1 /*****************************************************************************
2 * dbus.c : D-Bus control interface
3 *****************************************************************************
4 * Copyright © 2006-2008 Rafaël Carré
5 * Copyright © 2007-2008 Mirsal Ennaime
6 * Copyright © 2009 The VideoLAN team
9 * Authors: Rafaël Carré <funman at videolanorg>
10 * Mirsal Ennaime <mirsal dot ennaime at gmail dot com>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
28 * D-Bus Specification:
29 * http://dbus.freedesktop.org/doc/dbus-specification.html
30 * D-Bus low-level C API (libdbus)
31 * http://dbus.freedesktop.org/doc/dbus/api/html/index.html
33 * "If you use this low-level API directly, you're signing up for some pain."
35 * MPRIS Specification version 1.0
36 * http://wiki.xmms2.xmms.se/index.php/MPRIS
39 /*****************************************************************************
41 *****************************************************************************/
47 #include <dbus/dbus.h>
50 #include <vlc_common.h>
51 #include <vlc_plugin.h>
53 #include <vlc_interface.h>
54 #include <vlc_playlist.h>
61 /*****************************************************************************
63 *****************************************************************************/
65 static int Open ( vlc_object_t * );
66 static void Close ( vlc_object_t * );
67 static void Run ( intf_thread_t * );
69 static int StateChange( intf_thread_t *, int );
70 static int TrackChange( intf_thread_t * );
71 static int StatusChangeEmit( intf_thread_t *);
72 static int TrackListChangeEmit( intf_thread_t *, int, int );
74 static int AllCallback( vlc_object_t*, const char*, vlc_value_t, vlc_value_t, void* );
76 static int GetInputMeta ( input_item_t *, DBusMessageIter * );
77 static int MarshalStatus ( intf_thread_t *, DBusMessageIter * );
78 static int UpdateCaps( intf_thread_t* );
80 /* GetCaps() capabilities */
84 CAPS_CAN_GO_NEXT = 1 << 0,
85 CAPS_CAN_GO_PREV = 1 << 1,
86 CAPS_CAN_PAUSE = 1 << 2,
87 CAPS_CAN_PLAY = 1 << 3,
88 CAPS_CAN_SEEK = 1 << 4,
89 CAPS_CAN_PROVIDE_METADATA = 1 << 5,
90 CAPS_CAN_HAS_TRACKLIST = 1 << 6
93 // The signal that can be get from the callbacks
98 SIGNAL_PLAYLIST_ITEM_APPEND,
99 SIGNAL_PLAYLIST_ITEM_DELETED,
108 DBusConnection *p_conn;
109 playlist_t *p_playlist;
113 vlc_array_t *p_events;
124 #define INTF ((intf_thread_t *)p_this)
125 #define PL (INTF->p_sys->p_playlist)
128 /*****************************************************************************
130 *****************************************************************************/
133 set_shortname( N_("dbus"))
134 set_category( CAT_INTERFACE )
135 set_subcategory( SUBCAT_INTERFACE_CONTROL )
136 set_description( N_("D-Bus control interface") )
137 set_capability( "interface", 0 )
138 set_callbacks( Open, Close )
141 /*****************************************************************************
143 *****************************************************************************/
150 libvlc_Quit(INTF->p_libvlc);
154 DBUS_METHOD( MprisVersion )
155 { /*implemented version of the mpris spec */
158 VLC_UNUSED( p_this );
159 dbus_uint16_t i_major = VLC_MPRIS_VERSION_MAJOR;
160 dbus_uint16_t i_minor = VLC_MPRIS_VERSION_MINOR;
161 DBusMessageIter version;
163 if( !dbus_message_iter_open_container( &args, DBUS_TYPE_STRUCT, NULL,
165 return DBUS_HANDLER_RESULT_NEED_MEMORY;
167 if( !dbus_message_iter_append_basic( &version, DBUS_TYPE_UINT16,
169 return DBUS_HANDLER_RESULT_NEED_MEMORY;
171 if( !dbus_message_iter_append_basic( &version, DBUS_TYPE_UINT16,
173 return DBUS_HANDLER_RESULT_NEED_MEMORY;
