vo_directx.c

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        {
            selected_guid = *lpGUID;
            selected_guid_ptr = &selected_guid;
        }
        mi.cbSize = sizeof(mi);

        if (myGetMonitorInfo(hm, &mi)) {
			monitor_rect = mi.rcMonitor;
        }
        mp_msg(MSGT_VO, MSGL_INFO ,"\t\t<--");
    }
    mp_msg(MSGT_VO, MSGL_INFO ,"\n");
    
    adapter_count++;
    
    return 1; // list all adapters
}

static uint32_t Directx_InitDirectDraw()
{
	HRESULT    (WINAPI *OurDirectDrawCreateEx)(GUID *,LPVOID *, REFIID,IUnknown FAR *);
 	LPDIRECTDRAW lpDDraw;
	DDSURFACEDESC2 ddsd;
	LPDIRECTDRAWENUMERATEEX OurDirectDrawEnumerateEx;
	HINSTANCE user32dll=LoadLibrary("user32.dll");
	
	adapter_count = 0;
	if(user32dll){
		myGetMonitorInfo=GetProcAddress(user32dll,"GetMonitorInfoA");
		if(!myGetMonitorInfo && vo_adapter_num){
			mp_msg(MSGT_VO, MSGL_ERR, "<vo_directx> -adapter is not supported on Win95\n");
			vo_adapter_num = 0;
		}
	}
	
	mp_msg(MSGT_VO, MSGL_DBG3,"<vo_directx><INFO>Initing DirectDraw\n" );

	//load direct draw DLL: based on videolans code
	hddraw_dll = LoadLibrary("DDRAW.DLL");
	if( hddraw_dll == NULL )
    {
        mp_msg(MSGT_VO, MSGL_FATAL,"<vo_directx><FATAL ERROR>failed loading ddraw.dll\n" );
		return 1;
    }
	
    last_rect.left = 0xDEADC0DE;   // reset window position cache

	if(vo_adapter_num){ //display other than default
        OurDirectDrawEnumerateEx = (LPDIRECTDRAWENUMERATEEX) GetProcAddress(hddraw_dll,"DirectDrawEnumerateExA");
        if (!OurDirectDrawEnumerateEx){
            FreeLibrary( hddraw_dll );
            hddraw_dll = NULL;
            mp_msg(MSGT_VO, MSGL_FATAL,"<vo_directx><FATAL ERROR>failed geting proc address: DirectDrawEnumerateEx\n");
            mp_msg(MSGT_VO, MSGL_FATAL,"<vo_directx><FATAL ERROR>no directx 7 or higher installed\n");
            return 1;
        }

        // enumerate all display devices attached to the desktop
        OurDirectDrawEnumerateEx(EnumCallbackEx, NULL, DDENUM_ATTACHEDSECONDARYDEVICES );

        if(vo_adapter_num >= adapter_count)
            mp_msg(MSGT_VO, MSGL_ERR,"Selected adapter (%d) doesn't exist: Default Display Adapter selected\n",vo_adapter_num);
    }
    FreeLibrary(user32dll);

	OurDirectDrawCreateEx = (void *)GetProcAddress(hddraw_dll, "DirectDrawCreateEx");
    if ( OurDirectDrawCreateEx == NULL )
     {
         FreeLibrary( hddraw_dll );
         hddraw_dll = NULL;
        mp_msg(MSGT_VO, MSGL_FATAL,"<vo_directx><FATAL ERROR>failed geting proc address: DirectDrawCreateEx\n");
 		return 1;
     }

	// initialize DirectDraw and create directx v7 object
    if (OurDirectDrawCreateEx(selected_guid_ptr, (VOID**)&g_lpdd, &IID_IDirectDraw7, NULL ) != DD_OK )
    {
        FreeLibrary( hddraw_dll );
        hddraw_dll = NULL;
        mp_msg(MSGT_VO, MSGL_FATAL,"<vo_directx><FATAL ERROR>can't initialize ddraw\n");
		return 1;
    }

