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 the VideoLAN team
   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_shortname( "OpenGL" );
  65     set_description( _("OpenGL video output") );
  66     set_capability( "opengl provider", 100 );
  67     add_shortcut( "glwin32" );
  68     set_callbacks( OpenVideo, CloseVideo );
  69
  70     /* FIXME: Hack to avoid unregistering our window class */
  71     linked_with_a_crap_library_which_uses_atexit( );
  72 vlc_module_end();
  73
  74 #if 0 /* FIXME */
  75     /* check if we registered a window class because we need to
  76      * unregister it */
  77     WNDCLASS wndclass;
  78     if( GetClassInfo( GetModuleHandle(NULL), "VLC DirectX", &wndclass ) )
  79         UnregisterClass( "VLC DirectX", GetModuleHandle(NULL) );
  80 #endif
  81
  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 )
  88 {
  89     vout_thread_t * p_vout = (vout_thread_t *)p_this;
  90     vlc_value_t val;
  91
  92     /* Allocate structure */
  93     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
  94     if( p_vout->p_sys == NULL )
  95     {
  96         msg_Err( p_vout, "out of memory" );
  97         return VLC_ENOMEM;
  98     }
  99     memset( p_vout->p_sys, 0, sizeof( vout_sys_t ) );
 100
 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;
 106
 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 );
 118
 119     var_Create( p_vout, "video-title", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
 120
 121     p_vout->p_sys->b_cursor_hidden = 0;
 122     p_vout->p_sys->i_lastmoved = mdate();
 123
 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;
 127
 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 ) )
 141     {
 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;
 145         goto error;
 146     }
 147
 148     if( p_vout->p_sys->p_event->b_error )
 149     {
 150         msg_Err( p_vout, "DirectXEventThread failed" );
 151         goto error;
 152     }
 153
 154     vlc_object_attach( p_vout->p_sys->p_event, p_vout );
 155
 156     msg_Dbg( p_vout, "DirectXEventThread running" );
 157
 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 );
 162
 163     return VLC_SUCCESS;
 164
 165  error:
 166     CloseVideo( VLC_OBJECT(p_vout) );
 167     return VLC_EGENERIC;
 168 }
 169
 170 /*****************************************************************************
 171  * Init: initialize video thread output method
 172  *****************************************************************************/
 173 static int Init( vout_thread_t *p_vout )
 174 {
 175     PIXELFORMATDESCRIPTOR pfd;
 176     int iFormat;
 177
 178     /* Change the window title bar text */
 179     PostMessage( p_vout->p_sys->hwnd, WM_VLC_CHANGE_TEXT, 0, 0 );
 180
 181     p_vout->p_sys->hGLDC = GetDC( p_vout->p_sys->hvideownd );
 182
 183     /* Set the pixel format for the DC */
 184     memset( &pfd, 0, sizeof( pfd ) );
 185     pfd.nSize = sizeof( pfd );
 186     pfd.nVersion = 1;
 187     pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
 188     pfd.iPixelType = PFD_TYPE_RGBA;
 189     pfd.cColorBits = 24;
 190     pfd.cDepthBits = 16;
 191     pfd.iLayerType = PFD_MAIN_PLANE;
 192     iFormat = ChoosePixelFormat( p_vout->p_sys->hGLDC, &pfd );
 193     SetPixelFormat( p_vout->p_sys->hGLDC, iFormat, &pfd );
 194
 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 );
 198
 199     return VLC_SUCCESS;
 200 }
 201
 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 )
 209 {
 210     wglMakeCurrent( NULL, NULL );
 211     wglDeleteContext( p_vout->p_sys->hGLRC );
 212     ReleaseDC( p_vout->p_sys->hvideownd, p_vout->p_sys->hGLDC );
 213     return;
 214 }
 215
 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 )
 222 {
 223     vout_thread_t * p_vout = (vout_thread_t *)p_this;
 224
 225     msg_Dbg( p_vout, "CloseVideo" );
 226
 227     if( p_vout->p_sys->p_event )
 228     {
 229         vlc_object_detach( p_vout->p_sys->p_event );
 230
 231         /* Kill DirectXEventThread */
 232         p_vout->p_sys->p_event->b_die = VLC_TRUE;
 233
 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 )
 237         {
 238             PostMessage( p_vout->p_sys->hwnd, WM_NULL, 0, 0);
 239         }
 240
 241         vlc_thread_join( p_vout->p_sys->p_event );
 242         vlc_object_destroy( p_vout->p_sys->p_event );
