2003-09-23 07:10:53 +00:00
|
|
|
|
/*.............................................................................
|
2003-09-24 14:08:01 +00:00
|
|
|
|
* Project : SANE library for Plustek parallelport flatbed scanners.
|
2003-09-23 07:10:53 +00:00
|
|
|
|
*.............................................................................
|
2003-09-24 14:08:01 +00:00
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/* @file plustek-pp_map.c
|
|
|
|
|
* @brief functions to create and manipulate lookup tables.
|
2003-09-23 07:10:53 +00:00
|
|
|
|
*
|
|
|
|
|
* based on sources acquired from Plustek Inc.
|
|
|
|
|
* Copyright (C) 1998 Plustek Inc.
|
|
|
|
|
* Copyright (C) 2000-2003 Gerhard Jaeger <gerhard@gjaeger.de>
|
|
|
|
|
* also based on the work done by Rick Bronson
|
|
|
|
|
*
|
2003-09-24 14:08:01 +00:00
|
|
|
|
* History:
|
|
|
|
|
* - 0.30 - initial version
|
|
|
|
|
* - 0.31 - brightness and contrast is working (see mapAdjust)
|
|
|
|
|
* - 0.32 - no changes
|
|
|
|
|
* - 0.33 - disabled a few functions
|
|
|
|
|
* - 0.34 - added new dither matrix for checking
|
|
|
|
|
* - 0.35 - no changes
|
|
|
|
|
* - 0.36 - activated Dithermap 1
|
|
|
|
|
* - removed some unused functions
|
|
|
|
|
* - added additional SCANDEF_Inverse check to MapSetupDither()
|
|
|
|
|
* - fixed the double inversion bug, the map always compensates
|
|
|
|
|
* - the scanner hw-settings
|
|
|
|
|
* - 0.37 - code cleanup
|
|
|
|
|
* - 0.38 - added P12 stuff
|
|
|
|
|
* - 0.39 - no changes
|
|
|
|
|
* - 0.40 - no changes
|
|
|
|
|
* - 0.41 - no changes
|
|
|
|
|
* - 0.42 - made MapAdjust global
|
|
|
|
|
* - changed include names
|
|
|
|
|
* .
|
|
|
|
|
* <hr>
|
|
|
|
|
* This file is part of the SANE package.
|
2003-09-23 07:10:53 +00:00
|
|
|
|
*
|
2003-09-24 14:08:01 +00:00
|
|
|
|
* This program is free software; you can redistribute it and/or
|
|
|
|
|
* modify it under the terms of the GNU General Public License as
|
|
|
|
|
* published by the Free Software Foundation; either version 2 of the
|
|
|
|
|
* License, or (at your option) any later version.
|
2003-09-23 07:10:53 +00:00
|
|
|
|
*
|
2003-09-24 14:08:01 +00:00
|
|
|
|
* This program is distributed in the hope that it will be useful, but
|
|
|
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
|
* General Public License for more details.
|
2003-09-23 07:10:53 +00:00
|
|
|
|
*
|
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
|
* along with this program; if not, write to the Free Software
|
2003-09-24 14:08:01 +00:00
|
|
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
|
|
|
|
* MA 02111-1307, USA.
|
|
|
|
|
*
|
|
|
|
|
* As a special exception, the authors of SANE give permission for
|
|
|
|
|
* additional uses of the libraries contained in this release of SANE.
|
|
|
|
|
*
|
|
|
|
|
* The exception is that, if you link a SANE library with other files
|
|
|
|
|
* to produce an executable, this does not by itself cause the
|
|
|
|
|
* resulting executable to be covered by the GNU General Public
|
|
|
|
|
* License. Your use of that executable is in no way restricted on
|
|
|
|
|
* account of linking the SANE library code into it.
|
|
|
|
|
*
|
|
|
|
|
* This exception does not, however, invalidate any other reasons why
|
|
|
|
|
* the executable file might be covered by the GNU General Public
|
|
|
|
|
* License.
|
|
|
|
|
*
|
|
|
|
|
* If you submit changes to SANE to the maintainers to be included in
|
|
|
|
|
* a subsequent release, you agree by submitting the changes that
|
|
|
|
|
* those changes may be distributed with this exception intact.
