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sane-project-backends/backend/plustek-usbshading.c

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77 KiB
C
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/*.............................................................................
* Project : SANE library for Plustek flatbed scanners.
*.............................................................................
*/
/** @file plustek-usbshading.c
* @brief Calibration routines.
*
* Based on sources acquired from Plustek Inc.<br>
* Copyright (C) 2001-2003 Gerhard Jaeger <gerhard@gjaeger.de>
*
* History:
* - 0.40 - starting version of the USB support
* - 0.41 - minor fixes
* - added workaround stuff for EPSON1250
* - 0.42 - added workaround stuff for UMAX 3400
* - 0.43 - added call to usb_switchLamp before reading dark data
* - 0.44 - added more debug output and bypass calibration
* - added dump of shading data
* - 0.45 - added coarse calibration for CIS devices
* - added _WAF_SKIP_FINE to skip the results of fine calibration
* - CanoScan fixes and fine-tuning
* - 0.46 - CanoScan will now be calibrated by code in plustek-usbcal.c
* - added functions to save and restore calibration data from a file
* - fixed some TPA issues
* .
* <hr>
* This file is part of the SANE package.
*
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* 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>
*/
/************** global stuff - I hate it, but we need it... ******************/
#define _MAX_GAIN_LOOPS 10 /**< max number of loops for coarse calibration */
#define _MAX_SHAD 0x4000
#define _SHADING_BUF (_MAX_SHAD*3) /**< max size of the shading buffer */
#define _CIS_GAIN 0
#define _CIS_OFFS 6
static u_short a_wWhiteShading[_SHADING_BUF] = {0};
static u_short a_wDarkShading[_SHADING_BUF] = {0};
/************************** static variables *********************************/
static RGBUShortDef Gain_Hilight;
static RGBUShortDef Gain_NegHilight;
static RGBByteDef Gain_Reg;
static u_long m_dwPixels;
static u_long dwPos;
static u_char *pScanBuffer;
static pScanParam pParam;
static ScanParam m_ScanParam;
static u_long m_dwIdealGain;
static pRGBUShortDef m_pAvColor;
static u_short *m_pAvMono;
static u_long *m_pSum;
static double dMCLK, dExpect, dMax;
static double dMCLK_ADF;
static double dRed, dGreen, dBlue;
static u_short m_wHilight = 4 /*0*/; /* check the windows registry... */
static u_short m_wShadow = 4 /*0*/; /* check the windows registry... */
/**
*/
static void usb_line_statistics( char *cmt, u_short* buf,
u_long dim_x, SANE_Bool color )
{
int i, end;
u_long dw, imad, imid, alld, cld, cud;
u_short mid, mad, aved, lbd, ubd, tmp;
pMonoWordDef pvd, pvd2;
pvd = pvd2 = (pMonoWordDef)buf;
if( color )
end = 3;
else
end = 1;
for( i = 0; i < end; i++ ) {
mid = 0xFFFF;
mad = 0;
imid = 0;
imad = 0;
alld = 0;
cld = 0;
cud = 0;
for( dw = 0; dw < dim_x; pvd++, dw++ ) {
tmp = _LOBYTE(pvd->Mono) * 256 + _HIBYTE(pvd->Mono);
if( tmp > mad ) {
mad = tmp;
imad = dw;
}
if( tmp < mid ) {
mid = tmp;
imid = dw;
}
alld += tmp;
}
aved = (u_short)(alld/dim_x);
lbd = aved - 0.05*aved;
ubd = aved + 0.05*aved;
for( dw = 0; dw < dim_x; pvd2++, dw++ ) {
tmp = _LOBYTE(pvd2->Mono) * 256 + _HIBYTE(pvd2->Mono);
if( tmp > ubd ) {
cud++;
} else if( tmp < lbd ) {
cld++;
}
}
DBG( _DBG_INFO2, "Color[%u] (%s) : "
"min=%u(%lu) max=%u(%lu) ave=%u\n",
i, cmt, mid, imid, mad, imad, aved);
DBG( _DBG_INFO2, "5%%: %u (%lu), %u (%lu)\n", lbd, cld,ubd,cud);
}
}
/** usb_SetMCLK
* get the MCLK out of our table
*/
static void usb_SetMCLK( pPlustek_Device dev, pScanParam pParam )
{
int idx, i;
pClkMotorDef clk;
pHWDef hw = &dev->usbDev.HwSetting;
clk = usb_GetMotorSet( hw->motorModel );
idx = 0;
for( i = 0; i < _MAX_CLK; i++ ) {
if( pParam->PhyDpi.x <= dpi_ranges[i] )
break;
idx++;
}
if( idx >= _MAX_CLK )
idx = _MAX_CLK - 1;
if( pParam->bDataType != SCANDATATYPE_Color ) {
if( pParam->bBitDepth > 8 )
dMCLK = clk->gray_mclk_16[idx];
else
dMCLK = clk->gray_mclk_8[idx];
} else {
if( pParam->bBitDepth > 8 )
dMCLK = clk->color_mclk_16[idx];
else
dMCLK = clk->color_mclk_8[idx];
}
pParam->dMCLK = dMCLK;
DBG( _DBG_INFO, "SETMCLK[%u/%u], using entry %u: %f, %u\n",
hw->motorModel, pParam->bDataType, idx, dMCLK, pParam->PhyDpi.x );
}
/** usb_SetDarkShading
* download the dark shading data to Merlins' DRAM
*/
static SANE_Bool usb_SetDarkShading( int fd, u_char channel,
void *lpCoeff, u_short wCount )
{
int res;
a_bRegs[0x03] = 0;
if( channel == CHANNEL_green )
a_bRegs[0x03] |= 4;
else
if( channel == CHANNEL_blue )
a_bRegs[0x03] |= 8;
if( usbio_WriteReg( fd, 0x03, a_bRegs[0x03] )) {
/* Dataport address is always 0 for setting offset coefficient */
a_bRegs[0x04] = 0;
a_bRegs[0x05] = 0;
res = sanei_lm983x_write( fd, 0x04, &a_bRegs[0x04], 2, SANE_TRUE );
/* Download offset coefficients */
if( SANE_STATUS_GOOD == res ) {
res = sanei_lm983x_write(fd, 0x06,
(u_char*)lpCoeff, wCount, SANE_FALSE );
if( SANE_STATUS_GOOD == res )
return SANE_TRUE;
}
}
DBG( _DBG_ERROR, "usb_SetDarkShading() failed\n" );
return SANE_FALSE;
}
/** usb_SetWhiteShading
* download the white shading data to Merlins' DRAM
*/
static SANE_Bool usb_SetWhiteShading( int fd, u_char channel,
void *lpData, u_short wCount )
{
int res;
a_bRegs [0x03] = 1;
if (channel == CHANNEL_green)
a_bRegs [0x03] |= 4;
else
if (channel == CHANNEL_blue)
a_bRegs [0x03] |= 8;
if( usbio_WriteReg( fd, 0x03, a_bRegs[0x03] )) {
/* Dataport address is always 0 for setting offset coefficient */
a_bRegs[0x04] = 0;
a_bRegs[0x05] = 0;
res = sanei_lm983x_write( fd, 0x04, &a_bRegs[0x04], 2, SANE_TRUE );
/* Download offset coefficients */
if( SANE_STATUS_GOOD == res ) {
res = sanei_lm983x_write(fd, 0x06,
(u_char*)lpData, wCount, SANE_FALSE );
if( SANE_STATUS_GOOD == res )
return SANE_TRUE;
}
}
DBG( _DBG_ERROR, "usb_SetWhiteShading() failed\n" );
return SANE_FALSE;
}
/** usb_GetSoftwareOffsetGain
* preset the offset and gain parameter for fine calibration.
* Adjustment on these defaults is done for negative and transparency
* scanning...
*/
static void usb_GetSoftwareOffsetGain( pPlustek_Device dev )
{
pScanParam pParam = &dev->scanning.sParam;
pDCapsDef sCaps = &dev->usbDev.Caps;
pHWDef hw = &dev->usbDev.HwSetting;
pParam->swOffset[0] = 0;
pParam->swOffset[1] = 0;
pParam->swOffset[2] = 0;
pParam->swGain[0] = 1000;
pParam->swGain[1] = 1000;
pParam->swGain[2] = 1000;
if( pParam->bSource != SOURCE_Reflection )
return;
switch( sCaps->bCCD ) {
case kEPSON:
DBG( _DBG_INFO2, "kEPSON adjustments\n" );
#if 0
pParam->swGain[0] = 800;
pParam->swGain[1] = 800;
pParam->swGain[2] = 800;
#endif
break;
case kNECSLIM:
DBG( _DBG_INFO2, "kNECSLIM adjustments\n" );
if( pParam->PhyDpi.x <= 150 ) {
pParam->swOffset[0] = 600;
pParam->swOffset[1] = 500;
pParam->swOffset[2] = 300;
pParam->swGain[0] = 960;
pParam->swGain[1] = 970;
pParam->swGain[2] = 1000;
} else if (pParam->PhyDpi.x <= 300) {
pParam->swOffset[0] = 700;
pParam->swOffset[1] = 600;
pParam->swOffset[2] = 400;
pParam->swGain[0] = 967;
pParam->swGain[1] = 980;
pParam->swGain[2] = 1000;
} else {
pParam->swOffset[0] = 900;
pParam->swOffset[1] = 850;
pParam->swOffset[2] = 620;
pParam->swGain[0] = 965;
pParam->swGain[1] = 980;
pParam->swGain[2] = 1000;
}
break;
case kNEC8861:
DBG( _DBG_INFO2, "kNEC8861 adjustments\n" );
break;
case kCIS650:
case kCIS670:
case kCIS1220:
DBG( _DBG_INFO2, "kCIS adjustments\n" );
if(pParam->bDataType == SCANDATATYPE_Color) {
pParam->swGain[0] =
pParam->swGain[1] =
pParam->swGain[2] = 952;
pParam->swOffset[0] =
pParam->swOffset[1] =
pParam->swOffset[2] = 1000;
}
break;
case kCIS1240:
DBG( _DBG_INFO2, "kCIS1240 adjustments\n" );
if(pParam->bDataType == SCANDATATYPE_Color) {
pParam->swGain[0] = 950;
pParam->swGain[1] = 950;
pParam->swGain[2] = 900;
pParam->swOffset[0] =
pParam->swOffset[1] =
pParam->swOffset[2] = 0; /*1000;*/
}
break;
case kNEC3799:
DBG( _DBG_INFO2, "kNEC3799 adjustments\n" );
if( sCaps->bPCB == 2 ) {
if( pParam->PhyDpi.x <= 150 ) {
pParam->swOffset[0] = 600;
pParam->swOffset[1] = 500;
pParam->swOffset[2] = 300;
pParam->swGain[0] = 960;
pParam->swGain[1] = 970;
pParam->swGain[2] = 1000;
} else if (pParam->PhyDpi.x <= 300) {
pParam->swOffset[0] = 700;
pParam->swOffset[1] = 600;
pParam->swOffset[2] = 400;
pParam->swGain[0] = 967;
pParam->swGain[1] = 980;
pParam->swGain[2] = 1000;
} else {
pParam->swOffset[0] = 900;
pParam->swOffset[1] = 850;
pParam->swOffset[2] = 620;
pParam->swGain[0] = 965;
pParam->swGain[1] = 980;
pParam->swGain[2] = 1000;
}
} else if( hw->motorModel == MODEL_KaoHsiung ) {
pParam->swOffset[0] = 1950;
pParam->swOffset[1] = 1700;
pParam->swOffset[2] = 1250;
pParam->swGain[0] = 955;
pParam->swGain[1] = 950;
pParam->swGain[2] = 1000;
} else { /* MODEL_Hualien */
if( pParam->PhyDpi.x <= 300 ) {
if( pParam->bBitDepth > 8 ) {
pParam->swOffset[0] = 0;
pParam->swOffset[1] = 0;
pParam->swOffset[2] = -300;
pParam->swGain[0] = 970;
pParam->swGain[1] = 985;
pParam->swGain[2] = 1050;
} else {
pParam->swOffset[0] = -485;
pParam->swOffset[1] = -375;
pParam->swOffset[2] = -628;
pParam->swGain[0] = 970;
pParam->swGain[1] = 980;
pParam->swGain[2] = 1050;
}
} else {
if( pParam->bBitDepth > 8 ) {
pParam->swOffset[0] = 1150;
pParam->swOffset[1] = 1000;
pParam->swOffset[2] = 700;
pParam->swGain[0] = 990;
pParam->swGain[1] = 1000;
pParam->swGain[2] = 1050;
} else {
pParam->swOffset[0] = -30;
pParam->swOffset[1] = 0;
pParam->swOffset[2] = -250;
pParam->swGain[0] = 985;
pParam->swGain[1] = 995;
pParam->swGain[2] = 1050;
}
}
}
break;
case kSONY548:
DBG( _DBG_INFO2, "kSONY548 adjustments\n" );
if(pParam->bDataType == SCANDATATYPE_Color)
{
if(pParam->PhyDpi.x <= 75)
{
pParam->swOffset[0] = 650;
pParam->swOffset[1] = 850;
pParam->swOffset[2] = 500;
pParam->swGain[0] = 980;
pParam->swGain[1] = 1004;
pParam->swGain[2] = 1036;
}
else if(pParam->PhyDpi.x <= 300)
{
pParam->swOffset[0] = 700;
pParam->swOffset[1] = 900;
pParam->swOffset[2] = 550;
pParam->swGain[0] = 970;
pParam->swGain[1] = 995;
pParam->swGain[2] = 1020;
}
else if(pParam->PhyDpi.x <= 400)
{
pParam->swOffset[0] = 770;
pParam->swOffset[1] = 1010;
pParam->swOffset[2] = 600;
pParam->swGain[0] = 970;
pParam->swGain[1] = 993;
pParam->swGain[2] = 1023;
}
else
{
pParam->swOffset[0] = 380;
pParam->swOffset[1] = 920;
pParam->swOffset[2] = 450;
pParam->swGain[0] = 957;
pParam->swGain[1] = 980;
pParam->swGain[2] = 1008;
}
}
else
{
if(pParam->PhyDpi.x <= 75)
{
pParam->swOffset[1] = 1250;
pParam->swGain[1] = 950;
}
else if(pParam->PhyDpi.x <= 300)
{
pParam->swOffset[1] = 1250;
pParam->swGain[1] = 950;
}
else if(pParam->PhyDpi.x <= 400)
{
pParam->swOffset[1] = 1250;
pParam->swGain[1] = 950;
}
else
{
pParam->swOffset[1] = 1250;
pParam->swGain[1] = 950;
}
}
break;
case kNEC3778:
DBG( _DBG_INFO2, "kNEC3778 adjustments\n" );
if((_LM9831 == hw->chip) && (pParam->PhyDpi.x <= 300))
{
pParam->swOffset[0] = 0;
pParam->swOffset[1] = 0;
pParam->swOffset[2] = 0;
pParam->swGain[0] = 900;
pParam->swGain[1] = 920;
pParam->swGain[2] = 980;
}
else if( hw->motorModel == MODEL_HuaLien && pParam->PhyDpi.x > 800)
{
pParam->swOffset[0] = 0;
pParam->swOffset[1] = 0;
pParam->swOffset[2] = -200;
pParam->swGain[0] = 980;
pParam->swGain[1] = 930;
pParam->swGain[2] = 1080;
}
else
{
pParam->swOffset[0] = -304;
pParam->swOffset[1] = -304;
pParam->swOffset[2] = -304;
pParam->swGain[0] = 910;
pParam->swGain[1] = 920;
pParam->swGain[2] = 975;
}
if(pParam->bDataType == SCANDATATYPE_BW && pParam->PhyDpi.x <= 300)
{
pParam->swOffset[1] = 1000;
pParam->swGain[1] = 1000;
}
break;
}
}
/** as the name says..
