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 playlist_t *p_playlist = PL;
425 dbus_int32_t i_position = PL->i_current_index;
428 ADD_INT32( &i_position );
432 DBUS_METHOD( GetMetadata )
437 dbus_error_init( &error );
439 dbus_int32_t i_position;
440 playlist_t *p_playlist = PL;
442 dbus_message_get_args( p_from, &error,
443 DBUS_TYPE_INT32, &i_position,
446 if( dbus_error_is_set( &error ) )
448 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
450 dbus_error_free( &error );
451 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
455 if( i_position < p_playlist->current.i_size )
457 GetInputMeta( p_playlist->current.p_elems[i_position]->p_input, &args );
464 DBUS_METHOD( GetLength )
468 playlist_t *p_playlist = PL;
471 dbus_int32_t i_elements = PL->current.i_size;
474 ADD_INT32( &i_elements );
478 DBUS_METHOD( DelTrack )
483 dbus_error_init( &error );
485 dbus_int32_t i_position;
486 playlist_t *p_playlist = PL;
488 dbus_message_get_args( p_from, &error,
489 DBUS_TYPE_INT32, &i_position,
492 if( dbus_error_is_set( &error ) )
494 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
496 dbus_error_free( &error );
497 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
501 if( i_position < p_playlist->current.i_size )
503 playlist_DeleteFromInput( p_playlist,
504 p_playlist->current.p_elems[i_position]->p_input,
512 DBUS_METHOD( SetLoop )
520 dbus_error_init( &error );
521 dbus_message_get_args( p_from, &error,
522 DBUS_TYPE_BOOLEAN, &b_loop,
525 if( dbus_error_is_set( &error ) )
527 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
529 dbus_error_free( &error );
530 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
533 var_SetBool( PL, "loop", ( b_loop == TRUE ) );
538 DBUS_METHOD( Repeat )
544 dbus_bool_t b_repeat;
546 dbus_error_init( &error );
547 dbus_message_get_args( p_from, &error,
548 DBUS_TYPE_BOOLEAN, &b_repeat,
551 if( dbus_error_is_set( &error ) )
553 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
555 dbus_error_free( &error );
556 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
559 var_SetBool( PL, "repeat", ( b_repeat == TRUE ) );
564 DBUS_METHOD( SetRandom )
570 dbus_bool_t b_random;
572 dbus_error_init( &error );
573 dbus_message_get_args( p_from, &error,
574 DBUS_TYPE_BOOLEAN, &b_random,
577 if( dbus_error_is_set( &error ) )
579 msg_Err( (vlc_object_t*) p_this, "D-Bus message reading : %s",
581 dbus_error_free( &error );
582 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
585 var_SetBool( PL, "random", ( b_random == TRUE ) );
589 /*****************************************************************************
590 * Introspection method
591 *****************************************************************************/
593 DBUS_METHOD( handle_introspect_root )
594 { /* handles introspection of root object */
598 ADD_STRING( &psz_introspection_xml_data_root );
602 DBUS_METHOD( handle_introspect_player )
607 ADD_STRING( &psz_introspection_xml_data_player );
611 DBUS_METHOD( handle_introspect_tracklist )
616 ADD_STRING( &psz_introspection_xml_data_tracklist );
620 /*****************************************************************************
621 * handle_*: answer to incoming messages
622 *****************************************************************************/
624 #define METHOD_FUNC( method, function ) \
625 else if( dbus_message_is_method_call( p_from, MPRIS_DBUS_INTERFACE, method ) )\
626 return function( p_conn, p_from, p_this )
628 DBUS_METHOD( handle_root )
631 if( dbus_message_is_method_call( p_from,
632 DBUS_INTERFACE_INTROSPECTABLE, "Introspect" ) )
