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authorJörg Frings-Fürst <debian@jff-webhosting.net>2019-07-31 17:00:20 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2019-07-31 17:00:20 +0200
commit3759ce55ba79b8d3b9d8ed247a252273ee7dade3 (patch)
treed69692a274dd1c7d0672e6bb7155a0fc106f9d49 /backend/genesys_gl847.cc
parentc8bd2513ecba169cff44c09c8058c36987357b18 (diff)
parent1687222e1b9e74c89cafbb5910e72d8ec7bfd40f (diff)
Update upstream source from tag 'upstream/1.0.28'
Update to upstream version '1.0.28' with Debian dir ec5bb298266630fc3801ff6dc0c258f6df7ba979
Diffstat (limited to 'backend/genesys_gl847.cc')
-rw-r--r--backend/genesys_gl847.cc3517
1 files changed, 3517 insertions, 0 deletions
diff --git a/backend/genesys_gl847.cc b/backend/genesys_gl847.cc
new file mode 100644
index 0000000..b5748a5
--- /dev/null
+++ b/backend/genesys_gl847.cc
@@ -0,0 +1,3517 @@
+/* sane - Scanner Access Now Easy.
+
+ Copyright (C) 2010-2013 Stéphane Voltz <stef.dev@free.fr>
+
+
+ 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_gl847.h"
+
+#include <vector>
+
+/****************************************************************************
+ Mid level functions
+ ****************************************************************************/
+
+static SANE_Bool
+gl847_get_fast_feed_bit (Genesys_Register_Set * regs)
+{
+ GenesysRegister *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG02);
+ if (r && (r->value & REG02_FASTFED))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl847_get_filter_bit (Genesys_Register_Set * regs)
+{
+ GenesysRegister *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG04);
+ if (r && (r->value & REG04_FILTER))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl847_get_lineart_bit (Genesys_Register_Set * regs)
+{
+ GenesysRegister *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG04);
+ if (r && (r->value & REG04_LINEART))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl847_get_bitset_bit (Genesys_Register_Set * regs)
+{
+ GenesysRegister *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG04);
+ if (r && (r->value & REG04_BITSET))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl847_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
+gl847_test_buffer_empty_bit (SANE_Byte val)
+{
+ if (val & REG41_BUFEMPTY)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl847_test_motor_flag_bit (SANE_Byte val)
+{
+ if (val & REG41_MOTORENB)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+/**
+ * compute the step multiplier used
+ */
+static int
+gl847_get_step_multiplier (Genesys_Register_Set * regs)
+{
+ GenesysRegister *r = NULL;
+ int value = 1;
+
+ r = sanei_genesys_get_address (regs, 0x9d);
+ if (r != NULL)
+ {
+ value = (r->value & 0x0f)>>1;
+ value = 1 << value;
+ }
+ DBG (DBG_io, "%s: step multiplier is %d\n", __func__, value);
+ return value;
+}
+
+/** @brief sensor profile
+ * search for the database of motor profiles and get the best one. Each
+ * profile is at a specific dpihw. Use LiDE 110 table by default.
+ * @param sensor_type sensor id
+ * @param dpi hardware dpi for the scan
+ * @return a pointer to a Sensor_Profile struct
+ */
+static Sensor_Profile *get_sensor_profile(int sensor_type, int dpi)
+{
+ unsigned int i;
+ int idx;
+
+ i=0;
+ idx=-1;
+ while(i<sizeof(sensors)/sizeof(Sensor_Profile))
+ {
+ /* exact match */
+ if(sensors[i].sensor_type==sensor_type && sensors[i].dpi==dpi)
+ {
+ return &(sensors[i]);
+ }
+
+ /* closest match */
+ if(sensors[i].sensor_type==sensor_type)
+ {
+ if(idx<0)
+ {
+ idx=i;
+ }
+ else
+ {
+ if(sensors[i].dpi>=dpi
+ && sensors[i].dpi<sensors[idx].dpi)
+ {
+ idx=i;
+ }
+ }
+ }
+ i++;
+ }
+
+ /* default fallback */
+ if(idx<0)
+ {
+ DBG (DBG_warn,"%s: using default sensor profile\n",__func__);
+ idx=0;
+ }
+
+ return &(sensors[idx]);
+}
+
+/**@brief compute exposure to use
+ * compute the sensor exposure based on target resolution
+ */
+static int gl847_compute_exposure(Genesys_Device *dev, int xres)
+{
+ Sensor_Profile* sensor_profile=get_sensor_profile(dev->model->ccd_type, xres);
+ return sensor_profile->exposure;
+}
+
+
+/** @brief sensor specific settings
+*/
+static void gl847_setup_sensor(Genesys_Device * dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set * regs, int dpi)
+{
+ GenesysRegister *r;
+ int dpihw;
+ uint16_t exp;
+
+ DBGSTART;
+ dpihw=sanei_genesys_compute_dpihw(dev, sensor, dpi);
+
+ for (uint16_t addr = 0x16; addr < 0x1e; addr++) {
+ regs->set8(addr, sensor.custom_regs.get_value(addr));
+ }
+
+ for (uint16_t addr = 0x52; addr < 0x52 + 9; addr++) {
+ regs->set8(addr, sensor.custom_regs.get_value(addr));
+ }
+
+ /* set EXPDUMMY and CKxMAP */
+ dpihw=sanei_genesys_compute_dpihw(dev, sensor, dpi);
+ Sensor_Profile* sensor_profile=get_sensor_profile(dev->model->ccd_type, dpihw);
+
+ sanei_genesys_set_reg_from_set(regs,REG_EXPDMY,(uint8_t)((sensor_profile->expdummy) & 0xff));
+
+ /* if no calibration has been done, set default values for exposures */
+ exp = sensor.exposure.red;
+ if(exp==0)
+ {
+ exp=sensor_profile->expr;
+ }
+ sanei_genesys_set_double(regs,REG_EXPR,exp);
+
+ exp = sensor.exposure.green;
+ if(exp==0)
+ {
+ exp=sensor_profile->expg;
+ }
+ sanei_genesys_set_double(regs,REG_EXPG,exp);
+
+ exp = sensor.exposure.blue;
+ if(exp==0)
+ {
+ exp=sensor_profile->expb;
+ }
+ sanei_genesys_set_double(regs,REG_EXPB,exp);
+
+ sanei_genesys_set_triple(regs,REG_CK1MAP,sensor_profile->ck1map);
+ sanei_genesys_set_triple(regs,REG_CK3MAP,sensor_profile->ck3map);
+ sanei_genesys_set_triple(regs,REG_CK4MAP,sensor_profile->ck4map);
+
+ /* order of the sub-segments */
+ dev->order=sensor_profile->order;
+
+ r = sanei_genesys_get_address (regs, 0x17);
+ r->value = sensor_profile->r17;
+
+ DBGCOMPLETED;
+}
+
+
+/** @brief set all registers to default values .
+ * This function is called only once at the beginning and
+ * fills register startup values for registers reused across scans.
+ * Those that are rarely modified or not modified are written
+ * individually.
+ * @param dev device structure holding register set to initialize
+ */
+static void
+gl847_init_registers (Genesys_Device * dev)
+{
+ int lide700=0;
+ uint8_t val;
+
+ DBGSTART;
+ /* 700F class needs some different initial settings */
+ if (dev->model->model_id == MODEL_CANON_LIDE_700F)
+ {
+ lide700 = 1;
+ }
+
+ dev->reg.clear();
+
+ SETREG (0x01, 0x82);
+ SETREG (0x02, 0x18);
+ SETREG (0x03, 0x50);
+ SETREG (0x04, 0x12);
+ SETREG (0x05, 0x80);
+ SETREG (0x06, 0x50); /* FASTMODE + POWERBIT */
+ SETREG (0x08, 0x10);
+ SETREG (0x09, 0x01);
+ SETREG (0x0a, 0x00);
+ SETREG (0x0b, 0x01);
+ SETREG (0x0c, 0x02);
+
+ /* LED exposures */
+ SETREG (0x10, 0x00);
+ SETREG (0x11, 0x00);
+ SETREG (0x12, 0x00);
+ SETREG (0x13, 0x00);
+ SETREG (0x14, 0x00);
+ SETREG (0x15, 0x00);
+
+ SETREG (0x16, 0x10);
+ SETREG (0x17, 0x08);
+ SETREG (0x18, 0x00);
+
+ /* EXPDMY */
+ SETREG (0x19, 0x50);
+
+ SETREG (0x1a, 0x34);
+ SETREG (0x1b, 0x00);
+ SETREG (0x1c, 0x02);
+ SETREG (0x1d, 0x04);
+ SETREG (0x1e, 0x10);
+ SETREG (0x1f, 0x04);
+ SETREG (0x20, 0x02);
+ SETREG (0x21, 0x10);
+ SETREG (0x22, 0x7f);
+ SETREG (0x23, 0x7f);
+ SETREG (0x24, 0x10);
+ SETREG (0x25, 0x00);
+ SETREG (0x26, 0x00);
+ SETREG (0x27, 0x00);
+ SETREG (0x2c, 0x09);
+ SETREG (0x2d, 0x60);
+ SETREG (0x2e, 0x80);
+ SETREG (0x2f, 0x80);
+ SETREG (0x30, 0x00);
+ SETREG (0x31, 0x10);
+ SETREG (0x32, 0x15);
+ SETREG (0x33, 0x0e);
+ SETREG (0x34, 0x40);
+ SETREG (0x35, 0x00);
+ SETREG (0x36, 0x2a);
+ SETREG (0x37, 0x30);
+ SETREG (0x38, 0x2a);
+ SETREG (0x39, 0xf8);
+ SETREG (0x3d, 0x00);
+ SETREG (0x3e, 0x00);
+ SETREG (0x3f, 0x00);
+ SETREG (0x52, 0x03);
+ SETREG (0x53, 0x07);
+ SETREG (0x54, 0x00);
+ SETREG (0x55, 0x00);
+ SETREG (0x56, 0x00);
+ SETREG (0x57, 0x00);
+ SETREG (0x58, 0x2a);
+ SETREG (0x59, 0xe1);
+ SETREG (0x5a, 0x55);
+ SETREG (0x5e, 0x41);
+ SETREG (0x5f, 0x40);
+ SETREG (0x60, 0x00);
+ SETREG (0x61, 0x21);
+ SETREG (0x62, 0x40);
+ SETREG (0x63, 0x00);
+ SETREG (0x64, 0x21);
+ SETREG (0x65, 0x40);
+ SETREG (0x67, 0x80);
+ SETREG (0x68, 0x80);
+ SETREG (0x69, 0x20);
+ SETREG (0x6a, 0x20);
+
+ /* CK1MAP */
+ SETREG (0x74, 0x00);
+ SETREG (0x75, 0x00);
+ SETREG (0x76, 0x3c);
+
+ /* CK3MAP */
+ SETREG (0x77, 0x00);
+ SETREG (0x78, 0x00);
+ SETREG (0x79, 0x9f);
+
+ /* CK4MAP */
+ SETREG (0x7a, 0x00);
+ SETREG (0x7b, 0x00);
+ SETREG (0x7c, 0x55);
+
+ SETREG (0x7d, 0x00);
+
+ /* NOTE: autoconf is a non working option */
+ SETREG (0x87, 0x02);
+ SETREG (0x9d, 0x06);
+ SETREG (0xa2, 0x0f);
+ SETREG (0xbd, 0x18);
+ SETREG (0xfe, 0x08);
+
+ /* gamma[0] and gamma[256] values */
+ SETREG (0xbe, 0x00);
+ SETREG (0xc5, 0x00);
+ SETREG (0xc6, 0x00);
+ SETREG (0xc7, 0x00);
+ SETREG (0xc8, 0x00);
+ SETREG (0xc9, 0x00);
+ SETREG (0xca, 0x00);
+
+ /* LiDE 700 fixups */
+ if(lide700)
+ {
+ SETREG (0x5f, 0x04);
+ SETREG (0x7d, 0x80);
+
+ /* we write to these registers only once */
+ val=0;
+ sanei_genesys_write_register (dev, REG7E, val);
+ sanei_genesys_write_register (dev, REG9E, val);
+ sanei_genesys_write_register (dev, REG9F, val);
+ sanei_genesys_write_register (dev, REGAB, val);
+ }
+
+ /* fine tune upon device description */
+ dev->reg.find_reg(0x05).value &= ~REG05_DPIHW;
+ switch (sanei_genesys_find_sensor_any(dev).optical_res)
+ {
+ case 600:
+ dev->reg.find_reg(0x05).value |= REG05_DPIHW_600;
+ break;
+ case 1200:
+ dev->reg.find_reg(0x05).value |= REG05_DPIHW_1200;
+ break;
+ case 2400:
+ dev->reg.find_reg(0x05).value |= REG05_DPIHW_2400;
+ break;
+ case 4800:
+ dev->reg.find_reg(0x05).value |= REG05_DPIHW_4800;
+ break;
+ }
+
+ /* initalize calibration reg */
+ dev->calib_reg = dev->reg;
+
+ DBGCOMPLETED;
+}
+
+/**@brief send slope table for motor movement
+ * Send slope_table in machine byte order
+ * @param dev device to send slope table
+ * @param table_nr index of the slope table in ASIC memory
+ * Must be in the [0-4] range.
