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 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27 #include <assert.h>
  28
  29 #include <vlc/vlc.h>
  30 #include "vlc_playlist.h"
  31 #include "vlc_interface.h"
  32
  33 #include "input_internal.h"
  34
  35 static void GuessType( input_item_t *p_item );
  36
  37 void input_item_SetMeta( input_item_t *p_i, vlc_meta_type_t meta_type, const char *psz_val )
  38 {
  39     vlc_event_t event;
  40
  41     vlc_mutex_lock( &p_i->lock );
  42     if( !p_i->p_meta )
  43         p_i->p_meta = vlc_meta_New();
  44     vlc_meta_Set( p_i->p_meta, meta_type, psz_val );
  45     vlc_mutex_unlock( &p_i->lock );
  46
  47     /* Notify interested third parties */
  48     event.type = vlc_InputItemMetaChanged;
  49     event.u.input_item_meta_changed.meta_type = meta_type;
  50     vlc_event_send( &p_i->event_manager, &event );
  51 }
  52
  53 /**
  54  * Get the item from an input thread
  55  */
  56 input_item_t *input_GetItem( input_thread_t *p_input )
  57 {
  58     assert( p_input && p_input->p );
  59     return p_input->p->input.p_item;
  60 }
  61
  62 /**
  63  * Get a info item from a given category in a given input item.
  64  *
  65  * \param p_i The input item to get info from
  66  * \param psz_cat String representing the category for the info
  67  * \param psz_name String representing the name of the desired info
  68  * \return A pointer to the string with the given info if found, or an
  69  *         empty string otherwise. The caller should free the returned
  70  *         pointer.
  71  */
  72 char *input_ItemGetInfo( input_item_t *p_i,
  73                               const char *psz_cat,
  74                               const char *psz_name )
  75 {
  76     int i,j;
  77
  78     vlc_mutex_lock( &p_i->lock );
  79
  80     for( i = 0 ; i< p_i->i_categories  ; i++ )
  81     {
  82         info_category_t *p_cat = p_i->pp_categories[i];
  83
  84         if( !psz_cat || strcmp( p_cat->psz_name, psz_cat ) )
  85             continue;
  86
  87         for( j = 0; j < p_cat->i_infos ; j++ )
  88         {
  89             if( !strcmp( p_cat->pp_infos[j]->psz_name, psz_name ) )
  90             {
  91                 char *psz_ret = strdup( p_cat->pp_infos[j]->psz_value );
  92                 vlc_mutex_unlock( &p_i->lock );
  93                 return psz_ret;
  94             }
  95         }
  96     }
  97     vlc_mutex_unlock( &p_i->lock );
  98     return strdup( "" );
  99 }
 100
 101 static void input_ItemDestroy ( gc_object_t *p_this )
 102 {
 103     vlc_object_t *p_obj = (vlc_object_t *)p_this->p_destructor_arg;
 104     input_item_t *p_input = (input_item_t *) p_this;
 105     int i;
 106
 107     input_ItemClean( p_input );
 108
 109     vlc_mutex_lock( &p_obj->p_libvlc->object_lock );
 110
 111     ARRAY_BSEARCH( p_obj->p_libvlc->input_items,->i_id, int, p_input->i_id, i);
 112     if( i != -1 )
 113         ARRAY_REMOVE( p_obj->p_libvlc->input_items, i);
 114
 115     vlc_mutex_unlock( &p_obj->p_libvlc->object_lock );
 116
 117     free( p_input );
 118 }
 119
 120 int input_ItemAddOpt( input_item_t *p_input, const char *psz_option,
 121                       unsigned flags )
 122 {
 123     int err = VLC_SUCCESS;
 124
 125     if( psz_option == NULL )
 126         return VLC_EGENERIC;
 127
 128     vlc_mutex_lock( &p_input->lock );
 129     if (flags & VLC_INPUT_OPTION_UNIQUE)
 130     {
 131         for (int i = 0 ; i < p_input->i_options; i++)