633 return handle_introspect_root( p_conn, p_from, p_this );
635 /* here D-Bus method's names are associated to an handler */
637 METHOD_FUNC( "Identity", Identity );
638 METHOD_FUNC( "MprisVersion", MprisVersion );
639 METHOD_FUNC( "Quit", Quit );
641 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
645 DBUS_METHOD( handle_player )
647 if( dbus_message_is_method_call( p_from,
648 DBUS_INTERFACE_INTROSPECTABLE, "Introspect" ) )
649 return handle_introspect_player( p_conn, p_from, p_this );
651 /* here D-Bus method's names are associated to an handler */
653 METHOD_FUNC( "Prev", Prev );
654 METHOD_FUNC( "Next", Next );
655 METHOD_FUNC( "Stop", Stop );
656 METHOD_FUNC( "Play", Play );
657 METHOD_FUNC( "Pause", Pause );
658 METHOD_FUNC( "Repeat", Repeat );
659 METHOD_FUNC( "VolumeSet", VolumeSet );
660 METHOD_FUNC( "VolumeGet", VolumeGet );
661 METHOD_FUNC( "PositionSet", PositionSet );
662 METHOD_FUNC( "PositionGet", PositionGet );
663 METHOD_FUNC( "GetStatus", GetStatus );
664 METHOD_FUNC( "GetMetadata", GetCurrentMetadata );
665 METHOD_FUNC( "GetCaps", GetCaps );
667 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
670 DBUS_METHOD( handle_tracklist )
672 if( dbus_message_is_method_call( p_from,
673 DBUS_INTERFACE_INTROSPECTABLE, "Introspect" ) )
674 return handle_introspect_tracklist( p_conn, p_from, p_this );
676 /* here D-Bus method's names are associated to an handler */
678 METHOD_FUNC( "GetMetadata", GetMetadata );
679 METHOD_FUNC( "GetCurrentTrack", GetCurrentTrack );
680 METHOD_FUNC( "GetLength", GetLength );
681 METHOD_FUNC( "AddTrack", AddTrack );
682 METHOD_FUNC( "DelTrack", DelTrack );
683 METHOD_FUNC( "SetLoop", SetLoop );
684 METHOD_FUNC( "SetRandom", SetRandom );
686 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
689 /*****************************************************************************
690 * Open: initialize interface
691 *****************************************************************************/
693 static int Open( vlc_object_t *p_this )
694 { /* initialisation of the connection */
695 intf_thread_t *p_intf = (intf_thread_t*)p_this;
696 intf_sys_t *p_sys = malloc( sizeof( intf_sys_t ) );
697 playlist_t *p_playlist;
698 DBusConnection *p_conn;
704 p_sys->b_meta_read = false;
705 p_sys->i_caps = CAPS_NONE;
706 p_sys->b_dead = false;
708 dbus_error_init( &error );
710 /* connect to the session bus */
711 p_conn = dbus_bus_get( DBUS_BUS_SESSION, &error );
714 msg_Err( p_this, "Failed to connect to the D-Bus session daemon: %s",
716 dbus_error_free( &error );
721 /* register a well-known name on the bus */
722 dbus_bus_request_name( p_conn, VLC_MPRIS_DBUS_SERVICE, 0, &error );
723 if( dbus_error_is_set( &error ) )
725 msg_Err( p_this, "Error requesting service " VLC_MPRIS_DBUS_SERVICE
726 ": %s", error.message );
727 dbus_error_free( &error );
732 /* we register the objects */
733 dbus_connection_register_object_path( p_conn, MPRIS_DBUS_ROOT_PATH,
734 &vlc_dbus_root_vtable, p_this );
735 dbus_connection_register_object_path( p_conn, MPRIS_DBUS_PLAYER_PATH,
736 &vlc_dbus_player_vtable, p_this );
737 dbus_connection_register_object_path( p_conn, MPRIS_DBUS_TRACKLIST_PATH,
738 &vlc_dbus_tracklist_vtable, p_this );
740 dbus_connection_flush( p_conn );
742 p_intf->pf_run = Run;
743 p_intf->p_sys = p_sys;
744 p_sys->p_conn = p_conn;
745 p_sys->p_events = vlc_array_new();
746 vlc_mutex_init( &p_sys->lock );
748 p_playlist = pl_Get( p_intf );
749 p_sys->p_playlist = p_playlist;
751 var_AddCallback( p_playlist, "item-current", AllCallback, p_intf );
752 var_AddCallback( p_playlist, "intf-change", AllCallback, p_intf );
