MediaPlayer.java revision d5f9fa574da2ee210ac86154ab0aea9fee5e8278
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.Looper; 30import android.os.Message; 31import android.os.Parcel; 32import android.os.Parcelable; 33import android.os.ParcelFileDescriptor; 34import android.os.PowerManager; 35import android.util.Log; 36import android.view.Surface; 37import android.view.SurfaceHolder; 38import android.graphics.Bitmap; 39import android.graphics.SurfaceTexture; 40import android.media.AudioManager; 41 42import java.io.File; 43import java.io.FileDescriptor; 44import java.io.FileInputStream; 45import java.io.IOException; 46import java.net.InetSocketAddress; 47import java.util.Map; 48import java.util.Set; 49import java.lang.ref.WeakReference; 50 51/** 52 * MediaPlayer class can be used to control playback 53 * of audio/video files and streams. An example on how to use the methods in 54 * this class can be found in {@link android.widget.VideoView}. 55 * 56 * <p>Topics covered here are: 57 * <ol> 58 * <li><a href="#StateDiagram">State Diagram</a> 59 * <li><a href="#Valid_and_Invalid_States">Valid and Invalid States</a> 60 * <li><a href="#Permissions">Permissions</a> 61 * <li><a href="#Callbacks">Register informational and error callbacks</a> 62 * </ol> 63 * 64 * <div class="special reference"> 65 * <h3>Developer Guides</h3> 66 * <p>For more information about how to use MediaPlayer, read the 67 * <a href="{@docRoot}guide/topics/media/mediaplayer.html">Media Playback</a> developer guide.</p> 68 * </div> 69 * 70 * <a name="StateDiagram"></a> 71 * <h3>State Diagram</h3> 72 * 73 * <p>Playback control of audio/video files and streams is managed as a state 74 * machine. The following diagram shows the life cycle and the states of a 75 * MediaPlayer object driven by the supported playback control operations. 76 * The ovals represent the states a MediaPlayer object may reside 77 * in. The arcs represent the playback control operations that drive the object 78 * state transition. There are two types of arcs. The arcs with a single arrow 79 * head represent synchronous method calls, while those with 80 * a double arrow head represent asynchronous method calls.</p> 81 * 82 * <p><img src="../../../images/mediaplayer_state_diagram.gif" 83 * alt="MediaPlayer State diagram" 84 * border="0" /></p> 85 * 86 * <p>From this state diagram, one can see that a MediaPlayer object has the 87 * following states:</p> 88 * <ul> 89 * <li>When a MediaPlayer object is just created using <code>new</code> or 90 * after {@link #reset()} is called, it is in the <em>Idle</em> state; and after 91 * {@link #release()} is called, it is in the <em>End</em> state. Between these 92 * two states is the life cycle of the MediaPlayer object. 93 * <ul> 94 * <li>There is a subtle but important difference between a newly constructed 95 * MediaPlayer object and the MediaPlayer object after {@link #reset()} 96 * is called. It is a programming error to invoke methods such 97 * as {@link #getCurrentPosition()}, 98 * {@link #getDuration()}, {@link #getVideoHeight()}, 99 * {@link #getVideoWidth()}, {@link #setAudioStreamType(int)}, 100 * {@link #setLooping(boolean)}, 101 * {@link #setVolume(float, float)}, {@link #pause()}, {@link #start()}, 102 * {@link #stop()}, {@link #seekTo(int)}, {@link #prepare()} or 103 * {@link #prepareAsync()} in the <em>Idle</em> state for both cases. If any of these 104 * methods is called right after a MediaPlayer object is constructed, 105 * the user supplied callback method OnErrorListener.onError() won't be 106 * called by the internal player engine and the object state remains 107 * unchanged; but if these methods are called right after {@link #reset()}, 108 * the user supplied callback method OnErrorListener.onError() will be 109 * invoked by the internal player engine and the object will be 110 * transfered to the <em>Error</em> state. </li> 111 * <li>It is also recommended that once 112 * a MediaPlayer object is no longer being used, call {@link #release()} immediately 113 * so that resources used by the internal player engine associated with the 114 * MediaPlayer object can be released immediately. Resource may include 115 * singleton resources such as hardware acceleration components and 116 * failure to call {@link #release()} may cause subsequent instances of 117 * MediaPlayer objects to fallback to software implementations or fail 118 * altogether. Once the MediaPlayer 119 * object is in the <em>End</em> state, it can no longer be used and 120 * there is no way to bring it back to any other state. </li> 121 * <li>Furthermore, 122 * the MediaPlayer objects created using <code>new</code> is in the 123 * <em>Idle</em> state, while those created with one 124 * of the overloaded convenient <code>create</code> methods are <em>NOT</em> 125 * in the <em>Idle</em> state. In fact, the objects are in the <em>Prepared</em> 126 * state if the creation using <code>create</code> method is successful. 127 * </li> 128 * </ul> 129 * </li> 130 * <li>In general, some playback control operation may fail due to various 131 * reasons, such as unsupported audio/video format, poorly interleaved 132 * audio/video, resolution too high, streaming timeout, and the like. 133 * Thus, error reporting and recovery is an important concern under 134 * these circumstances. Sometimes, due to programming errors, invoking a playback 135 * control operation in an invalid state may also occur. Under all these 136 * error conditions, the internal player engine invokes a user supplied 137 * OnErrorListener.onError() method if an OnErrorListener has been 138 * registered beforehand via 139 * {@link #setOnErrorListener(android.media.MediaPlayer.OnErrorListener)}. 140 * <ul> 141 * <li>It is important to note that once an error occurs, the 142 * MediaPlayer object enters the <em>Error</em> state (except as noted 143 * above), even if an error listener has not been registered by the application.</li> 144 * <li>In order to reuse a MediaPlayer object that is in the <em> 145 * Error</em> state and recover from the error, 146 * {@link #reset()} can be called to restore the object to its <em>Idle</em> 147 * state.</li> 148 * <li>It is good programming practice to have your application 149 * register a OnErrorListener to look out for error notifications from 150 * the internal player engine.</li> 151 * <li>IllegalStateException is 152 * thrown to prevent programming errors such as calling {@link #prepare()}, 153 * {@link #prepareAsync()}, or one of the overloaded <code>setDataSource 154 * </code> methods in an invalid state. </li> 155 * </ul> 156 * </li> 157 * <li>Calling 158 * {@link #setDataSource(FileDescriptor)}, or 159 * {@link #setDataSource(String)}, or 160 * {@link #setDataSource(Context, Uri)}, or 161 * {@link #setDataSource(FileDescriptor, long, long)} transfers a 162 * MediaPlayer object in the <em>Idle</em> state to the 163 * <em>Initialized</em> state. 164 * <ul> 165 * <li>An IllegalStateException is thrown if 166 * setDataSource() is called in any other state.</li> 167 * <li>It is good programming 168 * practice to always look out for <code>IllegalArgumentException</code> 169 * and <code>IOException</code> that may be thrown from the overloaded 170 * <code>setDataSource</code> methods.</li> 171 * </ul> 172 * </li> 173 * <li>A MediaPlayer object must first enter the <em>Prepared</em> state 174 * before playback can be started. 175 * <ul> 176 * <li>There are two ways (synchronous vs. 177 * asynchronous) that the <em>Prepared</em> state can be reached: 178 * either a call to {@link #prepare()} (synchronous) which 179 * transfers the object to the <em>Prepared</em> state once the method call 180 * returns, or a call to {@link #prepareAsync()} (asynchronous) which 181 * first transfers the object to the <em>Preparing</em> state after the 182 * call returns (which occurs almost right way) while the internal 183 * player engine continues working on the rest of preparation work 184 * until the preparation work completes. When the preparation completes or when {@link #prepare()} call returns, 185 * the internal player engine then calls a user supplied callback method, 186 * onPrepared() of the OnPreparedListener interface, if an 187 * OnPreparedListener is registered beforehand via {@link 188 * #setOnPreparedListener(android.media.MediaPlayer.OnPreparedListener)}.</li> 189 * <li>It is important to note that 190 * the <em>Preparing</em> state is a transient state, and the behavior 191 * of calling any method with side effect while a MediaPlayer object is 192 * in the <em>Preparing</em> state is undefined.</li> 193 * <li>An IllegalStateException is 194 * thrown if {@link #prepare()} or {@link #prepareAsync()} is called in 195 * any other state.</li> 196 * <li>While in the <em>Prepared</em> state, properties 197 * such as audio/sound volume, screenOnWhilePlaying, looping can be 198 * adjusted by invoking the corresponding set methods.</li> 199 * </ul> 200 * </li> 201 * <li>To start the playback, {@link #start()} must be called. After 202 * {@link #start()} returns successfully, the MediaPlayer object is in the 203 * <em>Started</em> state. {@link #isPlaying()} can be called to test 204 * whether the MediaPlayer object is in the <em>Started</em> state. 205 * <ul> 206 * <li>While in the <em>Started</em> state, the internal player engine calls 207 * a user supplied OnBufferingUpdateListener.onBufferingUpdate() callback 208 * method if a OnBufferingUpdateListener has been registered beforehand 209 * via {@link #setOnBufferingUpdateListener(OnBufferingUpdateListener)}. 210 * This callback allows applications to keep track of the buffering status 211 * while streaming audio/video.</li> 212 * <li>Calling {@link #start()} has not effect 213 * on a MediaPlayer object that is already in the <em>Started</em> state.</li> 214 * </ul> 215 * </li> 216 * <li>Playback can be paused and stopped, and the current playback position 217 * can be adjusted. Playback can be paused via {@link #pause()}. When the call to 218 * {@link #pause()} returns, the MediaPlayer object enters the 219 * <em>Paused</em> state. Note that the transition from the <em>Started</em> 220 * state to the <em>Paused</em> state and vice versa happens 221 * asynchronously in the player engine. It may take some time before 222 * the state is updated in calls to {@link #isPlaying()}, and it can be 223 * a number of seconds in the case of streamed content. 224 * <ul> 225 * <li>Calling {@link #start()} to resume playback for a paused 226 * MediaPlayer object, and the resumed playback 227 * position is the same as where it was paused. When the call to 228 * {@link #start()} returns, the paused MediaPlayer object goes back to 229 * the <em>Started</em> state.</li> 230 * <li>Calling {@link #pause()} has no effect on 231 * a MediaPlayer object that is already in the <em>Paused</em> state.</li> 232 * </ul> 233 * </li> 234 * <li>Calling {@link #stop()} stops playback and causes a 235 * MediaPlayer in the <em>Started</em>, <em>Paused</em>, <em>Prepared 236 * </em> or <em>PlaybackCompleted</em> state to enter the 237 * <em>Stopped</em> state. 238 * <ul> 239 * <li>Once in the <em>Stopped</em> state, playback cannot be started 240 * until {@link #prepare()} or {@link #prepareAsync()} are called to set 241 * the MediaPlayer object to the <em>Prepared</em> state again.</li> 242 * <li>Calling {@link #stop()} has no effect on a MediaPlayer 243 * object that is already in the <em>Stopped</em> state.</li> 244 * </ul> 245 * </li> 246 * <li>The playback position can be adjusted with a call to 247 * {@link #seekTo(int)}. 248 * <ul> 249 * <li>Although the asynchronuous {@link #seekTo(int)} 250 * call returns right way, the actual seek operation may take a while to 251 * finish, especially for audio/video being streamed. When the actual 252 * seek operation completes, the internal player engine calls a user 253 * supplied OnSeekComplete.onSeekComplete() if an OnSeekCompleteListener 254 * has been registered beforehand via 255 * {@link #setOnSeekCompleteListener(OnSeekCompleteListener)}.</li> 256 * <li>Please 257 * note that {@link #seekTo(int)} can also be called in the other states, 258 * such as <em>Prepared</em>, <em>Paused</em> and <em>PlaybackCompleted 259 * </em> state.