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 <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 extern void __wgetmainargs(int *argc, wchar_t ***wargv, wchar_t ***wenviron,
  43                            int expand_wildcards, int *startupinfo);
  44
  45 /*****************************************************************************
  46  * system_Init: initialize winsock and misc other things.
  47  *****************************************************************************/
  48 void system_Init( libvlc_int_t *p_this, int *pi_argc, char *ppsz_argv[] )
  49 {
  50     WSADATA Data;
  51
  52     /* Get our full path */
  53     char psz_path[MAX_PATH];
  54     char *psz_vlc;
  55
  56 #if defined( UNDER_CE )
  57     wchar_t psz_wpath[MAX_PATH];
  58     if( GetModuleFileName( NULL, psz_wpath, MAX_PATH ) )
  59     {
  60         WideCharToMultiByte( CP_ACP, 0, psz_wpath, -1,
  61                              psz_path, MAX_PATH, NULL, NULL );
  62     }
  63     else psz_path[0] = '\0';
  64
  65 #else
  66     if( ppsz_argv[0] )
  67     {
  68         GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
  69     }
  70     else if( !GetModuleFileName( NULL, psz_path, MAX_PATH ) )
  71     {
  72         psz_path[0] = '\0';
  73     }
  74 #endif
  75
  76     if( (psz_vlc = strrchr( psz_path, '\\' )) ) *psz_vlc = '\0';
  77
  78     p_this->p_libvlc_global->psz_vlcpath = strdup( psz_path );
  79
  80     /* Set the default file-translation mode */
  81 #if !defined( UNDER_CE )
  82     _fmode = _O_BINARY;
  83     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  84 #endif
  85
  86     /* Call mdate() once to make sure it is initialized properly */
  87     mdate();
  88
  89     /* WinSock Library Init. */
  90     if( !WSAStartup( MAKEWORD( 2, 2 ), &Data ) )
  91     {
  92         /* Aah, pretty useless check, we should always have Winsock 2.2
  93          * since it appeared in Win98. */
  94         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 2 )
  95             /* We could not find a suitable WinSock DLL. */
  96             WSACleanup( );
  97         else
  98             /* Everything went ok. */
  99             return;
 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             /* We could not find a suitable WinSock DLL. */
 108             WSACleanup( );
 109         else
 110             /* Everything went ok. */
 111             return;
 112     }
 113
 114     fprintf( stderr, "error: can't initialize WinSocks\n" );
 115 }
 116
 117 /*****************************************************************************
 118  * system_Configure: check for system specific configuration options.
 119  *****************************************************************************/
 120 static void IPCHelperThread( vlc_object_t * );
 121 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 122
 123 void system_Configure( libvlc_int_t *p_this, int *pi_argc, char *ppsz_argv[] )
 124 {
 125 #if !defined( UNDER_CE )
 126     p_this->p_libvlc_global->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 127     p_this->p_libvlc_global->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 128
 129     /* Raise default priority of the current process */
 130 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 131 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 132 #endif
 133     if( config_GetInt( p_this, "high-priority" ) )
 134     {
 135         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 136              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 137         {
 138             msg_Dbg( p_this, "raised process priority" );
 139         }
 140         else
 141         {
 142             msg_Dbg( p_this, "could not raise process priority" );
 143         }
 144     }
 145
 146     if( config_GetInt( p_this, "one-instance" )
 147         || ( config_GetInt( p_this, "one-instance-when-started-from-file" )
 148              && config_GetInt( p_this, "started-from-file" ) ) )
 149     {
 150         HANDLE hmutex;
 151
 152         msg_Info( p_this, "one instance mode ENABLED");
 153
 154         /* Use a named mutex to check if another instance is already running */
 155         if( !( hmutex = CreateMutex( 0, TRUE, _T("VLC ipc ") _T(VERSION) ) ) )
 156         {
 157             /* Failed for some reason. Just ignore the option and go on as
 158              * normal. */
 159             msg_Err( p_this, "one instance mode DISABLED "
 160                      "(mutex couldn't be created)" );
 161             return;
 162         }
 163
 164         if( GetLastError() != ERROR_ALREADY_EXISTS )
 165         {
 166             /* We are the 1st instance. */
 167             vlc_object_t *p_helper =
 168              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 169
 170             /* Run the helper thread */
 171             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 172                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 173             {
 174                 msg_Err( p_this, "one instance mode DISABLED "
 175                          "(IPC helper thread couldn't be created)" );
 176
 177             }
 178
 179             /* Initialization done.
