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)videoSubTitles
 287 {
 288     libvlc_exception_t ex;
 289     libvlc_exception_init( &ex );
 290     int result = libvlc_video_get_spu( instance, &ex );
 291     catch_exception( &ex );
 292     return result;
 293 }
 294
 295 - (void)setVideoCropGeometry:(char *)value
 296 {
 297     libvlc_exception_t ex;
 298     libvlc_exception_init( &ex );
 299     libvlc_video_set_crop_geometry( instance, value, &ex );
 300     catch_exception( &ex );
 301 }
 302
 303 - (char *)videoCropGeometry
 304 {
 305     libvlc_exception_t ex;
 306     libvlc_exception_init( &ex );
 307     char * result = libvlc_video_get_crop_geometry( instance, &ex );
 308     catch_exception( &ex );
 309     return result;
 310 }
 311
 312 - (void)setVideoTeleText:(int)value
 313 {
 314     libvlc_exception_t ex;
 315     libvlc_exception_init( &ex );
 316     libvlc_video_set_teletext( instance, value, &ex );
 317     catch_exception( &ex );
 318 }
 319
 320 - (int)videoTeleText
 321 {
 322     libvlc_exception_t ex;
 323     libvlc_exception_init( &ex );
 324     int result = libvlc_video_get_teletext( instance, &ex );
 325     catch_exception( &ex );
 326     return result;
 327 }
 328
 329 - (void)saveVideoSnapshotAt: (NSString *)path withWidth:(NSUInteger)width andHeight:(NSUInteger)height
 330 {
 331     libvlc_exception_t ex;
 332     libvlc_exception_init( &ex );
 333     libvlc_video_take_snapshot( instance, [path UTF8String], width, height, &ex );
 334     catch_exception( &ex );
 335 }
 336
 337 - (void)setDeinterlaceFilter: (NSString *)name enabled: (BOOL)enabled
 338 {
 339     libvlc_exception_t ex;
 340     libvlc_exception_init( &ex );
 341     libvlc_video_set_deinterlace( instance, (int)enabled , [name UTF8String], &ex );
 342     catch_exception( &ex );
 343 }
 344
 345 - (void)setRate:(float)value
 346 {
 347     libvlc_exception_t ex;
 348     libvlc_exception_init( &ex );
 349     libvlc_media_player_set_rate( instance, value, &ex );
 350     catch_exception( &ex );
 351 }
 352
 353 - (float)rate
 354 {
 355     libvlc_exception_t ex;
 356     libvlc_exception_init( &ex );
 357     float result = libvlc_media_player_get_rate( instance, &ex );
 358     catch_exception( &ex );
 359     return result;
 360 }
 361
 362 - (NSSize)videoSize
 363 {
 364     libvlc_exception_t ex;
 365     libvlc_exception_init( &ex );
 366     NSSize result = NSMakeSize(libvlc_video_get_height((libvlc_media_player_t *)instance, &ex),
 367                                libvlc_video_get_width((libvlc_media_player_t *)instance, &ex));
 368     catch_exception( &ex );
 369     return result;
 370 }
 371
 372 - (BOOL)hasVideoOut
 373 {
 374     libvlc_exception_t ex;
 375     libvlc_exception_init( &ex );
 376     BOOL result = libvlc_media_player_has_vout((libvlc_media_player_t *)instance, &ex);
 377     if (libvlc_exception_raised( &ex ))
 378     {
 379         libvlc_exception_clear( &ex );
 380         return NO;
 381     }
 382     else
 383         return result;
 384 }
 385
 386 - (float)framesPerSecond
 387 {
 388     libvlc_exception_t ex;
 389     libvlc_exception_init( &ex );
 390     float result = libvlc_media_player_get_fps( (libvlc_media_player_t *)instance, &ex );
 391     catch_exception( &ex );
 392     return result;
 393 }
 394
 395 - (void)setTime:(VLCTime *)value
