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 #include "charset.h"
  31
  32 #ifdef WIN32                       /* optind, getopt(), included in unistd.h */
  33 #   include "../extras/getopt.h"
  34 #endif
  35
  36 #if !defined( UNDER_CE )
  37 #   include <io.h>
  38 #   include <fcntl.h>
  39 #endif
  40
  41 #include <winsock.h>
  42
  43 extern void __wgetmainargs(int *argc, wchar_t ***wargv, wchar_t ***wenviron,
  44                            int expand_wildcards, int *startupinfo);
  45
  46 /*****************************************************************************
  47  * system_Init: initialize winsock and misc other things.
  48  *****************************************************************************/
  49 void system_Init( libvlc_int_t *p_this, int *pi_argc, char *ppsz_argv[] )
  50 {
  51     WSADATA Data;
  52
  53     /* Get our full path */
  54     char psz_path[MAX_PATH];
  55     char *psz_vlc;
  56
  57 #if defined( UNDER_CE )
  58     wchar_t psz_wpath[MAX_PATH];
  59     if( GetModuleFileName( NULL, psz_wpath, MAX_PATH ) )
  60     {
  61         WideCharToMultiByte( CP_ACP, 0, psz_wpath, -1,
  62                              psz_path, MAX_PATH, NULL, NULL );
  63     }
  64     else psz_path[0] = '\0';
  65
  66 #else
  67     if( ppsz_argv[0] )
  68     {
  69         GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
  70     }
  71     else if( !GetModuleFileName( NULL, psz_path, MAX_PATH ) )
  72     {
  73         psz_path[0] = '\0';
  74     }
  75 #endif
  76
  77     if( (psz_vlc = strrchr( psz_path, '\\' )) ) *psz_vlc = '\0';
  78
  79     p_this->p_libvlc_global->psz_vlcpath = strdup( psz_path );
  80
  81     /* Set the default file-translation mode */
  82 #if !defined( UNDER_CE )
  83     _fmode = _O_BINARY;
  84     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  85 #endif
  86
  87     /* Call mdate() once to make sure it is initialized properly */
  88     mdate();
  89
  90     /* Replace argv[1..n] with unicode for Windows NT and above */
  91     if( GetVersion() < 0x80000000 )
  92     {
  93         wchar_t **wargv, **wenvp;
  94         int i,i_wargc;
  95         int si = { 0 };
  96         __wgetmainargs(&i_wargc, &wargv, &wenvp, 0, &si);
  97
  98         for( i = 1; i < i_wargc; i++ )
  99             ppsz_argv[i] = FromWide( wargv[i] );
 100     }
 101
 102     /* WinSock Library Init. */
 103     if( !WSAStartup( MAKEWORD( 2, 2 ), &Data ) )
 104     {
 105         /* Aah, pretty useless check, we should always have Winsock 2.2
 106          * since it appeared in Win98. */
 107         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 2 )
 108             /* We could not find a suitable WinSock DLL. */
 109             WSACleanup( );
 110         else
 111             /* Everything went ok. */
 112             return;
 113     }
 114
 115     /* Let's try with WinSock 1.1 */
 116     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
 117     {
 118         /* Confirm that the WinSock DLL supports 1.1.*/
 119         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
 120             /* We could not find a suitable WinSock DLL. */
 121             WSACleanup( );
 122         else
 123             /* Everything went ok. */
 124             return;
 125     }
 126
 127     fprintf( stderr, "error: can't initialize WinSocks\n" );
 128 }
 129
 130 /*****************************************************************************
 131  * system_Configure: check for system specific configuration options.
 132  *****************************************************************************/
 133 static void IPCHelperThread( vlc_object_t * );
 134 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 135
 136 void system_Configure( libvlc_int_t *p_this, int *pi_argc, char *ppsz_argv[] )
 137 {
 138 #if !defined( UNDER_CE )
 139     p_this->p_libvlc_global->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 140     p_this->p_libvlc_global->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 141
 142     /* Raise default priority of the current process */
 143 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 144 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 145 #endif
 146     if( config_GetInt( p_this, "high-priority" ) )
 147     {
 148         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 149              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 150         {
 151             msg_Dbg( p_this, "raised process priority" );
 152         }
 153         else
 154         {
 155             msg_Dbg( p_this, "could not raise process priority" );
 156         }
 157     }
 158
 159     if( config_GetInt( p_this, "one-instance" )
 160         || ( config_GetInt( p_this, "one-instance-when-started-from-file" )
 161              && config_GetInt( p_this, "started-from-file" ) ) )
 162     {
 163         HANDLE hmutex;
 164
 165         msg_Info( p_this, "one instance mode ENABLED");
 166
 167         /* Use a named mutex to check if another instance is already running */
 168         if( !( hmutex = CreateMutex( 0, TRUE, _T("VLC ipc ") _T(VERSION) ) ) )
 169         {
 170             /* Failed for some reason. Just ignore the option and go on as
 171              * normal. */
 172             msg_Err( p_this, "one instance mode DISABLED "
 173                      "(mutex couldn't be created)" );
 174             return;
 175         }
 176
 177         if( GetLastError() != ERROR_ALREADY_EXISTS )
 178         {
 179             /* We are the 1st instance. */
 180             vlc_object_t *p_helper =
 181              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 182
 183             /* Run the helper thread */
 184             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 185                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 186             {
 187                 msg_Err( p_this, "one instance mode DISABLED "
 188                          "(IPC helper thread couldn't be created)" );
 189
 190             }
 191
 192             /* Initialization done.
