git.sesse.net Git - vlc/blob - modules/control/win_msg.c

   1 /*****************************************************************************
   2  * ntservice.c: Windows NT/2K/XP service interface
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004, 2010 VLC authors and VideoLAN
   5  *
   6  * Authors: Samuel Hocevar <sam@zoy.org>
   7  *          Gildas Bazin <gbazin@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <vlc_common.h>
  29 #include <vlc_plugin.h>
  30 #include <vlc_interface.h>
  31 #include <vlc_playlist.h>
  32 #include <vlc_input.h>
  33 #include <vlc_url.h> // FIXME: move URL generation to calling process
  34
  35 #include <windows.h>
  36
  37 struct intf_sys_t
  38 {
  39     HWND window;
  40     HANDLE ready;
  41     vlc_thread_t thread;
  42 };
  43
  44 /* Must be same as in src/win32/specific.c */
  45 typedef struct
  46 {
  47     int argc;
  48     int enqueue;
  49     char data[];
  50 } vlc_ipc_data_t;
  51
  52 static LRESULT CALLBACK WMCOPYWNDPROC(HWND hwnd, UINT uMsg,
  53                                       WPARAM wParam, LPARAM lParam)
  54 {
  55     if( uMsg == WM_QUIT  )
  56     {
  57         PostQuitMessage( 0 );
  58     }
  59     else if( uMsg == WM_COPYDATA )
  60     {
  61         COPYDATASTRUCT *pwm_data = (COPYDATASTRUCT*)lParam;
  62
  63         intf_thread_t *intf = (intf_thread_t *)(uintptr_t)
  64             GetWindowLongPtr( hwnd, GWLP_USERDATA );
  65         if( intf == NULL )
  66             return 0; /* XXX: is this even possible? */
  67
  68         /* Add files to the playlist */
  69         if( pwm_data->lpData )
  70         {
  71             char **ppsz_argv;
  72             vlc_ipc_data_t *p_data = (vlc_ipc_data_t *)pwm_data->lpData;
  73             size_t i_data = 0;
  74             int i_argc = p_data->argc, i_opt, i_options;
  75
  76             ppsz_argv = (char **)malloc( i_argc * sizeof(char *) );
  77             for( i_opt = 0; i_opt < i_argc; i_opt++ )
  78             {
  79                 ppsz_argv[i_opt] = p_data->data + i_data + sizeof(size_t);
  80                 i_data += sizeof(size_t) + *((size_t *)(p_data->data + i_data));
  81             }
  82
  83             for( i_opt = 0; i_opt < i_argc; i_opt++ )
  84             {
  85                 i_options = 0;
  86
  87                 /* Count the input options */
  88                 while( i_opt + i_options + 1 < i_argc &&
  89                         *ppsz_argv[ i_opt + i_options + 1 ] == ':' )
  90                 {
  91                     i_options++;
  92                 }
  93
  94 #warning URI conversion must be done in calling process instead!
  95                 /* FIXME: This breaks relative paths if calling vlc.exe is
  96                  * started from a different working directory. */
  97                 char *psz_URI = NULL;
  98                 if( strstr( ppsz_argv[i_opt], "://" ) == NULL )
  99                     psz_URI = vlc_path2uri( ppsz_argv[i_opt], NULL );
 100                 playlist_AddExt( pl_Get(intf),
 101                         (psz_URI != NULL) ? psz_URI : ppsz_argv[i_opt],
 102                         NULL, PLAYLIST_APPEND |
 103                         ( ( i_opt || p_data->enqueue ) ? 0 : PLAYLIST_GO ),
 104                         PLAYLIST_END, -1,
 105                         i_options,
 106                         (char const **)( i_options ? &ppsz_argv[i_opt+1] : NULL ),
 107                         VLC_INPUT_OPTION_TRUSTED,
 108                         true, pl_Unlocked );
 109
 110                 i_opt += i_options;
 111                 free( psz_URI );
 112             }
 113
 114             free( ppsz_argv );
 115         }
 116     }
 117
 118     return DefWindowProc( hwnd, uMsg, wParam, lParam );
 119 }
 120
 121 static void *HelperThread(void *data)
 122 {
 123     intf_thread_t *intf = data;
 124     intf_sys_t *sys = intf->p_sys;
 125
 126     HWND ipcwindow =
 127         CreateWindow(L"STATIC",                      /* name of window class */
 128                   L"VLC ipc " TEXT(VERSION),        /* window title bar text */
 129                   0,                                         /* window style */
 130                   0,                                 /* default X coordinate */
 131                   0,                                 /* default Y coordinate */
 132                   0,                                         /* window width */
 133                   0,                                        /* window height */
 134                   NULL,                                  /* no parent window */
 135                   NULL,                            /* no menu in this window */
 136                   GetModuleHandle(NULL),  /* handle of this program instance */
 137                   NULL) ;                               /* sent to WM_CREATE */
 138
 139     SetWindowLongPtr(ipcwindow, GWLP_WNDPROC, (LRESULT)WMCOPYWNDPROC);
 140     SetWindowLongPtr(ipcwindow, GWLP_USERDATA, (uintptr_t)data);
 141
 142     sys->window = ipcwindow;
 143     /* Signal the creation of the thread and events queue */
 144     SetEvent(sys->ready);
 145
 146     MSG message;
 147     while (GetMessage(&message, NULL, 0, 0))
 148     {
 149         TranslateMessage(&message);
 150         DispatchMessage(&message);
 151     }
 152
 153     return NULL;
 154 }
 155
 156 static int Open(vlc_object_t *obj)
 157 {
 158     intf_thread_t *intf = (intf_thread_t *)obj;
 159     intf_sys_t *sys = malloc(sizeof (*sys));
 160     if (unlikely(sys == NULL))
 161         return VLC_ENOMEM;
 162
 163     intf->p_sys = sys;
 164
 165     /* Run the helper thread */
 166     sys->ready = CreateEvent(NULL, FALSE, FALSE, NULL);
 167
 168     if (vlc_clone(&sys->thread, HelperThread, intf, VLC_THREAD_PRIORITY_LOW))
 169     {
 170         free(sys);
 171         msg_Err(intf, "one instance mode DISABLED "
 172                  "(IPC helper thread couldn't be created)");
 173         return VLC_ENOMEM;
 174     }
 175
 176     WaitForSingleObject(sys->ready, INFINITE);
 177     CloseHandle(sys->ready);
 178
 179     return VLC_SUCCESS;
 180 }
 181
 182 static void Close(vlc_object_t *obj)
 183 {
 184     intf_thread_t *intf = (intf_thread_t *)obj;
 185     intf_sys_t *sys = intf->p_sys;
 186
 187     SendMessage(sys->window, WM_QUIT, 0, 0);
 188     vlc_join(sys->thread, NULL);
 189     free(sys);
 190 }
 191
 192 vlc_module_begin()
 193     set_shortname(N_("WinMsg"))
 194     set_description(N_("Windows messages interface"))
 195     set_category(CAT_INTERFACE)
 196     set_subcategory(SUBCAT_INTERFACE_CONTROL)
 197     set_capability("interface", 0)
 198     set_callbacks(Open, Close)
 199 vlc_module_end()