git.sesse.net Git - vlc/blob - projects/macosx/framework/Sources/VLCMediaPlayer.m

   1 /*****************************************************************************
   2  * VLCMediaPlayer.m: VLCKit.framework VLCMediaPlayer implementation
   3  *****************************************************************************
   4  * Copyright (C) 2007-2009 Pierre d'Herbemont
   5  * Copyright (C) 2007-2009 the VideoLAN team
   6  * Partial Copyright (C) 2009 Felix Paul Kühne
   7  * $Id$
   8  *
   9  * Authors: Pierre d'Herbemont <pdherbemont # videolan.org>
  10  *          Faustion Osuna <enrique.osuna # gmail.com>
  11  *          Felix Paul Kühne <fkuehne # videolan.org>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  26  *****************************************************************************/
  27
  28 #import "VLCLibrary.h"
  29 #import "VLCMediaPlayer.h"
  30 #import "VLCEventManager.h"
  31 #import "VLCLibVLCBridging.h"
  32 #import "VLCVideoView.h"
  33 #ifdef HAVE_CONFIG_H
  34 # include "config.h"
  35 #endif
  36
  37 /* prevent system sleep */
  38 #import <CoreServices/CoreServices.h>
  39 /* FIXME: Ugly hack! */
  40 #ifdef __x86_64__
  41 #import <CoreServices/../Frameworks/OSServices.framework/Headers/Power.h>
  42 #endif
  43
  44 #include <vlc/vlc.h>
  45
  46 /* Notification Messages */
  47 NSString * VLCMediaPlayerTimeChanged    = @"VLCMediaPlayerTimeChanged";
  48 NSString * VLCMediaPlayerStateChanged   = @"VLCMediaPlayerStateChanged";
  49
  50 NSString * VLCMediaPlayerStateToString(VLCMediaPlayerState state)
  51 {
  52     static NSString * stateToStrings[] = {
  53         [VLCMediaPlayerStateStopped]      = @"VLCMediaPlayerStateStopped",
  54         [VLCMediaPlayerStateOpening]      = @"VLCMediaPlayerStateOpening",
  55         [VLCMediaPlayerStateBuffering]    = @"VLCMediaPlayerStateBuffering",
  56         [VLCMediaPlayerStateEnded]        = @"VLCMediaPlayerStateEnded",
  57         [VLCMediaPlayerStateError]        = @"VLCMediaPlayerStateError",
  58         [VLCMediaPlayerStatePlaying]      = @"VLCMediaPlayerStatePlaying",
  59         [VLCMediaPlayerStatePaused]       = @"VLCMediaPlayerStatePaused"
  60     };
  61     return stateToStrings[state];
  62 }
  63
  64 /* libvlc event callback */
  65 static void HandleMediaInstanceVolumeChanged(const libvlc_event_t * event, void * self)
  66 {
  67     [[VLCEventManager sharedManager] callOnMainThreadDelegateOfObject:self
  68                                                    withDelegateMethod:@selector(mediaPlayerVolumeChanged:)
  69                                                  withNotificationName:VLCMediaPlayerVolumeChanged];
  70 }
  71
  72 static void HandleMediaTimeChanged(const libvlc_event_t * event, void * self)
  73 {
  74     NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
  75     [[VLCEventManager sharedManager] callOnMainThreadObject:self
  76                                                  withMethod:@selector(mediaPlayerTimeChanged:)
  77                                        withArgumentAsObject:[NSNumber numberWithLongLong:event->u.media_player_time_changed.new_time]];
  78
  79     [[VLCEventManager sharedManager] callOnMainThreadDelegateOfObject:self
  80                                                    withDelegateMethod:@selector(mediaPlayerTimeChanged:)
  81                                                  withNotificationName:VLCMediaPlayerTimeChanged];
  82     [pool release];
  83 }
  84
  85 static void HandleMediaPositionChanged(const libvlc_event_t * event, void * self)
  86 {
  87     NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
  88
  89     [[VLCEventManager sharedManager] callOnMainThreadObject:self
  90                                                  withMethod:@selector(mediaPlayerPositionChanged:)
  91                                        withArgumentAsObject:[NSNumber numberWithFloat:event->u.media_player_position_changed.new_position]];