175 if( !dbus_message_iter_close_container( &args, &version ) )
176 return DBUS_HANDLER_RESULT_NEED_MEMORY;
180 DBUS_METHOD( PositionGet )
181 { /* returns position in milliseconds */
186 input_thread_t *p_input = playlist_CurrentInput( PL );
192 i_pos = var_GetTime( p_input, "time" ) / 1000;
193 vlc_object_release( p_input );
199 DBUS_METHOD( PositionSet )
200 { /* set position in milliseconds */
203 vlc_value_t position;
207 dbus_error_init( &error );
209 dbus_message_get_args( p_from, &error,
210 DBUS_TYPE_INT32, &i_pos,
213 if( dbus_error_is_set( &error ) )
215 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
217 dbus_error_free( &error );
218 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
220 input_thread_t *p_input = playlist_CurrentInput( PL );
224 position.i_time = ((mtime_t)i_pos) * 1000;
225 var_Set( p_input, "time", position );
226 vlc_object_release( p_input );
231 DBUS_METHOD( VolumeGet )
232 { /* returns volume in percentage */
235 dbus_int32_t i_dbus_vol;
236 audio_volume_t i_vol;
238 /* 2nd argument of aout_VolumeGet is int32 */
239 aout_VolumeGet( PL, &i_vol );
241 double f_vol = 100. * i_vol / AOUT_VOLUME_MAX;
242 i_dbus_vol = round( f_vol );
243 ADD_INT32( &i_dbus_vol );
247 DBUS_METHOD( VolumeSet )
248 { /* set volume in percentage */
252 dbus_error_init( &error );
254 dbus_int32_t i_dbus_vol;
255 audio_volume_t i_vol;
257 dbus_message_get_args( p_from, &error,
258 DBUS_TYPE_INT32, &i_dbus_vol,
261 if( dbus_error_is_set( &error ) )
263 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
265 dbus_error_free( &error );
266 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
269 double f_vol = AOUT_VOLUME_MAX * i_dbus_vol / 100.;
270 i_vol = round( f_vol );
271 aout_VolumeSet( PL, i_vol );
276 { /* next playlist item */
283 { /* previous playlist item */
296 DBUS_METHOD( GetStatus )
297 { /* returns the current status as a struct of 4 ints */
299 First 0 = Playing, 1 = Paused, 2 = Stopped.
300 Second 0 = Playing linearly , 1 = Playing randomly.
301 Third 0 = Go to the next element once the current has finished playing , 1 = Repeat the current element
302 Fourth 0 = Stop playing once the last element has been played, 1 = Never give up playing *
307 MarshalStatus( p_this, &args );
315 playlist_Pause( PL );
323 input_thread_t *p_input = playlist_CurrentInput( PL );
328 input_Control( p_input, INPUT_SET_POSITION, i_pos );
329 vlc_object_release( p_input );
337 DBUS_METHOD( GetCurrentMetadata )
341 playlist_t *p_playlist = PL;
344 playlist_item_t* p_item = playlist_CurrentPlayingItem( p_playlist );
346 GetInputMeta( p_item->p_input, &args );
351 DBUS_METHOD( GetCaps )
356 ADD_INT32( &INTF->p_sys->i_caps );
361 /* Media Player information */
363 DBUS_METHOD( Identity )
370 if( asprintf( &psz_identity, "%s %s", PACKAGE, VERSION ) != -1 )
372 ADD_STRING( &psz_identity );
373 free( psz_identity );
376 return DBUS_HANDLER_RESULT_NEED_MEMORY;
383 DBUS_METHOD( AddTrack )
384 { /* add the string to the playlist, and play it if the boolean is true */
389 dbus_error_init( &error );
394 dbus_message_get_args( p_from, &error,
395 DBUS_TYPE_STRING, &psz_mrl,
396 DBUS_TYPE_BOOLEAN, &b_play,
399 if( dbus_error_is_set( &error ) )
401 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
403 dbus_error_free( &error );
404 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
407 playlist_Add( PL, psz_mrl, NULL, PLAYLIST_APPEND |
408 ( ( b_play == TRUE ) ? PLAYLIST_GO : 0 ) ,
409 PLAYLIST_END, true, false );
411 dbus_int32_t i_success = 0;
412 ADD_INT32( &i_success );
417 DBUS_METHOD( GetCurrentTrack )
