git.sesse.net Git - vlc/blob - modules/video_output/directx/glwin32.c

   1 /*****************************************************************************
   2  * glwin32.c: Windows OpenGL provider
   3  *****************************************************************************
   4  * Copyright (C) 2001-2004 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 #include <errno.h>                                                 /* ENOMEM */
  25 #include <stdlib.h>                                                /* free() */
  26 #include <string.h>                                            /* strerror() */
  27
  28 #include <vlc/vlc.h>
  29 #include <vlc/intf.h>
  30 #include <vlc/vout.h>
  31
  32 #include <windows.h>
  33 #include <ddraw.h>
  34 #include <commctrl.h>
  35
  36 #include <multimon.h>
  37 #undef GetSystemMetrics
  38
  39 #ifndef MONITOR_DEFAULTTONEAREST
  40 #   define MONITOR_DEFAULTTONEAREST 2
  41 #endif
  42
  43 #include <GL/gl.h>
  44
  45 #include "vout.h"
  46
  47 /*****************************************************************************
  48  * Local prototypes.
  49  *****************************************************************************/
  50 static int  OpenVideo  ( vlc_object_t * );
  51 static void CloseVideo ( vlc_object_t * );
  52
  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 * );
  57
  58 /*****************************************************************************
  59  * Module descriptor
  60  *****************************************************************************/
  61 vlc_module_begin();
  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 );
  68
  69     /* FIXME: Hack to avoid unregistering our window class */
  70     linked_with_a_crap_library_which_uses_atexit( );
  71 vlc_module_end();
  72
  73 #if 0 /* FIXME */
  74     /* check if we registered a window class because we need to
  75      * unregister it */
  76     WNDCLASS wndclass;
  77     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
  78         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
  79 #endif
  80
  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 )
  87 {
  88     vout_thread_t * p_vout = (vout_thread_t *)p_this;
  89     vlc_value_t val;
  90
  91     /* Allocate structure */
  92     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
  93     if( p_vout->p_sys == NULL )
  94     {
  95         msg_Err( p_vout, "out of memory" );
  96         return VLC_ENOMEM;
  97     }
  98     memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
  99
 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;
 105
 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 );
 117
 118     var_Create( p_vout, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 119
 120     p_vout->p_sys->b_cursor_hidden = 0;
 121     p_vout->p_sys->i_lastmoved = mdate();
 122
 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;
 126
 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 ) )
 140     {
 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;
 144         goto error;
 145     }
 146
 147     if( p_vout->p_sys->p_event->b_error )
 148     {
 149         msg_Err( p_vout, "DirectXEventThread failed" );
 150         goto error;
 151     }
 152
 153     vlc_object_attach( p_vout->p_sys->p_event, p_vout );
 154
 155     msg_Dbg( p_vout, "DirectXEventThread running" );
 156
 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 );
 161
 162     return VLC_SUCCESS;
 163
 164  error:
 165     CloseVideo( VLC_OBJECT(p_vout) );
 166     return VLC_EGENERIC;
 167 }
 168
 169 /*****************************************************************************
 170  * Init: initialize video thread output method
 171  *****************************************************************************/
 172 static int Init( vout_thread_t *p_vout )
 173 {
 174     PIXELFORMATDESCRIPTOR pfd;
 175     int iFormat;
 176
 177     /* Change the window title bar text */
 178     PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );
 179
 180     p_vout->p_sys->hGLDC = GetDC( p_vout->p_sys->hvideownd );
 181
 182     /* Set the pixel format for the DC */
 183     memset( &pfd, 0, sizeof( pfd ) );
 184     pfd.nSize = sizeof( pfd );
 185     pfd.nVersion = 1;
 186     pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
 187     pfd.iPixelType = PFD_TYPE_RGBA;
 188     pfd.cColorBits = 24;
 189     pfd.cDepthBits = 16;
 190     pfd.iLayerType = PFD_MAIN_PLANE;
 191     iFormat = ChoosePixelFormat( p_vout->p_sys->hGLDC, &pfd );
 192     SetPixelFormat( p_vout->p_sys->hGLDC, iFormat, &pfd );
 193
 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 );
 197
 198     return VLC_SUCCESS;
 199 }
 200
 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 )
 208 {
 209     wglMakeCurrent( NULL, NULL );
 210     wglDeleteContext( p_vout->p_sys->hGLRC );
 211     ReleaseDC( p_vout->p_sys->hvideownd, p_vout->p_sys->hGLDC );
 212     return;
 213 }
 214
 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 )
 221 {
 222     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 223
 224     msg_Dbg( p_vout, "CloseVideo" );
 225
 226     if( p_vout->p_sys->p_event )
 227     {
 228         vlc_object_detach( p_vout->p_sys->p_event );
 229
 230         /* Kill DirectXEventThread */
 231         p_vout->p_sys->p_event->b_die = VLC_TRUE;
 232
 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 )
 236         {
 237             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 238         }
 239
 240         vlc_thread_join( p_vout->p_sys->p_event );