  92     [pool release];
  93 }
  94
  95 static void HandleMediaInstanceStateChanged(const libvlc_event_t * event, void * self)
  96 {
  97     VLCMediaPlayerState newState;
  98
  99     if( event->type == libvlc_MediaPlayerPlaying )
 100         newState = VLCMediaPlayerStatePlaying;
 101     else if( event->type == libvlc_MediaPlayerPaused )
 102         newState = VLCMediaPlayerStatePaused;
 103     else if( event->type == libvlc_MediaPlayerEndReached )
 104         newState = VLCMediaPlayerStateStopped;
 105     else if( event->type == libvlc_MediaPlayerEncounteredError )
 106         newState = VLCMediaPlayerStateError;
 107     else
 108     {
 109         NSLog(@"%s: Unknown event", __FUNCTION__);
 110         return;
 111     }
 112
 113     NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
 114
 115     [[VLCEventManager sharedManager] callOnMainThreadObject:self
 116                                                  withMethod:@selector(mediaPlayerStateChanged:)
 117                                        withArgumentAsObject:[NSNumber numberWithInt:newState]];
 118
 119     [[VLCEventManager sharedManager] callOnMainThreadDelegateOfObject:self
 120                                                    withDelegateMethod:@selector(mediaPlayerStateChanged:)
 121                                                  withNotificationName:VLCMediaPlayerStateChanged];
 122
 123     [pool release];
 124
 125 }
 126
 127
 128 // TODO: Documentation
 129 @interface VLCMediaPlayer (Private)
 130 - (id)initWithDrawable:(id)aDrawable;
 131
 132 - (void)registerObservers;
 133 - (void)unregisterObservers;
 134 - (void)mediaPlayerTimeChanged:(NSNumber *)newTime;
 135 - (void)mediaPlayerPositionChanged:(NSNumber *)newTime;
 136 - (void)mediaPlayerStateChanged:(NSNumber *)newState;
 137 @end
 138
 139 @implementation VLCMediaPlayer
 140
 141 /* Bindings */
 142 + (NSSet *)keyPathsForValuesAffectingValueForKey:(NSString *)key
 143 {
 144     static NSDictionary * dict = nil;
 145     NSSet * superKeyPaths;
 146     if( !dict )
 147     {
 148         dict = [[NSDictionary dictionaryWithObjectsAndKeys:
 149             [NSSet setWithObject:@"state"], @"playing",
 150             [NSSet setWithObjects:@"state", @"media", nil], @"seekable",
 151             [NSSet setWithObjects:@"state", @"media", nil], @"canPause",
 152             [NSSet setWithObjects:@"state", @"media", nil], @"description",
 153             nil] retain];
 154     }
 155     if( (superKeyPaths = [super keyPathsForValuesAffectingValueForKey: key]) )
 156     {
 157         NSMutableSet * ret = [NSMutableSet setWithSet:[dict objectForKey: key]];
 158         [ret unionSet:superKeyPaths];
 159         return ret;
 160     }
 161     return [dict objectForKey: key];
 162 }
 163
 164 /* Contructor */
 165 - (id)init
 166 {
 167     return [self initWithDrawable:nil];
 168 }
 169
 170 - (id)initWithVideoView:(VLCVideoView *)aVideoView
 171 {
 172     return [self initWithDrawable: aVideoView];
 173 }
 174
 175 - (id)initWithVideoLayer:(VLCVideoLayer *)aVideoLayer
 176 {
 177     return [self initWithDrawable: aVideoLayer];
 178 }
 179
 180 - (void)release
 181 {
 182     @synchronized(self)
 183     {
 184         if([self retainCount] <= 1)
 185         {
 186             /* We must make sure we won't receive new event after an upcoming dealloc
 187              * We also may receive a -retain in some event callback that may occcur
 188              * Before libvlc_event_detach. So this can't happen in dealloc */
 189             [self unregisterObservers];
 190         }
 191         [super release];
 192     }
 193 }
 194
 195 - (void)dealloc
 196 {
 197     NSAssert(libvlc_media_player_get_state(instance, NULL) == libvlc_Stopped, @"You released the media player before ensuring that it is stopped");
 198
 199     // Always get rid of the delegate first so we can stop sending messages to it
 200     // TODO: Should we tell the delegate that we're shutting down?
