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( 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, 2 ), &Data ) )
  88     {
  89         /* Aah, pretty useless check, we should always have Winsock 2.2
  90          * since it appeared in Win98. */
  91         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 2 )
  92             /* We could not find a suitable WinSock DLL. */
  93             WSACleanup( );
  94         else
  95             /* Everything went ok. */
  96             return;
  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             /* We could not find a suitable WinSock DLL. */
 105             WSACleanup( );
 106         else
 107             /* Everything went ok. */
 108             return;
 109     }
 110
 111     fprintf( stderr, "error: can't initialize WinSocks\n" );
 112 }
 113
 114 /*****************************************************************************
 115  * system_Configure: check for system specific configuration options.
 116  *****************************************************************************/
 117 static void IPCHelperThread( vlc_object_t * );
 118 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 119
 120 void system_Configure( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
 121 {
 122 #if !defined( UNDER_CE )
 123     p_this->p_libvlc->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 124     p_this->p_libvlc->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 125
 126     /* Raise default priority of the current process */
 127 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 128 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 129 #endif
 130     if( config_GetInt( p_this, "high-priority" ) )
 131     {
 132         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 133              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 134         {
 135             msg_Dbg( p_this, "raised process priority" );
 136         }
 137         else
 138         {
 139             msg_Dbg( p_this, "could not raise process priority" );
 140         }
 141     }
 142
 143     if( config_GetInt( p_this, "one-instance" )
 144         || ( config_GetInt( p_this, "one-instance-when-started-from-file" )
 145              && config_GetInt( p_this, "started-from-file" ) ) )
 146     {
 147         HANDLE hmutex;
 148
 149         msg_Info( p_this, "one instance mode ENABLED");
 150
 151         /* Use a named mutex to check if another instance is already running */
 152         if( !( hmutex = CreateMutex( 0, TRUE, _T("VLC ipc ") _T(VERSION) ) ) )
 153         {
 154             /* Failed for some reason. Just ignore the option and go on as
 155              * normal. */
 156             msg_Err( p_this, "one instance mode DISABLED "
 157                      "(mutex couldn't be created)" );
 158             return;
 159         }
 160
 161         if( GetLastError() != ERROR_ALREADY_EXISTS )
 162         {
 163             /* We are the 1st instance. */
 164             vlc_object_t *p_helper =
 165              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 166
 167             /* Run the helper thread */
 168             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 169                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 170             {
 171                 msg_Err( p_this, "one instance mode DISABLED "
 172                          "(IPC helper thread couldn't be created)" );
 173
 174             }
 175
 176             /* Initialization done.
 177              * Release the mutex to unblock other instances */
 178             ReleaseMutex( hmutex );
 179         }
 180         else
 181         {
 182             /* Another instance is running */
 183
 184             HWND ipcwindow;
 185
 186             /* Wait until the 1st instance is initialized */
 187             WaitForSingleObject( hmutex, INFINITE );
 188
 189             /* Locate the window created by the IPC helper thread of the
 190              * 1st instance */
 191             if( !( ipcwindow = FindWindow( 0, _T("VLC ipc ") _T(VERSION) ) ) )
 192             {
 193                 msg_Err( p_this, "one instance mode DISABLED "
 194                          "(couldn't find 1st instance of program)" );
 195                 ReleaseMutex( hmutex );
 196                 return;
 197             }
 198
 199             /* We assume that the remaining parameters are filenames
 200              * and their input options */
 201             if( *pi_argc - 1 >= optind )
 202             {
 203                 COPYDATASTRUCT wm_data;
 204                 int i_opt, i_data;
 205                 char *p_data;
 206
 207                 i_data = sizeof(int);
 208                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 209                 {
 210                     i_data += sizeof(int);
 211                     i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 212                 }
 213
 214                 p_data = (char *)malloc( i_data );
 215                 *((int *)&p_data[0]) = *pi_argc - optind;
 216                 i_data = sizeof(int);
 217                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 218                 {
 219                     int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 220                     *((int *)&p_data[i_data]) = i_len;
 221                     i_data += sizeof(int);
 222                     memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 223                     i_data += i_len;
 224                 }
 225
 226                 /* Send our playlist items to the 1st instance */
 227                 wm_data.dwData = 0;
 228                 wm_data.cbData = i_data;
 229                 wm_data.lpData = p_data;
 230                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 231             }
 232
 233             /* Initialization done.
