to free the resources. If not released, too many MediaPlayer instances will 779 * result in an exception.</p> 780 * 781 * @param context the Context to use 782 * @param uri the Uri from which to get the datasource 783 * @return a MediaPlayer object, or null if creation failed 784 */ 785 public static MediaPlayer create(Context context, Uri uri) { 786 return create (context, uri, null); 787 } 788 789 /** 790 * Convenience method to create a MediaPlayer for a given Uri. 791 * On success, {@link #prepare()} will already have been called and must not be called again. 792 * <p>When done with the MediaPlayer, you should call {@link #release()}, 793 * to free the resources. If not released, too many MediaPlayer instances will 794 * result in an exception.</p> 795 * 796 * @param context the Context to use 797 * @param uri the Uri from which to get the datasource 798 * @param holder the SurfaceHolder to use for displaying the video 799 * @return a MediaPlayer object, or null if creation failed 800 */ 801 public static MediaPlayer create(Context context, Uri uri, SurfaceHolder holder) { 802 803 try { 804 MediaPlayer mp = new MediaPlayer(); 805 mp.setDataSource(context, uri); 806 if (holder != null) { 807 mp.setDisplay(holder); 808 } 809 mp.prepare(); 810 return mp; 811 } catch (IOException ex) { 812 Log.d(TAG, "create failed:", ex); 813 // fall through 814 } catch (IllegalArgumentException ex) { 815 Log.d(TAG, "create failed:", ex); 816 // fall through 817 } catch (SecurityException ex) { 818 Log.d(TAG, "create failed:", ex); 819 // fall through 820 } 821 822 return null; 823 } 824 825 // Note no convenience method to create a MediaPlayer with SurfaceTexture sink. 826 827 /** 828 * Convenience method to create a MediaPlayer for a given resource id. 829 * On success, {@link #prepare()} will already have been called and must not be called again. 830 * <p>When done with the MediaPlayer, you should call {@link #release()}, 831 * to free the resources. If not released, too many MediaPlayer instances will 832 * result in an exception.</p> 833 * 834 * @param context the Context to use 835 * @param resid the raw resource id (<var>R.raw.<something></var>) for 836 * the resource to use as the datasource 837 * @return a MediaPlayer object, or null if creation failed 838 */ 839 public static MediaPlayer create(Context context, int resid) { 840 try { 841 AssetFileDescriptor afd = context.getResources().openRawResourceFd(resid); 842 if (afd == null) return null; 843 844 MediaPlayer mp = new MediaPlayer(); 845 mp.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength()); 846 afd.close(); 847 mp.prepare(); 848 return mp; 849 } catch (IOException ex) { 850 Log.d(TAG, "create failed:", ex); 851 // fall through 852 } catch (IllegalArgumentException ex) { 853 Log.d(TAG, "create failed:", ex); 854 // fall through 855 } catch (SecurityException ex) { 856 Log.d(TAG, "create failed:", ex); 857 // fall through 858 } 859 return null; 860 } 861 862 /** 863 * Sets the data source as a content Uri. 864 * 865 * @param context the Context to use when resolving the Uri 866 * @param uri the Content URI of the data you want to play 867 * @throws IllegalStateException if it is called in an invalid state 868 */ 869 public void setDataSource(Context context, Uri uri) 870 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 871 setDataSource(context, uri, null); 872 } 873 874 /** 875 * Sets the data source as a content Uri. 876 * 877 * @param context the Context to use when resolving the Uri 878 * @param uri the Content URI of the data you want to play 879 * @param headers the headers to be sent together with the request for the data 880 * @throws IllegalStateException if it is called in an invalid state 881 */ 882 public void setDataSource(Context context, Uri uri, Map<String, String> headers) 883 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 884 disableProxyListener(); 885 886 String scheme = uri.getScheme(); 887 if(scheme == null || scheme.equals("file")) { 888 setDataSource(uri.getPath()); 889 return; 890 } 891 892 AssetFileDescriptor fd = null; 893 try { 894 ContentResolver resolver = context.getContentResolver(); 895 fd = resolver.openAssetFileDescriptor(uri, "r"); 896 if (fd == null) { 897 return; 898 } 899 // Note: using getDeclaredLength so that our behavior is the same 900 // as previous versions when the content provider is returning 901 // a full file. 902 if (fd.getDeclaredLength() < 0) { 903 setDataSource(fd.getFileDescriptor()); 904 } else { 905 setDataSource(fd.getFileDescriptor(), fd.getStartOffset(), fd.getDeclaredLength()); 906 } 907 return; 908 } catch (SecurityException ex) { 909 } catch (IOException ex) { 910 } finally { 911 if (fd != null) { 912 fd.close(); 913 } 914 } 915 916 Log.d(TAG, "Couldn't open file on client side, trying server side"); 917 918 setDataSource(uri.toString(), headers); 919 920 if (scheme.equalsIgnoreCase("http") 921 || scheme.equalsIgnoreCase("https")) { 922 setupProxyListener(context); 923 } 924 } 925 926 /** 927 * Sets the data source (file-path or http/rtsp URL) to use. 928 * 929 * @param path the path of the file, or the http/rtsp URL of the stream you want to play 930 * @throws IllegalStateException if it is called in an invalid state 931 * 932 * <p>When <code>path</code> refers to a local file, the file may actually be opened by a 933 * process other than the calling application. This implies that the pathname 934 * should be an absolute path (as any other process runs with unspecified current working 935 * directory), and that the pathname should reference a world-readable file. 936 * As an alternative, the application could first open the file for reading, 937 * and then use the file descriptor form {@link #setDataSource(FileDescriptor)}. 938 */ 939 public void setDataSource(String path) 940 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 941 setDataSource(path, null, null); 942 } 943 944 /** 945 * Sets the data source (file-path or http/rtsp URL) to use. 946 * 947 * @param path the path of the file, or the http/rtsp URL of the stream you want to play 948 * @param headers the headers associated with the http request for the stream you want to play 949 * @throws IllegalStateException if it is called in an invalid state 950 * @hide pending API council 951 */ 952 public void setDataSource(String path, Map<String, String> headers) 953 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException 954 { 955 String[] keys = null; 956 String[] values = null; 957 958 if (headers != null) { 959 keys = new String[headers.size()]; 960 values = new String[headers.size()]; 961 962 int i = 0; 963 for (Map.Entry<String, String> entry: headers.entrySet()) { 964 keys[i] = entry.getKey(); 965 values[i] = entry.getValue(); 966 ++i; 967 } 968 } 969 setDataSource(path, keys, values); 970 } 971 972 private void setDataSource(String path, String[] keys, String[] values) 973 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 974 disableProxyListener(); 975 976 final Uri uri = Uri.parse(path); 977 if ("file".equals(uri.getScheme())) { 978 path = uri.getPath(); 979 } 980 981 final File file = new File(path); 982 if (file.exists()) { 983 FileInputStream is = new FileInputStream(file); 984 FileDescriptor fd = is.getFD(); 985 setDataSource(fd); 986 is.close(); 987 } else { 988 _setDataSource(path, keys, values); 989 } 990 } 991 992 private native void _setDataSource( 993 String path, String[] keys, String[] values) 994 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException; 995 996 /** 997 * Sets the data source (FileDescriptor) to use. It is the caller's responsibility 998 * to close the file descriptor. It is safe to do so as soon as this call returns. 999 * 1000 * @param fd the FileDescriptor for the file you want to play 1001 * @throws IllegalStateException if it is called in an invalid state 1002 */ 1003 public void setDataSource(FileDescriptor fd) 1004 throws IOException, IllegalArgumentException, IllegalStateException { 1005 // intentionally less than LONG_MAX 1006 setDataSource(fd, 0, 0x7ffffffffffffffL); 1007 } 1008 1009 /** 1010 * Sets the data source (FileDescriptor) to use. The FileDescriptor must be 1011 * seekable (N.B. a LocalSocket is not seekable). It is the caller's responsibility 1012 * to close the file descriptor. It is safe to do so as soon as this call returns. 1013 * 1014 * @param fd the FileDescriptor for the file you want to play 1015 * @param offset the offset into the file where the data to be played starts, in bytes 1016 * @param length the length in bytes of the data to be played 1017 * @throws IllegalStateException if it is called in an invalid state 1018 */ 1019 public void setDataSource(FileDescriptor fd, long offset, long length) 1020 throws IOException, IllegalArgumentException, IllegalStateException { 1021 disableProxyListener(); 1022 _setDataSource(fd, offset, length); 1023 } 1024 1025 private native void _setDataSource(FileDescriptor fd, long offset, long length) 1026 throws IOException, IllegalArgumentException, IllegalStateException; 1027 1028 /** 1029 * Prepares the player for playback, synchronously. 1030 * 1031 * After setting the datasource and the display surface, you need to either 1032 * call prepare() or prepareAsync(). For files, it is OK to call prepare(), 1033 * which blocks until MediaPlayer is ready for playback. 1034 * 1035 * @throws IllegalStateException if it is called in an invalid state 1036 */ 1037 public native void prepare() throws IOException, IllegalStateException; 1038 1039 /** 1040 * Prepares the player for playback, asynchronously. 1041 * 1042 * After setting the datasource and the display surface, you need to either 1043 * call prepare() or prepareAsync(). For streams, you should call prepareAsync(), 1044 * which returns immediately, rather than blocking until enough data has been 1045 * buffered. 1046 * 1047 * @throws IllegalStateException if it is called in an invalid state 1048 */ 1049 public native void prepareAsync() throws IllegalStateException; 1050 1051 /** 1052 * Starts or resumes playback. If playback had previously been paused, 1053 * playback will continue from where it was paused. If playback had 1054 * been stopped, or never started before, playback will start at the 1055 * beginning. 1056 * 1057 * @throws IllegalStateException if it is called in an invalid state 1058 */ 1059 public void start() throws IllegalStateException { 1060 stayAwake(true); 1061 _start(); 1062 } 1063 1064 private native void _start() throws IllegalStateException; 1065 1066 /** 1067 * Stops playback after playback has been stopped or paused. 