1 /*****************************************************************************
2 * glwin32.c: Windows OpenGL provider
3 *****************************************************************************
4 * Copyright (C) 2001-2004 VideoLAN
7 * Authors: Gildas Bazin <gbazin@videolan.org>
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.
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.
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 #include <errno.h> /* ENOMEM */
25 #include <stdlib.h> /* free() */
26 #include <string.h> /* strerror() */
37 #undef GetSystemMetrics
39 #ifndef MONITOR_DEFAULTTONEAREST
40 # define MONITOR_DEFAULTTONEAREST 2
47 /*****************************************************************************
49 *****************************************************************************/
50 static int OpenVideo ( vlc_object_t * );
51 static void CloseVideo ( vlc_object_t * );
53 static int Init ( vout_thread_t * );
54 static void End ( vout_thread_t * );
55 static int Manage ( vout_thread_t * );
56 static void GLSwapBuffers( vout_thread_t * );
58 /*****************************************************************************
60 *****************************************************************************/
62 set_category( CAT_VIDEO );
63 set_subcategory( SUBCAT_VIDEO_VOUT );
64 set_description( _("Win32 OpenGL provider") );
65 set_capability( "opengl provider", 100 );
66 add_shortcut( "glwin32" );
67 set_callbacks( OpenVideo, CloseVideo );
69 /* FIXME: Hack to avoid unregistering our window class */
70 linked_with_a_crap_library_which_uses_atexit( );
74 /* check if we registered a window class because we need to
77 if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
78 UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
81 /*****************************************************************************
82 * OpenVideo: allocate OpenGL provider
83 *****************************************************************************
84 * This function creates and initializes a video window.
85 *****************************************************************************/
86 static int OpenVideo( vlc_object_t *p_this )
88 vout_thread_t * p_vout = (vout_thread_t *)p_this;
91 /* Allocate structure */
92 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
93 if( p_vout->p_sys == NULL )
95 msg_Err( p_vout, "out of memory" );
98 memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
100 /* Initialisations */
101 p_vout->pf_init = Init;
102 p_vout->pf_end = End;
103 p_vout->pf_manage = Manage;
104 p_vout->pf_swap = GLSwapBuffers;
106 p_vout->p_sys->p_ddobject = NULL;
107 p_vout->p_sys->p_display = NULL;
108 p_vout->p_sys->p_current_surface = NULL;
109 p_vout->p_sys->p_clipper = NULL;
110 p_vout->p_sys->hwnd = p_vout->p_sys->hvideownd = NULL;
111 p_vout->p_sys->hparent = p_vout->p_sys->hfswnd = NULL;
112 p_vout->p_sys->i_changes = 0;
113 p_vout->p_sys->b_wallpaper = 0;
114 vlc_mutex_init( p_vout, &p_vout->p_sys->lock );
115 SetRectEmpty( &p_vout->p_sys->rect_display );
116 SetRectEmpty( &p_vout->p_sys->rect_parent );
118 var_Create( p_vout, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
120 p_vout->p_sys->b_cursor_hidden = 0;
121 p_vout->p_sys->i_lastmoved = mdate();
123 /* Set main window's size */
124 p_vout->p_sys->i_window_width = p_vout->i_window_width;
125 p_vout->p_sys->i_window_height = p_vout->i_window_height;
127 /* Create the DirectXEventThread, this thread is created by us to isolate
128 * the Win32 PeekMessage function calls. We want to do this because
129 * Windows can stay blocked inside this call for a long time, and when
130 * this happens it thus blocks vlc's video_output thread.
