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+/* sane - Scanner Access Now Easy.
+
+ Copyright (C) 2003, 2004 Henning Meier-Geinitz <henning@meier-geinitz.de>
+ Copyright (C) 2004, 2005 Gerhard Jaeger <gerhard@gjaeger.de>
+ Copyright (C) 2004-2013 Stéphane Voltz <stef.dev@free.fr>
+ Copyright (C) 2005-2009 Pierre Willenbrock <pierre@pirsoft.dnsalias.org>
+ Copyright (C) 2006 Laurent Charpentier <laurent_pubs@yahoo.com>
+ Copyright (C) 2007 Luke <iceyfor@gmail.com>
+ Copyright (C) 2010 Chris Berry <s0457957@sms.ed.ac.uk> and Michael Rickmann <mrickma@gwdg.de>
+ for Plustek Opticbook 3600 support
+
+ Dynamic rasterization code was taken from the epjistsu backend by
+ m. allan noah <kitno455 at gmail dot com>
+
+ Software processing for deskew, crop and dspeckle are inspired by allan's
+ noah work in the fujitsu backend
+
+ 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.
+*/
+
+/*
+ * SANE backend for Genesys Logic GL646/GL841/GL842/GL843/GL846/GL847/GL124 based scanners
+ */
+
+#define BUILD 2411
+#define BACKEND_NAME genesys
+
+#include "genesys.h"
+#include "../include/sane/sanei_config.h"
+#include "../include/sane/sanei_magic.h"
+#include "genesys_devices.c"
+
+static SANE_Int num_devices = 0;
+static Genesys_Device *first_dev = 0;
+static Genesys_Scanner *first_handle = 0;
+static const SANE_Device **devlist = 0;
+/* Array of newly attached devices */
+static Genesys_Device **new_dev = 0;
+/* Length of new_dev array */
+static SANE_Int new_dev_len = 0;
+/* Number of entries alloced for new_dev */
+static SANE_Int new_dev_alloced = 0;
+
+static SANE_String_Const mode_list[] = {
+ SANE_VALUE_SCAN_MODE_COLOR,
+ SANE_VALUE_SCAN_MODE_GRAY,
+ /* SANE_TITLE_HALFTONE, currently unused */
+ SANE_VALUE_SCAN_MODE_LINEART,
+ 0
+};
+
+static SANE_String_Const color_filter_list[] = {
+ SANE_I18N ("Red"),
+ SANE_I18N ("Green"),
+ SANE_I18N ("Blue"),
+ 0
+};
+
+static SANE_String_Const cis_color_filter_list[] = {
+ SANE_I18N ("Red"),
+ SANE_I18N ("Green"),
+ SANE_I18N ("Blue"),
+ SANE_I18N ("None"),
+ 0
+};
+
+static SANE_String_Const source_list[] = {
+ SANE_I18N (FLATBED),
+ SANE_I18N (TRANSPARENCY_ADAPTER),
+ 0
+};
+
+static SANE_Range swdespeck_range = {
+ 1,
+ 9,
+ 1
+};
+
+static SANE_Range time_range = {
+ 0, /* minimum */
+ 60, /* maximum */
+ 0 /* quantization */
+};
+
+static const SANE_Range u12_range = {
+ 0, /* minimum */
+ 4095, /* maximum */
+ 0 /* quantization */
+};
+
+static const SANE_Range u14_range = {
+ 0, /* minimum */
+ 16383, /* maximum */
+ 0 /* quantization */
+};
+
+static const SANE_Range u16_range = {
+ 0, /* minimum */
+ 65535, /* maximum */
+ 0 /* quantization */
+};
+
+static const SANE_Range percentage_range = {
+ SANE_FIX (0), /* minimum */
+ SANE_FIX (100), /* maximum */
+ SANE_FIX (1) /* quantization */
+};
+
+static const SANE_Range threshold_curve_range = {
+ 0, /* minimum */
+ 127, /* maximum */
+ 1 /* quantization */
+};
+
+/**
+ * range for brightness and contrast
+ */
+static const SANE_Range enhance_range = {
+ -100, /* minimum */
+ 100, /* maximum */
+ 1 /* quantization */
+};
+
+void
+sanei_genesys_init_structs (Genesys_Device * dev)
+{
+ unsigned int i, sensor_ok = 0, gpo_ok = 0, motor_ok = 0;
+
+ /* initialize the sensor data stuff */
+ for (i = 0; i < sizeof (Sensor) / sizeof (Genesys_Sensor); i++)
+ {
+ if (dev->model->ccd_type == Sensor[i].sensor_id)
+ {
+ memcpy (&dev->sensor, &Sensor[i], sizeof (Genesys_Sensor));
+ sensor_ok = 1;
+ }
+ }
+
+ /* initialize the GPO data stuff */
+ for (i = 0; i < sizeof (Gpo) / sizeof (Genesys_Gpo); i++)
+ {
+ if (dev->model->gpo_type == Gpo[i].gpo_id)
+ {
+ memcpy (&dev->gpo, &Gpo[i], sizeof (Genesys_Gpo));
+ gpo_ok = 1;
+ }
+ }
+
+ /* initialize the motor data stuff */
+ for (i = 0; i < sizeof (Motor) / sizeof (Genesys_Motor); i++)
+ {
+ if (dev->model->motor_type == Motor[i].motor_id)
+ {
+ memcpy (&dev->motor, &Motor[i], sizeof (Genesys_Motor));
+ motor_ok = 1;
+ }
+ }
+
+ /* sanity check */
+ if (sensor_ok == 0 || motor_ok == 0 || gpo_ok == 0)
+ {
+ DBG (DBG_error0,
+ "sanei_genesys_init_structs: bad description(s) for ccd/gpo/motor=%d/%d/%d\n",
+ dev->model->ccd_type, dev->model->gpo_type,
+ dev->model->motor_type);
+ }
+
+ /* set up initial line distance shift */
+ 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;
+}
+
+void
+sanei_genesys_init_fe (Genesys_Device * dev)
+{
+ unsigned int i;
+
+ DBGSTART;
+ for (i = 0; i < sizeof (Wolfson) / sizeof (Genesys_Frontend); i++)
+ {
+ if (dev->model->dac_type == Wolfson[i].fe_id)
+ {
+ memcpy (&dev->frontend, &Wolfson[i], sizeof (Genesys_Frontend));
+ return;
+ }
+ }
+ DBG (DBG_error0,
+ "sanei_genesys_init_fe: failed to find description for dac_type %d\n",
+ dev->model->dac_type);
+ DBG (DBG_info, "sanei_genesys_init_fe: dac_type %d set up\n",
+ dev->model->dac_type);
+ DBGCOMPLETED;
+}
+
+/* main function for slope creation */
+/**
+ * This function generates a slope table using the given slope
+ * truncated at the given exposure time or step count, whichever comes first.
+ * The reached step time is then stored in final_exposure and used for the rest
+ * of the table. The summed time of the acceleration steps is returned, and the
+ * number of accerelation steps is put into used_steps.
+ *
+ * @param slope_table Table to write to
+ * @param max_steps Size of slope_table in steps
+ * @param use_steps Maximum number of steps to use for acceleration
+ * @param stop_at Minimum step time to use
+ * @param vstart Start step time of default slope
+ * @param vend End step time of default slope
+ * @param steps Step count of default slope
+ * @param g Power for default slope
+ * @param used_steps Final number of steps is stored here
+ * @param vfinal Final step time is stored here
+ * @return Time for acceleration
+ * @note All times in pixel time. Correction for other motor timings is not
+ * done.
+ */
+SANE_Int
+sanei_genesys_generate_slope_table (uint16_t * slope_table,
+ unsigned int max_steps,
+ unsigned int use_steps,
+ uint16_t stop_at,
+ uint16_t vstart,
+ uint16_t vend,
+ unsigned int steps,
+ double g,
+ unsigned int *used_steps,
+ unsigned int *vfinal)
+{
+ double t;
+ SANE_Int sum = 0;
+ unsigned int i;
+ unsigned int c = 0;
+ uint16_t t2;
+ unsigned int dummy;
+ unsigned int _vfinal;
+ if (!used_steps)
+ used_steps = &dummy;
+ if (!vfinal)
+ vfinal = &_vfinal;
+
+ DBG (DBG_proc, "sanei_genesys_generate_slope_table: table size: %d\n",
+ max_steps);
+
+ DBG (DBG_proc,
+ "sanei_genesys_generate_slope_table: stop at time: %d, use %d steps max\n",
+ stop_at, use_steps);
+
+ DBG (DBG_proc,
+ "sanei_genesys_generate_slope_table: target slope: "
+ "vstart: %d, vend: %d, steps: %d, g: %g\n", vstart, vend, steps, g);
+
+ sum = 0;
+ c = 0;
+ *used_steps = 0;
+
+ if (use_steps < 1)
+ use_steps = 1;
+
+ if (stop_at < vstart)
+ {
+ t2 = vstart;
+ for (i = 0; i < steps && i < use_steps - 1 && i < max_steps; i++, c++)
+ {
+ t = pow (((double) i) / ((double) (steps - 1)), g);
+ t2 = vstart * (1 - t) + t * vend;
+ if (t2 < stop_at)
+ break;
+ *slope_table++ = t2;
+ /* DBG (DBG_io, "slope_table[%3d] = %5d\n", c, t2); */
+ sum += t2;
+ }
+ if (t2 > stop_at)
+ {
+ DBG (DBG_warn, "Can not reach target speed(%d) in %d steps.\n",
+ stop_at, use_steps);
+ DBG (DBG_warn, "Expect image to be distorted. "
+ "Ignore this if only feeding.\n");
+ }
+ *vfinal = t2;
+ *used_steps += i;
+ max_steps -= i;
+ }
+ else
+ *vfinal = stop_at;
+
+ for (i = 0; i < max_steps; i++, c++)
+ {
+ *slope_table++ = *vfinal;
+ /* DBG (DBG_io, "slope_table[%3d] = %5d\n", c, *vfinal); */
+ }
+
+ (*used_steps)++;
+ sum += *vfinal;
+
+ DBG (DBG_proc,
+ "sanei_genesys_generate_slope_table: returns sum=%d, used %d steps, completed\n",
+ sum, *used_steps);
+
+ return sum;
+}
+
+/* Generate slope table for motor movement */
+/**
+ * This function generates a slope table using the slope from the motor struct
+ * truncated at the given exposure time or step count, whichever comes first.
+ * The reached step time is then stored in final_exposure and used for the rest
+ * of the table. The summed time of the acceleration steps is returned, and the
+ * number of accerelation steps is put into used_steps.
+ *
+ * @param dev Device struct
+ * @param slope_table Table to write to
+ * @param max_step Size of slope_table in steps
+ * @param use_steps Maximum number of steps to use for acceleration
+ * @param step_type Generate table for this step_type. 0=>full, 1=>half,
+ * 2=>quarter
+ * @param exposure_time Minimum exposure time of a scan line
+ * @param yres Resolution of a scan line
+ * @param used_steps Final number of steps is stored here
+ * @param final_exposure Final step time is stored here
+ * @param power_mode Power mode (related to the Vref used) of the motor
+ * @return Time for acceleration
+ * @note all times in pixel time
+ */
+SANE_Int
+sanei_genesys_create_slope_table3 (Genesys_Device * dev,
+ uint16_t * slope_table,
+ int max_step,
+ unsigned int use_steps,
+ int step_type,
+ int exposure_time,
+ double yres,
+ unsigned int *used_steps,
+ unsigned int *final_exposure,
+ int power_mode)
+{
+ unsigned int sum_time = 0;
+ unsigned int vtarget;
+ unsigned int vend;
+ unsigned int vstart;
+ unsigned int vfinal;
+
+ DBG (DBG_proc,
+ "%s: step_type = %d, "
+ "exposure_time = %d, yres = %g, power_mode = %d\n", __FUNCTION__, step_type,
+ exposure_time, yres, power_mode);
+
+ /* final speed */
+ vtarget = (exposure_time * yres) / dev->motor.base_ydpi;
+
+ vstart = dev->motor.slopes[power_mode][step_type].maximum_start_speed;
+ vend = dev->motor.slopes[power_mode][step_type].maximum_speed;
+
+ vtarget >>= step_type;
+ if (vtarget > 65535)
+ vtarget = 65535;
+
+ vstart >>= step_type;
+ if (vstart > 65535)
+ vstart = 65535;
+
+ vend >>= step_type;
+ if (vend > 65535)
+ vend = 65535;
+
+ sum_time = sanei_genesys_generate_slope_table (slope_table,
+ max_step,
+ use_steps,
+ vtarget,
+ vstart,
+ vend,
+ dev->motor.slopes[power_mode][step_type].minimum_steps << step_type,
+ dev->motor.slopes[power_mode][step_type].g,
+ used_steps,
+ &vfinal);
+
+ if (final_exposure)
+ *final_exposure = (vfinal * dev->motor.base_ydpi) / yres;
+
+ DBG (DBG_proc,
+ "sanei_genesys_create_slope_table: returns sum_time=%d, completed\n",
+ sum_time);
+
+ return sum_time;
+}
+
+
+/* alternate slope table creation function */
+/* the hardcoded values (g and vstart) will go in a motor struct */
+static SANE_Int
+genesys_create_slope_table2 (Genesys_Device * dev,
+ uint16_t * slope_table, int steps,
+ int step_type, int exposure_time,
+ SANE_Bool same_speed, double yres,
+ int power_mode)
+{
+ double t, g;
+ SANE_Int sum = 0;
+ int vstart, vend;
+ int i;
+
+ DBG (DBG_proc,
+ "sanei_genesys_create_slope_table2: %d steps, step_type = %d, "
+ "exposure_time = %d, same_speed = %d, yres = %.2f, power_mode = %d\n",
+ steps, step_type, exposure_time, same_speed, yres, power_mode);
+
+ /* start speed */
+ if (dev->model->motor_type == MOTOR_5345)
+ {
+ if (yres < dev->motor.base_ydpi / 6)
+ vstart = 2500;
+ else
+ vstart = 2000;
+ }
+ else
+ {
+ if (steps == 2)
+ vstart = exposure_time;
+ else if (steps == 3)
+ vstart = 2 * exposure_time;
+ else if (steps == 4)
+ vstart = 1.5 * exposure_time;
+ else if (steps == 120)
+ vstart = 1.81674 * exposure_time;
+ else
+ vstart = exposure_time;
+ }
+
+ /* final speed */
+ vend = (exposure_time * yres) / (dev->motor.base_ydpi * (1 << step_type));
+
+ /*
+ type=1 : full
+ type=2 : half
+ type=4 : quarter
+ vend * type * base_ydpi / exposure = yres
+ */
+
+ /* acceleration */
+ switch (steps)
+ {
+ case 255:
+ /* test for special case: fast moving slope */
+ /* todo: a 'fast' boolean parameter should be better */
+ if (vstart == 2000)
+ g = 0.2013;
+ else
+ g = 0.1677;
+ break;
+ case 120:
+ g = 0.5;
+ break;
+ case 67:
+ g = 0.5;
+ break;
+ case 64:
+ g = 0.2555;
+ break;
+ case 44:
+ g = 0.5;
+ break;
+ case 4:
+ g = 0.5;
+ break;
+ case 3:
+ g = 1;
+ break;
+ case 2:
+ vstart = vend;
+ g = 1;
+ break;
+ default:
+ g = 0.2635;
+ }
+
+ /* if same speed, no 'g' */
+ sum = 0;
+ if (same_speed)
+ {
+ for (i = 0; i < 255; i++)
+ {
+ slope_table[i] = vend;
+ sum += slope_table[i];
+ DBG (DBG_io, "slope_table[%3d] = %5d\n", i, slope_table[i]);
+ }
+ }
+ else
+ {
+ for (i = 0; i < steps; i++)
+ {
+ t = pow (((double) i) / ((double) (steps - 1)), g);
+ slope_table[i] = vstart * (1 - t) + t * vend;
+ DBG (DBG_io, "slope_table[%3d] = %5d\n", i, slope_table[i]);
+ sum += slope_table[i];
+ }
+ for (i = steps; i < 255; i++)
+ {
+ slope_table[i] = vend;
+ DBG (DBG_io, "slope_table[%3d] = %5d\n", i, slope_table[i]);
+ sum += slope_table[i];
+ }
+ }
+
+ DBG (DBG_proc,
+ "sanei_genesys_create_slope_table2: returns sum=%d, completed\n", sum);
+
+ return sum;
+}
+
+/* Generate slope table for motor movement */
+/* todo: check details */
+SANE_Int
+sanei_genesys_create_slope_table (Genesys_Device * dev,
+ uint16_t * slope_table, int steps,
+ int step_type, int exposure_time,
+ SANE_Bool same_speed, double yres,
+ int power_mode)
+{
+ double t;
+ double start_speed;
+ double g;
+ uint32_t time_period;
+ int sum_time = 0;
+ int i, divider;
+ int same_step;
+
+ if (dev->model->motor_type == MOTOR_5345
+ || dev->model->motor_type == MOTOR_HP2300
+ || dev->model->motor_type == MOTOR_HP2400)
+ return genesys_create_slope_table2 (dev, slope_table, steps,
+ step_type, exposure_time,
+ same_speed, yres, power_mode);
+
+ DBG (DBG_proc,
+ "sanei_genesys_create_slope_table: %d steps, step_type = %d, "
+ "exposure_time = %d, same_speed =%d\n", steps, step_type,
+ exposure_time, same_speed);
+ DBG (DBG_proc, "sanei_genesys_create_slope_table: yres = %.2f\n", yres);
+
+ g = 0.6;
+ start_speed = 0.01;
+ same_step = 4;
+ divider = 1 << step_type;
+
+ time_period =
+ (uint32_t) (yres * exposure_time / dev->motor.base_ydpi /*MOTOR_GEAR */ );
+ if ((time_period < 2000) && (same_speed))
+ same_speed = SANE_FALSE;
+
+ time_period = time_period / divider;
+
+ if (same_speed)
+ {
+ for (i = 0; i < steps; i++)
+ {
+ slope_table[i] = (uint16_t) time_period;
+ sum_time += time_period;
+
+ DBG (DBG_io, "slope_table[%d] = %d\n", i, time_period);
+ }
+ DBG (DBG_info,
+ "sanei_genesys_create_slope_table: returns sum_time=%d, completed\n",
+ sum_time);
+ return sum_time;
+ }
+
+ if (time_period > MOTOR_SPEED_MAX * 5)
+ {
+ g = 1.0;
+ start_speed = 0.05;
+ same_step = 2;
+ }
+ else if (time_period > MOTOR_SPEED_MAX * 4)
+ {
+ g = 0.8;
+ start_speed = 0.04;
+ same_step = 2;
+ }
+ else if (time_period > MOTOR_SPEED_MAX * 3)
+ {
+ g = 0.7;
+ start_speed = 0.03;
+ same_step = 2;
+ }
+ else if (time_period > MOTOR_SPEED_MAX * 2)
+ {
+ g = 0.6;
+ start_speed = 0.02;
+ same_step = 3;
+ }
+
+ if (dev->model->motor_type == MOTOR_ST24)
+ {
+ steps = 255;
+ switch ((int) yres)
+ {
+ case 2400:
+ g = 0.1672;
+ start_speed = 1.09;
+ break;
+ case 1200:
+ g = 1;
+ start_speed = 6.4;
+ break;
+ case 600:
+ g = 0.1672;
+ start_speed = 1.09;
+ break;
+ case 400:
+ g = 0.2005;
+ start_speed = 20.0 / 3.0 /*7.5 */ ;
+ break;
+ case 300:
+ g = 0.253;
+ start_speed = 2.182;
+ break;
+ case 150:
+ g = 0.253;
+ start_speed = 4.367;
+ break;
+ default:
+ g = 0.262;
+ start_speed = 7.29;
+ }
+ same_step = 1;
+ }
+
+ if (steps <= same_step)
+ {
+ time_period =
+ (uint32_t) (yres * exposure_time /
+ dev->motor.base_ydpi /*MOTOR_GEAR */ );
+ time_period = time_period / divider;
+
+ if (time_period > 65535)
+ time_period = 65535;
+
+ for (i = 0; i < same_step; i++)
+ {
+ slope_table[i] = (uint16_t) time_period;
+ sum_time += time_period;
+
+ DBG (DBG_io, "slope_table[%d] = %d\n", i, time_period);
+ }
+
+ DBG (DBG_proc,
+ "sanei_genesys_create_slope_table: returns sum_time=%d, completed\n",
+ sum_time);
+ return sum_time;
+ }
+
+ for (i = 0; i < steps; i++)
+ {
+ double j = ((double) i) - same_step + 1; /* start from 1/16 speed */
+
+ if (j <= 0)
+ t = 0;
+ else
+ t = pow (j / (steps - same_step), g);
+
+ time_period = /* time required for full steps */
+ (uint32_t) (yres * exposure_time /
+ dev->motor.base_ydpi /*MOTOR_GEAR */ *
+ (start_speed + (1 - start_speed) * t));
+
+ time_period = time_period / divider;
+ if (time_period > 65535)
+ time_period = 65535;
+
+ slope_table[i] = (uint16_t) time_period;
+ sum_time += time_period;
+
+ DBG (DBG_io, "slope_table[%d] = %d\n", i, slope_table[i]);
+ }
+
+ DBG (DBG_proc,
+ "sanei_genesys_create_slope_table: returns sum_time=%d, completed\n",
+ sum_time);
+
+ return sum_time;
+}
+
+/** @brief computes gamma table
+ * Generates a gamma table of the given length within 0 and the given
+ * maximum value
+ * @param gamma_table gamma table to fill
+ * @param size size of the table
+ * @param maximum value allowed for gamma
+ * @param gamma_max maximum gamma value
+ * @param gamma gamma to compute values
+ * @return a gamma table filled with the computed values
+ * */
+void
+sanei_genesys_create_gamma_table (uint16_t * gamma_table, int size,
+ float maximum, float gamma_max, float gamma)
+{
+ int i;
+ float value;
+
+ if(gamma_table==NULL)
+ {
+ DBG (DBG_proc, "sanei_genesys_create_gamma_table: gamma tbale is NULL\n");
+ return;
+ }
+ DBG (DBG_proc,
+ "sanei_genesys_create_gamma_table: size = %d, "
+ "maximum = %g, gamma_max = %g, gamma = %g\n",
+ size, maximum, gamma_max, gamma);
+ for (i = 0; i < size; i++)
+ {
+ value = gamma_max * pow ((float) i / size, 1.0 / gamma);
+ if (value > maximum)
+ value = maximum;
+ gamma_table[i] = value;
+ }
+ DBG (DBG_proc, "sanei_genesys_create_gamma_table: completed\n");
+}
+
+
+/* computes the exposure_time on the basis of the given vertical dpi,
+ the number of pixels the ccd needs to send,
+ the step_type and the corresponding maximum speed from the motor struct */
+/*
+ Currently considers maximum motor speed at given step_type, minimum
+ line exposure needed for conversion and led exposure time.
+
+ TODO: Should also consider maximum transfer rate: ~6.5MB/s.
+ Note: The enhance option of the scanners does _not_ help. It only halves
+ the amount of pixels transfered.
+ */
+SANE_Int
+sanei_genesys_exposure_time2 (Genesys_Device * dev, float ydpi,
+ int step_type, int endpixel,
+ int led_exposure, int power_mode)
+{
+ int exposure_by_ccd = endpixel + 32;
+ int exposure_by_motor =
+ (dev->motor.slopes[power_mode][step_type].maximum_speed
+ * dev->motor.base_ydpi) / ydpi;
+ int exposure_by_led = led_exposure;
+
+ int exposure = exposure_by_ccd;
+
+ if (exposure < exposure_by_motor)
+ exposure = exposure_by_motor;
+
+ if (exposure < exposure_by_led && dev->model->is_cis)
+ exposure = exposure_by_led;
+
+ return exposure;
+}
+
+/* computes the exposure_time on the basis of the given horizontal dpi */
+/* we will clean/simplify it by using constants from a future motor struct */
+SANE_Int
+sanei_genesys_exposure_time (Genesys_Device * dev, Genesys_Register_Set * reg,
+ int xdpi)
+{
+ if (dev->model->motor_type == MOTOR_5345)
+ {
+ if (dev->model->cmd_set->get_filter_bit (reg))
+ {
+ /* monochrome */
+ switch (xdpi)
+ {
+ case 600:
+ return 8500;
+ case 500:
+ case 400:
+ case 300:
+ case 250:
+ case 200:
+ case 150:
+ return 5500;
+ case 100:
+ return 6500;
+ case 50:
+ return 12000;
+ default:
+ return 11000;
+ }
+ }
+ else
+ {
+ /* color scan */
+ switch (xdpi)
+ {
+ case 300:
+ case 250:
+ case 200:
+ return 5500;
+ case 50:
+ return 12000;
+ default:
+ return 11000;
+ }
+ }
+ }
+ else if (dev->model->motor_type == MOTOR_HP2400)
+ {
+ if (dev->model->cmd_set->get_filter_bit (reg))
+ {
+ /* monochrome */
+ switch (xdpi)
+ {
+ case 200:
+ return 7210;
+ default:
+ return 11111;
+ }
+ }
+ else
+ {
+ /* color scan */
+ switch (xdpi)
+ {
+ case 600:
+ return 8751; /*11902; 19200 */
+ default:
+ return 11111;
+ }
+ }
+ }
+ else if (dev->model->motor_type == MOTOR_HP2300)
+ {
+ if (dev->model->cmd_set->get_filter_bit (reg))
+ {
+ /* monochrome */
+ switch (xdpi)
+ {
+ case 600:
+ return 8699; /* 3200; */
+ case 300:
+ return 3200; /*10000;, 3200 -> too dark */
+ case 150:
+ return 4480; /* 3200 ???, warmup needs 4480 */
+ case 75:
+ return 5500;
+ default:
+ return 11111;
+ }
+ }
+ else
+ {
+ /* color scan */
+ switch (xdpi)
+ {
+ case 600:
+ return 8699;
+ case 300:
+ return 4349;
+ case 150:
+ case 75:
+ return 4480;
+ default:
+ return 11111;
+ }
+ }
+ }
+ return dev->settings.exposure_time;
+}
+
+
+
+/* Sends a block of shading information to the scanner.
+ The data is placed at address 0x0000 for color mode, gray mode and
+ unconditionally for the following CCD chips: HP2300, HP2400 and HP5345
+ In the other cases (lineart, halftone on ccd chips not mentioned) the
+ addresses are 0x2a00 for dpihw==0, 0x5500 for dpihw==1 and 0xa800 for
+ dpihw==2. //Note: why this?
+
+ The data needs to be of size "size", and in little endian byte order.