	//get current screen siz for selected monitor ...
	ddsd.dwSize=sizeof(ddsd);
	ddsd.dwFlags=DDSD_WIDTH|DDSD_HEIGHT|DDSD_PIXELFORMAT;
	g_lpdd->lpVtbl->GetDisplayMode(g_lpdd, &ddsd);		
	if(vo_screenwidth && vo_screenheight)
	{
	    vm_height=vo_screenheight;
	    vm_width=vo_screenwidth;
	}
    else 
    {
	    vm_height=ddsd.dwHeight;
	    vm_width=ddsd.dwWidth;
	}


	if(vo_dbpp)vm_bpp=vo_dbpp;
	else vm_bpp=ddsd.ddpfPixelFormat.dwRGBBitCount;

	if(vidmode){
		if (g_lpdd->lpVtbl->SetCooperativeLevel(g_lpdd, hWnd, DDSCL_EXCLUSIVE|DDSCL_FULLSCREEN) != DD_OK)
		{
	        mp_msg(MSGT_VO, MSGL_FATAL,"<vo_directx><FATAL ERROR>can't set cooperativelevel for exclusive mode\n");
            return 1;
		}                                
		/*SetDisplayMode(ddobject,width,height,bpp,refreshrate,aditionalflags)*/
		if(g_lpdd->lpVtbl->SetDisplayMode(g_lpdd,vm_width, vm_height, vm_bpp,0,0) != DD_OK)
		{
	        mp_msg(MSGT_VO, MSGL_FATAL,"<vo_directx><FATAL ERROR>can't set displaymode\n");
	        return 1;
		}
	    mp_msg(MSGT_VO, MSGL_V,"<vo_directx><INFO>Inited adapter %i for %i x %i @ %i \n",vo_adapter_num,vm_width,vm_height,vm_bpp);	
	    return 0;	
	}
	if (g_lpdd->lpVtbl->SetCooperativeLevel(g_lpdd, hWnd, DDSCL_NORMAL) != DD_OK) // or DDSCL_SETFOCUSWINDOW
     {
        mp_msg(MSGT_VO, MSGL_FATAL,"<vo_directx><FATAL ERROR>could not set cooperativelevel for hardwarecheck\n");
		return 1;
    }
    mp_msg(MSGT_VO, MSGL_DBG3,"<vo_directx><INFO>DirectDraw Inited\n");
	return 0;
}	

static void check_events(void)
{
    MSG msg;
    while (PeekMessage(&msg, NULL, 0, 0,PM_REMOVE))
    {
		TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
}

static uint32_t Directx_ManageDisplay()
{   
    HRESULT         ddrval;
    DDCAPS          capsDrv;
    DDOVERLAYFX     ovfx;
    DWORD           dwUpdateFlags=0;
    int width,height;
   
    if(!vidmode && !vo_fs && WinID!=-1) {
      RECT current_rect = {0, 0, 0, 0};
      GetWindowRect(hWnd, &current_rect);
      if ((current_rect.left   == last_rect.left)
      &&  (current_rect.top    == last_rect.top)
      &&  (current_rect.right  == last_rect.right)
      &&  (current_rect.bottom == last_rect.bottom))
        return 0;
      last_rect = current_rect;
    }

    if(vo_fs || vidmode){
      aspect(&width,&height,A_ZOOM);
      rd.left=(vo_screenwidth-width)/2;
      rd.top=(vo_screenheight-height)/2;
      if (WinID == -1)
        if(ShowCursor(FALSE)>=0)while(ShowCursor(FALSE)>=0){}
    }
    else if (WinID != -1 && vo_geometry) {
      POINT pt;
      pt.x = vo_dx;
      pt.y = vo_dy;
      ClientToScreen(hWnd,&pt);  
      width=d_image_width;
      height=d_image_height;
      rd.left = pt.x;
      rd.top = pt.y;
      while(ShowCursor(TRUE)<=0){}
    }
    else {
      POINT pt;
      pt.x = 0;  //overlayposition relative to the window
      pt.y = 0;
      ClientToScreen(hWnd,&pt);  
      GetClientRect(hWnd, &rd);
	  width=rd.right - rd.left;
	  height=rd.bottom - rd.top;
      pt.x -= monitor_rect.left;    /* move coordinates from global to local monitor space */
      pt.y -= monitor_rect.top;
      rd.right -= monitor_rect.left;
      rd.bottom -= monitor_rect.top;
	  rd.left = pt.x;
      rd.top = pt.y; 
      if(!nooverlay && (!width || !height)){
	    /*window is minimized*/
	    ddrval = g_lpddsOverlay->lpVtbl->UpdateOverlay(g_lpddsOverlay,NULL, g_lpddsPrimary, NULL, DDOVER_HIDE, NULL);
	    return 0;
	  }
      if(vo_keepaspect){
          int tmpheight=((float)width/window_aspect);
          tmpheight+=tmpheight%2;       
          if(tmpheight > height){
            width=((float)height*window_aspect);
            width+=width%2;       
          }
          else height=tmpheight;
      }    
      if (WinID == -1)
          while(ShowCursor(TRUE)<=0){}
    }
    rd.right=rd.left+width;
    rd.bottom=rd.top+height;