131 * DirectXEventThread will take care of the creation of the video
132 * window (because PeekMessage has to be called from the same thread which
133 * created the window). */
134 msg_Dbg( p_vout, "creating DirectXEventThread" );
135 p_vout->p_sys->p_event =
136 vlc_object_create( p_vout, sizeof(event_thread_t) );
137 p_vout->p_sys->p_event->p_vout = p_vout;
138 if( vlc_thread_create( p_vout->p_sys->p_event, "DirectX Events Thread",
139 E_(DirectXEventThread), 0, 1 ) )
141 msg_Err( p_vout, "cannot create DirectXEventThread" );
142 vlc_object_destroy( p_vout->p_sys->p_event );
143 p_vout->p_sys->p_event = NULL;
147 if( p_vout->p_sys->p_event->b_error )
149 msg_Err( p_vout, "DirectXEventThread failed" );
153 vlc_object_attach( p_vout->p_sys->p_event, p_vout );
155 msg_Dbg( p_vout, "DirectXEventThread running" );
157 /* Variable to indicate if the window should be on top of others */
158 /* Trigger a callback right now */
159 var_Get( p_vout, "video-on-top", &val );
160 var_Set( p_vout, "video-on-top", val );
165 CloseVideo( VLC_OBJECT(p_vout) );
169 /*****************************************************************************
170 * Init: initialize video thread output method
171 *****************************************************************************/
172 static int Init( vout_thread_t *p_vout )
174 PIXELFORMATDESCRIPTOR pfd;
177 /* Change the window title bar text */
178 PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );
180 p_vout->p_sys->hGLDC = GetDC( p_vout->p_sys->hvideownd );
182 /* Set the pixel format for the DC */
183 memset( &pfd, 0, sizeof( pfd ) );
184 pfd.nSize = sizeof( pfd );
186 pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
187 pfd.iPixelType = PFD_TYPE_RGBA;
190 pfd.iLayerType = PFD_MAIN_PLANE;
191 iFormat = ChoosePixelFormat( p_vout->p_sys->hGLDC, &pfd );
192 SetPixelFormat( p_vout->p_sys->hGLDC, iFormat, &pfd );
194 /* Create and enable the render context */
195 p_vout->p_sys->hGLRC = wglCreateContext( p_vout->p_sys->hGLDC );
196 wglMakeCurrent( p_vout->p_sys->hGLDC, p_vout->p_sys->hGLRC );
201 /*****************************************************************************
202 * End: terminate Sys video thread output method
203 *****************************************************************************
204 * Terminate an output method created by Create.
205 * It is called at the end of the thread.
206 *****************************************************************************/
207 static void End( vout_thread_t *p_vout )
209 wglMakeCurrent( NULL, NULL );
210 wglDeleteContext( p_vout->p_sys->hGLRC );
211 ReleaseDC( p_vout->p_sys->hvideownd, p_vout->p_sys->hGLDC );
215 /*****************************************************************************
216 * CloseVideo: destroy Sys video thread output method
217 *****************************************************************************
218 * Terminate an output method created by Create
219 *****************************************************************************/
220 static void CloseVideo( vlc_object_t *p_this )
222 vout_thread_t * p_vout = (vout_thread_t *)p_this;
224 msg_Dbg( p_vout, "CloseVideo" );
226 if( p_vout->p_sys->p_event )
228 vlc_object_detach( p_vout->p_sys->p_event );
230 /* Kill DirectXEventThread */
231 p_vout->p_sys->p_event->b_die = VLC_TRUE;
233 /* we need to be sure DirectXEventThread won't stay stuck in
234 * GetMessage, so we send a fake message */
235 if( p_vout->p_sys->hwnd )
237 PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
240 vlc_thread_join( p_vout->p_sys->p_event );
241 vlc_object_destroy( p_vout->p_sys->p_event );
244 vlc_mutex_destroy( &p_vout->p_sys->lock );
248 free( p_vout->p_sys );
249 p_vout->p_sys = NULL;
253 /*****************************************************************************
254 * Manage: handle Sys events
255 *****************************************************************************
256 * This function should be called regularly by the video output thread.
257 * It returns a non null value if an error occurred.
258 *****************************************************************************/
259 static int Manage( vout_thread_t *p_vout )
261 WINDOWPLACEMENT window_placement;
263 int i_width = p_vout->p_sys->rect_dest.right -
264 p_vout->p_sys->rect_dest.left;
265 int i_height = p_vout->p_sys->rect_dest.bottom -
266 p_vout->p_sys->rect_dest.top;
267 glViewport( 0, 0, i_width, i_height );
269 /* If we do not control our window, we check for geometry changes
270 * ourselves because the parent might not send us its events. */
271 vlc_mutex_lock( &p_vout->p_sys->lock );
272 if( p_vout->p_sys->hparent && !p_vout->b_fullscreen )
277 vlc_mutex_unlock( &p_vout->p_sys->lock );
279 GetClientRect( p_vout->p_sys->hparent, &rect_parent );
280 point.x = point.y = 0;
281 ClientToScreen( p_vout->p_sys->hparent, &point );
282 OffsetRect( &rect_parent, point.x, point.y );
284 if( !EqualRect( &rect_parent, &p_vout->p_sys->rect_parent ) )
286 p_vout->p_sys->rect_parent = rect_parent;
288 /* This one is to force the update even if only
289 * the position has changed */
290 SetWindowPos( p_vout->p_sys->hwnd, 0, 1, 1,
291 rect_parent.right - rect_parent.left,
292 rect_parent.bottom - rect_parent.top, 0 );
294 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
295 rect_parent.right - rect_parent.left,
296 rect_parent.bottom - rect_parent.top, 0 );
301 vlc_mutex_unlock( &p_vout->p_sys->lock );