422 /* XXX: how about locking?! */
423 dbus_int32_t i_position = PL->i_current_index;
425 ADD_INT32( &i_position );
429 DBUS_METHOD( GetMetadata )
434 dbus_error_init( &error );
436 dbus_int32_t i_position;
437 playlist_t *p_playlist = PL;
439 dbus_message_get_args( p_from, &error,
440 DBUS_TYPE_INT32, &i_position,
443 if( dbus_error_is_set( &error ) )
445 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
447 dbus_error_free( &error );
448 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
452 if( i_position < p_playlist->current.i_size )
454 GetInputMeta( p_playlist->current.p_elems[i_position]->p_input, &args );
461 DBUS_METHOD( GetLength )
466 /* XXX: how about locking */
467 dbus_int32_t i_elements = PL->current.i_size;
469 ADD_INT32( &i_elements );
473 DBUS_METHOD( DelTrack )
478 dbus_error_init( &error );
480 dbus_int32_t i_position;
481 playlist_t *p_playlist = PL;
483 dbus_message_get_args( p_from, &error,
484 DBUS_TYPE_INT32, &i_position,
487 if( dbus_error_is_set( &error ) )
489 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
491 dbus_error_free( &error );
492 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
496 if( i_position < p_playlist->current.i_size )
498 playlist_DeleteFromInput( p_playlist,
499 p_playlist->current.p_elems[i_position]->p_input,
507 DBUS_METHOD( SetLoop )
515 dbus_error_init( &error );
516 dbus_message_get_args( p_from, &error,
517 DBUS_TYPE_BOOLEAN, &b_loop,
520 if( dbus_error_is_set( &error ) )
522 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
524 dbus_error_free( &error );
525 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
528 var_SetBool( PL, "loop", ( b_loop == TRUE ) );
533 DBUS_METHOD( Repeat )
539 dbus_bool_t b_repeat;
541 dbus_error_init( &error );
542 dbus_message_get_args( p_from, &error,
543 DBUS_TYPE_BOOLEAN, &b_repeat,
546 if( dbus_error_is_set( &error ) )
548 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
550 dbus_error_free( &error );
551 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
554 var_SetBool( PL, "repeat", ( b_repeat == TRUE ) );
559 DBUS_METHOD( SetRandom )
565 dbus_bool_t b_random;
567 dbus_error_init( &error );
568 dbus_message_get_args( p_from, &error,
569 DBUS_TYPE_BOOLEAN, &b_random,
572 if( dbus_error_is_set( &error ) )
574 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
576 dbus_error_free( &error );
577 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
580 var_SetBool( PL, "random", ( b_random == TRUE ) );
584 /*****************************************************************************
585 * Introspection method
586 *****************************************************************************/
588 DBUS_METHOD( handle_introspect_root )
589 { /* handles introspection of root object */
593 ADD_STRING( &psz_introspection_xml_data_root );
597 DBUS_METHOD( handle_introspect_player )
602 ADD_STRING( &psz_introspection_xml_data_player );
606 DBUS_METHOD( handle_introspect_tracklist )
611 ADD_STRING( &psz_introspection_xml_data_tracklist );
615 /*****************************************************************************
616 * handle_*: answer to incoming messages
617 *****************************************************************************/
619 #define METHOD_FUNC( method, function ) \
620 else if( dbus_message_is_method_call( p_from, MPRIS_DBUS_INTERFACE, method ) )\
621 return function( p_conn, p_from, p_this )
623 DBUS_METHOD( handle_root )
626 if( dbus_message_is_method_call( p_from,
627 DBUS_INTERFACE_INTROSPECTABLE, "Introspect" ) )
628 return handle_introspect_root( p_conn, p_from, p_this );
