97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/xf4bpp/vgaVideo.h,v 1.1.2.1 1998/06/27 14:48:54 dawes Exp $ */
|
|
/*
|
|
* Copyright IBM Corporation 1987,1988,1989
|
|
*
|
|
* All Rights Reserved
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software and its
|
|
* documentation for any purpose and without fee is hereby granted,
|
|
* provided that the above copyright notice appear in all copies and that
|
|
* both that copyright notice and this permission notice appear in
|
|
* supporting documentation, and that the name of IBM not be
|
|
* used in advertising or publicity pertaining to distribution of the
|
|
* software without specific, written prior permission.
|
|
*
|
|
* IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
|
|
* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
|
|
* IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
|
|
* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
|
|
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
|
|
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
* SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
/* $XConsortium: vgaVideo.h /main/4 1996/02/21 17:59:14 kaleb $ */
|
|
|
|
#ifdef HAVE_XORG_CONFIG_H
|
|
#include <xorg-config.h>
|
|
#endif
|
|
|
|
#include "misc.h" /* GJA -- for pointer data type */
|
|
#ifdef lint
|
|
#if defined(volatile)
|
|
#undef volatile
|
|
#endif
|
|
#define volatile /**/
|
|
#if defined(const)
|
|
#undef const
|
|
#endif
|
|
#define const /**/
|
|
#if defined(signed)
|
|
#undef signed
|
|
#endif
|
|
#define signed /**/
|
|
#endif
|
|
|
|
/*
|
|
* References to all pc ( i.e. '286 ) memory in the
|
|
* regions used by the [ev]ga server ( the 128K windows )
|
|
* MUST be long-word ( i.e. 32-bit ) reads or writes.
|
|
* This definition will change for other memory architectures
|
|
* ( e.g. AIX-Rt )
|
|
*/
|
|
typedef unsigned char VideoAdapterObject ;
|
|
typedef volatile VideoAdapterObject *VideoMemoryPtr ;
|
|
typedef volatile VideoAdapterObject *VgaMemoryPtr ;
|
|
#if !defined(BITMAP_BIT_ORDER)
|
|
#define BITMAP_BIT_ORDER MSBFirst
|
|
#endif
|
|
|
|
#if !defined(IMAGE_BYTE_ORDER)
|
|
#define IMAGE_BYTE_ORDER LSBFirst
|
|
#endif
|
|
|
|
/* Bit Ordering Macros */
|
|
#if !defined(SCRLEFT8)
|
|
#define SCRLEFT8(lw, n) ( (unsigned char) (((unsigned char) lw) << (n)) )
|
|
#endif
|
|
#if !defined(SCRRIGHT8)
|
|
#define SCRRIGHT8(lw, n) ( (unsigned char) (((unsigned char)lw) >> (n)) )
|
|
#endif
|
|
/* These work ONLY on 8-bit wide Quantities !! */
|
|
#define LeftmostBit ( SCRLEFT8( 0xFF, 7 ) & 0xFF )
|
|
#define RightmostBit ( SCRRIGHT8( 0xFF, 7 ) & 0xFF )
|
|
|
|
/*
|
|
* [ev]ga video screen defines & macros
|
|
*/
|
|
#define VGA_BLACK_PIXEL 0
|
|
#define VGA_WHITE_PIXEL 1
|
|
|
|
#define VGA_MAXPLANES 4
|
|
#define VGA_ALLPLANES 0xFL
|
|
|
|
#define VIDBASE(pDraw) ((volatile unsigned char *) \
|
|
(((PixmapPtr)(((DrawablePtr)(pDraw))->pScreen->devPrivate))-> \
|
|
devPrivate.ptr))
|
|
#define BYTES_PER_LINE(pDraw) \
|
|
((int)((PixmapPtr)(((DrawablePtr)(pDraw))->pScreen->devPrivate))->devKind)
|
|
|
|
#define ROW_OFFSET( x ) ( ( x ) >> 3 )
|
|
#define BIT_OFFSET( x ) ( ( x ) & 0x7 )
|
|
#define SCREENADDRESS( pWin, x, y ) \
|
|
( VIDBASE(pWin) + (y) * BYTES_PER_LINE(pWin) + ROW_OFFSET(x) )
|
|
|
|
|