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
  25 #include <vlc/vlc.h>
  26 #include "../libvlc.h"
  27 #include <vlc_playlist.h>
  28 #include <vlc_charset.h>
  29
  30 #ifdef WIN32                       /* optind, getopt(), included in unistd.h */
  31 #   include "../extras/getopt.h"
  32 #endif
  33
  34 #if !defined( UNDER_CE )
  35 #   include <io.h>
  36 #   include <fcntl.h>
  37 #endif
  38
  39 #include <winsock.h>
  40
  41 /*****************************************************************************
  42  * system_Init: initialize winsock and misc other things.
  43  *****************************************************************************/
  44 void system_Init( libvlc_int_t *p_this, int *pi_argc, char *ppsz_argv[] )
  45 {
  46     WSADATA Data;
  47
  48     /* Get our full path */
  49     char psz_path[MAX_PATH];
  50     char *psz_vlc;
  51
  52 #if defined( UNDER_CE )
  53     wchar_t psz_wpath[MAX_PATH];
  54     if( GetModuleFileName( NULL, psz_wpath, MAX_PATH ) )
  55     {
  56         WideCharToMultiByte( CP_ACP, 0, psz_wpath, -1,
  57                              psz_path, MAX_PATH, NULL, NULL );
  58     }
  59     else psz_path[0] = '\0';
  60
  61 #else
  62     if( ppsz_argv[0] )
  63     {
  64         GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
  65     }
  66     else if( !GetModuleFileName( NULL, psz_path, MAX_PATH ) )
  67     {
  68         psz_path[0] = '\0';
  69     }
  70 #endif
  71
  72     if( (psz_vlc = strrchr( psz_path, '\\' )) ) *psz_vlc = '\0';
  73
  74 #ifndef HAVE_RELEASE
  75     {
  76         /* remove trailing \.libs from executable dir path if seen,
  77            we assume we are running vlc through libtool wrapper in build dir */
  78         int offset  = strlen(psz_path)-sizeof("\\.libs")+1;
  79         if( offset > 0 )
  80         {
  81             psz_vlc = psz_path+offset;
  82             if( ! strcmp(psz_vlc, "\\.libs") ) *psz_vlc = '\0';
  83         }
  84     }
  85 #endif
  86
  87     vlc_global()->psz_vlcpath = strdup( psz_path );
  88
  89     /* Set the default file-translation mode */
  90 #if !defined( UNDER_CE )
  91     _fmode = _O_BINARY;
  92     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  93 #endif
  94
  95     /* Call mdate() once to make sure it is initialized properly */
  96     mdate();
  97
  98     /* WinSock Library Init. */
  99     if( !WSAStartup( MAKEWORD( 2, 2 ), &Data ) )
 100     {
 101         /* Aah, pretty useless check, we should always have Winsock 2.2
 102          * since it appeared in Win98. */
 103         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 2 )
 104             /* We could not find a suitable WinSock DLL. */
 105             WSACleanup( );
 106         else
 107             /* Everything went ok. */
 108             return;
 109     }
 110
 111     /* Let's try with WinSock 1.1 */
 112     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
 113     {
 114         /* Confirm that the WinSock DLL supports 1.1.*/
 115         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
 116             /* We could not find a suitable WinSock DLL. */
 117             WSACleanup( );
 118         else
 119             /* Everything went ok. */
 120             return;
 121     }
 122
 123     fprintf( stderr, "error: can't initialize WinSocks\n" );
 124 }
 125
 126 /*****************************************************************************
 127  * system_Configure: check for system specific configuration options.
 128  *****************************************************************************/
 129 static void IPCHelperThread( vlc_object_t * );
 130 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 131
 132 void system_Configure( libvlc_int_t *p_this, int *pi_argc, char *ppsz_argv[] )
 133 {
 134 #if !defined( UNDER_CE )
 135     /* Raise default priority of the current process */
 136 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 137 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 138 #endif
 139     if( config_GetInt( p_this, "high-priority" ) )
 140     {
 141         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 142              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 143         {
 144             msg_Dbg( p_this, "raised process priority" );
 145         }
 146         else
 147         {
 148             msg_Dbg( p_this, "could not raise process priority" );
 149         }
 150     }
 151
 152     if( config_GetInt( p_this, "one-instance" )
 153         || ( config_GetInt( p_this, "one-instance-when-started-from-file" )
 154              && config_GetInt( p_this, "started-from-file" ) ) )
 155     {
 156         HANDLE hmutex;
 157
 158         msg_Info( p_this, "one instance mode ENABLED");
 159
 160         /* Use a named mutex to check if another instance is already running */
 161         if( !( hmutex = CreateMutex( 0, TRUE, _T("VLC ipc ") _T(VERSION) ) ) )
 162         {
 163             /* Failed for some reason. Just ignore the option and go on as
 164              * normal. */
 165             msg_Err( p_this, "one instance mode DISABLED "
 166                      "(mutex couldn't be created)" );
 167             return;
 168         }
 169
 170         if( GetLastError() != ERROR_ALREADY_EXISTS )
 171         {
 172             /* We are the 1st instance. */
 173             vlc_object_t *p_helper =
 174              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 175
 176             /* Run the helper thread */
 177             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 178                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 179             {
 180                 msg_Err( p_this, "one instance mode DISABLED "
 181                          "(IPC helper thread couldn't be created)" );
 182
 183             }
 184
 185             /* Initialization done.
