VLCMediaList.m 11 KB

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  1. /*****************************************************************************
  2. * VLCMediaList.m: VLCKit.framework VLCMediaList implementation
  3. *****************************************************************************
  4. * Copyright (C) 2007 Pierre d'Herbemont
  5. * Copyright (C) 2007 the VideoLAN team
  6. * $Id$
  7. *
  8. * Authors: Pierre d'Herbemont <pdherbemont # videolan.org>
  9. *
  10. * This program is free software; you can redistribute it and/or modify
  11. * it under the terms of the GNU General Public License as published by
  12. * the Free Software Foundation; either version 2 of the License, or
  13. * (at your option) any later version.
  14. *
  15. * This program is distributed in the hope that it will be useful,
  16. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. * GNU General Public License for more details.
  19. *
  20. * You should have received a copy of the GNU General Public License
  21. * along with this program; if not, write to the Free Software
  22. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23. *****************************************************************************/
  24. #import "VLCMediaList.h"
  25. #import "VLCLibrary.h"
  26. #import "VLCEventManager.h"
  27. #import "VLCLibVLCBridging.h"
  28. #ifdef HAVE_CONFIG_H
  29. # include "config.h"
  30. #endif
  31. #include <vlc/vlc.h>
  32. #include <vlc/libvlc.h>
  33. /* Notification Messages */
  34. NSString * VLCMediaListItemAdded = @"VLCMediaListItemAdded";
  35. NSString * VLCMediaListItemDeleted = @"VLCMediaListItemDeleted";
  36. // TODO: Documentation
  37. @interface VLCMediaList (Private)
  38. /* Initializers */
  39. - (void)initInternalMediaList;
  40. /* Libvlc event bridges */
  41. - (void)mediaListItemAdded:(NSArray *)args;
  42. - (void)mediaListItemRemoved:(NSNumber *)index;
  43. @end
  44. /* libvlc event callback */
  45. static void HandleMediaListItemAdded(const libvlc_event_t * event, void * user_data)
  46. {
  47. NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
  48. id self = user_data;
  49. [[VLCEventManager sharedManager] callOnMainThreadObject:self
  50. withMethod:@selector(mediaListItemAdded:)
  51. withArgumentAsObject:[NSArray arrayWithObject:[NSDictionary dictionaryWithObjectsAndKeys:
  52. [VLCMedia mediaWithLibVLCMediaDescriptor:event->u.media_list_item_added.item], @"media",
  53. [NSNumber numberWithInt:event->u.media_list_item_added.index], @"index",
  54. nil]]];
  55. [pool release];
  56. }
  57. static void HandleMediaListItemDeleted( const libvlc_event_t * event, void * user_data)
  58. {
  59. NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
  60. id self = user_data;
  61. [[VLCEventManager sharedManager] callOnMainThreadObject:self
  62. withMethod:@selector(mediaListItemRemoved:)
  63. withArgumentAsObject:[NSNumber numberWithInt:event->u.media_list_item_deleted.index]];
  64. [pool release];
  65. }
  66. @implementation VLCMediaList
  67. - (id)init
  68. {
  69. if (self = [super init])
  70. {
  71. // Create a new libvlc media list instance
  72. p_mlist = libvlc_media_list_new([VLCLibrary sharedInstance]);
  73. // Initialize internals to defaults
  74. cachedMedia = [[NSMutableArray alloc] init];
  75. delegate = flatAspect = hierarchicalAspect = hierarchicalNodeAspect = nil;
  76. [self initInternalMediaList];
  77. }
  78. return self;
  79. }
  80. - (void)release
  81. {
  82. @synchronized(self)
  83. {
  84. if([self retainCount] <= 1)
  85. {
  86. /* We must make sure we won't receive new event after an upcoming dealloc
  87. * We also may receive a -retain in some event callback that may occcur
  88. * Before libvlc_event_detach. So this can't happen in dealloc */
  89. libvlc_event_manager_t * p_em = libvlc_media_list_event_manager(p_mlist);
