1 /*****************************************************************************
2 * dbus.c : D-Bus control interface
3 *****************************************************************************
4 * Copyright (C) 2006 Rafaël Carré
7 * Author: Rafaël Carré <funman at videolanorg>
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
25 * D-Bus Specification:
26 * http://dbus.freedesktop.org/doc/dbus-specification.html
27 * D-Bus low-level C API (libdbus)
28 * http://dbus.freedesktop.org/doc/dbus/api/html/index.html
35 * macros to read incoming arguments
37 * explore different possible types (arrays..)
39 * what must we do if org.videolan.vlc already exist on the bus ?
40 * ( there is more than one vlc instance )
43 /*****************************************************************************
45 *****************************************************************************/
47 #include <dbus/dbus.h>
52 #include <sys/types.h> /* getpid() */
53 #include <unistd.h> /* getpid() */
60 #include <vlc_input.h>
62 /*****************************************************************************
64 *****************************************************************************/
66 static int Open ( vlc_object_t * );
67 static void Close ( vlc_object_t * );
68 static void Run ( intf_thread_t * );
71 static int ItemChange( vlc_object_t *p_this, const char *psz_var,
72 vlc_value_t oldval, vlc_value_t newval, void *p_data );
76 DBusConnection *p_conn;
79 /*****************************************************************************
81 *****************************************************************************/
84 set_shortname( _("dbus"));
85 set_category( CAT_INTERFACE );
86 set_subcategory( SUBCAT_INTERFACE_CONTROL );
87 set_description( _("D-Bus control interface") );
88 set_capability( "interface", 0 );
89 set_callbacks( Open, Close );
92 /*****************************************************************************
94 *****************************************************************************/
96 DBUS_METHOD( Nothing )
102 DBUS_METHOD( GetPlayStatus )
103 { /* return a string */
109 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
111 input_thread_t *p_input = p_playlist->p_input;
114 psz_play = strdup( "stopped" );
117 var_Get( p_input, "state", &val );
118 if( val.i_int == PAUSE_S )
119 psz_play = strdup( "pause" );
120 else if( val.i_int == PLAYING_S )
121 psz_play = strdup( "playing" );
122 else psz_play = strdup( "unknown" );
126 pl_Release( p_playlist );
128 ADD_STRING( &psz_play );
133 DBUS_METHOD( TogglePause )
134 { /* return a bool: true if playing */
139 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
141 input_thread_t *p_input = p_playlist->p_input;
145 var_Get( p_input, "state", &val );
146 if( val.i_int != PAUSE_S )
152 val.i_int = PLAYING_S;
154 var_Set( p_input, "state", val );
157 pl_Release( p_playlist );
159 dbus_bool_t pause = ( val.i_int == PLAYING_S ) ? TRUE : FALSE;
164 DBUS_SIGNAL( NewInstance )
165 { /* emits a signal with vlc pid */
166 SIGNAL_INIT( "NewInstance" );
168 dbus_uint32_t i_pid = (dbus_uint32_t) getpid();
169 ADD_UINT32( &i_pid );
173 DBUS_METHOD( AddMRL )
174 { /* add the string to the playlist, and play it if the boolean is true */
178 dbus_error_init( &error );
180 intf_thread_t *p_intf = (intf_thread_t*) p_this;
184 dbus_message_get_args( p_from, &error,
185 DBUS_TYPE_STRING, &psz_mrl,
186 DBUS_TYPE_BOOLEAN, &b_play,
189 if( dbus_error_is_set( &error ) )
191 printf("error: %s\n", error.message );
192 dbus_error_free( &error );
193 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
196 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
197 input_item_t *p_item = input_ItemNew( p_intf, psz_mrl, NULL );
200 playlist_AddInput( p_playlist, p_item,
201 ( b_play == TRUE ) ? PLAYLIST_GO|PLAYLIST_APPEND : PLAYLIST_APPEND,
202 PLAYLIST_END, VLC_TRUE );
204 pl_Release( p_playlist );
209 /*****************************************************************************
210 * Introspection method
211 *****************************************************************************/
213 DBUS_METHOD( handle_introspect )
214 { /* handles introspection of /org/videolan/vlc */
217 ADD_STRING( &psz_introspection_xml_data );
