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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  23  *****************************************************************************/
  24 #include <string.h>                                              /* strdup() */
  25 #include <stdlib.h>                                                /* free() */
  26
  27 #include <vlc/vlc.h>
  28 #include <vlc/input.h>
  29 #include "vlc_playlist.h"
  30
  31 #ifdef WIN32                       /* optind, getopt(), included in unistd.h */
  32 #   include "../extras/getopt.h"
  33 #endif
  34
  35 #if !defined( UNDER_CE )
  36 #   include <io.h>
  37 #   include <fcntl.h>
  38 #endif
  39
  40 #include <winsock.h>
  41
  42 /*****************************************************************************
  43  * system_Init: initialize winsock and misc other things.
  44  *****************************************************************************/
  45 void system_Init( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
  46 {
  47     WSADATA Data;
  48
  49     /* Get our full path */
  50     char psz_path[MAX_PATH];
  51     char *psz_vlc;
  52
  53 #if defined( UNDER_CE )
  54     wchar_t psz_wpath[MAX_PATH];
  55     if( GetModuleFileName( NULL, psz_wpath, MAX_PATH ) )
  56     {
  57         WideCharToMultiByte( CP_ACP, 0, psz_wpath, -1,
  58                              psz_path, MAX_PATH, NULL, NULL );
  59     }
  60     else psz_path[0] = '\0';
  61
  62 #else
  63     if( ppsz_argv[0] )
  64     {
  65         GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
  66     }
  67     else if( !GetModuleFileName( NULL, psz_path, MAX_PATH ) )
  68     {
  69         psz_path[0] = '\0';
  70     }
  71 #endif
  72
  73     if( (psz_vlc = strrchr( psz_path, '\\' )) ) *psz_vlc = '\0';
  74
  75     p_this->p_libvlc->psz_vlcpath = strdup( psz_path );
  76
  77     /* Set the default file-translation mode */
  78 #if !defined( UNDER_CE )
  79     _fmode = _O_BINARY;
  80     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  81 #endif
  82
  83     /* Call mdate() once to make sure it is initialized properly */
  84     mdate();
  85
  86     /* WinSock Library Init. */
  87     if( !WSAStartup( MAKEWORD( 2, 0 ), &Data ) )
  88     {
  89         /* Confirm that the WinSock DLL supports 2.0.*/
  90         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 0 )
  91         {
  92             /* We could not find a suitable WinSock DLL. */
  93             WSACleanup( );
  94         }
  95         else
  96         {
  97             /* Everything went ok. */
  98             return;
  99         }
 100     }
 101
 102     /* Let's try with WinSock 1.1 */
 103     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
 104     {
 105         /* Confirm that the WinSock DLL supports 1.1.*/
 106         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
 107         {
 108             /* We could not find a suitable WinSock DLL. */
 109             WSACleanup( );
 110         }
 111         else
 112         {
 113             /* Everything went ok. */
 114             return;
 115         }
 116     }
 117
 118     fprintf( stderr, "error: can't initialize WinSocks\n" );
 119
 120     return;
 121 }
 122
 123 /*****************************************************************************
 124  * system_Configure: check for system specific configuration options.
 125  *****************************************************************************/
 126 static void IPCHelperThread( vlc_object_t * );
 127 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 128
 129 void system_Configure( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
 130 {
 131 #if !defined( UNDER_CE )
 132     p_this->p_libvlc->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 133     p_this->p_libvlc->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 134
 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     {
 154         HANDLE hmutex;
 155
 156         msg_Info( p_this, "one instance mode ENABLED");
 157
 158         /* Use a named mutex to check if another instance is already running */
 159         if( !( hmutex = CreateMutex( 0, TRUE, _T("VLC ipc ") _T(VERSION) ) ) )
 160         {
 161             /* Failed for some reason. Just ignore the option and go on as
 162              * normal. */
 163             msg_Err( p_this, "one instance mode DISABLED "
 164                      "(mutex couldn't be created)" );
 165             return;
 166         }
 167
 168         if( GetLastError() != ERROR_ALREADY_EXISTS )
 169         {
 170             /* We are the 1st instance. */
 171             vlc_object_t *p_helper =
 172              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 173
 174             /* Run the helper thread */
 175             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 176                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 177             {
 178                 msg_Err( p_this, "one instance mode DISABLED "
 179                          "(IPC helper thread couldn't be created)" );
 180
 181             }
 182
 183             /* Initialization done.
