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;
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 );
127 dbus_error_free( &dbus_error );
131 libhal_ctx_set_dbus_connection( p_sys->p_ctx, p_connection );
132 p_sys->p_connection = p_connection;
133 if( !libhal_ctx_init( p_sys->p_ctx, &dbus_error ) )
135 msg_Err( p_sd, "hal not available : %s", dbus_error.message );
139 if( !libhal_ctx_set_device_added( p_sys->p_ctx, DeviceAdded ) ||
140 !libhal_ctx_set_device_removed( p_sys->p_ctx, DeviceRemoved ) )
142 msg_Err( p_sd, "unable to add callback" );
146 if( vlc_clone( &p_sys->thread, Run, p_this, VLC_THREAD_PRIORITY_LOW ) )
151 dbus_error_free( &dbus_error );
156 /*****************************************************************************
158 *****************************************************************************/
159 static void Close( vlc_object_t *p_this )
161 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
162 services_discovery_sys_t *p_sys = p_sd->p_sys;
164 /*vlc_cancel( p_sys->thread );*/
165 vlc_object_kill( p_sd );
166 vlc_join( p_sys->thread, NULL );
167 dbus_connection_unref( p_sys->p_connection );
168 struct udi_input_id_t *p_udi_entry;
170 while( p_sys->i_devices_number > 0 )
172 p_udi_entry = p_sys->pp_devices[0];
173 free( p_udi_entry->psz_udi );
174 TAB_REMOVE( p_sys->i_devices_number, p_sys->pp_devices,
175 p_sys->pp_devices[0] );
178 p_sys->pp_devices = NULL;
183 static void AddItem( services_discovery_t *p_sd, input_item_t * p_input,
184 const char* psz_device )
186 services_discovery_sys_t *p_sys = p_sd->p_sys;
187 services_discovery_AddItem( p_sd, p_input, NULL /* no category */ );
189 struct udi_input_id_t *p_udi_entry;
190 p_udi_entry = malloc( sizeof( struct udi_input_id_t ) );
193 p_udi_entry->psz_udi = strdup( psz_device );
194 if( !p_udi_entry->psz_udi )
200 vlc_gc_incref( p_input );
201 p_udi_entry->p_item = p_input;
202 TAB_APPEND( p_sys->i_devices_number, p_sys->pp_devices, p_udi_entry );
205 static void AddDvd( services_discovery_t *p_sd, const char *psz_device )
209 char *psz_blockdevice;
210 input_item_t *p_input;
212 psz_name = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
213 psz_device, "volume.label", NULL );
214 psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
215 psz_device, "block.device", NULL );
217 if( asprintf( &psz_uri, "dvd://%s", psz_blockdevice ) == -1 )
219 /* Create the playlist item here */
220 p_input = input_item_New( p_sd, psz_uri, psz_name );
227 AddItem( p_sd, p_input, psz_device );
229 vlc_gc_decref( p_input );
232 static void DelItem( services_discovery_t *p_sd, const char* psz_udi )
234 services_discovery_sys_t *p_sys = p_sd->p_sys;
237 for( i = 0; i < p_sys->i_devices_number; i++ )
238 { /* looks for a matching udi */
239 if( strcmp( psz_udi, p_sys->pp_devices[i]->psz_udi ) == 0 )
240 { /* delete the corresponding item */
241 services_discovery_RemoveItem( p_sd, p_sys->pp_devices[i]->p_item );
242 vlc_gc_decref( p_sys->pp_devices[i]->p_item );
243 free( p_sys->pp_devices[i]->psz_udi );
244 TAB_REMOVE( p_sys->i_devices_number, p_sys->pp_devices,
245 p_sys->pp_devices[i] );
250 static void AddCdda( services_discovery_t *p_sd, const char *psz_device )
253 char *psz_blockdevice;
254 input_item_t *p_input;
256 psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
257 psz_device, "block.device", NULL );
259 if( asprintf( &psz_uri, "cdda://%s", psz_blockdevice ) == -1 )
261 /* Create the item here */
262 p_input = input_item_New( p_sd, psz_uri, "Audio CD" );
267 AddItem( p_sd, p_input, psz_device );
269 vlc_gc_decref( p_input );
272 static void ParseDevice( services_discovery_t *p_sd, const char *psz_device )
275 services_discovery_sys_t *p_sys = p_sd->p_sys;
277 if( !libhal_device_property_exists( p_sys->p_ctx, psz_device,
278 "volume.disc.type", NULL ) )
281 psz_disc_type = libhal_device_get_property_string( p_sys->p_ctx,
285 if( !strncmp( psz_disc_type, "dvd_r", 5 ) )
287 if (libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
288 "volume.disc.is_videodvd", NULL ) )
289 AddDvd( p_sd, psz_device );
291 else if( !strncmp( psz_disc_type, "cd_r", 4 ) )
293 if( libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
294 "volume.disc.has_audio" , NULL ) )
295 AddCdda( p_sd, psz_device );
299 /*****************************************************************************
300 * Run: main HAL thread
301 *****************************************************************************/
302 static void *Run( void *data )
304 services_discovery_t *p_sd = data;
305 services_discovery_sys_t *p_sys = p_sd->p_sys;
308 int canc = vlc_savecancel();
310 /* parse existing devices first */
311 if( ( devices = libhal_get_all_devices( p_sys->p_ctx, &i_devices, NULL ) ) )
313 for( i = 0; i < i_devices; i++ )
315 ParseDevice( p_sd, devices[ i ] );
316 libhal_free_string( devices[ i ] );
320 /* FIXME: Totally lame. There are DBus watch functions to do this properly.
321 * -- Courmisch, 28/08/2008 */
322 while( vlc_object_alive (p_sd) )
324 /* look for events on the bus, blocking 1 second */
325 dbus_connection_read_write_dispatch( p_sys->p_connection, 1000 );
326 /* HAL 0.5.8.1 can use libhal_ctx_get_dbus_connection(p_sys->p_ctx) */
328 vlc_restorecancel (canc);
332 void DeviceAdded( LibHalContext *p_ctx, const char *psz_udi )
335 ParseDevice( p_sd_global, psz_udi );
338 void DeviceRemoved( LibHalContext *p_ctx, const char *psz_udi )
341 DelItem( p_sd_global, psz_udi );