753 var_AddCallback( p_playlist, "playlist-item-append", AllCallback, p_intf );
754 var_AddCallback( p_playlist, "playlist-item-deleted", AllCallback, p_intf );
755 var_AddCallback( p_playlist, "random", AllCallback, p_intf );
756 var_AddCallback( p_playlist, "repeat", AllCallback, p_intf );
757 var_AddCallback( p_playlist, "loop", AllCallback, p_intf );
759 UpdateCaps( p_intf );
764 /*****************************************************************************
765 * Close: destroy interface
766 *****************************************************************************/
768 static void Close ( vlc_object_t *p_this )
770 intf_thread_t *p_intf = (intf_thread_t*) p_this;
771 intf_sys_t *p_sys = p_intf->p_sys;
772 playlist_t *p_playlist = p_sys->p_playlist;
773 input_thread_t *p_input;
775 var_DelCallback( p_playlist, "item-current", AllCallback, p_intf );
776 var_DelCallback( p_playlist, "intf-change", AllCallback, p_intf );
777 var_DelCallback( p_playlist, "playlist-item-append", AllCallback, p_intf );
778 var_DelCallback( p_playlist, "playlist-item-deleted", AllCallback, p_intf );
779 var_DelCallback( p_playlist, "random", AllCallback, p_intf );
780 var_DelCallback( p_playlist, "repeat", AllCallback, p_intf );
781 var_DelCallback( p_playlist, "loop", AllCallback, p_intf );
787 var_DelCallback( p_input, "state", AllCallback, p_intf );
788 vlc_object_release( p_input );
791 dbus_connection_unref( p_sys->p_conn );
793 // Free the events array
794 for( int i = 0; i < vlc_array_count( p_sys->p_events ); i++ )
796 callback_info_t* info = vlc_array_item_at_index( p_sys->p_events, i );
799 vlc_mutex_destroy( &p_sys->lock );
800 vlc_array_destroy( p_sys->p_events );
804 /*****************************************************************************
806 *****************************************************************************/
808 static void Run ( intf_thread_t *p_intf )
812 if( dbus_connection_get_dispatch_status(p_intf->p_sys->p_conn)
813 == DBUS_DISPATCH_COMPLETE )
814 msleep( INTF_IDLE_SLEEP );
815 int canc = vlc_savecancel();
816 dbus_connection_read_write_dispatch( p_intf->p_sys->p_conn, 0 );
818 /* Get the list of events to process
820 * We can't keep the lock on p_intf->p_sys->p_events, else we risk a
822 * The signal functions could lock mutex X while p_events is locked;
823 * While some other function in vlc (playlist) might lock mutex X
824 * and then set a variable which would call AllCallback(), which itself
825 * needs to lock p_events to add a new event.
827 vlc_mutex_lock( &p_intf->p_sys->lock );
828 int i_events = vlc_array_count( p_intf->p_sys->p_events );
829 callback_info_t* info[i_events];
830 for( int i = i_events - 1; i >= 0; i-- )
832 info[i] = vlc_array_item_at_index( p_intf->p_sys->p_events, i );
833 vlc_array_remove( p_intf->p_sys->p_events, i );
835 vlc_mutex_unlock( &p_intf->p_sys->lock );
837 for( int i = 0; i < i_events; i++ )
839 switch( info[i]->signal )
841 case SIGNAL_ITEM_CURRENT:
842 TrackChange( p_intf );
844 case SIGNAL_INTF_CHANGE:
845 case SIGNAL_PLAYLIST_ITEM_APPEND:
846 case SIGNAL_PLAYLIST_ITEM_DELETED:
847 TrackListChangeEmit( p_intf, info[i]->signal, info[i]->i_node );
852 StatusChangeEmit( p_intf );
855 StateChange( p_intf, info[i]->i_input_state );
862 vlc_restorecancel( canc );
867 // Get all the callbacks
868 static int AllCallback( vlc_object_t *p_this, const char *psz_var,
869 vlc_value_t oldval, vlc_value_t newval, void *p_data )
873 intf_thread_t *p_intf = (intf_thread_t*)p_data;
875 callback_info_t *info = malloc( sizeof( callback_info_t ) );
879 // Wich event is it ?
