1 /*****************************************************************************
2 * specific.c: Win32 specific initilization
3 *****************************************************************************
4 * Copyright (C) 2001-2004, 2010 VLC authors and VideoLAN
6 * Authors: Samuel Hocevar <sam@zoy.org>
7 * Gildas Bazin <gbazin@videolan.org>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
29 #include <vlc_common.h>
31 #include "../lib/libvlc_internal.h"
32 #include "config/vlc_getopt.h"
38 static int system_InitWSA(int hi, int lo)
42 if (WSAStartup(MAKEWORD(hi, lo), &data) == 0)
44 if (LOBYTE(data.wVersion) == 2 && HIBYTE(data.wVersion) == 2)
46 /* Winsock DLL is not usable */
53 * Initializes MME timer, Winsock.
55 void system_Init(void)
61 if (system_InitWSA(2, 2) && system_InitWSA(1, 1))
62 fputs("Error: cannot initialize Winsocks\n", stderr);
65 /*****************************************************************************
66 * system_Configure: check for system specific configuration options.
67 *****************************************************************************/
69 /* Must be same as in modules/control/win_msg.c */
77 void system_Configure( libvlc_int_t *p_this, int i_argc, const char *const ppsz_argv[] )
80 /* Raise default priority of the current process */
81 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
82 # define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
84 if( var_InheritBool( p_this, "high-priority" ) )
86 if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
87 || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
89 msg_Dbg( p_this, "raised process priority" );
93 msg_Dbg( p_this, "could not raise process priority" );
97 if( var_InheritBool( p_this, "one-instance" )
98 || ( var_InheritBool( p_this, "one-instance-when-started-from-file" )
99 && var_InheritBool( p_this, "started-from-file" ) ) )
103 msg_Info( p_this, "one instance mode ENABLED");
105 /* Use a named mutex to check if another instance is already running */
106 if( !( hmutex = CreateMutex( 0, TRUE, L"VLC ipc " TEXT(VERSION) ) ) )
108 /* Failed for some reason. Just ignore the option and go on as
110 msg_Err( p_this, "one instance mode DISABLED "
111 "(mutex couldn't be created)" );
115 if( GetLastError() != ERROR_ALREADY_EXISTS )
117 libvlc_InternalAddIntf( p_this, "win32msg,none" );
118 /* Initialization done.
119 * Release the mutex to unblock other instances */
120 ReleaseMutex( hmutex );
124 /* Another instance is running */
128 /* Wait until the 1st instance is initialized */
129 WaitForSingleObject( hmutex, INFINITE );
131 /* Locate the window created by the IPC helper thread of the
133 if( !( ipcwindow = FindWindow( 0, L"VLC ipc " TEXT(VERSION) ) ) )
135 msg_Err( p_this, "one instance mode DISABLED "
136 "(couldn't find 1st instance of program)" );
137 ReleaseMutex( hmutex );
141 /* We assume that the remaining parameters are filenames
142 * and their input options */
145 COPYDATASTRUCT wm_data;
147 vlc_ipc_data_t *p_data;
148 size_t i_data = sizeof (*p_data);
150 for( i_opt = 0; i_opt < i_argc; i_opt++ )
152 i_data += sizeof (size_t);
153 i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
156 p_data = malloc( i_data );
157 p_data->argc = i_argc;
158 p_data->enqueue = var_InheritBool( p_this, "playlist-enqueue" );
160 for( i_opt = 0; i_opt < i_argc; i_opt++ )
162 size_t i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
163 /* Windows will never switch to an architecture
164 * with stronger alignment requirements, right. */
165 *((size_t *)(p_data->data + i_data)) = i_len;
166 i_data += sizeof (size_t);
167 memcpy( &p_data->data[i_data], ppsz_argv[ i_opt ], i_len );
170 i_data += sizeof (*p_data);
172 /* Send our playlist items to the 1st instance */
174 wm_data.cbData = i_data;
175 wm_data.lpData = p_data;
176 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
179 /* Initialization done.
180 * Release the mutex to unblock other instances */
181 ReleaseMutex( hmutex );
192 * Cleans up after system_Init() and system_Configure().
194 void system_End(void)
196 #if !VLC_WINSTORE_APP
200 /* XXX: In theory, we should not call this if WSAStartup() failed. */