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 #ifndef HAVE_RELEASE
  77     {
  78         /* remove trailing \.libs from executable dir path if seen,
  79            we assume we are running vlc through libtool wrapper in build dir */
  80         int offset  = strlen(psz_path)-sizeof("\\.libs")+1;
  81         if( offset > 0 )
  82         {
  83             psz_vlc = psz_path+offset;
  84             if( ! strcmp(psz_vlc, "\\.libs") ) *psz_vlc = '\0';
  85         }
  86     }
  87 #endif
  88
  89     vlc_global( p_this )->psz_vlcpath = strdup( psz_path );
  90
  91     /* Set the default file-translation mode */
  92 #if !defined( UNDER_CE )
  93     _fmode = _O_BINARY;
  94     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  95 #endif
  96
  97     /* Call mdate() once to make sure it is initialized properly */
  98     mdate();
  99
 100     /* WinSock Library Init. */
 101     if( !WSAStartup( MAKEWORD( 2, 2 ), &Data ) )
 102     {
 103         /* Aah, pretty useless check, we should always have Winsock 2.2
 104          * since it appeared in Win98. */
 105         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 2 )
 106             /* We could not find a suitable WinSock DLL. */
 107             WSACleanup( );
 108         else
 109             /* Everything went ok. */
 110             return;
 111     }
 112
 113     /* Let's try with WinSock 1.1 */
 114     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
 115     {
 116         /* Confirm that the WinSock DLL supports 1.1.*/
 117         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
 118             /* We could not find a suitable WinSock DLL. */
 119             WSACleanup( );
 120         else
 121             /* Everything went ok. */
 122             return;
 123     }
 124
 125     fprintf( stderr, "error: can't initialize WinSocks\n" );
 126 }
 127
 128 /*****************************************************************************
 129  * system_Configure: check for system specific configuration options.
 130  *****************************************************************************/
 131 static void IPCHelperThread( vlc_object_t * );
 132 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 133
 134 void system_Configure( libvlc_int_t *p_this, int *pi_argc, char *ppsz_argv[] )
 135 {
 136 #if !defined( UNDER_CE )
 137     /* Raise default priority of the current process */
 138 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 139 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 140 #endif
 141     if( config_GetInt( p_this, "high-priority" ) )
 142     {
 143         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 144              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 145         {
 146             msg_Dbg( p_this, "raised process priority" );
 147         }
 148         else
 149         {
 150             msg_Dbg( p_this, "could not raise process priority" );
 151         }
 152     }
 153
 154     if( config_GetInt( p_this, "one-instance" )
 155         || ( config_GetInt( p_this, "one-instance-when-started-from-file" )
 156              && config_GetInt( p_this, "started-from-file" ) ) )
 157     {
 158         HANDLE hmutex;
 159
 160         msg_Info( p_this, "one instance mode ENABLED");
 161
 162         /* Use a named mutex to check if another instance is already running */
 163         if( !( hmutex = CreateMutex( 0, TRUE, _T("VLC ipc ") _T(VERSION) ) ) )
 164         {
 165             /* Failed for some reason. Just ignore the option and go on as
 166              * normal. */
 167             msg_Err( p_this, "one instance mode DISABLED "
 168                      "(mutex couldn't be created)" );
 169             return;
 170         }
 171
 172         if( GetLastError() != ERROR_ALREADY_EXISTS )
 173         {
 174             /* We are the 1st instance. */
 175             vlc_object_t *p_helper =
 176              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 177
 178             /* Run the helper thread */
 179             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 180                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 181             {
 182                 msg_Err( p_this, "one instance mode DISABLED "
 183                          "(IPC helper thread couldn't be created)" );
 184
 185             }
 186
 187             /* Initialization done.
 188              * Release the mutex to unblock other instances */
 189             ReleaseMutex( hmutex );
 190         }
 191         else
 192         {
 193             /* Another instance is running */
 194
 195             HWND ipcwindow;
 196
 197             /* Wait until the 1st instance is initialized */
 198             WaitForSingleObject( hmutex, INFINITE );
 199
 200             /* Locate the window created by the IPC helper thread of the
 201              * 1st instance */
 202             if( !( ipcwindow = FindWindow( 0, _T("VLC ipc ") _T(VERSION) ) ) )
 203             {
 204                 msg_Err( p_this, "one instance mode DISABLED "
 205                          "(couldn't find 1st instance of program)" );
 206                 ReleaseMutex( hmutex );
 207                 return;
 208             }
 209
 210             /* We assume that the remaining parameters are filenames
 211              * and their input options */
 212             if( *pi_argc - 1 >= optind )
 213             {
 214                 COPYDATASTRUCT wm_data;
 215                 int i_opt, i_data;
 216                 char *p_data;
 217
 218                 i_data = sizeof(int);
 219                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 220                 {
 221                     i_data += sizeof(int);
 222                     i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 223                 }
 224
 225                 p_data = (char *)malloc( i_data );
 226                 *((int *)&p_data[0]) = *pi_argc - optind;
 227                 i_data = sizeof(int);
 228                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 229                 {
 230                     int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 231                     *((int *)&p_data[i_data]) = i_len;
 232                     i_data += sizeof(int);
 233                     memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 234                     i_data += i_len;
 235                 }
 236
 237                 /* Send our playlist items to the 1st instance */
 238                 wm_data.dwData = 0;
 239                 wm_data.cbData = i_data;
 240                 wm_data.lpData = p_data;
 241                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 242             }
 243
 244             /* Initialization done.