</li> 260 * <li>Furthermore, the actual current playback position 261 * can be retrieved with a call to {@link #getCurrentPosition()}, which 262 * is helpful for applications such as a Music player that need to keep 263 * track of the playback progress.</li> 264 * </ul> 265 * </li> 266 * <li>When the playback reaches the end of stream, the playback completes. 267 * <ul> 268 * <li>If the looping mode was being set to <var>true</var>with 269 * {@link #setLooping(boolean)}, the MediaPlayer object shall remain in 270 * the <em>Started</em> state.</li> 271 * <li>If the looping mode was set to <var>false 272 * </var>, the player engine calls a user supplied callback method, 273 * OnCompletion.onCompletion(), if a OnCompletionListener is registered 274 * beforehand via {@link #setOnCompletionListener(OnCompletionListener)}. 275 * The invoke of the callback signals that the object is now in the <em> 276 * PlaybackCompleted</em> state.</li> 277 * <li>While in the <em>PlaybackCompleted</em> 278 * state, calling {@link #start()} can restart the playback from the 279 * beginning of the audio/video source.</li> 280 * </ul> 281 * 282 * 283 * <a name="Valid_and_Invalid_States"></a> 284 * <h3>Valid and invalid states</h3> 285 * 286 * <table border="0" cellspacing="0" cellpadding="0"> 287 * <tr><td>Method Name </p></td> 288 * <td>Valid Sates </p></td> 289 * <td>Invalid States </p></td> 290 * <td>Comments </p></td></tr> 291 * <tr><td>attachAuxEffect </p></td> 292 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted} </p></td> 293 * <td>{Idle, Error} </p></td> 294 * <td>This method must be called after setDataSource. 295 * Calling it does not change the object state. </p></td></tr> 296 * <tr><td>getAudioSessionId </p></td> 297 * <td>any </p></td> 298 * <td>{} </p></td> 299 * <td>This method can be called in any state and calling it does not change 300 * the object state. </p></td></tr> 301 * <tr><td>getCurrentPosition </p></td> 302 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 303 * PlaybackCompleted} </p></td> 304 * <td>{Error}</p></td> 305 * <td>Successful invoke of this method in a valid state does not change the 306 * state. Calling this method in an invalid state transfers the object 307 * to the <em>Error</em> state. </p></td></tr> 308 * <tr><td>getDuration </p></td> 309 * <td>{Prepared, Started, Paused, Stopped, PlaybackCompleted} </p></td> 310 * <td>{Idle, Initialized, Error} </p></td> 311 * <td>Successful invoke of this method in a valid state does not change the 312 * state. Calling this method in an invalid state transfers the object 313 * to the <em>Error</em> state. </p></td></tr> 314 * <tr><td>getVideoHeight </p></td> 315 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 316 * PlaybackCompleted}</p></td> 317 * <td>{Error}</p></td> 318 * <td>Successful invoke of this method in a valid state does not change the 319 * state. Calling this method in an invalid state transfers the object 320 * to the <em>Error</em> state. </p></td></tr> 321 * <tr><td>getVideoWidth </p></td> 322 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 323 * PlaybackCompleted}</p></td> 324 * <td>{Error}</p></td> 325 * <td>Successful invoke of this method in a valid state does not change 326 * the state. Calling this method in an invalid state transfers the 327 * object to the <em>Error</em> state. </p></td></tr> 328 * <tr><td>isPlaying </p></td> 329 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 330 * PlaybackCompleted}</p></td> 331 * <td>{Error}</p></td> 332 * <td>Successful invoke of this method in a valid state does not change 333 * the state. Calling this method in an invalid state transfers the 334 * object to the <em>Error</em> state. </p></td></tr> 335 * <tr><td>pause </p></td> 336 * <td>{Started, Paused, PlaybackCompleted}</p></td> 337 * <td>{Idle, Initialized, Prepared, Stopped, Error}</p></td> 338 * <td>Successful invoke of this method in a valid state transfers the 339 * object to the <em>Paused</em> state. Calling this method in an 340 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 341 * <tr><td>prepare </p></td> 342 * <td>{Initialized, Stopped} </p></td> 343 * <td>{Idle, Prepared, Started, Paused, PlaybackCompleted, Error} </p></td> 344 * <td>Successful invoke of this method in a valid state transfers the 345 * object to the <em>Prepared</em> state. Calling this method in an 346 * invalid state throws an IllegalStateException.</p></td></tr> 347 * <tr><td>prepareAsync </p></td> 348 * <td>{Initialized, Stopped} </p></td> 349 * <td>{Idle, Prepared, Started, Paused, PlaybackCompleted, Error} </p></td> 350 * <td>Successful invoke of this method in a valid state transfers the 351 * object to the <em>Preparing</em> state. Calling this method in an 352 * invalid state throws an IllegalStateException.</p></td></tr> 353 * <tr><td>release </p></td> 354 * <td>any </p></td> 355 * <td>{} </p></td> 356 * <td>After {@link #release()}, the object is no longer available. </p></td></tr> 357 * <tr><td>reset </p></td> 358 * <td>{Idle, Initialized, Prepared, Started, Paused, Stopped, 359 * PlaybackCompleted, Error}</p></td> 360 * <td>{}</p></td> 361 * <td>After {@link #reset()}, the object is like being just created.</p></td></tr> 362 * <tr><td>seekTo </p></td> 363 * <td>{Prepared, Started, Paused, PlaybackCompleted} </p></td> 364 * <td>{Idle, Initialized, Stopped, Error}</p></td> 365 * <td>Successful invoke of this method in a valid state does not change 366 * the state. Calling this method in an invalid state transfers the 367 * object to the <em>Error</em> state. </p></td></tr> 368 * <tr><td>setAudioSessionId </p></td> 369 * <td>{Idle} </p></td> 370 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted, 371 * Error} </p></td> 372 * <td>This method must be called in idle state as the audio session ID must be known before 373 * calling setDataSource. Calling it does not change the object state. </p></td></tr> 374 * <tr><td>setAudioStreamType </p></td> 375 * <td>{Idle, Initialized, Stopped, Prepared, Started, Paused, 376 * PlaybackCompleted}</p></td> 377 * <td>{Error}</p></td> 378 * <td>Successful invoke of this method does not change the state. In order for the 379 * target audio stream type to become effective, this method must be called before 380 * prepare() or prepareAsync().</p></td></tr> 381 * <tr><td>setAuxEffectSendLevel </p></td> 382 * <td>any</p></td> 383 * <td>{} </p></td> 384 * <td>Calling this method does not change the object state. </p></td></tr> 385 * <tr><td>setDataSource </p></td> 386 * <td>{Idle} </p></td> 387 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted, 388 * Error} </p></td> 389 * <td>Successful invoke of this method in a valid state transfers the 390 * object to the <em>Initialized</em> state. Calling this method in an 391 * invalid state throws an IllegalStateException.</p></td></tr> 392 * <tr><td>setDisplay </p></td> 393 * <td>any </p></td> 394 * <td>{} </p></td> 395 * <td>This method can be called in any state and calling it does not change 396 * the object state. </p></td></tr> 397 * <tr><td>setSurface </p></td> 398 * <td>any </p></td> 399 * <td>{} </p></td> 400 * <td>This method can be called in any state and calling it does not change 401 * the object state. </p></td></tr> 402 * <tr><td>setVideoScalingMode </p></td> 403 * <td>{Initialized, Prepared, Started, Paused, Stopped, PlaybackCompleted} </p></td> 404 * <td>{Idle, Error}</p></td> 405 * <td>Successful invoke of this method does not change the state.</p></td></tr> 406 * <tr><td>setLooping </p></td> 407 * <td>{Idle, Initialized, Stopped, Prepared, Started, Paused, 408 * PlaybackCompleted}</p></td> 409 * <td>{Error}</p></td> 410 * <td>Successful invoke of this method in a valid state does not change 411 * the state. Calling this method in an 412 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 413 * <tr><td>isLooping </p></td> 414 * <td>any </p></td> 415 * <td>{} </p></td> 416 * <td>This method can be called in any state and calling it does not change 417 * the object state. </p></td></tr> 418 * <tr><td>setOnBufferingUpdateListener </p></td> 419 * <td>any </p></td> 420 * <td>{} </p></td> 421 * <td>This method can be called in any state and calling it does not change 422 * the object state. </p></td></tr> 423 * <tr><td>setOnCompletionListener </p></td> 424 * <td>any </p></td> 425 * <td>{} </p></td> 426 * <td>This method can be called in any state and calling it does not change 427 * the object state. </p></td></tr> 428 * <tr><td>setOnErrorListener </p></td> 429 * <td>any </p></td> 430 * <td>{} </p></td> 431 * <td>This method can be called in any state and calling it does not change 432 * the object state. </p></td></tr> 433 * <tr><td>setOnPreparedListener </p></td> 434 * <td>any </p></td> 435 * <td>{} </p></td> 436 * <td>This method can be called in any state and calling it does not change 437 * the object state. </p></td></tr> 438 * <tr><td>setOnSeekCompleteListener </p></td> 439 * <td>any </p></td> 440 * <td>{} </p></td> 441 * <td>This method can be called in any state and calling it does not change 442 * the object state. </p></td></tr> 443 * <tr><td>setScreenOnWhilePlaying</></td> 444 * <td>any </p></td> 445 * <td>{} </p></td> 446 * <td>This method can be called in any state and calling it does not change 447 * the object state. </p></td></tr> 448 * <tr><td>setVolume </p></td> 449 * <td>{Idle, Initialized, Stopped, Prepared, Started, Paused, 450 * PlaybackCompleted}</p></td> 451 * <td>{Error}</p></td> 452 * <td>Successful invoke of this method does not change the state. 453 * <tr><td>setWakeMode </p></td> 454 * <td>any </p></td> 455 * <td>{} </p></td> 456 * <td>This method can be called in any state and calling it does not change 457 * the object state.</p></td></tr> 458 * <tr><td>start </p></td> 459 * <td>{Prepared, Started, Paused, PlaybackCompleted}</p></td> 460 * <td>{Idle, Initialized, Stopped, Error}</p></td> 461 * <td>Successful invoke of this method in a valid state transfers the 462 * object to the <em>Started</em> state. Calling this method in an 463 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 464 * <tr><td>stop </p></td> 465 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 466 * <td>{Idle, Initialized, Error}</p></td> 467 * <td>Successful invoke of this method in a valid state transfers the 468 * object to the <em>Stopped</em> state. Calling this method in an 469 * invalid state transfers the object to the <em>Error</em> state.</p></td></tr> 470 * <tr><td>getTrackInfo </p></td> 471 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 472 * <td>{Idle, Initialized, Error}</p></td> 473 * <td>Successful invoke of this method does not change the state.</p></td></tr> 474 * <tr><td>addTimedTextSource </p></td> 475 * <td>{Prepared, Started, Stopped, Paused, PlaybackCompleted}</p></td> 476 * <td>{Idle, Initialized, Error}</p></td> 477 * <td>Successful invoke of this method does not change the state.</p></td></tr> 478 * <tr><td>selectTrack </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>deselectTrack </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 * 487 * </table> 488 * 489 * <a name="Permissions"></a> 490 * <h3>Permissions</h3> 491 * <p>One may need to declare a corresponding WAKE_LOCK permission {@link 492 * android.R.styleable#AndroidManifestUsesPermission <uses-permission>} 493 * element. 494 * 495 * <p>This class requires the {@link android.Manifest.permission#INTERNET} permission 496 * when used with network-based content. 497 * 498 * <a name="Callbacks"></a> 499 * <h3>Callbacks</h3> 500 * <p>Applications may want to register for informational and error 501 * events in order to be informed of some internal state update and 502 * possible runtime errors during playback or streaming. Registration for 503 * these events is done by properly setting the appropriate listeners (via calls 504 * to 505 * {@link #setOnPreparedListener(OnPreparedListener)}setOnPreparedListener, 506 * {@link #setOnVideoSizeChangedListener(OnVideoSizeChangedListener)}setOnVideoSizeChangedListener, 507 * {@link #setOnSeekCompleteListener(OnSeekCompleteListener)}setOnSeekCompleteListener, 508 * {@link #setOnCompletionListener(OnCompletionListener)}setOnCompletionListener, 509 * {@link #setOnBufferingUpdateListener(OnBufferingUpdateListener)}setOnBufferingUpdateListener, 510 * {@link #setOnInfoListener(OnInfoListener)}setOnInfoListener, 511 * {@link #setOnErrorListener(OnErrorListener)}setOnErrorListener, etc). 