git.sesse.net Git - vlc/blob - src/control/hierarchical_media_list_view.c

   1 /*****************************************************************************
   2  * hierarchical_media_list_view.c: libvlc hierarchical media list view functs.
   3  *****************************************************************************
   4  * Copyright (C) 2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Pierre d'Herbemont <pdherbemont # videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc/libvlc.h>
  29 #include <vlc/libvlc_media.h>
  30 #include <vlc/libvlc_media_list.h>
  31 #include <vlc/libvlc_media_list_view.h>
  32
  33 #include "media_list_internal.h"
  34 #include "media_list_view_internal.h"
  35
  36 //#define DEBUG_HIERARCHICAL_VIEW
  37
  38 #ifdef DEBUG_HIERARCHICAL_VIEW
  39 # define trace( fmt, ... ) printf( "%s(): " fmt, __FUNCTION__, ##__VA_ARGS__ )
  40 #else
  41 # define trace( ... )
  42 #endif
  43
  44 /*
  45  * Private functions
  46  */
  47
  48 /**************************************************************************
  49  *       flat_media_list_view_count  (private)
  50  * (called by media_list_view_count)
  51  **************************************************************************/
  52 static int
  53 hierarch_media_list_view_count( libvlc_media_list_view_t * p_mlv,
  54                                 libvlc_exception_t * p_e )
  55 {
  56     VLC_UNUSED(p_e);
  57     return libvlc_media_list_count( p_mlv->p_mlist );
  58 }
  59
  60 /**************************************************************************
  61  *       flat_media_list_view_item_at_index  (private)
  62  * (called by flat_media_list_view_item_at_index)
  63  **************************************************************************/
  64 static libvlc_media_t *
  65 hierarch_media_list_view_item_at_index( libvlc_media_list_view_t * p_mlv,
  66                                     int index,
  67                                     libvlc_exception_t * p_e )
  68 {
  69     return libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  70 }
  71
  72 /**************************************************************************
  73  *       flat_media_list_view_item_at_index  (private)
  74  * (called by flat_media_list_view_item_at_index)
  75  **************************************************************************/
  76 static libvlc_media_list_view_t *
  77 hierarch_media_list_view_children_at_index( libvlc_media_list_view_t * p_mlv,
  78                                         int index,
  79                                         libvlc_exception_t * p_e )
  80 {
  81     libvlc_media_t * p_md;
  82     libvlc_media_list_t * p_submlist;
  83     libvlc_media_list_view_t * p_ret;
  84     p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  85     if( !p_md ) return NULL;
  86     p_submlist = libvlc_media_subitems( p_md );
  87     libvlc_media_release( p_md );
  88     if( !p_submlist ) return NULL;
  89     p_ret = libvlc_media_list_hierarchical_view( p_submlist, p_e );
  90     libvlc_media_list_release( p_submlist );
  91
  92     return p_ret;
  93 }
  94
  95 /**************************************************************************
  96  *       media_list_(item|will)_* (private) (Event callback)
  97  **************************************************************************/
  98 static void
  99 media_list_item_added( const libvlc_event_t * p_event, void * user_data )
 100 {
 101     libvlc_media_t * p_md;
 102     libvlc_media_list_view_t * p_mlv = user_data;
 103     int index = p_event->u.media_list_item_added.index;
 104     p_md = p_event->u.media_list_item_added.item;
 105     libvlc_media_list_view_item_added( p_mlv, p_md, index );
 106 }
 107 static void
 108 media_list_will_add_item( const libvlc_event_t * p_event, void * user_data )
 109 {
 110     libvlc_media_t * p_md;
 111     libvlc_media_list_view_t * p_mlv = user_data;
 112     int index = p_event->u.media_list_will_add_item.index;
 113     p_md = p_event->u.media_list_will_add_item.item;
 114     libvlc_media_list_view_will_add_item( p_mlv, p_md, index );
 115 }
 116 static void
 117 media_list_item_deleted( const libvlc_event_t * p_event, void * user_data )
 118 {
 119     libvlc_media_t * p_md;
 120     libvlc_media_list_view_t * p_mlv = user_data;
 121     int index = p_event->u.media_list_item_deleted.index;
 122     p_md = p_event->u.media_list_item_deleted.item;
 123     libvlc_media_list_view_item_deleted( p_mlv, p_md, index );
 124 }
 125 static void
 126 media_list_will_delete_item( const libvlc_event_t * p_event, void * user_data )
 127 {
 128     libvlc_media_t * p_md;
 129     libvlc_media_list_view_t * p_mlv = user_data;
 130     int index = p_event->u.media_list_will_delete_item.index;
 131     p_md = p_event->u.media_list_will_delete_item.item;
 132     libvlc_media_list_view_will_delete_item( p_mlv, p_md, index );
 133 }
 134
 135 /*
 136  * Public libvlc functions
 137  */
 138
 139
 140 /**************************************************************************
 141  *       flat_media_list_view_release (private)
 142  * (called by media_list_view_release)
 143  **************************************************************************/
 144 static void
 145 hierarch_media_list_view_release( libvlc_media_list_view_t * p_mlv )
 146 {
 147     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 148                          libvlc_MediaListItemAdded,
 149                          media_list_item_added, p_mlv );
 150     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 151                          libvlc_MediaListWillAddItem,
 152                          media_list_will_add_item, p_mlv );
 153     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 154                          libvlc_MediaListItemDeleted,
 155                          media_list_item_deleted, p_mlv );
 156     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 157                          libvlc_MediaListWillDeleteItem,
 158                          media_list_will_delete_item, p_mlv );
 159 }
 160
 161 /**************************************************************************
 162  *       libvlc_media_list_flat_view (Public)
 163  **************************************************************************/
 164 libvlc_media_list_view_t *
 165 libvlc_media_list_hierarchical_view( libvlc_media_list_t * p_mlist,
 166                                      libvlc_exception_t * p_e )
 167 {
 168     trace("\n");
 169     libvlc_media_list_view_t * p_mlv;
 170     p_mlv = libvlc_media_list_view_new( p_mlist,
 171                                         hierarch_media_list_view_count,
 172                                         hierarch_media_list_view_item_at_index,
 173                                         hierarch_media_list_view_children_at_index,
 174                                         libvlc_media_list_hierarchical_view,
 175                                         hierarch_media_list_view_release,
 176                                         NULL,
 177                                         p_e );
 178     libvlc_media_list_lock( p_mlist );
 179     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 180                          libvlc_MediaListItemAdded,
 181                          media_list_item_added, p_mlv, NULL );
 182     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 183                          libvlc_MediaListWillAddItem,
 184                          media_list_will_add_item, p_mlv, NULL );
 185     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 186                          libvlc_MediaListItemDeleted,
 187                          media_list_item_deleted, p_mlv, NULL );
 188     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 189                          libvlc_MediaListWillDeleteItem,
 190                          media_list_will_delete_item, p_mlv, NULL );
 191     libvlc_media_list_unlock( p_mlist );
 192     return p_mlv;
 193 }