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sane-project-backends/backend/genesys_gl841.cc

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/* sane - Scanner Access Now Easy.
Copyright (C) 2003 Oliver Rauch
Copyright (C) 2003, 2004 Henning Meier-Geinitz <henning@meier-geinitz.de>
Copyright (C) 2004 Gerhard Jaeger <gerhard@gjaeger.de>
Copyright (C) 2004-2013 Stéphane Voltz <stef.dev@free.fr>
Copyright (C) 2005 Philipp Schmid <philipp8288@web.de>
Copyright (C) 2005-2009 Pierre Willenbrock <pierre@pirsoft.dnsalias.org>
Copyright (C) 2006 Laurent Charpentier <laurent_pubs@yahoo.com>
Copyright (C) 2010 Chris Berry <s0457957@sms.ed.ac.uk> and Michael Rickmann <mrickma@gwdg.de>
for Plustek Opticbook 3600 support
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.
*/
#define DEBUG_DECLARE_ONLY
#include "genesys_gl841.h"
#include <vector>
/****************************************************************************
Low level function
****************************************************************************/
/* ------------------------------------------------------------------------ */
/* Read and write RAM, registers and AFE */
/* ------------------------------------------------------------------------ */
// Set address for writing data
static void gl841_set_buffer_address_gamma(Genesys_Device* dev, uint32_t addr)
{
DBG_HELPER_ARGS(dbg, "setting address to 0x%05x", addr & 0xfffffff0);
addr = addr >> 4;
dev->write_register(0x5c, (addr & 0xff));
addr = addr >> 8;
dev->write_register(0x5b, (addr & 0xff));
}
/****************************************************************************
Mid level functions
****************************************************************************/
static SANE_Bool
gl841_get_fast_feed_bit (Genesys_Register_Set * regs)
{
GenesysRegister *r = NULL;
r = sanei_genesys_get_address (regs, 0x02);
if (r && (r->value & REG02_FASTFED))
return SANE_TRUE;
return SANE_FALSE;
}
static SANE_Bool
gl841_get_filter_bit (Genesys_Register_Set * regs)
{
GenesysRegister *r = NULL;
r = sanei_genesys_get_address (regs, 0x04);
if (r && (r->value & REG04_FILTER))
return SANE_TRUE;
return SANE_FALSE;
}
static SANE_Bool
gl841_get_lineart_bit (Genesys_Register_Set * regs)
{
GenesysRegister *r = NULL;
r = sanei_genesys_get_address (regs, 0x04);
if (r && (r->value & REG04_LINEART))
return SANE_TRUE;
return SANE_FALSE;
}
static SANE_Bool
gl841_get_bitset_bit (Genesys_Register_Set * regs)
{
GenesysRegister *r = NULL;
r = sanei_genesys_get_address (regs, 0x04);
if (r && (r->value & REG04_BITSET))
return SANE_TRUE;
return SANE_FALSE;
}
static SANE_Bool
gl841_get_gain4_bit (Genesys_Register_Set * regs)
{
GenesysRegister *r = NULL;
r = sanei_genesys_get_address (regs, 0x06);
if (r && (r->value & REG06_GAIN4))
return SANE_TRUE;
return SANE_FALSE;
}
static SANE_Bool
gl841_test_buffer_empty_bit (SANE_Byte val)
{
if (val & REG41_BUFEMPTY)
return SANE_TRUE;
return SANE_FALSE;
}
static SANE_Bool
gl841_test_motor_flag_bit (SANE_Byte val)
{
if (val & REG41_MOTORENB)
return SANE_TRUE;
return SANE_FALSE;
}
/** copy sensor specific settings */
/* *dev : device infos
*regs : registers to be set
extended : do extended set up
ccd_size_divisor: set up for half ccd resolution
all registers 08-0B, 10-1D, 52-59 are set up. They shouldn't
appear anywhere else but in register_ini
Responsible for signals to CCD/CIS:
CCD_CK1X (CK1INV(0x16),CKDIS(0x16),CKTOGGLE(0x18),CKDELAY(0x18),MANUAL1(0x1A),CK1MTGL(0x1C),CK1LOW(0x1D),CK1MAP(0x74,0x75,0x76),CK1NEG(0x7D))
CCD_CK2X (CK2INV(0x16),CKDIS(0x16),CKTOGGLE(0x18),CKDELAY(0x18),MANUAL1(0x1A),CK1LOW(0x1D),CK1NEG(0x7D))
CCD_CK3X (MANUAL3(0x1A),CK3INV(0x1A),CK3MTGL(0x1C),CK3LOW(0x1D),CK3MAP(0x77,0x78,0x79),CK3NEG(0x7D))
CCD_CK4X (MANUAL3(0x1A),CK4INV(0x1A),CK4MTGL(0x1C),CK4LOW(0x1D),CK4MAP(0x7A,0x7B,0x7C),CK4NEG(0x7D))
CCD_CPX (CTRLHI(0x16),CTRLINV(0x16),CTRLDIS(0x16),CPH(0x72),CPL(0x73),CPNEG(0x7D))
CCD_RSX (CTRLHI(0x16),CTRLINV(0x16),CTRLDIS(0x16),RSH(0x70),RSL(0x71),RSNEG(0x7D))
CCD_TGX (TGINV(0x16),TGMODE(0x17),TGW(0x17),EXPR(0x10,0x11),TGSHLD(0x1D))
CCD_TGG (TGINV(0x16),TGMODE(0x17),TGW(0x17),EXPG(0x12,0x13),TGSHLD(0x1D))
CCD_TGB (TGINV(0x16),TGMODE(0x17),TGW(0x17),EXPB(0x14,0x15),TGSHLD(0x1D))
LAMP_SW (EXPR(0x10,0x11),XPA_SEL(0x03),LAMP_PWR(0x03),LAMPTIM(0x03),MTLLAMP(0x04),LAMPPWM(0x29))
XPA_SW (EXPG(0x12,0x13),XPA_SEL(0x03),LAMP_PWR(0x03),LAMPTIM(0x03),MTLLAMP(0x04),LAMPPWM(0x29))
LAMP_B (EXPB(0x14,0x15),LAMP_PWR(0x03))
other registers:
CISSET(0x01),CNSET(0x18),DCKSEL(0x18),SCANMOD(0x18),EXPDMY(0x19),LINECLP(0x1A),CKAREA(0x1C),TGTIME(0x1C),LINESEL(0x1E),DUMMY(0x34)
Responsible for signals to AFE:
VSMP (VSMP(0x58),VSMPW(0x58))
BSMP (BSMP(0x59),BSMPW(0x59))
other register settings depending on this:
RHI(0x52),RLOW(0x53),GHI(0x54),GLOW(0x55),BHI(0x56),BLOW(0x57),
*/
static void sanei_gl841_setup_sensor(Genesys_Device * dev, const Genesys_Sensor& sensor,
Genesys_Register_Set * regs,
SANE_Bool extended, unsigned ccd_size_divisor)
{
DBG(DBG_proc, "%s\n", __func__);
// that one is tricky at least
for (uint16_t addr = 0x08; addr <= 0x0b; ++addr) {
regs->set8(0x70 + addr - 0x08, sensor.custom_regs.get_value(addr));
}
// ignore registers in range [0x10..0x16)
for (uint16_t addr = 0x16; addr < 0x1e; ++addr) {
regs->set8(addr, sensor.custom_regs.get_value(addr));
}
// ignore registers in range [0x5b..0x5e]
for (uint16_t addr = 0x52; addr < 0x52 + 9; ++addr) {
regs->set8(addr, sensor.custom_regs.get_value(addr));
}
/* don't go any further if no extended setup */
if (!extended)
return;
/* todo : add more CCD types if needed */
/* we might want to expand the Sensor struct to have these
2 kind of settings */
if (dev->model->ccd_type == CCD_5345)
{
if (ccd_size_divisor > 1) {
GenesysRegister* r;
/* settings for CCD used at half is max resolution */
r = sanei_genesys_get_address (regs, 0x70);
r->value = 0x00;
r = sanei_genesys_get_address (regs, 0x71);
r->value = 0x05;
r = sanei_genesys_get_address (regs, 0x72);
r->value = 0x06;
r = sanei_genesys_get_address (regs, 0x73);
r->value = 0x08;
r = sanei_genesys_get_address (regs, 0x18);
r->value = 0x28;
r = sanei_genesys_get_address (regs, 0x58);
r->value = 0x80 | (r->value & 0x03); /* VSMP=16 */
}
else
{
GenesysRegister* r;
/* swap latch times */
r = sanei_genesys_get_address (regs, 0x18);
r->value = 0x30;
regs->set8(0x52, sensor.custom_regs.get_value(0x55));
regs->set8(0x53, sensor.custom_regs.get_value(0x56));
regs->set8(0x54, sensor.custom_regs.get_value(0x57));
regs->set8(0x55, sensor.custom_regs.get_value(0x52));
regs->set8(0x56, sensor.custom_regs.get_value(0x53));
regs->set8(0x57, sensor.custom_regs.get_value(0x54));
r = sanei_genesys_get_address (regs, 0x58);
r->value = 0x20 | (r->value & 0x03); /* VSMP=4 */
}
return;
}
if (dev->model->ccd_type == CCD_HP2300)
{
/* settings for CCD used at half is max resolution */
GenesysRegister* r;
if (ccd_size_divisor > 1) {
r = sanei_genesys_get_address (regs, 0x70);
r->value = 0x16;
r = sanei_genesys_get_address (regs, 0x71);
r->value = 0x00;
r = sanei_genesys_get_address (regs, 0x72);
r->value = 0x01;
r = sanei_genesys_get_address (regs, 0x73);
r->value = 0x03;
/* manual clock programming */
r = sanei_genesys_get_address (regs, 0x1d);
r->value |= 0x80;
}
else
{
r = sanei_genesys_get_address (regs, 0x70);
r->value = 1;
r = sanei_genesys_get_address (regs, 0x71);
r->value = 3;
r = sanei_genesys_get_address (regs, 0x72);
r->value = 4;
r = sanei_genesys_get_address (regs, 0x73);
r->value = 6;
}
r = sanei_genesys_get_address (regs, 0x58);
r->value = 0x80 | (r->value & 0x03); /* VSMP=16 */
return;
}
}
/** Test if the ASIC works
*/
// TODO: make this functional
static void sanei_gl841_asic_test(Genesys_Device* dev)
{
DBG_HELPER(dbg);
size_t size, verify_size;
unsigned int i;
throw SaneException("not implemented");
// set and read exposure time, compare if it's the same
dev->write_register(0x38, 0xde);
dev->write_register(0x39, 0xad);
uint8_t val = dev->read_register(0x38);
if (val != 0xde) /* value of register 0x38 */
{
throw SaneException("register contains invalid value");
}
val = dev->read_register(0x39);
if (val != 0xad) /* value of register 0x39 */
{
throw SaneException("register contains invalid value");
}
/* ram test: */
size = 0x40000;
verify_size = size + 0x80;
/* todo: looks like the read size must be a multiple of 128?
otherwise the read doesn't succeed the second time after the scanner has
been plugged in. Very strange. */
std::vector<uint8_t> data(size);
std::vector<uint8_t> verify_data(verify_size);
for (i = 0; i < (size - 1); i += 2)
{
data[i] = i / 512;
data[i + 1] = (i / 2) % 256;
}
sanei_genesys_set_buffer_address(dev, 0x0000);
// sanei_genesys_bulk_write_data(dev, 0x3c, data, size);
sanei_genesys_set_buffer_address(dev, 0x0000);
sanei_genesys_bulk_read_data(dev, 0x45, verify_data.data(), verify_size);
/* todo: why i + 2 ? */
for (i = 0; i < size; i++)
{
if (verify_data[i] != data[i])
{
DBG(DBG_info, "0x%.8x: got %.2x %.2x %.2x %.2x, expected %.2x %.2x %.2x %.2x\n",
i,
verify_data[i],
verify_data[i+1],
verify_data[i+2],
verify_data[i+3],
data[i],
data[i+1],
data[i+2],
data[i+3]);
throw SaneException("data verification error");
}
}
}
/*
* Set all registers LiDE 80 to default values
* (function called only once at the beginning)
* we are doing a special case to ease development
*/
static void
gl841_init_lide80 (Genesys_Device * dev)
{
uint8_t val;
INITREG (0x01, 0x82); /* 0x02 = SHDAREA and no CISSET ! */
INITREG (0x02, 0x10);
INITREG (0x03, 0x50);
INITREG (0x04, 0x02);
INITREG (0x05, 0x4c); /* 1200 DPI */
INITREG (0x06, 0x38); /* 0x38 scanmod=1, pwrbit, GAIN4 */
INITREG (0x07, 0x00);
INITREG (0x08, 0x00);
INITREG (0x09, 0x11);
INITREG (0x0a, 0x00);
INITREG (0x10, 0x40);
INITREG (0x11, 0x00);
INITREG (0x12, 0x40);
INITREG (0x13, 0x00);
INITREG (0x14, 0x40);
INITREG (0x15, 0x00);
INITREG (0x16, 0x00);
INITREG (0x17, 0x01);
INITREG (0x18, 0x00);
INITREG (0x19, 0x06);
INITREG (0x1a, 0x00);
INITREG (0x1b, 0x00);
INITREG (0x1c, 0x00);
INITREG (0x1d, 0x04);
INITREG (0x1e, 0x10);
INITREG (0x1f, 0x04);
INITREG (0x20, 0x02);
INITREG (0x21, 0x10);
INITREG (0x22, 0x20);
INITREG (0x23, 0x20);
INITREG (0x24, 0x10);
INITREG (0x25, 0x00);
INITREG (0x26, 0x00);
INITREG (0x27, 0x00);
INITREG (0x29, 0xff);
const auto& sensor = sanei_genesys_find_sensor_any(dev);
INITREG (0x2c, sensor.optical_res>>8);
INITREG (0x2d, sensor.optical_res & 0xff);
INITREG (0x2e, 0x80);
INITREG (0x2f, 0x80);
INITREG (0x30, 0x00);
INITREG (0x31, 0x10);
INITREG (0x32, 0x15);
INITREG (0x33, 0x0e);
INITREG (0x34, 0x40);
INITREG (0x35, 0x00);
INITREG (0x36, 0x2a);
INITREG (0x37, 0x30);
INITREG (0x38, 0x2a);
INITREG (0x39, 0xf8);
INITREG (0x3d, 0x00);
INITREG (0x3e, 0x00);
INITREG (0x3f, 0x00);
INITREG (0x52, 0x03);
INITREG (0x53, 0x07);
INITREG (0x54, 0x00);
INITREG (0x55, 0x00);
INITREG (0x56, 0x00);
INITREG (0x57, 0x00);
INITREG (0x58, 0x29);
INITREG (0x59, 0x69);
INITREG (0x5a, 0x55);
INITREG (0x5d, 0x20);
INITREG (0x5e, 0x41);
INITREG (0x5f, 0x40);
INITREG (0x60, 0x00);
INITREG (0x61, 0x00);
INITREG (0x62, 0x00);
INITREG (0x63, 0x00);
INITREG (0x64, 0x00);
INITREG (0x65, 0x00);
INITREG (0x66, 0x00);
INITREG (0x67, 0x40);
INITREG (0x68, 0x40);
INITREG (0x69, 0x20);
INITREG (0x6a, 0x20);
INITREG(0x6c, 0x00);
INITREG(0x6d, 0x00);
INITREG(0x6e, 0x00);
INITREG(0x6f, 0x00);
INITREG (0x70, 0x00);
INITREG (0x71, 0x05);
INITREG (0x72, 0x07);
INITREG (0x73, 0x09);
INITREG (0x74, 0x00);
INITREG (0x75, 0x01);
INITREG (0x76, 0xff);
INITREG (0x77, 0x00);
INITREG (0x78, 0x0f);
INITREG (0x79, 0xf0);
INITREG (0x7a, 0xf0);
INITREG (0x7b, 0x00);
INITREG (0x7c, 0x1e);
INITREG (0x7d, 0x11);
INITREG (0x7e, 0x00);
INITREG (0x7f, 0x50);
INITREG (0x80, 0x00);
INITREG (0x81, 0x00);
INITREG (0x82, 0x0f);
INITREG (0x83, 0x00);
INITREG (0x84, 0x0e);
INITREG (0x85, 0x00);
INITREG (0x86, 0x0d);
INITREG (0x87, 0x02);
INITREG (0x88, 0x00);
INITREG (0x89, 0x00);
for (const auto& reg : dev->gpo.regs) {
dev->reg.set8(reg.address, reg.value);
}
// specific scanner settings, clock and gpio first
val = dev->read_register(REG6B);
dev->write_register(REG6B, 0x0c);
dev->write_register(0x06, 0x10);
dev->write_register(REG6E, 0x6d);
dev->write_register(REG6F, 0x80);
dev->write_register(REG6B, 0x0e);
val = dev->read_register(REG6C);
dev->write_register(REG6C, 0x00);
val = dev->read_register(REG6D);
dev->write_register(REG6D, 0x8f);
val = dev->read_register(REG6B);
dev->write_register(REG6B, 0x0e);
val = dev->read_register(REG6B);
dev->write_register(REG6B, 0x0e);
val = dev->read_register(REG6B);
dev->write_register(REG6B, 0x0a);
val = dev->read_register(REG6B);
dev->write_register(REG6B, 0x02);
val = dev->read_register(REG6B);
dev->write_register(REG6B, 0x06);
(void) val; // FIXME: we don't use the information read from registers
sanei_genesys_write_0x8c(dev, 0x10, 0x94);
dev->write_register(0x09, 0x10);
// FIXME: the following code originally changed 0x6b, but due to bug the 0x6c register was
// effectively changed. The current behavior matches the old code, but should probably be fixed.