 201     delegate = nil;
 202
 203     // Clear our drawable as we are going to release it, we don't
 204     // want the core to use it from this point. This won't happen as
 205     // the media player must be stopped.
 206     libvlc_media_player_set_nsobject(instance, nil, NULL);
 207
 208     libvlc_media_player_release(instance);
 209
 210     // Get rid of everything else
 211     [media release];
 212     [cachedTime release];
 213     [drawable release];
 214
 215     [super dealloc];
 216 }
 217
 218 - (void)setDelegate:(id)value
 219 {
 220     delegate = value;
 221 }
 222
 223 - (id)delegate
 224 {
 225     return delegate;
 226 }
 227
 228 - (void)setVideoView:(VLCVideoView *)aVideoView
 229 {
 230     [self setDrawable: aVideoView];
 231 }
 232
 233 - (void)setVideoLayer:(VLCVideoLayer *)aVideoLayer
 234 {
 235     [self setDrawable: aVideoLayer];
 236 }
 237
 238 - (void)setDrawable:(id)aDrawable
 239 {
 240     // Make sure that this instance has been associated with the drawing canvas.
 241     libvlc_exception_t ex;
 242     libvlc_exception_init( &ex );
 243     libvlc_media_player_set_nsobject(instance, aDrawable, &ex);
 244     catch_exception( &ex );
 245 }
 246
 247 - (id)drawable
 248 {
 249     libvlc_exception_t ex;
 250     libvlc_exception_init( &ex );
 251     id ret = libvlc_media_player_get_nsobject(instance);
 252     catch_exception( &ex );
 253     return ret;
 254 }
 255
 256 - (VLCAudio *)audio
 257 {
 258     return [[VLCLibrary sharedLibrary] audio];
 259 }
 260
 261 - (void)setVideoAspectRatio:(char *)value
 262 {
 263     libvlc_exception_t ex;
 264     libvlc_exception_init( &ex );
 265     libvlc_video_set_aspect_ratio( instance, value, &ex );
 266     catch_exception( &ex );
 267 }
 268
 269 - (char *)videoAspectRatio
 270 {
 271     libvlc_exception_t ex;
 272     libvlc_exception_init( &ex );
 273     char * result = libvlc_video_get_aspect_ratio( instance, &ex );
 274     catch_exception( &ex );
 275     return result;
 276 }
 277
 278 - (void)setVideoSubTitles:(int)value
 279 {
 280     libvlc_exception_t ex;
 281     libvlc_exception_init( &ex );
 282     libvlc_video_set_spu( instance, value, &ex );
 283     catch_exception( &ex );
 284 }
 285
 286 - (int)countOfVideoSubTitles
 287 {
 288     libvlc_exception_t ex;
 289     libvlc_exception_init( &ex );
 290     int result = libvlc_video_get_spu_count( instance, &ex );
 291     catch_exception( &ex );
 292     return result;
 293 }
 294
 295 - (int)currentVideoSubTitles
 296 {
 297     libvlc_exception_t ex;
 298     libvlc_exception_init( &ex );
 299     int result = libvlc_video_get_spu( instance, &ex );
 300     if (libvlc_exception_raised(&ex))
 301     {
 302         libvlc_exception_clear(&ex);
 303         return -1;
 304     }
 305     else
 306     {
 307         libvlc_exception_clear(&ex);
 308         return result;
 309     }
 310 }
 311
 312 - (BOOL)openVideoSubTitlesFromFile:(NSString *)path
 313 {
 314     libvlc_exception_t ex;
 315     libvlc_exception_init( &ex );
 316     BOOL result = libvlc_video_set_subtitle_file( instance, [path UTF8String], &ex );
 317     catch_exception( &ex );
 318     return result;
 319 }
 320
 321 - (void)setVideoCropGeometry:(char *)value
 322 {
 323     libvlc_exception_t ex;
 324     libvlc_exception_init( &ex );