 193              * Release the mutex to unblock other instances */
 194             ReleaseMutex( hmutex );
 195         }
 196         else
 197         {
 198             /* Another instance is running */
 199
 200             HWND ipcwindow;
 201
 202             /* Wait until the 1st instance is initialized */
 203             WaitForSingleObject( hmutex, INFINITE );
 204
 205             /* Locate the window created by the IPC helper thread of the
 206              * 1st instance */
 207             if( !( ipcwindow = FindWindow( 0, _T("VLC ipc ") _T(VERSION) ) ) )
 208             {
 209                 msg_Err( p_this, "one instance mode DISABLED "
 210                          "(couldn't find 1st instance of program)" );
 211                 ReleaseMutex( hmutex );
 212                 return;
 213             }
 214
 215             /* We assume that the remaining parameters are filenames
 216              * and their input options */
 217             if( *pi_argc - 1 >= optind )
 218             {
 219                 COPYDATASTRUCT wm_data;
 220                 int i_opt, i_data;
 221                 char *p_data;
 222
 223                 i_data = sizeof(int);
 224                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 225                 {
 226                     i_data += sizeof(int);
 227                     i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 228                 }
 229
 230                 p_data = (char *)malloc( i_data );
 231                 *((int *)&p_data[0]) = *pi_argc - optind;
 232                 i_data = sizeof(int);
 233                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 234                 {
 235                     int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 236                     *((int *)&p_data[i_data]) = i_len;
 237                     i_data += sizeof(int);
 238                     memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 239                     i_data += i_len;
 240                 }
 241
 242                 /* Send our playlist items to the 1st instance */
 243                 wm_data.dwData = 0;
 244                 wm_data.cbData = i_data;
 245                 wm_data.lpData = p_data;
 246                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 247             }
 248
 249             /* Initialization done.
 250              * Release the mutex to unblock other instances */
 251             ReleaseMutex( hmutex );
 252
 253             /* Bye bye */
 254             system_End( p_this );
 255             exit( 0 );
 256         }
 257     }
 258
 259 #endif
 260 }
 261
 262 static void IPCHelperThread( vlc_object_t *p_this )
 263 {
 264     HWND ipcwindow;
 265     MSG message;
 266
 267     ipcwindow =
 268         CreateWindow( _T("STATIC"),                  /* name of window class */
 269                   _T("VLC ipc ") _T(VERSION),       /* window title bar text */
 270                   0,                                         /* window style */
 271                   0,                                 /* default X coordinate */
 272                   0,                                 /* default Y coordinate */
 273                   0,                                         /* window width */
 274                   0,                                        /* window height */
 275                   NULL,                                  /* no parent window */
 276                   NULL,                            /* no menu in this window */
 277                   GetModuleHandle(NULL),  /* handle of this program instance */
 278                   NULL );                               /* sent to WM_CREATE */
 279
 280     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 281     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 282
 283     /* Signal the creation of the thread and events queue */
 284     vlc_thread_ready( p_this );
 285
 286     while( GetMessage( &message, NULL, 0, 0 ) )
 287     {
 288         TranslateMessage( &message );
 289         DispatchMessage( &message );
 290     }
 291 }
 292
 293 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 294                                 LPARAM lParam )
 295 {
 296     if( uMsg == WM_COPYDATA )
 297     {
 298         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 299         vlc_object_t *p_this;
 300         playlist_t *p_playlist;
 301
 302         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 303
 304         if( !p_this ) return 0;
 305
 306         /* Add files to the playlist */
 307         p_playlist = (playlist_t *)vlc_object_find( p_this,
 308                                                     VLC_OBJECT_PLAYLIST,
 309                                                     FIND_ANYWHERE );
 310         if( !p_playlist ) return 0;
 311
 312         if( pwm_data->lpData )
 313         {
 314             int i_argc, i_data, i_opt, i_options;
 315             char **ppsz_argv;
 316             char *p_data = (char *)pwm_data->lpData;
 317
 318             i_argc = *((int *)&p_data[0]);
 319             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 320             i_data = sizeof(int);
 321             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 322             {
 323                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 324                 i_data += *((int *)&p_data[i_data]);
 325                 i_data += sizeof(int);
 326             }
 327
 328             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 329             {
 330                 i_options = 0;
 331
 332                 /* Count the input options */
 333                 while( i_opt + i_options + 1 < i_argc &&
 334                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 335                 {
 336                     i_options++;
 337                 }
 338                 if( i_opt || config_GetInt( p_this, "playlist-enqueue" ) )
 339                 {
 340                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 341                     NULL, PLAYLIST_APPEND ,
 342                     PLAYLIST_END, -1,
 343                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 344                     i_options, VLC_TRUE );
 345                 } else {
 346                   playlist_AddExt( p_playlist, ppsz_argv[i_opt],
 347                     NULL, PLAYLIST_APPEND | PLAYLIST_GO,
 348                     PLAYLIST_END, -1,
 349                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 350                     i_options, VLC_TRUE );
 351                 }
 352
 353                 i_opt += i_options;
 354             }
 355
 356             free( ppsz_argv );
 357         }
 358
 359         vlc_object_release( p_playlist );
 360     }
 361
 362     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 363 }
 364
 365 /*****************************************************************************
 366  * system_End: terminate winsock.
 367  *****************************************************************************/
 368 void system_End( libvlc_int_t *p_this )
 369 {
 370     if( p_this && p_this->p_libvlc_global && p_this->p_libvlc_global->psz_vlcpath )
 371     {
 372         free( p_this->p_libvlc_global->psz_vlcpath );
 373         p_this->p_libvlc_global->psz_vlcpath = NULL;
 374     }
 375
 376     WSACleanup();
 377 }