1068 * 1069 * @throws IllegalStateException if the internal player engine has not been 1070 * initialized. 1071 */ 1072 public void stop() throws IllegalStateException { 1073 stayAwake(false); 1074 _stop(); 1075 } 1076 1077 private native void _stop() throws IllegalStateException; 1078 1079 /** 1080 * Pauses playback. Call start() to resume. 1081 * 1082 * @throws IllegalStateException if the internal player engine has not been 1083 * initialized. 1084 */ 1085 public void pause() throws IllegalStateException { 1086 stayAwake(false); 1087 _pause(); 1088 } 1089 1090 private native void _pause() throws IllegalStateException; 1091 1092 /** 1093 * Set the low-level power management behavior for this MediaPlayer. This 1094 * can be used when the MediaPlayer is not playing through a SurfaceHolder 1095 * set with {@link #setDisplay(SurfaceHolder)} and thus can use the 1096 * high-level {@link #setScreenOnWhilePlaying(boolean)} feature. 1097 * 1098 * <p>This function has the MediaPlayer access the low-level power manager 1099 * service to control the device's power usage while playing is occurring. 1100 * The parameter is a combination of {@link android.os.PowerManager} wake flags. 1101 * Use of this method requires {@link android.Manifest.permission#WAKE_LOCK} 1102 * permission. 1103 * By default, no attempt is made to keep the device awake during playback. 1104 * 1105 * @param context the Context to use 1106 * @param mode the power/wake mode to set 1107 * @see android.os.PowerManager 1108 */ 1109 public void setWakeMode(Context context, int mode) { 1110 boolean washeld = false; 1111 if (mWakeLock != null) { 1112 if (mWakeLock.isHeld()) { 1113 washeld = true; 1114 mWakeLock.release(); 1115 } 1116 mWakeLock = null; 1117 } 1118 1119 PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE); 1120 mWakeLock = pm.newWakeLock(mode|PowerManager.ON_AFTER_RELEASE, MediaPlayer.class.getName()); 1121 mWakeLock.setReferenceCounted(false); 1122 if (washeld) { 1123 mWakeLock.acquire(); 1124 } 1125 } 1126 1127 /** 1128 * Control whether we should use the attached SurfaceHolder to keep the 1129 * screen on while video playback is occurring. This is the preferred 1130 * method over {@link #setWakeMode} where possible, since it doesn't 1131 * require that the application have permission for low-level wake lock 1132 * access. 1133 * 1134 * @param screenOn Supply true to keep the screen on, false to allow it 1135 * to turn off. 1136 */ 1137 public void setScreenOnWhilePlaying(boolean screenOn) { 1138 if (mScreenOnWhilePlaying != screenOn) { 1139 if (screenOn && mSurfaceHolder == null) { 1140 Log.w(TAG, "setScreenOnWhilePlaying(true) is ineffective without a SurfaceHolder"); 1141 } 1142 mScreenOnWhilePlaying = screenOn; 1143 updateSurfaceScreenOn(); 1144 } 1145 } 1146 1147 private void stayAwake(boolean awake) { 1148 if (mWakeLock != null) { 1149 if (awake && !mWakeLock.isHeld()) { 1150 mWakeLock.acquire(); 1151 } else if (!awake && mWakeLock.isHeld()) { 1152 mWakeLock.release(); 1153 } 1154 } 1155 mStayAwake = awake; 1156 updateSurfaceScreenOn(); 1157 } 1158 1159 private void updateSurfaceScreenOn() { 1160 if (mSurfaceHolder != null) { 1161 mSurfaceHolder.setKeepScreenOn(mScreenOnWhilePlaying && mStayAwake); 1162 } 1163 } 1164 1165 /** 1166 * Returns the width of the video. 1167 * 1168 * @return the width of the video, or 0 if there is no video, 1169 * no display surface was set, or the width has not been determined 1170 * yet. The OnVideoSizeChangedListener can be registered via 1171 * {@link #setOnVideoSizeChangedListener(OnVideoSizeChangedListener)} 1172 * to provide a notification when the width is available. 1173 */ 1174 public native int getVideoWidth(); 1175 1176 /** 1177 * Returns the height of the video. 1178 * 1179 * @return the height of the video, or 0 if there is no video, 1180 * no display surface was set, or the height has not been determined 1181 * yet. The OnVideoSizeChangedListener can be registered via 1182 * {@link #setOnVideoSizeChangedListener(OnVideoSizeChangedListener)} 1183 * to provide a notification when the height is available. 1184 */ 1185 public native int getVideoHeight(); 1186 1187 /** 1188 * Checks whether the MediaPlayer is playing. 1189 * 1190 * @return true if currently playing, false otherwise 1191 * @throws IllegalStateException if the internal player engine has not been 1192 * initialized or has been released. 1193 */ 1194 public native boolean isPlaying(); 1195 1196 /** 1197 * Seeks to specified time position. 1198 * 1199 * @param msec the offset in milliseconds from the start to seek to 1200 * @throws IllegalStateException if the internal player engine has not been 1201 * initialized 1202 */ 1203 public native void seekTo(int msec) throws IllegalStateException; 1204 1205 /** 1206 * Gets the current playback position. 1207 * 1208 * @return the current position in milliseconds 1209 */ 1210 public native int getCurrentPosition(); 1211 1212 /** 1213 * Gets the duration of the file. 1214 * 1215 * @return the duration in milliseconds, if no duration is available 1216 * (for example, if streaming live content), -1 is returned. 1217 */ 1218 public native int getDuration(); 1219 1220 /** 1221 * Gets the media metadata. 1222 * 1223 * @param update_only controls whether the full set of available 1224 * metadata is returned or just the set that changed since the 1225 * last call. See {@see #METADATA_UPDATE_ONLY} and {@see 1226 * #METADATA_ALL}. 1227 * 1228 * @param apply_filter if true only metadata that matches the 1229 * filter is returned. See {@see #APPLY_METADATA_FILTER} and {@see 1230 * #BYPASS_METADATA_FILTER}. 1231 * 1232 * @return The metadata, possibly empty. null if an error occured. 1233 // FIXME: unhide. 1234 * {@hide} 1235 */ 1236 public Metadata getMetadata(final boolean update_only, 1237 final boolean apply_filter) { 1238 Parcel reply = Parcel.obtain(); 1239 Metadata data = new Metadata(); 1240 1241 if (!native_getMetadata(update_only, apply_filter, reply)) { 1242 reply.recycle(); 1243 return null; 1244 } 1245 1246 // Metadata takes over the parcel, don't recycle it unless 1247 // there is an error. 1248 if (!data.parse(reply)) { 1249 reply.recycle(); 1250 return null; 1251 } 1252 return data; 1253 } 1254 1255 /** 1256 * Set a filter for the metadata update notification and update 1257 * retrieval. The caller provides 2 set of metadata keys, allowed 1258 * and blocked. The blocked set always takes precedence over the 1259 * allowed one. 1260 * Metadata.MATCH_ALL and Metadata.MATCH_NONE are 2 sets available as 1261 * shorthands to allow/block all or no metadata. 1262 * 1263 * By default, there is no filter set. 1264 * 1265 * @param allow Is the set of metadata the client is interested 1266 * in receiving new notifications for. 1267 * @param block Is the set of metadata the client is not interested 1268 * in receiving new notifications for. 1269 * @return The call status code. 1270 * 1271 // FIXME: unhide. 1272 * {@hide} 1273 */ 1274 public int setMetadataFilter(Set<Integer> allow, Set<Integer> block) { 1275 // Do our serialization manually instead of calling 1276 // Parcel.writeArray since the sets are made of the same type 1277 // we avoid paying the price of calling writeValue (used by 1278 // writeArray) which burns an extra int per element to encode 1279 // the type. 1280 Parcel request = newRequest(); 1281 1282 // The parcel starts already with an interface token. There 1283 // are 2 filters. Each one starts with a 4bytes number to 1284 // store the len followed by a number of int (4 bytes as well) 1285 // representing the metadata type. 1286 int capacity = request.dataSize() + 4 * (1 + allow.size() + 1 + block.size()); 1287 1288 if (request.dataCapacity() < capacity) { 1289 request.setDataCapacity(capacity); 1290 } 1291 1292 request.writeInt(allow.size()); 1293 for(Integer t: allow) { 1294 request.writeInt(t); 1295 } 1296 request.writeInt(block.size()); 1297 for(Integer t: block) { 1298 request.writeInt(t); 1299 } 1300 return native_setMetadataFilter(request); 1301 } 1302 1303 /** 1304 * Set the MediaPlayer to start when this MediaPlayer finishes playback 1305 * (i.e. reaches the end of the stream). 1306 * The media framework will attempt to transition from this player to 1307 * the next as seamlessly as possible. The next player can be set at 1308 * any time before completion. The next player must be prepared by the 1309 * app, and the application should not call start() on it. 1310 * The next MediaPlayer must be different from 'this'. An exception 1311 * will be thrown if next == this. 1312 * The application may call setNextMediaPlayer(null) to indicate no 1313 * next player should be started at the end of playback. 1314 * If the current player is looping, it will keep looping and the next 1315 * player will not be started. 1316 * 1317 * @param next the player to start after this one completes playback. 1318 * 1319 */ 1320 public native void setNextMediaPlayer(MediaPlayer next); 1321 1322 /** 1323 * Releases resources associated with this MediaPlayer object. 1324 * It is considered good practice to call this method when you're 1325 * done using the MediaPlayer. In particular, whenever an Activity 1326 * of an application is paused (its onPause() method is called), 1327 * or stopped (its onStop() method is called), this method should be 1328 * invoked to release the MediaPlayer object, unless the application 1329 * has a special need to keep the object around. In addition to 1330 * unnecessary resources (such as memory and instances of codecs) 1331 * being held, failure to call this method immediately if a 1332 * MediaPlayer object is no longer needed may also lead to 1333 * continuous battery consumption for mobile devices, and playback 1334 * failure for other applications if no multiple instances of the 1335 * same codec are supported on a device. Even if multiple instances 1336 * of the same codec are supported, some performance degradation 1337 * may be expected when unnecessary multiple instances are used 1338 * at the same time. 1339 */ 1340 public void release() { 1341 stayAwake(false); 1342 updateSurfaceScreenOn(); 1343 mOnPreparedListener = null; 1344 mOnBufferingUpdateListener = null; 1345 mOnCompletionListener = null; 1346 mOnSeekCompleteListener = null; 1347 mOnErrorListener = null; 1348 mOnInfoListener = null; 1349 mOnVideoSizeChangedListener = null; 1350 mOnTimedTextListener = null; 1351 if (mTimeProvider != null) { 1352 mTimeProvider.close(); 1353 mTimeProvider = null; 1354 } 1355 mOnSubtitleDataListener = null; 1356 _release(); 1357 } 1358 1359 private native void _release(); 1360 1361 /** 1362 * Resets the MediaPlayer to its uninitialized state. After calling 1363 * this method, you will have to initialize it again by setting the 1364 * data source and calling prepare(). 