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: flat_media_list.c 21287 2007-08-20 01:28:12Z pdherbemont $
   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 #include "libvlc_internal.h"
  25 #include <vlc/libvlc.h>
  26 #include <assert.h>
  27 #include "vlc_arrays.h"
  28
  29 //#define DEBUG_HIERARCHICAL_VIEW
  30
  31 #ifdef DEBUG_HIERARCHICAL_VIEW
  32 # define trace( fmt, ... ) printf( "%s(): " fmt, __FUNCTION__, ##__VA_ARGS__ )
  33 #else
  34 # define trace( ... )
  35 #endif
  36
  37 struct libvlc_media_list_view_private_t
  38 {
  39     vlc_array_t array;
  40 };
  41
  42 /*
  43  * Private functions
  44  */
  45
  46 /**************************************************************************
  47  *       flat_media_list_view_count  (private)
  48  * (called by media_list_view_count)
  49  **************************************************************************/
  50 static int
  51 hierarch_media_list_view_count( libvlc_media_list_view_t * p_mlv,
  52                                 libvlc_exception_t * p_e )
  53 {
  54     return libvlc_media_list_count( p_mlv->p_mlist, p_e );
  55 }
  56
  57 /**************************************************************************
  58  *       flat_media_list_view_item_at_index  (private)
  59  * (called by flat_media_list_view_item_at_index)
  60  **************************************************************************/
  61 static libvlc_media_descriptor_t *
  62 hierarch_media_list_view_item_at_index( libvlc_media_list_view_t * p_mlv,
  63                                     int index,
  64                                     libvlc_exception_t * p_e )
  65 {
  66     return libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  67 }
  68
  69 /**************************************************************************
  70  *       flat_media_list_view_item_at_index  (private)
  71  * (called by flat_media_list_view_item_at_index)
  72  **************************************************************************/
  73 static libvlc_media_list_view_t *
  74 hierarch_media_list_view_children_at_index( libvlc_media_list_view_t * p_mlv,
  75                                         int index,
  76                                         libvlc_exception_t * p_e )
  77 {
  78     libvlc_media_descriptor_t * p_md;
  79     libvlc_media_list_t * p_submlist;
  80     p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  81     if( !p_md ) return NULL;
  82     p_submlist = libvlc_media_descriptor_subitems( p_md, p_e );
  83     if( !p_submlist ) return NULL;
  84     return libvlc_media_list_hierarchical_view( p_submlist, p_e );
  85 }
  86
  87 /**************************************************************************
  88  *       flat_media_list_view_release (private)
  89  * (called by media_list_view_release)
  90  **************************************************************************/
  91 static void
  92 hierarch_media_list_view_release( libvlc_media_list_view_t * p_mlv )
  93 {
  94 }
  95
  96 /*
  97  * Public libvlc functions
  98  */
  99
 100 /**************************************************************************
 101  *       libvlc_media_list_flat_view (Public)
 102  **************************************************************************/
 103 libvlc_media_list_view_t *
 104 libvlc_media_list_hierarchical_view( libvlc_media_list_t * p_mlist,
 105                                      libvlc_exception_t * p_e )
 106 {
 107     trace("\n");
 108     libvlc_media_list_view_t * p_mlv;
 109     libvlc_media_list_lock( p_mlist );
 110     p_mlv = libvlc_media_list_view_new( p_mlist,
 111                                         hierarch_media_list_view_count,
 112                                         hierarch_media_list_view_item_at_index,
 113                                         hierarch_media_list_view_children_at_index,
 114                                         hierarch_media_list_view_release,
 115                                         NULL,
 116                                         p_e );
 117     libvlc_media_list_unlock( p_mlist );
 118     return p_mlv;
 119 }