880 if( !strcmp( "item-current", psz_var ) )
881 info->signal = SIGNAL_ITEM_CURRENT;
882 else if( !strcmp( "intf-change", psz_var ) )
883 info->signal = SIGNAL_INTF_CHANGE;
884 else if( !strcmp( "playlist-item-append", psz_var ) )
886 info->signal = SIGNAL_PLAYLIST_ITEM_APPEND;
887 info->i_node = ((playlist_add_t*)newval.p_address)->i_node;
889 else if( !strcmp( "playlist-item-deleted", psz_var ) )
890 info->signal = SIGNAL_PLAYLIST_ITEM_DELETED;
891 else if( !strcmp( "random", psz_var ) )
892 info->signal = SIGNAL_RANDOM;
893 else if( !strcmp( "repeat", psz_var ) )
894 info->signal = SIGNAL_REPEAT;
895 else if( !strcmp( "loop", psz_var ) )
896 info->signal = SIGNAL_LOOP;
897 else if( !strcmp( "state", psz_var ) )
899 info->signal = SIGNAL_STATE;
900 info->i_input_state = newval.i_int;
906 vlc_mutex_lock( &p_intf->p_sys->lock );
907 vlc_array_append( p_intf->p_sys->p_events, info );
908 vlc_mutex_unlock( &p_intf->p_sys->lock );
912 /******************************************************************************
913 * CapsChange: player capabilities change signal
914 *****************************************************************************/
915 DBUS_SIGNAL( CapsChangeSignal )
917 SIGNAL_INIT( MPRIS_DBUS_PLAYER_PATH, "CapsChange" );
920 ADD_INT32( &((intf_thread_t*)p_data)->p_sys->i_caps );
924 /******************************************************************************
925 * TrackListChange: tracklist order / length change signal
926 *****************************************************************************/
927 DBUS_SIGNAL( TrackListChangeSignal )
928 { /* emit the new tracklist lengh */
929 SIGNAL_INIT( MPRIS_DBUS_TRACKLIST_PATH, "TrackListChange");
933 dbus_int32_t i_elements = ((intf_thread_t*)p_data)->p_sys->p_playlist->current.i_size;
935 ADD_INT32( &i_elements );
939 /*****************************************************************************
940 * TrackListChangeEmit: Emits the TrackListChange signal
941 *****************************************************************************/
942 /* FIXME: It is not called on tracklist reordering */
943 static int TrackListChangeEmit( intf_thread_t *p_intf, int signal, int i_node )
945 // "playlist-item-append"
946 if( signal == SIGNAL_PLAYLIST_ITEM_APPEND )
948 /* don't signal when items are added/removed in p_category */
949 playlist_t *p_playlist = p_intf->p_sys->p_playlist;
951 playlist_item_t *p_item = playlist_ItemGetById( p_playlist, i_node );
953 while( p_item->p_parent )
954 p_item = p_item->p_parent;
955 if( p_item == p_playlist->p_root_category )
963 if( p_intf->p_sys->b_dead )
966 UpdateCaps( p_intf );
967 TrackListChangeSignal( p_intf->p_sys->p_conn, p_intf );
970 /*****************************************************************************
971 * TrackChange: Playlist item change callback
972 *****************************************************************************/
974 DBUS_SIGNAL( TrackChangeSignal )
975 { /* emit the metadata of the new item */
976 SIGNAL_INIT( MPRIS_DBUS_PLAYER_PATH, "TrackChange" );
979 input_item_t *p_item = (input_item_t*) p_data;
980 GetInputMeta ( p_item, &args );
985 /*****************************************************************************
986 * StatusChange: Player status change signal
987 *****************************************************************************/
989 DBUS_SIGNAL( StatusChangeSignal )
990 { /* send the updated status info on the bus */
991 SIGNAL_INIT( MPRIS_DBUS_PLAYER_PATH, "StatusChange" );
994 /* we're called from a callback of input_thread_t, so it can not be
995 * destroyed before we return */
996 MarshalStatus( (intf_thread_t*) p_data, &args );
1001 /*****************************************************************************
1002 * StateChange: callback on input "state"
1003 *****************************************************************************/
