git.sesse.net Git - vlc/blob - src/misc/win32_specific.c

   1 /*****************************************************************************
   2  * win32_specific.c: Win32 specific features
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Gildas Bazin <gbazin@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24 #include <string.h>                                              /* strdup() */
  25 #include <stdlib.h>                                                /* free() */
  26
  27 #include <vlc/vlc.h>
  28 #include "../libvlc.h"
  29 #include <vlc_playlist.h>
  30 #include <vlc_charset.h>
  31
  32 #ifdef WIN32                       /* optind, getopt(), included in unistd.h */
  33 #   include "../extras/getopt.h"
  34 #endif
  35
  36 #if !defined( UNDER_CE )
  37 #   include <io.h>
  38 #   include <fcntl.h>
  39 #endif
  40
  41 #include <winsock.h>
  42
  43 /*****************************************************************************
  44  * system_Init: initialize winsock and misc other things.
  45  *****************************************************************************/
  46 void system_Init( libvlc_int_t *p_this, int *pi_argc, char *ppsz_argv[] )
  47 {
  48     WSADATA Data;
  49
  50     /* Get our full path */
  51     char psz_path[MAX_PATH];
  52     char *psz_vlc;
  53
  54 #if defined( UNDER_CE )
  55     wchar_t psz_wpath[MAX_PATH];
  56     if( GetModuleFileName( NULL, psz_wpath, MAX_PATH ) )
  57     {
  58         WideCharToMultiByte( CP_ACP, 0, psz_wpath, -1,
  59                              psz_path, MAX_PATH, NULL, NULL );
  60     }
  61     else psz_path[0] = '\0';
  62
  63 #else
  64     if( ppsz_argv[0] )
  65     {
  66         GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
  67     }
  68     else if( !GetModuleFileName( NULL, psz_path, MAX_PATH ) )
  69     {
  70         psz_path[0] = '\0';
  71     }
  72 #endif
  73
  74     if( (psz_vlc = strrchr( psz_path, '\\' )) ) *psz_vlc = '\0';
  75
  76     vlc_global( p_this )->psz_vlcpath = strdup( psz_path );
  77
  78     /* Set the default file-translation mode */
  79 #if !defined( UNDER_CE )
  80     _fmode = _O_BINARY;
  81     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  82 #endif
  83
  84     /* Call mdate() once to make sure it is initialized properly */
  85     mdate();
  86
  87     /* WinSock Library Init. */
  88     if( !WSAStartup( MAKEWORD( 2, 2 ), &Data ) )
  89     {
  90         /* Aah, pretty useless check, we should always have Winsock 2.2
  91          * since it appeared in Win98. */
  92         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 2 )
  93             /* We could not find a suitable WinSock DLL. */
  94             WSACleanup( );
  95         else
  96             /* Everything went ok. */
  97             return;
  98     }
  99
 100     /* Let's try with WinSock 1.1 */
 101     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
 102     {
 103         /* Confirm that the WinSock DLL supports 1.1.*/
 104         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
 105             /* We could not find a suitable WinSock DLL. */
 106             WSACleanup( );
 107         else
 108             /* Everything went ok. */
 109             return;
 110     }
 111
 112     fprintf( stderr, "error: can't initialize WinSocks\n" );
 113 }
 114
 115 /*****************************************************************************
 116  * system_Configure: check for system specific configuration options.
 117  *****************************************************************************/
 118 static void IPCHelperThread( vlc_object_t * );
 119 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 120
 121 void system_Configure( libvlc_int_t *p_this, int *pi_argc, char *ppsz_argv[] )
 122 {
 123 #if !defined( UNDER_CE )
 124     p_this->p_libvlc_global->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 125     p_this->p_libvlc_global->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 126
 127     /* Raise default priority of the current process */
 128 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 129 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 130 #endif
 131     if( config_GetInt( p_this, "high-priority" ) )
 132     {
 133         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 134              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 135         {
 136             msg_Dbg( p_this, "raised process priority" );
 137         }
 138         else
 139         {
 140             msg_Dbg( p_this, "could not raise process priority" );
 141         }
 142     }
 143
 144     if( config_GetInt( p_this, "one-instance" )
 145         || ( config_GetInt( p_this, "one-instance-when-started-from-file" )
 146              && config_GetInt( p_this, "started-from-file" ) ) )
 147     {
 148         HANDLE hmutex;
 149
 150         msg_Info( p_this, "one instance mode ENABLED");
 151
 152         /* Use a named mutex to check if another instance is already running */
 153         if( !( hmutex = CreateMutex( 0, TRUE, _T("VLC ipc ") _T(VERSION) ) ) )
 154         {
 155             /* Failed for some reason. Just ignore the option and go on as
 156              * normal. */
 157             msg_Err( p_this, "one instance mode DISABLED "
 158                      "(mutex couldn't be created)" );
 159             return;
 160         }
 161
 162         if( GetLastError() != ERROR_ALREADY_EXISTS )
 163         {
 164             /* We are the 1st instance. */
 165             vlc_object_t *p_helper =
 166              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 167
 168             /* Run the helper thread */
 169             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 170                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 171             {
 172                 msg_Err( p_this, "one instance mode DISABLED "
 173                          "(IPC helper thread couldn't be created)" );
 174
 175             }
 176
 177             /* Initialization done.