 396 {
 397     libvlc_exception_t ex;
 398     libvlc_exception_init( &ex );
 399     // Time is managed in seconds, while duration is managed in microseconds
 400     // TODO: Redo VLCTime to provide value numberAsMilliseconds, numberAsMicroseconds, numberAsSeconds, numberAsMinutes, numberAsHours
 401     libvlc_media_player_set_time( (libvlc_media_player_t *)instance,
 402                                     (value ? [[value numberValue] longLongValue] / 1000 : 0),
 403                                     &ex );
 404     catch_exception( &ex );
 405 }
 406
 407 - (VLCTime *)time
 408 {
 409     return cachedTime;
 410 }
 411
 412 - (VLCTime *)remainingTime
 413 {
 414     double currentTime = [[cachedTime numberValue] doubleValue];
 415     double remaining = currentTime / position * (1 - position);
 416     return [VLCTime timeWithNumber:[NSNumber numberWithDouble:-remaining]];
 417 }
 418
 419 - (int)fps
 420 {
 421     libvlc_exception_t ex;
 422     libvlc_exception_init( &ex );
 423     int result = libvlc_media_player_get_fps( instance, &ex );
 424     catch_exception( &ex );
 425     return result;
 426 }
 427
 428 - (void)setChapter:(int)value;
 429 {
 430     libvlc_exception_t ex;
 431     libvlc_exception_init( &ex );
 432     libvlc_media_player_set_chapter( instance, value, &ex );
 433     catch_exception( &ex );
 434 }
 435
 436 - (int)chapter
 437 {
 438     libvlc_exception_t ex;
 439     libvlc_exception_init( &ex );
 440     int result = libvlc_media_player_get_chapter( instance, &ex );
 441     catch_exception( &ex );
 442     return result;
 443 }
 444
 445 - (int)countOfChapters
 446 {
 447     libvlc_exception_t ex;
 448     libvlc_exception_init( &ex );
 449     int result = libvlc_media_player_get_chapter_count( instance, &ex );
 450     catch_exception( &ex );
 451     return result;
 452 }
 453
 454 - (void)nextChapter
 455 {
 456     libvlc_exception_t ex;
 457     libvlc_exception_init( &ex );
 458     libvlc_media_player_next_chapter( instance, &ex );
 459     catch_exception( &ex );
 460 }
 461
 462 - (void)previousChapter
 463 {
 464     libvlc_exception_t ex;
 465     libvlc_exception_init( &ex );
 466     libvlc_media_player_previous_chapter( instance, &ex );
 467     catch_exception( &ex );
 468 }
 469
 470 - (void)setTitle:(int)value
 471 {
 472     libvlc_exception_t ex;
 473     libvlc_exception_init( &ex );
 474     libvlc_media_player_set_title( instance, value, &ex );
 475     catch_exception( &ex );
 476 }
 477
 478 - (int)title
 479 {
 480     libvlc_exception_t ex;
 481     libvlc_exception_init( &ex );
 482     int result = libvlc_media_player_get_title( instance, &ex );
 483     catch_exception( &ex );
 484     return result;
 485 }
 486
 487 - (int)countOfTitles
 488 {
 489     libvlc_exception_t ex;
 490     libvlc_exception_init( &ex );
 491     int result = libvlc_media_player_get_title_count( instance, &ex );
 492     catch_exception( &ex );
 493     return result;
 494 }
 495
 496 - (void)setAudioTrack:(int)value
 497 {
 498     libvlc_exception_t ex;
 499     libvlc_exception_init( &ex );
 500     libvlc_audio_set_track( instance, value, &ex );
 501     catch_exception( &ex );
 502 }
 503
 504 - (int)audioTrack
 505 {
 506     libvlc_exception_t ex;
 507     libvlc_exception_init( &ex );
 508     int result = libvlc_audio_get_track( instance, &ex );
