]> git.sesse.net Git - vlc/blobdiff - src/misc/win32_specific.c
Do not leak the IPC helper - might fix #1598
[vlc] / src / misc / win32_specific.c
index b5344340c3ed39a12d9b1a14aafb1446a230b5d7..17af95b2cdb9c91bc29a197f7617c5e855158d23 100644 (file)
@@ -1,17 +1,17 @@
 /*****************************************************************************
- * win32_specific.c: Win32 specific features 
+ * win32_specific.c: Win32 specific features
  *****************************************************************************
- * Copyright (C) 2001 VideoLAN
- * $Id: win32_specific.c,v 1.6 2002/04/02 23:43:57 gbazin Exp $
+ * Copyright (C) 2001-2004 the VideoLAN team
+ * $Id$
  *
  * Authors: Samuel Hocevar <sam@zoy.org>
- *          Gildas Bazin <gbazin@netcourrier.com>
+ *          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
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  *****************************************************************************/
-#include <errno.h>                                                 /* ENOMEM */
-#include <string.h>                                              /* strdup() */
-#include <stdlib.h>                                                /* free() */
-#include <fcntl.h>
 
-#include <winsock2.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#define UNICODE
+#include <vlc_common.h>
+#include "../libvlc.h"
+#include <vlc_playlist.h>
+#include <vlc_charset.h>
+
+#include "../extras/getopt.h"
 
-#include <videolan/vlc.h>
+#if !defined( UNDER_CE )
+#   include <io.h>
+#   include <fcntl.h>
+#   include  <mmsystem.h>
+#endif
+
+#include <winsock.h>
 
 /*****************************************************************************
  * system_Init: initialize winsock and misc other things.
  *****************************************************************************/
-void system_Init( int *pi_argc, char *ppsz_argv[], char *ppsz_env[] )
+void system_Init( libvlc_int_t *p_this, int *pi_argc, const char *ppsz_argv[] )
 {
     WSADATA Data;
-    int i_err;
-    HINSTANCE hInstLib;
 
-    /* Allocate structure */
-    p_main_sys = malloc( sizeof( main_sys_t ) );
-    if( p_main_sys == NULL )
+    /* Get our full path */
+    char psz_path[MAX_PATH];
+    char *psz_vlc;
+
+    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] = '\0';
+
+    if( (psz_vlc = strrchr( psz_path, '\\' )) ) *psz_vlc = '\0';
+
+#ifndef HAVE_RELEASE
     {
-        intf_ErrMsg( "init error: can't create p_main_sys (%s)",
-                    strerror(ENOMEM) );
-        exit(-1);
+        /* remove trailing \.libs from executable dir path if seen,
+           we assume we are running vlc through libtool wrapper in build dir */
+        int offset  = strlen(psz_path)-sizeof("\\.libs")+1;
+        if( offset > 0 )
+        {
+            psz_vlc = psz_path+offset;
+            if( ! strcmp(psz_vlc, "\\.libs") ) *psz_vlc = '\0';
+        }
     }
+#endif
 
-    /* dynamically get the address of SignalObjectAndWait */
-    hInstLib = LoadLibrary( "kernel32" );
-    p_main_sys->SignalObjectAndWait =
-        (SIGNALOBJECTANDWAIT)GetProcAddress( hInstLib, "SignalObjectAndWait" );
+    vlc_global()->psz_vlcpath = strdup( psz_path );
+
+    /* Set the default file-translation mode */
+#if !defined( UNDER_CE )
+    _fmode = _O_BINARY;
+    _setmode( _fileno( stdin ), _O_BINARY ); /* Needed for pipes */
+
+    timeBeginPeriod(5);
+#endif
+
+    /* Call mdate() once to make sure it is initialized properly */
+    mdate();
 
     /* WinSock Library Init. */
-    i_err = WSAStartup( MAKEWORD( 1, 1 ), &Data );
+    if( !WSAStartup( MAKEWORD( 2, 2 ), &Data ) )
+    {
+        /* Aah, pretty useless check, we should always have Winsock 2.2
+         * since it appeared in Win98. */
+        if( LOBYTE( Data.wVersion ) != 2 || HIBYTE( Data.wVersion ) != 2 )
+            /* We could not find a suitable WinSock DLL. */
+            WSACleanup( );
+        else
+            /* Everything went ok. */
+            return;
+    }
 
-    if( i_err )
+    /* Let's try with WinSock 1.1 */
+    if( !WSAStartup( MAKEWORD( 1, 1 ), &Data ) )
     {
-        fprintf( stderr, "error: can't initiate WinSocks, error %i", i_err );
+        /* 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;
     }
 
-    _fmode = _O_BINARY;  /* sets the default file-translation mode */
+    fprintf( stderr, "error: can't initialize WinSocks\n" );
 }
 