 178              * Release the mutex to unblock other instances */
 179             ReleaseMutex( hmutex );
 180         }
 181         else
 182         {
 183             /* Another instance is running */
 184
 185             HWND ipcwindow;
 186
 187             /* Wait until the 1st instance is initialized */
 188             WaitForSingleObject( hmutex, INFINITE );
 189
 190             /* Locate the window created by the IPC helper thread of the
 191              * 1st instance */
 192             if( !( ipcwindow = FindWindow( 0, _T("VLC ipc ") _T(VERSION) ) ) )
 193             {
 194                 msg_Err( p_this, "one instance mode DISABLED "
 195                          "(couldn't find 1st instance of program)" );
 196                 ReleaseMutex( hmutex );
 197                 return;
 198             }
 199
 200             /* We assume that the remaining parameters are filenames
 201              * and their input options */
 202             if( *pi_argc - 1 >= optind )
 203             {
 204                 COPYDATASTRUCT wm_data;
 205                 int i_opt, i_data;
 206                 char *p_data;
 207
 208                 i_data = sizeof(int);
 209                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 210                 {
 211                     i_data += sizeof(int);
 212                     i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 213                 }
 214
 215                 p_data = (char *)malloc( i_data );
 216                 *((int *)&p_data[0]) = *pi_argc - optind;
 217                 i_data = sizeof(int);
 218                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 219                 {
 220                     int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 221                     *((int *)&p_data[i_data]) = i_len;
 222                     i_data += sizeof(int);
 223                     memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 224                     i_data += i_len;
 225                 }
 226
 227                 /* Send our playlist items to the 1st instance */
 228                 wm_data.dwData = 0;
 229                 wm_data.cbData = i_data;
 230                 wm_data.lpData = p_data;
 231                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 232             }
 233
 234             /* Initialization done.
 235              * Release the mutex to unblock other instances */
 236             ReleaseMutex( hmutex );
 237
 238             /* Bye bye */
 239             system_End( p_this );
 240             exit( 0 );
 241         }
 242     }
 243
 244 #endif
 245 }
 246
 247 static void IPCHelperThread( vlc_object_t *p_this )
 248 {
 249     HWND ipcwindow;
 250     MSG message;
 251
 252     ipcwindow =
 253         CreateWindow( _T("STATIC"),                  /* name of window class */
 254                   _T("VLC ipc ") _T(VERSION),       /* window title bar text */
 255                   0,                                         /* window style */
 256                   0,                                 /* default X coordinate */
 257                   0,                                 /* default Y coordinate */
 258                   0,                                         /* window width */
 259                   0,                                        /* window height */
 260                   NULL,                                  /* no parent window */
 261                   NULL,                            /* no menu in this window */
 262                   GetModuleHandle(NULL),  /* handle of this program instance */
 263                   NULL );                               /* sent to WM_CREATE */
 264
 265     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 266     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 267
 268     /* Signal the creation of the thread and events queue */
 269     vlc_thread_ready( p_this );
 270
 271     while( GetMessage( &message, NULL, 0, 0 ) )
 272     {
 273         TranslateMessage( &message );
 274         DispatchMessage( &message );
 275     }
 276 }
 277
 278 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 279                                 LPARAM lParam )
 280 {
 281     if( uMsg == WM_COPYDATA )
 282     {
 283         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 284         vlc_object_t *p_this;
 285         playlist_t *p_playlist;
 286
 287         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 288
 289         if( !p_this ) return 0;
 290
 291         /* Add files to the playlist */
 292         p_playlist = (playlist_t *)vlc_object_find( p_this,
 293                                                     VLC_OBJECT_PLAYLIST,
 294                                                     FIND_ANYWHERE );
 295         if( !p_playlist ) return 0;
 296
 297         if( pwm_data->lpData )
 298         {
 299             int i_argc, i_data, i_opt, i_options;
 300             char **ppsz_argv;
 301             char *p_data = (char *)pwm_data->lpData;
 302
 303             i_argc = *((int *)&p_data[0]);
 304             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 305             i_data = sizeof(int);
 306             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 307             {
 308                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 309                 i_data += *((int *)&p_data[i_data]);
 310                 i_data += sizeof(int);
 311             }
 312
 313             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 314             {
 315                 i_options = 0;
 316
 317                 /* Count the input options */
 318                 while( i_opt + i_options + 1 < i_argc &&
 319                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 320                 {
 321                     i_options++;
 322                 }
 323                 if( i_opt || config_GetInt( p_this, "playlist-enqueue" ) )
 324                 {
 325                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 326                     NULL, PLAYLIST_APPEND ,
 327                     PLAYLIST_END, -1,
 328                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 329                     i_options, VLC_TRUE, VLC_FALSE );
 330                 } else {
 331                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 332                     NULL, PLAYLIST_APPEND | PLAYLIST_GO,
 333                     PLAYLIST_END, -1,
 334                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 335                     i_options, VLC_TRUE, VLC_FALSE );
 336                 }
 337
 338                 i_opt += i_options;
 339             }
 340
 341             free( ppsz_argv );
 342         }
 343
 344         vlc_object_release( p_playlist );
 345     }
 346
 347     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 348 }
 349
 350 /*****************************************************************************
 351  * system_End: terminate winsock.
 352  *****************************************************************************/
 353 void system_End( libvlc_int_t *p_this )
 354 {
 355     if( p_this && p_this->p_libvlc_global && vlc_global( p_this )->psz_vlcpath )
 356     {
 357         free( vlc_global( p_this )->psz_vlcpath );
 358         vlc_global( p_this )->psz_vlcpath = NULL;
 359     }
 360
 361     WSACleanup();
 362 }