mirror of
https://github.com/reactos/reactos.git
synced 2024-07-03 19:24:20 +00:00
107 lines
4.6 KiB
C
107 lines
4.6 KiB
C
/*
|
|
* PROJECT: ReactOS Framebuffer Display Driver
|
|
* LICENSE: Microsoft NT4 DDK Sample Code License
|
|
* FILE: win32ss/drivers/displays/vga_new/driver.h
|
|
* PURPOSE: Main Driver Header File
|
|
* PROGRAMMERS: Copyright (c) 1992-1995 Microsoft Corporation
|
|
* ReactOS Portable Systems Group
|
|
*/
|
|
|
|
//#define DBG 1
|
|
#include "stddef.h"
|
|
#include <stdarg.h>
|
|
#include "windef.h"
|
|
#include "wingdi.h"
|
|
#include "winddi.h"
|
|
#include "devioctl.h"
|
|
#include "ntddvdeo.h"
|
|
#include "debug.h"
|
|
|
|
typedef struct _PDEV
|
|
{
|
|
HANDLE hDriver; // Handle to \Device\Screen
|
|
HDEV hdevEng; // Engine's handle to PDEV
|
|
HSURF hsurfEng; // Engine's handle to surface
|
|
HPALETTE hpalDefault; // Handle to the default palette for device.
|
|
PBYTE pjScreen; // This is pointer to base screen address
|
|
ULONG cxScreen; // Visible screen width
|
|
ULONG cyScreen; // Visible screen height
|
|
ULONG ulMode; // Mode the mini-port driver is in.
|
|
LONG lDeltaScreen; // Distance from one scan to the next.
|
|
ULONG cScreenSize; // size of video memory, including
|
|
// offscreen memory.
|
|
PVOID pOffscreenList; // linked list of DCI offscreen surfaces.
|
|
FLONG flRed; // For bitfields device, Red Mask
|
|
FLONG flGreen; // For bitfields device, Green Mask
|
|
FLONG flBlue; // For bitfields device, Blue Mask
|
|
ULONG cPaletteShift; // number of bits the 8-8-8 palette must
|
|
// be shifted by to fit in the hardware
|
|
// palette.
|
|
ULONG ulBitCount; // # of bits per pel 8,16,24,32 are only supported.
|
|
POINTL ptlHotSpot; // adjustment for pointer hot spot
|
|
VIDEO_POINTER_CAPABILITIES PointerCapabilities; // HW pointer abilities
|
|
PVIDEO_POINTER_ATTRIBUTES pPointerAttributes; // hardware pointer attributes
|
|
DWORD cjPointerAttributes; // Size of buffer allocated
|
|
BOOL fHwCursorActive; // Are we currently using the hw cursor
|
|
PALETTEENTRY *pPal; // If this is pal managed, this is the pal
|
|
BOOL bSupportDCI; // Does the miniport support DCI?
|
|
// eVb: 3.1 [DDK Change] - Support new VGA Miniport behavior w.r.t updated framebuffer remapping
|
|
LONG flHooks;
|
|
// eVb: 3.1 [END]
|
|
// eVb: 3.1 [VGARISC Change] - Add new fields for VGA support
|
|
SURFOBJ* pso;
|
|
UCHAR* pjBase;
|
|
// eVb: 3.1 [END]
|
|
} PDEV, *PPDEV;
|
|
|
|
DWORD getAvailableModes(HANDLE, PVIDEO_MODE_INFORMATION *, DWORD *);
|
|
BOOL bInitPDEV(PPDEV, PDEVMODEW, GDIINFO *, DEVINFO *);
|
|
BOOL bInitSURF(PPDEV, BOOL);
|
|
BOOL bInitPaletteInfo(PPDEV, DEVINFO *);
|
|
BOOL bInitPointer(PPDEV, DEVINFO *);
|
|
BOOL bInit256ColorPalette(PPDEV);
|
|
VOID vDisablePalette(PPDEV);
|
|
VOID vDisableSURF(PPDEV);
|
|
|
|
#define MAX_CLUT_SIZE (sizeof(VIDEO_CLUT) + (sizeof(ULONG) * 256))
|
|
|
|
//
|
|
// Determines the size of the DriverExtra information in the DEVMODE
|
|
// structure passed to and from the display driver.
|
|
//
|
|
|
|
#define DRIVER_EXTRA_SIZE 0
|
|
|
|
// eVb: 3.2 [VGARISC Change] - Transform into VGA driver
|
|
#define DLL_NAME L"vga" // Name of the DLL in UNICODE
|
|
#define STANDARD_DEBUG_PREFIX "Vga risc: " // All debug output is prefixed
|
|
#define ALLOC_TAG 'rgvD' // Four byte tag (characters in
|
|
// reverse order) used for memory
|
|
// allocations
|
|
// eVb: 3.2 [END]
|
|
|
|
// eVb: 3.3 [VGARISC Change] - Add new macros for VGA usage
|
|
//
|
|
// Each pixel in 4BPP being a nibble, the color data for that pixel is thus
|
|
// located at the xth bit within the nibble, where x is the plane number [0-3].
|
|
// Each nibble being 4 bytes, the color data is thus at the (nibble * 4 + x).
|
|
// That color data is then taken from its linear position and shifted to the
|
|
// correct position within the 16-bit planar buffer word.
|
|
//
|
|
#define VAL(data, px, pl, pos) ((data) >> (((px) * 4) + (pl)) & 1) << (pos)
|
|
|
|
//
|
|
// This figures out which pixel in the planar word data corresponds to which pixel
|
|
// in the 4BPP linear data.
|
|
//
|
|
#define SET_PLANE_DATA(x, y, a, b) \
|
|
(x) |= VAL(y, (((-1 + ((((b) % 8) % 2) << 1) - (((b) % 8) + 1) + 8))), a, b)
|
|
|
|
/* Alignment Macros */
|
|
#define ALIGN_DOWN_BY(size, align) \
|
|
((ULONG_PTR)(size) & ~((ULONG_PTR)(align) - 1))
|
|
|
|
#define ALIGN_UP_BY(size, align) \
|
|
(ALIGN_DOWN_BY(((ULONG_PTR)(size) + align - 1), align))
|
|
// eVb: 3.3 [END]
|