630 /* here D-Bus method's names are associated to an handler */
632 METHOD_FUNC( "Identity", Identity );
633 METHOD_FUNC( "MprisVersion", MprisVersion );
634 METHOD_FUNC( "Quit", Quit );
636 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
640 DBUS_METHOD( handle_player )
642 if( dbus_message_is_method_call( p_from,
643 DBUS_INTERFACE_INTROSPECTABLE, "Introspect" ) )
644 return handle_introspect_player( p_conn, p_from, p_this );
646 /* here D-Bus method's names are associated to an handler */
648 METHOD_FUNC( "Prev", Prev );
649 METHOD_FUNC( "Next", Next );
650 METHOD_FUNC( "Stop", Stop );
651 METHOD_FUNC( "Play", Play );
652 METHOD_FUNC( "Pause", Pause );
653 METHOD_FUNC( "Repeat", Repeat );
654 METHOD_FUNC( "VolumeSet", VolumeSet );
655 METHOD_FUNC( "VolumeGet", VolumeGet );
656 METHOD_FUNC( "PositionSet", PositionSet );
657 METHOD_FUNC( "PositionGet", PositionGet );
658 METHOD_FUNC( "GetStatus", GetStatus );
659 METHOD_FUNC( "GetMetadata", GetCurrentMetadata );
660 METHOD_FUNC( "GetCaps", GetCaps );
662 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
665 DBUS_METHOD( handle_tracklist )
667 if( dbus_message_is_method_call( p_from,
668 DBUS_INTERFACE_INTROSPECTABLE, "Introspect" ) )
669 return handle_introspect_tracklist( p_conn, p_from, p_this );
671 /* here D-Bus method's names are associated to an handler */
673 METHOD_FUNC( "GetMetadata", GetMetadata );
674 METHOD_FUNC( "GetCurrentTrack", GetCurrentTrack );
675 METHOD_FUNC( "GetLength", GetLength );
676 METHOD_FUNC( "AddTrack", AddTrack );
677 METHOD_FUNC( "DelTrack", DelTrack );
678 METHOD_FUNC( "SetLoop", SetLoop );
679 METHOD_FUNC( "SetRandom", SetRandom );
681 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
684 /*****************************************************************************
685 * Open: initialize interface
686 *****************************************************************************/
688 static int Open( vlc_object_t *p_this )
689 { /* initialisation of the connection */
690 intf_thread_t *p_intf = (intf_thread_t*)p_this;
691 intf_sys_t *p_sys = malloc( sizeof( intf_sys_t ) );
692 playlist_t *p_playlist;
693 DBusConnection *p_conn;
699 p_sys->b_meta_read = false;
700 p_sys->i_caps = CAPS_NONE;
701 p_sys->b_dead = false;
703 dbus_error_init( &error );
705 /* connect to the session bus */
706 p_conn = dbus_bus_get( DBUS_BUS_SESSION, &error );
709 msg_Err( p_this, "Failed to connect to the D-Bus session daemon: %s",
711 dbus_error_free( &error );
716 /* register a well-known name on the bus */
717 dbus_bus_request_name( p_conn, VLC_MPRIS_DBUS_SERVICE, 0, &error );
718 if( dbus_error_is_set( &error ) )
720 msg_Err( p_this, "Error requesting service " VLC_MPRIS_DBUS_SERVICE
721 ": %s", error.message );
722 dbus_error_free( &error );
727 /* we register the objects */
728 dbus_connection_register_object_path( p_conn, MPRIS_DBUS_ROOT_PATH,
729 &vlc_dbus_root_vtable, p_this );
730 dbus_connection_register_object_path( p_conn, MPRIS_DBUS_PLAYER_PATH,
731 &vlc_dbus_player_vtable, p_this );
732 dbus_connection_register_object_path( p_conn, MPRIS_DBUS_TRACKLIST_PATH,
733 &vlc_dbus_tracklist_vtable, p_this );
735 dbus_connection_flush( p_conn );
737 p_intf->pf_run = Run;
738 p_intf->p_sys = p_sys;
739 p_sys->p_conn = p_conn;
740 p_sys->p_events = vlc_array_new();
741 vlc_mutex_init( &p_sys->lock );
743 p_playlist = pl_Hold( p_intf );
744 p_sys->p_playlist = p_playlist;
747 var_AddCallback( p_playlist, "item-current", AllCallback, p_intf );
748 var_AddCallback( p_playlist, "intf-change", AllCallback, p_intf );
749 var_AddCallback( p_playlist, "playlist-item-append", AllCallback, p_intf );
