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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_gl843.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_gl843.cc')
-rw-r--r--backend/genesys_gl843.cc4415
1 files changed, 4415 insertions, 0 deletions
diff --git a/backend/genesys_gl843.cc b/backend/genesys_gl843.cc
new file mode 100644
index 0000000..a72dc5a
--- /dev/null
+++ b/backend/genesys_gl843.cc
@@ -0,0 +1,4415 @@
+/* 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_gl843.h"
+
+#include <string>
+#include <vector>
+
+/****************************************************************************
+ Low level function
+ ****************************************************************************/
+
+/* ------------------------------------------------------------------------ */
+/* Read and write RAM, registers and AFE */
+/* ------------------------------------------------------------------------ */
+
+/* Set address for writing data */
+static SANE_Status
+gl843_set_buffer_address (Genesys_Device * dev, uint32_t addr)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG(DBG_io, "%s: setting address to 0x%05x\n", __func__, addr & 0xffff);
+
+ status = sanei_genesys_write_register (dev, 0x5b, ((addr >> 8) & 0xff));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed while writing high byte: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ status = sanei_genesys_write_register (dev, 0x5c, (addr & 0xff));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed while writing low byte: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ DBG(DBG_io, "%s: completed\n", __func__);
+
+ return status;
+}
+
+/**
+ * writes a block of data to RAM
+ * @param dev USB device
+ * @param addr RAM address to write to
+ * @param size size of the chunk of data
+ * @param data pointer to the data to write
+ */
+static SANE_Status
+write_data (Genesys_Device * dev, uint32_t addr, uint32_t size,
+ uint8_t * data)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBGSTART;
+
+ status = gl843_set_buffer_address (dev, addr);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed while setting address for bulk write data: %s\n", __func__,
+ sane_strstatus(status));
+ return status;
+ }
+
+ /* write actual data */
+ status = sanei_genesys_bulk_write_data(dev, 0x28, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed while writing bulk write data: %s\n", __func__,
+ sane_strstatus(status));
+ return status;
+ }
+
+ /* set back address to 0 */
+ status = gl843_set_buffer_address (dev, 0);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed setting to default RAM address: %s\n", __func__,
+ sane_strstatus(status));
+ return status;
+ }
+ DBGCOMPLETED;
+ return status;
+}
+
+/****************************************************************************
+ Mid level functions
+ ****************************************************************************/
+
+static SANE_Bool
+gl843_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
+gl843_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
+gl843_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
+gl843_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
+gl843_get_gain4_bit (Genesys_Register_Set * regs)
+{
+ GenesysRegister *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG06);
+ if (r && (r->value & REG06_GAIN4))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+/**
+ * compute the step multiplier used
+ */
+static int
+gl843_get_step_multiplier (Genesys_Register_Set * regs)
+{
+ GenesysRegister *r = NULL;
+ int value = 1;
+
+ r = sanei_genesys_get_address (regs, REG9D);
+ if (r != NULL)
+ {
+ switch (r->value & 0x0c)
+ {
+ case 0x04:
+ value = 2;
+ break;
+ case 0x08:
+ value = 4;
+ break;
+ default:
+ value = 1;
+ }
+ }
+ DBG(DBG_io, "%s: step multiplier is %d\n", __func__, value);
+ return value;
+}
+
+static SANE_Bool
+gl843_test_buffer_empty_bit (SANE_Byte val)
+{
+ if (val & REG41_BUFEMPTY)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl843_test_motor_flag_bit (SANE_Byte val)
+{
+ if (val & REG41_MOTORENB)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+/** copy sensor specific settings */
+static void
+gl843_setup_sensor (Genesys_Device * dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set * regs, int dpi,int flags)
+{
+ (void) dpi;
+ (void) flags;
+
+ DBGSTART;
+
+ for (const auto& custom_reg : sensor.custom_regs) {
+ regs->set8(custom_reg.address, custom_reg.value);
+ }
+ if (!(dev->model->flags & GENESYS_FLAG_FULL_HWDPI_MODE)) {
+ regs->set8(0x7d, 0x90);
+ }
+
+ 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
+gl843_init_registers (Genesys_Device * dev)
+{
+ // Within this function SENSOR_DEF marker documents that a register is part
+ // of the sensors definition and the actual value is set in
+ // gl843_setup_sensor().
+
+ DBGSTART;
+
+ dev->reg.clear();
+
+ /* default to KV-SS080 */
+ SETREG (0xa2, 0x0f);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0xa2, 0x1f);
+ }
+ SETREG (0x01, 0x00);
+ SETREG (0x02, 0x78);
+ SETREG (0x03, 0x1f);
+ SETREG (0x04, 0x10);
+
+ // fine tune upon device description
+ SETREG (0x05, 0x80);
+ if (dev->model->model_id == MODEL_HP_SCANJET_G4010 ||
+ dev->model->model_id == MODEL_HP_SCANJET_G4050 ||
+ dev->model->model_id == MODEL_HP_SCANJET_4850C)
+ {
+ SETREG (0x05, 0x08);
+ }
+
+ 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;
+ }
+
+ // TODO: on 8600F the windows driver turns off GAIN4 which is recommended
+ SETREG (0x06, 0xd8); /* SCANMOD=110, PWRBIT and GAIN4 */
+ SETREG (0x08, 0x00);
+ SETREG (0x09, 0x00);
+ SETREG (0x0a, 0x00);
+
+ // This register controls clock and RAM settings and is further modified in
+ // gl843_boot
+ SETREG (0x0b, 0x6a);
+
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x0b, 0x89);
+ }
+
+ // EXPR[0:15], EXPG[0:15], EXPB[0:15]: Exposure time settings.
+ SETREG(0x10, 0x00); // SENSOR_DEF
+ SETREG(0x11, 0x00); // SENSOR_DEF
+ SETREG(0x12, 0x00); // SENSOR_DEF
+ SETREG(0x13, 0x00); // SENSOR_DEF
+ SETREG(0x14, 0x00); // SENSOR_DEF
+ SETREG(0x15, 0x00); // SENSOR_DEF
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ dev->reg.set16(REG_EXPR, 0x9c40);
+ dev->reg.set16(REG_EXPG, 0x9c40);
+ dev->reg.set16(REG_EXPB, 0x9c40);
+ }
+ // CCD signal settings.
+ SETREG(0x16, 0x33); // SENSOR_DEF
+ SETREG(0x17, 0x1c); // SENSOR_DEF
+ SETREG(0x18, 0x10); // SENSOR_DEF
+
+ // EXPDMY[0:7]: Exposure time of dummy lines.
+ SETREG(0x19, 0x2a); // SENSOR_DEF
+
+ // Various CCD clock settings.
+ SETREG(0x1a, 0x04); // SENSOR_DEF
+ SETREG(0x1b, 0x00); // SENSOR_DEF
+ SETREG(0x1c, 0x20); // SENSOR_DEF
+ SETREG(0x1d, 0x04); // SENSOR_DEF
+
+ SETREG (0x1e, 0x10);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x1e, 0x20);
+ }
+
+ SETREG (0x1f, 0x01);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x1f, 0xff);
+ }
+
+ SETREG (0x20, 0x10);
+ SETREG (0x21, 0x04);
+ SETREG (0x22, 0x01);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x22, 0xc8);
+ }
+
+ SETREG (0x23, 0x01);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x23, 0xc8);
+ }
+
+ SETREG (0x24, 0x04);
+ SETREG (0x25, 0x00);
+ SETREG (0x26, 0x00);
+ SETREG (0x27, 0x00);
+ SETREG (0x2c, 0x02);
+ SETREG (0x2d, 0x58);
+ // BWHI[0:7]: high level of black and white threshold
+ SETREG (0x2e, 0x80);
+ // BWLOW[0:7]: low level of black and white threshold
+ SETREG (0x2f, 0x80);
+ SETREG (0x30, 0x00);
+ SETREG (0x31, 0x14);
+ SETREG (0x32, 0x27);
+ SETREG (0x33, 0xec);
+
+ // DUMMY: CCD dummy and optically black pixel count
+ SETREG (0x34, 0x24);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x34, 0x14);
+ }
+
+ // MAXWD: If available buffer size is less than 2*MAXWD words, then
+ // "buffer full" state will be set.
+ SETREG (0x35, 0x00);
+ SETREG (0x36, 0xff);
+ SETREG (0x37, 0xff);
+
+ // LPERIOD: Line period or exposure time for CCD or CIS.
+ SETREG(0x38, 0x55); // SENSOR_DEF
+ SETREG(0x39, 0xf0); // SENSOR_DEF
+
+ // FEEDL[0:24]: The number of steps of motor movement.
+ SETREG(0x3d, 0x00);
+ SETREG (0x3e, 0x00);
+ SETREG (0x3f, 0x01);
+
+ // Latch points for high and low bytes of R, G and B channels of AFE. If
+ // multiple clocks per pixel are consumed, then the setting defines during
+ // which clock the corresponding value will be read.
+ // RHI[0:4]: The latch point for high byte of R channel.
+ // RLOW[0:4]: The latch point for low byte of R channel.
+ // GHI[0:4]: The latch point for high byte of G channel.
+ // GLOW[0:4]: The latch point for low byte of G channel.
+ // BHI[0:4]: The latch point for high byte of B channel.
+ // BLOW[0:4]: The latch point for low byte of B channel.
+ SETREG(0x52, 0x01); // SENSOR_DEF
+ SETREG(0x53, 0x04); // SENSOR_DEF
+ SETREG(0x54, 0x07); // SENSOR_DEF
+ SETREG(0x55, 0x0a); // SENSOR_DEF
+ SETREG(0x56, 0x0d); // SENSOR_DEF
+ SETREG(0x57, 0x10); // SENSOR_DEF
+
+ // VSMP[0:4]: The position of the image sampling pulse for AFE in cycles.
+ // VSMPW[0:2]: The length of the image sampling pulse for AFE in cycles.
+ SETREG(0x58, 0x1b); // SENSOR_DEF
+
+ SETREG(0x59, 0x00); // SENSOR_DEF
+ SETREG(0x5a, 0x40); // SENSOR_DEF
+
+ // 0x5b-0x5c: GMMADDR[0:15] address for gamma or motor tables download
+ // SENSOR_DEF
+
+ // DECSEL[0:2]: The number of deceleratino steps after touching home sensor
+ // STOPTIM[0:4]: The stop duration between change of directions in
+ // backtracking
+ SETREG (0x5e, 0x23);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x5e, 0x1f);
+ }
+
+ // FMOVDEC: The number of deceleration steps in table 5 for auto-go-home
+ SETREG (0x5f, 0x01);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x5f, 0xf0);
+ }
+
+ // Z1MOD[0:20]
+ SETREG (0x60, 0x00);
+ SETREG (0x61, 0x00);
+ SETREG (0x62, 0x00);
+
+ // Z2MOD[0:20]
+ SETREG (0x63, 0x00);
+ SETREG (0x64, 0x00);
+ SETREG (0x65, 0x00);
+
+ // STEPSEL[0:1]. Motor movement step mode selection for tables 1-3 in
+ // scanning mode.
+ // MTRPWM[0:5]. Motor phase PWM duty cycle setting for tables 1-3
+ SETREG (0x67, 0x7f);
+ // FSTPSEL[0:1]: Motor movement step mode selection for tables 4-5 in
+ // command mode.
+ // FASTPWM[5:0]: Motor phase PWM duty cycle setting for tables 4-5
+ SETREG (0x68, 0x7f);
+
+ // FSHDEC[0:7]: The number of deceleration steps after scanning is finished
+ // (table 3)
+ SETREG (0x69, 0x01);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x69, 64);
+ }
+
+ // FMOVNO[0:7] The number of acceleration or deceleration steps for fast
+ // moving (table 4)
+ SETREG (0x6a, 0x04);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x69, 64);
+ }
+
+ // GPIO-related register bits
+ SETREG (0x6b, 0x30);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x6b, 0x72);
+ }
+
+ // 0x6c, 0x6d, 0x6e, 0x6f are set according to gpio tables. See
+ // gl843_init_gpio.
+
+ // RSH[0:4]: The position of rising edge of CCD RS signal in cycles
+ // RSL[0:4]: The position of falling edge of CCD RS signal in cycles
+ // CPH[0:4]: The position of rising edge of CCD CP signal in cycles.
+ // CPL[0:4]: The position of falling edge of CCD CP signal in cycles
+ SETREG(0x70, 0x01); // SENSOR_DEF
+ SETREG(0x71, 0x03); // SENSOR_DEF
+ SETREG (0x72, 0x04);
+ SETREG (0x73, 0x05);
+
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x70, 0x00);
+ SETREG(0x71, 0x02);
+ SETREG(0x72, 0x02);
+ SETREG(0x73, 0x04);
+ }
+
+ // CK1MAP[0:17], CK3MAP[0:17], CK4MAP[0:17]: CCD clock bit mapping setting.
+ SETREG(0x74, 0x00); // SENSOR_DEF
+ SETREG(0x75, 0x00); // SENSOR_DEF
+ SETREG(0x76, 0x3c); // SENSOR_DEF
+ SETREG(0x77, 0x00); // SENSOR_DEF
+ SETREG(0x78, 0x00); // SENSOR_DEF
+ SETREG(0x79, 0x9f); // SENSOR_DEF
+ SETREG(0x7a, 0x00); // SENSOR_DEF
+ SETREG(0x7b, 0x00); // SENSOR_DEF
+ SETREG(0x7c, 0x55); // SENSOR_DEF
+
+ // various AFE settings
+ SETREG(0x7d, 0x00);
+
+ // GPOLED[x]: LED vs GPIO settings
+ SETREG(0x7e, 0x00);
+
+ // BSMPDLY, VSMPDLY
+ // LEDCNT[0:1]: Controls led blinking and its period
+ SETREG (0x7f, 0x00);
+
+ // VRHOME, VRMOVE, VRBACK, VRSCAN: Vref settings of the motor driver IC for
+ // moving in various situations.
+ SETREG (0x80, 0x00);
+
+ if (dev->model->model_id != MODEL_CANON_CANOSCAN_4400F)
+ {
+ // NOTE: Historical code. None of the following 6 registers are
+ // documented in the datasheet. Their default value is 0, so probably it's
+ // not a bad idea to leave this here.