*/
static void usb_Swap( u_short *pw, u_long dwBytes )
{
for( dwBytes /= 2; dwBytes--; pw++ )
_SWAP(((u_char*) pw)[0], ((u_char*)pw)[1]);
}
/** according to the pixel values,
*/
static u_char usb_GetNewGain( u_short wMax, int channel )
{
double dRatio, dAmp;
u_long dwInc, dwDec;
u_char bGain;
if( !wMax )
wMax = 1;
dAmp = 0.93 + 0.067 * a_bRegs[0x3b+channel];
if((m_dwIdealGain / (wMax / dAmp)) < 3) {
dRatio = ((double) m_dwIdealGain * dAmp / wMax - 0.93) / 0.067;
if(ceil(dRatio) > 0x3f)
return 0x3f;
dwInc = (u_long)((0.93 + ceil (dRatio) * 0.067) * wMax / dAmp);
dwDec = (u_long)((0.93 + floor (dRatio) * 0.067) * wMax / dAmp);
if((dwInc >= 0xff00) ||
(labs (dwInc - m_dwIdealGain) > labs(dwDec - m_dwIdealGain))) {
bGain = (u_char)floor(dRatio);
} else {
bGain = (u_char)ceil(dRatio);
}
if( bGain > 0x3f )
bGain = 0x3f;
return bGain;
} else {
dRatio = m_dwIdealGain / (wMax / dAmp);
dAmp = floor((dRatio / 3 - 0.93)/0.067);
if( dAmp > 31 ) {
DBG( _DBG_INFO, "Gain internally limited! (%.3f-> 31)\n", dAmp );
dAmp = 31;
}
bGain = (u_char)dAmp + 32;
return bGain;
}
}
/** limit and set register given by address
* @param gain -
* @param reg -
*/
static void setAdjGain( int gain, u_char *reg )
{
if( gain >= 0 ) {
if( gain > 0x3f )
*reg = 0x3f;
else
*reg = gain;
}
}
/**
* @param channel - 0 = red, 1 = green, 2 = blue
* @param max -
* @param ideal -
* @param l_on -
* @param l_off -
* @return
*/
static SANE_Bool adjLampSetting( int channel, u_long max, u_long ideal,
u_short l_on, u_short *l_off )
{
SANE_Bool adj = SANE_FALSE;
u_long lamp_on;
/* so if the image was too bright, we dim the lamps by 3% */
if( max > ideal ) {
lamp_on = (*l_off) - l_on;
lamp_on = (lamp_on * 97)/100;
*l_off = l_on + lamp_on;
DBG( _DBG_INFO2,
"lamp(%u) adjust (-3%%): %i %i\n", channel, l_on, *l_off );
adj = SANE_TRUE;
}
/* if the image was too dull, increase lamp by 1% */
if( a_bRegs[0x3b + channel] == 63 ) {
lamp_on = (*l_off) - l_on;
lamp_on += (lamp_on/100);
*l_off = l_on + lamp_on;
DBG( _DBG_INFO2,
"lamp(%u) adjust (+1%%): %i %i\n", channel, l_on, *l_off );
adj = SANE_TRUE;
}
return adj;
}
/** usb_AdjustGain
* function to perform the "coarse calibration step" part 1.
* We scan reference image pixels to determine the optimum coarse gain settings
* for R, G, B. (Analog gain and offset prior to ADC). These coefficients are
* applied at the line rate during normal scanning.
* The scanned line should contain a white strip with some black at the
* beginning. The function searches for the maximum value which corresponds to
* the maximum white value.
* Affects register 0x3b, 0x3c and 0x3d
*
*/
static SANE_Bool usb_AdjustGain( pPlustek_Device dev, int fNegative )
{
char tmp[40];
int i;
pScanDef scanning = &dev->scanning;
pDCapsDef scaps = &dev->usbDev.Caps;
pHWDef hw = &dev->usbDev.HwSetting;
u_long dw;
SANE_Bool fRepeatITA = SANE_TRUE;
if( usb_IsEscPressed())
return SANE_FALSE;
bMaxITA = 0xff;
DBG( _DBG_INFO2, "usb_AdjustGain()\n" );
/*
* define the strip to scan for coarse calibration
* done at 300dpi
*/
m_ScanParam.Size.dwLines = 1; /* for gain */
m_ScanParam.Size.dwPixels = scaps->Normal.Size.x *
scaps->OpticDpi.x / 300UL;
/*for TPA tests*/
#if 0
m_ScanParam.Size.dwPixels = dev->usbDev.pSource->Size.x *
scaps->OpticDpi.x / 300UL;
#endif
m_ScanParam.Size.dwBytes = m_ScanParam.Size.dwPixels *
2 * m_ScanParam.bChannels;
if( hw->bReg_0x26 & _ONE_CH_COLOR &&
m_ScanParam.bDataType == SCANDATATYPE_Color ) {
m_ScanParam.Size.dwBytes *= 3;
}
m_ScanParam.Origin.x = (u_short)((u_long) hw->wActivePixelsStart *
300UL / scaps->OpticDpi.x);
/*for TPA tests*/
#if 0
m_ScanParam.Origin.x = (u_short)((u_long)dev->usbDev.pSource->DataOrigin.x *
300UL / scaps->OpticDpi.x);
#endif
m_ScanParam.bCalibration = PARAM_Gain;
DBG( _DBG_INFO2, "Coarse Calibration Strip:\n" );
DBG( _DBG_INFO2, "Lines = %lu\n", m_ScanParam.Size.dwLines );
DBG( _DBG_INFO2, "Pixels = %lu\n", m_ScanParam.Size.dwPixels );
DBG( _DBG_INFO2, "Bytes = %lu\n", m_ScanParam.Size.dwBytes );
DBG( _DBG_INFO2, "Origin.X = %u\n", m_ScanParam.Origin.x );
i = 0;
TOGAIN:
m_ScanParam.dMCLK = dMCLK;
if( !usb_SetScanParameters( dev, &m_ScanParam ))
return SANE_FALSE;
if( !usb_Wait4Warmup( dev )) {
DBG( _DBG_ERROR, "usb_AdjustGain() - CANCEL detected\n" );
return SANE_FALSE;
}
if( !usb_ScanBegin( dev, SANE_FALSE) ||
!usb_ScanReadImage( dev, pScanBuffer, m_ScanParam.Size.dwPhyBytes ) ||
!usb_ScanEnd( dev )) {
DBG( _DBG_ERROR, "usb_AdjustGain() failed\n" );
return SANE_FALSE;
}
DBG( _DBG_INFO2, "PhyBytes = %lu\n", m_ScanParam.Size.dwPhyBytes );
DBG( _DBG_INFO2, "PhyPixels = %lu\n", m_ScanParam.Size.dwPhyPixels );
sprintf( tmp, "coarse-gain-%u.raw", i++ );
dumpPicInit( &m_ScanParam, tmp );
dumpPic( tmp, pScanBuffer, m_ScanParam.Size.dwPhyBytes );
usb_Swap((u_short *)pScanBuffer, m_ScanParam.Size.dwPhyBytes );
if( fNegative ) {
if( m_ScanParam.bDataType == SCANDATATYPE_Color ) {
RGBULongDef rgb, rgbSum;
u_long dwLoop = m_ScanParam.Size.dwPhyPixels / 20 * 20;
u_long dw10, dwGray, dwGrayMax;
rgb.Red = rgb.Green = rgb.Blue = dwGrayMax = 0;
for( dw = 0; dw < dwLoop; ) {
rgbSum.Red = rgbSum.Green = rgbSum.Blue = 0;
for( dw10 = 20; dw10--; dw++ ) {
rgbSum.Red += (u_long)(((pRGBULongDef)pScanBuffer)[dw].Red);
rgbSum.Green += (u_long)(((pRGBULongDef)pScanBuffer)[dw].Green);
rgbSum.Blue += (u_long)(((pRGBULongDef)pScanBuffer)[dw].Blue);
}
dwGray = (rgbSum.Red * 30UL + rgbSum.Green * 59UL + rgbSum.Blue * 11UL) / 100UL;
if( fNegative == 1 || rgbSum.Red > rgbSum.Green) {
if( dwGray > dwGrayMax ) {
dwPos = (u_long)((pRGBUShortDef)pScanBuffer + dw - 20);
dwGrayMax = dwGray;
rgb.Red = rgbSum.Red;
rgb.Green = rgbSum.Green;
rgb.Blue = rgbSum.Blue;
}
}
}
Gain_Hilight.Red = (u_short)(rgb.Red / 20UL);
Gain_Hilight.Green = (u_short)(rgb.Green / 20UL);
Gain_Hilight.Blue = (u_short)(rgb.Blue / 20UL);
a_bRegs[0x3b] = usb_GetNewGain(Gain_Hilight.Red, 0 );
a_bRegs[0x3c] = usb_GetNewGain(Gain_Hilight.Green, 1 );
a_bRegs[0x3d] = usb_GetNewGain(Gain_Hilight.Blue, 2 );
} else {
u_long dwMax = 0, dwSum;
u_long dwLoop = m_ScanParam.Size.dwPhyPixels / 20 * 20;
u_long dw10;
for( dw = 0; dw < dwLoop;) {
dwSum = 0;
for( dw10 = 20; dw10--; dw++ )
dwSum += (u_long)((u_short*)pScanBuffer)[dw];
if((fNegative == 1) || (dwSum < 0x6000 * 20)) {
if( dwMax < dwSum )
dwMax = dwSum;
}
}
Gain_Hilight.Red = Gain_Hilight.Green =
Gain_Hilight.Blue = (u_short)(dwMax / 20UL);
Gain_Reg.Red = Gain_Reg.Green =
Gain_Reg.Blue = a_bRegs[0x3b] =
a_bRegs[0x3c] = a_bRegs[0x3d] = usb_GetNewGain(Gain_Hilight.Green,1);
}
} else {
if( m_ScanParam.bDataType == SCANDATATYPE_Color ) {
RGBUShortDef max_rgb, min_rgb, tmp_rgb;
u_long dwR, dwG, dwB;
u_long dwDiv = 10;
u_long dwLoop1 = m_ScanParam.Size.dwPhyPixels / dwDiv, dwLoop2;
max_rgb.Red = max_rgb.Green = max_rgb.Blue = 0;
min_rgb.Red = min_rgb.Green = min_rgb.Blue = 0xffff;
/* find out the max pixel value for R, G, B */
for( dw = 0; dwLoop1; dwLoop1-- ) {
/* do some averaging... */
for (dwLoop2 = dwDiv, dwR = dwG = dwB = 0;
dwLoop2; dwLoop2--, dw++) {
if( hw->bReg_0x26 & _ONE_CH_COLOR ) {
dwR += ((u_short*)pScanBuffer)[dw];
dwG += ((u_short*)pScanBuffer)
[dw+m_ScanParam.Size.dwPhyPixels+1];
dwB += ((u_short*)pScanBuffer)
[dw+(m_ScanParam.Size.dwPhyPixels+1)*2];
} else {
dwR += ((pRGBUShortDef)pScanBuffer)[dw].Red;
