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sane-project-backends/backend/u12-shading.c

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26 KiB
C
Czysty Wina Historia

/* @file u12-shading.c -
* @brief all the shading functions
*
* based on sources acquired from Plustek Inc.
* Copyright (C) 2003-2004 Gerhard Jaeger <gerhard@gjaeger.de>
*
* History:
* - 0.01 - initial version
* - 0.02 -
* .
* <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, see <https://www.gnu.org/licenses/>.
*
* 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>
*/
#define _GAIN_HIGH 240 /* Volt. max. value */
#define _GAIN_LOW 220 /* Volt. min. value */
#define _CHANNEL_RED 0
#define _CHANNEL_GREEN 1
#define _CHANNEL_BLUE 2
/* for DAC programming */
#define _VALUE_CONFIG 0x51
#define _DAC_RED (SANE_Byte)(_VALUE_CONFIG | 0x00)
#define _DAC_GREENCOLOR (SANE_Byte)(_VALUE_CONFIG | 0x04)
#define _DAC_GREENMONO (SANE_Byte)(_VALUE_CONFIG | 0x06)
#define _DAC_BLUE (SANE_Byte)(_VALUE_CONFIG | 0x08)
/* forward declarations ... */
static void u12tpa_Reshading( U12_Device * );
static void u12tpa_FindCenterPointer( U12_Device * );
/**
*/
static void
u12shading_DownloadShadingTable( U12_Device *dev, SANE_Byte *buf, u_long len )
{
SANE_Byte *val, *rb;
SANE_Byte reg, regs[20];
int c;
DBG( _DBG_INFO, "u12shading_DownloadShadingTable()\n" );
u12io_DataToRegister( dev, REG_MODECONTROL, _ModeShadingMem );
u12io_DataToRegister( dev, REG_MEMORYLO, 0 );
u12io_DataToRegister( dev, REG_MEMORYHI, 0 );
/* set 12 bits output color */
u12io_DataToRegister( dev, REG_SCANCONTROL,
(SANE_Byte)(dev->regs.RD_ScanControl | _SCAN_12BITMODE));
u12io_MoveDataToScanner( dev, buf, len );
regs[0] = REG_MODECONTROL;
regs[1] = _ModeScan;
/* FillShadingDarkToShadingRegister() */
dev->regs.RD_RedDarkOff = dev->shade.DarkOffset.Colors.Red;
dev->regs.RD_GreenDarkOff = dev->shade.DarkOffset.Colors.Green;
dev->regs.RD_BlueDarkOff = dev->shade.DarkOffset.Colors.Blue;
val = (SANE_Byte*)&dev->regs.RD_RedDarkOff;
rb = &regs[2];
c = 1;
for( reg = REG_REDCHDARKOFFSETLO;
reg <= REG_BLUECHDARKOFFSETHI; reg++, val++) {
*(rb++) = reg;
*(rb++) = *val;
c++;
}
u12io_DataToRegs( dev, regs, c );
}
/**
*/
static SANE_Status u12shadingAdjustShadingWaveform( U12_Device *dev )
{
SANE_Byte b;
u_short count, wR, wG, wB, tmp;
DataType var;
DataPointer pvar, psum;
RBGPtrDef cp;
RGBUShortDef *pRGB, *pwsum;
u_long shadingBytes;
DBG( _DBG_INFO, "u12shading_AdjustShadingWaveForm()\n" );
memset( &cp, 0, sizeof(RBGPtrDef));
memset( dev->bufs.b2.pSumBuf, 0, (5400 * 3 * 2));
u12io_DataToRegister( dev, REG_MODECONTROL, _ModeIdle );
dev->regs.RD_LineControl = _LOBYTE(dev->shade.wExposure);
dev->regs.RD_ExtLineControl = _HIBYTE(dev->shade.wExposure);
