git.sesse.net Git - vlc/blob - src/input/item.c

   1 /*****************************************************************************
   2  * item.c: input_item management
   3  *****************************************************************************
   4  * Copyright (C) 1998-2004 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
  24 #include <vlc/vlc.h>
  25 #include <vlc/input.h>
  26 #include "vlc_playlist.h"
  27 #include "vlc_interface.h"
  28
  29 static void GuessType( input_item_t *p_item );
  30
  31 /**
  32  * Get a info item from a given category in a given input item.
  33  *
  34  * \param p_i The input item to get info from
  35  * \param psz_cat String representing the category for the info
  36  * \param psz_name String representing the name of the desired info
  37  * \return A pointer to the string with the given info if found, or an
  38  *         empty string otherwise. The caller should free the returned
  39  *         pointer.
  40  */
  41 char *input_ItemGetInfo( input_item_t *p_i,
  42                               const char *psz_cat,
  43                               const char *psz_name )
  44 {
  45     int i,j;
  46
  47     vlc_mutex_lock( &p_i->lock );
  48
  49     for( i = 0 ; i< p_i->i_categories  ; i++ )
  50     {
  51         info_category_t *p_cat = p_i->pp_categories[i];
  52
  53         if( !psz_cat || strcmp( p_cat->psz_name, psz_cat ) )
  54             continue;
  55
  56         for( j = 0; j < p_cat->i_infos ; j++ )
  57         {
  58             if( !strcmp( p_cat->pp_infos[j]->psz_name, psz_name ) )
  59             {
  60                 char *psz_ret = strdup( p_cat->pp_infos[j]->psz_value );
  61                 vlc_mutex_unlock( &p_i->lock );
  62                 return psz_ret;
  63             }
  64         }
  65     }
  66     vlc_mutex_unlock( &p_i->lock );
  67     return strdup( "" );
  68 }
  69
  70 static void input_ItemDestroy ( gc_object_t *p_this )
  71 {
  72     vlc_object_t *p_obj = (vlc_object_t *)p_this->p_destructor_arg;
  73     input_item_t *p_input = (input_item_t *) p_this;
  74     int i;
  75
  76     playlist_t *p_playlist = pl_Yield( p_obj );
  77     input_ItemClean( p_input );
  78
  79     for( i = 0 ; i< p_playlist->i_input_items ; i++ )
  80     {
  81         if( p_playlist->pp_input_items[i]->i_id == p_input->i_id )
  82         {
  83             REMOVE_ELEM( p_playlist->pp_input_items,
  84                          p_playlist->i_input_items, i );
  85             break;
  86         }
  87     }
  88     pl_Release( p_obj );
  89     free( p_input );
  90 }
  91
  92 void input_ItemAddOption( input_item_t *p_input,
  93                           const char *psz_option )
  94 {
  95     if( !psz_option ) return;
  96     vlc_mutex_lock( &p_input->lock );
  97     INSERT_ELEM( p_input->ppsz_options, p_input->i_options,
  98                  p_input->i_options, strdup( psz_option ) );
  99     vlc_mutex_unlock( &p_input->lock );
 100 }
 101
 102 void input_ItemAddOptionNoDup( input_item_t *p_input,
 103                                const char *psz_option )
 104 {
 105     int i;
 106     if( !psz_option ) return ;
 107     vlc_mutex_lock( &p_input->lock );
 108     for( i = 0 ; i< p_input->i_options; i++ )
 109     {
 110         if( !strcmp( p_input->ppsz_options[i], psz_option ) )
 111         {
 112             vlc_mutex_unlock(& p_input->lock );
 113             return;
 114         }
 115     }
 116     TAB_APPEND( p_input->i_options, p_input->ppsz_options, strdup( psz_option));    vlc_mutex_unlock( &p_input->lock );
 117 }
 118
 119
 120 int input_ItemAddInfo( input_item_t *p_i,
 121                             const char *psz_cat,
 122                             const char *psz_name,
 123                             const char *psz_format, ... )
 124 {
 125     va_list args;
 126     int i;
 127     info_t *p_info = NULL;
 128     info_category_t *p_cat = NULL ;
 129
 130     vlc_mutex_lock( &p_i->lock );
 131
 132     for( i = 0 ; i < p_i->i_categories ; i ++ )
 133     {
 134         if( !strcmp( p_i->pp_categories[i]->psz_name, psz_cat ) )
 135         {
 136             p_cat = p_i->pp_categories[i];
 137             break;
 138         }
 139     }
 140     if( !p_cat )
 141     {
 142         if( !(p_cat = (info_category_t *)malloc( sizeof(info_category_t) )) )
 143         {
 144             vlc_mutex_unlock( &p_i->lock );
 145             return VLC_EGENERIC;
 146         }
 147         p_cat->psz_name = strdup( psz_cat );
 148         p_cat->i_infos = 0;
 149         p_cat->pp_infos = 0;
 150         INSERT_ELEM( p_i->pp_categories, p_i->i_categories, p_i->i_categories,
 151                      p_cat );
 152     }
 153
 154     for( i = 0; i< p_cat->i_infos; i++ )
 155     {
 156         if( !strcmp( p_cat->pp_infos[i]->psz_name, psz_name ) )
 157         {
 158             p_info = p_cat->pp_infos[i];
 159             break;
 160         }
 161     }
 162
 163     if( !p_info )
 164     {
 165         if( ( p_info = (info_t *)malloc( sizeof( info_t ) ) ) == NULL )
