win32_specific.c
上传用户:riyaled888
上传日期:2009-03-27
资源大小:7338k
文件大小:12k
- /*****************************************************************************
- * win32_specific.c: Win32 specific features
- *****************************************************************************
- * Copyright (C) 2001-2004 VideoLAN
- * $Id: win32_specific.c 9106 2004-11-02 12:52:49Z gbazin $
- *
- * Authors: Samuel Hocevar <sam@zoy.org>
- * Gildas Bazin <gbazin@videolan.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- #include <string.h> /* strdup() */
- #include <stdlib.h> /* free() */
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #include "vlc_playlist.h"
- #ifdef WIN32 /* optind, getopt(), included in unistd.h */
- # include "../extras/getopt.h"
- #endif
- #if !defined( UNDER_CE )
- # include <io.h>
- # include <fcntl.h>
- #endif
- #include <winsock2.h>
- /*****************************************************************************
- * system_Init: initialize winsock and misc other things.
- *****************************************************************************/
- void system_Init( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
- {
- WSADATA Data;
- /* Get our full path */
- char psz_path[MAX_PATH];
- char *psz_vlc;
- #if defined( UNDER_CE )
- wchar_t psz_wpath[MAX_PATH];
- if( GetModuleFileName( NULL, psz_wpath, MAX_PATH ) )
- {
- WideCharToMultiByte( CP_ACP, 0, psz_wpath, -1,
- psz_path, MAX_PATH, NULL, NULL );
- }
- else psz_path[0] = ' ';
- #else
- if( ppsz_argv[0] )
- {
- GetFullPathName( ppsz_argv[0], MAX_PATH, psz_path, &psz_vlc );
- }
- else if( !GetModuleFileName( NULL, psz_path, MAX_PATH ) )
- {
- psz_path[0] = ' ';
- }
- #endif
- if( (psz_vlc = strrchr( psz_path, '\' )) ) *psz_vlc = ' ';
- p_this->p_libvlc->psz_vlcpath = strdup( psz_path );
- /* Set the default file-translation mode */
- #if !defined( UNDER_CE )
- _fmode = _O_BINARY;
- #endif
- _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
- /* Call mdate() once to make sure it is initialized properly */
- mdate();
- /* WinSock Library Init. */
- if( !WSAStartup( MAKEWORD( 2, 0 ), &Data ) )
- {
- /* Confirm that the WinSock DLL supports 2.0.*/
- if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 0 )
- {
- /* We could not find a suitable WinSock DLL. */
- WSACleanup( );
- }
- else
- {
- /* Everything went ok. */
- return;
- }
- }
- /* Let's try with WinSock 1.1 */
- if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
- {
- /* Confirm that the WinSock DLL supports 1.1.*/
- if( LOBYTE( Data.wVersion ) != 1 || HIBYTE( Data.wVersion ) != 1 )
- {
- /* We could not find a suitable WinSock DLL. */
- WSACleanup( );
- }
- else
- {
- /* Everything went ok. */
- return;
- }
- }
- fprintf( stderr, "error: can't initialize WinSocksn" );
- return;
- }
- /*****************************************************************************
- * system_Configure: check for system specific configuration options.
- *****************************************************************************/
- static void IPCHelperThread( vlc_object_t * );
- LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
- void system_Configure( vlc_t *p_this, int *pi_argc, char *ppsz_argv[] )
- {
- #if !defined( UNDER_CE )
- p_this->p_libvlc->b_fast_mutex = config_GetInt( p_this, "fast-mutex" );
- p_this->p_libvlc->i_win9x_cv = config_GetInt( p_this, "win9x-cv-method" );
- /* Raise default priority of the current process */
- #ifndef ABOVE_NORMAL_PRIORITY_CLASS
- # define ABOVE_NORMAL_PRIORITY_CLASS 0x00008000
- #endif
- if( config_GetInt( p_this, "high-priority" ) )
- {
- if( SetPriorityClass( GetCurrentProcess(), ABOVE_NORMAL_PRIORITY_CLASS )
- || SetPriorityClass( GetCurrentProcess(), HIGH_PRIORITY_CLASS ) )
- {
- msg_Dbg( p_this, "raised process priority" );
- }
- else
- {
- msg_Dbg( p_this, "could not raise process priority" );
- }
- }
- if( config_GetInt( p_this, "one-instance" ) )
- {
- HANDLE hmutex;
- msg_Info( p_this, "one instance mode ENABLED");
- /* Use a named mutex to check if another instance is already running */
- if( ( hmutex = CreateMutex( NULL, TRUE, "VLC ipc "VERSION ) ) == NULL )
- {
- /* Failed for some reason. Just ignore the option and go on as
- * normal. */
- msg_Err( p_this, "one instance mode DISABLED "
- "(mutex couldn't be created)" );
- return;
- }
- if( GetLastError() != ERROR_ALREADY_EXISTS )
- {
- /* We are the 1st instance. */
- vlc_object_t *p_helper =
- (vlc_object_t *)vlc_object_create( p_this, sizeof(vlc_object_t) );
- /* Run the helper thread */
- if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
- VLC_THREAD_PRIORITY_LOW, VLC_TRUE ) )
- {
- msg_Err( p_this, "one instance mode DISABLED "
- "(IPC helper thread couldn't be created)" );
- }
- /* Initialization done.