1365 */ 1366 public void reset() { 1367 mSelectedSubtitleTrackIndex = -1; 1368 synchronized(mOpenSubtitleSources) { 1369 for (final InputStream is: mOpenSubtitleSources) { 1370 try { 1371 is.close(); 1372 } catch (IOException e) { 1373 } 1374 } 1375 mOpenSubtitleSources.clear(); 1376 } 1377 mOutOfBandSubtitleTracks.clear(); 1378 mInbandSubtitleTracks = new SubtitleTrack[0]; 1379 if (mSubtitleController != null) { 1380 mSubtitleController.reset(); 1381 } 1382 if (mTimeProvider != null) { 1383 mTimeProvider.close(); 1384 mTimeProvider = null; 1385 } 1386 1387 stayAwake(false); 1388 _reset(); 1389 // make sure none of the listeners get called anymore 1390 if (mEventHandler != null) { 1391 mEventHandler.removeCallbacksAndMessages(null); 1392 } 1393 1394 disableProxyListener(); 1395 } 1396 1397 private native void _reset(); 1398 1399 /** 1400 * Sets the audio stream type for this MediaPlayer. See {@link AudioManager} 1401 * for a list of stream types. Must call this method before prepare() or 1402 * prepareAsync() in order for the target stream type to become effective 1403 * thereafter. 1404 * 1405 * @param streamtype the audio stream type 1406 * @see android.media.AudioManager 1407 */ 1408 public native void setAudioStreamType(int streamtype); 1409 1410 /** 1411 * Sets the player to be looping or non-looping. 1412 * 1413 * @param looping whether to loop or not 1414 */ 1415 public native void setLooping(boolean looping); 1416 1417 /** 1418 * Checks whether the MediaPlayer is looping or non-looping. 1419 * 1420 * @return true if the MediaPlayer is currently looping, false otherwise 1421 */ 1422 public native boolean isLooping(); 1423 1424 /** 1425 * Sets the volume on this player. 1426 * This API is recommended for balancing the output of audio streams 1427 * within an application. Unless you are writing an application to 1428 * control user settings, this API should be used in preference to 1429 * {@link AudioManager#setStreamVolume(int, int, int)} which sets the volume of ALL streams of 1430 * a particular type. Note that the passed volume values are raw scalars in range 0.0 to 1.0. 1431 * UI controls should be scaled logarithmically. 1432 * 1433 * @param leftVolume left volume scalar 1434 * @param rightVolume right volume scalar 1435 */ 1436 /* 1437 * FIXME: Merge this into javadoc comment above when setVolume(float) is not @hide. 1438 * The single parameter form below is preferred if the channel volumes don't need 1439 * to be set independently. 1440 */ 1441 public native void setVolume(float leftVolume, float rightVolume); 1442 1443 /** 1444 * Similar, excepts sets volume of all channels to same value. 1445 * @hide 1446 */ 1447 public void setVolume(float volume) { 1448 setVolume(volume, volume); 1449 } 1450 1451 /** 1452 * Sets the audio session ID. 1453 * 1454 * @param sessionId the audio session ID. 1455 * The audio session ID is a system wide unique identifier for the audio stream played by 1456 * this MediaPlayer instance. 1457 * The primary use of the audio session ID is to associate audio effects to a particular 1458 * instance of MediaPlayer: if an audio session ID is provided when creating an audio effect, 1459 * this effect will be applied only to the audio content of media players within the same 1460 * audio session and not to the output mix. 1461 * When created, a MediaPlayer instance automatically generates its own audio session ID. 1462 * However, it is possible to force this player to be part of an already existing audio session 1463 * by calling this method. 1464 * This method must be called before one of the overloaded <code> setDataSource </code> methods. 1465 * @throws IllegalStateException if it is called in an invalid state 1466 */ 1467 public native void setAudioSessionId(int sessionId) throws IllegalArgumentException, IllegalStateException; 1468 1469 /** 1470 * Returns the audio session ID. 1471 * 1472 * @return the audio session ID. {@see #setAudioSessionId(int)} 1473 * Note that the audio session ID is 0 only if a problem occured when the MediaPlayer was contructed. 1474 */ 1475 public native int getAudioSessionId(); 1476 1477 /** 1478 * Attaches an auxiliary effect to the player. A typical auxiliary effect is a reverberation 1479 * effect which can be applied on any sound source that directs a certain amount of its 1480 * energy to this effect. This amount is defined by setAuxEffectSendLevel(). 1481 * {@see #setAuxEffectSendLevel(float)}. 1482 * <p>After creating an auxiliary effect (e.g. 1483 * {@link android.media.audiofx.EnvironmentalReverb}), retrieve its ID with 1484 * {@link android.media.audiofx.AudioEffect#getId()} and use it when calling this method 1485 * to attach the player to the effect. 1486 * <p>To detach the effect from the player, call this method with a null effect id. 1487 * <p>This method must be called after one of the overloaded <code> setDataSource </code> 1488 * methods. 1489 * @param effectId system wide unique id of the effect to attach 1490 */ 1491 public native void attachAuxEffect(int effectId); 1492 1493 1494 /** 1495 * Sets the send level of the player to the attached auxiliary effect 1496 * {@see #attachAuxEffect(int)}. The level value range is 0 to 1.0. 1497 * <p>By default the send level is 0, so even if an effect is attached to the player 1498 * this method must be called for the effect to be applied. 1499 * <p>Note that the passed level value is a raw scalar. UI controls should be scaled 1500 * logarithmically: the gain applied by audio framework ranges from -72dB to 0dB, 1501 * so an appropriate conversion from linear UI input x to level is: 1502 * x == 0 -> level = 0 1503 * 0 < x <= R -> level = 10^(72*(x-R)/20/R) 1504 * @param level send level scalar 1505 */ 1506 public native void setAuxEffectSendLevel(float level); 1507 1508 /* 1509 * @param request Parcel destinated to the media player. The 1510 * Interface token must be set to the IMediaPlayer 1511 * one to be routed correctly through the system. 1512 * @param reply[out] Parcel that will contain the reply. 1513 * @return The status code. 1514 */ 1515 private native final int native_invoke(Parcel request, Parcel reply); 1516 1517 1518 /* 1519 * @param update_only If true fetch only the set of metadata that have 1520 * changed since the last invocation of getMetadata. 1521 * The set is built using the unfiltered 1522 * notifications the native player sent to the 1523 * MediaPlayerService during that period of 1524 * time. If false, all the metadatas are considered. 1525 * @param apply_filter If true, once the metadata set has been built based on 1526 * the value update_only, the current filter is applied. 1527 * @param reply[out] On return contains the serialized 1528 * metadata. Valid only if the call was successful. 1529 * @return The status code. 1530 */ 1531 private native final boolean native_getMetadata(boolean update_only, 1532 boolean apply_filter, 1533 Parcel reply); 1534 1535 /* 1536 * @param request Parcel with the 2 serialized lists of allowed 1537 * metadata types followed by the one to be 1538 * dropped. Each list starts with an integer 1539 * indicating the number of metadata type elements. 1540 * @return The status code. 1541 */ 1542 private native final int native_setMetadataFilter(Parcel request); 1543 1544 private static native final void native_init(); 1545 private native final void native_setup(Object mediaplayer_this); 1546 private native final void native_finalize(); 1547 1548 /** 1549 * Class for MediaPlayer to return each audio/video/subtitle track's metadata. 1550 * 1551 * @see android.media.MediaPlayer#getTrackInfo 1552 */ 1553 static public class TrackInfo implements Parcelable { 1554 /** 1555 * Gets the track type. 1556 * @return TrackType which indicates if the track is video, audio, timed text. 1557 */ 1558 public int getTrackType() { 1559 return mTrackType; 1560 } 1561 1562 /** 1563 * Gets the language code of the track. 1564 * @return a language code in either way of ISO-639-1 or ISO-639-2. 1565 * When the language is unknown or could not be determined, 1566 * ISO-639-2 language code, "und", is returned. 1567 */ 1568 public String getLanguage() { 1569 String language = mFormat.getString(MediaFormat.KEY_LANGUAGE); 1570 return language == null ? "und" : language; 1571 } 1572 1573 /** 1574 * Gets the {@link MediaFormat} of the track. If the format is 1575 * unknown or could not be determined, null is returned. 1576 */ 1577 public MediaFormat getFormat() { 1578 if (mTrackType == MEDIA_TRACK_TYPE_TIMEDTEXT 1579 || mTrackType == MEDIA_TRACK_TYPE_SUBTITLE) { 1580 return mFormat; 1581 } 1582 return null; 1583 } 1584 1585 public static final int MEDIA_TRACK_TYPE_UNKNOWN = 0; 1586 public static final int MEDIA_TRACK_TYPE_VIDEO = 1; 1587 public static final int MEDIA_TRACK_TYPE_AUDIO = 2; 1588 public static final int MEDIA_TRACK_TYPE_TIMEDTEXT = 3; 1589 /** @hide */ 1590 public static final int MEDIA_TRACK_TYPE_SUBTITLE = 4; 1591 1592 final int mTrackType; 1593 final MediaFormat mFormat; 1594 1595 TrackInfo(Parcel in) { 1596 mTrackType = in.readInt(); 1597 // TODO: parcel in the full MediaFormat 1598 String language = in.readString(); 1599 1600 if (mTrackType == MEDIA_TRACK_TYPE_TIMEDTEXT) { 1601 mFormat = MediaFormat.createSubtitleFormat( 1602 MEDIA_MIMETYPE_TEXT_SUBRIP, language); 1603 } else if (mTrackType == MEDIA_TRACK_TYPE_SUBTITLE) { 1604 mFormat = MediaFormat.createSubtitleFormat( 1605 MEDIA_MIMETYPE_TEXT_VTT, language); 1606 mFormat.setInteger(MediaFormat.KEY_IS_AUTOSELECT, in.readInt()); 1607 mFormat.setInteger(MediaFormat.KEY_IS_DEFAULT, in.readInt()); 1608 mFormat.setInteger(MediaFormat.KEY_IS_FORCED_SUBTITLE, in.readInt()); 1609 } else { 1610 mFormat = new MediaFormat(); 1611 mFormat.setString(MediaFormat.KEY_LANGUAGE, language); 1612 } 1613 } 1614 1615 /** @hide */ 1616 TrackInfo(int type, MediaFormat format) { 1617 mTrackType = type; 1618 mFormat = format; 1619 } 1620 1621 /** 1622 * {@inheritDoc} 1623 */ 1624 @Override 1625 public int describeContents() { 1626 return 0; 1627 } 1628 1629 /** 1630 * {@inheritDoc} 1631 */ 1632 @Override 1633 public void writeToParcel(Parcel dest, int flags) { 1634 dest.writeInt(mTrackType); 1635 dest.writeString(getLanguage()); 1636 1637 if (mTrackType == MEDIA_TRACK_TYPE_SUBTITLE) { 1638 dest.writeInt(mFormat.getInteger(MediaFormat.KEY_IS_AUTOSELECT)); 1639 dest.writeInt(mFormat.getInteger(MediaFormat.KEY_IS_DEFAULT)); 1640 dest.writeInt(mFormat.getInteger(MediaFormat.KEY_IS_FORCED_SUBTITLE)); 1641 } 1642 } 1643 1644 /** 1645 * Used to read a TrackInfo from a Parcel. 