 234              * Release the mutex to unblock other instances */
 235             ReleaseMutex( hmutex );
 236
 237             /* Bye bye */
 238             system_End( p_this );
 239             exit( 0 );
 240         }
 241     }
 242
 243 #endif
 244 }
 245
 246 static void IPCHelperThread( vlc_object_t *p_this )
 247 {
 248     HWND ipcwindow;
 249     MSG message;
 250
 251     ipcwindow =
 252         CreateWindow( _T("STATIC"),                  /* name of window class */
 253                   _T("VLC ipc ") _T(VERSION),       /* window title bar text */
 254                   0,                                         /* window style */
 255                   0,                                 /* default X coordinate */
 256                   0,                                 /* default Y coordinate */
 257                   0,                                         /* window width */
 258                   0,                                        /* window height */
 259                   NULL,                                  /* no parent window */
 260                   NULL,                            /* no menu in this window */
 261                   GetModuleHandle(NULL),  /* handle of this program instance */
 262                   NULL );                               /* sent to WM_CREATE */
 263
 264     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 265     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 266
 267     /* Signal the creation of the thread and events queue */
 268     vlc_thread_ready( p_this );
 269
 270     while( GetMessage( &message, NULL, 0, 0 ) )
 271     {
 272         TranslateMessage( &message );
 273         DispatchMessage( &message );
 274     }
 275 }
 276
 277 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 278                                 LPARAM lParam )
 279 {
 280     if( uMsg == WM_COPYDATA )
 281     {
 282         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 283         vlc_object_t *p_this;
 284         playlist_t *p_playlist;
 285
 286         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 287
 288         if( !p_this ) return 0;
 289
 290         /* Add files to the playlist */
 291         p_playlist = (playlist_t *)vlc_object_find( p_this,
 292                                                     VLC_OBJECT_PLAYLIST,
 293                                                     FIND_ANYWHERE );
 294         if( !p_playlist ) return 0;
 295
 296         if( pwm_data->lpData )
 297         {
 298             int i_argc, i_data, i_opt, i_options;
 299             char **ppsz_argv;
 300             char *p_data = (char *)pwm_data->lpData;
 301
 302             i_argc = *((int *)&p_data[0]);
 303             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 304             i_data = sizeof(int);
 305             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 306             {
 307                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 308                 i_data += *((int *)&p_data[i_data]);
 309                 i_data += sizeof(int);
 310             }
 311
 312             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 313             {
 314                 i_options = 0;
 315
 316                 /* Count the input options */
 317                 while( i_opt + i_options + 1 < i_argc &&
 318                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 319                 {
 320                     i_options++;
 321                 }
 322                 if( i_opt || config_GetInt( p_this, "playlist-enqueue" ) )
 323                 {
 324                   playlist_PlaylistAddExt( p_playlist, ppsz_argv[i_opt],
 325                     ppsz_argv[i_opt], PLAYLIST_APPEND ,
 326                     PLAYLIST_END, -1,
 327                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 328                     i_options );
 329                 } else {
 330                   playlist_PlaylistAddExt( p_playlist, ppsz_argv[i_opt],
 331                     ppsz_argv[i_opt], PLAYLIST_APPEND | PLAYLIST_GO,
 332                     PLAYLIST_END, -1,
 333                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 334                     i_options );
 335                 }
 336
 337                 i_opt += i_options;
 338             }
 339
 340             free( ppsz_argv );
 341         }
 342
 343         vlc_object_release( p_playlist );
 344     }
 345
 346     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 347 }
 348
 349 /*****************************************************************************
 350  * system_End: terminate winsock.
 351  *****************************************************************************/
 352 void system_End( vlc_t *p_this )
 353 {
 354     if( p_this && p_this->p_libvlc && p_this->p_libvlc->psz_vlcpath )
 355     {
 356         free( p_this->p_libvlc->psz_vlcpath );
 357         p_this->p_libvlc->psz_vlcpath = NULL;
 358     }
 359
 360     WSACleanup();
 361 }