dev->reg.find_reg(0x6c).value |= REG6B_GPO18;
dev->reg.find_reg(0x6c).value &= ~REG6B_GPO17;
sanei_gl841_setup_sensor(dev, sensor, &dev->reg, 0, 1);
}
/*
* Set all registers to default values
* (function called only once at the beginning)
*/
static void
gl841_init_registers (Genesys_Device * dev)
{
int addr;
DBG(DBG_proc, "%s\n", __func__);
dev->reg.clear();
if (dev->model->model_id == MODEL_CANON_LIDE_80)
{
gl841_init_lide80(dev);
return ;
}
for (addr = 1; addr <= 0x0a; addr++) {
dev->reg.init_reg(addr, 0);
}
for (addr = 0x10; addr <= 0x27; addr++) {
dev->reg.init_reg(addr, 0);
}
dev->reg.init_reg(0x29, 0);
for (addr = 0x2c; addr <= 0x39; addr++)
dev->reg.init_reg(addr, 0);
for (addr = 0x3d; addr <= 0x3f; addr++)
dev->reg.init_reg(addr, 0);
for (addr = 0x52; addr <= 0x5a; addr++)
dev->reg.init_reg(addr, 0);
for (addr = 0x5d; addr <= 0x87; addr++)
dev->reg.init_reg(addr, 0);
dev->reg.find_reg(0x01).value = 0x20; /* (enable shading), CCD, color, 1M */
if (dev->model->is_cis == SANE_TRUE) {
dev->reg.find_reg(0x01).value |= REG01_CISSET;
} else {
dev->reg.find_reg(0x01).value &= ~REG01_CISSET;
}
dev->reg.find_reg(0x02).value = 0x30 /*0x38 */ ; /* auto home, one-table-move, full step */
dev->reg.find_reg(0x02).value |= REG02_AGOHOME;
sanei_genesys_set_motor_power(dev->reg, true);
dev->reg.find_reg(0x02).value |= REG02_FASTFED;
dev->reg.find_reg(0x03).value = 0x1f /*0x17 */ ; /* lamp on */
dev->reg.find_reg(0x03).value |= REG03_AVEENB;
if (dev->model->ccd_type == CCD_PLUSTEK_3600) /* AD front end */
{
dev->reg.find_reg(0x04).value = (2 << REG04S_AFEMOD) | 0x02;
}
else /* Wolfson front end */
{
dev->reg.find_reg(0x04).value |= 1 << REG04S_AFEMOD;
}
const auto& sensor = sanei_genesys_find_sensor_any(dev);
dev->reg.find_reg(0x05).value = 0x00; /* disable gamma, 24 clocks/pixel */
unsigned dpihw = 0;
if (sensor.sensor_pixels < 0x1500) {
dpihw = 600;
} else if (sensor.sensor_pixels < 0x2a80) {
dpihw = 1200;
} else if (sensor.sensor_pixels < 0x5400) {
dpihw = 2400;
} else {
throw SaneException("Cannot handle sensor pixel count %d", sensor.sensor_pixels);
}
sanei_genesys_set_dpihw(dev->reg, sensor, dpihw);
dev->reg.find_reg(0x06).value |= REG06_PWRBIT;
dev->reg.find_reg(0x06).value |= REG06_GAIN4;
/* XP300 CCD needs different clock and clock/pixels values */
if (dev->model->ccd_type != CCD_XP300 && dev->model->ccd_type != CCD_DP685
&& dev->model->ccd_type != CCD_PLUSTEK_3600)
{
dev->reg.find_reg(0x06).value |= 0 << REG06S_SCANMOD;
dev->reg.find_reg(0x09).value |= 1 << REG09S_CLKSET;
}
else
{
dev->reg.find_reg(0x06).value |= 0x05 << REG06S_SCANMOD; /* 15 clocks/pixel */
dev->reg.find_reg(0x09).value = 0; /* 24 MHz CLKSET */
}
dev->reg.find_reg(0x1e).value = 0xf0; /* watch-dog time */
dev->reg.find_reg(0x17).value |= 1 << REG17S_TGW;
dev->reg.find_reg(0x19).value = 0x50;
dev->reg.find_reg(0x1d).value |= 1 << REG1DS_TGSHLD;
dev->reg.find_reg(0x1e).value |= 1 << REG1ES_WDTIME;
/*SCANFED*/
dev->reg.find_reg(0x1f).value = 0x01;
/*BUFSEL*/
dev->reg.find_reg(0x20).value = 0x20;
/*LAMPPWM*/
dev->reg.find_reg(0x29).value = 0xff;
/*BWHI*/
dev->reg.find_reg(0x2e).value = 0x80;
/*BWLOW*/
dev->reg.find_reg(0x2f).value = 0x80;
/*LPERIOD*/
dev->reg.find_reg(0x38).value = 0x4f;
dev->reg.find_reg(0x39).value = 0xc1;
/*VSMPW*/
dev->reg.find_reg(0x58).value |= 3 << REG58S_VSMPW;
/*BSMPW*/
dev->reg.find_reg(0x59).value |= 3 << REG59S_BSMPW;
/*RLCSEL*/
dev->reg.find_reg(0x5a).value |= REG5A_RLCSEL;
/*STOPTIM*/
dev->reg.find_reg(0x5e).value |= 0x2 << REG5ES_STOPTIM;
sanei_gl841_setup_sensor(dev, sensor, &dev->reg, 0, 1);
// set up GPIO
for (const auto& reg : dev->gpo.regs) {
dev->reg.set8(reg.address, reg.value);
}
/* TODO there is a switch calling to be written here */
if (dev->model->gpo_type == GPO_CANONLIDE35)
{
dev->reg.find_reg(0x6b).value |= REG6B_GPO18;
dev->reg.find_reg(0x6b).value &= ~REG6B_GPO17;
}
if (dev->model->gpo_type == GPO_XP300)
{
dev->reg.find_reg(0x6b).value |= REG6B_GPO17;
}
if (dev->model->gpo_type == GPO_DP685)
{
/* REG6B_GPO18 lights on green led */
dev->reg.find_reg(0x6b).value |= REG6B_GPO17|REG6B_GPO18;
}
DBG(DBG_proc, "%s complete\n", __func__);
}
// Send slope table for motor movement slope_table in machine byte order
static void gl841_send_slope_table(Genesys_Device* dev, int table_nr,
const std::vector<uint16_t>& slope_table,
int steps)
{
DBG_HELPER_ARGS(dbg, "table_nr = %d, steps = %d", table_nr, steps);
int dpihw;
int start_address;
char msg[4000];
/*#ifdef WORDS_BIGENDIAN*/
int i;
/*#endif*/
dpihw = dev->reg.find_reg(0x05).value >> 6;
if (dpihw == 0) /* 600 dpi */
start_address = 0x08000;
else if (dpihw == 1) /* 1200 dpi */
start_address = 0x10000;
else if (dpihw == 2) /* 2400 dpi */
start_address = 0x20000;
else {
throw SaneException("Unexpected dpihw");
}
std::vector<uint8_t> table(steps * 2);
for(i = 0; i < steps; i++) {
table[i * 2] = slope_table[i] & 0xff;
table[i * 2 + 1] = slope_table[i] >> 8;
}
if (DBG_LEVEL >= DBG_io)
{
sprintf (msg, "write slope %d (%d)=", table_nr, steps);
for (i = 0; i < steps; i++)
{
sprintf (msg+strlen(msg), ",%d", slope_table[i]);
}
DBG(DBG_io, "%s: %s\n", __func__, msg);
}
sanei_genesys_set_buffer_address(dev, start_address + table_nr * 0x200);
sanei_genesys_bulk_write_data(dev, 0x3c, table.data(), steps * 2);
}
static void gl841_set_lide80_fe(Genesys_Device* dev, uint8_t set)
{
DBG_HELPER(dbg);
if (set == AFE_INIT)
{
DBG(DBG_proc, "%s(): setting DAC %u\n", __func__, dev->model->dac_type);
dev->frontend = dev->frontend_initial;
// write them to analog frontend
sanei_genesys_fe_write_data(dev, 0x00, dev->frontend.regs.get_value(0x00));
sanei_genesys_fe_write_data(dev, 0x03, dev->frontend.regs.get_value(0x01));
sanei_genesys_fe_write_data(dev, 0x06, dev->frontend.regs.get_value(0x02));
}
if (set == AFE_SET)
{
sanei_genesys_fe_write_data(dev, 0x00, dev->frontend.regs.get_value(0x00));
sanei_genesys_fe_write_data(dev, 0x06, dev->frontend.regs.get_value(0x20));
sanei_genesys_fe_write_data(dev, 0x03, dev->frontend.regs.get_value(0x28));
}
}
// Set values of Analog Device type frontend
static void gl841_set_ad_fe(Genesys_Device* dev, uint8_t set)
{
DBG_HELPER(dbg);
int i;
/* special case for LiDE 80 analog frontend */
if(dev->model->dac_type==DAC_CANONLIDE80)
{
gl841_set_lide80_fe(dev, set);
return;
}
if (set == AFE_INIT)
{
DBG(DBG_proc, "%s(): setting DAC %u\n", __func__, dev->model->dac_type);
dev->frontend = dev->frontend_initial;
// write them to analog frontend
sanei_genesys_fe_write_data(dev, 0x00, dev->frontend.regs.get_value(0x00));
sanei_genesys_fe_write_data(dev, 0x01, dev->frontend.regs.get_value(0x01));
for (i = 0; i < 6; i++) {
sanei_genesys_fe_write_data(dev, 0x02 + i, 0x00);
}
}
if (set == AFE_SET)
{
// write them to analog frontend
sanei_genesys_fe_write_data(dev, 0x00, dev->frontend.regs.get_value(0x00));
sanei_genesys_fe_write_data(dev, 0x01, dev->frontend.regs.get_value(0x01));
// Write fe 0x02 (red gain)
sanei_genesys_fe_write_data(dev, 0x02, dev->frontend.get_gain(0));
// Write fe 0x03 (green gain)
sanei_genesys_fe_write_data(dev, 0x03, dev->frontend.get_gain(1));
// Write fe 0x04 (blue gain)
sanei_genesys_fe_write_data(dev, 0x04, dev->frontend.get_gain(2));
// Write fe 0x05 (red offset)
sanei_genesys_fe_write_data(dev, 0x05, dev->frontend.get_offset(0));
// Write fe 0x06 (green offset)
sanei_genesys_fe_write_data(dev, 0x06, dev->frontend.get_offset(1));
// Write fe 0x07 (blue offset)
sanei_genesys_fe_write_data(dev, 0x07, dev->frontend.get_offset(2));
}
}
// Set values of analog frontend
static void gl841_set_fe(Genesys_Device* dev, const Genesys_Sensor& sensor, uint8_t set)
{
DBG_HELPER_ARGS(dbg, "%s", set == AFE_INIT ? "init" :
set == AFE_SET ? "set" :
set == AFE_POWER_SAVE ? "powersave" : "huh?");
(void) sensor;
int i;
/* Analog Device type frontend */
uint8_t frontend_type = dev->reg.find_reg(0x04).value & REG04_FESET;
if (frontend_type == 0x02) {
gl841_set_ad_fe(dev, set);
return;
}
if (frontend_type != 0x00) {
throw SaneException("unsupported frontend type %d", frontend_type);
}
if (set == AFE_INIT)
{
DBG(DBG_proc, "%s(): setting DAC %u\n", __func__, dev->model->dac_type);
dev->frontend = dev->frontend_initial;
// reset only done on init
sanei_genesys_fe_write_data (dev, 0x04, 0x80);
DBG(DBG_proc, "%s(): frontend reset complete\n", __func__);
}
if (set == AFE_POWER_SAVE)
{
sanei_genesys_fe_write_data (dev, 0x01, 0x02);
return;
}
/* todo : base this test on cfg reg3 or a CCD family flag to be created */
/*if (dev->model->ccd_type!=CCD_HP2300 && dev->model->ccd_type!=CCD_HP2400) */
{
sanei_genesys_fe_write_data(dev, 0x00, dev->frontend.regs.get_value(0x00));
sanei_genesys_fe_write_data(dev, 0x02, dev->frontend.regs.get_value(0x02));
}
sanei_genesys_fe_write_data(dev, 0x01, dev->frontend.regs.get_value(0x01));
sanei_genesys_fe_write_data(dev, 0x03, dev->frontend.regs.get_value(0x03));
sanei_genesys_fe_write_data(dev, 0x06, dev->frontend.reg2[0]);
sanei_genesys_fe_write_data(dev, 0x08, dev->frontend.reg2[1]);
sanei_genesys_fe_write_data(dev, 0x09, dev->frontend.reg2[2]);
for (i = 0; i < 3; i++)
{
sanei_genesys_fe_write_data(dev, 0x24 + i, dev->frontend.regs.get_value(0x24 + i));
sanei_genesys_fe_write_data(dev, 0x28 + i, dev->frontend.get_gain(i));
sanei_genesys_fe_write_data(dev, 0x20 + i, dev->frontend.get_offset(i));
}
}
#define MOTOR_ACTION_FEED 1
#define MOTOR_ACTION_GO_HOME 2
#define MOTOR_ACTION_HOME_FREE 3
// @brief turn off motor
static void gl841_init_motor_regs_off(Genesys_Register_Set* reg, unsigned int scan_lines)
{
DBG_HELPER_ARGS(dbg, "scan_lines=%d", scan_lines);
unsigned int feedl;
GenesysRegister* r;
feedl = 2;
r = sanei_genesys_get_address (reg, 0x3d);
r->value = (feedl >> 16) & 0xf;
r = sanei_genesys_get_address (reg, 0x3e);
r->value = (feedl >> 8) & 0xff;
r = sanei_genesys_get_address (reg, 0x3f);
r->value = feedl & 0xff;
r = sanei_genesys_get_address (reg, 0x5e);
r->value &= ~0xe0;
r = sanei_genesys_get_address (reg, 0x25);
r->value = (scan_lines >> 16) & 0xf;
r = sanei_genesys_get_address (reg, 0x26);
r->value = (scan_lines >> 8) & 0xff;
r = sanei_genesys_get_address (reg, 0x27);
r->value = scan_lines & 0xff;
r = sanei_genesys_get_address (reg, 0x02);
r->value &= ~0x01; /*LONGCURV OFF*/
r->value &= ~0x80; /*NOT_HOME OFF*/
r->value &= ~0x10;
r->value &= ~0x06;
r->value &= ~0x08;
r->value &= ~0x20;
r->value &= ~0x40;
r = sanei_genesys_get_address (reg, 0x67);
r->value = 0x3f;
r = sanei_genesys_get_address (reg, 0x68);
r->value = 0x3f;
r = sanei_genesys_get_address (reg, REG_STEPNO);
r->value = 0;
r = sanei_genesys_get_address (reg, REG_FASTNO);
r->value = 0;
r = sanei_genesys_get_address (reg, 0x69);
r->value = 0;
r = sanei_genesys_get_address (reg, 0x6a);
r->value = 0;
r = sanei_genesys_get_address (reg, 0x5f);
r->value = 0;
}
/** @brief write motor table frequency
* Write motor frequency data table.
* @param dev device to set up motor
* @param ydpi motor target resolution
*/
static void gl841_write_freq(Genesys_Device* dev, unsigned int ydpi)
{
DBG_HELPER(dbg);
/**< fast table */
uint8_t tdefault[] = {0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0x36,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xb6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0xf6,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76,0x18,0x76};
uint8_t t1200[] = {0xc7,0x31,0xc7,0x31,0xc7,0x31,0xc7,0x31,0xc7,0x31,0xc7,0x31,0xc7,0x31,0xc7,0x31,0xc0,0x11,0xc0,0x11,0xc0,0x11,0xc0,0x11,0xc0,0x11,0xc0,0x11,0xc0,0x11,0xc0,0x11,0xc7,0xb1,0xc7,0xb1,0xc7,0xb1,0xc7,0xb1,0xc7,0xb1,0xc7,0xb1,0xc7,0xb1,0xc7,0xb1,0x07,0xe0,0x07,0xe0,0x07,0xe0,0x07,0xe0,0x07,0xe0,0x07,0xe0,0x07,0xe0,0x07,0xe0,0xc7,0xf1,0xc7,0xf1,0xc7,0xf1,0xc7,0xf1,0xc7,0xf1,0xc7,0xf1,0xc7,0xf1,0xc7,0xf1,0xc0,0x51,0xc0,0x51,0xc0,0x51,0xc0,0x51,0xc0,0x51,0xc0,0x51,0xc0,0x51,0xc0,0x51,0xc7,0x71,0xc7,0x71,0xc7,0x71,0xc7,0x71,0xc7,0x71,0xc7,0x71,0xc7,0x71,0xc7,0x71,0x07,0x20,0x07,0x20,0x07,0x20,0x07,0x20,0x07,0x20,0x07,0x20,0x07,0x20,0x07,0x20};
uint8_t t300[] = {0x08,0x32,0x08,0x32,0x08,0x32,0x08,0x32,0x08,0x32,0x08,0x32,0x08,0x32,0x08,0x32,0x00,0x13,0x00,0x13,0x00,0x13,0x00,0x13,0x00,0x13,0x00,0x13,0x00,0x13,0x00,0x13,0x08,0xb2,0x08,0xb2,0x08,0xb2,0x08,0xb2,0x08,0xb2,0x08,0xb2,0x08,0xb2,0x08,0xb2,0x0c,0xa0,0x0c,0xa0,0x0c,0xa0,0x0c,0xa0,0x0c,0xa0,0x0c,0xa0,0x0c,0xa0,0x0c,0xa0,0x08,0xf2,0x08,0xf2,0x08,0xf2,0x08,0xf2,0x08,0xf2,0x08,0xf2,0x08,0xf2,0x08,0xf2,0x00,0xd3,0x00,0xd3,0x00,0xd3,0x00,0xd3,0x00,0xd3,0x00,0xd3,0x00,0xd3,0x00,0xd3,0x08,0x72,0x08,0x72,0x08,0x72,0x08,0x72,0x08,0x72,0x08,0x72,0x08,0x72,0x08,0x72,0x0c,0x60,0x0c,0x60,0x0c,0x60,0x0c,0x60,0x0c,0x60,0x0c,0x60,0x0c,0x60,0x0c,0x60};
uint8_t t150[] = {0x0c,0x33,0xcf,0x33,0xcf,0x33,0xcf,0x33,0xcf,0x33,0xcf,0x33,0xcf,0x33,0xcf,0x33,0x40,0x14,0x80,0x15,0x80,0x15,0x80,0x15,0x80,0x15,0x80,0x15,0x80,0x15,0x80,0x15,0x0c,0xb3,0xcf,0xb3,0xcf,0xb3,0xcf,0xb3,0xcf,0xb3,0xcf,0xb3,0xcf,0xb3,0xcf,0xb3,0x11,0xa0,0x16,0xa0,0x16,0xa0,0x16,0xa0,0x16,0xa0,0x16,0xa0,0x16,0xa0,0x16,0xa0,0x0c,0xf3,0xcf,0xf3,0xcf,0xf3,0xcf,0xf3,0xcf,0xf3,0xcf,0xf3,0xcf,0xf3,0xcf,0xf3,0x40,0xd4,0x80,0xd5,0x80,0xd5,0x80,0xd5,0x80,0xd5,0x80,0xd5,0x80,0xd5,0x80,0xd5,0x0c,0x73,0xcf,0x73,0xcf,0x73,0xcf,0x73,0xcf,0x73,0xcf,0x73,0xcf,0x73,0xcf,0x73,0x11,0x60,0x16,0x60,0x16,0x60,0x16,0x60,0x16,0x60,0x16,0x60,0x16,0x60,0x16,0x60};
uint8_t *table;
if(dev->model->motor_type == MOTOR_CANONLIDE80)
{
switch(ydpi)
{
case 3600:
case 1200:
table=t1200;
break;
case 900:
case 300:
table=t300;
break;
case 450:
case 150:
table=t150;
break;
default:
table=tdefault;
}
dev->write_register(0x66, 0x00);
dev->write_register(0x5b, 0x0c);
dev->write_register(0x5c, 0x00);
sanei_genesys_bulk_write_data(dev, 0x28, table, 128);
dev->write_register(0x5b, 0x00);
dev->write_register(0x5c, 0x00);
}
}
static void gl841_init_motor_regs(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set* reg, unsigned int feed_steps,/*1/base_ydpi*/
/*maybe float for half/quarter step resolution?*/
unsigned int action, unsigned int flags)
{
DBG_HELPER_ARGS(dbg, "feed_steps=%d, action=%d, flags=%x", feed_steps, action, flags);
unsigned int fast_exposure;
int use_fast_fed = 0;
std::vector<uint16_t> fast_slope_table;
unsigned int fast_slope_steps = 0;
unsigned int feedl;
GenesysRegister* r;
/*number of scan lines to add in a scan_lines line*/
fast_slope_table.resize(256, 0xffff);
gl841_send_slope_table(dev, 0, fast_slope_table, 256);
gl841_send_slope_table(dev, 1, fast_slope_table, 256);
gl841_send_slope_table(dev, 2, fast_slope_table, 256);
gl841_send_slope_table(dev, 3, fast_slope_table, 256);
gl841_send_slope_table(dev, 4, fast_slope_table, 256);
gl841_write_freq(dev, dev->motor.base_ydpi / 4);
fast_slope_steps = 256;
if (action == MOTOR_ACTION_FEED || action == MOTOR_ACTION_GO_HOME)
{
/* FEED and GO_HOME can use fastest slopes available */
fast_exposure = gl841_exposure_time(dev, sensor,
dev->motor.base_ydpi / 4,
0,
0,
0);
DBG(DBG_info, "%s : fast_exposure=%d pixels\n", __func__, fast_exposure);
}
if (action == MOTOR_ACTION_HOME_FREE) {
/* HOME_FREE must be able to stop in one step, so do not try to get faster */
fast_exposure = dev->motor.slopes[0].maximum_start_speed;
}
sanei_genesys_create_slope_table3(
dev,
fast_slope_table,
256,
fast_slope_steps,
0,
fast_exposure,
dev->motor.base_ydpi / 4,
&fast_slope_steps,
&fast_exposure);
feedl = feed_steps - fast_slope_steps*2;
use_fast_fed = 1;
/* all needed slopes available. we did even decide which mode to use.
what next?