512 * In order to receive the respective callback 513 * associated with these listeners, applications are required to create 514 * MediaPlayer objects on a thread with its own Looper running (main UI 515 * thread by default has a Looper running). 516 * 517 */ 518public class MediaPlayer 519{ 520 /** 521 Constant to retrieve only the new metadata since the last 522 call. 523 // FIXME: unhide. 524 // FIXME: add link to getMetadata(boolean, boolean) 525 {@hide} 526 */ 527 public static final boolean METADATA_UPDATE_ONLY = true; 528 529 /** 530 Constant to retrieve all the metadata. 531 // FIXME: unhide. 532 // FIXME: add link to getMetadata(boolean, boolean) 533 {@hide} 534 */ 535 public static final boolean METADATA_ALL = false; 536 537 /** 538 Constant to enable the metadata filter during retrieval. 539 // FIXME: unhide. 540 // FIXME: add link to getMetadata(boolean, boolean) 541 {@hide} 542 */ 543 public static final boolean APPLY_METADATA_FILTER = true; 544 545 /** 546 Constant to disable the metadata filter during retrieval. 547 // FIXME: unhide. 548 // FIXME: add link to getMetadata(boolean, boolean) 549 {@hide} 550 */ 551 public static final boolean BYPASS_METADATA_FILTER = false; 552 553 static { 554 System.loadLibrary("media_jni"); 555 native_init(); 556 } 557 558 private final static String TAG = "MediaPlayer"; 559 // Name of the remote interface for the media player. Must be kept 560 // in sync with the 2nd parameter of the IMPLEMENT_META_INTERFACE 561 // macro invocation in IMediaPlayer.cpp 562 private final static String IMEDIA_PLAYER = "android.media.IMediaPlayer"; 563 564 private int mNativeContext; // accessed by native methods 565 private int mNativeSurfaceTexture; // accessed by native methods 566 private int mListenerContext; // accessed by native methods 567 private SurfaceHolder mSurfaceHolder; 568 private EventHandler mEventHandler; 569 private PowerManager.WakeLock mWakeLock = null; 570 private boolean mScreenOnWhilePlaying; 571 private boolean mStayAwake; 572 573 /** 574 * Default constructor. Consider using one of the create() methods for 575 * synchronously instantiating a MediaPlayer from a Uri or resource. 576 * <p>When done with the MediaPlayer, you should call {@link #release()}, 577 * to free the resources. If not released, too many MediaPlayer instances may 578 * result in an exception.</p> 579 */ 580 public MediaPlayer() { 581 582 Looper looper; 583 if ((looper = Looper.myLooper()) != null) { 584 mEventHandler = new EventHandler(this, looper); 585 } else if ((looper = Looper.getMainLooper()) != null) { 586 mEventHandler = new EventHandler(this, looper); 587 } else { 588 mEventHandler = null; 589 } 590 591 /* Native setup requires a weak reference to our object. 592 * It's easier to create it here than in C++. 593 */ 594 native_setup(new WeakReference<MediaPlayer>(this)); 595 } 596 597 /* 598 * Update the MediaPlayer SurfaceTexture. 599 * Call after setting a new display surface. 600 */ 601 private native void _setVideoSurface(Surface surface); 602 603 /* Do not change these values (starting with INVOKE_ID) without updating 604 * their counterparts in include/media/mediaplayer.h! 605 */ 606 private static final int INVOKE_ID_GET_TRACK_INFO = 1; 607 private static final int INVOKE_ID_ADD_EXTERNAL_SOURCE = 2; 608 private static final int INVOKE_ID_ADD_EXTERNAL_SOURCE_FD = 3; 609 private static final int INVOKE_ID_SELECT_TRACK = 4; 610 private static final int INVOKE_ID_DESELECT_TRACK = 5; 611 private static final int INVOKE_ID_SET_VIDEO_SCALE_MODE = 6; 612 613 /** 614 * Create a request parcel which can be routed to the native media 615 * player using {@link #invoke(Parcel, Parcel)}. The Parcel 616 * returned has the proper InterfaceToken set. The caller should 617 * not overwrite that token, i.e it can only append data to the 618 * Parcel. 619 * 620 * @return A parcel suitable to hold a request for the native 621 * player. 622 * {@hide} 623 */ 624 public Parcel newRequest() { 625 Parcel parcel = Parcel.obtain(); 626 parcel.writeInterfaceToken(IMEDIA_PLAYER); 627 return parcel; 628 } 629 630 /** 631 * Invoke a generic method on the native player using opaque 632 * parcels for the request and reply. Both payloads' format is a 633 * convention between the java caller and the native player. 634 * Must be called after setDataSource to make sure a native player 635 * exists. On failure, a RuntimeException is thrown. 636 * 637 * @param request Parcel with the data for the extension. The 638 * caller must use {@link #newRequest()} to get one. 639 * 640 * @param reply Output parcel with the data returned by the 641 * native player. 642 * 643 * {@hide} 644 */ 645 public void invoke(Parcel request, Parcel reply) { 646 int retcode = native_invoke(request, reply); 647 reply.setDataPosition(0); 648 if (retcode != 0) { 649 throw new RuntimeException("failure code: " + retcode); 650 } 651 } 652 653 /** 654 * Sets the {@link SurfaceHolder} to use for displaying the video 655 * portion of the media. 656 * 657 * Either a surface holder or surface must be set if a display or video sink 658 * is needed. Not calling this method or {@link #setSurface(Surface)} 659 * when playing back a video will result in only the audio track being played. 660 * A null surface holder or surface will result in only the audio track being 661 * played. 662 * 663 * @param sh the SurfaceHolder to use for video display 664 */ 665 public void setDisplay(SurfaceHolder sh) { 666 mSurfaceHolder = sh; 667 Surface surface; 668 if (sh != null) { 669 surface = sh.getSurface(); 670 } else { 671 surface = null; 672 } 673 _setVideoSurface(surface); 674 updateSurfaceScreenOn(); 675 } 676 677 /** 678 * Sets the {@link Surface} to be used as the sink for the video portion of 679 * the media. This is similar to {@link #setDisplay(SurfaceHolder)}, but 680 * does not support {@link #setScreenOnWhilePlaying(boolean)}. Setting a 681 * Surface will un-set any Surface or SurfaceHolder that was previously set. 682 * A null surface will result in only the audio track being played. 683 * 684 * If the Surface sends frames to a {@link SurfaceTexture}, the timestamps 685 * returned from {@link SurfaceTexture#getTimestamp()} will have an 686 * unspecified zero point. These timestamps cannot be directly compared 687 * between different media sources, different instances of the same media 688 * source, or multiple runs of the same program. The timestamp is normally 689 * monotonically increasing and is unaffected by time-of-day adjustments, 690 * but it is reset when the position is set. 691 * 692 * @param surface The {@link Surface} to be used for the video portion of 693 * the media. 694 */ 695 public void setSurface(Surface surface) { 696 if (mScreenOnWhilePlaying && surface != null) { 697 Log.w(TAG, "setScreenOnWhilePlaying(true) is ineffective for Surface"); 698 } 699 mSurfaceHolder = null; 700 _setVideoSurface(surface); 701 updateSurfaceScreenOn(); 702 } 703 704 /* Do not change these video scaling mode values below without updating 705 * their counterparts in system/window.h! Please do not forget to update 706 * {@link #isVideoScalingModeSupported} when new video scaling modes 707 * are added. 708 */ 709 /** 710 * Specifies a video scaling mode. The content is stretched to the 711 * surface rendering area. When the surface has the same aspect ratio 712 * as the content, the aspect ratio of the content is maintained; 713 * otherwise, the aspect ratio of the content is not maintained when video 714 * is being rendered. Unlike {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING}, 715 * there is no content cropping with this video scaling mode. 716 */ 717 public static final int VIDEO_SCALING_MODE_SCALE_TO_FIT = 1; 718 719 /** 720 * Specifies a video scaling mode. The content is scaled, maintaining 721 * its aspect ratio. The whole surface area is always used. When the 722 * aspect ratio of the content is the same as the surface, no content 723 * is cropped; otherwise, content is cropped to fit the surface. 724 */ 725 public static final int VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING = 2; 726 /** 727 * Sets video scaling mode. To make the target video scaling mode 728 * effective during playback, this method must be called after 729 * data source is set. If not called, the default video 730 * scaling mode is {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT}. 731 * 732 * <p> The supported video scaling modes are: 733 * <ul> 734 * <li> {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT} 735 * <li> {@link #VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING} 736 * </ul> 737 * 738 * @param mode target video scaling mode. Most be one of the supported 739 * video scaling modes; otherwise, IllegalArgumentException will be thrown. 740 * 741 * @see MediaPlayer#VIDEO_SCALING_MODE_SCALE_TO_FIT 742 * @see MediaPlayer#VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING 743 */ 744 public void setVideoScalingMode(int mode) { 745 if (!isVideoScalingModeSupported(mode)) { 746 final String msg = "Scaling mode " + mode + " is not supported"; 747 throw new IllegalArgumentException(msg); 748 } 749 Parcel request = Parcel.obtain(); 750 Parcel reply = Parcel.obtain(); 751 try { 752 request.writeInterfaceToken(IMEDIA_PLAYER); 753 request.writeInt(INVOKE_ID_SET_VIDEO_SCALE_MODE); 754 request.writeInt(mode); 755 invoke(request, reply); 756 } finally { 757 request.recycle(); 758 reply.recycle(); 759 } 760 } 761 762 /** 763 * Convenience method to create a MediaPlayer for a given Uri. 764 * On success, {@link #prepare()} will already have been called and must not be called again. 765 * <p>When done with the MediaPlayer, you should call {@link #release()}, 766 * to free the resources. If not released, too many MediaPlayer instances will 767 * result in an exception.</p> 768 * 769 * @param context the Context to use 770 * @param uri the Uri from which to get the datasource 771 * @return a MediaPlayer object, or null if creation failed 772 */ 773 public static MediaPlayer create(Context context, Uri uri) { 774 return create (context, uri, null); 775 } 776 777 /** 778 * Convenience method to create a MediaPlayer for a given Uri. 779 * On success, {@link #prepare()} will already have been called and must not be called again. 780 * <p>When done with the MediaPlayer, you should call {@link #release()}, 781 * to free the resources. If not released, too many MediaPlayer instances will 782 * result in an exception.</p> 783 * 784 * @param context the Context to use 785 * @param uri the Uri from which to get the datasource 786 * @param holder the SurfaceHolder to use for displaying the video 787 * @return a MediaPlayer object, or null if creation failed 788 */ 789 public static MediaPlayer create(Context context, Uri uri, SurfaceHolder holder) { 790 791 try { 792 MediaPlayer mp = new MediaPlayer(); 793 mp.setDataSource(context, uri); 794 if (holder != null) { 795 mp.setDisplay(holder); 796 } 797 mp.prepare(); 798 return mp; 799 } catch (IOException ex) { 800 Log.d(TAG, "create failed:", ex); 801 // fall through 802 } catch (IllegalArgumentException ex) { 803 Log.d(TAG, "create failed:", ex); 804 // fall through 805 } catch (SecurityException ex) { 806 Log.d(TAG, "create failed:", ex); 807 // fall through 808 } 809 810 return null; 811 } 812 813 // Note no convenience method to create a MediaPlayer with SurfaceTexture sink. 814 815 /** 816 * Convenience method to create a MediaPlayer for a given resource id. 817 * On success, {@link #prepare()} will already have been called and must not be called again. 818 * <p>When done with the MediaPlayer, you should call {@link #release()}, 819 * to free the resources. If not released, too many MediaPlayer instances will 820 * result in an exception.</p> 821 * 822 * @param context the Context to use 823 * @param resid the raw resource id (<var>R.raw.