304 /* We used to call the Win32 PeekMessage function here to read the window
305 * messages. But since window can stay blocked into this function for a
306 * long time (for example when you move your window on the screen), I
307 * decided to isolate PeekMessage in another thread. */
312 if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
313 || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
316 HWND hwnd = (p_vout->p_sys->hparent && p_vout->p_sys->hfswnd) ?
317 p_vout->p_sys->hfswnd : p_vout->p_sys->hwnd;
319 p_vout->b_fullscreen = ! p_vout->b_fullscreen;
321 /* We need to switch between Maximized and Normal sized window */
322 window_placement.length = sizeof(WINDOWPLACEMENT);
323 GetWindowPlacement( hwnd, &window_placement );
324 if( p_vout->b_fullscreen )
326 /* Change window style, no borders and no title bar */
327 int i_style = WS_CLIPCHILDREN | WS_VISIBLE;
328 SetWindowLong( hwnd, GWL_STYLE, i_style );
330 if( p_vout->p_sys->hparent )
332 /* Retrieve current window position so fullscreen will happen
333 * on the right screen */
336 ClientToScreen( p_vout->p_sys->hwnd, &point );
337 GetClientRect( p_vout->p_sys->hwnd, &rect );
338 SetWindowPos( hwnd, 0, point.x, point.y,
339 rect.right, rect.bottom,
340 SWP_NOZORDER|SWP_FRAMECHANGED );
341 GetWindowPlacement( hwnd, &window_placement );
344 /* Maximize window */
345 window_placement.showCmd = SW_SHOWMAXIMIZED;
346 SetWindowPlacement( hwnd, &window_placement );
347 SetWindowPos( hwnd, 0, 0, 0, 0, 0,
348 SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);
350 if( p_vout->p_sys->hparent )
353 GetClientRect( hwnd, &rect );
354 SetParent( p_vout->p_sys->hwnd, hwnd );
355 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
356 rect.right, rect.bottom,
357 SWP_NOZORDER|SWP_FRAMECHANGED );
360 SetForegroundWindow( hwnd );
364 /* Change window style, no borders and no title bar */
365 SetWindowLong( hwnd, GWL_STYLE, p_vout->p_sys->i_window_style );
368 window_placement.showCmd = SW_SHOWNORMAL;
369 SetWindowPlacement( hwnd, &window_placement );
370 SetWindowPos( hwnd, 0, 0, 0, 0, 0,
371 SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);
373 if( p_vout->p_sys->hparent )
376 GetClientRect( p_vout->p_sys->hparent, &rect );
377 SetParent( p_vout->p_sys->hwnd, p_vout->p_sys->hparent );
378 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
379 rect.right, rect.bottom,
380 SWP_NOZORDER|SWP_FRAMECHANGED );
382 ShowWindow( hwnd, SW_HIDE );
383 SetForegroundWindow( p_vout->p_sys->hparent );
386 /* Make sure the mouse cursor is displayed */
387 PostMessage( p_vout->p_sys->hwnd, WM_VLC_SHOW_MOUSE, 0, 0 );
390 /* Update the object variable and trigger callback */
391 val.b_bool = p_vout->b_fullscreen;
392 var_Set( p_vout, "fullscreen", val );
394 p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
395 p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
401 if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
402 (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 )
407 /* Hide the cursor only if it is inside our window */
408 GetCursorPos( &point );
409 hwnd = WindowFromPoint(point);
410 if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )
412 PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
416 p_vout->p_sys->i_lastmoved = mdate();
421 * "Always on top" status change
423 if( p_vout->p_sys->b_on_top_change )
426 HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
428 var_Get( p_vout, "video-on-top", &val );
430 /* Set the window on top if necessary */
431 if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
434 CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
435 MF_BYCOMMAND | MFS_CHECKED );
436 SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
437 SWP_NOSIZE | SWP_NOMOVE );
440 /* The window shouldn't be on top */
441 if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
444 CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
445 MF_BYCOMMAND | MFS_UNCHECKED );
446 SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
447 SWP_NOSIZE | SWP_NOMOVE );
450 p_vout->p_sys->b_on_top_change = VLC_FALSE;
453 /* Check if the event thread is still running */
454 if( p_vout->p_sys->p_event->b_die )
456 return VLC_EGENERIC; /* exit */
462 /*****************************************************************************
463 * GLSwapBuffers: swap front/back buffers
464 *****************************************************************************/
465 static void GLSwapBuffers( vout_thread_t *p_vout )
467 SwapBuffers( p_vout->p_sys->hGLDC );
470 int E_(DirectXUpdateOverlay)( vout_thread_t *p_vout )