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Diffstat (limited to 'backend/genesys_gl846.cc')
| -rw-r--r-- | backend/genesys_gl846.cc | 3393 |
1 files changed, 3393 insertions, 0 deletions
diff --git a/backend/genesys_gl846.cc b/backend/genesys_gl846.cc new file mode 100644 index 0000000..c5294b8 --- /dev/null +++ b/backend/genesys_gl846.cc @@ -0,0 +1,3393 @@ +/* sane - Scanner Access Now Easy. + + Copyright (C) 2012-2013 Stéphane Voltz <stef.dev@free.fr> + + + This file is part of the SANE package. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, + MA 02111-1307, USA. + + As a special exception, the authors of SANE give permission for + additional uses of the libraries contained in this release of SANE. + + The exception is that, if you link a SANE library with other files + to produce an executable, this does not by itself cause the + resulting executable to be covered by the GNU General Public + License. Your use of that executable is in no way restricted on + account of linking the SANE library code into it. + + This exception does not, however, invalidate any other reasons why + the executable file might be covered by the GNU General Public + License. + + If you submit changes to SANE to the maintainers to be included in + a subsequent release, you agree by submitting the changes that + those changes may be distributed with this exception intact. + + If you write modifications of your own for SANE, it is your choice + whether to permit this exception to apply to your modifications. + If you do not wish that, delete this exception notice. +*/ + +/** @file + * + * This file handles GL846 and GL845 ASICs since they are really close to each other. + */ + +#define DEBUG_DECLARE_ONLY + +#include "genesys_gl846.h" + +#include <vector> + +/**************************************************************************** + Mid level functions + ****************************************************************************/ + +static SANE_Bool +gl846_get_fast_feed_bit (Genesys_Register_Set * regs) +{ + GenesysRegister *r = NULL; + + r = sanei_genesys_get_address (regs, REG02); + if (r && (r->value & REG02_FASTFED)) + return SANE_TRUE; + return SANE_FALSE; +} + +static SANE_Bool +gl846_get_filter_bit (Genesys_Register_Set * regs) +{ + GenesysRegister *r = NULL; + + r = sanei_genesys_get_address (regs, REG04); + if (r && (r->value & REG04_FILTER)) + return SANE_TRUE; + return SANE_FALSE; +} + +static SANE_Bool +gl846_get_lineart_bit (Genesys_Register_Set * regs) +{ + GenesysRegister *r = NULL; + + r = sanei_genesys_get_address (regs, REG04); + if (r && (r->value & REG04_LINEART)) + return SANE_TRUE; + return SANE_FALSE; +} + +static SANE_Bool +gl846_get_bitset_bit (Genesys_Register_Set * regs) +{ + GenesysRegister *r = NULL; + + r = sanei_genesys_get_address (regs, REG04); + if (r && (r->value & REG04_BITSET)) + return SANE_TRUE; + return SANE_FALSE; +} + +static SANE_Bool +gl846_get_gain4_bit (Genesys_Register_Set * regs) +{ + GenesysRegister *r = NULL; + + r = sanei_genesys_get_address (regs, 0x06); + if (r && (r->value & REG06_GAIN4)) + return SANE_TRUE; + return SANE_FALSE; +} + +static SANE_Bool +gl846_test_buffer_empty_bit (SANE_Byte val) +{ + if (val & REG41_BUFEMPTY) + return SANE_TRUE; + return SANE_FALSE; +} + +static SANE_Bool +gl846_test_motor_flag_bit (SANE_Byte val) +{ + if (val & REG41_MOTORENB) + return SANE_TRUE; + return SANE_FALSE; +} + +/** + * compute the step multiplier used + */ +static int +gl846_get_step_multiplier (Genesys_Register_Set * regs) +{ + GenesysRegister *r = NULL; + int value = 1; + + r = sanei_genesys_get_address (regs, 0x9d); + if (r != NULL) + { + value = (r->value & 0x0f)>>1; + value = 1 << value; + } + DBG (DBG_io, "%s: step multiplier is %d\n", __func__, value); + return value; +} + +/** @brief sensor profile + * search for the database of motor profiles and get the best one. Each + * profile is at a specific dpihw. Use LiDE 110 table by default. + * @param sensor_type sensor id + * @param dpi hardware dpi for the scan + * @return a pointer to a Sensor_Profile struct + */ +static Sensor_Profile *get_sensor_profile(int sensor_type, int dpi) +{ + unsigned int i; + int idx; + + i=0; + idx=-1; + while(i<sizeof(sensors)/sizeof(Sensor_Profile)) + { + /* exact match */ + if(sensors[i].sensor_type==sensor_type && sensors[i].dpi==dpi) + { + return &(sensors[i]); + } + + /* closest match */ + if(sensors[i].sensor_type==sensor_type) + { + if(idx<0) + { + idx=i; + } + else + { + if(sensors[i].dpi>=dpi + && sensors[i].dpi<sensors[idx].dpi) + { + idx=i; + } + } + } + i++; + } + + /* default fallback */ + if(idx<0) + { + DBG (DBG_warn,"%s: using default sensor profile\n",__func__); + idx=0; + } + + return &(sensors[idx]); +} + +/**@brief compute exposure to use + * compute the sensor exposure based on target resolution + */ +static int gl846_compute_exposure(Genesys_Device *dev, int xres) +{ + Sensor_Profile* sensor_profile=get_sensor_profile(dev->model->ccd_type, xres); + return sensor_profile->exposure; +} + + +/** @brief sensor specific settings +*/ +static void gl846_setup_sensor(Genesys_Device * dev, const Genesys_Sensor& sensor, + Genesys_Register_Set * regs, int dpi) +{ + GenesysRegister *r; + int dpihw; + uint16_t exp; + + DBGSTART; + dpihw=sanei_genesys_compute_dpihw(dev, sensor, dpi); + + for (uint16_t addr = 0x16; addr < 0x1e; addr++) { + regs->set8(addr, sensor.custom_regs.get_value(addr)); + } + + for (uint16_t addr = 0x52; addr < 0x52 + 9; addr++) { + regs->set8(addr, sensor.custom_regs.get_value(addr)); + } + + /* set EXPDUMMY and CKxMAP */ + dpihw=sanei_genesys_compute_dpihw(dev, sensor, dpi); + Sensor_Profile* sensor_profile = get_sensor_profile(dev->model->ccd_type, dpihw); + + sanei_genesys_set_reg_from_set(regs,REG_EXPDMY,(uint8_t)((sensor_profile->expdummy) & 0xff)); + + /* if no calibration has been done, set default values for exposures */ + exp = sensor.exposure.red; + if(exp==0) + { + exp=sensor_profile->expr; + } + sanei_genesys_set_double(regs,REG_EXPR,exp); + + exp = sensor.exposure.green; + if(exp==0) + { + exp=sensor_profile->expg; + } + sanei_genesys_set_double(regs,REG_EXPG,exp); + + exp = sensor.exposure.blue; + if(exp==0) + { + exp=sensor_profile->expb; + } + sanei_genesys_set_double(regs,REG_EXPB,exp); + + sanei_genesys_set_triple(regs,REG_CK1MAP,sensor_profile->ck1map); + sanei_genesys_set_triple(regs,REG_CK3MAP,sensor_profile->ck3map); + sanei_genesys_set_triple(regs,REG_CK4MAP,sensor_profile->ck4map); + + /* order of the sub-segments */ + dev->order=sensor_profile->order; + + r = sanei_genesys_get_address (regs, 0x17); + r->value = sensor_profile->r17; + + DBGCOMPLETED; +} + + +/** @brief set all registers to default values . + * This function is called only once at the beginning and + * fills register startup values for registers reused across scans. + * Those that are rarely modified or not modified are written + * individually. + * @param dev device structure holding register set to initialize + */ +static void +gl846_init_registers (Genesys_Device * dev) +{ + DBGSTART; + + dev->reg.clear(); + + SETREG (0x01,0x60); + SETREG (0x02,0x38); + SETREG (0x03,0x03); + SETREG (0x04,0x22); + SETREG (0x05,0x60); + SETREG (0x06,0x10); + SETREG (0x08,0x60); + SETREG (0x09,0x00); + SETREG (0x0a,0x00); + SETREG (0x0b,0x8b); + SETREG (0x0c,0x00); + SETREG (0x0d,0x00); + SETREG (0x10,0x00); + SETREG (0x11,0x00); + SETREG (0x12,0x00); + SETREG (0x13,0x00); + SETREG (0x14,0x00); + SETREG (0x15,0x00); + SETREG (0x16,0xbb); + SETREG (0x17,0x13); + SETREG (0x18,0x10); + SETREG (0x19,0x2a); + SETREG (0x1a,0x34); + SETREG (0x1b,0x00); + SETREG (0x1c,0x20); + SETREG (0x1d,0x06); + SETREG (0x1e,0xf0); + SETREG (0x1f,0x01); + SETREG (0x20,0x03); + SETREG (0x21,0x10); + SETREG (0x22,0x60); + SETREG (0x23,0x60); + SETREG (0x24,0x60); + SETREG (0x25,0x00); + SETREG (0x26,0x00); + SETREG (0x27,0x00); + SETREG (0x2c,0x00); + SETREG (0x2d,0x00); + SETREG (0x2e,0x80); + SETREG (0x2f,0x80); + SETREG (0x30,0x00); + SETREG (0x31,0x00); + SETREG (0x32,0x00); + SETREG (0x33,0x00); + SETREG (0x34,0x1f); + SETREG (0x35,0x00); + SETREG (0x36,0x40); + SETREG (0x37,0x00); + SETREG (0x38,0x2a); + SETREG (0x39,0xf8); + SETREG (0x3d,0x00); + SETREG (0x3e,0x00); + SETREG (0x3f,0x01); + SETREG (0x52,0x02); + SETREG (0x53,0x04); + SETREG (0x54,0x06); + SETREG (0x55,0x08); + SETREG (0x56,0x0a); + SETREG (0x57,0x00); + SETREG (0x58,0x59); + SETREG (0x59,0x31); + SETREG (0x5a,0x40); + SETREG (0x5e,0x1f); + SETREG (0x5f,0x01); + SETREG (0x60,0x00); + SETREG (0x61,0x00); + SETREG (0x62,0x00); + SETREG (0x63,0x00); + SETREG (0x64,0x00); + SETREG (0x65,0x00); + SETREG (0x67,0x7f); + SETREG (0x68,0x7f); + SETREG (0x69,0x01); + SETREG (0x6a,0x01); + SETREG (0x70,0x01); + SETREG (0x71,0x00); + SETREG (0x72,0x02); + SETREG (0x73,0x01); + SETREG (0x74,0x00); + SETREG (0x75,0x00); + SETREG (0x76,0x00); + SETREG (0x77,0x00); + SETREG (0x78,0x00); + SETREG (0x79,0x3f); + SETREG (0x7a,0x00); + SETREG (0x7b,0x09); + SETREG (0x7c,0x99); + SETREG (0x7d,0x20); + SETREG (0x7f,0x05); + SETREG (0x80,0x4f); + SETREG (0x87,0x02); + SETREG (0x94,0xff); + SETREG (0x9d,0x04); + SETREG (0x9e,0x00); + SETREG (0xa1,0xe0); + SETREG (0xa2,0x1f); + SETREG (0xab,0xc0); + SETREG (0xbb,0x00); + SETREG (0xbc,0x0f); + SETREG (0xdb,0xff); + SETREG (0xfe,0x08); + SETREG (0xff,0x02); + SETREG (0x98,0x20); + SETREG (0x99,0x00); + SETREG (0x9a,0x90); + SETREG (0x9b,0x00); + SETREG (0xf8,0x05); + + const auto& sensor = sanei_genesys_find_sensor_any(dev); + + /* fine tune upon device description */ + dev->reg.find_reg(0x05).value &= ~REG05_DPIHW; + switch (sensor.optical_res) + { + case 600: + dev->reg.find_reg(0x05).value |= REG05_DPIHW_600; + break; + case 1200: + dev->reg.find_reg(0x05).value |= REG05_DPIHW_1200; + break; + case 2400: + dev->reg.find_reg(0x05).value |= REG05_DPIHW_2400; + break; + case 4800: + dev->reg.find_reg(0x05).value |= REG05_DPIHW_4800; + break; + } + + /* initalize calibration reg */ + dev->calib_reg = dev->reg; + + DBGCOMPLETED; +} + +/**@brief send slope table for motor movement + * Send slope_table in machine byte order + * @param dev device to send slope table + * @param table_nr index of the slope table in ASIC memory + * Must be in the [0-4] range. + * @param slope_table pointer to 16 bit values array of the slope table + * @param steps number of elements in the slope table + */ +static SANE_Status +gl846_send_slope_table (Genesys_Device * dev, int table_nr, + uint16_t * slope_table, int steps) +{ + SANE_Status status = SANE_STATUS_GOOD; + int i; + char msg[10000]; + + DBG (DBG_proc, "%s (table_nr = %d, steps = %d)\n", __func__, + table_nr, steps); + + /* sanity check */ + if(table_nr<0 || table_nr>4) + { + DBG (DBG_error, "%s: invalid table number %d!\n", __func__, table_nr); + return SANE_STATUS_INVAL; + } + + std::vector<uint8_t> table(steps * 2); + for (i = 0; i < steps; i++) + { + table[i * 2] = slope_table[i] & 0xff; + table[i * 2 + 1] = slope_table[i] >> 8; + } + + if (DBG_LEVEL >= DBG_io) + { + sprintf (msg, "write slope %d (%d)=", table_nr, steps); + for (i = 0; i < steps; i++) + { + sprintf (msg+strlen(msg), "%d", slope_table[i]); + } + DBG (DBG_io, "%s: %s\n", __func__, msg); + } + + /* slope table addresses are fixed */ + status = sanei_genesys_write_ahb(dev, 0x10000000 + 0x4000 * table_nr, steps * 2, table.data()); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: write to AHB failed writing slope table %d (%s)\n", __func__, table_nr, + sane_strstatus(status)); + } + + DBGCOMPLETED; + return status; +} + +/** + * Set register values of Analog Device type frontend + * */ +static SANE_Status +gl846_set_adi_fe (Genesys_Device * dev, uint8_t set) +{ + SANE_Status status = SANE_STATUS_GOOD; + int i; + uint8_t val8; + + DBGSTART; + + /* wait for FE to be ready */ + status = sanei_genesys_get_status (dev, &val8); + while (val8 & REG41_FEBUSY) + { + sanei_genesys_sleep_ms(10); + status = sanei_genesys_get_status (dev, &val8); + }; + + if (set == AFE_INIT) + { + DBG (DBG_proc, "%s(): setting DAC %u\n", __func__, dev->model->dac_type); + dev->frontend = dev->frontend_initial; + } + + /* write them to analog frontend */ + status = sanei_genesys_fe_write_data(dev, 0x00, dev->frontend.regs.get_value(0x00)); + if (status != SANE_STATUS_GOOD) + { + DBG (DBG_error, "%s: failed to write reg0: %s\n", __func__, + sane_strstatus (status)); + return status; + } + status = sanei_genesys_fe_write_data(dev, 0x01, dev->frontend.regs.get_value(0x01)); + if (status != SANE_STATUS_GOOD) + { + DBG (DBG_error, "%s: failed to write reg1: %s\n", __func__, + sane_strstatus (status)); + return status; + } + + for (i = 0; i < 3; i++) + { + status = sanei_genesys_fe_write_data(dev, 0x02 + i, dev->frontend.get_gain(i)); + if (status != SANE_STATUS_GOOD) + { + DBG (DBG_error, + "%s: failed to write gain %d: %s\n", __func__, i, + sane_strstatus (status)); + return status; + } + } + for (i = 0; i < 3; i++) + { + status = sanei_genesys_fe_write_data(dev, 0x05 + i, dev->frontend.get_offset(i)); + if (status != SANE_STATUS_GOOD) + { + DBG (DBG_error, + "%s: failed to write offset %d: %s\n", __func__, i, + sane_strstatus (status)); + return status; + } + } + + DBGCOMPLETED; + return status; +} + +static SANE_Status +gl846_homsnr_gpio(Genesys_Device *dev) +{ +uint8_t val; +SANE_Status status=SANE_STATUS_GOOD; + + RIE (sanei_genesys_read_register (dev, REG6C, &val)); + val |= 0x41; + RIE (sanei_genesys_write_register (dev, REG6C, val)); + + return status; +} + +/* Set values of analog frontend */ +static SANE_Status +gl846_set_fe(Genesys_Device * dev, const Genesys_Sensor& sensor, uint8_t set) +{ + (void) sensor; + SANE_Status status = SANE_STATUS_GOOD; + + DBG(DBG_proc, "%s (%s)\n", __func__, set == AFE_INIT ? "init" : set == AFE_SET ? "set" : + set == AFE_POWER_SAVE ? "powersave" : "huh?"); + + /* route to specific analog frontend setup */ + switch (dev->reg.find_reg(0x04).value & REG04_FESET) + { + case 0x02: /* ADI FE */ + status = gl846_set_adi_fe(dev, set); + break; + default: + DBG(DBG_proc, "%s(): unsupported frontend type %d\n", __func__, + dev->reg.find_reg(0x04).value & REG04_FESET); + status = SANE_STATUS_UNSUPPORTED; + } + + DBGCOMPLETED; + return status; +} + + +/** @brief set up motor related register for scan + */ +static SANE_Status +gl846_init_motor_regs_scan (Genesys_Device * dev, + const Genesys_Sensor& sensor, + Genesys_Register_Set * reg, + unsigned int scan_exposure_time, + float scan_yres, + int scan_step_type, + unsigned int scan_lines, + unsigned int scan_dummy, + unsigned int feed_steps, + int scan_power_mode, + unsigned int flags) +{ + SANE_Status status = SANE_STATUS_GOOD; + int use_fast_fed; + unsigned int fast_dpi; + uint16_t scan_table[SLOPE_TABLE_SIZE]; + uint16_t fast_table[SLOPE_TABLE_SIZE]; + int scan_steps, fast_steps, factor; + unsigned int feedl, dist; + GenesysRegister *r; + uint32_t z1, z2; + unsigned int min_restep = 0x20; + uint8_t val; + int fast_step_type; + unsigned int ccdlmt,tgtime; + + DBGSTART; + DBG(DBG_proc, "%s : scan_exposure_time=%d, scan_yres=%g, scan_step_type=%d, scan_lines=%d, " + "scan_dummy=%d, feed_steps=%d, scan_power_mode=%d, flags=%x\n", __func__, scan_exposure_time, + scan_yres, scan_step_type, scan_lines, scan_dummy, feed_steps, scan_power_mode, flags); + + /* get step multiplier */ + factor = gl846_get_step_multiplier (reg); + + use_fast_fed=0; + /* no fast fed since feed works well */ + if(dev->settings.yres==4444 && feed_steps>100 + && ((flags & MOTOR_FLAG_FEED)==0)) + { + use_fast_fed=1; + } + DBG (DBG_io, "%s: use_fast_fed=%d\n", __func__, use_fast_fed); + + sanei_genesys_set_triple(reg, REG_LINCNT, scan_lines); + DBG (DBG_io, "%s: lincnt=%d\n", __func__, scan_lines); + + /* compute register 02 value */ + r = sanei_genesys_get_address (reg, REG02); + r->value = 0x00; + sanei_genesys_set_motor_power(*reg, true); + + if (use_fast_fed) + r->value |= REG02_FASTFED; + else + r->value &= ~REG02_FASTFED; + + if (flags & MOTOR_FLAG_AUTO_GO_HOME) + r->value |= REG02_AGOHOME | REG02_NOTHOME; + + if ((flags & MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE) + ||(scan_yres>=sensor.optical_res)) + { + r->value |= REG02_ACDCDIS; + } + + /* scan and backtracking slope table */ + sanei_genesys_slope_table(scan_table, + &scan_steps, + scan_yres, + scan_exposure_time, + dev->motor.base_ydpi, + scan_step_type, + factor, + dev->model->motor_type, + gl846_motors); + RIE(gl846_send_slope_table (dev, SCAN_TABLE, scan_table, scan_steps*factor)); + RIE(gl846_send_slope_table (dev, BACKTRACK_TABLE, scan_table, scan_steps*factor)); + + /* fast table */ + fast_dpi=sanei_genesys_get_lowest_ydpi(dev); + fast_step_type=scan_step_type; + if(scan_step_type>=2) + { + fast_step_type=2; + } + + sanei_genesys_slope_table(fast_table, + &fast_steps, + fast_dpi, + scan_exposure_time, + dev->motor.base_ydpi, + fast_step_type, + factor, + dev->model->motor_type, + gl846_motors); + + /* manual override of high start value */ + fast_table[0]=fast_table[1]; + + RIE(gl846_send_slope_table (dev, STOP_TABLE, fast_table, fast_steps*factor)); + RIE(gl846_send_slope_table (dev, FAST_TABLE, fast_table, fast_steps*factor)); + RIE(gl846_send_slope_table (dev, HOME_TABLE, fast_table, fast_steps*factor)); + + /* correct