u12io_DataToRegister( dev, REG_EXTENDEDLINECONTROL,
dev->regs.RD_ExtLineControl );
u12io_DataToRegister( dev, REG_LINECONTROL, dev->regs.RD_LineControl );
dev->regs.RD_XStepTime = _LOBYTE(dev->shade.wExposure);
dev->regs.RD_ExtXStepTime = _HIBYTE(dev->shade.wExposure);
u12io_DataToRegister( dev, REG_EXTENDEDXSTEP, dev->regs.RD_ExtXStepTime );
u12io_DataToRegister( dev, REG_XSTEPTIME, dev->regs.RD_XStepTime );
dev->regs.RD_ModeControl = _ModeScan;
dev->regs.RD_StepControl = _MOTOR0_SCANSTATE;
dev->regs.RD_Motor0Control = _FORWARD_MOTOR;
if( dev->shade.intermediate & _ScanMode_AverageOut ) {
dev->regs.RD_Dpi = 300;
dev->regs.RD_Pixels = 2700;
shadingBytes = 2700 * 2;
} else {
dev->regs.RD_Dpi = 600;
dev->regs.RD_Pixels = 5400;
shadingBytes = 5400 * 2;
}
dev->regs.RD_Origin = _SHADING_BEGINX;
for( pvar.pdw = (u_long*)dev->scanStates,
var.dwValue = _SCANSTATE_BYTES >> 2; var.dwValue--; pvar.pdw++) {
*pvar.pdw = 0x00f00080;
}
dev->scan.refreshState = SANE_FALSE;
u12io_PutOnAllRegisters( dev );
/* _DODELAY( 100 ); */
if( dev->shade.pHilight ) {
memset( dev->shade.pHilight, 0,
shadingBytes * dev->shade.skipHilight * 3 );
memset((SANE_Byte*)dev->shade.pHilight +
shadingBytes * dev->shade.skipHilight * 3, 0xff,
shadingBytes * dev->shade.skipShadow * 3 );
}
for( count = 32; count--; ) {
if( u12io_IsEscPressed()) {
DBG( _DBG_INFO, "* CANCEL detected!\n" );
return SANE_STATUS_CANCELLED;
}
u12io_ReadOneShadingLine( dev, ((SANE_Byte*)dev->bufs.b1.pShadingRam)+
_SHADING_BEGINX, shadingBytes );
if( dev->shade.pHilight ) {
if ( dev->DataInf.wPhyDataType > COLOR_256GRAY ) {
cp.red.usp = dev->bufs.b1.pShadingRam + _SHADING_BEGINX;
cp.green.usp = cp.red.usp + dev->regs.RD_Pixels;
cp.blue.usp = cp.green.usp + dev->regs.RD_Pixels;
pvar.pusrgb = (RGBUShortDef*)dev->shade.pHilight +
_SHADING_BEGINX;
for( var.dwValue = dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--;) {
pRGB = pvar.pusrgb++;
wR = *cp.red.usp;
wG = *cp.green.usp;
wB = *cp.blue.usp;
for( b = dev->shade.skipHilight; b--;
pRGB += dev->regs.RD_Pixels ) {
if( wR > pRGB->Red ) {
tmp = wR;
wR = pRGB->Red;
pRGB->Red = tmp;
}
if( wG > pRGB->Green ) {
tmp = wG;
wG = pRGB->Green;
pRGB->Green = tmp;
}
if( wB > pRGB->Blue ) {
tmp = wB;
wB = pRGB->Blue;
pRGB->Blue = tmp;
}
}
wR = *cp.red.usp++;
wG = *cp.green.usp++;
wB = *cp.blue.usp++;
for( b = dev->shade.skipShadow; b--;
pRGB += dev->regs.RD_Pixels ) {
if( wR < pRGB->Red ) {
tmp = wR;
wR = pRGB->Red;
pRGB->Red = tmp;
}
if( wG < pRGB->Green ) {
tmp = wG;
wG = pRGB->Green;
pRGB->Green = tmp;
}
if( wB < pRGB->Blue ) {
tmp = wB;
wB = pRGB->Blue;
pRGB->Blue = tmp;
}
}
}
} else {
cp.green.usp = dev->bufs.b1.pShadingRam +
dev->regs.RD_Pixels + _SHADING_BEGINX;