+ * @param slope_table pointer to 16 bit values array of the slope table
+ * @param steps number of elements in the slope table
+ */
+static SANE_Status
+gl847_send_slope_table (Genesys_Device * dev, int table_nr,
+ uint16_t * slope_table, int steps)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int i;
+ char msg[10000];
+
+ DBG (DBG_proc, "%s (table_nr = %d, steps = %d)\n", __func__,
+ table_nr, steps);
+
+ /* sanity check */
+ if(table_nr<0 || table_nr>4)
+ {
+ DBG (DBG_error, "%s: invalid table number %d!\n", __func__, table_nr);
+ return SANE_STATUS_INVAL;
+ }
+
+ 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);
+ }
+
+ /* slope table addresses are fixed */
+ status = sanei_genesys_write_ahb(dev, 0x10000000 + 0x4000 * table_nr, steps * 2, table.data());
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: write to AHB failed writing slope table %d (%s)\n", __func__, table_nr,
+ sane_strstatus(status));
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/**
+ * Set register values of Analog Device type frontend
+ * */
+static SANE_Status
+gl847_set_ad_fe (Genesys_Device * dev, uint8_t set)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int i;
+ uint8_t val8;
+
+ DBGSTART;
+
+ /* wait for FE to be ready */
+ status = sanei_genesys_get_status (dev, &val8);
+ while (val8 & REG41_FEBUSY)
+ {
+ sanei_genesys_sleep_ms(10);
+ status = sanei_genesys_get_status (dev, &val8);
+ };
+
+ if (set == AFE_INIT)
+ {
+ DBG(DBG_proc, "%s(): setting DAC %u\n", __func__, dev->model->dac_type);
+
+ dev->frontend = dev->frontend_initial;
+ }
+
+ /* reset DAC */
+ status = sanei_genesys_fe_write_data (dev, 0x00, 0x80);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to write reg0: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* write them to analog frontend */
+ status = sanei_genesys_fe_write_data(dev, 0x00, dev->frontend.regs.get_value(0x00));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to write reg0: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+ status = sanei_genesys_fe_write_data(dev, 0x01, dev->frontend.regs.get_value(0x01));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to write reg1: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ status = sanei_genesys_fe_write_data(dev, 0x02 + i, dev->frontend.get_gain(i));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to write gain %d: %s\n", __func__, i, sane_strstatus(status));
+ return status;
+ }
+ }
+ for (i = 0; i < 3; i++)
+ {
+ status = sanei_genesys_fe_write_data(dev, 0x05 + i, dev->frontend.get_offset(i));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to write offset %d: %s\n", __func__, i,
+ sane_strstatus(status));
+ return status;
+ }
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+static SANE_Status
+gl847_homsnr_gpio(Genesys_Device *dev)
+{
+uint8_t val;
+SANE_Status status=SANE_STATUS_GOOD;
+
+ if (dev->model->gpo_type == GPO_CANONLIDE700)
+ {
+ RIE (sanei_genesys_read_register (dev, REG6C, &val));
+ val &= ~REG6C_GPIO10;
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+ }
+ else
+ {
+ RIE (sanei_genesys_read_register (dev, REG6C, &val));
+ val |= REG6C_GPIO10;
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+ }
+ return status;
+}
+
+/* Set values of analog frontend */
+static SANE_Status
+gl847_set_fe(Genesys_Device * dev, const Genesys_Sensor& sensor, uint8_t set)
+{
+ (void) sensor;
+
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+
+ DBG(DBG_proc, "%s (%s)\n", __func__, set == AFE_INIT ? "init" : set == AFE_SET ? "set" : set ==
+ AFE_POWER_SAVE ? "powersave" : "huh?");
+
+ RIE (sanei_genesys_read_register (dev, REG04, &val));
+
+ /* route to AD devices */
+ if ((val & REG04_FESET) == 0x02)
+ {
+ return gl847_set_ad_fe (dev, set);
+ }
+
+ /* for now there is no support yet for wolfson fe */
+ DBG(DBG_proc, "%s(): unsupported frontend type %d\n", __func__,
+ dev->reg.find_reg(0x04).value & REG04_FESET);
+
+ DBGCOMPLETED;
+ return SANE_STATUS_UNSUPPORTED;
+}
+
+
+/** @brief set up motor related register for scan
+ */
+static SANE_Status
+gl847_init_motor_regs_scan (Genesys_Device * dev,
+ const Genesys_Sensor& sensor,
+ Genesys_Register_Set * reg,
+ unsigned int scan_exposure_time,
+ float scan_yres,
+ int scan_step_type,
+ unsigned int scan_lines,
+ unsigned int scan_dummy,
+ unsigned int feed_steps,
+ int scan_power_mode,
+ unsigned int flags)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int use_fast_fed;
+ unsigned int fast_dpi;
+ uint16_t scan_table[SLOPE_TABLE_SIZE];
+ uint16_t fast_table[SLOPE_TABLE_SIZE];
+ int scan_steps, fast_steps, factor;
+ unsigned int feedl, dist;
+ GenesysRegister *r;
+ uint32_t z1, z2;
+ unsigned int min_restep = 0x20;
+ uint8_t val, effective;
+ int fast_step_type;
+ unsigned int ccdlmt,tgtime;
+
+ DBGSTART;
+ DBG(DBG_proc, "%s : scan_exposure_time=%d, can_yres=%g, scan_step_type=%d, scan_lines=%d, "
+ "scan_dummy=%d, feed_steps=%d, scan_power_mode=%d, flags=%x\n", __func__, scan_exposure_time,
+ scan_yres, scan_step_type, scan_lines, scan_dummy, feed_steps, scan_power_mode, flags);
+
+ /* get step multiplier */
+ factor = gl847_get_step_multiplier (reg);
+
+ use_fast_fed=0;
+ /* no fast fed since feed works well */
+ if(dev->settings.yres==4444 && feed_steps>100
+ && ((flags & MOTOR_FLAG_FEED)==0))
+ {
+ use_fast_fed=1;
+ }
+ DBG(DBG_io, "%s: use_fast_fed=%d\n", __func__, use_fast_fed);
+
+ sanei_genesys_set_triple(reg, REG_LINCNT, scan_lines);
+ DBG(DBG_io, "%s: lincnt=%d\n", __func__, scan_lines);
+
+ /* compute register 02 value */
+ r = sanei_genesys_get_address (reg, REG02);
+ r->value = 0x00;
+ sanei_genesys_set_motor_power(*reg, true);
+
+ if (use_fast_fed)
+ r->value |= REG02_FASTFED;
+ else
+ r->value &= ~REG02_FASTFED;
+
+ if (flags & MOTOR_FLAG_AUTO_GO_HOME)
+ r->value |= REG02_AGOHOME | REG02_NOTHOME;
+
+ if ((flags & MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE)
+ ||(scan_yres>=sensor.optical_res))
+ {
+ r->value |= REG02_ACDCDIS;
+ }
+
+ /* scan and backtracking slope table */
+ sanei_genesys_slope_table(scan_table,
+ &scan_steps,
+ scan_yres,
+ scan_exposure_time,
+ dev->motor.base_ydpi,
+ scan_step_type,
+ factor,
+ dev->model->motor_type,
+ gl847_motors);
+ RIE(gl847_send_slope_table (dev, SCAN_TABLE, scan_table, scan_steps*factor));
+ RIE(gl847_send_slope_table (dev, BACKTRACK_TABLE, scan_table, scan_steps*factor));
+
+ /* fast table */
+ fast_dpi=sanei_genesys_get_lowest_ydpi(dev);
+ fast_step_type=scan_step_type;
+ if(scan_step_type>=2)
+ {
+ fast_step_type=2;
+ }
+
+ sanei_genesys_slope_table(fast_table,
+ &fast_steps,
+ fast_dpi,
+ scan_exposure_time,
+ dev->motor.base_ydpi,
+ fast_step_type,
+ factor,
+ dev->model->motor_type,
+ gl847_motors);
+
+ /* manual override of high start value */
+ fast_table[0]=fast_table[1];
+
+ RIE(gl847_send_slope_table (dev, STOP_TABLE, fast_table, fast_steps*factor));
+ RIE(gl847_send_slope_table (dev, FAST_TABLE, fast_table, fast_steps*factor));
+ RIE(gl847_send_slope_table (dev, HOME_TABLE, fast_table, fast_steps*factor));
+
+ /* correct move distance by acceleration and deceleration amounts */
+ feedl=feed_steps;
+ if (use_fast_fed)
+ {
+ feedl<<=fast_step_type;
+ dist=(scan_steps+2*fast_steps)*factor;
+ /* TODO read and decode REGAB */
+ r = sanei_genesys_get_address (reg, 0x5e);
+ dist += (r->value & 31);
+ /* FEDCNT */
+ r = sanei_genesys_get_address (reg, REG_FEDCNT);
+ dist += r->value;
+ }
+ else
+ {
+ feedl<<=scan_step_type;
+ dist=scan_steps*factor;
+ if (flags & MOTOR_FLAG_FEED)
+ dist *=2;
+ }
+ DBG(DBG_io2, "%s: scan steps=%d\n", __func__, scan_steps);
+ DBG(DBG_io2, "%s: acceleration distance=%d\n", __func__, dist);
+
+ /* check for overflow */
+ if(dist<feedl)
+ feedl -= dist;
+ else
+ feedl = 0;
+
+ sanei_genesys_set_triple(reg,REG_FEEDL,feedl);
+ DBG(DBG_io ,"%s: feedl=%d\n", __func__, feedl);
+
+ r = sanei_genesys_get_address (reg, REG0C);
+ ccdlmt=(r->value & REG0C_CCDLMT)+1;
+
+ r = sanei_genesys_get_address (reg, REG1C);
+ tgtime=1<<(r->value & REG1C_TGTIME);
+
+ /* hi res motor speed GPIO */
+ RIE (sanei_genesys_read_register (dev, REG6C, &effective));
+
+ /* if quarter step, bipolar Vref2 */
+ if (scan_step_type > 1)
+ {
+ if (scan_step_type < 3)
+ {
+ val = effective & ~REG6C_GPIO13;
+ }
+ else
+ {
+ val = effective | REG6C_GPIO13;
+ }
+ }
+ else
+ {
+ val = effective;
+ }
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+
+ /* effective scan */
+ RIE (sanei_genesys_read_register (dev, REG6C, &effective));
+ val = effective | REG6C_GPIO10;
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+
+ min_restep=scan_steps/2-1;
+ if (min_restep < 1)
+ min_restep = 1;
+ r = sanei_genesys_get_address (reg, REG_FWDSTEP);
+ r->value = min_restep;
+ r = sanei_genesys_get_address (reg, REG_BWDSTEP);
+ r->value = min_restep;
+
+ sanei_genesys_calculate_zmode2(use_fast_fed,
+ scan_exposure_time*ccdlmt*tgtime,
+ scan_table,
+ scan_steps*factor,
+ feedl,
+ min_restep*factor,
+ &z1,
+ &z2);
+
+ DBG(DBG_info, "%s: z1 = %d\n", __func__, z1);
+ sanei_genesys_set_triple(reg, REG60, z1 | (scan_step_type << (16+REG60S_STEPSEL)));
+
+ DBG(DBG_info, "%s: z2 = %d\n", __func__, z2);
+ sanei_genesys_set_triple(reg, REG63, z2 | (scan_step_type << (16+REG63S_FSTPSEL)));
+
+ r = sanei_genesys_get_address (reg, 0x1e);
+ r->value &= 0xf0; /* 0 dummy lines */
+ r->value |= scan_dummy; /* dummy lines */
+
+ r = sanei_genesys_get_address (reg, REG67);
+ r->value = REG67_MTRPWM;
+
+ r = sanei_genesys_get_address (reg, REG68);
+ r->value = REG68_FASTPWM;
+
+ r = sanei_genesys_get_address (reg, REG_STEPNO);
+ r->value = scan_steps;
+
+ r = sanei_genesys_get_address (reg, REG_FASTNO);
+ r->value = scan_steps;
+
+ r = sanei_genesys_get_address (reg, REG_FSHDEC);
+ r->value = scan_steps;
+
+ r = sanei_genesys_get_address (reg, REG_FMOVNO);
+ r->value = fast_steps;
+
+ r = sanei_genesys_get_address (reg, REG_FMOVDEC);
+ r->value = fast_steps;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/** @brief set up registers related to sensor
