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