 325     libvlc_video_set_crop_geometry( instance, value, &ex );
 326     catch_exception( &ex );
 327 }
 328
 329 - (char *)videoCropGeometry
 330 {
 331     libvlc_exception_t ex;
 332     libvlc_exception_init( &ex );
 333     char * result = libvlc_video_get_crop_geometry( instance, &ex );
 334     catch_exception( &ex );
 335     return result;
 336 }
 337
 338 - (void)setVideoTeleText:(int)value
 339 {
 340     libvlc_exception_t ex;
 341     libvlc_exception_init( &ex );
 342     libvlc_video_set_teletext( instance, value, &ex );
 343     catch_exception( &ex );
 344 }
 345
 346 - (int)videoTeleText
 347 {
 348     libvlc_exception_t ex;
 349     libvlc_exception_init( &ex );
 350     int result = libvlc_video_get_teletext( instance, &ex );
 351     catch_exception( &ex );
 352     return result;
 353 }
 354
 355 - (void)saveVideoSnapshotAt: (NSString *)path withWidth:(NSUInteger)width andHeight:(NSUInteger)height
 356 {
 357     libvlc_exception_t ex;
 358     libvlc_exception_init( &ex );
 359     libvlc_video_take_snapshot( instance, [path UTF8String], width, height, &ex );
 360     catch_exception( &ex );
 361 }
 362
 363 - (void)setDeinterlaceFilter: (NSString *)name enabled: (BOOL)enabled
 364 {
 365     libvlc_exception_t ex;
 366     libvlc_exception_init( &ex );
 367     libvlc_video_set_deinterlace( instance, (int)enabled , [name UTF8String], &ex );
 368     catch_exception( &ex );
 369 }
 370
 371 - (void)setRate:(float)value
 372 {
 373     libvlc_exception_t ex;
 374     libvlc_exception_init( &ex );
 375     libvlc_media_player_set_rate( instance, value, &ex );
 376     catch_exception( &ex );
 377 }
 378
 379 - (float)rate
 380 {
 381     libvlc_exception_t ex;
 382     libvlc_exception_init( &ex );
 383     float result = libvlc_media_player_get_rate( instance, &ex );
 384     catch_exception( &ex );
 385     return result;
 386 }
 387
 388 - (NSSize)videoSize
 389 {
 390     libvlc_exception_t ex;
 391     libvlc_exception_init( &ex );
 392     NSSize result = NSMakeSize(libvlc_video_get_height((libvlc_media_player_t *)instance, &ex),
 393                                libvlc_video_get_width((libvlc_media_player_t *)instance, &ex));
 394     catch_exception( &ex );
 395     return result;
 396 }
 397
 398 - (BOOL)hasVideoOut
 399 {
 400     libvlc_exception_t ex;
 401     libvlc_exception_init( &ex );
 402     BOOL result = libvlc_media_player_has_vout((libvlc_media_player_t *)instance, &ex);
 403     if (libvlc_exception_raised( &ex ))
 404     {
 405         libvlc_exception_clear( &ex );
 406         return NO;
 407     }
 408     else
 409         return result;
 410 }
 411
 412 - (float)framesPerSecond
 413 {
 414     libvlc_exception_t ex;
 415     libvlc_exception_init( &ex );
 416     float result = libvlc_media_player_get_fps( (libvlc_media_player_t *)instance, &ex );
 417     catch_exception( &ex );
 418     return result;
 419 }
 420
 421 - (void)setTime:(VLCTime *)value
 422 {
 423     libvlc_exception_t ex;
 424     libvlc_exception_init( &ex );
 425     // Time is managed in seconds, while duration is managed in microseconds
 426     // TODO: Redo VLCTime to provide value numberAsMilliseconds, numberAsMicroseconds, numberAsSeconds, numberAsMinutes, numberAsHours
 427     libvlc_media_player_set_time( (libvlc_media_player_t *)instance,