+ * Set up the following registers
+ 0x01
+ 0x03
+ 0x10-0x015 R/G/B exposures
+ 0x19 EXPDMY
+ 0x2e BWHI
+ 0x2f BWLO
+ 0x04
+ 0x87
+ 0x05
+ 0x2c,0x2d DPISET
+ 0x30,0x31 STRPIXEL
+ 0x32,0x33 ENDPIXEL
+ 0x35,0x36,0x37 MAXWD [25:2] (>>2)
+ 0x38,0x39 LPERIOD
+ 0x34 DUMMY
+ */
+static SANE_Status
+gl847_init_optical_regs_scan (Genesys_Device * dev,
+ const Genesys_Sensor& sensor,
+ Genesys_Register_Set * reg,
+ unsigned int exposure_time,
+ int used_res,
+ unsigned int start,
+ unsigned int pixels,
+ int channels,
+ int depth,
+ SANE_Bool half_ccd, ColorFilter color_filter, int flags)
+{
+ unsigned int words_per_line;
+ unsigned int startx, endx, used_pixels;
+ unsigned int dpiset, dpihw,segnb,cksel,factor;
+ unsigned int bytes;
+ GenesysRegister *r;
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG(DBG_proc, "%s : exposure_time=%d, used_res=%d, start=%d, pixels=%d, channels=%d, depth=%d, "
+ "half_ccd=%d, flags=%x\n", __func__, exposure_time, used_res, start, pixels, channels, depth,
+ half_ccd, flags);
+
+ /* resolution is divided according to CKSEL */
+ r = sanei_genesys_get_address (reg, REG18);
+ cksel= (r->value & REG18_CKSEL)+1;
+ DBG(DBG_io2, "%s: cksel=%d\n", __func__, cksel);
+
+ /* to manage high resolution device while keeping good
+ * low resolution scanning speed, we make hardware dpi vary */
+ dpihw=sanei_genesys_compute_dpihw(dev, sensor, used_res * cksel);
+ factor=sensor.optical_res/dpihw;
+ DBG(DBG_io2, "%s: dpihw=%d (factor=%d)\n", __func__, dpihw, factor);
+
+ /* sensor parameters */
+ Sensor_Profile* sensor_profile=get_sensor_profile(dev->model->ccd_type, dpihw);
+ gl847_setup_sensor(dev, sensor, reg, dpihw);
+ dpiset = used_res * cksel;
+
+ /* start and end coordinate in optical dpi coordinates */
+ startx = start/cksel+sensor.CCD_start_xoffset;
+ used_pixels=pixels/cksel;
+
+ /* end of sensor window */
+ endx = startx + used_pixels;
+
+ /* sensors are built from 600 dpi segments for LiDE 100/200
+ * and 1200 dpi for the 700F */
+ if (dev->model->flags & GENESYS_FLAG_SIS_SENSOR)
+ {
+ segnb=dpihw/600;
+ }
+ else
+ {
+ segnb=1;
+ }
+
+ /* compute pixel coordinate in the given dpihw space,
+ * taking segments into account */
+ startx/=factor*segnb;
+ endx/=factor*segnb;
+ dev->len=endx-startx;
+ dev->dist=0;
+ dev->skip=0;
+
+ /* in cas of multi-segments sensor, we have to add the witdh
+ * of the sensor crossed by the scan area */
+ if (dev->model->flags & GENESYS_FLAG_SIS_SENSOR && segnb>1)
+ {
+ dev->dist = sensor_profile->segcnt;
+ }
+
+ /* use a segcnt rounded to next even number */
+ endx += ((dev->dist+1)&0xfffe)*(segnb-1);
+ used_pixels=endx-startx;
+
+ status = gl847_set_fe(dev, sensor, AFE_SET);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to set frontend: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* enable shading */
+ r = sanei_genesys_get_address (reg, REG01);
+ r->value &= ~REG01_SCAN;
+ r->value |= REG01_SHDAREA;
+ if ((flags & OPTICAL_FLAG_DISABLE_SHADING) ||
+ (dev->model->flags & GENESYS_FLAG_NO_CALIBRATION))
+ {
+ r->value &= ~REG01_DVDSET;
+ }
+ else
+ {
+ r->value |= REG01_DVDSET;
+ }
+
+ r = sanei_genesys_get_address (reg, REG03);
+ r->value &= ~REG03_AVEENB;
+
+ sanei_genesys_set_lamp_power(dev, sensor, *reg, !(flags & OPTICAL_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, REG04);
+ 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;
+ }
+
+ r->value &= ~(REG04_FILTER | REG04_AFEMOD);
+ if (channels == 1)
+ {
+ switch (color_filter)
+ {
+
+ case ColorFilter::RED:
+ r->value |= 0x14;
+ break;
+ case ColorFilter::BLUE:
+ r->value |= 0x1c;
+ break;
+ case ColorFilter::GREEN:
+ r->value |= 0x18;
+ break;
+ default:
+ break; // should not happen
+ }
+ }
+ else
+ r->value |= 0x10; /* mono */
+
+ /* register 05 */
+ r = sanei_genesys_get_address (reg, REG05);
+
+ /* set up dpihw */
+ r->value &= ~REG05_DPIHW;
+ switch(dpihw)
+ {
+ case 600:
+ r->value |= REG05_DPIHW_600;
+ break;
+ case 1200:
+ r->value |= REG05_DPIHW_1200;
+ break;
+ case 2400:
+ r->value |= REG05_DPIHW_2400;
+ break;
+ case 4800:
+ r->value |= REG05_DPIHW_4800;
+ break;
+ }
+
+ /* enable gamma tables */
+ if (flags & OPTICAL_FLAG_DISABLE_GAMMA)
+ r->value &= ~REG05_GMMENB;
+ else
+ r->value |= REG05_GMMENB;
+
+ /* CIS scanners can do true gray by setting LEDADD */
+ /* we set up LEDADD only when asked */
+ if (dev->model->is_cis == SANE_TRUE)
+ {
+ r = sanei_genesys_get_address (reg, 0x87);
+ r->value &= ~REG87_LEDADD;
+ if (channels == 1 && (flags & OPTICAL_FLAG_ENABLE_LEDADD))
+ {
+ r->value |= REG87_LEDADD;
+ }
+ /* RGB weighting
+ r = sanei_genesys_get_address (reg, 0x01);
+ r->value &= ~REG01_TRUEGRAY;
+ if (channels == 1 && (flags & OPTICAL_FLAG_ENABLE_LEDADD))
+ {
+ r->value |= REG01_TRUEGRAY;
+ }*/
+ }
+
+ /* words(16bit) before gamma, conversion to 8 bit or lineart*/
+ words_per_line = (used_pixels * dpiset) / dpihw;
+ bytes=depth/8;
+ if (depth == 1)
+ {
+ words_per_line = (words_per_line+7)/8 ;
+ dev->len = (dev->len >> 3) + ((dev->len & 7) ? 1 : 0);
+ dev->dist = (dev->dist >> 3) + ((dev->dist & 7) ? 1 : 0);
+ }
+ else
+ {
+ words_per_line *= bytes;
+ dev->dist *= bytes;
+ dev->len *= bytes;
+ }
+
+ dev->bpl = words_per_line;
+ dev->cur=0;
+ dev->segnb=segnb;
+ dev->line_interp = 0;
+
+ sanei_genesys_set_double(reg,REG_DPISET,dpiset);
+ DBG (DBG_io2, "%s: dpiset used=%d\n", __func__, dpiset);
+
+ sanei_genesys_set_double(reg,REG_STRPIXEL,startx);
+ sanei_genesys_set_double(reg,REG_ENDPIXEL,endx);
+ DBG (DBG_io2, "%s: startx=%d\n", __func__, startx);
+ DBG (DBG_io2, "%s: endx =%d\n", __func__, endx);
+
+ DBG (DBG_io2, "%s: used_pixels=%d\n", __func__, used_pixels);
+ DBG (DBG_io2, "%s: pixels =%d\n", __func__, pixels);
+ DBG (DBG_io2, "%s: depth =%d\n", __func__, depth);
+ DBG (DBG_io2, "%s: dev->bpl =%lu\n", __func__, (unsigned long)dev->bpl);
+ DBG (DBG_io2, "%s: dev->len =%lu\n", __func__, (unsigned long)dev->len);
+ DBG (DBG_io2, "%s: dev->dist =%lu\n", __func__, (unsigned long)dev->dist);
+ DBG (DBG_io2, "%s: dev->segnb =%lu\n", __func__, (unsigned long)dev->segnb);
+
+ words_per_line *= channels;
+ dev->wpl = words_per_line;
+
+ dev->oe_buffer.clear();
+ dev->oe_buffer.alloc(dev->wpl);
+
+ /* MAXWD is expressed in 4 words unit */
+ sanei_genesys_set_triple(reg, REG_MAXWD, (words_per_line >> 2));
+ DBG(DBG_io2, "%s: words_per_line used=%d\n", __func__, words_per_line);
+
+ sanei_genesys_set_double(reg, REG_LPERIOD, exposure_time);
+ DBG(DBG_io2, "%s: exposure_time used=%d\n", __func__, exposure_time);
+
+ r = sanei_genesys_get_address (reg, 0x34);
+ r->value = sensor.dummy_pixel;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/* set up registers for an actual scan
+ *
+ * this function sets up the scanner to scan in normal or single line mode
+ */
+static SANE_Status
+gl847_init_scan_regs(Genesys_Device * dev, const Genesys_Sensor& sensor, Genesys_Register_Set * reg,
+ SetupParams& params)
+
+{
+ params.assert_valid();
+
+ int used_res;
+ int start, used_pixels;
+ int bytes_per_line;
+ int move;
+ unsigned int lincnt;
+ unsigned int oflags; /**> optical flags */
+ unsigned int mflags; /**> motor flags */
+ int exposure_time;
+ int stagger;
+
+ int slope_dpi = 0;
+ int dummy = 0;
+ int scan_step_type = 1;
+ int scan_power_mode = 0;
+ int max_shift;
+ size_t requested_buffer_size, read_buffer_size;
+
+ SANE_Bool half_ccd; /* false: full CCD res is used, true, half max CCD res is used */
+ int optical_res;
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG(DBG_info, "%s ", __func__);
+ debug_dump(DBG_info, params);
+
+ /* we may have 2 domains for ccd: xres below or above half ccd max dpi */
+ if (sensor.get_ccd_size_divisor_for_dpi(params.xres) > 1)
+ {
+ half_ccd = SANE_TRUE;
+ }
+ else
+ {
+ half_ccd = SANE_FALSE;
+ }
+
+ /* optical_res */
+ optical_res = sensor.optical_res;
+ if (half_ccd)
+ optical_res /= 2;
+
+ /* stagger */
+ if ((!half_ccd) && (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE))
+ stagger = (4 * params.yres) / dev->motor.base_ydpi;
+ else
+ stagger = 0;
+ DBG(DBG_info, "%s : stagger=%d lines\n", __func__, stagger);
+
+ /* used_res */
+ if (params.flags & SCAN_FLAG_USE_OPTICAL_RES)
+ {
+ used_res = optical_res;
+ }
+ else
+ {
+ /* resolution is choosen from a list */
+ used_res = params.xres;
+ }
+
+ /* compute scan parameters values */
+ /* pixels are allways given at full optical resolution */
+ /* use detected left margin and fixed value */
+ /* start */
+ /* add x coordinates */
+ start = params.startx;
+
+ if (stagger > 0)
+ start |= 1;
+
+ /* compute correct pixels number */
+ /* pixels */
+ used_pixels = (params.pixels * optical_res) / params.xres;
+
+ /* round up pixels number if needed */
+ if (used_pixels * params.xres < params.pixels * optical_res)
+ used_pixels++;
+
+ dummy = 3-params.channels;
+
+/* 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 = params.yres * params.channels;
+ else
+ slope_dpi = params.yres;
+
+ slope_dpi = slope_dpi * (1 + dummy);
+
+ exposure_time = gl847_compute_exposure (dev, used_res);
+ scan_step_type = sanei_genesys_compute_step_type(gl847_motors, dev->model->motor_type, exposure_time);
+
+ DBG(DBG_info, "%s : exposure_time=%d pixels\n", __func__, exposure_time);
+ DBG(DBG_info, "%s : scan_step_type=%d\n", __func__, scan_step_type);
+
+/*** optical parameters ***/
+ /* in case of dynamic lineart, we use an internal 8 bit gray scan
+ * to generate 1 lineart data */
+ if (params.flags & SCAN_FLAG_DYNAMIC_LINEART) {
+ params.depth = 8;
+ }
+
+ /* we enable true gray for cis scanners only, and just when doing
+ * scan since color calibration is OK for this mode
+ */
+ oflags = 0;
+ if(params.flags & SCAN_FLAG_DISABLE_SHADING)
+ oflags |= OPTICAL_FLAG_DISABLE_SHADING;
+ if(params.flags & SCAN_FLAG_DISABLE_GAMMA)
+ oflags |= OPTICAL_FLAG_DISABLE_GAMMA;
+ if(params.flags & SCAN_FLAG_DISABLE_LAMP)
+ oflags |= OPTICAL_FLAG_DISABLE_LAMP;
+
+ if (dev->model->is_cis && dev->settings.true_gray)
