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 if ( CreateEventThread( p_vout ) )
126 /* Variable to indicate if the window should be on top of others */
127 /* Trigger a callback right now */
128 var_TriggerCallback( p_vout, "video-on-top" );
134 CloseVideo( VLC_OBJECT(p_vout) );
139 /*****************************************************************************
140 * Init: initialize video thread output method
141 *****************************************************************************/
142 static int Init( vout_thread_t *p_vout )
144 PIXELFORMATDESCRIPTOR pfd;
147 /* Change the window title bar text */
148 PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );
150 p_vout->p_sys->hGLDC = GetDC( p_vout->p_sys->hvideownd );
152 /* Set the pixel format for the DC */
153 memset( &pfd, 0, sizeof( pfd ) );
154 pfd.nSize = sizeof( pfd );
156 pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
157 pfd.iPixelType = PFD_TYPE_RGBA;
160 pfd.iLayerType = PFD_MAIN_PLANE;
161 iFormat = ChoosePixelFormat( p_vout->p_sys->hGLDC, &pfd );
162 SetPixelFormat( p_vout->p_sys->hGLDC, iFormat, &pfd );
164 /* Create and enable the render context */
165 p_vout->p_sys->hGLRC = wglCreateContext( p_vout->p_sys->hGLDC );
166 wglMakeCurrent( p_vout->p_sys->hGLDC, p_vout->p_sys->hGLRC );
171 /*****************************************************************************
172 * End: terminate Sys video thread output method
173 *****************************************************************************
174 * Terminate an output method created by Create.
175 * It is called at the end of the thread.
176 *****************************************************************************/
177 static void End( vout_thread_t *p_vout )
179 wglMakeCurrent( NULL, NULL );
180 wglDeleteContext( p_vout->p_sys->hGLRC );
181 ReleaseDC( p_vout->p_sys->hvideownd, p_vout->p_sys->hGLDC );
185 /*****************************************************************************
186 * CloseVideo: destroy Sys video thread output method
187 *****************************************************************************
188 * Terminate an output method created by Create
189 *****************************************************************************/
190 static void CloseVideo( vlc_object_t *p_this )
192 vout_thread_t * p_vout = (vout_thread_t *)p_this;
194 StopEventThread( p_vout );
196 free( p_vout->p_sys );
197 p_vout->p_sys = NULL;
200 /*****************************************************************************
201 * Manage: handle Sys events
202 *****************************************************************************
203 * This function should be called regularly by the video output thread.
204 * It returns a non null value if an error occurred.
205 *****************************************************************************/
206 static int Manage( vout_thread_t *p_vout )
208 int i_width = p_vout->p_sys->rect_dest.right -
209 p_vout->p_sys->rect_dest.left;
210 int i_height = p_vout->p_sys->rect_dest.bottom -
211 p_vout->p_sys->rect_dest.top;
212 glViewport( 0, 0, i_width, i_height );
214 /* If we do not control our window, we check for geometry changes
215 * ourselves because the parent might not send us its events. */
216 vlc_mutex_lock( &p_vout->p_sys->lock );
217 if( p_vout->p_sys->hparent && !p_vout->b_fullscreen )
222 vlc_mutex_unlock( &p_vout->p_sys->lock );
224 GetClientRect( p_vout->p_sys->hparent, &rect_parent );
225 point.x = point.y = 0;
226 ClientToScreen( p_vout->p_sys->hparent, &point );
227 OffsetRect( &rect_parent, point.x, point.y );
229 if( !EqualRect( &rect_parent, &p_vout->p_sys->rect_parent ) )
231 p_vout->p_sys->rect_parent = rect_parent;
233 /* This one is to force the update even if only
234 * the position has changed */
235 SetWindowPos( p_vout->p_sys->hwnd, 0, 1, 1,
236 rect_parent.right - rect_parent.left,
237 rect_parent.bottom - rect_parent.top, 0 );
239 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
240 rect_parent.right - rect_parent.left,
241 rect_parent.bottom - rect_parent.top, 0 );
