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 !defined( UNDER_CE )
  51     if( ppsz_argv[0] )
  52     {
  53         char psz_path[MAX_PATH];
  54         char *psz_vlc;
  55
  56         GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
  57
  58         if( psz_vlc > psz_path && psz_vlc[-1] == '\\' )
  59         {
  60             psz_vlc[-1] = '\0';
  61             p_this->p_libvlc->psz_vlcpath = strdup( psz_path );
  62         }
  63         else
  64         {
  65             p_this->p_libvlc->psz_vlcpath = strdup( "" );
  66         }
  67     }
  68     else
  69 #endif
  70     {
  71         p_this->p_libvlc->psz_vlcpath = strdup( "" );
  72     }
  73
  74     /* Set the default file-translation mode */
  75 #if !defined( UNDER_CE )
  76     _fmode = _O_BINARY;
  77 #endif
  78     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  79
  80     /* Call mdate() once to make sure it is initialized properly */
  81     mdate();
  82
  83     /* WinSock Library Init. */
  84     if( !WSAStartup( MAKEWORD( 2, 0 ), &Data ) )
  85     {
  86         /* Confirm that the WinSock DLL supports 2.0.*/
  87         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 0 )
  88         {
  89             /* We could not find a suitable WinSock DLL. */
  90             WSACleanup( );
  91         }
  92         else
  93         {
  94             /* Everything went ok. */
  95             return;
  96         }
  97     }
  98
  99     /* Let's try with WinSock 1.1 */
 100     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
 101     {
 102         /* Confirm that the WinSock DLL supports 1.1.*/
 103         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
 104         {
 105             /* We could not find a suitable WinSock DLL. */
 106             WSACleanup( );
 107         }
 108         else
 109         {
 110             /* Everything went ok. */
 111             return;
 112         }
 113     }
 114
 115     fprintf( stderr, "error: can't initialize WinSocks\n" );
 116
 117     return;
 118 }
 119
 120 /*****************************************************************************
 121  * system_Configure: check for system specific configuration options.
 122  *****************************************************************************/
 123 static void IPCHelperThread( vlc_object_t * );
 124 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 125
 126 void system_Configure( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
 127 {
 128 #if !defined( UNDER_CE )
 129     p_this->p_libvlc->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 130     p_this->p_libvlc->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 131
 132     /* Raise default priority of the current process */
 133 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 134 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 135 #endif
 136     if( config_GetInt( p_this, "high-priority" ) )
 137     {
 138         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 139              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 140         {
 141             msg_Dbg( p_this, "raised process priority" );
 142         }
 143         else
 144         {
 145             msg_Dbg( p_this, "could not raise process priority" );
 146         }
 147     }
 148
 149     if( config_GetInt( p_this, "one-instance" ) )
 150     {
 151         HANDLE hmutex;
 152
 153         msg_Info( p_this, "one instance mode ENABLED");
 154
 155         /* Use a named mutex to check if another instance is already running */
 156         if( ( hmutex = CreateMutex( NULL, TRUE, "VLC ipc "VERSION ) ) == NULL )
 157         {
 158             /* Failed for some reason. Just ignore the option and go on as
 159              * normal. */
 160             msg_Err( p_this, "one instance mode DISABLED "
 161                      "(mutex couldn't be created)" );
 162             return;
 163         }
 164
 165         if( GetLastError() != ERROR_ALREADY_EXISTS )
 166         {
 167             /* We are the 1st instance. */
 168             vlc_object_t *p_helper =
 169              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 170
 171             /* Run the helper thread */
 172             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 173                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 174             {
 175                 msg_Err( p_this, "one instance mode DISABLED "
 176                          "(IPC helper thread couldn't be created)" );
 177
 178             }
 179
 180             /* Initialization done.