+ {
+ oflags |= OPTICAL_FLAG_ENABLE_LEDADD;
+ }
+
+ status = gl847_init_optical_regs_scan (dev, sensor,
+ reg,
+ exposure_time,
+ used_res,
+ start,
+ used_pixels,
+ params.channels,
+ params.depth,
+ half_ccd,
+ params.color_filter,
+ oflags);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+/*** motor parameters ***/
+
+ /* max_shift */
+ max_shift=sanei_genesys_compute_max_shift(dev,params.channels,params.yres,params.flags);
+
+ /* lincnt */
+ lincnt = params.lines + max_shift + stagger;
+
+ /* add tl_y to base movement */
+ move = params.starty;
+ DBG(DBG_info, "%s: move=%d steps\n", __func__, move);
+
+ mflags=0;
+ if(params.flags & SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE)
+ mflags |= MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE;
+ if(params.flags & SCAN_FLAG_FEEDING)
+ mflags |= MOTOR_FLAG_FEED;
+
+ status = gl847_init_motor_regs_scan (dev, sensor,
+ reg,
+ exposure_time,
+ slope_dpi,
+ scan_step_type,
+ dev->model->is_cis ? lincnt *
+ params.channels : lincnt, dummy, move,
+ scan_power_mode,
+ mflags);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+
+ /*** prepares data reordering ***/
+
+/* words_per_line */
+ bytes_per_line = (used_pixels * used_res) / optical_res;
+ bytes_per_line = (bytes_per_line * params.channels * params.depth) / 8;
+
+ requested_buffer_size = 8 * bytes_per_line;
+
+ read_buffer_size =
+ 2 * requested_buffer_size +
+ ((max_shift + stagger) * used_pixels * params.channels * 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 * params.pixels * params.channels * 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->current_setup.params = params;
+ dev->current_setup.pixels = (used_pixels * used_res) / optical_res;
+ dev->current_setup.lines = lincnt;
+ dev->current_setup.depth = params.depth;
+ dev->current_setup.channels = params.channels;
+ dev->current_setup.exposure_time = exposure_time;
+ dev->current_setup.xres = used_res;
+ dev->current_setup.yres = params.yres;
+ dev->current_setup.ccd_size_divisor = half_ccd ? 2 : 1;
+ dev->current_setup.stagger = stagger;
+ dev->current_setup.max_shift = max_shift + stagger;
+
+/* TODO: should this be done elsewhere? */
+ /* scan bytes to send to the frontend */
+ /* theory :
+ target_size =
+ (params.pixels * params.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 (params.depth == 1)
+ dev->total_bytes_to_read =
+ ((params.pixels * params.lines) / 8 +
+ (((params.pixels * params.lines) % 8) ? 1 : 0)) *
+ params.channels;
+ else
+ dev->total_bytes_to_read =
+ params.pixels * params.lines * params.channels * (params.depth / 8);
+
+ DBG(DBG_info, "%s: total bytes to send = %lu\n", __func__, (u_long) dev->total_bytes_to_read);
+/* END TODO */
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static void
+gl847_calculate_current_setup(Genesys_Device * dev, const Genesys_Sensor& sensor)
+{
+ int channels;
+ int depth;
+ int start;
+
+ int used_res;
+ int used_pixels;
+ unsigned int lincnt;
+ int exposure_time;
+ int stagger;
+
+ int slope_dpi = 0;
+ int dummy = 0;
+ int max_shift;
+
+ SANE_Bool half_ccd; /* false: full CCD res is used, true, half max CCD res is used */
+ int optical_res;
+
+ DBG(DBG_info, "%s ", __func__);
+ debug_dump(DBG_info, dev->settings);
+
+ /* channels */
+ if (dev->settings.scan_mode == ScanColorMode::COLOR_SINGLE_PASS)
+ channels = 3;
+ else
+ channels = 1;
+
+ /* depth */
+ depth = dev->settings.depth;
+ if (dev->settings.scan_mode == ScanColorMode::LINEART)
+ depth = 1;
+
+ /* start */
+ start = SANE_UNFIX (dev->model->x_offset);
+ start += dev->settings.tl_x;
+ start = (start * sensor.optical_res) / MM_PER_INCH;
+
+ SetupParams params;
+ params.xres = dev->settings.xres;
+ params.yres = dev->settings.yres;
+ params.startx = start; // not used
+ params.starty = 0; // not used
+ params.pixels = dev->settings.pixels;
+ params.lines = dev->settings.lines;
+ params.depth = depth;
+ params.channels = channels;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = dev->settings.scan_mode;
+ params.color_filter = dev->settings.color_filter;
+ params.flags = 0;
+
+ DBG(DBG_info, "%s ", __func__);
+ debug_dump(DBG_info, params);
+
+/* half_ccd */
+ /* we have 2 domains for ccd: xres below or above half ccd max dpi */
+ if (sensor.get_ccd_size_divisor_for_dpi(params.xres) > 1) {
+ half_ccd = SANE_TRUE;
+ } else {
+ half_ccd = SANE_FALSE;
+ }
+
+ /* optical_res */
+ optical_res = sensor.optical_res;
+
+ /* stagger */
+ if (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE)
+ stagger = (4 * params.yres) / dev->motor.base_ydpi;
+ else
+ stagger = 0;
+ DBG(DBG_info, "%s: stagger=%d lines\n", __func__, stagger);
+
+ /* resolution is choosen from a fixed list */
+ used_res = params.xres;
+
+ /* compute scan parameters values */
+ /* pixels are allways given at half or full CCD optical resolution */
+ /* use detected left margin and fixed value */
+
+ /* compute correct pixels number */
+ used_pixels = (params.pixels * optical_res) / used_res;
+ dummy = 3 - params.channels;
+
+ /* 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 = params.yres * params.channels;
+ } else {
+ slope_dpi = params.yres;
+ }
+
+ slope_dpi = slope_dpi * (1 + dummy);
+
+ exposure_time = gl847_compute_exposure (dev, used_res);
+ DBG(DBG_info, "%s : exposure_time=%d pixels\n", __func__, exposure_time);
+
+ /* max_shift */
+ max_shift = sanei_genesys_compute_max_shift(dev, params.channels, params.yres, 0);
+
+ /* lincnt */
+ lincnt = params.lines + max_shift + stagger;
+
+ dev->current_setup.params = params;
+ dev->current_setup.pixels = (used_pixels * used_res) / optical_res;
+ dev->current_setup.lines = lincnt;
+ dev->current_setup.depth = params.depth;
+ dev->current_setup.channels = params.channels;
+ dev->current_setup.exposure_time = exposure_time;
+ dev->current_setup.xres = used_res;
+ dev->current_setup.yres = params.yres;
+ dev->current_setup.ccd_size_divisor = half_ccd ? 2 : 1;
+ dev->current_setup.stagger = stagger;
+ dev->current_setup.max_shift = max_shift + stagger;
+
+ DBGCOMPLETED;
+}
+
+/*for fast power saving methods only, like disabling certain amplifiers*/
+static SANE_Status
+gl847_save_power (Genesys_Device * dev, SANE_Bool enable)
+{
+ DBG(DBG_proc, "%s: enable = %d\n", __func__, enable);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl847_set_powersaving (Genesys_Device * dev, int delay /* in minutes */ )
+{
+ DBG(DBG_proc, "%s (delay = %d)\n", __func__, delay);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl847_start_action (Genesys_Device * dev)
+{
+ return sanei_genesys_write_register (dev, 0x0f, 0x01);
+}
+
+static SANE_Status
+gl847_stop_action (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val40, val;
+ unsigned int loop;
+
+ DBGSTART;
+
+ /* post scan gpio : without that HOMSNR is unreliable */
+ gl847_homsnr_gpio(dev);
+ status = sanei_genesys_get_status (dev, &val);
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ status = sanei_genesys_read_register (dev, REG40, &val40);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__, sane_strstatus(status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* only stop action if needed */
+ if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG))
+ {
+ DBG(DBG_info, "%s: already stopped\n", __func__);
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ /* ends scan */
+ val = dev->reg.get8(REG01);
+ val &= ~REG01_SCAN;
+ sanei_genesys_set_reg_from_set(&dev->reg, REG01, val);
+ status = sanei_genesys_write_register (dev, REG01, val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to write register 01: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+ sanei_genesys_sleep_ms(100);
+
+ loop = 10;
+ while (loop > 0)
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+ status = sanei_genesys_read_register (dev, REG40, &val40);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__, sane_strstatus(status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* if scanner is in command mode, we are done */
+ if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG)
+ && !(val & REG41_MOTORENB))
+ {
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ sanei_genesys_sleep_ms(100);
+ loop--;
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_IO_ERROR;
+}
+
+/* Send the low-level scan command */
+static SANE_Status
+gl847_begin_scan (Genesys_Device * dev, const Genesys_Sensor& sensor, Genesys_Register_Set * reg,
+ SANE_Bool start_motor)
+{
+ (void) sensor;
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+ GenesysRegister *r;
+
+ DBGSTART;
+
+ /* clear GPIO 10 */
+ if (dev->model->gpo_type != GPO_CANONLIDE700)
+ {
+ RIE (sanei_genesys_read_register (dev, REG6C, &val));
+ val &= ~REG6C_GPIO10;
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+ }
+
+ val = REG0D_CLRLNCNT;
+ RIE (sanei_genesys_write_register (dev, REG0D, val));
+ val = REG0D_CLRMCNT;
+ RIE (sanei_genesys_write_register (dev, REG0D, val));
+
+ RIE (sanei_genesys_read_register (dev, REG01, &val));
+ val |= REG01_SCAN;
+ RIE (sanei_genesys_write_register (dev, REG01, val));
+ r = sanei_genesys_get_address (reg, REG01);
+ r->value = val;
+
+ if (start_motor)
+ {
+ RIE (sanei_genesys_write_register (dev, REG0F, 1));
+ }
+ else
+ {
+ RIE (sanei_genesys_write_register (dev, REG0F, 0));
+ }
+
+ DBGCOMPLETED;
+
+ return status;
+}
+
+
+/* Send the stop scan command */
+static SANE_Status
+gl847_end_scan (Genesys_Device * dev, Genesys_Register_Set * reg,
+ SANE_Bool check_stop)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG(DBG_proc, "%s (check_stop = %d)\n", __func__, check_stop);
+ if (reg == NULL)
+ return SANE_STATUS_INVAL;
+
+ if (dev->model->is_sheetfed == SANE_TRUE)
+ {
+ status = SANE_STATUS_GOOD;
+ }
+ else /* flat bed scanners */
+ {
+ status = gl847_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to stop: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/** rewind scan
+ * Move back by the same amount of distance than previous scan.
