src/input/access.c

   1 /*****************************************************************************
   2  * access.c
   3  *****************************************************************************
   4  * Copyright (C) 1999-2008 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Author: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * 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
  28 #include "access.h"
  29 #include <libvlc.h>
  30 #include <vlc_url.h>
  31 #include <vlc_modules.h>
  32
  33 /* Decode URL (which has had its scheme stripped earlier) to a file path. */
  34 char *get_path(const char *location)
  35 {
  36     char *url, *path;
  37
  38     /* Prepending "file://" is a bit hackish. But then again, we do not want
  39      * to hard-code the list of schemes that use file paths in make_path().
  40      */
  41     if (asprintf(&url, "file://%s", location) == -1)
  42         return NULL;
  43
  44     path = make_path (url);
  45     free (url);
  46     return path;
  47 }
  48
  49 #undef access_New
  50 /*****************************************************************************
  51  * access_New:
  52  *****************************************************************************/
  53 access_t *access_New( vlc_object_t *p_obj, input_thread_t *p_parent_input,
  54                       const char *psz_access, const char *psz_demux,
  55                       const char *psz_location )
  56 {
  57     access_t *p_access = vlc_custom_create( p_obj, sizeof (*p_access),
  58                                             "access" );
  59
  60     if( p_access == NULL )
  61         return NULL;
  62
  63     /* */
  64
  65     p_access->p_input = p_parent_input;
  66
  67     p_access->psz_access = strdup( psz_access );
  68     p_access->psz_location = strdup( psz_location );
  69     p_access->psz_filepath = get_path( psz_location );
  70     p_access->psz_demux  = strdup( psz_demux );
  71     if( p_access->psz_access == NULL || p_access->psz_location == NULL
  72      || p_access->psz_demux == NULL )
  73         goto error;
  74
  75     msg_Dbg( p_obj, "creating access '%s' location='%s', path='%s'",
  76              psz_access, psz_location,
  77              p_access->psz_filepath ? p_access->psz_filepath : "(null)" );
  78
  79     p_access->pf_read    = NULL;
  80     p_access->pf_block   = NULL;
  81     p_access->pf_seek    = NULL;
  82     p_access->pf_control = NULL;
  83     p_access->p_sys      = NULL;
  84
  85     access_InitFields( p_access );
  86
  87     p_access->p_module = module_need( p_access, "access", psz_access, true );
  88     if( p_access->p_module == NULL )
  89         goto error;
  90
  91     return p_access;
  92
  93 error:
  94     free( p_access->psz_access );
  95     free( p_access->psz_location );
  96     free( p_access->psz_filepath );
  97     free( p_access->psz_demux );
  98     vlc_object_release( p_access );
  99     return NULL;
 100 }
 101
 102 /*****************************************************************************
 103  * access_Delete:
 104  *****************************************************************************/
 105 void access_Delete( access_t *p_access )
 106 {
 107     module_unneed( p_access, p_access->p_module );
 108
 109     free( p_access->psz_access );
 110     free( p_access->psz_location );
 111     free( p_access->psz_filepath );
 112     free( p_access->psz_demux );
 113
 114     vlc_object_release( p_access );
 115 }
 116
 117
 118 /*****************************************************************************
 119  * access_GetParentInput:
 120  *****************************************************************************/
 121 input_thread_t * access_GetParentInput( access_t *p_access )
 122 {
 123     return p_access->p_input ? vlc_object_hold((vlc_object_t *)p_access->p_input) : NULL;
 124 }
 125