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+ SANE_Status
+genesys_send_offset_and_shading (Genesys_Device * dev, uint8_t * data,
+ int size)
+{
+ int dpihw;
+ int start_address;
+ SANE_Status status;
+
+ DBG (DBG_proc, "genesys_send_offset_and_shading (size = %d)\n", size);
+
+ /* ASIC higher than gl843 doesn't have register 2A/2B, so we route to
+ * a per ASIC shading data loading function if available */
+ if(dev->model->cmd_set->send_shading_data!=NULL)
+ {
+ status=dev->model->cmd_set->send_shading_data(dev, data, size);
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* gl646, gl84[123] case */
+ dpihw = sanei_genesys_read_reg_from_set (dev->reg, 0x05) >> 6;
+
+ /* TODO invert the test so only the 2 models behaving like that are
+ * tested instead of adding all the others */
+ /* many scanners send coefficient for lineart/gray like in color mode */
+ if (dev->settings.scan_mode < 2
+ && dev->model->ccd_type != CCD_PLUSTEK3800
+ && dev->model->ccd_type != CCD_KVSS080
+ && dev->model->ccd_type != CCD_G4050
+ && dev->model->ccd_type != CCD_CS4400F
+ && dev->model->ccd_type != CCD_CS8400F
+ && dev->model->ccd_type != CCD_DSMOBILE600
+ && dev->model->ccd_type != CCD_XP300
+ && dev->model->ccd_type != CCD_DP665
+ && dev->model->ccd_type != CCD_DP685
+ && dev->model->ccd_type != CCD_ROADWARRIOR
+ && dev->model->ccd_type != CCD_HP2300
+ && dev->model->ccd_type != CCD_HP2400
+ && dev->model->ccd_type != CCD_HP3670
+ && dev->model->ccd_type != CCD_5345) /* lineart, halftone */
+ {
+ if (dpihw == 0) /* 600 dpi */
+ start_address = 0x02a00;
+ else if (dpihw == 1) /* 1200 dpi */
+ start_address = 0x05500;
+ else if (dpihw == 2) /* 2400 dpi */
+ start_address = 0x0a800;
+ else /* reserved */
+ return SANE_STATUS_INVAL;
+ }
+ else /* color */
+ start_address = 0x00;
+
+ status = sanei_genesys_set_buffer_address (dev, start_address);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_send_offset_and_shading: failed to set buffer address: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = dev->model->cmd_set->bulk_write_data (dev, 0x3c, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_send_offset_and_shading: failed to send shading table: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBGCOMPLETED;
+
+ return SANE_STATUS_GOOD;
+}
+
+/* ? */
+SANE_Status
+sanei_genesys_init_shading_data (Genesys_Device * dev, int pixels_per_line)
+{
+ SANE_Status status;
+ uint8_t *shading_data, *shading_data_ptr;
+ int channels;
+ int i;
+
+ /* these models don't need to init shading data due to the use of specific send shading data
+ function */
+ if (dev->model->ccd_type==CCD_KVSS080
+ || dev->model->ccd_type==CCD_G4050
+ || dev->model->ccd_type==CCD_CS4400F
+ || dev->model->ccd_type==CCD_CS8400F
+ || dev->model->cmd_set->send_shading_data!=NULL)
+ return SANE_STATUS_GOOD;
+
+ DBG (DBG_proc, "sanei_genesys_init_shading_data (pixels_per_line = %d)\n",
+ pixels_per_line);
+
+ if (dev->settings.scan_mode >= 2) /* 3 pass or single pass color */
+ channels = 3;
+ else
+ channels = 1;
+
+ shading_data = malloc (pixels_per_line * 4 * channels); /* 16 bit black, 16 bit white */
+ if (!shading_data)
+ {
+ DBG (DBG_error,
+ "sanei_genesys_init_shading_data: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ shading_data_ptr = shading_data;
+
+ for (i = 0; i < pixels_per_line * channels; i++)
+ {
+ *shading_data_ptr++ = 0x00; /* dark lo */
+ *shading_data_ptr++ = 0x00; /* dark hi */
+ *shading_data_ptr++ = 0x00; /* white lo */
+ *shading_data_ptr++ = 0x40; /* white hi -> 0x4000 */
+ }
+
+ status =
+ genesys_send_offset_and_shading (dev, shading_data,
+ pixels_per_line * 4 * channels);
+ if (status != SANE_STATUS_GOOD)
+ DBG (DBG_error,
+ "sanei_genesys_init_shading_data: failed to send shading data: %s\n",
+ sane_strstatus (status));
+
+ free (shading_data);
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/* Find the position of the reference point:
+ takes gray level 8 bits data and find
+ first CCD usable pixel and top of scanning area */
+SANE_Status
+sanei_genesys_search_reference_point (Genesys_Device * dev, uint8_t * data,
+ int start_pixel, int dpi, int width,
+ int height)
+{
+ int x, y;
+ int current, left, top = 0;
+ uint8_t *image;
+ int size, count;
+ int level = 80; /* edge threshold level */
+
+ /*sanity check */
+ if ((width < 3) || (height < 3))
+ return SANE_STATUS_INVAL;
+
+ /* transformed image data */
+ size = width * height;
+ image = malloc (size);
+ if (!image)
+ {
+ DBG (DBG_error,
+ "sanei_genesys_search_reference_point: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ /* laplace filter to denoise picture */
+ memcpy (image, data, size); /* to initialize unprocessed part of the image buffer */
+ for (y = 1; y < height - 1; y++)
+ for (x = 1; x < width - 1; x++)
+ {
+ image[y * width + x] =
+ (data[(y - 1) * width + x + 1] + 2 * data[(y - 1) * width + x] +
+ data[(y - 1) * width + x - 1] + 2 * data[y * width + x + 1] +
+ 4 * data[y * width + x] + 2 * data[y * width + x - 1] +
+ data[(y + 1) * width + x + 1] + 2 * data[(y + 1) * width + x] +
+ data[(y + 1) * width + x - 1]) / 16;
+ }
+
+ memcpy (data, image, size);
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("laplace.pnm", image, 8, 1, width, height);
+
+ /* apply X direction sobel filter
+ -1 0 1
+ -2 0 2
+ -1 0 1
+ and finds threshold level
+ */
+ level = 0;
+ for (y = 2; y < height - 2; y++)
+ for (x = 2; x < width - 2; x++)
+ {
+ current =
+ data[(y - 1) * width + x + 1] - data[(y - 1) * width + x - 1] +
+ 2 * data[y * width + x + 1] - 2 * data[y * width + x - 1] +
+ data[(y + 1) * width + x + 1] - data[(y + 1) * width + x - 1];
+ if (current < 0)
+ current = -current;
+ if (current > 255)
+ current = 255;
+ image[y * width + x] = current;
+ if (current > level)
+ level = current;
+ }
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("xsobel.pnm", image, 8, 1, width, height);
+
+ /* set up detection level */
+ level = level / 3;
+
+ /* find left black margin first
+ todo: search top before left
+ we average the result of N searches */
+ left = 0;
+ count = 0;
+ for (y = 2; y < 11; y++)
+ {
+ x = 8;
+ while ((x < width / 2) && (image[y * width + x] < level))
+ {
+ image[y * width + x] = 255;
+ x++;
+ }
+ count++;
+ left += x;
+ }
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("detected-xsobel.pnm", image, 8, 1, width,
+ height);
+ left = left / count;
+
+ /* turn it in CCD pixel at full sensor optical resolution */
+ dev->sensor.CCD_start_xoffset =
+ start_pixel + (left * dev->sensor.optical_res) / dpi;
+
+ /* find top edge by detecting black strip */
+ /* apply Y direction sobel filter
+ -1 -2 -1
+ 0 0 0
+ 1 2 1
+ */
+ level = 0;
+ for (y = 2; y < height - 2; y++)
+ for (x = 2; x < width - 2; x++)
+ {
+ current =
+ -data[(y - 1) * width + x + 1] - 2 * data[(y - 1) * width + x] -
+ data[(y - 1) * width + x - 1] + data[(y + 1) * width + x + 1] +
+ 2 * data[(y + 1) * width + x] + data[(y + 1) * width + x - 1];
+ if (current < 0)
+ current = -current;
+ if (current > 255)
+ current = 255;
+ image[y * width + x] = current;
+ if (current > level)
+ level = current;
+ }
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("ysobel.pnm", image, 8, 1, width, height);
+
+ /* set up detection level */
+ level = level / 3;
+
+ /* search top of horizontal black stripe : TODO yet another flag */
+ if (dev->model->ccd_type == CCD_5345
+ && dev->model->motor_type == MOTOR_5345)
+ {
+ top = 0;
+ count = 0;
+ for (x = width / 2; x < width - 1; x++)
+ {
+ y = 2;
+ while ((y < height) && (image[x + y * width] < level))
+ {
+ image[y * width + x] = 255;
+ y++;
+ }
+ count++;
+ top += y;
+ }
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("detected-ysobel.pnm", image, 8, 1,
+ width, height);
+ top = top / count;
+
+ /* bottom of black stripe is of fixed witdh, this hardcoded value
+ * will be moved into device struct if more such values are needed */
+ top += 10;
+ dev->model->y_offset_calib = SANE_FIX ((top * MM_PER_INCH) / dpi);
+ DBG (DBG_info,
+ "sanei_genesys_search_reference_point: black stripe y_offset = %f mm \n",
+ SANE_UNFIX (dev->model->y_offset_calib));
+ }
+
+ /* find white corner in dark area : TODO yet another flag */
+ if ((dev->model->ccd_type == CCD_HP2300
+ && dev->model->motor_type == MOTOR_HP2300)
+ || (dev->model->ccd_type == CCD_HP2400
+ && dev->model->motor_type == MOTOR_HP2400)
+ || (dev->model->ccd_type == CCD_HP3670
+ && dev->model->motor_type == MOTOR_HP3670))
+ {
+ top = 0;
+ count = 0;
+ for (x = 10; x < 60; x++)
+ {
+ y = 2;
+ while ((y < height) && (image[x + y * width] < level))
+ y++;
+ top += y;
+ count++;
+ }
+ top = top / count;
+ dev->model->y_offset_calib = SANE_FIX ((top * MM_PER_INCH) / dpi);
+ DBG (DBG_info,
+ "sanei_genesys_search_reference_point: white corner y_offset = %f mm\n",
+ SANE_UNFIX (dev->model->y_offset_calib));
+ }
+
+ free (image);
+ DBG (DBG_proc,
+ "sanei_genesys_search_reference_point: CCD_start_xoffset = %d, left = %d, top = %d\n",
+ dev->sensor.CCD_start_xoffset, left, top);
+
+ return SANE_STATUS_GOOD;
+}
+
+
+void
+sanei_genesys_calculate_zmode2 (SANE_Bool two_table,
+ uint32_t exposure_time,
+ uint16_t * slope_table,
+ int reg21,
+ int move, int reg22, uint32_t * z1,
+ uint32_t * z2)
+{
+ int i;
+ int sum;
+ DBG (DBG_info, "sanei_genesys_calculate_zmode2: two_table=%d\n", two_table);
+
+ /* acceleration total time */
+ sum = 0;
+ for (i = 0; i < reg21; i++)
+ sum += slope_table[i];
+
+ /* compute Z1MOD */
+ /* c=sum(slope_table;reg21)
+ d=reg22*cruising speed
+ Z1MOD=(c+d) % exposure_time */
+ *z1 = (sum + reg22 * slope_table[reg21 - 1]) % exposure_time;
+
+ /* compute Z2MOD */
+ /* a=sum(slope_table;reg21), b=move or 1 if 2 tables */
+ /* Z2MOD=(a+b) % exposure_time */
+ if (!two_table)
+ sum = sum + (move * slope_table[reg21 - 1]);
+ else
+ sum = sum + slope_table[reg21 - 1];
+ *z2 = sum % exposure_time;
+}
+
+
+/* huh? */
+/* todo: double check */
+/* Z1 and Z2 seem to be a time to synchronize with clock or a phase correction */
+/* steps_sum is the result of create_slope_table */
+/* last_speed is the last entry of the slope_table */
+/* feedl is registers 3d,3e,3f */
+/* fastfed is register 02 bit 3 */
+/* scanfed is register 1f */
+/* fwdstep is register 22 */
+/* tgtime is register 6c bit 6+7 >> 6 */
+
+void
+sanei_genesys_calculate_zmode (uint32_t exposure_time,
+ uint32_t steps_sum, uint16_t last_speed,
+ uint32_t feedl, uint8_t fastfed,
+ uint8_t scanfed, uint8_t fwdstep,
+ uint8_t tgtime, uint32_t * z1, uint32_t * z2)
+{
+ uint8_t exposure_factor;
+
+ exposure_factor = pow (2, tgtime); /* todo: originally, this is always 2^0 ! */
+
+ /* Z1 is for buffer-full backward forward moving */
+ *z1 =
+ exposure_factor * ((steps_sum + fwdstep * last_speed) % exposure_time);
+
+ /* Z2 is for acceleration before scan */
+ if (fastfed) /* two curve mode */
+ {
+ *z2 =
+ exposure_factor * ((steps_sum + scanfed * last_speed) %
+ exposure_time);
+ }
+ else /* one curve mode */
+ {
+ *z2 =
+ exposure_factor * ((steps_sum + feedl * last_speed) % exposure_time);
+ }
+}
+
+
+static void
+genesys_adjust_gain (double *applied_multi,
+ uint8_t * new_gain, double multi, uint8_t gain)
+{
+ double voltage, original_voltage;
+
+ DBG (DBG_proc, "genesys_adjust_gain: multi=%f, gain=%d\n", multi, gain);
+
+ voltage = 0.5 + gain * 0.25;
+ original_voltage = voltage;
+
+ voltage *= multi;
+
+ *new_gain = (uint8_t) ((voltage - 0.5) * 4);
+ if (*new_gain > 0x0e)
+ *new_gain = 0x0e;
+
+ voltage = 0.5 + (*new_gain) * 0.25;
+
+ *applied_multi = voltage / original_voltage;
+
+ DBG (DBG_proc,
+ "genesys_adjust_gain: orig voltage=%.2f, new voltage=%.2f, "
+ "*applied_multi=%f, *new_gain=%d\n", original_voltage, voltage,
+ *applied_multi, *new_gain);
+ return;
+}
+
+
+/* todo: is return status necessary (unchecked?) */
+static SANE_Status
+genesys_average_white (Genesys_Device * dev, int channels, int channel,
+ uint8_t * data, int size, int *max_average)
+{
+ int gain_white_ref, sum, range;
+ int average;
+ int i;
+
+ DBG (DBG_proc,
+ "genesys_average_white: channels=%d, channel=%d, size=%d\n",
+ channels, channel, size);
+
+ range = size / 50;
+
+ if (dev->settings.scan_method == SCAN_METHOD_TRANSPARENCY) /* transparency mode */
+ gain_white_ref = dev->sensor.fau_gain_white_ref * 256;
+ else
+ gain_white_ref = dev->sensor.gain_white_ref * 256;
+
+ if (range < 1)
+ range = 1;
+
+ size = size / (2 * range * channels);
+
+ data += (channel * 2);
+
+ *max_average = 0;
+
+ while (size--)
+ {
+ sum = 0;
+ for (i = 0; i < range; i++)
+ {
+ sum += (*data);
+ sum += *(data + 1) * 256;
+ data += (2 * channels); /* byte based */
+ }
+
+ average = (sum / range);
+ if (average > *max_average)
+ *max_average = average;
+ }
+
+ DBG (DBG_proc,
+ "genesys_average_white: max_average=%d, gain_white_ref = %d, finished\n",
+ *max_average, gain_white_ref);
+
+ if (*max_average >= gain_white_ref)
+ return SANE_STATUS_INVAL;
+
+ return SANE_STATUS_GOOD;
+}
+
+/* todo: understand, values are too high */
+static int
+genesys_average_black (Genesys_Device * dev, int channel,
+ uint8_t * data, int pixels)
+{
+ int i;
+ int sum;
+ int pixel_step;
+
+ DBG (DBG_proc, "genesys_average_black: channel=%d, pixels=%d\n",
+ channel, pixels);
+
+ sum = 0;
+
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR) /* single pass color */
+ {
+ data += (channel * 2);
+ pixel_step = 3 * 2;
+ }
+ else
+ {
+ pixel_step = 2;
+ }
+
+ for (i = 0; i < pixels; i++)
+ {
+ sum += *data;
+ sum += *(data + 1) * 256;
+
+ data += pixel_step;
+ }
+
+ DBG (DBG_proc, "genesys_average_black = %d\n", sum / pixels);
+
+ return (int) (sum / pixels);
+}
+
+
+/* todo: check; it works but the lines 1, 2, and 3 are too dark even with the
+ same offset and gain settings? */
+static SANE_Status
+genesys_coarse_calibration (Genesys_Device * dev)
+{
+ int size;
+ int black_pixels;
+ int white_average;
+ int channels;
+ SANE_Status status;
+ uint8_t offset[4] = { 0xa0, 0x00, 0xa0, 0x40 }; /* first value isn't used */
+ uint16_t white[12], dark[12];
+ int i, j;
+ uint8_t *calibration_data, *all_data;
+
+ DBG (DBG_info, "genesys_coarse_calibration (scan_mode = %d)\n",
+ dev->settings.scan_mode);
+
+ black_pixels = dev->sensor.black_pixels
+ * dev->settings.xres / dev->sensor.optical_res;
+
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR) /* single pass color */
+ channels = 3;
+ else
+ channels = 1;
+
+ DBG (DBG_info, "channels %d y_size %d xres %d\n",
+ channels, dev->model->y_size, dev->settings.xres);
+ size =
+ channels * 2 * SANE_UNFIX (dev->model->y_size) * dev->settings.xres /
+ 25.4;
+ /* 1 1 mm 1/inch inch/mm */
+
+ calibration_data = malloc (size);
+ if (!calibration_data)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: failed to allocate memory(%d bytes)\n",
+ size);
+ return SANE_STATUS_NO_MEM;
+ }
+
+ all_data = calloc (1, size * 4);
+
+ status = dev->model->cmd_set->set_fe (dev, AFE_INIT);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to set frontend: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ free(all_data);
+ free(calibration_data);
+ return status;
+ }
+
+ dev->frontend.sign[0] = 0;
+ dev->frontend.sign[1] = 0;
+ dev->frontend.sign[2] = 0;
+ dev->frontend.gain[0] = 2;
+ dev->frontend.gain[1] = 2;
+ dev->frontend.gain[2] = 2; /* todo: ? was 2 */
+ dev->frontend.offset[0] = offset[0];
+ dev->frontend.offset[1] = offset[0];
+ dev->frontend.offset[2] = offset[0];
+
+ for (i = 0; i < 4; i++) /* read 4 lines */
+ {
+ if (i < 3) /* first 3 lines */
+ {
+ dev->frontend.offset[0] = offset[i];
+ dev->frontend.offset[1] = offset[i];
+ dev->frontend.offset[2] = offset[i];
+ }
+
+ if (i == 1) /* second line */
+ {
+ double applied_multi;
+ double gain_white_ref;
+
+ if (dev->settings.scan_method == SCAN_METHOD_TRANSPARENCY) /* Transparency */
+ gain_white_ref = dev->sensor.fau_gain_white_ref * 256;
+ else
+ gain_white_ref = dev->sensor.gain_white_ref * 256;
+ /* white and black are defined downwards */
+
+ genesys_adjust_gain (&applied_multi,
+ &dev->frontend.gain[0],
+ gain_white_ref / (white[0] - dark[0]),
+ dev->frontend.gain[0]);
+ genesys_adjust_gain (&applied_multi,
+ &dev->frontend.gain[1],
+ gain_white_ref / (white[1] - dark[1]),
+ dev->frontend.gain[1]);
+ genesys_adjust_gain (&applied_multi,
+ &dev->frontend.gain[2],
+ gain_white_ref / (white[2] - dark[2]),
+ dev->frontend.gain[2]);
+
+ dev->frontend.gain[0] = dev->frontend.gain[1] =
+ dev->frontend.gain[2] = 2;
+
+ status =
+ sanei_genesys_fe_write_data (dev, 0x28, dev->frontend.gain[0]);
+ if (status != SANE_STATUS_GOOD) /* todo: this was 0x28 + 3 ? */
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: Failed to write gain[0]: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status =
+ sanei_genesys_fe_write_data (dev, 0x29, dev->frontend.gain[1]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: Failed to write gain[1]: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status =
+ sanei_genesys_fe_write_data (dev, 0x2a, dev->frontend.gain[2]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: Failed to write gain[2]: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ if (i == 3) /* last line */
+ {
+ double x, y, rate;
+
+ for (j = 0; j < 3; j++)
+ {
+
+ x =
+ (double) (dark[(i - 2) * 3 + j] -
+ dark[(i - 1) * 3 + j]) * 254 / (offset[i - 1] / 2 -
+ offset[i - 2] / 2);
+ y = x - x * (offset[i - 1] / 2) / 254 - dark[(i - 1) * 3 + j];
+ rate = (x - DARK_VALUE - y) * 254 / x + 0.5;
+
+ dev->frontend.offset[j] = (uint8_t) (rate);
+
+ if (dev->frontend.offset[j] > 0x7f)
+ dev->frontend.offset[j] = 0x7f;
+ dev->frontend.offset[j] <<= 1;
+ }
+ }
+ status =
+ sanei_genesys_fe_write_data (dev, 0x20, dev->frontend.offset[0]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: Failed to write offset[0]: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status =
+ sanei_genesys_fe_write_data (dev, 0x21, dev->frontend.offset[1]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: Failed to write offset[1]: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status =
+ sanei_genesys_fe_write_data (dev, 0x22, dev->frontend.offset[2]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: Failed to write offset[2]: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_info,
+ "genesys_coarse_calibration: doing scan: sign: %d/%d/%d, gain: %d/%d/%d, offset: %d/%d/%d\n",
+ dev->frontend.sign[0], dev->frontend.sign[1],
+ dev->frontend.sign[2], dev->frontend.gain[0],
+ dev->frontend.gain[1], dev->frontend.gain[2],
+ dev->frontend.offset[0], dev->frontend.offset[1],
+ dev->frontend.offset[2]);
+
+ status =
+ dev->model->cmd_set->begin_scan (dev, dev->calib_reg, SANE_FALSE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: Failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status =
+ sanei_genesys_read_data_from_scanner (dev, calibration_data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: Failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ memcpy (all_data + i * size, calibration_data, size);
+ if (i == 3) /* last line */
+ {
+ SANE_Byte *all_data_8 = malloc (size * 4 / 2);
+ unsigned int count;
+
+ for (count = 0; count < (unsigned int) (size * 4 / 2); count++)
+ all_data_8[count] = all_data[count * 2 + 1];
+ status =
+ sanei_genesys_write_pnm_file ("coarse.pnm", all_data_8, 8,
+ channels, size / 6, 4);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: sanei_genesys_write_pnm_file failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ status = dev->model->cmd_set->end_scan (dev, dev->calib_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_coarse_calibration: Failed to end scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR) /* single pass color */
+ {
+ for (j = 0; j < 3; j++)
+ {
+ genesys_average_white (dev, 3, j, calibration_data, size,
+ &white_average);
+ white[i * 3 + j] = white_average;
+ dark[i * 3 + j] =
+ genesys_average_black (dev, j, calibration_data,
+ black_pixels);
+ DBG (DBG_info,
+ "genesys_coarse_calibration: white[%d]=%d, black[%d]=%d\n",
+ i * 3 + j, white[i * 3 + j], i * 3 + j, dark[i * 3 + j]);
+ }
+ }
+ else /* one color-component modes */
+ {
+ genesys_average_white (dev, 1, 0, calibration_data, size,
+ &white_average);
+ white[i * 3 + 0] = white[i * 3 + 1] = white[i * 3 + 2] =
+ white_average;
+ dark[i * 3 + 0] = dark[i * 3 + 1] = dark[i * 3 + 2] =
+ genesys_average_black (dev, 0, calibration_data, black_pixels);
+ }
+
+ if (i == 3)
+ {
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR) /* single pass color */
+ {
+ /* todo: huh? */
+ dev->dark[0] =
+ (uint16_t) (1.6925 * dark[i * 3 + 0] + 0.1895 * 256);
+ dev->dark[1] =
+ (uint16_t) (1.4013 * dark[i * 3 + 1] + 0.3147 * 256);
+ dev->dark[2] =
+ (uint16_t) (1.2931 * dark[i * 3 + 2] + 0.1558 * 256);
+ }
+ else /* one color-component modes */
+ {
+ switch (dev->settings.color_filter)
+ {
+ case 0:
+ default:
+ dev->dark[0] =
+ (uint16_t) (1.6925 * dark[i * 3 + 0] +
+ (1.1895 - 1.0) * 256);
+ dev->dark[1] = dev->dark[2] = dev->dark[0];
+ break;
+
+ case 1:
+ dev->dark[1] =
+ (uint16_t) (1.4013 * dark[i * 3 + 1] +
+ (1.3147 - 1.0) * 256);
+ dev->dark[0] = dev->dark[2] = dev->dark[1];
+ break;
+
+ case 2:
+ dev->dark[2] =
+ (uint16_t) (1.2931 * dark[i * 3 + 2] +
+ (1.1558 - 1.0) * 256);
+ dev->dark[0] = dev->dark[1] = dev->dark[2];
+ break;
+ }
+ }
+ }
+ } /* for (i = 0; i < 4; i++) */
+
+ free(all_data);
+ DBG (DBG_info,
+ "genesys_coarse_calibration: final: sign: %d/%d/%d, gain: %d/%d/%d, offset: %d/%d/%d\n",
+ dev->frontend.sign[0], dev->frontend.sign[1], dev->frontend.sign[2],
+ dev->frontend.gain[0], dev->frontend.gain[1], dev->frontend.gain[2],
+ dev->frontend.offset[0], dev->frontend.offset[1],
+ dev->frontend.offset[2]);
+ DBGCOMPLETED;
+
+ return status;
+}
+
+/* Averages image data.
+ average_data and calibration_data are little endian 16 bit words.
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+void
+genesys_average_data (uint8_t * average_data,
+ uint8_t * calibration_data,
+ uint32_t lines,
+ uint32_t pixel_components_per_line)
+{
+ uint32_t x, y;
+ uint32_t sum;
+
+ for (x = 0; x < pixel_components_per_line; x++)
+ {
+ sum = 0;
+ for (y = 0; y < lines; y++)
+ {
+ sum += calibration_data[(x + y * pixel_components_per_line) * 2];
+ sum +=
+ calibration_data[(x + y * pixel_components_per_line) * 2 +
+ 1] * 256;
+ }
+ sum /= lines;
+ *average_data++ = sum & 255;
+ *average_data++ = sum / 256;
+ }
+}
+
+/**
+ * scans a white area with motor and lamp off to get the per CCD pixel offset
+ * that will be used to compute shading coefficient
+ * @param dev scanner's device
+ * @return SANE_STATUS_GOOD if OK, else an error
+ */
+static SANE_Status
+genesys_dark_shading_calibration (Genesys_Device * dev)
+{
+ SANE_Status status;
+ size_t size;
+ uint32_t pixels_per_line;
+ uint8_t channels;
+ uint8_t *calibration_data;
+ SANE_Bool motor;
+
+ DBGSTART;
+
+ /* end pixel - start pixel */
+ pixels_per_line = dev->calib_pixels;
+ channels = dev->calib_channels;
+
+ FREE_IFNOT_NULL (dev->dark_average_data);
+
+ dev->average_size = channels * 2 * pixels_per_line;
+
+ dev->dark_average_data = malloc (dev->average_size);
+ if (!dev->dark_average_data)
+ {
+ DBG (DBG_error,
+ "genesys_dark_shading_calibration: failed to allocate average memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ /* size is size in bytes for scanarea: bytes_per_line * lines */
+ size = channels * 2 * pixels_per_line * (dev->calib_lines + 1);
+
+ calibration_data = malloc (size);
+ if (!calibration_data)
+ {
+ DBG (DBG_error,
+ "genesys_dark_shading_calibration: failed to allocate calibration data memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ motor=SANE_TRUE;
+ if (dev->model->flags & GENESYS_FLAG_SHADING_NO_MOVE)
+ {
+ motor=SANE_FALSE;
+ }
+
+ /* turn off motor and lamp power for flatbed scanners, but not for sheetfed scanners
+ * because they have a calibration sheet with a sufficient black strip */
+ if (dev->model->is_sheetfed == SANE_FALSE)
+ {
+ dev->model->cmd_set->set_lamp_power (dev, dev->calib_reg, SANE_FALSE);
+ dev->model->cmd_set->set_motor_power (dev->calib_reg, motor);
+ }
+ else
+ {
+ dev->model->cmd_set->set_lamp_power (dev, dev->calib_reg, SANE_TRUE);
+ dev->model->cmd_set->set_motor_power (dev->calib_reg, motor);
+ }
+
+ status =
+ dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg,
+ dev->model->
+ cmd_set->bulk_full_size ());
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_dark_shading_calibration: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ usleep (200 * 1000); /* wait 200 ms: lamp needs some time to get dark */
+
+ status = dev->model->cmd_set->begin_scan (dev, dev->calib_reg, SANE_FALSE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_dark_shading_calibration: Failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_read_data_from_scanner (dev, calibration_data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_dark_shading_calibration: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = dev->model->cmd_set->end_scan (dev, dev->calib_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_dark_shading_calibration: failed to end scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ genesys_average_data (dev->dark_average_data, calibration_data,
+ dev->calib_lines,
+ pixels_per_line * channels);
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sanei_genesys_write_pnm_file ("black_shading.pnm", calibration_data, 16,
+ channels, pixels_per_line,
+ dev->calib_lines);
+ sanei_genesys_write_pnm_file ("black_average.pnm",
+ dev->dark_average_data, 16, channels,
+ pixels_per_line, 1);
+ }
+
+ free (calibration_data);
+
+ DBGCOMPLETED;
+
+ return SANE_STATUS_GOOD;
+}
+
+/*
+ * this function builds dummy dark calibration data so that we can
+ * compute shading coefficient in a clean way
+ * todo: current values are hardcoded, we have to find if they
+ * can be computed from previous calibration data (when doing offset
+ * calibration ?)
+ */
+static SANE_Status
+genesys_dummy_dark_shading (Genesys_Device * dev)
+{
+ uint32_t pixels_per_line;
+ uint8_t channels;
+ uint32_t x, skip, xend;
+ int dummy1, dummy2, dummy3; /* dummy black average per channel */
+
+ DBGSTART;
+
+ pixels_per_line = dev->calib_pixels;
+ channels = dev->calib_channels;
+
+ FREE_IFNOT_NULL (dev->dark_average_data);
+
+ dev->average_size = channels * 2 * pixels_per_line;
+ dev->dark_average_data = malloc (dev->average_size);
+ if (!dev->dark_average_data)
+ {
+ DBG (DBG_error,
+ "genesys_dummy_dark_shading: failed to allocate average memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+ memset (dev->dark_average_data, 0x00, channels * 2 * pixels_per_line);
+
+ /* we average values on 'the left' where CCD pixels are under casing and
+ give darkest values. We then use these as dummy dark calibration */
+ if (dev->settings.xres <= dev->sensor.optical_res / 2)
+ {
+ skip = 4;
+ xend = 36;
+ }
+ else
+ {
+ skip = 4;
+ xend = 68;
+ }
+ if (dev->model->ccd_type==CCD_G4050
+ || dev->model->ccd_type==CCD_CS4400F
+ || dev->model->ccd_type==CCD_CS8400F
+ || dev->model->ccd_type==CCD_KVSS080)
+ {
+ skip = 2;
+ xend = dev->sensor.black_pixels;
+ }
+
+ /* average each channels on half left margin */
+ dummy1 = 0;
+ dummy2 = 0;
+ dummy3 = 0;
+
+ for (x = skip + 1; x <= xend; x++)
+ {
+ dummy1 +=
+ dev->white_average_data[channels * 2 * x] +
+ 256 * dev->white_average_data[channels * 2 * x + 1];
+ if (channels > 1)
+ {
+ dummy2 +=
+ (dev->white_average_data[channels * 2 * x + 2] +
+ 256 * dev->white_average_data[channels * 2 * x + 3]);
+ dummy3 +=
+ (dev->white_average_data[channels * 2 * x + 4] +
+ 256 * dev->white_average_data[channels * 2 * x + 5]);
+ }
+ }
+
+ dummy1 /= (xend - skip);
+ if (channels > 1)
+ {
+ dummy2 /= (xend - skip);
+ dummy3 /= (xend - skip);
+ }
+ DBG (DBG_proc,
+ "genesys_dummy_dark_shading: dummy1=%d, dummy2=%d, dummy3=%d \n",
+ dummy1, dummy2, dummy3);
+
+ /* fill dark_average */
+ for (x = 0; x < pixels_per_line; x++)
+ {
+ dev->dark_average_data[channels * 2 * x] = dummy1 & 0xff;
+ dev->dark_average_data[channels * 2 * x + 1] = dummy1 >> 8;
+ if (channels > 1)
+ {
+ dev->dark_average_data[channels * 2 * x + 2] = dummy2 & 0xff;
+ dev->dark_average_data[channels * 2 * x + 3] = dummy2 >> 8;
+ dev->dark_average_data[channels * 2 * x + 4] = dummy3 & 0xff;
+ dev->dark_average_data[channels * 2 * x + 5] = dummy3 >> 8;
+ }
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+genesys_white_shading_calibration (Genesys_Device * dev)
+{
+ SANE_Status status;
+ size_t size;
+ uint32_t pixels_per_line;
+ uint8_t *calibration_data;
+ uint8_t channels;
+ SANE_Bool motor;
+
+ DBG (DBG_proc, "genesys_white_shading_calibration (lines = %d)\n",
+ (unsigned int)dev->calib_lines);
+
+ pixels_per_line = dev->calib_pixels;
+ channels = dev->calib_channels;
+
+ if (dev->white_average_data)
+ free (dev->white_average_data);
+
+ dev->white_average_data = malloc (channels * 2 * pixels_per_line);
+ if (!dev->white_average_data)
+ {
+ DBG (DBG_error,
+ "genesys_white_shading_calibration: failed to allocate average memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ size = channels * 2 * pixels_per_line * (dev->calib_lines + 1);
+
+ calibration_data = malloc (size);
+ if (!calibration_data)
+ {
+ DBG (DBG_error,
+ "genesys_white_shading_calibration: failed to allocate calibration memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ motor=SANE_TRUE;
+ if (dev->model->flags & GENESYS_FLAG_SHADING_NO_MOVE)
+ {
+ motor=SANE_FALSE;
+ }
+
+ /* turn on motor and lamp power */
+ dev->model->cmd_set->set_lamp_power (dev, dev->calib_reg, SANE_TRUE);
+ dev->model->cmd_set->set_motor_power (dev->calib_reg, motor);
+ if (dev->model->flags & GENESYS_FLAG_SHADING_REPARK)
+ {
+ status = dev->model->cmd_set->slow_back_home (dev, SANE_TRUE);
+ }
+
+ status =
+ dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg,
+ dev->model->
+ cmd_set->bulk_full_size ());
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_white_shading_calibration: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ if (dev->model->flags & GENESYS_FLAG_DARK_CALIBRATION)
+ usleep (500 * 1000); /* wait 500ms to make sure lamp is bright again */
+
+ status = dev->model->cmd_set->begin_scan (dev, dev->calib_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_white_shading_calibration: Failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_read_data_from_scanner (dev, calibration_data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_white_shading_calibration: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = dev->model->cmd_set->end_scan (dev, dev->calib_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_white_shading_calibration: failed to end scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("white_shading.pnm", calibration_data, 16,
+ channels, pixels_per_line,
+ dev->calib_lines);
+
+ genesys_average_data (dev->white_average_data, calibration_data,
+ dev->calib_lines,
+ pixels_per_line * channels);
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("white_average.pnm",
+ dev->white_average_data, 16, channels,
+ pixels_per_line, 1);
+
+ free (calibration_data);
+
+ /* in case we haven't done dark calibration, build dummy data from white_average */
+ if (!(dev->model->flags & GENESYS_FLAG_DARK_CALIBRATION))
+ {
+ status = genesys_dummy_dark_shading (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_white_shading_calibration: failed to do dummy dark shading calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ if (dev->model->flags & GENESYS_FLAG_SHADING_REPARK)
+ {
+ status = dev->model->cmd_set->slow_back_home (dev, SANE_TRUE);
+ }
+
+ DBGCOMPLETED;
+
+ return status;
+}
+
+/* This calibration uses a scan over the calibration target, comprising a
+ * black and a white strip. (So the motor must be on.)
