1 /*****************************************************************************
2 * glwin32.c: Windows OpenGL provider
3 *****************************************************************************
4 * Copyright (C) 2001-2009 the VideoLAN team
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 #include <errno.h> /* ENOMEM */
30 #include <vlc_common.h>
31 #include <vlc_plugin.h>
32 #include <vlc_interface.h>
40 #undef GetSystemMetrics
42 #ifndef MONITOR_DEFAULTTONEAREST
43 # define MONITOR_DEFAULTTONEAREST 2
50 /*****************************************************************************
52 *****************************************************************************/
53 static int OpenVideo ( vlc_object_t * );
54 static void CloseVideo ( vlc_object_t * );
56 static int Init ( vout_thread_t * );
57 static void End ( vout_thread_t * );
58 static int Manage ( vout_thread_t * );
59 static void GLSwapBuffers( vout_thread_t * );
60 static void FirstSwap( vout_thread_t * );
62 /*****************************************************************************
64 *****************************************************************************/
66 set_category( CAT_VIDEO )
67 set_subcategory( SUBCAT_VIDEO_VOUT )
68 set_shortname( "OpenGL" )
69 set_description( N_("OpenGL video output") )
70 set_capability( "opengl provider", 100 )
71 add_shortcut( "glwin32" )
72 set_callbacks( OpenVideo, CloseVideo )
74 /* FIXME: Hack to avoid unregistering our window class */
75 linked_with_a_crap_library_which_uses_atexit ()
79 /* check if we registered a window class because we need to
82 if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
83 UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
86 /*****************************************************************************
87 * OpenVideo: allocate OpenGL provider
88 *****************************************************************************
89 * This function creates and initializes a video window.
90 *****************************************************************************/
91 static int OpenVideo( vlc_object_t *p_this )
93 vout_thread_t * p_vout = (vout_thread_t *)p_this;
95 /* Allocate structure */
96 p_vout->p_sys = calloc( 1, sizeof( vout_sys_t ) );
97 if( p_vout->p_sys == NULL )
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 = FirstSwap;
106 p_vout->p_sys->hwnd = p_vout->p_sys->hvideownd = NULL;
107 p_vout->p_sys->hparent = p_vout->p_sys->hfswnd = NULL;
108 p_vout->p_sys->i_changes = 0;
109 vlc_mutex_init( &p_vout->p_sys->lock );
110 SetRectEmpty( &p_vout->p_sys->rect_display );
111 SetRectEmpty( &p_vout->p_sys->rect_parent );
113 var_Create( p_vout, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
115 p_vout->p_sys->b_cursor_hidden = 0;
116 p_vout->p_sys->i_lastmoved = mdate();
117 p_vout->p_sys->i_mouse_hide_timeout =
118 var_GetInteger(p_vout, "mouse-hide-timeout") * 1000;
120 /* Set main window's size */
121 p_vout->p_sys->i_window_width = p_vout->i_window_width;
122 p_vout->p_sys->i_window_height = p_vout->i_window_height;
124 /* Create the Vout EventThread, this thread is created by us to isolate
125 * the Win32 PeekMessage function calls. We want to do this because
126 * Windows can stay blocked inside this call for a long time, and when
127 * this happens it thus blocks vlc's video_output thread.
128 * Vout EventThread will take care of the creation of the video
129 * window (because PeekMessage has to be called from the same thread which
130 * created the window). */
131 msg_Dbg( p_vout, "creating Vout EventThread" );
132 p_vout->p_sys->p_event =
133 vlc_object_create( p_vout, sizeof(event_thread_t) );
134 p_vout->p_sys->p_event->p_vout = p_vout;
135 p_vout->p_sys->p_event->window_ready = CreateEvent( NULL, TRUE, FALSE, NULL );
136 if( vlc_thread_create( p_vout->p_sys->p_event, "Vout Events Thread",
139 msg_Err( p_vout, "cannot create Vout EventThread" );
140 CloseHandle( p_vout->p_sys->p_event->window_ready );
141 vlc_object_release( p_vout->p_sys->p_event );
142 p_vout->p_sys->p_event = NULL;
145 WaitForSingleObject( p_vout->p_sys->p_event->window_ready, INFINITE );
146 CloseHandle( p_vout->p_sys->p_event->window_ready );
148 if( p_vout->p_sys->p_event->b_error )
150 msg_Err( p_vout, "Vout EventThread failed" );
154 vlc_object_attach( p_vout->p_sys->p_event, p_vout );
156 msg_Dbg( p_vout, "Vout EventThread running" );
158 /* Variable to indicate if the window should be on top of others */
159 /* Trigger a callback right now */
160 var_TriggerCallback( p_vout, "video-on-top" );
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 if( p_vout->b_fullscreen )
226 msg_Dbg( p_vout, "Quitting fullscreen" );
227 Win32ToggleFullscreen( p_vout );
228 /* Force fullscreen in the core for the next video */
229 var_SetBool( p_vout, "fullscreen", true );
232 if( p_vout->p_sys->p_event )
234 vlc_object_detach( p_vout->p_sys->p_event );
236 /* Kill Vout EventThread */
237 vlc_object_kill( p_vout->p_sys->p_event );
239 /* we need to be sure Vout EventThread won't stay stuck in
240 * GetMessage, so we send a fake message */
241 if( p_vout->p_sys->hwnd )
243 PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
246 vlc_thread_join( p_vout->p_sys->p_event );
247 vlc_object_release( p_vout->p_sys->p_event );
250 vlc_mutex_destroy( &p_vout->p_sys->lock );
252 free( p_vout->p_sys );
253 p_vout->p_sys = NULL;
256 /*****************************************************************************
257 * Manage: handle Sys events
258 *****************************************************************************
259 * This function should be called regularly by the video output thread.