1646 */ 1647 static final Parcelable.Creator<TrackInfo> CREATOR 1648 = new Parcelable.Creator<TrackInfo>() { 1649 @Override 1650 public TrackInfo createFromParcel(Parcel in) { 1651 return new TrackInfo(in); 1652 } 1653 1654 @Override 1655 public TrackInfo[] newArray(int size) { 1656 return new TrackInfo[size]; 1657 } 1658 }; 1659 1660 }; 1661 1662 /** 1663 * Returns an array of track information. 1664 * 1665 * @return Array of track info. The total number of tracks is the array length. 1666 * Must be called again if an external timed text source has been added after any of the 1667 * addTimedTextSource methods are called. 1668 * @throws IllegalStateException if it is called in an invalid state. 1669 */ 1670 public TrackInfo[] getTrackInfo() throws IllegalStateException { 1671 TrackInfo trackInfo[] = getInbandTrackInfo(); 1672 // add out-of-band tracks 1673 TrackInfo allTrackInfo[] = new TrackInfo[trackInfo.length + mOutOfBandSubtitleTracks.size()]; 1674 System.arraycopy(trackInfo, 0, allTrackInfo, 0, trackInfo.length); 1675 int i = trackInfo.length; 1676 for (SubtitleTrack track: mOutOfBandSubtitleTracks) { 1677 allTrackInfo[i] = new TrackInfo(TrackInfo.MEDIA_TRACK_TYPE_SUBTITLE, track.getFormat()); 1678 ++i; 1679 } 1680 return allTrackInfo; 1681 } 1682 1683 private TrackInfo[] getInbandTrackInfo() throws IllegalStateException { 1684 Parcel request = Parcel.obtain(); 1685 Parcel reply = Parcel.obtain(); 1686 try { 1687 request.writeInterfaceToken(IMEDIA_PLAYER); 1688 request.writeInt(INVOKE_ID_GET_TRACK_INFO); 1689 invoke(request, reply); 1690 TrackInfo trackInfo[] = reply.createTypedArray(TrackInfo.CREATOR); 1691 return trackInfo; 1692 } finally { 1693 request.recycle(); 1694 reply.recycle(); 1695 } 1696 } 1697 1698 /* Do not change these values without updating their counterparts 1699 * in include/media/stagefright/MediaDefs.h and media/libstagefright/MediaDefs.cpp! 1700 */ 1701 /** 1702 * MIME type for SubRip (SRT) container. Used in addTimedTextSource APIs. 1703 */ 1704 public static final String MEDIA_MIMETYPE_TEXT_SUBRIP = "application/x-subrip"; 1705 1706 /** 1707 * MIME type for WebVTT subtitle data. 1708 * @hide 1709 */ 1710 public static final String MEDIA_MIMETYPE_TEXT_VTT = "text/vtt"; 1711 1712 /* 1713 * A helper function to check if the mime type is supported by media framework. 1714 */ 1715 private static boolean availableMimeTypeForExternalSource(String mimeType) { 1716 if (mimeType == MEDIA_MIMETYPE_TEXT_SUBRIP) { 1717 return true; 1718 } 1719 return false; 1720 } 1721 1722 private SubtitleController mSubtitleController; 1723 1724 /** @hide */ 1725 public void setSubtitleAnchor( 1726 SubtitleController controller, 1727 SubtitleController.Anchor anchor) { 1728 // TODO: create SubtitleController in MediaPlayer 1729 mSubtitleController = controller; 1730 mSubtitleController.setAnchor(anchor); 1731 } 1732 1733 private SubtitleTrack[] mInbandSubtitleTracks; 1734 private int mSelectedSubtitleTrackIndex = -1; 1735 private Vector<SubtitleTrack> mOutOfBandSubtitleTracks; 1736 private Vector<InputStream> mOpenSubtitleSources; 1737 1738 private OnSubtitleDataListener mSubtitleDataListener = new OnSubtitleDataListener() { 1739 @Override 1740 public void onSubtitleData(MediaPlayer mp, SubtitleData data) { 1741 int index = data.getTrackIndex(); 1742 if (index >= mInbandSubtitleTracks.length) { 1743 return; 1744 } 1745 SubtitleTrack track = mInbandSubtitleTracks[index]; 1746 if (track != null) { 1747 try { 1748 long runID = data.getStartTimeUs() + 1; 1749 // TODO: move conversion into track 1750 track.onData(new String(data.getData(), "UTF-8"), true /* eos */, runID); 1751 track.setRunDiscardTimeMs( 1752 runID, 1753 (data.getStartTimeUs() + data.getDurationUs()) / 1000); 1754 } catch (java.io.UnsupportedEncodingException e) { 1755 Log.w(TAG, "subtitle data for track " + index + " is not UTF-8 encoded: " + e); 1756 } 1757 } 1758 } 1759 }; 1760 1761 /** @hide */ 1762 @Override 1763 public void onSubtitleTrackSelected(SubtitleTrack track) { 1764 if (mSelectedSubtitleTrackIndex >= 0) { 1765 try { 1766 selectOrDeselectInbandTrack(mSelectedSubtitleTrackIndex, false); 1767 } catch (IllegalStateException e) { 1768 } 1769 mSelectedSubtitleTrackIndex = -1; 1770 } 1771 setOnSubtitleDataListener(null); 1772 if (track == null) { 1773 return; 1774 } 1775 for (int i = 0; i < mInbandSubtitleTracks.length; i++) { 1776 if (mInbandSubtitleTracks[i] == track) { 1777 Log.v(TAG, "Selecting subtitle track " + i); 1778 mSelectedSubtitleTrackIndex = i; 1779 try { 1780 selectOrDeselectInbandTrack(mSelectedSubtitleTrackIndex, true); 1781 } catch (IllegalStateException e) { 1782 } 1783 setOnSubtitleDataListener(mSubtitleDataListener); 1784 break; 1785 } 1786 } 1787 // no need to select out-of-band tracks 1788 } 1789 1790 /** @hide */ 1791 public void addSubtitleSource(InputStream is, MediaFormat format) 1792 throws IllegalStateException 1793 { 1794 final InputStream fIs = is; 1795 final MediaFormat fFormat = format; 1796 1797 // Ensure all input streams are closed. It is also a handy 1798 // way to implement timeouts in the future. 1799 synchronized(mOpenSubtitleSources) { 1800 mOpenSubtitleSources.add(is); 1801 } 1802 1803 // process each subtitle in its own thread 1804 final HandlerThread thread = new HandlerThread("SubtitleReadThread", 1805 Process.THREAD_PRIORITY_BACKGROUND + Process.THREAD_PRIORITY_MORE_FAVORABLE); 1806 thread.start(); 1807 Handler handler = new Handler(thread.getLooper()); 1808 handler.post(new Runnable() { 1809 private int addTrack() { 1810 if (fIs == null || mSubtitleController == null) { 1811 return MEDIA_INFO_UNSUPPORTED_SUBTITLE; 1812 } 1813 1814 SubtitleTrack track = mSubtitleController.addTrack(fFormat); 1815 if (track == null) { 1816 return MEDIA_INFO_UNSUPPORTED_SUBTITLE; 1817 } 1818 1819 // TODO: do the conversion in the subtitle track 1820 Scanner scanner = new Scanner(fIs, "UTF-8"); 1821 String contents = scanner.useDelimiter("\\A").next(); 1822 synchronized(mOpenSubtitleSources) { 1823 mOpenSubtitleSources.remove(fIs); 1824 } 1825 scanner.close(); 1826 mOutOfBandSubtitleTracks.add(track); 1827 track.onData(contents, true /* eos */, ~0 /* runID: keep forever */); 1828 return MEDIA_INFO_EXTERNAL_METADATA_UPDATE; 1829 } 1830 1831 public void run() { 1832 int res = addTrack(); 1833 if (mEventHandler != null) { 1834 Message m = mEventHandler.obtainMessage(MEDIA_INFO, res, 0, null); 1835 mEventHandler.sendMessage(m); 1836 } 1837 thread.getLooper().quitSafely(); 1838 } 1839 }); 1840 } 1841 1842 private void scanInternalSubtitleTracks() { 1843 if (mSubtitleController == null) { 1844 Log.e(TAG, "Should have subtitle controller already set"); 1845 return; 1846 } 1847 1848 TrackInfo[] tracks = getInbandTrackInfo(); 1849 SubtitleTrack[] inbandTracks = new SubtitleTrack[tracks.length]; 1850 for (int i=0; i < tracks.length; i++) { 1851 if (tracks[i].getTrackType() == TrackInfo.MEDIA_TRACK_TYPE_SUBTITLE) { 1852 if (i < mInbandSubtitleTracks.length) { 1853 inbandTracks[i] = mInbandSubtitleTracks[i]; 1854 } else { 1855 SubtitleTrack track = mSubtitleController.addTrack( 1856 tracks[i].getFormat()); 1857 inbandTracks[i] = track; 1858 } 1859 } 1860 } 1861 mInbandSubtitleTracks = inbandTracks; 1862 mSubtitleController.selectDefaultTrack(); 1863 } 1864 1865 /* TODO: Limit the total number of external timed text source to a reasonable number. 1866 */ 1867 /** 1868 * Adds an external timed text source file. 1869 * 1870 * Currently supported format is SubRip with the file extension .srt, case insensitive. 1871 * Note that a single external timed text source may contain multiple tracks in it. 1872 * One can find the total number of available tracks using {@link #getTrackInfo()} to see what 1873 * additional tracks become available after this method call. 1874 * 1875 * @param path The file path of external timed text source file. 1876 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1877 * @throws IOException if the file cannot be accessed or is corrupted. 1878 * @throws IllegalArgumentException if the mimeType is not supported. 1879 * @throws IllegalStateException if called in an invalid state. 1880 */ 1881 public void addTimedTextSource(String path, String mimeType) 1882 throws IOException, IllegalArgumentException, IllegalStateException { 1883 if (!availableMimeTypeForExternalSource(mimeType)) { 1884 final String msg = "Illegal mimeType for timed text source: " + mimeType; 1885 throw new IllegalArgumentException(msg); 1886 } 1887 1888 File file = new File(path); 1889 if (file.exists()) { 1890 FileInputStream is = new FileInputStream(file); 1891 FileDescriptor fd = is.getFD(); 1892 addTimedTextSource(fd, mimeType); 1893 is.close(); 1894 } else { 1895 // We do not support the case where the path is not a file. 1896 throw new IOException(path); 1897 } 1898 } 1899 1900 /** 1901 * Adds an external timed text source file (Uri). 1902 * 1903 * Currently supported format is SubRip with the file extension .srt, case insensitive. 1904 * Note that a single external timed text source may contain multiple tracks in it. 1905 * One can find the total number of available tracks using {@link #getTrackInfo()} to see what 1906 * additional tracks become available after this method call. 1907 * 1908 * @param context the Context to use when resolving the Uri 1909 * @param uri the Content URI of the data you want to play 1910 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1911 * @throws IOException if the file cannot be accessed or is corrupted. 1912 * @throws IllegalArgumentException if the mimeType is not supported. 1913 * @throws IllegalStateException if called in an invalid state. 1914 */ 1915 public void addTimedTextSource(Context context, Uri uri, String mimeType) 1916 throws IOException, IllegalArgumentException, IllegalStateException { 1917 String scheme = uri.getScheme(); 1918 if(scheme == null || scheme.equals("file")) { 1919 addTimedTextSource(uri.getPath(), mimeType); 1920 return; 1921 } 1922 1923 AssetFileDescriptor fd = null; 1924 try { 1925 ContentResolver resolver = context.getContentResolver(); 1926 fd = resolver.openAssetFileDescriptor(uri, "r"); 1927 if (fd == null) { 1928 return; 1929 } 1930 addTimedTextSource(fd.getFileDescriptor(), mimeType); 1931 return; 1932 } catch (SecurityException ex) { 1933 } catch (IOException ex) { 1934 } finally { 1935 if (fd != null) { 1936 fd.close(); 1937 } 1938 } 1939 } 1940 1941 /** 1942 * Adds an external timed text source file (FileDescriptor). 