+ */
+static SANE_Status
+genesys_dark_white_shading_calibration (Genesys_Device * dev)
+{
+ SANE_Status status;
+ size_t size;
+ uint32_t pixels_per_line;
+ uint8_t *calibration_data, *average_white, *average_dark;
+ uint8_t channels;
+ unsigned int x;
+ int y;
+ uint32_t dark, white, dark_sum, white_sum, dark_count, white_count, col,
+ dif;
+ SANE_Bool motor;
+
+
+ DBG (DBG_proc, "genesys_black_white_shading_calibration (lines = %d)\n",
+ (unsigned int)dev->calib_lines);
+
+ pixels_per_line = dev->calib_pixels;
+ channels = dev->calib_channels;
+
+ if (dev->white_average_data)
+ free (dev->white_average_data);
+
+ dev->average_size = channels * 2 * pixels_per_line;
+
+ dev->white_average_data = malloc (dev->average_size);
+ if (!dev->white_average_data)
+ {
+ DBG (DBG_error,
+ "genesys_dark_white_shading_calibration: failed to allocate average memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ if (dev->dark_average_data)
+ free (dev->dark_average_data);
+
+ dev->dark_average_data = malloc (channels * 2 * pixels_per_line);
+ if (!dev->dark_average_data)
+ {
+ DBG (DBG_error,
+ "genesys_dark_white_shading_shading_calibration: failed to allocate average memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ size = channels * 2 * pixels_per_line * dev->calib_lines;
+
+ calibration_data = malloc (size);
+ if (!calibration_data)
+ {
+ DBG (DBG_error,
+ "genesys_dark_white_shading_calibration: failed to allocate calibration memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ motor=SANE_TRUE;
+ if (dev->model->flags & GENESYS_FLAG_SHADING_NO_MOVE)
+ {
+ motor=SANE_FALSE;
+ }
+
+ /* turn on motor and lamp power */
+ dev->model->cmd_set->set_lamp_power (dev, dev->calib_reg, SANE_TRUE);
+ dev->model->cmd_set->set_motor_power (dev->calib_reg, motor);
+
+ status =
+ dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg,
+ dev->model->
+ cmd_set->bulk_full_size ());
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_dark_white_shading_calibration: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = dev->model->cmd_set->begin_scan (dev, dev->calib_reg, SANE_FALSE);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_dark_white_shading_calibration: Failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_read_data_from_scanner (dev, calibration_data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_dark_white_shading_calibration: Failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = dev->model->cmd_set->end_scan (dev, dev->calib_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (calibration_data);
+ DBG (DBG_error,
+ "genesys_dark_white_shading_calibration: Failed to end scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("black_white_shading.pnm", calibration_data,
+ 16, channels, pixels_per_line,
+ dev->calib_lines);
+
+
+ average_white = dev->white_average_data;
+ average_dark = dev->dark_average_data;
+
+ for (x = 0; x < pixels_per_line * channels; x++)
+ {
+ dark = 0xffff;
+ white = 0;
+
+ for (y = 0; y < (int)dev->calib_lines; y++)
+ {
+ col = calibration_data[(x + y * pixels_per_line * channels) * 2];
+ col |=
+ calibration_data[(x + y * pixels_per_line * channels) * 2 +
+ 1] << 8;
+
+ if (col > white)
+ white = col;
+ if (col < dark)
+ dark = col;
+ }
+
+ dif = white - dark;
+
+ dark = dark + dif / 8;
+ white = white - dif / 8;
+
+ dark_count = 0;
+ dark_sum = 0;
+
+ white_count = 0;
+ white_sum = 0;
+
+ for (y = 0; y < (int)dev->calib_lines; y++)
+ {
+ col = calibration_data[(x + y * pixels_per_line * channels) * 2];
+ col |=
+ calibration_data[(x + y * pixels_per_line * channels) * 2 +
+ 1] << 8;
+
+ if (col >= white)
+ {
+ white_sum += col;
+ white_count++;
+ }
+ if (col <= dark)
+ {
+ dark_sum += col;
+ dark_count++;
+ }
+
+ }
+
+ dark_sum /= dark_count;
+ white_sum /= white_count;
+
+ *average_dark++ = dark_sum & 255;
+ *average_dark++ = dark_sum >> 8;
+
+ *average_white++ = white_sum & 255;
+ *average_white++ = white_sum >> 8;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sanei_genesys_write_pnm_file ("white_average.pnm",
+ dev->white_average_data, 16, channels,
+ pixels_per_line, 1);
+ sanei_genesys_write_pnm_file ("dark_average.pnm",
+ dev->dark_average_data, 16, channels,
+ pixels_per_line, 1);
+ }
+
+ free (calibration_data);
+
+ DBGCOMPLETED;
+
+ return SANE_STATUS_GOOD;
+}
+
+/* computes one coefficient given bright-dark value
+ * @param coeff factor giving 1.00 gain
+ * @param target desired target code
+ * @param value brght-dark value
+ * */
+static unsigned int
+compute_coefficient (unsigned int coeff, unsigned int target, unsigned int value)
+{
+ int result;
+
+ if (value > 0)
+ {
+ result = (coeff * target) / value;
+ if (result >= 65535)
+ {
+ result = 65535;
+ }
+ }
+ else
+ {
+ result = coeff;
+ }
+ return result;
+}
+
+/** @brief compute shading coefficients for LiDE scanners
+ * The dark/white shading is actually performed _after_ reducing
+ * resolution via averaging. only dark/white shading data for what would be
+ * first pixel at full resolution is used.
+ *
+ * scanner raw input to output value calculation:
+ * o=(i-off)*(gain/coeff)
+ *
+ * from datasheet:
+ * off=dark_average
+ * gain=coeff*bright_target/(bright_average-dark_average)
+ * works for dark_target==0
+ *
+ * what we want is these:
+ * bright_target=(bright_average-off)*(gain/coeff)
+ * dark_target=(dark_average-off)*(gain/coeff)
+ * leading to
+ * off = (dark_average*bright_target - bright_average*dark_target)/(bright_target - dark_target)
+ * gain = (bright_target - dark_target)/(bright_average - dark_average)*coeff
+ *
+ * @param dev scanner's device
+ * @param shading_data memory area where to store the computed shading coefficients
+ * @param pixels_per_line number of pixels per line
+ * @param words_per_color memory words per color channel
+ * @param channels number of color channels (actually 1 or 3)
+ * @param o shading coefficients left offset
+ * @param coeff 4000h or 2000h depending on fast scan mode or not (GAIN4 bit)
+ * @param target_bright value of the white target code
+ * @param target_dark value of the black target code
+*/
+#ifndef UNIT_TESTING
+static
+#endif
+void
+compute_averaged_planar (Genesys_Device * dev,
+ uint8_t * shading_data,
+ unsigned int pixels_per_line,
+ unsigned int words_per_color,
+ unsigned int channels,
+ unsigned int o,
+ unsigned int coeff,
+ unsigned int target_bright,
+ unsigned int target_dark)
+{
+ unsigned int x, i, j, br, dk, res, avgpixels, basepixels, val;
+
+ DBG (DBG_info, "%s: pixels=%d, offset=%d\n", __FUNCTION__, pixels_per_line,
+ o);
+ /* initialize result */
+ memset (shading_data, 0xff, words_per_color * 3 * 2);
+
+ /*
+ strangely i can write 0x20000 bytes beginning at 0x00000 without overwriting
+ slope tables - which begin at address 0x10000(for 1200dpi hw mode):
+ memory is organized in words(2 bytes) instead of single bytes. explains
+ quite some things
+ */
+/*
+ another one: the dark/white shading is actually performed _after_ reducing
+ resolution via averaging. only dark/white shading data for what would be
+ first pixel at full resolution is used.
+ */
+/*
+ scanner raw input to output value calculation:
+ o=(i-off)*(gain/coeff)
+
+ from datasheet:
+ off=dark_average
+ gain=coeff*bright_target/(bright_average-dark_average)
+ works for dark_target==0
+
+ what we want is these:
+ bright_target=(bright_average-off)*(gain/coeff)
+ dark_target=(dark_average-off)*(gain/coeff)
+ leading to
+ off = (dark_average*bright_target - bright_average*dark_target)/(bright_target - dark_target)
+ gain = (bright_target - dark_target)/(bright_average - dark_average)*coeff
+ */
+ /* duplicate half-ccd logic */
+ res = dev->settings.xres;
+ if ((dev->model->flags & GENESYS_FLAG_HALF_CCD_MODE) &&
+ dev->settings.xres <= dev->sensor.optical_res / 2)
+ res *= 2; /* scanner is using half-ccd mode */
+ /*this should be evenly dividable */
+ basepixels = dev->sensor.optical_res / res;
+
+/* gl841 supports 1/1 1/2 1/3 1/4 1/5 1/6 1/8 1/10 1/12 1/15 averaging */
+ if (basepixels < 1)
+ avgpixels = 1;
+ else if (basepixels < 6)
+ avgpixels = basepixels;
+ else if (basepixels < 8)
+ avgpixels = 6;
+ else if (basepixels < 10)
+ avgpixels = 8;
+ else if (basepixels < 12)
+ avgpixels = 10;
+ else if (basepixels < 15)
+ avgpixels = 12;
+ else
+ avgpixels = 15;
+
+ DBG (DBG_info, "%s: averaging over %d pixels\n", __FUNCTION__, avgpixels);
+
+ for (x = 0; x <= pixels_per_line - avgpixels; x += avgpixels)
+ {
+
+ if ((x + o) * 2 * 2 + 3 > words_per_color * 2)
+ break;
+
+ for (j = 0; j < channels; j++)
+ {
+
+ dk = 0;
+ br = 0;
+ for (i = 0; i < avgpixels; i++)
+ {
+ /* dark data */
+ dk +=
+ (dev->dark_average_data[(x + i +
+ pixels_per_line * j) *
+ 2] |
+ (dev->dark_average_data
+ [(x + i + pixels_per_line * j) * 2 + 1] << 8));
+
+ /* white data */
+ br +=
+ (dev->white_average_data[(x + i +
+ pixels_per_line * j) *
+ 2] |
+ (dev->white_average_data
+ [(x + i + pixels_per_line * j) * 2 + 1] << 8));
+ }
+
+ br /= avgpixels;
+ dk /= avgpixels;
+
+ if (br * target_dark > dk * target_bright)
+ val = 0;
+ else if (dk * target_bright - br * target_dark >
+ 65535 * (target_bright - target_dark))
+ val = 65535;
+ else
+ val =
+ (dk * target_bright - br * target_dark) / (target_bright -
+ target_dark);
+
+/*fill all pixels, even if only the last one is relevant*/
+ for (i = 0; i < avgpixels; i++)
+ {
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * j] = val & 0xff;
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * j + 1] = val >> 8;
+ }
+
+ val = br - dk;
+
+ if (65535 * val > (target_bright - target_dark) * coeff)
+ val = (coeff * (target_bright - target_dark)) / val;
+ else
+ val = 65535;
+
+/*fill all pixels, even if only the last one is relevant*/
+ for (i = 0; i < avgpixels; i++)
+ {
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * j + 2] = val & 0xff;
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * j + 3] = val >> 8;
+ }
+ }
+
+/*fill remaining channels*/
+ for (j = channels; j < 3; j++)
+ {
+ for (i = 0; i < avgpixels; i++)
+ {
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * j] =
+ shading_data[(x + o + i) * 2 * 2 + words_per_color * 0];
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * j + 1] =
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * 0 + 1];
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * j + 2] =
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * 0 + 2];
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * j + 3] =
+ shading_data[(x + o + i) * 2 * 2 +
+ words_per_color * 2 * 0 + 3];
+ }
+ }
+
+ }
+}
+
+/**
+ * Computes shading coefficient using formula in data sheet. 16bit data values
+ * manipulated here are little endian. For now we assume deletion scanning type
+ * and that there is always 3 channels.
+ * @param dev scanner's device
+ * @param shading_data memory area where to store the computed shading coefficients
+ * @param pixels_per_line number of pixels per line
+ * @param channels number of color channels (actually 1 or 3)
+ * @param cmat color transposition matrix
+ * @param offset shading coefficients left offset
+ * @param coeff 4000h or 2000h depending on fast scan mode or not
+ * @param target value of the target code
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+void
+compute_coefficients (Genesys_Device * dev,
+ uint8_t * shading_data,
+ unsigned int pixels_per_line,
+ unsigned int channels,
+ unsigned int cmat[3],
+ int offset,
+ unsigned int coeff,
+ unsigned int target)
+{
+ uint8_t *ptr; /* contain 16bit words in little endian */
+ unsigned int x, c;
+ unsigned int val, br, dk;
+ unsigned int start, end;
+
+ DBG (DBG_io,
+ "compute_coefficients: pixels_per_line=%d, coeff=0x%04x\n", pixels_per_line, coeff);
+
+ /* compute start & end values depending of the offset */
+ if (offset < 0)
+ {
+ start = -1 * offset;
+ end = pixels_per_line;
+ }
+ else
+ {
+ start = 0;
+ end = pixels_per_line - offset;
+ }
+
+ for (c = 0; c < channels; c++)
+ {
+ for (x = start; x < end; x++)
+ {
+ /* TODO if channels=1 , use filter to know the base addr */
+ ptr = shading_data + 4 * ((x + offset) * channels + cmat[c]);
+
+ /* dark data */
+ dk = dev->dark_average_data[x * 2 * channels + c * 2];
+ dk += 256 * dev->dark_average_data[x * 2 * channels + c * 2 + 1];
+
+ /* white data */
+ br = dev->white_average_data[x * 2 * channels + c * 2];
+ br += 256 * dev->white_average_data[x * 2 * channels + c * 2 + 1];
+
+ /* compute coeff */
+ val=compute_coefficient(coeff,target,br-dk);
+
+ /* assign it */
+ ptr[0] = dk & 255;
+ ptr[1] = dk / 256;
+ ptr[2] = val & 0xff;
+ ptr[3] = val / 256;
+
+ }
+ }
+}
+
+/**
+ * Computes shading coefficient using formula in data sheet. 16bit data values
+ * manipulated here are little endian. Data is in planar form, ie grouped by
+ * lines of the same color component.
+ * @param dev scanner's device
+ * @param shading_data memory area where to store the computed shading coefficients
+ * @param factor averaging factor when the calibration scan is done at a higher resolution
+ * than the final scan
+ * @param pixels_per_line number of pixels per line
+ * @param words_per_color total number of shading data words for one color element
+ * @param channels number of color channels (actually 1 or 3)
+ * @param cmat transcoding matrix for color channel order
+ * @param offset shading coefficients left offset
+ * @param coeff 4000h or 2000h depending on fast scan mode or not
+ * @param target white target value
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+void
+compute_planar_coefficients (Genesys_Device * dev,
+ uint8_t * shading_data,
+ unsigned int factor,
+ unsigned int pixels_per_line,
+ unsigned int words_per_color,
+ unsigned int channels,
+ unsigned int cmat[3],
+ unsigned int offset,
+ unsigned int coeff,
+ unsigned int target)
+{
+ uint8_t *ptr; /* contains 16bit words in little endian */
+ uint32_t x, c, i;
+ uint32_t val, dk, br;
+
+ DBG (DBG_io,
+ "compute_planar_coefficients: factor=%d, pixels_per_line=%d, words=0x%X, coeff=0x%04x\n", factor,
+ pixels_per_line, words_per_color, coeff);
+ for (c = 0; c < channels; c++)
+ {
+ /* shading data is larger than pixels_per_line so offset can be neglected */
+ for (x = 0; x < pixels_per_line; x+=factor)
+ {
+ /* x2 because of 16 bit values, and x2 since one coeff for dark
+ * and another for white */
+ ptr = shading_data + words_per_color * cmat[c] * 2 + (x + offset) * 4;
+
+ dk = 0;
+ br = 0;
+
+ /* average case */
+ for(i=0;i<factor;i++)
+ {
+ dk +=
+ 256 * dev->dark_average_data[((x+i) + pixels_per_line * c) * 2 + 1];
+ dk += dev->dark_average_data[((x+i) + pixels_per_line * c) * 2];
+ br +=
+ 256 * dev->white_average_data[((x+i) + pixels_per_line * c) * 2 + 1];
+ br += dev->white_average_data[((x+i) + pixels_per_line * c) * 2];
+ }
+ dk /= factor;
+ br /= factor;
+
+ val = compute_coefficient (coeff, target, br - dk);
+
+ /* we duplicate the information to have calibration data at optical resolution */
+ for (i = 0; i < factor; i++)
+ {
+ ptr[0 + 4 * i] = dk & 255;
+ ptr[1 + 4 * i] = dk / 256;
+ ptr[2 + 4 * i] = val & 0xff;
+ ptr[3 + 4 * i] = val / 256;
+ }
+ }
+ }
+ /* in case of gray level scan, we duplicate shading information on all
+ * three color channels */
+ if(channels==1)
+ {
+ memcpy(shading_data+cmat[1]*2*words_per_color,
+ shading_data+cmat[0]*2*words_per_color,
+ words_per_color*2);
+ memcpy(shading_data+cmat[2]*2*words_per_color,
+ shading_data+cmat[0]*2*words_per_color,
+ words_per_color*2);
+ }
+}
+
+#ifndef UNIT_TESTING
+static
+#endif
+void
+compute_shifted_coefficients (Genesys_Device * dev,
+ uint8_t * shading_data,
+ unsigned int pixels_per_line,
+ unsigned int channels,
+ unsigned int cmat[3],
+ int offset,
+ unsigned int coeff,
+ unsigned int target_dark,
+ unsigned int target_bright,
+ unsigned int patch_size) /* contigous extent */
+{
+ unsigned int x, avgpixels, basepixels, i, j, val1, val2;
+ unsigned int br_tmp [3], dk_tmp [3];
+ uint8_t *ptr = shading_data + offset * 3 * 4; /* contain 16bit words in little endian */
+ unsigned int patch_cnt = offset * 3; /* at start, offset of first patch */
+
+ x = dev->settings.xres;
+ if ((dev->model->flags & GENESYS_FLAG_HALF_CCD_MODE) &&
+ (dev->settings.xres <= dev->sensor.optical_res / 2))
+ x *= 2; /* scanner is using half-ccd mode */
+ basepixels = dev->sensor.optical_res / x; /*this should be evenly dividable */
+
+ /* gl841 supports 1/1 1/2 1/3 1/4 1/5 1/6 1/8 1/10 1/12 1/15 averaging */
+ if (basepixels < 1)
+ avgpixels = 1;
+ else if (basepixels < 6)
+ avgpixels = basepixels;
+ else if (basepixels < 8)
+ avgpixels = 6;
+ else if (basepixels < 10)
+ avgpixels = 8;
+ else if (basepixels < 12)
+ avgpixels = 10;
+ else if (basepixels < 15)
+ avgpixels = 12;
+ else
+ avgpixels = 15;
+ DBG (DBG_info, "compute_shifted_coefficients: pixels_per_line=%d, coeff=0x%04x, averaging over %d pixels\n", pixels_per_line, coeff, avgpixels);
+
+ for (x = 0; x <= pixels_per_line - avgpixels; x += avgpixels) {
+ memset (&br_tmp, 0, sizeof(br_tmp));
+ memset (&dk_tmp, 0, sizeof(dk_tmp));
+
+ for (i = 0; i < avgpixels; i++) {
+ for (j = 0; j < channels; j++) {
+ br_tmp[j] += (dev->white_average_data[((x + i) * channels + j) * 2] |
+ (dev->white_average_data[((x + i) * channels + j) * 2 + 1] << 8));
+ dk_tmp[i] += (dev->dark_average_data[((x + i) * channels + j) * 2] |
+ (dev->dark_average_data[((x + i) * channels + j) * 2 + 1] << 8));
+ }
+ }
+ for (j = 0; j < channels; j++) {
+ br_tmp[j] /= avgpixels;
+ dk_tmp[j] /= avgpixels;
+
+ if (br_tmp[j] * target_dark > dk_tmp[j] * target_bright)
+ val1 = 0;
+ else if (dk_tmp[j] * target_bright - br_tmp[j] * target_dark > 65535 * (target_bright - target_dark))
+ val1 = 65535;
+ else
+ val1 = (dk_tmp[j] * target_bright - br_tmp[j] * target_dark) / (target_bright - target_dark);
+
+ val2 = br_tmp[j] - dk_tmp[j];
+ if (65535 * val2 > (target_bright - target_dark) * coeff)
+ val2 = (coeff * (target_bright - target_dark)) / val2;
+ else
+ val2 = 65535;
+
+ br_tmp[j] = val1;
+ dk_tmp[j] = val2;
+ }
+ for (i = 0; i < avgpixels; i++) {
+ for (j = 0; j < channels; j++) {
+ * ptr++ = br_tmp[ cmat[j] ] & 0xff;
+ * ptr++ = br_tmp[ cmat[j] ] >> 8;
+ * ptr++ = dk_tmp[ cmat[j] ] & 0xff;
+ * ptr++ = dk_tmp[ cmat[j] ] >> 8;
+ patch_cnt++;
+ if (patch_cnt == patch_size) {
+ patch_cnt = 0;
+ val1 = cmat[2];
+ cmat[2] = cmat[1];
+ cmat[1] = cmat[0];
+ cmat[0] = val1;
+ }
+ }
+ }
+ }
+}
+
+static SANE_Status
+genesys_send_shading_coefficient (Genesys_Device * dev)
+{
+ SANE_Status status;
+ uint32_t pixels_per_line;
+ uint8_t *shading_data; /**> contains 16bit words in little endian */
+ uint8_t channels;
+ int o;
+ unsigned int length; /**> number of shading calibration data words */
+ unsigned int factor;
+ unsigned int cmat[3]; /**> matrix of color channels */
+ unsigned int coeff, target_code, words_per_color = 0;
+
+ DBGSTART;
+
+ pixels_per_line = dev->calib_pixels;
+ channels = dev->calib_channels;
+
+ /* we always build data for three channels, even for gray
+ * we make the shading data such that each color channel data line is contiguous
+ * to the next one, which allow to write the 3 channels in 1 write
+ * during genesys_send_shading_coefficient, some values are words, other bytes
+ * hence the x2 factor */
+ switch (sanei_genesys_read_reg_from_set (dev->reg, 0x05) >> 6)
+ {
+ /* 600 dpi */
+ case 0:
+ words_per_color = 0x2a00;
+ break;
+ /* 1200 dpi */
+ case 1:
+ words_per_color = 0x5500;
+ break;
+ /* 2400 dpi */
+ case 2:
+ words_per_color = 0xa800;
+ break;
+ /* 4800 dpi */
+ case 3:
+ words_per_color = 0x15000;
+ break;
+ }
+
+ length = words_per_color * 3 * 2;
+ /* allocate computed size */
+ shading_data = malloc (length);
+ if (!shading_data)
+ {
+ DBG (DBG_error,
+ "genesys_send_shading_coefficient: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+ memset (shading_data, 0, length);
+
+ /* TARGET/(Wn-Dn) = white gain -> ~1.xxx then it is multiplied by 0x2000
+ or 0x4000 to give an integer
+ Wn = white average for column n
+ Dn = dark average for column n
+ */
+ if (dev->model->cmd_set->get_gain4_bit (dev->calib_reg))
+ coeff = 0x4000;
+ else
+ coeff = 0x2000;
+
+ /* compute avg factor */
+ if(dev->settings.xres>dev->sensor.optical_res)
+ {
+ factor=1;
+ }
+ else
+ {
+ factor=dev->sensor.optical_res/dev->settings.xres;
+ }
+
+ /* for GL646, shading data is planar if REG01_FASTMOD is set and
+ * chunky if not. For now we rely on the fact that we know that
+ * each sensor is used only in one mode. Currently only the CIS_XP200
+ * sets REG01_FASTMOD.
+ */
+
+ /* TODO setup a struct in genesys_devices that
+ * will handle these settings instead of having this switch growing up */
+ cmat[0] = 0;
+ cmat[1] = 1;
+ cmat[2] = 2;
+ switch (dev->model->ccd_type)
+ {
+ case CCD_XP300:
+ case CCD_ROADWARRIOR:
+ case CCD_DP665:
+ case CCD_DP685:
+ case CCD_DSMOBILE600:
+ target_code = 0xdc00;
+ o = 4;
+ compute_planar_coefficients (dev,
+ shading_data,
+ factor,
+ pixels_per_line,
+ words_per_color,
+ channels,
+ cmat,
+ o,
+ coeff,
+ target_code);
+ break;
+ case CIS_XP200:
+ target_code = 0xdc00;
+ o = 2;
+ cmat[0] = 2; /* red is last */
+ cmat[1] = 0; /* green is first */
+ cmat[2] = 1; /* blue is second */
+ compute_planar_coefficients (dev,
+ shading_data,
+ 1,
+ pixels_per_line,
+ words_per_color,
+ channels,
+ cmat,
+ o,
+ coeff,
+ target_code);
+ break;
+ case CCD_HP2300:
+ target_code = 0xdc00;
+ o = 2;
+ if(dev->settings.xres<=dev->sensor.optical_res/2)
+ {
+ o = o - dev->sensor.dummy_pixel / 2;
+ }
+ compute_coefficients (dev,
+ shading_data,
+ pixels_per_line,
+ 3,
+ cmat,
+ o,
+ coeff,
+ target_code);
+ break;
+ case CCD_5345:
+ target_code = 0xe000;
+ o = 4;
+ if(dev->settings.xres<=dev->sensor.optical_res/2)
+ {
+ o = o - dev->sensor.dummy_pixel;
+ }
+ compute_coefficients (dev,
+ shading_data,
+ pixels_per_line,
+ 3,
+ cmat,
+ o,
+ coeff,
+ target_code);
+ break;
+ case CCD_HP3670:
+ case CCD_HP2400:
+ target_code = 0xe000;
+ /* offset is cksel dependent, but we can't use this in common code */
+ if(dev->settings.xres<=300)
+ {
+ o = -10; /* OK for <=300 */
+ }
+ else if(dev->settings.xres<=600)
+ {
+ o = -6; /* ok at 600 */
+ }
+ else
+ {
+ o = +2;
+ }
+ compute_coefficients (dev,
+ shading_data,
+ pixels_per_line,
+ 3,
+ cmat,
+ o,
+ coeff,
+ target_code);
+ break;
+ case CCD_KVSS080:
+ case CCD_PLUSTEK3800:
+ case CCD_G4050:
+ case CCD_CS4400F:
+ case CCD_CS8400F:
+ target_code = 0xe000;
+ o = 0;
+ compute_coefficients (dev,
+ shading_data,
+ pixels_per_line,
+ 3,
+ cmat,
+ o,
+ coeff,
+ target_code);
+ break;
+ case CIS_CANONLIDE700:
+ case CIS_CANONLIDE100:
+ case CIS_CANONLIDE200:
+ case CIS_CANONLIDE110:
+ case CIS_CANONLIDE210:
+ /* TODO store this in a data struct so we avoid
+ * growing this switch */
+ if(dev->model->ccd_type!=CIS_CANONLIDE110
+ && dev->model->ccd_type!=CIS_CANONLIDE210)
+ target_code=0xdc00;
+ else
+ target_code=0xf000;
+ words_per_color=pixels_per_line*2;
+ length = words_per_color * 3 * 2;
+ free(shading_data);
+ shading_data = malloc (length);
+ if (!shading_data)
+ {
+ DBG (DBG_error,
+ "genesys_send_shading_coefficient: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+ memset (shading_data, 0, length);
+ compute_planar_coefficients (dev,
+ shading_data,
+ 1,
+ pixels_per_line,
+ words_per_color,
+ channels,
+ cmat,
+ 0,
+ coeff,
+ target_code);
+ break;
+ case CCD_CANONLIDE35:
+ compute_averaged_planar (dev,
+ shading_data,
+ pixels_per_line,
+ words_per_color,
+ channels,
+ 4,
+ coeff,
+ 0xfa00,
+ 0x0a00);
+ break;
+ case CCD_PLUSTEK_3600:
+ compute_shifted_coefficients (dev,
+ shading_data,
+ pixels_per_line,
+ channels,
+ cmat,
+ 12, /* offset */
+ coeff,
+ 0x0001, /* target_dark */
+ 0xf900, /* target_bright */
+ 256); /* patch_size: contigous extent */
+ break;
+ default:
+ DBG (DBG_error,
+ "genesys_send_shading_coefficient: sensor %d not supported\n",
+ dev->model->ccd_type);
+ return SANE_STATUS_UNSUPPORTED;
+ break;
+ }
+
+ /* do the actual write of shading calibration data to the scanner */
+ status = genesys_send_offset_and_shading (dev, shading_data, length);
+ if (status != SANE_STATUS_GOOD)
+ DBG (DBG_error,
+ "genesys_send_shading_coefficient: failed to send shading data: %s\n",
+ sane_strstatus (status));
+
+ free (shading_data);
+ DBGCOMPLETED;
+
+ return SANE_STATUS_GOOD;
+}
+
+
+/**
+ * search calibration cache list for an entry matching required scan.
+ * If one is found, set device calibration with it
+ * @param dev scanner's device
+ * @return SANE_STATUS_UNSUPPORTED if no matching cache entry has been
+ * found, SANE_STATUS_GOOD if one has been found and used.
+ */
+static SANE_Status
+genesys_restore_calibration (Genesys_Device * dev)
+{
+ SANE_Status status;
+ Genesys_Calibration_Cache *cache;
+
+ DBGSTART;
+
+ /* if no cache or no function to evaluate cache entry ther can be no match */
+ if (!dev->model->cmd_set->is_compatible_calibration
+ || dev->calibration_cache == NULL)
+ return SANE_STATUS_UNSUPPORTED;
+
+ /* we walk the link list of calibration cache in search for a
+ * matching one */
+ for (cache = dev->calibration_cache; cache; cache = cache->next)
+ {
+ status = dev->model->cmd_set->is_compatible_calibration (dev, cache, SANE_FALSE);
+ /* SANE_STATUS_GOOD, a matching cache has been found
+ * so we use it to populate calibration data
+ */
+ if (status == SANE_STATUS_GOOD)
+ {
+ memcpy (&dev->frontend, &cache->frontend, sizeof (dev->frontend));
+ /* we don't restore the gamma fields */
+ memcpy (dev->sensor.regs_0x10_0x1d, cache->sensor.regs_0x10_0x1d, 6);
+ free (dev->dark_average_data);
+ free (dev->white_average_data);
+
+ dev->average_size = cache->average_size;
+ dev->calib_pixels = cache->calib_pixels;
+ dev->calib_channels = cache->calib_channels;
+
+ dev->dark_average_data = (uint8_t *) malloc (cache->average_size);
+ dev->white_average_data = (uint8_t *) malloc (cache->average_size);
+
+ if (!dev->dark_average_data || !dev->white_average_data)
+ return SANE_STATUS_NO_MEM;
+
+ memcpy (dev->dark_average_data,
+ cache->dark_average_data, dev->average_size);
+ memcpy (dev->white_average_data,
+ cache->white_average_data, dev->average_size);
+
+
+ if(dev->model->cmd_set->send_shading_data==NULL)
+ {
+ status = genesys_send_shading_coefficient (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_restore_calibration: failed to send shading calibration coefficients: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ DBG (DBG_proc, "genesys_restore_calibration: restored\n");
+ return SANE_STATUS_GOOD;
+ }
+
+ /* here status is either SANE_STATUS_UNSUPPORTED which mean tested cache
+ * entry doesn't match, or an fatal error */
+ if (status != SANE_STATUS_UNSUPPORTED)
+ {
+ DBG (DBG_error,
+ "genesys_restore_calibration: fail while checking compatibility: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ DBG (DBG_proc, "genesys_restore_calibration: completed(nothing found)\n");
+ return SANE_STATUS_UNSUPPORTED;
+}
+
+
+static SANE_Status
+genesys_save_calibration (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_UNSUPPORTED;
+ Genesys_Calibration_Cache *cache = NULL;
+#ifdef HAVE_SYS_TIME_H
+ struct timeval time;
+#endif
+
+ DBGSTART;
+
+ if (!dev->model->cmd_set->is_compatible_calibration)
+ return SANE_STATUS_UNSUPPORTED;
+
+ if (dev->calibration_cache != NULL)
+ {
+ for (cache = dev->calibration_cache; cache; cache = cache->next)
+ {
+ status = dev->model->cmd_set->is_compatible_calibration (dev, cache, SANE_TRUE);
+ if (status == SANE_STATUS_UNSUPPORTED)
+ {
+ continue;
+ }
+ else if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_save_calibration: fail while checking compatibility: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ break;
+ }
+ }
+
+ /* if we found on overridable cache, we reuse it */
+ if (cache)
+ {
+ free(cache->dark_average_data);
+ free(cache->white_average_data);
+ }
+ else
+ {
+ /* create a new cache entry and insert it in the linked list */
+ cache = malloc (sizeof (Genesys_Calibration_Cache));
+ if (!cache)
+ return SANE_STATUS_NO_MEM;
+
+ memset (cache, 0, sizeof (Genesys_Calibration_Cache));
+
+ cache->next = dev->calibration_cache;
+ dev->calibration_cache = cache;
+ }
+
+ cache->average_size = dev->average_size;
+
+ cache->dark_average_data = (uint8_t *) malloc (cache->average_size);
+ if (!cache->dark_average_data)
+ return SANE_STATUS_NO_MEM;
+ cache->white_average_data = (uint8_t *) malloc (cache->average_size);
+ if (!cache->white_average_data)
+ return SANE_STATUS_NO_MEM;
+
+ memcpy (&cache->used_setup, &dev->current_setup, sizeof (cache->used_setup));
+ memcpy (&cache->frontend, &dev->frontend, sizeof (cache->frontend));
+ memcpy (&cache->sensor, &dev->sensor, sizeof (cache->sensor));
+
+ cache->calib_pixels = dev->calib_pixels;
+ cache->calib_channels = dev->calib_channels;
+ memcpy (cache->dark_average_data, dev->dark_average_data, cache->average_size);
+ memcpy (cache->white_average_data, dev->white_average_data, cache->average_size);
+#ifdef HAVE_SYS_TIME_H
+ gettimeofday(&time,NULL);
+ cache->last_calibration = time.tv_sec;
+#endif
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * does the calibration process for a flatbed scanner
+ * - offset calibration
+ * - gain calibration
+ * - shading calibration
+ * @param dev device to calibrate
+ * @return SANE_STATUS_GOOD if everything when all right, else the error code.
