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 *vlc_input_item_GetInfo( 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 vlc_input_item_Destroy ( 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     vlc_input_item_Clean( 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 int vlc_input_item_AddInfo( input_item_t *p_i,
  93                             const char *psz_cat,
  94                             const char *psz_name,
  95                             const char *psz_format, ... )
  96 {
  97     va_list args;
  98     int i;
  99     info_t *p_info = NULL;
 100     info_category_t *p_cat = NULL ;
 101
 102     vlc_mutex_lock( &p_i->lock );
 103
 104     for( i = 0 ; i < p_i->i_categories ; i ++ )
 105     {
 106         if( !strcmp( p_i->pp_categories[i]->psz_name, psz_cat ) )
 107         {
 108             p_cat = p_i->pp_categories[i];
 109             break;
 110         }
 111     }
 112     if( !p_cat )
 113     {
 114         if( !(p_cat = (info_category_t *)malloc( sizeof(info_category_t) )) )
 115         {
 116             vlc_mutex_unlock( &p_i->lock );
 117             return VLC_EGENERIC;
 118         }
 119         p_cat->psz_name = strdup( psz_cat );
 120         p_cat->i_infos = 0;
 121         p_cat->pp_infos = 0;
 122         INSERT_ELEM( p_i->pp_categories, p_i->i_categories, p_i->i_categories,
 123                      p_cat );
 124     }
 125
 126     for( i = 0; i< p_cat->i_infos; i++ )
 127     {
 128         if( !strcmp( p_cat->pp_infos[i]->psz_name, psz_name ) )
 129         {
 130             p_info = p_cat->pp_infos[i];
 131             break;
 132         }
 133     }
 134
 135     if( !p_info )
 136     {
 137         if( ( p_info = (info_t *)malloc( sizeof( info_t ) ) ) == NULL )
 138         {
 139             vlc_mutex_unlock( &p_i->lock );
 140             return VLC_EGENERIC;
 141         }
 142         INSERT_ELEM( p_cat->pp_infos, p_cat->i_infos, p_cat->i_infos, p_info );
 143         p_info->psz_name = strdup( psz_name );
 144     }
 145     else
 146     {
 147         if( p_info->psz_value ) free( p_info->psz_value );
 148     }
 149
 150     va_start( args, psz_format );
 151     vasprintf( &p_info->psz_value, psz_format, args);
 152     va_end( args );
 153
 154     vlc_mutex_unlock( &p_i->lock );
 155
 156     return VLC_SUCCESS;
 157 }
 158
 159 void vlc_input_item_AddOption( input_item_t *p_input,
 160                               const char *psz_option )
 161 {
 162     if( !psz_option ) return;
 163     vlc_mutex_lock( &p_input->lock );
 164     INSERT_ELEM( p_input->ppsz_options, p_input->i_options,
 165                  p_input->i_options, strdup( psz_option ) );
 166     vlc_mutex_unlock( &p_input->lock );
 167 };
 168
 169
 170 input_item_t *input_ItemGetById( playlist_t *p_playlist, int i_id )
 171 {
 172     int i, i_top, i_bottom;
 173     i_bottom = 0; i_top = p_playlist->i_input_items -1;
 174     i = i_top  /2 ;
 175     while( p_playlist->pp_input_items[i]->i_id != i_id &&
 176            i_top > i_bottom )
 177     {
 178         if( p_playlist->pp_input_items[i]->i_id < i_id )
 179             i_bottom = i + 1;
 180         else
 181             i_top = i - 1;
 182         i = i_bottom + ( i_top - i_bottom ) / 2;
 183     }
 184     if( p_playlist->pp_input_items[i]->i_id == i_id )
 185     {
 186         return p_playlist->pp_input_items[i];
 187     }
 188     return NULL;
 189 }
 190
 191 input_item_t *__input_ItemNewExt( vlc_object_t *p_obj, const char *psz_uri,
 192                                   const char *psz_name, int i_options,