 /*****************************************************************************
  * system_Configure: check for system specific configuration options.
  *****************************************************************************/
-void system_Configure( void )
+static void IPCHelperThread( vlc_object_t * );
+LRESULT CALLBACK WMCOPYWNDPROC( HWND, UINT, WPARAM, LPARAM );
+typedef struct
+{
+  int argc;
+  int enqueue;
+  char data[0];
+} vlc_ipc_data_t;
+
+void system_Configure( libvlc_int_t *p_this, int *pi_argc, const char *ppsz_argv[] )
+{
+#if !defined( UNDER_CE )
+    /* 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" );
+        }
+    }
+
+    libvlc_priv (p_this)->ipc_helper = NULL;
+
+    if( config_GetInt( p_this, "one-instance" )
+        || ( config_GetInt( p_this, "one-instance-when-started-from-file" )
+             && config_GetInt( p_this, "started-from-file" ) ) )
+    {
+        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( 0, TRUE, L"VLC ipc "VERSION ) ) )
+        {
+            /* 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. */
+            static const char typename[] = "ipc helper";
+            vlc_object_t *p_helper =
+                vlc_custom_create( p_this, sizeof(vlc_object_t),
+                                   VLC_OBJECT_GENERIC, typename );
+
+            /* Run the helper thread */
+            if( vlc_thread_create( p_helper, "IPC helper", IPCHelperThread,
+                                   VLC_THREAD_PRIORITY_LOW, true ) )
+            {
+                msg_Err( p_this, "one instance mode DISABLED "
+                         "(IPC helper thread couldn't be created)" );
+                vlc_object_release (p_helper);
+            }
+            else
+                libvlc_priv (p_this)->ipc_helper = p_helper;
+
+            /* 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( 0, L"VLC ipc "VERSION ) ) )
+            {
+                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;
+                vlc_ipc_data_t *p_data;
+                size_t i_data = sizeof (*p_data);
+
+                for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
+                {
+                    i_data += sizeof (size_t);
+                    i_data += strlen( ppsz_argv[ i_opt ] ) + 1;
+                }
+
+                p_data = malloc( i_data );
+                p_data->argc = *pi_argc - optind;
+                p_data->enqueue = config_GetInt( p_this, "playlist-enqueue" );
+                i_data = 0;
+                for( i_opt = optind; i_opt < *pi_argc; i_opt++ )
+                {
+                    size_t i_len = strlen( ppsz_argv[ i_opt ] ) + 1;
+                    /* Windows will never switch to an architecture
+                     * with stronger alignment requirements, right. */
+                    *((size_t *)(p_data->data + i_data)) = i_len;
+                    i_data += sizeof (size_t);
+                    memcpy( &p_data->data[i_data], ppsz_argv[ i_opt ], i_len );
+                    i_data += i_len;
+                }
+                i_data += sizeof (*p_data);
+
+                /* 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 )
 {
-    p_main_sys->b_fast_pthread = config_GetIntVariable( "fast_pthread" );
+    HWND ipcwindow;
+    MSG message;
+
+    ipcwindow =
+        CreateWindow( L"STATIC",                     /* name of window class */
+                  L"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 */
+
+    SetWindowLongPtr( ipcwindow, GWLP_WNDPROC, (LRESULT)WMCOPYWNDPROC );
+    SetWindowLongPtr( ipcwindow, GWLP_USERDATA, (LONG_PTR)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 *)
+            (uintptr_t)GetWindowLongPtr( hwnd, GWLP_USERDATA );
+
+        if( !p_this ) return 0;
+
+        /* Add files to the playlist */
+        p_playlist = pl_Yield( p_this );
+        if( !p_playlist ) return 0;
+
+        if( pwm_data->lpData )
+        {
+            char **ppsz_argv;
+            vlc_ipc_data_t *p_data = (vlc_ipc_data_t *)pwm_data->lpData;
+            size_t i_data = 0;
+            int i_argc = p_data->argc, i_opt, i_options;
+
+            ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
+            for( i_opt = 0; i_opt < i_argc; i_opt++ )
+            {
+                ppsz_argv[i_opt] = p_data->data + i_data + sizeof(int);
+                i_data += sizeof(int) + *((int *)(p_data->data + i_data));
+            }
+
+            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],
+                  NULL, PLAYLIST_APPEND |
+                        ( ( i_opt || p_data->enqueue ) ? 0 : PLAYLIST_GO ),
+                  PLAYLIST_END, -1,
+                  (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
+                  i_options, true, pl_Unlocked );
+
+                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( void )
+void system_End( libvlc_int_t *p_this )
 {
+    if( p_this && vlc_global() )
+    {
+        free( vlc_global()->psz_vlcpath );
+        vlc_global()->psz_vlcpath = NULL;
+    }
+    vlc_object_t *obj = libvlc_priv (p_this)->ipc_helper;
+    if (obj)
+    {
+        vlc_thread_join (obj);
+        vlc_object_release (obj);
+    }
+
+#if !defined( UNDER_CE )
+    timeEndPeriod(5);
+#endif
+
     WSACleanup();
 }