dwG += ((pRGBUShortDef)pScanBuffer)[dw].Green;
dwB += ((pRGBUShortDef)pScanBuffer)[dw].Blue;
}
}
dwR = dwR / dwDiv;
dwG = dwG / dwDiv;
dwB = dwB / dwDiv;
if(max_rgb.Red < dwR)
max_rgb.Red = dwR;
if(max_rgb.Green < dwG)
max_rgb.Green = dwG;
if(max_rgb.Blue < dwB)
max_rgb.Blue = dwB;
if(min_rgb.Red > dwR)
min_rgb.Red = dwR;
if(min_rgb.Green > dwG)
min_rgb.Green = dwG;
if(min_rgb.Blue > dwB)
min_rgb.Blue = dwB;
}
DBG(_DBG_INFO2, "MAX(R,G,B)= 0x%04x(%u), 0x%04x(%u), 0x%04x(%u)\n",
max_rgb.Red, max_rgb.Red, max_rgb.Green,
max_rgb.Green, max_rgb.Blue, max_rgb.Blue );
DBG(_DBG_INFO2, "MIN(R,G,B)= 0x%04x(%u), 0x%04x(%u), 0x%04x(%u)\n",
min_rgb.Red, min_rgb.Red, min_rgb.Green,
min_rgb.Green, min_rgb.Blue, min_rgb.Blue );
/* on CIS scanner, we use the min value, on CCD the max value
* for adjusting the gain
*/
tmp_rgb = max_rgb;
if( hw->bReg_0x26 & _ONE_CH_COLOR )
tmp_rgb = min_rgb;
DBG(_DBG_INFO2, "CUR(R,G,B)= 0x%04x(%u), 0x%04x(%u), 0x%04x(%u)\n",
tmp_rgb.Red, tmp_rgb.Red, tmp_rgb.Green,
tmp_rgb.Green, tmp_rgb.Blue, tmp_rgb.Blue);
/* m_dwIdealGain = IDEAL_GainNormal;
*/ /* min(min(rgb.wRed, rgb.wGreen), rgb.wBlue) */
a_bRegs[0x3b] = usb_GetNewGain( tmp_rgb.Red, 0 );
a_bRegs[0x3c] = usb_GetNewGain( tmp_rgb.Green, 1 );
a_bRegs[0x3d] = usb_GetNewGain( tmp_rgb.Blue, 2 );
if( !_IS_PLUSTEKMOTOR(hw->motorModel)) {
SANE_Bool adj = SANE_FALSE;
/* on CIS devices, we can control the lamp off settings */
if( hw->bReg_0x26 & _ONE_CH_COLOR ) {
/* m_dwIdealGain = IDEAL_GainNormal;
*/
if( adjLampSetting( CHANNEL_red, tmp_rgb.Red, m_dwIdealGain,
hw->red_lamp_on, &hw->red_lamp_off )) {
adj = SANE_TRUE;
}
if( adjLampSetting( CHANNEL_green, tmp_rgb.Green, m_dwIdealGain,
hw->green_lamp_on, &hw->green_lamp_off )) {
adj = SANE_TRUE;
}
if( adjLampSetting( CHANNEL_blue, tmp_rgb.Blue, m_dwIdealGain,
hw->blue_lamp_on, &hw->blue_lamp_off)){
adj = SANE_TRUE;
}
/* on any adjustment, set the registers... */
if( adj ) {
usb_AdjustLamps( dev );
if( i < _MAX_GAIN_LOOPS )
goto TOGAIN;
}
} else {
if((!a_bRegs[0x3b] ||
!a_bRegs[0x3c] || !a_bRegs[0x3d]) && dMCLK > 3.0) {
scanning->sParam.dMCLK = dMCLK = dMCLK - 0.5;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
adj = SANE_TRUE;
} else if(((a_bRegs[0x3b] == 63) || (a_bRegs[0x3c] == 63) ||
(a_bRegs[0x3d] == 63)) && (dMCLK < 10)) {
scanning->sParam.dMCLK = dMCLK = dMCLK + 0.5;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
adj = SANE_TRUE;
}
if( adj ) {
if( i < _MAX_GAIN_LOOPS )
goto TOGAIN;
}
#if 0
/* on CCD devices, we can adjust the dutycyles of the lamp */
Hardware.merlininfo.Green_PWM_Duty_Cycle =
(Hardware.merlininfo.Green_PWM_Duty_Cycle*90)/100;
if (Hardware.merlininfo.Green_PWM_Duty_Cycle <
Hardware.merlininfo.Green_PWM_Duty_Cycle_Low)
{
Hardware.NSCAfxMessageBox("Image too bright!");
return FALSE;
}
#endif
}
} else {
/* for MODEL KaoHsiung 1200 scanner multi-straight-line bug at
* 1200 dpi color mode
*/
if( hw->motorModel == MODEL_KaoHsiung &&
scaps->bCCD == kNEC3778 && dMCLK>= 5.5 && !a_bRegs[0x3c]){
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
scanning->sParam.dMCLK = dMCLK = dMCLK - 1.5;
goto TOGAIN;
} else if( hw->motorModel == MODEL_HuaLien &&
scaps->bCCD == kNEC3799 && fRepeatITA ) {
if((!a_bRegs[0x3b] ||
!a_bRegs[0x3c] || !a_bRegs[0x3d]) && dMCLK > 3.0) {
scanning->sParam.dMCLK = dMCLK = dMCLK - 0.5;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
goto TOGAIN;
} else if(((a_bRegs[0x3b] == 63) || (a_bRegs[0x3c] == 63) ||
(a_bRegs[0x3d] == 63)) && (dMCLK < 10)) {
scanning->sParam.dMCLK = dMCLK = dMCLK + 0.5;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
goto TOGAIN;
}
bMaxITA = (u_char)floor((dMCLK + 1) / 2);
fRepeatITA = SANE_FALSE;
}
}
} else {
u_short w_max = 0, w_min = 0xffff, w_tmp;
for( dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++ ) {
if( w_max < ((u_short*)pScanBuffer)[dw])
w_max = ((u_short*)pScanBuffer)[dw];
if( w_min > ((u_short*)pScanBuffer)[dw])
w_min = ((u_short*)pScanBuffer)[dw];
}
w_tmp = w_max;
if( hw->bReg_0x26 & _ONE_CH_COLOR )
w_tmp = w_min;
a_bRegs[0x3b] =
a_bRegs[0x3c] =
a_bRegs[0x3d] = usb_GetNewGain(w_tmp, 0);
DBG(_DBG_INFO2, "MAX(G)= 0x%04x(%u)\n", w_max, w_max );
DBG(_DBG_INFO2, "MIN(G)= 0x%04x(%u)\n", w_min, w_min );
DBG(_DBG_INFO2, "CUR(G)= 0x%04x(%u)\n", w_tmp, w_tmp );
/* m_dwIdealGain = IDEAL_GainNormal;
*/
if( !_IS_PLUSTEKMOTOR(hw->motorModel)) {
SANE_Bool adj = SANE_FALSE;
/* on CIS devices, we can control the lamp off settings */
if( hw->bReg_0x26 & _ONE_CH_COLOR ) {
if( adjLampSetting( CHANNEL_green, w_tmp, m_dwIdealGain,
hw->green_lamp_on, &hw->green_lamp_off )) {
adj = SANE_TRUE;
}
/* on any adjustment, set the registers... */
if( adj ) {
usb_AdjustLamps( dev );
if( i < _MAX_GAIN_LOOPS )
goto TOGAIN;
}
} else {
if( !a_bRegs[0x3b] && (dMCLK > 6.0)) {
scanning->sParam.dMCLK = dMCLK = dMCLK - 0.5;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
adj = SANE_TRUE;
} else if((a_bRegs[0x3b] == 63) && (dMCLK < 20)) {
scanning->sParam.dMCLK = dMCLK = dMCLK + 0.5;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
adj = SANE_TRUE;
}
if( adj ) {
if( i < _MAX_GAIN_LOOPS )
goto TOGAIN;
}
}
}
}
}
DBG( _DBG_INFO2, "REG[0x3b] = %u\n", a_bRegs[0x3b] );
DBG( _DBG_INFO2, "REG[0x3c] = %u\n", a_bRegs[0x3c] );
DBG( _DBG_INFO2, "REG[0x3d] = %u\n", a_bRegs[0x3d] );
/* adjust gain here if the user has set some values >= 0 */
setAdjGain( dev->adj.rgain, &a_bRegs[0x3b] );
setAdjGain( dev->adj.ggain, &a_bRegs[0x3c] );
setAdjGain( dev->adj.bgain, &a_bRegs[0x3d] );
DBG( _DBG_INFO2, "after tweaking:\n" );
DBG( _DBG_INFO2, "REG[0x3b] = %u\n", a_bRegs[0x3b] );
DBG( _DBG_INFO2, "REG[0x3c] = %u\n", a_bRegs[0x3c] );
DBG( _DBG_INFO2, "REG[0x3d] = %u\n", a_bRegs[0x3d] );
DBG( _DBG_INFO2, "red_lamp_on = %u\n", hw->red_lamp_on );
DBG( _DBG_INFO2, "red_lamp_off = %u\n", hw->red_lamp_off );
DBG( _DBG_INFO2, "green_lamp_on = %u\n", hw->green_lamp_on );
DBG( _DBG_INFO2, "green_lamp_off = %u\n", hw->green_lamp_off );
DBG( _DBG_INFO2, "blue_lamp_on = %u\n", hw->blue_lamp_on );
DBG( _DBG_INFO2, "blue_lamp_off = %u\n", hw->blue_lamp_off );
DBG( _DBG_INFO2, "usb_AdjustGain() done.\n" );
return SANE_TRUE;
}
/** usb_GetNewOffset
* @param pdwSum -
* @param pdwDiff -
* @param pcOffset -
* @param pIdeal -
* @param channel -
* @param cAdjust -
*/
static void usb_GetNewOffset( u_long *pdwSum, u_long *pdwDiff,
signed char *pcOffset, u_char *pIdeal,
u_long channel, signed char cAdjust )
{
/* IDEAL_Offset is currently set to 0x1000 = 4096 */
u_long dwIdealOffset = IDEAL_Offset;
if( pdwSum[channel] > dwIdealOffset ) {
/* Over ideal value */
pdwSum[channel] -= dwIdealOffset;
if( pdwSum[channel] < pdwDiff[channel] ) {
/* New offset is better than old one */
pdwDiff[channel] = pdwSum[channel];
pIdeal[channel] = a_bRegs[0x38 + channel];
}
pcOffset[channel] -= cAdjust;
} else {
/* Below than ideal value */
pdwSum[channel] = dwIdealOffset - pdwSum [channel];
if( pdwSum[channel] < pdwDiff[channel] ) {
/* New offset is better than old one */
pdwDiff[channel] = pdwSum[channel];
pIdeal[channel] = a_bRegs[0x38 + channel];
}
pcOffset[channel] += cAdjust;
}
if( pcOffset[channel] >= 0 )
a_bRegs[0x38 + channel] = pcOffset[channel];
else
a_bRegs[0x38 + channel] = (u_char)(32 - pcOffset[channel]);
}
/** usb_AdjustOffset
* function to perform the "coarse calibration step" part 2.