246 vlc_mutex_unlock( &p_vout->p_sys->lock );
249 /* autoscale toggle */
250 if( p_vout->i_changes & VOUT_SCALE_CHANGE )
252 p_vout->i_changes &= ~VOUT_SCALE_CHANGE;
254 p_vout->b_autoscale = var_GetBool( p_vout, "autoscale" );
255 p_vout->i_zoom = (int) ZOOM_FP_FACTOR;
257 UpdateRects( p_vout, true );
261 if( p_vout->i_changes & VOUT_ZOOM_CHANGE )
263 p_vout->i_changes &= ~VOUT_ZOOM_CHANGE;
265 p_vout->b_autoscale = false;
267 (int)( ZOOM_FP_FACTOR * var_GetFloat( p_vout, "scale" ) );
268 UpdateRects( p_vout, true );
271 /* Check for cropping / aspect changes */
272 if( p_vout->i_changes & VOUT_CROP_CHANGE ||
273 p_vout->i_changes & VOUT_ASPECT_CHANGE )
275 p_vout->i_changes &= ~VOUT_CROP_CHANGE;
276 p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;
278 p_vout->fmt_out.i_x_offset = p_vout->fmt_in.i_x_offset;
279 p_vout->fmt_out.i_y_offset = p_vout->fmt_in.i_y_offset;
280 p_vout->fmt_out.i_visible_width = p_vout->fmt_in.i_visible_width;
281 p_vout->fmt_out.i_visible_height = p_vout->fmt_in.i_visible_height;
282 p_vout->fmt_out.i_aspect = p_vout->fmt_in.i_aspect;
283 p_vout->fmt_out.i_sar_num = p_vout->fmt_in.i_sar_num;
284 p_vout->fmt_out.i_sar_den = p_vout->fmt_in.i_sar_den;
285 p_vout->output.i_aspect = p_vout->fmt_in.i_aspect;
286 UpdateRects( p_vout, true );
289 /* We used to call the Win32 PeekMessage function here to read the window
290 * messages. But since window can stay blocked into this function for a
291 * long time (for example when you move your window on the screen), I
292 * decided to isolate PeekMessage in another thread. */
297 if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
298 || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
300 Win32ToggleFullscreen( p_vout );
302 p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
303 p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
309 if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
310 (mdate() - p_vout->p_sys->i_lastmoved) >
311 p_vout->p_sys->i_mouse_hide_timeout )
316 /* Hide the cursor only if it is inside our window */
317 GetCursorPos( &point );
318 hwnd = WindowFromPoint(point);
319 if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )
321 PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
325 p_vout->p_sys->i_lastmoved = mdate();
330 * "Always on top" status change
332 if( p_vout->p_sys->b_on_top_change )
335 HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
337 var_Get( p_vout, "video-on-top", &val );
339 /* Set the window on top if necessary */
340 if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
343 CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
344 MF_BYCOMMAND | MFS_CHECKED );
345 SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
346 SWP_NOSIZE | SWP_NOMOVE );
349 /* The window shouldn't be on top */
350 if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
353 CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
354 MF_BYCOMMAND | MFS_UNCHECKED );
355 SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
356 SWP_NOSIZE | SWP_NOMOVE );
359 p_vout->p_sys->b_on_top_change = false;
362 /* Check if the event thread is still running */
363 if( !vlc_object_alive (p_vout->p_sys->p_event) )
365 return VLC_EGENERIC; /* exit */
371 /*****************************************************************************
372 * GLSwapBuffers: swap front/back buffers
373 *****************************************************************************/
374 static void GLSwapBuffers( vout_thread_t *p_vout )
376 SwapBuffers( p_vout->p_sys->hGLDC );
380 ** this function is only used once when the first picture is received
381 ** this function will show the video window once a picture is ready
384 static void FirstSwap( vout_thread_t *p_vout )
386 /* get initial picture buffer swapped to front buffer */
387 GLSwapBuffers( p_vout );
390 ** Video window is initially hidden, show it now since we got a
393 SetWindowPos( p_vout->p_sys->hvideownd, NULL, 0, 0, 0, 0,
401 /* use and restores proper swap function for further pictures */
402 p_vout->pf_swap = GLSwapBuffers;