cp.blue.usp = (u_short*)dev->shade.pHilight + _SHADING_BEGINX;
for( var.dwValue = dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--;) {
cp.red.usp = cp.blue.usp++;
wG = *cp.green.usp;
for( b = dev->shade.skipHilight; b--;
cp.red.usp += dev->regs.RD_Pixels) {
if( wG > *cp.red.usp ) {
tmp = wG;
wG = *cp.red.usp;
*cp.red.usp = tmp;
}
}
wG = *cp.green.usp++;
for( b = dev->shade.skipShadow; b--;
cp.red.usp += dev->regs.RD_Pixels ) {
if( wG < *cp.red.usp ) {
tmp = wG;
wG = *cp.red.usp;
*cp.red.usp = tmp;
}
}
}
}
}
/* AddToSumBuffer() */
if( dev->DataInf.wPhyDataType > COLOR_256GRAY ) {
cp.red.usp = dev->bufs.b1.pShadingRam + _SHADING_BEGINX;
cp.green.usp = cp.red.usp + dev->regs.RD_Pixels;
cp.blue.usp = cp.green.usp + dev->regs.RD_Pixels;
pvar.pulrgb = (RGBULongDef*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
for( var.dwValue = (u_long)dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--;
pvar.pulrgb++, cp.red.usp++, cp.green.usp++, cp.blue.usp++) {
pvar.pulrgb->Red += (u_long)*cp.red.usp;
pvar.pulrgb->Green += (u_long)*cp.green.usp;
pvar.pulrgb->Blue += (u_long)*cp.blue.usp;
}
} else {
cp.green.usp = dev->bufs.b1.pShadingRam +
dev->regs.RD_Pixels + _SHADING_BEGINX;
pvar.pdw = (u_long*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
for( var.dwValue = (u_long)dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--; pvar.pdw++, cp.green.usp++) {
*pvar.pdw += (u_long)*cp.green.usp;
}
}
u12io_ResetFifoLen();
if( u12io_GetFifoLength( dev ) < dev->regs.RD_Pixels )
u12io_RegisterToScanner( dev, REG_REFRESHSCANSTATE );
}
/* AverageAfterSubHilightShadow() */
if( dev->shade.pHilight ) {
if( dev->DataInf.wPhyDataType > COLOR_256GRAY ) {
psum.pulrgb = (RGBULongDef*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
pwsum = (RGBUShortDef*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
pvar.pusrgb = (RGBUShortDef*)dev->shade.pHilight + _SHADING_BEGINX;
for( var.dwValue = dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--;) {
pRGB = pvar.pusrgb++;
for( b = dev->shade.skipHilight + dev->shade.skipShadow;
b--; pRGB += dev->regs.RD_Pixels ) {
psum.pulrgb->Red -= (u_long)pRGB->Red;
psum.pulrgb->Green -= (u_long)pRGB->Green;
psum.pulrgb->Blue -= (u_long)pRGB->Blue;
}
pwsum->Red = (u_short)(psum.pulrgb->Red / dev->shade.dwDiv);
pwsum->Green = (u_short)(psum.pulrgb->Green / dev->shade.dwDiv);
pwsum->Blue = (u_short)(psum.pulrgb->Blue / dev->shade.dwDiv);
psum.pulrgb++;
pwsum++;
}
} else {
cp.green.ulp = (u_long*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
cp.blue.usp = (u_short*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
pvar.pw = (u_short*)dev->shade.pHilight + _SHADING_BEGINX;