* We scan reference image pixels to determine the optimum coarse offset settings
* for R, G, B. (Analog gain and offset prior to ADC). These coefficients are
* applied at the line rate during normal scanning.
* On CIS based devices, we switch the light off, on CCD devices, we use the optical
* black pixels.
* Affects register 0x38, 0x39 and 0x3a
*/
static SANE_Bool usb_AdjustOffset( pPlustek_Device dev )
{
char tmp[40];
signed char cAdjust = 16;
signed char cOffset[3];
u_char bExpect[3];
int i;
u_long dw, dwPixels;
u_long dwDiff[3], dwSum[3];
pHWDef hw = &dev->usbDev.HwSetting;
if( usb_IsEscPressed())
return SANE_FALSE;
DBG( _DBG_INFO2, "usb_AdjustOffset()\n" );
m_ScanParam.Size.dwLines = 1; /* for gain */
m_ScanParam.Size.dwPixels = 2550;
if( hw->bReg_0x26 & _ONE_CH_COLOR )
dwPixels = m_ScanParam.Size.dwPixels;
else
dwPixels = (u_long)(hw->bOpticBlackEnd - hw->bOpticBlackStart );
m_ScanParam.Size.dwPixels = 2550;
m_ScanParam.Size.dwBytes = m_ScanParam.Size.dwPixels * 2 *
m_ScanParam.bChannels;
if( hw->bReg_0x26 & _ONE_CH_COLOR &&
m_ScanParam.bDataType == SCANDATATYPE_Color ) {
m_ScanParam.Size.dwBytes *= 3;
}
m_ScanParam.Origin.x = (u_short)((u_long)hw->bOpticBlackStart * 300UL /
dev->usbDev.Caps.OpticDpi.x);
m_ScanParam.bCalibration = PARAM_Offset;
m_ScanParam.dMCLK = dMCLK;
dwDiff[0] = dwDiff[1] = dwDiff[2] = 0xffff;
cOffset[0] = cOffset[1] = cOffset[2] = 0;
bExpect[0] = bExpect[1] = bExpect[2] = 0;
a_bRegs[0x38] = a_bRegs [0x39] = a_bRegs [0x3a] = 0;
if( hw->bReg_0x26 & _ONE_CH_COLOR ) {
/*
* if we have dark shading strip, there's no need to switch
* the lamp off
*/
if( dev->usbDev.pSource->DarkShadOrgY >= 0 ) {
usb_ModuleToHome( dev, SANE_TRUE );
usb_ModuleMove ( dev, MOVE_Forward,
(u_long)dev->usbDev.pSource->DarkShadOrgY );
a_bRegs[0x45] &= ~0x10;
} else {
/* switch lamp off to read dark data... */
a_bRegs[0x29] = 0;
usb_switchLamp( dev, SANE_FALSE );
}
}
if( 0 == dwPixels ) {
DBG( _DBG_ERROR, "OpticBlackEnd = OpticBlackStart!!!\n" );
return SANE_FALSE;
}
if( !usb_SetScanParameters( dev, &m_ScanParam )) {
DBG( _DBG_ERROR, "usb_AdjustOffset() failed\n" );
return SANE_FALSE;
}
i = 0;
DBG( _DBG_INFO2, "S.dwPixels = %lu\n", m_ScanParam.Size.dwPixels );
DBG( _DBG_INFO2, "dwPixels = %lu\n", dwPixels );
DBG( _DBG_INFO2, "dwPhyBytes = %lu\n", m_ScanParam.Size.dwPhyBytes );
DBG( _DBG_INFO2, "dwPhyPixels = %lu\n", m_ScanParam.Size.dwPhyPixels );
while( cAdjust ) {
/*
* read data (a white calibration strip - hopefully ;-)
*/
if((!usb_ScanBegin(dev, SANE_FALSE)) ||
(!usb_ScanReadImage(dev,pScanBuffer,m_ScanParam.Size.dwPhyBytes)) ||
!usb_ScanEnd( dev )) {
DBG( _DBG_ERROR, "usb_AdjustOffset() failed\n" );
return SANE_FALSE;
}
sprintf( tmp, "coarse-off-%u.raw", i++ );
dumpPicInit( &m_ScanParam, tmp );
dumpPic( tmp, pScanBuffer, m_ScanParam.Size.dwPhyBytes );
if( m_ScanParam.bDataType == SCANDATATYPE_Color ) {
dwSum[0] = dwSum[1] = dwSum[2] = 0;
for (dw = 0; dw < dwPixels; dw++) {
dwSum[0] += (u_long)_HILO2WORD(((pColorWordDef)pScanBuffer)[dw].HiLo[0]);
dwSum[1] += (u_long)_HILO2WORD(((pColorWordDef)pScanBuffer)[dw].HiLo[1]);
dwSum[2] += (u_long)_HILO2WORD(((pColorWordDef)pScanBuffer)[dw].HiLo[2]);
}
DBG( _DBG_INFO2, "RedSum = %lu, ave = %lu\n",
dwSum[0], dwSum[0] /dwPixels );
DBG( _DBG_INFO2, "GreenSum = %lu, ave = %lu\n",
dwSum[1], dwSum[1] /dwPixels );
DBG( _DBG_INFO2, "BlueSum = %lu, ave = %lu\n",
dwSum[2], dwSum[2] /dwPixels );
/* do averaging for each channel */
dwSum[0] /= dwPixels;
dwSum[1] /= dwPixels;
dwSum[2] /= dwPixels;
usb_GetNewOffset( dwSum, dwDiff, cOffset, bExpect, 0, cAdjust );
usb_GetNewOffset( dwSum, dwDiff, cOffset, bExpect, 1, cAdjust );
usb_GetNewOffset( dwSum, dwDiff, cOffset, bExpect, 2, cAdjust );
DBG( _DBG_INFO2, "RedExpect = %u\n", bExpect[0] );
DBG( _DBG_INFO2, "GreenExpect = %u\n", bExpect[1] );
DBG( _DBG_INFO2, "BlueExpect = %u\n", bExpect[2] );
} else {
dwSum[0] = 0;
for( dw = 0; dw < dwPixels; dw++ )
dwSum[0] += (u_long)_HILO2WORD(((pHiLoDef)pScanBuffer)[dw]);
dwSum [0] /= dwPixels;
usb_GetNewOffset( dwSum, dwDiff, cOffset, bExpect, 0, cAdjust );
a_bRegs[0x3a] = a_bRegs[0x39] = a_bRegs[0x38];
DBG( _DBG_INFO2, "Sum = %lu, ave = %lu\n",
dwSum[0], dwSum[0] /dwPixels );
DBG( _DBG_INFO2, "Expect = %u\n", bExpect[0] );
}
_UIO(sanei_lm983x_write(dev->fd, 0x38, &a_bRegs[0x38], 3, SANE_TRUE));
cAdjust >>= 1;
}
if( m_ScanParam.bDataType == SCANDATATYPE_Color ) {
a_bRegs[0x38] = bExpect[0];
a_bRegs[0x39] = bExpect[1];
a_bRegs[0x3a] = bExpect[2];
} else {
a_bRegs[0x38] = a_bRegs[0x39] = a_bRegs[0x3a] = bExpect[0];
}
DBG( _DBG_INFO2, "REG[0x38] = %u\n", a_bRegs[0x38] );
DBG( _DBG_INFO2, "REG[0x39] = %u\n", a_bRegs[0x39] );
DBG( _DBG_INFO2, "REG[0x3a] = %u\n", a_bRegs[0x3a] );
DBG( _DBG_INFO2, "usb_AdjustOffset() done.\n" );
/* switch it on again on CIS based scanners */
if( hw->bReg_0x26 & _ONE_CH_COLOR ) {
if( dev->usbDev.pSource->DarkShadOrgY < 0 ) {
a_bRegs[0x29] = hw->bReg_0x29;
usb_switchLamp( dev, SANE_TRUE );
usbio_WriteReg( dev->fd, 0x29, a_bRegs[0x29]);
}
}
return SANE_TRUE;
}
/** this function tries to find out some suitable values for the dark
* fine calibration. If the device owns a black calibration strip
* (never saw one yet - _WAF_BLACKFINE is set then), the data is simply
* copied. If not, then the white strip is read with the lamp switched
* off...
*/
static void usb_GetDarkShading( pPlustek_Device dev, u_short *pwDest,
pHiLoDef pSrce, u_long dwPixels,
u_long dwAdd, int iOffset )
{
u_long dw;
u_long dwSum[2];
pDCapsDef scaps = &dev->usbDev.Caps;
pHWDef hw = &dev->usbDev.HwSetting;
if( scaps->workaroundFlag & _WAF_BLACKFINE )
{
u_short w;
int wtmp;
/* here we use the source buffer + a static offset */
for (dw = 0; dw < dwPixels; dw++, pSrce += dwAdd)
{
wtmp = ((int)_PHILO2WORD(pSrce) + iOffset);
if( wtmp < 0 )
wtmp = 0;
if( wtmp > 0xffff )
wtmp = 0xffff;
w = (u_short)wtmp;
pwDest[dw] = _LOBYTE(w) * 256 + _HIBYTE(w);
}
}
else
{
dwSum [0] = dwSum [1] = 0;
if( hw->bSensorConfiguration & 0x04 ) {
/* Even/Odd CCD */
for( dw = 0; dw < dwPixels; dw++, pSrce += dwAdd )
dwSum [dw & 1] += (u_long)_PHILO2WORD(pSrce);
dwSum [0] /= ((dwPixels + 1UL) >> 1);
dwSum [1] /= (dwPixels >> 1);
if( /*Registry.GetEvenOdd() == 1 ||*/ scaps->bPCB == 2)
{
dwSum[0] = dwSum[1] = (dwSum[0] + dwSum[1]) / 2;
}
dwSum[0] = (int)dwSum[0] + iOffset;
dwSum[1] = (int)dwSum[1] + iOffset;
if((int)dwSum[0] < 0)
dwSum[0] = 0;
if((int)dwSum[1] < 0)
dwSum[1] = 0;
dwSum[0] = (u_long)_LOBYTE(_LOWORD(dwSum[0])) * 256UL +
_HIBYTE(_LOWORD(dwSum[0]));
dwSum[1] = (u_long)_LOBYTE(_LOWORD (dwSum[1])) * 256UL +
_HIBYTE(_LOWORD(dwSum[1]));
for( dw = 0; dw < dwPixels; dw++ )
pwDest [dw] = (u_short)dwSum[dw & 1];
} else {
u_long dwEnd = 0;
/* Standard CCD */
/* do some averaging on the line */
for( dw = dwEnd; dw < dwPixels; dw++, pSrce += dwAdd )
dwSum[0] += (u_long)_PHILO2WORD(pSrce);
dwSum[0] /= (dwPixels - dwEnd);
/* add our offset... */
dwSum[0] = (int)dwSum[0] + iOffset;
if((int)dwSum[0] < 0)
dwSum [0] = 0;
dwSum[0] = (u_long)_LOBYTE(_LOWORD(dwSum[0])) * 256UL +
_HIBYTE(_LOWORD(dwSum[0]));
/* fill the shading data */
for( dw = dwEnd; dw < dwPixels; dw++ )
pwDest[dw] = (u_short)dwSum[0];
}
}
}
/** usb_AdjustDarkShading
* fine calibration part 1 - read the black calibration area and write
* the black line data to the offset coefficient data in Merlins' DRAM
* If there's no black line available, we can use the min pixel value
* from coarse calibration...
