git.sesse.net Git - vlc/blob - src/playlist/search.c

   1 /*****************************************************************************
   2  * search.c : Search functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@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 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26 #include <assert.h>
  27
  28 #include <vlc_common.h>
  29 #include "vlc_playlist.h"
  30 #include "playlist_internal.h"
  31
  32 /***************************************************************************
  33  * Item search functions
  34  ***************************************************************************/
  35
  36 /**
  37  * Search a playlist item by its playlist_item id
  38  *
  39  * \param p_playlist the playlist
  40  * \param i_id the id to find
  41  * \return the item or NULL on failure
  42  */
  43 playlist_item_t * playlist_ItemGetById( playlist_t * p_playlist , int i_id,
  44                                         bool b_locked )
  45 {
  46     int i;
  47     PL_LOCK_IF( !b_locked );
  48     ARRAY_BSEARCH( p_playlist->all_items,->i_id, int, i_id, i );
  49     if( i != -1 )
  50     {
  51         PL_UNLOCK_IF( !b_locked );
  52         return ARRAY_VAL( p_playlist->all_items, i );
  53     }
  54     PL_UNLOCK_IF( !b_locked );
  55     return NULL;
  56 }
  57
  58 /**
  59  * Search an item by its input_item_t
  60  *
  61  * \param p_playlist the playlist
  62  * \param p_item the input_item_t to find
  63  * \return the item, or NULL on failure
  64  */
  65 playlist_item_t * playlist_ItemGetByInput( playlist_t * p_playlist ,
  66                                            input_item_t *p_item,
  67                                            bool b_locked )
  68 {
  69     int i;
  70     PL_LOCK_IF( !b_locked );
  71     if( get_current_status_item( p_playlist ) &&
  72         get_current_status_item( p_playlist )->p_input == p_item )
  73     {
  74         /* FIXME: this is potentially dangerous, we could destroy
  75          * p_ret any time soon */
  76         playlist_item_t *p_ret = get_current_status_item( p_playlist );
  77         PL_UNLOCK_IF( !b_locked );
  78         return p_ret;
  79     }
  80     /** \todo Check if this is always incremental and whether we can bsearch */
  81     for( i =  0 ; i < p_playlist->all_items.i_size; i++ )
  82     {
  83         if( ARRAY_VAL(p_playlist->all_items, i)->p_input->i_id == p_item->i_id )
  84         {
  85             PL_UNLOCK_IF( !b_locked );
  86             return ARRAY_VAL(p_playlist->all_items, i);
  87         }
  88     }
  89     PL_UNLOCK_IF( !b_locked );
  90     return NULL;
  91 }
  92
  93
  94 /**
  95  * Get input by item id
  96  *
  97  * Find the playlist item matching the input id under the given node
  98  * \param p_playlist the playlist
  99  * \param i_input_id the id of the input to find
 100  * \param p_root the root node of the search
 101  * \return the playlist item or NULL on failure
 102  */
 103 playlist_item_t * playlist_ItemGetByInputId( playlist_t *p_playlist,
 104                                              int i_input_id,
 105                                              playlist_item_t *p_root )
 106 {
 107     int i;
 108     PL_ASSERT_LOCKED;
 109     assert( p_root != NULL );
 110     for( i = 0 ; i< p_root->i_children ; i++ )
 111     {
 112         if( p_root->pp_children[i]->p_input &&
 113             p_root->pp_children[i]->p_input->i_id == i_input_id )
 114         {
 115             return p_root->pp_children[i];
 116         }
 117         else if( p_root->pp_children[i]->i_children >= 0 )
 118         {
 119             return playlist_ItemGetByInputId( p_playlist, i_input_id,
 120                                               p_root->pp_children[i] );
 121         }
 122     }
 123     return NULL;
 124 }
 125
 126 /***************************************************************************
 127  * Live search handling
 128  ***************************************************************************/
 129
 130 /**
 131  * Enable all items in the playlist
 132  * @param p_root: the current root item
 133  */
 134 static void playlist_LiveSearchClean( playlist_item_t *p_root )
 135 {
 136     for( int i = 0; i < p_root->i_children; i++ )
 137     {
 138         playlist_item_t *p_item = p_root->pp_children[i];
 139         if( p_item->i_children >= 0 )
 140             playlist_LiveSearchClean( p_item );
 141         p_item->i_flags &= ~PLAYLIST_DBL_FLAG;
 142     }
 143 }
 144
 145
 146 /**
 147  * Enable/Disable items in the playlist according to the search argument
 148  * @param p_root: the current root item
 149  * @param psz_string: the string to search
 150  * @return true if an item match
 151  */
 152 static bool playlist_LiveSearchUpdateInternal( playlist_item_t *p_root,
 153                                                const char *psz_string )
 154 {
 155     int i;
 156     bool b_match = false;
 157     for( i = 0 ; i < p_root->i_children ; i ++ )
 158     {
 159         bool b_enable = false;
 160         playlist_item_t *p_item = p_root->pp_children[i];
 161         // Go recurssively if their is some children
 162         if( p_item->i_children >= 0 &&
 163             playlist_LiveSearchUpdateInternal( p_item, psz_string ) )
 164         {
 165             b_enable = true;
 166         }
 167
 168         if( !b_enable )
 169         {
 170             vlc_mutex_lock( &p_item->p_input->lock );
 171             // Do we have some meta ?
 172             if( p_item->p_input->p_meta )
 173             {
 174                 // Use Title or fall back to psz_name
 175                 const char *psz_title = vlc_meta_Get( p_item->p_input->p_meta, vlc_meta_Title );
 176                 if( !psz_title )
 177                     psz_title = p_item->p_input->psz_name;
 178                 const char *psz_album = vlc_meta_Get( p_item->p_input->p_meta, vlc_meta_Album );
 179                 const char *psz_artist = vlc_meta_Get( p_item->p_input->p_meta, vlc_meta_Artist );
 180                 b_enable = ( psz_title && strcasestr( psz_title, psz_string ) ) ||
 181                            ( psz_album && strcasestr( psz_album, psz_string ) ) ||
 182                            ( psz_artist && strcasestr( psz_artist, psz_string ) );
 183             }
 184             else
 185                 b_enable = p_item->p_input->psz_name && strcasestr( p_item->p_input->psz_name, psz_string );
 186             vlc_mutex_unlock( &p_item->p_input->lock );
 187         }
 188
 189         if( b_enable )
 190             p_item->i_flags &= ~PLAYLIST_DBL_FLAG;
 191         else
 192             p_item->i_flags |= PLAYLIST_DBL_FLAG;
 193
 194         b_match |= b_enable;
 195    }
 196    return b_match;
 197 }
 198
 199
 200
 201 /**
 202  * Launch the recursive search in the playlist
 203  * @param p_playlist: the playlist
 204  * @param p_root: the current root item
 205  * @param psz_string: the string to find
 206  * @return VLC_SUCCESS
 207  */
 208 int playlist_LiveSearchUpdate( playlist_t *p_playlist, playlist_item_t *p_root,
 209                                const char *psz_string )
 210 {
 211     PL_ASSERT_LOCKED;
 212     pl_priv(p_playlist)->b_reset_currently_playing = true;
 213     if( *psz_string )
 214         playlist_LiveSearchUpdateInternal( p_root, psz_string );
 215     else
 216         playlist_LiveSearchClean( p_root );
 217     vlc_cond_signal( &pl_priv(p_playlist)->signal );
 218     return VLC_SUCCESS;
 219 }
 220