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_shortname( _("OpenGL" ) );
65 set_description( _("OpenGL video output") );
66 set_capability( "opengl provider", 100 );
67 add_shortcut( "glwin32" );
68 set_callbacks( OpenVideo, CloseVideo );
70 /* FIXME: Hack to avoid unregistering our window class */
71 linked_with_a_crap_library_which_uses_atexit( );
75 /* check if we registered a window class because we need to
78 if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
79 UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
82 /*****************************************************************************
83 * OpenVideo: allocate OpenGL provider
84 *****************************************************************************
85 * This function creates and initializes a video window.
86 *****************************************************************************/
87 static int OpenVideo( vlc_object_t *p_this )
89 vout_thread_t * p_vout = (vout_thread_t *)p_this;
92 /* Allocate structure */
93 p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
94 if( p_vout->p_sys == NULL )
96 msg_Err( p_vout, "out of memory" );
99 memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
101 /* Initialisations */
102 p_vout->pf_init = Init;
103 p_vout->pf_end = End;
104 p_vout->pf_manage = Manage;
105 p_vout->pf_swap = GLSwapBuffers;
107 p_vout->p_sys->p_ddobject = NULL;
108 p_vout->p_sys->p_display = NULL;
109 p_vout->p_sys->p_current_surface = NULL;
110 p_vout->p_sys->p_clipper = NULL;
111 p_vout->p_sys->hwnd = p_vout->p_sys->hvideownd = NULL;
112 p_vout->p_sys->hparent = p_vout->p_sys->hfswnd = NULL;
113 p_vout->p_sys->i_changes = 0;
114 p_vout->p_sys->b_wallpaper = 0;
115 vlc_mutex_init( p_vout, &p_vout->p_sys->lock );
116 SetRectEmpty( &p_vout->p_sys->rect_display );
117 SetRectEmpty( &p_vout->p_sys->rect_parent );
119 var_Create( p_vout, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
121 p_vout->p_sys->b_cursor_hidden = 0;
122 p_vout->p_sys->i_lastmoved = mdate();
124 /* Set main window's size */
125 p_vout->p_sys->i_window_width = p_vout->i_window_width;
126 p_vout->p_sys->i_window_height = p_vout->i_window_height;
128 /* Create the DirectXEventThread, this thread is created by us to isolate
129 * the Win32 PeekMessage function calls. We want to do this because
130 * Windows can stay blocked inside this call for a long time, and when
131 * this happens it thus blocks vlc's video_output thread.
132 * DirectXEventThread will take care of the creation of the video
133 * window (because PeekMessage has to be called from the same thread which
134 * created the window). */
135 msg_Dbg( p_vout, "creating DirectXEventThread" );
136 p_vout->p_sys->p_event =
137 vlc_object_create( p_vout, sizeof(event_thread_t) );
138 p_vout->p_sys->p_event->p_vout = p_vout;
139 if( vlc_thread_create( p_vout->p_sys->p_event, "DirectX Events Thread",
140 E_(DirectXEventThread), 0, 1 ) )
142 msg_Err( p_vout, "cannot create DirectXEventThread" );
143 vlc_object_destroy( p_vout->p_sys->p_event );
144 p_vout->p_sys->p_event = NULL;
148 if( p_vout->p_sys->p_event->b_error )
150 msg_Err( p_vout, "DirectXEventThread failed" );
154 vlc_object_attach( p_vout->p_sys->p_event, p_vout );
156 msg_Dbg( p_vout, "DirectXEventThread running" );
158 /* Variable to indicate if the window should be on top of others */
159 /* Trigger a callback right now */
160 var_Get( p_vout, "video-on-top", &val );
161 var_Set( p_vout, "video-on-top", val );
166 CloseVideo( VLC_OBJECT(p_vout) );
170 /*****************************************************************************
171 * Init: initialize video thread output method
172 *****************************************************************************/
173 static int Init( vout_thread_t *p_vout )
175 PIXELFORMATDESCRIPTOR pfd;
178 /* Change the window title bar text */
179 PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );
181 p_vout->p_sys->hGLDC = GetDC( p_vout->p_sys->hvideownd );
183 /* Set the pixel format for the DC */
184 memset( &pfd, 0, sizeof( pfd ) );
185 pfd.nSize = sizeof( pfd );
187 pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
188 pfd.iPixelType = PFD_TYPE_RGBA;
191 pfd.iLayerType = PFD_MAIN_PLANE;
192 iFormat = ChoosePixelFormat( p_vout->p_sys->hGLDC, &pfd );
193 SetPixelFormat( p_vout->p_sys->hGLDC, iFormat, &pfd );
195 /* Create and enable the render context */
196 p_vout->p_sys->hGLRC = wglCreateContext( p_vout->p_sys->hGLDC );
197 wglMakeCurrent( p_vout->p_sys->hGLDC, p_vout->p_sys->hGLRC );
202 /*****************************************************************************
203 * End: terminate Sys video thread output method
204 *****************************************************************************
205 * Terminate an output method created by Create.