- transfer slopes
SCAN:
flags \ use_fast_fed ! 0 1
------------------------\--------------------
0 ! 0,1,2 0,1,2,3
MOTOR_FLAG_AUTO_GO_HOME ! 0,1,2,4 0,1,2,3,4
OFF: none
FEED: 3
GO_HOME: 3
HOME_FREE: 3
- setup registers
* slope specific registers (already done)
* DECSEL for HOME_FREE/GO_HOME/SCAN
* FEEDL
* MTRREV
* MTRPWR
* FASTFED
* STEPSEL
* MTRPWM
* FSTPSEL
* FASTPWM
* HOMENEG
* BWDSTEP
* FWDSTEP
* Z1
* Z2
*/
r = sanei_genesys_get_address(reg, 0x3d);
r->value = (feedl >> 16) & 0xf;
r = sanei_genesys_get_address(reg, 0x3e);
r->value = (feedl >> 8) & 0xff;
r = sanei_genesys_get_address(reg, 0x3f);
r->value = feedl & 0xff;
r = sanei_genesys_get_address(reg, 0x5e);
r->value &= ~0xe0;
r = sanei_genesys_get_address(reg, 0x25);
r->value = 0;
r = sanei_genesys_get_address(reg, 0x26);
r->value = 0;
r = sanei_genesys_get_address(reg, 0x27);
r->value = 0;
r = sanei_genesys_get_address(reg, 0x02);
r->value &= ~0x01; /*LONGCURV OFF*/
r->value &= ~0x80; /*NOT_HOME OFF*/
r->value |= 0x10;
if (action == MOTOR_ACTION_GO_HOME)
r->value |= 0x06;
else
r->value &= ~0x06;
if (use_fast_fed)
r->value |= 0x08;
else
r->value &= ~0x08;
if (flags & MOTOR_FLAG_AUTO_GO_HOME)
r->value |= 0x20;
else
r->value &= ~0x20;
r->value &= ~0x40;
gl841_send_slope_table(dev, 3, fast_slope_table, 256);
r = sanei_genesys_get_address(reg, 0x67);
r->value = 0x3f;
r = sanei_genesys_get_address(reg, 0x68);
r->value = 0x3f;
r = sanei_genesys_get_address(reg, REG_STEPNO);
r->value = 0;
r = sanei_genesys_get_address(reg, REG_FASTNO);
r->value = 0;
r = sanei_genesys_get_address(reg, 0x69);
r->value = 0;
r = sanei_genesys_get_address(reg, 0x6a);
r->value = (fast_slope_steps >> 1) + (fast_slope_steps & 1);
r = sanei_genesys_get_address(reg, 0x5f);
r->value = (fast_slope_steps >> 1) + (fast_slope_steps & 1);
}
static void gl841_init_motor_regs_scan(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set* reg,
unsigned int scan_exposure_time,/*pixel*/
float scan_yres,/*dpi, motor resolution*/
int scan_step_type,/*0: full, 1: half, 2: quarter*/
unsigned int scan_lines,/*lines, scan resolution*/
unsigned int scan_dummy,
// number of scan lines to add in a scan_lines line
unsigned int feed_steps,/*1/base_ydpi*/
// maybe float for half/quarter step resolution?
unsigned int flags)
{
DBG_HELPER_ARGS(dbg, "scan_exposure_time=%d, scan_yres=%g, scan_step_type=%d, scan_lines=%d,"
" scan_dummy=%d, feed_steps=%d, flags=%x",
scan_exposure_time, scan_yres, scan_step_type, scan_lines, scan_dummy,
feed_steps, flags);
unsigned int fast_exposure;
int use_fast_fed = 0;
unsigned int fast_time;
unsigned int slow_time;
std::vector<uint16_t> slow_slope_table;
std::vector<uint16_t> fast_slope_table;
std::vector<uint16_t> back_slope_table;
unsigned int slow_slope_time;
unsigned int fast_slope_time;
unsigned int slow_slope_steps = 0;
unsigned int fast_slope_steps = 0;
unsigned int back_slope_steps = 0;
unsigned int feedl;
GenesysRegister* r;
unsigned int min_restep = 0x20;
uint32_t z1, z2;
fast_exposure = gl841_exposure_time(dev, sensor,
dev->motor.base_ydpi / 4,
0,
0,
0);
DBG(DBG_info, "%s : fast_exposure=%d pixels\n", __func__, fast_exposure);
slow_slope_table.resize(256, 0xffff);
gl841_send_slope_table(dev, 0, slow_slope_table, 256);
gl841_send_slope_table(dev, 1, slow_slope_table, 256);
gl841_send_slope_table(dev, 2, slow_slope_table, 256);
gl841_send_slope_table(dev, 3, slow_slope_table, 256);
gl841_send_slope_table(dev, 4, slow_slope_table, 256);
/* motor frequency table */
gl841_write_freq(dev, scan_yres);
/*
we calculate both tables for SCAN. the fast slope step count depends on
how many steps we need for slow acceleration and how much steps we are
allowed to use.
*/
slow_slope_time = sanei_genesys_create_slope_table3 (
dev,
slow_slope_table, 256,
256,
scan_step_type,
scan_exposure_time,
scan_yres,
&slow_slope_steps,
NULL);
sanei_genesys_create_slope_table3 (
dev,
back_slope_table, 256,
256,
scan_step_type,
0,
scan_yres,
&back_slope_steps,
NULL);
if (feed_steps < (slow_slope_steps >> scan_step_type)) {
/*TODO: what should we do here?? go back to exposure calculation?*/
feed_steps = slow_slope_steps >> scan_step_type;
}
if (feed_steps > fast_slope_steps*2 -
(slow_slope_steps >> scan_step_type))
fast_slope_steps = 256;
else
/* we need to shorten fast_slope_steps here. */
fast_slope_steps = (feed_steps -
(slow_slope_steps >> scan_step_type))/2;
DBG(DBG_info, "%s: Maximum allowed slope steps for fast slope: %d\n", __func__,
fast_slope_steps);
fast_slope_time = sanei_genesys_create_slope_table3 (
dev,
fast_slope_table, 256,
fast_slope_steps,
0,
fast_exposure,
dev->motor.base_ydpi / 4,
&fast_slope_steps,
&fast_exposure);
/* fast fed special cases handling */
if (dev->model->gpo_type == GPO_XP300
|| dev->model->gpo_type == GPO_DP685)
{
/* quirk: looks like at least this scanner is unable to use
2-feed mode */
use_fast_fed = 0;
}
else if (feed_steps < fast_slope_steps*2 + (slow_slope_steps >> scan_step_type)) {
use_fast_fed = 0;
DBG(DBG_info, "%s: feed too short, slow move forced.\n", __func__);
} else {
/* for deciding whether we should use fast mode we need to check how long we
need for (fast)accelerating, moving, decelerating, (TODO: stopping?)
(slow)accelerating again versus (slow)accelerating and moving. we need
fast and slow tables here.
*/
/*NOTE: scan_exposure_time is per scan_yres*/
/*NOTE: fast_exposure is per base_ydpi/4*/
/*we use full steps as base unit here*/
fast_time =
fast_exposure / 4 *
(feed_steps - fast_slope_steps*2 -
(slow_slope_steps >> scan_step_type))
+ fast_slope_time*2 + slow_slope_time;
slow_time =
(scan_exposure_time * scan_yres) / dev->motor.base_ydpi *
(feed_steps - (slow_slope_steps >> scan_step_type))
+ slow_slope_time;
DBG(DBG_info, "%s: Time for slow move: %d\n", __func__, slow_time);
DBG(DBG_info, "%s: Time for fast move: %d\n", __func__, fast_time);
use_fast_fed = fast_time < slow_time;
}
if (use_fast_fed)
feedl = feed_steps - fast_slope_steps*2 -
(slow_slope_steps >> scan_step_type);
else
if ((feed_steps << scan_step_type) < slow_slope_steps)
feedl = 0;
else
feedl = (feed_steps << scan_step_type) - slow_slope_steps;
DBG(DBG_info, "%s: Decided to use %s mode\n", __func__, use_fast_fed?"fast feed":"slow feed");
/* all needed slopes available. we did even decide which mode to use.
what next?
- transfer slopes
SCAN:
flags \ use_fast_fed ! 0 1
------------------------\--------------------
0 ! 0,1,2 0,1,2,3
MOTOR_FLAG_AUTO_GO_HOME ! 0,1,2,4 0,1,2,3,4
OFF: none
FEED: 3
GO_HOME: 3
HOME_FREE: 3
- setup registers
* slope specific registers (already done)
* DECSEL for HOME_FREE/GO_HOME/SCAN
* FEEDL
* MTRREV
* MTRPWR
* FASTFED
* STEPSEL
* MTRPWM
* FSTPSEL
* FASTPWM
* HOMENEG
* BWDSTEP
* FWDSTEP
* Z1
* Z2
*/
r = sanei_genesys_get_address (reg, 0x3d);
r->value = (feedl >> 16) & 0xf;
r = sanei_genesys_get_address (reg, 0x3e);
r->value = (feedl >> 8) & 0xff;
r = sanei_genesys_get_address (reg, 0x3f);
r->value = feedl & 0xff;
r = sanei_genesys_get_address (reg, 0x5e);
r->value &= ~0xe0;
r = sanei_genesys_get_address (reg, 0x25);
r->value = (scan_lines >> 16) & 0xf;
r = sanei_genesys_get_address (reg, 0x26);
r->value = (scan_lines >> 8) & 0xff;
r = sanei_genesys_get_address (reg, 0x27);
r->value = scan_lines & 0xff;
r = sanei_genesys_get_address (reg, 0x02);
r->value &= ~0x01; /*LONGCURV OFF*/
r->value &= ~0x80; /*NOT_HOME OFF*/
r->value |= 0x10;
r->value &= ~0x06;
if (use_fast_fed)
r->value |= 0x08;
else
r->value &= ~0x08;
if (flags & MOTOR_FLAG_AUTO_GO_HOME)
r->value |= 0x20;
else
r->value &= ~0x20;
if (flags & MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE)
r->value |= 0x40;
else
r->value &= ~0x40;
gl841_send_slope_table(dev, 0, slow_slope_table, 256);
gl841_send_slope_table(dev, 1, back_slope_table, 256);
gl841_send_slope_table(dev, 2, slow_slope_table, 256);
if (use_fast_fed) {
gl841_send_slope_table(dev, 3, fast_slope_table, 256);
}
if (flags & MOTOR_FLAG_AUTO_GO_HOME) {
gl841_send_slope_table(dev, 4, fast_slope_table, 256);
}
/* now reg 0x21 and 0x24 are available, we can calculate reg 0x22 and 0x23,
reg 0x60-0x62 and reg 0x63-0x65
rule:
2*STEPNO+FWDSTEP=2*FASTNO+BWDSTEP
*/
/* steps of table 0*/
if (min_restep < slow_slope_steps*2+2)
min_restep = slow_slope_steps*2+2;
/* steps of table 1*/
if (min_restep < back_slope_steps*2+2)
min_restep = back_slope_steps*2+2;
/* steps of table 0*/
r = sanei_genesys_get_address (reg, REG_FWDSTEP);
r->value = min_restep - slow_slope_steps*2;
/* steps of table 1*/
r = sanei_genesys_get_address (reg, REG_BWDSTEP);
r->value = min_restep - back_slope_steps*2;
/*
for z1/z2:
in dokumentation mentioned variables a-d:
a = time needed for acceleration, table 1
b = time needed for reg 0x1f... wouldn't that be reg0x1f*exposure_time?
c = time needed for acceleration, table 1
d = time needed for reg 0x22... wouldn't that be reg0x22*exposure_time?
z1 = (c+d-1) % exposure_time
z2 = (a+b-1) % exposure_time
*/
/* i don't see any effect of this. i can only guess that this will enhance
sub-pixel accuracy
z1 = (slope_0_time-1) % exposure_time;
z2 = (slope_0_time-1) % exposure_time;
*/
z1 = z2 = 0;
DBG(DBG_info, "%s: z1 = %d\n", __func__, z1);
DBG(DBG_info, "%s: z2 = %d\n", __func__, z2);
r = sanei_genesys_get_address (reg, 0x60);
r->value = ((z1 >> 16) & 0xff);
r = sanei_genesys_get_address (reg, 0x61);
r->value = ((z1 >> 8) & 0xff);
r = sanei_genesys_get_address (reg, 0x62);
r->value = (z1 & 0xff);
r = sanei_genesys_get_address (reg, 0x63);
r->value = ((z2 >> 16) & 0xff);
r = sanei_genesys_get_address (reg, 0x64);
r->value = ((z2 >> 8) & 0xff);
r = sanei_genesys_get_address (reg, 0x65);
r->value = (z2 & 0xff);
r = sanei_genesys_get_address (reg, REG1E);
r->value &= REG1E_WDTIME;
r->value |= scan_dummy;
r = sanei_genesys_get_address (reg, 0x67);
r->value = 0x3f | (scan_step_type << 6);
r = sanei_genesys_get_address (reg, 0x68);
r->value = 0x3f;
r = sanei_genesys_get_address (reg, REG_STEPNO);
r->value = (slow_slope_steps >> 1) + (slow_slope_steps & 1);
r = sanei_genesys_get_address (reg, REG_FASTNO);
r->value = (back_slope_steps >> 1) + (back_slope_steps & 1);
r = sanei_genesys_get_address (reg, 0x69);
r->value = (slow_slope_steps >> 1) + (slow_slope_steps & 1);
r = sanei_genesys_get_address (reg, 0x6a);
r->value = (fast_slope_steps >> 1) + (fast_slope_steps & 1);
r = sanei_genesys_get_address (reg, 0x5f);
r->value = (fast_slope_steps >> 1) + (fast_slope_steps & 1);
}
static int
gl841_get_dpihw(Genesys_Device * dev)
{
GenesysRegister* r;
r = sanei_genesys_get_address(&dev->reg, 0x05);
if ((r->value & REG05_DPIHW) == REG05_DPIHW_600)
return 600;
if ((r->value & REG05_DPIHW) == REG05_DPIHW_1200)
return 1200;
if ((r->value & REG05_DPIHW) == REG05_DPIHW_2400)
return 2400;
return 0;
}
static void gl841_init_optical_regs_off(Genesys_Register_Set* reg)
{
DBG_HELPER(dbg);
GenesysRegister* r;
r = sanei_genesys_get_address(reg, 0x01);
r->value &= ~REG01_SCAN;
}
static void gl841_init_optical_regs_scan(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set* reg, unsigned int exposure_time,
const ScanSession& session, unsigned int used_res,
unsigned int start,
unsigned int pixels, int channels,
int depth, unsigned ccd_size_divisor,
ColorFilter color_filter)
{
DBG_HELPER_ARGS(dbg, "exposure_time=%d, used_res=%d, start=%d, pixels=%d, channels=%d, "
"depth=%d, ccd_size_divisor=%d",
exposure_time, used_res, start, pixels, channels, depth, ccd_size_divisor);
unsigned int words_per_line;
unsigned int end;
unsigned int dpiset;
GenesysRegister* r;
uint16_t expavg, expr, expb, expg;
end = start + pixels;
gl841_set_fe(dev, sensor, AFE_SET);
/* adjust used_res for chosen dpihw */
used_res = used_res * gl841_get_dpihw(dev) / sensor.optical_res;
/*
with ccd_size_divisor==2 the optical resolution of the ccd is halved. We don't apply this
to dpihw, so we need to double dpiset.
For the scanner only the ratio of dpiset and dpihw is of relevance to scale
down properly.