<something></var>) for 824 * the resource to use as the datasource 825 * @return a MediaPlayer object, or null if creation failed 826 */ 827 public static MediaPlayer create(Context context, int resid) { 828 try { 829 AssetFileDescriptor afd = context.getResources().openRawResourceFd(resid); 830 if (afd == null) return null; 831 832 MediaPlayer mp = new MediaPlayer(); 833 mp.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength()); 834 afd.close(); 835 mp.prepare(); 836 return mp; 837 } catch (IOException ex) { 838 Log.d(TAG, "create failed:", ex); 839 // fall through 840 } catch (IllegalArgumentException ex) { 841 Log.d(TAG, "create failed:", ex); 842 // fall through 843 } catch (SecurityException ex) { 844 Log.d(TAG, "create failed:", ex); 845 // fall through 846 } 847 return null; 848 } 849 850 /** 851 * Sets the data source as a content Uri. 852 * 853 * @param context the Context to use when resolving the Uri 854 * @param uri the Content URI of the data you want to play 855 * @throws IllegalStateException if it is called in an invalid state 856 */ 857 public void setDataSource(Context context, Uri uri) 858 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 859 setDataSource(context, uri, 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 * @param headers the headers to be sent together with the request for the data 868 * @throws IllegalStateException if it is called in an invalid state 869 */ 870 public void setDataSource(Context context, Uri uri, Map<String, String> headers) 871 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 872 disableProxyListener(); 873 874 String scheme = uri.getScheme(); 875 if(scheme == null || scheme.equals("file")) { 876 setDataSource(uri.getPath()); 877 return; 878 } 879 880 AssetFileDescriptor fd = null; 881 try { 882 ContentResolver resolver = context.getContentResolver(); 883 fd = resolver.openAssetFileDescriptor(uri, "r"); 884 if (fd == null) { 885 return; 886 } 887 // Note: using getDeclaredLength so that our behavior is the same 888 // as previous versions when the content provider is returning 889 // a full file. 890 if (fd.getDeclaredLength() < 0) { 891 setDataSource(fd.getFileDescriptor()); 892 } else { 893 setDataSource(fd.getFileDescriptor(), fd.getStartOffset(), fd.getDeclaredLength()); 894 } 895 return; 896 } catch (SecurityException ex) { 897 } catch (IOException ex) { 898 } finally { 899 if (fd != null) { 900 fd.close(); 901 } 902 } 903 904 Log.d(TAG, "Couldn't open file on client side, trying server side"); 905 906 setDataSource(uri.toString(), headers); 907 908 if (scheme.equalsIgnoreCase("http") 909 || scheme.equalsIgnoreCase("https")) { 910 setupProxyListener(context); 911 } 912 } 913 914 /** 915 * Sets the data source (file-path or http/rtsp URL) to use. 916 * 917 * @param path the path of the file, or the http/rtsp URL of the stream you want to play 918 * @throws IllegalStateException if it is called in an invalid state 919 * 920 * <p>When <code>path</code> refers to a local file, the file may actually be opened by a 921 * process other than the calling application. This implies that the pathname 922 * should be an absolute path (as any other process runs with unspecified current working 923 * directory), and that the pathname should reference a world-readable file. 924 * As an alternative, the application could first open the file for reading, 925 * and then use the file descriptor form {@link #setDataSource(FileDescriptor)}. 926 */ 927 public void setDataSource(String path) 928 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 929 setDataSource(path, null, null); 930 } 931 932 /** 933 * Sets the data source (file-path or http/rtsp URL) to use. 934 * 935 * @param path the path of the file, or the http/rtsp URL of the stream you want to play 936 * @param headers the headers associated with the http request for the stream you want to play 937 * @throws IllegalStateException if it is called in an invalid state 938 * @hide pending API council 939 */ 940 public void setDataSource(String path, Map<String, String> headers) 941 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException 942 { 943 String[] keys = null; 944 String[] values = null; 945 946 if (headers != null) { 947 keys = new String[headers.size()]; 948 values = new String[headers.size()]; 949 950 int i = 0; 951 for (Map.Entry<String, String> entry: headers.entrySet()) { 952 keys[i] = entry.getKey(); 953 values[i] = entry.getValue(); 954 ++i; 955 } 956 } 957 setDataSource(path, keys, values); 958 } 959 960 private void setDataSource(String path, String[] keys, String[] values) 961 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException { 962 disableProxyListener(); 963 964 final Uri uri = Uri.parse(path); 965 if ("file".equals(uri.getScheme())) { 966 path = uri.getPath(); 967 } 968 969 final File file = new File(path); 970 if (file.exists()) { 971 FileInputStream is = new FileInputStream(file); 972 FileDescriptor fd = is.getFD(); 973 setDataSource(fd); 974 is.close(); 975 } else { 976 _setDataSource(path, keys, values); 977 } 978 } 979 980 private native void _setDataSource( 981 String path, String[] keys, String[] values) 982 throws IOException, IllegalArgumentException, SecurityException, IllegalStateException; 983 984 /** 985 * Sets the data source (FileDescriptor) to use. It is the caller's responsibility 986 * to close the file descriptor. It is safe to do so as soon as this call returns. 987 * 988 * @param fd the FileDescriptor for the file you want to play 989 * @throws IllegalStateException if it is called in an invalid state 990 */ 991 public void setDataSource(FileDescriptor fd) 992 throws IOException, IllegalArgumentException, IllegalStateException { 993 // intentionally less than LONG_MAX 994 setDataSource(fd, 0, 0x7ffffffffffffffL); 995 } 996 997 /** 998 * Sets the data source (FileDescriptor) to use. The FileDescriptor must be 999 * seekable (N.B. a LocalSocket is not seekable). It is the caller's responsibility 1000 * to close the file descriptor. It is safe to do so as soon as this call returns. 1001 * 1002 * @param fd the FileDescriptor for the file you want to play 1003 * @param offset the offset into the file where the data to be played starts, in bytes 1004 * @param length the length in bytes of the data to be played 1005 * @throws IllegalStateException if it is called in an invalid state 1006 */ 1007 public void setDataSource(FileDescriptor fd, long offset, long length) 1008 throws IOException, IllegalArgumentException, IllegalStateException { 1009 disableProxyListener(); 1010 _setDataSource(fd, offset, length); 1011 } 1012 1013 private native void _setDataSource(FileDescriptor fd, long offset, long length) 1014 throws IOException, IllegalArgumentException, IllegalStateException; 1015 1016 /** 1017 * Prepares the player for playback, synchronously. 1018 * 1019 * After setting the datasource and the display surface, you need to either 1020 * call prepare() or prepareAsync(). For files, it is OK to call prepare(), 1021 * which blocks until MediaPlayer is ready for playback. 1022 * 1023 * @throws IllegalStateException if it is called in an invalid state 1024 */ 1025 public native void prepare() throws IOException, IllegalStateException; 1026 1027 /** 1028 * Prepares the player for playback, asynchronously. 1029 * 1030 * After setting the datasource and the display surface, you need to either 1031 * call prepare() or prepareAsync(). For streams, you should call prepareAsync(), 1032 * which returns immediately, rather than blocking until enough data has been 1033 * buffered. 1034 * 1035 * @throws IllegalStateException if it is called in an invalid state 1036 */ 1037 public native void prepareAsync() throws IllegalStateException; 1038 1039 /** 1040 * Starts or resumes playback. If playback had previously been paused, 1041 * playback will continue from where it was paused. If playback had 1042 * been stopped, or never started before, playback will start at the 1043 * beginning. 1044 * 1045 * @throws IllegalStateException if it is called in an invalid state 1046 */ 1047 public void start() throws IllegalStateException { 1048 stayAwake(true); 1049 _start(); 1050 } 1051 1052 private native void _start() throws IllegalStateException; 1053 1054 /** 1055 * Stops playback after playback has been stopped or paused. 1056 * 1057 * @throws IllegalStateException if the internal player engine has not been 1058 * initialized. 1059 */ 1060 public void stop() throws IllegalStateException { 1061 stayAwake(false); 1062 _stop(); 1063 } 1064 1065 private native void _stop() throws IllegalStateException; 1066 1067 /** 1068 * Pauses playback. Call start() to resume. 1069 * 1070 * @throws IllegalStateException if the internal player engine has not been 1071 * initialized. 1072 */ 1073 public void pause() throws IllegalStateException { 1074 stayAwake(false); 1075 _pause(); 1076 } 1077 1078 private native void _pause() throws IllegalStateException; 1079 1080 /** 1081 * Set the low-level power management behavior for this MediaPlayer. This 1082 * can be used when the MediaPlayer is not playing through a SurfaceHolder 1083 * set with {@link #setDisplay(SurfaceHolder)} and thus can use the 1084 * high-level {@link #setScreenOnWhilePlaying(boolean)} feature. 1085 * 1086 * <p>This function has the MediaPlayer access the low-level power manager 1087 * service to control the device's power usage while playing is occurring. 1088 * The parameter is a combination of {@link android.os.PowerManager} wake flags. 1089 * Use of this method requires {@link android.Manifest.permission#WAKE_LOCK} 1090 * permission. 1091 * By default, no attempt is made to keep the device awake during playback. 1092 * 1093 * @param context the Context to use 1094 * @param mode the power/wake mode to set 1095 * @see android.os.PowerManager 1096 */ 1097 public void setWakeMode(Context context, int mode) { 1098 boolean washeld = false; 1099 if (mWakeLock != null) { 1100 if (mWakeLock.isHeld()) { 1101 washeld = true; 1102 mWakeLock.release(); 1103 } 1104 mWakeLock = null; 1105 } 1106 1107 PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE); 1108 mWakeLock = pm.newWakeLock(mode|PowerManager.ON_AFTER_RELEASE, MediaPlayer.class.getName()); 1109 mWakeLock.setReferenceCounted(false); 1110 if (washeld) { 1111 mWakeLock.acquire(); 1112 } 1113 } 1114 1115 /** 1116 * Control whether we should use the attached SurfaceHolder to keep the 1117 * screen on while video playback is occurring. This is the preferred 1118 * method over {@link #setWakeMode} where possible, since it doesn't 1119 * require that the application have permission for low-level wake lock 1120 * access. 1121 * 1122 * @param screenOn Supply true to keep the screen on, false to allow it 1123 * to turn off. 1124 */ 1125 public void setScreenOnWhilePlaying(boolean screenOn) { 1126 if (mScreenOnWhilePlaying != screenOn) { 1127 if (screenOn && mSurfaceHolder == null) { 1128 Log.w(TAG, "setScreenOnWhilePlaying(true) is ineffective without a SurfaceHolder"); 1129 } 1130 mScreenOnWhilePlaying = screenOn; 1131 updateSurfaceScreenOn(); 1132 } 1133 } 1134 1135 private void stayAwake(boolean awake) { 1136 if (mWakeLock != null) { 1137 if (awake && !mWakeLock.isHeld()) { 1138 mWakeLock.acquire(); 1139 } else if (!awake && mWakeLock.isHeld()) { 1140 mWakeLock.release(); 1141 } 1142 } 1143 mStayAwake = awake; 1144 updateSurfaceScreenOn(); 1145 } 1146 1147 private void updateSurfaceScreenOn() { 1148 if (mSurfaceHolder != null) { 1149 mSurfaceHolder.setKeepScreenOn(mScreenOnWhilePlaying && mStayAwake); 1150 } 1151 } 1152 1153 /** 1154 * Returns the width of the video. 1155 * 1156 * @return the width of the video, or 0 if there is no video, 1157 * no display surface was set, or the width has not been determined 1158 * yet. The OnVideoSizeChangedListener can be registered via 1159 * {@link #setOnVideoSizeChangedListener(OnVideoSizeChangedListener)} 1160 * to provide a notification when the width is available. 1161 */ 1162 public native int getVideoWidth(); 1163 1164 /** 1165 * Returns the height of the video. 1166 * 1167 * @return the height of the video, or 0 if there is no video, 1168 * no display surface was set, or the height has not been determined 1169 * yet. The OnVideoSizeChangedListener can be registered via 1170 * {@link #setOnVideoSizeChangedListener(OnVideoSizeChangedListener)} 1171 * to provide a notification when the height is available. 