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

   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
  25 #import "VLCMediaList.h"
  26 #import "VLCLibrary.h"
  27 #import "VLCEventManager.h"
  28 #import "VLCLibVLCBridging.h"
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc/vlc.h>
  34 #include <vlc/libvlc.h>
  35
  36 /* Notification Messages */
  37 NSString * VLCMediaListItemAdded        = @"VLCMediaListItemAdded";
  38 NSString * VLCMediaListItemDeleted      = @"VLCMediaListItemDeleted";
  39
  40 // TODO: Documentation
  41 @interface VLCMediaList (Private)
  42 /* Initializers */
  43 - (void)initInternalMediaList;
  44
  45 /* Libvlc event bridges */
  46 - (void)mediaListItemAdded:(NSArray *)args;
  47 - (void)mediaListItemRemoved:(NSNumber *)index;
  48 @end
  49
  50 /* libvlc event callback */
  51 static void HandleMediaListItemAdded(const libvlc_event_t * event, void * user_data)
  52 {
  53     NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
  54     id self = user_data;
  55     [[VLCEventManager sharedManager] callOnMainThreadObject:self
  56                                                  withMethod:@selector(mediaListItemAdded:)
  57                                        withArgumentAsObject:[NSArray arrayWithObject:[NSDictionary dictionaryWithObjectsAndKeys:
  58                                                           [VLCMedia mediaWithLibVLCMediaDescriptor:event->u.media_list_item_added.item], @"media",
  59                                                           [NSNumber numberWithInt:event->u.media_list_item_added.index], @"index",
  60                                                           nil]]];
  61     [pool release];
  62 }
  63
  64 static void HandleMediaListItemDeleted( const libvlc_event_t * event, void * user_data)
  65 {
  66     NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
  67     id self = user_data;
  68     [[VLCEventManager sharedManager] callOnMainThreadObject:self
  69                                                  withMethod:@selector(mediaListItemRemoved:)
  70                                        withArgumentAsObject:[NSNumber numberWithInt:event->u.media_list_item_deleted.index]];
  71     [pool release];
  72 }
  73
  74 @implementation VLCMediaList
  75 - (id)init
  76 {
  77     if (self = [super init])
  78     {
  79         // Create a new libvlc media list instance
  80         p_mlist = libvlc_media_list_new([VLCLibrary sharedInstance]);
  81
  82         // Initialize internals to defaults
  83         cachedMedia = [[NSMutableArray alloc] init];
  84         [self initInternalMediaList];
  85     }
  86     return self;
  87 }
  88
  89 - (void)release
  90 {
  91     @synchronized(self)
  92     {
  93         if([self retainCount] <= 1)
  94         {
  95             /* We must make sure we won't receive new event after an upcoming dealloc
  96              * We also may receive a -retain in some event callback that may occcur
  97              * Before libvlc_event_detach. So this can't happen in dealloc */
  98             libvlc_event_manager_t * p_em = libvlc_media_list_event_manager(p_mlist);
  99             libvlc_event_detach(p_em, libvlc_MediaListItemDeleted, HandleMediaListItemDeleted, self);
 100             libvlc_event_detach(p_em, libvlc_MediaListItemAdded,   HandleMediaListItemAdded,   self);
 101         }
 102         [super release];
 103     }
 104 }
 105
 106 - (void)dealloc
 107 {
 108     // Release allocated memory
 109     delegate = nil;
 110
 111     libvlc_media_list_release( p_mlist );
 112     [cachedMedia release];
 113     [super dealloc];
 114 }
 115
 116 - (NSString *)description
 117 {
 118     NSMutableString * content = [NSMutableString string];
 119     int i;
 120     for( i = 0; i < [self count]; i++)
 121     {
 122         [content appendFormat:@"%@\n", [self mediaAtIndex: i]];
 123     }
 124     return [NSString stringWithFormat:@"<%@ %p> {\n%@}", [self className], self, content];
 125 }
 126
 127 - (void)lock
 128 {
 129     libvlc_media_list_lock( p_mlist );
 130 }
 131
 132 - (void)unlock
 133 {
 134     libvlc_media_list_unlock( p_mlist );
 135 }
 136
 137 - (NSInteger)addMedia:(VLCMedia *)media
 138 {
 139     int index = [self count];
 140     [self insertMedia:media atIndex:index];
 141     return index;
 142 }
 143
 144 - (void)insertMedia:(VLCMedia *)media atIndex: (NSInteger)index
 145 {
 146     [media retain];
 147
 148     // Add it to the libvlc's medialist
 149     libvlc_media_list_insert_media(p_mlist, [media libVLCMediaDescriptor], index);
 150 }
 151
 152 - (void)removeMediaAtIndex:(NSInteger)index
 153 {
 154     [[self mediaAtIndex:index] release];
 155
 156     // Remove it from the libvlc's medialist
 157     libvlc_media_list_remove_index(p_mlist, index);
 158 }
 159
 160 - (VLCMedia *)mediaAtIndex:(NSInteger)index
 161 {
 162     return [cachedMedia objectAtIndex:index];
 163 }
 164
 165 - (NSInteger)indexOfMedia:(VLCMedia *)media
 166 {
 167     NSInteger result = libvlc_media_list_index_of_item(p_mlist, [media libVLCMediaDescriptor]);