206 * It is called at the end of the thread.
207 *****************************************************************************/
208 static void End( vout_thread_t *p_vout )
210 wglMakeCurrent( NULL, NULL );
211 wglDeleteContext( p_vout->p_sys->hGLRC );
212 ReleaseDC( p_vout->p_sys->hvideownd, p_vout->p_sys->hGLDC );
216 /*****************************************************************************
217 * CloseVideo: destroy Sys video thread output method
218 *****************************************************************************
219 * Terminate an output method created by Create
220 *****************************************************************************/
221 static void CloseVideo( vlc_object_t *p_this )
223 vout_thread_t * p_vout = (vout_thread_t *)p_this;
225 msg_Dbg( p_vout, "CloseVideo" );
227 if( p_vout->p_sys->p_event )
229 vlc_object_detach( p_vout->p_sys->p_event );
231 /* Kill DirectXEventThread */
232 p_vout->p_sys->p_event->b_die = VLC_TRUE;
234 /* we need to be sure DirectXEventThread won't stay stuck in
235 * GetMessage, so we send a fake message */
236 if( p_vout->p_sys->hwnd )
238 PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
241 vlc_thread_join( p_vout->p_sys->p_event );
242 vlc_object_destroy( p_vout->p_sys->p_event );
245 vlc_mutex_destroy( &p_vout->p_sys->lock );
249 free( p_vout->p_sys );
250 p_vout->p_sys = NULL;
254 /*****************************************************************************
255 * Manage: handle Sys events
256 *****************************************************************************
257 * This function should be called regularly by the video output thread.
258 * It returns a non null value if an error occurred.
259 *****************************************************************************/
260 static int Manage( vout_thread_t *p_vout )
262 WINDOWPLACEMENT window_placement;
264 int i_width = p_vout->p_sys->rect_dest.right -
265 p_vout->p_sys->rect_dest.left;
266 int i_height = p_vout->p_sys->rect_dest.bottom -
267 p_vout->p_sys->rect_dest.top;
268 glViewport( 0, 0, i_width, i_height );
270 /* If we do not control our window, we check for geometry changes
271 * ourselves because the parent might not send us its events. */
272 vlc_mutex_lock( &p_vout->p_sys->lock );
273 if( p_vout->p_sys->hparent && !p_vout->b_fullscreen )
278 vlc_mutex_unlock( &p_vout->p_sys->lock );
280 GetClientRect( p_vout->p_sys->hparent, &rect_parent );
281 point.x = point.y = 0;
282 ClientToScreen( p_vout->p_sys->hparent, &point );
283 OffsetRect( &rect_parent, point.x, point.y );
285 if( !EqualRect( &rect_parent, &p_vout->p_sys->rect_parent ) )
287 p_vout->p_sys->rect_parent = rect_parent;
289 /* This one is to force the update even if only
290 * the position has changed */
291 SetWindowPos( p_vout->p_sys->hwnd, 0, 1, 1,
292 rect_parent.right - rect_parent.left,
293 rect_parent.bottom - rect_parent.top, 0 );
295 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
296 rect_parent.right - rect_parent.left,
297 rect_parent.bottom - rect_parent.top, 0 );
302 vlc_mutex_unlock( &p_vout->p_sys->lock );