1004 //static int StateChange( vlc_object_t *p_this, const char* psz_var,
1005 // vlc_value_t oldval, vlc_value_t newval, void *p_data )
1006 static int StateChange( intf_thread_t *p_intf, int i_input_state )
1008 intf_sys_t *p_sys = p_intf->p_sys;
1009 playlist_t *p_playlist = p_sys->p_playlist;
1010 input_thread_t *p_input;
1011 input_item_t *p_item;
1013 if( p_intf->p_sys->b_dead )
1016 UpdateCaps( p_intf );
1018 if( !p_sys->b_meta_read && i_input_state == PLAYING_S )
1020 p_input = playlist_CurrentInput( p_playlist );
1023 p_item = input_GetItem( p_input );
1026 p_sys->b_meta_read = true;
1027 TrackChangeSignal( p_sys->p_conn, p_item );
1029 vlc_object_release( p_input );
1033 if( i_input_state == PLAYING_S || i_input_state == PAUSE_S ||
1034 i_input_state == END_S )
1036 StatusChangeSignal( p_sys->p_conn, p_intf );
1042 /*****************************************************************************
1043 * StatusChangeEmit: Emits the StatusChange signal
1044 *****************************************************************************/
1045 static int StatusChangeEmit( intf_thread_t * p_intf )
1047 if( p_intf->p_sys->b_dead )
1050 UpdateCaps( p_intf );
1051 StatusChangeSignal( p_intf->p_sys->p_conn, p_intf );
1055 /*****************************************************************************
1056 * TrackChange: callback on playlist "item-current"
1057 *****************************************************************************/
1058 static int TrackChange( intf_thread_t *p_intf )
1060 intf_sys_t *p_sys = p_intf->p_sys;
1061 playlist_t *p_playlist = p_sys->p_playlist;
1062 input_thread_t *p_input = NULL;
1063 input_item_t *p_item = NULL;
1065 if( p_intf->p_sys->b_dead )
1068 p_sys->b_meta_read = false;
1070 p_input = playlist_CurrentInput( p_playlist );
1076 p_item = input_GetItem( p_input );
1079 vlc_object_release( p_input );
1080 return VLC_EGENERIC;
1083 if( input_item_IsPreparsed( p_item ) )
1085 p_sys->b_meta_read = true;
1086 TrackChangeSignal( p_sys->p_conn, p_item );
1090 var_AddCallback( p_input, "state", AllCallback, p_intf );
1095 /*****************************************************************************
1096 * UpdateCaps: update p_sys->i_caps
1097 * This function have to be called with the playlist unlocked
1098 ****************************************************************************/
1099 static int UpdateCaps( intf_thread_t* p_intf )
1101 intf_sys_t* p_sys = p_intf->p_sys;
1102 dbus_int32_t i_caps = CAPS_CAN_HAS_TRACKLIST;
1103 playlist_t* p_playlist = p_sys->p_playlist;
1106 if( p_playlist->current.i_size > 0 )
1107 i_caps |= CAPS_CAN_PLAY | CAPS_CAN_GO_PREV | CAPS_CAN_GO_NEXT;
1110 input_thread_t* p_input = playlist_CurrentInput( p_playlist );
1113 /* XXX: if UpdateCaps() is called too early, these are
1114 * unconditionnaly true */
1115 if( var_GetBool( p_input, "can-pause" ) )
1116 i_caps |= CAPS_CAN_PAUSE;
1117 if( var_GetBool( p_input, "can-seek" ) )
1118 i_caps |= CAPS_CAN_SEEK;
1119 vlc_object_release( p_input );
1122 if( p_sys->b_meta_read )
1123 i_caps |= CAPS_CAN_PROVIDE_METADATA;
1125 if( i_caps != p_intf->p_sys->i_caps )
1127 p_sys->i_caps = i_caps;
1128 CapsChangeSignal( p_intf->p_sys->p_conn, (vlc_object_t*)p_intf );
1134 /*****************************************************************************
1135 * GetInputMeta: Fill a DBusMessage with the given input item metadata
1136 *****************************************************************************/
1138 #define ADD_META( entry, type, data ) \
1140 dbus_message_iter_open_container( &dict, DBUS_TYPE_DICT_ENTRY, \
1141 NULL, &dict_entry ); \
1142 dbus_message_iter_append_basic( &dict_entry, DBUS_TYPE_STRING, \
1143 &ppsz_meta_items[entry] ); \
1144 dbus_message_iter_open_container( &dict_entry, DBUS_TYPE_VARIANT, \
1145 type##_AS_STRING, &variant ); \
1146 dbus_message_iter_append_basic( &variant, \