|
|
|
|
|
*
|
|
|
|
|
* If you write modifications of your own for SANE, it is your choice
|
|
|
|
|
* whether to permit this exception to apply to your modifications.
|
|
|
|
|
* If you do not wish that, delete this exception notice.
|
|
|
|
|
* <hr>
|
2003-09-23 07:10:53 +00:00
|
|
|
|
*/
|
|
|
|
|
#include "plustek-pp_scan.h"
|
|
|
|
|
|
|
|
|
|
/*************************** local vars **************************************/
|
|
|
|
|
|
|
|
|
|
/*WORK:
|
|
|
|
|
* create other thresholds for the dither maps
|
|
|
|
|
*/
|
|
|
|
|
static Byte mapDitherMatrix0[_DITHERSIZE] =
|
|
|
|
|
{
|
|
|
|
|
0, 32, 8, 40, 2, 34, 10, 42,
|
|
|
|
|
48, 16, 56, 24, 50, 18, 58, 26,
|
|
|
|
|
12, 44, 4, 36, 14, 46, 6, 38,
|
|
|
|
|
60, 28, 52, 20, 62, 30, 54, 22,
|
|
|
|
|
3, 35, 11, 43, 1, 33, 9, 41,
|
|
|
|
|
51, 19, 59, 27, 49, 17, 57, 25,
|
|
|
|
|
15, 47, 7, 39, 13, 45, 5, 37,
|
|
|
|
|
63, 31, 55, 23, 61, 29, 53, 21
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static Byte mapDitherMatrix1[_DITHERSIZE] =
|
|
|
|
|
{
|
|
|
|
|
2, 60, 16, 56, 3, 57, 13, 53,
|
|
|
|
|
34, 18, 48, 32, 35, 19, 45, 29,
|
|
|
|
|
10, 50, 6, 63, 11, 51, 7, 61,
|
|
|
|
|
42, 26, 38, 22, 43, 27, 39, 23,
|
|
|
|
|
4, 58, 14, 54, 1, 59, 15, 55,
|
|
|
|
|
36, 20, 46, 30, 33, 17, 47, 31,
|
|
|
|
|
12, 52, 8, 62, 9, 49, 5, 63,
|
|
|
|
|
44, 28, 40, 24, 41, 25, 37, 21
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/*************************** local functions *********************************/
|
|
|
|
|
|
|
|
|
|
/** set the selected dither maps...
|
|
|
|
|
*/
|
|
|
|
|
static void mapSetDitherMap( pScanData ps )
|
|
|
|
|
{
|
|
|
|
|
ULong i;
|
|
|
|
|
pUChar pDitherSource;
|
|
|
|
|
pUChar pDither = ps->a_bDitherPattern;
|
|
|
|
|
|
|
|
|
|
if( 0 == ps->DataInf.wDither ) {
|
|
|
|
|
DBG( DBG_LOW, "Using Dithermatrix 0\n" );
|
|
|
|
|
pDitherSource = mapDitherMatrix0;
|
|
|
|
|
} else {
|
|
|
|
|
DBG( DBG_LOW, "Using Dithermatrix 1\n" );
|
|
|
|
|
pDitherSource = mapDitherMatrix1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
for( i = 0; i < _DITHERSIZE; i++ ) {
|
|
|
|
|
pDither[i] = pDitherSource[i];
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** nothing more to say
|
|
|
|
|
*/
|
|
|
|
|
static void mapInvertMap( pScanData ps )
|
|
|
|
|
{
|
|
|
|
|
pULong pdw;
|
|
|
|
|
ULong dw, size;
|
|
|
|
|
|
|
|
|
|
DBG( DBG_LOW, "mapInvertMap()\n" );
|
|
|
|
|
|
|
|
|
|
if( _IS_ASIC98(ps->sCaps.AsicID)) {
|
|
|
|
|
size = 4096;
|
|
|
|
|
} else {
|
|
|
|
|
size = 256;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
for (pdw = (pULong)ps->a_bMapTable, dw = size * 3 / 4; dw; dw--, pdw++) {
|
|
|
|
|
*pdw = ~(*pdw);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** as the name says...
