--- /dev/null
+/*****************************************************************************
+ * telepathy.c : changes Telepathy Presence information using MissionControl
+ *****************************************************************************
+ * Copyright © 2007 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
+ *****************************************************************************/
+
+#include <vlc/vlc.h>
+#include <vlc_interface.h>
+#include <vlc_meta.h>
+#include <vlc_playlist.h>
+#include <vlc_strings.h>
+#include <dbus/dbus.h>
+
+/*****************************************************************************
+ * intf_sys_t: description and status of log interface
+ *****************************************************************************/
+struct intf_sys_t
+{
+ char *psz_format;
+ DBusConnection *p_conn;
+};
+
+/*****************************************************************************
+ * 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 SendToTelepathy( intf_thread_t *, const char * );
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+#define FORMAT_DEFAULT "$a - $t"
+#define FORMAT_TEXT N_("Title format string")
+#define FORMAT_LONGTEXT N_("Format of the string to send to Telepathy." \
+"Defaults to \"Artist - Title\" ($a - $t)." \
+"You can use the following substitutions: " \
+"$a Artist, $b Album, $c, Copyright, $d Description, $e Encoder, $g Genre, " \
+"$l Language, $n number, $p Now Playing, $r Rating, $s Subtitles language, " \
+"$t Title, $u URL, $A Date, $B Bitrate, $C Chapter, $D Duration, $F URI, " \
+"$I Video Title, $L Time Remaining, $N Name, $O Audio language, $P Position, " \
+"$R Rate, $S Sample rate, $T Time elapsed, $U Publisher, $V Volume")
+
+vlc_module_begin();
+ set_category( CAT_INTERFACE );
+ set_subcategory( SUBCAT_INTERFACE_CONTROL );
+ set_shortname( "Telepathy" );
+ set_description( _("Telepathy « Now Playing » using MissionControl") );
+
+ add_string( "telepathy-format", FORMAT_DEFAULT, NULL,
+ FORMAT_TEXT, FORMAT_LONGTEXT, VLC_FALSE );
+
+ 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;
+ DBusConnection *p_conn;
+ DBusError error;
+
+ MALLOC_ERR( p_intf->p_sys, intf_sys_t );
+
+ p_intf->p_sys->psz_format = config_GetPsz( p_intf, "telepathy-format" );
+ if( !p_intf->p_sys->psz_format )
+ {
+ msg_Dbg( p_intf, "no format provided" );
+ p_intf->p_sys->psz_format = strdup( FORMAT_DEFAULT );
+ }
+ msg_Dbg( p_intf, "using format: %s", p_intf->p_sys->psz_format );
+
+ p_playlist = pl_Yield( p_intf );
+ var_AddCallback( p_playlist, "item-change", ItemChange, p_intf );
+ var_AddCallback( p_playlist, "playlist-current", ItemChange, p_intf );
+ pl_Release( p_intf );
+
+ dbus_threads_init_default();
+
+ dbus_error_init( &error );
+
+ /* connect to the session bus */
+ p_conn = dbus_bus_get( DBUS_BUS_SESSION, &error );
+ if( !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->p_conn = p_conn;
+ 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_Yield( p_this );
+
+ /* 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, "" );
+
+ var_DelCallback( p_playlist, "item-change", ItemChange, p_intf );
+ var_DelCallback( p_playlist, "playlist-current", ItemChange, p_intf );
+ pl_Release( p_this );
+
+ /* we won't use the DBus connection anymore */
+ 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 )
+{
+ intf_thread_t *p_intf = (intf_thread_t *)param;
+ char *psz_buf = NULL;
+ input_thread_t *p_input;
+ playlist_t *p_playlist = pl_Yield( p_this );
+
+ p_input = p_playlist->p_input;
+ pl_Release( p_this );
+
+ if( !p_input ) return VLC_SUCCESS;
+ vlc_object_yield( p_input );
+
+ 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:
+ Close( p_this );
+ return VLC_ENOMEM;
+ default:
+ return VLC_SUCCESS;
+ }
+ }
+
+ /* We format the string to be displayed */
+ psz_buf = str_format_meta( p_this, 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 );
+ Close( p_this );
+ return VLC_ENOMEM;
+ }
+ free( psz_buf );
+ 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,
+ 1000, &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