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 VideoLAN
   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 <winsock2.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     if( ppsz_argv[0] )
  51     {
  52         char psz_path[MAX_PATH];
  53         char *psz_vlc;
  54
  55 #if defined( UNDER_CE )
  56         strcpy( psz_path, ppsz_argv[0] );
  57         psz_vlc = strrchr( psz_path, '\\' );
  58         if( psz_vlc ) psz_vlc++;
  59 #else
  60         GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
  61 #endif
  62
  63         if( psz_vlc > psz_path && psz_vlc[-1] == '\\' )
  64         {
  65             psz_vlc[-1] = '\0';
  66             p_this->p_libvlc->psz_vlcpath = strdup( psz_path );
  67         }
  68         else
  69         {
  70             p_this->p_libvlc->psz_vlcpath = strdup( "" );
  71         }
  72     }
  73     else
  74     {
  75         p_this->p_libvlc->psz_vlcpath = strdup( "" );
  76     }
  77
  78     /* Set the default file-translation mode */
  79 #if !defined( UNDER_CE )
  80     _fmode = _O_BINARY;
  81 #endif
  82     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  83
  84     /* Call mdate() once to make sure it is initialized properly */
  85     mdate();
  86
  87     /* WinSock Library Init. */
  88     if( !WSAStartup( MAKEWORD( 2, 0 ), &Data ) )
  89     {
  90         /* Confirm that the WinSock DLL supports 2.0.*/
  91         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 0 )
  92         {
  93             /* We could not find a suitable WinSock DLL. */
  94             WSACleanup( );
  95         }
  96         else
  97         {
  98             /* Everything went ok. */
  99             return;
 100         }
 101     }
 102
 103     /* Let's try with WinSock 1.1 */
 104     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
 105     {
 106         /* Confirm that the WinSock DLL supports 1.1.*/
 107         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
 108         {
 109             /* We could not find a suitable WinSock DLL. */
 110             WSACleanup( );
 111         }
 112         else
 113         {
 114             /* Everything went ok. */
 115             return;
 116         }
 117     }
 118
 119     fprintf( stderr, "error: can't initialize WinSocks\n" );
 120
 121     return;
 122 }
 123
 124 /*****************************************************************************
 125  * system_Configure: check for system specific configuration options.
 126  *****************************************************************************/
 127 static void IPCHelperThread( vlc_object_t * );
 128 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 129
 130 void system_Configure( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
 131 {
 132 #if !defined( UNDER_CE )
 133     p_this->p_libvlc->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 134     p_this->p_libvlc->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 135
 136     /* Raise default priority of the current process */
 137 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 138 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 139 #endif
 140     if( config_GetInt( p_this, "high-priority" ) )
 141     {
 142         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 143              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 144         {
 145             msg_Dbg( p_this, "raised process priority" );
 146         }
 147         else
 148         {
 149             msg_Dbg( p_this, "could not raise process priority" );
 150         }
 151     }
 152
 153     if( config_GetInt( p_this, "one-instance" ) )
 154     {
 155         HANDLE hmutex;
 156
 157         msg_Info( p_this, "one instance mode ENABLED");
 158
 159         /* Use a named mutex to check if another instance is already running */
 160         if( ( hmutex = CreateMutex( NULL, TRUE, "VLC ipc "VERSION ) ) == NULL )
 161         {
 162             /* Failed for some reason. Just ignore the option and go on as
 163              * normal. */
 164             msg_Err( p_this, "one instance mode DISABLED "
 165                      "(mutex couldn't be created)" );
 166             return;
 167         }
 168
 169         if( GetLastError() != ERROR_ALREADY_EXISTS )
 170         {
 171             /* We are the 1st instance. */
 172             vlc_object_t *p_helper =
 173              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 174
 175             /* Run the helper thread */
 176             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 177                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 178             {
 179                 msg_Err( p_this, "one instance mode DISABLED "
 180                          "(IPC helper thread couldn't be created)" );
 181
 182             }
 183
 184             /* Initialization done.
 185              * Release the mutex to unblock other instances */
 186             ReleaseMutex( hmutex );
 187         }
 188         else
 189         {
 190             /* Another instance is running */
 191
 192             HWND ipcwindow;
 193
 194             /* Wait until the 1st instance is initialized */
 195             WaitForSingleObject( hmutex, INFINITE );
 196
 197             /* Locate the window created by the IPC helper thread of the
 198              * 1st instance */
 199             if( ( ipcwindow = FindWindow( NULL, "VLC ipc "VERSION ) )
 200                 == NULL )
 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( "STATIC",                      /* name of window class */
 262                   "VLC ipc "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
 332                 playlist_AddExt( p_playlist, ppsz_argv[i_opt],ppsz_argv[i_opt],
 333                     PLAYLIST_APPEND | (i_opt? 0 : PLAYLIST_GO),
 334                     PLAYLIST_END, -1,
 335                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 336                     i_options );
 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( vlc_t *p_this )
 354 {
 355     WSACleanup();
 356 }