for( var.dwValue = dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--;) {
cp.red.usp = pvar.pw++;
for( b = dev->shade.skipHilight + dev->shade.skipShadow;
b--; cp.red.usp += dev->regs.RD_Pixels )
*cp.green.ulp -= *cp.red.usp;
*cp.blue.usp = (u_short)(*cp.green.ulp / dev->shade.dwDiv);
cp.blue.usp++;
cp.green.ulp++;
}
}
} else {
if( dev->DataInf.wPhyDataType > COLOR_256GRAY ) {
psum.pulrgb = (RGBULongDef*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
pwsum = (RGBUShortDef*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
for( var.dwValue = dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--;) {
pwsum->Red = (u_short)(psum.pulrgb->Red >> 5);
pwsum->Green = (u_short)(psum.pulrgb->Green >> 5);
pwsum->Blue = (u_short)(psum.pulrgb->Blue >> 5);
psum.pulrgb++;
pwsum++;
}
} else {
cp.green.ulp = (u_long*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
cp.blue.usp = (u_short*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
for( var.dwValue = dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--;) {
*cp.blue.usp = (u_short)(*cp.green.ulp >> 5);
cp.blue.usp++;
cp.green.ulp++;
}
}
}
/* Process negative & transparency here */
if( dev->DataInf.dwScanFlag & _SCANDEF_TPA )
u12tpa_FindCenterPointer( dev );
if( dev->DataInf.dwScanFlag & _SCANDEF_Negative )
u12tpa_Reshading( dev );
pRGB = (RGBUShortDef*)&dev->shade.pCcdDac->GainResize;
if ( dev->DataInf.wPhyDataType > COLOR_256GRAY ) {
pwsum = (RGBUShortDef*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
for( var.dwValue = dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--;) {
if ((short)(pwsum->Red -= dev->shade.DarkOffset.Colors.Red) > 0) {
pwsum->Red = pwsum->Red * pRGB->Red / 100U;
if( pwsum->Red > 0xfff )
pwsum->Red = 0xfff;
} else
pwsum->Red = 0;
if((short)(pwsum->Green -= dev->shade.DarkOffset.Colors.Green) > 0) {
pwsum->Green = pwsum->Green * pRGB->Green / 100U;
if( pwsum->Green > 0xfff )
pwsum->Green = 0xfff;
} else
pwsum->Green = 0;
if ((short)(pwsum->Blue -= dev->shade.DarkOffset.Colors.Blue) > 0) {
pwsum->Blue = pwsum->Blue * pRGB->Blue / 100U;
if( pwsum->Blue > 0xfff )
pwsum->Blue = 0xfff;
} else
pwsum->Blue = 0;
wR = (u_short)(pwsum->Red >> 4);
pwsum->Red <<= 12;
pwsum->Red |= wR;
wR = (u_short)(pwsum->Green >> 4);
pwsum->Green <<= 12;
pwsum->Green |= wR;
wR = (u_short)(pwsum->Blue>> 4);
pwsum->Blue <<= 12;
pwsum->Blue |= wR;
pwsum++;
}
} else {
cp.green.usp = (u_short*)dev->bufs.b2.pSumBuf + _SHADING_BEGINX;
for( var.dwValue = dev->regs.RD_Pixels - _SHADING_BEGINX;
var.dwValue--;) {
if((short)(*cp.green.usp -= dev->shade.DarkOffset.Colors.Green) > 0) {
*cp.green.usp = *cp.green.usp * pRGB->Green / 100U;
if( *cp.green.usp > 0xfff )
*cp.green.usp = 0xfff;
} else
*cp.green.usp = 0;