1943 * 1944 * It is the caller's responsibility to close the file descriptor. 1945 * It is safe to do so as soon as this call returns. 1946 * 1947 * Currently supported format is SubRip. Note that a single external timed text source may 1948 * contain multiple tracks in it. One can find the total number of available tracks 1949 * using {@link #getTrackInfo()} to see what additional tracks become available 1950 * after this method call. 1951 * 1952 * @param fd the FileDescriptor for the file you want to play 1953 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1954 * @throws IllegalArgumentException if the mimeType is not supported. 1955 * @throws IllegalStateException if called in an invalid state. 1956 */ 1957 public void addTimedTextSource(FileDescriptor fd, String mimeType) 1958 throws IllegalArgumentException, IllegalStateException { 1959 // intentionally less than LONG_MAX 1960 addTimedTextSource(fd, 0, 0x7ffffffffffffffL, mimeType); 1961 } 1962 1963 /** 1964 * Adds an external timed text file (FileDescriptor). 1965 * 1966 * It is the caller's responsibility to close the file descriptor. 1967 * It is safe to do so as soon as this call returns. 1968 * 1969 * Currently supported format is SubRip. Note that a single external timed text source may 1970 * contain multiple tracks in it. One can find the total number of available tracks 1971 * using {@link #getTrackInfo()} to see what additional tracks become available 1972 * after this method call. 1973 * 1974 * @param fd the FileDescriptor for the file you want to play 1975 * @param offset the offset into the file where the data to be played starts, in bytes 1976 * @param length the length in bytes of the data to be played 1977 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1978 * @throws IllegalArgumentException if the mimeType is not supported. 1979 * @throws IllegalStateException if called in an invalid state. 1980 */ 1981 public void addTimedTextSource(FileDescriptor fd, long offset, long length, String mimeType) 1982 throws IllegalArgumentException, IllegalStateException { 1983 if (!availableMimeTypeForExternalSource(mimeType)) { 1984 throw new IllegalArgumentException("Illegal mimeType for timed text source: " + mimeType); 1985 } 1986 1987 Parcel request = Parcel.obtain(); 1988 Parcel reply = Parcel.obtain(); 1989 try { 1990 request.writeInterfaceToken(IMEDIA_PLAYER); 1991 request.writeInt(INVOKE_ID_ADD_EXTERNAL_SOURCE_FD); 1992 request.writeFileDescriptor(fd); 1993 request.writeLong(offset); 1994 request.writeLong(length); 1995 request.writeString(mimeType); 1996 invoke(request, reply); 1997 } finally { 1998 request.recycle(); 1999 reply.recycle(); 2000 } 2001 } 2002 2003 /** 2004 * Selects a track. 2005 * <p> 2006 * If a MediaPlayer is in invalid state, it throws an IllegalStateException exception. 2007 * If a MediaPlayer is in <em>Started</em> state, the selected track is presented immediately. 2008 * If a MediaPlayer is not in Started state, it just marks the track to be played. 2009 * </p> 2010 * <p> 2011 * In any valid state, if it is called multiple times on the same type of track (ie. Video, 2012 * Audio, Timed Text), the most recent one will be chosen. 2013 * </p> 2014 * <p> 2015 * The first audio and video tracks are selected by default if available, even though 2016 * this method is not called. However, no timed text track will be selected until 2017 * this function is called. 2018 * </p> 2019 * <p> 2020 * Currently, only timed text tracks or audio tracks can be selected via this method. 2021 * In addition, the support for selecting an audio track at runtime is pretty limited 2022 * in that an audio track can only be selected in the <em>Prepared</em> state. 2023 * </p> 2024 * @param index the index of the track to be selected. The valid range of the index 2025 * is 0..total number of track - 1. The total number of tracks as well as the type of 2026 * each individual track can be found by calling {@link #getTrackInfo()} method. 2027 * @throws IllegalStateException if called in an invalid state. 2028 * 2029 * @see android.media.MediaPlayer#getTrackInfo 2030 */ 2031 public void selectTrack(int index) throws IllegalStateException { 2032 selectOrDeselectTrack(index, true /* select */); 2033 } 2034 2035 /** 2036 * Deselect a track. 2037 * <p> 2038 * Currently, the track must be a timed text track and no audio or video tracks can be 2039 * deselected. If the timed text track identified by index has not been 2040 * selected before, it throws an exception. 2041 * </p> 2042 * @param index the index of the track to be deselected. The valid range of the index 2043 * is 0..total number of tracks - 1. The total number of tracks as well as the type of 2044 * each individual track can be found by calling {@link #getTrackInfo()} method. 2045 * @throws IllegalStateException if called in an invalid state. 2046 * 2047 * @see android.media.MediaPlayer#getTrackInfo 2048 */ 2049 public void deselectTrack(int index) throws IllegalStateException { 2050 selectOrDeselectTrack(index, false /* select */); 2051 } 2052 2053 private void selectOrDeselectTrack(int index, boolean select) 2054 throws IllegalStateException { 2055 // handle subtitle track through subtitle controller 2056 SubtitleTrack track = null; 2057 if (index < mInbandSubtitleTracks.length) { 2058 track = mInbandSubtitleTracks[index]; 2059 } else if (index < mInbandSubtitleTracks.length + mOutOfBandSubtitleTracks.size()) { 2060 track = mOutOfBandSubtitleTracks.get(index - mInbandSubtitleTracks.length); 2061 } 2062 2063 if (mSubtitleController != null && track != null) { 2064 if (select) { 2065 mSubtitleController.selectTrack(track); 2066 } else if (mSubtitleController.getSelectedTrack() == track) { 2067 mSubtitleController.selectTrack(null); 2068 } else { 2069 Log.w(TAG, "trying to deselect track that was not selected"); 2070 } 2071 return; 2072 } 2073 2074 selectOrDeselectInbandTrack(index, select); 2075 } 2076 2077 private void selectOrDeselectInbandTrack(int index, boolean select) 2078 throws IllegalStateException { 2079 Parcel request = Parcel.obtain(); 2080 Parcel reply = Parcel.obtain(); 2081 try { 2082 request.writeInterfaceToken(IMEDIA_PLAYER); 2083 request.writeInt(select? INVOKE_ID_SELECT_TRACK: INVOKE_ID_DESELECT_TRACK); 2084 request.writeInt(index); 2085 invoke(request, reply); 2086 } finally { 2087 request.recycle(); 2088 reply.recycle(); 2089 } 2090 } 2091 2092 2093 /** 2094 * @param reply Parcel with audio/video duration info for battery 2095 tracking usage 2096 * @return The status code. 2097 * {@hide} 2098 */ 2099 public native static int native_pullBatteryData(Parcel reply); 2100 2101 /** 2102 * Sets the target UDP re-transmit endpoint for the low level player. 2103 * Generally, the address portion of the endpoint is an IP multicast 2104 * address, although a unicast address would be equally valid. When a valid 2105 * retransmit endpoint has been set, the media player will not decode and 2106 * render the media presentation locally. Instead, the player will attempt 2107 * to re-multiplex its media data using the Android@Home RTP profile and 2108 * re-transmit to the target endpoint. Receiver devices (which may be 2109 * either the same as the transmitting device or different devices) may 2110 * instantiate, prepare, and start a receiver player using a setDataSource 2111 * URL of the form... 2112 * 2113 * aahRX://<multicastIP>:<port> 2114 * 2115 * to receive, decode and render the re-transmitted content. 2116 * 2117 * setRetransmitEndpoint may only be called before setDataSource has been 2118 * called; while the player is in the Idle state. 2119 * 2120 * @param endpoint the address and UDP port of the re-transmission target or 2121 * null if no re-transmission is to be performed. 2122 * @throws IllegalStateException if it is called in an invalid state 2123 * @throws IllegalArgumentException if the retransmit endpoint is supplied, 2124 * but invalid. 2125 * 2126 * {@hide} pending API council 2127 */ 2128 public void setRetransmitEndpoint(InetSocketAddress endpoint) 2129 throws IllegalStateException, IllegalArgumentException 2130 { 2131 String addrString = null; 2132 int port = 0; 2133 2134 if (null != endpoint) { 2135 addrString = endpoint.getAddress().getHostAddress(); 2136 port = endpoint.getPort(); 2137 } 2138 2139 int ret = native_setRetransmitEndpoint(addrString, port); 2140 if (ret != 0) { 2141 throw new IllegalArgumentException("Illegal re-transmit endpoint; native ret " + ret); 2142 } 2143 } 2144 2145 private native final int native_setRetransmitEndpoint(String addrString, int port); 2146 2147 @Override 2148 protected void finalize() { native_finalize(); } 2149 2150 /* Do not change these values without updating their counterparts 2151 * in include/media/mediaplayer.h! 2152 */ 2153 private static final int MEDIA_NOP = 0; // interface test message 2154 private static final int MEDIA_PREPARED = 1; 2155 private static final int MEDIA_PLAYBACK_COMPLETE = 2; 2156 private static final int MEDIA_BUFFERING_UPDATE = 3; 2157 private static final int MEDIA_SEEK_COMPLETE = 4; 2158 private static final int MEDIA_SET_VIDEO_SIZE = 5; 2159 private static final int MEDIA_STARTED = 6; 2160 private static final int MEDIA_PAUSED = 7; 2161 private static final int MEDIA_STOPPED = 8; 2162 private static final int MEDIA_SKIPPED = 9; 2163 private static final int MEDIA_TIMED_TEXT = 99; 2164 private static final int MEDIA_ERROR = 100; 2165 private static final int MEDIA_INFO = 200; 2166 private static final int MEDIA_SUBTITLE_DATA = 201; 2167 2168 private TimeProvider mTimeProvider; 2169 2170 /** @hide */ 2171 public MediaTimeProvider getMediaTimeProvider() { 2172 if (mTimeProvider == null) { 2173 mTimeProvider = new TimeProvider(this); 2174 } 2175 return mTimeProvider; 2176 } 2177 2178 private class EventHandler extends Handler 2179 { 2180 private MediaPlayer mMediaPlayer; 2181 2182 public EventHandler(MediaPlayer mp, Looper looper) { 2183 super(looper); 2184 mMediaPlayer = mp; 2185 } 2186 2187 @Override 2188 public void handleMessage(Message msg) { 2189 if (mMediaPlayer.mNativeContext == 0) { 2190 