  90. libvlc_event_detach(p_em, libvlc_MediaListItemDeleted, HandleMediaListItemDeleted, self);
  91. libvlc_event_detach(p_em, libvlc_MediaListItemAdded, HandleMediaListItemAdded, self);
  92. }
  93. [super release];
  94. }
  95. }
  96. - (void)dealloc
  97. {
  98. // Release allocated memory
  99. delegate = nil;
  100. libvlc_media_list_release( p_mlist );
  101. [cachedMedia release];
  102. [flatAspect release];
  103. [hierarchicalAspect release];
  104. [hierarchicalNodeAspect release];
  105. [super dealloc];
  106. }
  107. - (NSString *)description
  108. {
  109. NSMutableString * content = [NSMutableString string];
  110. int i;
  111. for( i = 0; i < [self count]; i++)
  112. {
  113. [content appendFormat:@"%@\n", [self mediaAtIndex: i]];
  114. }
  115. return [NSString stringWithFormat:@"<%@ %p> {\n%@}", [self className], self, content];
  116. }
  117. - (void)lock
  118. {
  119. libvlc_media_list_lock( p_mlist );
  120. }
  121. - (void)unlock
  122. {
  123. libvlc_media_list_unlock( p_mlist );
  124. }
  125. - (NSInteger)addMedia:(VLCMedia *)media
  126. {
  127. int index = [self count];
  128. [self insertMedia:media atIndex:index];
  129. return index;
  130. }
  131. - (void)insertMedia:(VLCMedia *)media atIndex: (NSInteger)index
  132. {
  133. [media retain];
  134. // Add it to the libvlc's medialist
  135. libvlc_exception_t p_e;
  136. libvlc_exception_init( &p_e );
  137. libvlc_media_list_insert_media( p_mlist, [media libVLCMediaDescriptor], index, &p_e );
  138. catch_exception( &p_e );
  139. }
  140. - (void)removeMediaAtIndex:(NSInteger)index
  141. {
  142. [[self mediaAtIndex:index] release];
  143. // Remove it from the libvlc's medialist
  144. libvlc_exception_t p_e;
  145. libvlc_exception_init( &p_e );
  146. libvlc_media_list_remove_index( p_mlist, index, &p_e );
  147. catch_exception( &p_e );
  148. }
  149. - (VLCMedia *)mediaAtIndex:(NSInteger)index
  150. {
  151. return [cachedMedia objectAtIndex:index];
  152. }
  153. - (NSInteger)indexOfMedia:(VLCMedia *)media
  154. {
  155. NSInteger result = libvlc_media_list_index_of_item(p_mlist, [media libVLCMediaDescriptor]);
  156. return result;
  157. }
  158. /* KVC Compliance: For the @"media" key */
  159. - (NSInteger)countOfMedia
  160. {
  161. return [self count];
  162. }
  163. - (id)objectInMediaAtIndex:(NSUInteger)i
  164. {
  165. return [self mediaAtIndex:i];
  166. }
  167. - (NSInteger)count
  168. {
  169. return [cachedMedia count];
  170. }
  171. - (void)insertObject:(id)object inMediaAtIndex:(NSUInteger)i
  172. {
  173. [self insertMedia:object atIndex:i];
  174. }
  175. - (void)removeObjectFromMediaAtIndex:(NSUInteger)i
  176. {
  177. [self removeMediaAtIndex:i];
  178. }
  179. @synthesize delegate;
  180. - (BOOL)isReadOnly
  181. {
  182. return libvlc_media_list_is_readonly( p_mlist );
  183. }
  184. /* Media list aspect */
  185. - (VLCMediaListAspect *)hierarchicalAspect
  186. {
  187. if( hierarchicalAspect )
  188. return hierarchicalAspect;
  189. libvlc_media_list_view_t * p_mlv = libvlc_media_list_hierarchical_view(p_mlist);
  190. hierarchicalAspect = [[VLCMediaListAspect mediaListAspectWithLibVLCMediaListView:p_mlv andMediaList:self] retain];
  191. libvlc_media_list_view_release( p_mlv );
  192. return hierarchicalAspect;
  193. }
  194. - (VLCMediaListAspect *)hierarchicalNodeAspect
  195. {
  196. if( hierarchicalNodeAspect )
  197. return hierarchicalNodeAspect;
  198. libvlc_media_list_view_t * p_mlv = libvlc_media_list_hierarchical_node_view(p_mlist);
  199. hierarchicalNodeAspect = [[VLCMediaListAspect mediaListAspectWithLibVLCMediaListView:p_mlv andMediaList:self] retain];
  200. libvlc_media_list_view_release( p_mlv );
  201. return hierarchicalNodeAspect;
  202. }
  203. - (VLCMediaListAspect *)flatAspect
  204. {
  205. if( flatAspect )
  206. return flatAspect;
  207. libvlc_media_list_view_t * p_mlv = libvlc_media_list_flat_view(p_mlist, NULL);