	/*ok, let's workaround some overlay limitations*/
	if(!nooverlay)
	{
		uint32_t        uStretchFactor1000;  //minimum stretch 
        uint32_t        xstretch1000,ystretch1000; 
		/*get driver capabilities*/
        ZeroMemory(&capsDrv, sizeof(capsDrv));
        capsDrv.dwSize = sizeof(capsDrv);
        if(g_lpdd->lpVtbl->GetCaps(g_lpdd,&capsDrv, NULL) != DD_OK)return 1;
		/*get minimum stretch, depends on display adaptor and mode (refresh rate!) */
        uStretchFactor1000 = capsDrv.dwMinOverlayStretch>1000 ? capsDrv.dwMinOverlayStretch : 1000;
        rd.right = ((width+rd.left)*uStretchFactor1000+999)/1000;
        rd.bottom = (height+rd.top)*uStretchFactor1000/1000;
        /*calculate xstretch1000 and ystretch1000*/
        xstretch1000 = ((rd.right - rd.left)* 1000)/image_width ;
        ystretch1000 = ((rd.bottom - rd.top)* 1000)/image_height;
		rs.left=0;
		rs.right=image_width;
		rs.top=0;
		rs.bottom=image_height;
        if(rd.left < 0)rs.left=(-rd.left*1000)/xstretch1000;
        if(rd.top < 0)rs.top=(-rd.top*1000)/ystretch1000;
        if(rd.right > vo_screenwidth)rs.right=((vo_screenwidth-rd.left)*1000)/xstretch1000;
        if(rd.bottom > vo_screenheight)rs.bottom=((vo_screenheight-rd.top)*1000)/ystretch1000;
		/*do not allow to zoom or shrink if hardware isn't able to do so*/
		if((width < image_width)&& !(capsDrv.dwFXCaps & DDFXCAPS_OVERLAYSHRINKX))
		{
			if(capsDrv.dwFXCaps & DDFXCAPS_OVERLAYSHRINKXN)mp_msg(MSGT_VO, MSGL_ERR,"<vo_directx><ERROR>can only shrinkN\n");
	        else mp_msg(MSGT_VO, MSGL_ERR,"<vo_directx><ERROR>can't shrink x\n");
	        rd.right=rd.left+image_width;
		}
		else if((width > image_width)&& !(capsDrv.dwFXCaps & DDFXCAPS_OVERLAYSTRETCHX))
		{
			if(capsDrv.dwFXCaps & DDFXCAPS_OVERLAYSTRETCHXN)mp_msg(MSGT_VO, MSGL_ERR,"<vo_directx><ERROR>can only stretchN\n"); 
	        else mp_msg(MSGT_VO, MSGL_ERR,"<vo_directx><ERROR>can't stretch x\n");
	        rd.right = rd.left+image_width;
		}
		if((height < image_height) && !(capsDrv.dwFXCaps & DDFXCAPS_OVERLAYSHRINKY))
		{
			if(capsDrv.dwFXCaps & DDFXCAPS_OVERLAYSHRINKYN)mp_msg(MSGT_VO, MSGL_ERR,"<vo_directx><ERROR>can only shrinkN\n");
	        else mp_msg(MSGT_VO, MSGL_ERR,"<vo_directx><ERROR>can't shrink y\n");
	        rd.bottom = rd.top + image_height;
		}
		else if((height > image_height ) && !(capsDrv.dwFXCaps & DDFXCAPS_OVERLAYSTRETCHY))
		{
			if(capsDrv.dwFXCaps & DDFXCAPS_OVERLAYSTRETCHYN)mp_msg(MSGT_VO, MSGL_ERR,"<vo_directx><ERROR>can only stretchN\n");
	        else mp_msg(MSGT_VO, MSGL_ERR,"<vo_directx><ERROR>can't stretch y\n");
	        rd.bottom = rd.top + image_height;
		} 
		/*the last thing to check are alignment restrictions
          these expressions (x & -y) just do alignment by dropping low order bits...
          so to round up, we add first, then truncate*/
		if((capsDrv.dwCaps & DDCAPS_ALIGNBOUNDARYSRC) && capsDrv.dwAlignBoundarySrc)
		  rs.left = (rs.left + capsDrv.dwAlignBoundarySrc / 2) & -(signed)(capsDrv.dwAlignBoundarySrc);
        if((capsDrv.dwCaps & DDCAPS_ALIGNSIZESRC) && capsDrv.dwAlignSizeSrc)
		  rs.right = rs.left + ((rs.right - rs.left + capsDrv.dwAlignSizeSrc / 2) & -(signed) (capsDrv.dwAlignSizeSrc));
        if((capsDrv.dwCaps & DDCAPS_ALIGNBOUNDARYDEST) && capsDrv.dwAlignBoundaryDest)
		  rd.left = (rd.left + capsDrv.dwAlignBoundaryDest / 2) & -(signed)(capsDrv.dwAlignBoundaryDest);
        if((capsDrv.dwCaps & DDCAPS_ALIGNSIZEDEST) && capsDrv.dwAlignSizeDest)
		  rd.right = rd.left + ((rd.right - rd.left) & -(signed) (capsDrv.dwAlignSizeDest));
		/*create an overlay FX structure to specify a destination color key*/
		ZeroMemory(&ovfx, sizeof(ovfx));
        ovfx.dwSize = sizeof(ovfx);
        if(vo_fs||vidmode)
		{
			ovfx.dckDestColorkey.dwColorSpaceLowValue = 0; 
            ovfx.dckDestColorkey.dwColorSpaceHighValue = 0;
		}
		else
		{
			ovfx.dckDestColorkey.dwColorSpaceLowValue = destcolorkey; 
            ovfx.dckDestColorkey.dwColorSpaceHighValue = destcolorkey;
		}
        // set the flags we'll send to UpdateOverlay      //DDOVER_AUTOFLIP|DDOVERFX_MIRRORLEFTRIGHT|DDOVERFX_MIRRORUPDOWN could be useful?;
        dwUpdateFlags = DDOVER_SHOW | DDOVER_DDFX;
        /*if hardware can't do colorkeying set the window on top*/
		if(capsDrv.dwCKeyCaps & DDCKEYCAPS_DESTOVERLAY) dwUpdateFlags |= DDOVER_KEYDESTOVERRIDE;
        else vo_ontop = 1;
	}
    else
    {
        g_lpddclipper->lpVtbl->SetHWnd(g_lpddclipper, 0,(vo_fs && !vidmode)?hWndFS: hWnd);
    }       
	