+ * @param dev device to rewind
+ * @returns SANE_STATUS_GOOD on success
+ */
+#if 0 /* disabled to fix #7 */
+static
+SANE_Status gl847_rewind(Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t byte;
+
+ DBGSTART;
+
+ /* set motor reverse */
+ RIE (sanei_genesys_read_register (dev, 0x02, &byte));
+ byte |= 0x04;
+ RIE (sanei_genesys_write_register(dev, 0x02, byte));
+
+ /* and start scan, then wait completion */
+ RIE (gl847_begin_scan (dev, dev->reg, SANE_TRUE));
+ do
+ {
+ sanei_genesys_sleep_ms(100);
+ RIE (sanei_genesys_read_register (dev, REG40, &byte));
+ }
+ while(byte & REG40_MOTMFLG);
+ RIE (gl847_end_scan (dev, dev->reg, SANE_TRUE));
+
+ /* restore direction */
+ RIE (sanei_genesys_read_register (dev, 0x02, &byte));
+ byte &= 0xfb;
+ RIE (sanei_genesys_write_register(dev, 0x02, byte));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+#endif
+
+/** Park head
+ * Moves the slider to the home (top) position slowly
+ * @param dev device to park
+ * @param wait_until_home true to make the function waiting for head
+ * to be home before returning, if fals returne immediately
+ * @returns SANE_STATUS_GOO on success */
+static
+SANE_Status
+gl847_slow_back_home (Genesys_Device * dev, SANE_Bool wait_until_home)
+{
+ Genesys_Register_Set local_reg;
+ SANE_Status status = SANE_STATUS_GOOD;
+ GenesysRegister *r;
+ float resolution;
+ uint8_t val;
+ int loop = 0;
+ ScanColorMode scan_mode;
+
+ DBG(DBG_proc, "%s (wait_until_home = %d)\n", __func__, wait_until_home);
+
+ /* post scan gpio : without that HOMSNR is unreliable */
+ gl847_homsnr_gpio(dev);
+
+ /* first read gives HOME_SENSOR true */
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+ sanei_genesys_sleep_ms(100);
+
+ /* second is reliable */
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ /* is sensor at home? */
+ if (val & HOMESNR)
+ {
+ DBG(DBG_info, "%s: already at home, completed\n", __func__);
+ dev->scanhead_position_in_steps = 0;
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ local_reg = dev->reg;
+
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+
+ const auto& sensor = sanei_genesys_find_sensor_any(dev);
+
+ /* TODO add scan_mode to the API */
+ scan_mode = dev->settings.scan_mode;
+ dev->settings.scan_mode = ScanColorMode::LINEART;
+
+ SetupParams params;
+ params.xres = resolution;
+ params.yres = resolution;
+ params.startx = 100;
+ params.starty = 30000;
+ params.pixels = 100;
+ params.lines = 100;
+ params.depth = 8;
+ params.channels = 1;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = ScanColorMode::GRAY;
+ params.color_filter = ColorFilter::RED;
+ params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ status = gl847_init_scan_regs(dev, sensor, &local_reg, params);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to set up registers: %s\n", __func__, sane_strstatus(status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ dev->settings.scan_mode = scan_mode;
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT | REG0D_CLRMCNT));
+
+ /* set up for reverse */
+ r = sanei_genesys_get_address (&local_reg, REG02);
+ r->value |= REG02_MTRREV;
+
+ RIE (dev->model->cmd_set->bulk_write_register(dev, local_reg));
+
+ try {
+ status = gl847_start_action (dev);
+ } catch (...) {
+ DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status));
+ try {
+ gl847_stop_action(dev);
+ } catch (...) {}
+ try {
+ // restore original registers
+ dev->model->cmd_set->bulk_write_register(dev, dev->reg);
+ } catch (...) {}
+ throw;
+ }
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status));
+ gl847_stop_action (dev);
+ /* send original registers */
+ dev->model->cmd_set->bulk_write_register(dev, dev->reg);
+ return status;
+ }
+
+ /* post scan gpio : without that HOMSNR is unreliable */
+ gl847_homsnr_gpio(dev);
+
+ if (wait_until_home)
+ {
+ while (loop < 300) /* do not wait longer then 30 seconds */
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__,
+ sane_strstatus(status));
+ return status;
+ }
+
+ if (val & HOMESNR) /* home sensor */
+ {
+ DBG(DBG_info, "%s: reached home position\n", __func__);
+ gl847_stop_action (dev);
+ dev->scanhead_position_in_steps = 0;
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+ 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 */
+ gl847_stop_action (dev);
+ DBG(DBG_error, "%s: timeout while waiting for scanhead to go home\n", __func__);
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ DBG(DBG_info, "%s: scanhead is still moving\n", __func__);
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/* Automatically set top-left edge of the scan area by scanning a 200x200 pixels
+ area at 600 dpi from very top of scanner */
+static SANE_Status
+gl847_search_start_position (Genesys_Device * dev)
+{
+ int size;
+ SANE_Status status = SANE_STATUS_GOOD;
+ Genesys_Register_Set local_reg;
+ int steps;
+
+ int pixels = 600;
+ int dpi = 300;
+
+ DBG(DBG_proc, "%s\n", __func__);
+
+ 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.
+ auto& sensor = sanei_genesys_find_sensor_for_write(dev, dpi);
+
+ SetupParams params;
+ params.xres = dpi;
+ params.yres = dpi;
+ params.startx = 0;
+ params.starty = 0; /*we should give a small offset here~60 steps */
+ params.pixels = 600;
+ params.lines = dev->model->search_lines;
+ params.depth = 8;
+ params.channels = 1;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = ScanColorMode::GRAY;
+ params.color_filter = ColorFilter::GREEN;
+ params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ status = gl847_init_scan_regs(dev, sensor, &local_reg, params);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to set up registers: %s\n", __func__, sane_strstatus(status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* send to scanner */
+ status = dev->model->cmd_set->bulk_write_register(dev, local_reg);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to bulk write registers: %s\n", __func__, sane_strstatus(status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ size = pixels * dev->model->search_lines;
+
+ std::vector<uint8_t> data(size);
+
+ status = gl847_begin_scan(dev, sensor, &local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to begin scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* waits for valid data */
+ do
+ sanei_genesys_test_buffer_empty (dev, &steps);
+ while (steps);
+
+ /* now we're on target, we can read data */
+ status = sanei_genesys_read_data_from_scanner(dev, data.data(), size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to read data: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file("gl847_search_position.pnm", data.data(), 8, 1, pixels,
+ dev->model->search_lines);
+
+ status = gl847_end_scan(dev, &local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to end scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* update regs to copy ASIC internal state */
+ dev->reg = local_reg;
+
+/*TODO: find out where sanei_genesys_search_reference_point
+ stores information, and use that correctly*/
+ status =
+ sanei_genesys_search_reference_point(dev, sensor, data.data(), 0, dpi, pixels,
+ dev->model->search_lines);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to set search reference point: %s\n", __func__,
+ sane_strstatus(status));
+ return status;
+ }
+
+ return SANE_STATUS_GOOD;
+}
+
+/*
+ * sets up register for coarse gain calibration
+ * todo: check it for scanners using it */
+static SANE_Status
+gl847_init_regs_for_coarse_calibration(Genesys_Device * dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set& regs)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t channels;
+ uint8_t cksel;
+
+ DBG(DBG_proc, "%s\n", __func__);
+
+
+ cksel = (regs.find_reg(0x18).value & REG18_CKSEL) + 1; /* clock speed = 1..4 clocks */
+
+ /* set line size */
+ if (dev->settings.scan_mode == ScanColorMode::COLOR_SINGLE_PASS)
+ channels = 3;
+ else {
+ channels = 1;
+ }
+
+ SetupParams params;
+ params.xres = dev->settings.xres;
+ params.yres = dev->settings.yres;
+ params.startx = 0;
+ params.starty = 0;
+ params.pixels = sensor.optical_res / cksel;
+ params.lines = 20;
+ params.depth = 16;
+ params.channels = channels;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = dev->settings.scan_mode;
+ params.color_filter = dev->settings.color_filter;
+ params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ status = gl847_init_scan_regs(dev, sensor, &regs, params);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: Failed to setup scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ DBG(DBG_info, "%s: optical sensor res: %d dpi, actual res: %d\n", __func__,
+ sensor.optical_res / cksel, dev->settings.xres);
+
+ status =
+ dev->model->cmd_set->bulk_write_register(dev, regs);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: Failed to bulk write registers: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief moves the slider to steps at motor base dpi
+ * @param dev device to work on
+ * @param steps number of steps to move in base_dpi line count
+ * */
+static SANE_Status
+gl847_feed (Genesys_Device * dev, unsigned int steps)
+{
+ Genesys_Register_Set local_reg;
+ SANE_Status status = SANE_STATUS_GOOD;
+ GenesysRegister *r;
+ float resolution;
+ uint8_t val;
+
+ DBGSTART;
+ DBG(DBG_io, "%s: steps=%d\n", __func__, steps);
+
+ local_reg = dev->reg;
+
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+ const auto& sensor = sanei_genesys_find_sensor(dev, resolution);
+
+ SetupParams params;
+ params.xres = resolution;
+ params.yres = resolution;
+ params.startx = 0;
+ params.starty = steps;
+ params.pixels = 100;
+ params.lines = 3;
+ params.depth = 8;
+ params.channels = 3;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ params.color_filter = dev->settings.color_filter;
+ params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_FEEDING |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ status = gl847_init_scan_regs(dev, sensor, &local_reg, params);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to set up registers: %s\n", __func__, sane_strstatus(status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* set exposure to zero */
+ sanei_genesys_set_triple(&local_reg,REG_EXPR,0);
+ sanei_genesys_set_triple(&local_reg,REG_EXPG,0);
+ sanei_genesys_set_triple(&local_reg,REG_EXPB,0);
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT));
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRMCNT));
+
+ /* set up for no scan */
+ r = sanei_genesys_get_address(&local_reg, REG01);
+ r->value &= ~REG01_SCAN;
+
+ /* send registers */
+ RIE (dev->model->cmd_set->bulk_write_register(dev, local_reg));
+
+ try {
+ status = gl847_start_action (dev);
+ } catch (...) {
+ DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status));
+ try {
+ gl847_stop_action(dev);
+ } catch (...) {}
+ try {
+ // restore original registers
+ dev->model->cmd_set->bulk_write_register(dev, dev->reg);
+ } catch (...) {}
+ throw;
+ }
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status));
+ gl847_stop_action (dev);
+
+ /* restore original registers */
+ dev->model->cmd_set->bulk_write_register(dev, dev->reg);
+ return status;
+ }
+
+ /* wait until feed count reaches the required value, but do not
+ * exceed 30s */
+ do
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ }
+ while (status == SANE_STATUS_GOOD && !(val & FEEDFSH));
+
+ /* then stop scanning */
+ RIE(gl847_stop_action (dev));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/* init registers for shading calibration */
+static SANE_Status
+gl847_init_regs_for_shading(Genesys_Device * dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set& regs)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ float move;
+
+ DBGSTART;
+ dev->calib_channels = 3;
+
+ /* initial calibration reg values */
+ regs = dev->reg;
+
+ dev->calib_resolution = sanei_genesys_compute_dpihw(dev, sensor, dev->settings.xres);
+ dev->calib_total_bytes_to_read = 0;
+ dev->calib_lines = dev->model->shading_lines;
+ if(dev->calib_resolution==4800)
+ dev->calib_lines *= 2;
+ dev->calib_pixels = (sensor.sensor_pixels*dev->calib_resolution)/sensor.optical_res;
+ DBG(DBG_io, "%s: calib_lines = %d\n", __func__, (int)dev->calib_lines);
+ DBG(DBG_io, "%s: calib_pixels = %d\n", __func__, (int)dev->calib_pixels);
+
+ /* this is aworkaround insufficent distance for slope
+ * motor acceleration TODO special motor slope for shading */
+ move=1;
+ if(dev->calib_resolution<1200)
+ {
+ move=40;
+ }
+
+ SetupParams params;
+ params.xres = dev->calib_resolution;
+ params.yres = dev->calib_resolution;
+ params.startx = 0;
+ params.starty = move;
+ params.pixels = dev->calib_pixels;
+ params.lines = dev->calib_lines;
+ params.depth = 16;
+ params.channels = dev->calib_channels;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ params.color_filter = dev->settings.color_filter;
+ params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ status = gl847_init_scan_regs(dev, sensor, &regs, params);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ status = dev->model->cmd_set->bulk_write_register(dev, regs);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to bulk write registers: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* we use GENESYS_FLAG_SHADING_REPARK */
+ dev->scanhead_position_in_steps = 0;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief set up registers for the actual scan
+ */
+static SANE_Status
+gl847_init_regs_for_scan (Genesys_Device * dev, const Genesys_Sensor& sensor)
+{
+ int channels;
+ int flags;
+ int depth;
+ float move;
+ int move_dpi;
+ float start;
+
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG(DBG_info, "%s ", __func__);
+ debug_dump(DBG_info, dev->settings);
+
+ /* channels */
+ if (dev->settings.scan_mode == ScanColorMode::COLOR_SINGLE_PASS)
+ channels = 3;
+ else
+ channels = 1;
+
+ /* depth */
+ depth = dev->settings.depth;
+ if (dev->settings.scan_mode == ScanColorMode::LINEART)
+ depth = 1;
+
+
+ /* 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 = SANE_UNFIX (dev->model->y_offset);
+ move += dev->settings.tl_y;
+ move = (move * move_dpi) / MM_PER_INCH;
+ move -= dev->scanhead_position_in_steps;
+ DBG(DBG_info, "%s: move=%f steps\n", __func__, move);
+
+ /* fast move to scan area */
+ /* we don't move fast the whole distance since it would involve
+ * computing acceleration/deceleration distance for scan
+ * resolution. So leave a remainder for it so scan makes the final
+ * move tuning */
+ if(channels*dev->settings.yres>=600 && move>700)
+ {
+ status = gl847_feed (dev, move-500);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to move to scan area\n", __func__);
+ return status;
+ }
+ move=500;
+ }
+
+ DBG(DBG_info, "%s: move=%f steps\n", __func__, move);
+ DBG(DBG_info, "%s: move=%f steps\n", __func__, move);
+
+ /* start */
+ start = SANE_UNFIX (dev->model->x_offset);
+ start += dev->settings.tl_x;
+ start = (start * sensor.optical_res) / MM_PER_INCH;
+
+ flags = 0;
+
+ /* emulated lineart from gray data is required for now */
+ if(dev->settings.scan_mode == ScanColorMode::LINEART
+ && dev->settings.dynamic_lineart)
+ {
+ flags |= SCAN_FLAG_DYNAMIC_LINEART;
+ }
+
+ /* backtracking isn't handled well, so don't enable it */
+ flags |= SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE;
+
+ SetupParams params;
+ params.xres = dev->settings.xres;
+ params.yres = dev->settings.yres;
+ params.startx = start;
+ params.starty = move;
+ params.pixels = dev->settings.pixels;
+ params.lines = dev->settings.lines;
+ params.depth = depth;
+ params.channels = channels;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = dev->settings.scan_mode;
+ params.color_filter = dev->settings.color_filter;
+ params.flags = flags;
+
+ status = gl847_init_scan_regs(dev, sensor, &dev->reg, params);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/**
+ * Send shading calibration data. The buffer is considered to always hold values
+ * for all the channels.