Log.w(TAG, "mediaplayer went away with unhandled events"); 2191 return; 2192 } 2193 switch(msg.what) { 2194 case MEDIA_PREPARED: 2195 scanInternalSubtitleTracks(); 2196 if (mOnPreparedListener != null) 2197 mOnPreparedListener.onPrepared(mMediaPlayer); 2198 return; 2199 2200 case MEDIA_PLAYBACK_COMPLETE: 2201 if (mOnCompletionListener != null) 2202 mOnCompletionListener.onCompletion(mMediaPlayer); 2203 stayAwake(false); 2204 return; 2205 2206 case MEDIA_STOPPED: 2207 if (mTimeProvider != null) { 2208 mTimeProvider.onStopped(); 2209 } 2210 break; 2211 2212 case MEDIA_STARTED: 2213 case MEDIA_PAUSED: 2214 if (mTimeProvider != null) { 2215 mTimeProvider.onPaused(msg.what == MEDIA_PAUSED); 2216 } 2217 break; 2218 2219 case MEDIA_BUFFERING_UPDATE: 2220 if (mOnBufferingUpdateListener != null) 2221 mOnBufferingUpdateListener.onBufferingUpdate(mMediaPlayer, msg.arg1); 2222 return; 2223 2224 case MEDIA_SEEK_COMPLETE: 2225 if (mOnSeekCompleteListener != null) { 2226 mOnSeekCompleteListener.onSeekComplete(mMediaPlayer); 2227 } 2228 // fall through 2229 2230 case MEDIA_SKIPPED: 2231 if (mTimeProvider != null) { 2232 mTimeProvider.onSeekComplete(mMediaPlayer); 2233 } 2234 return; 2235 2236 case MEDIA_SET_VIDEO_SIZE: 2237 if (mOnVideoSizeChangedListener != null) 2238 mOnVideoSizeChangedListener.onVideoSizeChanged(mMediaPlayer, msg.arg1, msg.arg2); 2239 return; 2240 2241 case MEDIA_ERROR: 2242 Log.e(TAG, "Error (" + msg.arg1 + "," + msg.arg2 + ")"); 2243 boolean error_was_handled = false; 2244 if (mOnErrorListener != null) { 2245 error_was_handled = mOnErrorListener.onError(mMediaPlayer, msg.arg1, msg.arg2); 2246 } 2247 if (mOnCompletionListener != null && ! error_was_handled) { 2248 mOnCompletionListener.onCompletion(mMediaPlayer); 2249 } 2250 stayAwake(false); 2251 return; 2252 2253 case MEDIA_INFO: 2254 switch (msg.arg1) { 2255 case MEDIA_INFO_VIDEO_TRACK_LAGGING: 2256 Log.i(TAG, "Info (" + msg.arg1 + "," + msg.arg2 + ")"); 2257 break; 2258 case MEDIA_INFO_METADATA_UPDATE: 2259 scanInternalSubtitleTracks(); 2260 // fall through 2261 2262 case MEDIA_INFO_EXTERNAL_METADATA_UPDATE: 2263 msg.arg1 = MEDIA_INFO_METADATA_UPDATE; 2264 // update default track selection 2265 mSubtitleController.selectDefaultTrack(); 2266 break; 2267 } 2268 2269 if (mOnInfoListener != null) { 2270 mOnInfoListener.onInfo(mMediaPlayer, msg.arg1, msg.arg2); 2271 } 2272 // No real default action so far. 2273 return; 2274 case MEDIA_TIMED_TEXT: 2275 if (mOnTimedTextListener == null) 2276 return; 2277 if (msg.obj == null) { 2278 mOnTimedTextListener.onTimedText(mMediaPlayer, null); 2279 } else { 2280 if (msg.obj instanceof Parcel) { 2281 Parcel parcel = (Parcel)msg.obj; 2282 TimedText text = new TimedText(parcel); 2283 parcel.recycle(); 2284 mOnTimedTextListener.onTimedText(mMediaPlayer, text); 2285 } 2286 } 2287 return; 2288 2289 case MEDIA_SUBTITLE_DATA: 2290 if (mOnSubtitleDataListener == null) { 2291 return; 2292 } 2293 if (msg.obj instanceof Parcel) { 2294 Parcel parcel = (Parcel) msg.obj; 2295 SubtitleData data = new SubtitleData(parcel); 2296 parcel.recycle(); 2297 mOnSubtitleDataListener.onSubtitleData(mMediaPlayer, data); 2298 } 2299 return; 2300 2301 case MEDIA_NOP: // interface test message - ignore 2302 break; 2303 2304 default: 2305 Log.e(TAG, "Unknown message type " + msg.what); 2306 return; 2307 } 2308 } 2309 } 2310 2311 /* 2312 * Called from native code when an interesting event happens. This method 2313 * just uses the EventHandler system to post the event back to the main app thread. 2314 * We use a weak reference to the original MediaPlayer object so that the native 2315 * code is safe from the object disappearing from underneath it. (This is 2316 * the cookie passed to native_setup().) 2317 */ 2318 private static void postEventFromNative(Object mediaplayer_ref, 2319 int what, int arg1, int arg2, Object obj) 2320 { 2321 MediaPlayer mp = (MediaPlayer)((WeakReference)mediaplayer_ref).get(); 2322 if (mp == null) { 2323 return; 2324 } 2325 2326 if (what == MEDIA_INFO && arg1 == MEDIA_INFO_STARTED_AS_NEXT) { 2327 // this acquires the wakelock if needed, and sets the client side state 2328 mp.start(); 2329 } 2330 if (mp.mEventHandler != null) { 2331 Message m = mp.mEventHandler.obtainMessage(what, arg1, arg2, obj); 2332 mp.mEventHandler.sendMessage(m); 2333 } 2334 } 2335 2336 /** 2337 * Interface definition for a callback to be invoked when the media 2338 * source is ready for playback. 2339 */ 2340 public interface OnPreparedListener 2341 { 2342 /** 2343 * Called when the media file is ready for playback. 2344 * 2345 * @param mp the MediaPlayer that is ready for playback 2346 */ 2347 void onPrepared(MediaPlayer mp); 2348 } 2349 2350 /** 2351 * Register a callback to be invoked when the media source is ready 2352 * for playback. 2353 * 2354 * @param listener the callback that will be run 2355 */ 2356 public void setOnPreparedListener(OnPreparedListener listener) 2357 { 2358 mOnPreparedListener = listener; 2359 } 2360 2361 private OnPreparedListener mOnPreparedListener; 2362 2363 /** 2364 * Interface definition for a callback to be invoked when playback of 2365 * a media source has completed. 2366 */ 2367 public interface OnCompletionListener 2368 { 2369 /** 2370 * Called when the end of a media source is reached during playback. 2371 * 2372 * @param mp the MediaPlayer that reached the end of the file 2373 */ 2374 void onCompletion(MediaPlayer mp); 2375 } 2376 2377 /** 2378 * Register a callback to be invoked when the end of a media source 2379 * has been reached during playback. 2380 * 2381 * @param listener the callback that will be run 2382 */ 2383 public void setOnCompletionListener(OnCompletionListener listener) 2384 { 2385 mOnCompletionListener = listener; 2386 } 2387 2388 private OnCompletionListener mOnCompletionListener; 2389 2390 /** 2391 * Interface definition of a callback to be invoked indicating buffering 2392 * status of a media resource being streamed over the network. 2393 */ 2394 public interface OnBufferingUpdateListener 2395 { 2396 /** 2397 * Called to update status in buffering a media stream received through 2398 * progressive HTTP download. The received buffering percentage 2399 * indicates how much of the content has been buffered or played. 2400 * For example a buffering update of 80 percent when half the content 2401 * has already been played indicates that the next 30 percent of the 2402 * content to play has been buffered. 2403 * 2404 * @param mp the MediaPlayer the update pertains to 2405 * @param percent the percentage (0-100) of the content 2406 * that has been buffered or played thus far 2407 */ 2408 void onBufferingUpdate(MediaPlayer mp, int percent); 2409 } 2410 2411 /** 2412 * Register a callback to be invoked when the status of a network 2413 * stream's buffer has changed. 2414 * 2415 * @param listener the callback that will be run. 2416 */ 2417 public void setOnBufferingUpdateListener(OnBufferingUpdateListener listener) 2418 { 2419 mOnBufferingUpdateListener = listener; 2420 } 2421 2422 private OnBufferingUpdateListener mOnBufferingUpdateListener; 2423 2424 /** 2425 * Interface definition of a callback to be invoked indicating 2426 * the completion of a seek operation. 2427 */ 2428 public interface OnSeekCompleteListener 2429 { 2430 /** 2431 * Called to indicate the completion of a seek operation. 2432 * 2433 * @param mp the MediaPlayer that issued the seek operation 2434 */ 2435 public void onSeekComplete(MediaPlayer mp); 2436 } 2437 2438 /** 2439 * Register a callback to be invoked when a seek operation has been 2440 * completed. 2441 * 2442 * @param listener the callback that will be run 2443 */ 2444 public void setOnSeekCompleteListener(OnSeekCompleteListener listener) 2445 { 2446 mOnSeekCompleteListener = listener; 2447 } 2448 2449 private OnSeekCompleteListener mOnSeekCompleteListener; 2450 2451 /** 2452 * Interface definition of a callback to be invoked when the 2453 * video size is first known or updated 2454 */ 2455 public interface OnVideoSizeChangedListener 2456 { 2457 /** 2458 * Called to indicate the video size 2459 * 2460 * The video size (width and height) could be 0 if there was no video, 2461 * no display surface was set, or the value was not determined yet. 2462 * 2463 * @param mp the MediaPlayer associated with this callback 2464 * @param width the width of the video 2465 * @param height the height of the video 2466 */ 2467 public void onVideoSizeChanged(MediaPlayer mp, int width, int height); 2468 } 2469 2470 /** 2471 * Register a callback to be invoked when the video size is 2472 * known or updated. 2473 * 2474 * @param listener the callback that will be run 2475 */ 2476 public void setOnVideoSizeChangedListener(OnVideoSizeChangedListener listener) 2477 { 2478 mOnVideoSizeChangedListener = listener; 2479 } 2480 2481 private OnVideoSizeChangedListener mOnVideoSizeChangedListener; 2482 2483 /** 2484 * Interface definition of a callback to be invoked when a 2485 * timed text is available for display. 2486 */ 2487 public interface OnTimedTextListener 2488 { 2489 /** 2490 * Called to indicate an avaliable timed text 2491 * 2492 * @param mp the MediaPlayer associated with this callback 2493 * @param text the timed text sample which contains the text 2494 * needed to be displayed and the display format. 2495 */ 2496 public void onTimedText(MediaPlayer mp, TimedText text); 2497 } 2498 2499 /** 2500 * Register a callback to be invoked when a timed text is available 2501 * for display. 2502 * 2503 * @param listener the callback that will be run 2504 */ 2505 public void setOnTimedTextListener(OnTimedTextListener listener) 2506 { 2507 mOnTimedTextListener = listener; 2508 } 2509 2510 private OnTimedTextListener mOnTimedTextListener; 2511 2512 /** 2513 * Interface definition of a callback to be invoked when a 2514 * track has data available. 2515 * 2516 * @hide 2517 */ 2518 public interface OnSubtitleDataListener 2519 { 2520 public void onSubtitleData(MediaPlayer mp, SubtitleData data); 2521 } 2522 2523 /** 2524 * Register a callback to be invoked when a track has data available. 2525 * 2526 * @param listener the callback that will be run 2527 * 2528 * @hide 2529 */ 2530 public void setOnSubtitleDataListener(OnSubtitleDataListener listener) 2531 { 2532 mOnSubtitleDataListener = listener; 2533 } 2534 2535 private OnSubtitleDataListener mOnSubtitleDataListener; 2536 2537 /* Do not change these values without updating their counterparts 2538 * in include/media/mediaplayer.h! 2539 */ 2540 /** Unspecified media player error. 