    if(!vidmode && !vo_fs){
      if(WinID == -1) {
          RECT rdw=rd;
          if (vo_border)
          AdjustWindowRect(&rdw,WNDSTYLE,FALSE);
//          printf("window: %i %i %ix%i\n",rdw.left,rdw.top,rdw.right - rdw.left,rdw.bottom - rdw.top);      
		  rdw.left += monitor_rect.left; /* move to global coordinate space */
          rdw.top += monitor_rect.top;
		  rdw.right += monitor_rect.left;
		  rdw.bottom += monitor_rect.top;
          SetWindowPos(hWnd,(vo_ontop)?HWND_TOPMOST:(vo_rootwin?HWND_BOTTOM:HWND_NOTOPMOST),rdw.left,rdw.top,rdw.right-rdw.left,rdw.bottom-rdw.top,SWP_NOOWNERZORDER); 
      }
    }
    else SetWindowPos(vidmode?hWnd:hWndFS,vo_rootwin?HWND_BOTTOM:HWND_TOPMOST,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_NOOWNERZORDER|SWP_NOCOPYBITS);

    /*make sure the overlay is inside the screen*/
    if(rd.left<0)rd.left=0;
    if(rd.right>vo_screenwidth)rd.right=vo_screenwidth;
    if(rd.top<0)rd.top=0;
    if(rd.bottom>vo_screenheight)rd.bottom=vo_screenheight;
    
  	/*for nonoverlay mode we are finished, for overlay mode we have to display the overlay first*/
	if(nooverlay)return 0;
	