+ */
+static SANE_Status
+gl847_send_shading_data (Genesys_Device * dev, const Genesys_Sensor& sensor,
+ uint8_t * data, int size)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint32_t addr, length, i, x, factor, pixels;
+ uint32_t dpiset, dpihw, strpixel, endpixel;
+ uint16_t tempo;
+ uint32_t lines, channels;
+ uint8_t val,*ptr,*src;
+
+ DBGSTART;
+ DBG(DBG_io2, "%s: writing %d bytes of shading data\n", __func__, size);
+
+ /* shading data is plit in 3 (up to 5 with IR) areas
+ write(0x10014000,0x00000dd8)
+ URB 23429 bulk_out len 3544 wrote 0x33 0x10 0x....
+ write(0x1003e000,0x00000dd8)
+ write(0x10068000,0x00000dd8)
+ */
+ length = (uint32_t) (size / 3);
+ sanei_genesys_get_double(&dev->reg,REG_STRPIXEL,&tempo);
+ strpixel=tempo;
+ sanei_genesys_get_double(&dev->reg,REG_ENDPIXEL,&tempo);
+ endpixel=tempo;
+
+ /* compute deletion factor */
+ sanei_genesys_get_double(&dev->reg,REG_DPISET,&tempo);
+ dpiset=tempo;
+ DBG(DBG_io2, "%s: STRPIXEL=%d, ENDPIXEL=%d, PIXELS=%d, DPISET=%d\n", __func__, strpixel, endpixel,
+ endpixel-strpixel, dpiset);
+ dpihw=sanei_genesys_compute_dpihw(dev, sensor, dpiset);
+ factor=dpihw/dpiset;
+ DBG(DBG_io2, "%s: factor=%d\n", __func__, factor);
+
+ if(DBG_LEVEL>=DBG_data)
+ {
+ dev->binary=fopen("binary.pnm","wb");
+ sanei_genesys_get_triple(&dev->reg, REG_LINCNT, &lines);
+ channels=dev->current_setup.channels;
+ if(dev->binary!=NULL)
+ {
+ fprintf(dev->binary,"P5\n%d %d\n%d\n",(endpixel-strpixel)/factor*channels,lines/channels,255);
+ }
+ }
+
+ pixels=endpixel-strpixel;
+
+ /* since we're using SHDAREA, substract startx coordinate from shading */
+ strpixel-=((sensor.CCD_start_xoffset*600)/sensor.optical_res);
+
+ /* turn pixel value into bytes 2x16 bits words */
+ strpixel*=2*2;
+ pixels*=2*2;
+
+ std::vector<uint8_t> buffer(pixels, 0);
+
+ DBG(DBG_io2, "%s: using chunks of %d (0x%04x) bytes\n", __func__, pixels, pixels);
+
+ /* base addr of data has been written in reg D0-D4 in 4K word, so AHB address
+ * is 8192*reg value */
+
+ /* write actual color channel data */
+ for(i=0;i<3;i++)
+ {
+ /* build up actual shading data by copying the part from the full width one
+ * to the one corresponding to SHDAREA */
+ ptr = buffer.data();
+
+ /* iterate on both sensor segment */
+ for(x=0;x<pixels;x+=4*factor)
+ {
+ /* coefficient source */
+ src=(data+strpixel+i*length)+x;
+
+ /* coefficient copy */
+ ptr[0]=src[0];
+ ptr[1]=src[1];
+ ptr[2]=src[2];
+ ptr[3]=src[3];
+
+ /* next shading coefficient */
+ ptr+=4;
+ }
+
+ RIE (sanei_genesys_read_register (dev, 0xd0+i, &val));
+ addr = val * 8192 + 0x10000000;
+ status = sanei_genesys_write_ahb(dev, addr, pixels, buffer.data());
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s; write to AHB failed (%s)\n", __func__, sane_strstatus(status));
+ return status;
+ }
+ }
+
+ DBGCOMPLETED;
+
+ return status;
+}
+
+/** @brief calibrates led exposure
+ * Calibrate exposure by scanning a white area until the used exposure gives
+ * data white enough.
+ * @param dev device to calibrate
+ */
+static SANE_Status
+gl847_led_calibration (Genesys_Device * dev, Genesys_Sensor& sensor, Genesys_Register_Set& regs)
+{
+ int num_pixels;
+ int total_size;
+ int used_res;
+ int i, j;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int val;
+ int channels, depth;
+ int avg[3], top[3], bottom[3];
+ int turn;
+ uint16_t exp[3];
+ float move;
+ SANE_Bool acceptable;
+
+ DBGSTART;
+
+ move = SANE_UNFIX (dev->model->y_offset_calib);
+ move = (move * (dev->motor.base_ydpi/4)) / MM_PER_INCH;
+ if(move>20)
+ {
+ RIE(gl847_feed (dev, move));
+ }
+ DBG(DBG_io, "%s: move=%f steps\n", __func__, move);
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+ depth=16;
+ used_res=sanei_genesys_compute_dpihw(dev, sensor, dev->settings.xres);
+ Sensor_Profile* sensor_profile=get_sensor_profile(dev->model->ccd_type, used_res);
+ num_pixels = (sensor.sensor_pixels*used_res)/sensor.optical_res;
+
+ /* initial calibration reg values */
+ regs = dev->reg;
+
+ SetupParams params;
+ params.xres = used_res;
+ params.yres = used_res;
+ params.startx = 0;
+ params.starty = 0;
+ params.pixels = num_pixels;
+ params.lines = 1;
+ params.depth = depth;
+ params.channels = channels;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ params.color_filter = dev->settings.color_filter;
+ params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ status = gl847_init_scan_regs(dev, sensor, &regs, params);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ total_size = num_pixels * channels * (depth/8) * 1; /* colors * bytes_per_color * scan lines */
+ std::vector<uint8_t> line(total_size);
+
+ /* initial loop values and boundaries */
+ exp[0]=sensor_profile->expr;
+ exp[1]=sensor_profile->expg;
+ exp[2]=sensor_profile->expb;
+
+ bottom[0]=29000;
+ bottom[1]=29000;
+ bottom[2]=29000;
+
+ top[0]=41000;
+ top[1]=51000;
+ top[2]=51000;
+
+ turn = 0;
+
+ /* no move during led calibration */
+ sanei_genesys_set_motor_power(regs, false);
+ do
+ {
+ /* set up exposure */
+ sanei_genesys_set_double(&regs,REG_EXPR,exp[0]);
+ sanei_genesys_set_double(&regs,REG_EXPG,exp[1]);
+ sanei_genesys_set_double(&regs,REG_EXPB,exp[2]);
+
+ /* write registers and scan data */
+ RIE(dev->model->cmd_set->bulk_write_register(dev, regs));
+
+ DBG(DBG_info, "%s: starting line reading\n", __func__);
+ RIE(gl847_begin_scan(dev, sensor, &regs, SANE_TRUE));
+ RIE(sanei_genesys_read_data_from_scanner(dev, line.data(), total_size));
+
+ /* stop scanning */
+ RIE(gl847_stop_action (dev));
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ char fn[30];
+ snprintf(fn, 30, "gl847_led_%02d.pnm", turn);
+ sanei_genesys_write_pnm_file(fn, line.data(), depth, 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]);
+
+ /* check if exposure gives average within the boundaries */
+ acceptable = SANE_TRUE;
+ for(i=0;i<3;i++)
+ {
+ if(avg[i]<bottom[i])
+ {
+ exp[i]=(exp[i]*bottom[i])/avg[i];
+ acceptable = SANE_FALSE;
+ }
+ if(avg[i]>top[i])
+ {
+ exp[i]=(exp[i]*top[i])/avg[i];
+ acceptable = SANE_FALSE;
+ }
+ }
+
+ turn++;
+ }
+ while (!acceptable && turn < 100);
+
+ DBG(DBG_info, "%s: acceptable exposure: %d,%d,%d\n", __func__, exp[0], exp[1], exp[2]);
+
+ /* set these values as final ones for scan */
+ sanei_genesys_set_double(&dev->reg,REG_EXPR,exp[0]);
+ sanei_genesys_set_double(&dev->reg,REG_EXPG,exp[1]);
+ sanei_genesys_set_double(&dev->reg,REG_EXPB,exp[2]);
+
+ /* store in this struct since it is the one used by cache calibration */
+ sensor.exposure.red = exp[0];
+ sensor.exposure.green = exp[1];
+ sensor.exposure.blue = exp[2];
+
+ /* go back home */
+ if(move>20)
+ {
+ status=gl847_slow_back_home (dev, SANE_TRUE);
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/**
+ * set up GPIO/GPOE for idle state
+ */
+static SANE_Status
+gl847_init_gpio (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int idx=0;
+
+ DBGSTART;
+
+ /* search GPIO profile */
+ while(gpios[idx].sensor_id!=0 && dev->model->gpo_type!=gpios[idx].sensor_id)
+ {
+ idx++;
+ }
+ if(gpios[idx].sensor_id==0)
+ {
+ DBG(DBG_error, "%s: failed to find GPIO profile for sensor_id=%d\n", __func__,
+ dev->model->ccd_type);
+ return SANE_STATUS_INVAL;
+ }
+
+ RIE (sanei_genesys_write_register (dev, REGA7, gpios[idx].ra7));
+ RIE (sanei_genesys_write_register (dev, REGA6, gpios[idx].ra6));
+
+ RIE (sanei_genesys_write_register (dev, REG6E, gpios[idx].r6e));
+ RIE (sanei_genesys_write_register (dev, REG6C, 0x00));
+
+ RIE (sanei_genesys_write_register (dev, REG6B, gpios[idx].r6b));
+ RIE (sanei_genesys_write_register (dev, REG6C, gpios[idx].r6c));
+ RIE (sanei_genesys_write_register (dev, REG6D, gpios[idx].r6d));
+ RIE (sanei_genesys_write_register (dev, REG6E, gpios[idx].r6e));
+ RIE (sanei_genesys_write_register (dev, REG6F, gpios[idx].r6f));
+
+ RIE (sanei_genesys_write_register (dev, REGA8, gpios[idx].ra8));
+ RIE (sanei_genesys_write_register (dev, REGA9, gpios[idx].ra9));
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/**
+ * set memory layout by filling values in dedicated registers
+ */
+static SANE_Status
+gl847_init_memory_layout (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int idx = 0;
+ uint8_t val;
+
+ DBG(DBG_proc, "%s\n" , __func__);
+
+ /* point to per model memory layout */
+ idx = 0;
+ if (dev->model->model_id == MODEL_CANON_LIDE_100)
+ {
+ idx = 0;
+ }
+ if (dev->model->model_id == MODEL_CANON_LIDE_200)
+ {
+ idx = 1;
+ }
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_5600F)
+ {
+ idx = 2;
+ }
+ if (dev->model->model_id == MODEL_CANON_LIDE_700F)
+ {
+ idx = 3;
+ }
+
+ /* CLKSET nd DRAMSEL */
+ val = layouts[idx].dramsel;
+ RIE (sanei_genesys_write_register (dev, REG0B, val));
+ dev->reg.find_reg(0x0b).value = val;
+
+ /* prevent further writings by bulk write register */
+ dev->reg.remove_reg(0x0b);
+
+ /* setup base address for shading data. */
+ /* values must be multiplied by 8192=0x4000 to give address on AHB */
+ /* R-Channel shading bank0 address setting for CIS */
+ sanei_genesys_write_register (dev, 0xd0, layouts[idx].rd0);
+ /* G-Channel shading bank0 address setting for CIS */
+ sanei_genesys_write_register (dev, 0xd1, layouts[idx].rd1);
+ /* B-Channel shading bank0 address setting for CIS */
+ sanei_genesys_write_register (dev, 0xd2, layouts[idx].rd2);
+
+ /* setup base address for scanned data. */
+ /* values must be multiplied by 1024*2=0x0800 to give address on AHB */
+ /* R-Channel ODD image buffer 0x0124->0x92000 */
+ /* size for each buffer is 0x16d*1k word */
+ sanei_genesys_write_register (dev, 0xe0, layouts[idx].re0);
+ sanei_genesys_write_register (dev, 0xe1, layouts[idx].re1);
