/*****************************************************************************
* screensaver.c : disable screen savers when VLC is playing
*****************************************************************************
- * Copyright (C) 2003 VideoLAN
- * $Id: screensaver.c,v 1.1 2003/02/06 03:22:08 sam Exp $
+ * Copyright (C) 2006 the VideoLAN team
+ * $Id$
*
* Authors: Sam Hocevar <sam@zoy.org>
+ * Benjamin Pracht <bigben AT videolan DOT org>
*
* 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
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <stdlib.h>
-#include <vlc/vlc.h>
-#include <vlc/intf.h>
-#include <vlc/aout.h>
-#include <vlc/vout.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_input.h>
+#include <vlc_playlist.h>
+#include <vlc_interface.h>
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <signal.h>
+
+#ifdef HAVE_DBUS
+
+#include <dbus/dbus.h>
+
+#define GS_SERVICE "org.gnome.ScreenSaver"
+#define GS_PATH "/org/gnome/ScreenSaver"
+#define GS_INTERFACE "org.gnome.ScreenSaver"
+
+#define FDS_SERVICE "org.freedesktop.ScreenSaver"
+#define FDS_PATH "/ScreenSaver"
+#define FDS_INTERFACE "org.freedesktop.ScreenSaver"
+
+#endif
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Activate ( vlc_object_t * );
-static void Run ( intf_thread_t *p_intf );
+static void Deactivate ( vlc_object_t * );
+
+static void Timer( void * );
+
+#ifdef HAVE_DBUS
+
+static DBusConnection * dbus_init( intf_thread_t *p_intf );
+static void poke_screensaver( intf_thread_t *p_intf,
+ DBusConnection *p_connection );
+static void screensaver_send_message_void ( intf_thread_t *p_intf,
+ DBusConnection *p_connection,
+ const char *psz_service,
+ const char *psz_path,
+ const char *psz_interface,
+ const char *psz_name );
+static bool screensaver_is_running( DBusConnection *p_connection, const char *psz_service );
+#endif
+
+struct intf_sys_t
+{
+#ifdef HAVE_DBUS
+ DBusConnection *p_connection;
+#endif
+ vlc_timer_t timer;
+};
+
/*****************************************************************************
* Module descriptor
*****************************************************************************/
-vlc_module_begin();
- set_description( _("screensaver disabling module") );
- set_capability( "interface", 0 );
- set_callbacks( Activate, NULL );
-vlc_module_end();
+vlc_module_begin ()
+ set_description( N_("X Screensaver disabler") )
+ set_capability( "interface", 0 )
+ set_callbacks( Activate, Deactivate )
+vlc_module_end ()
/*****************************************************************************
* Activate: initialize and create stuff
static int Activate( vlc_object_t *p_this )
{
intf_thread_t *p_intf = (intf_thread_t*)p_this;
+ intf_sys_t *p_sys;
- p_intf->pf_run = Run;
+ p_sys = p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
+ if( !p_sys )
+ return VLC_ENOMEM;
+ if( vlc_timer_create( &p_sys->timer, Timer, p_intf ) )
+ {
+ free( p_sys );
+ return VLC_ENOMEM;
+ }
+ vlc_timer_schedule( &p_sys->timer, false, 30*CLOCK_FREQ, 30*CLOCK_FREQ );
+
+#ifdef HAVE_DBUS
+ p_sys->p_connection = dbus_init( p_intf );
+#endif
return VLC_SUCCESS;
}
+/*****************************************************************************
+ * Deactivate: uninitialize and cleanup
+ *****************************************************************************/
+static void Deactivate( vlc_object_t *p_this )
+{
+ intf_thread_t *p_intf = (intf_thread_t*)p_this;
+ intf_sys_t *p_sys = p_intf->p_sys;
+
+ vlc_timer_destroy( &p_sys->timer );
+#ifdef HAVE_DBUS
+ if( p_sys->p_connection )
+ dbus_connection_unref( p_sys->p_connection );
+#endif
+
+ free( p_sys );
+}
+
+/*****************************************************************************
+ * Execute: Spawns a process using execv()
+ *****************************************************************************/
+static void Execute( intf_thread_t *p_this, const char *const *ppsz_args )
+{
+ pid_t pid = fork();
+ switch( pid )
+ {
+ case 0: /* we're the child */
+ {
+ sigset_t set;
+ sigemptyset (&set);
+ pthread_sigmask (SIG_SETMASK, &set, NULL);
+
+ /* We don't want output */
+ if( ( freopen( "/dev/null", "w", stdout ) != NULL )
+ && ( freopen( "/dev/null", "w", stderr ) != NULL ) )
+ execv( ppsz_args[0] , (char *const *)ppsz_args );
+ /* If the file we want to execute doesn't exist we exit() */
+ exit( EXIT_FAILURE );
+ }
+ case -1: /* we're the error */
+ msg_Dbg( p_this, "Couldn't fork() while launching %s",
+ ppsz_args[0] );
+ break;
+ default: /* we're the parent */
+ /* Wait for the child to exit.
+ * We will not deadlock because we ran "/bin/sh &" */
+ while( waitpid( pid, NULL, 0 ) != pid);
+ break;
+ }
+}
+
/*****************************************************************************
* Run: main thread
*****************************************************************************
* This part of the module is in a separate thread so that we do not have
* too much system() overhead.