 184              * Release the mutex to unblock other instances */
 185             ReleaseMutex( hmutex );
 186         }
 187         else
 188         {
 189             /* Another instance is running */
 190
 191             HWND ipcwindow;
 192
 193             /* Wait until the 1st instance is initialized */
 194             WaitForSingleObject( hmutex, INFINITE );
 195
 196             /* Locate the window created by the IPC helper thread of the
 197              * 1st instance */
 198             if( !( ipcwindow = FindWindow( 0, _T("VLC ipc ") _T(VERSION) ) ) )
 199             {
 200                 msg_Err( p_this, "one instance mode DISABLED "
 201                          "(couldn't find 1st instance of program)" );
 202                 ReleaseMutex( hmutex );
 203                 return;
 204             }
 205
 206             /* We assume that the remaining parameters are filenames
 207              * and their input options */
 208             if( *pi_argc - 1 >= optind )
 209             {
 210                 COPYDATASTRUCT wm_data;
 211                 int i_opt, i_data;
 212                 char *p_data;
 213
 214                 i_data = sizeof(int);
 215                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 216                 {
 217                     i_data += sizeof(int);
 218                     i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 219                 }
 220
 221                 p_data = (char *)malloc( i_data );
 222                 *((int *)&p_data[0]) = *pi_argc - optind;
 223                 i_data = sizeof(int);
 224                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 225                 {
 226                     int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 227                     *((int *)&p_data[i_data]) = i_len;
 228                     i_data += sizeof(int);
 229                     memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 230                     i_data += i_len;
 231                 }
 232
 233                 /* Send our playlist items to the 1st instance */
 234                 wm_data.dwData = 0;
 235                 wm_data.cbData = i_data;
 236                 wm_data.lpData = p_data;
 237                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 238             }
 239
 240             /* Initialization done.
 241              * Release the mutex to unblock other instances */
 242             ReleaseMutex( hmutex );
 243
 244             /* Bye bye */
 245             system_End( p_this );
 246             exit( 0 );
 247         }
 248     }
 249
 250 #endif
 251 }
 252
 253 static void IPCHelperThread( vlc_object_t *p_this )
 254 {
 255     HWND ipcwindow;
 256     MSG message;
 257
 258     ipcwindow =
 259         CreateWindow( _T("STATIC"),                  /* name of window class */
 260                   _T("VLC ipc ") _T(VERSION),       /* window title bar text */
 261                   0,                                         /* window style */
 262                   0,                                 /* default X coordinate */
 263                   0,                                 /* default Y coordinate */
 264                   0,                                         /* window width */
 265                   0,                                        /* window height */
 266                   NULL,                                  /* no parent window */
 267                   NULL,                            /* no menu in this window */
 268                   GetModuleHandle(NULL),  /* handle of this program instance */
 269                   NULL );                               /* sent to WM_CREATE */
 270
 271     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 272     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 273
 274     /* Signal the creation of the thread and events queue */
 275     vlc_thread_ready( p_this );
 276
 277     while( GetMessage( &message, NULL, 0, 0 ) )
 278     {
 279         TranslateMessage( &message );
 280         DispatchMessage( &message );
 281     }
 282 }
 283
 284 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 285                                 LPARAM lParam )
 286 {
 287     if( uMsg == WM_COPYDATA )
 288     {
 289         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 290         vlc_object_t *p_this;
 291         playlist_t *p_playlist;
 292
 293         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 294
 295         if( !p_this ) return 0;
 296
 297         /* Add files to the playlist */
 298         p_playlist = (playlist_t *)vlc_object_find( p_this,
 299                                                     VLC_OBJECT_PLAYLIST,
 300                                                     FIND_ANYWHERE );
 301         if( !p_playlist ) return 0;
 302
 303         if( pwm_data->lpData )
 304         {
 305             int i_argc, i_data, i_opt, i_options;
 306             char **ppsz_argv;
 307             char *p_data = (char *)pwm_data->lpData;
 308
 309             i_argc = *((int *)&p_data[0]);
 310             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 311             i_data = sizeof(int);
 312             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 313             {
 314                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 315                 i_data += *((int *)&p_data[i_data]);
 316                 i_data += sizeof(int);
 317             }
 318
 319             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 320             {
 321                 i_options = 0;
 322
 323                 /* Count the input options */
 324                 while( i_opt + i_options + 1 < i_argc &&
 325                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 326                 {
 327                     i_options++;
 328                 }
 329                 if( i_opt || config_GetInt( p_this, "playlist-enqueue" ) )
 330                 {
 331                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 332                     ppsz_argv[i_opt], PLAYLIST_APPEND ,
 333                     PLAYLIST_END, -1,
 334                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 335                     i_options );
 336                 } else {
 337                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 338                     ppsz_argv[i_opt], PLAYLIST_APPEND | PLAYLIST_GO,
 339                     PLAYLIST_END, -1,
 340                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 341                     i_options );
 342                 }
 343
 344                 i_opt += i_options;
 345             }
 346
 347             free( ppsz_argv );
 348         }
 349
 350         vlc_object_release( p_playlist );
 351     }
 352
 353     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 354 }
 355
 356 /*****************************************************************************
 357  * system_End: terminate winsock.
 358  *****************************************************************************/
 359 void system_End( vlc_t *p_this )
 360 {
 361     if( p_this && p_this->p_libvlc && p_this->p_libvlc->psz_vlcpath )
 362     {
 363         free( p_this->p_libvlc->psz_vlcpath );
 364         p_this->p_libvlc->psz_vlcpath = NULL;
 365     }
 366
 367     WSACleanup();
 368 }