1149 dbus_message_iter_close_container( &dict_entry, &variant ); \
1150 dbus_message_iter_close_container( &dict, &dict_entry ); }
1152 #define ADD_VLC_META_STRING( entry, item ) \
1154 char * psz = input_item_Get##item( p_input );\
1155 ADD_META( entry, DBUS_TYPE_STRING, \
1160 static int GetInputMeta( input_item_t* p_input,
1161 DBusMessageIter *args )
1163 DBusMessageIter dict, dict_entry, variant;
1164 /** The duration of the track can be expressed in second, milli-seconds and
1166 dbus_int64_t i_mtime = input_item_GetDuration( p_input );
1167 dbus_uint32_t i_time = i_mtime / 1000000;
1168 dbus_int64_t i_length = i_mtime / 1000;
1170 const char* ppsz_meta_items[] =
1172 /* Official MPRIS metas */
1173 "location", "title", "artist", "album", "tracknumber", "time", "mtime",
1174 "genre", "rating", "date", "arturl",
1175 "audio-bitrate", "audio-samplerate", "video-bitrate",
1176 /* VLC specifics metas */
1177 "audio-codec", "copyright", "description", "encodedby", "language", "length",
1178 "nowplaying", "publisher", "setting", "status", "trackid", "url",
1182 dbus_message_iter_open_container( args, DBUS_TYPE_ARRAY, "{sv}", &dict );
1184 ADD_VLC_META_STRING( 0, URI );
1185 ADD_VLC_META_STRING( 1, Title );
1186 ADD_VLC_META_STRING( 2, Artist );
1187 ADD_VLC_META_STRING( 3, Album );
1188 ADD_VLC_META_STRING( 4, TrackNum );
1189 ADD_META( 5, DBUS_TYPE_UINT32, i_time );
1190 ADD_META( 6, DBUS_TYPE_UINT32, i_mtime );
1191 ADD_VLC_META_STRING( 7, Genre );
1192 ADD_VLC_META_STRING( 8, Rating );
1193 ADD_VLC_META_STRING( 9, Date );
1194 ADD_VLC_META_STRING( 10, ArtURL );
1196 ADD_VLC_META_STRING( 15, Copyright );
1197 ADD_VLC_META_STRING( 16, Description );
1198 ADD_VLC_META_STRING( 17, EncodedBy );
1199 ADD_VLC_META_STRING( 18, Language );
1200 ADD_META( 19, DBUS_TYPE_INT64, i_length );
1201 ADD_VLC_META_STRING( 20, NowPlaying );
1202 ADD_VLC_META_STRING( 21, Publisher );
1203 ADD_VLC_META_STRING( 22, Setting );
1204 ADD_VLC_META_STRING( 24, TrackID );
1205 ADD_VLC_META_STRING( 25, URL );
1207 vlc_mutex_lock( &p_input->lock );
1208 if( p_input->p_meta )
1210 int i_status = vlc_meta_GetStatus( p_input->p_meta );
1211 ADD_META( 23, DBUS_TYPE_INT32, i_status );
1213 vlc_mutex_unlock( &p_input->lock );
1215 dbus_message_iter_close_container( args, &dict );
1220 #undef ADD_VLC_META_STRING
1222 /*****************************************************************************
1223 * MarshalStatus: Fill a DBusMessage with the current player status
1224 *****************************************************************************/
1226 static int MarshalStatus( intf_thread_t* p_intf, DBusMessageIter* args )
1227 { /* This is NOT the right way to do that, it would be better to sore
1228 the status information in p_sys and update it on change, thus
1229 avoiding a long lock */
1231 DBusMessageIter status;
1232 dbus_int32_t i_state, i_random, i_repeat, i_loop;
1234 playlist_t* p_playlist = p_intf->p_sys->p_playlist;
1235 input_thread_t* p_input = NULL;
1239 p_input = playlist_CurrentInput( p_playlist );
1242 i_val = var_GetInteger( p_input, "state" );
1243 if( i_val >= END_S )
1245 else if( i_val == PAUSE_S )
1247 else if( i_val <= PLAYING_S )
1249 vlc_object_release( p_input );
1252 i_random = var_CreateGetBool( p_playlist, "random" );
1254 i_repeat = var_CreateGetBool( p_playlist, "repeat" );
1256 i_loop = var_CreateGetBool( p_playlist, "loop" );
1258 dbus_message_iter_open_container( args, DBUS_TYPE_STRUCT, NULL, &status );
1259 dbus_message_iter_append_basic( &status, DBUS_TYPE_INT32, &i_state );
1260 dbus_message_iter_append_basic( &status, DBUS_TYPE_INT32, &i_random );
1261 dbus_message_iter_append_basic( &status, DBUS_TYPE_INT32, &i_repeat );
1262 dbus_message_iter_append_basic( &status, DBUS_TYPE_INT32, &i_loop );
1263 dbus_message_iter_close_container( args, &status );