wR = (u_short)(*cp.green.usp >> 4);
*cp.green.usp <<= 12;
*cp.green.usp |= wR;
cp.green.usp++;
}
}
u12shading_DownloadShadingTable(dev, dev->bufs.b2.pSumBuf, (5400 * 3 * 2));
return SANE_STATUS_GOOD;
}
/**
*/
static void u12shading_GainOffsetToDAC( U12_Device *dev, SANE_Byte ch,
SANE_Byte reg, SANE_Byte d )
{
if( dev->DACType == _DA_SAMSUNG8531 ) {
u12io_DataRegisterToDAC( dev, 0, ch );
}
u12io_DataRegisterToDAC( dev, reg, d );
}
/**
*/
static void u12shading_FillToDAC( U12_Device *dev,
RGBByteDef *regs, ColorByte *data )
{
if( dev->DataInf.wPhyDataType > COLOR_256GRAY ) {
u12shading_GainOffsetToDAC(dev, _DAC_RED, regs->Red, data->Colors.Red);
u12shading_GainOffsetToDAC(dev, _DAC_GREENCOLOR,
regs->Green, data->Colors.Green);
u12shading_GainOffsetToDAC(dev, _DAC_BLUE,
regs->Blue, data->Colors.Blue);
} else {
u12shading_GainOffsetToDAC(dev, _DAC_GREENMONO, regs->Green,
data->Colors.Green);
}
}
/**
*/
static SANE_Byte u12shading_SumGains( SANE_Byte *pb, u_long pixelsLine )
{
SANE_Byte hilight, tmp;
u_long dwPixels, dwAve;
u_short sum;
hilight = 0;
for( dwPixels = pixelsLine >> 4; dwPixels--; ) {
for( sum = 0, dwAve = 16; dwAve--; pb++ )
sum += (u_short)*pb;
sum >>= 4;
tmp = (SANE_Byte)sum;
if( tmp > hilight )
hilight = tmp;
}
return hilight;
}
/**
*/
static void
u12shading_AdjustGain( U12_Device *dev, u_long color, SANE_Byte hilight )
{
if( hilight < dev->shade.bGainLow ) {
if( dev->shade.Hilight.bColors[color] < dev->shade.bGainHigh ) {
dev->shade.fStop = SANE_FALSE;
dev->shade.Hilight.bColors[color] = hilight;
if( hilight <= (SANE_Byte)(dev->shade.bGainLow - hilight))
dev->shade.Gain.bColors[color] += dev->shade.bGainDouble;
else
dev->shade.Gain.bColors[color]++;
}
} else {
if( hilight > dev->shade.bGainHigh ) {
dev->shade.fStop = SANE_FALSE;
dev->shade.Hilight.bColors[color] = hilight;
dev->shade.Gain.bColors[color]--;
} else {
dev->shade.Hilight.bColors[color] = hilight;
}
}
if( dev->shade.Gain.bColors[color] > dev->shade.bMaxGain ) {
dev->shade.Gain.bColors[color] = dev->shade.bMaxGain;
}
}
/**
*/
static SANE_Status u12shading_AdjustRGBGain( U12_Device *dev )
{
int i;
SANE_Byte hi[3];
DBG( _DBG_INFO, "u12shading_AdjustRGBGain()\n" );
dev->shade.Gain.Colors.Red =
dev->shade.Gain.Colors.Green =
dev->shade.Gain.Colors.Blue = dev->shade.bUniGain;
dev->shade.Hilight.Colors.Red =
dev->shade.Hilight.Colors.Green =
dev->shade.Hilight.Colors.Blue = 0;
dev->shade.bGainHigh = _GAIN_HIGH;
dev->shade.bGainLow = _GAIN_LOW;
dev->shade.fStop = SANE_FALSE;
for( i = 10; i-- && !dev->shade.fStop; ) {
if( u12io_IsEscPressed()) {
DBG( _DBG_INFO, "* CANCEL detected!\n" );
return SANE_STATUS_CANCELLED;
}
dev->shade.fStop = SANE_TRUE;
u12io_DataToRegister( dev, REG_MODECONTROL, _ModeIdle );