*/
dpiset = used_res * ccd_size_divisor;
/* gpio part.*/
if (dev->model->gpo_type == GPO_CANONLIDE35)
{
r = sanei_genesys_get_address (reg, REG6C);
if (ccd_size_divisor > 1) {
r->value &= ~0x80;
} else {
r->value |= 0x80;
}
}
if (dev->model->gpo_type == GPO_CANONLIDE80)
{
r = sanei_genesys_get_address (reg, REG6C);
if (ccd_size_divisor > 1) {
r->value &= ~0x40;
r->value |= 0x20;
} else {
r->value &= ~0x20;
r->value |= 0x40;
}
}
/* enable shading */
r = sanei_genesys_get_address (reg, 0x01);
r->value |= REG01_SCAN;
if ((session.params.flags & SCAN_FLAG_DISABLE_SHADING) ||
(dev->model->flags & GENESYS_FLAG_NO_CALIBRATION))
{
r->value &= ~REG01_DVDSET;
} else {
r->value |= REG01_DVDSET;
}
/* average looks better than deletion, and we are already set up to
use one of the average enabled resolutions
*/
r = sanei_genesys_get_address (reg, 0x03);
r->value |= REG03_AVEENB;
sanei_genesys_set_lamp_power(dev, sensor, *reg,
!(session.params.flags & SCAN_FLAG_DISABLE_LAMP));
/* BW threshold */
r = sanei_genesys_get_address (reg, 0x2e);
r->value = dev->settings.threshold;
r = sanei_genesys_get_address (reg, 0x2f);
r->value = dev->settings.threshold;
/* monochrome / color scan */
r = sanei_genesys_get_address (reg, 0x04);
switch (depth) {
case 1:
r->value &= ~REG04_BITSET;
r->value |= REG04_LINEART;
break;
case 8:
r->value &= ~(REG04_LINEART | REG04_BITSET);
break;
case 16:
r->value &= ~REG04_LINEART;
r->value |= REG04_BITSET;
break;
}
/* AFEMOD should depend on FESET, and we should set these
* bits separately */
r->value &= ~(REG04_FILTER | REG04_AFEMOD);
if (session.params.flags & SCAN_FLAG_ENABLE_LEDADD) {
r->value |= 0x10; /* no filter */
}
else if (channels == 1)
{
switch (color_filter)
{
case ColorFilter::RED:
r->value |= 0x14;
break;
case ColorFilter::GREEN:
r->value |= 0x18;
break;
case ColorFilter::BLUE:
r->value |= 0x1c;
break;
default:
r->value |= 0x10;
break;
}
}
else
{
if (dev->model->ccd_type == CCD_PLUSTEK_3600)
{
r->value |= 0x22; /* slow color pixel by pixel */
}
else
{
r->value |= 0x10; /* color pixel by pixel */
}
}
/* CIS scanners can do true gray by setting LEDADD */
r = sanei_genesys_get_address (reg, 0x87);
r->value &= ~REG87_LEDADD;
if (session.params.flags & SCAN_FLAG_ENABLE_LEDADD) {
r->value |= REG87_LEDADD;
expr = reg->get16(REG_EXPR);
expg = reg->get16(REG_EXPG);
expb = reg->get16(REG_EXPB);
/* use minimal exposure for best image quality */
expavg = expg;
if (expr < expg)
expavg = expr;
if (expb < expavg)
expavg = expb;
dev->reg.set16(REG_EXPR, expavg);
dev->reg.set16(REG_EXPG, expavg);
dev->reg.set16(REG_EXPB, expavg);
}
// enable gamma tables
r = sanei_genesys_get_address (reg, 0x05);
if (session.params.flags & SCAN_FLAG_DISABLE_GAMMA) {
r->value &= ~REG05_GMMENB;
} else {
r->value |= REG05_GMMENB;
}
/* sensor parameters */
sanei_gl841_setup_sensor(dev, sensor, &dev->reg, 1, ccd_size_divisor);
r = sanei_genesys_get_address (reg, 0x29);
r->value = 255; /*<<<"magic" number, only suitable for cis*/
reg->set16(REG_DPISET, dpiset);
reg->set16(REG_STRPIXEL, start);
reg->set16(REG_ENDPIXEL, end);
DBG(DBG_io2, "%s: STRPIXEL=%d, ENDPIXEL=%d\n", __func__, start, end);
/* words(16bit) before gamma, conversion to 8 bit or lineart*/
words_per_line = (pixels * dpiset) / gl841_get_dpihw(dev);
words_per_line *= channels;
if (depth == 1)
words_per_line = (words_per_line >> 3) + ((words_per_line & 7)?1:0);
else
words_per_line *= depth / 8;
dev->wpl = words_per_line;
dev->bpl = words_per_line;
r = sanei_genesys_get_address (reg, 0x35);
r->value = LOBYTE (HIWORD (words_per_line));
r = sanei_genesys_get_address (reg, 0x36);
r->value = HIBYTE (LOWORD (words_per_line));
r = sanei_genesys_get_address (reg, 0x37);
r->value = LOBYTE (LOWORD (words_per_line));
reg->set16(REG_LPERIOD, exposure_time);
r = sanei_genesys_get_address (reg, 0x34);
r->value = sensor.dummy_pixel;
}
static int
gl841_get_led_exposure(Genesys_Device * dev, const Genesys_Sensor& sensor)
{
int d,r,g,b,m;
if (!dev->model->is_cis)
return 0;
d = dev->reg.find_reg(0x19).value;
r = sensor.exposure.red;
g = sensor.exposure.green;
b = sensor.exposure.blue;
m = r;
if (m < g)
m = g;
if (m < b)
m = b;
return m + d;
}
/** @brief compute exposure time
* Compute exposure time for the device and the given scan resolution
*/
static int
gl841_exposure_time(Genesys_Device *dev, const Genesys_Sensor& sensor,
float slope_dpi,
int scan_step_type,
int start,
int used_pixels)
{
int exposure_time = 0;
int led_exposure;
led_exposure=gl841_get_led_exposure(dev, sensor);
exposure_time = sanei_genesys_exposure_time2(
dev,
slope_dpi,
scan_step_type,
start+used_pixels,/*+tgtime? currently done in sanei_genesys_exposure_time2 with tgtime = 32 pixel*/
led_exposure);
return exposure_time;
}
/**@brief compute scan_step_type
* Try to do at least 4 steps per line. if that is impossible we will have to
* live with that.
* @param dev device
* @param yres motor resolution
*/
static int
gl841_scan_step_type(Genesys_Device *dev, int yres)
{
int scan_step_type=0;
/* TODO : check if there is a bug around the use of max_step_type */
/* should be <=1, need to chek all devices entry in genesys_devices */
if (yres*4 < dev->motor.base_ydpi || dev->motor.max_step_type <= 0)
{
scan_step_type = 0;
}
else if (yres*4 < dev->motor.base_ydpi*2 || dev->motor.max_step_type <= 1)
{
scan_step_type = 1;
}
else
{
scan_step_type = 2;
}
/* this motor behaves differently */
if (dev->model->motor_type==MOTOR_CANONLIDE80)
{
/* driven by 'frequency' tables ? */
scan_step_type = 0;
}
return scan_step_type;
}
static void gl841_compute_session(Genesys_Device* dev, ScanSession& s,
const Genesys_Sensor& sensor)
{
DBG_HELPER(dbg);
compute_session(dev, s, sensor);
s.computed = true;
DBG(DBG_info, "%s ", __func__);
debug_dump(DBG_info, s);
}
static void gl841_assert_supported_resolution(const ScanSession& session)
{
for (unsigned factor : {1, 2, 3, 4, 5, 6, 8, 10, 12, 15}) {
if (session.output_resolution == session.optical_resolution / factor) {
return;
}
}
throw SaneException("Unsupported resolution %d for optical resolution %d",
session.output_resolution, session.optical_resolution);
}
// set up registers for an actual scan this function sets up the scanner to scan in normal or single
// line mode
static void gl841_init_scan_regs(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set* reg, ScanSession& session)
{
DBG_HELPER(dbg);
session.assert_computed();
int start;
int bytes_per_line;
int move;
unsigned int lincnt;
int exposure_time;
int avg;
int slope_dpi = 0;
int dummy = 0;
int scan_step_type = 1;
int max_shift;
size_t requested_buffer_size, read_buffer_size;
/*
results:
for scanner:
start
end
dpiset
exposure_time
dummy
z1
z2
for ordered_read:
dev->words_per_line
dev->read_factor
dev->requested_buffer_size
dev->read_buffer_size
dev->read_pos
dev->read_bytes_in_buffer
dev->read_bytes_left
dev->max_shift
dev->stagger
independent of our calculated values:
dev->total_bytes_read
dev->bytes_to_read
*/
gl841_assert_supported_resolution(session);
/* compute scan parameters values */
/* pixels are allways given at half or full CCD optical resolution */
/* use detected left margin and fixed value */
start = ((sensor.CCD_start_xoffset + session.params.startx) * session.optical_resolution)
/ sensor.optical_res;
start += sensor.dummy_pixel + 1;
if (session.num_staggered_lines > 0) {
start |= 1;
}
/* in case of SHDAREA, we need to align start
* on pixel average factor, startx is different of
* 0 only when calling for function to setup for
* scan, where shading data needs to be align */
if((dev->reg.find_reg(0x01).value & REG01_SHDAREA) != 0)
{
avg = session.optical_resolution / session.params.xres;
start=(start/avg)*avg;
}
/* dummy */
/* dummy lines: may not be usefull, for instance 250 dpi works with 0 or 1
dummy line. Maybe the dummy line adds correctness since the motor runs
slower (higher dpi)
*/
/* for cis this creates better aligned color lines:
dummy \ scanned lines
0: R G B R ...
1: R G B - R ...
2: R G B - - R ...
3: R G B - - - R ...
4: R G B - - - - R ...
5: R G B - - - - - R ...
6: R G B - - - - - - R ...
7: R G B - - - - - - - R ...
8: R G B - - - - - - - - R ...
9: R G B - - - - - - - - - R ...
10: R G B - - - - - - - - - - R ...
11: R G B - - - - - - - - - - - R ...
12: R G B - - - - - - - - - - - - R ...
13: R G B - - - - - - - - - - - - - R ...
14: R G B - - - - - - - - - - - - - - R ...
15: R G B - - - - - - - - - - - - - - - R ...
-- pierre
*/
dummy = 0;
/* slope_dpi */
/* cis color scan is effectively a gray scan with 3 gray lines per color
line and a FILTER of 0 */
if (dev->model->is_cis) {
slope_dpi = session.params.yres* session.params.channels;
} else {
slope_dpi = session.params.yres;
}
slope_dpi = slope_dpi * (1 + dummy);
scan_step_type = gl841_scan_step_type(dev, session.params.yres);
exposure_time = gl841_exposure_time(dev, sensor,
slope_dpi,
scan_step_type,
start,
session.optical_pixels);
DBG(DBG_info, "%s : exposure_time=%d pixels\n", __func__, exposure_time);
/*** optical parameters ***/
/* in case of dynamic lineart, we use an internal 8 bit gray scan
* to generate 1 lineart data */
if (session.params.flags & SCAN_FLAG_DYNAMIC_LINEART) {
session.params.depth = 8;
}
// no 16 bit gamma for this ASIC
if (session.params.depth == 16) {
session.params.flags |= SCAN_FLAG_DISABLE_GAMMA;
}
gl841_init_optical_regs_scan(dev, sensor, reg, exposure_time, session, session.params.xres, start,
session.optical_pixels, session.params.channels,
session.params.depth, session.ccd_size_divisor,
session.params.color_filter);
/*** motor parameters ***/
// scanned area must be enlarged by max color shift needed */
max_shift = sanei_genesys_compute_max_shift(dev, session.params.channels,
session.params.yres, session.params.flags);
lincnt = session.params.lines + max_shift + session.num_staggered_lines;
move = session.params.starty;
DBG(DBG_info, "%s: move=%d steps\n", __func__, move);
/* subtract current head position */
move -= dev->scanhead_position_in_steps;
DBG(DBG_info, "%s: move=%d steps\n", __func__, move);
if (move < 0)
move = 0;
/* round it */
/* the move is not affected by dummy -- pierre */
/* move = ((move + dummy) / (dummy + 1)) * (dummy + 1);
DBG(DBG_info, "%s: move=%d steps\n", __func__, move);*/
if (session.params.flags & SCAN_FLAG_SINGLE_LINE) {
gl841_init_motor_regs_off(reg, dev->model->is_cis?lincnt* session.params.channels:lincnt);
} else {
gl841_init_motor_regs_scan(dev, sensor, reg, exposure_time, slope_dpi, scan_step_type,
dev->model->is_cis ? lincnt * session.params.channels : lincnt,
dummy, move,
(session.params.flags & SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE) ?
MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE : 0);
}
/*** prepares data reordering ***/
/* words_per_line */
bytes_per_line = session.output_pixels;
bytes_per_line = (bytes_per_line * session.params.channels * session.params.depth) / 8;
requested_buffer_size = 8 * bytes_per_line;
/* we must use a round number of bytes_per_line */
if (requested_buffer_size > sanei_genesys_get_bulk_max_size(dev)) {
requested_buffer_size = (sanei_genesys_get_bulk_max_size(dev) / bytes_per_line) * bytes_per_line;
}
read_buffer_size = 2 * requested_buffer_size +
((max_shift + session.num_staggered_lines) * session.optical_pixels *
session.params.channels * session.params.depth) / 8;
dev->read_buffer.clear();
dev->read_buffer.alloc(read_buffer_size);
dev->lines_buffer.clear();
dev->lines_buffer.alloc(read_buffer_size);
dev->shrink_buffer.clear();
dev->shrink_buffer.alloc(requested_buffer_size);
dev->out_buffer.clear();
dev->out_buffer.alloc((8 * dev->settings.pixels * session.params.channels * session.params.depth) / 8);
dev->read_bytes_left = bytes_per_line * lincnt;
DBG(DBG_info, "%s: physical bytes to read = %lu\n", __func__, (u_long) dev->read_bytes_left);
dev->read_active = SANE_TRUE;
dev->session = session;
dev->current_setup.pixels = session.output_pixels;
dev->current_setup.lines = lincnt;
dev->current_setup.exposure_time = exposure_time;
dev->current_setup.xres = session.params.xres;
dev->current_setup.ccd_size_divisor = session.ccd_size_divisor;
dev->current_setup.stagger = session.num_staggered_lines;
dev->current_setup.max_shift = max_shift + session.num_staggered_lines;
/* TODO: should this be done elsewhere? */
/* scan bytes to send to the frontend */
/* theory :
target_size =
(dev->settings.pixels * dev->settings.lines * channels * depth) / 8;
but it suffers from integer overflow so we do the following:
1 bit color images store color data byte-wise, eg byte 0 contains
8 bits of red data, byte 1 contains 8 bits of green, byte 2 contains
8 bits of blue.
This does not fix the overflow, though.
644mp*16 = 10gp, leading to an overflow
-- pierre
*/
dev->total_bytes_read = 0;
if (session.params.depth == 1) {
dev->total_bytes_to_read = ((session.params.get_requested_pixels() * dev->settings.lines) / 8 +
(((session.params.get_requested_pixels() * dev->settings.lines)%8)?1:0)) * session.params.channels;
} else {
dev->total_bytes_to_read =
session.params.get_requested_pixels() * dev->settings.lines * session.params.channels * (session.params.depth / 8);
}
DBG(DBG_info, "%s: total bytes to send = %lu\n", __func__, (u_long) dev->total_bytes_to_read);
/* END TODO */
}
static void gl841_calculate_current_setup(Genesys_Device * dev, const Genesys_Sensor& sensor)
{
int start;
unsigned int lincnt;
int exposure_time;
int slope_dpi = 0;
int dummy = 0;
int scan_step_type = 1;
int max_shift;
DBG(DBG_info, "%s ", __func__);
debug_dump(DBG_info, dev->settings);
/* start */
start = SANE_UNFIX (dev->model->x_offset);
start += dev->settings.tl_x;
start = (start * sensor.optical_res) / MM_PER_INCH;
ScanSession session;
session.params.xres = dev->settings.xres;
session.params.yres = dev->settings.yres;
session.params.startx = start;
session.params.starty = 0; // not used
session.params.pixels = dev->settings.pixels;
session.params.requested_pixels = dev->settings.requested_pixels;
session.params.lines = dev->settings.lines;
session.params.depth = dev->settings.get_depth();
session.params.channels = dev->settings.get_channels();
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = dev->settings.scan_mode;
session.params.color_filter = dev->settings.color_filter;
session.params.flags = 0;
gl841_compute_session(dev, session, sensor);
gl841_assert_supported_resolution(session);
/* compute scan parameters values */
/* pixels are allways given at half or full CCD optical resolution */
/* use detected left margin and fixed value */
start = ((sensor.CCD_start_xoffset + session.params.startx) * session.optical_resolution) / sensor.optical_res;
start += sensor.dummy_pixel + 1;
if (session.num_staggered_lines > 0) {
start |= 1;
}
/* dummy lines: may not be usefull, for instance 250 dpi works with 0 or 1
dummy line. Maybe the dummy line adds correctness since the motor runs
slower (higher dpi)
*/
/* for cis this creates better aligned color lines:
dummy \ scanned lines
0: R G B R ...
1: R G B - R ...
2: R G B - - R ...
3: R G B - - - R ...
4: R G B - - - - R ...
5: R G B - - - - - R ...
6: R G B - - - - - - R ...
7: R G B - - - - - - - R ...
8: R G B - - - - - - - - R ...
9: R G B - - - - - - - - - R ...
10: R G B - - - - - - - - - - R ...
11: R G B - - - - - - - - - - - R ...
12: R G B - - - - - - - - - - - - R ...
13: R G B - - - - - - - - - - - - - R ...
14: R G B - - - - - - - - - - - - - - R ...
15: R G B - - - - - - - - - - - - - - - R ...
