+ if( !WSAStartup( MAKEWORD( 2, 2 ), &Data ) )
+ {
+ /* Aah, pretty useless check, we should always have Winsock 2.2
+ * since it appeared in Win98. */
+ if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 2 )
+ /* We could not find a suitable WinSock DLL. */
+ WSACleanup( );
+ else
+ /* Everything went ok. */
+ return;
+ }
+
+ /* Let's try with WinSock 1.1 */
+ if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
+ {
+ /* Confirm that the WinSock DLL supports 1.1.*/
+ if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
+ /* We could not find a suitable WinSock DLL. */
+ WSACleanup( );
+ else
+ /* Everything went ok. */
+ return;
+ }
+
+ fprintf( stderr, "error: can't initialize WinSocks\n" );
+}
+
+/*****************************************************************************
+ * system_Configure: check for system specific configuration options.
+ *****************************************************************************/
+static void IPCHelperThread( vlc_object_t * );
+LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
+typedef struct
+{
+ int argc;
+ int enqueue;
+ char data[0];
+} vlc_ipc_data_t;
+
+void system_Configure( libvlc_int_t *p_this, int *pi_argc, const char *ppsz_argv[] )
+{
+#if !defined( UNDER_CE )
+ /* Raise default priority of the current process */
+#ifndef ABOVE_NORMAL_PRIORITY_CLASS
+# define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
+#endif
+ if( config_GetInt( p_this, "high-priority" ) )
+ {
+ if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
+ || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
+ {
+ msg_Dbg( p_this, "raised process priority" );
+ }
+ else
+ {
+ msg_Dbg( p_this, "could not raise process priority" );
+ }
+ }
+
+ libvlc_priv (p_this)->ipc_helper = NULL;
+
+ if( config_GetInt( p_this, "one-instance" )
+ || ( config_GetInt( p_this, "one-instance-when-started-from-file" )
+ && config_GetInt( p_this, "started-from-file" ) ) )
+ {
+ HANDLE hmutex;
+
+ msg_Info( p_this, "one instance mode ENABLED");
+
+ /* Use a named mutex to check if another instance is already running */
+ if( !( hmutex = CreateMutex( 0, TRUE, L"VLC ipc "VERSION ) ) )
+ {
+ /* Failed for some reason. Just ignore the option and go on as
+ * normal. */
+ msg_Err( p_this, "one instance mode DISABLED "
+ "(mutex couldn't be created)" );
+ return;
+ }
+
+ if( GetLastError() != ERROR_ALREADY_EXISTS )
+ {
+ /* We are the 1st instance. */
+ static const char typename[] = "ipc helper";
+ vlc_object_t *p_helper =
+ vlc_custom_create( p_this, sizeof(vlc_object_t),
+ VLC_OBJECT_GENERIC, typename );
+
+ /* Run the helper thread */
+ if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
+ VLC_THREAD_PRIORITY_LOW, true ) )
+ {
+ msg_Err( p_this, "one instance mode DISABLED "
+ "(IPC helper thread couldn't be created)" );
+ vlc_object_release (p_helper);
+ }
+ else
+ libvlc_priv (p_this)->ipc_helper = p_helper;
+
+ /* Initialization done.
+ * Release the mutex to unblock other instances */
+ ReleaseMutex( hmutex );
+ }
+ else
+ {
+ /* Another instance is running */
+
+ HWND ipcwindow;