+ /* R-Channel ODD image buffer end-address 0x0291->0x148800 => size=0xB6800*/
+ sanei_genesys_write_register (dev, 0xe2, layouts[idx].re2);
+ sanei_genesys_write_register (dev, 0xe3, layouts[idx].re3);
+
+ /* R-Channel EVEN image buffer 0x0292 */
+ sanei_genesys_write_register (dev, 0xe4, layouts[idx].re4);
+ sanei_genesys_write_register (dev, 0xe5, layouts[idx].re5);
+ /* R-Channel EVEN image buffer end-address 0x03ff*/
+ sanei_genesys_write_register (dev, 0xe6, layouts[idx].re6);
+ sanei_genesys_write_register (dev, 0xe7, layouts[idx].re7);
+
+ /* same for green, since CIS, same addresses */
+ sanei_genesys_write_register (dev, 0xe8, layouts[idx].re0);
+ sanei_genesys_write_register (dev, 0xe9, layouts[idx].re1);
+ sanei_genesys_write_register (dev, 0xea, layouts[idx].re2);
+ sanei_genesys_write_register (dev, 0xeb, layouts[idx].re3);
+ sanei_genesys_write_register (dev, 0xec, layouts[idx].re4);
+ sanei_genesys_write_register (dev, 0xed, layouts[idx].re5);
+ sanei_genesys_write_register (dev, 0xee, layouts[idx].re6);
+ sanei_genesys_write_register (dev, 0xef, layouts[idx].re7);
+
+/* same for blue, since CIS, same addresses */
+ sanei_genesys_write_register (dev, 0xf0, layouts[idx].re0);
+ sanei_genesys_write_register (dev, 0xf1, layouts[idx].re1);
+ sanei_genesys_write_register (dev, 0xf2, layouts[idx].re2);
+ sanei_genesys_write_register (dev, 0xf3, layouts[idx].re3);
+ sanei_genesys_write_register (dev, 0xf4, layouts[idx].re4);
+ sanei_genesys_write_register (dev, 0xf5, layouts[idx].re5);
+ sanei_genesys_write_register (dev, 0xf6, layouts[idx].re6);
+ sanei_genesys_write_register (dev, 0xf7, layouts[idx].re7);
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/* *
+ * initialize ASIC from power on condition
+ */
+static SANE_Status
+gl847_boot (Genesys_Device * dev, SANE_Bool cold)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+
+ DBGSTART;
+
+ /* reset ASIC if cold boot */
+ if(cold)
+ {
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x01));
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x00));
+ }
+
+ /* test CHKVER */
+ RIE (sanei_genesys_read_register (dev, REG40, &val));
+ if (val & REG40_CHKVER)
+ {
+ RIE (sanei_genesys_read_register (dev, 0x00, &val));
+ DBG(DBG_info, "%s: reported version for genesys chip is 0x%02x\n", __func__, val);
+ }
+
+ /* Set default values for registers */
+ gl847_init_registers (dev);
+
+ /* Write initial registers */
+ RIE (dev->model->cmd_set->bulk_write_register(dev, dev->reg));
+
+ /* Enable DRAM by setting a rising edge on bit 3 of reg 0x0b */
+ val = dev->reg.find_reg(0x0b).value & REG0B_DRAMSEL;
+ val = (val | REG0B_ENBDRAM);
+ RIE (sanei_genesys_write_register (dev, REG0B, val));
+ dev->reg.find_reg(0x0b).value = val;
+
+ /* CIS_LINE */
+ SETREG (0x08, REG08_CIS_LINE);
+ RIE (sanei_genesys_write_register (dev, 0x08, dev->reg.find_reg(0x08).value));
+
+ /* set up end access */
+ RIE (sanei_genesys_write_0x8c (dev, 0x10, 0x0b));
+ RIE (sanei_genesys_write_0x8c (dev, 0x13, 0x0e));
+
+ /* setup gpio */
+ RIE (gl847_init_gpio (dev));
+
+ /* setup internal memory layout */
+ RIE (gl847_init_memory_layout (dev));
+
+ SETREG (0xf8, 0x01);
+ RIE (sanei_genesys_write_register (dev, 0xf8, dev->reg.find_reg(0xf8).value));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * initialize backend and ASIC : registers, motor tables, and gamma tables
+ * then ensure scanner's head is at home
+ */
+static SANE_Status gl847_init (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG_INIT ();
+ DBGSTART;
+
+ status=sanei_genesys_asic_init(dev, 0);
+
+ DBGCOMPLETED;
+ return status;
+}
+
+static SANE_Status
+gl847_update_hardware_sensors (Genesys_Scanner * s)
+{
+ /* do what is needed to get a new set of events, but try to not lose
+ any of them.
+ */
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+ uint8_t scan, file, email, copy;
+ switch(s->dev->model->gpo_type)
+ {
+ case GPO_CANONLIDE700:
+ scan=0x04;
+ file=0x02;
+ email=0x01;
+ copy=0x08;
+ break;
+ default:
+ scan=0x01;
+ file=0x02;
+ email=0x04;
+ copy=0x08;
+ }
+ RIE (sanei_genesys_read_register (s->dev, REG6D, &val));
+
+ s->buttons[BUTTON_SCAN_SW].write((val & scan) == 0);
+ s->buttons[BUTTON_FILE_SW].write((val & file) == 0);
+ s->buttons[BUTTON_EMAIL_SW].write((val & email) == 0);
+ s->buttons[BUTTON_COPY_SW].write((val & copy) == 0);
+
+ return status;
+}
+
+/** @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
+ * @return SANE_STATUS_GOOD if a matching strip is found, SANE_STATUS_UNSUPPORTED if not
+ */
+static SANE_Status
+gl847_search_strip (Genesys_Device * dev, const Genesys_Sensor& sensor,
+ SANE_Bool forward, SANE_Bool black)
+{
+ unsigned int pixels, lines, channels;
+ SANE_Status status = SANE_STATUS_GOOD;
+ Genesys_Register_Set local_reg;
+ size_t size;
+ int steps, depth, dpi;
+ unsigned int pass, count, found, x, y;
+ char title[80];
+ GenesysRegister *r;
+
+ DBG(DBG_proc, "%s %s %s\n", __func__, black ? "black" : "white", forward ? "forward" : "reverse");
+
+ gl847_set_fe(dev, sensor, AFE_SET);
+ status = gl847_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to stop: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* set up for a gray scan at lowest dpi */
+ dpi = 9600;
+ for (x = 0; x < MAX_RESOLUTIONS; x++)
+ {
+ if (dev->model->xdpi_values[x] > 0 && dev->model->xdpi_values[x] < dpi)
+ dpi = dev->model->xdpi_values[x];
+ }
+ channels = 1;
+ /* 10 MM */
+ /* lines = (10 * dpi) / MM_PER_INCH; */
+ /* shading calibation is done with dev->motor.base_ydpi */
+ lines = (dev->model->shading_lines * dpi) / dev->motor.base_ydpi;
+ depth = 8;
+ pixels = (sensor.sensor_pixels * dpi) / sensor.optical_res;
+ size = pixels * channels * lines * (depth / 8);
+ std::vector<uint8_t> data(size);
+ dev->scanhead_position_in_steps = 0;
+
+ local_reg = dev->reg;
+
+ SetupParams params;
+ params.xres = dpi;
+ params.yres = dpi;
+ params.startx = 0;
+ params.starty = 0;
+ params.pixels = pixels;
+ params.lines = lines;
+ params.depth = depth;
+ params.channels = channels;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = ScanColorMode::GRAY;
+ params.color_filter = ColorFilter::RED;
+ params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA;
+
+ status = gl847_init_scan_regs(dev, sensor, &local_reg, params);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to setup for scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* set up for reverse or forward */
+ r = sanei_genesys_get_address(&local_reg, REG02);
+ if (forward)
+ r->value &= ~REG02_MTRREV;
+ else
+ r->value |= REG02_MTRREV;
+
+
+ status = dev->model->cmd_set->bulk_write_register(dev, local_reg);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: Failed to bulk write registers: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ status = gl847_begin_scan(dev, sensor, &local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to begin scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* waits for valid data */
+ do
+ sanei_genesys_test_buffer_empty (dev, &steps);
+ while (steps);
+
+ /* now we're on target, we can read data */
+ status = sanei_genesys_read_data_from_scanner(dev, data.data(), size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to read data: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ status = gl847_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: gl847_stop_action failed\n", __func__);
+ return status;
+ }
+
+ pass = 0;
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sprintf(title, "gl847_search_strip_%s_%s%02d.pnm",
+ black ? "black" : "white", forward ? "fwd" : "bwd", (int)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 < 20 && !found)
+ {
+ status =
+ dev->model->cmd_set->bulk_write_register(dev, local_reg);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: Failed to bulk write registers: %s\n", __func__,
+ sane_strstatus(status));
+ return status;
+ }
+
+ /* now start scan */
+ status = gl847_begin_scan(dev, sensor, &local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to begin scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* waits for valid data */
+ do
+ sanei_genesys_test_buffer_empty (dev, &steps);
+ while (steps);
+
+ /* now we're on target, we can read data */
+ status = sanei_genesys_read_data_from_scanner(dev, data.data(), size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to read data: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ status = gl847_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: gl847_stop_action failed\n", __func__);
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sprintf(title, "gl847_search_strip_%s_%s%02d.pnm",
+ black ? "black" : "white", forward ? "fwd" : "bwd", (int)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] > 90)
+ {
+ count++;
+ }
+ /* when searching for white, detect black pixels */
+ if (!black && data[y * pixels + x] < 60)
+ {
+ 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] > 90)
+ {
+ count++;
+ }
+ /* when searching for white, detect black pixels */
+ if (!black && data[y * pixels + x] < 60)
+ {
+ 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)
+ {
+ status = SANE_STATUS_GOOD;
+ DBG(DBG_info, "%s: %s strip found\n", __func__, black ? "black" : "white");
+ }
+ else
+ {
+ status = SANE_STATUS_UNSUPPORTED;
+ DBG(DBG_info, "%s: %s strip not found\n", __func__, black ? "black" : "white");
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/**
+ * average dark pixels of a 8 bits scan
+ */
+static int
+dark_average (uint8_t * data, unsigned int pixels, unsigned int lines,
+ unsigned int channels, unsigned int black)
+{