move distance by acceleration and deceleration amounts */ + feedl=feed_steps; + if (use_fast_fed) + { + feedl<<=fast_step_type; + dist=(scan_steps+2*fast_steps)*factor; + /* TODO read and decode REGAB */ + r = sanei_genesys_get_address (reg, 0x5e); + dist += (r->value & 31); + /* FEDCNT */ + r = sanei_genesys_get_address (reg, REG_FEDCNT); + dist += r->value; + } + else + { + feedl<<=scan_step_type; + dist=scan_steps*factor; + if (flags & MOTOR_FLAG_FEED) + dist *=2; + } + DBG (DBG_io2, "%s: scan steps=%d\n", __func__, scan_steps); + DBG (DBG_io2, "%s: acceleration distance=%d\n", __func__, dist); + + /* check for overflow */ + if(dist<feedl) + feedl -= dist; + else + feedl = 0; + + sanei_genesys_set_triple(reg,REG_FEEDL,feedl); + DBG (DBG_io ,"%s: feedl=%d\n",__func__,feedl); + + r = sanei_genesys_get_address (reg, REG0C); + ccdlmt=(r->value & REG0C_CCDLMT)+1; + + r = sanei_genesys_get_address (reg, REG1C); + tgtime=1<<(r->value & REG1C_TGTIME); + + /* hi res motor speed GPIO */ + /* + RIE (sanei_genesys_read_register (dev, REG6C, &effective)); + */ + + /* if quarter step, bipolar Vref2 */ + /* XXX STEF XXX GPIO + if (scan_step_type > 1) + { + if (scan_step_type < 3) + { + val = effective & ~REG6C_GPIO13; + } + else + { + val = effective | REG6C_GPIO13; + } + } + else + { + val = effective; + } + RIE (sanei_genesys_write_register (dev, REG6C, val)); + */ + + /* effective scan */ + /* + RIE (sanei_genesys_read_register (dev, REG6C, &effective)); + val = effective | REG6C_GPIO10; + RIE (sanei_genesys_write_register (dev, REG6C, val)); + */ + + if(dev->model->gpo_type==GPO_IMG101) + { + if(scan_yres==sanei_genesys_compute_dpihw(dev, sensor,scan_yres)) + { + val=1; + } + else + { + val=0; + } + RIE (sanei_genesys_write_register (dev, REG7E, val)); + } + + min_restep=scan_steps/2-1; + if (min_restep < 1) + min_restep = 1; + r = sanei_genesys_get_address (reg, REG_FWDSTEP); + r->value = min_restep; + r = sanei_genesys_get_address (reg, REG_BWDSTEP); + r->value = min_restep; + + sanei_genesys_calculate_zmode2(use_fast_fed, + scan_exposure_time*ccdlmt*tgtime, + scan_table, + scan_steps*factor, + feedl, + min_restep*factor, + &z1, + &z2); + + DBG(DBG_info, "%s: z1 = %d\n", __func__, z1); + sanei_genesys_set_triple(reg, REG60, z1 | (scan_step_type << (16+REG60S_STEPSEL))); + + DBG(DBG_info, "%s: z2 = %d\n", __func__, z2); + sanei_genesys_set_triple(reg, REG63, z2 | (scan_step_type << (16+REG63S_FSTPSEL))); + + r = sanei_genesys_get_address (reg, 0x1e); + r->value &= 0xf0; /* 0 dummy lines */ + r->value |= scan_dummy; /* dummy lines */ + + r = sanei_genesys_get_address (reg, REG67); + r->value = 0x7f; + + r = sanei_genesys_get_address (reg, REG68); + r->value = 0x7f; + + r = sanei_genesys_get_address (reg, REG_STEPNO); + r->value = scan_steps; + + r = sanei_genesys_get_address (reg, REG_FASTNO); + r->value = scan_steps; + + r = sanei_genesys_get_address (reg, REG_FSHDEC); + r->value = scan_steps; + + r = sanei_genesys_get_address (reg, REG_FMOVNO); + r->value = fast_steps; + + r = sanei_genesys_get_address (reg, REG_FMOVDEC); + r->value = fast_steps; + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + + +/** @brief set up registers related to sensor + * Set up the following registers + 0x01 + 0x03 + 0x10-0x015 R/G/B exposures + 0x19 EXPDMY + 0x2e BWHI + 0x2f BWLO + 0x04 + 0x87 + 0x05 + 0x2c,0x2d DPISET + 0x30,0x31 STRPIXEL + 0x32,0x33 ENDPIXEL + 0x35,0x36,0x37 MAXWD [25:2] (>>2) + 0x38,0x39 LPERIOD + 0x34 DUMMY + */ +static SANE_Status +gl846_init_optical_regs_scan (Genesys_Device * dev, + const Genesys_Sensor& sensor, + Genesys_Register_Set * reg, + unsigned int exposure_time, + int used_res, + unsigned int start, + unsigned int pixels, + int channels, + int depth, + SANE_Bool half_ccd, ColorFilter color_filter, int flags) +{ + unsigned int words_per_line; + unsigned int startx, endx, used_pixels; + unsigned int dpiset, dpihw,segnb,cksel,factor; + unsigned int bytes; + GenesysRegister *r; + SANE_Status status = SANE_STATUS_GOOD; + + DBG(DBG_proc, "%s : exposure_time=%d, used_res=%d, start=%d, pixels=%d, channels=%d, depth=%d, " + "half_ccd=%d, flags=%x\n", __func__, exposure_time, used_res, start, pixels, channels, depth, + half_ccd, flags); + + /* resolution is divided according to CKSEL */ + r = sanei_genesys_get_address (reg, REG18); + cksel= (r->value & REG18_CKSEL)+1; + DBG(DBG_io2, "%s: cksel=%d\n", __func__, cksel); + + /* to manage high resolution device while keeping good + * low resolution scanning speed, we make hardware dpi vary */ + dpihw=sanei_genesys_compute_dpihw(dev, sensor, used_res * cksel); + factor=sensor.optical_res/dpihw; + DBG(DBG_io2, "%s: dpihw=%d (factor=%d)\n", __func__, dpihw, factor); + + /* sensor parameters */ + Sensor_Profile* sensor_profile = get_sensor_profile(dev->model->ccd_type, dpihw); + gl846_setup_sensor(dev, sensor, reg, dpihw); + dpiset = used_res * cksel; + + /* start and end coordinate in optical dpi coordinates */ + startx = start/cksel+sensor.CCD_start_xoffset; + used_pixels=pixels/cksel; + + /* end of sensor window */ + endx = startx + used_pixels; + + /* sensors are built from 600 dpi segments for LiDE 100/200 + * and 1200 dpi for the 700F */ + if (dev->model->flags & GENESYS_FLAG_SIS_SENSOR) + { + segnb=dpihw/600; + } + else + { + segnb=1; + } + + /* compute pixel coordinate in the given dpihw space, + * taking segments into account */ + startx/=factor*segnb; + endx/=factor*segnb; + dev->len=endx-startx; + dev->dist=0; + dev->skip=0; + + /* in cas of multi-segments sensor, we have to add the witdh + * of the sensor crossed by the scan area */ + if (dev->model->flags & GENESYS_FLAG_SIS_SENSOR && segnb>1) + { + dev->dist = sensor_profile->segcnt; + } + + /* use a segcnt rounded to next even number */ + endx += ((dev->dist+1)&0xfffe)*(segnb-1); + used_pixels=endx-startx; + + status = gl846_set_fe(dev, sensor, AFE_SET); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to set frontend: %s\n", __func__, sane_strstatus(status)); + return status; + } + + /* enable shading */ + r = sanei_genesys_get_address (reg, REG01); + r->value &= ~REG01_SCAN; + r->value |= REG01_SHDAREA; + if ((flags & OPTICAL_FLAG_DISABLE_SHADING) || + (dev->model->flags & GENESYS_FLAG_NO_CALIBRATION)) + { + r->value &= ~REG01_DVDSET; + } + else + { + r->value |= REG01_DVDSET; + } + + r = sanei_genesys_get_address (reg, REG03); + r->value &= ~REG03_AVEENB; + + sanei_genesys_set_lamp_power(dev, sensor, *reg, !(flags & OPTICAL_FLAG_DISABLE_LAMP)); + + /* BW threshold */ + r = sanei_genesys_get_address (reg, 0x2e); + r->value = dev->settings.threshold; + r = sanei_genesys_get_address (reg, 0x2f); + r->value = dev->settings.threshold; + + /* monochrome / color scan */ + r = sanei_genesys_get_address (reg, REG04); + switch (depth) + { + case 1: + r->value &= ~REG04_BITSET; + r->value |= REG04_LINEART; + break; + case 8: + r->value &= ~(REG04_LINEART | REG04_BITSET); + break; + case 16: + r->value &= ~REG04_LINEART; + r->value |= REG04_BITSET; + break; + } + + r->value &= ~(REG04_FILTER | REG04_AFEMOD); + if (channels == 1) + { + switch (color_filter) + { + case ColorFilter::RED: + r->value |= 0x24; + break; + case ColorFilter::BLUE: + r->value |= 0x2c; + break; + case ColorFilter::GREEN: + r->value |= 0x28; + break; + default: + break; // should not happen + } + } + else + r->value |= 0x20; /* mono */ + + /* register 05 */ + r = sanei_genesys_get_address (reg, REG05); + + /* set up dpihw */ + r->value &= ~REG05_DPIHW; + switch(dpihw) + { + case 600: + r->value |= REG05_DPIHW_600; + break; + case 1200: + r->value |= REG05_DPIHW_1200; + break; + case 2400: + r->value |= REG05_DPIHW_2400; + break; + case 4800: + r->value |= REG05_DPIHW_4800; + break; + } + + /* enable gamma tables */ + if (flags & OPTICAL_FLAG_DISABLE_GAMMA) + r->value &= ~REG05_GMMENB; + else + r->value |= REG05_GMMENB; + + /* CIS scanners can do true gray by setting LEDADD */ + /* we set up LEDADD only when asked */ + if (dev->model->is_cis == SANE_TRUE) + { + r = sanei_genesys_get_address (reg, 0x87); + r->value &= ~REG87_LEDADD; + if (channels == 1 && (flags & OPTICAL_FLAG_ENABLE_LEDADD)) + { + r->value |= REG87_LEDADD; + } + /* RGB weighting + r = sanei_genesys_get_address (reg, 0x01); + r->value &= ~REG01_TRUEGRAY; + if (channels == 1 && (flags & OPTICAL_FLAG_ENABLE_LEDADD)) + { + r->value |= REG01_TRUEGRAY; + }*/ + } + + /* words(16bit) before gamma, conversion to 8 bit or lineart*/ + words_per_line = (used_pixels * dpiset) / dpihw; + bytes=depth/8; + if (depth == 1) + { + words_per_line = (words_per_line+7)/8 ; + dev->len = (dev->len >> 3) + ((dev->len & 7) ? 