-- pierre
*/
dummy = 0;
/* cis color scan is effectively a gray scan with 3 gray lines per color
line and a FILTER of 0 */
if (dev->model->is_cis) {
slope_dpi = session.params.yres * session.params.channels;
} else {
slope_dpi = session.params.yres;
}
slope_dpi = slope_dpi * (1 + dummy);
scan_step_type = gl841_scan_step_type(dev, session.params.yres);
exposure_time = gl841_exposure_time(dev, sensor,
slope_dpi,
scan_step_type,
start,
session.optical_pixels);
DBG(DBG_info, "%s : exposure_time=%d pixels\n", __func__, exposure_time);
/* scanned area must be enlarged by max color shift needed */
max_shift = sanei_genesys_compute_max_shift(dev, session.params.channels,
session.params.yres, 0);
lincnt = session.params.lines + max_shift + session.num_staggered_lines;
dev->session = session;
dev->current_setup.pixels = session.output_pixels;
dev->current_setup.lines = lincnt;
dev->current_setup.exposure_time = exposure_time;
dev->current_setup.xres = session.params.xres;
dev->current_setup.ccd_size_divisor = session.ccd_size_divisor;
dev->current_setup.stagger = session.num_staggered_lines;
dev->current_setup.max_shift = max_shift + session.num_staggered_lines;
}
// for fast power saving methods only, like disabling certain amplifiers
static void gl841_save_power(Genesys_Device* dev, SANE_Bool enable)
{
DBG_HELPER_ARGS(dbg, "enable = %d", enable);
const auto& sensor = sanei_genesys_find_sensor_any(dev);
if (enable)
{
if (dev->model->gpo_type == GPO_CANONLIDE35)
{
/* expect GPIO17 to be enabled, and GPIO9 to be disabled,
while GPIO8 is disabled*/
/* final state: GPIO8 disabled, GPIO9 enabled, GPIO17 disabled,
GPIO18 disabled*/
uint8_t val = dev->read_register(REG6D);
dev->write_register(REG6D, val | 0x80);
sanei_genesys_sleep_ms(1);
/*enable GPIO9*/
val = dev->read_register(REG6C);
dev->write_register(REG6C, val | 0x01);
/*disable GPO17*/
val = dev->read_register(REG6B);
dev->write_register(REG6B, val & ~REG6B_GPO17);
/*disable GPO18*/
val = dev->read_register(REG6B);
dev->write_register(REG6B, val & ~REG6B_GPO18);
sanei_genesys_sleep_ms(1);
val = dev->read_register(REG6D);
dev->write_register(REG6D, val & ~0x80);
}
if (dev->model->gpo_type == GPO_DP685)
{
uint8_t val = dev->read_register(REG6B);
dev->write_register(REG6B, val & ~REG6B_GPO17);
dev->reg.find_reg(0x6b).value &= ~REG6B_GPO17;
dev->calib_reg.find_reg(0x6b).value &= ~REG6B_GPO17;
}
gl841_set_fe(dev, sensor, AFE_POWER_SAVE);
}
else
{
if (dev->model->gpo_type == GPO_CANONLIDE35)
{
/* expect GPIO17 to be enabled, and GPIO9 to be disabled,
while GPIO8 is disabled*/
/* final state: GPIO8 enabled, GPIO9 disabled, GPIO17 enabled,
GPIO18 enabled*/
uint8_t val = dev->read_register(REG6D);
dev->write_register(REG6D, val | 0x80);
sanei_genesys_sleep_ms(10);
/*disable GPIO9*/
val = dev->read_register(REG6C);
dev->write_register(REG6C, val & ~0x01);
/*enable GPIO10*/
val = dev->read_register(REG6C);
dev->write_register(REG6C, val | 0x02);
/*enable GPO17*/
val = dev->read_register(REG6B);
dev->write_register(REG6B, val | REG6B_GPO17);
dev->reg.find_reg(0x6b).value |= REG6B_GPO17;
dev->calib_reg.find_reg(0x6b).value |= REG6B_GPO17;
/*enable GPO18*/
val = dev->read_register(REG6B);
dev->write_register(REG6B, val | REG6B_GPO18);
dev->reg.find_reg(0x6b).value |= REG6B_GPO18;
dev->calib_reg.find_reg(0x6b).value |= REG6B_GPO18;
}
if (dev->model->gpo_type == GPO_DP665
|| dev->model->gpo_type == GPO_DP685)
{
uint8_t val = dev->read_register(REG6B);
dev->write_register(REG6B, val | REG6B_GPO17);
dev->reg.find_reg(0x6b).value |= REG6B_GPO17;
dev->calib_reg.find_reg(0x6b).value |= REG6B_GPO17;
}
}
}
static void gl841_set_powersaving(Genesys_Device* dev, int delay /* in minutes */)
{
DBG_HELPER_ARGS(dbg, "delay = %d", delay);
// FIXME: SEQUENTIAL not really needed in this case
Genesys_Register_Set local_reg(Genesys_Register_Set::SEQUENTIAL);
int rate, exposure_time, tgtime, time;
local_reg.init_reg(0x01, dev->reg.get8(0x01)); /* disable fastmode */
local_reg.init_reg(0x03, dev->reg.get8(0x03)); /* Lamp power control */
local_reg.init_reg(0x05, dev->reg.get8(0x05)); /*& ~REG05_BASESEL*/; /* 24 clocks/pixel */
local_reg.init_reg(0x18, 0x00); // Set CCD type
local_reg.init_reg(0x38, 0x00);
local_reg.init_reg(0x39, 0x00);
// period times for LPeriod, expR,expG,expB, Z1MODE, Z2MODE
local_reg.init_reg(0x1c, dev->reg.get8(0x05) & ~REG1C_TGTIME);
if (!delay) {
local_reg.find_reg(0x03).value = local_reg.find_reg(0x03).value & 0xf0; /* disable lampdog and set lamptime = 0 */
} else if (delay < 20) {
local_reg.find_reg(0x03).value = (local_reg.find_reg(0x03).value & 0xf0) | 0x09; /* enable lampdog and set lamptime = 1 */
} else {
local_reg.find_reg(0x03).value = (local_reg.find_reg(0x03).value & 0xf0) | 0x0f; /* enable lampdog and set lamptime = 7 */
}
time = delay * 1000 * 60; /* -> msec */
exposure_time =
(uint32_t) (time * 32000.0 /
(24.0 * 64.0 * (local_reg.find_reg(0x03).value & REG03_LAMPTIM) *
1024.0) + 0.5);
/* 32000 = system clock, 24 = clocks per pixel */
rate = (exposure_time + 65536) / 65536;
if (rate > 4)
{
rate = 8;
tgtime = 3;
}
else if (rate > 2)
{
rate = 4;
tgtime = 2;
}
else if (rate > 1)
{
rate = 2;
tgtime = 1;
}
else
{
rate = 1;
tgtime = 0;
}
local_reg.find_reg(0x1c).value |= tgtime;
exposure_time /= rate;
if (exposure_time > 65535)
exposure_time = 65535;
local_reg.set8(0x38, exposure_time >> 8);
local_reg.set8(0x39, exposure_time & 255); /* lowbyte */
dev->write_registers(local_reg);
}
static void gl841_start_action(Genesys_Device* dev)
{
DBG_HELPER(dbg);
dev->write_register(0x0f, 0x01);
}
static void gl841_stop_action(Genesys_Device* dev)
{
DBG_HELPER(dbg);
Genesys_Register_Set local_reg;
uint8_t val;
unsigned int loop;
sanei_genesys_get_status(dev, &val);
if (DBG_LEVEL >= DBG_io)
{
sanei_genesys_print_status (val);
}
uint8_t val40 = dev->read_register(0x40);
/* only stop action if needed */
if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG))
{
DBG(DBG_info, "%s: already stopped\n", __func__);
return;
}
local_reg = dev->reg;
gl841_init_optical_regs_off(&local_reg);
gl841_init_motor_regs_off(&local_reg,0);
dev->write_registers(local_reg);
/* looks like writing the right registers to zero is enough to get the chip
out of scan mode into command mode, actually triggering(writing to
register 0x0f) seems to be unnecessary */
loop = 10;
while (loop > 0) {
val40 = dev->read_register(0x40);
if (DBG_LEVEL >= DBG_io) {
sanei_genesys_print_status(val);
}
/* if scanner is in command mode, we are done */
if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG))
{
return;
}
sanei_genesys_sleep_ms(100);
loop--;
}
throw SaneException(SANE_STATUS_IO_ERROR, "could not stop motor");
}
static void gl841_get_paper_sensor(Genesys_Device* dev, SANE_Bool * paper_loaded)
{
DBG_HELPER(dbg);
uint8_t val = dev->read_register(REG6D);
*paper_loaded = (val & 0x1) == 0;
}
static void gl841_eject_document(Genesys_Device* dev)
{
DBG_HELPER(dbg);
Genesys_Register_Set local_reg;
uint8_t val;
SANE_Bool paper_loaded;
unsigned int init_steps;
float feed_mm;
int loop;
if (dev->model->is_sheetfed == SANE_FALSE)
{
DBG(DBG_proc, "%s: there is no \"eject sheet\"-concept for non sheet fed\n", __func__);
DBG(DBG_proc, "%s: finished\n", __func__);
return;
}
local_reg.clear();
val = 0;
sanei_genesys_get_status(dev, &val);
gl841_stop_action(dev);
local_reg = dev->reg;
gl841_init_optical_regs_off(&local_reg);
const auto& sensor = sanei_genesys_find_sensor_any(dev);
gl841_init_motor_regs(dev, sensor, &local_reg,
65536,MOTOR_ACTION_FEED,0);
dev->write_registers(local_reg);
try {
gl841_start_action(dev);
} catch (...) {
catch_all_exceptions(__func__, [&]() { gl841_stop_action(dev); });
// restore original registers
catch_all_exceptions(__func__, [&]()
{
dev->write_registers(dev->reg);
});
throw;
}
gl841_get_paper_sensor(dev, &paper_loaded);
if (paper_loaded)
{
DBG(DBG_info, "%s: paper still loaded\n", __func__);
/* force document TRUE, because it is definitely present */
dev->document = SANE_TRUE;
dev->scanhead_position_in_steps = 0;
loop = 300;
while (loop > 0) /* do not wait longer then 30 seconds */
{
gl841_get_paper_sensor(dev, &paper_loaded);
if (!paper_loaded)
{
DBG(DBG_info, "%s: reached home position\n", __func__);
DBG(DBG_proc, "%s: finished\n", __func__);
break;
}
sanei_genesys_sleep_ms(100);
--loop;
}
if (loop == 0)
{
// when we come here then the scanner needed too much time for this, so we better stop
// the motor
catch_all_exceptions(__func__, [&](){ gl841_stop_action(dev); });
throw SaneException(SANE_STATUS_IO_ERROR,
"timeout while waiting for scanhead to go home");
}
}
feed_mm = SANE_UNFIX(dev->model->eject_feed);
if (dev->document)
{
feed_mm += SANE_UNFIX(dev->model->post_scan);
}
sanei_genesys_read_feed_steps(dev, &init_steps);
/* now feed for extra <number> steps */
loop = 0;
while (loop < 300) /* do not wait longer then 30 seconds */
{
unsigned int steps;
sanei_genesys_read_feed_steps(dev, &steps);
DBG(DBG_info, "%s: init_steps: %d, steps: %d\n", __func__, init_steps, steps);
if (steps > init_steps + (feed_mm * dev->motor.base_ydpi) / MM_PER_INCH)
{
break;
}
sanei_genesys_sleep_ms(100);
++loop;
}
gl841_stop_action(dev);
dev->document = SANE_FALSE;
}
static void gl841_load_document(Genesys_Device* dev)
{
DBG_HELPER(dbg);
SANE_Bool paper_loaded;
int loop = 300;
while (loop > 0) /* do not wait longer then 30 seconds */
{
gl841_get_paper_sensor(dev, &paper_loaded);
if (paper_loaded)
{
DBG(DBG_info, "%s: document inserted\n", __func__);
/* when loading OK, document is here */
dev->document = SANE_TRUE;
// give user some time to place document correctly
sanei_genesys_sleep_ms(1000);
break;
}
sanei_genesys_sleep_ms(100);
--loop;
}
if (loop == 0)
{
// when we come here then the user needed to much time for this
throw SaneException(SANE_STATUS_IO_ERROR, "timeout while waiting for document");
}
}
/**
* detects end of document and adjust current scan
* to take it into account
* used by sheetfed scanners
*/
static void gl841_detect_document_end(Genesys_Device* dev)
{
DBG_HELPER(dbg);
SANE_Bool paper_loaded;
unsigned int scancnt = 0, lincnt, postcnt;
uint8_t val;
size_t total_bytes_to_read;
gl841_get_paper_sensor(dev, &paper_loaded);
/* sheetfed scanner uses home sensor as paper present */
if ((dev->document == SANE_TRUE) && !paper_loaded)
{
DBG(DBG_info, "%s: no more document\n", __func__);
dev->document = SANE_FALSE;
/* we can't rely on total_bytes_to_read since the frontend
* might have been slow to read data, so we re-evaluate the
* amount of data to scan form the hardware settings
*/
try {
sanei_genesys_read_scancnt(dev, &scancnt);
} catch (...) {
dev->total_bytes_to_read = dev->total_bytes_read;
dev->read_bytes_left = 0;
throw;
}
if (dev->settings.scan_mode == ScanColorMode::COLOR_SINGLE_PASS && dev->model->is_cis)
{
scancnt/=3;
}
DBG(DBG_io, "%s: scancnt=%u lines\n", __func__, scancnt);
val = dev->read_register(0x25);
lincnt = 65536 * val;
val = dev->read_register(0x26);
lincnt += 256 * val;
val = dev->read_register(0x27);
lincnt += val;
DBG(DBG_io, "%s: lincnt=%u lines\n", __func__, lincnt);
postcnt = (SANE_UNFIX(dev->model->post_scan)/MM_PER_INCH) * dev->settings.yres;
DBG(DBG_io, "%s: postcnt=%u lines\n", __func__, postcnt);
/* the current scancnt is also the final one, so we use it to
* compute total bytes to read. We also add the line count to eject document */
total_bytes_to_read=(scancnt+postcnt)*dev->wpl;
DBG(DBG_io, "%s: old total_bytes_to_read=%u\n", __func__,
(unsigned int)dev->total_bytes_to_read);
DBG(DBG_io, "%s: new total_bytes_to_read=%u\n", __func__, (unsigned int)total_bytes_to_read);
/* assign new end value */
if(dev->total_bytes_to_read>total_bytes_to_read)
{
DBG(DBG_io, "%s: scan shorten\n", __func__);
dev->total_bytes_to_read=total_bytes_to_read;
}
}
}
// Send the low-level scan command
// todo : is this that useful ?
static void gl841_begin_scan(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set* reg, SANE_Bool start_motor)
{
DBG_HELPER(dbg);
(void) sensor;
// FIXME: SEQUENTIAL not really needed in this case
Genesys_Register_Set local_reg(Genesys_Register_Set::SEQUENTIAL);
uint8_t val;
if (dev->model->gpo_type == GPO_CANONLIDE80) {
val = dev->read_register(REG6B);
val = REG6B_GPO18;
dev->write_register(REG6B, val);
}
if (dev->model->ccd_type != CCD_PLUSTEK_3600) {
local_reg.init_reg(0x03, reg->get8(0x03) | REG03_LAMPPWR);
} else {
// TODO PLUSTEK_3600: why ??
local_reg.init_reg(0x03, reg->get8(0x03));
}
local_reg.init_reg(0x01, reg->get8(0x01) | REG01_SCAN);
local_reg.init_reg(0x0d, 0x01);
if (start_motor) {
local_reg.init_reg(0x0f, 0x01);
} else {
// do not start motor yet
local_reg.init_reg(0x0f, 0x00);
}
dev->write_registers(local_reg);
}
// Send the stop scan command
static void gl841_end_scan(Genesys_Device* dev, Genesys_Register_Set __sane_unused__* reg,
SANE_Bool check_stop)
{
DBG_HELPER_ARGS(dbg, "check_stop = %d", check_stop);
if (dev->model->is_sheetfed != SANE_TRUE) {
gl841_stop_action(dev);
}
}
// Moves the slider to steps
static void gl841_feed(Genesys_Device* dev, int steps)
{
DBG_HELPER_ARGS(dbg, "steps = %d", steps);
Genesys_Register_Set local_reg;
uint8_t val;
int loop;
gl841_stop_action(dev);
// FIXME: we should pick sensor according to the resolution scanner is currently operating on
const auto& sensor = sanei_genesys_find_sensor_any(dev);
local_reg = dev->reg;
gl841_init_optical_regs_off(&local_reg);
gl841_init_motor_regs(dev, sensor, &local_reg, steps,MOTOR_ACTION_FEED,0);
dev->write_registers(local_reg);
try {
gl841_start_action(dev);
} catch (...) {
catch_all_exceptions(__func__, [&]() { gl841_stop_action (dev); });
// restore original registers
catch_all_exceptions(__func__, [&]()
{
dev->write_registers(dev->reg);
});
throw;
}
loop = 0;
while (loop < 300) /* do not wait longer then 30 seconds */
{
sanei_genesys_get_status(dev, &val);
if (!(val & REG41_MOTORENB)) /* motor enabled */
{
DBG(DBG_proc, "%s: finished\n", __func__);
dev->scanhead_position_in_steps += steps;
return;
}
sanei_genesys_sleep_ms(100);
++loop;
}
/* when we come here then the scanner needed too much time for this, so we better stop the motor */
gl841_stop_action (dev);
throw SaneException(SANE_STATUS_IO_ERROR, "timeout while waiting for scanhead to go home");
}
// Moves the slider to the home (top) position slowly
static void gl841_slow_back_home(Genesys_Device* dev, SANE_Bool wait_until_home)
{
DBG_HELPER_ARGS(dbg, "wait_until_home = %d", wait_until_home);
Genesys_Register_Set local_reg;
GenesysRegister *r;
int loop = 0;
if (dev->model->is_sheetfed == SANE_TRUE)
{
DBG(DBG_proc, "%s: there is no \"home\"-concept for sheet fed\n", __func__);
DBG(DBG_proc, "%s: finished\n", __func__);
return;
}
// reset gpio pin
uint8_t val;
if (dev->model->gpo_type == GPO_CANONLIDE35) {
val = dev->read_register(REG6C);
val = dev->gpo.regs.get_value(0x6c);
dev->write_register(REG6C, val);
}
if (dev->model->gpo_type == GPO_CANONLIDE80) {
val = dev->read_register(REG6B);
val = REG6B_GPO18 | REG6B_GPO17;
dev->write_register(REG6B, val);
}
gl841_save_power(dev, SANE_FALSE);
// first read gives HOME_SENSOR true
sanei_genesys_get_status(dev, &val);
if (DBG_LEVEL >= DBG_io)
{
sanei_genesys_print_status (val);
}
sanei_genesys_sleep_ms(100);
// second is reliable
sanei_genesys_get_status(dev, &val);
if (DBG_LEVEL >= DBG_io)
{
sanei_genesys_print_status (val);
}
dev->scanhead_position_in_steps = 0;
if (val & REG41_HOMESNR) /* is sensor at home? */
{
DBG(DBG_info, "%s: already at home, completed\n", __func__);
dev->scanhead_position_in_steps = 0;
return;
}
/* end previous scan if any */
r = sanei_genesys_get_address(&dev->reg, REG01);
r->value &= ~REG01_SCAN;
dev->write_register(REG01, r->value);
/* if motor is on, stop current action */
if (val & REG41_MOTORENB)
{
gl841_stop_action(dev);
}
local_reg = dev->reg;
const auto& sensor = sanei_genesys_find_sensor_any(dev);
gl841_init_motor_regs(dev, sensor, &local_reg, 65536,MOTOR_ACTION_GO_HOME,0);
/* set up for reverse and no scan */
r = sanei_genesys_get_address(&local_reg, REG02);
r->value |= REG02_MTRREV;
r = sanei_genesys_get_address(&local_reg, REG01);
r->value &= ~REG01_SCAN;
dev->write_registers(local_reg);
try {
gl841_start_action(dev);
} catch (...) {
catch_all_exceptions(__func__, [&]() { gl841_stop_action(dev); });
// restore original registers
catch_all_exceptions(__func__, [&]()
{
dev->write_registers(dev->reg);
});
throw;
}
if (wait_until_home)
{
while (loop < 300) /* do not wait longer then 30 seconds */
{
sanei_genesys_get_status(dev, &val);
if (val & REG41_HOMESNR) /* home sensor */
{
DBG(DBG_info, "%s: reached home position\n", __func__);
DBG(DBG_proc, "%s: finished\n", __func__);
return;
}
sanei_genesys_sleep_ms(100);
++loop;
}
// when we come here then the scanner needed too much time for this, so we better stop
// the motor
catch_all_exceptions(__func__, [&](){ gl841_stop_action(dev); });
throw SaneException(SANE_STATUS_IO_ERROR, "timeout while waiting for scanhead to go home");
}
DBG(DBG_info, "%s: scanhead is still moving\n", __func__);
}
// Automatically set top-left edge of the scan area by scanning a 200x200 pixels area at 600 dpi
// from very top of scanner
static void gl841_search_start_position(Genesys_Device* dev)
{
DBG_HELPER(dbg);
int size;
Genesys_Register_Set local_reg;
int steps;
int pixels = 600;
int dpi = 300;
local_reg = dev->reg;
/* sets for a 200 lines * 600 pixels */
/* normal scan with no shading */
// FIXME: the current approach of doing search only for one resolution does not work on scanners
// whith employ different sensors with potentially different settings.