+ SETREG (0x81, 0x00);
+ SETREG (0x82, 0x00);
+ SETREG (0x83, 0x00);
+ SETREG (0x84, 0x00);
+ SETREG (0x85, 0x00);
+ SETREG (0x86, 0x00);
+ }
+
+ SETREG (0x87, 0x00);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x87, 0x02);
+ }
+
+ // MTRPLS[0:7]: The width of the ADF motor trigger signal pulse.
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x94, 0xff);
+ }
+
+ // 0x95-0x97: SCANLEN[0:19]: Controls when paper jam bit is set in sheetfed
+ // scanners.
+
+ // ONDUR[0:15]: The duration of PWM ON phase for LAMP control
+ // OFFDUR[0:15]: The duration of PWM OFF phase for LAMP control
+ // both of the above are in system clocks
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x98, 0x00);
+ SETREG(0x99, 0x00);
+ SETREG(0x9a, 0x00);
+ SETREG(0x9b, 0x00);
+ }
+
+ // RMADLY[0:1], MOTLAG, CMODE, STEPTIM, MULDMYLN, IFRS
+ SETREG(0x9d, 0x04);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0x9d, 0x08); // additionally sets the multiplier for slope tables
+ }
+
+
+ // SEL3INV, TGSTIME[0:2], TGWTIME[0:2]
+ SETREG (0x9e, 0x00); // SENSOR_DEF
+
+ // RFHSET[0:4]: Refresh time of SDRAM in units of 2us
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0xa2, 0x1f);
+ }
+
+ // 0xa6-0xa9: controls gpio, see gl843_gpio_init
+
+ // GPOM9, MULSTOP[0-2], NODECEL, TB3TB1, TB5TB2, FIX16CLK.
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0xab, 0x00);
+ }
+
+ // VRHOME[3:2], VRMOVE[3:2], VRBACK[3:2]: Vref setting of the motor driver IC
+ // for various situations.
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ SETREG(0xac, 0x00);
+ }
+
+ if (dev->model->model_id != MODEL_CANON_CANOSCAN_8400F)
+ {
+ SETREG (0x0c, 0x00);
+ SETREG (0x94, 0xff);
+ SETREG (0xab, 0x50);
+ }
+
+ if (dev->model->model_id != MODEL_CANON_CANOSCAN_4400F
+ && dev->model->model_id != MODEL_CANON_CANOSCAN_8400F)
+ {
+ SETREG (0xaa, 0x00);
+ }
+
+ /* G4050 values */
+ if (dev->model->model_id == MODEL_HP_SCANJET_G4010 ||
+ dev->model->model_id == MODEL_HP_SCANJET_G4050 ||
+ dev->model->model_id == MODEL_HP_SCANJET_4850C)
+ {
+ SETREG (0x03, 0x1d);
+ SETREG (0x06, 0xd0); /* SCANMOD=110, PWRBIT and no GAIN4 */
+ SETREG (0x06, 0xd8); /* SCANMOD=110, PWRBIT and GAIN4 */
+ SETREG (0x0a, 0x18);
+ SETREG (0x0b, 0x69);
+
+ /* CIS exposure is used for XPA lamp movement */
+ SETREG (0x10, 0x2c);
+ SETREG (0x11, 0x09);
+ SETREG (0x12, 0x22);
+ SETREG (0x13, 0xb8);
+ SETREG (0x14, 0x10);
+ SETREG (0x15, 0xf0);
+
+ SETREG (0x6b, 0xf4);
+
+ SETREG (0x70, 0x00);
+ SETREG (0x71, 0x02);
+ SETREG (0x72, 0x00);
+ SETREG (0x73, 0x00);
+
+ SETREG (0x80, 0x50);
+ SETREG (0x9d, 0x08);
+ SETREG (0xab, 0x40);
+
+ /* XXX STEF XXX TODO move to set for scan */
+ SETREG (0x98, 0x03);
+ SETREG (0x99, 0x30);
+ SETREG (0x9a, 0x01);
+ SETREG (0x9b, 0x80);
+ SETREG (0xac, 0x00);
+ }
+
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_4400F)
+ {
+ SETREG (0x06, 0xf0); /* SCANMOD=111, PWRBIT and no GAIN4 */
+ SETREG (0x0b, 0x69); /* 16M only */
+ SETREG (0x1e, 0x20);
+ SETREG (0x22, 0xc8);
+ SETREG (0x23, 0xc8);
+ SETREG (0x5e, 0x3f);
+ SETREG (0x5f, 0xf0);
+ SETREG (0x6b, 0x72);
+ SETREG (0x72, 0x01);
+ SETREG (0x73, 0x03);
+ SETREG (0x80, 0x0c);
+ SETREG (0x87, 0x02); /* MCLOCK -> CK4MAP */
+ SETREG (0x9d, 0x08); /* STEPTIM=2 */
+ SETREG (0xa2, 0x1f);
+ SETREG (0xab, 0x00);
+ sanei_genesys_set_double(&dev->reg,REG_EXPR,0x9c40);
+ sanei_genesys_set_double(&dev->reg,REG_EXPG,0x9c40);
+ sanei_genesys_set_double(&dev->reg,REG_EXPB,0x9c40);
+ }
+
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8400F)
+ {
+ SETREG (0x03, 0x1c);
+ SETREG (0x06, 0xd0); /* SCANMOD=110, PWRBIT and no GAIN4 */
+ SETREG (0x0a, 0x10);
+ SETREG (0x22, 0x50);
+ SETREG (0x23, 0x50);
+ SETREG (0x5e, 0x85);
+ SETREG (0x6b, 0xb1);
+ SETREG (0x1e, 0xa0);
+ SETREG (0x72, 0x03);
+ SETREG (0x73, 0x04);
+ SETREG (0x7d, 0x20);
+ SETREG (0x80, 0x28);
+ SETREG (0x87, 0x02); /* MCLOCK -> CK4MAP */
+ SETREG (0x9d, 0x08); /* STEPTIM=2 */
+ }
+
+ dev->calib_reg = dev->reg;
+
+ DBGCOMPLETED;
+}
+
+/* Send slope table for motor movement
+ slope_table in machine byte order
+ */
+static SANE_Status
+gl843_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);
+
+ 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 : 0x4000, 0x4800, 0x5000, 0x5800, 0x6000 */
+ /* XXX STEF XXX USB 1.1 ? sanei_genesys_write_0x8c (dev, 0x0f, 0x14); */
+ status = write_data (dev, 0x4000 + 0x800 * table_nr, steps * 2, table.data());
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: write data failed writing slope table %d (%s)\n", __func__, table_nr,
+ sane_strstatus(status));
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/* Set values of analog frontend */
+static SANE_Status
+gl843_set_fe (Genesys_Device * dev, const Genesys_Sensor& sensor, uint8_t set)
+{
+ (void) sensor;
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+ int i;
+
+ DBG(DBG_proc, "%s (%s)\n", __func__, set == AFE_INIT ? "init" : set == AFE_SET ? "set" : set ==
+ AFE_POWER_SAVE ? "powersave" : "huh?");
+
+ if (set == AFE_INIT)
+ {
+ DBG(DBG_proc, "%s(): setting DAC %u\n", __func__, dev->model->dac_type);
+ dev->frontend = dev->frontend_initial;
+ }
+
+ /* check analog frontend type */
+ // FIXME: looks like we write to that register with initial data
+ RIE (sanei_genesys_read_register (dev, REG04, &val));
+ if ((val & REG04_FESET) != 0x00)
+ {
+ /* for now there is no support for AD fe */
+ DBG(DBG_proc, "%s(): unsupported frontend type %d\n", __func__,
+ dev->reg.find_reg(0x04).value & REG04_FESET);
+ return SANE_STATUS_UNSUPPORTED;
+ }
+
+ DBG(DBG_proc, "%s(): frontend reset complete\n", __func__);
+
+ for (i = 1; i <= 3; i++)
+ {
+ // FIXME: BUG: we should initialize dev->frontend before first use. Right now it's
+ // initialized during genesys_coarse_calibration()
+ if (dev->frontend.regs.empty()) {
+ status = sanei_genesys_fe_write_data(dev, i, 0x00);
+ } else {
+ status = sanei_genesys_fe_write_data(dev, i, dev->frontend.regs.get_value(0x00 + i));
+ }
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: writing reg[%d] failed: %s\n", __func__, i, sane_strstatus(status));
+ return status;
+ }
+ }
+ for (const auto& reg : sensor.custom_fe_regs) {
+ status = sanei_genesys_fe_write_data(dev, reg.address, reg.value);
+ if (status != SANE_STATUS_GOOD) {
+ DBG(DBG_error, "%s: writing reg[%d] failed: %s\n", __func__, i, sane_strstatus(status));
+ return status;
+ }
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ // FIXME: BUG: see above
+ if (dev->frontend.regs.empty()) {
+ status = sanei_genesys_fe_write_data(dev, 0x20 + i, 0x00);
+ } else {
+ status = sanei_genesys_fe_write_data(dev, 0x20 + i, dev->frontend.get_offset(i));
+ }
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: writing offset[%d] failed: %s\n", __func__, i,
+ sane_strstatus(status));
+ return status;
+ }
+ }
+
+ if (dev->model->ccd_type == CCD_KVSS080)
+ {
+ for (i = 0; i < 3; i++)
+ {
+ // FIXME: BUG: see above
+ if (dev->frontend.regs.empty()) {
+ status = sanei_genesys_fe_write_data(dev, 0x24 + i, 0x00);
+ } else {
+ status = sanei_genesys_fe_write_data(dev, 0x24 + i,
+ dev->frontend.regs.get_value(0x24 + i));
+ }
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: writing sign[%d] failed: %s\n", __func__, i,
+ sane_strstatus(status));
+ return status;
+ }
+ }
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ // FIXME: BUG: see above
+ if (dev->frontend.regs.empty()) {
+ status = sanei_genesys_fe_write_data(dev, 0x28 + i, 0x00);
+ } else {
+ status = sanei_genesys_fe_write_data(dev, 0x28 + i, dev->frontend.get_gain(i));
+ }
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: writing gain[%d] failed: %s\n", __func__, i, sane_strstatus(status));
+ return status;
+ }
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+gl843_init_motor_regs_scan (Genesys_Device * dev,
+ const Genesys_Sensor& sensor,
+ Genesys_Register_Set * reg,
+ unsigned int exposure,
+ 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, coeff;
+ unsigned int lincnt;
+ uint16_t scan_table[1024];
+ uint16_t fast_table[1024];
+ int scan_steps,fast_steps, fast_step_type;
+ unsigned int feedl,factor,dist;
+ GenesysRegister *r;
+ uint32_t z1, z2;
+
+ DBGSTART;
+ DBG(DBG_info, "%s : exposure=%d, scan_yres=%g, scan_step_type=%d, scan_lines=%d, scan_dummy=%d, "
+ "feed_steps=%d, scan_power_mode=%d, flags=%x\n", __func__, exposure, scan_yres,
+ scan_step_type, scan_lines, scan_dummy, feed_steps, scan_power_mode, flags);
+
+ /* get step multiplier */
+ factor = gl843_get_step_multiplier (reg);
+
+ use_fast_fed = 0;
+
+ if((scan_yres>=300 && feed_steps>900) || (flags & MOTOR_FLAG_FEED))
+ use_fast_fed=1;
+
+ lincnt=scan_lines;
+ sanei_genesys_set_triple(reg,REG_LINCNT,lincnt);
+ DBG(DBG_io, "%s: lincnt=%d\n", __func__, lincnt);
+
+ /* 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;
+
+ /* in case of automatic go home, move until home sensor */
+ if (flags & MOTOR_FLAG_AUTO_GO_HOME)
+ r->value |= REG02_AGOHOME | REG02_NOTHOME;
+
+ /* disable backtracking */
+ if ((flags & MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE)
+ ||(scan_yres>=2400)
+ ||(scan_yres>=sensor.optical_res))
+ r->value |= REG02_ACDCDIS;
+
+ /* scan and backtracking slope table */
+ sanei_genesys_slope_table(scan_table,
+ &scan_steps,
+ scan_yres,
+ exposure,
+ dev->motor.base_ydpi,
+ scan_step_type,
+ factor,
+ dev->model->motor_type,
+ gl843_motors);
+ RIE(gl843_send_slope_table (dev, SCAN_TABLE, scan_table, scan_steps*factor));
+ RIE(gl843_send_slope_table (dev, BACKTRACK_TABLE, scan_table, scan_steps*factor));
+
+ /* STEPNO */
+ r = sanei_genesys_get_address (reg, REG_STEPNO);
+ r->value = scan_steps;
+
+ /* FSHDEC */
+ r = sanei_genesys_get_address (reg, REG_FSHDEC);
+ r->value = scan_steps;
+
+ /* fast table */
+ fast_step_type=0;
+ if(scan_step_type<=fast_step_type)
+ {
+ fast_step_type=scan_step_type;
+ }
+ sanei_genesys_slope_table(fast_table,
+ &fast_steps,
+ sanei_genesys_get_lowest_ydpi(dev),
+ exposure,
+ dev->motor.base_ydpi,
+ fast_step_type,
+ factor,
+ dev->model->motor_type,
+ gl843_motors);
+ RIE(gl843_send_slope_table (dev, STOP_TABLE, fast_table, fast_steps*factor));
+ RIE(gl843_send_slope_table (dev, FAST_TABLE, fast_table, fast_steps*factor));
+ RIE(gl843_send_slope_table (dev, HOME_TABLE, fast_table, fast_steps*factor));
+
+ /* FASTNO */
+ r = sanei_genesys_get_address (reg, REG_FASTNO);
+ r->value = fast_steps;
+
+ /* FMOVNO */
+ r = sanei_genesys_get_address (reg, REG_FMOVNO);
+ r->value = fast_steps;
+
+ /* substract acceleration distance from feedl */
+ feedl=feed_steps;
+ feedl<<=scan_step_type;
+
+ dist = scan_steps;
+ if (use_fast_fed)
+ {
+ dist += fast_steps*2;
+ }
+ DBG(DBG_io2, "%s: acceleration distance=%d\n", __func__, dist);
+
+ /* get sure when don't insane value : XXX STEF XXX in this case we should
+ * fall back to single table move */
+ if(dist<feedl)
+ feedl -= dist;
+ else
+ feedl = 1;
+
+ sanei_genesys_set_triple(reg,REG_FEEDL,feedl);
+ DBG(DBG_io, "%s: feedl=%d\n", __func__, feedl);
+
+ /* doesn't seem to matter that much */
+ sanei_genesys_calculate_zmode2 (use_fast_fed,
+ exposure,
+ scan_table,
+ scan_steps,
+ feedl,
+ scan_steps,
+ &z1,
+ &z2);
+ if(scan_yres>600)
+ {
+ z1=0;
+ z2=0;
+ }
+
+ sanei_genesys_set_triple(reg,REG_Z1MOD,z1);
+ DBG(DBG_info, "%s: z1 = %d\n", __func__, z1);
+
+ sanei_genesys_set_triple(reg,REG_Z2MOD,z2);
+ DBG(DBG_info, "%s: z2 = %d\n", __func__, z2);
+
+ r = sanei_genesys_get_address (reg, REG1E);
+ r->value &= 0xf0; /* 0 dummy lines */
+ r->value |= scan_dummy; /* dummy lines */
+
+ r = sanei_genesys_get_address (reg, REG67);
+ r->value = 0x3f | (scan_step_type << REG67S_STEPSEL);
+
+ r = sanei_genesys_get_address (reg, REG68);
+ r->value = 0x3f | (scan_step_type << REG68S_FSTPSEL);
+
+ /* steps for STOP table */
+ r = sanei_genesys_get_address (reg, REG_FMOVDEC);
+ r->value = fast_steps;
+
+ /* Vref XXX STEF XXX : optical divider or step type ? */
+ r = sanei_genesys_get_address (reg, 0x80);
+ if (!(dev->model->flags & GENESYS_FLAG_FULL_HWDPI_MODE))
+ {
+ r->value = 0x50;
+ coeff=sensor.optical_res/sanei_genesys_compute_dpihw(dev, sensor, scan_yres);
+ if (dev->model->motor_type == MOTOR_KVSS080)
+ {
+ if(coeff>=1)
+ {
+ r->value |= 0x05;
+ }
+ }
+ else {
+ switch(coeff)
+ {
+ case 4:
+ r->value |= 0x0a;
+ break;
+ case 2:
+ r->value |= 0x0f;
+ break;
+ case 1:
+ r->value |= 0x0f;
+ break;
+ }
+ }
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/** @brief setup optical related registers
+ * start and pixels are expressed in optical sensor resolution coordinate
+ * space.
