+++ /dev/null
-/*****************************************************************************
- * telepathy.c : changes Telepathy Presence information using MissionControl
- *****************************************************************************
- * Copyright © 2007-2009 the VideoLAN team
- * $Id$
- *
- * Author: Rafaël Carré <funman@videoanorg>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
-
-/*****************************************************************************
- * Preamble
- *****************************************************************************/
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <vlc_common.h>
-#include <vlc_plugin.h>
-#include <vlc_interface.h>
-#include <vlc_playlist.h>
-#include <vlc_strings.h> /* str_format_meta */
-
-#include <dbus/dbus.h>
-
-#define FORMAT_DEFAULT "$a - $t"
-/*****************************************************************************
- * intf_sys_t: description and status of log interface
- *****************************************************************************/
-struct intf_sys_t
-{
- char *psz_format;
- DBusConnection *p_conn;
- int i_id;
- int i_item_changes;
-};
-
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-static int Open ( vlc_object_t * );
-static void Close ( vlc_object_t * );
-
-static int ItemChange( vlc_object_t *, const char *,
- vlc_value_t, vlc_value_t, void * );
-static int StateChange( vlc_object_t *, const char *,
- vlc_value_t, vlc_value_t, void * );
-static int SendToTelepathy( intf_thread_t *, const char * );
-
-/*****************************************************************************
- * Module descriptor
- *****************************************************************************/
-vlc_module_begin ()
- set_category( CAT_INTERFACE )
- set_subcategory( SUBCAT_INTERFACE_CONTROL )
- set_shortname( "Telepathy" )
- set_description( N_("Telepathy \"Now Playing\" (MissionControl)") )
-
- add_obsolete_string( "telepathy-format")
-
- set_capability( "interface", 0 )
- set_callbacks( Open, Close )
-vlc_module_end ()
-
-/*****************************************************************************
- * Open: initialize and create stuff
- *****************************************************************************/
-static int Open( vlc_object_t *p_this )
-{
- intf_thread_t *p_intf = (intf_thread_t *)p_this;
- playlist_t *p_playlist;
- DBusError error;
-
- p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
- if( !p_intf->p_sys )
- return VLC_ENOMEM;
-
- dbus_error_init( &error );
-
- /* connect privately to the session bus
- * the connection will not be shared with other vlc modules which use dbus,
- * thus avoiding a whole class of concurrency issues */
- p_intf->p_sys->p_conn = dbus_bus_get_private( DBUS_BUS_SESSION, &error );
- if( !p_intf->p_sys->p_conn )
- {
- msg_Err( p_this, "Failed to connect to the DBus session daemon: %s",
- error.message );
- dbus_error_free( &error );
- free( p_intf->p_sys );
- return VLC_EGENERIC;
- }
-
- p_intf->p_sys->psz_format = var_InheritString( p_intf, "input-title-format" );
- if( !p_intf->p_sys->psz_format )
- {
- p_intf->p_sys->psz_format = strdup( FORMAT_DEFAULT );
- }
- msg_Dbg( p_intf, "using format: %s", p_intf->p_sys->psz_format );
-
- p_intf->p_sys->i_id = -1;
-
- p_playlist = pl_Get( p_intf );
- var_AddCallback( p_playlist, "item-change", ItemChange, p_intf );
- var_AddCallback( p_playlist, "item-current", ItemChange, p_intf );
-
- return VLC_SUCCESS;
-}
-
-/*****************************************************************************
- * Close: destroy interface stuff
- *****************************************************************************/
-static void Close( vlc_object_t *p_this )
-{
- intf_thread_t *p_intf = (intf_thread_t *)p_this;
- playlist_t *p_playlist = pl_Get( p_this );
- input_thread_t *p_input = NULL;
-
- var_DelCallback( p_playlist, "item-change", ItemChange, p_intf );
- var_DelCallback( p_playlist, "item-current", ItemChange, p_intf );
- if( (p_input = playlist_CurrentInput( p_playlist )) )
- {
- var_DelCallback( p_input, "state", StateChange, p_intf );
- vlc_object_release( p_input );
- }
-
- /* Clears the Presence message ... else it looks like we're still playing
- * something although VLC (or the Telepathy plugin) is closed */
-
- /* Do not check for VLC_ENOMEM as we're closing */
- SendToTelepathy( p_intf, "" );
-
- /* The dbus connection is private,
- * so we are responsible for closing it */
- dbus_connection_close( p_intf->p_sys->p_conn );
- dbus_connection_unref( p_intf->p_sys->p_conn );
-
- /* Destroy structure */
- free( p_intf->p_sys->psz_format );
- free( p_intf->p_sys );
-}
-
-/*****************************************************************************
- * ItemChange: Playlist item change callback
- *****************************************************************************/
-static int ItemChange( vlc_object_t *p_this, const char *psz_var,
- vlc_value_t oldval, vlc_value_t newval, void *param )
-{
- VLC_UNUSED(oldval);
- intf_thread_t *p_intf = (intf_thread_t *)param;
- playlist_t* p_playlist = (playlist_t*) p_this;
- char *psz_buf = NULL;
- input_thread_t *p_input;
- input_item_t *p_item = newval.p_address;
- bool b_is_item_current = !strcmp( "item-current", psz_var );
-
- /* Don't update Telepathy presence each time an item has been preparsed */
- if( b_is_item_current )
- { /* stores the current input item id */
- p_intf->p_sys->i_id = p_item->i_id;
- p_intf->p_sys->i_item_changes = 0;
- }
- else
- {
-
- if( p_item->i_id != p_intf->p_sys->i_id ) /* "item-change" */
- return VLC_SUCCESS;
- /* Some variable bitrate inputs call "item-change callbacks each time
- * their length is updated, that is several times per second.