const auto& sensor = sanei_genesys_find_sensor(dev, dpi, 1, ScanMethod::FLATBED);
ScanSession session;
session.params.xres = dpi;
session.params.yres = dpi;
session.params.startx = 0;
session.params.starty = 0; /*we should give a small offset here~60 steps*/
session.params.pixels = 600;
session.params.lines = dev->model->search_lines;
session.params.depth = 8;
session.params.channels = 1;
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = ScanColorMode::GRAY;
session.params.color_filter = ColorFilter::GREEN;
session.params.flags = SCAN_FLAG_DISABLE_SHADING |
SCAN_FLAG_DISABLE_GAMMA |
SCAN_FLAG_IGNORE_LINE_DISTANCE |
SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE;
gl841_compute_session(dev, session, sensor);
gl841_init_scan_regs(dev, sensor, &local_reg, session);
// send to scanner
dev->write_registers(local_reg);
size = pixels * dev->model->search_lines;
std::vector<uint8_t> data(size);
gl841_begin_scan(dev, sensor, &local_reg, SANE_TRUE);
// waits for valid data
do {
sanei_genesys_test_buffer_empty(dev, &steps);
} while (steps);
// now we're on target, we can read data
sanei_genesys_read_data_from_scanner(dev, data.data(), size);
if (DBG_LEVEL >= DBG_data) {
sanei_genesys_write_pnm_file("gl841_search_position.pnm", data.data(), 8, 1, pixels,
dev->model->search_lines);
}
gl841_end_scan(dev, &local_reg, SANE_TRUE);
/* update regs to copy ASIC internal state */
dev->reg = local_reg;
for (auto& sensor_update : sanei_genesys_find_sensors_all_for_write(dev, ScanMethod::FLATBED)) {
sanei_genesys_search_reference_point(dev, sensor_update, data.data(), 0, dpi, pixels,
dev->model->search_lines);
}
}
// sets up register for coarse gain calibration
// todo: check it for scanners using it
static void gl841_init_regs_for_coarse_calibration(Genesys_Device* dev,
const Genesys_Sensor& sensor,
Genesys_Register_Set& regs)
{
DBG_HELPER(dbg);
ScanSession session;
session.params.xres = dev->settings.xres;
session.params.yres = dev->settings.yres;
session.params.startx = 0;
session.params.starty = 0;
session.params.pixels = sensor.optical_res / sensor.ccd_pixels_per_system_pixel();
session.params.lines = 20;
session.params.depth = 16;
session.params.channels = dev->settings.get_channels();
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = dev->settings.scan_mode;
session.params.color_filter = dev->settings.color_filter;
session.params.flags = SCAN_FLAG_DISABLE_SHADING |
SCAN_FLAG_DISABLE_GAMMA |
SCAN_FLAG_SINGLE_LINE |
SCAN_FLAG_IGNORE_LINE_DISTANCE;
gl841_compute_session(dev, session, sensor);
gl841_init_scan_regs(dev, sensor, &regs, session);
DBG(DBG_info, "%s: optical sensor res: %d dpi, actual res: %d\n", __func__,
sensor.optical_res / sensor.ccd_pixels_per_system_pixel(), dev->settings.xres);
dev->write_registers(regs);
/* if (DBG_LEVEL >= DBG_info)
sanei_gl841_print_registers (regs);*/
}
// init registers for shading calibration
static void gl841_init_regs_for_shading(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set& regs)
{
DBG_HELPER_ARGS(dbg, "lines = %d", (int)(dev->calib_lines));
SANE_Int ydpi;
float starty=0;
/* initial calibration reg values */
regs = dev->reg;
ydpi = dev->motor.base_ydpi;
if (dev->model->motor_type == MOTOR_PLUSTEK_3600) /* TODO PLUSTEK_3600: 1200dpi not yet working, produces dark bar */
{
ydpi = 600;
}
if (dev->model->motor_type == MOTOR_CANONLIDE80)
{
ydpi = gl841_get_dpihw(dev);
/* get over extra dark area for this model.
It looks like different devices have dark areas of different width
due to manufacturing variability. The initial value of starty was 140,
but it moves the sensor almost past the dark area completely in places
on certain devices.
On a particular device the black area starts at roughly position
160 to 230 depending on location (the dark area is not completely
parallel to the frame).
*/
starty = 70;
}
dev->calib_channels = 3;
dev->calib_lines = dev->model->shading_lines;
unsigned resolution = sensor.get_logical_hwdpi(dev->settings.xres);
unsigned factor = sensor.optical_res / resolution;
const auto& calib_sensor = sanei_genesys_find_sensor(dev, resolution, dev->calib_channels,
dev->settings.scan_method);
dev->calib_pixels = calib_sensor.sensor_pixels / factor;
ScanSession session;
session.params.xres = resolution;
session.params.yres = ydpi;
session.params.startx = 0;
session.params.starty = starty;
session.params.pixels = dev->calib_pixels;
session.params.lines = dev->calib_lines;
session.params.depth = 16;
session.params.channels = dev->calib_channels;
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
session.params.color_filter = dev->settings.color_filter;
session.params.flags = SCAN_FLAG_DISABLE_SHADING |
SCAN_FLAG_DISABLE_GAMMA |
/*SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE |*/
SCAN_FLAG_IGNORE_LINE_DISTANCE;
gl841_compute_session(dev, session, calib_sensor);
gl841_init_scan_regs(dev, calib_sensor, &regs, session);
dev->scanhead_position_in_steps += dev->calib_lines + starty;
dev->write_registers(regs);
}
// set up registers for the actual scan
static void gl841_init_regs_for_scan(Genesys_Device* dev, const Genesys_Sensor& sensor)
{
DBG_HELPER(dbg);
int flags;
float move;
int move_dpi;
float start;
debug_dump(DBG_info, dev->settings);
/* steps to move to reach scanning area:
- first we move to physical start of scanning
either by a fixed steps amount from the black strip
or by a fixed amount from parking position,
minus the steps done during shading calibration
- then we move by the needed offset whitin physical
scanning area
assumption: steps are expressed at maximum motor resolution
we need:
SANE_Fixed y_offset;
SANE_Fixed y_size;
SANE_Fixed y_offset_calib;
mm_to_steps()=motor dpi / 2.54 / 10=motor dpi / MM_PER_INCH */
/* if scanner uses GENESYS_FLAG_SEARCH_START y_offset is
relative from origin, else, it is from parking position */
move_dpi = dev->motor.base_ydpi;
move = 0;
if (dev->model->flags & GENESYS_FLAG_SEARCH_START)
{
move += SANE_UNFIX (dev->model->y_offset_calib);
}
DBG(DBG_info, "%s move=%f steps\n", __func__, move);
move += SANE_UNFIX (dev->model->y_offset);
DBG(DBG_info, "%s: move=%f steps\n", __func__, move);
move += dev->settings.tl_y;
DBG(DBG_info, "%s: move=%f steps\n", __func__, move);
move = (move * move_dpi) / MM_PER_INCH;
/* start */
start = SANE_UNFIX (dev->model->x_offset);
start += dev->settings.tl_x;
start = (start * sensor.optical_res) / MM_PER_INCH;
flags=0;
/* we enable true gray for cis scanners only, and just when doing
* scan since color calibration is OK for this mode
*/
flags = 0;
/* true gray (led add for cis scanners) */
if(dev->model->is_cis && dev->settings.true_gray
&& dev->settings.scan_mode != ScanColorMode::COLOR_SINGLE_PASS
&& dev->model->ccd_type != CIS_CANONLIDE80)
{
// on Lide 80 the LEDADD bit results in only red LED array being lit
DBG(DBG_io, "%s: activating LEDADD\n", __func__);
flags |= SCAN_FLAG_ENABLE_LEDADD;
}
/* enable emulated lineart from gray data */
if(dev->settings.scan_mode == ScanColorMode::LINEART
&& dev->settings.dynamic_lineart)
{
flags |= SCAN_FLAG_DYNAMIC_LINEART;
}
ScanSession session;
session.params.xres = dev->settings.xres;
session.params.yres = dev->settings.yres;
session.params.startx = start;
session.params.starty = move;
session.params.pixels = dev->settings.pixels;
session.params.requested_pixels = dev->settings.requested_pixels;
session.params.lines = dev->settings.lines;
session.params.depth = dev->settings.get_depth();
session.params.channels = dev->settings.get_channels();
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = dev->settings.scan_mode;
session.params.color_filter = dev->settings.color_filter;
session.params.flags = flags;
gl841_compute_session(dev, session, sensor);
gl841_init_scan_regs(dev, sensor, &dev->reg, session);
}
// this function sends generic gamma table (ie linear ones) or the Sensor specific one if provided
static void gl841_send_gamma_table(Genesys_Device* dev, const Genesys_Sensor& sensor)
{
DBG_HELPER(dbg);
int size;
size = 256;
/* allocate temporary gamma tables: 16 bits words, 3 channels */
std::vector<uint8_t> gamma(size * 2 * 3);
sanei_genesys_generate_gamma_buffer(dev, sensor, 16, 65535, size, gamma.data());
// send address
gl841_set_buffer_address_gamma (dev, 0x00000);
// send data
sanei_genesys_bulk_write_data(dev, 0x28, gamma.data(), size * 2 * 3);
}
/* this function does the led calibration by scanning one line of the calibration
area below scanner's top on white strip.
-needs working coarse/gain
*/
static SensorExposure gl841_led_calibration(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set& regs)
{
DBG_HELPER(dbg);
int num_pixels;
int total_size;
int i, j;
int val;
int channels;
int avg[3], avga, avge;
int turn;
uint16_t exp[3], target;
int move;
SANE_Bool acceptable = SANE_FALSE;
/* these 2 boundaries should be per sensor */
uint16_t min_exposure=500;
uint16_t max_exposure;
/* feed to white strip if needed */
if (dev->model->y_offset_calib>0)
{
move = SANE_UNFIX (dev->model->y_offset_calib);
move = (move * (dev->motor.base_ydpi)) / MM_PER_INCH;
DBG(DBG_io, "%s: move=%d lines\n", __func__, move);
gl841_feed(dev, move);
}
/* offset calibration is always done in color mode */
channels = 3;
unsigned resolution = sensor.get_logical_hwdpi(dev->settings.xres);
unsigned factor = sensor.optical_res / resolution;
const auto& calib_sensor_base = sanei_genesys_find_sensor(dev, resolution, channels,
dev->settings.scan_method);
num_pixels = calib_sensor_base.sensor_pixels / factor;
ScanSession session;
session.params.xres = resolution;
session.params.yres = dev->settings.yres;
session.params.startx = 0;
session.params.starty = 0;
session.params.pixels = num_pixels;
session.params.lines = 1;
session.params.depth = 16;
session.params.channels = channels;
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
session.params.color_filter = dev->settings.color_filter;
session.params.flags = SCAN_FLAG_DISABLE_SHADING |
SCAN_FLAG_DISABLE_GAMMA |
SCAN_FLAG_SINGLE_LINE |
SCAN_FLAG_IGNORE_LINE_DISTANCE;
gl841_compute_session(dev, session, calib_sensor_base);
gl841_init_scan_regs(dev, calib_sensor_base, &regs, session);
dev->write_registers(regs);
total_size = num_pixels * channels * 2 * 1; /* colors * bytes_per_color * scan lines */
std::vector<uint8_t> line(total_size);
/*
we try to get equal bright leds here:
loop:
average per color
adjust exposure times
*/
exp[0] = sensor.exposure.red;
exp[1] = sensor.exposure.green;
exp[2] = sensor.exposure.blue;
turn = 0;
/* max exposure is set to ~2 time initial average
* exposure, or 2 time last calibration exposure */
max_exposure=((exp[0]+exp[1]+exp[2])/3)*2;
target=sensor.gain_white_ref*256;
auto calib_sensor = calib_sensor_base;
do {
calib_sensor.exposure.red = exp[0];
calib_sensor.exposure.green = exp[1];
calib_sensor.exposure.blue = exp[2];
sanei_genesys_set_exposure(regs, calib_sensor.exposure);
dev->write_register(0x10, (calib_sensor.exposure.red >> 8) & 0xff);
dev->write_register(0x11, calib_sensor.exposure.red & 0xff);
dev->write_register(0x12, (calib_sensor.exposure.green >> 8) & 0xff);
dev->write_register(0x13, calib_sensor.exposure.green & 0xff);
dev->write_register(0x14, (calib_sensor.exposure.blue >> 8) & 0xff);
dev->write_register(0x15, calib_sensor.exposure.blue & 0xff);
dev->write_registers(regs);
DBG(DBG_info, "%s: starting line reading\n", __func__);
gl841_begin_scan(dev, calib_sensor, &regs, SANE_TRUE);
sanei_genesys_read_data_from_scanner(dev, line.data(), total_size);
if (DBG_LEVEL >= DBG_data) {
char fn[30];
snprintf(fn, 30, "gl841_led_%d.pnm", turn);
sanei_genesys_write_pnm_file(fn, line.data(), 16, channels, num_pixels, 1);
}
/* compute average */
for (j = 0; j < channels; j++)
{
avg[j] = 0;
for (i = 0; i < num_pixels; i++)
{
if (dev->model->is_cis)
val =
line[i * 2 + j * 2 * num_pixels + 1] * 256 +
line[i * 2 + j * 2 * num_pixels];
else
val =
line[i * 2 * channels + 2 * j + 1] * 256 +
line[i * 2 * channels + 2 * j];
avg[j] += val;
}
avg[j] /= num_pixels;
}
DBG(DBG_info,"%s: average: %d,%d,%d\n", __func__, avg[0], avg[1], avg[2]);
acceptable = SANE_TRUE;
/* exposure is acceptable if each color is in the %5 range
* of other color channels */
if (avg[0] < avg[1] * 0.95 || avg[1] < avg[0] * 0.95 ||
avg[0] < avg[2] * 0.95 || avg[2] < avg[0] * 0.95 ||
avg[1] < avg[2] * 0.95 || avg[2] < avg[1] * 0.95)
{
acceptable = SANE_FALSE;
}
/* led exposure is not acceptable if white level is too low
* ~80 hardcoded value for white level */
if(avg[0]<20000 || avg[1]<20000 || avg[2]<20000)
{
acceptable = SANE_FALSE;
}
/* for scanners using target value */
if(target>0)
{
acceptable = SANE_TRUE;
for(i=0;i<3;i++)
{
/* we accept +- 2% delta from target */
if(abs(avg[i]-target)>target/50)
{
exp[i]=(exp[i]*target)/avg[i];
acceptable = SANE_FALSE;
}
}
}
else
{
if (!acceptable)
{
avga = (avg[0]+avg[1]+avg[2])/3;
exp[0] = (exp[0] * avga) / avg[0];
exp[1] = (exp[1] * avga) / avg[1];
exp[2] = (exp[2] * avga) / avg[2];
/*
keep the resulting exposures below this value.
too long exposure drives the ccd into saturation.
we may fix this by relying on the fact that
we get a striped scan without shading, by means of
statistical calculation
*/
avge = (exp[0] + exp[1] + exp[2]) / 3;
if (avge > max_exposure) {
exp[0] = (exp[0] * max_exposure) / avge;
exp[1] = (exp[1] * max_exposure) / avge;
exp[2] = (exp[2] * max_exposure) / avge;
}
if (avge < min_exposure) {
exp[0] = (exp[0] * min_exposure) / avge;
exp[1] = (exp[1] * min_exposure) / avge;
exp[2] = (exp[2] * min_exposure) / avge;
}
}
}
gl841_stop_action(dev);
turn++;
} while (!acceptable && turn < 100);
DBG(DBG_info,"%s: acceptable exposure: %d,%d,%d\n", __func__, exp[0], exp[1], exp[2]);
gl841_slow_back_home(dev, SANE_TRUE);
return calib_sensor.exposure;
}
/** @brief calibration for AD frontend devices
* offset calibration assumes that the scanning head is on a black area
* For LiDE80 analog frontend
* 0x0003 : is gain and belongs to [0..63]
* 0x0006 : is offset
* We scan a line with no gain until average offset reaches the target
*/
static void ad_fe_offset_calibration(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set& regs)
{
DBG_HELPER(dbg);
int num_pixels;
int total_size;
int i;
int average;
int turn;
int top;
int bottom;
int target;
/* don't impact 3600 behavior since we can't test it */
if (dev->model->ccd_type == CCD_PLUSTEK_3600)
{
return;
}
unsigned resolution = sensor.get_logical_hwdpi(dev->settings.xres);
unsigned factor = sensor.optical_res / resolution;
const auto& calib_sensor = sanei_genesys_find_sensor(dev, resolution, 3,
dev->settings.scan_method);
num_pixels = calib_sensor.sensor_pixels / factor;
ScanSession session;
session.params.xres = resolution;
session.params.yres = dev->settings.yres;
session.params.startx = 0;
session.params.starty = 0;
session.params.pixels = num_pixels;
session.params.lines = 1;
session.params.depth = 8;
session.params.channels = 3;
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
session.params.color_filter = dev->settings.color_filter;
session.params.flags = SCAN_FLAG_DISABLE_SHADING |
SCAN_FLAG_DISABLE_GAMMA |
SCAN_FLAG_SINGLE_LINE |
SCAN_FLAG_IGNORE_LINE_DISTANCE;
gl841_compute_session(dev, session, calib_sensor);
gl841_init_scan_regs(dev, calib_sensor, &regs, session);
total_size = num_pixels * 3 * 2 * 1;
std::vector<uint8_t> line(total_size);
dev->frontend.set_gain(0, 0);
dev->frontend.set_gain(1, 0);
dev->frontend.set_gain(2, 0);
/* loop on scan until target offset is reached */
turn=0;
target=24;
bottom=0;
top=255;
do {
/* set up offset mid range */
dev->frontend.set_offset(0, (top + bottom) / 2);
dev->frontend.set_offset(1, (top + bottom) / 2);
dev->frontend.set_offset(2, (top + bottom) / 2);
/* scan line */
DBG(DBG_info, "%s: starting line reading\n", __func__);
dev->write_registers(regs);
gl841_set_fe(dev, calib_sensor, AFE_SET);
gl841_begin_scan(dev, calib_sensor, &regs, SANE_TRUE);
sanei_genesys_read_data_from_scanner(dev, line.data(), total_size);
gl841_stop_action (dev);
if (DBG_LEVEL >= DBG_data) {
char fn[30];
snprintf(fn, 30, "gl841_offset_%02d.pnm", turn);
sanei_genesys_write_pnm_file(fn, line.data(), 8, 3, num_pixels, 1);
}
/* search for minimal value */
average=0;
for(i=0;i<total_size;i++)
{
average+=line[i];
}
average/=total_size;
DBG(DBG_data, "%s: average=%d\n", __func__, average);
/* if min value is above target, the current value becomes the new top
* else it is the new bottom */
if(average>target)
{
top=(top+bottom)/2;
}
else
{
bottom=(top+bottom)/2;
}
turn++;
} while ((top-bottom)>1 && turn < 100);
// FIXME: don't overwrite the calibrated values
dev->frontend.set_offset(0, 0);
dev->frontend.set_offset(1, 0);
dev->frontend.set_offset(2, 0);
DBG(DBG_info, "%s: offset=(%d,%d,%d)\n", __func__,
dev->frontend.get_offset(0),
dev->frontend.get_offset(1),
dev->frontend.get_offset(2));
}
/* this function does the offset calibration by scanning one line of the calibration
area below scanner's top. There is a black margin and the remaining is white.
sanei_genesys_search_start() must have been called so that the offsets and margins
are allready known.
this function expects the slider to be where?
