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 )
105 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
106 playlist_Stop( p_playlist );
107 pl_Release( ((vlc_object_t*) p_this) );
108 ((vlc_object_t*)p_this)->b_die = VLC_TRUE;
113 { /* next playlist item */
115 playlist_t *p_playlist = pl_Yield( ((vlc_object_t*) p_this) );
116 playlist_Next( p_playlist );
117 pl_Release( ((vlc_object_t*) p_this) );
122 { /* previous playlist item */
124 playlist_t *p_playlist = pl_Yield( ((vlc_object_t*) p_this) );
125 playlist_Prev( p_playlist );
126 pl_Release( ((vlc_object_t*) p_this) );
133 playlist_t *p_playlist = pl_Yield( ((vlc_object_t*) p_this) );
134 playlist_Stop( p_playlist );
135 pl_Release( ((vlc_object_t*) p_this) );
138 DBUS_METHOD( GetPlayStatus )
139 { /* return a string */
145 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
147 input_thread_t *p_input = p_playlist->p_input;
150 psz_play = strdup( "stopped" );
153 var_Get( p_input, "state", &val );
154 if( val.i_int == PAUSE_S )
155 psz_play = strdup( "pause" );
156 else if( val.i_int == PLAYING_S )
157 psz_play = strdup( "playing" );
158 else psz_play = strdup( "unknown" );
162 pl_Release( p_playlist );
164 ADD_STRING( &psz_play );
169 DBUS_METHOD( TogglePause )
170 { /* return a bool: true if playing */
175 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
177 input_thread_t *p_input = p_playlist->p_input;
181 var_Get( p_input, "state", &val );
182 if( val.i_int != PAUSE_S )
188 val.i_int = PLAYING_S;
190 var_Set( p_input, "state", val );
193 pl_Release( p_playlist );
195 dbus_bool_t pause = ( val.i_int == PLAYING_S ) ? TRUE : FALSE;
200 DBUS_SIGNAL( NewInstance )
201 { /* emits a signal with vlc pid */
202 SIGNAL_INIT( "NewInstance" );
204 dbus_uint32_t i_pid = (dbus_uint32_t) getpid();
205 ADD_UINT32( &i_pid );
209 DBUS_METHOD( AddMRL )
210 { /* add the string to the playlist, and play it if the boolean is true */
214 dbus_error_init( &error );
216 intf_thread_t *p_intf = (intf_thread_t*) p_this;
220 dbus_message_get_args( p_from, &error,
221 DBUS_TYPE_STRING, &psz_mrl,
222 DBUS_TYPE_BOOLEAN, &b_play,
225 if( dbus_error_is_set( &error ) )
227 printf("error: %s\n", error.message );
228 dbus_error_free( &error );
229 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
232 playlist_t *p_playlist = pl_Yield( (vlc_object_t*) p_this );
233 input_item_t *p_item = input_ItemNew( p_intf, psz_mrl, NULL );
236 playlist_AddInput( p_playlist, p_item,
237 ( b_play == TRUE ) ? PLAYLIST_GO|PLAYLIST_APPEND : PLAYLIST_APPEND,
238 PLAYLIST_END, VLC_TRUE );
240 pl_Release( p_playlist );
245 /*****************************************************************************
246 * Introspection method
247 *****************************************************************************/
249 DBUS_METHOD( handle_introspect )
250 { /* handles introspection of /org/videolan/vlc */
253 ADD_STRING( &psz_introspection_xml_data );
257 /*****************************************************************************
258 * handle_messages: answer to incoming messages
259 *****************************************************************************/
261 #define METHOD_FUNC( method, function ) \
262 else if( dbus_message_is_method_call( p_from, VLC_DBUS_INTERFACE, method ) )\
263 return function( p_conn, p_from, p_this )
265 DBUS_METHOD( handle_messages )
266 { /* the main handler, that call methods */
268 if( dbus_message_is_method_call( p_from,
269 DBUS_INTERFACE_INTROSPECTABLE, "Introspect" ) )
270 return handle_introspect( p_conn, p_from, p_this );
272 /* here D-Bus method's names are associated to an handler */
274 METHOD_FUNC( "GetPlayStatus", GetPlayStatus );