+ */
+static SANE_Status
+genesys_flatbed_calibration (Genesys_Device * dev)
+{
+ SANE_Status status;
+ uint32_t pixels_per_line;
+ int yres;
+
+ DBG (DBG_info, "genesys_flatbed_calibration\n");
+
+ yres = dev->sensor.optical_res;
+ if (dev->settings.yres <= dev->sensor.optical_res / 2)
+ yres /= 2;
+
+ /* do offset calibration if needed */
+ if (dev->model->flags & GENESYS_FLAG_OFFSET_CALIBRATION)
+ {
+ status = dev->model->cmd_set->offset_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: offset calibration failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* since all the registers are set up correctly, just use them */
+ status = dev->model->cmd_set->coarse_gain_calibration (dev, yres);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: coarse gain calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ }
+ else
+ /* since we have 2 gain calibration proc, skip second if first one was
+ used. */
+ {
+ status = dev->model->cmd_set->init_regs_for_coarse_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: failed to send calibration registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = genesys_coarse_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: failed to do coarse gain calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ }
+
+ if (dev->model->is_cis)
+ {
+ /* the afe now sends valid data for doing led calibration */
+ status = dev->model->cmd_set->led_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: led calibration failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* calibrate afe again to match new exposure */
+ if (dev->model->flags & GENESYS_FLAG_OFFSET_CALIBRATION)
+ {
+ status = dev->model->cmd_set->offset_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: offset calibration failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* since all the registers are set up correctly, just use them */
+
+ status = dev->model->cmd_set->coarse_gain_calibration (dev, yres);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: coarse gain calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ else
+ /* since we have 2 gain calibration proc, skip second if first one was
+ used. */
+ {
+ status =
+ dev->model->cmd_set->init_regs_for_coarse_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: failed to send calibration registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = genesys_coarse_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: failed to do static calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ }
+
+ /* we always use sensor pixel number when the ASIC can't handle multi-segments sensor */
+ if (!(dev->model->flags & GENESYS_FLAG_SIS_SENSOR))
+ {
+ pixels_per_line = (SANE_UNFIX (dev->model->x_size) * dev->settings.xres) / MM_PER_INCH;
+ }
+ else
+ {
+ pixels_per_line = dev->sensor.sensor_pixels;
+ }
+
+ /* send default shading data */
+ status = sanei_genesys_init_shading_data (dev, pixels_per_line);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: failed to init shading process: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* shading calibration */
+ status = dev->model->cmd_set->init_regs_for_shading (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "genesys_flatbed_calibration: failed to send shading "
+ "registers: %s\n", sane_strstatus (status));
+ return status;
+ }
+
+ if (dev->model->flags & GENESYS_FLAG_DARK_WHITE_CALIBRATION)
+ {
+ status = genesys_dark_white_shading_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: failed to do dark+white shading calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ else
+ {
+ if (dev->model->flags & GENESYS_FLAG_DARK_CALIBRATION)
+ {
+ status = genesys_dark_shading_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: failed to do dark shading calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ status = genesys_white_shading_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: failed to do white shading calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ if(dev->model->cmd_set->send_shading_data==NULL)
+ {
+ status = genesys_send_shading_coefficient (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_flatbed_calibration: failed to send shading calibration coefficients: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ DBG (DBG_info, "genesys_flatbed_calibration: completed\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * Does the calibration process for a sheetfed scanner
+ * - offset calibration
+ * - gain calibration
+ * - shading calibration
+ * During calibration a predefined calibration sheet with specific black and white
+ * areas is used.
+ * @param dev device to calibrate
+ * @return SANE_STATUS_GOOD if everything when all right, else the error code.
+ */
+static SANE_Status
+genesys_sheetfed_calibration (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ SANE_Bool forward = SANE_TRUE;
+ int xres;
+
+ DBGSTART;
+ if (dev->model->cmd_set->search_strip == NULL)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: no strip searching function available\n");
+ return SANE_STATUS_UNSUPPORTED;
+ }
+
+ /* first step, load document */
+ status = dev->model->cmd_set->load_document (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to load document: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+
+ DBG (DBG_info, "genesys_sheetfed_calibration\n");
+
+ /* led, offset and gain calibration are influenced by scan
+ * settings. So we set it to sensor resolution */
+ xres = dev->sensor.optical_res;
+ dev->settings.xres = dev->sensor.optical_res;
+ /* XP200 needs to calibrate a full and half sensor's resolution */
+ if (dev->model->ccd_type == CIS_XP200
+ && dev->settings.xres <= dev->sensor.optical_res / 2)
+ dev->settings.xres /= 2;
+
+ /* the afe needs to sends valid data even before calibration */
+
+ /* go to a white area */
+ status = dev->model->cmd_set->search_strip (dev, forward, SANE_FALSE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to find white strip: %s\n",
+ sane_strstatus (status));
+ dev->model->cmd_set->eject_document (dev);
+ return status;
+ }
+
+ if (dev->model->is_cis)
+ {
+ status = dev->model->cmd_set->led_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: led calibration failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* calibrate afe */
+ if (dev->model->flags & GENESYS_FLAG_OFFSET_CALIBRATION)
+ {
+ status = dev->model->cmd_set->offset_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: offset calibration failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* since all the registers are set up correctly, just use them */
+
+ status = dev->model->cmd_set->coarse_gain_calibration (dev, xres);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: coarse gain calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ else
+ /* since we have 2 gain calibration proc, skip second if first one was
+ used. */
+ {
+ status =
+ dev->model->cmd_set->init_regs_for_coarse_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to send calibration registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = genesys_coarse_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to do static calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* search for a full width black strip and then do a 16 bit scan to
+ * gather black shading data */
+ if (dev->model->flags & GENESYS_FLAG_DARK_CALIBRATION)
+ {
+ /* seek black/white reverse/forward */
+ status = dev->model->cmd_set->search_strip (dev, forward, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to find black strip: %s\n",
+ sane_strstatus (status));
+ dev->model->cmd_set->eject_document (dev);
+ return status;
+ }
+
+ status = dev->model->cmd_set->init_regs_for_shading (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to do set up registers for shading calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ status = genesys_dark_shading_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ dev->model->cmd_set->eject_document (dev);
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to do dark shading calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ forward = SANE_FALSE;
+ }
+
+
+ /* go to a white area */
+ status = dev->model->cmd_set->search_strip (dev, forward, SANE_FALSE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to find white strip: %s\n",
+ sane_strstatus (status));
+ dev->model->cmd_set->eject_document (dev);
+ return status;
+ }
+
+ status = dev->model->cmd_set->init_regs_for_shading (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to do set up registers for shading calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ status = genesys_white_shading_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ dev->model->cmd_set->eject_document (dev);
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed eject target: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* in case we haven't black shading data, build it from black pixels
+ * of white calibration */
+ if (!(dev->model->flags & GENESYS_FLAG_DARK_CALIBRATION))
+ {
+ FREE_IFNOT_NULL (dev->dark_average_data);
+ dev->dark_average_data = malloc (dev->average_size);
+ memset (dev->dark_average_data, 0x0f, dev->average_size);
+ /* XXX STEF XXX
+ * with black point in white shading, build an average black
+ * pixel and use it to fill the dark_average
+ * dev->calib_pixels
+ (dev->sensor.sensor_pixels * dev->settings.xres) / dev->sensor.optical_res,
+ dev->calib_lines,
+ */
+ }
+
+ /* send the shading coefficient when doing whole line shading
+ * but not when using SHDAREA like GL124 */
+ if(dev->model->cmd_set->send_shading_data==NULL)
+ {
+ status = genesys_send_shading_coefficient (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to send shading calibration coefficients: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* save the calibration data */
+ genesys_save_calibration (dev);
+
+ /* and finally eject calibration sheet */
+ status = dev->model->cmd_set->eject_document (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_sheetfed_calibration: failed to eject document: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* resotre settings */
+ dev->settings.xres = xres;
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * does the calibration process for a device
+ * @param dev device to calibrate
+ */
+static SANE_Status
+genesys_scanner_calibration (Genesys_Device * dev)
+{
+ if (dev->model->is_sheetfed == SANE_FALSE)
+ {
+ return genesys_flatbed_calibration (dev);
+ }
+ return genesys_sheetfed_calibration (dev);
+}
+
+/* unused function kept in case it may be usefull in the futur */
+#if 0
+static SANE_Status
+genesys_wait_not_moving (Genesys_Device * dev, int mseconds)
+{
+ uint8_t value;
+ SANE_Status status;
+
+ DBG (DBG_proc,
+ "genesys_wait_not_moving: waiting %d mseconds for motor to stop\n",
+ mseconds);
+ while (mseconds > 0)
+ {
+ RIE (sanei_genesys_get_status (dev, &value));
+
+ if (dev->model->cmd_set->test_motor_flag_bit (value))
+ {
+ usleep (100 * 1000);
+ mseconds -= 100;
+ DBG (DBG_io,
+ "genesys_wait_not_moving: motor is moving, %d mseconds to go\n",
+ mseconds);
+ }
+ else
+ {
+ DBG (DBG_info,
+ "genesys_wait_not_moving: motor is not moving, exiting\n");
+ return SANE_STATUS_GOOD;
+ }
+
+ }
+ DBG (DBG_error,
+ "genesys_wait_not_moving: motor is still moving, timeout exceeded\n");
+ return SANE_STATUS_DEVICE_BUSY;
+}
+#endif
+
+
+/* ------------------------------------------------------------------------ */
+/* High level (exported) functions */
+/* ------------------------------------------------------------------------ */
+
+/*
+ * wait lamp to be warm enough by scanning the same line until
+ * differences between two scans are below a threshold
+ */
+static SANE_Status
+genesys_warmup_lamp (Genesys_Device * dev)
+{
+ uint8_t *first_line, *second_line;
+ int seconds = 0;
+ int pixel;
+ int channels, total_size;
+ double first_average = 0;
+ double second_average = 0;
+ int difference = 255;
+ int empty, lines = 3;
+ SANE_Status status = SANE_STATUS_IO_ERROR;
+
+ DBGSTART;
+
+ /* check if the current chipset implements warmup */
+ if(dev->model->cmd_set->init_regs_for_warmup==NULL)
+ {
+ DBG (DBG_error, "%s: init_regs_for_warmup not implemented\n", __FUNCTION__);
+ return status;
+ }
+
+ dev->model->cmd_set->init_regs_for_warmup (dev, dev->reg, &channels, &total_size);
+ first_line = malloc (total_size);
+ if (!first_line)
+ return SANE_STATUS_NO_MEM;
+
+ second_line = malloc (total_size);
+ if (!second_line)
+ {
+ free(first_line);
+ DBGCOMPLETED;
+ return SANE_STATUS_NO_MEM;
+ }
+
+ do
+ {
+ DBG (DBG_info, "genesys_warmup_lamp: one more loop\n");
+ RIEF2 (dev->model->cmd_set->begin_scan (dev, dev->reg, SANE_FALSE), first_line, second_line);
+ do
+ {
+ sanei_genesys_test_buffer_empty (dev, &empty);
+ }
+ while (empty);
+
+ status = sanei_genesys_read_data_from_scanner (dev, first_line, total_size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ RIEF2 (sanei_genesys_read_data_from_scanner
+ (dev, first_line, total_size), first_line, second_line);
+ }
+
+ RIEF2 (dev->model->cmd_set->end_scan (dev, dev->reg, SANE_TRUE), first_line, second_line);
+
+ sleep (1); /* sleep 1 s */
+ seconds++;
+
+ RIEF2 (dev->model->cmd_set->begin_scan (dev, dev->reg, SANE_FALSE), first_line, second_line);
+ do
+ {
+ sanei_genesys_test_buffer_empty (dev, &empty);
+ usleep (100 * 1000);
+ }
+ while (empty);
+ RIEF2 (sanei_genesys_read_data_from_scanner (dev, second_line, total_size), first_line, second_line);
+ RIEF2 (dev->model->cmd_set->end_scan (dev, dev->reg, SANE_TRUE), first_line, second_line);
+
+ /* compute difference between the two scans */
+ for (pixel = 0; pixel < total_size; pixel++)
+ {
+ /* 16 bit data */
+ if (dev->model->cmd_set->get_bitset_bit (dev->reg))
+ {
+ first_average += (first_line[pixel] + first_line[pixel + 1] * 256);
+ second_average += (second_line[pixel] + second_line[pixel + 1] * 256);
+ pixel++;
+ }
+ else
+ {
+ first_average += first_line[pixel];
+ second_average += second_line[pixel];
+ }
+ }
+ if (dev->model->cmd_set->get_bitset_bit (dev->reg))
+ {
+ first_average /= pixel;
+ second_average /= pixel;
+ difference = abs (first_average - second_average);
+ DBG (DBG_info,
+ "genesys_warmup_lamp: average = %.2f, diff = %.3f\n",
+ 100 * ((second_average) / (256 * 256)),
+ 100 * (difference / second_average));
+
+ if (second_average > (100 * 256)
+ && (difference / second_average) < 0.002)
+ break;
+ }
+ else
+ {
+ first_average /= pixel;
+ second_average /= pixel;
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sanei_genesys_write_pnm_file ("warmup1.pnm", first_line, 8,
+ channels,
+ total_size / (lines * channels),
+ lines);
+ sanei_genesys_write_pnm_file ("warmup2.pnm", second_line, 8,
+ channels,
+ total_size / (lines * channels),
+ lines);
+ }
+ DBG (DBG_info, "genesys_warmup_lamp: average 1 = %.2f, average 2 = %.2f\n", first_average, second_average);
+ /* if delta below 15/255 ~= 5.8%, lamp is considred warm enough */
+ if (abs (first_average - second_average) < 15
+ && second_average > 55)
+ break;
+ }
+
+ /* sleep another second before next loop */
+ sleep (1);
+ seconds++;
+ }
+ while (seconds < WARMUP_TIME);
+
+ if (seconds >= WARMUP_TIME)
+ {
+ DBG (DBG_error,
+ "genesys_warmup_lamp: warmup timed out after %d seconds. Lamp defective?\n",
+ seconds);
+ status = SANE_STATUS_IO_ERROR;
+ }
+ else
+ {
+ DBG (DBG_info,
+ "genesys_warmup_lamp: warmup succeeded after %d seconds\n",
+ seconds);
+ }
+
+ free (first_line);
+ free (second_line);
+
+ DBGCOMPLETED;
+
+ return status;
+}
+
+
+/* High-level start of scanning */
+static SANE_Status
+genesys_start_scan (Genesys_Device * dev, SANE_Bool lamp_off)
+{
+ SANE_Status status;
+ unsigned int steps, expected;
+ SANE_Bool empty;
+
+ DBGSTART;
+
+ /* since not all scanners are set ot wait for head to park
+ * we check we are not still parking before starting a new scan */
+ if (dev->parking == SANE_TRUE)
+ {
+ status = sanei_genesys_wait_for_home (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to wait for head to park: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* disable power saving*/
+ status = dev->model->cmd_set->save_power (dev, SANE_FALSE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to disable power saving mode: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* wait for lamp warmup : until a warmup for TRANSPARENCY is designed, skip
+ * it when scanning from XPA. */
+ if (!(dev->model->flags & GENESYS_FLAG_SKIP_WARMUP)
+ && (dev->settings.scan_method == SCAN_METHOD_FLATBED))
+ {
+ RIE (genesys_warmup_lamp (dev));
+ }
+
+ /* set top left x and y values by scanning the internals if flatbed scanners */
+ if (dev->model->is_sheetfed == SANE_FALSE)
+ {
+ /* do the geometry detection only once */
+ if ((dev->model->flags & GENESYS_FLAG_SEARCH_START)
+ && (dev->model->y_offset_calib == 0))
+ {
+ status = dev->model->cmd_set->search_start_position (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to search start position: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ dev->parking = SANE_FALSE;
+ status = dev->model->cmd_set->slow_back_home (dev, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to move scanhead to "
+ "home position: %s\n", sane_strstatus (status));
+ return status;
+ }
+ dev->scanhead_position_in_steps = 0;
+ }
+ else
+ {
+ /* Go home */
+ /* TODO: check we can drop this since we cannot have the
+ scanner's head wandering here */
+ dev->parking = SANE_FALSE;
+ status = dev->model->cmd_set->slow_back_home (dev, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to move scanhead to "
+ "home position: %s\n", sane_strstatus (status));
+ return status;
+ }
+ dev->scanhead_position_in_steps = 0;
+ }
+ }
+
+ /* move to calibration area for transparency adapter */
+ if ((dev->settings.scan_method == SCAN_METHOD_TRANSPARENCY)
+ && dev->model->cmd_set->move_to_ta != NULL)
+ {
+ status=dev->model->cmd_set->move_to_ta(dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to move to start of transparency adapter: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* load document if needed (for sheetfed scanner for instance) */
+ if (dev->model->is_sheetfed == SANE_TRUE
+ && dev->model->cmd_set->load_document != NULL)
+ {
+ status = dev->model->cmd_set->load_document (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to load document: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* send gamma tables. They have been set to device or user value
+ * when setting option value */
+ status = dev->model->cmd_set->send_gamma_table (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to init gamma table: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* try to use cached calibration first */
+ status = genesys_restore_calibration (dev);
+ if (status == SANE_STATUS_UNSUPPORTED)
+ {
+ /* calibration : sheetfed scanners can't calibrate before each scan */
+ /* and also those who have the NO_CALIBRATION flag */
+ if (!(dev->model->flags & GENESYS_FLAG_NO_CALIBRATION)
+ &&dev->model->is_sheetfed == SANE_FALSE)
+ {
+ status = genesys_scanner_calibration (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to do scanner calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ genesys_save_calibration (dev);
+ }
+ else
+ {
+ DBG (DBG_warn, "genesys_start_scan: no calibration done\n");
+ }
+ }
+ else if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to restore calibration: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* build look up table for dynamic lineart */
+ if(dev->settings.dynamic_lineart==SANE_TRUE)
+ {
+ status = sanei_genesys_load_lut(dev->lineart_lut, 8, 8, 50, 205,
+ dev->settings.threshold_curve,
+ dev->settings.threshold-127);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "genesys_start_scan: failed to build lut\n");
+ return status;
+ }
+ }
+
+ status = dev->model->cmd_set->init_regs_for_scan (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to do init registers for scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* no lamp during scan */
+ if(lamp_off == SANE_TRUE)
+ {
+ dev->model->cmd_set->set_lamp_power (dev, dev->reg, SANE_FALSE);
+ }
+
+ /* GL124 is using SHDAREA, so we have to wait for scan to be set up before
+ * sending shading data */
+ if( (dev->model->cmd_set->send_shading_data!=NULL)
+ && !(dev->model->flags & GENESYS_FLAG_NO_CALIBRATION))
+ {
+ status = genesys_send_shading_coefficient (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to send shading calibration coefficients: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* now send registers for scan */
+ status =
+ dev->model->cmd_set->bulk_write_register (dev, dev->reg,
+ dev->model->
+ cmd_set->bulk_full_size ());
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to bulk write registers, status = %d\n",
+ status);
+ return status;
+ }
+
+ /* start effective scan */
+ status = dev->model->cmd_set->begin_scan (dev, dev->reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ /*do we really need this? the valid data check should be sufficent -- pierre*/
+ /* waits for head to reach scanning position */
+ expected = sanei_genesys_read_reg_from_set (dev->reg, 0x3d) * 65536
+ + sanei_genesys_read_reg_from_set (dev->reg, 0x3e) * 256
+ + sanei_genesys_read_reg_from_set (dev->reg, 0x3f);
+ do
+ {
+ /* wait 1/10th of second between each test to avoid
+ overloading USB and CPU */
+ usleep (100 * 1000);
+ status = sanei_genesys_read_feed_steps (dev, &steps);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: Failed to read feed steps: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ while (steps < expected);
+
+ /* wait for buffers to be filled */
+ do
+ {
+ RIE (sanei_genesys_test_buffer_empty (dev, &empty));
+ }
+ while (empty);
+
+ /* when doing one or two-table movement, let the motor settle to scanning speed */
+ /* and scanning start before reading data */
+/* the valid data check already waits until the scanner delivers data. this here leads to unnecessary buffer full conditions in the scanner.
+ if (dev->model->cmd_set->get_fast_feed_bit (dev->reg))
+ usleep (1000 * 1000);
+ else
+ usleep (500 * 1000);
+*/
+ /* then we wait for at least one word of valid scan data
+
+ this is also done in sanei_genesys_read_data_from_scanner -- pierre */
+ if (dev->model->is_sheetfed == SANE_FALSE)
+ {
+ do
+ {
+ usleep (100 * 1000);
+ status = sanei_genesys_read_valid_words (dev, &steps);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_start_scan: failed to read valid words: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ while (steps < 1);
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/* this is _not_ a ringbuffer.
+ if we need a block which does not fit at the end of our available data,
+ we move the available data to the beginning.
+ */
+
+SANE_Status
+sanei_genesys_buffer_alloc (Genesys_Buffer * buf, size_t size)
+{
+ buf->buffer = (SANE_Byte *) malloc (size);
+ if (!buf->buffer)
+ return SANE_STATUS_NO_MEM;
+ buf->avail = 0;
+ buf->pos = 0;
+ buf->size = size;
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sanei_genesys_buffer_free (Genesys_Buffer * buf)
+{
+ SANE_Byte *tmp = buf->buffer;
+ buf->avail = 0;
+ buf->size = 0;
+ buf->pos = 0;
+ buf->buffer = NULL;
+ if (tmp)
+ free (tmp);
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Byte *
+sanei_genesys_buffer_get_write_pos (Genesys_Buffer * buf, size_t size)
+{
+ if (buf->avail + size > buf->size)
+ return NULL;
+ if (buf->pos + buf->avail + size > buf->size)
+ {
+ memmove (buf->buffer, buf->buffer + buf->pos, buf->avail);
+ buf->pos = 0;
+ }
+ return buf->buffer + buf->pos + buf->avail;
+}
+
+SANE_Byte *
+sanei_genesys_buffer_get_read_pos (Genesys_Buffer * buf)
+{
+ return buf->buffer + buf->pos;
+}
+
+SANE_Status
+sanei_genesys_buffer_produce (Genesys_Buffer * buf, size_t size)
+{
+ if (size > buf->size - buf->avail)
+ return SANE_STATUS_INVAL;
+ buf->avail += size;
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sanei_genesys_buffer_consume (Genesys_Buffer * buf, size_t size)
+{
+ if (size > buf->avail)
+ return SANE_STATUS_INVAL;
+ buf->avail -= size;
+ buf->pos += size;
+ return SANE_STATUS_GOOD;
+}
+
+
+#include "genesys_conv.c"
+
+static SANE_Status accurate_line_read(Genesys_Device * dev,
+ SANE_Byte *buffer,
+ size_t size)
+{
+ SANE_Status status;
+ status = dev->model->cmd_set->bulk_read_data (dev, 0x45, buffer, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "accurate_line_read: failed to read %lu bytes (%s)\n",
+ (u_long) size, sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ /* done reading */
+ dev->oe_buffer.avail = size;
+ dev->oe_buffer.pos = 0;
+ return status;
+}
+
+/** @brief fill buffer while reducing vertical resolution
+ * This function fills a read buffer with scanned data from a sensor
+ * which puts odd and even pixels in 2 different data segment. So a complete
+ * must be read and bytes interleaved to get usable by the other stages
+ * of the backend
+ */
+static SANE_Status
+genesys_fill_line_interp_buffer (Genesys_Device * dev, uint8_t *work_buffer_dst, size_t size)
+{
+ size_t count;
+ SANE_Status status;
+
+ /* fill buffer if needed */
+ if (dev->oe_buffer.avail == 0)
+ {
+ status = accurate_line_read(dev,dev->oe_buffer.buffer,dev->oe_buffer.size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read %lu bytes (%s)\n", __FUNCTION__,
+ (u_long) dev->oe_buffer.size, sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+ }
+
+ /* copy size bytes of data, copying from a line when line count matches */
+ count = 0;
+ while (count < size)
+ {
+ /* line counter */
+ /* dev->line_interp holds the number of lines scanned for one line of data sent */
+ if(((dev->line_count/dev->current_setup.channels) % dev->line_interp)==0)
+ {
+ /* copy pixel when line matches */
+ work_buffer_dst[count] = dev->oe_buffer.buffer[dev->cur + dev->oe_buffer.pos];
+ count++;
+ }
+
+ /* always update pointer so we skip uncopied data */
+ dev->cur++;
+
+ /* go to next line if needed */
+ if (dev->cur == dev->len)
+ {
+ dev->oe_buffer.pos += dev->bpl;
+ dev->cur = 0;
+ dev->line_count++;
+ }
+
+ /* read a new buffer if needed */
+ if (dev->oe_buffer.pos >= dev->oe_buffer.avail)
+ {
+ status = accurate_line_read(dev,dev->oe_buffer.buffer,dev->oe_buffer.size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read %lu bytes (%s)\n", __FUNCTION__,
+ (u_long) dev->oe_buffer.size, sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+ }
+ }
+
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief fill buffer for segmented sensors
+ * This function fills a read buffer with scanned data from a sensor segmented
+ * in several parts (multi-lines sensors). Data of the same valid area is read
+ * back to back and must be interleaved to get usable by the other stages
+ * of the backend
+ */
+static SANE_Status
+genesys_fill_segmented_buffer (Genesys_Device * dev, uint8_t *work_buffer_dst, size_t size)
+{
+ size_t count;
+ SANE_Status status;
+ int depth,i,n,k;
+
+ depth = dev->settings.depth;
+ if (dev->settings.scan_mode == SCAN_MODE_LINEART && dev->settings.dynamic_lineart==SANE_FALSE)
+ depth = 1;
+
+ /* fill buffer if needed */
+ if (dev->oe_buffer.avail == 0)
+ {
+ status = accurate_line_read(dev,dev->oe_buffer.buffer,dev->oe_buffer.size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read %lu bytes (%s)\n", __FUNCTION__,
+ (u_long) dev->oe_buffer.size, sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+ }
+
+ /* copy size bytes of data, copying from a subwindow of each line
+ * when last line of buffer is exhausted, read another one */
+ count = 0;
+ while (count < size)
+ {
+ if(dev->settings.double_xres==SANE_TRUE)
+ {
+ /* copy only even pixel */
+ work_buffer_dst[count] = dev->oe_buffer.buffer[dev->cur + dev->oe_buffer.pos];
+ /* update counter and pointer */
+ count++;
+ dev->cur++;
+ }
+ else
+ {
+ if(depth==1)
+ {
+ while (dev->cur < dev->len && count < size)
+ {
+ for(n=0;n<dev->segnb;n++)
+ {
+ work_buffer_dst[count+n] = 0;
+ }
+ /* interleaving is at bit level */
+ for(i=0;i<8;i++)
+ {
+ k=count+(i*dev->segnb)/8;
+ for(n=0;n<dev->segnb;n++)
+ {
+ work_buffer_dst[k] = work_buffer_dst[k] << 1;
+ if((dev->oe_buffer.buffer[dev->cur + dev->skip + dev->dist*dev->order[n] + dev->oe_buffer.pos])&(128>>i))
+ {
+ work_buffer_dst[k] |= 1;
+ }
+ }
+ }
+
+ /* update counter and pointer */
+ count += dev->segnb;
+ dev->cur++;
+ }
+ }
+ if(depth==8)
+ {
+ while (dev->cur < dev->len && count < size)
+ {
+ for(n=0;n<dev->segnb;n++)
+ {
+ work_buffer_dst[count+n] = dev->oe_buffer.buffer[dev->cur + dev->skip + dev->dist*dev->order[n] + dev->oe_buffer.pos];
+ }
+ /* update counter and pointer */
+ count += dev->segnb;
+ dev->cur++;
+ }
+ }
+ if(depth==16)
+ {
+ while (dev->cur < dev->len && count < size)
+ {
+ for(n=0;n<dev->segnb;n++)
+ {
+ work_buffer_dst[count+n*2] = dev->oe_buffer.buffer[dev->cur + dev->skip + dev->dist*dev->order[n] + dev->oe_buffer.pos];
+ work_buffer_dst[count+n*2+1] = dev->oe_buffer.buffer[dev->cur + dev->skip + dev->dist*dev->order[n] + dev->oe_buffer.pos+1];
+ }
+ /* update counter and pointer */
+ count += dev->segnb*2;
+ dev->cur+=2;
+ }
+ }
+ }
+
+ /* go to next line if needed */
+ if (dev->cur == dev->len)
+ {
+ dev->oe_buffer.pos += dev->bpl;
+ dev->cur = 0;
+ }
+
+ /* read a new buffer if needed */
+ if (dev->oe_buffer.pos >= dev->oe_buffer.avail)
+ {
+ status = accurate_line_read(dev,dev->oe_buffer.buffer,dev->oe_buffer.size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read %lu bytes (%s)\n", __FUNCTION__,
+ (u_long) dev->oe_buffer.size, sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+ }
+ }
+
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ *
+ */
+static SANE_Status
+genesys_fill_read_buffer (Genesys_Device * dev)
+{
+ size_t size;
+ size_t space;
+ SANE_Status status;
+ uint8_t *work_buffer_dst;
+
+ DBGSTART;
+
+ /* for sheetfed scanner, we must check is document is shorter than
+ * the requested scan */
+ if (dev->model->is_sheetfed == SANE_TRUE)
+ {
+ status = dev->model->cmd_set->detect_document_end (dev);
+ if (status != SANE_STATUS_GOOD)
+ return status;
+ }
+
+ space = dev->read_buffer.size - dev->read_buffer.avail;
+
+ work_buffer_dst = sanei_genesys_buffer_get_write_pos (&(dev->read_buffer),
+ space);
+
+ size = space;
+
+ /* never read an odd number. exception: last read
+ the chip internal counter does not count half words. */
+ size &= ~1;
+ /* Some setups need the reads to be multiples of 256 bytes */
+ size &= ~0xff;
+
+ if (dev->read_bytes_left < size)
+ {
+ size = dev->read_bytes_left;
+ /*round up to a multiple of 256 bytes */
+ size += (size & 0xff) ? 0x100 : 0x00;
+ size &= ~0xff;
+ }
+
+ /* early out if our remaining buffer capacity is too low */
+ if (size == 0)
+ return SANE_STATUS_GOOD;
+
+ DBG (DBG_io, "genesys_fill_read_buffer: reading %lu bytes\n",
+ (u_long) size);
+
+ /* size is already maxed to our needs. for most models bulk_read_data
+ will read as much data as requested. */
+
+ /* due to sensors and motors, not all data can be directly used. It
+ * may have to be read from another intermediate buffer and then processed.
+ * There are currently 3 intermediate stages:
+ * - handling of odd/even sensors
+ * - handling of line interpolation for motors that can't have low
+ * enough dpi
+ * - handling of multi-segments sensors
+ *
+ * This is also the place where full duplex data will be handled.