//    printf("overlay: %i %i %ix%i\n",rd.left,rd.top,rd.right - rd.left,rd.bottom - rd.top);
	ddrval = g_lpddsOverlay->lpVtbl->UpdateOverlay(g_lpddsOverlay,&rs, g_lpddsPrimary, &rd, dwUpdateFlags, &ovfx);
    if(FAILED(ddrval))
    {
        // one cause might be the driver lied about minimum stretch 
        // we should try upping the destination size a bit, or
        // perhaps shrinking the source size
	   	mp_msg(MSGT_VO, MSGL_ERR ,"<vo_directx><ERROR>UpdateOverlay failed\n" );
	  	mp_msg(MSGT_VO, MSGL_ERR ,"<vo_directx><ERROR>Overlay:x1:%i,y1:%i,x2:%i,y2:%i,w:%i,h:%i\n",rd.left,rd.top,rd.right,rd.bottom,rd.right - rd.left,rd.bottom - rd.top );
	  	mp_msg(MSGT_VO, MSGL_ERR ,"<vo_directx><ERROR>");
		switch (ddrval)
		{
			case DDERR_NOSTRETCHHW:
				{mp_msg(MSGT_VO, MSGL_ERR ,"hardware can't stretch: try to size the window back\n");break;}
            case DDERR_INVALIDRECT:
				{mp_msg(MSGT_VO, MSGL_ERR ,"invalid rectangle\n");break;}
			case DDERR_INVALIDPARAMS:
				{mp_msg(MSGT_VO, MSGL_ERR ,"invalid parameters\n");break;}
			case DDERR_HEIGHTALIGN:
				{mp_msg(MSGT_VO, MSGL_ERR ,"height align\n");break;}
			case DDERR_XALIGN:
				{mp_msg(MSGT_VO, MSGL_ERR ,"x align\n");break;}
			case DDERR_UNSUPPORTED:
				{mp_msg(MSGT_VO, MSGL_ERR ,"unsupported\n");break;}
			case DDERR_INVALIDSURFACETYPE:
				{mp_msg(MSGT_VO, MSGL_ERR ,"invalid surfacetype\n");break;}
			case DDERR_INVALIDOBJECT:
				{mp_msg(MSGT_VO, MSGL_ERR ,"invalid object\n");break;}
			case DDERR_SURFACELOST:
				{
					mp_msg(MSGT_VO, MSGL_ERR ,"surfaces lost\n");
					g_lpddsOverlay->lpVtbl->Restore( g_lpddsOverlay ); //restore and try again
			        g_lpddsPrimary->lpVtbl->Restore( g_lpddsPrimary );
			        ddrval = g_lpddsOverlay->lpVtbl->UpdateOverlay(g_lpddsOverlay,&rs, g_lpddsPrimary, &rd, dwUpdateFlags, &ovfx);   
					if(ddrval !=DD_OK)mp_msg(MSGT_VO, MSGL_FATAL ,"<vo_directx><FATAL ERROR>UpdateOverlay failed again\n" );
					break;
				}
            default:
                mp_msg(MSGT_VO, MSGL_ERR ," 0x%x\n",ddrval);      
		}
	    /*ok we can't do anything about it -> hide overlay*/
		if(ddrval != DD_OK)
		{
			ddrval = g_lpddsOverlay->lpVtbl->UpdateOverlay(g_lpddsOverlay,NULL, g_lpddsPrimary, NULL, DDOVER_HIDE, NULL);
            return 1;
		}
	}
    return 0;
}

//find out supported overlay pixelformats
static uint32_t Directx_CheckOverlayPixelformats()
{
    DDCAPS          capsDrv;
    HRESULT         ddrval;
    DDSURFACEDESC2   ddsdOverlay;
	uint32_t        i;
    uint32_t        formatcount = 0;
	//get driver caps to determine overlay support
    ZeroMemory(&capsDrv, sizeof(capsDrv));
    capsDrv.dwSize = sizeof(capsDrv);
	ddrval = g_lpdd->lpVtbl->GetCaps(g_lpdd,&capsDrv, NULL);
    if (FAILED(ddrval))
	{
        mp_msg(MSGT_VO, MSGL_ERR ,"<vo_directx><ERROR>failed getting ddrawcaps\n");
		return 1;
	}
    if (!(capsDrv.dwCaps & DDCAPS_OVERLAY))
    {
		mp_msg(MSGT_VO, MSGL_ERR ,"<vo_directx><ERROR>Your card doesn't support overlay\n");
		return 1;
	}
    mp_msg(MSGT_VO, MSGL_V ,"<vo_directx><INFO>testing supported overlay pixelformats\n");
    //it is not possible to query for pixel formats supported by the
    //overlay hardware: try out various formats till one works  
    ZeroMemory(&ddsdOverlay, sizeof(ddsdOverlay));
    ddsdOverlay.dwSize = sizeof(ddsdOverlay);
    ddsdOverlay.ddsCaps.dwCaps=DDSCAPS_OVERLAY | DDSCAPS_VIDEOMEMORY;
    ddsdOverlay.dwFlags= DDSD_CAPS|DDSD_HEIGHT|DDSD_WIDTH| DDSD_PIXELFORMAT;
    ddsdOverlay.dwWidth=300;
    ddsdOverlay.dwHeight=280;
    ddsdOverlay.dwBackBufferCount=0;