 241         vlc_object_destroy( p_vout->p_sys->p_event );
 242     }
 243
 244     vlc_mutex_destroy( &p_vout->p_sys->lock );
 245
 246     if( p_vout->p_sys )
 247     {
 248         free( p_vout->p_sys );
 249         p_vout->p_sys = NULL;
 250     }
 251 }
 252
 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 )
 260 {
 261     WINDOWPLACEMENT window_placement;
 262
 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 );
 268
 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 )
 273     {
 274         RECT rect_parent;
 275         POINT point;
 276
 277         vlc_mutex_unlock( &p_vout->p_sys->lock );
 278
 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 );
 283
 284         if( !EqualRect( &rect_parent, &p_vout->p_sys->rect_parent ) )
 285         {
 286             p_vout->p_sys->rect_parent = rect_parent;
 287
 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 );
 293
 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 );
 297         }
 298     }
 299     else
 300     {
 301         vlc_mutex_unlock( &p_vout->p_sys->lock );
 302     }
 303
 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. */
 308
 309     /*
 310      * Fullscreen change
 311      */
 312     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 313         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 314     {
 315         vlc_value_t val;
 316         HWND hwnd = (p_vout->p_sys->hparent && p_vout->p_sys->hfswnd) ?
 317             p_vout->p_sys->hfswnd : p_vout->p_sys->hwnd;
 318
 319         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 320
 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 )
 325         {
 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 );
 329
 330             if( p_vout->p_sys->hparent )
 331             {
 332                 /* Retrieve current window position so fullscreen will happen
 333                  * on the right screen */
 334                 POINT point = {0,0};
 335                 RECT rect;
 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 );
 342             }
 343
 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);
 349
 350             if( p_vout->p_sys->hparent )
 351             {
 352                 RECT rect;
 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 );
 358             }
 359
 360             SetForegroundWindow( hwnd );
 361         }
 362         else
 363         {
 364             /* Change window style, no borders and no title bar */
 365             SetWindowLong( hwnd, GWL_STYLE, p_vout->p_sys->i_window_style );
 366
 367             /* Normal window */
 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);
 372
 373             if( p_vout->p_sys->hparent )
 374             {
 375                 RECT rect;
 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 );
 381
 382                 ShowWindow( hwnd, SW_HIDE );
 383                 SetForegroundWindow( p_vout->p_sys->hparent );
 384             }
 385
 386             /* Make sure the mouse cursor is displayed */
 387             PostMessage( p_vout->p_sys->hwnd, WM_VLC_SHOW_MOUSE, 0, 0 );
 388         }
 389
 390         /* Update the object variable and trigger callback */
 391         val.b_bool = p_vout->b_fullscreen;
 392         var_Set( p_vout, "fullscreen", val );
 393
 394         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 395         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 396     }
 397
 398     /*
 399      * Pointer change
 400      */
 401     if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
 402         (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 )
 403     {
 404         POINT point;
 405         HWND hwnd;
 406
 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 )
 411         {
 412             PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 413         }
 414         else
 415         {
 416             p_vout->p_sys->i_lastmoved = mdate();
 417         }
 418     }
 419
 420     /*
 421      * "Always on top" status change
 422      */
 423     if( p_vout->p_sys->b_on_top_change )
 424     {
 425         vlc_value_t val;
 426         HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 427
 428         var_Get( p_vout, "video-on-top", &val );
 429
 430         /* Set the window on top if necessary */
 431         if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 432                            & WS_EX_TOPMOST ) )
 433         {
 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 );
 438         }
 439         else
 440         /* The window shouldn't be on top */
 441         if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 442                            & WS_EX_TOPMOST ) )
 443         {
 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 );
 448         }
 449
 450         p_vout->p_sys->b_on_top_change = VLC_FALSE;
 451     }
 452
 453     /* Check if the event thread is still running */
 454     if( p_vout->p_sys->p_event->b_die )
 455     {
 456         return VLC_EGENERIC; /* exit */
 457     }
 458
 459     return VLC_SUCCESS;
 460 }
 461
 462 /*****************************************************************************
 463  * GLSwapBuffers: swap front/back buffers
 464  *****************************************************************************/
 465 static void GLSwapBuffers( vout_thread_t *p_vout )
 466 {
 467     SwapBuffers( p_vout->p_sys->hGLDC );
 468 }
 469
 470 int E_(DirectXUpdateOverlay)( vout_thread_t *p_vout )
 471 {
 472     return 1;
 473 }