+ */
+ if (dev->line_interp>0)
+ {
+ /* line interpolation */
+ status = genesys_fill_line_interp_buffer (dev, work_buffer_dst, size);
+ }
+ else if (dev->segnb>1)
+ {
+ /* multi-segment sensors processing */
+ status = genesys_fill_segmented_buffer (dev, work_buffer_dst, size);
+ }
+ else /* regular case with no extra copy */
+ {
+ status = dev->model->cmd_set->bulk_read_data (dev, 0x45, work_buffer_dst, size);
+ }
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_fill_read_buffer: failed to read %lu bytes (%s)\n",
+ (u_long) size, sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ if (size > dev->read_bytes_left)
+ size = dev->read_bytes_left;
+
+ dev->read_bytes_left -= size;
+
+ RIE (sanei_genesys_buffer_produce (&(dev->read_buffer), size));
+
+ DBGCOMPLETED;
+
+ return SANE_STATUS_GOOD;
+}
+
+/* this function does the effective data read in a manner that suits
+ the scanner. It does data reordering and resizing if need.
+ It also manages EOF and I/O errors, and line distance correction.
+ */
+static SANE_Status
+genesys_read_ordered_data (Genesys_Device * dev, SANE_Byte * destination,
+ size_t * len)
+{
+ SANE_Status status;
+ size_t bytes, extra;
+ unsigned int channels, depth, src_pixels;
+ unsigned int ccd_shift[12], shift_count;
+ uint8_t *work_buffer_src;
+ uint8_t *work_buffer_dst;
+ unsigned int dst_lines;
+ unsigned int step_1_mode;
+ unsigned int needs_reorder;
+ unsigned int needs_ccd;
+ unsigned int needs_shrink;
+ unsigned int needs_reverse;
+ Genesys_Buffer *src_buffer;
+ Genesys_Buffer *dst_buffer;
+
+ DBGSTART;
+ if (dev->read_active != SANE_TRUE)
+ {
+ DBG (DBG_error, "genesys_read_ordered_data: read not active!\n");
+ *len = 0;
+ return SANE_STATUS_INVAL;
+ }
+
+
+ DBG (DBG_info, "genesys_read_ordered_data: dumping current_setup:\n"
+ "\tpixels: %d\n"
+ "\tlines: %d\n"
+ "\tdepth: %d\n"
+ "\tchannels: %d\n"
+ "\texposure_time: %d\n"
+ "\txres: %g\n"
+ "\tyres: %g\n"
+ "\thalf_ccd: %s\n"
+ "\tstagger: %d\n"
+ "\tmax_shift: %d\n",
+ dev->current_setup.pixels,
+ dev->current_setup.lines,
+ dev->current_setup.depth,
+ dev->current_setup.channels,
+ dev->current_setup.exposure_time,
+ dev->current_setup.xres,
+ dev->current_setup.yres,
+ dev->current_setup.half_ccd ? "yes" : "no",
+ dev->current_setup.stagger, dev->current_setup.max_shift);
+
+ /* prepare conversion */
+ /* current settings */
+ channels = dev->current_setup.channels;
+ depth = dev->current_setup.depth;
+
+ src_pixels = dev->current_setup.pixels;
+
+ needs_reorder = 1;
+ if (channels != 3 && depth != 16)
+ needs_reorder = 0;
+#ifndef WORDS_BIGENDIAN
+ if (channels != 3 && depth == 16)
+ needs_reorder = 0;
+ if (channels == 3 && depth == 16 && !dev->model->is_cis &&
+ dev->model->line_mode_color_order == COLOR_ORDER_RGB)
+ needs_reorder = 0;
+#endif
+ if (channels == 3 && depth == 8 && !dev->model->is_cis &&
+ dev->model->line_mode_color_order == COLOR_ORDER_RGB)
+ needs_reorder = 0;
+
+ needs_ccd = dev->current_setup.max_shift > 0;
+ needs_shrink = dev->settings.pixels != src_pixels;
+ needs_reverse = depth == 1;
+
+ DBG (DBG_info,
+ "genesys_read_ordered_data: using filters:%s%s%s%s\n",
+ needs_reorder ? " reorder" : "",
+ needs_ccd ? " ccd" : "",
+ needs_shrink ? " shrink" : "",
+ needs_reverse ? " reverse" : "");
+
+ DBG (DBG_info,
+ "genesys_read_ordered_data: frontend requested %lu bytes\n",
+ (u_long) * len);
+
+ DBG (DBG_info,
+ "genesys_read_ordered_data: bytes_to_read=%lu, total_bytes_read=%lu\n",
+ (u_long) dev->total_bytes_to_read, (u_long) dev->total_bytes_read);
+ /* is there data left to scan */
+ if (dev->total_bytes_read >= dev->total_bytes_to_read)
+ {
+ DBG (DBG_proc,
+ "genesys_read_ordered_data: nothing more to scan: EOF\n");
+ *len = 0;
+
+ /* issue park command immediatly in case scanner can handle it
+ * so we save time */
+ if (dev->model->is_sheetfed == SANE_FALSE
+ && !(dev->model->flags & GENESYS_FLAG_MUST_WAIT)
+ && dev->parking == SANE_FALSE)
+ {
+ dev->model->cmd_set->slow_back_home (dev, SANE_FALSE);
+ dev->parking = SANE_TRUE;
+ }
+ return SANE_STATUS_EOF;
+ }
+
+ DBG (DBG_info, "genesys_read_ordered_data: %lu lines left by output\n",
+ ((dev->total_bytes_to_read - dev->total_bytes_read) * 8UL) /
+ (dev->settings.pixels * channels * depth));
+ DBG (DBG_info, "genesys_read_ordered_data: %lu lines left by input\n",
+ ((dev->read_bytes_left + dev->read_buffer.avail) * 8UL) /
+ (src_pixels * channels * depth));
+
+ if (channels == 1)
+ {
+ ccd_shift[0] = 0;
+ ccd_shift[1] = dev->current_setup.stagger;
+ shift_count = 2;
+ }
+ else
+ {
+ ccd_shift[0] =
+ ((dev->ld_shift_r * dev->settings.yres) /
+ dev->motor.base_ydpi);
+ ccd_shift[1] =
+ ((dev->ld_shift_g * dev->settings.yres) /
+ dev->motor.base_ydpi);
+ ccd_shift[2] =
+ ((dev->ld_shift_b * dev->settings.yres) /
+ dev->motor.base_ydpi);
+
+ ccd_shift[3] = ccd_shift[0] + dev->current_setup.stagger;
+ ccd_shift[4] = ccd_shift[1] + dev->current_setup.stagger;
+ ccd_shift[5] = ccd_shift[2] + dev->current_setup.stagger;
+
+ shift_count = 6;
+ }
+
+
+/* convert data */
+/*
+ 0. fill_read_buffer
+-------------- read_buffer ----------------------
+ 1a). (opt)uncis (assumes color components to be laid out
+ planar)
+ 1b). (opt)reverse_RGB (assumes pixels to be BGR or BBGGRR))
+-------------- lines_buffer ----------------------
+ 2a). (opt)line_distance_correction (assumes RGB or RRGGBB)
+ 2b). (opt)unstagger (assumes pixels to be depth*channels/8
+ bytes long, unshrinked)
+------------- shrink_buffer ---------------------
+ 3. (opt)shrink_lines (assumes component separation in pixels)
+-------------- out_buffer -----------------------
+ 4. memcpy to destination (for lineart with bit reversal)
+*/
+/*FIXME: for lineart we need sub byte addressing in buffers, or conversion to
+ bytes at 0. and back to bits at 4.
+Problems with the first approach:
+ - its not clear how to check if we need to output an incomplete byte
+ because it is the last one.
+ */
+/*FIXME: add lineart support for gl646. in the meantime add logic to convert
+ from gray to lineart at the end? would suffer the above problem,
+ total_bytes_to_read and total_bytes_read help in that case.
+ */
+
+ status = genesys_fill_read_buffer (dev);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_read_ordered_data: genesys_fill_read_buffer failed\n");
+ return status;
+ }
+
+ src_buffer = &(dev->read_buffer);
+
+/* maybe reorder components/bytes */
+ if (needs_reorder)
+ {
+/*not implemented for depth == 1.*/
+ if (depth == 1)
+ {
+ DBG (DBG_error, "Can't reorder single bit data\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ dst_buffer = &(dev->lines_buffer);
+
+ work_buffer_src = sanei_genesys_buffer_get_read_pos (src_buffer);
+ bytes = src_buffer->avail;
+
+/*how many bytes can be processed here?*/
+/*we are greedy. we work as much as possible*/
+ if (bytes > dst_buffer->size - dst_buffer->avail)
+ bytes = dst_buffer->size - dst_buffer->avail;
+
+ dst_lines = (bytes * 8) / (src_pixels * channels * depth);
+ bytes = (dst_lines * src_pixels * channels * depth) / 8;
+
+ work_buffer_dst = sanei_genesys_buffer_get_write_pos (dst_buffer,
+ bytes);
+
+ DBG (DBG_info, "genesys_read_ordered_data: reordering %d lines\n",
+ dst_lines);
+
+ if (dst_lines != 0)
+ {
+
+ if (channels == 3)
+ {
+ step_1_mode = 0;
+
+ if (depth == 16)
+ step_1_mode |= 1;
+
+ if (dev->model->is_cis)
+ step_1_mode |= 2;
+
+ if (dev->model->line_mode_color_order == COLOR_ORDER_BGR)
+ step_1_mode |= 4;
+
+ switch (step_1_mode)
+ {
+ case 1: /* RGB, chunky, 16 bit */
+#ifdef WORDS_BIGENDIAN
+ status =
+ genesys_reorder_components_endian_16 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines,
+ src_pixels, 3);
+ break;
+#endif /*WORDS_BIGENDIAN */
+ case 0: /* RGB, chunky, 8 bit */
+ status = SANE_STATUS_GOOD;
+ break;
+ case 2: /* RGB, cis, 8 bit */
+ status =
+ genesys_reorder_components_cis_8 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines, src_pixels);
+ break;
+ case 3: /* RGB, cis, 16 bit */
+ status =
+ genesys_reorder_components_cis_16 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines, src_pixels);
+ break;
+ case 4: /* BGR, chunky, 8 bit */
+ status =
+ genesys_reorder_components_bgr_8 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines, src_pixels);
+ break;
+ case 5: /* BGR, chunky, 16 bit */
+ status =
+ genesys_reorder_components_bgr_16 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines, src_pixels);
+ break;
+ case 6: /* BGR, cis, 8 bit */
+ status =
+ genesys_reorder_components_cis_bgr_8 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines,
+ src_pixels);
+ break;
+ case 7: /* BGR, cis, 16 bit */
+ status =
+ genesys_reorder_components_cis_bgr_16 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines,
+ src_pixels);
+ break;
+ }
+ }
+ else
+ {
+#ifdef WORDS_BIGENDIAN
+ if (depth == 16)
+ {
+ status =
+ genesys_reorder_components_endian_16 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines,
+ src_pixels, 1);
+ }
+ else
+ {
+ status = SANE_STATUS_GOOD;
+ }
+#else /*!WORDS_BIGENDIAN */
+ status = SANE_STATUS_GOOD;
+#endif /*WORDS_BIGENDIAN */
+ }
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_read_ordered_data: failed to convert byte ordering(%s)\n",
+ sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ RIE (sanei_genesys_buffer_produce (dst_buffer, bytes));
+
+ RIE (sanei_genesys_buffer_consume (src_buffer, bytes));
+ }
+ src_buffer = dst_buffer;
+ }
+
+/* maybe reverse effects of ccd layout */
+ if (needs_ccd)
+ {
+/*should not happen with depth == 1.*/
+ if (depth == 1)
+ {
+ DBG (DBG_error, "Can't reverse ccd for single bit data\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ dst_buffer = &(dev->shrink_buffer);
+
+ work_buffer_src = sanei_genesys_buffer_get_read_pos (src_buffer);
+ bytes = src_buffer->avail;
+
+ extra =
+ (dev->current_setup.max_shift * src_pixels * channels * depth) / 8;
+
+/*extra bytes are reserved, and should not be consumed*/
+ if (bytes < extra)
+ bytes = 0;
+ else
+ bytes -= extra;
+
+/*how many bytes can be processed here?*/
+/*we are greedy. we work as much as possible*/
+ if (bytes > dst_buffer->size - dst_buffer->avail)
+ bytes = dst_buffer->size - dst_buffer->avail;
+
+ dst_lines = (bytes * 8) / (src_pixels * channels * depth);
+ bytes = (dst_lines * src_pixels * channels * depth) / 8;
+
+ work_buffer_dst =
+ sanei_genesys_buffer_get_write_pos (dst_buffer, bytes);
+
+ DBG (DBG_info, "genesys_read_ordered_data: un-ccd-ing %d lines\n",
+ dst_lines);
+
+ if (dst_lines != 0)
+ {
+
+ if (depth == 8)
+ status = genesys_reverse_ccd_8 (work_buffer_src, work_buffer_dst,
+ dst_lines,
+ src_pixels * channels,
+ ccd_shift, shift_count);
+ else
+ status = genesys_reverse_ccd_16 (work_buffer_src, work_buffer_dst,
+ dst_lines,
+ src_pixels * channels,
+ ccd_shift, shift_count);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_read_ordered_data: failed to reverse ccd effects(%s)\n",
+ sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ RIE (sanei_genesys_buffer_produce (dst_buffer, bytes));
+
+ RIE (sanei_genesys_buffer_consume (src_buffer, bytes));
+ }
+ src_buffer = dst_buffer;
+ }
+
+/* maybe shrink(or enlarge) lines */
+ if (needs_shrink)
+ {
+
+ dst_buffer = &(dev->out_buffer);
+
+ work_buffer_src = sanei_genesys_buffer_get_read_pos (src_buffer);
+ bytes = src_buffer->avail;
+
+/*lines in input*/
+ dst_lines = (bytes * 8) / (src_pixels * channels * depth);
+
+ /* how many lines can be processed here? */
+ /* we are greedy. we work as much as possible */
+ bytes = dst_buffer->size - dst_buffer->avail;
+
+ if (dst_lines > (bytes * 8) / (dev->settings.pixels * channels * depth))
+ dst_lines = (bytes * 8) / (dev->settings.pixels * channels * depth);
+
+ bytes = (dst_lines * dev->settings.pixels * channels * depth) / 8;
+
+ work_buffer_dst =
+ sanei_genesys_buffer_get_write_pos (dst_buffer, bytes);
+
+ DBG (DBG_info, "genesys_read_ordered_data: shrinking %d lines\n",
+ dst_lines);
+
+ if (dst_lines != 0)
+ {
+ if (depth == 1)
+ status = genesys_shrink_lines_1 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines,
+ src_pixels,
+ dev->settings.pixels,
+ channels);
+ else if (depth == 8)
+ status = genesys_shrink_lines_8 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines,
+ src_pixels,
+ dev->settings.pixels, channels);
+ else
+ status = genesys_shrink_lines_16 (work_buffer_src,
+ work_buffer_dst,
+ dst_lines,
+ src_pixels,
+ dev->settings.pixels, channels);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_read_ordered_data: failed to shrink lines(%s)\n",
+ sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ /* we just consumed this many bytes*/
+ bytes = (dst_lines * src_pixels * channels * depth) / 8;
+ RIE (sanei_genesys_buffer_consume (src_buffer, bytes));
+
+ /* we just created this many bytes*/
+ bytes = (dst_lines * dev->settings.pixels * channels * depth) / 8;
+ RIE (sanei_genesys_buffer_produce (dst_buffer, bytes));
+
+ }
+ src_buffer = dst_buffer;
+ }
+
+ /* move data to destination */
+ bytes = src_buffer->avail;
+ if (bytes > *len)
+ bytes = *len;
+ work_buffer_src = sanei_genesys_buffer_get_read_pos (src_buffer);
+
+ if (needs_reverse)
+ {
+ status = genesys_reverse_bits (work_buffer_src, destination, bytes);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_read_ordered_data: failed to reverse bits(%s)\n",
+ sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+ *len = bytes;
+ }
+ else
+ {
+ memcpy (destination, work_buffer_src, bytes);
+ *len = bytes;
+ }
+
+ /* avoid signaling some extra data because we have treated a full block
+ * on the last block */
+ if (dev->total_bytes_read + *len > dev->total_bytes_to_read)
+ *len = dev->total_bytes_to_read - dev->total_bytes_read;
+
+ /* count bytes sent to frontend */
+ dev->total_bytes_read += *len;
+
+ RIE (sanei_genesys_buffer_consume (src_buffer, bytes));
+
+ /* end scan if all needed data have been read */
+ if(dev->total_bytes_read >= dev->total_bytes_to_read)
+ {
+ dev->model->cmd_set->end_scan (dev, dev->reg, SANE_TRUE);
+ if (dev->model->is_sheetfed == SANE_TRUE)
+ {
+ dev->model->cmd_set->eject_document (dev);
+ }
+ }
+
+ DBG (DBG_proc, "genesys_read_ordered_data: completed, %lu bytes read\n",
+ (u_long) bytes);
+ return SANE_STATUS_GOOD;
+}
+
+
+
+/* ------------------------------------------------------------------------ */
+/* Start of higher level functions */
+/* ------------------------------------------------------------------------ */
+
+static size_t
+max_string_size (const SANE_String_Const strings[])
+{
+ size_t size, max_size = 0;
+ SANE_Int i;
+
+ for (i = 0; strings[i]; ++i)
+ {
+ size = strlen (strings[i]) + 1;
+ if (size > max_size)
+ max_size = size;
+ }
+ return max_size;
+}
+
+static SANE_Status
+calc_parameters (Genesys_Scanner * s)
+{
+ SANE_String mode, source, color_filter;
+ SANE_Status status = SANE_STATUS_GOOD;
+ SANE_Int depth = 0, resolution = 0;
+ double tl_x = 0, tl_y = 0, br_x = 0, br_y = 0;
+
+ mode = s->val[OPT_MODE].s;
+ source = s->val[OPT_SOURCE].s;
+ color_filter = s->val[OPT_COLOR_FILTER].s;
+ depth = s->val[OPT_BIT_DEPTH].w;
+ resolution = s->val[OPT_RESOLUTION].w;
+ tl_x = SANE_UNFIX (s->val[OPT_TL_X].w);
+ tl_y = SANE_UNFIX (s->val[OPT_TL_Y].w);
+ br_x = SANE_UNFIX (s->val[OPT_BR_X].w);
+ br_y = SANE_UNFIX (s->val[OPT_BR_Y].w);
+
+ s->params.last_frame = SANE_TRUE; /* only single pass scanning supported */
+
+ if (strcmp (mode, SANE_VALUE_SCAN_MODE_GRAY) == 0
+ || strcmp (mode, SANE_VALUE_SCAN_MODE_LINEART) == 0)
+ s->params.format = SANE_FRAME_GRAY;
+ else /* Color */
+ s->params.format = SANE_FRAME_RGB;
+
+ if (strcmp (mode, SANE_VALUE_SCAN_MODE_LINEART) == 0)
+ s->params.depth = 1;
+ else
+ s->params.depth = depth;
+ s->dev->settings.depth = depth;
+
+ /* interpolation */
+ s->dev->settings.disable_interpolation =
+ s->val[OPT_DISABLE_INTERPOLATION].w == SANE_TRUE;
+
+ /* hardware settings */
+ if (resolution > s->dev->sensor.optical_res &&
+ s->dev->settings.disable_interpolation)
+ s->dev->settings.xres = s->dev->sensor.optical_res;
+ else
+ s->dev->settings.xres = resolution;
+ s->dev->settings.yres = resolution;
+
+ s->params.lines = ((br_y - tl_y) * s->dev->settings.yres) / MM_PER_INCH;
+ s->params.pixels_per_line =
+ ((br_x - tl_x) * resolution) / MM_PER_INCH;
+
+ /* we need an even pixels number
+ * TODO invert test logic or generalize behaviour across all ASICs */
+ if ((s->dev->model->flags & GENESYS_FLAG_SIS_SENSOR)
+ || s->dev->model->asic_type == GENESYS_GL847
+ || s->dev->model->asic_type == GENESYS_GL124
+ || s->dev->model->asic_type == GENESYS_GL845
+ || s->dev->model->asic_type == GENESYS_GL846
+ || s->dev->model->asic_type == GENESYS_GL843)
+ {
+ if (s->dev->settings.xres <= 1200)
+ s->params.pixels_per_line = (s->params.pixels_per_line/4)*4;
+ else
+ s->params.pixels_per_line = (s->params.pixels_per_line/16)*16;
+ }
+
+ /* corner case for true lineart for sensor with several segments
+ * or when xres is doubled to match yres */
+ if (s->dev->settings.xres >= 1200
+ && ( s->dev->model->asic_type == GENESYS_GL124
+ || s->dev->model->asic_type == GENESYS_GL847
+ || s->dev->current_setup.xres < s->dev->current_setup.yres
+ )
+ )
+ {
+ s->params.pixels_per_line = (s->params.pixels_per_line/16)*16;
+ }
+
+ s->params.bytes_per_line = s->params.pixels_per_line;
+ if (s->params.depth > 8)
+ {
+ s->params.depth = 16;
+ s->params.bytes_per_line *= 2;
+ }
+ else if (s->params.depth == 1)
+ {
+ s->params.bytes_per_line /= 8;
+ /* round down pixel number
+ really? rounding down means loss of at most 7 pixels! -- pierre */
+ s->params.pixels_per_line = 8 * s->params.bytes_per_line;
+ }
+
+ if (s->params.format == SANE_FRAME_RGB)
+ s->params.bytes_per_line *= 3;
+
+ if (strcmp (mode, SANE_VALUE_SCAN_MODE_COLOR) == 0)
+ s->dev->settings.scan_mode = SCAN_MODE_COLOR;
+ else if (strcmp (mode, SANE_VALUE_SCAN_MODE_GRAY) == 0)
+ s->dev->settings.scan_mode = SCAN_MODE_GRAY;
+ else if (strcmp (mode, SANE_TITLE_HALFTONE) == 0)
+ s->dev->settings.scan_mode = SCAN_MODE_HALFTONE;
+ else /* Lineart */
+ s->dev->settings.scan_mode = SCAN_MODE_LINEART;
+
+ /* TODO: change and check */
+ if (strcmp (source, FLATBED) == 0)
+ s->dev->settings.scan_method = SCAN_METHOD_FLATBED;
+ else /* transparency */
+ s->dev->settings.scan_method = SCAN_METHOD_TRANSPARENCY;
+
+ s->dev->settings.lines = s->params.lines;
+ s->dev->settings.pixels = s->params.pixels_per_line;
+ s->dev->settings.tl_x = tl_x;
+ s->dev->settings.tl_y = tl_y;
+
+ /* threshold setting */
+ s->dev->settings.threshold = 2.55 * (SANE_UNFIX (s->val[OPT_THRESHOLD].w));
+
+ /* color filter */
+ if (strcmp (color_filter, "Red") == 0)
+ s->dev->settings.color_filter = 0;
+ else if (strcmp (color_filter, "Green") == 0)
+ s->dev->settings.color_filter = 1;
+ else if (strcmp (color_filter, "Blue") == 0)
+ s->dev->settings.color_filter = 2;
+ else
+ s->dev->settings.color_filter = 3;
+
+ /* true gray */
+ if (strcmp (color_filter, "None") == 0)
+ s->dev->settings.true_gray = 1;
+ else
+ s->dev->settings.true_gray = 0;
+
+ /* dynamic lineart */
+ s->dev->settings.dynamic_lineart = SANE_FALSE;
+ s->dev->settings.threshold_curve=0;
+ if(s->val[OPT_DISABLE_DYNAMIC_LINEART].w ==SANE_FALSE
+ &&s->dev->settings.scan_mode == SCAN_MODE_LINEART)
+ {
+ s->dev->settings.dynamic_lineart = SANE_TRUE;
+ }
+
+ /* hardware lineart works only when we don't have interleave data
+ * for GL847 scanners, ie up to 600 DPI, then we have to rely on
+ * dynamic_lineart */
+ if(s->dev->settings.xres > 600
+ && s->dev->model->asic_type==GENESYS_GL847
+ && s->dev->settings.scan_mode == SCAN_MODE_LINEART)
+ {
+ s->dev->settings.dynamic_lineart = SANE_TRUE;
+ }
+
+ /* threshold curve for dynamic rasterization */
+ s->dev->settings.threshold_curve=s->val[OPT_THRESHOLD_CURVE].w;
+
+ /* some digital processing requires the whole picture to be buffered */
+ /* no digital processing takes place when doing preview, or when bit depth is
+ * higher than 8 bits */
+ if ((s->val[OPT_SWDESPECK].b
+ || s->val[OPT_SWCROP].b
+ || s->val[OPT_SWDESKEW].b
+ || s->val[OPT_SWDEROTATE].b
+ ||(SANE_UNFIX(s->val[OPT_SWSKIP].w)>0))
+ && (!s->val[OPT_PREVIEW].b)
+ && (s->val[OPT_BIT_DEPTH].w <= 8))
+ {
+ s->dev->buffer_image=SANE_TRUE;
+ }
+ else
+ {
+ s->dev->buffer_image=SANE_FALSE;
+ }
+
+ /* brigthness and contrast only for for 8 bit scans */
+ if(s->val[OPT_BIT_DEPTH].w <= 8)
+ {
+ s->dev->settings.contrast=(s->val[OPT_CONTRAST].w*127)/100;
+ s->dev->settings.brightness=(s->val[OPT_BRIGHTNESS].w*127)/100;
+ }
+ else
+ {
+ s->dev->settings.contrast=0;
+ s->dev->settings.brightness=0;
+ }
+
+ return status;
+}
+
+
+static SANE_Status
+create_bpp_list (Genesys_Scanner * s, SANE_Int * bpp)
+{
+ int count;
+
+ for (count = 0; bpp[count] != 0; count++)
+ ;
+ s->bpp_list[0] = count;
+ for (count = 0; bpp[count] != 0; count++)
+ {
+ s->bpp_list[s->bpp_list[0] - count] = bpp[count];
+ }
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief this function initialize a gamma vector based on the ASIC:
+ * Set up a default gamma table vector based on device description
+ * gl646: 12 or 14 bits gamma table depending on GENESYS_FLAG_14BIT_GAMMA
+ * gl84x: 16 bits
+ * gl12x: 16 bits
+ * @param scanner pointer to scanner session to get options
+ * @param option option number of the gamma table to set
+ */
+static void
+init_gamma_vector_option (Genesys_Scanner * scanner, int option)
+{
+ /* the option is inactive until the custom gamma control
+ * is enabled */
+ scanner->opt[option].type = SANE_TYPE_INT;
+ scanner->opt[option].cap |= SANE_CAP_INACTIVE | SANE_CAP_ADVANCED;
+ scanner->opt[option].unit = SANE_UNIT_NONE;
+ scanner->opt[option].constraint_type = SANE_CONSTRAINT_RANGE;
+ if (scanner->dev->model->asic_type == GENESYS_GL646)
+ {
+ if ((scanner->dev->model->flags & GENESYS_FLAG_14BIT_GAMMA) != 0)
+ {
+ scanner->opt[option].size = 16384 * sizeof (SANE_Word);
+ scanner->opt[option].constraint.range = &u14_range;
+ }
+ else
+ { /* 12 bits gamma tables */
+ scanner->opt[option].size = 4096 * sizeof (SANE_Word);
+ scanner->opt[option].constraint.range = &u12_range;
+ }
+ }
+ else
+ { /* other asics have 16 bits words gamma table */
+ scanner->opt[option].size = 256 * sizeof (SANE_Word);
+ scanner->opt[option].constraint.range = &u16_range;
+ }
+ /* default value is NULL */
+ scanner->val[option].wa = NULL;
+}
+
+/**
+ * allocate a geometry range
+ * @param size maximum size of the range
+ * @return a pointer to a valid range or NULL
+ */
+static SANE_Range *create_range(SANE_Fixed size)
+{
+SANE_Range *range=NULL;
+
+ range=(SANE_Range *)malloc(sizeof(SANE_Range));
+ if(range!=NULL)
+ {
+ range->min = SANE_FIX (0.0);
+ range->max = size;
+ range->quant = SANE_FIX (0.0);
+ }
+ return range;
+}
+
+
+static SANE_Status
+init_options (Genesys_Scanner * s)
+{
+ SANE_Int option, count, min_dpi;
+ SANE_Status status;
+ SANE_Word *dpi_list;
+ Genesys_Model *model = s->dev->model;
+ SANE_Range *x_range, *y_range;
+
+ DBGSTART;
+
+ memset (s->opt, 0, sizeof (s->opt));
+ memset (s->val, 0, sizeof (s->val));
+
+ for (option = 0; option < NUM_OPTIONS; ++option)
+ {
+ s->opt[option].size = sizeof (SANE_Word);
+ s->opt[option].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT;
+ }
+ s->opt[OPT_NUM_OPTS].name = SANE_NAME_NUM_OPTIONS;
+ s->opt[OPT_NUM_OPTS].title = SANE_TITLE_NUM_OPTIONS;
+ s->opt[OPT_NUM_OPTS].desc = SANE_DESC_NUM_OPTIONS;
+ s->opt[OPT_NUM_OPTS].type = SANE_TYPE_INT;
+ s->opt[OPT_NUM_OPTS].cap = SANE_CAP_SOFT_DETECT;
+ s->val[OPT_NUM_OPTS].w = NUM_OPTIONS;
+
+ /* "Mode" group: */
+ s->opt[OPT_MODE_GROUP].title = SANE_I18N ("Scan Mode");
+ s->opt[OPT_MODE_GROUP].desc = "";
+ s->opt[OPT_MODE_GROUP].type = SANE_TYPE_GROUP;
+ s->opt[OPT_MODE_GROUP].size = 0;
+ s->opt[OPT_MODE_GROUP].cap = 0;
+ s->opt[OPT_MODE_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+ /* scan mode */
+ s->opt[OPT_MODE].name = SANE_NAME_SCAN_MODE;
+ s->opt[OPT_MODE].title = SANE_TITLE_SCAN_MODE;
+ s->opt[OPT_MODE].desc = SANE_DESC_SCAN_MODE;
+ s->opt[OPT_MODE].type = SANE_TYPE_STRING;
+ s->opt[OPT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+ s->opt[OPT_MODE].size = max_string_size (mode_list);
+ s->opt[OPT_MODE].constraint.string_list = mode_list;
+ s->val[OPT_MODE].s = strdup (SANE_VALUE_SCAN_MODE_GRAY);
+
+ /* scan source */
+ s->opt[OPT_SOURCE].name = SANE_NAME_SCAN_SOURCE;
+ s->opt[OPT_SOURCE].title = SANE_TITLE_SCAN_SOURCE;
+ s->opt[OPT_SOURCE].desc = SANE_DESC_SCAN_SOURCE;
+ s->opt[OPT_SOURCE].type = SANE_TYPE_STRING;
+ s->opt[OPT_SOURCE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+ s->opt[OPT_SOURCE].size = max_string_size (source_list);
+ s->opt[OPT_SOURCE].constraint.string_list = source_list;
+ s->val[OPT_SOURCE].s = strdup (FLATBED);
+ if (!(model->flags & GENESYS_FLAG_HAS_UTA))
+ {
+ DISABLE (OPT_SOURCE);
+ }
+ else
+ {
+ ENABLE (OPT_SOURCE);
+ }
+
+ /* preview */
+ s->opt[OPT_PREVIEW].name = SANE_NAME_PREVIEW;
+ s->opt[OPT_PREVIEW].title = SANE_TITLE_PREVIEW;
+ s->opt[OPT_PREVIEW].desc = SANE_DESC_PREVIEW;
+ s->opt[OPT_PREVIEW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_PREVIEW].unit = SANE_UNIT_NONE;
+ s->opt[OPT_PREVIEW].constraint_type = SANE_CONSTRAINT_NONE;
+ s->val[OPT_PREVIEW].w = SANE_FALSE;
+
+ /* bit depth */
+ s->opt[OPT_BIT_DEPTH].name = SANE_NAME_BIT_DEPTH;
+ s->opt[OPT_BIT_DEPTH].title = SANE_TITLE_BIT_DEPTH;
+ s->opt[OPT_BIT_DEPTH].desc = SANE_DESC_BIT_DEPTH;
+ s->opt[OPT_BIT_DEPTH].type = SANE_TYPE_INT;
+ s->opt[OPT_BIT_DEPTH].constraint_type = SANE_CONSTRAINT_WORD_LIST;
+ s->opt[OPT_BIT_DEPTH].size = sizeof (SANE_Word);
+ s->opt[OPT_BIT_DEPTH].constraint.word_list = 0;
+ s->opt[OPT_BIT_DEPTH].constraint.word_list = s->bpp_list;
+ create_bpp_list (s, model->bpp_gray_values);
+ s->val[OPT_BIT_DEPTH].w = 8;
+ if (s->opt[OPT_BIT_DEPTH].constraint.word_list[0] < 2)
+ DISABLE (OPT_BIT_DEPTH);
+
+ /* resolution */
+ min_dpi=200000;
+ for (count = 0; model->xdpi_values[count] != 0; count++)
+ {
+ if(model->xdpi_values[count]<min_dpi)
+ {
+ min_dpi=model->xdpi_values[count];
+ }
+ }
+ dpi_list = malloc ((count + 1) * sizeof (SANE_Word));
+ if (!dpi_list)
+ return SANE_STATUS_NO_MEM;
+ dpi_list[0] = count;
+ for (count = 0; model->xdpi_values[count] != 0; count++)
+ dpi_list[count + 1] = model->xdpi_values[count];
+ s->opt[OPT_RESOLUTION].name = SANE_NAME_SCAN_RESOLUTION;
+ s->opt[OPT_RESOLUTION].title = SANE_TITLE_SCAN_RESOLUTION;
+ s->opt[OPT_RESOLUTION].desc = SANE_DESC_SCAN_RESOLUTION;
+ s->opt[OPT_RESOLUTION].type = SANE_TYPE_INT;
+ s->opt[OPT_RESOLUTION].unit = SANE_UNIT_DPI;
+ s->opt[OPT_RESOLUTION].constraint_type = SANE_CONSTRAINT_WORD_LIST;
+ s->opt[OPT_RESOLUTION].constraint.word_list = dpi_list;
+ s->val[OPT_RESOLUTION].w = min_dpi;