750 var_AddCallback( p_playlist, "playlist-item-deleted", AllCallback, p_intf );
751 var_AddCallback( p_playlist, "random", AllCallback, p_intf );
752 var_AddCallback( p_playlist, "repeat", AllCallback, p_intf );
753 var_AddCallback( p_playlist, "loop", AllCallback, p_intf );
756 UpdateCaps( p_intf );
761 /*****************************************************************************
762 * Close: destroy interface
763 *****************************************************************************/
765 static void Close ( vlc_object_t *p_this )
767 intf_thread_t *p_intf = (intf_thread_t*) p_this;
768 intf_sys_t *p_sys = p_intf->p_sys;
769 playlist_t *p_playlist = p_sys->p_playlist;
770 input_thread_t *p_input;
772 var_DelCallback( p_playlist, "item-current", AllCallback, p_intf );
773 var_DelCallback( p_playlist, "intf-change", AllCallback, p_intf );
774 var_DelCallback( p_playlist, "playlist-item-append", AllCallback, p_intf );
775 var_DelCallback( p_playlist, "playlist-item-deleted", AllCallback, p_intf );
776 var_DelCallback( p_playlist, "random", AllCallback, p_intf );
777 var_DelCallback( p_playlist, "repeat", AllCallback, p_intf );
778 var_DelCallback( p_playlist, "loop", AllCallback, p_intf );
780 p_input = playlist_CurrentInput( p_playlist );
783 var_DelCallback( p_input, "state", AllCallback, p_intf );
784 vlc_object_release( p_input );
786 pl_Release( p_intf );
788 dbus_connection_unref( p_sys->p_conn );
790 // Free the events array
791 for( int i = 0; i < vlc_array_count( p_sys->p_events ); i++ )
793 callback_info_t* info = vlc_array_item_at_index( p_sys->p_events, i );
796 vlc_mutex_destroy( &p_sys->lock );
797 vlc_array_destroy( p_sys->p_events );
801 /*****************************************************************************
803 *****************************************************************************/
805 static void Run ( intf_thread_t *p_intf )
809 if( dbus_connection_get_dispatch_status(p_intf->p_sys->p_conn)
810 == DBUS_DISPATCH_COMPLETE )
811 msleep( INTF_IDLE_SLEEP );
812 int canc = vlc_savecancel();
813 dbus_connection_read_write_dispatch( p_intf->p_sys->p_conn, 0 );
815 /* Get the list of events to process
817 * We can't keep the lock on p_intf->p_sys->p_events, else we risk a
819 * The signal functions could lock mutex X while p_events is locked;
820 * While some other function in vlc (playlist) might lock mutex X
821 * and then set a variable which would call AllCallback(), which itself
822 * needs to lock p_events to add a new event.
824 vlc_mutex_lock( &p_intf->p_sys->lock );
825 int i_events = vlc_array_count( p_intf->p_sys->p_events );
826 callback_info_t* info[i_events];
827 for( int i = i_events - 1; i >= 0; i-- )
829 info[i] = vlc_array_item_at_index( p_intf->p_sys->p_events, i );
830 vlc_array_remove( p_intf->p_sys->p_events, i );
832 vlc_mutex_unlock( &p_intf->p_sys->lock );
834 for( int i = 0; i < i_events; i++ )
836 switch( info[i]->signal )
838 case SIGNAL_ITEM_CURRENT:
839 TrackChange( p_intf );
841 case SIGNAL_INTF_CHANGE:
842 case SIGNAL_PLAYLIST_ITEM_APPEND:
843 case SIGNAL_PLAYLIST_ITEM_DELETED:
844 TrackListChangeEmit( p_intf, info[i]->signal, info[i]->i_node );
849 StatusChangeEmit( p_intf );
852 StateChange( p_intf, info[i]->i_input_state );
859 vlc_restorecancel( canc );
864 // Get all the callbacks
865 static int AllCallback( vlc_object_t *p_this, const char *psz_var,
866 vlc_value_t oldval, vlc_value_t newval, void *p_data )
870 intf_thread_t *p_intf = (intf_thread_t*)p_data;
872 callback_info_t *info = malloc( sizeof( callback_info_t ) );
876 // Wich event is it ?