+ unsigned int i, j, k, average, count;
+ unsigned int avg[3];
+ uint8_t val;
+
+ /* computes average value on black margin */
+ for (k = 0; k < channels; k++)
+ {
+ avg[k] = 0;
+ count = 0;
+ for (i = 0; i < lines; i++)
+ {
+ for (j = 0; j < black; j++)
+ {
+ val = data[i * channels * pixels + j + k];
+ avg[k] += val;
+ count++;
+ }
+ }
+ if (count)
+ avg[k] /= count;
+ DBG(DBG_info, "%s: avg[%d] = %d\n", __func__, k, avg[k]);
+ }
+ average = 0;
+ for (i = 0; i < channels; i++)
+ average += avg[i];
+ average /= channels;
+ DBG(DBG_info, "%s: average = %d\n", __func__, average);
+ return average;
+}
+
+static SANE_Status
+gl847_offset_calibration(Genesys_Device * dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set& regs)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t reg04;
+ unsigned int channels, bpp;
+ int pass = 0, avg, total_size;
+ int topavg, bottomavg, resolution, lines;
+ int top, bottom, black_pixels, pixels;
+
+ DBGSTART;
+
+ /* no gain nor offset for AKM AFE */
+ RIE (sanei_genesys_read_register (dev, REG04, &reg04));
+ if ((reg04 & REG04_FESET) == 0x02)
+ {
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+ resolution=sensor.optical_res;
+ dev->calib_pixels = sensor.sensor_pixels;
+ lines=1;
+ bpp=8;
+ pixels= (sensor.sensor_pixels*resolution) / sensor.optical_res;
+ black_pixels = (sensor.black_pixels * resolution) / sensor.optical_res;
+ DBG(DBG_io2, "%s: black_pixels=%d\n", __func__, black_pixels);
+
+ SetupParams params;
+ params.xres = resolution;
+ params.yres = resolution;
+ params.startx = 0;
+ params.starty = 0;
+ params.pixels = pixels;
+ params.lines = lines;
+ params.depth = bpp;
+ params.channels = channels;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ params.color_filter = dev->settings.color_filter;
+ params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ status = gl847_init_scan_regs(dev, sensor, &regs, params);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+ sanei_genesys_set_motor_power(regs, false);
+
+ /* allocate memory for scans */
+ total_size = pixels * channels * lines * (bpp/8); /* colors * bytes_per_color * scan lines */
+
+ std::vector<uint8_t> first_line(total_size);
+ std::vector<uint8_t> second_line(total_size);
+
+ /* init gain */
+ dev->frontend.set_gain(0, 0);
+ dev->frontend.set_gain(1, 0);
+ dev->frontend.set_gain(2, 0);
+
+ /* scan with no move */
+ bottom = 10;
+ dev->frontend.set_offset(0, bottom);
+ dev->frontend.set_offset(1, bottom);
+ dev->frontend.set_offset(2, bottom);
+
+ RIE(gl847_set_fe(dev, sensor, AFE_SET));
+ RIE(dev->model->cmd_set->bulk_write_register(dev, regs));
+ DBG(DBG_info, "%s: starting first line reading\n", __func__);
+ RIE(gl847_begin_scan(dev, sensor, &regs, SANE_TRUE));
+ RIE(sanei_genesys_read_data_from_scanner(dev, first_line.data(), total_size));
+ if (DBG_LEVEL >= DBG_data)
+ {
+ char fn[30];
+ snprintf(fn, 30, "gl847_offset%03d.pnm", bottom);
+ sanei_genesys_write_pnm_file(fn, first_line.data(), bpp, channels, pixels, lines);
+ }
+
+ bottomavg = dark_average (first_line.data(), pixels, lines, channels, black_pixels);
+ DBG(DBG_io2, "%s: bottom avg=%d\n", __func__, bottomavg);
+
+ /* now top value */
+ top = 255;
+ dev->frontend.set_offset(0, top);
+ dev->frontend.set_offset(1, top);
+ dev->frontend.set_offset(2, top);
+ RIE(gl847_set_fe(dev, sensor, AFE_SET));
+ RIE(dev->model->cmd_set->bulk_write_register(dev, regs));
+ DBG(DBG_info, "%s: starting second line reading\n", __func__);
+ RIE(gl847_begin_scan(dev, sensor, &regs, SANE_TRUE));
+ RIE(sanei_genesys_read_data_from_scanner (dev, second_line.data(), total_size));
+
+ topavg = dark_average(second_line.data(), pixels, lines, channels, black_pixels);
+ DBG(DBG_io2, "%s: top avg=%d\n", __func__, topavg);
+
+ /* loop until acceptable level */
+ while ((pass < 32) && (top - bottom > 1))
+ {
+ pass++;
+
+ /* settings for new scan */
+ 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 with no move */
+ RIE(gl847_set_fe(dev, sensor, AFE_SET));
+ RIE(dev->model->cmd_set->bulk_write_register(dev, regs));
+ DBG(DBG_info, "%s: starting second line reading\n", __func__);
+ RIE(gl847_begin_scan(dev, sensor, &regs, SANE_TRUE));
+ RIE(sanei_genesys_read_data_from_scanner (dev, second_line.data(), total_size));
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ char fn[30];
+ snprintf(fn, 30, "gl847_offset%03d.pnm", dev->frontend.get_offset(1));
+ sanei_genesys_write_pnm_file(fn, second_line.data(), bpp, channels, pixels, lines);
+ }
+
+ avg = dark_average(second_line.data(), pixels, lines, channels, black_pixels);
+ DBG(DBG_info, "%s: avg=%d offset=%d\n", __func__, avg, dev->frontend.get_offset(1));
+
+ /* compute new boundaries */
+ if (topavg == avg)
+ {
+ topavg = avg;
+ top = dev->frontend.get_offset(1);
+ }
+ else
+ {
+ bottomavg = avg;
+ bottom = dev->frontend.get_offset(1);
+ }
+ }
+ 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));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl847_coarse_gain_calibration(Genesys_Device * dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set& regs, int dpi)
+{
+ int pixels;
+ int total_size;
+ uint8_t reg04;
+ int i, j, channels;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int max[3];
+ float gain[3],coeff;
+ int val, code, lines;
+ int resolution;
+ int bpp;
+
+ DBG(DBG_proc, "%s: dpi = %d\n", __func__, dpi);
+
+ /* no gain nor offset for AKM AFE */
+ RIE (sanei_genesys_read_register (dev, REG04, &reg04));
+ if ((reg04 & REG04_FESET) == 0x02)
+ {
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* coarse gain calibration is always done in color mode */
+ channels = 3;
+
+ /* follow CKSEL */
+ if(dev->settings.xres<sensor.optical_res)
+ {
+ coeff=0.9;
+ /*resolution=sensor.optical_res/2; */
+ resolution=sensor.optical_res;
+ }
+ else
+ {
+ resolution=sensor.optical_res;
+ coeff=1.0;
+ }
+ lines=10;
+ bpp=8;
+ pixels = (sensor.sensor_pixels * resolution) / sensor.optical_res;
+
+ SetupParams params;
+ params.xres = resolution;
+ params.yres = resolution;
+ params.startx = 0;
+ params.starty = 0;
+ params.pixels = pixels;
+ params.lines = lines;
+ params.depth = bpp;
+ params.channels = channels;
+ params.scan_method = dev->settings.scan_method;
+ params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ params.color_filter = dev->settings.color_filter;
+ params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ try {
+ status = gl847_init_scan_regs(dev, sensor, &regs, params);
+ } catch (...) {
+ try {
+ sanei_genesys_set_motor_power(regs, false);
+ } catch (...) {}
+ throw;
+ }
+
+ sanei_genesys_set_motor_power(regs, false);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ RIE(dev->model->cmd_set->bulk_write_register(dev, regs));
+
+ total_size = pixels * channels * (16/bpp) * lines;
+
+ std::vector<uint8_t> line(total_size);
+
+ RIE(gl847_set_fe(dev, sensor, AFE_SET));
+ RIE(gl847_begin_scan(dev, sensor, &regs, SANE_TRUE));
+ RIE(sanei_genesys_read_data_from_scanner(dev, line.data(), total_size));
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file("gl847_gain.pnm", line.data(), bpp, channels, pixels, lines);
+
+ /* average value on each channel */
+ for (j = 0; j < channels; j++)
+ {
+ max[j] = 0;
+ for (i = pixels/4; i < (pixels*3/4); i++)
+ {
+ if(bpp==16)
+ {
+ if (dev->model->is_cis)
+ val =
+ line[i * 2 + j * 2 * pixels + 1] * 256 +
+ line[i * 2 + j * 2 * pixels];
+ else
+ val =
+ line[i * 2 * channels + 2 * j + 1] * 256 +
+ line[i * 2 * channels + 2 * j];
+ }
+ else
+ {
+ if (dev->model->is_cis)
+ val = line[i + j * pixels];
+ else
+ val = line[i * channels + j];
+ }
+
+ max[j] += val;
+ }
+ max[j] = max[j] / (pixels/2);
+
+ gain[j] = ((float) sensor.gain_white_ref*coeff) / max[j];
+
+ /* turn logical gain value into gain code, checking for overflow */
+ code = 283 - 208 / gain[j];
+ if (code > 255)
+ code = 255;
+ else if (code < 0)
+ code = 0;
+ dev->frontend.set_gain(j, code);
+
+ DBG(DBG_proc, "%s: channel %d, max=%d, gain = %f, setting:%d\n", __func__, j, max[j], gain[j],
+ dev->frontend.get_gain(j));
+ }
+
+ 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));
+ }
+
+ RIE (gl847_stop_action (dev));
+
+ status=gl847_slow_back_home (dev, SANE_TRUE);
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/** the gl847 command set */
+static Genesys_Command_Set gl847_cmd_set = {
+ "gl847-generic", /* the name of this set */
+
+ nullptr,
+
+ gl847_init,
+ NULL, /*gl847_init_regs_for_warmup*/
+ gl847_init_regs_for_coarse_calibration,
+ gl847_init_regs_for_shading,
+ gl847_init_regs_for_scan,
+
+ gl847_get_filter_bit,
+ gl847_get_lineart_bit,
+ gl847_get_bitset_bit,
+ gl847_get_gain4_bit,
+ gl847_get_fast_feed_bit,
+ gl847_test_buffer_empty_bit,
+ gl847_test_motor_flag_bit,
+
+ gl847_set_fe,
+ gl847_set_powersaving,
+ gl847_save_power,
+
+ gl847_begin_scan,
+ gl847_end_scan,
+
+ sanei_genesys_send_gamma_table,
+
+ gl847_search_start_position,
+
+ gl847_offset_calibration,
+ gl847_coarse_gain_calibration,
+ gl847_led_calibration,
+
+ NULL,
+ gl847_slow_back_home,
+ NULL, /* disable gl847_rewind, see #7 */
+
+ sanei_genesys_bulk_write_register,
+ NULL,
+ sanei_genesys_bulk_read_data,
+
+ gl847_update_hardware_sensors,
+
+ NULL, /* no known gl847 sheetfed scanner */
+ NULL, /* no known gl847 sheetfed scanner */
+ NULL, /* no known gl847 sheetfed scanner */
+ gl847_search_strip,
+
+ sanei_genesys_is_compatible_calibration,
+ NULL,
+ gl847_send_shading_data,
+ gl847_calculate_current_setup,
+ gl847_boot
+};
+
+SANE_Status
+sanei_gl847_init_cmd_set (Genesys_Device * dev)
+{
+ dev->model->cmd_set = &gl847_cmd_set;
+ return SANE_STATUS_GOOD;
+}