+
+ /* "Geometry" group: */
+ s->opt[OPT_GEOMETRY_GROUP].title = SANE_I18N ("Geometry");
+ s->opt[OPT_GEOMETRY_GROUP].desc = "";
+ s->opt[OPT_GEOMETRY_GROUP].type = SANE_TYPE_GROUP;
+ s->opt[OPT_GEOMETRY_GROUP].cap = SANE_CAP_ADVANCED;
+ s->opt[OPT_GEOMETRY_GROUP].size = 0;
+ s->opt[OPT_GEOMETRY_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+ x_range=create_range(model->x_size);
+ if(x_range==NULL)
+ {
+ return SANE_STATUS_NO_MEM;
+ }
+
+ y_range=create_range(model->y_size);
+ if(y_range==NULL)
+ {
+ return SANE_STATUS_NO_MEM;
+ }
+
+ /* top-left x */
+ s->opt[OPT_TL_X].name = SANE_NAME_SCAN_TL_X;
+ s->opt[OPT_TL_X].title = SANE_TITLE_SCAN_TL_X;
+ s->opt[OPT_TL_X].desc = SANE_DESC_SCAN_TL_X;
+ s->opt[OPT_TL_X].type = SANE_TYPE_FIXED;
+ s->opt[OPT_TL_X].unit = SANE_UNIT_MM;
+ s->opt[OPT_TL_X].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_TL_X].constraint.range = x_range;
+ s->val[OPT_TL_X].w = 0;
+
+ /* top-left y */
+ s->opt[OPT_TL_Y].name = SANE_NAME_SCAN_TL_Y;
+ s->opt[OPT_TL_Y].title = SANE_TITLE_SCAN_TL_Y;
+ s->opt[OPT_TL_Y].desc = SANE_DESC_SCAN_TL_Y;
+ s->opt[OPT_TL_Y].type = SANE_TYPE_FIXED;
+ s->opt[OPT_TL_Y].unit = SANE_UNIT_MM;
+ s->opt[OPT_TL_Y].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_TL_Y].constraint.range = y_range;
+ s->val[OPT_TL_Y].w = 0;
+
+ /* bottom-right x */
+ s->opt[OPT_BR_X].name = SANE_NAME_SCAN_BR_X;
+ s->opt[OPT_BR_X].title = SANE_TITLE_SCAN_BR_X;
+ s->opt[OPT_BR_X].desc = SANE_DESC_SCAN_BR_X;
+ s->opt[OPT_BR_X].type = SANE_TYPE_FIXED;
+ s->opt[OPT_BR_X].unit = SANE_UNIT_MM;
+ s->opt[OPT_BR_X].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_BR_X].constraint.range = x_range;
+ s->val[OPT_BR_X].w = x_range->max;
+
+ /* bottom-right y */
+ s->opt[OPT_BR_Y].name = SANE_NAME_SCAN_BR_Y;
+ s->opt[OPT_BR_Y].title = SANE_TITLE_SCAN_BR_Y;
+ s->opt[OPT_BR_Y].desc = SANE_DESC_SCAN_BR_Y;
+ s->opt[OPT_BR_Y].type = SANE_TYPE_FIXED;
+ s->opt[OPT_BR_Y].unit = SANE_UNIT_MM;
+ s->opt[OPT_BR_Y].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_BR_Y].constraint.range = y_range;
+ s->val[OPT_BR_Y].w = y_range->max;
+
+ /* "Enhancement" group: */
+ s->opt[OPT_ENHANCEMENT_GROUP].title = SANE_I18N ("Enhancement");
+ s->opt[OPT_ENHANCEMENT_GROUP].desc = "";
+ s->opt[OPT_ENHANCEMENT_GROUP].type = SANE_TYPE_GROUP;
+ s->opt[OPT_ENHANCEMENT_GROUP].cap = SANE_CAP_ADVANCED;
+ s->opt[OPT_ENHANCEMENT_GROUP].size = 0;
+ s->opt[OPT_ENHANCEMENT_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+ /* custom-gamma table */
+ s->opt[OPT_CUSTOM_GAMMA].name = SANE_NAME_CUSTOM_GAMMA;
+ s->opt[OPT_CUSTOM_GAMMA].title = SANE_TITLE_CUSTOM_GAMMA;
+ s->opt[OPT_CUSTOM_GAMMA].desc = SANE_DESC_CUSTOM_GAMMA;
+ s->opt[OPT_CUSTOM_GAMMA].type = SANE_TYPE_BOOL;
+ s->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_ADVANCED;
+ s->val[OPT_CUSTOM_GAMMA].b = SANE_FALSE;
+
+ /* grayscale gamma vector */
+ s->opt[OPT_GAMMA_VECTOR].name = SANE_NAME_GAMMA_VECTOR;
+ s->opt[OPT_GAMMA_VECTOR].title = SANE_TITLE_GAMMA_VECTOR;
+ s->opt[OPT_GAMMA_VECTOR].desc = SANE_DESC_GAMMA_VECTOR;
+ init_gamma_vector_option (s, OPT_GAMMA_VECTOR);
+
+ /* red gamma vector */
+ s->opt[OPT_GAMMA_VECTOR_R].name = SANE_NAME_GAMMA_VECTOR_R;
+ s->opt[OPT_GAMMA_VECTOR_R].title = SANE_TITLE_GAMMA_VECTOR_R;
+ s->opt[OPT_GAMMA_VECTOR_R].desc = SANE_DESC_GAMMA_VECTOR_R;
+ init_gamma_vector_option (s, OPT_GAMMA_VECTOR_R);
+
+ /* green gamma vector */
+ s->opt[OPT_GAMMA_VECTOR_G].name = SANE_NAME_GAMMA_VECTOR_G;
+ s->opt[OPT_GAMMA_VECTOR_G].title = SANE_TITLE_GAMMA_VECTOR_G;
+ s->opt[OPT_GAMMA_VECTOR_G].desc = SANE_DESC_GAMMA_VECTOR_G;
+ init_gamma_vector_option (s, OPT_GAMMA_VECTOR_G);
+
+ /* blue gamma vector */
+ s->opt[OPT_GAMMA_VECTOR_B].name = SANE_NAME_GAMMA_VECTOR_B;
+ s->opt[OPT_GAMMA_VECTOR_B].title = SANE_TITLE_GAMMA_VECTOR_B;
+ s->opt[OPT_GAMMA_VECTOR_B].desc = SANE_DESC_GAMMA_VECTOR_B;
+ init_gamma_vector_option (s, OPT_GAMMA_VECTOR_B);
+
+ /* currently, there are only gamma table options in this group,
+ * so if the scanner doesn't support gamma table, disable the
+ * whole group */
+ if (!(model->flags & GENESYS_FLAG_CUSTOM_GAMMA))
+ {
+ s->opt[OPT_ENHANCEMENT_GROUP].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
+ DBG (DBG_info, "init_options: custom gamma disabled\n");
+ }
+
+ /* software base image enhancements, these are consuming as many
+ * memory than used by the full scanned image and may fail at high
+ * resolution
+ */
+ /* software deskew */
+ s->opt[OPT_SWDESKEW].name = "swdeskew";
+ s->opt[OPT_SWDESKEW].title = "Software deskew";
+ s->opt[OPT_SWDESKEW].desc = "Request backend to rotate skewed pages digitally";
+ s->opt[OPT_SWDESKEW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_SWDESKEW].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT | SANE_CAP_ADVANCED;
+ s->val[OPT_SWDESKEW].b = SANE_FALSE;
+
+ /* software deskew */
+ s->opt[OPT_SWDESPECK].name = "swdespeck";
+ s->opt[OPT_SWDESPECK].title = "Software despeck";
+ s->opt[OPT_SWDESPECK].desc = "Request backend to remove lone dots digitally";
+ s->opt[OPT_SWDESPECK].type = SANE_TYPE_BOOL;
+ s->opt[OPT_SWDESPECK].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT | SANE_CAP_ADVANCED;
+ s->val[OPT_SWDESPECK].b = SANE_FALSE;
+
+ /* software despeckle radius */
+ s->opt[OPT_DESPECK].name = "despeck";
+ s->opt[OPT_DESPECK].title = "Software despeckle diameter";
+ s->opt[OPT_DESPECK].desc = "Maximum diameter of lone dots to remove from scan";
+ s->opt[OPT_DESPECK].type = SANE_TYPE_INT;
+ s->opt[OPT_DESPECK].unit = SANE_UNIT_NONE;
+ s->opt[OPT_DESPECK].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_DESPECK].constraint.range = &swdespeck_range;
+ s->opt[OPT_DESPECK].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT | SANE_CAP_ADVANCED;
+ s->val[OPT_DESPECK].w = 1;
+
+ /* crop by software */
+ s->opt[OPT_SWCROP].name = "swcrop";
+ s->opt[OPT_SWCROP].title = SANE_I18N ("Software crop");
+ s->opt[OPT_SWCROP].desc = SANE_I18N ("Request backend to remove border from pages digitally");
+ s->opt[OPT_SWCROP].type = SANE_TYPE_BOOL;
+ s->opt[OPT_SWCROP].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT | SANE_CAP_ADVANCED;
+ s->opt[OPT_SWCROP].unit = SANE_UNIT_NONE;
+ s->val[OPT_SWCROP].b = SANE_FALSE;
+
+ /* Software blank page skip */
+ s->opt[OPT_SWSKIP].name = "swskip";
+ s->opt[OPT_SWSKIP].title = SANE_I18N ("Software blank skip percentage");
+ s->opt[OPT_SWSKIP].desc = SANE_I18N("Request driver to discard pages with low numbers of dark pixels");
+ s->opt[OPT_SWSKIP].type = SANE_TYPE_FIXED;
+ s->opt[OPT_SWSKIP].unit = SANE_UNIT_PERCENT;
+ s->opt[OPT_SWSKIP].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_SWSKIP].constraint.range = &(percentage_range);
+ s->opt[OPT_SWSKIP].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT | SANE_CAP_ADVANCED;
+ /* disable by default */
+ s->val[OPT_SWSKIP].w = 0;
+
+ /* Software Derotate */
+ s->opt[OPT_SWDEROTATE].name = "swderotate";
+ s->opt[OPT_SWDEROTATE].title = SANE_I18N ("Software derotate");
+ s->opt[OPT_SWDEROTATE].desc = SANE_I18N("Request driver to detect and correct 90 degree image rotation");
+ s->opt[OPT_SWDEROTATE].type = SANE_TYPE_BOOL;
+ s->opt[OPT_SWDEROTATE].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT | SANE_CAP_ADVANCED;
+ s->opt[OPT_SWDEROTATE].unit = SANE_UNIT_NONE;
+ s->val[OPT_SWDEROTATE].b = SANE_FALSE;
+
+ /* Software brightness */
+ s->opt[OPT_BRIGHTNESS].name = SANE_NAME_BRIGHTNESS;
+ s->opt[OPT_BRIGHTNESS].title = SANE_TITLE_BRIGHTNESS;
+ s->opt[OPT_BRIGHTNESS].desc = SANE_DESC_BRIGHTNESS;
+ s->opt[OPT_BRIGHTNESS].type = SANE_TYPE_INT;
+ s->opt[OPT_BRIGHTNESS].unit = SANE_UNIT_NONE;
+ s->opt[OPT_BRIGHTNESS].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_BRIGHTNESS].constraint.range = &(enhance_range);
+ s->opt[OPT_BRIGHTNESS].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT;
+ /* disable by default */
+ s->val[OPT_BRIGHTNESS].w = 0;
+
+ /* Sowftware contrast */
+ s->opt[OPT_CONTRAST].name = SANE_NAME_CONTRAST;
+ s->opt[OPT_CONTRAST].title = SANE_TITLE_CONTRAST;
+ s->opt[OPT_CONTRAST].desc = SANE_DESC_CONTRAST;
+ s->opt[OPT_CONTRAST].type = SANE_TYPE_INT;
+ s->opt[OPT_CONTRAST].unit = SANE_UNIT_NONE;
+ s->opt[OPT_CONTRAST].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_CONTRAST].constraint.range = &(enhance_range);
+ s->opt[OPT_CONTRAST].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT;
+ /* disable by default */
+ s->val[OPT_CONTRAST].w = 0;
+
+ /* "Extras" group: */
+ s->opt[OPT_EXTRAS_GROUP].title = SANE_I18N ("Extras");
+ s->opt[OPT_EXTRAS_GROUP].desc = "";
+ s->opt[OPT_EXTRAS_GROUP].type = SANE_TYPE_GROUP;
+ s->opt[OPT_EXTRAS_GROUP].cap = SANE_CAP_ADVANCED;
+ s->opt[OPT_EXTRAS_GROUP].size = 0;
+ s->opt[OPT_EXTRAS_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+ /* BW threshold */
+ s->opt[OPT_THRESHOLD].name = SANE_NAME_THRESHOLD;
+ s->opt[OPT_THRESHOLD].title = SANE_TITLE_THRESHOLD;
+ s->opt[OPT_THRESHOLD].desc = SANE_DESC_THRESHOLD;
+ s->opt[OPT_THRESHOLD].type = SANE_TYPE_FIXED;
+ s->opt[OPT_THRESHOLD].unit = SANE_UNIT_PERCENT;
+ s->opt[OPT_THRESHOLD].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_THRESHOLD].constraint.range = &percentage_range;
+ s->val[OPT_THRESHOLD].w = SANE_FIX (50);
+
+ /* BW threshold curve */
+ s->opt[OPT_THRESHOLD_CURVE].name = "threshold-curve";
+ s->opt[OPT_THRESHOLD_CURVE].title = SANE_I18N ("Threshold curve");
+ s->opt[OPT_THRESHOLD_CURVE].desc = SANE_I18N ("Dynamic threshold curve, from light to dark, normally 50-65");
+ s->opt[OPT_THRESHOLD_CURVE].type = SANE_TYPE_INT;
+ s->opt[OPT_THRESHOLD_CURVE].unit = SANE_UNIT_NONE;
+ s->opt[OPT_THRESHOLD_CURVE].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_THRESHOLD_CURVE].constraint.range = &threshold_curve_range;
+ s->val[OPT_THRESHOLD_CURVE].w = 50;
+
+ /* dynamic linart */
+ s->opt[OPT_DISABLE_DYNAMIC_LINEART].name = "disable-dynamic-lineart";
+ s->opt[OPT_DISABLE_DYNAMIC_LINEART].title = SANE_I18N ("Disable dynamic lineart");
+ s->opt[OPT_DISABLE_DYNAMIC_LINEART].desc =
+ SANE_I18N ("Disable use of a software adaptive algorithm to generate lineart relying instead on hardware lineart.");
+ s->opt[OPT_DISABLE_DYNAMIC_LINEART].type = SANE_TYPE_BOOL;
+ s->opt[OPT_DISABLE_DYNAMIC_LINEART].unit = SANE_UNIT_NONE;
+ s->opt[OPT_DISABLE_DYNAMIC_LINEART].constraint_type = SANE_CONSTRAINT_NONE;
+ s->val[OPT_DISABLE_DYNAMIC_LINEART].w = SANE_FALSE;
+
+ /* fastmod is required for hw lineart to work */
+ if ((s->dev->model->asic_type == GENESYS_GL646)
+ &&(s->dev->model->motor_type != MOTOR_XP200))
+ {
+ s->opt[OPT_DISABLE_DYNAMIC_LINEART].cap = SANE_CAP_INACTIVE;
+ }
+
+ /* disable_interpolation */
+ s->opt[OPT_DISABLE_INTERPOLATION].name = "disable-interpolation";
+ s->opt[OPT_DISABLE_INTERPOLATION].title =
+ SANE_I18N ("Disable interpolation");
+ s->opt[OPT_DISABLE_INTERPOLATION].desc =
+ SANE_I18N
+ ("When using high resolutions where the horizontal resolution is smaller "
+ "than the vertical resolution this disables horizontal interpolation.");
+ s->opt[OPT_DISABLE_INTERPOLATION].type = SANE_TYPE_BOOL;
+ s->opt[OPT_DISABLE_INTERPOLATION].unit = SANE_UNIT_NONE;
+ s->opt[OPT_DISABLE_INTERPOLATION].constraint_type = SANE_CONSTRAINT_NONE;
+ s->val[OPT_DISABLE_INTERPOLATION].w = SANE_FALSE;
+
+ /* color filter */
+ s->opt[OPT_COLOR_FILTER].name = "color-filter";
+ s->opt[OPT_COLOR_FILTER].title = SANE_I18N ("Color filter");
+ s->opt[OPT_COLOR_FILTER].desc =
+ SANE_I18N
+ ("When using gray or lineart this option selects the used color.");
+ s->opt[OPT_COLOR_FILTER].type = SANE_TYPE_STRING;
+ s->opt[OPT_COLOR_FILTER].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+ /* true gray not yet supported for GL847 and GL124 scanners */
+ if(!model->is_cis || model->asic_type==GENESYS_GL847 || model->asic_type==GENESYS_GL124)
+ {
+ s->opt[OPT_COLOR_FILTER].size = max_string_size (color_filter_list);
+ s->opt[OPT_COLOR_FILTER].constraint.string_list = color_filter_list;
+ s->val[OPT_COLOR_FILTER].s = strdup (s->opt[OPT_COLOR_FILTER].constraint.string_list[1]);
+ }
+ else
+ {
+ s->opt[OPT_COLOR_FILTER].size = max_string_size (cis_color_filter_list);
+ s->opt[OPT_COLOR_FILTER].constraint.string_list = cis_color_filter_list;
+ /* default to "None" ie true gray */
+ s->val[OPT_COLOR_FILTER].s = strdup (s->opt[OPT_COLOR_FILTER].constraint.string_list[3]);
+ }
+
+ /* no support for color filter for cis+gl646 scanners */
+ if (model->asic_type == GENESYS_GL646 && model->is_cis)
+ {
+ DISABLE (OPT_COLOR_FILTER);
+ }
+
+ /* calibration stor file name */
+ s->opt[OPT_CALIBRATION_FILE].name = "calibration-file";
+ s->opt[OPT_CALIBRATION_FILE].title = SANE_I18N ("Calibration file");
+ s->opt[OPT_CALIBRATION_FILE].desc = SANE_I18N ("Specify the calibration file to use");
+ s->opt[OPT_CALIBRATION_FILE].type = SANE_TYPE_STRING;
+ s->opt[OPT_CALIBRATION_FILE].unit = SANE_UNIT_NONE;
+ s->opt[OPT_CALIBRATION_FILE].size = PATH_MAX;
+ s->opt[OPT_CALIBRATION_FILE].cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT | SANE_CAP_ADVANCED;
+ s->opt[OPT_CALIBRATION_FILE].constraint_type = SANE_CONSTRAINT_NONE;
+ s->val[OPT_CALIBRATION_FILE].s = NULL;
+ /* disable option if ran as root */
+#ifdef HAVE_GETUID
+ if(geteuid()==0)
+ {
+ DISABLE (OPT_CALIBRATION_FILE);
+ }
+#endif
+
+ /* Powersave time (turn lamp off) */
+ s->opt[OPT_LAMP_OFF_TIME].name = "lamp-off-time";
+ s->opt[OPT_LAMP_OFF_TIME].title = SANE_I18N ("Lamp off time");
+ s->opt[OPT_LAMP_OFF_TIME].desc =
+ SANE_I18N
+ ("The lamp will be turned off after the given time (in minutes). "
+ "A value of 0 means, that the lamp won't be turned off.");
+ s->opt[OPT_LAMP_OFF_TIME].type = SANE_TYPE_INT;
+ s->opt[OPT_LAMP_OFF_TIME].unit = SANE_UNIT_NONE;
+ s->opt[OPT_LAMP_OFF_TIME].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_LAMP_OFF_TIME].constraint.range = &time_range;
+ s->val[OPT_LAMP_OFF_TIME].w = 15; /* 15 minutes */
+
+ /* turn lamp off during scan */
+ s->opt[OPT_LAMP_OFF].name = "lamp-off-scan";
+ s->opt[OPT_LAMP_OFF].title = SANE_I18N ("Lamp off during scan");
+ s->opt[OPT_LAMP_OFF].desc = SANE_I18N ("The lamp will be turned off during scan. ");
+ s->opt[OPT_LAMP_OFF].type = SANE_TYPE_BOOL;
+ s->opt[OPT_LAMP_OFF].unit = SANE_UNIT_NONE;
+ s->opt[OPT_LAMP_OFF].constraint_type = SANE_CONSTRAINT_NONE;
+ s->val[OPT_LAMP_OFF].w = SANE_FALSE;
+
+ s->opt[OPT_SENSOR_GROUP].title = SANE_TITLE_SENSORS;
+ s->opt[OPT_SENSOR_GROUP].desc = SANE_DESC_SENSORS;
+ s->opt[OPT_SENSOR_GROUP].type = SANE_TYPE_GROUP;
+ s->opt[OPT_SENSOR_GROUP].cap = SANE_CAP_ADVANCED;
+ s->opt[OPT_SENSOR_GROUP].size = 0;
+ s->opt[OPT_SENSOR_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+ s->opt[OPT_SCAN_SW].name = SANE_NAME_SCAN;
+ s->opt[OPT_SCAN_SW].title = SANE_TITLE_SCAN;
+ s->opt[OPT_SCAN_SW].desc = SANE_DESC_SCAN;
+ s->opt[OPT_SCAN_SW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_SCAN_SW].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_SCAN_SW)
+ s->opt[OPT_SCAN_SW].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_HARD_SELECT | SANE_CAP_ADVANCED;
+ else
+ s->opt[OPT_SCAN_SW].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_SCAN_SW].b = 0;
+ s->last_val[OPT_SCAN_SW].b = 0;
+
+ /* SANE_NAME_FILE is not for buttons */
+ s->opt[OPT_FILE_SW].name = "file";
+ s->opt[OPT_FILE_SW].title = SANE_I18N ("File button");
+ s->opt[OPT_FILE_SW].desc = SANE_I18N ("File button");
+ s->opt[OPT_FILE_SW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_FILE_SW].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_FILE_SW)
+ s->opt[OPT_FILE_SW].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_HARD_SELECT | SANE_CAP_ADVANCED;
+ else
+ s->opt[OPT_FILE_SW].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_FILE_SW].b = 0;
+ s->last_val[OPT_FILE_SW].b = 0;
+
+ s->opt[OPT_EMAIL_SW].name = SANE_NAME_EMAIL;
+ s->opt[OPT_EMAIL_SW].title = SANE_TITLE_EMAIL;
+ s->opt[OPT_EMAIL_SW].desc = SANE_DESC_EMAIL;
+ s->opt[OPT_EMAIL_SW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_EMAIL_SW].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_EMAIL_SW)
+ s->opt[OPT_EMAIL_SW].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_HARD_SELECT | SANE_CAP_ADVANCED;
+ else
+ s->opt[OPT_EMAIL_SW].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_EMAIL_SW].b = 0;
+ s->last_val[OPT_EMAIL_SW].b = 0;
+
+ s->opt[OPT_COPY_SW].name = SANE_NAME_COPY;
+ s->opt[OPT_COPY_SW].title = SANE_TITLE_COPY;
+ s->opt[OPT_COPY_SW].desc = SANE_DESC_COPY;
+ s->opt[OPT_COPY_SW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_COPY_SW].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_COPY_SW)
+ s->opt[OPT_COPY_SW].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_HARD_SELECT | SANE_CAP_ADVANCED;
+ else
+ s->opt[OPT_COPY_SW].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_COPY_SW].b = 0;
+ s->last_val[OPT_COPY_SW].b = 0;
+
+ s->opt[OPT_PAGE_LOADED_SW].name = SANE_NAME_PAGE_LOADED;
+ s->opt[OPT_PAGE_LOADED_SW].title = SANE_TITLE_PAGE_LOADED;
+ s->opt[OPT_PAGE_LOADED_SW].desc = SANE_DESC_PAGE_LOADED;
+ s->opt[OPT_PAGE_LOADED_SW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_PAGE_LOADED_SW].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_PAGE_LOADED_SW)
+ s->opt[OPT_PAGE_LOADED_SW].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_HARD_SELECT | SANE_CAP_ADVANCED;
+ else
+ s->opt[OPT_PAGE_LOADED_SW].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_PAGE_LOADED_SW].b = 0;
+ s->last_val[OPT_PAGE_LOADED_SW].b = 0;
+
+ /* OCR button */
+ s->opt[OPT_OCR_SW].name = "ocr";
+ s->opt[OPT_OCR_SW].title = SANE_I18N ("OCR button");
+ s->opt[OPT_OCR_SW].desc = SANE_I18N ("OCR button");
+ s->opt[OPT_OCR_SW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_OCR_SW].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_OCR_SW)
+ s->opt[OPT_OCR_SW].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_HARD_SELECT | SANE_CAP_ADVANCED;
+ else
+ s->opt[OPT_OCR_SW].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_OCR_SW].b = 0;
+ s->last_val[OPT_OCR_SW].b = 0;
+
+ /* power button */
+ s->opt[OPT_POWER_SW].name = "power";
+ s->opt[OPT_POWER_SW].title = SANE_I18N ("Power button");
+ s->opt[OPT_POWER_SW].desc = SANE_I18N ("Power button");
+ s->opt[OPT_POWER_SW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_POWER_SW].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_POWER_SW)
+ s->opt[OPT_POWER_SW].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_HARD_SELECT | SANE_CAP_ADVANCED;
+ else
+ s->opt[OPT_POWER_SW].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_POWER_SW].b = 0;
+ s->last_val[OPT_POWER_SW].b = 0;
+
+ /* extra button */
+ s->opt[OPT_EXTRA_SW].name = "extra";
+ s->opt[OPT_EXTRA_SW].title = SANE_I18N ("Extra button");
+ s->opt[OPT_EXTRA_SW].desc = SANE_I18N ("Extra button");
+ s->opt[OPT_EXTRA_SW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_EXTRA_SW].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_EXTRA_SW)
+ s->opt[OPT_EXTRA_SW].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_HARD_SELECT | SANE_CAP_ADVANCED;
+ else
+ s->opt[OPT_EXTRA_SW].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_EXTRA_SW].b = 0;
+ s->last_val[OPT_EXTRA_SW].b = 0;
+
+ /* calibration needed */
+ s->opt[OPT_NEED_CALIBRATION_SW].name = "need-calibration";
+ s->opt[OPT_NEED_CALIBRATION_SW].title = SANE_I18N ("Need calibration");
+ s->opt[OPT_NEED_CALIBRATION_SW].desc = SANE_I18N ("The scanner needs calibration for the current settings");
+ s->opt[OPT_NEED_CALIBRATION_SW].type = SANE_TYPE_BOOL;
+ s->opt[OPT_NEED_CALIBRATION_SW].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_CALIBRATE)
+ s->opt[OPT_NEED_CALIBRATION_SW].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_HARD_SELECT | SANE_CAP_ADVANCED;
+ else
+ s->opt[OPT_NEED_CALIBRATION_SW].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_NEED_CALIBRATION_SW].b = 0;
+ s->last_val[OPT_NEED_CALIBRATION_SW].b = 0;
+
+ /* button group */
+ s->opt[OPT_BUTTON_GROUP].title = SANE_I18N ("Buttons");
+ s->opt[OPT_BUTTON_GROUP].desc = "";
+ s->opt[OPT_BUTTON_GROUP].type = SANE_TYPE_GROUP;
+ s->opt[OPT_BUTTON_GROUP].cap = SANE_CAP_ADVANCED;
+ s->opt[OPT_BUTTON_GROUP].size = 0;
+ s->opt[OPT_BUTTON_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+ /* calibrate button */
+ s->opt[OPT_CALIBRATE].name = "calibrate";
+ s->opt[OPT_CALIBRATE].title = SANE_I18N ("Calibrate");
+ s->opt[OPT_CALIBRATE].desc =
+ SANE_I18N ("Start calibration using special sheet");
+ s->opt[OPT_CALIBRATE].type = SANE_TYPE_BUTTON;
+ s->opt[OPT_CALIBRATE].unit = SANE_UNIT_NONE;
+ if (model->buttons & GENESYS_HAS_CALIBRATE)
+ s->opt[OPT_CALIBRATE].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT | SANE_CAP_ADVANCED |
+ SANE_CAP_AUTOMATIC;
+ else
+ s->opt[OPT_CALIBRATE].cap = SANE_CAP_INACTIVE;
+ s->val[OPT_CALIBRATE].b = 0;
+ s->last_val[OPT_CALIBRATE].b = 0;
+
+ /* clear calibration cache button */
+ s->opt[OPT_CLEAR_CALIBRATION].name = "clear-calibration";
+ s->opt[OPT_CLEAR_CALIBRATION].title = SANE_I18N ("Clear calibration");
+ s->opt[OPT_CLEAR_CALIBRATION].desc = SANE_I18N ("Clear calibration cache");
+ s->opt[OPT_CLEAR_CALIBRATION].type = SANE_TYPE_BUTTON;
+ s->opt[OPT_CLEAR_CALIBRATION].unit = SANE_UNIT_NONE;
+ s->opt[OPT_CLEAR_CALIBRATION].size = 0;
+ s->opt[OPT_CLEAR_CALIBRATION].constraint_type = SANE_CONSTRAINT_NONE;
+ s->opt[OPT_CLEAR_CALIBRATION].cap =
+ SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT | SANE_CAP_ADVANCED;
+ s->val[OPT_CLEAR_CALIBRATION].b = 0;
+ s->last_val[OPT_CLEAR_CALIBRATION].b = 0;
+
+ RIE (calc_parameters (s));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Bool present;
+static SANE_Status
+check_present (SANE_String_Const devname)
+{
+ present=SANE_TRUE;
+ DBG (DBG_io, "check_present: %s detected.\n",devname);
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+attach (SANE_String_Const devname, Genesys_Device ** devp, SANE_Bool may_wait)
+{
+ Genesys_Device *dev = 0;
+ SANE_Int dn, vendor, product;
+ SANE_Status status;
+ int i;
+
+
+ DBG (DBG_proc, "attach: start: devp %s NULL, may_wait = %d\n",
+ devp ? "!=" : "==", may_wait);
+
+ if (devp)
+ *devp = 0;
+
+ if (!devname)
+ {
+ DBG (DBG_error, "attach: devname == NULL\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ for (dev = first_dev; dev; dev = dev->next)
+ {
+ if (strcmp (dev->file_name, devname) == 0)
+ {
+ if (devp)
+ *devp = dev;
+ DBG (DBG_info, "attach: device `%s' was already in device list\n",
+ devname);
+ return SANE_STATUS_GOOD;
+ }
+ }
+
+ DBG (DBG_info, "attach: trying to open device `%s'\n", devname);
+
+ status = sanei_usb_open (devname, &dn);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_warn, "attach: couldn't open device `%s': %s\n", devname,
+ sane_strstatus (status));
+ return status;
+ }
+ else
+ DBG (DBG_info, "attach: device `%s' successfully opened\n", devname);
+
+ status = sanei_usb_get_vendor_product (dn, &vendor, &product);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "attach: couldn't get vendor and product ids of device `%s': %s\n",
+ devname, sane_strstatus (status));
+ return status;
+ }
+
+ /* KV-SS080 is an auxiliary device which requires a master device to be here */
+ if(vendor == 0x04da && product == 0x100f)
+ {
+ present=SANE_FALSE;
+ sanei_usb_find_devices (vendor, 0x1006, check_present);
+ sanei_usb_find_devices (vendor, 0x1007, check_present);
+ sanei_usb_find_devices (vendor, 0x1010, check_present);
+ if(present==SANE_FALSE)
+ {
+ DBG (DBG_error,"attach: master device not present\n");
+ return SANE_STATUS_INVAL;
+ }
+ }
+
+ for (i = 0; i < MAX_SCANNERS && genesys_usb_device_list[i].model != 0; i++)
+ {
+ if (vendor == genesys_usb_device_list[i].vendor &&
+ product == genesys_usb_device_list[i].product)
+ {
+ dev = malloc (sizeof (*dev));
+ if (!dev)
+ return SANE_STATUS_NO_MEM;
+ break;
+ }
+ }
+
+ if (!dev)
+ {
+ DBG (DBG_error,
+ "attach: vendor %d product %d is not supported by this backend\n",
+ vendor, product);
+ return SANE_STATUS_INVAL;
+ }
+
+ dev->file_name = strdup (devname);
+ if (!dev->file_name)
+ return SANE_STATUS_NO_MEM;
+
+ dev->model = genesys_usb_device_list[i].model;
+ dev->vendorId = genesys_usb_device_list[i].vendor;
+ dev->productId = genesys_usb_device_list[i].product;
+ dev->already_initialized = SANE_FALSE;
+
+ DBG (DBG_info, "attach: found %s flatbed scanner %s at %s\n",
+ dev->model->vendor, dev->model->model, dev->file_name);
+ ++num_devices;
+ dev->next = first_dev;
+ first_dev = dev;
+
+ if (devp)
+ *devp = dev;
+ sanei_usb_close (dn);
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+attach_one_device (SANE_String_Const devname)
+{
+ Genesys_Device *dev;
+ SANE_Status status;
+ Genesys_Device **tmp_dev;
+
+ RIE (attach (devname, &dev, SANE_FALSE));
+
+ if (dev)
+ {
+ /* Keep track of newly attached devices so we can set options as
+ necessary. */
+ tmp_dev=NULL;
+ /* increase device list capacity if needed */
+ if (new_dev_len >= new_dev_alloced)
+ {
+ new_dev_alloced += 4;
+ if (new_dev)
+ {
+ tmp_dev = new_dev;
+ new_dev = realloc (new_dev, new_dev_alloced * sizeof (new_dev[0]));
+ }
+ else
+ {
+ new_dev = malloc (new_dev_alloced * sizeof (new_dev[0]));
+ tmp_dev = NULL;
+ }
+ if (!new_dev)
+ {
+ FREE_IFNOT_NULL(tmp_dev)
+ DBG (DBG_error, "attach_one_device: out of memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+ }
+ new_dev[new_dev_len++] = dev;
+ }
+ return SANE_STATUS_GOOD;
+}
+
+/* configuration framework functions */
+static SANE_Status
+config_attach_genesys (SANEI_Config __sane_unused__ *config, const char *devname)
+{
+ /* the devname has been processed and is ready to be used
+ * directly. Since the backend is an USB only one, we can
+ * call sanei_usb_attach_matching_devices straight */
+ sanei_usb_attach_matching_devices (devname, attach_one_device);
+
+ return SANE_STATUS_GOOD;
+}
+
+/* probes for scanner to attach to the backend */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+probe_genesys_devices (void)
+{
+ SANEI_Config config;
+ SANE_Status status;
+
+ DBGSTART;
+
+ new_dev = 0;
+ new_dev_len = 0;
+ new_dev_alloced = 0;
+
+ /* set configuration options structure : no option for this backend */
+ config.descriptors = NULL;
+ config.values = NULL;
+ config.count = 0;
+
+ /* generic configure and attach function */
+ status = sanei_configure_attach (GENESYS_CONFIG_FILE, &config,
+ config_attach_genesys);
+
+ if (new_dev_alloced > 0)
+ {
+ new_dev_len = new_dev_alloced = 0;
+ free (new_dev);
+ }
+
+ DBGCOMPLETED;
+
+ return status;
+}
+
+/**
+ * This should be changed if one of the substructures of
+ Genesys_Calibration_Cache change, but it must be changed if there are
+ changes that don't change size -- at least for now, as we store most
+ of Genesys_Calibration_Cache as is.