877 if( !strcmp( "item-current", psz_var ) )
878 info->signal = SIGNAL_ITEM_CURRENT;
879 else if( !strcmp( "intf-change", psz_var ) )
880 info->signal = SIGNAL_INTF_CHANGE;
881 else if( !strcmp( "playlist-item-append", psz_var ) )
883 info->signal = SIGNAL_PLAYLIST_ITEM_APPEND;
884 info->i_node = ((playlist_add_t*)newval.p_address)->i_node;
886 else if( !strcmp( "playlist-item-deleted", psz_var ) )
887 info->signal = SIGNAL_PLAYLIST_ITEM_DELETED;
888 else if( !strcmp( "random", psz_var ) )
889 info->signal = SIGNAL_RANDOM;
890 else if( !strcmp( "repeat", psz_var ) )
891 info->signal = SIGNAL_REPEAT;
892 else if( !strcmp( "loop", psz_var ) )
893 info->signal = SIGNAL_LOOP;
894 else if( !strcmp( "state", psz_var ) )
896 info->signal = SIGNAL_STATE;
897 info->i_input_state = newval.i_int;
903 vlc_mutex_lock( &p_intf->p_sys->lock );
904 vlc_array_append( p_intf->p_sys->p_events, info );
905 vlc_mutex_unlock( &p_intf->p_sys->lock );
909 /******************************************************************************
910 * CapsChange: player capabilities change signal
911 *****************************************************************************/
912 DBUS_SIGNAL( CapsChangeSignal )
914 SIGNAL_INIT( "CapsChange" );
917 ADD_INT32( &((intf_thread_t*)p_data)->p_sys->i_caps );
921 /******************************************************************************
922 * TrackListChange: tracklist order / length change signal
923 *****************************************************************************/
924 DBUS_SIGNAL( TrackListChangeSignal )
925 { /* emit the new tracklist lengh */
926 SIGNAL_INIT("TrackListChange");
930 dbus_int32_t i_elements = ((intf_thread_t*)p_data)->p_sys->p_playlist->current.i_size;
932 ADD_INT32( &i_elements );
936 /*****************************************************************************
937 * TrackListChangeEmit: Emits the TrackListChange signal
938 *****************************************************************************/
939 /* FIXME: It is not called on tracklist reordering */
940 static int TrackListChangeEmit( intf_thread_t *p_intf, int signal, int i_node )
942 // "playlist-item-append"
943 if( signal == SIGNAL_PLAYLIST_ITEM_APPEND )
945 /* don't signal when items are added/removed in p_category */
946 playlist_t *p_playlist = p_intf->p_sys->p_playlist;
948 playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_node );
950 while( p_item->p_parent )
951 p_item = p_item->p_parent;
952 if( p_item == p_playlist->p_root_category )
960 if( p_intf->p_sys->b_dead )
963 UpdateCaps( p_intf );
964 TrackListChangeSignal( p_intf->p_sys->p_conn, p_intf );
967 /*****************************************************************************
968 * TrackChange: Playlist item change callback
969 *****************************************************************************/
971 DBUS_SIGNAL( TrackChangeSignal )
972 { /* emit the metadata of the new item */
973 SIGNAL_INIT( "TrackChange" );
976 input_item_t *p_item = (input_item_t*) p_data;
977 GetInputMeta ( p_item, &args );
982 /*****************************************************************************
983 * StatusChange: Player status change signal
984 *****************************************************************************/
986 DBUS_SIGNAL( StatusChangeSignal )
987 { /* send the updated status info on the bus */
988 SIGNAL_INIT( "StatusChange" );
991 /* we're called from a callback of input_thread_t, so it can not be
992 * destroyed before we return */
993 MarshalStatus( (intf_thread_t*) p_data, &args );
998 /*****************************************************************************
999 * StateChange: callback on input "state"
1000 *****************************************************************************/