 428                                     (value ? [[value numberValue] longLongValue] / 1000 : 0),
 429                                     &ex );
 430     catch_exception( &ex );
 431 }
 432
 433 - (VLCTime *)time
 434 {
 435     return cachedTime;
 436 }
 437
 438 - (VLCTime *)remainingTime
 439 {
 440     double currentTime = [[cachedTime numberValue] doubleValue];
 441     double remaining = currentTime / position * (1 - position);
 442     return [VLCTime timeWithNumber:[NSNumber numberWithDouble:-remaining]];
 443 }
 444
 445 - (int)fps
 446 {
 447     libvlc_exception_t ex;
 448     libvlc_exception_init( &ex );
 449     int result = libvlc_media_player_get_fps( instance, &ex );
 450     catch_exception( &ex );
 451     return result;
 452 }
 453
 454 - (void)setChapter:(int)value;
 455 {
 456     libvlc_exception_t ex;
 457     libvlc_exception_init( &ex );
 458     libvlc_media_player_set_chapter( instance, value, &ex );
 459     catch_exception( &ex );
 460 }
 461
 462 - (int)currentChapter
 463 {
 464     libvlc_exception_t ex;
 465     libvlc_exception_init( &ex );
 466     int result = libvlc_media_player_get_chapter( instance, &ex );
 467     catch_exception( &ex );
 468     return result;
 469 }
 470
 471 - (int)countOfChapters
 472 {
 473     libvlc_exception_t ex;
 474     libvlc_exception_init( &ex );
 475     int result = libvlc_media_player_get_chapter_count( instance, &ex );
 476     catch_exception( &ex );
 477     return result;
 478 }
 479
 480 - (void)nextChapter
 481 {
 482     libvlc_exception_t ex;
 483     libvlc_exception_init( &ex );
 484     libvlc_media_player_next_chapter( instance, &ex );
 485     catch_exception( &ex );
 486 }
 487
 488 - (void)previousChapter
 489 {
 490     libvlc_exception_t ex;
 491     libvlc_exception_init( &ex );
 492     libvlc_media_player_previous_chapter( instance, &ex );
 493     catch_exception( &ex );
 494 }
 495
 496 - (void)setCurrentTitle:(int)value
 497 {
 498     libvlc_exception_t ex;
 499     libvlc_exception_init( &ex );
 500     libvlc_media_player_set_title( instance, value, &ex );
 501     catch_exception( &ex );
 502 }
 503
 504 - (int)currentTitle
 505 {
 506     libvlc_exception_t ex;
 507     libvlc_exception_init( &ex );
 508     int result = libvlc_media_player_get_title( instance, &ex );
 509     catch_exception( &ex );
 510     return result;
 511 }
 512
 513 - (int)countOfTitles
 514 {
 515     libvlc_exception_t ex;
 516     libvlc_exception_init( &ex );
 517     int result = libvlc_media_player_get_title_count( instance, &ex );
 518     catch_exception( &ex );
 519     return result;
 520 }
 521
 522 - (void)setAudioTrack:(int)value
 523 {
 524     libvlc_exception_t ex;
 525     libvlc_exception_init( &ex );
 526     libvlc_audio_set_track( instance, value, &ex );
 527     catch_exception( &ex );
 528 }
 529
 530 - (int)currentAudioTrack
 531 {
 532     libvlc_exception_t ex;
 533     libvlc_exception_init( &ex );
 534     int result = libvlc_audio_get_track( instance, &ex );
 535     catch_exception( &ex );
 536     return result;
 537 }
 538
 539 - (int)countOfAudioTracks
 540 {
 541     libvlc_exception_t ex;
 542     libvlc_exception_init( &ex );
 543     int result = libvlc_audio_get_track_count( instance, &ex );
 544     catch_exception( &ex );