 168     return result;
 169 }
 170
 171 /* KVC Compliance: For the @"media" key */
 172 - (NSInteger)countOfMedia
 173 {
 174     return [self count];
 175 }
 176
 177 - (id)objectInMediaAtIndex:(NSUInteger)i
 178 {
 179     return [self mediaAtIndex:i];
 180 }
 181
 182 - (NSInteger)count
 183 {
 184     return [cachedMedia count];
 185 }
 186
 187 - (void)insertObject:(id)object inMediaAtIndex:(NSUInteger)i
 188 {
 189     [self insertMedia:object atIndex:i];
 190 }
 191
 192 - (void)removeObjectFromMediaAtIndex:(NSUInteger)i
 193 {
 194     [self removeMediaAtIndex:i];
 195 }
 196
 197 @synthesize delegate;
 198
 199 - (BOOL)isReadOnly
 200 {
 201     return libvlc_media_list_is_readonly( p_mlist );
 202 }
 203
 204 @end
 205
 206 @implementation VLCMediaList (LibVLCBridging)
 207 + (id)mediaListWithLibVLCMediaList:(void *)p_new_mlist;
 208 {
 209     return [[[VLCMediaList alloc] initWithLibVLCMediaList:p_new_mlist] autorelease];
 210 }
 211
 212 - (id)initWithLibVLCMediaList:(void *)p_new_mlist;
 213 {
 214     if( self = [super init] )
 215     {
 216         p_mlist = p_new_mlist;
 217         libvlc_media_list_retain( p_mlist );
 218         libvlc_media_list_lock( p_mlist );
 219         cachedMedia = [[NSMutableArray alloc] initWithCapacity:libvlc_media_list_count(p_mlist)];
 220
 221         NSUInteger i, count = libvlc_media_list_count(p_mlist);
 222         for( i = 0; i < count; i++ )
 223         {
 224             libvlc_media_t * p_md = libvlc_media_list_item_at_index(p_mlist, i);
 225             [cachedMedia addObject:[VLCMedia mediaWithLibVLCMediaDescriptor:p_md]];
 226             libvlc_media_release(p_md);
 227         }
 228         [self initInternalMediaList];
 229         libvlc_media_list_unlock(p_mlist);
 230     }
 231     return self;
 232 }
 233
 234 - (void *)libVLCMediaList
 235 {
 236     return p_mlist;
 237 }
 238 @end
 239
 240 @implementation VLCMediaList (Private)
 241 - (void)initInternalMediaList
 242 {
 243     // Add event callbacks
 244     libvlc_event_manager_t * p_em = libvlc_media_list_event_manager(p_mlist);
 245     libvlc_event_attach( p_em, libvlc_MediaListItemAdded,   HandleMediaListItemAdded,   self);
 246     libvlc_event_attach( p_em, libvlc_MediaListItemDeleted, HandleMediaListItemDeleted, self);
 247 }
 248
 249 - (void)mediaListItemAdded:(NSArray *)arrayOfArgs
 250 {
 251     /* We hope to receive index in a nide range, that could change one day */
 252     NSInteger start = [[[arrayOfArgs objectAtIndex: 0] objectForKey:@"index"] intValue];
 253     NSInteger end = [[[arrayOfArgs objectAtIndex: [arrayOfArgs count]-1] objectForKey:@"index"] intValue];
 254     NSRange range = NSMakeRange(start, end-start);
 255
 256     [self willChange:NSKeyValueChangeInsertion valuesAtIndexes:[NSIndexSet indexSetWithIndexesInRange:range] forKey:@"media"];
 257     for( NSDictionary * args in arrayOfArgs )
 258     {
 259         NSInteger index = [[args objectForKey:@"index"] intValue];
 260         VLCMedia * media = [args objectForKey:@"media"];
 261         /* Sanity check */
 262         if( index && index > [cachedMedia count] )
 263             index = [cachedMedia count];
 264         [cachedMedia insertObject:media atIndex:index];
 265     }
 266     [self didChange:NSKeyValueChangeInsertion valuesAtIndexes:[NSIndexSet indexSetWithIndexesInRange:range] forKey:@"media"];
 267
 268     // Post the notification
 269 //    [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaListItemAdded
 270 //                                                        object:self
 271 //                                                      userInfo:args];
 272
 273     // Let the delegate know that the item was added
 274   //  if (delegate && [delegate respondsToSelector:@selector(mediaList:mediaAdded:atIndex:)])
 275     //    [delegate mediaList:self mediaAdded:media atIndex:index];
 276 }
 277
 278 - (void)mediaListItemRemoved:(NSNumber *)index
 279 {
 280     [self willChange:NSKeyValueChangeInsertion valuesAtIndexes:[NSIndexSet indexSetWithIndex:[index intValue]] forKey:@"media"];
 281     [cachedMedia removeObjectAtIndex:[index intValue]];
 282     [self didChange:NSKeyValueChangeInsertion valuesAtIndexes:[NSIndexSet indexSetWithIndex:[index intValue]] forKey:@"media"];
 283
 284     // Post the notification
 285     [[NSNotificationCenter defaultCenter] postNotificationName:VLCMediaListItemDeleted
 286                                                         object:self
 287                                                       userInfo:[NSDictionary dictionaryWithObjectsAndKeys:
 288                                                           index, @"index",
 289                                                           nil]];
 290
 291     // Let the delegate know that the item is being removed
 292     if (delegate && [delegate respondsToSelector:@selector(mediaList:mediaRemovedAtIndex:)])
 293         [delegate mediaList:self mediaRemovedAtIndex:[index intValue]];
 294 }
 295 @end