1001 //static int StateChange( vlc_object_t *p_this, const char* psz_var,
1002 // vlc_value_t oldval, vlc_value_t newval, void *p_data )
1003 static int StateChange( intf_thread_t *p_intf, int i_input_state )
1005 intf_sys_t *p_sys = p_intf->p_sys;
1006 playlist_t *p_playlist = p_sys->p_playlist;
1007 input_thread_t *p_input;
1008 input_item_t *p_item;
1010 if( p_intf->p_sys->b_dead )
1013 UpdateCaps( p_intf );
1015 if( !p_sys->b_meta_read && i_input_state == PLAYING_S )
1017 p_input = playlist_CurrentInput( p_playlist );
1020 p_item = input_GetItem( p_input );
1023 p_sys->b_meta_read = true;
1024 TrackChangeSignal( p_sys->p_conn, p_item );
1026 vlc_object_release( p_input );
1030 if( i_input_state == PLAYING_S || i_input_state == PAUSE_S ||
1031 i_input_state == END_S )
1033 StatusChangeSignal( p_sys->p_conn, p_intf );
1039 /*****************************************************************************
1040 * StatusChangeEmit: Emits the StatusChange signal
1041 *****************************************************************************/
1042 static int StatusChangeEmit( intf_thread_t * p_intf )
1044 if( p_intf->p_sys->b_dead )
1047 UpdateCaps( p_intf );
1048 StatusChangeSignal( p_intf->p_sys->p_conn, p_intf );
1052 /*****************************************************************************
1053 * TrackChange: callback on playlist "item-current"
1054 *****************************************************************************/
1055 static int TrackChange( intf_thread_t *p_intf )
1057 intf_sys_t *p_sys = p_intf->p_sys;
1058 playlist_t *p_playlist = p_sys->p_playlist;
1059 input_thread_t *p_input = NULL;
1060 input_item_t *p_item = NULL;
1062 if( p_intf->p_sys->b_dead )
1065 p_sys->b_meta_read = false;
1067 p_input = playlist_CurrentInput( p_playlist );
1073 p_item = input_GetItem( p_input );
1076 vlc_object_release( p_input );
1077 return VLC_EGENERIC;
1080 if( input_item_IsPreparsed( p_item ) )
1082 p_sys->b_meta_read = true;
1083 TrackChangeSignal( p_sys->p_conn, p_item );
1086 var_AddCallback( p_input, "state", AllCallback, p_intf );
1088 vlc_object_release( p_input );
1092 /*****************************************************************************
1093 * UpdateCaps: update p_sys->i_caps
1094 * This function have to be called with the playlist unlocked
1095 ****************************************************************************/
1096 static int UpdateCaps( intf_thread_t* p_intf )
1098 intf_sys_t* p_sys = p_intf->p_sys;
1099 dbus_int32_t i_caps = CAPS_CAN_HAS_TRACKLIST;
1100 playlist_t* p_playlist = p_sys->p_playlist;
1103 if( p_playlist->current.i_size > 0 )
1104 i_caps |= CAPS_CAN_PLAY | CAPS_CAN_GO_PREV | CAPS_CAN_GO_NEXT;
1107 input_thread_t* p_input = playlist_CurrentInput( p_playlist );
1110 /* XXX: if UpdateCaps() is called too early, these are
1111 * unconditionnaly true */
1112 if( var_GetBool( p_input, "can-pause" ) )
1113 i_caps |= CAPS_CAN_PAUSE;
1114 if( var_GetBool( p_input, "can-seek" ) )
1115 i_caps |= CAPS_CAN_SEEK;
1116 vlc_object_release( p_input );
1119 if( p_sys->b_meta_read )
1120 i_caps |= CAPS_CAN_PROVIDE_METADATA;
1122 if( i_caps != p_intf->p_sys->i_caps )
1124 p_sys->i_caps = i_caps;
1125 CapsChangeSignal( p_intf->p_sys->p_conn, (vlc_object_t*)p_intf );
1131 /*****************************************************************************
1132 * GetInputMeta: Fill a DBusMessage with the given input item metadata
1133 *****************************************************************************/
1135 #define ADD_META( entry, type, data ) \
1137 dbus_message_iter_open_container( &dict, DBUS_TYPE_DICT_ENTRY, \
1138 NULL, &dict_entry ); \
1139 dbus_message_iter_append_basic( &dict_entry, DBUS_TYPE_STRING, \
1140 &ppsz_meta_items[entry] ); \
