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 /*****************************************************************************
  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( !GetModuleFileName( NULL, psz_path, MAX_PATH ) )
  64     {
  65         psz_path[0] = '\0';
  66     }
  67 #endif
  68
  69     if( (psz_vlc = strrchr( psz_path, '\\' )) ) *psz_vlc = '\0';
  70
  71     p_this->p_libvlc->psz_vlcpath = strdup( psz_path );
  72
  73     /* Set the default file-translation mode */
  74 #if !defined( UNDER_CE )
  75     _fmode = _O_BINARY;
  76     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  77 #endif
  78
  79     /* Call mdate() once to make sure it is initialized properly */
  80     mdate();
  81
  82     /* WinSock Library Init. */
  83     if( !WSAStartup( MAKEWORD( 2, 0 ), &Data ) )
  84     {
  85         /* Confirm that the WinSock DLL supports 2.0.*/
  86         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 0 )
  87         {
  88             /* We could not find a suitable WinSock DLL. */
  89             WSACleanup( );
  90         }
  91         else
  92         {
  93             /* Everything went ok. */
  94             return;
  95         }
  96     }
  97
  98     /* Let's try with WinSock 1.1 */
  99     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
 100     {
 101         /* Confirm that the WinSock DLL supports 1.1.*/
 102         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
 103         {
 104             /* We could not find a suitable WinSock DLL. */
 105             WSACleanup( );
 106         }
 107         else
 108         {
 109             /* Everything went ok. */
 110             return;
 111         }
 112     }
 113
 114     fprintf( stderr, "error: can't initialize WinSocks\n" );
 115
 116     return;
 117 }
 118
 119 /*****************************************************************************
 120  * system_Configure: check for system specific configuration options.
 121  *****************************************************************************/
 122 static void IPCHelperThread( vlc_object_t * );
 123 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 124
 125 void system_Configure( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
 126 {
 127 #if !defined( UNDER_CE )
 128     p_this->p_libvlc->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 129     p_this->p_libvlc->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 130
 131     /* Raise default priority of the current process */
 132 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 133 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 134 #endif
 135     if( config_GetInt( p_this, "high-priority" ) )
 136     {
 137         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 138              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 139         {
 140             msg_Dbg( p_this, "raised process priority" );
 141         }
 142         else
 143         {
 144             msg_Dbg( p_this, "could not raise process priority" );
 145         }
 146     }
 147
 148     if( config_GetInt( p_this, "one-instance" ) )
 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
 210                 i_data = sizeof(int);
 211                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 212                 {
 213                     i_data += sizeof(int);
 214                     i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 215                 }
 216
 217                 p_data = (char *)malloc( i_data );
 218                 *((int *)&p_data[0]) = *pi_argc - optind;
 219                 i_data = sizeof(int);
 220                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 221                 {
 222                     int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 223                     *((int *)&p_data[i_data]) = i_len;
 224                     i_data += sizeof(int);
 225                     memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 226                     i_data += i_len;
 227                 }
 228
 229                 /* Send our playlist items to the 1st instance */
 230                 wm_data.dwData = 0;
 231                 wm_data.cbData = i_data;
 232                 wm_data.lpData = p_data;
 233                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 234             }
 235
 236             /* Initialization done.
 237              * Release the mutex to unblock other instances */
 238             ReleaseMutex( hmutex );
 239
 240             /* Bye bye */
 241             system_End( p_this );
 242             exit( 0 );
 243         }
 244     }
 245
 246 #endif
 247 }
 248
 249 static void IPCHelperThread( vlc_object_t *p_this )
 250 {
 251     HWND ipcwindow;
 252     MSG message;
 253
 254     ipcwindow =
 255         CreateWindow( _T("STATIC"),                  /* name of window class */
 256                   _T("VLC ipc ") _T(VERSION),       /* window title bar text */
 257                   0,                                         /* window style */
 258                   0,                                 /* default X coordinate */
 259                   0,                                 /* default Y coordinate */
 260                   0,                                         /* window width */
 261                   0,                                        /* window height */
 262                   NULL,                                  /* no parent window */
 263                   NULL,                            /* no menu in this window */
 264                   GetModuleHandle(NULL),  /* handle of this program instance */
 265                   NULL );                               /* sent to WM_CREATE */
 266
 267     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 268     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 269
 270     /* Signal the creation of the thread and events queue */
 271     vlc_thread_ready( p_this );
 272
 273     while( GetMessage( &message, NULL, 0, 0 ) )
 274     {
 275         TranslateMessage( &message );
 276         DispatchMessage( &message );
 277     }
 278 }
 279
 280 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 281                                 LPARAM lParam )
 282 {
 283     if( uMsg == WM_COPYDATA )
 284     {
 285         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 286         vlc_object_t *p_this;
 287         playlist_t *p_playlist;
 288
 289         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 290
 291         if( !p_this ) return 0;
 292
 293         /* Add files to the playlist */
 294         p_playlist = (playlist_t *)vlc_object_find( p_this,
 295                                                     VLC_OBJECT_PLAYLIST,
 296                                                     FIND_ANYWHERE );
 297         if( !p_playlist ) return 0;
 298
 299         if( pwm_data->lpData )
 300         {
 301             int i_argc, i_data, i_opt, i_options;
 302             char **ppsz_argv;
 303             char *p_data = (char *)pwm_data->lpData;
 304
 305             i_argc = *((int *)&p_data[0]);
 306             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 307             i_data = sizeof(int);
 308             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 309             {
 310                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 311                 i_data += *((int *)&p_data[i_data]);
 312                 i_data += sizeof(int);
 313             }
 314
 315             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 316             {
 317                 i_options = 0;
 318
 319                 /* Count the input options */
 320                 while( i_opt + i_options + 1 < i_argc &&
 321                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 322                 {
 323                     i_options++;
 324                 }
 325                 if( i_opt || config_GetInt( p_this, "playlist-enqueue" ) )
 326                 {
 327                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 328                     ppsz_argv[i_opt], PLAYLIST_APPEND ,
 329                     PLAYLIST_END, -1,
 330                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 331                     i_options );
 332                 } else {
 333                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 334                     ppsz_argv[i_opt], PLAYLIST_APPEND | PLAYLIST_GO,
 335                     PLAYLIST_END, -1,
 336                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 337                     i_options );
 338                 }
 339
 340                 i_opt += i_options;
 341             }
 342
 343             free( ppsz_argv );
 344         }
 345
 346         vlc_object_release( p_playlist );
 347     }
 348
 349     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 350 }
 351
 352 /*****************************************************************************
 353  * system_End: terminate winsock.
 354  *****************************************************************************/
 355 void system_End( vlc_t *p_this )
 356 {
 357     if( p_this && p_this->p_libvlc && p_this->p_libvlc->psz_vlcpath )
 358     {
 359         free( p_this->p_libvlc->psz_vlcpath );
 360         p_this->p_libvlc->psz_vlcpath = NULL;
 361     }
 362
 363     WSACleanup();
 364 }