1172 */ 1173 public native int getVideoHeight(); 1174 1175 /** 1176 * Checks whether the MediaPlayer is playing. 1177 * 1178 * @return true if currently playing, false otherwise 1179 * @throws IllegalStateException if the internal player engine has not been 1180 * initialized or has been released. 1181 */ 1182 public native boolean isPlaying(); 1183 1184 /** 1185 * Seeks to specified time position. 1186 * 1187 * @param msec the offset in milliseconds from the start to seek to 1188 * @throws IllegalStateException if the internal player engine has not been 1189 * initialized 1190 */ 1191 public native void seekTo(int msec) throws IllegalStateException; 1192 1193 /** 1194 * Gets the current playback position. 1195 * 1196 * @return the current position in milliseconds 1197 */ 1198 public native int getCurrentPosition(); 1199 1200 /** 1201 * Gets the duration of the file. 1202 * 1203 * @return the duration in milliseconds, if no duration is available 1204 * (for example, if streaming live content), -1 is returned. 1205 */ 1206 public native int getDuration(); 1207 1208 /** 1209 * Gets the media metadata. 1210 * 1211 * @param update_only controls whether the full set of available 1212 * metadata is returned or just the set that changed since the 1213 * last call. See {@see #METADATA_UPDATE_ONLY} and {@see 1214 * #METADATA_ALL}. 1215 * 1216 * @param apply_filter if true only metadata that matches the 1217 * filter is returned. See {@see #APPLY_METADATA_FILTER} and {@see 1218 * #BYPASS_METADATA_FILTER}. 1219 * 1220 * @return The metadata, possibly empty. null if an error occured. 1221 // FIXME: unhide. 1222 * {@hide} 1223 */ 1224 public Metadata getMetadata(final boolean update_only, 1225 final boolean apply_filter) { 1226 Parcel reply = Parcel.obtain(); 1227 Metadata data = new Metadata(); 1228 1229 if (!native_getMetadata(update_only, apply_filter, reply)) { 1230 reply.recycle(); 1231 return null; 1232 } 1233 1234 // Metadata takes over the parcel, don't recycle it unless 1235 // there is an error. 1236 if (!data.parse(reply)) { 1237 reply.recycle(); 1238 return null; 1239 } 1240 return data; 1241 } 1242 1243 /** 1244 * Set a filter for the metadata update notification and update 1245 * retrieval. The caller provides 2 set of metadata keys, allowed 1246 * and blocked. The blocked set always takes precedence over the 1247 * allowed one. 1248 * Metadata.MATCH_ALL and Metadata.MATCH_NONE are 2 sets available as 1249 * shorthands to allow/block all or no metadata. 1250 * 1251 * By default, there is no filter set. 1252 * 1253 * @param allow Is the set of metadata the client is interested 1254 * in receiving new notifications for. 1255 * @param block Is the set of metadata the client is not interested 1256 * in receiving new notifications for. 1257 * @return The call status code. 1258 * 1259 // FIXME: unhide. 1260 * {@hide} 1261 */ 1262 public int setMetadataFilter(Set<Integer> allow, Set<Integer> block) { 1263 // Do our serialization manually instead of calling 1264 // Parcel.writeArray since the sets are made of the same type 1265 // we avoid paying the price of calling writeValue (used by 1266 // writeArray) which burns an extra int per element to encode 1267 // the type. 1268 Parcel request = newRequest(); 1269 1270 // The parcel starts already with an interface token. There 1271 // are 2 filters. Each one starts with a 4bytes number to 1272 // store the len followed by a number of int (4 bytes as well) 1273 // representing the metadata type. 1274 int capacity = request.dataSize() + 4 * (1 + allow.size() + 1 + block.size()); 1275 1276 if (request.dataCapacity() < capacity) { 1277 request.setDataCapacity(capacity); 1278 } 1279 1280 request.writeInt(allow.size()); 1281 for(Integer t: allow) { 1282 request.writeInt(t); 1283 } 1284 request.writeInt(block.size()); 1285 for(Integer t: block) { 1286 request.writeInt(t); 1287 } 1288 return native_setMetadataFilter(request); 1289 } 1290 1291 /** 1292 * Set the MediaPlayer to start when this MediaPlayer finishes playback 1293 * (i.e. reaches the end of the stream). 1294 * The media framework will attempt to transition from this player to 1295 * the next as seamlessly as possible. The next player can be set at 1296 * any time before completion. The next player must be prepared by the 1297 * app, and the application should not call start() on it. 1298 * The next MediaPlayer must be different from 'this'. An exception 1299 * will be thrown if next == this. 1300 * The application may call setNextMediaPlayer(null) to indicate no 1301 * next player should be started at the end of playback. 1302 * If the current player is looping, it will keep looping and the next 1303 * player will not be started. 1304 * 1305 * @param next the player to start after this one completes playback. 1306 * 1307 */ 1308 public native void setNextMediaPlayer(MediaPlayer next); 1309 1310 /** 1311 * Releases resources associated with this MediaPlayer object. 1312 * It is considered good practice to call this method when you're 1313 * done using the MediaPlayer. In particular, whenever an Activity 1314 * of an application is paused (its onPause() method is called), 1315 * or stopped (its onStop() method is called), this method should be 1316 * invoked to release the MediaPlayer object, unless the application 1317 * has a special need to keep the object around. In addition to 1318 * unnecessary resources (such as memory and instances of codecs) 1319 * being held, failure to call this method immediately if a 1320 * MediaPlayer object is no longer needed may also lead to 1321 * continuous battery consumption for mobile devices, and playback 1322 * failure for other applications if no multiple instances of the 1323 * same codec are supported on a device. Even if multiple instances 1324 * of the same codec are supported, some performance degradation 1325 * may be expected when unnecessary multiple instances are used 1326 * at the same time. 1327 */ 1328 public void release() { 1329 stayAwake(false); 1330 updateSurfaceScreenOn(); 1331 mOnPreparedListener = null; 1332 mOnBufferingUpdateListener = null; 1333 mOnCompletionListener = null; 1334 mOnSeekCompleteListener = null; 1335 mOnErrorListener = null; 1336 mOnInfoListener = null; 1337 mOnVideoSizeChangedListener = null; 1338 mOnTimedTextListener = null; 1339 _release(); 1340 } 1341 1342 private native void _release(); 1343 1344 /** 1345 * Resets the MediaPlayer to its uninitialized state. After calling 1346 * this method, you will have to initialize it again by setting the 1347 * data source and calling prepare(). 1348 */ 1349 public void reset() { 1350 stayAwake(false); 1351 _reset(); 1352 // make sure none of the listeners get called anymore 1353 mEventHandler.removeCallbacksAndMessages(null); 1354 1355 disableProxyListener(); 1356 } 1357 1358 private native void _reset(); 1359 1360 /** 1361 * Sets the audio stream type for this MediaPlayer. See {@link AudioManager} 1362 * for a list of stream types. Must call this method before prepare() or 1363 * prepareAsync() in order for the target stream type to become effective 1364 * thereafter. 1365 * 1366 * @param streamtype the audio stream type 1367 * @see android.media.AudioManager 1368 */ 1369 public native void setAudioStreamType(int streamtype); 1370 1371 /** 1372 * Sets the player to be looping or non-looping. 1373 * 1374 * @param looping whether to loop or not 1375 */ 1376 public native void setLooping(boolean looping); 1377 1378 /** 1379 * Checks whether the MediaPlayer is looping or non-looping. 1380 * 1381 * @return true if the MediaPlayer is currently looping, false otherwise 1382 */ 1383 public native boolean isLooping(); 1384 1385 /** 1386 * Sets the volume on this player. 1387 * This API is recommended for balancing the output of audio streams 1388 * within an application. Unless you are writing an application to 1389 * control user settings, this API should be used in preference to 1390 * {@link AudioManager#setStreamVolume(int, int, int)} which sets the volume of ALL streams of 1391 * a particular type. Note that the passed volume values are raw scalars in range 0.0 to 1.0. 1392 * UI controls should be scaled logarithmically. 1393 * 1394 * @param leftVolume left volume scalar 1395 * @param rightVolume right volume scalar 1396 */ 1397 /* 1398 * FIXME: Merge this into javadoc comment above when setVolume(float) is not @hide. 1399 * The single parameter form below is preferred if the channel volumes don't need 1400 * to be set independently. 1401 */ 1402 public native void setVolume(float leftVolume, float rightVolume); 1403 1404 /** 1405 * Similar, excepts sets volume of all channels to same value. 1406 * @hide 1407 */ 1408 public void setVolume(float volume) { 1409 setVolume(volume, volume); 1410 } 1411 1412 /** 1413 * Currently not implemented, returns null. 1414 * @deprecated 1415 * @hide 1416 */ 1417 public native Bitmap getFrameAt(int msec) throws IllegalStateException; 1418 1419 /** 1420 * Sets the audio session ID. 1421 * 1422 * @param sessionId the audio session ID. 1423 * The audio session ID is a system wide unique identifier for the audio stream played by 1424 * this MediaPlayer instance. 1425 * The primary use of the audio session ID is to associate audio effects to a particular 1426 * instance of MediaPlayer: if an audio session ID is provided when creating an audio effect, 1427 * this effect will be applied only to the audio content of media players within the same 1428 * audio session and not to the output mix. 1429 * When created, a MediaPlayer instance automatically generates its own audio session ID. 1430 * However, it is possible to force this player to be part of an already existing audio session 1431 * by calling this method. 1432 * This method must be called before one of the overloaded <code> setDataSource </code> methods. 1433 * @throws IllegalStateException if it is called in an invalid state 1434 */ 1435 public native void setAudioSessionId(int sessionId) throws IllegalArgumentException, IllegalStateException; 1436 1437 /** 1438 * Returns the audio session ID. 1439 * 1440 * @return the audio session ID. {@see #setAudioSessionId(int)} 1441 * Note that the audio session ID is 0 only if a problem occured when the MediaPlayer was contructed. 1442 */ 1443 public native int getAudioSessionId(); 1444 1445 /** 1446 * Attaches an auxiliary effect to the player. A typical auxiliary effect is a reverberation 1447 * effect which can be applied on any sound source that directs a certain amount of its 1448 * energy to this effect. This amount is defined by setAuxEffectSendLevel(). 1449 * {@see #setAuxEffectSendLevel(float)}. 1450 * <p>After creating an auxiliary effect (e.g. 1451 * {@link android.media.audiofx.EnvironmentalReverb}), retrieve its ID with 1452 * {@link android.media.audiofx.AudioEffect#getId()} and use it when calling this method 1453 * to attach the player to the effect. 1454 * <p>To detach the effect from the player, call this method with a null effect id. 1455 * <p>This method must be called after one of the overloaded <code> setDataSource </code> 1456 * methods. 1457 * @param effectId system wide unique id of the effect to attach 1458 */ 1459 public native void attachAuxEffect(int effectId); 1460 1461 /* Do not change these values (starting with KEY_PARAMETER) without updating 1462 * their counterparts in include/media/mediaplayer.h! 1463 */ 1464 1465 // There are currently no defined keys usable from Java with get*Parameter. 