1 /*****************************************************************************
2 * hal.c : HAL interface module
3 *****************************************************************************
4 * Copyright (C) 2004 the VideoLAN team
5 * Copyright © 2006-2007 Rafaël Carré
8 * Authors: Clément Stenac <zorglub@videolan.org>
9 * Rafaël Carré <funman at videolanorg>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
30 #include <vlc_common.h>
31 #include <vlc_plugin.h>
32 #include <vlc_playlist.h>
33 #include <vlc_services_discovery.h>
35 #include <vlc_network.h>
37 #include <errno.h> /* ENOMEM */
42 #ifdef HAVE_SYS_TIME_H
43 # include <sys/time.h>
46 #include <hal/libhal.h>
48 #define MAX_LINE_LENGTH 256
50 /*****************************************************************************
52 *****************************************************************************/
54 /* store relation between item id and udi for ejection */
61 struct services_discovery_sys_t
65 DBusConnection *p_connection;
67 struct udi_input_id_t **pp_devices;
69 static void *Run ( void * );
70 static int Open ( vlc_object_t * );
71 static void Close( vlc_object_t * );
74 void DeviceAdded( LibHalContext *p_ctx, const char *psz_udi );
75 void DeviceRemoved( LibHalContext *p_ctx, const char *psz_udi );
77 /* to retrieve p_sd in HAL callbacks */
78 services_discovery_t *p_sd_global;
80 /*****************************************************************************
82 *****************************************************************************/
84 set_description( N_("HAL devices detection") )
85 set_category( CAT_PLAYLIST )
86 set_subcategory( SUBCAT_PLAYLIST_SD )
88 set_capability( "services_discovery", 0 )
89 set_callbacks( Open, Close )
94 /*****************************************************************************
95 * Open: initialize and create stuff
96 *****************************************************************************/
97 static int Open( vlc_object_t *p_this )
99 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
100 services_discovery_sys_t *p_sys = malloc(
101 sizeof( services_discovery_sys_t ) );
105 DBusError dbus_error;
106 DBusConnection *p_connection = NULL;
109 p_sys->i_devices_number = 0;
110 p_sys->pp_devices = NULL;
114 dbus_error_init( &dbus_error );
116 p_sys->p_ctx = libhal_ctx_new();
119 msg_Err( p_sd, "unable to create HAL context") ;
123 p_connection = dbus_bus_get( DBUS_BUS_SYSTEM, &dbus_error );
124 if( dbus_error_is_set( &dbus_error ) )
126 msg_Err( p_sd, "unable to connect to DBUS: %s", dbus_error.message );
129 libhal_ctx_set_dbus_connection( p_sys->p_ctx, p_connection );
130 p_sys->p_connection = p_connection;
131 if( !libhal_ctx_init( p_sys->p_ctx, &dbus_error ) )
133 msg_Err( p_sd, "hal not available : %s", dbus_error.message );
137 if( !libhal_ctx_set_device_added( p_sys->p_ctx, DeviceAdded ) ||
138 !libhal_ctx_set_device_removed( p_sys->p_ctx, DeviceRemoved ) )
140 msg_Err( p_sd, "unable to add callback" );
144 if( vlc_clone( &p_sys->thread, Run, p_this, VLC_THREAD_PRIORITY_LOW ) )
150 dbus_connection_unref( p_connection );
151 dbus_error_free( &dbus_error );
152 libhal_ctx_free( p_sys->p_ctx );
157 /*****************************************************************************
159 *****************************************************************************/
160 static void Close( vlc_object_t *p_this )
162 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
163 services_discovery_sys_t *p_sys = p_sd->p_sys;
165 /*vlc_cancel( p_sys->thread );*/
166 vlc_object_kill( p_sd );
167 vlc_join( p_sys->thread, NULL );
168 dbus_connection_unref( p_sys->p_connection );
169 struct udi_input_id_t *p_udi_entry;
171 while( p_sys->i_devices_number > 0 )
173 p_udi_entry = p_sys->pp_devices[0];
174 free( p_udi_entry->psz_udi );
175 TAB_REMOVE( p_sys->i_devices_number, p_sys->pp_devices,
176 p_sys->pp_devices[0] );
179 p_sys->pp_devices = NULL;
181 libhal_ctx_free( p_sys->p_ctx );