1 : 0); + dev->dist = (dev->dist >> 3) + ((dev->dist & 7) ? 1 : 0); + } + else + { + words_per_line *= bytes; + dev->dist *= bytes; + dev->len *= bytes; + } + + dev->bpl = words_per_line; + dev->cur=0; + dev->segnb=segnb; + dev->line_interp = 0; + + sanei_genesys_set_double(reg,REG_DPISET,dpiset); + DBG (DBG_io2, "%s: dpiset used=%d\n", __func__, dpiset); + + sanei_genesys_set_double(reg,REG_STRPIXEL,startx); + sanei_genesys_set_double(reg,REG_ENDPIXEL,endx); + DBG (DBG_io2, "%s: startx=%d\n", __func__, startx); + DBG (DBG_io2, "%s: endx =%d\n", __func__, endx); + + DBG (DBG_io2, "%s: used_pixels=%d\n", __func__, used_pixels); + DBG (DBG_io2, "%s: pixels =%d\n", __func__, pixels); + DBG (DBG_io2, "%s: depth =%d\n", __func__, depth); + DBG (DBG_io2, "%s: dev->bpl =%lu\n", __func__, (unsigned long)dev->bpl); + DBG (DBG_io2, "%s: dev->len =%lu\n", __func__, (unsigned long)dev->len); + DBG (DBG_io2, "%s: dev->dist =%lu\n", __func__, (unsigned long)dev->dist); + DBG (DBG_io2, "%s: dev->segnb =%lu\n", __func__, (unsigned long)dev->segnb); + + words_per_line *= channels; + dev->wpl = words_per_line; + + dev->oe_buffer.clear(); + dev->oe_buffer.alloc(dev->wpl); + + /* MAXWD is expressed in 4 words unit */ + sanei_genesys_set_triple(reg, REG_MAXWD, (words_per_line >> 2)); + DBG (DBG_io2, "%s: words_per_line used=%d\n", __func__, words_per_line); + + sanei_genesys_set_double(reg, REG_LPERIOD, exposure_time); + DBG (DBG_io2, "%s: exposure_time used=%d\n", __func__, exposure_time); + + r = sanei_genesys_get_address (reg, 0x34); + r->value = sensor.dummy_pixel; + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + +/* set up registers for an actual scan + * + * this function sets up the scanner to scan in normal or single line mode + */ +static SANE_Status +gl846_init_scan_regs(Genesys_Device * dev, const Genesys_Sensor& sensor, Genesys_Register_Set * reg, + SetupParams& params) +{ + params.assert_valid(); + + int used_res; + int start, used_pixels; + int bytes_per_line; + int move; + unsigned int lincnt; + unsigned int oflags; /**> optical flags */ + unsigned int mflags; /**> motor flags */ + int exposure_time; + int stagger; + + int slope_dpi = 0; + int dummy = 0; + int scan_step_type = 1; + int scan_power_mode = 0; + int max_shift; + size_t requested_buffer_size, read_buffer_size; + + SANE_Bool half_ccd; /* false: full CCD res is used, true, half max CCD res is used */ + int optical_res; + SANE_Status status = SANE_STATUS_GOOD; + + DBG(DBG_info, "%s ", __func__); + debug_dump(DBG_info, params); + + /* we may have 2 domains for ccd: xres below or above half ccd max dpi */ + if (sensor.get_ccd_size_divisor_for_dpi(params.xres) > 1) + { + half_ccd = SANE_TRUE; + } + else + { + half_ccd = SANE_FALSE; + } + + /* optical_res */ + optical_res = sensor.optical_res; + if (half_ccd) + optical_res /= 2; + + /* stagger */ + if ((!half_ccd) && (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE)) + stagger = (4 * params.yres) / dev->motor.base_ydpi; + else + stagger = 0; + DBG(DBG_info, "%s : stagger=%d lines\n", __func__, stagger); + + /* used_res */ + if (params.flags & SCAN_FLAG_USE_OPTICAL_RES) + { + used_res = optical_res; + } + else + { + /* resolution is choosen from a list */ + used_res = params.xres; + } + + /* compute scan parameters values */ + /* pixels are allways given at full optical resolution */ + /* use detected left margin and fixed value */ + /* start */ + /* add x coordinates */ + start = params.startx; + + if (stagger > 0) + start |= 1; + + /* compute correct pixels number */ + /* pixels */ + used_pixels = (params.pixels * optical_res) / params.xres; + + /* round up pixels number if needed */ + if (used_pixels * params.xres < params.pixels * optical_res) + used_pixels++; + + dummy = 3-params.channels; + +/* slope_dpi */ +/* cis color scan is effectively a gray scan with 3 gray lines per color + line and a FILTER of 0 */ + if (dev->model->is_cis) + slope_dpi = params.yres * params.channels; + else + slope_dpi = params.yres; + + slope_dpi = slope_dpi * (1 + dummy); + + exposure_time = gl846_compute_exposure (dev, used_res); + scan_step_type = sanei_genesys_compute_step_type(gl846_motors, dev->model->motor_type, exposure_time); + + DBG(DBG_info, "%s : exposure_time=%d pixels\n", __func__, exposure_time); + DBG(DBG_info, "%s : scan_step_type=%d\n", __func__, scan_step_type); + +/*** optical parameters ***/ + /* in case of dynamic lineart, we use an internal 8 bit gray scan + * to generate 1 lineart data */ + if (params.flags & SCAN_FLAG_DYNAMIC_LINEART) { + params.depth = 8; + } + + /* we enable true gray for cis scanners only, and just when doing + * scan since color calibration is OK for this mode + */ + oflags = 0; + if(params.flags & SCAN_FLAG_DISABLE_SHADING) + oflags |= OPTICAL_FLAG_DISABLE_SHADING; + if(params.flags & SCAN_FLAG_DISABLE_GAMMA) + oflags |= OPTICAL_FLAG_DISABLE_GAMMA; + if(params.flags & SCAN_FLAG_DISABLE_LAMP) + oflags |= OPTICAL_FLAG_DISABLE_LAMP; + + if (dev->model->is_cis && dev->settings.true_gray) + { + oflags |= OPTICAL_FLAG_ENABLE_LEDADD; + } + + status = gl846_init_optical_regs_scan (dev, sensor, + reg, + exposure_time, + used_res, + start, + used_pixels, + params.channels, + params.depth, + half_ccd, + params.color_filter, + oflags); + + if (status != SANE_STATUS_GOOD) + return status; + +/*** motor parameters ***/ + + /* max_shift */ + max_shift=sanei_genesys_compute_max_shift(dev,params.channels,params.yres,params.flags); + + /* lincnt */ + lincnt = params.lines + max_shift + stagger; + + /* add tl_y to base movement */ + move = params.starty; + DBG(DBG_info, "%s: move=%d steps\n", __func__, move); + + mflags=0; + if(params.flags & SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE) + mflags |= MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE; + if(params.flags & SCAN_FLAG_FEEDING) + mflags |= MOTOR_FLAG_FEED; + + status = gl846_init_motor_regs_scan (dev, sensor, + reg, + exposure_time, + slope_dpi, + scan_step_type, + dev->model->is_cis ? lincnt * + params.channels : lincnt, dummy, move, + scan_power_mode, + mflags); + + if (status != SANE_STATUS_GOOD) + return status; + + + /*** prepares data reordering ***/ + +/* words_per_line */ + bytes_per_line = (used_pixels * used_res) / optical_res; + bytes_per_line = (bytes_per_line * params.channels * params.depth) / 8; + + requested_buffer_size = 8 * bytes_per_line; + + read_buffer_size = + 2 * requested_buffer_size + + ((max_shift + stagger) * used_pixels * params.channels * params.depth) / 8; + + dev->read_buffer.clear(); + dev->read_buffer.alloc(read_buffer_size); + + dev->lines_buffer.clear(); + dev->lines_buffer.alloc(read_buffer_size); + + dev->shrink_buffer.clear(); + dev->shrink_buffer.alloc(requested_buffer_size); + + dev->out_buffer.clear(); + dev->out_buffer.alloc((8 * params.pixels * params.channels * params.depth) / 8); + + dev->read_bytes_left = bytes_per_line * lincnt; + + DBG(DBG_info, "%s: physical bytes to read = %lu\n", __func__, (u_long) dev->read_bytes_left); + dev->read_active = SANE_TRUE; + + dev->current_setup.params = params; + dev->current_setup.pixels = (used_pixels * used_res) / optical_res; + dev->current_setup.lines = lincnt; + dev->current_setup.depth = params.depth; + dev->current_setup.channels = params.channels; + dev->current_setup.exposure_time = exposure_time; + dev->current_setup.xres = used_res; + dev->current_setup.yres = params.yres; + dev->current_setup.ccd_size_divisor = half_ccd ? 2 : 1; + dev->current_setup.stagger = stagger; + dev->current_setup.max_shift = max_shift + stagger; + +/* TODO: should this be done elsewhere? */ + /* scan bytes to send to the frontend */ + /* theory : + target_size = + (params.pixels * params.lines * channels * depth) / 8; + but it suffers from integer overflow so we do the following: + + 1 bit color images store color data byte-wise, eg byte 0 contains + 8 bits of red data, byte 1 contains 8 bits of green, byte 2 contains + 8 bits of blue. + This does not fix the overflow, though. + 644mp*16 = 10gp, leading to an overflow + -- pierre + */ + + dev->total_bytes_read = 0; + if (params.depth == 1) + dev->total_bytes_to_read = + ((params.pixels * params.lines) / 8 + + (((params.pixels * params.lines) % 8) ? 