305 /* We used to call the Win32 PeekMessage function here to read the window
306 * messages. But since window can stay blocked into this function for a
307 * long time (for example when you move your window on the screen), I
308 * decided to isolate PeekMessage in another thread. */
313 if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
314 || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
317 HWND hwnd = (p_vout->p_sys->hparent && p_vout->p_sys->hfswnd) ?
318 p_vout->p_sys->hfswnd : p_vout->p_sys->hwnd;
320 p_vout->b_fullscreen = ! p_vout->b_fullscreen;
322 /* We need to switch between Maximized and Normal sized window */
323 window_placement.length = sizeof(WINDOWPLACEMENT);
324 GetWindowPlacement( hwnd, &window_placement );
325 if( p_vout->b_fullscreen )
327 /* Change window style, no borders and no title bar */
328 int i_style = WS_CLIPCHILDREN | WS_VISIBLE;
329 SetWindowLong( hwnd, GWL_STYLE, i_style );
331 if( p_vout->p_sys->hparent )
333 /* Retrieve current window position so fullscreen will happen
334 * on the right screen */
337 ClientToScreen( p_vout->p_sys->hwnd, &point );
338 GetClientRect( p_vout->p_sys->hwnd, &rect );
339 SetWindowPos( hwnd, 0, point.x, point.y,
340 rect.right, rect.bottom,
341 SWP_NOZORDER|SWP_FRAMECHANGED );
342 GetWindowPlacement( hwnd, &window_placement );
345 /* Maximize window */
346 window_placement.showCmd = SW_SHOWMAXIMIZED;
347 SetWindowPlacement( hwnd, &window_placement );
348 SetWindowPos( hwnd, 0, 0, 0, 0, 0,
349 SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);
351 if( p_vout->p_sys->hparent )
354 GetClientRect( hwnd, &rect );
355 SetParent( p_vout->p_sys->hwnd, hwnd );
356 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
357 rect.right, rect.bottom,
358 SWP_NOZORDER|SWP_FRAMECHANGED );
361 SetForegroundWindow( hwnd );
365 /* Change window style, no borders and no title bar */
366 SetWindowLong( hwnd, GWL_STYLE, p_vout->p_sys->i_window_style );
369 window_placement.showCmd = SW_SHOWNORMAL;
370 SetWindowPlacement( hwnd, &window_placement );
371 SetWindowPos( hwnd, 0, 0, 0, 0, 0,
372 SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);
374 if( p_vout->p_sys->hparent )
377 GetClientRect( p_vout->p_sys->hparent, &rect );
378 SetParent( p_vout->p_sys->hwnd, p_vout->p_sys->hparent );
379 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
380 rect.right, rect.bottom,
381 SWP_NOZORDER|SWP_FRAMECHANGED );
383 ShowWindow( hwnd, SW_HIDE );
384 SetForegroundWindow( p_vout->p_sys->hparent );
387 /* Make sure the mouse cursor is displayed */
388 PostMessage( p_vout->p_sys->hwnd, WM_VLC_SHOW_MOUSE, 0, 0 );
391 /* Update the object variable and trigger callback */
392 val.b_bool = p_vout->b_fullscreen;
393 var_Set( p_vout, "fullscreen", val );
395 p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
396 p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
402 if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
403 (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 )
408 /* Hide the cursor only if it is inside our window */
409 GetCursorPos( &point );
410 hwnd = WindowFromPoint(point);
411 if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )
413 PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
417 p_vout->p_sys->i_lastmoved = mdate();
422 * "Always on top" status change
424 if( p_vout->p_sys->b_on_top_change )
427 HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
429 var_Get( p_vout, "video-on-top", &val );
431 /* Set the window on top if necessary */
432 if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
435 CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
436 MF_BYCOMMAND | MFS_CHECKED );
437 SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
438 SWP_NOSIZE | SWP_NOMOVE );
441 /* The window shouldn't be on top */
442 if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
445 CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
446 MF_BYCOMMAND | MFS_UNCHECKED );
447 SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
448 SWP_NOSIZE | SWP_NOMOVE );
451 p_vout->p_sys->b_on_top_change = VLC_FALSE;
454 /* Check if the event thread is still running */
455 if( p_vout->p_sys->p_event->b_die )
457 return VLC_EGENERIC; /* exit */
463 /*****************************************************************************
464 * GLSwapBuffers: swap front/back buffers
465 *****************************************************************************/
466 static void GLSwapBuffers( vout_thread_t *p_vout )
468 SwapBuffers( p_vout->p_sys->hGLDC );
471 int E_(DirectXUpdateOverlay)( vout_thread_t *p_vout )