 181              * Release the mutex to unblock other instances */
 182             ReleaseMutex( hmutex );
 183         }
 184         else
 185         {
 186             /* Another instance is running */
 187
 188             HWND ipcwindow;
 189
 190             /* Wait until the 1st instance is initialized */
 191             WaitForSingleObject( hmutex, INFINITE );
 192
 193             /* Locate the window created by the IPC helper thread of the
 194              * 1st instance */
 195             if( ( ipcwindow = FindWindow( NULL, "VLC ipc "VERSION ) )
 196                 == NULL )
 197             {
 198                 msg_Err( p_this, "one instance mode DISABLED "
 199                          "(couldn't find 1st instance of program)" );
 200                 ReleaseMutex( hmutex );
 201                 return;
 202             }
 203
 204             /* We assume that the remaining parameters are filenames
 205              * and their input options */
 206             if( *pi_argc - 1 >= optind )
 207             {
 208                 COPYDATASTRUCT wm_data;
 209                 int i_opt, i_data;
 210                 char *p_data;
 211
 212                 i_data = sizeof(int);
 213                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 214                 {
 215                     i_data += sizeof(int);
 216                     i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 217                 }
 218
 219                 p_data = (char *)malloc( i_data );
 220                 *((int *)&p_data[0]) = *pi_argc - optind;
 221                 i_data = sizeof(int);
 222                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 223                 {
 224                     int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 225                     *((int *)&p_data[i_data]) = i_len;
 226                     i_data += sizeof(int);
 227                     memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 228                     i_data += i_len;
 229                 }
 230
 231                 /* Send our playlist items to the 1st instance */
 232                 wm_data.dwData = 0;
 233                 wm_data.cbData = i_data;
 234                 wm_data.lpData = p_data;
 235                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 236             }
 237
 238             /* Initialization done.
 239              * Release the mutex to unblock other instances */
 240             ReleaseMutex( hmutex );
 241
 242             /* Bye bye */
 243             system_End( p_this );
 244             exit( 0 );
 245         }
 246     }
 247
 248 #endif
 249 }
 250
 251 static void IPCHelperThread( vlc_object_t *p_this )
 252 {
 253     HWND ipcwindow;
 254     MSG message;
 255
 256     ipcwindow =
 257         CreateWindow( "STATIC",                      /* name of window class */
 258                   "VLC ipc "VERSION,                /* window title bar text */
 259                   0,                                         /* window style */
 260                   0,                                 /* default X coordinate */
 261                   0,                                 /* default Y coordinate */
 262                   0,                                         /* window width */
 263                   0,                                        /* window height */
 264                   NULL,                                  /* no parent window */
 265                   NULL,                            /* no menu in this window */
 266                   GetModuleHandle(NULL),  /* handle of this program instance */
 267                   NULL );                               /* sent to WM_CREATE */
 268
 269     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 270     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 271
 272     /* Signal the creation of the thread and events queue */
 273     vlc_thread_ready( p_this );
 274
 275     while( GetMessage( &message, NULL, 0, 0 ) )
 276     {
 277         TranslateMessage( &message );
 278         DispatchMessage( &message );
 279     }
 280 }
 281
 282 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 283                                 LPARAM lParam )
 284 {
 285     if( uMsg == WM_COPYDATA )
 286     {
 287         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 288         vlc_object_t *p_this;
 289         playlist_t *p_playlist;
 290
 291         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 292
 293         if( !p_this ) return 0;
 294
 295         /* Add files to the playlist */
 296         p_playlist = (playlist_t *)vlc_object_find( p_this,
 297                                                     VLC_OBJECT_PLAYLIST,
 298                                                     FIND_ANYWHERE );
 299         if( !p_playlist ) return 0;
 300
 301         if( pwm_data->lpData )
 302         {
 303             int i_argc, i_data, i_opt, i_options;
 304             char **ppsz_argv;
 305             char *p_data = (char *)pwm_data->lpData;
 306
 307             i_argc = *((int *)&p_data[0]);
 308             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 309             i_data = sizeof(int);
 310             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 311             {
 312                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 313                 i_data += *((int *)&p_data[i_data]);
 314                 i_data += sizeof(int);
 315             }
 316
 317             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 318             {
 319                 i_options = 0;
 320
 321                 /* Count the input options */
 322                 while( i_opt + i_options + 1 < i_argc &&
 323                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 324                 {
 325                     i_options++;
 326                 }
 327
 328                 playlist_AddExt( p_playlist, ppsz_argv[i_opt],ppsz_argv[i_opt],
 329                     PLAYLIST_APPEND | (i_opt? 0 : PLAYLIST_GO),
 330                     PLAYLIST_END, -1,
 331                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 332                     i_options );
 333
 334                 i_opt += i_options;
 335             }
 336
 337             free( ppsz_argv );
 338         }
 339
 340         vlc_object_release( p_playlist );
 341     }
 342
 343     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 344 }
 345
 346 /*****************************************************************************
 347  * system_End: terminate winsock.
 348  *****************************************************************************/
 349 void system_End( vlc_t *p_this )
 350 {
 351     WSACleanup();
 352 }