 509     catch_exception( &ex );
 510     return result;
 511 }
 512
 513 - (int)countOfAudioTracks
 514 {
 515     libvlc_exception_t ex;
 516     libvlc_exception_init( &ex );
 517     int result = libvlc_audio_get_track_count( instance, &ex );
 518     catch_exception( &ex );
 519     return result;
 520 }
 521
 522 - (void)setAudioChannel:(int)value
 523 {
 524     libvlc_exception_t ex;
 525     libvlc_exception_init( &ex );
 526     libvlc_audio_set_channel( instance, value, &ex );
 527     catch_exception( &ex );
 528 }
 529
 530 - (int)audioChannel
 531 {
 532     libvlc_exception_t ex;
 533     libvlc_exception_init( &ex );
 534     int result = libvlc_audio_get_channel( instance, &ex );
 535     catch_exception( &ex );
 536     return result;
 537 }
 538
 539 - (void)setMedia:(VLCMedia *)value
 540 {
 541     if (media != value)
 542     {
 543         if (media && [media compare:value] == NSOrderedSame)
 544             return;
 545
 546         [media release];
 547         media = [value retain];
 548
 549         libvlc_exception_t ex;
 550         libvlc_exception_init( &ex );
 551         libvlc_media_player_set_media( instance, [media libVLCMediaDescriptor], &ex );
 552         catch_exception( &ex );
 553     }
 554 }
 555
 556 - (VLCMedia *)media
 557 {
 558     return media;
 559 }
 560
 561 - (BOOL)play
 562 {
 563     libvlc_exception_t ex;
 564     libvlc_exception_init( &ex );
 565     libvlc_media_player_play( (libvlc_media_player_t *)instance, &ex );
 566     catch_exception( &ex );
 567     return YES;
 568 }
 569
 570 - (void)pause
 571 {
 572     if( [NSThread isMainThread] )
 573     {
 574         /* Hack because we create a dead lock here, when the vout is stopped
 575          * and tries to recontact us on the main thread */
 576         /* FIXME: to do this properly we need to do some locking. We may want
 577          * to move that to libvlc */
 578         [self performSelectorInBackground:@selector(pause) withObject:nil];
 579         return;
 580     }
 581
 582     // Pause the stream
 583     libvlc_exception_t ex;
 584     libvlc_exception_init( &ex );
 585     libvlc_media_player_pause( (libvlc_media_player_t *)instance, &ex );
 586     catch_exception( &ex );
 587 }
 588
 589 - (void)stop
 590 {
 591     libvlc_exception_t ex;
 592     libvlc_exception_init( &ex );
 593     libvlc_media_player_stop((libvlc_media_player_t *)instance, &ex);
 594     catch_exception( &ex );
 595 }
 596
 597 - (void)fastForward
 598 {
 599     [self fastForwardAtRate: 2.0];
 600 }
 601
 602 - (void)fastForwardAtRate:(float)rate
 603 {
 604     [self setRate:rate];
 605 }
 606
 607 - (void)rewind
 608 {
 609     [self rewindAtRate: 2.0];
 610 }
 611
 612 - (void)rewindAtRate:(float)rate
 613 {
 614     [self setRate: -rate];
 615 }
 616
 617 - (void)jumpBackward:(NSInteger)interval
 618 {
 619     if( [self isSeekable] )
 620     {
 621         interval = interval * 1000000;
 622         [self setTime: [VLCTime timeWithInt: ([[self time] intValue] - interval)]];
 623     }
 624 }
 625
 626 - (void)jumpForward:(NSInteger)interval
 627 {
 628     if( [self isSeekable] )
 629     {
 630         interval = interval * 1000000;
 631         [self setTime: [VLCTime timeWithInt: ([[self time] intValue] + interval)]];
 632     }
 633 }
 634
 635 - (void)extraShortJumpBackward
