shout.c: fixed shoutcast discovery (added www. to hostname)
[vlc.git] / modules / services_discovery / shout.c
1 /*****************************************************************************
2  * shout.c:  Shoutcast services discovery module
3  *****************************************************************************
4  * Copyright (C) 2005 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
22  *****************************************************************************/
23
24 /*****************************************************************************
25  * Includes
26  *****************************************************************************/
27 #include <stdlib.h>                                      /* malloc(), free() */
28
29 #include <vlc/vlc.h>
30 #include <vlc/intf.h>
31
32 #include <vlc/input.h>
33
34 #include "network.h"
35
36 #include <errno.h>                                                 /* ENOMEM */
37
38 #ifdef HAVE_UNISTD_H
39 #    include <unistd.h>
40 #endif
41 #ifdef HAVE_SYS_TIME_H
42 #    include <sys/time.h>
43 #endif
44
45 /************************************************************************
46  * Macros and definitions
47  ************************************************************************/
48
49 #define MAX_LINE_LENGTH 256
50
51
52 /*****************************************************************************
53  * Module descriptor
54  *****************************************************************************/
55
56 /* Callbacks */
57     static int  Open ( vlc_object_t * );
58     static void Close( vlc_object_t * );
59
60 #define LIMIT_TEXT N_("Maximum number of shoutcast servers to be listed")
61 #define LIMIT_LONGTEXT LIMIT_TEXT
62
63 vlc_module_begin();
64     set_shortname( "Shoutcast");
65     set_description( _("Shoutcast radio listings") );
66     set_category( CAT_PLAYLIST );
67     set_subcategory( SUBCAT_PLAYLIST_SD );
68
69     add_integer( "shoutcast-limit", 1000, NULL, LIMIT_TEXT,
70                     LIMIT_LONGTEXT, VLC_TRUE );
71
72     set_capability( "services_discovery", 0 );
73     set_callbacks( Open, Close );
74
75 vlc_module_end();
76
77
78 /*****************************************************************************
79  * Local structures
80  *****************************************************************************/
81
82 struct services_discovery_sys_t
83 {
84     /* playlist node */
85     playlist_item_t *p_node;
86     input_thread_t *p_input;
87
88 };
89
90 /*****************************************************************************
91  * Local prototypes
92  *****************************************************************************/
93
94 /* Main functions */
95     static void Run    ( services_discovery_t *p_intf );
96
97 /*****************************************************************************
98  * Open: initialize and create stuff
99  *****************************************************************************/
100 static int Open( vlc_object_t *p_this )
101 {
102     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
103     services_discovery_sys_t *p_sys  = malloc(
104                                     sizeof( services_discovery_sys_t ) );
105
106     vlc_value_t         val;
107     playlist_t          *p_playlist;
108     playlist_view_t     *p_view;
109     playlist_item_t     *p_item;
110
111     int i_limit;
112     char *psz_shoutcast_url;
113     char *psz_shoutcast_title;
114
115     p_sd->pf_run = Run;
116     p_sd->p_sys  = p_sys;
117
118     /* Create our playlist node */
119     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
120                                                 FIND_ANYWHERE );
121     if( !p_playlist )
122     {
123         msg_Warn( p_sd, "unable to find playlist, cancelling");
124         return VLC_EGENERIC;
125     }
126
127     i_limit = config_GetInt( p_this->p_libvlc, "shoutcast-limit" );
128     #define SHOUTCAST_BASE_URL "http/shout-b4s://www.shoutcast.com/sbin/xmllister.phtml?service=vlc&no_compress=1&limit="
129     psz_shoutcast_url = (char *)malloc( strlen( SHOUTCAST_BASE_URL ) + 20 );
130     psz_shoutcast_title = (char *)malloc( 6 + 20 );
131
132     sprintf( psz_shoutcast_url, SHOUTCAST_BASE_URL "%d", i_limit );
133     sprintf( psz_shoutcast_title, "Top %d", i_limit );
134
135     p_view = playlist_ViewFind( p_playlist, VIEW_CATEGORY );
136     p_sys->p_node = playlist_NodeCreate( p_playlist, VIEW_CATEGORY,
137                                          _("Shoutcast"), p_view->p_root );
138     p_item = playlist_ItemNew( p_playlist, psz_shoutcast_url,
139                                      psz_shoutcast_title );
140     free( psz_shoutcast_url );
141     free( psz_shoutcast_title );
142     playlist_NodeAddItem( p_playlist, p_item,
143                           p_sys->p_node->pp_parents[0]->i_view,
144                           p_sys->p_node, PLAYLIST_APPEND,
145                           PLAYLIST_END );
146
147     /* We need to declare the parents of the node as the same of the
148      * parent's ones */
149     playlist_CopyParents( p_sys->p_node, p_item );
150     
151
152     p_sys->p_input = input_CreateThread( p_playlist, &p_item->input );
153
154     p_sys->p_node->i_flags |= PLAYLIST_RO_FLAG;
155     val.b_bool = VLC_TRUE;
156     var_Set( p_playlist, "intf-change", val );
157
158     vlc_object_release( p_playlist );
159
160     return VLC_SUCCESS;
161 }
162
163 /*****************************************************************************
164  * Close:
165  *****************************************************************************/
166 static void Close( vlc_object_t *p_this )
167 {
168     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
169     services_discovery_sys_t *p_sys  = p_sd->p_sys;
170     playlist_t *p_playlist =  (playlist_t *) vlc_object_find( p_sd,
171                                  VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );
172     if( p_sd->p_sys->p_input )
173     {
174         input_StopThread( p_sd->p_sys->p_input );
175         input_DestroyThread( p_sd->p_sys->p_input );
176         vlc_object_detach( p_sd->p_sys->p_input );
177         vlc_object_destroy( p_sd->p_sys->p_input );
178         p_sd->p_sys->p_input = NULL;        
179     }
180     if( p_playlist )
181     {
182         playlist_NodeDelete( p_playlist, p_sys->p_node, VLC_TRUE, VLC_TRUE );
183         vlc_object_release( p_playlist );
184     }
185     free( p_sys );
186 }
187
188 /*****************************************************************************
189  * Run: main thread
190  *****************************************************************************/
191 static void Run( services_discovery_t *p_sd )
192 {
193     while( !p_sd->b_die )
194     {
195         if( p_sd->p_sys->p_input &&
196             ( p_sd->p_sys->p_input->b_eof || p_sd->p_sys->p_input->b_error ) )
197         {
198             input_StopThread( p_sd->p_sys->p_input );
199             input_DestroyThread( p_sd->p_sys->p_input );
200             vlc_object_detach( p_sd->p_sys->p_input );
201             vlc_object_destroy( p_sd->p_sys->p_input );
202             p_sd->p_sys->p_input = NULL;
203         }
204         msleep( 100000 );
205     }
206 }