+ * @param dev device to use
+ * @param reg registers to set up
+ * @param exposure exposure time to use
+ * @param used_res scanning resolution used, may differ from
+ * scan's one
+ * @param start logical start pixel coordinate
+ * @param pixels logical number of pixels to use
+ * @param channels number of color channles used (1 or 3)
+ * @param depth bit depth of the scan (1, 8 or 16 bits)
+ * @param ccd_size_divisor SANE_TRUE specifies how much x coordinates must be shrunk
+ * @param color_filter to choose the color channel used in gray scans
+ * @param flags to drive specific settings such no calibration, XPA use ...
+ * @return SANE_STATUS_GOOD if OK
+ */
+static SANE_Status
+gl843_init_optical_regs_scan (Genesys_Device * dev,
+ const Genesys_Sensor& sensor,
+ Genesys_Register_Set * reg,
+ unsigned int exposure,
+ int used_res,
+ unsigned int start,
+ unsigned int pixels,
+ int channels,
+ int depth,
+ unsigned ccd_size_divisor,
+ ColorFilter color_filter,
+ int flags)
+{
+ unsigned int words_per_line;
+ unsigned int startx, endx, used_pixels;
+ unsigned int dpiset, dpihw, factor;
+ unsigned int bytes;
+ unsigned int tgtime; /**> exposure time multiplier */
+ unsigned int cksel; /**> clock per system pixel time in capturing image */
+ GenesysRegister *r;
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG(DBG_proc, "%s : exposure=%d, used_res=%d, start=%d, pixels=%d, channels=%d, depth=%d, "
+ "ccd_size_divisor=%d, flags=%x\n", __func__, exposure, used_res, start, pixels, channels,
+ depth, ccd_size_divisor, flags);
+
+ /* tgtime */
+ tgtime = exposure / 65536 + 1;
+ DBG(DBG_io2, "%s: tgtime=%d\n", __func__, tgtime);
+
+ /* 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);
+ factor=sensor.optical_res/dpihw;
+ DBG(DBG_io2, "%s: dpihw=%d (factor=%d)\n", __func__, dpihw, factor);
+
+ /* sensor parameters */
+ gl843_setup_sensor (dev, sensor, reg, dpihw, flags);
+
+ /* resolution is divided according to CKSEL which is known once sensor is set up */
+ r = sanei_genesys_get_address (reg, REG18);
+ cksel= (r->value & REG18_CKSEL)+1;
+ DBG(DBG_io2, "%s: cksel=%d\n", __func__, cksel);
+ dpiset = used_res * cksel;
+
+ /* start and end coordinate in optical dpi coordinates */
+ startx = (start + sensor.dummy_pixel)/cksel;
+
+ used_pixels=pixels/cksel;
+ endx = startx + used_pixels;
+
+ /* pixel coordinate factor correction when used dpihw is not maximal one */
+ startx/=factor;
+ endx/=factor;
+ used_pixels=endx-startx;
+
+ /* in case of stagger we have to start at an odd coordinate */
+ if ((flags & OPTICAL_FLAG_STAGGER)
+ &&((startx & 1)==0))
+ {
+ startx++;
+ endx++;
+ }
+
+ status = gl843_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;
+ if ((flags & OPTICAL_FLAG_DISABLE_SHADING) || (dev->model->flags & GENESYS_FLAG_NO_CALIBRATION))
+ {
+ r->value &= ~REG01_DVDSET;
+ }
+ else
+ {
+ r->value |= REG01_DVDSET;
+ }
+ if(dpihw>600)
+ {
+ r->value |= REG01_SHDAREA;
+ }
+ else
+ {
+ r->value &= ~REG01_SHDAREA;
+ }
+
+ r = sanei_genesys_get_address (reg, REG03);
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ r->value |= REG03_AVEENB;
+ else {
+ r->value &= ~REG03_AVEENB;
+ }
+
+ // FIXME: we probably don't need to set exposure to registers at this point. It was this way
+ // before a refactor.
+ sanei_genesys_set_lamp_power(dev, sensor, *reg, !(flags & OPTICAL_FLAG_DISABLE_LAMP));
+
+ /* select XPA */
+ r->value &= ~REG03_XPASEL;
+ if (flags & OPTICAL_FLAG_USE_XPA)
+ {
+ r->value |= REG03_XPASEL;
+ }
+ reg->state.is_xpa_on = flags & OPTICAL_FLAG_USE_XPA;
+
+ /* BW threshold */
+ r = sanei_genesys_get_address (reg, REG2E);
+ r->value = dev->settings.threshold;
+ r = sanei_genesys_get_address (reg, REG2F);
+ 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;
+
+ sanei_genesys_set_double(reg, REG_DPISET, dpiset * ccd_size_divisor);
+ DBG(DBG_io2, "%s: dpiset used=%d\n", __func__, dpiset * ccd_size_divisor);
+
+ sanei_genesys_set_double(reg, REG_STRPIXEL, startx);
+ sanei_genesys_set_double(reg, REG_ENDPIXEL, endx);
+
+ /* 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 >> 3) + ((words_per_line & 7) ? 1 : 0);
+ }
+ else
+ {
+ words_per_line *= bytes;
+ }
+
+ dev->wpl = words_per_line;
+ dev->bpl = words_per_line;
+
+ 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);
+
+ words_per_line *= channels;
+
+ /* MAXWD is expressed in 2 words unit */
+ /* nousedspace = (mem_bank_range * 1024 / 256 -1 ) * 4; */
+ sanei_genesys_set_triple(reg,REG_MAXWD,(words_per_line)>>1);
+ DBG(DBG_io2, "%s: words_per_line used=%d\n", __func__, words_per_line);
+
+ sanei_genesys_set_double(reg,REG_LPERIOD,exposure/tgtime);
+ DBG(DBG_io2, "%s: exposure used=%d\n", __func__, exposure/tgtime);
+
+ r = sanei_genesys_get_address (reg, REG_DUMMY);
+ r->value = sensor.dummy_pixel;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+struct ScanSession {
+ SetupParams params;
+
+ // whether the session setup has been computed via gl843_compute_session()
+ bool computed = false;
+
+ // whether CCD operates as half-resolution or full resolution at a specific resolution
+ unsigned ccd_size_divisor = 1;
+
+ // the optical resolution of the scanner.
+ unsigned optical_resolution = 0;
+
+ // the number of pixels at the optical resolution.
+ unsigned optical_pixels = 0;
+
+ // the number of bytes in the output of a single line directly from scanner
+ unsigned optical_line_bytes = 0;
+
+ // the resolution of the output data.
+ unsigned output_resolution = 0;
+
+ // the number of pixels in output data
+ unsigned output_pixels = 0;
+
+ // the number of bytes in the output of a single line
+ unsigned output_line_bytes = 0;
+
+ // the number of lines in the output of the scanner. This must be larger than the user
+ // requested number due to line staggering and color channel shifting.
+ unsigned output_line_count = 0;
+
+ // the number of staggered lines (i.e. lines that overlap during scanning due to line being
+ // thinner than the CCD element)
+ unsigned num_staggered_lines = 0;
+
+ // the number of lines that color channels shift due to different physical positions of
+ // different color channels
+ unsigned max_color_shift_lines = 0;
+
+ void assert_computed() const
+ {
+ if (!computed) {
+ throw std::runtime_error("ScanSession is not computed");
+ }
+ }
+};
+
+static unsigned align_int_up(unsigned num, unsigned alignment)
+{
+ unsigned mask = alignment - 1;
+ if (num & mask)
+ num = (num & ~mask) + alignment;
+ return num;
+}
+
+// computes physical parameters for specific scan setup
+static void gl843_compute_session(Genesys_Device* dev, ScanSession& s,
+ const Genesys_Sensor& sensor)
+{
+ s.params.assert_valid();
+ s.ccd_size_divisor = sensor.get_ccd_size_divisor_for_dpi(s.params.xres);
+
+ s.optical_resolution = sensor.optical_res / s.ccd_size_divisor;
+
+ if (s.params.flags & SCAN_FLAG_USE_OPTICAL_RES) {
+ s.output_resolution = s.optical_resolution;
+ } else {
+ // resolution is choosen from a fixed list and can be used directly
+ // unless we have ydpi higher than sensor's maximum one
+ if (s.params.xres > s.optical_resolution)
+ s.output_resolution = s.optical_resolution;
+ else
+ s.output_resolution = s.params.xres;
+ }
+
+ // compute rounded up number of optical pixels
+ s.optical_pixels = (s.params.pixels * s.optical_resolution) / s.params.xres;
+ if (s.optical_pixels * s.params.xres < s.params.pixels * s.optical_resolution)
+ s.optical_pixels++;
+
+ // ensure the number of optical pixels is divisible by 2.