275 METHOD_FUNC( "AddMRL", AddMRL );
276 METHOD_FUNC( "TogglePause", TogglePause );
277 METHOD_FUNC( "Nothing", Nothing );
278 METHOD_FUNC( "Prev", Prev );
279 METHOD_FUNC( "Next", Next );
280 METHOD_FUNC( "Quit", Quit );
281 METHOD_FUNC( "Stop", Stop );
283 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
286 /*****************************************************************************
287 * Open: initialize interface
288 *****************************************************************************/
290 static int Open( vlc_object_t *p_this )
291 { /* initialisation of the connection */
292 intf_thread_t *p_intf = (intf_thread_t*)p_this;
293 intf_sys_t *p_sys = malloc( sizeof( intf_sys_t ) );
294 playlist_t *p_playlist;
295 DBusConnection *p_conn;
301 dbus_threads_init_default();
303 dbus_error_init( &error );
305 /* connect to the session bus */
306 p_conn = dbus_bus_get( DBUS_BUS_SESSION, &error );
309 msg_Err( p_this, "Failed to connect to the D-Bus session daemon: %s",
311 dbus_error_free( &error );
316 /* we request the service org.videolan.vlc */
317 dbus_bus_request_name( p_conn, VLC_DBUS_SERVICE,
318 DBUS_NAME_FLAG_REPLACE_EXISTING , &error );
319 if (dbus_error_is_set( &error ) )
321 msg_Err( p_this, "Error requesting %s service: %s\n", VLC_DBUS_SERVICE,
323 dbus_error_free( &error );
328 /* we register the object /org/videolan/vlc */
329 dbus_connection_register_object_path( p_conn, VLC_DBUS_OBJECT_PATH,
330 &vlc_dbus_vtable, p_this );
332 dbus_connection_flush( p_conn );
334 p_playlist = pl_Yield( p_intf );
336 var_AddCallback( p_playlist, "playlist-current", ItemChange, p_intf );
338 pl_Release( p_playlist );
340 p_intf->pf_run = Run;
341 p_intf->p_sys = p_sys;
342 p_sys->p_conn = p_conn;
347 /*****************************************************************************
348 * Close: destroy interface
349 *****************************************************************************/
351 static void Close ( vlc_object_t *p_this )
353 intf_thread_t *p_intf = (intf_thread_t*) p_this;
354 playlist_t *p_playlist = pl_Yield( p_intf );;
357 var_DelCallback( p_playlist, "playlist-current", ItemChange, p_intf );
359 pl_Release( p_playlist );
361 free( p_intf->p_sys );
364 /*****************************************************************************
366 *****************************************************************************/
368 static void Run ( intf_thread_t *p_intf )
370 NewInstance( p_intf->p_sys->p_conn, NULL );
372 while( !p_intf->b_die )
374 msleep( INTF_IDLE_SLEEP );
375 dbus_connection_read_write_dispatch( p_intf->p_sys->p_conn, 0 );
379 /*****************************************************************************
380 * ItemChange: Playlist item change callback
381 *****************************************************************************/
383 DBUS_SIGNAL( ItemChangeSignal )
384 { /* emit the name of the new item */
385 SIGNAL_INIT( "ItemChange" );
388 input_thread_t *p_input = (input_thread_t*) p_data;
389 ADD_STRING( &p_input->input.p_item->psz_name );
394 static int ItemChange( vlc_object_t *p_this, const char *psz_var,
395 vlc_value_t oldval, vlc_value_t newval, void *p_data )
397 intf_thread_t *p_intf = ( intf_thread_t* ) p_data;
398 intf_sys_t *p_sys = p_intf->p_sys;
399 playlist_t *p_playlist;
400 input_thread_t *p_input = NULL;
401 (void)p_this; (void)psz_var; (void)oldval; (void)newval;
403 p_playlist = pl_Yield( p_intf );
405 p_input = p_playlist->p_input;
410 pl_Release( p_playlist );
414 vlc_object_yield( p_input );
416 pl_Release( p_playlist );
418 ItemChangeSignal( p_sys->p_conn, p_input );
420 vlc_object_release( p_input );