- * Release the mutex to unblock other instances */
- ReleaseMutex( hmutex );
- }
- else
- {
- /* Another instance is running */
- HWND ipcwindow;
- /* Wait until the 1st instance is initialized */
- WaitForSingleObject( hmutex, INFINITE );
- /* Locate the window created by the IPC helper thread of the
- * 1st instance */
- if( ( ipcwindow = FindWindow( NULL, "VLC ipc "VERSION ) )
- == NULL )
- {
- msg_Err( p_this, "one instance mode DISABLED "
- "(couldn't find 1st instance of program)" );
- ReleaseMutex( hmutex );
- return;
- }
- /* We assume that the remaining parameters are filenames
- * and their input options */
- if( *pi_argc - 1 >= optind )
- {
- COPYDATASTRUCT wm_data;
- int i_opt, i_data;
- char *p_data;
- i_data = sizeof(int);
- for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
- {
- i_data += sizeof(int);
- i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
- }
- p_data = (char *)malloc( i_data );
- *((int *)&p_data[0]) = *pi_argc - optind;
- i_data = sizeof(int);
- for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
- {
- int i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
- *((int *)&p_data[i_data]) = i_len;
- i_data += sizeof(int);
- memcpy( &p_data[i_data], ppsz_argv[ i_opt ], i_len );
- i_data += i_len;
- }
- /* Send our playlist items to the 1st instance */
- wm_data.dwData = 0;
- wm_data.cbData = i_data;
- wm_data.lpData = p_data;
- SendMessage( ipcwindow, WM_COPYDATA, 0, (LPARAM)&wm_data );
- }
- /* Initialization done.
- * Release the mutex to unblock other instances */
- ReleaseMutex( hmutex );
- /* Bye bye */
- system_End( p_this );
- exit( 0 );
- }
- }
- #endif
- }
- static void IPCHelperThread( vlc_object_t *p_this )
- {
- HWND ipcwindow;
- MSG message;
- ipcwindow =
- CreateWindow( "STATIC", /* name of window class */
- "VLC ipc "VERSION, /* window title bar text */
- 0, /* window style */
- 0, /* default X coordinate */
- 0, /* default Y coordinate */
- 0, /* window width */
- 0, /* window height */
- NULL, /* no parent window */
- NULL, /* no menu in this window */
- GetModuleHandle(NULL), /* handle of this program instance */
- NULL ); /* sent to WM_CREATE */
- SetWindowLong( ipcwindow, GWL_WNDPROC, (LONG)WMCOPYWNDPROC );
- SetWindowLong( ipcwindow, GWL_USERDATA, (LONG)p_this );
- /* Signal the creation of the thread and events queue */
- vlc_thread_ready( p_this );
- while( GetMessage( &message, NULL, 0, 0 ) )
- {
- TranslateMessage( &message );
- DispatchMessage( &message );
- }
- }
- LRESULT CALLBACK WMCOPYWNDPROC( HWND hwnd, UINT uMsg, WPARAM wParam,
- LPARAM lParam )
- {
- if( uMsg == WM_COPYDATA )
- {
- COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
- vlc_object_t *p_this;
- playlist_t *p_playlist;
- p_this = (vlc_object_t *)GetWindowLong( hwnd, GWL_USERDATA );
- if( !p_this ) return 0;
- /* Add files to the playlist */
- p_playlist = (playlist_t *)vlc_object_find( p_this,
- VLC_OBJECT_PLAYLIST,
- FIND_ANYWHERE );
- if( !p_playlist ) return 0;
- if( pwm_data->lpData )
- {
- int i_argc, i_data, i_opt, i_options;
- char **ppsz_argv;
- char *p_data = (char *)pwm_data->lpData;
- i_argc = *((int *)&p_data[0]);
- ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
- i_data = sizeof(int);
- for( i_opt = 0; i_opt < i_argc; i_opt++ )
- {
- ppsz_argv[i_opt] = &p_data[i_data + sizeof(int)];
- i_data += *((int *)&p_data[i_data]);
- i_data += sizeof(int);
- }
- for( i_opt = 0; i_opt < i_argc; i_opt++ )
- {
- i_options = 0;
- /* Count the input options */
- while( i_opt + i_options + 1 < i_argc &&
- *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
- {
- i_options++;
- }
- playlist_AddExt( p_playlist, ppsz_argv[i_opt],ppsz_argv[i_opt],
- PLAYLIST_APPEND | (i_opt? 0 : PLAYLIST_GO),
- PLAYLIST_END, -1,
- (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
- i_options );
- i_opt += i_options;
- }
- free( ppsz_argv );
- }
- vlc_object_release( p_playlist );
- }
- return DefWindowProc( hwnd, uMsg, wParam, lParam );
- }
- /*****************************************************************************
- * system_End: terminate winsock.
- *****************************************************************************/
- void system_End( vlc_t *p_this )
- {
- WSACleanup();
- }