 636 {
 637     [self jumpBackward:3];
 638 }
 639
 640 - (void)extraShortJumpForward
 641 {
 642     [self jumpForward:3];
 643 }
 644
 645 - (void)shortJumpBackward
 646 {
 647     [self jumpBackward:10];
 648 }
 649
 650 - (void)shortJumpForward
 651 {
 652     [self jumpForward:10];
 653 }
 654
 655 - (void)mediumJumpBackward
 656 {
 657     [self jumpBackward:60];
 658 }
 659
 660 - (void)mediumJumpForward
 661 {
 662     [self jumpForward:60];
 663 }
 664
 665 - (void)longJumpBackward
 666 {
 667     [self jumpBackward:300];
 668 }
 669
 670 - (void)longJumpForward
 671 {
 672     [self jumpForward:300];
 673 }
 674
 675 + (NSSet *)keyPathsForValuesAffectingIsPlaying
 676 {
 677     return [NSSet setWithObjects:@"state", nil];
 678 }
 679
 680 - (BOOL)isPlaying
 681 {
 682     VLCMediaPlayerState state = [self state];
 683     return ((state == VLCMediaPlayerStateOpening) || (state == VLCMediaPlayerStateBuffering) ||
 684             (state == VLCMediaPlayerStatePlaying));
 685 }
 686
 687 - (BOOL)willPlay
 688 {
 689     libvlc_exception_t ex;
 690     libvlc_exception_init( &ex );
 691     BOOL ret = libvlc_media_player_will_play( (libvlc_media_player_t *)instance, &ex );
 692     if (libvlc_exception_raised(&ex))
 693     {
 694         libvlc_exception_clear(&ex);
 695         return NO;
 696     }
 697     else
 698         return ret;
 699 }
 700
 701 static const VLCMediaPlayerState libvlc_to_local_state[] =
 702 {
 703     [libvlc_Stopped]    = VLCMediaPlayerStateStopped,
 704     [libvlc_Opening]    = VLCMediaPlayerStateOpening,
 705     [libvlc_Buffering]  = VLCMediaPlayerStateBuffering,
 706     [libvlc_Playing]    = VLCMediaPlayerStatePlaying,
 707     [libvlc_Paused]     = VLCMediaPlayerStatePaused,
 708     [libvlc_Ended]      = VLCMediaPlayerStateEnded,
 709     [libvlc_Error]      = VLCMediaPlayerStateError
 710 };
 711
 712 - (VLCMediaPlayerState)state
 713 {
 714     return cachedState;
 715 }
 716
 717 - (float)position
 718 {
 719     return position;
 720 }
 721
 722 - (void)setPosition:(float)newPosition
 723 {
 724     libvlc_exception_t ex;
 725     libvlc_exception_init( &ex );
 726     libvlc_media_player_set_position( instance, newPosition, &ex );
 727     catch_exception( &ex );
 728 }
 729
 730 - (BOOL)isSeekable
 731 {
 732     libvlc_exception_t ex;
 733     libvlc_exception_init( &ex );
 734     BOOL ret = libvlc_media_player_is_seekable( instance, &ex );
 735     catch_exception( &ex );
 736     return ret;
 737 }
 738
 739 - (BOOL)canPause
 740 {
 741     libvlc_exception_t ex;
 742     libvlc_exception_init( &ex );
 743     BOOL ret = libvlc_media_player_can_pause( instance, &ex );
 744     catch_exception( &ex );
 745     return ret;
 746 }
 747
 748 - (void *)libVLCMediaPlayer
 749 {
 750     return instance;
 751 }
 752 @end
 753
 754 @implementation VLCMediaPlayer (Private)
 755 - (id)initWithDrawable:(id)aDrawable
 756 {
 757     if (self = [super init])
 758     {
 759         delegate = nil;
 760         media = nil;
 761         cachedTime = [[VLCTime nullTime] retain];
 762         position = 0.0f;
 763         cachedState = VLCMediaPlayerStateStopped;
 764
 765         // Create a media instance, it doesn't matter what library we start off with
 766         // it will change depending on the media descriptor provided to the media
 767         // instance