dev->regs.RD_ScanControl = _SCAN_BYTEMODE;
u12hw_SelectLampSource( dev );
u12io_DataToRegister( dev, REG_SCANCONTROL, dev->regs.RD_ScanControl );
u12shading_FillToDAC( dev, &dev->RegDACGain, &dev->shade.Gain );
dev->regs.RD_ModeControl = _ModeScan;
dev->regs.RD_StepControl = _MOTOR0_SCANSTATE;
dev->regs.RD_Motor0Control = _FORWARD_MOTOR;
if( dev->shade.intermediate & _ScanMode_AverageOut )
dev->regs.RD_Origin = (u_short)_DATA_ORIGIN_X >> 1;
else
dev->regs.RD_Origin = (u_short)_DATA_ORIGIN_X;
dev->regs.RD_Dpi = 300;
dev->regs.RD_Pixels = 2560;
memset( dev->scanStates, 0, _SCANSTATE_BYTES );
dev->scanStates[1] = 0x77;
u12io_PutOnAllRegisters( dev );
/* _DODELAY( 100 ); */
/* read one shading line and work on it */
if( u12io_ReadOneShadingLine( dev,
(SANE_Byte*)dev->bufs.b1.pShadingRam, 2560)) {
if( dev->DataInf.wPhyDataType <= COLOR_256GRAY ) {
hi[1] = u12shading_SumGains(
(SANE_Byte*)dev->bufs.b1.pShadingRam + 2560, 2560);
if( hi[1] ) {
u12shading_AdjustGain( dev, _CHANNEL_GREEN, hi[1] );
} else {
dev->shade.fStop = SANE_FALSE;
}
} else {
hi[0] = u12shading_SumGains(
(SANE_Byte*)dev->bufs.b1.pShadingRam, 2560);
hi[1] = u12shading_SumGains(
(SANE_Byte*)dev->bufs.b1.pShadingRam + 2560, 2560);
hi[2] = u12shading_SumGains(
(SANE_Byte*)dev->bufs.b1.pShadingRam + 5120, 2560);
if (!hi[0] || !hi[1] || !hi[2] ) {
dev->shade.fStop = SANE_FALSE;
} else {
u12shading_AdjustGain( dev, _CHANNEL_RED, hi[0] );
u12shading_AdjustGain( dev, _CHANNEL_GREEN, hi[1] );
u12shading_AdjustGain( dev, _CHANNEL_BLUE, hi[2] );
}
}
} else
dev->shade.fStop = SANE_FALSE;
}
if( !dev->shade.fStop )
DBG( _DBG_INFO, "u12shading_AdjustRGBGain() - all loops done!!!\n" );
u12shading_FillToDAC( dev, &dev->RegDACGain, &dev->shade.Gain );
return SANE_STATUS_GOOD;
}
/**
*/
static u_short u12shading_SumDarks( U12_Device *dev, u_short *data )
{
u_short i, loop;
if( dev->CCDID == _CCD_3799 ) {
if( dev->shade.intermediate & _ScanMode_AverageOut )
data += 0x18;
else
data += 0x30;
} else {
if( dev->shade.intermediate & _ScanMode_AverageOut )
data += 0x18;
else
data += 0x20;
}
for( i = 0, loop = 16; loop--; data++ )
i += *data;
i >>= 4;
return i;
}
/**
*/
static SANE_Status u12shadingAdjustDark( U12_Device *dev )
{
u_long i;
u_short wDarks[3];
DBG( _DBG_INFO, "u12shadingAdjustDark()\n" );
dev->shade.DarkDAC.Colors = dev->shade.pCcdDac->DarkDAC.Colors;
dev->shade.fStop = SANE_FALSE;
for( i = 16; i-- && !dev->shade.fStop;) {
if( u12io_IsEscPressed()) {
DBG( _DBG_INFO, "* CANCEL detected!\n" );
return SANE_STATUS_CANCELLED;
}
dev->shade.fStop = SANE_TRUE;
u12shading_FillToDAC( dev, &dev->RegDACOffset, &dev->shade.DarkDAC );
u12io_DataToRegister( dev, REG_MODECONTROL, _ModeIdle );