1 : 0)) * + params.channels; + else + dev->total_bytes_to_read = + params.pixels * params.lines * params.channels * (params.depth / 8); + + DBG(DBG_info, "%s: total bytes to send = %lu\n", __func__, (u_long) dev->total_bytes_to_read); +/* END TODO */ + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + +static void +gl846_calculate_current_setup(Genesys_Device * dev, const Genesys_Sensor& sensor) +{ + int channels; + int depth; + int start; + + int used_res; + int used_pixels; + unsigned int lincnt; + int exposure_time; + int stagger; + + int slope_dpi; + int dummy = 0; + int max_shift; + + SANE_Bool half_ccd; /* false: full CCD res is used, true, half max CCD res is used */ + int optical_res; + + DBG(DBG_info, "%s ", __func__); + debug_dump(DBG_info, dev->settings); + + /* channels */ + if (dev->settings.scan_mode == ScanColorMode::COLOR_SINGLE_PASS) + channels = 3; + else + channels = 1; + + /* depth */ + depth = dev->settings.depth; + if (dev->settings.scan_mode == ScanColorMode::LINEART) + depth = 1; + + /* start */ + start = SANE_UNFIX (dev->model->x_offset); + start += dev->settings.tl_x; + start = (start * sensor.optical_res) / MM_PER_INCH; + + + SetupParams params; + params.xres = dev->settings.xres; + params.yres = dev->settings.yres; + params.startx = start; // not used + params.starty = 0; // not used + params.pixels = dev->settings.pixels; + params.lines = dev->settings.lines; + params.depth = depth; + params.channels = channels; + params.scan_method = dev->settings.scan_method; + params.scan_mode = dev->settings.scan_mode; + params.color_filter = dev->settings.color_filter; + params.flags = 0; + + DBG(DBG_info, "%s ", __func__); + debug_dump(DBG_info, params); + +/* half_ccd */ + /* we have 2 domains for ccd: xres below or above half ccd max dpi */ + if (sensor.get_ccd_size_divisor_for_dpi(params.xres) > 1) { + half_ccd = SANE_TRUE; + } else { + half_ccd = SANE_FALSE; + } + + /* optical_res */ + optical_res = sensor.optical_res; + + /* stagger */ + if (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE) + stagger = (4 * params.yres) / dev->motor.base_ydpi; + else + stagger = 0; + DBG(DBG_info, "%s: stagger=%d lines\n", __func__, stagger); + + /* resolution is choosen from a fixed list */ + used_res = params.xres; + + /* compute scan parameters values */ + /* pixels are allways given at half or full CCD optical resolution */ + /* use detected left margin and fixed value */ + + /* compute correct pixels number */ + used_pixels = (params.pixels * optical_res) / used_res; + dummy = 3 - params.channels; + + /* cis color scan is effectively a gray scan with 3 gray lines per color + line and a FILTER of 0 */ + if (dev->model->is_cis) { + slope_dpi = params.yres * params.channels; + } else { + slope_dpi = params.yres; + } + + slope_dpi = slope_dpi * (1 + dummy); + + exposure_time = gl846_compute_exposure (dev, used_res); + DBG(DBG_info, "%s : exposure_time=%d pixels\n", __func__, exposure_time); + + max_shift = sanei_genesys_compute_max_shift(dev, params.channels, params.yres, 0); + + /* lincnt */ + lincnt = params.lines + max_shift + stagger; + + dev->current_setup.params = params; + dev->current_setup.pixels = (used_pixels * used_res) / optical_res; + dev->current_setup.lines = lincnt; + dev->current_setup.depth = params.depth; + dev->current_setup.channels = params.channels; + dev->current_setup.exposure_time = exposure_time; + dev->current_setup.xres = used_res; + dev->current_setup.yres = params.yres; + dev->current_setup.ccd_size_divisor = half_ccd ? 2 : 1; + dev->current_setup.stagger = stagger; + dev->current_setup.max_shift = max_shift + stagger; + + DBGCOMPLETED; +} + +/*for fast power saving methods only, like disabling certain amplifiers*/ +static SANE_Status +gl846_save_power (Genesys_Device * dev, SANE_Bool enable) +{ + DBG(DBG_proc, "%s: enable = %d\n", __func__, enable); + if (dev == NULL) + return SANE_STATUS_INVAL; + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + +static SANE_Status +gl846_set_powersaving (Genesys_Device * dev, int delay /* in minutes */ ) +{ + DBG(DBG_proc, "%s (delay = %d)\n", __func__, delay); + if (dev == NULL) + return SANE_STATUS_INVAL; + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + +static SANE_Status +gl846_start_action (Genesys_Device * dev) +{ + return sanei_genesys_write_register (dev, 0x0f, 0x01); +} + +static SANE_Status +gl846_stop_action (Genesys_Device * dev) +{ + SANE_Status status = SANE_STATUS_GOOD; + uint8_t val40, val; + unsigned int loop; + + DBGSTART; + + /* post scan gpio : without that HOMSNR is unreliable */ + gl846_homsnr_gpio(dev); + status = sanei_genesys_get_status (dev, &val); + if (DBG_LEVEL >= DBG_io) + { + sanei_genesys_print_status (val); + } + + status = sanei_genesys_read_register (dev, REG40, &val40); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__, sane_strstatus(status)); + DBGCOMPLETED; + return status; + } + + /* only stop action if needed */ + if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG)) + { + DBG(DBG_info, "%s: already stopped\n", __func__); + DBGCOMPLETED; + return SANE_STATUS_GOOD; + } + + /* ends scan */ + val = dev->reg.get8(REG01); + val &= ~REG01_SCAN; + dev->reg.set8(REG01, val); + status = sanei_genesys_write_register (dev, REG01, val); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to write register 01: %s\n", __func__, sane_strstatus(status)); + return status; + } + sanei_genesys_sleep_ms(100); + + loop = 10; + while (loop > 0) + { + status = sanei_genesys_get_status (dev, &val); + if (DBG_LEVEL >= DBG_io) + { + sanei_genesys_print_status (val); + } + status = sanei_genesys_read_register (dev, REG40, &val40); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__, sane_strstatus(status)); + DBGCOMPLETED; + return status; + } + + /* if scanner is in command mode, we are done */ + if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG) + && !(val & REG41_MOTORENB)) + { + DBGCOMPLETED; + return SANE_STATUS_GOOD; + } + + sanei_genesys_sleep_ms(100); + loop--; + } + + DBGCOMPLETED; + return SANE_STATUS_IO_ERROR; +} + +/* Send the low-level scan command */ +static SANE_Status +gl846_begin_scan (Genesys_Device * dev, const Genesys_Sensor& sensor, Genesys_Register_Set * reg, + SANE_Bool start_motor) +{ + (void) sensor; + SANE_Status status = SANE_STATUS_GOOD; + uint8_t val; + GenesysRegister *r; + + DBGSTART; + + /* XXX STEF XXX SCAN GPIO */ + /* + RIE (sanei_genesys_read_register (dev, REG6C, &val)); + RIE (sanei_genesys_write_register (dev, REG6C, val)); + */ + + val = REG0D_CLRLNCNT; + RIE (sanei_genesys_write_register (dev, REG0D, val)); + val = REG0D_CLRMCNT; + RIE (sanei_genesys_write_register (dev, REG0D, val)); + + RIE (sanei_genesys_read_register (dev, REG01, &val)); + val |= REG01_SCAN; + RIE (sanei_genesys_write_register (dev, REG01, val)); + r = sanei_genesys_get_address (reg, REG01); + r->value = val; + + if (start_motor) + { + RIE (sanei_genesys_write_register (dev, REG0F, 1)); + } + else + { + RIE (sanei_genesys_write_register (dev, REG0F, 0)); + } + + DBGCOMPLETED; + + return status; +} + + +/* Send the stop scan command */ +static SANE_Status +gl846_end_scan (Genesys_Device * dev, Genesys_Register_Set * reg, + SANE_Bool check_stop) +{ + SANE_Status status = SANE_STATUS_GOOD; + + DBG(DBG_proc, "%s (check_stop = %d)\n", __func__, check_stop); + if (reg == NULL) + return SANE_STATUS_INVAL; + + if (dev->model->is_sheetfed == SANE_TRUE) + { + status = SANE_STATUS_GOOD; + } + else /* flat bed scanners */ + { + status = gl846_stop_action (dev); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to stop: %s\n", __func__, sane_strstatus(status)); + return status; + } + } + + DBGCOMPLETED; + return status; +} + +/* Moves the slider to the home (top) postion slowly */ +static SANE_Status +gl846_slow_back_home (Genesys_Device * dev, SANE_Bool wait_until_home) +{ + Genesys_Register_Set local_reg; + SANE_Status status = SANE_STATUS_GOOD; + GenesysRegister *r; + float resolution; + uint8_t val; + int loop = 0; + ScanColorMode scan_mode; + + DBG(DBG_proc, "%s (wait_until_home = %d)\n", __func__, wait_until_home); + + /* post scan gpio : without that HOMSNR is unreliable */ + gl846_homsnr_gpio(dev); + + /* first read gives HOME_SENSOR true */ + status = sanei_genesys_get_status (dev, &val); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__, sane_strstatus(status)); + return status; + } + if (DBG_LEVEL >= DBG_io) + { + sanei_genesys_print_status (val); + } + sanei_genesys_sleep_ms(100); + + /* second is reliable */ + status = sanei_genesys_get_status (dev, &val); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__, sane_strstatus(status)); + return status; + } + if (DBG_LEVEL >= DBG_io) + { + sanei_genesys_print_status (val); + } + + /* is sensor at home? */ + if (val & HOMESNR) + { + DBG(DBG_info, "%s: already at home, completed\n", __func__); + dev->scanhead_position_in_steps = 0; + DBGCOMPLETED; + return SANE_STATUS_GOOD; + } + + local_reg = dev->reg; + + resolution=sanei_genesys_get_lowest_ydpi(dev); + + const