 132             if( !strcmp( p_input->ppsz_options[i], psz_option ) )
 133                 goto out;
 134     }
 135
 136     uint8_t *flagv = realloc (p_input->optflagv, p_input->optflagc + 1);
 137     if (flagv == NULL)
 138     {
 139         err = VLC_ENOMEM;
 140         goto out;
 141     }
 142     p_input->optflagv = flagv;
 143     flagv[p_input->optflagc++] = flags;
 144
 145     INSERT_ELEM( p_input->ppsz_options, p_input->i_options,
 146                  p_input->i_options, strdup( psz_option ) );
 147 out:
 148     vlc_mutex_unlock( &p_input->lock );
 149     return err;
 150 }
 151
 152 int input_ItemAddInfo( input_item_t *p_i,
 153                             const char *psz_cat,
 154                             const char *psz_name,
 155                             const char *psz_format, ... )
 156 {
 157     va_list args;
 158     int i;
 159     info_t *p_info = NULL;
 160     info_category_t *p_cat = NULL ;
 161
 162     vlc_mutex_lock( &p_i->lock );
 163
 164     for( i = 0 ; i < p_i->i_categories ; i ++ )
 165     {
 166         if( !strcmp( p_i->pp_categories[i]->psz_name, psz_cat ) )
 167         {
 168             p_cat = p_i->pp_categories[i];
 169             break;
 170         }
 171     }
 172     if( !p_cat )
 173     {
 174         if( !(p_cat = (info_category_t *)malloc( sizeof(info_category_t) )) )
 175         {
 176             vlc_mutex_unlock( &p_i->lock );
 177             return VLC_ENOMEM;
 178         }
 179         p_cat->psz_name = strdup( psz_cat );
 180         p_cat->i_infos = 0;
 181         p_cat->pp_infos = 0;
 182         INSERT_ELEM( p_i->pp_categories, p_i->i_categories, p_i->i_categories,
 183                      p_cat );
 184     }
 185
 186     for( i = 0; i< p_cat->i_infos; i++ )
 187     {
 188         if( !strcmp( p_cat->pp_infos[i]->psz_name, psz_name ) )
 189         {
 190             p_info = p_cat->pp_infos[i];
 191             break;
 192         }
 193     }
 194
 195     if( !p_info )
 196     {
 197         if( ( p_info = (info_t *)malloc( sizeof( info_t ) ) ) == NULL )
 198         {
 199             vlc_mutex_unlock( &p_i->lock );
 200             return VLC_ENOMEM;
 201         }
 202         INSERT_ELEM( p_cat->pp_infos, p_cat->i_infos, p_cat->i_infos, p_info );
 203         p_info->psz_name = strdup( psz_name );
 204     }
 205     else
 206     {
 207         free( p_info->psz_value );
 208     }
 209
 210     va_start( args, psz_format );
 211     if( vasprintf( &p_info->psz_value, psz_format, args) )
 212         p_info->psz_value = NULL;
 213     va_end( args );
 214
 215     vlc_mutex_unlock( &p_i->lock );
 216
 217     return p_info->psz_value ? VLC_SUCCESS : VLC_ENOMEM;
 218 }
 219
 220 input_item_t *__input_ItemGetById( vlc_object_t *p_obj, int i_id )
 221 {
 222     input_item_t * p_ret = NULL;
 223     int i;
 224
 225     vlc_mutex_lock( &p_obj->p_libvlc->object_lock );
 226
 227     ARRAY_BSEARCH( p_obj->p_libvlc->input_items, ->i_id, int, i_id, i);
 228     if( i != -1 )
 229         p_ret = ARRAY_VAL( p_obj->p_libvlc->input_items, i);
 230
 231     vlc_mutex_unlock( &p_obj->p_libvlc->object_lock );
 232
 233     return p_ret;
 234 }
 235
 236 input_item_t *__input_ItemNewExt( vlc_object_t *p_obj, const char *psz_uri,
 237                                   const char *psz_name,
 238                                   int i_options,
 239                                   const char *const *ppsz_options,
 240                                   mtime_t i_duration )
 241 {