1466 // But if any keys are defined, the order must be kept in sync with include/media/mediaplayer.h. 1467 // private static final int KEY_PARAMETER_... = ...; 1468 1469 /** 1470 * Sets the parameter indicated by key. 1471 * @param key key indicates the parameter to be set. 1472 * @param value value of the parameter to be set. 1473 * @return true if the parameter is set successfully, false otherwise 1474 * {@hide} 1475 */ 1476 public native boolean setParameter(int key, Parcel value); 1477 1478 /** 1479 * Sets the parameter indicated by key. 1480 * @param key key indicates the parameter to be set. 1481 * @param value value of the parameter to be set. 1482 * @return true if the parameter is set successfully, false otherwise 1483 * {@hide} 1484 */ 1485 public boolean setParameter(int key, String value) { 1486 Parcel p = Parcel.obtain(); 1487 p.writeString(value); 1488 boolean ret = setParameter(key, p); 1489 p.recycle(); 1490 return ret; 1491 } 1492 1493 /** 1494 * Sets the parameter indicated by key. 1495 * @param key key indicates the parameter to be set. 1496 * @param value value of the parameter to be set. 1497 * @return true if the parameter is set successfully, false otherwise 1498 * {@hide} 1499 */ 1500 public boolean setParameter(int key, int value) { 1501 Parcel p = Parcel.obtain(); 1502 p.writeInt(value); 1503 boolean ret = setParameter(key, p); 1504 p.recycle(); 1505 return ret; 1506 } 1507 1508 /* 1509 * Gets the value of the parameter indicated by key. 1510 * @param key key indicates the parameter to get. 1511 * @param reply value of the parameter to get. 1512 */ 1513 private native void getParameter(int key, Parcel reply); 1514 1515 /** 1516 * Gets the value of the parameter indicated by key. 1517 * The caller is responsible for recycling the returned parcel. 1518 * @param key key indicates the parameter to get. 1519 * @return value of the parameter. 1520 * {@hide} 1521 */ 1522 public Parcel getParcelParameter(int key) { 1523 Parcel p = Parcel.obtain(); 1524 getParameter(key, p); 1525 return p; 1526 } 1527 1528 /** 1529 * Gets the value of the parameter indicated by key. 1530 * @param key key indicates the parameter to get. 1531 * @return value of the parameter. 1532 * {@hide} 1533 */ 1534 public String getStringParameter(int key) { 1535 Parcel p = Parcel.obtain(); 1536 getParameter(key, p); 1537 String ret = p.readString(); 1538 p.recycle(); 1539 return ret; 1540 } 1541 1542 /** 1543 * Gets the value of the parameter indicated by key. 1544 * @param key key indicates the parameter to get. 1545 * @return value of the parameter. 1546 * {@hide} 1547 */ 1548 public int getIntParameter(int key) { 1549 Parcel p = Parcel.obtain(); 1550 getParameter(key, p); 1551 int ret = p.readInt(); 1552 p.recycle(); 1553 return ret; 1554 } 1555 1556 /** 1557 * Sets the send level of the player to the attached auxiliary effect 1558 * {@see #attachAuxEffect(int)}. The level value range is 0 to 1.0. 1559 * <p>By default the send level is 0, so even if an effect is attached to the player 1560 * this method must be called for the effect to be applied. 1561 * <p>Note that the passed level value is a raw scalar. UI controls should be scaled 1562 * logarithmically: the gain applied by audio framework ranges from -72dB to 0dB, 1563 * so an appropriate conversion from linear UI input x to level is: 1564 * x == 0 -> level = 0 1565 * 0 < x <= R -> level = 10^(72*(x-R)/20/R) 1566 * @param level send level scalar 1567 */ 1568 public native void setAuxEffectSendLevel(float level); 1569 1570 /* 1571 * @param request Parcel destinated to the media player. The 1572 * Interface token must be set to the IMediaPlayer 1573 * one to be routed correctly through the system. 1574 * @param reply[out] Parcel that will contain the reply. 1575 * @return The status code. 1576 */ 1577 private native final int native_invoke(Parcel request, Parcel reply); 1578 1579 1580 /* 1581 * @param update_only If true fetch only the set of metadata that have 1582 * changed since the last invocation of getMetadata. 1583 * The set is built using the unfiltered 1584 * notifications the native player sent to the 1585 * MediaPlayerService during that period of 1586 * time. If false, all the metadatas are considered. 1587 * @param apply_filter If true, once the metadata set has been built based on 1588 * the value update_only, the current filter is applied. 1589 * @param reply[out] On return contains the serialized 1590 * metadata. Valid only if the call was successful. 1591 * @return The status code. 1592 */ 1593 private native final boolean native_getMetadata(boolean update_only, 1594 boolean apply_filter, 1595 Parcel reply); 1596 1597 /* 1598 * @param request Parcel with the 2 serialized lists of allowed 1599 * metadata types followed by the one to be 1600 * dropped. Each list starts with an integer 1601 * indicating the number of metadata type elements. 1602 * @return The status code. 1603 */ 1604 private native final int native_setMetadataFilter(Parcel request); 1605 1606 private static native final void native_init(); 1607 private native final void native_setup(Object mediaplayer_this); 1608 private native final void native_finalize(); 1609 1610 /** 1611 * Class for MediaPlayer to return each audio/video/subtitle track's metadata. 1612 * 1613 * @see android.media.MediaPlayer#getTrackInfo 1614 */ 1615 static public class TrackInfo implements Parcelable { 1616 /** 1617 * Gets the track type. 1618 * @return TrackType which indicates if the track is video, audio, timed text. 1619 */ 1620 public int getTrackType() { 1621 return mTrackType; 1622 } 1623 1624 /** 1625 * Gets the language code of the track. 1626 * @return a language code in either way of ISO-639-1 or ISO-639-2. 1627 * When the language is unknown or could not be determined, 1628 * ISO-639-2 language code, "und", is returned. 1629 */ 1630 public String getLanguage() { 1631 return mLanguage; 1632 } 1633 1634 public static final int MEDIA_TRACK_TYPE_UNKNOWN = 0; 1635 public static final int MEDIA_TRACK_TYPE_VIDEO = 1; 1636 public static final int MEDIA_TRACK_TYPE_AUDIO = 2; 1637 public static final int MEDIA_TRACK_TYPE_TIMEDTEXT = 3; 1638 1639 final int mTrackType; 1640 final String mLanguage; 1641 1642 TrackInfo(Parcel in) { 1643 mTrackType = in.readInt(); 1644 mLanguage = in.readString(); 1645 } 1646 1647 /** 1648 * {@inheritDoc} 1649 */ 1650 @Override 1651 public int describeContents() { 1652 return 0; 1653 } 1654 1655 /** 1656 * {@inheritDoc} 1657 */ 1658 @Override 1659 public void writeToParcel(Parcel dest, int flags) { 1660 dest.writeInt(mTrackType); 1661 dest.writeString(mLanguage); 1662 } 1663 1664 /** 1665 * Used to read a TrackInfo from a Parcel. 1666 */ 1667 static final Parcelable.Creator<TrackInfo> CREATOR 1668 = new Parcelable.Creator<TrackInfo>() { 1669 @Override 1670 public TrackInfo createFromParcel(Parcel in) { 1671 return new TrackInfo(in); 1672 } 1673 1674 @Override 1675 public TrackInfo[] newArray(int size) { 1676 return new TrackInfo[size]; 1677 } 1678 }; 1679 1680 }; 1681 1682 /** 1683 * Returns an array of track information. 1684 * 1685 * @return Array of track info. The total number of tracks is the array length. 1686 * Must be called again if an external timed text source has been added after any of the 1687 * addTimedTextSource methods are called. 1688 * @throws IllegalStateException if it is called in an invalid state. 1689 */ 1690 public TrackInfo[] getTrackInfo() throws IllegalStateException { 1691 Parcel request = Parcel.obtain(); 1692 Parcel reply = Parcel.obtain(); 1693 try { 1694 request.writeInterfaceToken(IMEDIA_PLAYER); 1695 request.writeInt(INVOKE_ID_GET_TRACK_INFO); 1696 invoke(request, reply); 1697 TrackInfo trackInfo[] = reply.createTypedArray(TrackInfo.CREATOR); 1698 return trackInfo; 1699 } finally { 1700 request.recycle(); 1701 reply.recycle(); 1702 } 1703 } 1704 1705 /* Do not change these values without updating their counterparts 1706 * in include/media/stagefright/MediaDefs.h and media/libstagefright/MediaDefs.cpp! 1707 */ 1708 /** 1709 * MIME type for SubRip (SRT) container. Used in addTimedTextSource APIs. 1710 */ 1711 public static final String MEDIA_MIMETYPE_TEXT_SUBRIP = "application/x-subrip"; 1712 1713 /* 1714 * A helper function to check if the mime type is supported by media framework. 1715 */ 1716 private static boolean availableMimeTypeForExternalSource(String mimeType) { 1717 if (mimeType == MEDIA_MIMETYPE_TEXT_SUBRIP) { 1718 return true; 1719 } 1720 return false; 1721 } 1722 1723 /* TODO: Limit the total number of external timed text source to a reasonable number. 1724 */ 1725 /** 1726 * Adds an external timed text source file. 1727 * 1728 * Currently supported format is SubRip with the file extension .srt, case insensitive. 1729 * Note that a single external timed text source may contain multiple tracks in it. 1730 * One can find the total number of available tracks using {@link #getTrackInfo()} to see what 1731 * additional tracks become available after this method call. 1732 * 1733 * @param path The file path of external timed text source file. 1734 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1735 * @throws IOException if the file cannot be accessed or is corrupted. 1736 * @throws IllegalArgumentException if the mimeType is not supported. 1737 * @throws IllegalStateException if called in an invalid state. 1738 */ 1739 public void addTimedTextSource(String path, String mimeType) 1740 throws IOException, IllegalArgumentException, IllegalStateException { 1741 if (!availableMimeTypeForExternalSource(mimeType)) { 1742 final String msg = "Illegal mimeType for timed text source: " + mimeType; 1743 throw new IllegalArgumentException(msg); 1744 } 1745 1746 File file = new File(path); 1747 if (file.exists()) { 1748 FileInputStream is = new FileInputStream(file); 1749 FileDescriptor fd = is.getFD(); 1750 addTimedTextSource(fd, mimeType); 1751 is.close(); 1752 } else { 1753 // We do not support the case where the path is not a file. 1754 throw new IOException(path); 1755 } 1756 } 1757 1758 /** 1759 * Adds an external timed text source file (Uri). 1760 * 1761 * Currently supported format is SubRip with the file extension .srt, case insensitive. 1762 * Note that a single external timed text source may contain multiple tracks in it. 1763 * One can find the total number of available tracks using {@link #getTrackInfo()} to see what 1764 * additional tracks become available after this method call. 1765 * 1766 * @param context the Context to use when resolving the Uri 1767 * @param uri the Content URI of the data you want to play 1768 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1769 * @throws IOException if the file cannot be accessed or is corrupted. 1770 * @throws IllegalArgumentException if the mimeType is not supported. 1771 * @throws IllegalStateException if called in an invalid state. 1772 */ 1773 public void addTimedTextSource(Context context, Uri uri, String mimeType) 1774 throws IOException, IllegalArgumentException, IllegalStateException { 1775 String scheme = uri.getScheme(); 1776 if(scheme == null || scheme.equals("file")) { 1777 addTimedTextSource(uri.getPath(), mimeType); 1778 return; 1779 } 1780 1781 AssetFileDescriptor fd = null; 1782 try { 1783 ContentResolver resolver = context.getContentResolver(); 1784 fd = resolver.openAssetFileDescriptor(uri, "r"); 1785 if (fd == null) { 1786 return; 1787 } 1788 addTimedTextSource(fd.getFileDescriptor(), mimeType); 1789 return; 1790 } catch (SecurityException ex) { 1791 } catch (IOException ex) { 1792 } finally { 1793 if (fd != null) { 1794 fd.close(); 1795 } 1796 } 1797 } 1798 1799 /** 1800 * Adds an external timed text source file (FileDescriptor). 1801 * 1802 * It is the caller's responsibility to close the file descriptor. 1803 * It is safe to do so as soon as this call returns. 1804 * 1805 * Currently supported format is SubRip. Note that a single external timed text source may 1806 * contain multiple tracks in it. One can find the total number of available tracks 1807 * using {@link #getTrackInfo()} to see what additional tracks become available 1808 * after this method call. 1809 * 1810 * @param fd the FileDescriptor for the file you want to play 1811 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1812 * @throws IllegalArgumentException if the mimeType is not supported. 1813 * @throws IllegalStateException if called in an invalid state. 1814 */ 1815 public void addTimedTextSource(FileDescriptor fd, String mimeType) 1816 throws IllegalArgumentException, IllegalStateException { 1817 // intentionally less than LONG_MAX 1818 addTimedTextSource(fd, 0, 0x7ffffffffffffffL, mimeType); 1819 } 1820 1821 /** 1822 * Adds an external timed text file (FileDescriptor). 1823 * 1824 * It is the caller's responsibility to close the file descriptor. 1825 * It is safe to do so as soon as this call returns. 