+ // In quarter-CCD mode optical_pixels is 4x larger than the actual physical number
+ s.optical_pixels = align_int_up(s.optical_pixels, 2 * s.ccd_size_divisor);
+
+ s.output_pixels =
+ (s.optical_pixels * s.output_resolution) / s.optical_resolution;
+
+ // Note: staggering is not applied for calibration. Staggering starts at 2400 dpi
+ s.num_staggered_lines = 0;
+ if ((s.params.yres > 1200) &&
+ ((s.params.flags & SCAN_FLAG_IGNORE_LINE_DISTANCE) == 0) &&
+ (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE))
+ {
+ s.num_staggered_lines = (4 * s.params.yres) / dev->motor.base_ydpi;
+ }
+
+ s.max_color_shift_lines = sanei_genesys_compute_max_shift(dev, s.params.channels,
+ s.params.yres, s.params.flags);
+
+ s.output_line_count = s.params.lines + s.max_color_shift_lines + s.num_staggered_lines;
+
+ s.optical_line_bytes = (s.optical_pixels * s.params.channels * s.params.depth) / 8;
+ s.output_line_bytes = (s.output_pixels * s.params.channels * s.params.depth) / 8;
+ s.computed = true;
+}
+
+/* set up registers for an actual scan
+ *
+ * this function sets up the scanner to scan in normal or single line mode
+ */
+static SANE_Status gl843_init_scan_regs(Genesys_Device* dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set* reg,
+ ScanSession& session)
+{
+ session.assert_computed();
+
+ int start;
+ int move;
+ unsigned int oflags, mflags; /**> optical and motor flags */
+ int exposure;
+
+ int slope_dpi = 0;
+ int dummy = 0;
+ int scan_step_type = 1;
+ int scan_power_mode = 0;
+ size_t requested_buffer_size, read_buffer_size;
+
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG(DBG_info, "%s ", __func__);
+ debug_dump(DBG_info, session.params);
+
+ DBG(DBG_info, "%s : stagger=%d lines\n", __func__, session.num_staggered_lines);
+
+ /* we enable true gray for cis scanners only, and just when doing
+ * scan since color calibration is OK for this mode
+ */
+ oflags = 0;
+ if (session.params.flags & SCAN_FLAG_DISABLE_SHADING)
+ oflags |= OPTICAL_FLAG_DISABLE_SHADING;
+ if (session.params.flags & SCAN_FLAG_DISABLE_GAMMA)
+ oflags |= OPTICAL_FLAG_DISABLE_GAMMA;
+ if (session.params.flags & SCAN_FLAG_DISABLE_LAMP)
+ oflags |= OPTICAL_FLAG_DISABLE_LAMP;
+ if (session.params.flags & SCAN_FLAG_CALIBRATION)
+ oflags |= OPTICAL_FLAG_DISABLE_DOUBLE;
+ if (session.num_staggered_lines)
+ oflags |= OPTICAL_FLAG_STAGGER;
+ if (session.params.flags & SCAN_FLAG_USE_XPA)
+ oflags |= OPTICAL_FLAG_USE_XPA;
+
+
+ /* compute scan parameters values */
+ /* pixels are allways given at full optical resolution */
+ /* use detected left margin and fixed value */
+ /* start */
+ start = session.params.startx;
+
+ dummy = 0;
+ /* dummy = 1; XXX STEF XXX */
+
+ /* slope_dpi */
+ /* cis color scan is effectively a gray scan with 3 gray lines per color line and a FILTER of 0 */
+ if (dev->model->is_cis)
+ slope_dpi = session.params.yres * session.params.channels;
+ else
+ slope_dpi = session.params.yres;
+ slope_dpi = slope_dpi * (1 + dummy);
+
+ /* scan_step_type */
+ exposure = sensor.exposure_lperiod;
+ if (exposure < 0) {
+ throw std::runtime_error("Exposure not defined in sensor definition");
+ }
+ scan_step_type = sanei_genesys_compute_step_type(gl843_motors, dev->model->motor_type, exposure);
+
+ DBG(DBG_info, "%s : exposure=%d pixels\n", __func__, exposure);
+ 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 (session.params.flags & SCAN_FLAG_DYNAMIC_LINEART) {
+ session.params.depth = 8;
+ }
+
+ /* no 16 bit gamma for this ASIC */
+ if (session.params.depth == 16)
+ {
+ session.params.flags |= SCAN_FLAG_DISABLE_GAMMA;
+ oflags |= OPTICAL_FLAG_DISABLE_GAMMA;
+ }
+
+ /* now _LOGICAL_ optical values used are known, setup registers */
+ status = gl843_init_optical_regs_scan (dev, sensor,
+ reg,
+ exposure,
+ session.output_resolution,
+ start,
+ session.optical_pixels,
+ session.params.channels,
+ session.params.depth,
+ session.ccd_size_divisor,
+ session.params.color_filter,
+ oflags);
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ /*** motor parameters ***/
+
+ /* it seems base_dpi of the G4050 motor is changed above 600 dpi*/
+ if (dev->model->motor_type == MOTOR_G4050 && session.params.yres>600)
+ {
+ dev->ld_shift_r = (dev->model->ld_shift_r*3800)/dev->motor.base_ydpi;
+ dev->ld_shift_g = (dev->model->ld_shift_g*3800)/dev->motor.base_ydpi;
+ dev->ld_shift_b = (dev->model->ld_shift_b*3800)/dev->motor.base_ydpi;
+ }
+ else
+ {
+ dev->ld_shift_r = dev->model->ld_shift_r;
+ dev->ld_shift_g = dev->model->ld_shift_g;
+ dev->ld_shift_b = dev->model->ld_shift_b;
+ }
+
+ /* add tl_y to base movement */
+ move = session.params.starty;
+ DBG(DBG_info, "%s: move=%d steps\n", __func__, move);
+
+
+ mflags=0;
+ if(session.params.flags & SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE)
+ mflags|=MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE;
+ if(session.params.flags & SCAN_FLAG_FEEDING)
+ mflags|=MOTOR_FLAG_FEED;
+ if (session.params.flags & SCAN_FLAG_USE_XPA)
+ mflags |= MOTOR_FLAG_USE_XPA;
+
+ status = gl843_init_motor_regs_scan (dev, sensor,
+ reg,
+ exposure,
+ slope_dpi,
+ scan_step_type,
+ dev->model->is_cis ? session.output_line_count * session.params.channels
+ : session.output_line_count,
+ dummy,
+ move,
+ scan_power_mode,
+ mflags);
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ /* since we don't have sheetfed scanners to handle,
+ * use huge read buffer */
+ /* TODO find the best size according to settings */
+ requested_buffer_size = 16 * session.output_line_bytes;
+
+ read_buffer_size =
+ 2 * requested_buffer_size +
+ (session.max_color_shift_lines + session.num_staggered_lines) * session.optical_line_bytes;
+
+ 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 * session.params.pixels * session.params.channels *
+ session.params.depth) / 8);
+
+ dev->read_bytes_left = session.output_line_bytes * session.output_line_count;
+
+ 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 = session.params;
+ dev->current_setup.pixels = session.output_pixels;
+ DBG(DBG_info, "%s: current_setup.pixels=%d\n", __func__, dev->current_setup.pixels);
+ dev->current_setup.lines = session.output_line_count;
+ dev->current_setup.depth = session.params.depth;
+ dev->current_setup.channels = session.params.channels;
+ dev->current_setup.exposure_time = exposure;
+ dev->current_setup.xres = session.output_resolution;
+ dev->current_setup.yres = session.params.yres;
+ dev->current_setup.ccd_size_divisor = session.ccd_size_divisor;
+ dev->current_setup.stagger = session.num_staggered_lines;
+ dev->current_setup.max_shift = session.max_color_shift_lines + session.num_staggered_lines;
+
+ dev->total_bytes_read = 0;
+ if (session.params.depth == 1) {
+ dev->total_bytes_to_read = ((session.params.pixels * session.params.lines) / 8 +
+ (((session.params.pixels * session.params.lines) % 8) ? 1 : 0)) *
+ session.params.channels;
+ } else {
+ dev->total_bytes_to_read = session.params.pixels * session.params.lines *
+ session.params.channels * (session.params.depth / 8);
+ }
+
+ DBG(DBG_info, "%s: total bytes to send = %lu\n", __func__, (u_long) dev->total_bytes_to_read);
+
+ DBG(DBG_proc, "%s: completed\n", __func__);
+ return SANE_STATUS_GOOD;
+}
+
+static void
+gl843_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;
+ int stagger;
+
+ int max_shift;
+
+ int optical_res;
+
+ DBG(DBG_info, "%s ", __func__);
+ debug_dump(DBG_info, dev->settings);
+
+ /* we have 2 domains for ccd: xres below or above half ccd max dpi */
+ unsigned ccd_size_divisor = sensor.get_ccd_size_divisor_for_dpi(dev->settings.xres);
+
+ /* 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 */
+ if(dev->settings.scan_method==ScanMethod::TRANSPARENCY)
+ start = SANE_UNFIX (dev->model->x_offset_ta);
+ else
+ start = SANE_UNFIX (dev->model->x_offset);
+
+ start /= ccd_size_divisor;
+
+ 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);
+
+ /* optical_res */
+ optical_res = sensor.optical_res / ccd_size_divisor;
+
+ /* stagger */
+ if (ccd_size_divisor == 1 && (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);
+
+ if (params.xres <= (unsigned) optical_res) {
+ used_res = params.xres;
+ } else {
+ used_res = optical_res;
+ }
+
+ /* 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) / params.xres;
+ DBG(DBG_info, "%s: used_pixels=%d\n", __func__, used_pixels);
+
+ /* exposure */
+ exposure = sensor.exposure_lperiod;
+ if (exposure < 0) {
+ throw std::runtime_error("Exposure not defined in sensor definition");
+ }
+ DBG(DBG_info, "%s : exposure=%d pixels\n", __func__, exposure);
+
+ /* it seems base_dpi of the G4050 motor is changed above 600 dpi*/
+ if (dev->model->motor_type == MOTOR_G4050 && params.yres>600)
+ {
+ dev->ld_shift_r = (dev->model->ld_shift_r*3800)/dev->motor.base_ydpi;
+ dev->ld_shift_g = (dev->model->ld_shift_g*3800)/dev->motor.base_ydpi;
+ dev->ld_shift_b = (dev->model->ld_shift_b*3800)/dev->motor.base_ydpi;
+ }
+ else
+ {
+ dev->ld_shift_r = dev->model->ld_shift_r;
+ dev->ld_shift_g = dev->model->ld_shift_g;
+ dev->ld_shift_b = dev->model->ld_shift_b;
+ }
+
+ /* scanned area must be enlarged by max color shift needed */
+ 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;
+ DBG(DBG_info, "%s: current_setup.pixels=%d\n", __func__, dev->current_setup.pixels);
+ dev->current_setup.lines = lincnt;
+ dev->current_setup.depth = params.depth;
+ dev->current_setup.channels = params.channels;
+ dev->current_setup.exposure_time = exposure;
+ dev->current_setup.xres = used_res;
+ dev->current_setup.yres = params.yres;
+ dev->current_setup.ccd_size_divisor = ccd_size_divisor;
+ dev->current_setup.stagger = stagger;
+ dev->current_setup.max_shift = max_shift + stagger;
+
+ DBG(DBG_proc, "%s: completed\n", __func__);
+}
+
+/**
+ * for fast power saving methods only, like disabling certain amplifiers
+ * @param dev device to use
+ * @param enable true to set inot powersaving
+ * */
+static SANE_Status
+gl843_save_power (Genesys_Device * dev, SANE_Bool enable)
+{
+ uint8_t val;
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG(DBG_proc, "%s: enable = %d\n", __func__, enable);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+
+ /* switch KV-SS080 lamp off */
+ if (dev->model->gpo_type == GPO_KVSS080)
+ {
+ RIE(sanei_genesys_read_register (dev, REG6C, &val));
+ if(enable)
+ val &= 0xef;
+ else
+ val |= 0x10;
+ RIE(sanei_genesys_write_register(dev,REG6C,val));
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl843_set_powersaving (Genesys_Device * dev, int delay /* in minutes */ )
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG(DBG_proc, "%s (delay = %d)\n", __func__, delay);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+
+ DBGCOMPLETED;
+ return status;
+}
+
+static SANE_Status
+gl843_start_action (Genesys_Device * dev)
+{
+ return sanei_genesys_write_register (dev, 0x0f, 0x01);
+}
+
+static SANE_Status
+gl843_stop_action_no_move(Genesys_Device* dev, Genesys_Register_Set* reg)
+{
+ uint8_t val = sanei_genesys_read_reg_from_set(reg, REG01);
+ val &= ~REG01_SCAN;
+ sanei_genesys_set_reg_from_set(reg, REG01, val);
+ SANE_Status ret = sanei_genesys_write_register(dev, REG01, val);
+ sanei_genesys_sleep_ms(100);
+ return ret;
+}
+
+static SANE_Status
+gl843_stop_action (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val40, val;
+ unsigned int loop;
+
+ DBG(DBG_proc, "%s\n", __func__);
+
+ status = sanei_genesys_get_status (dev, &val);
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ val40 = 0;
+ 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));
+ DBG(DBG_proc, "%s: completed\n", __func__);
+ return status;
+ }
+
+ /* only stop action if needed */
+ if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG))
+ {
+ DBG(DBG_info, "%s: already stopped\n", __func__);
+ DBG(DBG_proc, "%s: completed\n", __func__);
+ return SANE_STATUS_GOOD;
+ }
+
+ /* ends scan 646 */
+ val = dev->reg.get8(REG01);
+ val &= ~REG01_SCAN;
+ dev->reg.set8(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);
+ }
+ val40 = 0;
+ status = sanei_genesys_read_register (dev, 0x40, &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;
+}
+
+static SANE_Status
+gl843_get_paper_sensor (Genesys_Device * dev, SANE_Bool * paper_loaded)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+
+ status = sanei_genesys_read_register (dev, REG6D, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to read gpio: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+ *paper_loaded = (val & 0x1) == 0;
+ return SANE_STATUS_GOOD;
+
+ return SANE_STATUS_INVAL;
+}
+
+static SANE_Status
+gl843_eject_document (Genesys_Device * dev)
+{
+ DBG(DBG_proc, "%s: not implemented \n", __func__);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+ return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+gl843_load_document (Genesys_Device * dev)
+{
+ DBG(DBG_proc, "%s: not implemented \n", __func__);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * detects end of document and adjust current scan
+ * to take it into account
+ * used by sheetfed scanners
+ */
+static SANE_Status
+gl843_detect_document_end (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ SANE_Bool paper_loaded;
+ unsigned int scancnt = 0;
+ int flines, channels, depth, bytes_remain, sublines,
+ bytes_to_flush, lines, sub_bytes, tmp, read_bytes_left;
+ DBG(DBG_proc, "%s: begin\n", __func__);
+
+ RIE (gl843_get_paper_sensor (dev, &paper_loaded));
+
+ /* sheetfed scanner uses home sensor as paper present */
+ if ((dev->document == SANE_TRUE) && !paper_loaded)
+ {
+ DBG(DBG_info, "%s: no more document\n", __func__);
+ dev->document = SANE_FALSE;
+
+ channels = dev->current_setup.channels;
+ depth = dev->current_setup.depth;
+ read_bytes_left = (int) dev->read_bytes_left;
+ DBG(DBG_io, "%s: read_bytes_left=%d\n", __func__, read_bytes_left);
+
+ /* get lines read */
+ try {
+ status = sanei_genesys_read_scancnt(dev, &scancnt);
+ } catch (...) {
+ flines = 0;
+ }
+ if (status != SANE_STATUS_GOOD)
+ {
+ flines = 0;
+ }
+ else
+ {
+ /* compute number of line read */
+ tmp = (int) dev->total_bytes_read;
+ if (depth == 1 || dev->settings.scan_mode == ScanColorMode::LINEART)
+ flines = tmp * 8 / dev->settings.pixels / channels;
+ else
+ flines = tmp / (depth / 8) / dev->settings.pixels / channels;
+
+ /* number of scanned lines, but no read yet */
+ flines = scancnt - flines;
+
+ DBG(DBG_io, "%s: %d scanned but not read lines\n", __func__, flines);
+ }
+
+ /* adjust number of bytes to read
+ * we need to read the final bytes which are word per line * number of last lines
+ * to have doc leaving feeder */
+ lines =
+ (SANE_UNFIX (dev->model->post_scan) * dev->current_setup.yres) /
+ MM_PER_INCH + flines;
+ DBG(DBG_io, "%s: adding %d line to flush\n", __func__, lines);
+
+ /* number of bytes to read from scanner to get document out of it after
+ * end of document dectected by hardware sensor */