auto& sensor = sanei_genesys_find_sensor_any(dev); + + /* TODO add scan_mode to the API */ + scan_mode= dev->settings.scan_mode; + dev->settings.scan_mode = ScanColorMode::LINEART; + + SetupParams params; + params.xres = resolution; + params.yres = resolution; + params.startx = 100; + params.starty = 30000; + params.pixels = 100; + params.lines = 100; + params.depth = 8; + params.channels = 1; + params.scan_method = dev->settings.scan_method; + params.scan_mode = ScanColorMode::GRAY; + params.color_filter = ColorFilter::RED; + params.flags = SCAN_FLAG_DISABLE_SHADING | + SCAN_FLAG_DISABLE_GAMMA | + SCAN_FLAG_IGNORE_LINE_DISTANCE; + + status = gl846_init_scan_regs(dev, sensor, &local_reg, params); + + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to set up registers: %s\n", __func__, sane_strstatus(status)); + DBGCOMPLETED; + return status; + } + dev->settings.scan_mode=scan_mode; + + /* clear scan and feed count */ + RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT | REG0D_CLRMCNT)); + + /* set up for reverse */ + r = sanei_genesys_get_address(&local_reg, REG02); + r->value |= REG02_MTRREV; + + RIE (dev->model->cmd_set->bulk_write_register(dev, local_reg)); + + try { + status = gl846_start_action(dev); + } catch (...) { + DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status)); + try { + gl846_stop_action(dev); + } catch (...) {} + try { + // restore original registers + dev->model->cmd_set->bulk_write_register(dev, dev->reg); + } catch (...) {} + throw; + } + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status)); + gl846_stop_action (dev); + /* send original registers */ + dev->model->cmd_set->bulk_write_register(dev, dev->reg); + return status; + } + + /* post scan gpio : without that HOMSNR is unreliable */ + gl846_homsnr_gpio(dev); + + if (wait_until_home) + { + while (loop < 300) /* do not wait longer then 30 seconds */ + { + status = sanei_genesys_get_status (dev, &val); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to read home sensor: %s\n", __func__, + sane_strstatus(status)); + return status; + } + + if (val & HOMESNR) /* home sensor */ + { + DBG(DBG_info, "%s: reached home position\n", __func__); + gl846_stop_action (dev); + dev->scanhead_position_in_steps = 0; + DBGCOMPLETED; + return SANE_STATUS_GOOD; + } + sanei_genesys_sleep_ms(100); + ++loop; + } + + /* when we come here then the scanner needed too much time for this, so we better stop the motor */ + gl846_stop_action (dev); + DBG(DBG_error, "%s: timeout while waiting for scanhead to go home\n", __func__); + return SANE_STATUS_IO_ERROR; + } + + DBG(DBG_info, "%s: scanhead is still moving\n", __func__); + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + +/* Automatically set top-left edge of the scan area by scanning a 200x200 pixels + area at 600 dpi from very top of scanner */ +static SANE_Status +gl846_search_start_position (Genesys_Device * dev) +{ + int size; + SANE_Status status = SANE_STATUS_GOOD; + Genesys_Register_Set local_reg; + int steps; + + int pixels = 600; + int dpi = 300; + + DBG(DBG_proc, "%s\n", __func__); + + local_reg = dev->reg; + + /* sets for a 200 lines * 600 pixels */ + /* normal scan with no shading */ + + // FIXME: the current approach of doing search only for one resolution does not work on scanners + // whith employ different sensors with potentially different settings. + auto& sensor = sanei_genesys_find_sensor_for_write(dev, dpi); + + SetupParams params; + params.xres = dpi; + params.yres = dpi; + params.startx = 0; + params.starty = 0; /*we should give a small offset here~60 steps */ + params.pixels = 600; + params.lines = dev->model->search_lines; + params.depth = 8; + params.channels = 1; + params.scan_method = dev->settings.scan_method; + params.scan_mode = ScanColorMode::GRAY; + params.color_filter = ColorFilter::GREEN; + params.flags = SCAN_FLAG_DISABLE_SHADING | + SCAN_FLAG_DISABLE_GAMMA | + SCAN_FLAG_IGNORE_LINE_DISTANCE; + + status = gl846_init_scan_regs(dev, sensor, &local_reg, params); + + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to set up registers: %s\n", __func__, sane_strstatus(status)); + DBGCOMPLETED; + return status; + } + + /* send to scanner */ + status = dev->model->cmd_set->bulk_write_register(dev, local_reg); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to bulk write registers: %s\n", __func__, sane_strstatus(status)); + DBGCOMPLETED; + return status; + } + + size = pixels * dev->model->search_lines; + + std::vector<uint8_t> data(size); + + status = gl846_begin_scan(dev, sensor, &local_reg, SANE_TRUE); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to begin scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + + /* waits for valid data */ + do + sanei_genesys_test_buffer_empty (dev, &steps); + while (steps); + + /* now we're on target, we can read data */ + status = sanei_genesys_read_data_from_scanner(dev, data.data(), size); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to read data: %s\n", __func__, sane_strstatus(status)); + return status; + } + + if (DBG_LEVEL >= DBG_data) + sanei_genesys_write_pnm_file("gl846_search_position.pnm", data.data(), 8, 1, pixels, + dev->model->search_lines); + + status = gl846_end_scan (dev, &local_reg, SANE_TRUE); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to end scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + + /* update regs to copy ASIC internal state */ + dev->reg = local_reg; + +/*TODO: find out where sanei_genesys_search_reference_point + stores information, and use that correctly*/ + status = + sanei_genesys_search_reference_point (dev, sensor, data.data(), 0, dpi, pixels, + dev->model->search_lines); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to set search reference point: %s\n", __func__, + sane_strstatus(status)); + return status; + } + + return SANE_STATUS_GOOD; +} + +/* + * sets up register for coarse gain calibration + * todo: check it for scanners using it */ +static SANE_Status +gl846_init_regs_for_coarse_calibration(Genesys_Device * dev, const Genesys_Sensor& sensor, + Genesys_Register_Set& regs) +{ + SANE_Status status = SANE_STATUS_GOOD; + uint8_t channels; + uint8_t cksel; + + DBG(DBG_proc, "%s\n", __func__); + + + cksel = (regs.find_reg(0x18).value & REG18_CKSEL) + 1; /* clock speed = 1..4 clocks */ + + /* set line size */ + if (dev->settings.scan_mode == ScanColorMode::COLOR_SINGLE_PASS) + channels = 3; + else { + channels = 1; + } + + SetupParams params; + params.xres = dev->settings.xres; + params.yres = dev->settings.yres; + params.startx = 0; + params.starty = 0; + params.pixels = sensor.optical_res / cksel; + params.lines = 20; + params.depth = 16; + params.channels = channels; + params.scan_method = dev->settings.scan_method; + params.scan_mode = dev->settings.scan_mode; + params.color_filter = dev->settings.color_filter; + params.flags = SCAN_FLAG_DISABLE_SHADING | + SCAN_FLAG_DISABLE_GAMMA | + SCAN_FLAG_SINGLE_LINE | + SCAN_FLAG_IGNORE_LINE_DISTANCE; + + status = gl846_init_scan_regs(dev, sensor, ®s, params); + + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: Failed to setup scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + + DBG(DBG_info, "%s: optical sensor res: %d dpi, actual res: %d\n", __func__, + sensor.optical_res / cksel, dev->settings.xres); + + status = dev->model->cmd_set->bulk_write_register(dev, regs); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: Failed to bulk write registers: %s\n", __func__, sane_strstatus(status)); + return status; + } + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + +/** @brief moves the slider to steps at motor base dpi + * @param dev device to work on + * @param steps number of steps to move in base_dpi line count + * */ +static SANE_Status +gl846_feed (Genesys_Device * dev, unsigned int steps) +{ + Genesys_Register_Set local_reg; + SANE_Status status = SANE_STATUS_GOOD; + GenesysRegister *r; + float resolution; + uint8_t val; + + DBGSTART; + DBG(DBG_io, "%s: steps=%d\n", __func__, steps); + + /* prepare local registers */ + local_reg = dev->reg; + + resolution=sanei_genesys_get_lowest_ydpi(dev); + const auto& sensor = sanei_genesys_find_sensor(dev, resolution); + + SetupParams params; + params.xres = resolution; + params.yres = resolution; + params.startx = 0; + params.starty = steps; + params.pixels = 100; + params.lines = 3; + params.depth = 8; + params.channels = 3; + params.scan_method = dev->settings.scan_method; + params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS; + params.color_filter = dev->settings.color_filter; + params.flags = SCAN_FLAG_DISABLE_SHADING | + SCAN_FLAG_DISABLE_GAMMA | + SCAN_FLAG_FEEDING | + SCAN_FLAG_IGNORE_LINE_DISTANCE; + + status = gl846_init_scan_regs(dev, sensor, &local_reg, params); + + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to set up registers: %s\n", __func__, sane_strstatus(status)); + DBGCOMPLETED; + return status; + } + + /* set exposure to zero */ + sanei_genesys_set_triple(&local_reg,REG_EXPR,0); + sanei_genesys_set_triple(&local_reg,REG_EXPG,0); + sanei_genesys_set_triple(&local_reg,REG_EXPB,0); + + /* clear scan and feed count */ + RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT)); + RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRMCNT)); + + /* set up for no scan */ + r = sanei_genesys_get_address(&local_reg, REG01); + r->value &= ~REG01_SCAN; + + /* send registers */ + RIE (dev->model->cmd_set->bulk_write_register(dev, local_reg)); + + try { + status = gl846_start_action (dev); + } catch (...) { + DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status)); + try { + gl846_stop_action(dev); + } catch (...) {} + try { + // restore original registers + dev->model->cmd_set->bulk_write_register(dev, dev->reg); + } catch (...) {} + throw; + } + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to start motor: %s\n", __func__, sane_strstatus(status)); + gl846_stop_action (dev); + + /* restore original registers */ + dev->model->cmd_set->bulk_write_register(dev, dev->reg); + return status; + } + + /* wait until feed count reaches the required value, but do not + * exceed 30s */ + do + { + status = sanei_genesys_get_status (dev, &val); + } + while (status == SANE_STATUS_GOOD && !(val & FEEDFSH)); + + /* then stop scanning */ + RIE(gl846_stop_action (dev)); + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + + +/* init registers for shading calibration */ +static SANE_Status +gl846_init_regs_for_shading(Genesys_Device * dev, const Genesys_Sensor& sensor, + Genesys_Register_Set& regs) +{ + SANE_Status status = SANE_STATUS_GOOD; + float move; + + DBGSTART; + dev->calib_channels = 3; + + /* initial calibration reg values */ + regs = dev->reg; + + dev->calib_resolution = sanei_genesys_compute_dpihw(dev, sensor, dev->settings.xres); + dev->calib_total_bytes_to_read = 0; + dev->calib_lines = dev->model->shading_lines; + if(dev->calib_resolution==4800) + dev->calib_lines *= 2; + dev->calib_pixels = (sensor.sensor_pixels*dev->calib_resolution)/sensor.optical_res; + DBG(DBG_io, "%s: calib_lines = %d\n", __func__, (unsigned int)dev->calib_lines); + DBG(DBG_io, "%s: calib_pixels = %d\n", __func__, (unsigned int)dev->calib_pixels); + + /* this is aworkaround insufficent distance for slope + * motor acceleration TODO special motor slope for shading */ + move=1; + if(dev->calib_resolution<1200) + { + move=40; + } + + SetupParams params; + params.xres = dev->calib_resolution; + params.yres = dev->calib_resolution; + params.startx = 0; + params.starty = move; + params.pixels = dev->calib_pixels; + params.lines = dev->calib_lines; + params.depth = 16; + params.channels = dev->calib_channels; + params.scan_method = dev->settings.scan_method; + params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS; + params.color_filter = dev->settings.color_filter; + params.flags = SCAN_FLAG_DISABLE_SHADING | + SCAN_FLAG_DISABLE_GAMMA | + SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE | + SCAN_FLAG_IGNORE_LINE_DISTANCE; + + status = gl846_init_scan_regs(dev, sensor, ®s, params); + + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + + status = dev->model->cmd_set->bulk_write_register(dev, regs); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to bulk write registers: %s\n", __func__, sane_strstatus(status)); + return status; + } + + /* we use GENESYS_FLAG_SHADING_REPARK */ + dev->scanhead_position_in_steps = 0; + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + +/** @brief set up registers for the actual scan + */ +static SANE_Status +gl846_init_regs_for_scan (Genesys_Device * dev, const Genesys_Sensor& sensor) +{ + int channels; + int flags; + int depth; + float move; + int move_dpi; + float start; + + SANE_Status status = SANE_STATUS_GOOD; + + DBG(DBG_info, "%s ", __func__); + debug_dump(DBG_info, dev->settings); + + /* channels */ + if (dev->settings.scan_mode == ScanColorMode::COLOR_SINGLE_PASS) + channels = 3; + else + channels = 1; + + /* depth */ + depth = dev->settings.depth; + if (dev->settings.scan_mode == ScanColorMode::LINEART) + depth = 1; + + + /* steps to move to reach scanning area: + - first we move to physical start of scanning + either by a fixed steps amount from the black strip + or by a fixed amount from parking position, + minus the steps done during shading calibration + - then we move by the needed offset whitin physical + scanning area + + assumption: steps are expressed at maximum motor resolution + + we need: + SANE_Fixed y_offset; + SANE_Fixed y_size; + SANE_Fixed y_offset_calib; + mm_to_steps()=motor dpi / 2.54 / 10=motor dpi / MM_PER_INCH */ + + /* if scanner uses GENESYS_FLAG_SEARCH_START y_offset is + relative from origin, else, it is from parking position */ + + move_dpi = dev->motor.base_ydpi; + + move = SANE_UNFIX (dev->model->y_offset); + move += dev->settings.tl_y; + move = (move * move_dpi) / MM_PER_INCH; + move -= dev->scanhead_position_in_steps; + DBG(DBG_info, "%s: move=%f steps\n", __func__, move); + + /* fast move to scan area */ + /* we don't move fast the whole distance since it would involve + * computing acceleration/deceleration distance for scan + * resolution. So leave a remainder for it so scan makes the final + * move tuning */ + if(channels*dev->settings.yres>=600 && move>700) + { + status = gl846_feed (dev, move-500); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to move to scan area\n", __func__); + return status; + } + move=500; + } + + DBG(DBG_info, "%s: move=%f steps\n", __func__, move); + DBG(DBG_info, "%s: move=%f steps\n", __func__, move); + + /* start */ + start = SANE_UNFIX (dev->model->x_offset); + start += dev->settings.tl_x; + start = (start * sensor.optical_res) / MM_PER_INCH; + + flags = 0; + + /* emulated lineart from gray data is required for now */ + if(dev->settings.scan_mode == ScanColorMode::LINEART + && dev->settings.dynamic_lineart) + { + flags |= SCAN_FLAG_DYNAMIC_LINEART; + } + + /* backtracking isn't handled well, so don't enable it */ + flags |= SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE; + + SetupParams params; + params.xres = dev->settings.xres; + params.yres = dev->settings.yres; + params.startx = start; + params.starty = move; + params.pixels = dev->settings.pixels; + params.lines = dev->settings.lines; + params.depth = depth; + params.channels = channels; + params.scan_method = dev->settings.scan_method; + params.scan_mode = dev->settings.scan_mode; + params.color_filter = dev->settings.color_filter; + params.flags = flags; + + status = gl846_init_scan_regs(dev, sensor, &dev->reg, params); + + if (status != SANE_STATUS_GOOD) + return status; + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + + +/** + * Send shading calibration data. The buffer is considered to always hold values + * for all the channels. + */ +static SANE_Status +gl846_send_shading_data (Genesys_Device * dev, const Genesys_Sensor& sensor, + uint8_t * data, int size) +{ + SANE_Status status = SANE_STATUS_GOOD; + uint32_t addr, length, i, x, factor, pixels; + uint32_t dpiset, dpihw, strpixel, endpixel; + uint16_t tempo; + uint32_t lines, channels; + uint8_t val,*ptr,*src; + + DBGSTART; + DBG(DBG_io2, "%s: writing %d bytes of shading data\n", __func__, size); + + /* shading data is plit in 3 (up to 5 with IR) areas + write(0x10014000,0x00000dd8) + URB 23429 bulk_out len 3544 wrote 0x33 0x10 0x.... + write(0x1003e000,0x00000dd8) + write(0x10068000,0x00000dd8) + */ + length = (uint32_t) (size / 3); + sanei_genesys_get_double(&dev->reg,REG_STRPIXEL,&tempo); + strpixel=tempo; + sanei_genesys_get_double(&dev->reg,REG_ENDPIXEL,&tempo); + endpixel=tempo; + + /* compute deletion factor */ + sanei_genesys_get_double(&dev->reg,REG_DPISET,&tempo); + dpiset=tempo; + DBG(DBG_io2, "%s: STRPIXEL=%d, ENDPIXEL=%d, PIXELS=%d, DPISET=%d\n", __func__, strpixel, endpixel, + endpixel-strpixel, dpiset); + dpihw=sanei_genesys_compute_dpihw(dev, sensor, dpiset); + factor=dpihw/dpiset; + DBG(DBG_io2, "%s: factor=%d\n", __func__, factor); + + if(DBG_LEVEL>=DBG_data) + { + dev->binary=fopen("binary.pnm","wb"); + sanei_genesys_get_triple(&dev->reg, REG_LINCNT, &lines); + channels=dev->current_setup.channels; + if(dev->binary!