2541 * @see android.media.MediaPlayer.OnErrorListener 2542 */ 2543 public static final int MEDIA_ERROR_UNKNOWN = 1; 2544 2545 /** Media server died. In this case, the application must release the 2546 * MediaPlayer object and instantiate a new one. 2547 * @see android.media.MediaPlayer.OnErrorListener 2548 */ 2549 public static final int MEDIA_ERROR_SERVER_DIED = 100; 2550 2551 /** The video is streamed and its container is not valid for progressive 2552 * playback i.e the video's index (e.g moov atom) is not at the start of the 2553 * file. 2554 * @see android.media.MediaPlayer.OnErrorListener 2555 */ 2556 public static final int MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK = 200; 2557 2558 /** File or network related operation errors. */ 2559 public static final int MEDIA_ERROR_IO = -1004; 2560 /** Bitstream is not conforming to the related coding standard or file spec. */ 2561 public static final int MEDIA_ERROR_MALFORMED = -1007; 2562 /** Bitstream is conforming to the related coding standard or file spec, but 2563 * the media framework does not support the feature. */ 2564 public static final int MEDIA_ERROR_UNSUPPORTED = -1010; 2565 /** Some operation takes too long to complete, usually more than 3-5 seconds. */ 2566 public static final int MEDIA_ERROR_TIMED_OUT = -110; 2567 2568 /** 2569 * Interface definition of a callback to be invoked when there 2570 * has been an error during an asynchronous operation (other errors 2571 * will throw exceptions at method call time). 2572 */ 2573 public interface OnErrorListener 2574 { 2575 /** 2576 * Called to indicate an error. 2577 * 2578 * @param mp the MediaPlayer the error pertains to 2579 * @param what the type of error that has occurred: 2580 * <ul> 2581 * <li>{@link #MEDIA_ERROR_UNKNOWN} 2582 * <li>{@link #MEDIA_ERROR_SERVER_DIED} 2583 * </ul> 2584 * @param extra an extra code, specific to the error. Typically 2585 * implementation dependent. 2586 * <ul> 2587 * <li>{@link #MEDIA_ERROR_IO} 2588 * <li>{@link #MEDIA_ERROR_MALFORMED} 2589 * <li>{@link #MEDIA_ERROR_UNSUPPORTED} 2590 * <li>{@link #MEDIA_ERROR_TIMED_OUT} 2591 * </ul> 2592 * @return True if the method handled the error, false if it didn't. 2593 * Returning false, or not having an OnErrorListener at all, will 2594 * cause the OnCompletionListener to be called. 2595 */ 2596 boolean onError(MediaPlayer mp, int what, int extra); 2597 } 2598 2599 /** 2600 * Register a callback to be invoked when an error has happened 2601 * during an asynchronous operation. 2602 * 2603 * @param listener the callback that will be run 2604 */ 2605 public void setOnErrorListener(OnErrorListener listener) 2606 { 2607 mOnErrorListener = listener; 2608 } 2609 2610 private OnErrorListener mOnErrorListener; 2611 2612 2613 /* Do not change these values without updating their counterparts 2614 * in include/media/mediaplayer.h! 2615 */ 2616 /** Unspecified media player info. 2617 * @see android.media.MediaPlayer.OnInfoListener 2618 */ 2619 public static final int MEDIA_INFO_UNKNOWN = 1; 2620 2621 /** The player was started because it was used as the next player for another 2622 * player, which just completed playback. 2623 * @see android.media.MediaPlayer.OnInfoListener 2624 * @hide 2625 */ 2626 public static final int MEDIA_INFO_STARTED_AS_NEXT = 2; 2627 2628 /** The player just pushed the very first video frame for rendering. 2629 * @see android.media.MediaPlayer.OnInfoListener 2630 */ 2631 public static final int MEDIA_INFO_VIDEO_RENDERING_START = 3; 2632 2633 /** The video is too complex for the decoder: it can't decode frames fast 2634 * enough. Possibly only the audio plays fine at this stage. 2635 * @see android.media.MediaPlayer.OnInfoListener 2636 */ 2637 public static final int MEDIA_INFO_VIDEO_TRACK_LAGGING = 700; 2638 2639 /** MediaPlayer is temporarily pausing playback internally in order to 2640 * buffer more data. 2641 * @see android.media.MediaPlayer.OnInfoListener 2642 */ 2643 public static final int MEDIA_INFO_BUFFERING_START = 701; 2644 2645 /** MediaPlayer is resuming playback after filling buffers. 2646 * @see android.media.MediaPlayer.OnInfoListener 2647 */ 2648 public static final int MEDIA_INFO_BUFFERING_END = 702; 2649 2650 /** Bad interleaving means that a media has been improperly interleaved or 2651 * not interleaved at all, e.g has all the video samples first then all the 2652 * audio ones. Video is playing but a lot of disk seeks may be happening. 2653 * @see android.media.MediaPlayer.OnInfoListener 2654 */ 2655 public static final int MEDIA_INFO_BAD_INTERLEAVING = 800; 2656 2657 /** The media cannot be seeked (e.g live stream) 2658 * @see android.media.MediaPlayer.OnInfoListener 2659 */ 2660 public static final int MEDIA_INFO_NOT_SEEKABLE = 801; 2661 2662 /** A new set of metadata is available. 2663 * @see android.media.MediaPlayer.OnInfoListener 2664 */ 2665 public static final int MEDIA_INFO_METADATA_UPDATE = 802; 2666 2667 /** A new set of external-only metadata is available. Used by 2668 * JAVA framework to avoid triggering track scanning. 2669 * @hide 2670 */ 2671 public static final int MEDIA_INFO_EXTERNAL_METADATA_UPDATE = 803; 2672 2673 /** Failed to handle timed text track properly. 2674 * @see android.media.MediaPlayer.OnInfoListener 2675 * 2676 * {@hide} 2677 */ 2678 public static final int MEDIA_INFO_TIMED_TEXT_ERROR = 900; 2679 2680 /** Subtitle track was not supported by the media framework. 2681 * @see android.media.MediaPlayer.OnInfoListener 2682 */ 2683 public static final int MEDIA_INFO_UNSUPPORTED_SUBTITLE = 901; 2684 2685 /** Reading the subtitle track takes too long. 2686 * @see android.media.MediaPlayer.OnInfoListener 2687 */ 2688 public static final int MEDIA_INFO_SUBTITLE_TIMED_OUT = 902; 2689 2690 /** 2691 * Interface definition of a callback to be invoked to communicate some 2692 * info and/or warning about the media or its playback. 2693 */ 2694 public interface OnInfoListener 2695 { 2696 /** 2697 * Called to indicate an info or a warning. 2698 * 2699 * @param mp the MediaPlayer the info pertains to. 2700 * @param what the type of info or warning. 2701 * <ul> 2702 * <li>{@link #MEDIA_INFO_UNKNOWN} 2703 * <li>{@link #MEDIA_INFO_VIDEO_TRACK_LAGGING} 2704 * <li>{@link #MEDIA_INFO_VIDEO_RENDERING_START} 2705 * <li>{@link #MEDIA_INFO_BUFFERING_START} 2706 * <li>{@link #MEDIA_INFO_BUFFERING_END} 2707 * <li>{@link #MEDIA_INFO_BAD_INTERLEAVING} 2708 * <li>{@link #MEDIA_INFO_NOT_SEEKABLE} 2709 * <li>{@link #MEDIA_INFO_METADATA_UPDATE} 2710 * <li>{@link #MEDIA_INFO_UNSUPPORTED_SUBTITLE} 2711 * <li>{@link #MEDIA_INFO_SUBTITLE_TIMED_OUT} 2712 * </ul> 2713 * @param extra an extra code, specific to the info. Typically 2714 * implementation dependent. 2715 * @return True if the method handled the info, false if it didn't. 2716 * Returning false, or not having an OnErrorListener at all, will 2717 * cause the info to be discarded. 2718 */ 2719 boolean onInfo(MediaPlayer mp, int what, int extra); 2720 } 2721 2722 /** 2723 * Register a callback to be invoked when an info/warning is available. 2724 * 2725 * @param listener the callback that will be run 2726 */ 2727 public void setOnInfoListener(OnInfoListener listener) 2728 { 2729 mOnInfoListener = listener; 2730 } 2731 2732 private OnInfoListener mOnInfoListener; 2733 2734 /* 2735 * Test whether a given video scaling mode is supported. 2736 */ 2737 private boolean isVideoScalingModeSupported(int mode) { 2738 return (mode == VIDEO_SCALING_MODE_SCALE_TO_FIT || 2739 mode == VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING); 2740 } 2741 2742 private Context mProxyContext = null; 2743 private ProxyReceiver mProxyReceiver = null; 2744 2745 private void setupProxyListener(Context context) { 2746 IntentFilter filter = new IntentFilter(); 2747 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 2748 mProxyReceiver = new ProxyReceiver(); 2749 mProxyContext = context; 2750 2751 Intent currentProxy = 2752 context.getApplicationContext().registerReceiver(mProxyReceiver, filter); 2753 2754 if (currentProxy != null) { 2755 handleProxyBroadcast(currentProxy); 2756 } 2757 } 2758 2759 private void disableProxyListener() { 2760 if (mProxyReceiver == null) { 2761 return; 2762 } 2763 2764 Context appContext = mProxyContext.getApplicationContext(); 2765 if (appContext != null) { 2766 appContext.unregisterReceiver(mProxyReceiver); 2767 } 2768 2769 mProxyReceiver = null; 2770 mProxyContext = null; 2771 } 2772 2773 private void handleProxyBroadcast(Intent intent) { 2774 ProxyProperties props = 2775 (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 2776 2777 if (props == null || props.getHost() == null) { 2778 updateProxyConfig(null); 2779 } else { 2780 updateProxyConfig(props); 2781 } 2782 } 2783 2784 private class ProxyReceiver extends BroadcastReceiver { 2785 @Override 2786 public void onReceive(Context context, Intent intent) { 2787 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 2788 handleProxyBroadcast(intent); 2789 } 2790 } 2791 } 2792 2793 private native void updateProxyConfig(ProxyProperties props); 2794 2795 /** @hide */ 2796 static class TimeProvider implements MediaPlayer.OnSeekCompleteListener, 2797 MediaTimeProvider { 2798 private static final String TAG = "MTP"; 2799 private static final long MAX_NS_WITHOUT_POSITION_CHECK = 5000000000L; 2800 private static final long MAX_EARLY_CALLBACK_US = 1000; 2801 private static final long TIME_ADJUSTMENT_RATE = 2; /* meaning 1/2 */ 2802 private long mLastTimeUs = 0; 2803 private MediaPlayer mPlayer; 2804 private boolean mPaused = true; 2805 private boolean mStopped = true; 2806 private long mLastReportedTime; 2807 private long mTimeAdjustment; 2808 // since we are expecting only a handful listeners per stream, there is 2809 // no need for log(N) search performance 2810 private MediaTimeProvider.OnMediaTimeListener mListeners[]; 2811 private long mTimes[]; 2812 private long mLastNanoTime; 2813 private Handler mEventHandler; 2814 private boolean mRefresh = false; 2815 private boolean mPausing = false; 2816 private boolean mSeeking = false; 2817 private static final int NOTIFY = 1; 2818 private static final int NOTIFY_TIME = 0; 2819 private static final int REFRESH_AND_NOTIFY_TIME = 1; 2820 private static final int NOTIFY_STOP = 2; 2821 private static final int NOTIFY_SEEK = 3; 2822 private HandlerThread mHandlerThread; 2823 2824 /** @hide */ 2825 public boolean DEBUG = false; 2826 2827 public TimeProvider(MediaPlayer mp) { 2828 mPlayer = mp; 2829 try { 2830 