186 static void AddItem( services_discovery_t *p_sd, input_item_t * p_input,
187 const char* psz_device )
189 services_discovery_sys_t *p_sys = p_sd->p_sys;
190 services_discovery_AddItem( p_sd, p_input, NULL /* no category */ );
192 struct udi_input_id_t *p_udi_entry;
193 p_udi_entry = malloc( sizeof( struct udi_input_id_t ) );
196 p_udi_entry->psz_udi = strdup( psz_device );
197 if( !p_udi_entry->psz_udi )
203 vlc_gc_incref( p_input );
204 p_udi_entry->p_item = p_input;
205 TAB_APPEND( p_sys->i_devices_number, p_sys->pp_devices, p_udi_entry );
208 static void AddDvd( services_discovery_t *p_sd, const char *psz_device )
212 char *psz_blockdevice;
213 input_item_t *p_input;
215 psz_name = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
216 psz_device, "volume.label", NULL );
217 psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
218 psz_device, "block.device", NULL );
220 if( asprintf( &psz_uri, "dvd://%s", psz_blockdevice ) == -1 )
222 /* Create the playlist item here */
223 p_input = input_item_New( p_sd, psz_uri, psz_name );
230 AddItem( p_sd, p_input, psz_device );
232 vlc_gc_decref( p_input );
235 static void DelItem( services_discovery_t *p_sd, const char* psz_udi )
237 services_discovery_sys_t *p_sys = p_sd->p_sys;
240 for( i = 0; i < p_sys->i_devices_number; i++ )
241 { /* looks for a matching udi */
242 if( strcmp( psz_udi, p_sys->pp_devices[i]->psz_udi ) == 0 )
243 { /* delete the corresponding item */
244 services_discovery_RemoveItem( p_sd, p_sys->pp_devices[i]->p_item );
245 vlc_gc_decref( p_sys->pp_devices[i]->p_item );
246 free( p_sys->pp_devices[i]->psz_udi );
247 TAB_REMOVE( p_sys->i_devices_number, p_sys->pp_devices,
248 p_sys->pp_devices[i] );
253 static void AddCdda( services_discovery_t *p_sd, const char *psz_device )
256 char *psz_blockdevice;
257 input_item_t *p_input;
259 psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
260 psz_device, "block.device", NULL );
262 if( asprintf( &psz_uri, "cdda://%s", psz_blockdevice ) == -1 )
264 /* Create the item here */
265 p_input = input_item_New( p_sd, psz_uri, "Audio CD" );
270 AddItem( p_sd, p_input, psz_device );
272 vlc_gc_decref( p_input );
275 static void ParseDevice( services_discovery_t *p_sd, const char *psz_device )
278 services_discovery_sys_t *p_sys = p_sd->p_sys;
280 if( !libhal_device_property_exists( p_sys->p_ctx, psz_device,
281 "volume.disc.type", NULL ) )
284 psz_disc_type = libhal_device_get_property_string( p_sys->p_ctx,
288 if( !strncmp( psz_disc_type, "dvd_r", 5 ) )
290 if (libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
291 "volume.disc.is_videodvd", NULL ) )
292 AddDvd( p_sd, psz_device );
294 else if( !strncmp( psz_disc_type, "cd_r", 4 ) )
296 if( libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
297 "volume.disc.has_audio" , NULL ) )
298 AddCdda( p_sd, psz_device );
302 /*****************************************************************************
303 * Run: main HAL thread
304 *****************************************************************************/
305 static void *Run( void *data )
307 services_discovery_t *p_sd = data;
308 services_discovery_sys_t *p_sys = p_sd->p_sys;
311 int canc = vlc_savecancel();
313 /* parse existing devices first */
314 if( ( devices = libhal_get_all_devices( p_sys->p_ctx, &i_devices, NULL ) ) )
316 for( i = 0; i < i_devices; i++ )
318 ParseDevice( p_sd, devices[ i ] );
319 libhal_free_string( devices[ i ] );
324 /* FIXME: Totally lame. There are DBus watch functions to do this properly.
325 * -- Courmisch, 28/08/2008 */
326 while( vlc_object_alive (p_sd) )
328 /* look for events on the bus, blocking 1 second */
329 dbus_connection_read_write_dispatch( p_sys->p_connection, 1000 );
330 /* HAL 0.5.8.1 can use libhal_ctx_get_dbus_connection(p_sys->p_ctx) */
332 vlc_restorecancel (canc);
336 void DeviceAdded( LibHalContext *p_ctx, const char *psz_udi )
339 ParseDevice( p_sd_global, psz_udi );
342 void DeviceRemoved( LibHalContext *p_ctx, const char *psz_udi )
345 DelItem( p_sd_global, psz_udi );