dev->regs.RD_ScanControl = (_SCAN_12BITMODE + _SCAN_1ST_AVERAGE);
u12hw_SelectLampSource( dev );
u12io_DataToRegister( dev, REG_SCANCONTROL, dev->regs.RD_ScanControl );
dev->regs.RD_StepControl = _MOTOR0_SCANSTATE;
dev->regs.RD_Motor0Control = _FORWARD_MOTOR;
dev->regs.RD_Origin = _SHADING_BEGINX;
dev->regs.RD_Pixels = 512;
if( dev->shade.intermediate & _ScanMode_AverageOut )
dev->regs.RD_Dpi = 300;
else
dev->regs.RD_Dpi = 600;
memset( dev->scanStates, 0, _SCANSTATE_BYTES );
dev->scanStates[1] = 0x77;
u12io_PutOnAllRegisters( dev );
/* _DODELAY( 100 ); */
/* read one shading line and work on it */
if( u12io_ReadOneShadingLine(dev,
(SANE_Byte*)dev->bufs.b1.pShadingRam, 512*2)) {
if ( dev->DataInf.wPhyDataType > COLOR_256GRAY ) {
wDarks[0] = u12shading_SumDarks(dev, dev->bufs.b1.pShadingRam);
wDarks[1] = u12shading_SumDarks(dev, dev->bufs.b1.pShadingRam +
dev->regs.RD_Pixels );
wDarks[2] = u12shading_SumDarks(dev, dev->bufs.b1.pShadingRam +
dev->regs.RD_Pixels * 2UL);
if( !wDarks[0] || !wDarks[1] || !wDarks[2] ) {
dev->shade.fStop = SANE_FALSE;
} else {
dev->shade.DarkOffset.wColors[0] = wDarks[0];
dev->shade.DarkOffset.wColors[1] = wDarks[1];
dev->shade.DarkOffset.wColors[2] = wDarks[2];
(*dev->fnDACDark)( dev,dev->shade.pCcdDac,
_CHANNEL_RED, wDarks[0] );
(*dev->fnDACDark)( dev, dev->shade.pCcdDac,
_CHANNEL_GREEN, wDarks[1] );
(*dev->fnDACDark)( dev, dev->shade.pCcdDac,
_CHANNEL_BLUE, wDarks[2] );
}
} else {
wDarks[1] = u12shading_SumDarks(dev, dev->bufs.b1.pShadingRam +
dev->regs.RD_Pixels );
if(!wDarks[1] ) {
dev->shade.fStop = SANE_FALSE;
} else {
dev->shade.DarkOffset.wColors[1] = wDarks[1];
(*dev->fnDACDark)( dev, dev->shade.pCcdDac,
_CHANNEL_GREEN, wDarks[1] );
}
}
} else {
dev->shade.fStop = SANE_FALSE;
}
}
/* CalculateDarkDependOnCCD() */
if ( dev->DataInf.wPhyDataType > COLOR_256GRAY ) {
(*dev->fnDarkOffset)( dev, dev->shade.pCcdDac, _CHANNEL_RED );
(*dev->fnDarkOffset)( dev, dev->shade.pCcdDac, _CHANNEL_GREEN );
(*dev->fnDarkOffset)( dev, dev->shade.pCcdDac, _CHANNEL_BLUE );
} else {
(*dev->fnDarkOffset)( dev, dev->shade.pCcdDac, _CHANNEL_GREEN );
}
return SANE_STATUS_GOOD;
}
/** here we download the current mapping table
*/
static void u12shading_DownloadMapTable( U12_Device *dev, SANE_Byte *buf )
{
SANE_Byte addr, regs[6];
int i;
u12io_DataToRegister( dev, REG_SCANCONTROL,
(SANE_Byte)((dev->regs.RD_ScanControl & 0xfc) | _SCAN_BYTEMODE));
/* prepare register settings... */
regs[0] = REG_MODECONTROL;
regs[1] = _ModeMappingMem;
regs[2] = REG_MEMORYLO;
regs[3] = 0;
regs[4] = REG_MEMORYHI;
for( i = 3, addr = _MAP_ADDR_RED; i--; addr += _MAP_ADDR_SIZE ) {
regs[5] = addr;
u12io_DataToRegs( dev, regs, 3 );
u12io_MoveDataToScanner( dev, buf, 4096 );
buf += 4096;
}