1141 dbus_message_iter_open_container( &dict_entry, DBUS_TYPE_VARIANT, \
1142 type##_AS_STRING, &variant ); \
1143 dbus_message_iter_append_basic( &variant, \
1146 dbus_message_iter_close_container( &dict_entry, &variant ); \
1147 dbus_message_iter_close_container( &dict, &dict_entry ); }
1149 #define ADD_VLC_META_STRING( entry, item ) \
1151 char * psz = input_item_Get##item( p_input );\
1152 ADD_META( entry, DBUS_TYPE_STRING, \
1157 static int GetInputMeta( input_item_t* p_input,
1158 DBusMessageIter *args )
1160 DBusMessageIter dict, dict_entry, variant;
1161 /* We need the track length to be expressed in milli-seconds
1162 * instead of µ-seconds */
1163 dbus_int64_t i_length = ( input_item_GetDuration( p_input ) / 1000 );
1165 const char* ppsz_meta_items[] =
1167 "title", "artist", "genre", "copyright", "album", "tracknum",
1168 "description", "rating", "date", "setting", "url", "language",
1169 "nowplaying", "publisher", "encodedby", "arturl", "trackid",
1170 "status", "location", "length", "video-codec", "audio-codec",
1171 "video-bitrate", "audio-bitrate", "audio-samplerate"
1174 dbus_message_iter_open_container( args, DBUS_TYPE_ARRAY, "{sv}", &dict );
1176 ADD_VLC_META_STRING( 0, Title );
1177 ADD_VLC_META_STRING( 1, Artist );
1178 ADD_VLC_META_STRING( 2, Genre );
1179 ADD_VLC_META_STRING( 3, Copyright );
1180 ADD_VLC_META_STRING( 4, Album );
1181 ADD_VLC_META_STRING( 5, TrackNum );
1182 ADD_VLC_META_STRING( 6, Description );
1183 ADD_VLC_META_STRING( 7, Rating );
1184 ADD_VLC_META_STRING( 8, Date );
1185 ADD_VLC_META_STRING( 9, Setting );
1186 ADD_VLC_META_STRING( 10, URL );
1187 ADD_VLC_META_STRING( 11, Language );
1188 ADD_VLC_META_STRING( 12, NowPlaying );
1189 ADD_VLC_META_STRING( 13, Publisher );
1190 ADD_VLC_META_STRING( 14, EncodedBy );
1191 ADD_VLC_META_STRING( 15, ArtURL );
1192 ADD_VLC_META_STRING( 16, TrackID );
1194 vlc_mutex_lock( &p_input->lock );
1195 if( p_input->p_meta )
1197 int i_status = vlc_meta_GetStatus( p_input->p_meta );
1198 ADD_META( 17, DBUS_TYPE_INT32, i_status );
1200 vlc_mutex_unlock( &p_input->lock );
1202 ADD_VLC_META_STRING( 18, URI );
1203 ADD_META( 19, DBUS_TYPE_INT64, i_length );
1205 dbus_message_iter_close_container( args, &dict );
1210 #undef ADD_VLC_META_STRING
1212 /*****************************************************************************
1213 * MarshalStatus: Fill a DBusMessage with the current player status
1214 *****************************************************************************/
1216 static int MarshalStatus( intf_thread_t* p_intf, DBusMessageIter* args )
1217 { /* This is NOT the right way to do that, it would be better to sore
1218 the status information in p_sys and update it on change, thus
1219 avoiding a long lock */
1221 DBusMessageIter status;
1222 dbus_int32_t i_state, i_random, i_repeat, i_loop;
1224 playlist_t* p_playlist = p_intf->p_sys->p_playlist;
1225 input_thread_t* p_input = NULL;
1229 p_input = playlist_CurrentInput( p_playlist );
1232 i_val = var_GetInteger( p_input, "state" );
1233 if( i_val >= END_S )
1235 else if( i_val == PAUSE_S )
1237 else if( i_val <= PLAYING_S )
1239 vlc_object_release( p_input );
1242 i_random = var_CreateGetBool( p_playlist, "random" );
1244 i_repeat = var_CreateGetBool( p_playlist, "repeat" );
1246 i_loop = var_CreateGetBool( p_playlist, "loop" );
1248 dbus_message_iter_open_container( args, DBUS_TYPE_STRUCT, NULL, &status );
1249 dbus_message_iter_append_basic( &status, DBUS_TYPE_INT32, &i_state );
1250 dbus_message_iter_append_basic( &status, DBUS_TYPE_INT32, &i_random );
1251 dbus_message_iter_append_basic( &status, DBUS_TYPE_INT32, &i_repeat );
1252 dbus_message_iter_append_basic( &status, DBUS_TYPE_INT32, &i_loop );
1253 dbus_message_iter_close_container( args, &status );