*/
static SANE_Bool usb_AdjustDarkShading( pPlustek_Device dev )
{
char tmp[40];
pScanDef scanning = &dev->scanning;
pDCapsDef scaps = &dev->usbDev.Caps;
pHWDef hw = &dev->usbDev.HwSetting;
if( usb_IsEscPressed())
return SANE_FALSE;
if( scaps->workaroundFlag & _WAF_SKIP_FINE )
return SANE_TRUE;
DBG( _DBG_INFO2, "usb_AdjustDarkShading()\n" );
DBG( _DBG_INFO2, "MCLK = %f (scanparam-MCLK=%f)\n",
dMCLK, scanning->sParam.dMCLK );
m_ScanParam = scanning->sParam;
m_ScanParam.Origin.y = 0;
m_ScanParam.UserDpi.y = scaps->OpticDpi.y;
m_ScanParam.Size.dwLines = 1; /* for gain */
m_ScanParam.bBitDepth = 16;
m_ScanParam.bCalibration = PARAM_DarkShading;
m_ScanParam.dMCLK = dMCLK;
if( _LM9831 == hw->chip ) {
m_ScanParam.UserDpi.x = usb_SetAsicDpiX( dev, m_ScanParam.UserDpi.x);
if( m_ScanParam.UserDpi.x < 100)
m_ScanParam.UserDpi.x = 150;
/* Now DPI X is physical */
m_ScanParam.Origin.x = m_ScanParam.Origin.x %
(u_short)m_dHDPIDivider;
m_ScanParam.Size.dwPixels = (u_long)scaps->Normal.Size.x *
m_ScanParam.UserDpi.x / 300UL;
m_ScanParam.Size.dwBytes = m_ScanParam.Size.dwPixels *
2UL * m_ScanParam.bChannels;
m_dwPixels = scanning->sParam.Size.dwPixels *
m_ScanParam.UserDpi.x / scanning->sParam.UserDpi.x;
} else {
m_ScanParam.Size.dwBytes = m_ScanParam.Size.dwPixels *
2 * m_ScanParam.bChannels;
}
if( hw->bReg_0x26 & _ONE_CH_COLOR &&
m_ScanParam.bDataType == SCANDATATYPE_Color ) {
m_ScanParam.Size.dwBytes *= 3;
}
/*
* if we have dark shading strip, there's no need to switch
* the lamp off
*/
if( dev->usbDev.pSource->DarkShadOrgY >= 0 ) {
usb_ModuleToHome( dev, SANE_TRUE );
usb_ModuleMove ( dev, MOVE_Forward,
(u_long)dev->usbDev.pSource->DarkShadOrgY );
} else {
/* switch lamp off to read dark data... */
a_bRegs[0x29] = 0;
usb_switchLamp( dev, SANE_FALSE );
}
usb_SetScanParameters( dev, &m_ScanParam );
if((!usb_ScanBegin(dev, SANE_FALSE)) ||
(!usb_ScanReadImage(dev,pScanBuffer, m_ScanParam.Size.dwPhyBytes)) ||
(!usb_ScanEnd( dev ))) {
/* on error, reset the lamp settings*/
a_bRegs[0x29] = hw->bReg_0x29;
usb_switchLamp( dev, SANE_TRUE );
usbio_WriteReg( dev->fd, 0x29, a_bRegs[0x29] );
DBG( _DBG_ERROR, "usb_AdjustDarkShading() failed\n" );
return SANE_FALSE;
}
/*
* set illumination mode and switch lamp on again
*/
a_bRegs[0x29] = hw->bReg_0x29;
usb_switchLamp( dev, SANE_TRUE );
if( !usbio_WriteReg( dev->fd, 0x29, a_bRegs[0x29])) {
DBG( _DBG_ERROR, "usb_AdjustDarkShading() failed\n" );
return SANE_FALSE;
}
sprintf( tmp, "fine-black.raw" );
dumpPicInit( &m_ScanParam, tmp );
dumpPic( tmp, pScanBuffer, m_ScanParam.Size.dwPhyBytes );
usleep(500 * 1000); /* Warm up lamp again */
if( m_ScanParam.bDataType == SCANDATATYPE_Color ) {
if( hw->bReg_0x26 & _ONE_CH_COLOR ) {
usb_GetDarkShading( dev, a_wDarkShading, (pHiLoDef)pScanBuffer,
m_ScanParam.Size.dwPhyPixels, 1,
scanning->sParam.swOffset[0]);
usb_GetDarkShading( dev, a_wDarkShading + m_ScanParam.Size.dwPhyPixels,
(pHiLoDef)pScanBuffer + m_ScanParam.Size.dwPhyPixels,
m_ScanParam.Size.dwPhyPixels, 1, scanning->sParam.swOffset[1]);
usb_GetDarkShading( dev, a_wDarkShading + m_ScanParam.Size.dwPhyPixels * 2,
(pHiLoDef)pScanBuffer + m_ScanParam.Size.dwPhyPixels * 2,
m_ScanParam.Size.dwPhyPixels, 1, scanning->sParam.swOffset[2]);
} else {
usb_GetDarkShading( dev, a_wDarkShading, (pHiLoDef)pScanBuffer,
m_ScanParam.Size.dwPhyPixels, 3,
scanning->sParam.swOffset[0]);
usb_GetDarkShading( dev, a_wDarkShading + m_ScanParam.Size.dwPhyPixels,
(pHiLoDef)pScanBuffer + 1, m_ScanParam.Size.dwPhyPixels,
3, scanning->sParam.swOffset[1]);
usb_GetDarkShading( dev, a_wDarkShading + m_ScanParam.Size.dwPhyPixels * 2,
(pHiLoDef)pScanBuffer + 2, m_ScanParam.Size.dwPhyPixels,
3, scanning->sParam.swOffset[2]);
}
} else {
usb_GetDarkShading( dev, a_wDarkShading, (pHiLoDef)pScanBuffer,
m_ScanParam.Size.dwPhyPixels, 1,
scanning->sParam.swOffset[1]);
memcpy( a_wDarkShading + m_ScanParam.Size.dwPhyPixels,
a_wDarkShading, m_ScanParam.Size.dwPhyPixels * 2 );
memcpy( a_wDarkShading + m_ScanParam.Size.dwPhyPixels * 2,
a_wDarkShading, m_ScanParam.Size.dwPhyPixels * 2 );
}
a_bRegs[0x45] |= 0x10;
usb_line_statistics( "Dark", a_wDarkShading, m_ScanParam.Size.dwPhyPixels,
scanning->sParam.bDataType == SCANDATATYPE_Color?1:0);
return SANE_TRUE;
}
/** usb_AdjustWhiteShading
* fine calibration part 2 - read the white calibration area and calculate
* the gain coefficient for each pixel
*
*/
static SANE_Bool usb_AdjustWhiteShading( pPlustek_Device dev )
{
char tmp[40];
pScanDef scanning = &dev->scanning;
pDCapsDef scaps = &dev->usbDev.Caps;
pHWDef hw = &dev->usbDev.HwSetting;
u_char *pBuf = pScanBuffer;
u_long dw, dwLines, dwRead;
u_long dwShadingLines;
pMonoWordDef pValue;
u_long* pdw;
int i;
if( scaps->workaroundFlag & _WAF_SKIP_FINE )
return SANE_TRUE;
m_pAvColor = (pRGBUShortDef)pScanBuffer;
m_pAvMono = (u_short*)pScanBuffer;
if( usb_IsEscPressed())
return SANE_FALSE;
if( m_ScanParam.PhyDpi.x > 75)
dwShadingLines = 64;
else
dwShadingLines = 32;
/* NOTE: m_wHilight + m_wShadow < dwShadingLines */
m_wHilight = 4;
m_wShadow = 4;
m_ScanParam = scanning->sParam;
m_ScanParam.Origin.y = 0;
m_ScanParam.bBitDepth = 16;
/* HEINER: check ADF stuff... */
#if 0
if( ScanInf.m_fADF ) {
/* avoid ADF WhiteShading big noise */
m_ScanParam.UserDpi.y = Device.Caps.OpticDpi.y - 200;
} else {
#endif
m_ScanParam.UserDpi.y = scaps->OpticDpi.y;
/* } */
m_ScanParam.Size.dwBytes = m_ScanParam.Size.dwPixels * 2 *
m_ScanParam.bChannels;
if( hw->bReg_0x26 & _ONE_CH_COLOR &&
m_ScanParam.bDataType == SCANDATATYPE_Color ) {
m_ScanParam.Size.dwBytes *= 3;
}
m_ScanParam.bCalibration = PARAM_WhiteShading;
m_ScanParam.dMCLK = dMCLK;
if( _LM9831 == hw->chip ) {
m_ScanParam.UserDpi.x = usb_SetAsicDpiX( dev, m_ScanParam.UserDpi.x);
if( m_ScanParam.UserDpi.x < 100 )
m_ScanParam.UserDpi.x = 150;
/* Now DPI X is physical */
m_ScanParam.Origin.x = m_ScanParam.Origin.x % (u_short)m_dHDPIDivider;
m_ScanParam.Size.dwPixels = (u_long)scaps->Normal.Size.x * m_ScanParam.UserDpi.x / 300UL;
m_ScanParam.Size.dwBytes = m_ScanParam.Size.dwPixels * 2UL * m_ScanParam.bChannels;
if( hw->bReg_0x26 & _ONE_CH_COLOR &&
m_ScanParam.bDataType == SCANDATATYPE_Color ) {
m_ScanParam.Size.dwBytes *= 3;
}
m_dwPixels = scanning->sParam.Size.dwPixels * m_ScanParam.UserDpi.x / scanning->sParam.UserDpi.x;
dw = (u_long)(hw->wDRAMSize - DRAM_UsedByAsic16BitMode) * 1024UL;
m_ScanParam.Size.dwLines = dwShadingLines; /* SHADING_Lines */
for( dwLines = dw / m_ScanParam.Size.dwBytes;
dwLines < m_ScanParam.Size.dwLines; m_ScanParam.Size.dwLines>>=1);
} else {
m_ScanParam.Size.dwBytes = m_ScanParam.Size.dwPixels * 2 * m_ScanParam.bChannels;
if( hw->bReg_0x26 & _ONE_CH_COLOR &&
m_ScanParam.bDataType == SCANDATATYPE_Color ) {
m_ScanParam.Size.dwBytes *= 3;
}
m_ScanParam.Size.dwLines = dwShadingLines; /* SHADING_Lines */
}
/* goto the correct position again... */
if( dev->usbDev.pSource->DarkShadOrgY >= 0 ) {
usb_ModuleToHome( dev, SANE_TRUE );
usb_ModuleMove ( dev, MOVE_Forward,
(u_long)dev->usbDev.pSource->ShadingOriginY);
}
sprintf( tmp, "fine-white.raw" );
DBG( _DBG_INFO2, "FINE WHITE Calibration Strip: %s\n", tmp );
DBG( _DBG_INFO2, "Shad.-Lines = %lu\n", dwShadingLines );
DBG( _DBG_INFO2, "Lines = %lu\n", m_ScanParam.Size.dwLines );
DBG( _DBG_INFO2, "Pixels = %lu\n", m_ScanParam.Size.dwPixels );
DBG( _DBG_INFO2, "Bytes = %lu\n", m_ScanParam.Size.dwBytes );
DBG( _DBG_INFO2, "Origin.X = %u\n", m_ScanParam.Origin.x );
for( dw = dwShadingLines /*SHADING_Lines*/,
dwRead = 0; dw; dw -= m_ScanParam.Size.dwLines ) {
if( usb_SetScanParameters( dev, &m_ScanParam ) &&
usb_ScanBegin( dev, SANE_FALSE )) {
DBG( _DBG_INFO2, "TotalBytes = %lu\n",
m_ScanParam.Size.dwTotalBytes );
if( _LM9831 == hw->chip ) {
/* Delay for white shading hold for 9831-1200 scanner */
usleep(250 * 10000);
}
if( usb_ScanReadImage( dev, pBuf + dwRead,
m_ScanParam.Size.dwTotalBytes)) {
if( _LM9831 == hw->chip ) {
/* Delay for white shading hold for 9831-1200 scanner */
usleep(10 * 1000);
}
if( 0 == dwRead ) {
dumpPicInit( &m_ScanParam, tmp );
}
dumpPic( tmp, pBuf + dwRead, m_ScanParam.Size.dwTotalBytes );
if( usb_ScanEnd( dev )) {
dwRead += m_ScanParam.Size.dwTotalBytes;
continue;
}
}
}
DBG( _DBG_ERROR, "usb_AdjustWhiteShading() failed\n" );
return SANE_FALSE;
}
/* Simulate the old program */
m_pSum = (u_long*)(pBuf + m_ScanParam.Size.dwPhyBytes *
dwShadingLines/*SHADING_Lines*/);
/*
* do some reordering on CIS based devices:
* from RRRRRRR.... GGGGGGGG.... BBBBBBBBB, create RGB RGB RGB ...