260 * It returns a non null value if an error occurred.
261 *****************************************************************************/
262 static int Manage( vout_thread_t *p_vout )
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 /* autoscale toggle */
306 if( p_vout->i_changes & VOUT_SCALE_CHANGE )
308 p_vout->i_changes &= ~VOUT_SCALE_CHANGE;
310 p_vout->b_autoscale = var_GetBool( p_vout, "autoscale" );
311 p_vout->i_zoom = (int) ZOOM_FP_FACTOR;
313 UpdateRects( p_vout, true );
317 if( p_vout->i_changes & VOUT_ZOOM_CHANGE )
319 p_vout->i_changes &= ~VOUT_ZOOM_CHANGE;
321 p_vout->b_autoscale = false;
323 (int)( ZOOM_FP_FACTOR * var_GetFloat( p_vout, "scale" ) );
324 UpdateRects( p_vout, true );
327 /* Check for cropping / aspect changes */
328 if( p_vout->i_changes & VOUT_CROP_CHANGE ||
329 p_vout->i_changes & VOUT_ASPECT_CHANGE )
331 p_vout->i_changes &= ~VOUT_CROP_CHANGE;
332 p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;
334 p_vout->fmt_out.i_x_offset = p_vout->fmt_in.i_x_offset;
335 p_vout->fmt_out.i_y_offset = p_vout->fmt_in.i_y_offset;
336 p_vout->fmt_out.i_visible_width = p_vout->fmt_in.i_visible_width;
337 p_vout->fmt_out.i_visible_height = p_vout->fmt_in.i_visible_height;
338 p_vout->fmt_out.i_aspect = p_vout->fmt_in.i_aspect;
339 p_vout->fmt_out.i_sar_num = p_vout->fmt_in.i_sar_num;
340 p_vout->fmt_out.i_sar_den = p_vout->fmt_in.i_sar_den;
341 p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
342 UpdateRects( p_vout, true );
345 /* We used to call the Win32 PeekMessage function here to read the window
346 * messages. But since window can stay blocked into this function for a
347 * long time (for example when you move your window on the screen), I
348 * decided to isolate PeekMessage in another thread. */
353 if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
354 || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
356 Win32ToggleFullscreen( p_vout );
358 p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
359 p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
365 if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
366 (mdate() - p_vout->p_sys->i_lastmoved) >
367 p_vout->p_sys->i_mouse_hide_timeout )
372 /* Hide the cursor only if it is inside our window */
373 GetCursorPos( &point );
374 hwnd = WindowFromPoint(point);
375 if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )
377 PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
381 p_vout->p_sys->i_lastmoved = mdate();
386 * "Always on top" status change
388 if( p_vout->p_sys->b_on_top_change )
391 HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
393 var_Get( p_vout, "video-on-top", &val );
395 /* Set the window on top if necessary */
396 if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
399 CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
400 MF_BYCOMMAND | MFS_CHECKED );
401 SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
402 SWP_NOSIZE | SWP_NOMOVE );
405 /* The window shouldn't be on top */
406 if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
409 CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
410 MF_BYCOMMAND | MFS_UNCHECKED );
411 SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
412 SWP_NOSIZE | SWP_NOMOVE );
415 p_vout->p_sys->b_on_top_change = false;
418 /* Check if the event thread is still running */
419 if( !vlc_object_alive (p_vout->p_sys->p_event) )
421 return VLC_EGENERIC; /* exit */
427 /*****************************************************************************
428 * GLSwapBuffers: swap front/back buffers
429 *****************************************************************************/
430 static void GLSwapBuffers( vout_thread_t *p_vout )
432 SwapBuffers( p_vout->p_sys->hGLDC );
436 ** this function is only used once when the first picture is received
437 ** this function will show the video window once a picture is ready
440 static void FirstSwap( vout_thread_t *p_vout )
442 /* get initial picture buffer swapped to front buffer */
443 GLSwapBuffers( p_vout );
446 ** Video window is initially hidden, show it now since we got a
449 SetWindowPos( p_vout->p_sys->hvideownd, NULL, 0, 0, 0, 0,
457 /* use and restores proper swap function for further pictures */
458 p_vout->pf_swap = GLSwapBuffers;