*****************************************************************************/
-static void Run( intf_thread_t *p_intf )
+static void Timer( void *data )
{
- int i_lastcall = 0;
+ intf_thread_t *p_intf = data;
+ playlist_t *p_playlist = pl_Hold( p_intf );
+ input_thread_t *p_input = playlist_CurrentInput( p_playlist );
+ pl_Release( p_intf );
+ if( !p_input )
+ return;
+
+ vlc_object_t *p_vout;
+ if( var_GetInteger( p_input, "state" ) == PLAYING_S )
+ p_vout = (vlc_object_t *)input_GetVout( p_input );
+ else
+ p_vout = NULL;
+ vlc_object_release( p_input );
+ if( !p_vout )
+ return;
+ vlc_object_release( p_vout );
- while( !p_intf->b_die )
+ /* If there is a playing video output, disable xscreensaver */
+ /* http://www.jwz.org/xscreensaver/faq.html#dvd */
+ const char *const ppsz_xsargs[] = { "/bin/sh", "-c",
+ "xscreensaver-command -deactivate &", (char*)NULL };
+ Execute( p_intf, ppsz_xsargs );
+
+ /* If we have dbus support, let's communicate directly with
+ * gnome-screensave else, run gnome-screensaver-command */
+#ifdef HAVE_DBUS
+ poke_screensaver( p_intf, p_intf->p_sys->p_connection );
+#else
+ const char *const ppsz_gsargs[] = { "/bin/sh", "-c",
+ "gnome-screensaver-command --poke &", (char*)NULL };
+ Execute( p_intf, ppsz_gsargs );
+#endif
+ /* FIXME: add support for other screensavers */
+}
+
+#ifdef HAVE_DBUS
+
+static DBusConnection * dbus_init( intf_thread_t *p_intf )
+{
+ DBusError dbus_error;
+
+ dbus_error_init (&dbus_error);
+ DBusConnection * p_connection = dbus_bus_get( DBUS_BUS_SESSION, &dbus_error );
+
+ if ( !p_connection )
{
- msleep( 100000 );
+ msg_Warn( p_intf, "failed to connect to the D-BUS daemon: %s",
+ dbus_error.message);
+ dbus_error_free( &dbus_error );
+ return NULL;
+ }
- /* Check screensaver every 30 seconds */
- if( ++i_lastcall > 300 )
- {
- vlc_object_t *p_vout;
- p_vout = vlc_object_find( p_intf, VLC_OBJECT_VOUT, FIND_ANYWHERE );
- /* If there is a video output, disable xscreensaver */
- if( p_vout )
- {
- vlc_object_release( p_vout );
-
- /* http://www.jwz.org/xscreensaver/faq.html#dvd */
- system( "xscreensaver-command -deactivate >&- 2>&- &" );
-
- /* FIXME: add support for other screensavers */
- }
- }
+ return p_connection;
+}
+
+static void poke_screensaver( intf_thread_t *p_intf,
+ DBusConnection *p_connection )
+{
+ if( screensaver_is_running( p_connection, GS_SERVICE ) )
+ {
+# ifdef SCREENSAVER_DEBUG
+ msg_Dbg( p_intf, "found a running gnome-screensaver instance" );
+# endif
+ /* gnome-screensaver changed it's D-Bus interface, so we need both */
+ screensaver_send_message_void( p_intf, p_connection, GS_SERVICE, GS_PATH,
+ GS_INTERFACE, "Poke" );
+ screensaver_send_message_void( p_intf, p_connection, GS_SERVICE, GS_PATH,
+ GS_INTERFACE, "SimulateUserActivity" );
+ }
+ else if( screensaver_is_running( p_connection, FDS_SERVICE ) )
+ {
+# ifdef SCREENSAVER_DEBUG
+ msg_Dbg( p_intf, "found a running freedesktop-screensaver instance" );
+# endif
+ screensaver_send_message_void( p_intf, p_connection, FDS_SERVICE, FDS_PATH,
+ FDS_INTERFACE, "SimulateUserActivity" );
+ }
+# ifdef SCREENSAVER_DEBUG
+ else
+ {
+ msg_Dbg( p_intf, "found no running (gnome|freedesktop)-screensaver instance" );
+ }
+# endif
+
+}
+
+static void screensaver_send_message_void ( intf_thread_t *p_intf,
+ DBusConnection *p_connection,
+ const char *psz_service,
+ const char *psz_path,
+ const char *psz_interface,
+ const char *psz_name )
+{
+ DBusMessage *p_message;
+
+ if( !p_connection || !psz_name ) return;
+
+ p_message = dbus_message_new_method_call( psz_service, psz_path,
+ psz_interface, psz_name );
+ if( p_message == NULL )
+ {
+ msg_Err( p_intf, "DBUS initialization failed: message initialization" );
+ return;
+ }
+
+ if( !dbus_connection_send( p_connection, p_message, NULL ) )
+ {
+ msg_Err( p_intf, "DBUS communication failed" );
}
+
+ dbus_connection_flush( p_connection );
+
+ dbus_message_unref( p_message );
}
+static bool screensaver_is_running( DBusConnection *p_connection, const char *psz_service )
+{
+ DBusError error;
+ bool b_return;
+
+ if( !p_connection ) return false;
+
+ dbus_error_init( &error );
+ b_return = dbus_bus_name_has_owner( p_connection, psz_service, &error );
+ if( dbus_error_is_set( &error ) ) dbus_error_free (&error);
+
+ return b_return;
+}
+
+#endif
+
projects / vlc / blobdiff