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141 lines
4.1 KiB
141 lines
4.1 KiB
/************************************************************************/
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/* */
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/* VDPTOCRT.C */
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/* */
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/* Copyright (c) 1993, ATI Technologies Incorporated. */
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/************************************************************************/
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/********************** PolyTron RCS Utilities
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$Revision: 1.8 $
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$Date: 20 Jul 1995 18:03:48 $
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$Author: mgrubac $
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$Log: S:/source/wnt/ms11/miniport/vcs/vdptocrt.c $
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*
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* Rev 1.8 20 Jul 1995 18:03:48 mgrubac
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* Added support for VDIF files.
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*
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* Rev 1.7 02 Jun 1995 14:34:28 RWOLFF
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* Switched from toupper() to UpperCase(), since toupper() led to unresolved
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* externals on some platforms.
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*
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* Rev 1.6 08 Mar 1995 11:35:52 ASHANMUG
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* Cleaned-up Warnings
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*
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* Rev 1.5 31 Aug 1994 16:33:38 RWOLFF
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* Now gets resolution definitions from ATIMP.H.
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*
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* Rev 1.4 19 Aug 1994 17:15:14 RWOLFF
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* Added support for non-standard pixel clock generators.
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*
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* Rev 1.3 22 Mar 1994 15:39:12 RWOLFF
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* Workaround for abs() not working properly.
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*
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* Rev 1.2 03 Mar 1994 12:38:46 ASHANMUG
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*
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* Rev 1.0 31 Jan 1994 11:24:14 RWOLFF
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* Initial revision.
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Rev 1.1 05 Nov 1993 13:34:12 RWOLFF
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Fixed "Hang on read from file" bug.
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Rev 1.0 16 Aug 1993 13:21:32 Robert_Wolff
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Initial revision.
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Rev 1.2 24 Jun 1993 14:30:12 RWOLFF
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Microsoft-originated change: added #include statements for additional
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NT-supplied headers which are needed in build 47x of NT
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Rev 1.1 04 May 1993 16:52:14 RWOLFF
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Switched from floating point calculations to long integer calculations due
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to lack of floating point support in Windows NT kernel-mode code.
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Rev 1.0 30 Apr 1993 16:45:18 RWOLFF
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Initial revision.
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End of PolyTron RCS section *****************/
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#ifdef DOC
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VDPTOCRT.C - Source file for Windows NT function to return a table of
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register values for setting a requested mode. The values
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are calculated from a raw ASCII list of timing values
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following the .VDP standard. The entry point to this module
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is the function "VdpToCrt" found at the end of the file.
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Written by Bill Hopkins
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#endif
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// COMPILER INCLUDES
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <math.h>
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// NT INCLUDES
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#include "dderror.h"
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#include "devioctl.h"
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#include "miniport.h"
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#include "ntddvdeo.h"
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#include "video.h"
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// APPLICATION INCLUDES
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#define INCLUDE_VDPDATA
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#define INCLUDE_VDPTOCRT
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#include "stdtyp.h"
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#include "amach1.h"
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#include "atimp.h"
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#include "cvtvga.h"
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#include "services.h"
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#include "vdptocrt.h"
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#include "vdpdata.h"
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/*
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* STATIC VARIABLES
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*/
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static long MaxHorz,MaxVert; // used to record maximum resolution
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static unsigned long MaxRate; // used to record maximum vert scan rate
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/*
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* FUNCTION PROTYPES
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*/
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/*
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* Allow miniport to be swapped out when not needed.
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*/
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#if defined (ALLOC_PRAGMA)
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#pragma alloc_text(PAGE_COM, normal_to_skip2)
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#endif
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/*
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*****************************************************************************
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*/
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/*
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* long normal_to_skip2(normal_number);
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*
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* long normal_number; Number to be converted
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*
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* Convert a number into either skip_1_2 or skip_2 representation.
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* Representation chosen depends on global skip1, which is nonzero
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* if skip_1_2 is desired and zero if skip_2 is desired.
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*
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* Returns
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* Number converted into desired representation
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*/
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long normal_to_skip2(long normal_number)
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{
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if (skip1)
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return (((normal_number << 2) & 0xFFF8) | (normal_number & 0x1));
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else
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return (((normal_number << 1) & 0xFFF8) | (normal_number & 0x3));
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} /* end normal_to_skip2() */
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