git.sesse.net Git - vlc/blob - src/misc/win32_specific.c

   1 /*****************************************************************************
   2  * win32_specific.c: Win32 specific features
   3  *****************************************************************************
   4  * Copyright (C) 2001 VideoLAN
   5  * $Id: win32_specific.c,v 1.26 2003/10/03 13:35:56 sam Exp $
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *          Gildas Bazin <gbazin@netcourrier.com>
   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_playlist.h"
  29
  30 #ifdef WIN32                       /* optind, getopt(), included in unistd.h */
  31 #   include "../extras/getopt.h"
  32 #endif
  33
  34 #if !defined( UNDER_CE )
  35 #   include <fcntl.h>
  36 #   include <winsock2.h>
  37 #endif
  38
  39 /*****************************************************************************
  40  * system_Init: initialize winsock and misc other things.
  41  *****************************************************************************/
  42 void system_Init( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
  43 {
  44 #if !defined( UNDER_CE )
  45     WSADATA Data;
  46
  47     /* Get our full path */
  48     if( ppsz_argv[0] )
  49     {
  50         char psz_path[MAX_PATH];
  51         char *psz_vlc;
  52
  53         GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
  54
  55         if( psz_vlc > psz_path && psz_vlc[-1] == '\\' )
  56         {
  57             psz_vlc[-1] = '\0';
  58             p_this->p_libvlc->psz_vlcpath = strdup( psz_path );
  59         }
  60         else
  61         {
  62             p_this->p_libvlc->psz_vlcpath = strdup( "" );
  63         }
  64     }
  65     else
  66     {
  67         p_this->p_libvlc->psz_vlcpath = strdup( "" );
  68     }
  69
  70     /* Set the default file-translation mode */
  71     _fmode = _O_BINARY;
  72     _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
  73
  74     /* WinSock Library Init. */
  75     if( !WSAStartup( MAKEWORD( 2, 0 ), &Data ) )
  76     {
  77         /* Confirm that the WinSock DLL supports 2.0.*/
  78         if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 0 )
  79         {
  80             /* We could not find a suitable WinSock DLL. */
  81             WSACleanup( );
  82         }
  83         else
  84         {
  85             /* Everything went ok. */
  86             return;
  87         }
  88     }
  89
  90     /* Let's try with WinSock 1.1 */
  91     if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
  92     {
  93         /* Confirm that the WinSock DLL supports 1.1.*/
  94         if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
  95         {
  96             /* We could not find a suitable WinSock DLL. */
  97             WSACleanup( );
  98         }
  99         else
 100         {
 101             /* Everything went ok. */
 102             return;
 103         }
 104     }
 105
 106     fprintf( stderr, "error: can't initialize WinSocks\n" );
 107
 108     return;
 109
 110 #endif
 111 }
 112
 113 /*****************************************************************************
 114  * system_Configure: check for system specific configuration options.
 115  *****************************************************************************/
 116 static void IPCHelperThread( vlc_object_t * );
 117 LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
 118
 119 void system_Configure( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
 120 {
 121 #if !defined( UNDER_CE )
 122     p_this->p_libvlc->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
 123     p_this->p_libvlc->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
 124
 125     /* Raise default priority of the current process */
 126 #ifndef ABOVE_NORMAL_PRIORITY_CLASS
 127 #   define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
 128 #endif
 129     if( config_GetInt( p_this, "high-priority" ) )
 130     {
 131         if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
 132              || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
 133         {
 134             msg_Dbg( p_this, "raised process priority" );
 135         }
 136         else
 137         {
 138             msg_Dbg( p_this, "could not raise process priority" );
 139         }
 140     }
 141
 142     if( config_GetInt( p_this, "one-instance" ) )
 143     {
 144         HANDLE hmutex;
 145
 146         msg_Info( p_this, "One instance mode ENABLED");
 147
 148         /* Use a named mutex to check if another instance is already running */
 149         if( ( hmutex = CreateMutex( NULL, TRUE, "VLC ipc "VERSION ) ) == NULL )
 150         {
 151             /* Failed for some reason. Just ignore the option and go on as
 152              * normal. */
 153             msg_Err( p_this, "One instance mode DISABLED "
 154                      "(mutex couldn't be created)" );
 155             return;
 156         }
 157
 158         if( GetLastError() != ERROR_ALREADY_EXISTS )
 159         {
 160             /* We are the 1st instance. */
 161             vlc_object_t *p_helper =
 162              (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
 163
 164             /* Run the helper thread */
 165             if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
 166                                    VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
 167             {
 168                 msg_Err( p_this, "One instance mode DISABLED "
 169                          "(IPC helper thread couldn't be created)" );
 170
 171             }
 172
 173             /* Initialization done.
