1 /*****************************************************************************
2 * media_descriptor.c: Libvlc API media descriport management
3 *****************************************************************************
4 * Copyright (C) 2007 the VideoLAN team
7 * Authors: Pierre d'Herbemont <pdherbemont@videolan.org>
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.
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.
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 *****************************************************************************/
24 #include <vlc/libvlc.h>
25 #include <vlc_input.h>
28 #include "libvlc_internal.h"
31 /**************************************************************************
32 * Preparse if not already done (Private)
33 **************************************************************************/
34 static void preparse_if_needed( libvlc_media_descriptor_t *p_md )
36 /* XXX: need some locking here */
37 if (!p_md->b_preparsed)
39 input_Preparse( p_md->p_libvlc_instance->p_libvlc_int,
41 p_md->b_preparsed = VLC_TRUE;
45 /**************************************************************************
46 * Create a new media descriptor object
47 **************************************************************************/
48 libvlc_media_descriptor_t * libvlc_media_descriptor_new(
49 libvlc_instance_t *p_instance,
51 libvlc_exception_t *p_e )
53 input_item_t * p_input_item;
54 libvlc_media_descriptor_t * p_md;
56 p_input_item = input_ItemNew( p_instance->p_libvlc_int, psz_mrl, psz_mrl );
60 libvlc_exception_raise( p_e, "Can't create md's input_item" );
64 p_md = malloc( sizeof(libvlc_media_descriptor_t) );
65 p_md->p_libvlc_instance = p_instance;
66 p_md->p_input_item = p_input_item;
67 p_md->b_preparsed = VLC_FALSE;
70 vlc_gc_incref( p_md->p_input_item );
75 /**************************************************************************
76 * Create a new media descriptor object from an input_item
78 **************************************************************************/
79 libvlc_media_descriptor_t * libvlc_media_descriptor_new_from_input_item(
80 libvlc_instance_t *p_instance,
81 input_item_t *p_input_item,
82 libvlc_exception_t *p_e )
84 libvlc_media_descriptor_t * p_md;
88 libvlc_exception_raise( p_e, "No input item given" );
92 p_md = malloc( sizeof(libvlc_media_descriptor_t) );
93 p_md->p_libvlc_instance = p_instance;
94 p_md->p_input_item = p_input_item;
95 p_md->b_preparsed = VLC_TRUE;
98 vlc_gc_incref( p_md->p_input_item );
103 /**************************************************************************
104 * Delete a media descriptor object
105 **************************************************************************/
106 void libvlc_media_descriptor_release( libvlc_media_descriptor_t *p_md )
114 vlc_gc_decref( p_md->p_input_item );
116 if( p_md->i_refcount > 0 )
122 /**************************************************************************
123 * Retain a media descriptor object
124 **************************************************************************/
125 void libvlc_media_descriptor_retain( libvlc_media_descriptor_t *p_md )
133 vlc_gc_incref( p_md->p_input_item );
136 /**************************************************************************
137 * Duplicate a media descriptor object
138 **************************************************************************/
139 libvlc_media_descriptor_t *
140 libvlc_media_descriptor_duplicate( libvlc_media_descriptor_t *p_md_orig )
142 libvlc_media_descriptor_t * p_md;
144 p_md = malloc( sizeof(libvlc_media_descriptor_t) );
145 memcpy( p_md, p_md_orig, sizeof(libvlc_media_descriptor_t) );
147 vlc_gc_incref( p_md->p_input_item );
152 /**************************************************************************
153 * Getter for meta information
154 **************************************************************************/
155 static const int meta_conversion[] =
157 [libvlc_meta_Title] = 0, /* Offset in the vlc_meta_t structure */
158 [libvlc_meta_Artist] = 1
161 char * libvlc_media_descriptor_get_meta( libvlc_media_descriptor_t *p_md,
162 libvlc_meta_t e_meta,
163 libvlc_exception_t *p_e )
170 preparse_if_needed( p_md );
172 ppsz_meta = (char**)p_md->p_input_item->p_meta;
173 ppz_meta = ppsz_meta[ meta_conversion[e_meta] ];
178 return strdup( ppz_meta );