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 #   include <winsock2.h>
  39 #endif
  40
  41 /*****************************************************************************
  42  * system_Init: initialize winsock and misc other things.
  43  *****************************************************************************/
  44 void system_Init( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
  45 {
  46 #if !defined( UNDER_CE )
  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         GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
  56
  57         if( psz_vlc > psz_path && psz_vlc[-1] == '\\' )
  58         {
  59             psz_vlc[-1] = '\0';
  60             p_this->p_libvlc->psz_vlcpath = strdup( psz_path );
  61         }
  62         else
  63         {
  64             p_this->p_libvlc->psz_vlcpath = strdup( "" );
  65         }
  66     }
  67     else
  68     {
  69         p_this->p_libvlc->psz_vlcpath = strdup( "" );
  70     }
  71
  72     /* Set the default file-translation mode */
  73     _fmode = _O_BINARY;
  74     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  75
  76     /* Call mdate() once to make sure it is initialized properly */
  77     mdate();
  78
  79     /* WinSock Library Init. */
  80     if( !WSAStartup( MAKEWORD( 2, 0 ), &Data ) )
  81     {
  82         /* Confirm that the WinSock DLL supports 2.0.*/
  83         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 0 )
  84         {
  85             /* We could not find a suitable WinSock DLL. */
  86             WSACleanup( );
  87         }
  88         else
  89         {
  90             /* Everything went ok. */
  91             return;
  92         }
  93     }
  94
  95     /* Let's try with WinSock 1.1 */
  96     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
  97     {
  98         /* Confirm that the WinSock DLL supports 1.1.*/
  99         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
 100         {
 101             /* We could not find a suitable WinSock DLL. */
 102             WSACleanup( );
 103         }
 104         else
 105         {
 106             /* Everything went ok. */
 107             return;
 108         }
 109     }
 110
 111     fprintf( stderr, "error: can't initialize WinSocks\n" );
 112
 113     return;
 114
 115 #endif
 116 }
 117
 118 /*****************************************************************************
 119  * system_Configure: check for system specific configuration options.
 120  *****************************************************************************/
 121 static void IPCHelperThread( vlc_object_t * );
 122 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 123
 124 void system_Configure( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
 125 {
 126 #if !defined( UNDER_CE )
 127     p_this->p_libvlc->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 128     p_this->p_libvlc->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 129
 130     /* Raise default priority of the current process */
 131 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 132 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 133 #endif
 134     if( config_GetInt( p_this, "high-priority" ) )
 135     {
 136         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 137              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 138         {
 139             msg_Dbg( p_this, "raised process priority" );
 140         }
 141         else
 142         {
 143             msg_Dbg( p_this, "could not raise process priority" );
 144         }
 145     }
 146
 147     if( config_GetInt( p_this, "one-instance" ) )
 148     {
 149         HANDLE hmutex;
 150
 151         msg_Info( p_this, "one instance mode ENABLED");
 152
 153         /* Use a named mutex to check if another instance is already running */
 154         if( ( hmutex = CreateMutex( NULL, TRUE, "VLC ipc "VERSION ) ) == NULL )
 155         {
 156             /* Failed for some reason. Just ignore the option and go on as
 157              * normal. */
 158             msg_Err( p_this, "one instance mode DISABLED "
 159                      "(mutex couldn't be created)" );
 160             return;
 161         }
 162
 163         if( GetLastError() != ERROR_ALREADY_EXISTS )
 164         {
 165             /* We are the 1st instance. */
 166             vlc_object_t *p_helper =
 167              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 168
 169             /* Run the helper thread */
 170             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 171                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 172             {
 173                 msg_Err( p_this, "one instance mode DISABLED "
 174                          "(IPC helper thread couldn't be created)" );
 175
 176             }
 177
 178             /* Initialization done.
 179              * Release the mutex to unblock other instances */
 180             ReleaseMutex( hmutex );
 181         }
 182         else
 183         {
 184             /* Another instance is running */
 185
 186             HWND ipcwindow;
 187
 188             /* Wait until the 1st instance is initialized */
 189             WaitForSingleObject( hmutex, INFINITE );
 190
 191             /* Locate the window created by the IPC helper thread of the
 192              * 1st instance */
 193             if( ( ipcwindow = FindWindow( NULL, "VLC ipc "VERSION ) )
 194                 == NULL )
 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( "STATIC",                      /* name of window class */
 256                   "VLC ipc "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
 326                 playlist_AddExt( p_playlist, ppsz_argv[i_opt],ppsz_argv[i_opt],
 327                     PLAYLIST_APPEND | (i_opt? 0 : PLAYLIST_GO),
 328                     PLAYLIST_END, -1,
 329                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 330                     i_options );
 331
 332                 i_opt += i_options;
 333             }
 334
 335             free( ppsz_argv );
 336         }
 337
 338         vlc_object_release( p_playlist );
 339     }
 340
 341     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 342 }
 343
 344 /*****************************************************************************
 345  * system_End: terminate winsock.
 346  *****************************************************************************/
 347 void system_End( vlc_t *p_this )
 348 {
 349 #if !defined( UNDER_CE )
 350     WSACleanup();
 351 #endif
 352 }