* to use the following code, originally written for CCD devices...
*/
if( hw->bReg_0x26 & _ONE_CH_COLOR ) {
u_short *dest, *src;
u_long dww;
src = (u_short*)pBuf;
DBG( _DBG_INFO2, "PhyBytes = %lu\n", m_ScanParam.Size.dwPhyBytes );
DBG( _DBG_INFO2, "PhyPixels = %lu\n", m_ScanParam.Size.dwPhyPixels );
DBG( _DBG_INFO2, "Pixels = %lu\n", m_ScanParam.Size.dwPixels );
DBG( _DBG_INFO2, "Bytes = %lu\n", m_ScanParam.Size.dwBytes );
DBG( _DBG_INFO2, "Channels = %u\n", m_ScanParam.bChannels );
for( dwLines = dwShadingLines; dwLines; dwLines-- ) {
dest = a_wWhiteShading;
for( dw=dww=0; dw < m_ScanParam.Size.dwPhyPixels; dw++, dww+=3 ) {
dest[dww] = src[dw];
dest[dww + 1] = src[m_ScanParam.Size.dwPhyPixels + dw];
dest[dww + 2] = src[m_ScanParam.Size.dwPhyPixels * 2 + dw];
}
/* copy line back ... */
memcpy( src, dest, m_ScanParam.Size.dwPhyPixels * 3 * 2 );
src = &src[m_ScanParam.Size.dwPhyPixels * 3];
}
m_ScanParam.bChannels = 3;
}
if( _LM9831 == hw->chip ) {
u_short *pwDest = (u_short*)pBuf;
pHiLoDef pwSrce = (pHiLoDef)pBuf;
pwSrce += ((u_long)(scanning->sParam.Origin.x-m_ScanParam.Origin.x) /
(u_short)m_dHDPIDivider) *
(scaps->OpticDpi.x / 300UL) * m_ScanParam.bChannels;
for( dwLines = dwShadingLines /*SHADING_Lines*/; dwLines; dwLines--) {
for( dw = 0; dw < m_dwPixels * m_ScanParam.bChannels; dw++ )
pwDest[dw] = _HILO2WORD( pwSrce[dw] );
pwDest += (u_long)m_dwPixels * m_ScanParam.bChannels;
pwSrce = (pHiLoDef)((u_char*)pwSrce + m_ScanParam.Size.dwPhyBytes);
}
_SWAP(m_ScanParam.Size.dwPhyPixels, m_dwPixels);
} else {
/* Discard the status word and conv. the hi-lo order to intel format */
u_short *pwDest = (u_short*)pBuf;
pHiLoDef pwSrce = (pHiLoDef)pBuf;
for( dwLines = dwShadingLines/*SHADING_Lines*/; dwLines; dwLines-- ) {
for( dw = 0; dw < m_ScanParam.Size.dwPhyPixels * m_ScanParam.bChannels; dw++)
pwDest[dw] = _HILO2WORD( pwSrce[dw] );
pwDest += m_ScanParam.Size.dwPhyPixels * m_ScanParam.bChannels;
pwSrce = (pHiLoDef)((u_char*)pwSrce + m_ScanParam.Size.dwPhyBytes);
}
}
if( scanning->sParam.bDataType == SCANDATATYPE_Color ) {
u_long* pdwR = (u_long*)m_pSum;
u_long* pdwG = pdwR + m_ScanParam.Size.dwPhyPixels;
u_long* pdwB = pdwG + m_ScanParam.Size.dwPhyPixels;
pRGBUShortDef pw, pwRGB;
u_short w, wR, wG, wB;
memset(m_pSum, 0, m_ScanParam.Size.dwPhyPixels * 4UL * 3UL);
/* Sort hilight */
if( m_wHilight ) {
for( dwLines = m_wHilight,
pwRGB = m_pAvColor + m_ScanParam.Size.dwPhyPixels * dwLines;
dwLines < dwShadingLines/*SHADING_Lines*/;
dwLines++, pwRGB += m_ScanParam.Size.dwPhyPixels ) {
for( dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++ ) {
pw = m_pAvColor;
wR = pwRGB[dw].Red;
wG = pwRGB[dw].Green;
wB = pwRGB[dw].Blue;
for( w = 0; w < m_wHilight;
w++, pw += m_ScanParam.Size.dwPhyPixels ) {
if( wR > pw[dw].Red )
_SWAP( wR, pw[dw].Red );
if( wG > pw[dw].Green )
_SWAP( wG, pw[dw].Green );
if( wB > pw[dw].Blue )
_SWAP( wB, pw[dw].Blue );
}
pwRGB[dw].Red = wR;
pwRGB[dw].Green = wG;
pwRGB[dw].Blue = wB;
}
}
}
/* Sort shadow */
if( m_wShadow ) {
for( dwLines = m_wHilight,
pwRGB = m_pAvColor + m_ScanParam.Size.dwPhyPixels * dwLines;
dwLines < (dwShadingLines/*SHADING_Lines*/ - m_wShadow);
dwLines++, pwRGB += m_ScanParam.Size.dwPhyPixels) {
for (dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++) {
pw = m_pAvColor + (dwShadingLines/*SHADING_Lines*/ -
m_wShadow) * m_ScanParam.Size.dwPhyPixels;
wR = pwRGB[dw].Red;
wG = pwRGB[dw].Green;
wB = pwRGB[dw].Blue;
for( w = 0; w < m_wShadow;
w++, pw += m_ScanParam.Size.dwPhyPixels ) {
if( wR < pw[dw].Red )
_SWAP( wR, pw[dw].Red );
if( wG < pw[dw].Green )
_SWAP( wG, pw [dw].Green );
if( wB > pw[dw].Blue )
_SWAP( wB, pw[dw].Blue );
}
pwRGB [dw].Red = wR;
pwRGB [dw].Green = wG;
pwRGB [dw].Blue = wB;
}
}
}
/* Sum */
for( dwLines = m_wHilight,
pwRGB = (pRGBUShortDef)
(m_pAvColor + m_ScanParam.Size.dwPhyPixels * dwLines);
dwLines < (dwShadingLines/*SHADING_Lines*/ - m_wShadow);
dwLines++, pwRGB += m_ScanParam.Size.dwPhyPixels ) {
for( dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++ ) {
pdwR[dw] += pwRGB[dw].Red;
pdwG[dw] += pwRGB[dw].Green;
pdwB[dw] += pwRGB[dw].Blue;
}
}
/* simulate old program */
pValue = (pMonoWordDef)a_wWhiteShading;
pdw = pdwR;
/* Software gain */
if( scanning->sParam.bSource != SOURCE_Negative ) {
for( i = 0; i < 3; i++ ) {
for( dw = m_ScanParam.Size.dwPhyPixels;
dw; dw--, pValue++, pdw++) {
*pdw = *pdw * 1000 / ((dwShadingLines/*SHADING_Lines*/ -
m_wHilight-m_wShadow) * scanning->sParam.swGain[i]);
if(*pdw > 65535U)
pValue->Mono = 65535U;
else
pValue->Mono = (u_short)*pdw;
if (pValue->Mono > 16384U)
pValue->Mono = (u_short)(GAIN_Target * 16384U / pValue->Mono);
else
pValue->Mono = GAIN_Target;
_SWAP(pValue->HiLo.bHi, pValue->HiLo.bLo);
}
}
} else {
for( dw = m_ScanParam.Size.dwPhyPixels * 3; dw; dw--, pValue++, pdw++)
pValue->Mono = (u_short)(*pdw / (dwShadingLines - m_wHilight - m_wShadow));
}
} else {
/* gray mode */
u_short *pwAv, *pw;
u_short w, wV;
memset( m_pSum, 0, m_ScanParam.Size.dwPhyPixels << 2 );
if( m_wHilight ) {
for( dwLines = m_wHilight,
pwAv = m_pAvMono + m_ScanParam.Size.dwPhyPixels * dwLines;
dwLines < dwShadingLines/*SHADING_Lines*/;
dwLines++, pwAv += m_ScanParam.Size.dwPhyPixels) {
for( dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++ ) {
pw = m_pAvMono;
wV = pwAv [dw];
for( w = 0; w < m_wHilight; w++,
pw += m_ScanParam.Size.dwPhyPixels ) {
if( wV > pw[dw] )
_SWAP( wV, pw[dw] );
}
pwAv[dw] = wV;
}
}
}
/* Sort shadow */
if (m_wShadow)
{
for (dwLines = m_wHilight, pwAv = m_pAvMono + m_ScanParam.Size.dwPhyPixels * dwLines;
dwLines < (dwShadingLines/*SHADING_Lines*/ - m_wShadow); dwLines++, pwAv += m_ScanParam.Size.dwPhyPixels)
for (dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++)
{
pw = m_pAvMono + (dwShadingLines/*SHADING_Lines*/ - m_wShadow) * m_ScanParam.Size.dwPhyPixels;
wV = pwAv [dw];
for (w = 0; w < m_wShadow; w++, pw += m_ScanParam.Size.dwPhyPixels)
if (wV < pw [dw])
_SWAP (wV, pw [dw]);
pwAv [dw] = wV;
}
}
/* Sum */
pdw = (u_long*)m_pSum; /* HEINER: check this */
for (dwLines = m_wHilight, pwAv = m_pAvMono + m_ScanParam.Size.dwPhyPixels * dwLines;
dwLines < (dwShadingLines/*SHADING_Lines*/ - m_wShadow); dwLines++, pwAv += m_ScanParam.Size.dwPhyPixels)
for (dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++)
pdw[dw] += pwAv [dw];
/* Software gain */
pValue = (pMonoWordDef)a_wWhiteShading;
if( scanning->sParam.bSource != SOURCE_Negative ) {
for( dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++) {
pdw[dw] = pdw [dw] * 1000 / ((dwShadingLines/*SHADING_Lines*/ -
m_wHilight - m_wShadow) * scanning->sParam.swGain[1]);
if( pdw[dw] > 65535U )
pValue[dw].Mono = 65535;
else
pValue[dw].Mono = (u_short)pdw[dw];
if( pValue[dw].Mono > 16384U ) {
pValue[dw].Mono = (u_short)(GAIN_Target * 16384U / pValue[dw].Mono);
_SWAP(pValue[dw].HiLo.bHi, pValue[dw].HiLo.bLo);
} else
pValue[dw].Mono = GAIN_Target;
}
} else{
for( dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++ )
pValue[dw].Mono = (u_short)(pdw[dw] /
(dwShadingLines - m_wHilight - m_wShadow));
}
}
usb_line_statistics( "White", a_wWhiteShading, m_ScanParam.Size.dwPhyPixels,
scanning->sParam.bDataType == SCANDATATYPE_Color?1:0);
return SANE_TRUE;
}
/** for negative film only
* we need to resize the gain to obtain bright white...