 180              * Release the mutex to unblock other instances */
 181             ReleaseMutex( hmutex );
 182         }
 183         else
 184         {
 185             /* Another instance is running */
 186
 187             HWND ipcwindow;
 188
 189             /* Wait until the 1st instance is initialized */
 190             WaitForSingleObject( hmutex, INFINITE );
 191
 192             /* Locate the window created by the IPC helper thread of the
 193              * 1st instance */
 194             if( !( ipcwindow = FindWindow( 0, _T("VLC ipc ") _T(VERSION) ) ) )
 195             {
 196                 msg_Err( p_this, "one instance mode DISABLED "
 197                          "(couldn't find 1st instance of program)" );
 198                 ReleaseMutex( hmutex );
 199                 return;
 200             }
 201
 202             /* We assume that the remaining parameters are filenames
 203              * and their input options */
 204             if( *pi_argc - 1 >= optind )
 205             {
 206                 COPYDATASTRUCT wm_data;
 207                 int i_opt, i_data;
 208                 char *p_data;
 209                 wchar_t **wargv, **wenvp;
 210                 int si = { 0 };
 211
 212                 i_data = sizeof(int);
 213                 if( GetVersion() < 0x80000000 )
 214                 {
 215                     /* use unicode argv[] for Windows NT and above */
 216                     __wgetmainargs(&i_opt, &wargv, &wenvp, 0, &si);
 217                     for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 218                     {
 219                         i_data += sizeof(int);
 220                         i_data += WideCharToMultiByte( CP_UTF8, 0,
 221                              wargv[ i_opt ], -1, NULL, 0, NULL, NULL ) + 1;
 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 = WideCharToMultiByte( CP_UTF8, 0,
 229                              wargv[ i_opt ], -1, NULL, 0, NULL, NULL ) + 1;
 230                         *((int *)&p_data[i_data]) = i_len;
 231                         i_data += sizeof(int);
 232                         WideCharToMultiByte( CP_UTF8, 0, wargv[ i_opt ], -1,
 233                              &p_data[i_data], i_len, NULL, NULL );
 234                         i_data += i_len;
 235                     }
 236
 237                 }
 238                 else
 239                 {
 240                     for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 241                     {
 242                         i_data += sizeof(int);
 243                         i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 244                     }
 245
 246                     p_data = (char *)malloc( i_data );
 247                     *((int *)&p_data[0]) = *pi_argc - optind;
 248                     i_data = sizeof(int);
 249                     for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 250                     {
 251                         int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 252                         *((int *)&p_data[i_data]) = i_len;
 253                         i_data += sizeof(int);
 254                         memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 255                         i_data += i_len;
 256                     }
 257                 }
 258
 259                 /* Send our playlist items to the 1st instance */
 260                 wm_data.dwData = 0;
 261                 wm_data.cbData = i_data;
 262                 wm_data.lpData = p_data;
 263                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 264             }
 265
 266             /* Initialization done.
 267              * Release the mutex to unblock other instances */
 268             ReleaseMutex( hmutex );
 269
 270             /* Bye bye */
 271             system_End( p_this );
 272             exit( 0 );
 273         }
 274     }
 275
 276 #endif
 277 }
 278
 279 static void IPCHelperThread( vlc_object_t *p_this )
 280 {
 281     HWND ipcwindow;
 282     MSG message;
 283
 284     ipcwindow =
 285         CreateWindow( _T("STATIC"),                  /* name of window class */
 286                   _T("VLC ipc ") _T(VERSION),       /* window title bar text */
 287                   0,                                         /* window style */
 288                   0,                                 /* default X coordinate */
 289                   0,                                 /* default Y coordinate */
 290                   0,                                         /* window width */
 291                   0,                                        /* window height */
 292                   NULL,                                  /* no parent window */
 293                   NULL,                            /* no menu in this window */
 294                   GetModuleHandle(NULL),  /* handle of this program instance */
 295                   NULL );                               /* sent to WM_CREATE */
 296
 297     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 298     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 299
 300     /* Signal the creation of the thread and events queue */
 301     vlc_thread_ready( p_this );
 302
 303     while( GetMessage( &message, NULL, 0, 0 ) )
 304     {
 305         TranslateMessage( &message );
 306         DispatchMessage( &message );
 307     }
 308 }
 309
 310 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 311                                 LPARAM lParam )
 312 {
 313     if( uMsg == WM_COPYDATA )
 314     {
 315         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 316         vlc_object_t *p_this;
 317         playlist_t *p_playlist;
 318
 319         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 320
 321         if( !p_this ) return 0;
 322
 323         /* Add files to the playlist */
 324         p_playlist = (playlist_t *)vlc_object_find( p_this,
 325                                                     VLC_OBJECT_PLAYLIST,
 326                                                     FIND_ANYWHERE );
 327         if( !p_playlist ) return 0;
 328
 329         if( pwm_data->lpData )
 330         {
 331             int i_argc, i_data, i_opt, i_options;
 332             char **ppsz_argv;
 333             char *p_data = (char *)pwm_data->lpData;
 334
 335             i_argc = *((int *)&p_data[0]);
 336             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 337             i_data = sizeof(int);
 338             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 339             {
 340                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 341                 i_data += *((int *)&p_data[i_data]);
 342                 i_data += sizeof(int);
 343             }
 344
 345             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 346             {
 347                 i_options = 0;
 348
 349                 /* Count the input options */
 350                 while( i_opt + i_options + 1 < i_argc &&
 351                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 352                 {
 353                     i_options++;
 354                 }
 355                 if( i_opt || config_GetInt( p_this, "playlist-enqueue" ) )
 356                 {
 357                   playlist_PlaylistAddExt( p_playlist, ppsz_argv[i_opt],
 358                     NULL, PLAYLIST_APPEND ,
 359                     PLAYLIST_END, -1,
 360                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 361                     i_options );
 362                 } else {
 363                   playlist_PlaylistAddExt( p_playlist, ppsz_argv[i_opt],
 364                     NULL, PLAYLIST_APPEND | PLAYLIST_GO,
 365                     PLAYLIST_END, -1,
 366                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 367                     i_options );
 368                 }
 369
 370                 i_opt += i_options;
 371             }
 372
 373             free( ppsz_argv );
 374         }
 375
 376         vlc_object_release( p_playlist );
 377     }
 378
 379     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 380 }
 381
 382 /*****************************************************************************
 383  * system_End: terminate winsock.
 384  *****************************************************************************/
 385 void system_End( libvlc_int_t *p_this )
 386 {
 387     if( p_this && p_this->p_libvlc_global && p_this->p_libvlc_global->psz_vlcpath )
 388     {
 389         free( p_this->p_libvlc_global->psz_vlcpath );
 390         p_this->p_libvlc_global->psz_vlcpath = NULL;
 391     }
 392
 393     WSACleanup();
 394 }