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>
34 #include <vlc_network.h>
36 #include <errno.h> /* ENOMEM */
41 #ifdef HAVE_SYS_TIME_H
42 # include <sys/time.h>
45 #include <hal/libhal.h>
47 #define MAX_LINE_LENGTH 256
49 /*****************************************************************************
51 *****************************************************************************/
53 /* store relation between item id and udi for ejection */
60 struct services_discovery_sys_t
63 DBusConnection *p_connection;
65 struct udi_input_id_t **pp_devices;
67 static void Run ( services_discovery_t *p_intf );
69 static int Open ( vlc_object_t * );
70 static void Close( vlc_object_t * );
73 void DeviceAdded( LibHalContext *p_ctx, const char *psz_udi );
74 void DeviceRemoved( LibHalContext *p_ctx, const char *psz_udi );
76 /* to retrieve p_sd in HAL callbacks */
77 services_discovery_t *p_sd_global;
79 /*****************************************************************************
81 *****************************************************************************/
83 set_description( N_("HAL devices detection") );
84 set_category( CAT_PLAYLIST );
85 set_subcategory( SUBCAT_PLAYLIST_SD );
87 set_capability( "services_discovery", 0 );
88 set_callbacks( Open, Close );
93 /*****************************************************************************
94 * Open: initialize and create stuff
95 *****************************************************************************/
96 static int Open( vlc_object_t *p_this )
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 ) );
104 DBusError dbus_error;
105 DBusConnection *p_connection;
108 p_sys->i_devices_number = 0;
109 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 );
136 dbus_error_free( &dbus_error );
141 if( !libhal_ctx_set_device_added( p_sys->p_ctx, DeviceAdded ) ||
142 !libhal_ctx_set_device_removed( p_sys->p_ctx, DeviceRemoved ) )
144 msg_Err( p_sd, "unable to add callback" );
145 dbus_error_free( &dbus_error );
150 services_discovery_SetLocalizedName( p_sd, _("Devices") );
155 /*****************************************************************************
157 *****************************************************************************/
158 static void Close( vlc_object_t *p_this )
160 services_discovery_t *p_sd = ( services_discovery_t* )p_this;
161 services_discovery_sys_t *p_sys = p_sd->p_sys;
163 dbus_connection_unref( p_sys->p_connection );
164 struct udi_input_id_t *p_udi_entry;
166 while( p_sys->i_devices_number > 0 )
168 p_udi_entry = p_sys->pp_devices[0];
169 free( p_udi_entry->psz_udi );
170 TAB_REMOVE( p_sys->i_devices_number, p_sys->pp_devices,
171 p_sys->pp_devices[0] );
174 p_sys->pp_devices = NULL;
179 static void AddItem( services_discovery_t *p_sd, input_item_t * p_input,
180 const char* psz_device )
182 services_discovery_sys_t *p_sys = p_sd->p_sys;
183 services_discovery_AddItem( p_sd, p_input, NULL /* no category */ );
185 struct udi_input_id_t *p_udi_entry;
186 p_udi_entry = malloc( sizeof( struct udi_input_id_t ) );
189 p_udi_entry->psz_udi = strdup( psz_device );
190 if( !p_udi_entry->psz_udi )
196 vlc_gc_incref( p_input );
197 p_udi_entry->p_item = p_input;
198 TAB_APPEND( p_sys->i_devices_number, p_sys->pp_devices, p_udi_entry );
201 static void AddDvd( services_discovery_t *p_sd, const char *psz_device )
205 char *psz_blockdevice;
206 input_item_t *p_input;
208 psz_name = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
209 psz_device, "volume.label", NULL );
210 psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
211 psz_device, "block.device", NULL );
213 if( asprintf( &psz_uri, "dvd://%s", psz_blockdevice ) == -1 )
215 /* Create the playlist item here */
216 p_input = input_ItemNew( p_sd, psz_uri, psz_name );
223 AddItem( p_sd, p_input, psz_device );
225 vlc_gc_decref( p_input );
228 static void DelItem( services_discovery_t *p_sd, const char* psz_udi )
230 services_discovery_sys_t *p_sys = p_sd->p_sys;
233 for( i = 0; i < p_sys->i_devices_number; i++ )
234 { /* looks for a matching udi */
235 if( strcmp( psz_udi, p_sys->pp_devices[i]->psz_udi ) == 0 )
236 { /* delete the corresponding item */
237 services_discovery_RemoveItem( p_sd, p_sys->pp_devices[i]->p_item );
238 vlc_gc_decref( p_sys->pp_devices[i]->p_item );
239 free( p_sys->pp_devices[i]->psz_udi );
240 TAB_REMOVE( p_sys->i_devices_number, p_sys->pp_devices,
241 p_sys->pp_devices[i] );
246 static void AddCdda( services_discovery_t *p_sd, const char *psz_device )
249 char *psz_blockdevice;
250 input_item_t *p_input;
252 psz_blockdevice = libhal_device_get_property_string( p_sd->p_sys->p_ctx,
253 psz_device, "block.device", NULL );
255 if( asprintf( &psz_uri, "cdda://%s", psz_blockdevice ) == -1 )
257 /* Create the item here */
258 p_input = input_ItemNew( p_sd, psz_uri, "Audio CD" );
263 AddItem( p_sd, p_input, psz_device );
265 vlc_gc_decref( p_input );
268 static void ParseDevice( services_discovery_t *p_sd, const char *psz_device )
271 services_discovery_sys_t *p_sys = p_sd->p_sys;
273 if( !libhal_device_property_exists( p_sys->p_ctx, psz_device,
274 "volume.disc.type", NULL ) )
277 psz_disc_type = libhal_device_get_property_string( p_sys->p_ctx,
281 if( !strncmp( psz_disc_type, "dvd_r", 5 ) )
283 if (libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
284 "volume.disc.is_videodvd", NULL ) )
285 AddDvd( p_sd, psz_device );
287 else if( !strncmp( psz_disc_type, "cd_r", 4 ) )
289 if( libhal_device_get_property_bool( p_sys->p_ctx, psz_device,
290 "volume.disc.has_audio" , NULL ) )
291 AddCdda( p_sd, psz_device );
295 /*****************************************************************************
296 * Run: main HAL thread
297 *****************************************************************************/
298 static void Run( services_discovery_t *p_sd )
302 services_discovery_sys_t *p_sys = p_sd->p_sys;
304 /* parse existing devices first */
305 if( ( devices = libhal_get_all_devices( p_sys->p_ctx, &i_devices, NULL ) ) )
307 for( i = 0; i < i_devices; i++ )
309 ParseDevice( p_sd, devices[ i ] );
310 libhal_free_string( devices[ i ] );
313 while( vlc_object_alive (p_sd) )
315 /* look for events on the bus, blocking 1 second */
316 dbus_connection_read_write_dispatch( p_sys->p_connection, 1000 );
317 /* HAL 0.5.8.1 can use libhal_ctx_get_dbus_connection(p_sys->p_ctx) */
321 void DeviceAdded( LibHalContext *p_ctx, const char *psz_udi )
324 ParseDevice( p_sd_global, psz_udi );
327 void DeviceRemoved( LibHalContext *p_ctx, const char *psz_udi )
330 DelItem( p_sd_global, psz_udi );