+*/
+#define CALIBRATION_VERSION 1
+
+/**
+ * reads previously cached calibration data
+ * from file define in dev->calib_file
+ */
+SANE_Status
+sanei_genesys_read_calibration (Genesys_Device * dev)
+{
+ FILE *fp;
+ uint8_t vers = 0;
+ uint32_t size = 0;
+ struct Genesys_Calibration_Cache *cache;
+ SANE_Status status=SANE_STATUS_GOOD;
+
+ DBGSTART;
+
+ /* open calibration cache file */
+ fp = fopen (dev->calib_file, "rb");
+ if (!fp)
+ {
+ DBG (DBG_info, "Calibration: Cannot open %s\n", dev->calib_file);
+ DBGCOMPLETED;
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ /* these two checks ensure that most bad things cannot happen */
+ fread (&vers, 1, 1, fp);
+ if (vers != CALIBRATION_VERSION)
+ {
+ DBG (DBG_info, "Calibration: Bad version\n");
+ fclose (fp);
+ DBGCOMPLETED;
+ return SANE_STATUS_INVAL;
+ }
+ fread (&size, 4, 1, fp);
+ if (size != sizeof (struct Genesys_Calibration_Cache))
+ {
+ DBG (DBG_info,
+ "Calibration: Size of calibration cache struct differs\n");
+ fclose (fp);
+ DBGCOMPLETED;
+ return SANE_STATUS_INVAL;
+ }
+
+ /* clear device calibration cache */
+ while(dev->calibration_cache!=NULL)
+ {
+ cache=dev->calibration_cache;
+ dev->calibration_cache=dev->calibration_cache->next;
+ free(cache);
+ }
+
+ /* loop on cache records in file */
+ while (!feof (fp) && status==SANE_STATUS_GOOD)
+ {
+ DBG (DBG_info, "sanei_genesys_read_calibration: reading one record\n");
+ cache = (struct Genesys_Calibration_Cache *) malloc (sizeof (*cache));
+
+ if (!cache)
+ {
+ DBG (DBG_error,
+ "sanei_genesys_read_calibration: could not allocate cache struct\n");
+ break;
+ }
+
+#define BILT1( x ) \
+ do \
+ { \
+ if ((x) < 1) \
+ { \
+ free(cache); \
+ DBG (DBG_warn, "sanei_genesys_read_calibration: partial calibration record\n"); \
+ status=SANE_STATUS_EOF; \
+ break; \
+ } \
+ } while(0)
+
+
+ if (fread (&cache->used_setup, sizeof (cache->used_setup), 1, fp) < 1)
+ { /* eof is only detected here */
+ free (cache);
+ status=SANE_STATUS_GOOD;
+ break;
+ }
+ BILT1 (fread (&cache->last_calibration, sizeof (cache->last_calibration), 1, fp));
+ BILT1 (fread (&cache->frontend, sizeof (cache->frontend), 1, fp));
+ /* the gamma (and later) fields are not stored */
+ BILT1 (fread (&cache->sensor, offsetof (Genesys_Sensor, gamma[0]), 1, fp));
+ BILT1 (fread (&cache->calib_pixels, sizeof (cache->calib_pixels), 1, fp));
+ BILT1 (fread (&cache->calib_channels, sizeof (cache->calib_channels), 1, fp));
+ BILT1 (fread (&cache->average_size, sizeof (cache->average_size), 1, fp));
+
+ cache->white_average_data = (uint8_t *) malloc (cache->average_size);
+ cache->dark_average_data = (uint8_t *) malloc (cache->average_size);
+
+ if (!cache->white_average_data || !cache->dark_average_data)
+ {
+ status=SANE_STATUS_NO_MEM;
+ FREE_IFNOT_NULL (cache->white_average_data);
+ FREE_IFNOT_NULL (cache->dark_average_data);
+ free (cache);
+ DBG (DBG_error,
+ "sanei_genesys_read_calibration: could not allocate space for average data\n");
+ break;
+ }
+
+ if (fread (cache->white_average_data, cache->average_size, 1, fp) < 1)
+ {
+ status=SANE_STATUS_EOF;
+ DBG (DBG_warn, "sanei_genesys_read_calibration: partial calibration record\n");
+ free (cache->white_average_data);
+ free (cache->dark_average_data);
+ free (cache);
+ break;
+ }
+ if (fread (cache->dark_average_data, cache->average_size, 1, fp) < 1)
+ {
+ DBG (DBG_warn, "sanei_genesys_read_calibration: partial calibration record\n");
+ free (cache->white_average_data);
+ free (cache->dark_average_data);
+ free (cache);
+ status=SANE_STATUS_EOF;
+ break;
+ }
+#undef BILT1
+ DBG (DBG_info, "sanei_genesys_read_calibration: adding record to list\n");
+ cache->next = dev->calibration_cache;
+ dev->calibration_cache = cache;
+ }
+
+ fclose (fp);
+ DBGCOMPLETED;
+ return status;
+}
+
+static void
+write_calibration (Genesys_Device * dev)
+{
+ FILE *fp;
+ uint8_t vers = 0;
+ uint32_t size = 0;
+ struct Genesys_Calibration_Cache *cache;
+
+ DBGSTART;
+ fp = fopen (dev->calib_file, "wb");
+ if (!fp)
+ {
+ DBG (DBG_info, "write_calibration: Cannot open %s for writing\n", dev->calib_file);
+ return;
+ }
+
+ vers = CALIBRATION_VERSION;
+ fwrite (&vers, 1, 1, fp);
+ size = sizeof (struct Genesys_Calibration_Cache);
+ fwrite (&size, 4, 1, fp);
+
+ for (cache = dev->calibration_cache; cache; cache = cache->next)
+ {
+ fwrite (&cache->used_setup, sizeof (cache->used_setup), 1, fp);
+ fwrite (&cache->last_calibration, sizeof (cache->last_calibration), 1, fp);
+ fwrite (&cache->frontend, sizeof (cache->frontend), 1, fp);
+ /* the gamma (and later) fields are not stored */
+ fwrite (&cache->sensor, offsetof (Genesys_Sensor, gamma[0]), 1, fp);
+
+ fwrite (&cache->calib_pixels, sizeof (cache->calib_pixels), 1, fp);
+ fwrite (&cache->calib_channels, sizeof (cache->calib_channels), 1, fp);
+ fwrite (&cache->average_size, sizeof (cache->average_size), 1, fp);
+ fwrite (cache->white_average_data, cache->average_size, 1, fp);
+ fwrite (cache->dark_average_data, cache->average_size, 1, fp);
+ }
+ DBGCOMPLETED;
+ fclose (fp);
+}
+
+/** @brief buffer scanned picture
+ * In order to allow digital processing, we must be able to put all the
+ * scanned picture in a buffer.
+ */
+static SANE_Status
+genesys_buffer_image(Genesys_Scanner *s)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ size_t maximum; /**> maximum bytes size of the scan */
+ size_t len; /**> length of scanned data read */
+ size_t total; /**> total of butes read */
+ size_t size; /**> size of image buffer */
+ size_t read_size; /**> size of reads */
+ int lines; /** number of lines of the scan */
+ Genesys_Device *dev = s->dev;
+ SANE_Byte *lineart=NULL;
+
+ /* compute maximum number of lines for the scan */
+ if (s->params.lines > 0)
+ {
+ lines = s->params.lines;
+ }
+ else
+ {
+ lines =
+ (SANE_UNFIX (dev->model->y_size) * dev->settings.yres) / MM_PER_INCH;
+ }
+ DBG (DBG_info, "%s: buffering %d lines of %d bytes\n", __FUNCTION__, lines,
+ s->params.bytes_per_line);
+
+ /* maximum bytes to read */
+ maximum = s->params.bytes_per_line * lines;
+ if(s->dev->settings.dynamic_lineart==SANE_TRUE)
+ {
+ maximum *= 8;
+ }
+
+ /* initial size of the read buffer */
+ size =
+ ((2048 * 2048) / s->params.bytes_per_line) * s->params.bytes_per_line;
+
+ /* read size */
+ read_size = size / 2;
+
+ /* allocate memory */
+ dev->img_buffer = (SANE_Byte *) malloc (size);
+ if (dev->img_buffer == NULL)
+ {
+ DBG (DBG_error,
+ "%s: digital processing requires too much memory.\nConsider disabling it\n",
+ __FUNCTION__);
+ return SANE_STATUS_NO_MEM;
+ }
+
+ /* loop reading data until we reach maximum or EOF */
+ total = 0;
+ while (total < maximum && status != SANE_STATUS_EOF)
+ {
+ len = size - maximum;
+ if (len > read_size)
+ {
+ len = read_size;
+ }
+ status = genesys_read_ordered_data (dev, dev->img_buffer + total, &len);
+ if (status != SANE_STATUS_EOF && status != SANE_STATUS_GOOD)
+ {
+ free (s->dev->img_buffer);
+ DBG (DBG_error, "%s: %s buffering failed\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+ total += len;
+
+ /* do we need to enlarge read buffer ? */
+ if (total + read_size > size && status != SANE_STATUS_EOF)
+ {
+ size += read_size;
+ dev->img_buffer = (SANE_Byte *) realloc (dev->img_buffer, size);
+ if (dev->img_buffer == NULL)
+ {
+ DBG (DBG_error0,
+ "%s: digital processing requires too much memory.\nConsider disabling it\n",
+ __FUNCTION__);
+ return SANE_STATUS_NO_MEM;
+ }
+ }
+ }
+
+ /* since digital processing is going to take place,
+ * issue head parking command so that the head move while
+ * computing so we can save time
+ */
+ if (dev->model->is_sheetfed == SANE_FALSE &&
+ dev->parking == SANE_FALSE)
+ {
+ dev->model->cmd_set->slow_back_home (dev, dev->model->flags & GENESYS_FLAG_MUST_WAIT);
+ dev->parking = !(s->dev->model->flags & GENESYS_FLAG_MUST_WAIT);
+ }
+
+ /* in case of dynamic lineart, we have buffered gray data which
+ * must be converted to lineart first */
+ if(s->dev->settings.dynamic_lineart==SANE_TRUE)
+ {
+ total/=8;
+ lineart=(SANE_Byte *)malloc(total);
+ if (lineart == NULL)
+ {
+ DBG (DBG_error0,
+ "%s: digital processing requires too much memory.\nConsider disabling it\n",
+ __FUNCTION__);
+ return SANE_STATUS_NO_MEM;
+ }
+ genesys_gray_lineart (dev,
+ dev->img_buffer,
+ lineart,
+ dev->settings.pixels,
+ (total*8)/dev->settings.pixels,
+ dev->settings.threshold);
+ free(dev->img_buffer);
+ dev->img_buffer = lineart;
+ }
+
+ /* update counters */
+ dev->total_bytes_to_read = total;
+ dev->total_bytes_read = 0;
+
+ /* update params */
+ s->params.lines = total / s->params.bytes_per_line;
+ if (DBG_LEVEL >= DBG_io2)
+ {
+ sanei_genesys_write_pnm_file ("unprocessed.pnm",
+ dev->img_buffer,
+ s->params.depth,
+ s->params.format==SANE_FRAME_RGB ? 3:1,
+ s->params.pixels_per_line,
+ s->params.lines);
+ }
+
+ return SANE_STATUS_GOOD;
+}
+
+/* -------------------------- SANE API functions ------------------------- */
+
+SANE_Status
+sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize)
+{
+ SANE_Status status;
+
+ DBG_INIT ();
+ DBG (DBG_init, "SANE Genesys backend version %d.%d build %d from %s\n",
+ SANE_CURRENT_MAJOR, V_MINOR, BUILD, PACKAGE_STRING);
+#ifdef HAVE_LIBUSB_1_0
+ DBG (DBG_init, "SANE Genesys backend built with libusb-1.0\n");
+#endif
+#ifdef HAVE_LIBUSB
+ DBG (DBG_init, "SANE Genesys backend built with libusb\n");
+#endif
+
+ if (version_code)
+ *version_code = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, V_MINOR, BUILD);
+
+ DBG (DBG_proc, "sane_init: authorize %s null\n", authorize ? "!=" : "==");
+
+ /* init usb use */
+ sanei_usb_init ();
+
+ /* init sanei_magic */
+ sanei_magic_init();
+
+ DBG (DBG_info, "sane_init: %s endian machine\n",
+#ifdef WORDS_BIGENDIAN
+ "big"
+#else
+ "little"
+#endif
+ );
+
+ /* set up to no devices at first */
+ num_devices = 0;
+ first_dev = 0;
+ first_handle = 0;
+ devlist = 0;
+
+ /* cold-plug case :detection of allready connected scanners */
+ status = probe_genesys_devices ();
+
+ DBGCOMPLETED;
+
+ return status;
+}
+
+void
+sane_exit (void)
+{
+ Genesys_Device *dev, *next;
+
+ DBGSTART;
+ for (dev = first_dev; dev; dev = next)
+ {
+ /* sane_close() free many fields, not much things left to
+ * do here */
+ next = dev->next;
+ free (dev->file_name);
+ free (dev);
+ }
+ first_dev = 0;
+ first_handle = 0;
+ if (devlist)
+ free (devlist);
+ devlist = 0;
+
+ sanei_usb_exit();
+
+ DBGCOMPLETED;
+}
+
+SANE_Status
+sane_get_devices (const SANE_Device *** device_list, SANE_Bool local_only)
+{
+ Genesys_Device *dev, *prev;
+ SANE_Int index;
+ SANE_Device *sane_device;
+
+ DBG (DBG_proc, "sane_get_devices: start: local_only = %s\n",
+ local_only == SANE_TRUE ? "true" : "false");
+
+ /* hot-plug case : detection of newly connected scanners */
+ sanei_usb_scan_devices ();
+ probe_genesys_devices ();
+
+ if (devlist)
+ free (devlist);
+
+ devlist = malloc ((num_devices + 1) * sizeof (devlist[0]));
+ if (!devlist)
+ return SANE_STATUS_NO_MEM;
+
+ prev = NULL;
+ index = 0;
+ dev = first_dev;
+ while (dev != NULL)
+ {
+ /* check if device removed */
+ present = SANE_FALSE;
+ sanei_usb_find_devices (dev->vendorId, dev->productId, check_present);
+ if (present)
+ {
+ sane_device = malloc (sizeof (*sane_device));
+ if (!sane_device)
+ return SANE_STATUS_NO_MEM;
+ sane_device->name = dev->file_name;
+ sane_device->vendor = dev->model->vendor;
+ sane_device->model = dev->model->model;
+ sane_device->type = strdup ("flatbed scanner");
+ devlist[index] = sane_device;
+ index++;
+ prev = dev;
+ dev = dev->next;
+ }
+ else
+ {
+ /* remove device from internal list */
+ /* case 1 : removed device is first_dev */
+ if (prev == NULL)
+ {
+ /* test for another dev */
+ if (dev->next == NULL)
+ {
+ /* empty the whole list */
+ free (dev);
+ first_dev = NULL;
+ num_devices = 0;
+ dev = NULL;
+ }
+ else
+ {
+ /* assign new start */
+ first_dev = dev->next;
+ num_devices--;
+ free (dev);
+ dev = prev->next;
+ }
+ }
+ /* case 2 : removed device is not first_dev */
+ else
+ {
+ /* link previous dev to next dev */
+ prev->next = dev->next;
+ free (dev);
+ num_devices--;
+
+ /* next loop */
+ dev = prev->next;
+ }
+ }
+ }
+ devlist[index] = 0;
+
+ *device_list = devlist;
+
+ DBGCOMPLETED;
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_open (SANE_String_Const devicename, SANE_Handle * handle)
+{
+ Genesys_Device *dev;
+ SANE_Status status;
+ Genesys_Scanner *s;
+ char tmp_str[PATH_MAX];
+ char *ptr;
+
+ DBG (DBG_proc, "sane_open: start (devicename = `%s')\n", devicename);
+
+ /* devicename="" or devicename="genesys" are default values that use
+ * first available device
+ */
+ if (devicename[0] && strcmp ("genesys", devicename) != 0)
+ {
+ /* search for the given devicename in the device list */
+ for (dev = first_dev; dev; dev = dev->next)
+ if (strcmp (dev->file_name, devicename) == 0)
+ break;
+
+ if (!dev)
+ {
+ DBG (DBG_info,
+ "sane_open: couldn't find `%s' in devlist, trying attach\n",
+ devicename);
+ RIE (attach (devicename, &dev, SANE_TRUE));
+ }
+ else
+ DBG (DBG_info, "sane_open: found `%s' in devlist\n",
+ dev->model->name);
+ }
+ else
+ {
+ /* empty devicename or "genesys" -> use first device */
+ dev = first_dev;
+ if (dev)
+ {
+ devicename = dev->file_name;
+ DBG (DBG_info, "sane_open: empty devicename, trying `%s'\n",
+ devicename);
+ }
+ }
+
+ if (!dev)
+ return SANE_STATUS_INVAL;
+
+ if (dev->model->flags & GENESYS_FLAG_UNTESTED)
+ {
+ DBG (DBG_error0,
+ "WARNING: Your scanner is not fully supported or at least \n");
+ DBG (DBG_error0,
+ " had only limited testing. Please be careful and \n");
+ DBG (DBG_error0, " report any failure/success to \n");
+ DBG (DBG_error0,
+ " sane-devel@lists.alioth.debian.org. Please provide as many\n");
+ DBG (DBG_error0,
+ " details as possible, e.g. the exact name of your\n");
+ DBG (DBG_error0, " scanner and what does (not) work.\n");
+ }
+
+ status = sanei_usb_open (dev->file_name, &dev->dn);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_warn, "sane_open: couldn't open device `%s': %s\n",
+ dev->file_name, sane_strstatus (status));
+ return status;
+ }
+
+
+ s = malloc (sizeof (*s));
+ if (!s)
+ return SANE_STATUS_NO_MEM;
+
+ s->dev = dev;
+ s->scanning = SANE_FALSE;
+ s->dev->read_buffer.buffer = NULL;
+ s->dev->lines_buffer.buffer = NULL;
+ s->dev->shrink_buffer.buffer = NULL;
+ s->dev->out_buffer.buffer = NULL;
+ s->dev->binarize_buffer.buffer = NULL;
+ s->dev->local_buffer.buffer = NULL;
+ s->dev->parking = SANE_FALSE;
+ s->dev->read_active = SANE_FALSE;
+ s->dev->white_average_data = NULL;
+ s->dev->dark_average_data = NULL;
+ s->dev->calibration_cache = NULL;
+ s->dev->calib_file = NULL;
+ s->dev->img_buffer = NULL;
+ s->dev->line_interp = 0;
+ s->dev->line_count = 0;
+ s->dev->segnb = 0;
+ s->dev->oe_buffer.buffer=NULL;
+ s->dev->binary=NULL;
+
+ /* insert newly opened handle into list of open handles: */
+ s->next = first_handle;
+ first_handle = s;
+ *handle = s;
+
+ if (!dev->already_initialized)
+ sanei_genesys_init_structs (dev);
+
+ RIE (init_options (s));
+
+ if (sanei_genesys_init_cmd_set (s->dev) != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error0, "This device doesn't have a valid command set!!\n");
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ RIE (dev->model->cmd_set->init (dev));
+
+ /* here is the place to fetch a stored calibration cache */
+
+ /* create calibration-filename
+ lifted from plustek-usb.c
+ */
+ /* we should add a unique identifying feature to the file name
+ to support multiple scanners of the same model, but to my
+ knowledge, there is no such thing in these scanners.
+ (At least the usb serial is always "0".)