+ bytes_to_flush = lines * dev->wpl;
+
+ /* if we are already close to end of scan, flushing isn't needed */
+ if (bytes_to_flush < read_bytes_left)
+ {
+ /* we take all these step to work around an overflow on some plateforms */
+ tmp = (int) dev->total_bytes_read;
+ DBG (DBG_io, "%s: tmp=%d\n", __func__, tmp);
+ bytes_remain = (int) dev->total_bytes_to_read;
+ DBG(DBG_io, "%s: bytes_remain=%d\n", __func__, bytes_remain);
+ bytes_remain = bytes_remain - tmp;
+ DBG(DBG_io, "%s: bytes_remain=%d\n", __func__, bytes_remain);
+
+ /* remaining lines to read by frontend for the current scan */
+ if (depth == 1 || dev->settings.scan_mode == ScanColorMode::LINEART)
+ {
+ flines = bytes_remain * 8 / dev->settings.pixels / channels;
+ }
+ else
+ flines = bytes_remain / (depth / 8)
+ / dev->settings.pixels / channels;
+ DBG(DBG_io, "%s: flines=%d\n", __func__, flines);
+
+ if (flines > lines)
+ {
+ /* change the value controlling communication with the frontend :
+ * total bytes to read is current value plus the number of remaining lines
+ * multiplied by bytes per line */
+ sublines = flines - lines;
+
+ if (depth == 1 || dev->settings.scan_mode == ScanColorMode::LINEART)
+ sub_bytes =
+ ((dev->settings.pixels * sublines) / 8 +
+ (((dev->settings.pixels * sublines) % 8) ? 1 : 0)) *
+ channels;
+ else
+ sub_bytes =
+ dev->settings.pixels * sublines * channels * (depth / 8);
+
+ dev->total_bytes_to_read -= sub_bytes;
+
+ /* then adjust the physical bytes to read */
+ if (read_bytes_left > sub_bytes)
+ {
+ dev->read_bytes_left -= sub_bytes;
+ }
+ else
+ {
+ dev->total_bytes_to_read = dev->total_bytes_read;
+ dev->read_bytes_left = 0;
+ }
+
+ DBG(DBG_io, "%s: sublines=%d\n", __func__, sublines);
+ DBG(DBG_io, "%s: subbytes=%d\n", __func__, sub_bytes);
+ DBG(DBG_io, "%s: total_bytes_to_read=%lu\n", __func__,
+ (unsigned long) dev->total_bytes_to_read);
+ DBG(DBG_io, "%s: read_bytes_left=%d\n", __func__, read_bytes_left);
+ }
+ }
+ else
+ {
+ DBG(DBG_io, "%s: no flushing needed\n", __func__);
+ }
+ }
+
+ DBG(DBG_proc, "%s: finished\n", __func__);
+ return SANE_STATUS_GOOD;
+}
+
+// enables or disables XPA slider motor
+static SANE_Status gl843_set_xpa_motor_power(Genesys_Device *dev, bool set)
+{
+ uint8_t val;
+ SANE_Status status=SANE_STATUS_GOOD;
+
+ DBGSTART;
+
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F) {
+
+ if (set) {
+ RIE(sanei_genesys_read_register(dev, REG6C, &val));
+ val &= ~REG6C_GPIO14;
+ if (dev->current_setup.xres >= 2400) {
+ val |= REG6C_GPIO10;
+ }
+ RIE(sanei_genesys_write_register(dev, REG6C, val));
+
+ RIE(sanei_genesys_read_register(dev, REGA6, &val));
+ val |= REGA6_GPIO17;
+ RIE(sanei_genesys_write_register(dev, REGA6,val));
+ } else {
+ RIE(sanei_genesys_read_register(dev, REG6C, &val));
+ val |= REG6C_GPIO14;
+ val &= ~REG6C_GPIO10;
+ RIE(sanei_genesys_write_register(dev, REG6C, val));
+
+ RIE(sanei_genesys_read_register(dev, REGA6, &val));
+ val &= ~REGA6_GPIO17;
+ RIE(sanei_genesys_write_register(dev, REGA6,val));
+ }
+ DBGCOMPLETED;
+ return status;
+ }
+
+ if (dev->model->model_id == MODEL_HP_SCANJET_G4050) {
+
+ if (set) {
+ /* set MULTFILM et GPOADF */
+ RIE (sanei_genesys_read_register (dev, REG6B, &val));
+ val |=REG6B_MULTFILM|REG6B_GPOADF;
+ RIE (sanei_genesys_write_register (dev, REG6B, val));
+
+ RIE (sanei_genesys_read_register (dev, REG6C, &val));
+ val &= ~REG6C_GPIO15;
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+
+ /* Motor power ? No move at all without this one */
+ RIE (sanei_genesys_read_register (dev, REGA6, &val));
+ val |= REGA6_GPIO20;
+ RIE (sanei_genesys_write_register(dev,REGA6,val));
+
+ RIE (sanei_genesys_read_register (dev, REGA8, &val));
+ val &= ~REGA8_GPO27;
+ RIE (sanei_genesys_write_register (dev, REGA8, val));
+
+ RIE (sanei_genesys_read_register (dev, REGA9, &val));
+ val |= REGA9_GPO32|REGA9_GPO31;
+ RIE (sanei_genesys_write_register (dev, REGA9, val));
+ } else {
+ /* unset GPOADF */
+ RIE (sanei_genesys_read_register (dev, REG6B, &val));
+ val &= ~REG6B_GPOADF;
+ RIE (sanei_genesys_write_register (dev, REG6B, val));
+
+ RIE (sanei_genesys_read_register (dev, REGA8, &val));
+ val |= REGA8_GPO27;
+ RIE (sanei_genesys_write_register (dev, REGA8, val));
+
+ RIE (sanei_genesys_read_register (dev, REGA9, &val));
+ val &= ~REGA9_GPO31;
+ RIE (sanei_genesys_write_register (dev, REGA9, val));
+ }
+ DBGCOMPLETED;
+ return status;
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/** @brief light XPA lamp
+ * toggle gpios to switch off regular lamp and light on the
+ * XPA light
+ * @param dev device to set up
+ */
+static SANE_Status gl843_set_xpa_lamp_power(Genesys_Device *dev, bool set)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val = 0;
+ DBGSTART;
+
+ if (set) {
+ RIE(sanei_genesys_read_register(dev, REGA6, &val));
+
+ // cut regular lamp power
+ val &= ~(REGA6_GPIO24 | REGA6_GPIO23);
+
+ // set XPA lamp power
+ val |= REGA6_GPIO22 | REGA6_GPIO21 | REGA6_GPIO19;
+
+ RIE(sanei_genesys_write_register(dev, REGA6, val));
+
+ RIE(sanei_genesys_read_register(dev, REGA7, &val));
+ val|=REGA7_GPOE24; /* lamp 1 off GPOE 24 */
+ val|=REGA7_GPOE23; /* lamp 2 off GPOE 23 */
+ val|=REGA7_GPOE22; /* full XPA lamp power */
+ RIE(sanei_genesys_write_register(dev, REGA7, val));
+ } else {
+ RIE(sanei_genesys_read_register(dev, REGA6, &val));
+
+ // switch on regular lamp
+ val |= REGA6_GPIO23;
+
+ // no XPA lamp power (2 bits for level: __11 ____)
+ val &= ~(REGA6_GPIO22 | REGA6_GPIO21);
+
+ RIE(sanei_genesys_write_register(dev, REGA6, val));
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/* Send the low-level scan command */
+static SANE_Status
+gl843_begin_scan (Genesys_Device * dev, const Genesys_Sensor& sensor, Genesys_Register_Set * reg,
+ SANE_Bool start_motor)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+ uint16_t dpiset, dpihw;
+
+ DBGSTART;
+
+ /* get back the target dpihw */
+ sanei_genesys_get_double (reg, REG_DPISET, &dpiset);
+ dpihw = sanei_genesys_compute_dpihw(dev, sensor, dpiset);
+
+ /* set up GPIO for scan */
+ switch(dev->model->gpo_type)
+ {
+ /* KV case */
+ case GPO_KVSS080:
+ RIE (sanei_genesys_write_register (dev, REGA9, 0x00));
+ RIE (sanei_genesys_write_register (dev, REGA6, 0xf6));
+ /* blinking led */
+ RIE (sanei_genesys_write_register (dev, 0x7e, 0x04));
+ break;
+ case GPO_G4050:
+ RIE (sanei_genesys_write_register (dev, REGA7, 0xfe));
+ RIE (sanei_genesys_write_register (dev, REGA8, 0x3e));
+ RIE (sanei_genesys_write_register (dev, REGA9, 0x06));
+ switch (dpihw)
+ {
+ case 1200:
+ case 2400:
+ case 4800:
+ RIE (sanei_genesys_write_register (dev, REG6C, 0x60));
+ RIE (sanei_genesys_write_register (dev, REGA6, 0x46));
+ break;
+ default: /* 600 dpi case */
+ RIE (sanei_genesys_write_register (dev, REG6C, 0x20));
+ RIE (sanei_genesys_write_register (dev, REGA6, 0x44));
+ }
+
+ if (reg->state.is_xpa_on && reg->state.is_lamp_on) {
+ RIE(gl843_set_xpa_lamp_power(dev, true));
+ }
+
+ if (reg->state.is_xpa_on) {
+ dev->needs_home_ta = SANE_TRUE;
+ RIE(gl843_set_xpa_motor_power(dev, true));
+ }
+
+ /* blinking led */
+ RIE (sanei_genesys_write_register (dev, REG7E, 0x01));
+ break;
+ case GPO_CS8600F:
+ if (reg->state.is_xpa_on) {
+ dev->needs_home_ta = SANE_TRUE;
+ RIE(gl843_set_xpa_motor_power(dev, true));
+ }
+ break;
+ case GPO_CS4400F:
+ case GPO_CS8400F:
+ default:
+ break;
+ }
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register
+ (dev, REG0D, REG0D_CLRLNCNT | REG0D_CLRMCNT));
+
+ /* enable scan and motor */
+ RIE (sanei_genesys_read_register (dev, REG01, &val));
+ val |= REG01_SCAN;
+ RIE (sanei_genesys_write_register (dev, REG01, 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
+gl843_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;
+
+ /* post scan gpio */
+ RIE(sanei_genesys_write_register(dev,0x7e,0x00));
+
+ // turn off XPA lamp if needed
+ // BUG: the if condition below probably shouldn't be enabled when XPA is off
+ if (reg->state.is_xpa_on || reg->state.is_lamp_on) {
+ gl843_set_xpa_lamp_power(dev, false);
+ }
+
+ if (dev->model->is_sheetfed == SANE_TRUE)
+ {
+ status = SANE_STATUS_GOOD;
+ }
+ else /* flat bed scanners */
+ {
+ status = gl843_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;
+}
+
+/** @brief park XPA lamp
+ * park the XPA lamp if needed
+ */
+static SANE_Status gl843_park_xpa_lamp (Genesys_Device * dev)
+{
+ Genesys_Register_Set local_reg;
+ SANE_Status status = SANE_STATUS_GOOD;
+ GenesysRegister *r;
+ uint8_t val;
+ int loop = 0;
+
+ DBGSTART;
+
+ /* copy scan settings */
+ local_reg = dev->reg;
+
+ /* set a huge feedl and reverse direction */
+ sanei_genesys_set_triple(&local_reg,REG_FEEDL,0xbdcd);
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT | REG0D_CLRMCNT));
+
+ /* set up for reverse and no scan */
+ r = sanei_genesys_get_address (&local_reg, REG02);
+ r->value |= REG02_MTRREV;
+ r = sanei_genesys_get_address (&local_reg, REG01);
+ r->value &= ~REG01_SCAN;
+
+ /* write to scanner and start action */
+ RIE (dev->model->cmd_set->bulk_write_register(dev, local_reg));
+ RIE(gl843_set_xpa_motor_power(dev, true));
+ try {
+ status = gl843_start_action (dev);
+ } catch (...) {
+ DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status));
+ try {
+ gl843_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));
+ gl843_stop_action (dev);
+ /* restore original registers */
+ dev->model->cmd_set->bulk_write_register(dev, dev->reg);
+ return status;
+ }
+
+ while (loop < 600) /* do not wait longer then 60 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 (DBG_LEVEL >= DBG_io2)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ if (val & REG41_HOMESNR) /* home sensor */
+ {
+ DBG(DBG_info, "%s: reached home position\n", __func__);
+ DBG(DBG_proc, "%s: finished\n", __func__);
+
+ gl843_set_xpa_motor_power(dev, false);
+ dev->needs_home_ta = SANE_FALSE;
+
+ return SANE_STATUS_GOOD;
+ }
+ sanei_genesys_sleep_ms(100);
+ ++loop;
+ }
+
+ /* we are not parked here.... should we fail ? */
+ DBG(DBG_info, "%s: XPA lamp is not parked\n", __func__);
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief Moves the slider to the home (top) position slowly
+ * */
+static SANE_Status
+gl843_slow_back_home (Genesys_Device * dev, SANE_Bool wait_until_home)
+{
+ Genesys_Register_Set local_reg;
+ SANE_Status status = SANE_STATUS_GOOD;
+ GenesysRegister *r;
+ uint8_t val;
+ float resolution;
+ int loop = 0;
+
+ DBG(DBG_proc, "%s (wait_until_home = %d)\n", __func__, wait_until_home);
+
+ if (dev->needs_home_ta) {
+ RIE(gl843_park_xpa_lamp(dev));
+ }
+
+ /* regular slow back home */
+ dev->scanhead_position_in_steps = 0;
+
+ /* 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;
+ }
+ 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);
+ }
+ if (val & HOMESNR) /* is sensor at home? */
+ {
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ local_reg = dev->reg;
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+
+ const auto& sensor = sanei_genesys_find_sensor(dev, resolution);
+
+ ScanSession session;
+ session.params.xres = resolution;
+ session.params.yres = resolution;
+ session.params.startx = 100;
+ session.params.starty = 40000;
+ session.params.pixels = 100;
+ session.params.lines = 100;
+ session.params.depth = 8;
+ session.params.channels = 1;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = ScanColorMode::LINEART;
+ session.params.color_filter = dev->settings.color_filter;
+ session.params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+ gl843_compute_session(dev, session, sensor);
+
+ status = gl843_init_scan_regs(dev, sensor, &local_reg, session);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to set up registers: %s\n", __func__, sane_strstatus(status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT | REG0D_CLRMCNT));
+
+ /* set up for reverse and no scan */
+ r = sanei_genesys_get_address(&local_reg, REG02);
+ r->value |= REG02_MTRREV;
+ r = sanei_genesys_get_address(&local_reg, REG01);
+ r->value &= ~REG01_SCAN;
+
+ RIE (dev->model->cmd_set->bulk_write_register(dev, local_reg));
+
+ try {
+ status = gl843_start_action (dev);
+ } catch (...) {
+ DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status));
+ try {
+ gl843_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));
+ gl843_stop_action (dev);
+ /* restore original registers */
+ dev->model->cmd_set->bulk_write_register(dev, dev->reg);
+ return status;
+ }
+
+ 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 (DBG_LEVEL >= DBG_io2)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ if (val & REG41_HOMESNR) /* home sensor */
+ {
+ DBG(DBG_info, "%s: reached home position\n", __func__);
+ DBG(DBG_proc, "%s: finished\n", __func__);
+ 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 */
+ gl843_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
+gl843_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);
+
+ ScanSession session;
+ session.params.xres = dpi;
+ session.params.yres = dpi;
+ session.params.startx = 0;
+ session.params.starty = 0; // we should give a small offset here - ~60 steps
+ session.params.pixels = 600;
+ session.params.lines = dev->model->search_lines;
+ session.params.depth = 8;
+ session.params.channels = 1;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = ScanColorMode::GRAY;
+ session.params.color_filter = ColorFilter::GREEN;
+ session.params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE |
+ SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE;
+ gl843_compute_session(dev, session, sensor);
+
+ status = gl843_init_scan_regs(dev, sensor, &local_reg, session);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to bulk setup registers: %s\n", __func__, sane_strstatus(status));
+ 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));
+ return status;
+ }
+
+ size = dev->read_bytes_left;
+
+ std::vector<uint8_t> data(size);
+
+ status = gl843_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;
+ }
+ RIE(gl843_stop_action_no_move(dev, &local_reg));
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file("gl843_search_position.pnm", data.data(), 8, 1, pixels,
+ dev->model->search_lines);
+
+ status = gl843_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;
+
+ 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
+gl843_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;
+
+ DBGSTART;
+ 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;
+
+ int flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ if (dev->settings.scan_method == ScanMethod::TRANSPARENCY) {
+ flags |= SCAN_FLAG_USE_XPA;
+ }
+
+ ScanSession session;
+ session.params.xres = dev->settings.xres;
+ session.params.yres = dev->settings.yres;
+ session.params.startx = 0;
+ session.params.starty = 0;
+ session.params.pixels = sensor.optical_res / cksel; // XXX STEF XXX dpi instead of pixels!
