Fix a bug with preferences
[vlc.git] / modules / services_discovery / hal.c
1 /*****************************************************************************
2  * sap.c :  SAP interface module
3  *****************************************************************************
4  * Copyright (C) 2004 VideoLAN
5  * $Id: sap.c 9217 2004-11-07 11:02:59Z courmisch $
6  *
7  * Authors: ClĂ©ment 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., 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 #include <hal/libhal.h>
46
47 /************************************************************************
48  * Macros and definitions
49  ************************************************************************/
50
51 #define MAX_LINE_LENGTH 256
52
53
54 /*****************************************************************************
55  * Module descriptor
56  *****************************************************************************/
57
58 /* Callbacks */
59     static int  Open ( vlc_object_t * );
60     static void Close( vlc_object_t * );
61
62 vlc_module_begin();
63     set_description( _("HAL device detection") );
64     set_category( CAT_PLAYLIST );
65     set_subcategory( SUBCAT_PLAYLIST_SD );
66
67     set_capability( "services_discovery", 0 );
68     set_callbacks( Open, Close );
69
70 vlc_module_end();
71
72
73 /*****************************************************************************
74  * Local structures
75  *****************************************************************************/
76
77 struct services_discovery_sys_t
78 {
79     LibHalContext *p_ctx;
80
81     /* playlist node */
82     playlist_item_t *p_node;
83
84 };
85
86 /*****************************************************************************
87  * Local prototypes
88  *****************************************************************************/
89
90 /* Main functions */
91     static void Run    ( services_discovery_t *p_intf );
92
93 /*****************************************************************************
94  * Open: initialize and create stuff
95  *****************************************************************************/
96 static int Open( vlc_object_t *p_this )
97 {
98     services_discovery_t *p_sd = ( services_discovery_t* )p_this;
99     services_discovery_sys_t *p_sys  = malloc(
100                                     sizeof( services_discovery_sys_t ) );
101
102     playlist_t          *p_playlist;
103     playlist_view_t     *p_view;
104
105     p_sd->pf_run = Run;
106     p_sd->p_sys  = p_sys;
107
108     if( !( p_sys->p_ctx = hal_initialize( NULL, FALSE ) ) )
109     {
110         free( p_sys );
111         msg_Err( p_sd, "hal not available" );
112         return VLC_EGENERIC;
113     }
114
115     /* Create our playlist node */
116     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
117                                                 FIND_ANYWHERE );
118     if( !p_playlist )
119     {
120         msg_Warn( p_sd, "unable to find playlist, cancelling HAL listening");
121         return VLC_EGENERIC;
122     }
123
124     p_view = playlist_ViewFind( p_playlist, VIEW_CATEGORY );
125     p_sys->p_node = playlist_NodeCreate( p_playlist, VIEW_CATEGORY,
126                                          _("Devices"), p_view->p_root );
127     vlc_object_release( p_playlist );
128
129     return VLC_SUCCESS;
130 }
131
132 /*****************************************************************************
133  * Close:
134  *****************************************************************************/
135 static void Close( vlc_object_t *p_this )
136 {
137     services_discovery_t *p_sd = ( services_discovery_t* )p_sd;
138     services_discovery_sys_t *p_sys  = malloc(
139                                          sizeof( services_discovery_sys_t ) );
140     free( p_sys );
141 }
142
143 static void AddDvd( services_discovery_t *p_sd, char *psz_device )
144 {
145     char *psz_name;
146     char *psz_uri;
147     char *psz_blockdevice;
148     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
149     playlist_t          *p_playlist;
150     playlist_item_t     *p_item;
151     psz_name = hal_device_get_property_string( p_sd->p_sys->p_ctx,
152                                                psz_device, "volume.label" );
153     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
154                                                  psz_device, "block.device" );
155     asprintf( &psz_uri, "dvd://%s", psz_blockdevice );
156     /* Create the playlist item here */
157     p_item = playlist_ItemNew( p_sd, psz_uri,
158                                psz_name );
159     free( psz_uri );
160     hal_free_string( psz_device );
161     if( !p_item )
162     {
163         return;
164     }
165     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
166     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
167                                                 FIND_ANYWHERE );
168     if( !p_playlist )
169     {
170         msg_Err( p_sd, "playlist not found" );
171         return;
172     }
173
174     playlist_NodeAddItem( p_playlist, p_item, VIEW_CATEGORY, p_sys->p_node,
175                           PLAYLIST_APPEND, PLAYLIST_END );
176
177     vlc_object_release( p_playlist );
178 }
179
180 static void AddCdda( services_discovery_t *p_sd, char *psz_device )
181 {
182     char *psz_name = "Audio CD";
183     char *psz_uri;
184     char *psz_blockdevice;
185     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
186     playlist_t          *p_playlist;
187     playlist_item_t     *p_item;
188     psz_blockdevice = hal_device_get_property_string( p_sd->p_sys->p_ctx,
189                                                  psz_device, "block.device" );
190     asprintf( &psz_uri, "cdda://%s", psz_blockdevice );
191     /* Create the playlist item here */
192     p_item = playlist_ItemNew( p_sd, psz_uri,
193                                psz_name );
194     free( psz_uri );
195     hal_free_string( psz_device );
196     if( !p_item )
197     {
198         return;
199     }
200     p_item->i_flags &= ~PLAYLIST_SKIP_FLAG;
201     p_playlist = (playlist_t *)vlc_object_find( p_sd, VLC_OBJECT_PLAYLIST,
202                                                 FIND_ANYWHERE );
203     if( !p_playlist )
204     {
205         msg_Err( p_sd, "playlist not found" );
206         return;
207     }
208
209     playlist_NodeAddItem( p_playlist, p_item, VIEW_CATEGORY, p_sys->p_node,
210                           PLAYLIST_APPEND, PLAYLIST_END );
211
212     vlc_object_release( p_playlist );
213
214 }
215
216 static void ParseDevice( services_discovery_t *p_sd, char *psz_device )
217 {
218     char *psz_disc_type;
219     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
220     if( hal_device_property_exists( p_sys->p_ctx, psz_device,
221                                     "volume.disc.type" ) )
222     {
223         psz_disc_type = hal_device_get_property_string( p_sys->p_ctx,
224                                                         psz_device,
225                                                         "volume.disc.type" );
226         if( !strcmp( psz_disc_type, "dvd_rom" ) )
227         {
228             AddDvd( p_sd, psz_device );
229         }
230         else if( !strcmp( psz_disc_type, "cd_rom" ) )
231         {
232             if( hal_device_get_property_bool( p_sys->p_ctx, psz_device, "volume.disc.has_audio" ) )
233             {
234                 AddCdda( p_sd, psz_device );
235             }
236         }
237         hal_free_string( psz_disc_type );
238     }
239 }
240
241 /*****************************************************************************
242  * Run: main HAL thread
243  *****************************************************************************/
244 static void Run( services_discovery_t *p_sd )
245 {
246     int i, i_devices;
247     char **devices;
248     services_discovery_sys_t    *p_sys  = p_sd->p_sys;
249
250     /* parse existing devices first */
251     if( ( devices = hal_get_all_devices( p_sys->p_ctx, &i_devices ) ) )
252     {
253         for( i = 0; i < i_devices; i++ )
254         {
255             ParseDevice( p_sd, devices[ i ] );
256         }
257     }
258
259     while( !p_sd->b_die )
260     {
261         msleep( 100000 );
262     }
263 }