 186              * Release the mutex to unblock other instances */
 187             ReleaseMutex( hmutex );
 188         }
 189         else
 190         {
 191             /* Another instance is running */
 192
 193             HWND ipcwindow;
 194
 195             /* Wait until the 1st instance is initialized */
 196             WaitForSingleObject( hmutex, INFINITE );
 197
 198             /* Locate the window created by the IPC helper thread of the
 199              * 1st instance */
 200             if( !( ipcwindow = FindWindow( 0, _T("VLC ipc ") _T(VERSION) ) ) )
 201             {
 202                 msg_Err( p_this, "one instance mode DISABLED "
 203                          "(couldn't find 1st instance of program)" );
 204                 ReleaseMutex( hmutex );
 205                 return;
 206             }
 207
 208             /* We assume that the remaining parameters are filenames
 209              * and their input options */
 210             if( *pi_argc - 1 >= optind )
 211             {
 212                 COPYDATASTRUCT wm_data;
 213                 int i_opt, i_data;
 214                 char *p_data;
 215
 216                 i_data = sizeof(int);
 217                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 218                 {
 219                     i_data += sizeof(int);
 220                     i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 221                 }
 222
 223                 p_data = (char *)malloc( i_data );
 224                 *((int *)&p_data[0]) = *pi_argc - optind;
 225                 i_data = sizeof(int);
 226                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 227                 {
 228                     int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 229                     *((int *)&p_data[i_data]) = i_len;
 230                     i_data += sizeof(int);
 231                     memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 232                     i_data += i_len;
 233                 }
 234
 235                 /* Send our playlist items to the 1st instance */
 236                 wm_data.dwData = 0;
 237                 wm_data.cbData = i_data;
 238                 wm_data.lpData = p_data;
 239                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 240             }
 241
 242             /* Initialization done.
 243              * Release the mutex to unblock other instances */
 244             ReleaseMutex( hmutex );
 245
 246             /* Bye bye */
 247             system_End( p_this );
 248             exit( 0 );
 249         }
 250     }
 251
 252 #endif
 253 }
 254
 255 static void IPCHelperThread( vlc_object_t *p_this )
 256 {
 257     HWND ipcwindow;
 258     MSG message;
 259
 260     ipcwindow =
 261         CreateWindow( _T("STATIC"),                  /* name of window class */
 262                   _T("VLC ipc ") _T(VERSION),       /* window title bar text */
 263                   0,                                         /* window style */
 264                   0,                                 /* default X coordinate */
 265                   0,                                 /* default Y coordinate */
 266                   0,                                         /* window width */
 267                   0,                                        /* window height */
 268                   NULL,                                  /* no parent window */
 269                   NULL,                            /* no menu in this window */
 270                   GetModuleHandle(NULL),  /* handle of this program instance */
 271                   NULL );                               /* sent to WM_CREATE */
 272
 273     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 274     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 275
 276     /* Signal the creation of the thread and events queue */
 277     vlc_thread_ready( p_this );
 278
 279     while( GetMessage( &message, NULL, 0, 0 ) )
 280     {
 281         TranslateMessage( &message );
 282         DispatchMessage( &message );
 283     }
 284 }
 285
 286 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 287                                 LPARAM lParam )
 288 {
 289     if( uMsg == WM_COPYDATA )
 290     {
 291         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 292         vlc_object_t *p_this;
 293         playlist_t *p_playlist;
 294
 295         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 296
 297         if( !p_this ) return 0;
 298
 299         /* Add files to the playlist */
 300         p_playlist = (playlist_t *)vlc_object_find( p_this,
 301                                                     VLC_OBJECT_PLAYLIST,
 302                                                     FIND_ANYWHERE );
 303         if( !p_playlist ) return 0;
 304
 305         if( pwm_data->lpData )
 306         {
 307             int i_argc, i_data, i_opt, i_options;
 308             char **ppsz_argv;
 309             char *p_data = (char *)pwm_data->lpData;
 310
 311             i_argc = *((int *)&p_data[0]);
 312             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 313             i_data = sizeof(int);
 314             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 315             {
 316                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 317                 i_data += *((int *)&p_data[i_data]);
 318                 i_data += sizeof(int);
 319             }
 320
 321             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 322             {
 323                 i_options = 0;
 324
 325                 /* Count the input options */
 326                 while( i_opt + i_options + 1 < i_argc &&
 327                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 328                 {
 329                     i_options++;
 330                 }
 331                 if( i_opt || config_GetInt( p_this, "playlist-enqueue" ) )
 332                 {
 333                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 334                     NULL, PLAYLIST_APPEND ,
 335                     PLAYLIST_END, -1,
 336                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 337                     i_options, VLC_TRUE, VLC_FALSE );
 338                 } else {
 339                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 340                     NULL, PLAYLIST_APPEND | PLAYLIST_GO,
 341                     PLAYLIST_END, -1,
 342                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 343                     i_options, VLC_TRUE, VLC_FALSE );
 344                 }
 345
 346                 i_opt += i_options;
 347             }
 348
 349             free( ppsz_argv );
 350         }
 351
 352         vlc_object_release( p_playlist );
 353     }
 354
 355     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 356 }
 357
 358 /*****************************************************************************
 359  * system_End: terminate winsock.
 360  *****************************************************************************/
 361 void system_End( libvlc_int_t *p_this )
 362 {
 363     if( p_this && vlc_global() )
 364     {
 365         free( vlc_global()->psz_vlcpath );
 366         vlc_global()->psz_vlcpath = NULL;
 367     }
 368
 369     WSACleanup();
 370 }