- * We'll limit the number of changes to 10 per input. */
- if( p_intf->p_sys->i_item_changes > 10 )
- return VLC_SUCCESS;
- p_intf->p_sys->i_item_changes++;
- }
-
- p_input = playlist_CurrentInput( p_playlist );
-
- if( !p_input ) return VLC_SUCCESS;
-
- if( p_input->b_dead || !input_GetItem(p_input)->psz_name )
- {
- vlc_object_release( p_input );
- /* Not playing anything ... */
- switch( SendToTelepathy( p_intf, "" ) )
- {
- case VLC_ENOMEM:
- return VLC_ENOMEM;
- default:
- return VLC_SUCCESS;
- }
- }
-
- if( b_is_item_current )
- var_AddCallback( p_input, "state", StateChange, p_intf );
-
- /* We format the string to be displayed */
- psz_buf = str_format_meta( (vlc_object_t*) p_intf,
- p_intf->p_sys->psz_format );
-
- /* We don't need the input anymore */
- vlc_object_release( p_input );
-
- if( SendToTelepathy( p_intf, psz_buf ) == VLC_ENOMEM )
- {
- free( psz_buf );
- return VLC_ENOMEM;
- }
- free( psz_buf );
- return VLC_SUCCESS;
-}
-
-/*****************************************************************************
- * StateChange: State change callback
- *****************************************************************************/
-static int StateChange( vlc_object_t *p_this, const char *psz_var,
- vlc_value_t oldval, vlc_value_t newval, void *param )
-{
- VLC_UNUSED(p_this); VLC_UNUSED(psz_var); VLC_UNUSED(oldval);
- intf_thread_t *p_intf = (intf_thread_t *)param;
- if( newval.i_int >= END_S )
- return SendToTelepathy( p_intf, "" );
- return VLC_SUCCESS;
-}
-
-/*****************************************************************************
- * SendToTelepathy
- *****************************************************************************/
-static int SendToTelepathy( intf_thread_t *p_intf, const char *psz_msg )
-{
- DBusConnection *p_conn;
- DBusMessage *p_msg;
- DBusMessage *p_reply;
- DBusMessageIter args;
- DBusError error;
- dbus_error_init( &error );
- dbus_uint32_t i_status;
-
- p_conn = p_intf->p_sys->p_conn;
-
- /* first we need to get the actual status */
- p_msg = dbus_message_new_method_call(
- "org.freedesktop.Telepathy.MissionControl",
- "/org/freedesktop/Telepathy/MissionControl",
- "org.freedesktop.Telepathy.MissionControl",
- "GetPresence" );
- if( !p_msg )
- return VLC_ENOMEM;
-
- p_reply = dbus_connection_send_with_reply_and_block( p_conn, p_msg,
- 50, &error ); /* blocks 50ms maximum */
-
- if( dbus_error_is_set( &error ) )
- dbus_error_free( &error );
-
- dbus_message_unref( p_msg );
- if( p_reply == NULL )
- { /* MC is not active, or too slow. Better luck next time? */
- return VLC_SUCCESS;
- }
-
- /* extract the status from the reply */
- if( dbus_message_get_args( p_reply, &error,
- DBUS_TYPE_UINT32, &i_status,
- DBUS_TYPE_INVALID ) == FALSE )
- {
- return VLC_ENOMEM;
- }
-
- p_msg = dbus_message_new_method_call(
- "org.freedesktop.Telepathy.MissionControl",
- "/org/freedesktop/Telepathy/MissionControl",
- "org.freedesktop.Telepathy.MissionControl",
- "SetPresence" );
- if( !p_msg )
- return VLC_ENOMEM;
-
- dbus_message_iter_init_append( p_msg, &args );
-
- /* first argument is the status */
- if( !dbus_message_iter_append_basic( &args, DBUS_TYPE_UINT32, &i_status ) )
- {
- dbus_message_unref( p_msg );
- return VLC_ENOMEM;
- }
- /* second argument is the message */
- if( !dbus_message_iter_append_basic( &args, DBUS_TYPE_STRING, &psz_msg ) )
- {
- dbus_message_unref( p_msg );
- return VLC_ENOMEM;
- }
-
-
- if( !dbus_connection_send( p_conn, p_msg, NULL ) )
- return VLC_ENOMEM;
-
- dbus_connection_flush( p_conn );
- dbus_message_unref( p_msg );
-
- return VLC_SUCCESS;
-}
projects / vlc / commitdiff