surface.c File Reference

#include "framebuf.h"

Include dependency graph for surface.c:

Go to the source code of this file.

Functions
HSURF APIENTRY	DrvEnableSurface (IN DHPDEV dhpdev)
VOID APIENTRY	DrvDisableSurface (IN DHPDEV dhpdev)
BOOL APIENTRY	DrvAssertMode (IN DHPDEV dhpdev, IN BOOL bEnable)

Function Documentation

DrvAssertMode()

BOOL APIENTRY DrvAssertMode	(	IN DHPDEV	dhpdev,
		IN BOOL	bEnable
	)

Definition at line 168 of file surface.c.

{
   PPDEV ppdev = (PPDEV)dhpdev;
   ULONG ulTemp;

   if (bEnable)
   {
      /*
       * Reinitialize the device to a clean state.
       */
      if (EngDeviceIoControl(ppdev->hDriver, IOCTL_VIDEO_SET_CURRENT_MODE,
                             &(ppdev->ModeIndex), sizeof(ULONG), NULL, 0,
                             &ulTemp))
      {
          /* We failed, bail out */
          return FALSE;
      }
      if (ppdev->BitsPerPixel == 8)
      {
         IntSetPalette(dhpdev, ppdev->PaletteEntries, 0, 256);
      }

      return TRUE;
   }
   else
   {
      /*
       * Call the miniport driver to reset the device to a known state.
       */
      return !EngDeviceIoControl(ppdev->hDriver, IOCTL_VIDEO_RESET_DEVICE,
                                 NULL, 0, NULL, 0, &ulTemp);
   }
}

DrvDisableSurface()

VOID APIENTRY DrvDisableSurface

(

IN DHPDEV

dhpdev

)

Definition at line 133 of file surface.c.

{
   DWORD ulTemp;
   VIDEO_MEMORY VideoMemory;
   PPDEV ppdev = (PPDEV)dhpdev;

   EngDeleteSurface(ppdev->hSurfEng);
   ppdev->hSurfEng = NULL;

#ifdef EXPERIMENTAL_MOUSE_CURSOR_SUPPORT
   /* Clear all mouse pointer surfaces. */
   DrvSetPointerShape(NULL, NULL, NULL, NULL, 0, 0, 0, 0, NULL, 0);
#endif

   /*
    * Unmap the framebuffer.
    */

   VideoMemory.RequestedVirtualAddress = ((PPDEV)dhpdev)->ScreenPtr;
   EngDeviceIoControl(((PPDEV)dhpdev)->hDriver, IOCTL_VIDEO_UNMAP_VIDEO_MEMORY,
                      &VideoMemory, sizeof(VIDEO_MEMORY), NULL, 0, &ulTemp);
}

DrvEnableSurface()

HSURF APIENTRY DrvEnableSurface

(

IN DHPDEV

dhpdev

)

Definition at line 34 of file surface.c.

{
   PPDEV ppdev = (PPDEV)dhpdev;
   HSURF hSurface;
   ULONG BitmapType;
   SIZEL ScreenSize;
   VIDEO_MEMORY VideoMemory;
   VIDEO_MEMORY_INFORMATION VideoMemoryInfo;
   ULONG ulTemp;

   /*
    * Set video mode of our adapter.
    */

   if (EngDeviceIoControl(ppdev->hDriver, IOCTL_VIDEO_SET_CURRENT_MODE,
                          &(ppdev->ModeIndex), sizeof(ULONG), NULL, 0,
                          &ulTemp))
   {
      return NULL;
   }

   /*
    * Map the framebuffer into our memory.
    */

   VideoMemory.RequestedVirtualAddress = NULL;
   if (EngDeviceIoControl(ppdev->hDriver, IOCTL_VIDEO_MAP_VIDEO_MEMORY,
                          &VideoMemory, sizeof(VIDEO_MEMORY),
                          &VideoMemoryInfo, sizeof(VIDEO_MEMORY_INFORMATION),
                          &ulTemp))
   {
      return NULL;
   }

   ppdev->ScreenPtr = VideoMemoryInfo.FrameBufferBase;

   switch (ppdev->BitsPerPixel)
   {
      case 8:
         IntSetPalette(dhpdev, ppdev->PaletteEntries, 0, 256);
         BitmapType = BMF_8BPP;
         break;

      case 16:
         BitmapType = BMF_16BPP;
         break;

      case 24:
         BitmapType = BMF_24BPP;
         break;

      case 32:
         BitmapType = BMF_32BPP;
         break;

      default:
         return NULL;
   }

   ppdev->iDitherFormat = BitmapType;

   ScreenSize.cx = ppdev->ScreenWidth;
   ScreenSize.cy = ppdev->ScreenHeight;

   hSurface = (HSURF)EngCreateBitmap(ScreenSize, ppdev->ScreenDelta, BitmapType,
                                     (ppdev->ScreenDelta > 0) ? BMF_TOPDOWN : 0,
                                     ppdev->ScreenPtr);
   if (hSurface == NULL)
   {
      return NULL;
   }

   /*
    * Associate the surface with our device.
    */

   if (!EngAssociateSurface(hSurface, ppdev->hDevEng, 0))
   {
      EngDeleteSurface(hSurface);
      return NULL;
   }

   ppdev->hSurfEng = hSurface;

   return hSurface;
}