u12io_DataToRegister( dev, REG_SCANCONTROL, dev->regs.RD_ScanControl );
}
/**
*/
static SANE_Status u12shading_DoCalibration( U12_Device *dev )
{
SANE_Byte tb[4096*3];
u_long i, tmp;
SANE_Byte bScanControl, rb[20];
SANE_Status res;
int c;
DBG( _DBG_INFO, "u12shading_DoCalibration()\n" );
/** before getting the shading data, (re)init the ASIC
*/
u12hw_InitAsic( dev, SANE_TRUE );
dev->shade.DarkOffset.Colors.Red = 0;
dev->shade.DarkOffset.Colors.Green = 0;
dev->shade.DarkOffset.Colors.Blue = 0;
c = 0;
_SET_REG( rb, c, REG_RESETMTSC, 0 );
_SET_REG( rb, c, REG_MODELCONTROL, dev->regs.RD_ModelControl);
_SET_REG( rb, c, REG_MOTORDRVTYPE, dev->regs.RD_MotorDriverType );
_SET_REG( rb, c, REG_SCANCONTROL1, (_SCANSTOPONBUFFULL| _MFRC_BY_XSTEP));
u12io_DataToRegs( dev, rb, c );
res = u12motor_GotoShadingPosition( dev );
if( SANE_STATUS_GOOD != res )
return res;
bScanControl = dev->regs.RD_ScanControl;
/* SetShadingMapForGainDark */
memset( dev->bufs.b2.pSumBuf, 0xff, (5400 * 3 * 2));
u12shading_DownloadShadingTable( dev, dev->bufs.b2.pSumBuf, (5400*3*2));
for( i = 0, tmp = 0; i < 1024; tmp += 0x01010101, i += 4 ) {
dev->bufs.b1.Buf.pdw[i] =
dev->bufs.b1.Buf.pdw[i+1] =
dev->bufs.b1.Buf.pdw[i+2] =
dev->bufs.b1.Buf.pdw[i+3] = tmp;
}
memcpy( dev->bufs.b1.pShadingMap + 4096, dev->bufs.b1.pShadingMap, 4096 );
memcpy( dev->bufs.b1.pShadingMap + 8192, dev->bufs.b1.pShadingMap, 4096 );
u12shading_DownloadMapTable( dev, dev->bufs.b1.pShadingMap );
DBG( _DBG_INFO, "* wExposure = %u\n", dev->shade.wExposure);
DBG( _DBG_INFO, "* wXStep = %u\n", dev->shade.wXStep);
dev->regs.RD_LineControl = (_LOBYTE(dev->shade.wExposure));
dev->regs.RD_ExtLineControl = (_HIBYTE(dev->shade.wExposure));
u12io_DataToRegister( dev, REG_EXTENDEDLINECONTROL,
dev->regs.RD_ExtLineControl );
u12io_DataToRegister( dev, REG_LINECONTROL, dev->regs.RD_LineControl );
res = u12shading_AdjustRGBGain( dev );
if( SANE_STATUS_GOOD != res )
return res;
res = u12shadingAdjustDark( dev );
if( SANE_STATUS_GOOD != res )
return res;
res = u12shadingAdjustShadingWaveform( dev );
if( SANE_STATUS_GOOD != res )
return res;
dev->regs.RD_ScanControl = bScanControl;
/* here we have to prepare and download the table in any case...*/
if( dev->DataInf.wPhyDataType <= COLOR_256GRAY ) {
u12map_Adjust( dev, _MAP_MASTER, tb );
} else {
u12map_Adjust( dev, _MAP_RED, tb );
u12map_Adjust( dev, _MAP_GREEN, tb );
u12map_Adjust( dev, _MAP_BLUE, tb );
}
u12shading_DownloadMapTable( dev, tb );
u12motor_BackToHomeSensor( dev );
DBG( _DBG_INFO, "u12shading_DoCalibration() - done.\n" );
return SANE_STATUS_GOOD;
}
/* END U12-SHADING ..........................................................*/
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