 166         {
 167             vlc_mutex_unlock( &p_i->lock );
 168             return VLC_EGENERIC;
 169         }
 170         INSERT_ELEM( p_cat->pp_infos, p_cat->i_infos, p_cat->i_infos, p_info );
 171         p_info->psz_name = strdup( psz_name );
 172     }
 173     else
 174     {
 175         if( p_info->psz_value ) free( p_info->psz_value );
 176     }
 177
 178     va_start( args, psz_format );
 179     vasprintf( &p_info->psz_value, psz_format, args);
 180     va_end( args );
 181
 182     vlc_mutex_unlock( &p_i->lock );
 183
 184     return VLC_SUCCESS;
 185 }
 186
 187 input_item_t *input_ItemGetById( playlist_t *p_playlist, int i_id )
 188 {
 189     int i, i_top, i_bottom;
 190     i_bottom = 0; i_top = p_playlist->i_input_items -1;
 191     i = i_top  /2 ;
 192     while( p_playlist->pp_input_items[i]->i_id != i_id &&
 193            i_top > i_bottom )
 194     {
 195         if( p_playlist->pp_input_items[i]->i_id < i_id )
 196             i_bottom = i + 1;
 197         else
 198             i_top = i - 1;
 199         i = i_bottom + ( i_top - i_bottom ) / 2;
 200     }
 201     if( p_playlist->pp_input_items[i]->i_id == i_id )
 202     {
 203         return p_playlist->pp_input_items[i];
 204     }
 205     return NULL;
 206 }
 207
 208 input_item_t *__input_ItemNewExt( vlc_object_t *p_obj, const char *psz_uri,
 209                                   const char *psz_name, int i_options,
 210                                   const char **ppsz_options, int i_duration )
 211 {
 212     return input_ItemNewWithType( p_obj, psz_uri, psz_name,
 213                                   i_options, ppsz_options,
 214                                   i_duration, ITEM_TYPE_UNKNOWN );
 215 }
 216
 217
 218 input_item_t *input_ItemNewWithType( vlc_object_t *p_obj, const char *psz_uri,
 219                                 const char *psz_name, int i_options,
 220                                 const char **ppsz_options, int i_duration,
 221                                 int i_type )
 222 {
 223     playlist_t *p_playlist = pl_Yield( p_obj );
 224     DECMALLOC_NULL( p_input, input_item_t );
 225
 226     input_ItemInit( p_obj, p_input );
 227     vlc_gc_init( p_input, input_ItemDestroy, (void *)p_obj );
 228
 229     PL_LOCK;
 230     p_input->i_id = ++p_playlist->i_last_input_id;
 231     TAB_APPEND( p_playlist->i_input_items,
 232                 p_playlist->pp_input_items,
 233                 p_input );
 234     PL_UNLOCK;
 235     pl_Release( p_obj );
 236
 237     p_input->b_fixed_name = VLC_FALSE;
 238
 239     if( psz_uri )
 240         p_input->psz_uri = strdup( psz_uri );
 241     else
 242         p_input->psz_uri = NULL;
 243
 244     if( psz_name != NULL )
 245         p_input->psz_name = strdup( psz_name );
 246     else
 247         p_input->psz_name = strdup ( p_input->psz_uri );
 248
 249     p_input->i_type = i_type;
 250     p_input->b_prefers_tree = VLC_FALSE;
 251
 252     if( p_input->i_type == ITEM_TYPE_UNKNOWN )
 253         GuessType( p_input );
 254
 255     p_input->i_duration = i_duration;
 256     p_input->ppsz_options = NULL;
 257
 258     for( p_input->i_options = 0; p_input->i_options < i_options;
 259          p_input->i_options++ )
 260     {
 261         if( !p_input->i_options )
 262         {
 263             p_input->ppsz_options = malloc( i_options * sizeof(char *) );
 264             if( !p_input->ppsz_options ) break;
 265         }
 266         p_input->ppsz_options[p_input->i_options] =
 267                     strdup( ppsz_options[p_input->i_options] );
 268     }
 269     return p_input;
 270 }
 271
 272 /* Guess the type of the item using the beginning of the mrl */
 273 static void GuessType( input_item_t *p_item)
 274 {
 275     int i;
 276     static struct { char *psz_search; int i_type; }  types_array[] =
 277     {
 278         { "http", ITEM_TYPE_NET },
 279         { "dvd", ITEM_TYPE_DISC },
 280         { "cdda", ITEM_TYPE_CDDA },
 281         { "mms", ITEM_TYPE_NET },
 282         { "rtsp", ITEM_TYPE_NET },
 283         { "udp", ITEM_TYPE_NET },
 284         { "rtp", ITEM_TYPE_NET },
 285         { "vcd", ITEM_TYPE_DISC },
 286         { "v4l", ITEM_TYPE_CARD },
 287         { "dshow", ITEM_TYPE_CARD },
 288         { "pvr", ITEM_TYPE_CARD },
 289         { "dvb", ITEM_TYPE_CARD },
 290         { "qpsk", ITEM_TYPE_CARD },
 291         { "sdp", ITEM_TYPE_NET },
 292         { NULL, 0 }
 293     };
 294
 295 #if 0 /* Unused */
 296     static struct { char *psz_search; int i_type; } exts_array[] =
 297     {
 298         { "mp3", ITEM_TYPE_AFILE },
 299         { NULL, 0 }
 300     };
 301 #endif
 302
 303     for( i = 0; types_array[i].psz_search != NULL; i++ )
 304     {
 305         if( !strncmp( p_item->psz_uri, types_array[i].psz_search,
 306                       strlen( types_array[i].psz_search ) ) )
 307         {
 308             p_item->i_type = types_array[i].i_type;
 309             return;
 310         }
 311     }
 312     p_item->i_type = ITEM_TYPE_VFILE;
 313 }