*/
static void usb_ResizeWhiteShading( double dAmp, u_short *pwShading, int iGain )
{
u_long dw, dwAmp;
u_short w;
for( dw = 0; dw < m_ScanParam.Size.dwPhyPixels; dw++ ) {
dwAmp = (u_long)(GAIN_Target * 0x4000 /
(pwShading[dw] + 1) * dAmp) * iGain / 1000;
if( dwAmp <= GAIN_Target)
w = (u_short)dwAmp;
else
w = GAIN_Target;
pwShading[dw] = (u_short)_LOBYTE(w) * 256 + _HIBYTE(w);
}
}
/**
*/
static void usb_PrepareCalibration( pPlustek_Device dev )
{
pScanDef scanning = &dev->scanning;
pDCapsDef scaps = &dev->usbDev.Caps;
usb_GetSoftwareOffsetGain( dev );
pScanBuffer = scanning->pScanBuffer;
pParam = &scanning->sParam;
memset( &m_ScanParam, 0, sizeof(ScanParam));
m_ScanParam.UserDpi = scaps->OpticDpi;
m_ScanParam.PhyDpi = scaps->OpticDpi;
m_ScanParam.bChannels = scanning->sParam.bChannels;
m_ScanParam.bBitDepth = 16;
m_ScanParam.bSource = scanning->sParam.bSource;
m_ScanParam.Origin.y = 0;
if( scanning->sParam.bDataType == SCANDATATYPE_Color )
m_ScanParam.bDataType = SCANDATATYPE_Color;
else
m_ScanParam.bDataType = SCANDATATYPE_Gray;
usb_SetMCLK( dev, &m_ScanParam );
/* preset these registers offset/gain */
a_bRegs[0x38] = a_bRegs[0x39] = a_bRegs[0x3a] = 0;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
a_bRegs[0x45] &= ~0x10;
memset( a_wWhiteShading, 0, _SHADING_BUF );
memset( a_wDarkShading, 0, _SHADING_BUF );
scanning->skipCoarseCalib = SANE_FALSE;
if( dev->adj.cacheCalData )
if( usb_ReadAndSetCalData( dev ))
scanning->skipCoarseCalib = SANE_TRUE;
}
/** usb_DoCalibration
*/
static int usb_DoCalibration( pPlustek_Device dev )
{
pScanDef scanning = &dev->scanning;
pDCapsDef scaps = &dev->usbDev.Caps;
pHWDef hw = &dev->usbDev.HwSetting;
DBG( _DBG_INFO, "usb_DoCalibration()\n" );
if( SANE_TRUE == scanning->fCalibrated )
return SANE_TRUE;
/* Go to shading position
*/
DBG( _DBG_INFO, "goto shading position\n" );
/* HEINER: Currently not clear why Plustek didn't use the ShadingOriginY
* for all modes
* It should be okay to remove this and reference to the ShadingOriginY
*/
#if 0
if( scanning->sParam.bSource == SOURCE_Negative ) {
DBG( _DBG_INFO, "DataOrigin.x=%u, DataOrigin.y=%u\n",
dev->usbDev.pSource->DataOrigin.x, dev->usbDev.pSource->DataOrigin.y);
if(!usb_ModuleMove( dev, MOVE_Forward,
(dev->usbDev.pSource->DataOrigin.y +
dev->usbDev.pSource->Size.y / 2))) {
return _E_LAMP_NOT_IN_POS;
}
} else {
#endif
DBG( _DBG_INFO, "ShadingOriginY=%lu\n",
(u_long)dev->usbDev.pSource->ShadingOriginY );
if((hw->motorModel == MODEL_HuaLien) && (scaps->OpticDpi.x==600)) {
if (!usb_ModuleMove(dev, MOVE_ToShading,
(u_long)dev->usbDev.pSource->ShadingOriginY)) {
return _E_LAMP_NOT_IN_POS;
}
} else {
if( !usb_ModuleMove(dev, MOVE_Forward,
(u_long)dev->usbDev.pSource->ShadingOriginY)) {
return _E_LAMP_NOT_IN_POS;
}
}
/* }*/
DBG( _DBG_INFO, "shading position reached\n" );
usb_PrepareCalibration( dev );
/*
* this won't work for Plustek devices!!!
*/
#if 0
if( scaps->workaroundFlag & _WAF_BYPASS_CALIBRATION ||
!(SCANDEF_QualityScan & dev->scanning.dwFlag)) {
#else
if( scaps->workaroundFlag & _WAF_BYPASS_CALIBRATION ) {
#endif
DBG( _DBG_INFO, "--> BYPASS\n" );
a_bRegs[0x38] = a_bRegs[0x39] = a_bRegs[0x3a] = 0;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
setAdjGain( dev->adj.rgain, &a_bRegs[0x3b] );
setAdjGain( dev->adj.ggain, &a_bRegs[0x3c] );
setAdjGain( dev->adj.bgain, &a_bRegs[0x3d] );
a_bRegs[0x45] |= 0x10;
usb_SetMCLK( dev, &scanning->sParam );
dumpregs( dev->fd, a_bRegs );
DBG( _DBG_INFO, "<-- BYPASS\n" );
} else {
switch( scanning->sParam.bSource ) {
case SOURCE_Negative:
DBG( _DBG_INFO, "NEGATIVE Shading\n" );
m_dwIdealGain = IDEAL_GainNormal;
if( dev->usbDev.Caps.OpticDpi.x == 600 )
dMCLK = 7;
else
dMCLK = 8;
for(;;) {
if( usb_AdjustGain( dev, 2)) {
if( a_bRegs[0x3b] && a_bRegs[0x3c] && a_bRegs[0x3d]) {
break;
} else {
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
dMCLK--;
}
} else {
return _E_LAMP_NOT_STABLE;
}
}
scanning->sParam.dMCLK = dMCLK;
Gain_Reg.Red = a_bRegs[0x3b];
Gain_Reg.Green = a_bRegs[0x3c];
Gain_Reg.Blue = a_bRegs[0x3d];
Gain_NegHilight = Gain_Hilight;
DBG( _DBG_INFO, "MCLK = %.3f\n", dMCLK );
DBG( _DBG_INFO, "GainRed = %u\n", a_bRegs[0x3b] );
DBG( _DBG_INFO, "GainGreen = %u\n", a_bRegs[0x3c] );
DBG( _DBG_INFO, "GainBlue = %u\n", a_bRegs[0x3d] );
#if 0
if( !usb_ModuleMove( dev, MOVE_Backward,
dev->usbDev.pSource->DataOrigin.y +
dev->usbDev.pSource->Size.y / 2 -
dev->usbDev.pSource->ShadingOriginY)) {
return _E_LAMP_NOT_IN_POS;
}
#endif
a_bRegs[0x45] &= ~0x10;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
if(!usb_AdjustGain( dev, 1 ))
return _E_INTERNAL;
a_bRegs[0x3b] = a_bRegs[0x3c] = a_bRegs[0x3d] = 1;
DBG( _DBG_INFO, "Settings done, so start...\n" );
if( !usb_AdjustOffset(dev) || !usb_AdjustDarkShading(dev) ||
!usb_AdjustWhiteShading(dev)) {
return _E_INTERNAL;
}
dRed = 0.93 + 0.067 * Gain_Reg.Red;
dGreen = 0.93 + 0.067 * Gain_Reg.Green;
dBlue = 0.93 + 0.067 * Gain_Reg.Blue;
dExpect = 2.85;
if( dBlue >= dGreen && dBlue >= dRed )
dMax = dBlue;
else
if( dGreen >= dRed && dGreen >= dBlue )
dMax = dGreen;
else
dMax = dRed;
dMax = dExpect / dMax;
dRed *= dMax;
dGreen *= dMax;
dBlue *= dMax;
if( m_ScanParam.bDataType == SCANDATATYPE_Color ) {
usb_ResizeWhiteShading( dRed, a_wWhiteShading,
scanning->sParam.swGain[0]);
usb_ResizeWhiteShading( dGreen, a_wWhiteShading +
m_ScanParam.Size.dwPhyPixels,
scanning->sParam.swGain[1]);
usb_ResizeWhiteShading( dBlue, a_wWhiteShading +
m_ScanParam.Size.dwPhyPixels*2,
scanning->sParam.swGain[2]);
}
break;
case SOURCE_ADF:
DBG( _DBG_INFO, "ADF Shading\n" );
m_dwIdealGain = IDEAL_GainPositive;
if( scanning->sParam.bDataType == SCANDATATYPE_BW ) {
if( scanning->sParam.PhyDpi.x <= 200 ) {
scanning->sParam.dMCLK = 4.5;
dMCLK = 4.0;
} else if ( scanning->sParam.PhyDpi.x <= 300 ) {
scanning->sParam.dMCLK = 4.0;
dMCLK = 3.5;
} else if( scanning->sParam.PhyDpi.x <= 400 ) {
scanning->sParam.dMCLK = 5.0;
dMCLK = 4.0;
} else {
scanning->sParam.dMCLK = 6.0;
dMCLK = 4.0;
}
} else { /* Gray */
if( scanning->sParam.PhyDpi.x <= 400 ) {
scanning->sParam.dMCLK = 6.0;
dMCLK = 4.5;
} else {
scanning->sParam.dMCLK = 9.0;
dMCLK = 7.0;
}
}
dMCLK_ADF = dMCLK;
DBG( _DBG_INFO, "Settings done, so start...\n" );
if( !usb_AdjustGain(dev, 0) || !usb_AdjustOffset(dev) ||
!usb_AdjustDarkShading(dev) || !usb_AdjustWhiteShading(dev)) {
return _E_INTERNAL;
}
break;
case SOURCE_Transparency:
DBG( _DBG_INFO, "TRANSPARENCY Shading\n" );
m_dwIdealGain = IDEAL_GainPositive;
if( !_IS_PLUSTEKMOTOR(hw->motorModel)) {
DBG( _DBG_INFO, "No Plustek model: %udpi\n",
scanning->sParam.PhyDpi.x );
usb_SetMCLK( dev, &scanning->sParam );
} else {
if( dev->usbDev.Caps.OpticDpi.x == 600 ) {
scanning->sParam.dMCLK = 8;
dMCLK = 4;
} else {
if( dev->usbDev.Caps.bPCB == 0x06 )
scanning->sParam.dMCLK = 8;
else
scanning->sParam.dMCLK = 8;
dMCLK = 6;
}
}
DBG( _DBG_INFO, "Settings done, so start...\n" );
if( !usb_AdjustGain(dev, 0) || !usb_AdjustOffset(dev) ||
!usb_AdjustDarkShading(dev) || !usb_AdjustWhiteShading(dev)) {
return _E_INTERNAL;
}
break;
default:
if( !_IS_PLUSTEKMOTOR(hw->motorModel)) {
DBG( _DBG_INFO, "No Plustek model: %udpi\n",
scanning->sParam.PhyDpi.x );
usb_SetMCLK( dev, &scanning->sParam );
} else if( dev->usbDev.Caps.OpticDpi.x == 600 ) {
DBG( _DBG_INFO, "Default Shading (600dpi)\n" );
if( dev->usbDev.Caps.bCCD == kSONY548 ) {
DBG( _DBG_INFO, "CCD - SONY548\n" );
if( scanning->sParam.PhyDpi.x <= 75 ) {
if( scanning->sParam.bDataType == SCANDATATYPE_Color )
scanning->sParam.dMCLK = dMCLK = 2.5;
else if(scanning->sParam.bDataType == SCANDATATYPE_Gray)
scanning->sParam.dMCLK = dMCLK = 7.0;
else
scanning->sParam.dMCLK = dMCLK = 7.0;
} else if( scanning->sParam.PhyDpi.x <= 300 ) {
if( scanning->sParam.bDataType == SCANDATATYPE_Color )
scanning->sParam.dMCLK = dMCLK = 3.0;
else if(scanning->sParam.bDataType == SCANDATATYPE_Gray)
scanning->sParam.dMCLK = dMCLK = 6.0;
else {
if( scanning->sParam.PhyDpi.x <= 100 )
scanning->sParam.dMCLK = dMCLK = 6.0;
else if( scanning->sParam.PhyDpi.x <= 200 )
scanning->sParam.dMCLK = dMCLK = 5.0;
else
scanning->sParam.dMCLK = dMCLK = 4.5;
}
} else if( scanning->sParam.PhyDpi.x <= 400 ) {
if( scanning->sParam.bDataType == SCANDATATYPE_Color )
scanning->sParam.dMCLK = dMCLK = 4.0;
else if( scanning->sParam.bDataType == SCANDATATYPE_Gray )
scanning->sParam.dMCLK = dMCLK = 6.0;
else
scanning->sParam.dMCLK = dMCLK = 4.0;
} else {
if(scanning->sParam.bDataType == SCANDATATYPE_Color)
scanning->sParam.dMCLK = dMCLK = 6.0;
else if(scanning->sParam.bDataType == SCANDATATYPE_Gray)
scanning->sParam.dMCLK = dMCLK = 7.0;
else
scanning->sParam.dMCLK = dMCLK = 6.0;
}
} else if( dev->usbDev.Caps.bPCB == 0x02 ) {
DBG( _DBG_INFO, "PCB - 0x02\n" );
if( scanning->sParam.PhyDpi.x > 300 )
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)? 6: 16);
else if( scanning->sParam.PhyDpi.x > 150 )
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)?4.5: 13.5);
else
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)?3: 8);
} else if( dev->usbDev.Caps.bButtons ) { /* with lens Shading piece (with gobo) */
DBG( _DBG_INFO, "CAPS - Buttons\n" );
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)?3: 6);
if( dev->usbDev.HwSetting.motorModel == MODEL_KaoHsiung ) {
if( dev->usbDev.Caps.bCCD == kNEC3799 ) {
if( scanning->sParam.PhyDpi.x > 300 )
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)? 6: 13);
else if(scanning->sParam.PhyDpi.x > 150)
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)?4.5: 13.5);
else
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)?3: 6);
} else {
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)?3: 6);
}
} else { /* motorModel == MODEL_Hualien */
/* IMPORTANT !!!!