 545     return result;
 546 }
 547
 548 - (void)setAudioChannel:(int)value
 549 {
 550     libvlc_exception_t ex;
 551     libvlc_exception_init( &ex );
 552     libvlc_audio_set_channel( instance, value, &ex );
 553     catch_exception( &ex );
 554 }
 555
 556 - (int)audioChannel
 557 {
 558     libvlc_exception_t ex;
 559     libvlc_exception_init( &ex );
 560     int result = libvlc_audio_get_channel( instance, &ex );
 561     catch_exception( &ex );
 562     return result;
 563 }
 564
 565 - (void)setMedia:(VLCMedia *)value
 566 {
 567     if (media != value)
 568     {
 569         if (media && [media compare:value] == NSOrderedSame)
 570             return;
 571
 572         [media release];
 573         media = [value retain];
 574
 575         libvlc_exception_t ex;
 576         libvlc_exception_init( &ex );
 577         libvlc_media_player_set_media( instance, [media libVLCMediaDescriptor], &ex );
 578         catch_exception( &ex );
 579     }
 580 }
 581
 582 - (VLCMedia *)media
 583 {
 584     return media;
 585 }
 586
 587 - (BOOL)play
 588 {
 589     libvlc_exception_t ex;
 590     libvlc_exception_init( &ex );
 591     libvlc_media_player_play( (libvlc_media_player_t *)instance, &ex );
 592     catch_exception( &ex );
 593     return YES;
 594 }
 595
 596 - (void)pause
 597 {
 598     if( [NSThread isMainThread] )
 599     {
 600         /* Hack because we create a dead lock here, when the vout is stopped
 601          * and tries to recontact us on the main thread */
 602         /* FIXME: to do this properly we need to do some locking. We may want
 603          * to move that to libvlc */
 604         [self performSelectorInBackground:@selector(pause) withObject:nil];
 605         return;
 606     }
 607
 608     // Pause the stream
 609     libvlc_exception_t ex;
 610     libvlc_exception_init( &ex );
 611     libvlc_media_player_pause( (libvlc_media_player_t *)instance, &ex );
 612
 613     // fail gracefully
 614     // in most cases, it's just EOF so let's stop
 615     if (libvlc_exception_raised(&ex))
 616         [self stop];
 617
 618     libvlc_exception_clear(&ex);
 619 }
 620
 621 - (void)stop
 622 {
 623     libvlc_exception_t ex;
 624     libvlc_exception_init( &ex );
 625     libvlc_media_player_stop((libvlc_media_player_t *)instance, &ex);
 626     catch_exception( &ex );
 627 }
 628
 629 - (void)fastForward
 630 {
 631     [self fastForwardAtRate: 2.0];
 632 }
 633
 634 - (void)fastForwardAtRate:(float)rate
 635 {
 636     [self setRate:rate];
 637 }
 638
 639 - (void)rewind
 640 {
 641     [self rewindAtRate: 2.0];
 642 }
 643
 644 - (void)rewindAtRate:(float)rate
 645 {
 646     [self setRate: -rate];
 647 }
 648
 649 - (void)jumpBackward:(NSInteger)interval
 650 {
 651     if( [self isSeekable] )
 652     {
 653         interval = interval * 1000000;
 654         [self setTime: [VLCTime timeWithInt: ([[self time] intValue] - interval)]];
 655     }
 656 }
 657
 658 - (void)jumpForward:(NSInteger)interval
 659 {
 660     if( [self isSeekable] )
 661     {
 662         interval = interval * 1000000;
 663         [self setTime: [VLCTime timeWithInt: ([[self time] intValue] + interval)]];
 664     }
 665 }
 666
 667 - (void)extraShortJumpBackward
 668 {
 669     [self jumpBackward:3];
 670 }
 671
 672 - (void)extraShortJumpForward