*/
static void gl841_offset_calibration(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set& regs)
{
DBG_HELPER(dbg);
int num_pixels;
int total_size;
int i, j;
int val;
int channels;
int off[3],offh[3],offl[3],off1[3],off2[3];
int min1[3],min2[3];
int cmin[3],cmax[3];
int turn;
SANE_Bool acceptable = SANE_FALSE;
int mintgt = 0x400;
/* Analog Device fronted have a different calibration */
if ((dev->reg.find_reg(0x04).value & REG04_FESET) == 0x02)
{
return ad_fe_offset_calibration(dev, sensor, regs);
}
/* offset calibration is always done in color mode */
channels = 3;
unsigned resolution = sensor.get_logical_hwdpi(dev->settings.xres);
unsigned factor = sensor.optical_res / resolution;
const auto& calib_sensor = sanei_genesys_find_sensor(dev, resolution, channels,
dev->settings.scan_method);
num_pixels = calib_sensor.sensor_pixels / factor;
ScanSession session;
session.params.xres = resolution;
session.params.yres = dev->settings.yres;
session.params.startx = 0;
session.params.starty = 0;
session.params.pixels = num_pixels;
session.params.lines = 1;
session.params.depth = 16;
session.params.channels = channels;
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
session.params.color_filter = dev->settings.color_filter;
session.params.flags = SCAN_FLAG_DISABLE_SHADING |
SCAN_FLAG_DISABLE_GAMMA |
SCAN_FLAG_SINGLE_LINE |
SCAN_FLAG_IGNORE_LINE_DISTANCE |
SCAN_FLAG_DISABLE_LAMP;
gl841_compute_session(dev, session, calib_sensor);
gl841_init_scan_regs(dev, calib_sensor, &regs, session);
total_size = num_pixels * channels * 2 * 1; /* colors * bytes_per_color * scan lines */
std::vector<uint8_t> first_line(total_size);
std::vector<uint8_t> second_line(total_size);
/* scan first line of data with no offset nor gain */
/*WM8199: gain=0.73; offset=-260mV*/
/*okay. the sensor black level is now at -260mV. we only get 0 from AFE...*/
/* we should probably do real calibration here:
* -detect acceptable offset with binary search
* -calculate offset from this last version
*
* acceptable offset means
* - few completely black pixels(<10%?)
* - few completely white pixels(<10%?)
*
* final offset should map the minimum not completely black
* pixel to 0(16 bits)
*
* this does account for dummy pixels at the end of ccd
* this assumes slider is at black strip(which is not quite as black as "no
* signal").
*
*/
dev->frontend.set_gain(0, 0);
dev->frontend.set_gain(1, 0);
dev->frontend.set_gain(2, 0);
offh[0] = 0xff;
offh[1] = 0xff;
offh[2] = 0xff;
offl[0] = 0x00;
offl[1] = 0x00;
offl[2] = 0x00;
turn = 0;
do {
dev->write_registers(regs);
for (j=0; j < channels; j++) {
off[j] = (offh[j]+offl[j])/2;
dev->frontend.set_offset(j, off[j]);
}
gl841_set_fe(dev, calib_sensor, AFE_SET);
DBG(DBG_info, "%s: starting first line reading\n", __func__);
gl841_begin_scan(dev, calib_sensor, &regs, SANE_TRUE);
sanei_genesys_read_data_from_scanner(dev, first_line.data(), total_size);
if (DBG_LEVEL >= DBG_data) {
char fn[30];
snprintf(fn, 30, "gl841_offset1_%02d.pnm", turn);
sanei_genesys_write_pnm_file(fn, first_line.data(), 16, channels, num_pixels, 1);
}
acceptable = SANE_TRUE;
for (j = 0; j < channels; j++)
{
cmin[j] = 0;
cmax[j] = 0;
for (i = 0; i < num_pixels; i++)
{
if (dev->model->is_cis)
val =
first_line[i * 2 + j * 2 * num_pixels + 1] * 256 +
first_line[i * 2 + j * 2 * num_pixels];
else
val =
first_line[i * 2 * channels + 2 * j + 1] * 256 +
first_line[i * 2 * channels + 2 * j];
if (val < 10)
cmin[j]++;
if (val > 65525)
cmax[j]++;
}
/* TODO the DP685 has a black strip in the middle of the sensor
* should be handled in a more elegant way , could be a bug */
if (dev->model->ccd_type == CCD_DP685)
cmin[j] -= 20;
if (cmin[j] > num_pixels/100) {
acceptable = SANE_FALSE;
if (dev->model->is_cis)
offl[0] = off[0];
else
offl[j] = off[j];
}
if (cmax[j] > num_pixels/100) {
acceptable = SANE_FALSE;
if (dev->model->is_cis)
offh[0] = off[0];
else
offh[j] = off[j];
}
}
DBG(DBG_info,"%s: black/white pixels: %d/%d,%d/%d,%d/%d\n", __func__, cmin[0], cmax[0],
cmin[1], cmax[1], cmin[2], cmax[2]);
if (dev->model->is_cis) {
offh[2] = offh[1] = offh[0];
offl[2] = offl[1] = offl[0];
}
gl841_stop_action(dev);
turn++;
} while (!acceptable && turn < 100);
DBG(DBG_info,"%s: acceptable offsets: %d,%d,%d\n", __func__, off[0], off[1], off[2]);
for (j = 0; j < channels; j++)
{
off1[j] = off[j];
min1[j] = 65536;
for (i = 0; i < num_pixels; i++)
{
if (dev->model->is_cis)
val =
first_line[i * 2 + j * 2 * num_pixels + 1] * 256 +
first_line[i * 2 + j * 2 * num_pixels];
else
val =
first_line[i * 2 * channels + 2 * j + 1] * 256 +
first_line[i * 2 * channels + 2 * j];
if (min1[j] > val && val >= 10)
min1[j] = val;
}
}
offl[0] = off[0];
offl[1] = off[0];
offl[2] = off[0];
turn = 0;
do {
for (j=0; j < channels; j++) {
off[j] = (offh[j]+offl[j])/2;
dev->frontend.set_offset(j, off[j]);
}
gl841_set_fe(dev, calib_sensor, AFE_SET);
DBG(DBG_info, "%s: starting second line reading\n", __func__);
dev->write_registers(regs);
gl841_begin_scan(dev, calib_sensor, &regs, SANE_TRUE);
sanei_genesys_read_data_from_scanner(dev, second_line.data(), total_size);
if (DBG_LEVEL >= DBG_data) {
char fn[30];
snprintf(fn, 30, "gl841_offset2_%02d.pnm", turn);
sanei_genesys_write_pnm_file(fn, second_line.data(), 16, channels, num_pixels, 1);
}
acceptable = SANE_TRUE;
for (j = 0; j < channels; j++)
{
cmin[j] = 0;
cmax[j] = 0;
for (i = 0; i < num_pixels; i++)
{
if (dev->model->is_cis)
val =
second_line[i * 2 + j * 2 * num_pixels + 1] * 256 +
second_line[i * 2 + j * 2 * num_pixels];
else
val =
second_line[i * 2 * channels + 2 * j + 1] * 256 +
second_line[i * 2 * channels + 2 * j];
if (val < 10)
cmin[j]++;
if (val > 65525)
cmax[j]++;
}
if (cmin[j] > num_pixels/100) {
acceptable = SANE_FALSE;
if (dev->model->is_cis)
offl[0] = off[0];
else
offl[j] = off[j];
}
if (cmax[j] > num_pixels/100) {
acceptable = SANE_FALSE;
if (dev->model->is_cis)
offh[0] = off[0];
else
offh[j] = off[j];
}
}
DBG(DBG_info, "%s: black/white pixels: %d/%d,%d/%d,%d/%d\n", __func__, cmin[0], cmax[0],
cmin[1], cmax[1], cmin[2], cmax[2]);
if (dev->model->is_cis) {
offh[2] = offh[1] = offh[0];
offl[2] = offl[1] = offl[0];
}
gl841_stop_action(dev);
turn++;
} while (!acceptable && turn < 100);
DBG(DBG_info, "%s: acceptable offsets: %d,%d,%d\n", __func__, off[0], off[1], off[2]);
for (j = 0; j < channels; j++)
{
off2[j] = off[j];
min2[j] = 65536;
for (i = 0; i < num_pixels; i++)
{
if (dev->model->is_cis)
val =
second_line[i * 2 + j * 2 * num_pixels + 1] * 256 +
second_line[i * 2 + j * 2 * num_pixels];
else
val =
second_line[i * 2 * channels + 2 * j + 1] * 256 +
second_line[i * 2 * channels + 2 * j];
if (min2[j] > val && val != 0)
min2[j] = val;
}
}
DBG(DBG_info, "%s: first set: %d/%d,%d/%d,%d/%d\n", __func__, off1[0], min1[0], off1[1], min1[1],
off1[2], min1[2]);
DBG(DBG_info, "%s: second set: %d/%d,%d/%d,%d/%d\n", __func__, off2[0], min2[0], off2[1], min2[1],
off2[2], min2[2]);
/*
calculate offset for each channel
based on minimal pixel value min1 at offset off1 and minimal pixel value min2
at offset off2
to get min at off, values are linearly interpolated:
min=real+off*fact
min1=real+off1*fact
min2=real+off2*fact
fact=(min1-min2)/(off1-off2)
real=min1-off1*(min1-min2)/(off1-off2)
off=(min-min1+off1*(min1-min2)/(off1-off2))/((min1-min2)/(off1-off2))
off=(min*(off1-off2)+min1*off2-off1*min2)/(min1-min2)
*/
for (j = 0; j < channels; j++)
{
if (min2[j]-min1[j] == 0) {
/*TODO: try to avoid this*/
DBG(DBG_warn, "%s: difference too small\n", __func__);
if (mintgt * (off1[j] - off2[j]) + min1[j] * off2[j] - min2[j] * off1[j] >= 0)
off[j] = 0x0000;
else
off[j] = 0xffff;
} else
off[j] = (mintgt * (off1[j] - off2[j]) + min1[j] * off2[j] - min2[j] * off1[j])/(min1[j]-min2[j]);
if (off[j] > 255)
off[j] = 255;
if (off[j] < 0)
off[j] = 0;
dev->frontend.set_offset(j, off[j]);
}
DBG(DBG_info, "%s: final offsets: %d,%d,%d\n", __func__, off[0], off[1], off[2]);
if (dev->model->is_cis) {
if (off[0] < off[1])
off[0] = off[1];
if (off[0] < off[2])
off[0] = off[2];
dev->frontend.set_offset(0, off[0]);
dev->frontend.set_offset(1, off[0]);
dev->frontend.set_offset(2, off[0]);
}
if (channels == 1)
{
dev->frontend.set_offset(1, dev->frontend.get_offset(0));
dev->frontend.set_offset(2, dev->frontend.get_offset(0));
}
}
/* alternative coarse gain calibration
this on uses the settings from offset_calibration and
uses only one scanline
*/
/*
with offset and coarse calibration we only want to get our input range into
a reasonable shape. the fine calibration of the upper and lower bounds will
be done with shading.
*/
static void gl841_coarse_gain_calibration(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set& regs, int dpi)
{
DBG_HELPER_ARGS(dbg, "dpi=%d", dpi);
int num_pixels;
int total_size;
int i, j, channels;
int max[3];
float gain[3];
int val;
int lines=1;
int move;
/* feed to white strip if needed */
if (dev->model->y_offset_calib>0)
{
move = SANE_UNFIX (dev->model->y_offset_calib);
move = (move * (dev->motor.base_ydpi)) / MM_PER_INCH;
DBG(DBG_io, "%s: move=%d lines\n", __func__, move);
gl841_feed(dev, move);
}
/* coarse gain calibration is allways done in color mode */
channels = 3;
unsigned resolution = sensor.get_logical_hwdpi(dev->settings.xres);
unsigned factor = sensor.optical_res / resolution;
const auto& calib_sensor = sanei_genesys_find_sensor(dev, resolution, channels,
dev->settings.scan_method);
num_pixels = calib_sensor.sensor_pixels / factor;
ScanSession session;
session.params.xres = resolution;
session.params.yres = dev->settings.yres;
session.params.startx = 0;
session.params.starty = 0;
session.params.pixels = num_pixels;
session.params.lines = lines;
session.params.depth = 16;
session.params.channels = channels;
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
session.params.color_filter = dev->settings.color_filter;
session.params.flags = SCAN_FLAG_DISABLE_SHADING |
SCAN_FLAG_DISABLE_GAMMA |
SCAN_FLAG_SINGLE_LINE |
SCAN_FLAG_IGNORE_LINE_DISTANCE;
gl841_compute_session(dev, session, calib_sensor);
gl841_init_scan_regs(dev, calib_sensor, &regs, session);
dev->write_registers(regs);
total_size = num_pixels * channels * 2 * lines; /* colors * bytes_per_color * scan lines */
std::vector<uint8_t> line(total_size);
gl841_begin_scan(dev, calib_sensor, &regs, SANE_TRUE);
sanei_genesys_read_data_from_scanner(dev, line.data(), total_size);
if (DBG_LEVEL >= DBG_data)
sanei_genesys_write_pnm_file("gl841_gain.pnm", line.data(), 16, channels, num_pixels, lines);
/* average high level for each channel and compute gain
to reach the target code
we only use the central half of the CCD data */
for (j = 0; j < channels; j++)
{
max[j] = 0;
for (i = 0; i < num_pixels; i++)
{
if (dev->model->is_cis)
val =
line[i * 2 + j * 2 * num_pixels + 1] * 256 +
line[i * 2 + j * 2 * num_pixels];
else
val =
line[i * 2 * channels + 2 * j + 1] * 256 +
line[i * 2 * channels + 2 * j];
if (val > max[j])
max[j] = val;
}
gain[j] = 65535.0/max[j];
uint8_t out_gain = 0;
if (dev->model->dac_type == DAC_CANONLIDE35 ||
dev->model->dac_type == DAC_WOLFSON_XP300 ||
dev->model->dac_type == DAC_WOLFSON_DSM600)
{
gain[j] *= 0.69;/*seems we don't get the real maximum. empirically derived*/
if (283 - 208/gain[j] > 255)
out_gain = 255;
else if (283 - 208/gain[j] < 0)
out_gain = 0;
else
out_gain = 283 - 208/gain[j];
}
else if (dev->model->dac_type == DAC_CANONLIDE80)
{
out_gain = gain[j]*12;
}
dev->frontend.set_gain(j, out_gain);
DBG(DBG_proc, "%s: channel %d, max=%d, gain = %f, setting:%d\n", __func__, j, max[j], gain[j],
out_gain);
}
for (j = 0; j < channels; j++)
{
if(gain[j] > 10)
{
DBG (DBG_error0, "**********************************************\n");
DBG (DBG_error0, "**********************************************\n");
DBG (DBG_error0, "**** ****\n");
DBG (DBG_error0, "**** Extremely low Brightness detected. ****\n");
DBG (DBG_error0, "**** Check the scanning head is ****\n");
DBG (DBG_error0, "**** unlocked and moving. ****\n");
DBG (DBG_error0, "**** ****\n");
DBG (DBG_error0, "**********************************************\n");
DBG (DBG_error0, "**********************************************\n");
throw SaneException(SANE_STATUS_JAMMED, "scanning head is locked");
}
}
if (dev->model->is_cis) {
uint8_t gain0 = dev->frontend.get_gain(0);
if (gain0 > dev->frontend.get_gain(1)) {
gain0 = dev->frontend.get_gain(1);
}
if (gain0 > dev->frontend.get_gain(2)) {
gain0 = dev->frontend.get_gain(2);
}
dev->frontend.set_gain(0, gain0);
dev->frontend.set_gain(1, gain0);
dev->frontend.set_gain(2, gain0);
}
if (channels == 1) {
dev->frontend.set_gain(0, dev->frontend.get_gain(1));
dev->frontend.set_gain(2, dev->frontend.get_gain(1));
}
DBG(DBG_info, "%s: gain=(%d,%d,%d)\n", __func__,
dev->frontend.get_gain(0),
dev->frontend.get_gain(1),
dev->frontend.get_gain(2));
gl841_stop_action(dev);
gl841_slow_back_home(dev, SANE_TRUE);
}
// wait for lamp warmup by scanning the same line until difference
// between 2 scans is below a threshold
static void gl841_init_regs_for_warmup(Genesys_Device* dev, const Genesys_Sensor& sensor,
Genesys_Register_Set* local_reg, int* channels,
int* total_size)
{
DBG_HELPER(dbg);
int num_pixels = (int) (4 * 300);
*local_reg = dev->reg;
/* okay.. these should be defaults stored somewhere */
dev->frontend.set_gain(0, 0);
dev->frontend.set_gain(1, 0);
dev->frontend.set_gain(2, 0);
dev->frontend.set_offset(0, 0x80);
dev->frontend.set_offset(1, 0x80);
dev->frontend.set_offset(2, 0x80);
ScanSession session;
session.params.xres = sensor.optical_res;
session.params.yres = dev->settings.yres;
session.params.startx = sensor.dummy_pixel;
session.params.starty = 0;
session.params.pixels = num_pixels;
session.params.lines = 1;
session.params.depth = 16;
session.params.channels = *channels;
session.params.scan_method = dev->settings.scan_method;
if (*channels == 3) {
session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
} else {
session.params.scan_mode = ScanColorMode::GRAY;
}
session.params.color_filter = dev->settings.color_filter;
session.params.flags = SCAN_FLAG_DISABLE_SHADING |
SCAN_FLAG_DISABLE_GAMMA |
SCAN_FLAG_SINGLE_LINE |
SCAN_FLAG_IGNORE_LINE_DISTANCE;
gl841_compute_session(dev, session, sensor);
gl841_init_scan_regs(dev, sensor, local_reg, session);
num_pixels = dev->current_setup.pixels;
*total_size = num_pixels * 3 * 2 * 1; /* colors * bytes_per_color * scan lines */
dev->write_registers(*local_reg);
}
/*
* this function moves head without scanning, forward, then backward
* so that the head goes to park position.