221 /*****************************************************************************
222 * handle_messages: answer to incoming messages
223 *****************************************************************************/
225 #define METHOD_FUNC( method, function ) \
226 else if( dbus_message_is_method_call( p_from, VLC_DBUS_INTERFACE, method ) )\
227 return function( p_conn, p_from, p_this )
229 DBUS_METHOD( handle_messages )
230 { /* the main handler, that call methods */
232 if( dbus_message_is_method_call( p_from,
233 DBUS_INTERFACE_INTROSPECTABLE, "Introspect" ) )
234 return handle_introspect( p_conn, p_from, p_this );
236 /* here D-Bus method's names are associated to an handler */
238 METHOD_FUNC( "GetPlayStatus", GetPlayStatus );
239 METHOD_FUNC( "AddMRL", AddMRL );
240 METHOD_FUNC( "TogglePause", TogglePause );
241 METHOD_FUNC( "Nothing", Nothing );
243 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
246 /*****************************************************************************
247 * Open: initialize interface
248 *****************************************************************************/
250 static int Open( vlc_object_t *p_this )
251 { /* initialisation of the connection */
252 intf_thread_t *p_intf = (intf_thread_t*)p_this;
253 intf_sys_t *p_sys = malloc( sizeof( intf_sys_t ) );
254 playlist_t *p_playlist;
255 DBusConnection *p_conn;
261 dbus_threads_init_default();
263 dbus_error_init( &error );
265 /* connect to the session bus */
266 p_conn = dbus_bus_get( DBUS_BUS_SESSION, &error );
269 msg_Err( p_this, "Failed to connect to the D-Bus session daemon: %s",
271 dbus_error_free( &error );
276 /* we request the service org.videolan.vlc */
277 dbus_bus_request_name( p_conn, VLC_DBUS_SERVICE,
278 DBUS_NAME_FLAG_REPLACE_EXISTING , &error );
279 if (dbus_error_is_set( &error ) )
281 msg_Err( p_this, "Error requesting %s service: %s\n", VLC_DBUS_SERVICE,
283 dbus_error_free( &error );
288 /* we register the object /org/videolan/vlc */
289 dbus_connection_register_object_path( p_conn, VLC_DBUS_OBJECT_PATH,
290 &vlc_dbus_vtable, p_this );
292 dbus_connection_flush( p_conn );
294 p_playlist = pl_Yield( p_intf );
296 var_AddCallback( p_playlist, "playlist-current", ItemChange, p_intf );
298 pl_Release( p_playlist );
300 p_intf->pf_run = Run;
301 p_intf->p_sys = p_sys;
302 p_sys->p_conn = p_conn;
307 /*****************************************************************************
308 * Close: destroy interface
309 *****************************************************************************/
311 static void Close ( vlc_object_t *p_this )
313 intf_thread_t *p_intf = (intf_thread_t*) p_this;
314 playlist_t *p_playlist = pl_Yield( p_intf );;
317 var_DelCallback( p_playlist, "playlist-current", ItemChange, p_intf );
319 pl_Release( p_playlist );
321 free( p_intf->p_sys );
324 /*****************************************************************************
326 *****************************************************************************/
328 static void Run ( intf_thread_t *p_intf )
330 NewInstance( p_intf->p_sys->p_conn, NULL );
332 while( !p_intf->b_die )
334 msleep( INTF_IDLE_SLEEP );
335 dbus_connection_read_write_dispatch( p_intf->p_sys->p_conn, 0 );
339 /*****************************************************************************
340 * ItemChange: Playlist item change callback
341 *****************************************************************************/
343 DBUS_SIGNAL( ItemChangeSignal )
344 { /* emit the name of the new item */
345 SIGNAL_INIT( "ItemChange" );
348 input_thread_t *p_input = (input_thread_t*) p_data;
349 ADD_STRING( &p_input->input.p_item->psz_name );
354 static int ItemChange( vlc_object_t *p_this, const char *psz_var,
355 vlc_value_t oldval, vlc_value_t newval, void *p_data )
357 intf_thread_t *p_intf = ( intf_thread_t* ) p_data;
358 intf_sys_t *p_sys = p_intf->p_sys;
359 playlist_t *p_playlist;
360 input_thread_t *p_input = NULL;
361 (void)p_this; (void)psz_var; (void)oldval; (void)newval;
363 p_playlist = pl_Yield( p_intf );
365 p_input = p_playlist->p_input;
370 pl_Release( p_playlist );
374 vlc_object_yield( p_input );
376 pl_Release( p_playlist );
378 ItemChangeSignal( p_sys->p_conn, p_input );
380 vlc_object_release( p_input );