+ session.params.lines = 20;
+ session.params.depth = 16;
+ session.params.channels = channels;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = dev->settings.scan_mode;
+ session.params.color_filter = dev->settings.color_filter;
+ session.params.flags = flags;
+ gl843_compute_session(dev, session, sensor);
+
+ status = gl843_init_scan_regs(dev, sensor, &regs, session);
+
+ 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);
+
+ 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
+ * */
+static SANE_Status
+gl843_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;
+
+ /* prepare local registers */
+ local_reg = dev->reg;
+
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+
+ const auto& sensor = sanei_genesys_find_sensor(dev, resolution);
+
+ ScanSession session;
+ session.params.xres = resolution;
+ session.params.yres = resolution;
+ session.params.startx = 0;
+ session.params.starty = steps;
+ session.params.pixels = 100;
+ session.params.lines = 3;
+ session.params.depth = 8;
+ session.params.channels = 3;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ session.params.color_filter = ColorFilter::RED;
+ session.params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_FEEDING |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+ gl843_compute_session(dev, session, sensor);
+
+ status = gl843_init_scan_regs(dev, sensor, &local_reg, session);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to set up registers: %s\n", __func__, sane_strstatus(status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* 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 = gl843_start_action (dev);
+ } catch (...) {
+ DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status));
+ try {
+ gl843_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));
+ gl843_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));
+
+ // looks like the scanner locks up if we scan immediately after feeding
+ sanei_genesys_sleep_ms(100);
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status gl843_move_to_ta (Genesys_Device * dev);
+
+/* init registers for shading calibration */
+/* shading calibration is done at dpihw */
+static SANE_Status
+gl843_init_regs_for_shading(Genesys_Device * dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set& regs)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int move, resolution, dpihw, factor;
+ uint16_t strpixel;
+
+ DBGSTART;
+
+ /* initial calibration reg values */
+ regs = dev->reg;
+
+ dev->calib_channels = 3;
+ if (dev->settings.scan_method == ScanMethod::TRANSPARENCY)
+ dev->calib_lines = dev->model->shading_ta_lines;
+ else
+ dev->calib_lines = dev->model->shading_lines;
+ dpihw = sanei_genesys_compute_dpihw_calibration(dev, sensor, dev->settings.xres);
+ factor=sensor.optical_res/dpihw;
+ resolution=dpihw;
+
+ const auto& calib_sensor = sanei_genesys_find_sensor(dev, resolution,
+ dev->settings.scan_method);
+
+ if (dev->settings.scan_method == ScanMethod::TRANSPARENCY &&
+ dev->model->model_id == MODEL_CANON_CANOSCAN_8600F &&
+ dev->settings.xres == 4800)
+ {
+ float offset = SANE_UNFIX(dev->model->x_offset_ta);
+ offset /= calib_sensor.get_ccd_size_divisor_for_dpi(resolution);
+ offset = (offset * calib_sensor.optical_res) / MM_PER_INCH;
+
+ unsigned size = SANE_UNFIX(dev->model->x_size_ta);
+ size /= calib_sensor.get_ccd_size_divisor_for_dpi(resolution);
+ size = (size * calib_sensor.optical_res) / MM_PER_INCH;
+
+ dev->calib_pixels_offset = offset;
+ dev->calib_pixels = size;
+ }
+ else
+ {
+ dev->calib_pixels_offset = 0;
+ dev->calib_pixels = calib_sensor.sensor_pixels / factor;
+ }
+
+ dev->calib_resolution = resolution;
+
+ int flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ if (dev->settings.scan_method == ScanMethod::TRANSPARENCY)
+ {
+ // note: move_to_ta() function has already been called and the sensor is at the
+ // transparency adapter
+ move = 0; // already at dev->model->y_offset_calib_ta implicitly
+ flags |= SCAN_FLAG_USE_XPA;
+ }
+ else
+ move = SANE_UNFIX(dev->model->y_offset_calib);
+
+ move = (move * resolution) / MM_PER_INCH;
+
+ ScanSession session;
+ session.params.xres = resolution;
+ session.params.yres = resolution;
+ session.params.startx = dev->calib_pixels_offset;
+ session.params.starty = move;
+ session.params.pixels = dev->calib_pixels;
+ session.params.lines = dev->calib_lines;
+ session.params.depth = 16;
+ session.params.channels = dev->calib_channels;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = dev->settings.scan_mode;
+ session.params.color_filter = dev->settings.color_filter;
+ session.params.flags = flags;
+ gl843_compute_session(dev, session, calib_sensor);
+
+ status = gl843_init_scan_regs(dev, calib_sensor, &regs, session);
+
+ // the pixel number may be updated to conform to scanner constraints
+ dev->calib_pixels = dev->current_setup.pixels;
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ dev->calib_total_bytes_to_read = dev->read_bytes_left;
+
+ dev->scanhead_position_in_steps += dev->calib_lines + move;
+ sanei_genesys_get_double(&regs,REG_STRPIXEL,&strpixel);
+ DBG(DBG_info, "%s: STRPIXEL=%d\n", __func__, strpixel);
+
+ 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 set up registers for the actual scan
+ */
+static SANE_Status
+gl843_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;
+
+ move_dpi = dev->motor.base_ydpi;
+
+ flags = 0;
+ if (dev->settings.scan_method == ScanMethod::TRANSPARENCY)
+ {
+ // note: move_to_ta() function has already been called and the sensor is at the
+ // transparency adapter
+ move = SANE_UNFIX(dev->model->y_offset_ta) - SANE_UNFIX(dev->model->y_offset_calib_ta);
+ flags |= SCAN_FLAG_USE_XPA;
+ }
+ else
+ move = SANE_UNFIX(dev->model->y_offset);
+
+ move += dev->settings.tl_y;
+ move = (move * move_dpi) / MM_PER_INCH;
+ DBG(DBG_info, "%s: move=%f steps\n", __func__, move);
+
+ /* start */
+ if(dev->settings.scan_method==ScanMethod::TRANSPARENCY)
+ start = SANE_UNFIX (dev->model->x_offset_ta);
+ else
+ start = SANE_UNFIX (dev->model->x_offset);
+
+ start /= sensor.get_ccd_size_divisor_for_dpi(dev->settings.xres);
+ start += dev->settings.tl_x;
+ start = (start * sensor.optical_res) / MM_PER_INCH;
+
+ /* enable emulated lineart from gray data */
+ if(dev->settings.scan_mode == ScanColorMode::LINEART
+ && dev->settings.dynamic_lineart)
+ {
+ flags |= SCAN_FLAG_DYNAMIC_LINEART;
+ }
+
+ ScanSession session;
+ session.params.xres = dev->settings.xres;
+ session.params.yres = dev->settings.yres;
+ session.params.startx = start;
+ session.params.starty = move;
+ session.params.pixels = dev->settings.pixels;
+ session.params.lines = dev->settings.lines;
+ session.params.depth = depth;
+ session.params.channels = channels;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = dev->settings.scan_mode;
+ session.params.color_filter = dev->settings.color_filter;
+ session.params.flags = flags;
+ gl843_compute_session(dev, session, sensor);
+
+ status = gl843_init_scan_regs(dev, sensor, &dev->reg, session);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * This function sends gamma tables to ASIC
+ */
+static SANE_Status
+gl843_send_gamma_table(Genesys_Device* dev, const Genesys_Sensor& sensor)
+{
+ int size;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int i;
+
+ DBGSTART;
+
+ size = 256;
+
+ /* allocate temporary gamma tables: 16 bits words, 3 channels */
+ std::vector<uint8_t> gamma(size * 2 * 3);
+
+ std::vector<uint16_t> rgamma = get_gamma_table(dev, sensor, GENESYS_RED);
+ std::vector<uint16_t> ggamma = get_gamma_table(dev, sensor, GENESYS_GREEN);
+ std::vector<uint16_t> bgamma = get_gamma_table(dev, sensor, GENESYS_BLUE);
+
+ // copy sensor specific's gamma tables
+ for (i = 0; i < size; i++) {
+ gamma[i * 2 + size * 0 + 0] = rgamma[i] & 0xff;
+ gamma[i * 2 + size * 0 + 1] = (rgamma[i] >> 8) & 0xff;
+ gamma[i * 2 + size * 2 + 0] = ggamma[i] & 0xff;
+ gamma[i * 2 + size * 2 + 1] = (ggamma[i] >> 8) & 0xff;
+ gamma[i * 2 + size * 4 + 0] = bgamma[i] & 0xff;
+ gamma[i * 2 + size * 4 + 1] = (bgamma[i] >> 8) & 0xff;
+ }
+
+ /* send address */
+ status = gl843_set_buffer_address (dev, 0x0000);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to set buffer address: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ /* send data */
+ status = sanei_genesys_bulk_write_data(dev, 0x28, gamma.data(), size * 2 * 3);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to send gamma table: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ DBG(DBG_proc, "%s: completed\n", __func__);
+ return SANE_STATUS_GOOD;
+}
+
+/* this function does the led calibration by scanning one line of the calibration
+ area below scanner's top on white strip.
+
+-needs working coarse/gain
+*/
+static SANE_Status
+gl843_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], avga, avge;
+ int turn;
+ uint16_t expr, expg, expb;
+
+ SANE_Bool acceptable = SANE_FALSE;
+
+ DBG(DBG_proc, "%s\n", __func__);
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+ depth = 16;
+ used_res = sensor.optical_res;
+
+ auto& calib_sensor = sanei_genesys_find_sensor_for_write(dev, used_res,
+ dev->settings.scan_method);
+ num_pixels =
+ (calib_sensor.sensor_pixels * used_res) / calib_sensor.optical_res;
+
+ /* initial calibration reg values */
+ regs = dev->reg;
+
+ ScanSession session;
+ session.params.xres = used_res;
+ session.params.yres = dev->motor.base_ydpi;
+ session.params.startx = 0;
+ session.params.starty = 0;
+ session.params.pixels = num_pixels;
+ session.params.lines = 1;
+ session.params.depth = depth;
+ session.params.channels = channels;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ session.params.color_filter = dev->settings.color_filter;
+ session.params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+ gl843_compute_session(dev, session, calib_sensor);
+
+ status = gl843_init_scan_regs(dev, calib_sensor, &regs, session);
+
+ 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 = dev->read_bytes_left;
+
+ std::vector<uint8_t> line(total_size);
+
+/*
+ we try to get equal bright leds here:
+
+ loop:
+ average per color
+ adjust exposure times
+ */
+
+ expr = calib_sensor.exposure.red;
+ expg = calib_sensor.exposure.green;
+ expb = calib_sensor.exposure.blue;
+
+ turn = 0;
+
+ do
+ {
+
+ calib_sensor.exposure.red = expr;
+ calib_sensor.exposure.green = expg;
+ calib_sensor.exposure.blue = expb;
+
+ sanei_genesys_set_exposure(regs, calib_sensor.exposure);
+
+ RIE(dev->model->cmd_set->bulk_write_register(dev, regs));
+
+ DBG(DBG_info, "%s: starting first line reading\n", __func__);
+ RIE (gl843_begin_scan(dev, calib_sensor, &regs, SANE_TRUE));
+ RIE (sanei_genesys_read_data_from_scanner(dev, line.data(), total_size));
+ RIE(gl843_stop_action_no_move(dev, &regs));
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ char fn[30];
+ snprintf(fn, 30, "gl843_led_%02d.pnm", turn);
+ sanei_genesys_write_pnm_file(fn, line.data(), depth, channels, num_pixels, 1);
+ }
+
+ acceptable = SANE_TRUE;
+
+ for (j = 0; j < channels; j++)
+ {
+ avg[j] = 0;
+ for (i = 0; i < num_pixels; i++)
+ {
+ if (dev->model->is_cis)
+ val =
+ line[i * 2 + j * 2 * num_pixels + 1] * 256 +
+ line[i * 2 + j * 2 * num_pixels];
+ else
+ val =
+ line[i * 2 * channels + 2 * j + 1] * 256 +
+ line[i * 2 * channels + 2 * j];
+ avg[j] += val;
+ }
+
+ avg[j] /= num_pixels;
+ }
+
+ DBG(DBG_info, "%s: average: %d,%d,%d\n", __func__, avg[0], avg[1], avg[2]);
+
+ acceptable = SANE_TRUE;
+
+ if (avg[0] < avg[1] * 0.95 || avg[1] < avg[0] * 0.95 ||
+ avg[0] < avg[2] * 0.95 || avg[2] < avg[0] * 0.95 ||
+ avg[1] < avg[2] * 0.95 || avg[2] < avg[1] * 0.95)
+ acceptable = SANE_FALSE;
+
+ if (!acceptable)
+ {
+ avga = (avg[0] + avg[1] + avg[2]) / 3;
+ expr = (expr * avga) / avg[0];
+ expg = (expg * avga) / avg[1];
+ expb = (expb * avga) / avg[2];
+/*
+ keep the resulting exposures below this value.
+ too long exposure drives the ccd into saturation.