|
|
|
|
|
*/
|
|
|
|
|
static void mapInvertDitherMap( pScanData ps )
|
|
|
|
|
{
|
|
|
|
|
if( ps->DataInf.dwScanFlag & SCANDEF_Inverse ) {
|
|
|
|
|
|
|
|
|
|
ULong dw;
|
|
|
|
|
pULong pDither = (pULong)ps->a_bDitherPattern;
|
|
|
|
|
|
|
|
|
|
DBG( DBG_LOW, "mapInvertDitherMap()\n" );
|
|
|
|
|
|
|
|
|
|
mapInvertMap( ps );
|
|
|
|
|
for (dw = 0; dw < 16; dw++) {
|
|
|
|
|
pDither[dw] = ~pDither[dw];
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** build linear map...
|
|
|
|
|
*/
|
|
|
|
|
static void mapBuildLinearMap( pScanData ps )
|
|
|
|
|
{
|
|
|
|
|
ULong i;
|
|
|
|
|
|
|
|
|
|
DBG( DBG_LOW, "mapBuildLinearMap()\n" );
|
|
|
|
|
|
|
|
|
|
if( _IS_ASIC98(ps->sCaps.AsicID)) {
|
|
|
|
|
|
|
|
|
|
for( i = 0; i < 4096; i++ ) {
|
|
|
|
|
ps->a_bMapTable[i] = (UChar)(i >> 4);
|
|
|
|
|
ps->a_bMapTable[4096+i] = (UChar)(i >> 4);
|
|
|
|
|
ps->a_bMapTable[8192+i] = (UChar)(i >> 4);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
for( i = 0; i < 256; i++ ) {
|
|
|
|
|
ps->a_bMapTable[i] = (UChar)(i & 0xff);
|
|
|
|
|
ps->a_bMapTable[256+i] = (UChar)(i & 0xff);
|
|
|
|
|
ps->a_bMapTable[512+i] = (UChar)(i & 0xff);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/************************ exported functions *********************************/
|
|
|
|
|
|
|
|
|
|
/** create a mapping table
|
|
|
|
|
* in the original code this map will be created by the TWAIN application
|
|
|
|
|
* and the is being downloaded to the driver, as I don't have the code
|
|
|
|
|
* we have to try to build up such a table here
|
|
|
|
|
*/
|
2003-09-24 14:08:01 +00:00
|
|
|
|
_LOC void MapInitialize( pScanData ps )
|
2003-09-23 07:10:53 +00:00
|
|
|
|
{
|
|
|
|
|
mapBuildLinearMap( ps );
|
|
|
|
|
MapAdjust( ps, _MAP_MASTER );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** setup dither maps
|
|
|
|
|
*/
|
2003-09-24 14:08:01 +00:00
|
|
|
|
_LOC void MapSetupDither( pScanData ps )
|
2003-09-23 07:10:53 +00:00
|
|
|
|
{
|
|
|
|
|
DBG( DBG_LOW, "MapSetupDither() - %u\n", ps->DataInf.wAppDataType );
|
|
|
|
|
|
|
|
|
|
if( COLOR_HALFTONE == ps->DataInf.wAppDataType ) {
|
|
|
|
|
|
|
|
|
|
mapSetDitherMap( ps );
|
|
|
|
|
if (ps->DataInf.dwScanFlag & SCANDEF_Inverse)
|
|
|
|
|
mapInvertDitherMap( ps );
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/** adjust acording to brightness and contrast
|
|
|
|
|
*/
|
2003-09-24 14:08:01 +00:00
|
|
|
|
_LOC void MapAdjust( pScanData ps, int which )
|
2003-09-23 07:10:53 +00:00
|
|
|
|
{
|
|
|
|
|
ULong i, tabLen;
|
|
|
|
|
pULong pdw;
|
|
|
|
|
double b, c, dw, tmp;
|
|
|
|
|
|
|
|
|
|
DBG( DBG_LOW, "MapAdjust(%u)\n", which );
|
|
|
|
|
|
|
|
|
|
if( _IS_ASIC98(ps->sCaps.AsicID)) {
|
|
|
|
|
tabLen = 4096;
|
|
|
|
|
} else {
|
|
|
|
|
tabLen = 256;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* adjust brightness (b) and contrast (c) using the function:
|
|
|
|
|
*
|
|
|
|
|
* s<EFBFBD>(x,y) = (s(x,y) + b) * c
|
|
|
|
|
* b = [-127, 127]
|
|
|
|
|
* c = [0,2]
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* scale brightness and contrast...