 245              * Release the mutex to unblock other instances */
 246             ReleaseMutex( hmutex );
 247
 248             /* Bye bye */
 249             system_End( p_this );
 250             exit( 0 );
 251         }
 252     }
 253
 254 #endif
 255 }
 256
 257 static void IPCHelperThread( vlc_object_t *p_this )
 258 {
 259     HWND ipcwindow;
 260     MSG message;
 261
 262     ipcwindow =
 263         CreateWindow( _T("STATIC"),                  /* name of window class */
 264                   _T("VLC ipc ") _T(VERSION),       /* window title bar text */
 265                   0,                                         /* window style */
 266                   0,                                 /* default X coordinate */
 267                   0,                                 /* default Y coordinate */
 268                   0,                                         /* window width */
 269                   0,                                        /* window height */
 270                   NULL,                                  /* no parent window */
 271                   NULL,                            /* no menu in this window */
 272                   GetModuleHandle(NULL),  /* handle of this program instance */
 273                   NULL );                               /* sent to WM_CREATE */
 274
 275     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 276     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 277
 278     /* Signal the creation of the thread and events queue */
 279     vlc_thread_ready( p_this );
 280
 281     while( GetMessage( &message, NULL, 0, 0 ) )
 282     {
 283         TranslateMessage( &message );
 284         DispatchMessage( &message );
 285     }
 286 }
 287
 288 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 289                                 LPARAM lParam )
 290 {
 291     if( uMsg == WM_COPYDATA )
 292     {
 293         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 294         vlc_object_t *p_this;
 295         playlist_t *p_playlist;
 296
 297         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 298
 299         if( !p_this ) return 0;
 300
 301         /* Add files to the playlist */
 302         p_playlist = (playlist_t *)vlc_object_find( p_this,
 303                                                     VLC_OBJECT_PLAYLIST,
 304                                                     FIND_ANYWHERE );
 305         if( !p_playlist ) return 0;
 306
 307         if( pwm_data->lpData )
 308         {
 309             int i_argc, i_data, i_opt, i_options;
 310             char **ppsz_argv;
 311             char *p_data = (char *)pwm_data->lpData;
 312
 313             i_argc = *((int *)&p_data[0]);
 314             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 315             i_data = sizeof(int);
 316             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 317             {
 318                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 319                 i_data += *((int *)&p_data[i_data]);
 320                 i_data += sizeof(int);
 321             }
 322
 323             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 324             {
 325                 i_options = 0;
 326
 327                 /* Count the input options */
 328                 while( i_opt + i_options + 1 < i_argc &&
 329                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 330                 {
 331                     i_options++;
 332                 }
 333                 if( i_opt || config_GetInt( p_this, "playlist-enqueue" ) )
 334                 {
 335                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 336                     NULL, PLAYLIST_APPEND ,
 337                     PLAYLIST_END, -1,
 338                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 339                     i_options, VLC_TRUE, VLC_FALSE );
 340                 } else {
 341                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 342                     NULL, PLAYLIST_APPEND | PLAYLIST_GO,
 343                     PLAYLIST_END, -1,
 344                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 345                     i_options, VLC_TRUE, VLC_FALSE );
 346                 }
 347
 348                 i_opt += i_options;
 349             }
 350
 351             free( ppsz_argv );
 352         }
 353
 354         vlc_object_release( p_playlist );
 355     }
 356
 357     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 358 }
 359
 360 /*****************************************************************************
 361  * system_End: terminate winsock.
 362  *****************************************************************************/
 363 void system_End( libvlc_int_t *p_this )
 364 {
 365     if( p_this && p_this->p_libvlc_global && vlc_global( p_this )->psz_vlcpath )
 366     {
 367         free( vlc_global( p_this )->psz_vlcpath );
 368         vlc_global( p_this )->psz_vlcpath = NULL;
 369     }
 370
 371     WSACleanup();
 372 }