+ we may fix this by relying on the fact that
+ we get a striped scan without shading, by means of
+ statistical calculation
+*/
+ avge = (expr + expg + expb) / 3;
+
+ /* don't overflow max exposure */
+ if (avge > 3000)
+ {
+ expr = (expr * 2000) / avge;
+ expg = (expg * 2000) / avge;
+ expb = (expb * 2000) / avge;
+ }
+ if (avge < 50)
+ {
+ expr = (expr * 50) / avge;
+ expg = (expg * 50) / avge;
+ expb = (expb * 50) / avge;
+ }
+
+ }
+
+ RIE (gl843_stop_action (dev));
+
+ turn++;
+
+ }
+ while (!acceptable && turn < 100);
+
+ DBG(DBG_info, "%s: acceptable exposure: %d,%d,%d\n", __func__, expr, expg, expb);
+
+ sensor.exposure = calib_sensor.exposure;
+
+ gl843_slow_back_home (dev, SANE_TRUE);
+
+ DBG(DBG_proc, "%s: completed\n", __func__);
+ return status;
+}
+
+
+
+/**
+ * average dark pixels of a 8 bits scan of a given channel
+ */
+static int
+dark_average_channel (uint8_t * data, unsigned int pixels, unsigned int lines,
+ unsigned int channels, unsigned int black, int channel)
+{
+ unsigned int i, j, k, count;
+ unsigned int avg[3];
+ uint8_t val;
+
+ /* computes average values on black margin */
+ for (k = 0; k < channels; k++)
+ {
+ avg[k] = 0;
+ count = 0;
+ // FIXME: start with the second line because the black pixels often have noise on the first
+ // line; the cause is probably incorrectly cleaned up previous scan
+ for (i = 1; i < lines; i++)
+ {
+ for (j = 0; j < black; j++)
+ {
+ val = data[i * channels * pixels + j*channels + k];
+ avg[k] += val;
+ count++;
+ }
+ }
+ if (count)
+ avg[k] /= count;
+ DBG(DBG_info, "%s: avg[%d] = %d\n", __func__, k, avg[k]);
+ }
+ DBG(DBG_info, "%s: average = %d\n", __func__, avg[channel]);
+ return avg[channel];
+}
+
+/** @brief calibrate AFE offset
+ * Iterate doing scans at target dpi until AFE offset if correct. One
+ * color line is scanned at a time. Scanning head doesn't move.
+ * @param dev device to calibrate
+ */
+static SANE_Status
+gl843_offset_calibration(Genesys_Device * dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set& regs)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ unsigned int channels, bpp;
+ int pass, total_size, i, resolution, lines;
+ int topavg[3], bottomavg[3], avg[3];
+ int top[3], bottom[3], black_pixels, pixels, factor, dpihw;
+
+ DBGSTART;
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+ lines = 8;
+ bpp = 8;
+
+ /* compute divider factor to compute final pixels number */
+ dpihw = sanei_genesys_compute_dpihw_calibration(dev, sensor, dev->settings.xres);
+ factor = sensor.optical_res / dpihw;
+ resolution = dpihw;
+
+ const auto& calib_sensor = sanei_genesys_find_sensor(dev, resolution,
+ dev->settings.scan_method);
+
+ int target_pixels = calib_sensor.sensor_pixels / factor;
+ int start_pixel = 0;
+ black_pixels = calib_sensor.black_pixels / factor;
+
+ if (dev->settings.scan_method == ScanMethod::TRANSPARENCY &&
+ dev->model->model_id == MODEL_CANON_CANOSCAN_8600F &&
+ dev->settings.xres == 4800)
+ {
+ start_pixel = SANE_UNFIX(dev->model->x_offset_ta);
+ start_pixel /= calib_sensor.get_ccd_size_divisor_for_dpi(resolution);
+ start_pixel = (start_pixel * calib_sensor.optical_res) / MM_PER_INCH;
+
+ target_pixels = SANE_UNFIX(dev->model->x_size_ta);
+ target_pixels /= calib_sensor.get_ccd_size_divisor_for_dpi(resolution);
+ target_pixels = (target_pixels * calib_sensor.optical_res) / MM_PER_INCH;
+ }
+
+ int flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ if (dev->settings.scan_method == ScanMethod::TRANSPARENCY)
+ {
+ flags |= SCAN_FLAG_USE_XPA;
+ }
+
+ ScanSession session;
+ session.params.xres = resolution;
+ session.params.yres = resolution;
+ session.params.startx = start_pixel;
+ session.params.starty = 0;
+ session.params.pixels = target_pixels;
+ session.params.lines = lines;
+ session.params.depth = bpp;
+ session.params.channels = channels;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ session.params.color_filter = ColorFilter::RED;
+ session.params.flags = flags;
+ gl843_compute_session(dev, session, calib_sensor);
+ pixels = session.output_pixels;
+
+ DBG(DBG_io, "%s: dpihw =%d\n", __func__, dpihw);
+ DBG(DBG_io, "%s: factor =%d\n", __func__, factor);
+ DBG(DBG_io, "%s: resolution =%d\n", __func__, resolution);
+ DBG(DBG_io, "%s: pixels =%d\n", __func__, pixels);
+ DBG(DBG_io, "%s: black_pixels=%d\n", __func__, black_pixels);
+ status = gl843_init_scan_regs(dev, calib_sensor, &regs, session);
+ 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 = dev->read_bytes_left;
+
+ std::vector<uint8_t> first_line(total_size);
+ std::vector<uint8_t> second_line(total_size);
+
+ /* init gain and offset */
+ for (i = 0; i < 3; i++)
+ {
+ bottom[i] = 10;
+ dev->frontend.set_offset(i, bottom[i]);
+ dev->frontend.set_gain(i, 0);
+ }
+ RIE(gl843_set_fe(dev, calib_sensor, AFE_SET));
+
+ /* scan with obttom AFE settings */
+ RIE(dev->model->cmd_set->bulk_write_register(dev, regs));
+ DBG(DBG_info, "%s: starting first line reading\n", __func__);
+ RIE(gl843_begin_scan(dev, calib_sensor, &regs, SANE_TRUE));
+ RIE(sanei_genesys_read_data_from_scanner(dev, first_line.data(), total_size));
+ RIE(gl843_stop_action_no_move(dev, &regs));
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ char fn[40];
+ snprintf(fn, 40, "gl843_bottom_offset_%03d_%03d_%03d.pnm",
+ bottom[0], bottom[1], bottom[2]);
+ sanei_genesys_write_pnm_file(fn, first_line.data(), bpp, channels, pixels, lines);
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ bottomavg[i] = dark_average_channel(first_line.data(), pixels, lines, channels, black_pixels, i);
+ DBG(DBG_io2, "%s: bottom avg %d=%d\n", __func__, i, bottomavg[i]);
+ }
+
+ /* now top value */
+ for (i = 0; i < 3; i++)
+ {
+ top[i] = 255;
+ dev->frontend.set_offset(i, top[i]);
+ }
+ RIE(gl843_set_fe(dev, calib_sensor, AFE_SET));
+
+ /* scan with top AFE values */
+ RIE(dev->model->cmd_set->bulk_write_register(dev, regs));
+ DBG(DBG_info, "%s: starting second line reading\n", __func__);
+ RIE(gl843_begin_scan(dev, calib_sensor, &regs, SANE_TRUE));
+ RIE(sanei_genesys_read_data_from_scanner(dev, second_line.data(), total_size));
+ RIE(gl843_stop_action_no_move(dev, &regs));
+
+ for (i = 0; i < 3; i++)
+ {
+ topavg[i] = dark_average_channel(second_line.data(), pixels, lines, channels, black_pixels, i);
+ DBG(DBG_io2, "%s: top avg %d=%d\n", __func__, i, topavg[i]);
+ }
+
+ pass = 0;
+
+ std::vector<uint8_t> debug_image;
+ size_t debug_image_lines = 0;
+ std::string debug_image_info;
+
+ /* loop until acceptable level */
+ while ((pass < 32)
+ && ((top[0] - bottom[0] > 1)
+ || (top[1] - bottom[1] > 1) || (top[2] - bottom[2] > 1)))
+ {
+ pass++;
+
+ /* settings for new scan */
+ for (i = 0; i < 3; i++)
+ {
+ if (top[i] - bottom[i] > 1)
+ {
+ dev->frontend.set_offset(i, (top[i] + bottom[i]) / 2);
+ }
+ }
+ RIE(gl843_set_fe(dev, calib_sensor, AFE_SET));
+
+ /* scan with no move */
+ RIE(dev->model->cmd_set->bulk_write_register(dev, regs));
+ DBG(DBG_info, "%s: starting second line reading\n", __func__);
+ RIE(gl843_begin_scan(dev, calib_sensor, &regs, SANE_TRUE));
+ RIE(sanei_genesys_read_data_from_scanner(dev, second_line.data(), total_size));
+ RIE(gl843_stop_action_no_move(dev, &regs));
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ char title[100];
+ snprintf(title, 100, "lines: %d pixels_per_line: %d offsets[0..2]: %d %d %d\n",
+ lines, pixels,
+ dev->frontend.get_offset(0),
+ dev->frontend.get_offset(1),
+ dev->frontend.get_offset(2));
+ debug_image_info += title;
+ std::copy(second_line.begin(), second_line.end(), std::back_inserter(debug_image));
+ debug_image_lines += lines;
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ avg[i] = dark_average_channel(second_line.data(), pixels, lines, channels, black_pixels, i);
+ DBG(DBG_info, "%s: avg[%d]=%d offset=%d\n", __func__, i, avg[i],
+ dev->frontend.get_offset(i));
+ }
+
+ /* compute new boundaries */
+ for (i = 0; i < 3; i++)
+ {
+ if (topavg[i] >= avg[i])
+ {
+ topavg[i] = avg[i];
+ top[i] = dev->frontend.get_offset(i);
+ }
+ else
+ {
+ bottomavg[i] = avg[i];
+ bottom[i] = dev->frontend.get_offset(i);
+ }
+ }
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sanei_genesys_write_file("gl843_offset_all_desc.txt",
+ (uint8_t*) debug_image_info.data(), debug_image_info.size());
+ sanei_genesys_write_pnm_file("gl843_offset_all.pnm",
+ debug_image.data(), bpp, channels, pixels, debug_image_lines);
+ }
+
+ 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;
+}
+
+
+/* alternative coarse gain calibration
+ this on uses the settings from offset_calibration and
+ uses only one scanline
+ */
+/*
+ with offset and coarse calibration we only want to get our input range into
+ a reasonable shape. the fine calibration of the upper and lower bounds will
+ be done with shading.
+ */
+static SANE_Status
+gl843_coarse_gain_calibration(Genesys_Device * dev, const Genesys_Sensor& sensor,
+ Genesys_Register_Set& regs, int dpi)
+{
+ int pixels, factor, dpihw;
+ int total_size;
+ int i, j, channels;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int max[3];
+ float coeff;
+ int val, lines;
+ int resolution;
+ int bpp;
+
+ DBG(DBG_proc, "%s: dpi = %d\n", __func__, dpi);
+ dpihw=sanei_genesys_compute_dpihw_calibration(dev, sensor, dpi);
+ factor=sensor.optical_res/dpihw;
+
+ /* coarse gain calibration is always done in color mode */
+ channels = 3;
+
+ /* follow CKSEL */
+ if (dev->model->ccd_type == CCD_KVSS080)
+ {
+ if(dev->settings.xres<sensor.optical_res)
+ {
+ coeff=0.9;
+ }
+ else
+ {
+ coeff=1.0;
+ }
+ }
+ else
+ {
+ coeff=1.0;
+ }
+ resolution=dpihw;
+ lines=10;
+ bpp=8;
+ int target_pixels = sensor.sensor_pixels / factor;
+
+ int flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+
+ if (dev->settings.scan_method == ScanMethod::TRANSPARENCY)
+ {
+ flags |= SCAN_FLAG_USE_XPA;
+ }
+
+ const auto& calib_sensor = sanei_genesys_find_sensor(dev, resolution,
+ dev->settings.scan_method);
+
+ ScanSession session;
+ session.params.xres = resolution;
+ session.params.yres = resolution;
+ session.params.startx = 0;
+ session.params.starty = 0;
+ session.params.pixels = target_pixels;
+ session.params.lines = lines;
+ session.params.depth = bpp;
+ session.params.channels = channels;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ session.params.color_filter = dev->settings.color_filter;
+ session.params.flags = flags;
+ gl843_compute_session(dev, session, calib_sensor);
+ pixels = session.output_pixels;
+
+ try {
+ status = gl843_init_scan_regs(dev, calib_sensor, &regs, session);
+ } 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 = dev->read_bytes_left;
+
+ std::vector<uint8_t> line(total_size);
+
+ RIE(gl843_set_fe(dev, calib_sensor, AFE_SET));
+ RIE(gl843_begin_scan(dev, calib_sensor, &regs, SANE_TRUE));
+ RIE(sanei_genesys_read_data_from_scanner (dev, line.data(), total_size));
+ RIE(gl843_stop_action_no_move(dev, &regs));
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file("gl843_gain.pnm", line.data(), bpp, channels, pixels, lines);
+
+ /* average value on each channel */
+ for (j = 0; j < channels; j++)
+ {
+ max[j] = 0;
+ // FIXME: start from the second line because the first line often has artifacts. Probably
+ // caused by unclean cleanup of previous scans
+ for (i = pixels/4 + pixels; i < (pixels*3/4) + pixels; 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);
+
+ /* the flow of data through the frontend ADC is as follows (see e.g. VM8192 datasheet)
+ input
+ -> apply offset (o = i + 260mV * (DAC[7:0]-127.5)/127.5) ->
+ -> apply gain (o = i * 208/(283-PGA[7:0])
+ -> ADC
+
+ Here we have some input data that was acquired with zero gain (PGA==0).
+ We want to compute gain such that the output would approach full ADC range (controlled by
+ gain_white_ref).