getCurrentTimeUs(true, false); 2831 } catch (IllegalStateException e) { 2832 // we assume starting position 2833 mRefresh = true; 2834 } 2835 2836 Looper looper; 2837 if ((looper = Looper.myLooper()) == null && 2838 (looper = Looper.getMainLooper()) == null) { 2839 // Create our own looper here in case MP was created without one 2840 mHandlerThread = new HandlerThread("MediaPlayerMTPEventThread", 2841 Process.THREAD_PRIORITY_FOREGROUND); 2842 mHandlerThread.start(); 2843 looper = mHandlerThread.getLooper(); 2844 } 2845 mEventHandler = new EventHandler(looper); 2846 2847 mListeners = new MediaTimeProvider.OnMediaTimeListener[0]; 2848 mTimes = new long[0]; 2849 mLastTimeUs = 0; 2850 mTimeAdjustment = 0; 2851 } 2852 2853 private void scheduleNotification(int type, long delayUs) { 2854 // ignore time notifications until seek is handled 2855 if (mSeeking && 2856 (type == NOTIFY_TIME || type == REFRESH_AND_NOTIFY_TIME)) { 2857 return; 2858 } 2859 2860 if (DEBUG) Log.v(TAG, "scheduleNotification " + type + " in " + delayUs); 2861 mEventHandler.removeMessages(NOTIFY); 2862 Message msg = mEventHandler.obtainMessage(NOTIFY, type, 0); 2863 mEventHandler.sendMessageDelayed(msg, (int) (delayUs / 1000)); 2864 } 2865 2866 /** @hide */ 2867 public void close() { 2868 mEventHandler.removeMessages(NOTIFY); 2869 if (mHandlerThread != null) { 2870 mHandlerThread.quitSafely(); 2871 mHandlerThread = null; 2872 } 2873 } 2874 2875 /** @hide */ 2876 protected void finalize() { 2877 if (mHandlerThread != null) { 2878 mHandlerThread.quitSafely(); 2879 } 2880 } 2881 2882 /** @hide */ 2883 public void onPaused(boolean paused) { 2884 synchronized(this) { 2885 if (DEBUG) Log.d(TAG, "onPaused: " + paused); 2886 if (mStopped) { // handle as seek if we were stopped 2887 mStopped = false; 2888 mSeeking = true; 2889 scheduleNotification(NOTIFY_SEEK, 0 /* delay */); 2890 } else { 2891 mPausing = paused; // special handling if player disappeared 2892 mSeeking = false; 2893 scheduleNotification(REFRESH_AND_NOTIFY_TIME, 0 /* delay */); 2894 } 2895 } 2896 } 2897 2898 /** @hide */ 2899 public void onStopped() { 2900 synchronized(this) { 2901 if (DEBUG) Log.d(TAG, "onStopped"); 2902 mPaused = true; 2903 mStopped = true; 2904 mSeeking = false; 2905 scheduleNotification(NOTIFY_STOP, 0 /* delay */); 2906 } 2907 } 2908 2909 /** @hide */ 2910 @Override 2911 public void onSeekComplete(MediaPlayer mp) { 2912 synchronized(this) { 2913 mStopped = false; 2914 mSeeking = true; 2915 scheduleNotification(NOTIFY_SEEK, 0 /* delay */); 2916 } 2917 } 2918 2919 /** @hide */ 2920 public void onNewPlayer() { 2921 if (mRefresh) { 2922 synchronized(this) { 2923 mStopped = false; 2924 mSeeking = true; 2925 scheduleNotification(NOTIFY_SEEK, 0 /* delay */); 2926 } 2927 } 2928 } 2929 2930 private synchronized void notifySeek() { 2931 mSeeking = false; 2932 try { 2933 long timeUs = getCurrentTimeUs(true, false); 2934 if (DEBUG) Log.d(TAG, "onSeekComplete at " + timeUs); 2935 2936 for (MediaTimeProvider.OnMediaTimeListener listener: mListeners) { 2937 if (listener == null) { 2938 break; 2939 } 2940 listener.onSeek(timeUs); 2941 } 2942 } catch (IllegalStateException e) { 2943 // we should not be there, but at least signal pause 2944 if (DEBUG) Log.d(TAG, "onSeekComplete but no player"); 2945 mPausing = true; // special handling if player disappeared 2946 notifyTimedEvent(false /* refreshTime */); 2947 } 2948 } 2949 2950 private synchronized void notifyStop() { 2951 for (MediaTimeProvider.OnMediaTimeListener listener: mListeners) { 2952 if (listener == null) { 2953 break; 2954 } 2955 listener.onStop(); 2956 } 2957 } 2958 2959 private int registerListener(MediaTimeProvider.OnMediaTimeListener listener) { 2960 int i = 0; 2961 for (; i < mListeners.length; i++) { 2962 if (mListeners[i] == listener || mListeners[i] == null) { 2963 break; 2964 } 2965 } 2966 2967 // new listener 2968 if (i >= mListeners.length) { 2969 MediaTimeProvider.OnMediaTimeListener[] newListeners = 2970 new MediaTimeProvider.OnMediaTimeListener[i + 1]; 2971 long[] newTimes = new long[i + 1]; 2972 System.arraycopy(mListeners, 0, newListeners, 0, mListeners.length); 2973 System.arraycopy(mTimes, 0, newTimes, 0, mTimes.length); 2974 mListeners = newListeners; 2975 mTimes = newTimes; 2976 } 2977 2978 if (mListeners[i] == null) { 2979 mListeners[i] = listener; 2980 mTimes[i] = MediaTimeProvider.NO_TIME; 2981 } 2982 return i; 2983 } 2984 2985 public void notifyAt( 2986 long timeUs, MediaTimeProvider.OnMediaTimeListener listener) { 2987 synchronized(this) { 2988 if (DEBUG) Log.d(TAG, "notifyAt " + timeUs); 2989 mTimes[registerListener(listener)] = timeUs; 2990 scheduleNotification(NOTIFY_TIME, 0 /* delay */); 2991 } 2992 } 2993 2994 public void scheduleUpdate(MediaTimeProvider.OnMediaTimeListener listener) { 2995 synchronized(this) { 2996 if (DEBUG) Log.d(TAG, "scheduleUpdate"); 2997 int i = registerListener(listener); 2998 2999 if (mStopped) { 3000 scheduleNotification(NOTIFY_STOP, 0 /* delay */); 3001 } else { 3002 mTimes[i] = 0; 3003 scheduleNotification(NOTIFY_TIME, 0 /* delay */); 3004 } 3005 } 3006 } 3007 3008 public void cancelNotifications( 3009 MediaTimeProvider.OnMediaTimeListener listener) { 3010 synchronized(this) { 3011 int i = 0; 3012 for (; i < mListeners.length; i++) { 3013 if (mListeners[i] == listener) { 3014 System.arraycopy(mListeners, i + 1, 3015 mListeners, i, mListeners.length - i - 1); 3016 System.arraycopy(mTimes, i + 1, 3017 mTimes, i, mTimes.length - i - 1); 3018 mListeners[mListeners.length - 1] = null; 3019 mTimes[mTimes.length - 1] = NO_TIME; 3020 break; 3021 } else if (mListeners[i] == null) { 3022 break; 3023 } 3024 } 3025 3026 scheduleNotification(NOTIFY_TIME, 0 /* delay */); 3027 } 3028 } 3029 3030 private synchronized void notifyTimedEvent(boolean refreshTime) { 3031 // figure out next callback 3032 long nowUs; 3033 try { 3034 nowUs = getCurrentTimeUs(refreshTime, true); 3035 } catch (IllegalStateException e) { 3036 // assume we paused until new player arrives 3037 mRefresh = true; 3038 mPausing = true; // this ensures that call succeeds 3039 nowUs = getCurrentTimeUs(refreshTime, true); 3040 } 3041 long nextTimeUs = nowUs; 3042 3043 if (mSeeking) { 3044 // skip timed-event notifications until seek is complete 3045 return; 3046 } 3047 3048 if (DEBUG) { 3049 StringBuilder sb = new StringBuilder(); 3050 sb.append("notifyTimedEvent(").append(mLastTimeUs).append(" -> ") 3051 .append(nowUs).append(") from {"); 3052 boolean first = true; 3053 for (long time: mTimes) { 3054 if (time == NO_TIME) { 3055 continue; 3056 } 3057 if (!first) sb.append(", "); 3058 sb.append(time); 3059 first = false; 3060 } 3061 sb.append("}"); 3062 Log.d(TAG, sb.toString()); 3063 } 3064 3065 Vector<MediaTimeProvider.OnMediaTimeListener> activatedListeners = 3066 new Vector<MediaTimeProvider.OnMediaTimeListener>(); 3067 for (int ix = 0; ix < mTimes.length; ix++) { 3068 if (mListeners[ix] == null) { 3069 break; 3070 } 3071 if (mTimes[ix] <= NO_TIME) { 3072 // ignore, unless we were stopped 3073 } else if (mTimes[ix] <= nowUs + MAX_EARLY_CALLBACK_US) { 3074 activatedListeners.add(mListeners[ix]); 3075 if (DEBUG) Log.d(TAG, "removed"); 3076 mTimes[ix] = NO_TIME; 3077 } else if (nextTimeUs == nowUs || mTimes[ix] < nextTimeUs) { 3078 nextTimeUs = mTimes[ix]; 3079 } 3080 } 3081 3082 if (nextTimeUs > nowUs && !mPaused) { 3083 // schedule callback at nextTimeUs 3084 if (DEBUG) Log.d(TAG, "scheduling for " + nextTimeUs + " and " + nowUs); 3085 scheduleNotification(NOTIFY_TIME, nextTimeUs - nowUs); 3086 } else { 3087 mEventHandler.removeMessages(NOTIFY); 3088 // no more callbacks 3089 } 3090 3091 for (MediaTimeProvider.OnMediaTimeListener listener: activatedListeners) { 3092 listener.onTimedEvent(nowUs); 3093 } 3094 } 3095 3096 private long getEstimatedTime(long nanoTime, boolean monotonic) { 3097 if (mPaused) { 3098 mLastReportedTime = mLastTimeUs + mTimeAdjustment; 3099 } else { 3100 long timeSinceRead = (nanoTime - mLastNanoTime) / 1000; 3101 mLastReportedTime = mLastTimeUs + timeSinceRead; 3102 if (mTimeAdjustment > 0) { 3103 long adjustment = 3104 mTimeAdjustment - timeSinceRead / TIME_ADJUSTMENT_RATE; 3105 if (adjustment <= 0) { 3106 mTimeAdjustment = 0; 3107 } else { 3108 mLastReportedTime += adjustment; 3109 } 3110 } 3111 } 3112 return mLastReportedTime; 3113 } 3114 3115 public long getCurrentTimeUs(boolean refreshTime, boolean monotonic) 3116 throws IllegalStateException { 3117 synchronized (this) { 3118 // we always refresh the time when the paused-state changes, because 3119 // we expect to have received the pause-change event delayed. 3120 if (mPaused && !refreshTime) { 3121 return mLastReportedTime; 3122 } 3123 3124 long nanoTime = System.nanoTime(); 3125 if (refreshTime || 3126 nanoTime >= mLastNanoTime + MAX_NS_WITHOUT_POSITION_CHECK) { 3127 try { 3128 mLastTimeUs = mPlayer.getCurrentPosition() * 1000; 3129 mPaused = !mPlayer.isPlaying(); 3130 if (DEBUG) Log.v(TAG, (mPaused ? "paused" : "playing") + " at " + mLastTimeUs); 3131 } catch (IllegalStateException e) { 3132 if (mPausing) { 3133 // if we were pausing, get last estimated timestamp 3134 mPausing = false; 3135 getEstimatedTime(nanoTime, monotonic); 3136 mPaused = true; 3137 if (DEBUG) Log.d(TAG, "illegal state, but pausing: estimating at " + mLastReportedTime); 3138 return mLastReportedTime; 3139 } 3140 // TODO get time when prepared 3141 throw e; 3142 } 3143 mLastNanoTime = nanoTime; 3144 if (monotonic && mLastTimeUs < mLastReportedTime) { 3145 /* have to adjust time */ 3146 mTimeAdjustment = mLastReportedTime - mLastTimeUs; 3147 if (mTimeAdjustment > 1000000) { 3148 // schedule seeked event if time jumped significantly 3149 // TODO: do this properly by introducing an exception 3150 mStopped = false; 3151 mSeeking = true; 3152 scheduleNotification(NOTIFY_SEEK, 0 /* delay */); 3153 } 3154 } else { 3155 mTimeAdjustment = 0; 3156 } 3157 } 3158 3159 return getEstimatedTime(nanoTime, monotonic); 3160 } 3161 } 3162 3163 private class EventHandler extends Handler { 3164 public EventHandler(Looper looper) { 3165 super(looper); 3166 } 3167 3168 @Override 3169 public void handleMessage(Message msg) { 3170 if (msg.what == NOTIFY) { 3171 switch (msg.arg1) { 3172 case NOTIFY_TIME: 3173 notifyTimedEvent(false /* refreshTime */); 3174 break; 3175 case REFRESH_AND_NOTIFY_TIME: 3176 notifyTimedEvent(true /* refreshTime */); 3177 break; 3178 case NOTIFY_STOP: 3179 notifyStop(); 3180 break; 3181 case NOTIFY_SEEK: 3182 notifySeek(); 3183 break; 3184 } 3185 } 3186 } 3187 } 3188 } 3189} 3190