 673 {
 674     [self jumpForward:3];
 675 }
 676
 677 - (void)shortJumpBackward
 678 {
 679     [self jumpBackward:10];
 680 }
 681
 682 - (void)shortJumpForward
 683 {
 684     [self jumpForward:10];
 685 }
 686
 687 - (void)mediumJumpBackward
 688 {
 689     [self jumpBackward:60];
 690 }
 691
 692 - (void)mediumJumpForward
 693 {
 694     [self jumpForward:60];
 695 }
 696
 697 - (void)longJumpBackward
 698 {
 699     [self jumpBackward:300];
 700 }
 701
 702 - (void)longJumpForward
 703 {
 704     [self jumpForward:300];
 705 }
 706
 707 + (NSSet *)keyPathsForValuesAffectingIsPlaying
 708 {
 709     return [NSSet setWithObjects:@"state", nil];
 710 }
 711
 712 - (BOOL)isPlaying
 713 {
 714     VLCMediaPlayerState state = [self state];
 715     return ((state == VLCMediaPlayerStateOpening) || (state == VLCMediaPlayerStateBuffering) ||
 716             (state == VLCMediaPlayerStatePlaying));
 717 }
 718
 719 - (BOOL)willPlay
 720 {
 721     libvlc_exception_t ex;
 722     libvlc_exception_init( &ex );
 723     BOOL ret = libvlc_media_player_will_play( (libvlc_media_player_t *)instance, &ex );
 724     if (libvlc_exception_raised(&ex))
 725     {
 726         libvlc_exception_clear(&ex);
 727         return NO;
 728     }
 729     else
 730         return ret;
 731 }
 732
 733 static const VLCMediaPlayerState libvlc_to_local_state[] =
 734 {
 735     [libvlc_Stopped]    = VLCMediaPlayerStateStopped,
 736     [libvlc_Opening]    = VLCMediaPlayerStateOpening,
 737     [libvlc_Buffering]  = VLCMediaPlayerStateBuffering,
 738     [libvlc_Playing]    = VLCMediaPlayerStatePlaying,
 739     [libvlc_Paused]     = VLCMediaPlayerStatePaused,
 740     [libvlc_Ended]      = VLCMediaPlayerStateEnded,
 741     [libvlc_Error]      = VLCMediaPlayerStateError
 742 };
 743
 744 - (VLCMediaPlayerState)state
 745 {
 746     return cachedState;
 747 }
 748
 749 - (float)position
 750 {
 751     return position;
 752 }
 753
 754 - (void)setPosition:(float)newPosition
 755 {
 756     libvlc_exception_t ex;
 757     libvlc_exception_init( &ex );
 758     libvlc_media_player_set_position( instance, newPosition, &ex );
 759     catch_exception( &ex );
 760 }
 761
 762 - (BOOL)isSeekable
 763 {
 764     libvlc_exception_t ex;
 765     libvlc_exception_init( &ex );
 766     BOOL ret = libvlc_media_player_is_seekable( instance, &ex );
 767     catch_exception( &ex );
 768     return ret;
 769 }
 770
 771 - (BOOL)canPause
 772 {
 773     libvlc_exception_t ex;
 774     libvlc_exception_init( &ex );
 775     BOOL ret = libvlc_media_player_can_pause( instance, &ex );
 776     catch_exception( &ex );
 777     return ret;
 778 }
 779
 780 - (void *)libVLCMediaPlayer
 781 {
 782     return instance;
 783 }
 784 @end
 785
 786 @implementation VLCMediaPlayer (Private)
 787 - (id)initWithDrawable:(id)aDrawable
 788 {
 789     if (self = [super init])
 790     {
 791         delegate = nil;
 792         media = nil;
 793         cachedTime = [[VLCTime nullTime] retain];
 794         position = 0.0f;
 795         cachedState = VLCMediaPlayerStateStopped;
 796
 797         // Create a media instance, it doesn't matter what library we start off with
 798         // it will change depending on the media descriptor provided to the media
 799         // instance
 800         libvlc_exception_t ex;