+
+ We want to solve the following for {PGA}:
+
+ {input} * 208 / (283 - 0) = {output}
+ {input} * 208 / (283 - {PGA}) = {target output}
+
+ The solution is the following equation:
+
+ {PGA} = 283 * (1 - {output} / {target output})
+ */
+ float gain = ((float) max[j] / (calib_sensor.gain_white_ref*coeff));
+ int code = 283 * (1 - gain);
+ 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,
+ code);
+ }
+
+ 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 (gl843_stop_action (dev));
+
+ status=gl843_slow_back_home (dev, SANE_TRUE);
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/*
+ * wait for lamp warmup by scanning the same line until difference
+ * between 2 scans is below a threshold
+ */
+static SANE_Status
+gl843_init_regs_for_warmup (Genesys_Device * dev,
+ const Genesys_Sensor& sensor,
+ Genesys_Register_Set * reg,
+ int *channels, int *total_size)
+{
+ int num_pixels;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int dpihw;
+ int resolution;
+ int factor;
+
+ DBGSTART;
+ if (dev == NULL || reg == NULL || channels == NULL || total_size == NULL)
+ return SANE_STATUS_INVAL;
+
+ /* setup scan */
+ *channels=3;
+ resolution=600;
+ dpihw=sanei_genesys_compute_dpihw_calibration(dev, sensor, resolution);
+ resolution=dpihw;
+
+ const auto& calib_sensor = sanei_genesys_find_sensor(dev, resolution,
+ dev->settings.scan_method);
+ factor = calib_sensor.optical_res/dpihw;
+ num_pixels = calib_sensor.sensor_pixels/(factor*2);
+ *total_size = num_pixels * 3 * 1;
+
+ *reg = dev->reg;
+
+ ScanSession session;
+ session.params.xres = resolution;
+ session.params.yres = resolution;
+ session.params.startx = num_pixels/2;
+ session.params.starty = 0;
+ session.params.pixels = num_pixels;
+ session.params.lines = 1;
+ session.params.depth = 8;
+ session.params.channels = *channels;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS;
+ session.params.color_filter = dev->settings.color_filter;
+ session.params.flags = SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE;
+ gl843_compute_session(dev, session, calib_sensor);
+
+ status = gl843_init_scan_regs(dev, calib_sensor, reg, session);
+
+ 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(*reg, false);
+ RIE(dev->model->cmd_set->bulk_write_register(dev, *reg));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * set up GPIO/GPOE for idle state
+WRITE GPIO[17-21]= GPIO19
+WRITE GPOE[17-21]= GPOE21 GPOE20 GPOE19 GPOE18
+genesys_write_register(0xa8,0x3e)
+GPIO(0xa8)=0x3e
+ */
+static SANE_Status
+gl843_init_gpio (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int idx;
+
+ DBGSTART;
+
+ RIE (sanei_genesys_write_register (dev, REG6E, dev->gpo.enable[0]));
+ RIE (sanei_genesys_write_register (dev, REG6F, dev->gpo.enable[1]));
+ RIE (sanei_genesys_write_register (dev, REG6C, dev->gpo.value[0]));
+ RIE (sanei_genesys_write_register (dev, REG6D, dev->gpo.value[1]));
+
+ idx=0;
+ while(dev->model->gpo_type != gpios[idx].gpo_type && gpios[idx].gpo_type!=0)
+ {
+ idx++;
+ }
+ if (gpios[idx].gpo_type!=0)
+ {
+ RIE (sanei_genesys_write_register (dev, REGA6, gpios[idx].ra6));
+ RIE (sanei_genesys_write_register (dev, REGA7, gpios[idx].ra7));
+ RIE (sanei_genesys_write_register (dev, REGA8, gpios[idx].ra8));
+ RIE (sanei_genesys_write_register (dev, REGA9, gpios[idx].ra9));
+ }
+ else
+ {
+ status=SANE_STATUS_INVAL;
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/* *
+ * initialize ASIC from power on condition
+ */
+static SANE_Status
+gl843_boot (Genesys_Device * dev, SANE_Bool cold)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+
+ DBGSTART;
+
+ if(cold)
+ {
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x01));
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x00));
+ }
+
+ if(dev->usb_mode == 1)
+ {
+ val = 0x14;
+ }
+ else
+ {
+ val = 0x11;
+ }
+ RIE (sanei_genesys_write_0x8c (dev, 0x0f, val));
+
+ /* 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 */
+ gl843_init_registers (dev);
+
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ // turns on vref control for maximum current of the motor driver
+ RIE(sanei_genesys_write_register (dev, REG6B, 0x72));
+ }
+ else
+ {
+ RIE(sanei_genesys_write_register (dev, REG6B, 0x02));
+ }
+
+ /* 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;
+
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ RIE (sanei_genesys_write_0x8c (dev, 0x10, 0xc8));
+ }
+ else
+ {
+ RIE (sanei_genesys_write_0x8c (dev, 0x10, 0xb4));
+ }
+
+ /* CLKSET */
+ int clock_freq = REG0B_48MHZ;
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ clock_freq = REG0B_60MHZ;
+
+ val = (dev->reg.find_reg(0x0b).value & ~REG0B_CLKSET) | clock_freq;
+
+ 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);
+
+ if (dev->model->model_id != MODEL_CANON_CANOSCAN_8600F)
+ {
+ // set up end access
+ // FIXME: this is overwritten in gl843_init_gpio
+ sanei_genesys_write_register(dev, REGA7, 0x04);
+ sanei_genesys_write_register(dev, REGA9, 0x00);
+ }
+
+ /* set RAM read address */
+ RIE (sanei_genesys_write_register (dev, REG29, 0x00));
+ RIE (sanei_genesys_write_register (dev, REG2A, 0x00));
+ RIE (sanei_genesys_write_register (dev, REG2B, 0x00));
+
+ /* setup gpio */
+ RIE (gl843_init_gpio (dev));
+
+ gl843_feed (dev, 300);
+ sanei_genesys_sleep_ms(100);
+
+ 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
+gl843_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
+gl843_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;
+
+ RIE (sanei_genesys_read_register (s->dev, REG6D, &val));
+
+ switch (s->dev->model->gpo_type)
+ {
+ case GPO_KVSS080:
+ s->buttons[BUTTON_SCAN_SW].write((val & 0x04) == 0);
+ break;
+ case GPO_G4050:
+ s->buttons[BUTTON_SCAN_SW].write((val & 0x01) == 0);
+ s->buttons[BUTTON_FILE_SW].write((val & 0x02) == 0);
+ s->buttons[BUTTON_EMAIL_SW].write((val & 0x04) == 0);
+ s->buttons[BUTTON_COPY_SW].write((val & 0x08) == 0);
+ break;
+ case GPO_CS4400F:
+ case GPO_CS8400F:
+ default:
+ break;
+ }
+
+ return status;
+}
+
+/** @brief move sensor to transparency adaptor
+ * Move sensor to the calibration of the transparency adapator (XPA).
+ * @param dev device to use
+ */
+static SANE_Status
+gl843_move_to_ta (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ float resolution;
+ unsigned int feed;
+
+ DBGSTART;
+
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+ feed = 16*(SANE_UNFIX (dev->model->y_offset_calib_ta) * resolution) / MM_PER_INCH;
+ status = gl843_feed (dev, feed);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to move to XPA calibration area\n", __func__);
+ return status;
+ }
+
+ DBGCOMPLETED;
+ 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
+gl843_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;
+ GenesysRegister *r;
+
+ DBG(DBG_proc, "%s %s %s\n", __func__, black ? "black" : "white", forward ? "forward" : "reverse");
+
+ gl843_set_fe(dev, sensor, AFE_SET);
+ status = gl843_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 = sanei_genesys_get_lowest_dpi(dev);
+ channels = 1;
+
+ const auto& calib_sensor = sanei_genesys_find_sensor(dev, dpi, dev->settings.scan_method);
+
+ /* 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 = (calib_sensor.sensor_pixels * dpi) / calib_sensor.optical_res;
+
+ dev->scanhead_position_in_steps = 0;
+
+ local_reg = dev->reg;
+
+ ScanSession session;
+ session.params.xres = dpi;
+ session.params.yres = dpi;
+ session.params.startx = 0;
+ session.params.starty = 0;
+ session.params.pixels = pixels;
+ session.params.lines = lines;
+ session.params.depth = depth;
+ session.params.channels = channels;
+ session.params.scan_method = dev->settings.scan_method;
+ session.params.scan_mode = ScanColorMode::GRAY;
+ session.params.color_filter = ColorFilter::RED;
+ session.params.flags = SCAN_FLAG_DISABLE_SHADING | SCAN_FLAG_DISABLE_SHADING;
+ gl843_compute_session(dev, session, calib_sensor);
+
+ status = gl843_init_scan_regs(dev, calib_sensor, &local_reg, session);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to setup for scan: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ size = dev->read_bytes_left;
+ std::vector<uint8_t> data(size);
+
+ /* 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 = gl843_begin_scan(dev, calib_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 = gl843_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: gl843_stop_action failed\n", __func__);
+ return status;
+ }
+
+ pass = 0;
+ if (DBG_LEVEL >= DBG_data)
+ {
+ char fn[40];
+ snprintf(fn, 40, "gl843_search_strip_%s_%s%02d.pnm",
+ black ? "black" : "white", forward ? "fwd" : "bwd", (int)pass);
+ sanei_genesys_write_pnm_file(fn, 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 = gl843_begin_scan(dev, calib_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 = gl843_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: gl843_stop_action failed\n", __func__);
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ char fn[40];
+ snprintf(fn, 40, "gl843_search_strip_%s_%s%02d.pnm",
+ black ? "black" : "white", forward ? "fwd" : "bwd", (int)pass);
+ sanei_genesys_write_pnm_file(fn, 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");
+ }
+
+ DBG(DBG_proc, "%s: completed\n", __func__);
+ return status;
+}
+
+/**
+ * Send shading calibration data. The buffer is considered to always hold values
+ * for all the channels.
+ */
+static SANE_Status
+gl843_send_shading_data (Genesys_Device * dev, const Genesys_Sensor& sensor,
+ uint8_t * data, int size)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint32_t final_size, length, i;
+ uint8_t *buffer;
+ int count,offset;
+ unsigned int cksel;
+ GenesysRegister *r;
+ uint16_t dpiset, strpixel, endpixel, startx, factor;
+
+ DBGSTART;
+
+ offset=0;
+ length=size;
+ r = sanei_genesys_get_address(&dev->reg, REG01);
+ if(r->value & REG01_SHDAREA)
+ {
+ /* recompute STRPIXEL used shading calibration so we can
+ * compute offset within data for SHDAREA case */
+ r = sanei_genesys_get_address(&dev->reg, REG18);
+ cksel= (r->value & REG18_CKSEL)+1;
+ sanei_genesys_get_double(&dev->reg,REG_DPISET,&strpixel);
+ sanei_genesys_get_double(&dev->reg,REG_DPISET,&dpiset);
+ factor=sensor.optical_res/sanei_genesys_compute_dpihw(dev, sensor, dpiset);
+
+ /* start coordinate in optical dpi coordinates */
+ startx = (sensor.dummy_pixel / cksel) / factor;
+
+ /* current scan coordinates */
+ sanei_genesys_get_double(&dev->reg,REG_STRPIXEL,&strpixel);
+ sanei_genesys_get_double(&dev->reg,REG_ENDPIXEL,&endpixel);
+
+ if (dev->model->model_id == MODEL_CANON_CANOSCAN_8600F)
+ {
+ int optical_res = sensor.optical_res / dev->current_setup.ccd_size_divisor;
+ int dpiset_real = dpiset / dev->current_setup.ccd_size_divisor;
+ int half_ccd_factor = optical_res /
+ sanei_genesys_compute_dpihw_calibration(dev, sensor, dpiset_real);
+ strpixel /= half_ccd_factor;
+ endpixel /= half_ccd_factor;
+ }
+
+ /* 16 bit words, 2 words per color, 3 color channels */
+ offset=(strpixel-startx)*2*2*3;
+ length=(endpixel-strpixel)*2*2*3;
+ DBG(DBG_info, "%s: STRPIXEL=%d, ENDPIXEL=%d, startx=%d\n", __func__, strpixel, endpixel,
+ startx);
+ }
+
+ /* compute and allocate size for final data */
+ final_size = ((length+251) / 252) * 256;
+ DBG(DBG_io, "%s: final shading size=%04x (length=%d)\n", __func__, final_size, length);
+ std::vector<uint8_t> final_data(final_size, 0);
+
+ /* copy regular shading data to the expected layout */
+ buffer = final_data.data();
+ count = 0;
+
+ /* loop over calibration data */
+ for (i = 0; i < length; i++)
+ {
+ buffer[count] = data[offset+i];
+ count++;
+ if ((count % (256*2)) == (252*2))
+ {
+ count += 4*2;
+ }
+ }
+
+ /* send data */
+ status = sanei_genesys_set_buffer_address (dev, 0);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to set buffer address: %s\n", __func__, sane_strstatus(status));
+ return status;
+ }
+
+ status = dev->model->cmd_set->bulk_write_data (dev, 0x3c, final_data.data(), count);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG(DBG_error, "%s: failed to send shading table: %s\n", __func__, sane_strstatus(status));
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/** the gl843 command set */
+static Genesys_Command_Set gl843_cmd_set = {
+ "gl843-generic", /* the name of this set */
+
+ [](Genesys_Device* dev) -> bool { (void) dev; return true; },
+
+ gl843_init,
+ gl843_init_regs_for_warmup,
+ gl843_init_regs_for_coarse_calibration,
+ gl843_init_regs_for_shading,
+ gl843_init_regs_for_scan,
+
+ gl843_get_filter_bit,
+ gl843_get_lineart_bit,
+ gl843_get_bitset_bit,
+ gl843_get_gain4_bit,
+ gl843_get_fast_feed_bit,
+ gl843_test_buffer_empty_bit,
+ gl843_test_motor_flag_bit,
+
+ gl843_set_fe,
+ gl843_set_powersaving,
+ gl843_save_power,
+
+ gl843_begin_scan,
+ gl843_end_scan,
+
+ gl843_send_gamma_table,
+
+ gl843_search_start_position,
+
+ gl843_offset_calibration,
+ gl843_coarse_gain_calibration,
+ gl843_led_calibration,
+
+ NULL,
+ gl843_slow_back_home,
+ NULL,
+
+ sanei_genesys_bulk_write_register,
+ sanei_genesys_bulk_write_data,
+ sanei_genesys_bulk_read_data,
+
+ gl843_update_hardware_sensors,
+
+ gl843_load_document,
+ gl843_detect_document_end,
+ gl843_eject_document,
+ gl843_search_strip,
+
+ sanei_genesys_is_compatible_calibration,
+ gl843_move_to_ta,
+ gl843_send_shading_data,
+ gl843_calculate_current_setup,
+ gl843_boot
+};
+
+SANE_Status
+sanei_gl843_init_cmd_set (Genesys_Device * dev)
+{
+ dev->model->cmd_set = &gl843_cmd_set;
+ return SANE_STATUS_GOOD;
+}