  208. flatAspect = [[VLCMediaListAspect mediaListAspectWithLibVLCMediaListView:p_mlv andMediaList:self] retain];
  209. libvlc_media_list_view_release( p_mlv );
  210. return flatAspect;
  211. }
  212. @end
  213. @implementation VLCMediaList (LibVLCBridging)
  214. + (id)mediaListWithLibVLCMediaList:(void *)p_new_mlist;
  215. {
  216. return [[[VLCMediaList alloc] initWithLibVLCMediaList:p_new_mlist] autorelease];
  217. }
  218. - (id)initWithLibVLCMediaList:(void *)p_new_mlist;
  219. {
  220. if( self = [super init] )
  221. {
  222. p_mlist = p_new_mlist;
  223. libvlc_media_list_retain( p_mlist );
  224. libvlc_media_list_lock( p_mlist );
  225. cachedMedia = [[NSMutableArray alloc] initWithCapacity:libvlc_media_list_count(p_mlist)];
  226. NSUInteger i, count = libvlc_media_list_count(p_mlist);
  227. for( i = 0; i < count; i++ )
  228. {
  229. libvlc_media_t * p_md = libvlc_media_list_item_at_index( p_mlist, i, NULL );
  230. [cachedMedia addObject:[VLCMedia mediaWithLibVLCMediaDescriptor:p_md]];
  231. libvlc_media_release(p_md);
  232. }
  233. [self initInternalMediaList];
  234. libvlc_media_list_unlock(p_mlist);
  235. }
  236. return self;
  237. }
  238. - (void *)libVLCMediaList
  239. {
  240. return p_mlist;
  241. }
  242. @end
  243. @implementation VLCMediaList (Private)
  244. - (void)initInternalMediaList
  245. {
  246. // Add event callbacks
  247. libvlc_event_manager_t * p_em = libvlc_media_list_event_manager(p_mlist);
  248. libvlc_event_attach( p_em, libvlc_MediaListItemAdded, HandleMediaListItemAdded, self);
  249. libvlc_event_attach( p_em, libvlc_MediaListItemDeleted, HandleMediaListItemDeleted, self);
  250. }
  251. - (void)mediaListItemAdded:(NSArray *)arrayOfArgs
  252. {
  253. /* We hope to receive index in a nide range, that could change one day */
  254. NSInteger start = [[[arrayOfArgs objectAtIndex: 0] objectForKey:@"index"] intValue];
  255. NSInteger end = [[[arrayOfArgs objectAtIndex: [arrayOfArgs count]-1] objectForKey:@"index"] intValue];
  256. NSRange range = NSMakeRange(start, end-start);
  257. [self willChange:NSKeyValueChangeInsertion valuesAtIndexes:[NSIndexSet indexSetWithIndexesInRange:range] forKey:@"media"];
  258. for( NSDictionary * args in arrayOfArgs )
  259. {
  260. NSInteger index = [[args objectForKey:@"index"] intValue];
  261. VLCMedia * media = [args objectForKey:@"media"];
  262. /* Sanity check */
  263. if( index && index > [cachedMedia count] )
  264. index = [cachedMedia count];
  265. [cachedMedia insertObject:media atIndex:index];
  266. }
  267. [self didChange:NSKeyValueChangeInsertion valuesAtIndexes:[NSIndexSet indexSetWithIndexesInRange:range] forKey:@"media"];
  268. // Post the notification
  269. // [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaListItemAdded
  270. // object:self
  271. // userInfo:args];
  272. // Let the delegate know that the item was added
  273. // if (delegate && [delegate respondsToSelector:@selector(mediaList:mediaAdded:atIndex:)])
  274. // [delegate mediaList:self mediaAdded:media atIndex:index];
  275. }
  276. - (void)mediaListItemRemoved:(NSNumber *)index
  277. {
  278. [self willChange:NSKeyValueChangeInsertion valuesAtIndexes:[NSIndexSet indexSetWithIndex:[index intValue]] forKey:@"media"];
  279. [cachedMedia removeObjectAtIndex:[index intValue]];
  280. [self didChange:NSKeyValueChangeInsertion valuesAtIndexes:[NSIndexSet indexSetWithIndex:[index intValue]] forKey:@"media"];
  281. // Post the notification
  282. [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaListItemDeleted
  283. object:self
  284. userInfo:[NSDictionary dictionaryWithObjectsAndKeys:
  285. index, @"index",
  286. nil]];
  287. // Let the delegate know that the item is being removed
  288. if (delegate && [delegate respondsToSelector:@selector(mediaList:mediaRemovedAtIndex:)])
  289. [delegate mediaList:self mediaRemovedAtIndex:[index intValue]];
  290. }
  291. @end