* as a by-product, also check for lock
*/
static void sanei_gl841_repark_head(Genesys_Device* dev)
{
DBG_HELPER(dbg);
gl841_feed(dev,232);
// toggle motor flag, put an huge step number and redo move backward
gl841_slow_back_home(dev, SANE_TRUE);
}
static bool
gl841_is_compatible_calibration (Genesys_Device * dev, const Genesys_Sensor& sensor,
Genesys_Calibration_Cache *cache,
int for_overwrite)
{
#ifdef HAVE_SYS_TIME_H
struct timeval time;
#endif
DBG_HELPER(dbg);
/* calibration cache not working yet for this model */
if (dev->model->ccd_type == CCD_PLUSTEK_3600)
{
return false;
}
gl841_calculate_current_setup (dev, sensor);
if (dev->current_setup.ccd_size_divisor != cache->used_setup.ccd_size_divisor)
return false;
/* a cache entry expires after 30 minutes for non sheetfed scanners */
/* this is not taken into account when overwriting cache entries */
#ifdef HAVE_SYS_TIME_H
if(for_overwrite == SANE_FALSE)
{
gettimeofday (&time, NULL);
if ((time.tv_sec - cache->last_calibration > 30 * 60)
&& (dev->model->is_sheetfed == SANE_FALSE))
{
DBG(DBG_proc, "%s: expired entry, non compatible cache\n", __func__);
return false;
}
}
#endif
return true;
}
/*
* initialize ASIC : registers, motor tables, and gamma tables
* then ensure scanner's head is at home
*/
static void gl841_init(Genesys_Device* dev)
{
uint8_t val;
size_t size;
DBG_INIT ();
DBG_HELPER(dbg);
dev->scanhead_position_in_steps = 0;
/* Check if the device has already been initialized and powered up */
if (dev->already_initialized)
{
sanei_genesys_get_status(dev, &val);
if (val & REG41_PWRBIT)
{
DBG(DBG_info, "%s: already initialized\n", __func__);
return;
}
}
dev->dark_average_data.clear();
dev->white_average_data.clear();
dev->settings.color_filter = ColorFilter::RED;
// ASIC reset
dev->write_register(0x0e, 0x01);
dev->write_register(0x0e, 0x00);
/* Set default values for registers */
gl841_init_registers (dev);
// Write initial registers
dev->write_registers(dev->reg);
/* Test ASIC and RAM */
if (!(dev->model->flags & GENESYS_FLAG_LAZY_INIT))
{
sanei_gl841_asic_test(dev);
}
const auto& sensor = sanei_genesys_find_sensor_any(dev);
// Set analog frontend
gl841_set_fe(dev, sensor, AFE_INIT);
// Move home
gl841_slow_back_home(dev, SANE_TRUE);
// Init shading data
sanei_genesys_init_shading_data(dev, sensor, sensor.sensor_pixels);
/* ensure head is correctly parked, and check lock */
if (dev->model->flags & GENESYS_FLAG_REPARK)
{
// FIXME: if repark fails, we should print an error message that the scanner is locked and
// the user should unlock the lock. We should also rethrow with SANE_STATUS_JAMMED
sanei_gl841_repark_head(dev);
}
// send gamma tables
gl841_send_gamma_table(dev, sensor);
/* initial calibration reg values */
Genesys_Register_Set& regs = dev->calib_reg;
regs = dev->reg;
unsigned resolution = sensor.get_logical_hwdpi(300);
unsigned factor = sensor.optical_res / resolution;
const auto& calib_sensor = sanei_genesys_find_sensor(dev, resolution, 3,
dev->settings.scan_method);
unsigned num_pixels = 16 / factor;
ScanSession session;
session.params.xres = resolution;
session.params.yres = 300;
session.params.startx = 0;
session.params.starty = 0;
session.params.pixels = num_pixels;
session.params.lines = 1;
session.params.depth = 16;
session.params.channels = 3;
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
session.params.color_filter = ColorFilter::RED;
session.params.flags = SCAN_FLAG_DISABLE_SHADING |
SCAN_FLAG_DISABLE_GAMMA |
SCAN_FLAG_SINGLE_LINE |
SCAN_FLAG_IGNORE_LINE_DISTANCE;
gl841_compute_session(dev, session, calib_sensor);
gl841_init_scan_regs(dev, calib_sensor, &regs, session);
dev->write_registers(regs);
size = num_pixels * 3 * 2 * 1; // colors * bytes_per_color * scan lines
std::vector<uint8_t> line(size);
DBG(DBG_info, "%s: starting dummy data reading\n", __func__);
gl841_begin_scan(dev, calib_sensor, &regs, SANE_TRUE);
sanei_usb_set_timeout(1000);/* 1 second*/
// ignore errors. next read will succeed
sanei_genesys_read_data_from_scanner(dev, line.data(), size);
sanei_usb_set_timeout(30 * 1000);/* 30 seconds*/
gl841_end_scan(dev, &regs, SANE_TRUE);
regs = dev->reg;
// Set powersaving(default = 15 minutes)
gl841_set_powersaving(dev, 15);
dev->already_initialized = SANE_TRUE;
}
static void gl841_update_hardware_sensors(Genesys_Scanner* s)
{
DBG_HELPER(dbg);
/* do what is needed to get a new set of events, but try to not lose
any of them.
*/
uint8_t val;
if (s->dev->model->gpo_type == GPO_CANONLIDE35
|| s->dev->model->gpo_type == GPO_CANONLIDE80)
{
val = s->dev->read_register(REG6D);
s->buttons[BUTTON_SCAN_SW].write((val & 0x01) == 0);
s->buttons[BUTTON_FILE_SW].write((val & 0x02) == 0);
s->buttons[BUTTON_EMAIL_SW].write((val & 0x04) == 0);
s->buttons[BUTTON_COPY_SW].write((val & 0x08) == 0);
}
if (s->dev->model->gpo_type == GPO_XP300 ||
s->dev->model->gpo_type == GPO_DP665 ||
s->dev->model->gpo_type == GPO_DP685)
{
val = s->dev->read_register(REG6D);
s->buttons[BUTTON_PAGE_LOADED_SW].write((val & 0x01) == 0);
s->buttons[BUTTON_SCAN_SW].write((val & 0x02) == 0);
}
}
/** @brief search for a full width black or white strip.
* This function searches for a black or white stripe across the scanning area.
* When searching backward, the searched area must completely be of the desired
* color since this area will be used for calibration which scans forward.
* @param dev scanner device
* @param forward SANE_TRUE if searching forward, SANE_FALSE if searching backward
* @param black SANE_TRUE if searching for a black strip, SANE_FALSE for a white strip
*/
static void gl841_search_strip(Genesys_Device* dev, const Genesys_Sensor& sensor, SANE_Bool forward,
SANE_Bool black)
{
DBG_HELPER_ARGS(dbg, "%s %s", black ? "black" : "white", forward ? "forward" : "reverse");
unsigned int pixels, lines, channels;
Genesys_Register_Set local_reg;
size_t size;
int steps, depth;
unsigned int pass, count, found, x, y, length;
char title[80];
GenesysRegister *r;
uint8_t white_level=90; /**< default white level to detect white dots */
uint8_t black_level=60; /**< default black level to detect black dots */
/* use maximum gain when doing forward white strip detection
* since we don't have calibrated the sensor yet */
if(!black && forward)
{
dev->frontend.set_gain(0, 0xff);
dev->frontend.set_gain(1, 0xff);
dev->frontend.set_gain(2, 0xff);
}
gl841_set_fe(dev, sensor, AFE_SET);
gl841_stop_action(dev);
// set up for a gray scan at lowest dpi
unsigned dpi = *std::min_element(dev->model->xdpi_values.begin(),
dev->model->xdpi_values.end());
channels = 1;
/* shading calibation is done with dev->motor.base_ydpi */
/* lines = (dev->model->shading_lines * dpi) / dev->motor.base_ydpi; */
lines = (10*dpi)/MM_PER_INCH;
depth = 8;
pixels = (sensor.sensor_pixels * dpi) / sensor.optical_res;
size = pixels * channels * lines * (depth / 8);
std::vector<uint8_t> data(size);
/* 20 cm max length for calibration sheet */
length = ((200 * dpi) / MM_PER_INCH)/lines;
dev->scanhead_position_in_steps = 0;
local_reg = dev->reg;
ScanSession session;
session.params.xres = dpi;
session.params.yres = dpi;
session.params.startx = 0;
session.params.starty = 0;
session.params.pixels = pixels;
session.params.lines = lines;
session.params.depth = depth;
session.params.channels = channels;
session.params.scan_method = dev->settings.scan_method;
session.params.scan_mode = ScanColorMode::GRAY;
session.params.color_filter = ColorFilter::RED;
session.params.flags = SCAN_FLAG_DISABLE_SHADING | SCAN_FLAG_DISABLE_GAMMA;
gl841_compute_session(dev, session, sensor);
gl841_init_scan_regs(dev, sensor, &local_reg, session);
/* set up for reverse or forward */
r = sanei_genesys_get_address(&local_reg, 0x02);
if (forward) {
r->value &= ~4;
} else {
r->value |= 4;
}
dev->write_registers(local_reg);
gl841_begin_scan(dev, sensor, &local_reg, SANE_TRUE);
// waits for valid data
do {
sanei_genesys_test_buffer_empty(dev, &steps);
} while (steps);
// now we're on target, we can read data
sanei_genesys_read_data_from_scanner(dev, data.data(), size);
gl841_stop_action(dev);
pass = 0;
if (DBG_LEVEL >= DBG_data)
{
sprintf(title, "gl841_search_strip_%s_%s%02u.pnm", black ? "black" : "white",
forward ? "fwd" : "bwd", pass);
sanei_genesys_write_pnm_file(title, data.data(), depth, channels, pixels, lines);
}
/* loop until strip is found or maximum pass number done */
found = 0;
while (pass < length && !found)
{
dev->write_registers(local_reg);
//now start scan
gl841_begin_scan(dev, sensor, &local_reg, SANE_TRUE);
// waits for valid data
do {
sanei_genesys_test_buffer_empty(dev, &steps);
} while (steps);
// now we're on target, we can read data
sanei_genesys_read_data_from_scanner(dev, data.data(), size);
gl841_stop_action (dev);
if (DBG_LEVEL >= DBG_data)
{
sprintf(title, "gl841_search_strip_%s_%s%02u.pnm",
black ? "black" : "white", forward ? "fwd" : "bwd", pass);
sanei_genesys_write_pnm_file(title, data.data(), depth, channels, pixels, lines);
}
/* search data to find black strip */
/* when searching forward, we only need one line of the searched color since we
* will scan forward. But when doing backward search, we need all the area of the
* same color */
if (forward)
{
for (y = 0; y < lines && !found; y++)
{
count = 0;
/* count of white/black pixels depending on the color searched */
for (x = 0; x < pixels; x++)
{
/* when searching for black, detect white pixels */
if (black && data[y * pixels + x] > white_level)
{
count++;
}
/* when searching for white, detect black pixels */
if (!black && data[y * pixels + x] < black_level)
{
count++;
}
}
/* at end of line, if count >= 3%, line is not fully of the desired color
* so we must go to next line of the buffer */
/* count*100/pixels < 3 */
if ((count * 100) / pixels < 3)
{
found = 1;
DBG(DBG_data, "%s: strip found forward during pass %d at line %d\n", __func__,
pass, y);
}
else
{
DBG(DBG_data, "%s: pixels=%d, count=%d (%d%%)\n", __func__, pixels, count,
(100 * count) / pixels);
}
}
}
else /* since calibration scans are done forward, we need the whole area
to be of the required color when searching backward */
{
count = 0;
for (y = 0; y < lines; y++)
{
/* count of white/black pixels depending on the color searched */
for (x = 0; x < pixels; x++)
{
/* when searching for black, detect white pixels */
if (black && data[y * pixels + x] > white_level)
{
count++;
}
/* when searching for white, detect black pixels */
if (!black && data[y * pixels + x] < black_level)
{
count++;
}
}
}
/* at end of area, if count >= 3%, area is not fully of the desired color
* so we must go to next buffer */
if ((count * 100) / (pixels * lines) < 3)
{
found = 1;
DBG(DBG_data, "%s: strip found backward during pass %d \n", __func__, pass);
}
else
{
DBG(DBG_data, "%s: pixels=%d, count=%d (%d%%)\n", __func__, pixels, count,
(100 * count) / pixels);
}
}
pass++;
}
if (found)
{
DBG(DBG_info, "%s: %s strip found\n", __func__, black ? "black" : "white");
}
else
{
throw SaneException(SANE_STATUS_UNSUPPORTED, "%s strip not found", black ? "black" : "white");
}
}
/**
* Send shading calibration data. The buffer is considered to always hold values
* for all the channels.
*/
static void gl841_send_shading_data(Genesys_Device* dev, const Genesys_Sensor& sensor,
uint8_t* data, int size)
{
DBG_HELPER_ARGS(dbg, "writing %d bytes of shading data", size);
uint32_t length, x, factor, pixels, i;
uint32_t lines, channels;
uint16_t dpiset, dpihw, strpixel ,endpixel, beginpixel;
uint8_t *ptr,*src;
/* old method if no SHDAREA */
if((dev->reg.find_reg(0x01).value & REG01_SHDAREA) == 0)
{
// start address
sanei_genesys_set_buffer_address(dev, 0x0000);
// shading data whole line
dev->cmd_set->bulk_write_data(dev, 0x3c, data, size);
return;
}
/* data is whole line, we extract only the part for the scanned area */
length = (uint32_t) (size / 3);
strpixel = dev->reg.get16(REG_STRPIXEL);
endpixel = dev->reg.get16(REG_ENDPIXEL);
DBG(DBG_io2, "%s: STRPIXEL=%d, ENDPIXEL=%d, PIXELS=%d\n", __func__, strpixel, endpixel,
endpixel-strpixel);
/* compute deletion/average factor */
dpiset = dev->reg.get16(REG_DPISET);
dpihw = gl841_get_dpihw(dev);
unsigned ccd_size_divisor = dev->current_setup.ccd_size_divisor;
factor=dpihw/dpiset;
DBG(DBG_io2, "%s: dpihw=%d, dpiset=%d, ccd_size_divisor=%d, factor=%d\n", __func__, dpihw, dpiset,
ccd_size_divisor, factor);
/* binary data logging */
if(DBG_LEVEL>=DBG_data)
{
dev->binary=fopen("binary.pnm","wb");
lines = dev->reg.get24(REG_LINCNT);
channels = dev->session.params.channels;
if(dev->binary!=NULL)
{
fprintf(dev->binary,"P5\n%d %d\n%d\n",(endpixel-strpixel)/factor*channels,lines/channels,255);
}
}
/* turn pixel value into bytes 2x16 bits words */
strpixel*=2*2; /* 2 words of 2 bytes */
endpixel*=2*2;
pixels=endpixel-strpixel;
/* shading pixel begin is start pixel minus start pixel during shading
* calibration. Currently only cases handled are full and half ccd resolution.
*/
beginpixel = sensor.CCD_start_xoffset / ccd_size_divisor;
beginpixel += sensor.dummy_pixel + 1;
DBG(DBG_io2, "%s: ORIGIN PIXEL=%d\n", __func__, beginpixel);
beginpixel = (strpixel-beginpixel*2*2)/factor;
DBG(DBG_io2, "%s: BEGIN PIXEL=%d\n", __func__, beginpixel/4);
DBG(DBG_io2, "%s: using chunks of %d bytes (%d shading data pixels)\n", __func__, length,
length/4);
std::vector<uint8_t> buffer(pixels, 0);
/* write actual shading data contigously
* channel by channel, starting at addr 0x0000
* */
for(i=0;i<3;i++)
{
/* copy data to work buffer and process it */
/* coefficent destination */
ptr=buffer.data();
/* iterate on both sensor segment, data has been averaged,
* so is in the right order and we only have to copy it */
for(x=0;x<pixels;x+=4)
{
/* coefficient source */
src=data+x+beginpixel+i*length;
ptr[0]=src[0];
ptr[1]=src[1];
ptr[2]=src[2];
ptr[3]=src[3];
/* next shading coefficient */
ptr+=4;
}
// 0x5400 alignment for LIDE80 internal memory
sanei_genesys_set_buffer_address(dev, 0x5400*i);
dev->cmd_set->bulk_write_data(dev, 0x3c, buffer.data(), pixels);
}
}
/** the gl841 command set */
Genesys_Command_Set gl841_cmd_set = {
"gl841-generic", /* the name of this set */
[](Genesys_Device* dev) -> bool { (void) dev; return true; },
gl841_init,
gl841_init_regs_for_warmup,
gl841_init_regs_for_coarse_calibration,
gl841_init_regs_for_shading,
gl841_init_regs_for_scan,
gl841_get_filter_bit,
gl841_get_lineart_bit,
gl841_get_bitset_bit,
gl841_get_gain4_bit,
gl841_get_fast_feed_bit,
gl841_test_buffer_empty_bit,
gl841_test_motor_flag_bit,
gl841_set_fe,
gl841_set_powersaving,
gl841_save_power,
gl841_begin_scan,
gl841_end_scan,
gl841_send_gamma_table,
gl841_search_start_position,
gl841_offset_calibration,
gl841_coarse_gain_calibration,
gl841_led_calibration,
NULL,
gl841_slow_back_home,
NULL,
sanei_genesys_bulk_write_data,
sanei_genesys_bulk_read_data,
gl841_update_hardware_sensors,
gl841_load_document,
gl841_detect_document_end,
gl841_eject_document,
gl841_search_strip,
gl841_is_compatible_calibration,
NULL,
gl841_send_shading_data,
gl841_calculate_current_setup,
NULL
};
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