* for Hualien 600 dpi scanner big noise
*/
hw->wLineEnd = 5384;
if(scanning->sParam.bDataType == SCANDATATYPE_Color &&
((scanning->sParam.bBitDepth == 8 && (scanning->sParam.PhyDpi.x == 200 || scanning->sParam.PhyDpi.x == 300))))
hw->wLineEnd = 7000;
a_bRegs[0x20] = _HIBYTE(hw->wLineEnd);
a_bRegs[0x21] = _LOBYTE(hw->wLineEnd);
if( scanning->sParam.PhyDpi.x > 300 ) {
if (scanning->sParam.bBitDepth > 8)
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)? 5: 13);
else
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)? 6: 13);
} else {
if( scanning->sParam.bBitDepth > 8 )
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)? 5: 13);
else
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)?3: 6);
}
}
} else { /* without lens Shading piece (without gobo) - Model U12 only */
DBG( _DBG_INFO, "Default trunc (U12)\n" );
if( scanning->sParam.PhyDpi.x > 300 )
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)? 3: 9);
else
scanning->sParam.dMCLK = dMCLK = ((scanning->sParam.bDataType == SCANDATATYPE_Color)? 2: 6);
}
} else { /* Device.Caps.OpticDpi.x == 1200 */
DBG( _DBG_INFO, "Default Shading (1200dpi)\n" );
if( scanning->sParam.bDataType != SCANDATATYPE_Color ) {
if( scanning->sParam.PhyDpi.x > 300 )
scanning->sParam.dMCLK = dMCLK = 6.0;
else {
scanning->sParam.dMCLK = dMCLK = 5.0;
a_bRegs[0x0a] = 1;
}
} else {
if( scanning->sParam.PhyDpi.x <= 300)
scanning->sParam.dMCLK = dMCLK = 2.0;
else if( scanning->sParam.PhyDpi.x <= 800 )
scanning->sParam.dMCLK = dMCLK = 4.0;
else
scanning->sParam.dMCLK = dMCLK = 5.5;
}
}
if (m_ScanParam.bSource == SOURCE_ADF)
m_dwIdealGain = IDEAL_GainPositive;
else
m_dwIdealGain = IDEAL_GainNormal;
DBG( _DBG_INFO, "Settings done, so start...\n" );
DBG( _DBG_INFO2, "###### ADJUST GAIN (COARSE)#######\n" );
if( !usb_AdjustGain(dev, 0)) {
DBG( _DBG_ERROR, "Coarse Calibration failed!!!\n" );
return _E_INTERNAL;
}
DBG( _DBG_INFO2, "###### ADJUST OFFSET (COARSE) ####\n" );
if( !usb_AdjustOffset(dev)) {
DBG( _DBG_ERROR, "Coarse Calibration failed!!!\n" );
return _E_INTERNAL;
}
DBG( _DBG_INFO2, "###### ADJUST DARK (FINE) ########\n" );
if( !usb_AdjustDarkShading(dev)) {
DBG( _DBG_ERROR, "Fine Calibration failed!!!\n" );
return _E_INTERNAL;
}
DBG( _DBG_INFO2, "###### ADJUST WHITE (FINE) #######\n" );
if( !usb_AdjustWhiteShading(dev)) {
DBG( _DBG_ERROR, "Fine Calibration failed!!!\n" );
return _E_INTERNAL;
}
break;
}
}
/*
* home the sensor after calibration
*/
if( _IS_PLUSTEKMOTOR(hw->motorModel)) {
if( hw->motorModel != MODEL_Tokyo600 ) {
usb_ModuleMove ( dev, MOVE_Forward, hw->wMotorDpi / 5 );
usb_ModuleToHome( dev, SANE_TRUE );
}
} else {
usb_ModuleMove( dev, MOVE_Forward, 1 );
usleep( 150 );
usb_ModuleToHome( dev, SANE_TRUE );
}
if( scanning->sParam.bSource == SOURCE_ADF ) {
if( scaps->bCCD == kNEC3778 )
usb_ModuleMove( dev, MOVE_Forward, 1000 );
else /* if( scaps->bCCD == kNEC3799) */
usb_ModuleMove( dev, MOVE_Forward, 3 * 300 + 38 );
usb_MotorOn( dev->fd, SANE_FALSE );
}
scanning->fCalibrated = SANE_TRUE;
DBG( _DBG_INFO, "Calibration done\n" );
DBG( _DBG_INFO, "-----------------------\n" );
DBG( _DBG_INFO, "Static Gain:\n" );
DBG( _DBG_INFO, "REG[0x3b] = %u\n", a_bRegs[0x3b] );
DBG( _DBG_INFO, "REG[0x3c] = %u\n", a_bRegs[0x3c] );
DBG( _DBG_INFO, "REG[0x3d] = %u\n", a_bRegs[0x3d] );
DBG( _DBG_INFO, "Static Offset:\n" );
DBG( _DBG_INFO, "REG[0x38] = %u\n", a_bRegs[0x38] );
DBG( _DBG_INFO, "REG[0x39] = %u\n", a_bRegs[0x39] );
DBG( _DBG_INFO, "REG[0x3a] = %u\n", a_bRegs[0x3a] );
DBG( _DBG_INFO, "-----------------------\n" );
return SANE_TRUE;
}
/** usb_DownloadShadingData
* according to the job id, different registers or DRAM areas are set
* in preparation for calibration or scanning
*/
static SANE_Bool usb_DownloadShadingData( pPlustek_Device dev, u_char bJobID )
{
u_char channel;
pDCapsDef scaps = &dev->usbDev.Caps;
pHWDef hw = &dev->usbDev.HwSetting;
DBG( _DBG_INFO2, "usb_DownloadShadingData(%u)\n", bJobID );
channel = CHANNEL_green;
if( hw->bReg_0x26 & _ONE_CH_COLOR )
channel = CHANNEL_blue;
switch( bJobID ) {
case PARAM_WhiteShading:
if( m_ScanParam.bDataType == SCANDATATYPE_Color ) {
usb_SetDarkShading( dev->fd, CHANNEL_red, a_wDarkShading,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
usb_SetDarkShading( dev->fd, CHANNEL_green, a_wDarkShading +
m_ScanParam.Size.dwPhyPixels,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
usb_SetDarkShading( dev->fd, CHANNEL_blue, a_wDarkShading +
m_ScanParam.Size.dwPhyPixels * 2,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
} else {
usb_SetDarkShading( dev->fd, channel, a_wDarkShading +
m_ScanParam.Size.dwPhyPixels,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
}
a_bRegs[0x40] = 0x40;
a_bRegs[0x41] = 0x00;
/* set RAM configuration AND
* Gain = Multiplier Coefficient/16384
* CFG Register 0x40/0x41 for Multiplier Coefficient Source
* External DRAM for Offset Coefficient Source
*/
a_bRegs[0x42] = (u_char)(( hw->wDRAMSize > 512)? 0x64: 0x24);
_UIO(sanei_lm983x_write( dev->fd, 0x40,
&a_bRegs[0x40], 0x42-0x40+1, SANE_TRUE ));
break;
case PARAM_Scan:
{
#if 0
if( scaps->workaroundFlag & _WAF_BYPASS_CALIBRATION ||
!(SCANDEF_QualityScan & dev->scanning.dwFlag)) {
#else
if( scaps->workaroundFlag & _WAF_BYPASS_CALIBRATION ) {
#endif
DBG( _DBG_INFO, "--> BYPASS\n" );
/* set RAM configuration AND
* Bypass Multiplier
* CFG Register 0x40/0x41 for Multiplier Coefficient Source
* CFG Register 0x3e/0x3f for Offset Coefficient Source
*/
a_bRegs[0x03] = 0;
a_bRegs[0x40] = 0x40;
a_bRegs[0x41] = 0x00;
a_bRegs[0x42] = (u_char)((hw->wDRAMSize > 512)? 0x61:0x21);
if( !usbio_WriteReg( dev->fd, 0x03, a_bRegs[0x03]))
return SANE_FALSE;
_UIO(sanei_lm983x_write( dev->fd, 0x40,
&a_bRegs[0x40], 3, SANE_TRUE));
break;
}
if( _LM9831 != hw->chip )
m_dwPixels = m_ScanParam.Size.dwPhyPixels;
if( scaps->workaroundFlag & _WAF_SKIP_FINE ) {
DBG( _DBG_INFO, "Skipping fine calibration\n" );
a_bRegs[0x42] = (u_char)(( hw->wDRAMSize > 512)? 0x60: 0x20);
if( !usbio_WriteReg( dev->fd, 0x42, a_bRegs[0x42]))
return SANE_FALSE;
break;
}
DBG( _DBG_INFO, "Downloading %lu pixels\n", m_dwPixels );
/* Download the dark & white shadings to LM983x */
if( pParam->bDataType == SCANDATATYPE_Color ) {
usb_SetDarkShading( dev->fd, CHANNEL_red, a_wDarkShading,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
usb_SetDarkShading( dev->fd, CHANNEL_green,
a_wDarkShading + m_dwPixels,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
usb_SetDarkShading( dev->fd, CHANNEL_blue,
a_wDarkShading + m_dwPixels * 2,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
} else {
usb_SetDarkShading( dev->fd, channel,
a_wDarkShading + m_dwPixels,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
}
if( pParam->bDataType == SCANDATATYPE_Color ) {
usb_SetWhiteShading( dev->fd, CHANNEL_red, a_wWhiteShading,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
usb_SetWhiteShading( dev->fd, CHANNEL_green,
a_wWhiteShading +
m_ScanParam.Size.dwPhyPixels,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
usb_SetWhiteShading( dev->fd, CHANNEL_blue,
a_wWhiteShading +
m_ScanParam.Size.dwPhyPixels * 2,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
} else {
usb_SetWhiteShading( dev->fd, channel, a_wWhiteShading,
(u_short)m_ScanParam.Size.dwPhyPixels * 2);
}
/* set RAM configuration AND
* Gain = Multiplier Coefficient/16384
* External DRAM for Multiplier Coefficient Source
* External DRAM for Offset Coefficient Source
*/
a_bRegs[0x42] = (u_char)((hw->wDRAMSize > 512)? 0x66: 0x26);
if( scaps->workaroundFlag & _WAF_SKIP_WHITEFINE ) {
DBG( _DBG_INFO,"Skipping fine white calibration result\n");
a_bRegs[0x42] = (u_char)(( hw->wDRAMSize > 512)? 0x64: 0x24);
}
if( !usbio_WriteReg( dev->fd, 0x42, a_bRegs[0x42]))
return SANE_FALSE;
}
break;
default:
/* for coarse calibration and "black fine" */
a_bRegs[0x3e] = 0;
a_bRegs[0x3f] = 0;
a_bRegs[0x40] = 0x40;
a_bRegs[0x41] = 0x00;
/* set RAM configuration AND
* GAIN = Multiplier Coefficient/16384
* CFG Register 0x40/0x41 for Multiplier Coefficient Source
* CFG Register 0x3e/0x3f for Offset Coefficient Source
*/
a_bRegs[0x42] = (u_char)((hw->wDRAMSize > 512)? 0x60: 0x20);
_UIO(sanei_lm983x_write( dev->fd, 0x3e, &a_bRegs[0x3e],
0x42 - 0x3e + 1, SANE_TRUE ));
break;
}
return SANE_TRUE;
}
/* END PLUSTEK-USBSHADING.C .................................................*/
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