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[vlc] / src / playlist / loadsave.c
1 /*****************************************************************************
2  * loadsave.c : Playlist loading / saving functions
3  *****************************************************************************
4  * Copyright (C) 1999-2004 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Samuel Hocevar <sam@zoy.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 #include <vlc/vlc.h>
24 #include <vlc/input.h>
25 #include "vlc_playlist.h"
26 #include "playlist_internal.h"
27 #include "charset.h"
28 #include <errno.h>
29
30 /**
31  * Import a playlist file at a given point of a given view
32  * \param p_playlist the playlist to which the new items will be added
33  * \param psz_filename the name of the playlistfile to import
34  * \return VLC_SUCCESS on success
35  */
36 int playlist_Import( playlist_t * p_playlist, const char *psz_filename,
37                      playlist_item_t *p_root, vlc_bool_t b_only_there )
38 {
39     char *psz_uri, *psz_opt;
40     input_item_t *p_input;
41
42     asprintf( &psz_uri, "file/playlist://%s", psz_filename );
43     p_input = input_ItemNewExt( p_playlist, psz_uri, "playlist", 0, NULL, -1 );
44     if( b_only_there )
45     {
46         asprintf( &psz_opt, "parent-item=%i", p_root->i_id );
47         input_ItemAddOption( p_input, psz_opt );
48         free( psz_opt );
49     }
50     playlist_PlaylistAddInput( p_playlist, p_input, PLAYLIST_APPEND,
51                                PLAYLIST_END );
52     input_Read( p_playlist, p_input, VLC_TRUE );
53     free( psz_uri );
54     return VLC_SUCCESS;
55 }
56
57 /**
58  * Export a node of the playlist to a certain type of playlistfile
59  *
60  * \param p_playlist the playlist to export
61  * \param psz_filename the location where the exported file will be saved
62  * \param p_export_root the root node to export
63  * \param psz_type the type of playlist file to create.
64  * \return VLC_SUCCESS on success
65  */
66 int playlist_Export( playlist_t * p_playlist, const char *psz_filename ,
67                      playlist_item_t *p_export_root,const char *psz_type )
68 {
69     module_t *p_module;
70     playlist_export_t *p_export;
71
72     if( p_export_root == NULL ) return VLC_EGENERIC;
73
74     msg_Info( p_playlist, "saving %s to file %s",
75                     p_export_root->p_input->psz_name, psz_filename );
76
77     /* Prepare the playlist_export_t structure */
78     p_export = (playlist_export_t *)malloc( sizeof(playlist_export_t) );
79     if( !p_export)
80     {
81         msg_Err( p_playlist, "out of memory" );
82         return VLC_ENOMEM;
83     }
84     p_export->psz_filename = NULL;
85     if ( psz_filename )
86         p_export->psz_filename = strdup( psz_filename );
87     p_export->p_file = utf8_fopen( psz_filename, "wt" );
88     if( !p_export->p_file )
89     {
90         msg_Err( p_playlist , "could not create playlist file %s"
91                  " (%s)", psz_filename, strerror(errno) );
92         return VLC_EGENERIC;
93     }
94
95     p_export->p_root = p_export_root;
96
97     /* Lock the playlist */
98     vlc_mutex_lock( &p_playlist->object_lock );
99     p_playlist->p_private = (void *)p_export;
100
101     /* And call the module ! All work is done now */
102     p_module = module_Need( p_playlist, "playlist export", psz_type, VLC_TRUE);
103     if( !p_module )
104     {
105         msg_Warn( p_playlist, "exporting playlist failed" );
106         vlc_mutex_unlock( &p_playlist->object_lock );
107         return VLC_ENOOBJ;
108     }
109     module_Unneed( p_playlist , p_module );
110
111     /* Clean up */
112     fclose( p_export->p_file );
113     if ( p_export->psz_filename )
114         free( p_export->psz_filename );
115     free ( p_export );
116     p_playlist->p_private = NULL;
117     vlc_mutex_unlock( &p_playlist->object_lock );
118
119     return VLC_SUCCESS;
120 }
121
122 int playlist_MLLoad( playlist_t *p_playlist )
123 {
124     char *psz_uri, *psz_homedir =p_playlist->p_libvlc->psz_homedir;
125     input_item_t *p_input;
126
127     if( !config_GetInt( p_playlist, "media-library") ) return VLC_SUCCESS;
128     if( !psz_homedir )
129     {
130         msg_Err( p_playlist, "no home directory, cannot load media library") ;
131         return VLC_EGENERIC;
132     }
133     asprintf( &psz_uri, "file/xspf-open://%s" DIR_SEP CONFIG_DIR DIR_SEP
134                         "ml.xsp", psz_homedir );
135
136     p_input = input_ItemNewExt( p_playlist, psz_uri,
137                                 _("Media Library"), 0, NULL, -1 );
138     p_playlist->p_ml_category->p_input = p_input;
139     p_playlist->p_ml_onelevel->p_input = p_input;
140
141     p_playlist->b_doing_ml = VLC_TRUE;
142     stats_TimerStart( p_playlist, "ML Load", STATS_TIMER_ML_LOAD );
143     input_Read( p_playlist, p_input, VLC_TRUE );
144     stats_TimerStop( p_playlist,STATS_TIMER_ML_LOAD );
145     p_playlist->b_doing_ml = VLC_FALSE;
146
147     free( psz_uri );
148     return VLC_SUCCESS;
149 }
150
151 int playlist_MLDump( playlist_t *p_playlist )
152 {
153     char *psz_uri, *psz_homedir =p_playlist->p_libvlc->psz_homedir;
154     if( !config_GetInt( p_playlist, "media-library") ) return VLC_SUCCESS;
155     if( !psz_homedir )
156     {
157         msg_Err( p_playlist, "no home directory, cannot load media library") ;
158         return VLC_EGENERIC;
159     }
160     asprintf( &psz_uri, "%s" DIR_SEP CONFIG_DIR DIR_SEP
161                         "ml.xsp",  psz_homedir );
162     stats_TimerStart( p_playlist, "ML Dump", STATS_TIMER_ML_DUMP );
163     playlist_Export( p_playlist, psz_uri, p_playlist->p_ml_category,
164                      "export-xspf" );
165     stats_TimerStop( p_playlist, STATS_TIMER_ML_DUMP );
166
167     free( psz_uri );
168     return VLC_SUCCESS;
169 }