 193                                   const char **ppsz_options, int i_duration )
 194 {
 195     return input_ItemNewWithType( p_obj, psz_uri, psz_name,
 196                                   i_options, ppsz_options,
 197                                   i_duration, ITEM_TYPE_UNKNOWN );
 198 }
 199
 200
 201 input_item_t *input_ItemNewWithType( vlc_object_t *p_obj, const char *psz_uri,
 202                                 const char *psz_name, int i_options,
 203                                 const char **ppsz_options, int i_duration,
 204                                 int i_type )
 205 {
 206     playlist_t *p_playlist = pl_Yield( p_obj );
 207     DECMALLOC_NULL( p_input, input_item_t );
 208
 209     vlc_input_item_Init( p_obj, p_input );
 210     vlc_gc_init( p_input, vlc_input_item_Destroy, (void *)p_obj );
 211
 212     PL_LOCK;
 213     p_input->i_id = ++p_playlist->i_last_input_id;
 214     TAB_APPEND( p_playlist->i_input_items,
 215                 p_playlist->pp_input_items,
 216                 p_input );
 217     PL_UNLOCK;
 218     pl_Release( p_obj );
 219
 220     p_input->b_fixed_name = VLC_FALSE;
 221
 222     if( psz_uri )
 223         p_input->psz_uri = strdup( psz_uri );
 224     else
 225         p_input->psz_uri = NULL;
 226
 227     if( psz_name != NULL )
 228         p_input->psz_name = strdup( psz_name );
 229     else
 230         p_input->psz_name = strdup ( p_input->psz_uri );
 231
 232     p_input->i_type = i_type;
 233     p_input->b_prefers_tree = VLC_FALSE;
 234
 235     if( p_input->i_type == ITEM_TYPE_UNKNOWN )
 236         GuessType( p_input );
 237
 238     p_input->i_duration = i_duration;
 239     p_input->ppsz_options = NULL;
 240
 241     for( p_input->i_options = 0; p_input->i_options < i_options;
 242          p_input->i_options++ )
 243     {
 244         if( !p_input->i_options )
 245         {
 246             p_input->ppsz_options = malloc( i_options * sizeof(char *) );
 247             if( !p_input->ppsz_options ) break;
 248         }
 249         p_input->ppsz_options[p_input->i_options] =
 250                     strdup( ppsz_options[p_input->i_options] );
 251     }
 252     return p_input;
 253 }
 254
 255 /* Guess the type of the item using the beginning of the mrl */
 256 static void GuessType( input_item_t *p_item)
 257 {
 258     int i;
 259     static struct { char *psz_search; int i_type; }  types_array[] =
 260     {
 261         { "http", ITEM_TYPE_NET },
 262         { "dvd", ITEM_TYPE_DISC },
 263         { "cdda", ITEM_TYPE_CDDA },
 264         { "mms", ITEM_TYPE_NET },
 265         { "rtsp", ITEM_TYPE_NET },
 266         { "udp", ITEM_TYPE_NET },
 267         { "rtp", ITEM_TYPE_NET },
 268         { "vcd", ITEM_TYPE_DISC },
 269         { "v4l", ITEM_TYPE_CARD },
 270         { "dshow", ITEM_TYPE_CARD },
 271         { "pvr", ITEM_TYPE_CARD },
 272         { "dvb", ITEM_TYPE_CARD },
 273         { "qpsk", ITEM_TYPE_CARD },
 274         { "sdp", ITEM_TYPE_NET },
 275         { NULL, 0 }
 276     };
 277
 278 #if 0 /* Unused */
 279     static struct { char *psz_search; int i_type; } exts_array[] =
 280     {
 281         { "mp3", ITEM_TYPE_AFILE },
 282         { NULL, 0 }
 283     };
 284 #endif
 285
 286     for( i = 0; types_array[i].psz_search != NULL; i++ )
 287     {
 288         if( !strncmp( p_item->psz_uri, types_array[i].psz_search,
 289                       strlen( types_array[i].psz_search ) ) )
 290         {
 291             p_item->i_type = types_array[i].i_type;
 292             return;
 293         }
 294     }
 295     p_item->i_type = ITEM_TYPE_VFILE;
 296 }