 243     }
 244
 245     vlc_mutex_destroy( &p_vout->p_sys->lock );
 246
 247     if( p_vout->p_sys )
 248     {
 249         free( p_vout->p_sys );
 250         p_vout->p_sys = NULL;
 251     }
 252 }
 253
 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 )
 261 {
 262     WINDOWPLACEMENT window_placement;
 263
 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 );
 269
 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 )
 274     {
 275         RECT rect_parent;
 276         POINT point;
 277
 278         vlc_mutex_unlock( &p_vout->p_sys->lock );
 279
 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 );
 284
 285         if( !EqualRect( &rect_parent, &p_vout->p_sys->rect_parent ) )
 286         {
 287             p_vout->p_sys->rect_parent = rect_parent;
 288
 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 );
 294
 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 );
 298         }
 299     }
 300     else
 301     {
 302         vlc_mutex_unlock( &p_vout->p_sys->lock );
 303     }
 304
 305     /* Check for cropping changes */
 306     if( p_vout->fmt_out.i_x_offset != p_vout->fmt_in.i_x_offset ||
 307         p_vout->fmt_out.i_y_offset != p_vout->fmt_in.i_y_offset ||
 308         p_vout->fmt_out.i_visible_width != p_vout->fmt_in.i_visible_width ||
 309         p_vout->fmt_out.i_visible_height != p_vout->fmt_in.i_visible_height )
 310     {
 311         p_vout->fmt_out.i_x_offset = p_vout->fmt_in.i_x_offset;
 312         p_vout->fmt_out.i_y_offset = p_vout->fmt_in.i_y_offset;
 313         p_vout->fmt_out.i_visible_width = p_vout->fmt_in.i_visible_width;
 314         p_vout->fmt_out.i_visible_height = p_vout->fmt_in.i_visible_height;
 315         E_(DirectXUpdateRects)( p_vout, VLC_TRUE );
 316     }
 317
 318     /* We used to call the Win32 PeekMessage function here to read the window
 319      * messages. But since window can stay blocked into this function for a
 320      * long time (for example when you move your window on the screen), I
 321      * decided to isolate PeekMessage in another thread. */
 322
 323     /*
 324      * Fullscreen change
 325      */
 326     if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE
 327         || p_vout->p_sys->i_changes & VOUT_FULLSCREEN_CHANGE )
 328     {
 329         vlc_value_t val;
 330         HWND hwnd = (p_vout->p_sys->hparent && p_vout->p_sys->hfswnd) ?
 331             p_vout->p_sys->hfswnd : p_vout->p_sys->hwnd;
 332
 333         p_vout->b_fullscreen = ! p_vout->b_fullscreen;
 334
 335         /* We need to switch between Maximized and Normal sized window */
 336         window_placement.length = sizeof(WINDOWPLACEMENT);
 337         GetWindowPlacement( hwnd, &window_placement );
 338         if( p_vout->b_fullscreen )
 339         {
 340             /* Change window style, no borders and no title bar */
 341             int i_style = WS_CLIPCHILDREN | WS_VISIBLE;
 342             SetWindowLong( hwnd, GWL_STYLE, i_style );
 343
 344             if( p_vout->p_sys->hparent )
 345             {
 346                 /* Retrieve current window position so fullscreen will happen
 347                  * on the right screen */
 348                 POINT point = {0,0};
 349                 RECT rect;
 350                 ClientToScreen( p_vout->p_sys->hwnd, &point );
 351                 GetClientRect( p_vout->p_sys->hwnd, &rect );
 352                 SetWindowPos( hwnd, 0, point.x, point.y,
 353                               rect.right, rect.bottom,
 354                               SWP_NOZORDER|SWP_FRAMECHANGED );
 355                 GetWindowPlacement( hwnd, &window_placement );
 356             }
 357
 358             /* Maximize window */
 359             window_placement.showCmd = SW_SHOWMAXIMIZED;
 360             SetWindowPlacement( hwnd, &window_placement );
 361             SetWindowPos( hwnd, 0, 0, 0, 0, 0,
 362                           SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);
 363
 364             if( p_vout->p_sys->hparent )
 365             {
 366                 RECT rect;
 367                 GetClientRect( hwnd, &rect );
 368                 SetParent( p_vout->p_sys->hwnd, hwnd );
 369                 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
 370                               rect.right, rect.bottom,