 801         libvlc_exception_init( &ex );
 802         instance = (void *)libvlc_media_player_new([VLCLibrary sharedInstance], &ex);
 803         catch_exception( &ex );
 804
 805         [self registerObservers];
 806
 807         [self setDrawable:aDrawable];
 808     }
 809     return self;
 810 }
 811
 812 - (void)registerObservers
 813 {
 814     libvlc_exception_t ex;
 815     libvlc_exception_init( &ex );
 816
 817     // Attach event observers into the media instance
 818     libvlc_event_manager_t * p_em = libvlc_media_player_event_manager( instance, &ex );
 819     libvlc_event_attach( p_em, libvlc_MediaPlayerPlaying,          HandleMediaInstanceStateChanged, self, &ex );
 820     libvlc_event_attach( p_em, libvlc_MediaPlayerPaused,           HandleMediaInstanceStateChanged, self, &ex );
 821     libvlc_event_attach( p_em, libvlc_MediaPlayerEncounteredError, HandleMediaInstanceStateChanged, self, &ex );
 822     libvlc_event_attach( p_em, libvlc_MediaPlayerEndReached,       HandleMediaInstanceStateChanged, self, &ex );
 823     /* FIXME: We may want to turn that off when none is interested by that */
 824     libvlc_event_attach( p_em, libvlc_MediaPlayerPositionChanged, HandleMediaPositionChanged,      self, &ex );
 825     libvlc_event_attach( p_em, libvlc_MediaPlayerTimeChanged,     HandleMediaTimeChanged,          self, &ex );
 826     catch_exception( &ex );
 827 }
 828
 829 - (void)unregisterObservers
 830 {
 831     libvlc_event_manager_t * p_em = libvlc_media_player_event_manager( instance, NULL );
 832     libvlc_event_detach( p_em, libvlc_MediaPlayerPlaying,          HandleMediaInstanceStateChanged, self, NULL );
 833     libvlc_event_detach( p_em, libvlc_MediaPlayerPaused,           HandleMediaInstanceStateChanged, self, NULL );
 834     libvlc_event_detach( p_em, libvlc_MediaPlayerEncounteredError, HandleMediaInstanceStateChanged, self, NULL );
 835     libvlc_event_detach( p_em, libvlc_MediaPlayerEndReached,       HandleMediaInstanceStateChanged, self, NULL );
 836     libvlc_event_detach( p_em, libvlc_MediaPlayerPositionChanged,  HandleMediaPositionChanged,      self, NULL );
 837     libvlc_event_detach( p_em, libvlc_MediaPlayerTimeChanged,      HandleMediaTimeChanged,          self, NULL );
 838 }
 839
 840 - (void)mediaPlayerTimeChanged:(NSNumber *)newTime
 841 {
 842     [self willChangeValueForKey:@"time"];
 843     [self willChangeValueForKey:@"remainingTime"];
 844     [cachedTime release];
 845     cachedTime = [[VLCTime timeWithNumber:newTime] retain];
 846
 847     [self didChangeValueForKey:@"remainingTime"];
 848     [self didChangeValueForKey:@"time"];
 849 }
 850
 851 - (void)delaySleep
 852 {
 853     UpdateSystemActivity(UsrActivity);
 854 }
 855
 856 - (void)mediaPlayerPositionChanged:(NSNumber *)newPosition
 857 {
 858     // This seems to be the most relevant place to delay sleeping and screen saver.
 859     [self delaySleep];
 860
 861     [self willChangeValueForKey:@"position"];
 862     position = [newPosition floatValue];
 863     [self didChangeValueForKey:@"position"];
 864 }
 865
 866 - (void)mediaPlayerStateChanged:(NSNumber *)newState
 867 {
 868     [self willChangeValueForKey:@"state"];
 869     cachedState = [newState intValue];
 870     [self didChangeValueForKey:@"state"];
 871 }
 872
 873 @end