 174              * Release the mutex to unblock other instances */
 175             ReleaseMutex( hmutex );
 176         }
 177         else
 178         {
 179             /* Another instance is running */
 180
 181             HWND ipcwindow;
 182
 183             /* Wait until the 1st instance is initialized */
 184             WaitForSingleObject( hmutex, INFINITE );
 185
 186             /* Locate the window created by the IPC helper thread of the
 187              * 1st instance */
 188             if( ( ipcwindow = FindWindow( NULL, "VLC ipc "VERSION ) )
 189                 == NULL )
 190             {
 191                 msg_Err( p_this, "One instance mode DISABLED "
 192                          "(couldn't find 1st instance of program)" );
 193                 ReleaseMutex( hmutex );
 194                 return;
 195             }
 196
 197             /* We assume that the remaining parameters are filenames
 198              * and their input options */
 199             if( *pi_argc - 1 >= optind )
 200             {
 201                 COPYDATASTRUCT wm_data;
 202                 int i_opt, i_data;
 203                 char *p_data;
 204
 205                 i_data = sizeof(int);
 206                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 207                 {
 208                     i_data += sizeof(int);
 209                     i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
 210                 }
 211
 212                 p_data = (char *)malloc( i_data );
 213                 *((int *)&p_data[0]) = *pi_argc - optind;
 214                 i_data = sizeof(int);
 215                 for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
 216                 {
 217                     int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
 218                     *((int *)&p_data[i_data]) = i_len;
 219                     i_data += sizeof(int);
 220                     memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
 221                     i_data += i_len;
 222                 }
 223
 224                 /* Send our playlist items to the 1st instance */
 225                 wm_data.dwData = 0;
 226                 wm_data.cbData = i_data;
 227                 wm_data.lpData = p_data;
 228                 SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
 229             }
 230
 231             /* Initialization done.
 232              * Release the mutex to unblock other instances */
 233             ReleaseMutex( hmutex );
 234
 235             /* Bye bye */
 236             system_End( p_this );
 237             exit( 0 );
 238         }
 239     }
 240
 241 #endif
 242 }
 243
 244 static void IPCHelperThread( vlc_object_t *p_this )
 245 {
 246     HWND ipcwindow;
 247     MSG message;
 248
 249     ipcwindow =
 250         CreateWindow( "STATIC",                      /* name of window class */
 251                   "VLC ipc "VERSION,                /* window title bar text */
 252                   0,                                         /* window style */
 253                   0,                                 /* default X coordinate */
 254                   0,                                 /* default Y coordinate */
 255                   0,                                         /* window width */
 256                   0,                                        /* window height */
 257                   NULL,                                  /* no parent window */
 258                   NULL,                            /* no menu in this window */
 259                   GetModuleHandle(NULL),  /* handle of this program instance */
 260                   NULL );                               /* sent to WM_CREATE */
 261
 262     SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
 263     SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
 264
 265     /* Signal the creation of the thread and events queue */
 266     vlc_thread_ready( p_this );
 267
 268     while( GetMessage( &message, NULL, 0, 0 ) )
 269     {
 270         TranslateMessage( &message );
 271         DispatchMessage( &message );
 272     }
 273 }
 274
 275 LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
 276                                 LPARAM lParam )
 277 {
 278     if( uMsg == WM_COPYDATA )
 279     {
 280         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
 281         vlc_object_t *p_this;
 282         playlist_t *p_playlist;
 283
 284         p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
 285
 286         if( !p_this ) return 0;
 287
 288         /* Add files to the playlist */
 289         p_playlist = (playlist_t *)vlc_object_find( p_this,
 290                                                     VLC_OBJECT_PLAYLIST,
 291                                                     FIND_ANYWHERE );
 292         if( !p_playlist ) return 0;
 293
 294         if( pwm_data->lpData )
 295         {
 296             int i_argc, i_data, i_opt, i_options;
 297             char **ppsz_argv;
 298             char *p_data = (char *)pwm_data->lpData;
 299
 300             i_argc = *((int *)&p_data[0]);
 301             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
 302             i_data = sizeof(int);
 303             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 304             {
 305                 ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
 306                 i_data += *((int *)&p_data[i_data]);
 307                 i_data += sizeof(int);
 308             }
 309
 310             for( i_opt = 0; i_opt < i_argc; i_opt++ )
 311             {
 312                 i_options = 0;
 313
 314                 /* Count the input options */
 315                 while( i_opt + i_options + 1 < i_argc &&
 316                        *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
 317                 {
 318                     i_options++;
 319                 }
 320
 321                 playlist_Add( p_playlist, ppsz_argv[ i_opt ],
 322                     (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 323                     i_options, PLAYLIST_APPEND | (i_opt? 0 : PLAYLIST_GO),
 324                     PLAYLIST_END );
 325
 326                 i_opt += i_options;
 327             }
 328
 329             free( ppsz_argv );
 330         }
 331
 332         vlc_object_release( p_playlist );
 333     }
 334
 335     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 336 }
 337
 338 /*****************************************************************************
 339  * system_End: terminate winsock.
 340  *****************************************************************************/
 341 void system_End( vlc_t *p_this )
 342 {
 343 #if !defined( UNDER_CE )
 344     WSACleanup();
 345 #endif
 346 }