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/*****************************************************************************\
htmtxhi.cpp : Implimentation for Multilevel (HiFipe) dither matrix
Copyright (c) 1994 - 2001, Hewlett-Packard Co.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of Hewlett-Packard nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PATENT INFRINGEMENT; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\*****************************************************************************/
//===========================================================================
//
// Filename : HTMTXHI.CPP
//
// Module : Interlaken
//
// Description : Multilevel(HiFipe) dither matrix based halftoning
//
//============================================================================
//=============================================================================
// Header file dependencies
//=============================================================================
/*
#ifndef INCLUDED_HPENVTYP
#include "HPEnvTyp.h"
#endif
#ifndef INCLUDED_HTINTF
#include "HTIntf.h"
#endif
#ifndef INCLUDED_HTWORLD
#include "HTWorld.h"
#endif
#ifndef INCLUDED_HPASSERT
#include "HPAssert.h"
#endif
#ifndef INCLUDED_HTMATRIX
#include "htmatrix.h"
#endif
*/
#include "header.h"
#include "halftoner.h"
APDK_BEGIN_NAMESPACE
#define Dither4LevelHiFipe(matrix,bitMask)\
{\
tone = (*inputPtr++ );\
fedResPtr = fedResTbl + (tone << 2);\
level = *fedResPtr++;\
if (*(fedResPtr) >= (HPByte)matrix )\
{\
level++;\
}\
switch (level)\
{\
case 0:\
break;\
case 1:\
rasterByte1 |= bitMask;\
break;\
case 2:\
rasterByte2 |= bitMask;\
break;\
case 3:\
rasterByte2 |= bitMask; rasterByte1 |= bitMask;\
break;\
case 4:\
rasterByte3 |= bitMask;\
break;\
case 5:\
rasterByte3 |= bitMask; rasterByte1 |= bitMask;\
break;\
case 6:\
rasterByte3 |= bitMask; rasterByte2 |= bitMask;\
break;\
case 7:\
rasterByte3 |= bitMask; rasterByte2 |= bitMask; rasterByte1 |= bitMask;\
break;\
}\
}
// Each dither matrix has a header of five bytes
// 1st byte (Size (in bytes) of row in the matrix) - 1
// 2nd byte Size (in bytes) of row in the matrix
// 3rd byte Black offset
// 4th byte Cyan offset
// 5th byte Magenta offset
//
// With matrix actually starting on the 6th Byte.
//
// Black, cyan, and magenta are all offset into different
// locations in the dither matrix. (Yellow uses the same offsets as
// magenta)
//
// Ditherparms should be set up as Fed with the following additions
// ditherParms->fSqueezeOffset = first dirty pixel, if white has been skipped at the beginning of the row
// ditherParmsPtr->fMatrixRowSize = Byte 2 of the Header
// ditherParmsPtr->fDitherCellOffset = Black, Cyan, or Magenta Offset respectively
// To select the right row of the matrix for each color
//
// ditherParms->fMatrixV1 = ((matrixStart + rasterIndex + DitherCellOffset) % (MatrixRowSize)) * (MatrixRowSize)
DRIVER_ERROR Halftoner::HTMATRIXHI_KCMY (THTDitherParmsPtr ditherParmsPtr,
HPUInt16 count)
{
#if HPUNUSEDVAR
#pragma unused(envP1)
#endif
THTDitherParmsPtr ditherParms = ditherParmsPtr+count;
HPByte tone;
HPUInt8 rasterByte1,rasterByte2, rasterByte3;
HPUInt8 level;
HPInt16 pixelCount;
HPUInt16 numLoop = ditherParms->fNumPix;
HPBytePtr inputPtr = ditherParms->fInput;
HPBytePtr outputPtr1, outputPtr2, outputPtr3;
HPBytePtr fedResTbl = (HPBytePtr)ditherParms->fFEDResPtr;
HPBytePtr fedResPtr;
HPBytePtr matrixV = ditherParms->fMatrixV1;
HPBytePtr matrixH;
HPUInt16 index;
HPUInt16 matrixRowSize = ditherParms->fMatrixRowSize;
rasterByte1 = 0;
rasterByte2 = 0;
rasterByte3 = 0;
outputPtr1 = ditherParms->fOutput1;
outputPtr2 = ditherParms->fOutput2;
outputPtr3 = ditherParms->fOutput3;
if (!ditherParms->fSymmetricFlag)
return SYSTEM_ERROR; // matrixHI_KCMY asymetric not supported
index = (ditherParms->fDitherCellOffset + ditherParms->fSqueezeOffset) % (matrixRowSize);
matrixH = matrixV + index;
for (pixelCount = numLoop + 8; (pixelCount -= 8) > 0; )
{
// if we've reached end of matrix we need to reset
// our row pointer to the start of the row
if ( index == matrixRowSize )
{
matrixH = matrixV;
index = 0;
}
Dither4LevelHiFipe(*matrixH,0x80);
matrixH++;
Dither4LevelHiFipe(*matrixH,0x40);
matrixH++;
Dither4LevelHiFipe(*matrixH,0x20);
matrixH++;
Dither4LevelHiFipe(*matrixH,0x10);
matrixH++;
Dither4LevelHiFipe(*matrixH,0x08);
matrixH++;
Dither4LevelHiFipe(*matrixH,0x04);
matrixH++;
Dither4LevelHiFipe(*matrixH,0x02);
matrixH++;
Dither4LevelHiFipe(*matrixH,0x01);
matrixH++;
*outputPtr1++ |= rasterByte1;
if (outputPtr2)
*outputPtr2++ |= rasterByte2;
rasterByte1 = 0;
rasterByte2 = 0;
index += 8;
}
return NO_ERROR;
}
unsigned char BayerMatrix[] =
{
0x07, 0x08, 0x00, 0x00, 0x00,
0x2, 0x82, 0x22, 0xa2, 0xa, 0x8a, 0x2a, 0xaa,
0xc2, 0x42, 0xe2, 0x62, 0xca, 0x4a, 0xea, 0x6a,
0x32, 0xb2, 0x12, 0x92, 0x3a, 0xba, 0x1a, 0x9a,
0xf2, 0x72, 0xd2, 0x52, 0xfa, 0x7a, 0xda, 0x5a,
0xe, 0x8e, 0x2e, 0xae, 0x6, 0x86, 0x26, 0xa6,
0xce, 0x4e, 0xee, 0x6e, 0xc6, 0x46, 0xe6, 0x66,
0x3e, 0xbe, 0x1e, 0x9e, 0x36, 0xb6, 0x16, 0x96,
0xfe, 0x7e, 0xde, 0x5e, 0xf6, 0x76, 0xd6, 0x56,
};
APDK_END_NAMESPACE
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