 371                               SWP_NOZORDER|SWP_FRAMECHANGED );
 372             }
 373
 374             SetForegroundWindow( hwnd );
 375         }
 376         else
 377         {
 378             /* Change window style, no borders and no title bar */
 379             SetWindowLong( hwnd, GWL_STYLE, p_vout->p_sys->i_window_style );
 380
 381             /* Normal window */
 382             window_placement.showCmd = SW_SHOWNORMAL;
 383             SetWindowPlacement( hwnd, &window_placement );
 384             SetWindowPos( hwnd, 0, 0, 0, 0, 0,
 385                           SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);
 386
 387             if( p_vout->p_sys->hparent )
 388             {
 389                 RECT rect;
 390                 GetClientRect( p_vout->p_sys->hparent, &rect );
 391                 SetParent( p_vout->p_sys->hwnd, p_vout->p_sys->hparent );
 392                 SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
 393                               rect.right, rect.bottom,
 394                               SWP_NOZORDER|SWP_FRAMECHANGED );
 395
 396                 ShowWindow( hwnd, SW_HIDE );
 397                 SetForegroundWindow( p_vout->p_sys->hparent );
 398             }
 399
 400             /* Make sure the mouse cursor is displayed */
 401             PostMessage( p_vout->p_sys->hwnd, WM_VLC_SHOW_MOUSE, 0, 0 );
 402         }
 403
 404         /* Update the object variable and trigger callback */
 405         val.b_bool = p_vout->b_fullscreen;
 406         var_Set( p_vout, "fullscreen", val );
 407
 408         p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 409         p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
 410     }
 411
 412     /*
 413      * Pointer change
 414      */
 415     if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
 416         (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 )
 417     {
 418         POINT point;
 419         HWND hwnd;
 420
 421         /* Hide the cursor only if it is inside our window */
 422         GetCursorPos( &point );
 423         hwnd = WindowFromPoint(point);
 424         if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )
 425         {
 426             PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
 427         }
 428         else
 429         {
 430             p_vout->p_sys->i_lastmoved = mdate();
 431         }
 432     }
 433
 434     /*
 435      * "Always on top" status change
 436      */
 437     if( p_vout->p_sys->b_on_top_change )
 438     {
 439         vlc_value_t val;
 440         HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );
 441
 442         var_Get( p_vout, "video-on-top", &val );
 443
 444         /* Set the window on top if necessary */
 445         if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 446                            & WS_EX_TOPMOST ) )
 447         {
 448             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 449                            MF_BYCOMMAND | MFS_CHECKED );
 450             SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
 451                           SWP_NOSIZE | SWP_NOMOVE );
 452         }
 453         else
 454         /* The window shouldn't be on top */
 455         if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
 456                            & WS_EX_TOPMOST ) )
 457         {
 458             CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
 459                            MF_BYCOMMAND | MFS_UNCHECKED );
 460             SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
 461                           SWP_NOSIZE | SWP_NOMOVE );
 462         }
 463
 464         p_vout->p_sys->b_on_top_change = VLC_FALSE;
 465     }
 466
 467     /* Check if the event thread is still running */
 468     if( p_vout->p_sys->p_event->b_die )
 469     {
 470         return VLC_EGENERIC; /* exit */
 471     }
 472
 473     return VLC_SUCCESS;
 474 }
 475
 476 /*****************************************************************************
 477  * GLSwapBuffers: swap front/back buffers
 478  *****************************************************************************/
 479 static void GLSwapBuffers( vout_thread_t *p_vout )
 480 {
 481     SwapBuffers( p_vout->p_sys->hGLDC );
 482 }
 483
 484 int E_(DirectXUpdateOverlay)( vout_thread_t *p_vout )
 485 {
 486     return 1;
 487 }