1826 * 1827 * Currently supported format is SubRip. Note that a single external timed text source may 1828 * contain multiple tracks in it. One can find the total number of available tracks 1829 * using {@link #getTrackInfo()} to see what additional tracks become available 1830 * after this method call. 1831 * 1832 * @param fd the FileDescriptor for the file you want to play 1833 * @param offset the offset into the file where the data to be played starts, in bytes 1834 * @param length the length in bytes of the data to be played 1835 * @param mimeType The mime type of the file. Must be one of the mime types listed above. 1836 * @throws IllegalArgumentException if the mimeType is not supported. 1837 * @throws IllegalStateException if called in an invalid state. 1838 */ 1839 public void addTimedTextSource(FileDescriptor fd, long offset, long length, String mimeType) 1840 throws IllegalArgumentException, IllegalStateException { 1841 if (!availableMimeTypeForExternalSource(mimeType)) { 1842 throw new IllegalArgumentException("Illegal mimeType for timed text source: " + mimeType); 1843 } 1844 1845 Parcel request = Parcel.obtain(); 1846 Parcel reply = Parcel.obtain(); 1847 try { 1848 request.writeInterfaceToken(IMEDIA_PLAYER); 1849 request.writeInt(INVOKE_ID_ADD_EXTERNAL_SOURCE_FD); 1850 request.writeFileDescriptor(fd); 1851 request.writeLong(offset); 1852 request.writeLong(length); 1853 request.writeString(mimeType); 1854 invoke(request, reply); 1855 } finally { 1856 request.recycle(); 1857 reply.recycle(); 1858 } 1859 } 1860 1861 /** 1862 * Selects a track. 1863 * <p> 1864 * If a MediaPlayer is in invalid state, it throws an IllegalStateException exception. 1865 * If a MediaPlayer is in <em>Started</em> state, the selected track is presented immediately. 1866 * If a MediaPlayer is not in Started state, it just marks the track to be played. 1867 * </p> 1868 * <p> 1869 * In any valid state, if it is called multiple times on the same type of track (ie. Video, 1870 * Audio, Timed Text), the most recent one will be chosen. 1871 * </p> 1872 * <p> 1873 * The first audio and video tracks are selected by default if available, even though 1874 * this method is not called. However, no timed text track will be selected until 1875 * this function is called. 1876 * </p> 1877 * <p> 1878 * Currently, only timed text tracks or audio tracks can be selected via this method. 1879 * In addition, the support for selecting an audio track at runtime is pretty limited 1880 * in that an audio track can only be selected in the <em>Prepared</em> state. 1881 * </p> 1882 * @param index the index of the track to be selected. The valid range of the index 1883 * is 0..total number of track - 1. The total number of tracks as well as the type of 1884 * each individual track can be found by calling {@link #getTrackInfo()} method. 1885 * @throws IllegalStateException if called in an invalid state. 1886 * 1887 * @see android.media.MediaPlayer#getTrackInfo 1888 */ 1889 public void selectTrack(int index) throws IllegalStateException { 1890 selectOrDeselectTrack(index, true /* select */); 1891 } 1892 1893 /** 1894 * Deselect a track. 1895 * <p> 1896 * Currently, the track must be a timed text track and no audio or video tracks can be 1897 * deselected. If the timed text track identified by index has not been 1898 * selected before, it throws an exception. 1899 * </p> 1900 * @param index the index of the track to be deselected. The valid range of the index 1901 * is 0..total number of tracks - 1. The total number of tracks as well as the type of 1902 * each individual track can be found by calling {@link #getTrackInfo()} method. 1903 * @throws IllegalStateException if called in an invalid state. 1904 * 1905 * @see android.media.MediaPlayer#getTrackInfo 1906 */ 1907 public void deselectTrack(int index) throws IllegalStateException { 1908 selectOrDeselectTrack(index, false /* select */); 1909 } 1910 1911 private void selectOrDeselectTrack(int index, boolean select) 1912 throws IllegalStateException { 1913 Parcel request = Parcel.obtain(); 1914 Parcel reply = Parcel.obtain(); 1915 try { 1916 request.writeInterfaceToken(IMEDIA_PLAYER); 1917 request.writeInt(select? INVOKE_ID_SELECT_TRACK: INVOKE_ID_DESELECT_TRACK); 1918 request.writeInt(index); 1919 invoke(request, reply); 1920 } finally { 1921 request.recycle(); 1922 reply.recycle(); 1923 } 1924 } 1925 1926 1927 /** 1928 * @param reply Parcel with audio/video duration info for battery 1929 tracking usage 1930 * @return The status code. 1931 * {@hide} 1932 */ 1933 public native static int native_pullBatteryData(Parcel reply); 1934 1935 /** 1936 * Sets the target UDP re-transmit endpoint for the low level player. 1937 * Generally, the address portion of the endpoint is an IP multicast 1938 * address, although a unicast address would be equally valid. When a valid 1939 * retransmit endpoint has been set, the media player will not decode and 1940 * render the media presentation locally. Instead, the player will attempt 1941 * to re-multiplex its media data using the Android@Home RTP profile and 1942 * re-transmit to the target endpoint. Receiver devices (which may be 1943 * either the same as the transmitting device or different devices) may 1944 * instantiate, prepare, and start a receiver player using a setDataSource 1945 * URL of the form... 1946 * 1947 * aahRX://<multicastIP>:<port> 1948 * 1949 * to receive, decode and render the re-transmitted content. 1950 * 1951 * setRetransmitEndpoint may only be called before setDataSource has been 1952 * called; while the player is in the Idle state. 1953 * 1954 * @param endpoint the address and UDP port of the re-transmission target or 1955 * null if no re-transmission is to be performed. 1956 * @throws IllegalStateException if it is called in an invalid state 1957 * @throws IllegalArgumentException if the retransmit endpoint is supplied, 1958 * but invalid. 1959 * 1960 * {@hide} pending API council 1961 */ 1962 public void setRetransmitEndpoint(InetSocketAddress endpoint) 1963 throws IllegalStateException, IllegalArgumentException 1964 { 1965 String addrString = null; 1966 int port = 0; 1967 1968 if (null != endpoint) { 1969 addrString = endpoint.getAddress().getHostAddress(); 1970 port = endpoint.getPort(); 1971 } 1972 1973 int ret = native_setRetransmitEndpoint(addrString, port); 1974 if (ret != 0) { 1975 throw new IllegalArgumentException("Illegal re-transmit endpoint; native ret " + ret); 1976 } 1977 } 1978 1979 private native final int native_setRetransmitEndpoint(String addrString, int port); 1980 1981 @Override 1982 protected void finalize() { native_finalize(); } 1983 1984 /* Do not change these values without updating their counterparts 1985 * in include/media/mediaplayer.h! 1986 */ 1987 private static final int MEDIA_NOP = 0; // interface test message 1988 private static final int MEDIA_PREPARED = 1; 1989 private static final int MEDIA_PLAYBACK_COMPLETE = 2; 1990 private static final int MEDIA_BUFFERING_UPDATE = 3; 1991 private static final int MEDIA_SEEK_COMPLETE = 4; 1992 private static final int MEDIA_SET_VIDEO_SIZE = 5; 1993 private static final int MEDIA_TIMED_TEXT = 99; 1994 private static final int MEDIA_ERROR = 100; 1995 private static final int MEDIA_INFO = 200; 1996 1997 private class EventHandler extends Handler 1998 { 1999 private MediaPlayer mMediaPlayer; 2000 2001 public EventHandler(MediaPlayer mp, Looper looper) { 2002 super(looper); 2003 mMediaPlayer = mp; 2004 } 2005 2006 @Override 2007 public void handleMessage(Message msg) { 2008 if (mMediaPlayer.mNativeContext == 0) { 2009 Log.w(TAG, "mediaplayer went away with unhandled events"); 2010 return; 2011 } 2012 switch(msg.what) { 2013 case MEDIA_PREPARED: 2014 if (mOnPreparedListener != null) 2015 mOnPreparedListener.onPrepared(mMediaPlayer); 2016 return; 2017 2018 case MEDIA_PLAYBACK_COMPLETE: 2019 if (mOnCompletionListener != null) 2020 mOnCompletionListener.onCompletion(mMediaPlayer); 2021 stayAwake(false); 2022 return; 2023 2024 case MEDIA_BUFFERING_UPDATE: 2025 if (mOnBufferingUpdateListener != null) 2026 mOnBufferingUpdateListener.onBufferingUpdate(mMediaPlayer, msg.arg1); 2027 return; 2028 2029 case MEDIA_SEEK_COMPLETE: 2030 if (mOnSeekCompleteListener != null) 2031 mOnSeekCompleteListener.onSeekComplete(mMediaPlayer); 2032 return; 2033 2034 case MEDIA_SET_VIDEO_SIZE: 2035 if (mOnVideoSizeChangedListener != null) 2036 mOnVideoSizeChangedListener.onVideoSizeChanged(mMediaPlayer, msg.arg1, msg.arg2); 2037 return; 2038 2039 case MEDIA_ERROR: 2040 Log.e(TAG, "Error (" + msg.arg1 + "," + msg.arg2 + ")"); 2041 boolean error_was_handled = false; 2042 if (mOnErrorListener != null) { 2043 error_was_handled = mOnErrorListener.onError(mMediaPlayer, msg.arg1, msg.arg2); 2044 } 2045 if (mOnCompletionListener != null && ! error_was_handled) { 2046 mOnCompletionListener.onCompletion(mMediaPlayer); 2047 } 2048 stayAwake(false); 2049 return; 2050 2051 case MEDIA_INFO: 2052 if (msg.arg1 != MEDIA_INFO_VIDEO_TRACK_LAGGING) { 2053 Log.i(TAG, "Info (" + msg.arg1 + "," + msg.arg2 + ")"); 2054 } 2055 if (mOnInfoListener != null) { 2056 mOnInfoListener.onInfo(mMediaPlayer, msg.arg1, msg.arg2); 2057 } 2058 // No real default action so far. 2059 return; 2060 case MEDIA_TIMED_TEXT: 2061 if (mOnTimedTextListener == null) 2062 return; 2063 if (msg.obj == null) { 2064 mOnTimedTextListener.onTimedText(mMediaPlayer, null); 2065 } else { 2066 if (msg.obj instanceof Parcel) { 2067 Parcel parcel = (Parcel)msg.obj; 2068 TimedText text = new TimedText(parcel); 2069 parcel.recycle(); 2070 mOnTimedTextListener.onTimedText(mMediaPlayer, text); 2071 } 2072 } 2073 return; 2074 2075 case MEDIA_NOP: // interface test message - ignore 2076 break; 2077 2078 default: 2079 Log.e(TAG, "Unknown message type " + msg.what); 2080 return; 2081 } 2082 } 2083 } 2084 2085 /* 2086 * Called from native code when an interesting event happens. This method 2087 * just uses the EventHandler system to post the event back to the main app thread. 2088 * We use a weak reference to the original MediaPlayer object so that the native 2089 * code is safe from the object disappearing from underneath it. (This is 2090 * the cookie passed to native_setup().) 2091 */ 2092 private static void postEventFromNative(Object mediaplayer_ref, 2093 int what, int arg1, int arg2, Object obj) 2094 { 2095 MediaPlayer mp = (MediaPlayer)((WeakReference)mediaplayer_ref).get(); 2096 if (mp == null) { 2097 return; 2098 } 2099 2100 if (what == MEDIA_INFO && arg1 == MEDIA_INFO_STARTED_AS_NEXT) { 2101 // this acquires the wakelock if needed, and sets the client side state 2102 mp.start(); 2103 } 2104 if (mp.mEventHandler != null) { 2105 Message m = mp.mEventHandler.obtainMessage(what, arg1, arg2, obj); 2106 mp.mEventHandler.sendMessage(m); 2107 } 2108 } 2109 2110 /** 2111 * Interface definition for a callback to be invoked when the media 2112 * source is ready for playback. 2113 */ 2114 public interface OnPreparedListener 2115 { 2116 /** 2117 * Called when the media file is ready for playback. 2118 * 2119 * @param mp the MediaPlayer that is ready for playback 2120 */ 2121 void onPrepared(MediaPlayer mp); 2122 } 2123 2124 /** 2125 * Register a callback to be invoked when the media source is ready 2126 * for playback. 2127 * 2128 * @param listener the callback that will be run 2129 */ 2130 public void setOnPreparedListener(OnPreparedListener listener) 2131 { 2132 mOnPreparedListener = listener; 2133 } 2134 2135 private OnPreparedListener mOnPreparedListener; 2136 2137 /** 2138 * Interface definition for a callback to be invoked when playback of 2139 * a media source has completed. 2140 */ 2141 public interface OnCompletionListener 2142 { 2143 /** 2144 * Called when the end of a media source is reached during playback. 2145 * 2146 * @param mp the MediaPlayer that reached the end of the file 2147 */ 2148 void onCompletion(MediaPlayer mp); 2149 } 2150 2151 /** 2152 * Register a callback to be invoked when the end of a media source 2153 * has been reached during playback. 2154 * 2155 * @param listener the callback that will be run 2156 */ 2157 public void setOnCompletionListener(OnCompletionListener listener) 2158 { 2159 mOnCompletionListener = listener; 2160 } 2161 2162 private OnCompletionListener mOnCompletionListener; 2163 2164 /** 2165 * Interface definition of a callback to be invoked indicating buffering 2166 * status of a media resource being streamed over the network. 