/*****************************************************************************
* screensaver.c : disable screen savers when VLC is playing
*****************************************************************************
- * Copyright (C) 2006 the VideoLAN team
+ * Copyright (C) 2006-2009 the VideoLAN team
* $Id$
*
* Authors: Sam Hocevar <sam@zoy.org>
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <stdlib.h>
-
-#include <vlc/vlc.h>
-#include <vlc/intf.h>
-#include <vlc/aout.h>
-#include <vlc/vout.h>
-
-#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"
+#ifdef HAVE_CONFIG_H
+# include "config.h"
#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
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_inhibit.h>
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <signal.h>
/*****************************************************************************
* 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 vlc_bool_t screensaver_is_running( DBusConnection *p_connection );
-
+static void Timer( void * );
+static void Inhibit( vlc_inhibit_t *, bool );
-struct intf_sys_t
+struct vlc_inhibit_sys
{
- DBusConnection *p_connection;
+ vlc_timer_t timer;
};
-#endif
/*****************************************************************************
* Module descriptor
*****************************************************************************/
-vlc_module_begin();
- set_description( _("X Screensaver disabler") );
- set_capability( "interface", 0 );
- set_callbacks( Activate, Deactivate );
-vlc_module_end();
+vlc_module_begin ()
+ set_description( N_("X Screensaver disabler") )
+ set_capability( "inhibit", 5 )
+ 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;
+ vlc_inhibit_t *p_ih = (vlc_inhibit_t*)p_this;
+ vlc_inhibit_sys_t *p_sys;
- p_intf->pf_run = Run;
+ p_sys = p_ih->p_sys = malloc( sizeof( *p_sys ) );
+ if( !p_sys )
+ return VLC_ENOMEM;
-#ifdef HAVE_DBUS
- p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
- if( !p_intf->p_sys ) return VLC_ENOMEM;
-#endif
+ if( vlc_timer_create( &p_sys->timer, Timer, p_ih ) )
+ {
+ free( p_sys );
+ return VLC_ENOMEM;
+ }
+ p_ih->inhibit = Inhibit;
return VLC_SUCCESS;
}
*****************************************************************************/
static void Deactivate( vlc_object_t *p_this )
{
-#ifdef HAVE_DBUS
- intf_thread_t *p_intf = (intf_thread_t*)p_this;
+ vlc_inhibit_t *p_ih = (vlc_inhibit_t*)p_this;
+ vlc_inhibit_sys_t *p_sys = p_ih->p_sys;
- if( p_intf->p_sys->p_connection )
- {
-# ifdef HAVE_DBUS_2
- dbus_connection_close( p_intf->p_sys->p_connection );
-# else
- dbus_connection_disconnect( p_intf->p_sys->p_connection );
-# endif
- }
+ vlc_timer_destroy( p_sys->timer );
- if( p_intf->p_sys )
- {
- free( p_intf->p_sys );
- p_intf->p_sys = NULL;
- }
-#endif
+ free( p_sys );
}
+static void Inhibit( vlc_inhibit_t *p_ih, bool suspend )
+{
+ mtime_t d = suspend ? 30*CLOCK_FREQ : 0;
+ vlc_timer_schedule( p_ih->p_sys->timer, false, d, d );
+}
/*****************************************************************************
- * Run: main thread
- *****************************************************************************
- * This part of the module is in a separate thread so that we do not have
- * too much system() overhead.
+ * Execute: Spawns a process using execv()
*****************************************************************************/
-static void Run( intf_thread_t *p_intf )
+static void Execute( vlc_object_t *p_this, const char *const *ppsz_args )
{
- int i_lastcall = 0;
-
-#ifdef HAVE_DBUS
- p_intf->p_sys->p_connection = dbus_init( p_intf );
-#endif
-
- while( !p_intf->b_die )
+ pid_t pid = fork();
+ switch( pid )
{
- msleep( 100000 );
-
- /* Check screensaver every 30 seconds */
- if( ++i_lastcall > 300 )
+ case 0: /* we're the child */
{
- 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>&- &" );
-
-/* If we have dbug support, let's communicate directly with gnome-screensaver
- else, run gnome-screensaver-command */
-#ifdef HAVE_DBUS
- poke_screensaver( p_intf, p_intf->p_sys->p_connection );
-#else
- system( "gnome-screensaver-command --poke >&- 2>&- &" );
-#endif
- /* FIXME: add support for other screensavers */
- }
-
- i_lastcall = 0;
+ 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;
}
}
-#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
- screensaver_send_message_void( p_intf, p_connection, "Poke" );
- }
-# 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 vlc_bool_t screensaver_is_running( DBusConnection *p_connection )
+/*****************************************************************************
+ * 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 Timer( void *data )
{
- DBusError error;
- vlc_bool_t b_return;
+ vlc_inhibit_t *p_ih = data;
- if( !p_connection ) return VLC_FALSE;
+ /* 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( VLC_OBJECT(p_ih), ppsz_xsargs );
- 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;
+ const char *const ppsz_gsargs[] = { "/bin/sh", "-c",
+ "gnome-screensaver-command --poke &", (char*)NULL };
+ Execute( VLC_OBJECT(p_ih), ppsz_gsargs );
}
-
-#endif
-