/*****************************************************************************
* screensaver.c : disable screen savers when VLC is playing
*****************************************************************************
- * Copyright (C) 2003 VideoLAN
+ * 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>
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
#include <vlc/vlc.h>
-#include <vlc/intf.h>
-#include <vlc/aout.h>
-#include <vlc/vout.h>
+#include <vlc_plugin.h>
+#include <vlc_input.h>
+#include <vlc_interface.h>
+#include <vlc_aout.h>
+#include <vlc_vout.h>
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#ifdef HAVE_SIGNAL_H
+# include <signal.h>
+#endif
+
+#ifdef HAVE_DBUS
+
+#define DBUS_API_SUBJECT_TO_CHANGE
+#include <dbus/dbus.h>
+
+#define GS_SERVICE "org.gnome.ScreenSaver"
+#define GS_PATH "/org/gnome/ScreenSaver"
+#define GS_INTERFACE "org.gnome.ScreenSaver"
+
+#endif
+
+/* this is for dbus < 0.3 */
+#ifndef HAVE_DBUS_1
+#define dbus_bus_name_has_owner(connection, name, err) dbus_bus_service_exists(connection, name, err)
+#endif
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Activate ( vlc_object_t * );
+static void Deactivate ( vlc_object_t * );
+
static void Run ( intf_thread_t *p_intf );
+#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_name );
+static bool screensaver_is_running( DBusConnection *p_connection );
+
+
+struct intf_sys_t
+{
+ DBusConnection *p_connection;
+};
+
+#endif
+
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
- set_category( CAT_INTERFACE );
- set_subcategory( SUBCAT_INTERFACE_CONTROL );
- set_description( _("X Screensaver disabler") );
+ set_description( N_("X Screensaver disabler") );
set_capability( "interface", 0 );
- set_callbacks( Activate, NULL );
+ set_callbacks( Activate, Deactivate );
vlc_module_end();
/*****************************************************************************
p_intf->pf_run = Run;
+#ifdef HAVE_DBUS
+ p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
+ if( !p_intf->p_sys ) return VLC_ENOMEM;
+#endif
+
return VLC_SUCCESS;
}
+/*****************************************************************************
+ * Deactivate: uninitialize and cleanup
+ *****************************************************************************/
+static void Deactivate( vlc_object_t *p_this )
+{
+#ifdef HAVE_DBUS
+ intf_thread_t *p_intf = (intf_thread_t*)p_this;
+
+ if( p_intf->p_sys->p_connection )
+ {
+# ifdef HAVE_DBUS_2
+ dbus_connection_unref( p_intf->p_sys->p_connection );
+# else
+ dbus_connection_disconnect( p_intf->p_sys->p_connection );
+# endif
+ }
+
+ free( p_intf->p_sys );
+ p_intf->p_sys = NULL;
+#endif
+}
+
+/*****************************************************************************
+ * 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
*****************************************************************************
*****************************************************************************/
static void Run( intf_thread_t *p_intf )
{
- int i_lastcall = 0;
+ vlc_object_lock( p_intf );
- while( !p_intf->b_die )
+#ifdef HAVE_DBUS
+ p_intf->p_sys->p_connection = dbus_init( p_intf );
+#endif
+
+ while( vlc_object_alive( p_intf ) )
{
- msleep( 100000 );
+ vlc_object_t *p_vout;
/* Check screensaver every 30 seconds */
- if( ++i_lastcall > 300 )
+ if( vlc_object_timedwait( p_intf, mdate() + 30000000 ) < 0 )
+ continue;
+
+ 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_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 )
+ input_thread_t *p_input;
+ p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT, FIND_PARENT );
+ vlc_object_release( p_vout );
+ if( p_input )
{
- vlc_object_release( p_vout );
-
- /* http://www.jwz.org/xscreensaver/faq.html#dvd */
- system( "xscreensaver-command -deactivate >&- 2>&- &" );
+ if( PLAYING_S == p_input->i_state )
+ {
+ /* 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 );
- /* FIXME: add support for other screensavers */
+ /* 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 */
+ }
+ vlc_object_release( p_input );
}
-
- i_lastcall = 0;
}
}
+ vlc_object_unlock( p_intf );
+}
+
+#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 )
+ {
+ msg_Warn( p_intf, "failed to connect to the D-BUS daemon: %s",
+ dbus_error.message);
+ dbus_error_free( &dbus_error );
+ return NULL;
+ }
+
+ return p_connection;
+}
+
+static void poke_screensaver( intf_thread_t *p_intf,
+ DBusConnection *p_connection )
+{
+ if( screensaver_is_running( p_connection ) )
+ {
+# 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, "Poke" );
+ screensaver_send_message_void( p_intf, p_connection,
+ "SimulateUserActivity" );
+ }
+# ifdef SCREENSAVER_DEBUG
+ else
+ {
+ msg_Dbg( p_intf, "found no running gnome-screensaver instance" );
+ }
+# endif
}
+static void screensaver_send_message_void ( intf_thread_t *p_intf,
+ DBusConnection *p_connection,
+ const char *psz_name )
+{
+ DBusMessage *p_message;
+
+ if( !p_connection || !psz_name ) return;
+
+ p_message = dbus_message_new_method_call( GS_SERVICE, GS_PATH,
+ GS_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 )
+{
+ DBusError error;
+ bool b_return;
+
+ if( !p_connection ) return false;
+
+ dbus_error_init( &error );
+ b_return = dbus_bus_name_has_owner( p_connection, GS_SERVICE, &error );
+ if( dbus_error_is_set( &error ) ) dbus_error_free (&error);
+
+ return b_return;
+}
+
+#endif
+
projects / vlc / blobdiff