2167 */ 2168 public interface OnBufferingUpdateListener 2169 { 2170 /** 2171 * Called to update status in buffering a media stream received through 2172 * progressive HTTP download. The received buffering percentage 2173 * indicates how much of the content has been buffered or played. 2174 * For example a buffering update of 80 percent when half the content 2175 * has already been played indicates that the next 30 percent of the 2176 * content to play has been buffered. 2177 * 2178 * @param mp the MediaPlayer the update pertains to 2179 * @param percent the percentage (0-100) of the content 2180 * that has been buffered or played thus far 2181 */ 2182 void onBufferingUpdate(MediaPlayer mp, int percent); 2183 } 2184 2185 /** 2186 * Register a callback to be invoked when the status of a network 2187 * stream's buffer has changed. 2188 * 2189 * @param listener the callback that will be run. 2190 */ 2191 public void setOnBufferingUpdateListener(OnBufferingUpdateListener listener) 2192 { 2193 mOnBufferingUpdateListener = listener; 2194 } 2195 2196 private OnBufferingUpdateListener mOnBufferingUpdateListener; 2197 2198 /** 2199 * Interface definition of a callback to be invoked indicating 2200 * the completion of a seek operation. 2201 */ 2202 public interface OnSeekCompleteListener 2203 { 2204 /** 2205 * Called to indicate the completion of a seek operation. 2206 * 2207 * @param mp the MediaPlayer that issued the seek operation 2208 */ 2209 public void onSeekComplete(MediaPlayer mp); 2210 } 2211 2212 /** 2213 * Register a callback to be invoked when a seek operation has been 2214 * completed. 2215 * 2216 * @param listener the callback that will be run 2217 */ 2218 public void setOnSeekCompleteListener(OnSeekCompleteListener listener) 2219 { 2220 mOnSeekCompleteListener = listener; 2221 } 2222 2223 private OnSeekCompleteListener mOnSeekCompleteListener; 2224 2225 /** 2226 * Interface definition of a callback to be invoked when the 2227 * video size is first known or updated 2228 */ 2229 public interface OnVideoSizeChangedListener 2230 { 2231 /** 2232 * Called to indicate the video size 2233 * 2234 * The video size (width and height) could be 0 if there was no video, 2235 * no display surface was set, or the value was not determined yet. 2236 * 2237 * @param mp the MediaPlayer associated with this callback 2238 * @param width the width of the video 2239 * @param height the height of the video 2240 */ 2241 public void onVideoSizeChanged(MediaPlayer mp, int width, int height); 2242 } 2243 2244 /** 2245 * Register a callback to be invoked when the video size is 2246 * known or updated. 2247 * 2248 * @param listener the callback that will be run 2249 */ 2250 public void setOnVideoSizeChangedListener(OnVideoSizeChangedListener listener) 2251 { 2252 mOnVideoSizeChangedListener = listener; 2253 } 2254 2255 private OnVideoSizeChangedListener mOnVideoSizeChangedListener; 2256 2257 /** 2258 * Interface definition of a callback to be invoked when a 2259 * timed text is available for display. 2260 */ 2261 public interface OnTimedTextListener 2262 { 2263 /** 2264 * Called to indicate an avaliable timed text 2265 * 2266 * @param mp the MediaPlayer associated with this callback 2267 * @param text the timed text sample which contains the text 2268 * needed to be displayed and the display format. 2269 */ 2270 public void onTimedText(MediaPlayer mp, TimedText text); 2271 } 2272 2273 /** 2274 * Register a callback to be invoked when a timed text is available 2275 * for display. 2276 * 2277 * @param listener the callback that will be run 2278 */ 2279 public void setOnTimedTextListener(OnTimedTextListener listener) 2280 { 2281 mOnTimedTextListener = listener; 2282 } 2283 2284 private OnTimedTextListener mOnTimedTextListener; 2285 2286 2287 /* Do not change these values without updating their counterparts 2288 * in include/media/mediaplayer.h! 2289 */ 2290 /** Unspecified media player error. 2291 * @see android.media.MediaPlayer.OnErrorListener 2292 */ 2293 public static final int MEDIA_ERROR_UNKNOWN = 1; 2294 2295 /** Media server died. In this case, the application must release the 2296 * MediaPlayer object and instantiate a new one. 2297 * @see android.media.MediaPlayer.OnErrorListener 2298 */ 2299 public static final int MEDIA_ERROR_SERVER_DIED = 100; 2300 2301 /** The video is streamed and its container is not valid for progressive 2302 * playback i.e the video's index (e.g moov atom) is not at the start of the 2303 * file. 2304 * @see android.media.MediaPlayer.OnErrorListener 2305 */ 2306 public static final int MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK = 200; 2307 2308 /** File or network related operation errors. */ 2309 public static final int MEDIA_ERROR_IO = -1004; 2310 /** Bitstream is not conforming to the related coding standard or file spec. */ 2311 public static final int MEDIA_ERROR_MALFORMED = -1007; 2312 /** Bitstream is conforming to the related coding standard or file spec, but 2313 * the media framework does not support the feature. */ 2314 public static final int MEDIA_ERROR_UNSUPPORTED = -1010; 2315 /** Some operation takes too long to complete, usually more than 3-5 seconds. */ 2316 public static final int MEDIA_ERROR_TIMED_OUT = -110; 2317 2318 /** 2319 * Interface definition of a callback to be invoked when there 2320 * has been an error during an asynchronous operation (other errors 2321 * will throw exceptions at method call time). 2322 */ 2323 public interface OnErrorListener 2324 { 2325 /** 2326 * Called to indicate an error. 2327 * 2328 * @param mp the MediaPlayer the error pertains to 2329 * @param what the type of error that has occurred: 2330 * <ul> 2331 * <li>{@link #MEDIA_ERROR_UNKNOWN} 2332 * <li>{@link #MEDIA_ERROR_SERVER_DIED} 2333 * </ul> 2334 * @param extra an extra code, specific to the error. Typically 2335 * implementation dependent. 2336 * <ul> 2337 * <li>{@link #MEDIA_ERROR_IO} 2338 * <li>{@link #MEDIA_ERROR_MALFORMED} 2339 * <li>{@link #MEDIA_ERROR_UNSUPPORTED} 2340 * <li>{@link #MEDIA_ERROR_TIMED_OUT} 2341 * </ul> 2342 * @return True if the method handled the error, false if it didn't. 2343 * Returning false, or not having an OnErrorListener at all, will 2344 * cause the OnCompletionListener to be called. 2345 */ 2346 boolean onError(MediaPlayer mp, int what, int extra); 2347 } 2348 2349 /** 2350 * Register a callback to be invoked when an error has happened 2351 * during an asynchronous operation. 2352 * 2353 * @param listener the callback that will be run 2354 */ 2355 public void setOnErrorListener(OnErrorListener listener) 2356 { 2357 mOnErrorListener = listener; 2358 } 2359 2360 private OnErrorListener mOnErrorListener; 2361 2362 2363 /* Do not change these values without updating their counterparts 2364 * in include/media/mediaplayer.h! 2365 */ 2366 /** Unspecified media player info. 2367 * @see android.media.MediaPlayer.OnInfoListener 2368 */ 2369 public static final int MEDIA_INFO_UNKNOWN = 1; 2370 2371 /** The player was started because it was used as the next player for another 2372 * player, which just completed playback. 2373 * @see android.media.MediaPlayer.OnInfoListener 2374 * @hide 2375 */ 2376 public static final int MEDIA_INFO_STARTED_AS_NEXT = 2; 2377 2378 /** The player just pushed the very first video frame for rendering. 2379 * @see android.media.MediaPlayer.OnInfoListener 2380 */ 2381 public static final int MEDIA_INFO_VIDEO_RENDERING_START = 3; 2382 2383 /** The video is too complex for the decoder: it can't decode frames fast 2384 * enough. Possibly only the audio plays fine at this stage. 2385 * @see android.media.MediaPlayer.OnInfoListener 2386 */ 2387 public static final int MEDIA_INFO_VIDEO_TRACK_LAGGING = 700; 2388 2389 /** MediaPlayer is temporarily pausing playback internally in order to 2390 * buffer more data. 2391 * @see android.media.MediaPlayer.OnInfoListener 2392 */ 2393 public static final int MEDIA_INFO_BUFFERING_START = 701; 2394 2395 /** MediaPlayer is resuming playback after filling buffers. 2396 * @see android.media.MediaPlayer.OnInfoListener 2397 */ 2398 public static final int MEDIA_INFO_BUFFERING_END = 702; 2399 2400 /** Bad interleaving means that a media has been improperly interleaved or 2401 * not interleaved at all, e.g has all the video samples first then all the 2402 * audio ones. Video is playing but a lot of disk seeks may be happening. 2403 * @see android.media.MediaPlayer.OnInfoListener 2404 */ 2405 public static final int MEDIA_INFO_BAD_INTERLEAVING = 800; 2406 2407 /** The media cannot be seeked (e.g live stream) 2408 * @see android.media.MediaPlayer.OnInfoListener 2409 */ 2410 public static final int MEDIA_INFO_NOT_SEEKABLE = 801; 2411 2412 /** A new set of metadata is available. 2413 * @see android.media.MediaPlayer.OnInfoListener 2414 */ 2415 public static final int MEDIA_INFO_METADATA_UPDATE = 802; 2416 2417 /** Failed to handle timed text track properly. 2418 * @see android.media.MediaPlayer.OnInfoListener 2419 * 2420 * {@hide} 2421 */ 2422 public static final int MEDIA_INFO_TIMED_TEXT_ERROR = 900; 2423 2424 /** 2425 * Interface definition of a callback to be invoked to communicate some 2426 * info and/or warning about the media or its playback. 2427 */ 2428 public interface OnInfoListener 2429 { 2430 /** 2431 * Called to indicate an info or a warning. 2432 * 2433 * @param mp the MediaPlayer the info pertains to. 2434 * @param what the type of info or warning. 2435 * <ul> 2436 * <li>{@link #MEDIA_INFO_UNKNOWN} 2437 * <li>{@link #MEDIA_INFO_VIDEO_TRACK_LAGGING} 2438 * <li>{@link #MEDIA_INFO_VIDEO_RENDERING_START} 2439 * <li>{@link #MEDIA_INFO_BUFFERING_START} 2440 * <li>{@link #MEDIA_INFO_BUFFERING_END} 2441 * <li>{@link #MEDIA_INFO_BAD_INTERLEAVING} 2442 * <li>{@link #MEDIA_INFO_NOT_SEEKABLE} 2443 * <li>{@link #MEDIA_INFO_METADATA_UPDATE} 2444 * </ul> 2445 * @param extra an extra code, specific to the info. Typically 2446 * implementation dependent. 2447 * @return True if the method handled the info, false if it didn't. 2448 * Returning false, or not having an OnErrorListener at all, will 2449 * cause the info to be discarded. 2450 */ 2451 boolean onInfo(MediaPlayer mp, int what, int extra); 2452 } 2453 2454 /** 2455 * Register a callback to be invoked when an info/warning is available. 2456 * 2457 * @param listener the callback that will be run 2458 */ 2459 public void setOnInfoListener(OnInfoListener listener) 2460 { 2461 mOnInfoListener = listener; 2462 } 2463 2464 private OnInfoListener mOnInfoListener; 2465 2466 /* 2467 * Test whether a given video scaling mode is supported. 2468 */ 2469 private boolean isVideoScalingModeSupported(int mode) { 2470 return (mode == VIDEO_SCALING_MODE_SCALE_TO_FIT || 2471 mode == VIDEO_SCALING_MODE_SCALE_TO_FIT_WITH_CROPPING); 2472 } 2473 2474 private Context mProxyContext = null; 2475 private ProxyReceiver mProxyReceiver = null; 2476 2477 private void setupProxyListener(Context context) { 2478 IntentFilter filter = new IntentFilter(); 2479 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 2480 mProxyReceiver = new ProxyReceiver(); 2481 mProxyContext = context; 2482 2483 Intent currentProxy = 2484 context.getApplicationContext().registerReceiver(mProxyReceiver, filter); 2485 2486 if (currentProxy != null) { 2487 handleProxyBroadcast(currentProxy); 2488 } 2489 } 2490 2491 private void disableProxyListener() { 2492 if (mProxyReceiver == null) { 2493 return; 2494 } 2495 2496 Context appContext = mProxyContext.getApplicationContext(); 2497 if (appContext != null) { 2498 appContext.unregisterReceiver(mProxyReceiver); 2499 } 2500 2501 mProxyReceiver = null; 2502 mProxyContext = null; 2503 } 2504 2505 private void handleProxyBroadcast(Intent intent) { 2506 ProxyProperties props = 2507 (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 2508 2509 if (props == null || props.getHost() == null) { 2510 updateProxyConfig(null); 2511 } else { 2512 updateProxyConfig(props); 2513 } 2514 } 2515 2516 private class ProxyReceiver extends BroadcastReceiver { 2517 @Override 2518 public void onReceive(Context context, Intent intent) { 2519 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 2520 handleProxyBroadcast(intent); 2521 } 2522 } 2523 } 2524 2525 private native void updateProxyConfig(ProxyProperties props); 2526} 2527