 768         libvlc_exception_t ex;
 769         libvlc_exception_init( &ex );
 770         instance = (void *)libvlc_media_player_new([VLCLibrary sharedInstance], &ex);
 771         catch_exception( &ex );
 772
 773         [self registerObservers];
 774
 775         [self setDrawable:aDrawable];
 776     }
 777     return self;
 778 }
 779
 780 - (void)registerObservers
 781 {
 782     libvlc_exception_t ex;
 783     libvlc_exception_init( &ex );
 784
 785     // Attach event observers into the media instance
 786     libvlc_event_manager_t * p_em = libvlc_media_player_event_manager( instance, &ex );
 787     libvlc_event_attach( p_em, libvlc_MediaPlayerPlaying,          HandleMediaInstanceStateChanged, self, &ex );
 788     libvlc_event_attach( p_em, libvlc_MediaPlayerPaused,           HandleMediaInstanceStateChanged, self, &ex );
 789     libvlc_event_attach( p_em, libvlc_MediaPlayerEncounteredError, HandleMediaInstanceStateChanged, self, &ex );
 790     libvlc_event_attach( p_em, libvlc_MediaPlayerEndReached,       HandleMediaInstanceStateChanged, self, &ex );
 791     /* FIXME: We may want to turn that off when none is interested by that */
 792     libvlc_event_attach( p_em, libvlc_MediaPlayerPositionChanged, HandleMediaPositionChanged,      self, &ex );
 793     libvlc_event_attach( p_em, libvlc_MediaPlayerTimeChanged,     HandleMediaTimeChanged,          self, &ex );
 794     catch_exception( &ex );
 795 }
 796
 797 - (void)unregisterObservers
 798 {
 799     libvlc_event_manager_t * p_em = libvlc_media_player_event_manager( instance, NULL );
 800     libvlc_event_detach( p_em, libvlc_MediaPlayerPlaying,          HandleMediaInstanceStateChanged, self, NULL );
 801     libvlc_event_detach( p_em, libvlc_MediaPlayerPaused,           HandleMediaInstanceStateChanged, self, NULL );
 802     libvlc_event_detach( p_em, libvlc_MediaPlayerEncounteredError, HandleMediaInstanceStateChanged, self, NULL );
 803     libvlc_event_detach( p_em, libvlc_MediaPlayerEndReached,       HandleMediaInstanceStateChanged, self, NULL );
 804     libvlc_event_detach( p_em, libvlc_MediaPlayerPositionChanged,  HandleMediaPositionChanged,      self, NULL );
 805     libvlc_event_detach( p_em, libvlc_MediaPlayerTimeChanged,      HandleMediaTimeChanged,          self, NULL );
 806 }
 807
 808 - (void)mediaPlayerTimeChanged:(NSNumber *)newTime
 809 {
 810     [self willChangeValueForKey:@"time"];
 811     [self willChangeValueForKey:@"remainingTime"];
 812     [cachedTime release];
 813     cachedTime = [[VLCTime timeWithNumber:newTime] retain];
 814
 815     [self didChangeValueForKey:@"remainingTime"];
 816     [self didChangeValueForKey:@"time"];
 817 }
 818
 819 - (void)delaySleep
 820 {
 821     UpdateSystemActivity(UsrActivity);
 822 }
 823
 824 - (void)mediaPlayerPositionChanged:(NSNumber *)newPosition
 825 {
 826     // This seems to be the most relevant place to delay sleeping and screen saver.
 827     [self delaySleep];
 828
 829     [self willChangeValueForKey:@"position"];
 830     position = [newPosition floatValue];
 831     [self didChangeValueForKey:@"position"];
 832 }
 833
 834 - (void)mediaPlayerStateChanged:(NSNumber *)newState
 835 {
 836     [self willChangeValueForKey:@"state"];
 837     cachedState = [newState intValue];
 838     [self didChangeValueForKey:@"state"];
 839 }
 840
 841 @end