 242     return input_ItemNewWithType( p_obj, psz_uri, psz_name,
 243                                   i_options, ppsz_options,
 244                                   i_duration, ITEM_TYPE_UNKNOWN );
 245 }
 246
 247
 248 input_item_t *input_ItemNewWithType( vlc_object_t *p_obj, const char *psz_uri,
 249                                 const char *psz_name,
 250                                 int i_options,
 251                                 const char *const *ppsz_options,
 252                                 mtime_t i_duration,
 253                                 int i_type )
 254 {
 255     DECMALLOC_NULL( p_input, input_item_t );
 256
 257     input_ItemInit( p_obj, p_input );
 258     vlc_gc_init( p_input, input_ItemDestroy, (void *)p_obj );
 259
 260     vlc_mutex_lock( &p_obj->p_libvlc->object_lock );
 261     p_input->i_id = ++p_obj->p_libvlc->i_last_input_id;
 262     ARRAY_APPEND( p_obj->p_libvlc->input_items, p_input );
 263     vlc_mutex_unlock( &p_obj->p_libvlc->object_lock );
 264
 265     p_input->b_fixed_name = VLC_FALSE;
 266
 267     if( psz_uri )
 268         p_input->psz_uri = strdup( psz_uri );
 269     else
 270         p_input->psz_uri = NULL;
 271
 272     p_input->i_type = i_type;
 273     p_input->b_prefers_tree = VLC_FALSE;
 274
 275     if( p_input->i_type == ITEM_TYPE_UNKNOWN )
 276         GuessType( p_input );
 277
 278     if( psz_name != NULL )
 279         p_input->psz_name = strdup( psz_name );
 280     else if( p_input->i_type == ITEM_TYPE_FILE && p_input->psz_uri )
 281     {
 282         const char *psz_filename = strrchr( p_input->psz_uri, DIR_SEP_CHAR );
 283         if( psz_filename && *psz_filename == DIR_SEP_CHAR )
 284             psz_filename++;
 285         p_input->psz_name = strdup( psz_filename && *psz_filename
 286                                     ? psz_filename : p_input->psz_uri );
 287     }
 288     else
 289         p_input->psz_name = p_input->psz_uri ? strdup( p_input->psz_uri ) : NULL;
 290
 291     p_input->i_duration = i_duration;
 292
 293     for( int i = 0; i < i_options; i++ )
 294         input_ItemAddOption( p_input, ppsz_options[i] );
 295     return p_input;
 296 }
 297
 298 /* Guess the type of the item using the beginning of the mrl */
 299 static void GuessType( input_item_t *p_item)
 300 {
 301     int i;
 302     static struct { const char *psz_search; int i_type; }  types_array[] =
 303     {
 304         { "http", ITEM_TYPE_NET },
 305         { "dvd", ITEM_TYPE_DISC },
 306         { "cdda", ITEM_TYPE_CDDA },
 307         { "mms", ITEM_TYPE_NET },
 308         { "rtsp", ITEM_TYPE_NET },
 309         { "udp", ITEM_TYPE_NET },
 310         { "rtp", ITEM_TYPE_NET },
 311         { "vcd", ITEM_TYPE_DISC },
 312         { "v4l", ITEM_TYPE_CARD },
 313         { "dshow", ITEM_TYPE_CARD },
 314         { "pvr", ITEM_TYPE_CARD },
 315         { "dvb", ITEM_TYPE_CARD },
 316         { "qpsk", ITEM_TYPE_CARD },
 317         { "sdp", ITEM_TYPE_NET },
 318         { NULL, 0 }
 319     };
 320
 321     if( !p_item->psz_uri )
 322     {
 323         p_item->i_type = ITEM_TYPE_FILE;
 324         return;
 325     }
 326
 327     for( i = 0; types_array[i].psz_search != NULL; i++ )
 328     {
 329         if( !strncmp( p_item->psz_uri, types_array[i].psz_search,
 330                       strlen( types_array[i].psz_search ) ) )
 331         {
 332             p_item->i_type = types_array[i].i_type;
 333             return;
 334         }
 335     }
 336     p_item->i_type = ITEM_TYPE_FILE;
 337 }