|
|
|
|
|
*/
|
|
|
|
|
b = ((double)ps->wBrightness * 192.0)/100.0;
|
|
|
|
|
c = ((double)ps->wContrast + 100.0)/100.0;
|
|
|
|
|
|
|
|
|
|
DBG( DBG_LOW, "brightness = %i -> %i\n", ps->wBrightness, (UChar)b);
|
|
|
|
|
DBG( DBG_LOW, "contrast*100 = %i -> %i\n", ps->wContrast, (int)(c*100));
|
|
|
|
|
|
|
|
|
|
for( i = 0; i < tabLen; i++ ) {
|
|
|
|
|
|
|
|
|
|
if((_MAP_MASTER == which) || (_MAP_RED == which)) {
|
|
|
|
|
tmp = ((double)(ps->a_bMapTable[i] + b)) * c;
|
|
|
|
|
if( tmp < 0 ) tmp = 0;
|
|
|
|
|
if( tmp > 255 ) tmp = 255;
|
|
|
|
|
ps->a_bMapTable[i] = (UChar)tmp;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if((_MAP_MASTER == which) || (_MAP_GREEN == which)) {
|
|
|
|
|
tmp = ((double)(ps->a_bMapTable[tabLen+i] + b)) * c;
|
|
|
|
|
if( tmp < 0 ) tmp = 0;
|
|
|
|
|
if( tmp > 255 ) tmp = 255;
|
|
|
|
|
ps->a_bMapTable[tabLen+i] = (UChar)tmp;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if((_MAP_MASTER == which) || (_MAP_BLUE == which)) {
|
|
|
|
|
tmp = ((double)(ps->a_bMapTable[tabLen*2+i] + b)) * c;
|
|
|
|
|
if( tmp < 0 ) tmp = 0;
|
|
|
|
|
if( tmp > 255 ) tmp = 255;
|
|
|
|
|
ps->a_bMapTable[tabLen*2+i] = (UChar)tmp;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if( ps->DataInf.dwScanFlag & SCANDEF_Negative ) {
|
|
|
|
|
DBG( DBG_LOW, "inverting...\n" );
|
|
|
|
|
|
|
|
|
|
if((_MAP_MASTER == which) || (_MAP_RED == which)) {
|
|
|
|
|
|
|
|
|
|
DBG( DBG_LOW, "inverting RED map\n" );
|
|
|
|
|
|
|
|
|
|
pdw = (pULong)ps->a_bMapTable;
|
|
|
|
|
|
|
|
|
|
for( dw = tabLen / 4; dw; dw--, pdw++ )
|
|
|
|
|
*pdw = ~(*pdw);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if((_MAP_MASTER == which) || (_MAP_GREEN == which)) {
|
|
|
|
|
|
|
|
|
|
DBG( DBG_LOW, "inverting GREEN map\n" );
|
|
|
|
|
|
|
|
|
|
pdw = (pULong)&ps->a_bMapTable[tabLen];
|
|
|
|
|
|
|
|
|
|
for( dw = tabLen / 4; dw; dw--, pdw++ )
|
|
|
|
|
*pdw = ~(*pdw);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if((_MAP_MASTER == which) || (_MAP_BLUE == which)) {
|
|
|
|
|
|
|
|
|
|
DBG( DBG_LOW, "inverting BLUE map\n" );
|
|
|
|
|
|
|
|
|
|
pdw = (pULong)&ps->a_bMapTable[tabLen*2];
|
|
|
|
|
|
|
|
|
|
for( dw = tabLen / 4; dw; dw--, pdw++ )
|
|
|
|
|
*pdw = ~(*pdw);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* END PLUSTEK-PP_MAP.C .....................................................*/
|