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     return libvlc_media_list_count( p_mlv->p_mlist, p_e );
  57 }
  58
  59 /**************************************************************************
  60  *       flat_media_list_view_item_at_index  (private)
  61  * (called by flat_media_list_view_item_at_index)
  62  **************************************************************************/
  63 static libvlc_media_t *
  64 hierarch_media_list_view_item_at_index( libvlc_media_list_view_t * p_mlv,
  65                                     int index,
  66                                     libvlc_exception_t * p_e )
  67 {
  68     return libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  69 }
  70
  71 /**************************************************************************
  72  *       flat_media_list_view_item_at_index  (private)
  73  * (called by flat_media_list_view_item_at_index)
  74  **************************************************************************/
  75 static libvlc_media_list_view_t *
  76 hierarch_media_list_view_children_at_index( libvlc_media_list_view_t * p_mlv,
  77                                         int index,
  78                                         libvlc_exception_t * p_e )
  79 {
  80     libvlc_media_t * p_md;
  81     libvlc_media_list_t * p_submlist;
  82     libvlc_media_list_view_t * p_ret;
  83     p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  84     if( !p_md ) return NULL;
  85     p_submlist = libvlc_media_subitems( p_md, p_e );
  86     libvlc_media_release( p_md );
  87     if( !p_submlist ) return NULL;
  88     p_ret = libvlc_media_list_hierarchical_view( p_submlist, p_e );
  89     libvlc_media_list_release( p_submlist );
  90
  91     return p_ret;
  92 }
  93
  94 /**************************************************************************
  95  *       media_list_(item|will)_* (private) (Event callback)
  96  **************************************************************************/
  97 static void
  98 media_list_item_added( const libvlc_event_t * p_event, void * user_data )
  99 {
 100     libvlc_media_t * p_md;
 101     libvlc_media_list_view_t * p_mlv = user_data;
 102     int index = p_event->u.media_list_item_added.index;
 103     p_md = p_event->u.media_list_item_added.item;
 104     libvlc_media_list_view_item_added( p_mlv, p_md, index );
 105 }
 106 static void
 107 media_list_will_add_item( const libvlc_event_t * p_event, void * user_data )
 108 {
 109     libvlc_media_t * p_md;
 110     libvlc_media_list_view_t * p_mlv = user_data;
 111     int index = p_event->u.media_list_will_add_item.index;
 112     p_md = p_event->u.media_list_will_add_item.item;
 113     libvlc_media_list_view_will_add_item( p_mlv, p_md, index );
 114 }
 115 static void
 116 media_list_item_deleted( const libvlc_event_t * p_event, void * user_data )
 117 {
 118     libvlc_media_t * p_md;
 119     libvlc_media_list_view_t * p_mlv = user_data;
 120     int index = p_event->u.media_list_item_deleted.index;
 121     p_md = p_event->u.media_list_item_deleted.item;
 122     libvlc_media_list_view_item_deleted( p_mlv, p_md, index );
 123 }
 124 static void
 125 media_list_will_delete_item( const libvlc_event_t * p_event, void * user_data )
 126 {
 127     libvlc_media_t * p_md;
 128     libvlc_media_list_view_t * p_mlv = user_data;
 129     int index = p_event->u.media_list_will_delete_item.index;
 130     p_md = p_event->u.media_list_will_delete_item.item;
 131     libvlc_media_list_view_will_delete_item( p_mlv, p_md, index );
 132 }
 133
 134 /*
 135  * Public libvlc functions
 136  */
 137
 138
 139 /**************************************************************************
 140  *       flat_media_list_view_release (private)
 141  * (called by media_list_view_release)
 142  **************************************************************************/
 143 static void
 144 hierarch_media_list_view_release( libvlc_media_list_view_t * p_mlv )
 145 {
 146     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 147                          libvlc_MediaListItemAdded,
 148                          media_list_item_added, p_mlv, NULL );
 149     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 150                          libvlc_MediaListWillAddItem,
 151                          media_list_will_add_item, p_mlv, NULL );
 152     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 153                          libvlc_MediaListItemDeleted,
 154                          media_list_item_deleted, p_mlv, NULL );
 155     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 156                          libvlc_MediaListWillDeleteItem,
 157                          media_list_will_delete_item, p_mlv, NULL );
 158 }
 159
 160 /**************************************************************************
 161  *       libvlc_media_list_flat_view (Public)
 162  **************************************************************************/
 163 libvlc_media_list_view_t *
 164 libvlc_media_list_hierarchical_view( libvlc_media_list_t * p_mlist,
 165                                      libvlc_exception_t * p_e )
 166 {
 167     trace("\n");
 168     libvlc_media_list_view_t * p_mlv;
 169     p_mlv = libvlc_media_list_view_new( p_mlist,
 170                                         hierarch_media_list_view_count,
 171                                         hierarch_media_list_view_item_at_index,
 172                                         hierarch_media_list_view_children_at_index,
 173                                         libvlc_media_list_hierarchical_view,
 174                                         hierarch_media_list_view_release,
 175                                         NULL,
 176                                         p_e );
 177     libvlc_media_list_lock( p_mlist );
 178     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 179                          libvlc_MediaListItemAdded,
 180                          media_list_item_added, p_mlv, NULL );
 181     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 182                          libvlc_MediaListWillAddItem,
 183                          media_list_will_add_item, p_mlv, NULL );
 184     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 185                          libvlc_MediaListItemDeleted,
 186                          media_list_item_deleted, p_mlv, NULL );
 187     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 188                          libvlc_MediaListWillDeleteItem,
 189                          media_list_will_delete_item, p_mlv, NULL );
 190     libvlc_media_list_unlock( p_mlist );
 191     return p_mlv;
 192 }