+ TODO add an storedir option to genesys.conf
+ */
+
+ ptr = getenv ("HOME");
+ if (NULL == ptr)
+ {
+ sprintf (tmp_str, "/tmp/%s.cal", s->dev->model->name);
+ }
+ else
+ {
+#ifdef HAVE_MKDIR
+ /* make sure .sane directory exists */
+ sprintf (tmp_str, "%s/.sane", ptr);
+ mkdir(tmp_str,0700);
+#endif
+ sprintf (tmp_str, "%s/.sane/%s.cal", ptr, s->dev->model->name);
+ }
+
+ s->val[OPT_CALIBRATION_FILE].s = strdup (tmp_str);
+ s->dev->calib_file = strdup (tmp_str);
+ DBG (DBG_info, "Calibration filename set to:\n");
+ DBG (DBG_info, ">%s<\n", s->dev->calib_file);
+
+ /* now open file, fetch calibration records */
+
+ sanei_genesys_read_calibration (s->dev);
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+void
+sane_close (SANE_Handle handle)
+{
+ Genesys_Scanner *prev, *s;
+ Genesys_Calibration_Cache *cache, *next_cache;
+ SANE_Status status;
+
+ DBGSTART;
+
+ /* remove handle from list of open handles: */
+ prev = 0;
+ for (s = first_handle; s; s = s->next)
+ {
+ if (s == handle)
+ break;
+ prev = s;
+ }
+ if (!s)
+ {
+ DBG (DBG_error, "sane_close: invalid handle %p\n", handle);
+ return; /* oops, not a handle we know about */
+ }
+
+ /* eject document for sheetfed scanners */
+ if (s->dev->model->is_sheetfed == SANE_TRUE)
+ {
+ s->dev->model->cmd_set->eject_document (s->dev);
+ }
+ else
+ {
+ /* in case scanner is parking, wait for the head
+ * to reach home position */
+ if(s->dev->parking==SANE_TRUE)
+ {
+ status = sanei_genesys_wait_for_home (s->dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "sane_close: failed to wait for head to park: %s\n",
+ sane_strstatus (status));
+ }
+ }
+ }
+
+ /* enable power saving before leaving */
+ status = s->dev->model->cmd_set->save_power (s->dev, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "sane_close: failed to enable power saving mode: %s\n",
+ sane_strstatus (status));
+ }
+
+ /* here is the place to store calibration cache */
+ write_calibration (s->dev);
+
+ for (cache = s->dev->calibration_cache; cache; cache = next_cache)
+ {
+ next_cache = cache->next;
+ free (cache->dark_average_data);
+ free (cache->white_average_data);
+ free (cache);
+ }
+
+ sanei_genesys_buffer_free (&(s->dev->read_buffer));
+ sanei_genesys_buffer_free (&(s->dev->lines_buffer));
+ sanei_genesys_buffer_free (&(s->dev->shrink_buffer));
+ sanei_genesys_buffer_free (&(s->dev->out_buffer));
+ sanei_genesys_buffer_free (&(s->dev->binarize_buffer));
+ sanei_genesys_buffer_free (&(s->dev->local_buffer));
+ FREE_IFNOT_NULL (s->dev->white_average_data);
+ FREE_IFNOT_NULL (s->dev->dark_average_data);
+ FREE_IFNOT_NULL (s->dev->calib_file);
+
+ /* free allocated gamma tables */
+ FREE_IFNOT_NULL (s->dev->sensor.gamma_table[0]);
+ FREE_IFNOT_NULL (s->dev->sensor.gamma_table[1]);
+ FREE_IFNOT_NULL (s->dev->sensor.gamma_table[2]);
+
+ /* for an handful of bytes .. */
+ free ((void *)(size_t)s->opt[OPT_RESOLUTION].constraint.word_list);
+ free (s->val[OPT_SOURCE].s);
+ free (s->val[OPT_MODE].s);
+ free (s->val[OPT_COLOR_FILTER].s);
+ free ((void *)(size_t)s->opt[OPT_TL_X].constraint.range);
+ free ((void *)(size_t)s->opt[OPT_TL_Y].constraint.range);
+
+ if (prev)
+ prev->next = s->next;
+ else
+ first_handle = s->next;
+
+ /* LAMP OFF : same register across all the ASICs */
+ sanei_genesys_write_register (s->dev, 0x03, 0x00);
+
+ /* we need this to avoid ASIC getting stuck
+ * in bulk writes */
+ if(s->dev->model->asic_type==GENESYS_GL847
+ ||s->dev->model->asic_type==GENESYS_GL845
+ ||s->dev->model->asic_type==GENESYS_GL845
+ ||s->dev->model->asic_type==GENESYS_GL843)
+ sanei_usb_reset (s->dev->dn);
+
+ sanei_usb_close (s->dev->dn);
+ free (s);
+
+ DBGCOMPLETED;
+}
+
+const SANE_Option_Descriptor *
+sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
+{
+ Genesys_Scanner *s = handle;
+
+ if ((unsigned) option >= NUM_OPTIONS)
+ return 0;
+ DBG (DBG_io2, "sane_get_option_descriptor: option = %s (%d)\n",
+ s->opt[option].name, option);
+ return s->opt + option;
+}
+
+/* gets an option , called by sane_control_option */
+static SANE_Status
+get_option_value (Genesys_Scanner * s, int option, void *val)
+{
+ unsigned int i;
+ SANE_Word *table ,tmp;
+ uint16_t *gamma;
+ SANE_Status status = SANE_STATUS_GOOD;
+ Genesys_Calibration_Cache *cache;
+
+ switch (option)
+ {
+ /* geometry */
+ case OPT_TL_X:
+ case OPT_TL_Y:
+ case OPT_BR_X:
+ case OPT_BR_Y:
+ *(SANE_Word *) val = s->val[option].w;
+ /* switch coordinate to keep them coherent */
+ if (s->val[OPT_TL_X].w >= s->val[OPT_BR_X].w)
+ {
+ tmp=s->val[OPT_BR_X].w;
+ s->val[OPT_BR_X].w=s->val[OPT_TL_X].w;
+ s->val[OPT_TL_X].w=tmp;
+ }
+ if (s->val[OPT_TL_Y].w >= s->val[OPT_BR_Y].w)
+ {
+ tmp=s->val[OPT_BR_Y].w;
+ s->val[OPT_BR_Y].w=s->val[OPT_TL_Y].w;
+ s->val[OPT_TL_Y].w=tmp;
+ }
+ break;
+ /* word options: */
+ case OPT_NUM_OPTS:
+ case OPT_RESOLUTION:
+ case OPT_BIT_DEPTH:
+ case OPT_PREVIEW:
+ case OPT_THRESHOLD:
+ case OPT_THRESHOLD_CURVE:
+ case OPT_DISABLE_DYNAMIC_LINEART:
+ case OPT_DISABLE_INTERPOLATION:
+ case OPT_LAMP_OFF:
+ case OPT_LAMP_OFF_TIME:
+ case OPT_SWDESKEW:
+ case OPT_SWCROP:
+ case OPT_SWDESPECK:
+ case OPT_SWDEROTATE:
+ case OPT_SWSKIP:
+ case OPT_DESPECK:
+ case OPT_CONTRAST:
+ case OPT_BRIGHTNESS:
+ *(SANE_Word *) val = s->val[option].w;
+ break;
+ case OPT_CUSTOM_GAMMA:
+ *(SANE_Word *) val = s->val[option].w;
+ break;
+
+ /* string options: */
+ case OPT_MODE:
+ case OPT_COLOR_FILTER:
+ case OPT_CALIBRATION_FILE:
+ case OPT_SOURCE:
+ strcpy (val, s->val[option].s);
+ break;
+
+ /* word array options */
+ case OPT_GAMMA_VECTOR:
+ table = (SANE_Word *) val;
+ if (strcmp (s->val[OPT_COLOR_FILTER].s, "Red") == 0)
+ {
+ gamma = s->dev->sensor.gamma_table[GENESYS_RED];
+ }
+ else if (strcmp (s->val[OPT_COLOR_FILTER].s, "Blue") == 0)
+ {
+ gamma = s->dev->sensor.gamma_table[GENESYS_BLUE];
+ }
+ else
+ {
+ gamma = s->dev->sensor.gamma_table[GENESYS_GREEN];
+ }
+ for (i = 0; i < s->opt[option].size / sizeof (SANE_Word); i++)
+ {
+ table[i] = gamma[i];
+ }
+ break;
+ case OPT_GAMMA_VECTOR_R:
+ table = (SANE_Word *) val;
+ for (i = 0; i < s->opt[option].size / sizeof (SANE_Word); i++)
+ {
+ table[i] = s->dev->sensor.gamma_table[GENESYS_RED][i];
+ }
+ break;
+ case OPT_GAMMA_VECTOR_G:
+ table = (SANE_Word *) val;
+ for (i = 0; i < s->opt[option].size / sizeof (SANE_Word); i++)
+ {
+ table[i] = s->dev->sensor.gamma_table[GENESYS_GREEN][i];
+ }
+ break;
+ case OPT_GAMMA_VECTOR_B:
+ table = (SANE_Word *) val;
+ for (i = 0; i < s->opt[option].size / sizeof (SANE_Word); i++)
+ {
+ table[i] = s->dev->sensor.gamma_table[GENESYS_BLUE][i];
+ }
+ break;
+ /* sensors */
+ case OPT_SCAN_SW:
+ case OPT_FILE_SW:
+ case OPT_EMAIL_SW:
+ case OPT_COPY_SW:
+ case OPT_PAGE_LOADED_SW:
+ case OPT_OCR_SW:
+ case OPT_POWER_SW:
+ case OPT_EXTRA_SW:
+ RIE (s->dev->model->cmd_set->update_hardware_sensors (s));
+ *(SANE_Bool *) val = s->val[option].b;
+ s->last_val[option].b = *(SANE_Bool *) val;
+ break;
+ case OPT_NEED_CALIBRATION_SW:
+ /* scanner needs calibration for current mode unless a matching
+ * calibration cache is found */
+ *(SANE_Bool *) val = SANE_TRUE;
+ for (cache = s->dev->calibration_cache; cache; cache = cache->next)
+ {
+ if (s->dev->model->
+ cmd_set->is_compatible_calibration (s->dev, cache, SANE_FALSE) == SANE_STATUS_GOOD)
+ {
+ *(SANE_Bool *) val = SANE_FALSE;
+ }
+ }
+ break;
+ default:
+ DBG (DBG_warn, "get_option_value: can't get unknown option %d\n",
+ option);
+ }
+ return status;
+}
+
+/** @brief set calibration file value
+ * Set calibration file value. Load new cache values from file if it exists,
+ * else creates the file*/
+static SANE_Status set_calibration_value (Genesys_Scanner * s, int option, void *val)
+{
+ SANE_Status status=SANE_STATUS_GOOD;
+ char *tmp;
+ Genesys_Calibration_Cache *cache;
+ Genesys_Device *dev=s->dev;
+
+ /* try to load file */
+ tmp=dev->calib_file;
+ dev->calib_file=val;
+ status=sanei_genesys_read_calibration (dev);
+
+ /* file exists but is invalid */
+ if (status!=SANE_STATUS_IO_ERROR && status!=SANE_STATUS_GOOD)
+ {
+ dev->calib_file=tmp;
+ return status;
+ }
+
+ /* we can set no file name value */
+ if (s->val[option].s)
+ free (s->val[option].s);
+ s->val[option].s = strdup (val);
+ if (tmp)
+ free (tmp);
+ dev->calib_file = strdup (val);
+
+ /* clear device calibration cache */
+ while(dev->calibration_cache!=NULL)
+ {
+ cache=dev->calibration_cache;
+ dev->calibration_cache=dev->calibration_cache->next;
+ free(cache);
+ }
+
+ return SANE_STATUS_GOOD;
+}
+
+/* sets an option , called by sane_control_option */
+static SANE_Status
+set_option_value (Genesys_Scanner * s, int option, void *val,
+ SANE_Int * myinfo)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ SANE_Word *table;
+ unsigned int i;
+ SANE_Range *x_range, *y_range;
+ Genesys_Calibration_Cache *cache, *next_cache;
+
+ switch (option)
+ {
+ case OPT_TL_X:
+ case OPT_TL_Y:
+ case OPT_BR_X:
+ case OPT_BR_Y:
+ s->val[option].w = *(SANE_Word *) val;
+ RIE (calc_parameters (s));
+ *myinfo |= SANE_INFO_RELOAD_PARAMS;
+ break;
+ case OPT_RESOLUTION:
+ case OPT_THRESHOLD:
+ case OPT_THRESHOLD_CURVE:
+ case OPT_DISABLE_DYNAMIC_LINEART:
+ case OPT_SWCROP:
+ case OPT_SWDESKEW:
+ case OPT_DESPECK:
+ case OPT_SWDEROTATE:
+ case OPT_SWSKIP:
+ case OPT_DISABLE_INTERPOLATION:
+ case OPT_LAMP_OFF:
+ case OPT_PREVIEW:
+ case OPT_BRIGHTNESS:
+ case OPT_CONTRAST:
+ s->val[option].w = *(SANE_Word *) val;
+ RIE (calc_parameters (s));
+ *myinfo |= SANE_INFO_RELOAD_PARAMS;
+ break;
+ case OPT_SWDESPECK:
+ s->val[option].w = *(SANE_Word *) val;
+ if (s->val[OPT_SWDESPECK].b == SANE_TRUE)
+ {
+ ENABLE(OPT_DESPECK);
+ }
+ else
+ {
+ DISABLE(OPT_DESPECK);
+ }
+ RIE (calc_parameters (s));
+ *myinfo |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
+ break;
+ /* software enhancement functions only apply to 8 or 1 bits data */
+ case OPT_BIT_DEPTH:
+ s->val[option].w = *(SANE_Word *) val;
+ if(s->val[OPT_BIT_DEPTH].w>8)
+ {
+ DISABLE(OPT_SWDESKEW);
+ DISABLE(OPT_SWDESPECK);
+ DISABLE(OPT_SWCROP);
+ DISABLE(OPT_DESPECK);
+ DISABLE(OPT_SWDEROTATE);
+ DISABLE(OPT_SWSKIP);
+ DISABLE(OPT_CONTRAST);
+ DISABLE(OPT_BRIGHTNESS);
+ }
+ else
+ {
+ ENABLE(OPT_SWDESKEW);
+ ENABLE(OPT_SWDESPECK);
+ ENABLE(OPT_SWCROP);
+ ENABLE(OPT_DESPECK);
+ ENABLE(OPT_SWDEROTATE);
+ ENABLE(OPT_SWSKIP);
+ ENABLE(OPT_CONTRAST);
+ ENABLE(OPT_BRIGHTNESS);
+ }
+ RIE (calc_parameters (s));
+ *myinfo |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
+ break;
+ case OPT_SOURCE:
+ if (strcmp (s->val[option].s, val) != 0)
+ { /* something changed */
+ if (s->val[option].s)
+ free (s->val[option].s);
+ s->val[option].s = strdup (val);
+
+ /* change geometry constraint to the new source value */
+ if (strcmp (s->val[option].s, FLATBED) == 0)
+ {
+ x_range=create_range(s->dev->model->x_size);
+ y_range=create_range(s->dev->model->y_size);
+ }
+ else
+ {
+ x_range=create_range(s->dev->model->x_size_ta);
+ y_range=create_range(s->dev->model->y_size_ta);
+ }
+ if(x_range==NULL || y_range==NULL)
+ {
+ return SANE_STATUS_NO_MEM;
+ }
+
+ /* assign new values */
+ free((void *)(size_t)s->opt[OPT_TL_X].constraint.range);
+ free((void *)(size_t)s->opt[OPT_TL_Y].constraint.range);
+ s->opt[OPT_TL_X].constraint.range = x_range;
+ s->val[OPT_TL_X].w = 0;
+ s->opt[OPT_TL_Y].constraint.range = y_range;
+ s->val[OPT_TL_Y].w = 0;
+ s->opt[OPT_BR_X].constraint.range = x_range;
+ s->val[OPT_BR_Y].w = y_range->max;
+ s->opt[OPT_BR_Y].constraint.range = y_range;
+ s->val[OPT_BR_X].w = x_range->max;
+
+ /* signals reload */
+ *myinfo |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
+ }
+ break;
+ case OPT_MODE:
+ if (s->val[option].s)
+ free (s->val[option].s);
+ s->val[option].s = strdup (val);
+
+ if (strcmp (s->val[option].s, SANE_VALUE_SCAN_MODE_LINEART) == 0)
+ {
+ ENABLE (OPT_THRESHOLD);
+ ENABLE (OPT_THRESHOLD_CURVE);
+ DISABLE (OPT_BIT_DEPTH);
+ if (s->dev->model->asic_type != GENESYS_GL646 || !s->dev->model->is_cis)
+ {
+ ENABLE (OPT_COLOR_FILTER);
+ }
+ ENABLE (OPT_DISABLE_DYNAMIC_LINEART);
+ }
+ else
+ {
+ DISABLE (OPT_THRESHOLD);
+ DISABLE (OPT_THRESHOLD_CURVE);
+ DISABLE (OPT_DISABLE_DYNAMIC_LINEART);
+ if (strcmp (s->val[option].s, SANE_VALUE_SCAN_MODE_GRAY) == 0)
+ {
+ if (s->dev->model->asic_type != GENESYS_GL646 || !s->dev->model->is_cis)
+ {
+ ENABLE (OPT_COLOR_FILTER);
+ }
+ create_bpp_list (s, s->dev->model->bpp_gray_values);
+ }
+ else
+ {
+ DISABLE (OPT_COLOR_FILTER);
+ create_bpp_list (s, s->dev->model->bpp_color_values);
+ }
+ if (s->bpp_list[0] < 2)
+ DISABLE (OPT_BIT_DEPTH);
+ else
+ ENABLE (OPT_BIT_DEPTH);
+ }
+ RIE (calc_parameters (s));
+
+ /* if custom gamma, toggle gamma table options according to the mode */
+ if (s->val[OPT_CUSTOM_GAMMA].b == SANE_TRUE)
+ {
+ if (strcmp (s->val[option].s, SANE_VALUE_SCAN_MODE_COLOR) == 0)
+ {
+ DISABLE (OPT_GAMMA_VECTOR);
+ ENABLE (OPT_GAMMA_VECTOR_R);
+ ENABLE (OPT_GAMMA_VECTOR_G);
+ ENABLE (OPT_GAMMA_VECTOR_B);
+ }
+ else
+ {
+ ENABLE (OPT_GAMMA_VECTOR);
+ DISABLE (OPT_GAMMA_VECTOR_R);
+ DISABLE (OPT_GAMMA_VECTOR_G);
+ DISABLE (OPT_GAMMA_VECTOR_B);
+ }
+ }
+
+ *myinfo |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
+ break;
+ case OPT_COLOR_FILTER:
+ if (s->val[option].s)
+ free (s->val[option].s);
+ s->val[option].s = strdup (val);
+ RIE (calc_parameters (s));
+ break;
+ case OPT_CALIBRATION_FILE:
+ RIE(set_calibration_value (s, option, val));
+ break;
+ case OPT_LAMP_OFF_TIME:
+ if (*(SANE_Word *) val != s->val[option].w)
+ {
+ s->val[option].w = *(SANE_Word *) val;
+ RIE (s->dev->model->cmd_set->
+ set_powersaving (s->dev, s->val[option].w));
+ }
+ break;
+
+ case OPT_CUSTOM_GAMMA:
+ *myinfo |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
+ s->val[OPT_CUSTOM_GAMMA].b = *(SANE_Bool *) val;
+
+ if (s->val[OPT_CUSTOM_GAMMA].b == SANE_TRUE)
+ {
+ if (strcmp (s->val[OPT_MODE].s, SANE_VALUE_SCAN_MODE_COLOR) == 0)
+ {
+ DISABLE (OPT_GAMMA_VECTOR);
+ ENABLE (OPT_GAMMA_VECTOR_R);
+ ENABLE (OPT_GAMMA_VECTOR_G);
+ ENABLE (OPT_GAMMA_VECTOR_B);
+ }
+ else
+ {
+ ENABLE (OPT_GAMMA_VECTOR);
+ DISABLE (OPT_GAMMA_VECTOR_R);
+ DISABLE (OPT_GAMMA_VECTOR_G);
+ DISABLE (OPT_GAMMA_VECTOR_B);
+ }
+ }
+ else
+ {
+ DISABLE (OPT_GAMMA_VECTOR);
+ DISABLE (OPT_GAMMA_VECTOR_R);
+ DISABLE (OPT_GAMMA_VECTOR_G);
+ DISABLE (OPT_GAMMA_VECTOR_B);
+ /* restore default sensor gamma table */
+ /* currently there is no sensor's specific gamma table,
+ * tables are built by sanei_genesys_create_gamma_table */
+ sanei_genesys_create_gamma_table (s->dev->sensor.gamma_table[GENESYS_RED],
+ s->opt[OPT_GAMMA_VECTOR_R].size / sizeof (SANE_Word),
+ s->opt[OPT_GAMMA_VECTOR_R].constraint.range->max,
+ s->opt[OPT_GAMMA_VECTOR_R].constraint.range->max,
+ s->dev->sensor.gamma[GENESYS_RED]);
+ sanei_genesys_create_gamma_table (s->dev->sensor.gamma_table[GENESYS_GREEN],
+ s->opt[OPT_GAMMA_VECTOR_G].size / sizeof (SANE_Word),
+ s->opt[OPT_GAMMA_VECTOR_G].constraint.range->max,
+ s->opt[OPT_GAMMA_VECTOR_G].constraint.range->max,
+ s->dev->sensor.gamma[GENESYS_GREEN]);
+ sanei_genesys_create_gamma_table (s->dev->sensor.gamma_table[GENESYS_BLUE],
+ s->opt[OPT_GAMMA_VECTOR_B].size / sizeof (SANE_Word),
+ s->opt[OPT_GAMMA_VECTOR_B].constraint.range->max,
+ s->opt[OPT_GAMMA_VECTOR_B].constraint.range->max,
+ s->dev->sensor.gamma[GENESYS_BLUE]);
+ }
+ break;
+
+ case OPT_GAMMA_VECTOR:
+ table = (SANE_Word *) val;
+ for (i = 0; i < s->opt[option].size / sizeof (SANE_Word); i++)
+ {
+ s->dev->sensor.gamma_table[GENESYS_RED][i] = table[i];
+ s->dev->sensor.gamma_table[GENESYS_GREEN][i] = table[i];
+ s->dev->sensor.gamma_table[GENESYS_BLUE][i] = table[i];
+ }
+ break;
+ case OPT_GAMMA_VECTOR_R:
+ table = (SANE_Word *) val;
+ for (i = 0; i < s->opt[option].size / sizeof (SANE_Word); i++)
+ {
+ s->dev->sensor.gamma_table[GENESYS_RED][i] = table[i];
+ }
+ break;
+ case OPT_GAMMA_VECTOR_G:
+ table = (SANE_Word *) val;
+ for (i = 0; i < s->opt[option].size / sizeof (SANE_Word); i++)
+ {
+ s->dev->sensor.gamma_table[GENESYS_GREEN][i] = table[i];
+ }
+ break;
+ case OPT_GAMMA_VECTOR_B:
+ table = (SANE_Word *) val;
+ for (i = 0; i < s->opt[option].size / sizeof (SANE_Word); i++)
+ {
+ s->dev->sensor.gamma_table[GENESYS_BLUE][i] = table[i];
+ }
+ break;
+ case OPT_CALIBRATE:
+ status = s->dev->model->cmd_set->save_power (s->dev, SANE_FALSE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to disable power saving mode: %s\n",
+ __FUNCTION__, sane_strstatus (status));
+ }
+ else
+ status = genesys_scanner_calibration (s->dev);
+ /* not critical if this fails*/
+ s->dev->model->cmd_set->save_power (s->dev, SANE_TRUE);
+ /* signals that sensors will have to be read again */
+ *myinfo |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
+ break;
+ case OPT_CLEAR_CALIBRATION:
+ /* clear calibration cache */
+ if (s->dev->calibration_cache != NULL)
+ {
+ for (cache = s->dev->calibration_cache; cache; cache = next_cache)
+ {
+ next_cache = cache->next;
+ free (cache->dark_average_data);
+ free (cache->white_average_data);
+ free (cache);
+ }
+ }
+ s->dev->calibration_cache = NULL;
+ /* remove file */
+ unlink (s->dev->calib_file);
+ /* signals that sensors will have to be read again */
+ *myinfo |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
+ break;
+
+ default:
+ DBG (DBG_warn, "set_option_value: can't set unknown option %d\n",
+ option);
+ }
+ return status;
+}
+
+
+/* sets and gets scanner option values */
+SANE_Status
+sane_control_option (SANE_Handle handle, SANE_Int option,
+ SANE_Action action, void *val, SANE_Int * info)
+{
+ Genesys_Scanner *s = handle;
+ SANE_Status status = SANE_STATUS_GOOD;
+ SANE_Word cap;
+ SANE_Int myinfo = 0;
+
+ DBG (DBG_io2,
+ "sane_control_option: start: action = %s, option = %s (%d)\n",
+ (action == SANE_ACTION_GET_VALUE) ? "get" : (action ==
+ SANE_ACTION_SET_VALUE) ?
+ "set" : (action == SANE_ACTION_SET_AUTO) ? "set_auto" : "unknown",
+ s->opt[option].name, option);
+
+ if (info)
+ *info = 0;
+
+ if (s->scanning)
+ {
+ DBG (DBG_warn, "sane_control_option: don't call this function while "
+ "scanning (option = %s (%d))\n", s->opt[option].name, option);
+
+ return SANE_STATUS_DEVICE_BUSY;
+ }
+ if (option >= NUM_OPTIONS || option < 0)
+ {
+ DBG (DBG_warn,
+ "sane_control_option: option %d >= NUM_OPTIONS || option < 0\n",
+ option);
+ return SANE_STATUS_INVAL;
+ }
+
+ cap = s->opt[option].cap;
+
+ if (!SANE_OPTION_IS_ACTIVE (cap))
+ {
+ DBG (DBG_warn, "sane_control_option: option %d is inactive\n", option);
+ return SANE_STATUS_INVAL;
+ }
+
+ switch (action)
+ {
+ case SANE_ACTION_GET_VALUE:
+ status = get_option_value (s, option, val);
+ break;
+
+ case SANE_ACTION_SET_VALUE:
+ if (!SANE_OPTION_IS_SETTABLE (cap))
+ {
+ DBG (DBG_warn, "sane_control_option: option %d is not settable\n",
+ option);
+ return SANE_STATUS_INVAL;
+ }
+
+ status = sanei_constrain_value (s->opt + option, val, &myinfo);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_warn,
+ "sane_control_option: sanei_constrain_value returned %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = set_option_value (s, option, val, &myinfo);
+ break;
+
+ case SANE_ACTION_SET_AUTO:
+ DBG (DBG_error,
+ "sane_control_option: SANE_ACTION_SET_AUTO unsupported since no option has SANE_CAP_AUTOMATIC\n");
+ status = SANE_STATUS_INVAL;
+ break;
+
+ default:
+ DBG (DBG_warn, "sane_control_option: unknown action %d for option %d\n",
+ action, option);
+ status = SANE_STATUS_INVAL;
+ break;
+ }
+
+ if (info)
+ *info = myinfo;
+
+ DBG (DBG_io2, "sane_control_option: exit\n");
+ return status;
+}
+
+
+
+SANE_Status
+sane_get_parameters (SANE_Handle handle, SANE_Parameters * params)
+{
+ Genesys_Scanner *s = handle;
+ SANE_Status status;
+
+ DBGSTART;
+
+ /* don't recompute parameters once data reading is active, ie during scan */
+ if(s->dev->read_active == SANE_FALSE)
+ {
+ RIE (calc_parameters (s));
+ }
+ if (params)
+ {
+ *params = s->params;
+
+ /* in the case of a sheetfed scanner, when full height is specified
+ * we override the computed line number with -1 to signal that we
+ * don't know the real document height.
+ * We don't do that doing buffering image for digital processing
+ */
+ if (s->dev->model->is_sheetfed == SANE_TRUE
+ && s->dev->buffer_image == SANE_FALSE
+ && s->val[OPT_BR_Y].w == s->opt[OPT_BR_Y].constraint.range->max)
+ {
+ params->lines = -1;
+ }
+ }
+
+ DBGCOMPLETED;
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_start (SANE_Handle handle)
+{
+ Genesys_Scanner *s = handle;
+ SANE_Status status=SANE_STATUS_GOOD;
+
+ DBGSTART;
+
+ if (s->val[OPT_TL_X].w >= s->val[OPT_BR_X].w)
+ {
+ DBG (DBG_error0,
+ "sane_start: top left x >= bottom right x --- exiting\n");
+ return SANE_STATUS_INVAL;
+ }
+ if (s->val[OPT_TL_Y].w >= s->val[OPT_BR_Y].w)
+ {
+ DBG (DBG_error0,
+ "sane_start: top left y >= bottom right y --- exiting\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ /* First make sure we have a current parameter set. Some of the
+ parameters will be overwritten below, but that's OK. */
+
+ RIE (calc_parameters (s));
+ RIE (genesys_start_scan (s->dev, s->val[OPT_LAMP_OFF].w));
+
+ s->scanning = SANE_TRUE;
+
+ /* allocate intermediate buffer when doing dynamic lineart */
+ if(s->dev->settings.dynamic_lineart==SANE_TRUE)
+ {
+ RIE (sanei_genesys_buffer_free (&(s->dev->binarize_buffer)));
+ RIE (sanei_genesys_buffer_alloc (&(s->dev->binarize_buffer), s->dev->settings.pixels));
+ RIE (sanei_genesys_buffer_free (&(s->dev->local_buffer)));
+ RIE (sanei_genesys_buffer_alloc (&(s->dev->local_buffer), s->dev->binarize_buffer.size * 8));
+ }
+
+ /* if one of the software enhancement option is selected,
+ * we do the scan internally, process picture then put it an internal
+ * buffer. Since cropping may change scan parameters, we recompute them
+ * at the end */
+ if (s->dev->buffer_image)
+ {
+ RIE(genesys_buffer_image(s));
+
+ /* check if we need to skip this page, sheetfed scanners
+ * can go to next doc while flatbed ones can't */
+ if (s->val[OPT_SWSKIP].w && IS_ACTIVE(OPT_SWSKIP))
+ {
+ status = sanei_magic_isBlank(&s->params,
+ s->dev->img_buffer,
+ SANE_UNFIX(s->val[OPT_SWSKIP].w));
+ if(status == SANE_STATUS_NO_DOCS)
+ {
+ if (s->dev->model->is_sheetfed == SANE_TRUE)
+ {
+ DBG (DBG_info, "sane_start: blank page, recurse\n");
+ return sane_start(handle);
+ }
+ return status;
+ }
+ }
+
+ /* deskew image if required */
+ if(s->val[OPT_SWDESKEW].b == SANE_TRUE)
+ {
+ RIE(genesys_deskew(s));
+ }
+
+ /* despeck image if required */
+ if(s->val[OPT_SWDESPECK].b == SANE_TRUE)
+ {
+ RIE(genesys_despeck(s));
+ }
+
+ /* crop image if required */
+ if(s->val[OPT_SWCROP].b == SANE_TRUE)
+ {
+ RIE(genesys_crop(s));
+ }
+
+ /* de-rotate image if required */
+ if(s->val[OPT_SWDEROTATE].b == SANE_TRUE)
+ {
+ RIE(genesys_derotate(s));
+ }
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+SANE_Status
+sane_read (SANE_Handle handle, SANE_Byte * buf, SANE_Int max_len,
+ SANE_Int * len)
+{
+ Genesys_Scanner *s = handle;
+ Genesys_Device *dev;
+ SANE_Status status=SANE_STATUS_GOOD;
+ size_t local_len;
+
+ if (!s)
+ {
+ DBG (DBG_error, "sane_read: handle is null!\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ dev=s->dev;
+ if (!dev)
+ {
+ DBG (DBG_error, "sane_read: dev is null!\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ if (!buf)
+ {
+ DBG (DBG_error, "sane_read: buf is null!\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ if (!len)
+ {
+ DBG (DBG_error, "sane_read: len is null!\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ *len = 0;
+
+ if (!s->scanning)
+ {
+ DBG (DBG_warn, "sane_read: scan was cancelled, is over or has not been "
+ "initiated yet\n");
+ return SANE_STATUS_CANCELLED;
+ }
+
+ DBG (DBG_proc, "sane_read: start, %d maximum bytes required\n", max_len);
+ DBG (DBG_io2, "sane_read: bytes_to_read=%lu, total_bytes_read=%lu\n",
+ (u_long) dev->total_bytes_to_read, (u_long) dev->total_bytes_read);
+ DBG (DBG_io2, "sane_read: physical bytes to read = %lu\n", (u_long) dev->read_bytes_left);
+
+ if(dev->total_bytes_read>=dev->total_bytes_to_read)
+ {
+ DBG (DBG_proc, "sane_read: nothing more to scan: EOF\n");
+
+ /* issue park command immediatly in case scanner can handle it
+ * so we save time */
+ if (dev->model->is_sheetfed == SANE_FALSE
+ && !(dev->model->flags & GENESYS_FLAG_MUST_WAIT)
+ && dev->parking == SANE_FALSE)
+ {
+ dev->model->cmd_set->slow_back_home (dev, SANE_FALSE);
+ dev->parking = SANE_TRUE;
+ }
+ return SANE_STATUS_EOF;
+ }
+
+ local_len = max_len;
+
+ /* in case of image processing, all data has been stored in
+ * buffer_image. So read data from it if it exists, else from scanner */
+ if(!dev->buffer_image)
+ {
+ /* dynamic lineart is another kind of digital processing that needs
+ * another layer of buffering on top of genesys_read_ordered_data */
+ if(dev->settings.dynamic_lineart==SANE_TRUE)
+ {
+ /* if buffer is empty, fill it with genesys_read_ordered_data */
+ if(dev->binarize_buffer.avail==0)
+ {
+ /* store gray data */
+ local_len=dev->local_buffer.size;
+ status = genesys_read_ordered_data (dev, dev->local_buffer.buffer, &local_len);
+
+ /* binarize data is read successful */
+ if(status==SANE_STATUS_GOOD)
+ {
+ dev->local_buffer.avail=local_len;
+ dev->local_buffer.pos=0;
+ dev->binarize_buffer.avail=local_len/8;
+ dev->binarize_buffer.pos=0;
+ genesys_gray_lineart (dev,
+ dev->local_buffer.buffer,
+ dev->binarize_buffer.buffer,
+ dev->settings.pixels,
+ local_len/dev->settings.pixels,
+ dev->settings.threshold);
+ }
+
+ }
+
+ /* return data from lineart buffer if any, up to the available amount */
+ local_len = max_len;
+ if((size_t)max_len>dev->binarize_buffer.avail)
+ {
+ local_len=dev->binarize_buffer.avail;
+ }
+ if(local_len)
+ {
+ memcpy(buf,sanei_genesys_buffer_get_read_pos (&(dev->binarize_buffer)),local_len);
+ RIE (sanei_genesys_buffer_consume (&(dev->binarize_buffer), local_len));
+ }
+ }
+ else
+ {
+ /* most usual case, direct read of data from scanner */
+ status = genesys_read_ordered_data (dev, buf, &local_len);
+ }
+ }
+ else /* read data from buffer */
+ {
+ if(dev->total_bytes_read+local_len>dev->total_bytes_to_read)
+ {
+ local_len=dev->total_bytes_to_read-dev->total_bytes_read;
+ }
+ memcpy(buf,dev->img_buffer+dev->total_bytes_read,local_len);
+ dev->total_bytes_read+=local_len;
+ }
+
+ *len = local_len;
+ if(local_len>(size_t)max_len)
+ {
+ fprintf (stderr, "[genesys] sane_read: returning incorrect length!!\n");
+ }
+ DBG (DBG_proc, "sane_read: %d bytes returned\n", *len);
+ return status;
+}
+
+void
+sane_cancel (SANE_Handle handle)
+{
+ Genesys_Scanner *s = handle;
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBGSTART;
+
+ /* end binary logging if needed */
+ if (s->dev->binary!=NULL)
+ {
+ fclose(s->dev->binary);
+ s->dev->binary=NULL;
+ }
+
+ s->scanning = SANE_FALSE;
+ s->dev->read_active = SANE_FALSE;
+ if(s->dev->img_buffer!=NULL)
+ {
+ free(s->dev->img_buffer);
+ s->dev->img_buffer=NULL;
+ }
+
+ /* no need to end scan if we are parking the head */
+ if(s->dev->parking==SANE_FALSE)
+ {
+ status = s->dev->model->cmd_set->end_scan (s->dev, s->dev->reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sane_cancel: failed to end scan: %s\n",
+ sane_strstatus (status));
+ return;
+ }
+ }
+
+ /* park head if flatbed scanner */
+ if (s->dev->model->is_sheetfed == SANE_FALSE)
+ {
+ if(s->dev->parking==SANE_FALSE)
+ {
+ status = s->dev->model->cmd_set->slow_back_home (s->dev, s->dev->model->flags & GENESYS_FLAG_MUST_WAIT);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "sane_cancel: failed to move scanhead to home position: %s\n",
+ sane_strstatus (status));
+ return;
+ }
+ s->dev->parking = !(s->dev->model->flags & GENESYS_FLAG_MUST_WAIT);
+ }
+ }
+ else
+ { /* in case of sheetfed scanners, we have to eject the document if still present */
+ status = s->dev->model->cmd_set->eject_document (s->dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sane_cancel: failed to eject document: %s\n",
+ sane_strstatus (status));
+ return;
+ }
+ }
+
+ /* enable power saving mode unless we are parking .... */
+ if(s->dev->parking==SANE_FALSE)
+ {
+ status = s->dev->model->cmd_set->save_power (s->dev, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sane_cancel: failed to enable power saving mode: %s\n",
+ sane_strstatus (status));
+ return;
+ }
+ }
+
+ DBGCOMPLETED;
+ return;
+}
+
+SANE_Status
+sane_set_io_mode (SANE_Handle handle, SANE_Bool non_blocking)
+{
+ Genesys_Scanner *s = handle;
+
+ DBG (DBG_proc, "sane_set_io_mode: handle = %p, non_blocking = %s\n",
+ handle, non_blocking == SANE_TRUE ? "true" : "false");
+
+ if (!s->scanning)
+ {
+ DBG (DBG_error, "sane_set_io_mode: not scanning\n");
+ return SANE_STATUS_INVAL;
+ }
+ if (non_blocking)
+ return SANE_STATUS_UNSUPPORTED;
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_get_select_fd (SANE_Handle handle, SANE_Int * fd)
+{
+ Genesys_Scanner *s = handle;
+
+ DBG (DBG_proc, "sane_get_select_fd: handle = %p, fd = %p\n", handle,
+ (void *) fd);
+
+ if (!s->scanning)
+ {
+ DBG (DBG_error, "sane_get_select_fd: not scanning\n");
+ return SANE_STATUS_INVAL;
+ }
+ return SANE_STATUS_UNSUPPORTED;
+}
+
+/* vim: set sw=2 cino=>2se-1sn-1s{s^-1st0(0u0 smarttab expandtab: */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 08:58:44 +0000