=NULL) + { + fprintf(dev->binary,"P5\n%d %d\n%d\n",(endpixel-strpixel)/factor*channels,lines/channels,255); + } + } + + pixels=endpixel-strpixel; + + /* since we're using SHDAREA, substract startx coordinate from shading */ + strpixel-=((sensor.CCD_start_xoffset*600)/sensor.optical_res); + + /* turn pixel value into bytes 2x16 bits words */ + strpixel*=2*2; + pixels*=2*2; + + std::vector<uint8_t> buffer(pixels, 0); + + DBG(DBG_io2, "%s: using chunks of %d (0x%04x) bytes\n", __func__, pixels, pixels); + + /* base addr of data has been written in reg D0-D4 in 4K word, so AHB address + * is 8192*reg value */ + + /* write actual color channel data */ + for(i=0;i<3;i++) + { + /* build up actual shading data by copying the part from the full width one + * to the one corresponding to SHDAREA */ + ptr = buffer.data(); + + /* iterate on both sensor segment */ + for(x=0;x<pixels;x+=4*factor) + { + /* coefficient source */ + src=(data+strpixel+i*length)+x; + + /* coefficient copy */ + ptr[0]=src[0]; + ptr[1]=src[1]; + ptr[2]=src[2]; + ptr[3]=src[3]; + + /* next shading coefficient */ + ptr+=4; + } + + RIE(sanei_genesys_read_register(dev, 0xd0+i, &val)); + addr = val * 8192 + 0x10000000; + status = sanei_genesys_write_ahb(dev, addr, pixels, buffer.data()); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s; write to AHB failed (%s)\n", __func__, sane_strstatus(status)); + return status; + } + } + + DBGCOMPLETED; + + return status; +} + +/** @brief calibrates led exposure + * Calibrate exposure by scanning a white area until the used exposure gives + * data white enough. + * @param dev device to calibrate + */ +static SANE_Status +gl846_led_calibration (Genesys_Device * dev, Genesys_Sensor& sensor, Genesys_Register_Set& regs) +{ + int num_pixels; + int total_size; + int used_res; + int i, j; + SANE_Status status = SANE_STATUS_GOOD; + int val; + int channels, depth; + int avg[3], top[3], bottom[3]; + int turn; + uint16_t exp[3]; + float move; + SANE_Bool acceptable; + + DBGSTART; + + move = SANE_UNFIX (dev->model->y_offset_calib); + move = (move * (dev->motor.base_ydpi/4)) / MM_PER_INCH; + if(move>20) + { + RIE(gl846_feed (dev, move)); + } + DBG(DBG_io, "%s: move=%f steps\n", __func__, move); + + /* offset calibration is always done in color mode */ + channels = 3; + depth=16; + used_res=sanei_genesys_compute_dpihw(dev, sensor, dev->settings.xres); + Sensor_Profile* sensor_profile = get_sensor_profile(dev->model->ccd_type, used_res); + num_pixels = (sensor.sensor_pixels*used_res)/sensor.optical_res; + + /* initial calibration reg values */ + regs = dev->reg; + + SetupParams params; + params.xres = used_res; + params.yres = used_res; + params.startx = 0; + params.starty = 0; + params.pixels = num_pixels; + params.lines = 1; + params.depth = depth; + params.channels = channels; + params.scan_method = dev->settings.scan_method; + params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS; + params.color_filter = dev->settings.color_filter; + params.flags = SCAN_FLAG_DISABLE_SHADING | + SCAN_FLAG_DISABLE_GAMMA | + SCAN_FLAG_SINGLE_LINE | + SCAN_FLAG_IGNORE_LINE_DISTANCE; + + status = gl846_init_scan_regs(dev, sensor, ®s, params); + + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + + total_size = num_pixels * channels * (depth/8) * 1; /* colors * bytes_per_color * scan lines */ + std::vector<uint8_t> line(total_size); + + /* initial loop values and boundaries */ + exp[0]=sensor_profile->expr; + exp[1]=sensor_profile->expg; + exp[2]=sensor_profile->expb; + + bottom[0]=29000; + bottom[1]=29000; + bottom[2]=29000; + + top[0]=41000; + top[1]=51000; + top[2]=51000; + + turn = 0; + + /* no move during led calibration */ + sanei_genesys_set_motor_power(regs, false); + do + { + /* set up exposure */ + sanei_genesys_set_double(®s,REG_EXPR,exp[0]); + sanei_genesys_set_double(®s,REG_EXPG,exp[1]); + sanei_genesys_set_double(®s,REG_EXPB,exp[2]); + + /* write registers and scan data */ + RIE(dev->model->cmd_set->bulk_write_register(dev, regs)); + + DBG(DBG_info, "%s: starting line reading\n", __func__); + RIE(gl846_begin_scan(dev, sensor, ®s, SANE_TRUE)); + RIE(sanei_genesys_read_data_from_scanner(dev, line.data(), total_size)); + + /* stop scanning */ + RIE(gl846_stop_action(dev)); + + if (DBG_LEVEL >= DBG_data) + { + char fn[30]; + snprintf(fn, 30, "gl846_led_%02d.pnm", turn); + sanei_genesys_write_pnm_file(fn, line.data(), depth, channels, num_pixels, 1); + } + + /* compute average */ + for (j = 0; j < channels; j++) + { + avg[j] = 0; + for (i = 0; i < num_pixels; i++) + { + if (dev->model->is_cis) + val = + line[i * 2 + j * 2 * num_pixels + 1] * 256 + + line[i * 2 + j * 2 * num_pixels]; + else + val = + line[i * 2 * channels + 2 * j + 1] * 256 + + line[i * 2 * channels + 2 * j]; + avg[j] += val; + } + + avg[j] /= num_pixels; + } + + DBG(DBG_info, "%s: average: %d,%d,%d\n", __func__, avg[0], avg[1], avg[2]); + + /* check if exposure gives average within the boundaries */ + acceptable = SANE_TRUE; + for(i=0;i<3;i++) + { + if(avg[i]<bottom[i]) + { + exp[i]=(exp[i]*bottom[i])/avg[i]; + acceptable = SANE_FALSE; + } + if(avg[i]>top[i]) + { + exp[i]=(exp[i]*top[i])/avg[i]; + acceptable = SANE_FALSE; + } + } + + turn++; + } + while (!acceptable && turn < 100); + + DBG(DBG_info, "%s: acceptable exposure: %d,%d,%d\n", __func__, exp[0], exp[1], exp[2]); + + /* set these values as final ones for scan */ + sanei_genesys_set_double(&dev->reg,REG_EXPR,exp[0]); + sanei_genesys_set_double(&dev->reg,REG_EXPG,exp[1]); + sanei_genesys_set_double(&dev->reg,REG_EXPB,exp[2]); + + /* store in this struct since it is the one used by cache calibration */ + sensor.exposure.red = exp[0]; + sensor.exposure.green = exp[1]; + sensor.exposure.blue = exp[2]; + + /* go back home */ + if(move>20) + { + status=gl846_slow_back_home (dev, SANE_TRUE); + } + + DBGCOMPLETED; + return status; +} + +/** + * set up GPIO/GPOE for idle state + */ +static SANE_Status +gl846_init_gpio (Genesys_Device * dev) +{ + SANE_Status status = SANE_STATUS_GOOD; + int idx=0; + + DBGSTART; + + /* search GPIO profile */ + while(gpios[idx].sensor_id!=0 && dev->model->gpo_type!=gpios[idx].sensor_id) + { + idx++; + } + if(gpios[idx].sensor_id==0) + { + DBG(DBG_error, "%s: failed to find GPIO profile for sensor_id=%d\n", __func__, + dev->model->ccd_type); + return SANE_STATUS_INVAL; + } + + RIE (sanei_genesys_write_register (dev, REGA7, gpios[idx].ra7)); + RIE (sanei_genesys_write_register (dev, REGA6, gpios[idx].ra6)); + + RIE (sanei_genesys_write_register (dev, REG6B, gpios[idx].r6b)); + RIE (sanei_genesys_write_register (dev, REG6C, gpios[idx].r6c)); + RIE (sanei_genesys_write_register (dev, REG6D, gpios[idx].r6d)); + RIE (sanei_genesys_write_register (dev, REG6E, gpios[idx].r6e)); + RIE (sanei_genesys_write_register (dev, REG6F, gpios[idx].r6f)); + + RIE (sanei_genesys_write_register (dev, REGA8, gpios[idx].ra8)); + RIE (sanei_genesys_write_register (dev, REGA9, gpios[idx].ra9)); + + DBGCOMPLETED; + return status; +} + +/** + * set memory layout by filling values in dedicated registers + */ +static SANE_Status +gl846_init_memory_layout (Genesys_Device * dev) +{ + SANE_Status status = SANE_STATUS_GOOD; + int idx = 0, i; + uint8_t val; + + DBGSTART + + /* point to per model memory layout */ + idx = 0; + while(layouts[idx].model!=NULL && strcmp(dev->model->name,layouts[idx].model)!=0) + { + if(strcmp(dev->model->name,layouts[idx].model)!=0) + idx++; + } + if(layouts[idx].model==NULL) + { + DBG(DBG_error, "%s: failed to find memory layout for model %s!\n", __func__, dev->model->name); + return SANE_STATUS_INVAL; + } + + /* CLKSET and DRAMSEL */ + val = layouts[idx].dramsel; + RIE (sanei_genesys_write_register (dev, REG0B, val)); + dev->reg.find_reg(0x0b).value = val; + + /* prevent further writings by bulk write register */ + dev->reg.remove_reg(0x0b); + + /* setup base address for shading and scanned data. */ + for(i=0;i<10;i++) + { + sanei_genesys_write_register (dev, 0xe0+i, layouts[idx].rx[i]); + } + + DBGCOMPLETED; + return status; +} + +/* * + * initialize ASIC from power on condition + */ +static SANE_Status +gl846_boot (Genesys_Device * dev, SANE_Bool cold) +{ + SANE_Status status = SANE_STATUS_GOOD; + uint8_t val; + + DBGSTART; + + /* reset ASIC if cold boot */ + if(cold) + { + RIE (sanei_genesys_write_register (dev, 0x0e, 0x01)); + RIE (sanei_genesys_write_register (dev, 0x0e, 0x00)); + } + + if(dev->usb_mode == 1) + { + val = 0x14; + } + else + { + val = 0x11; + } + RIE (sanei_genesys_write_0x8c (dev, 0x0f, val)); + + /* test CHKVER */ + RIE (sanei_genesys_read_register (dev, REG40, &val)); + if (val & REG40_CHKVER) + { + RIE (sanei_genesys_read_register (dev, 0x00, &val)); + DBG(DBG_info, "%s: reported version for genesys chip is 0x%02x\n", __func__, val); + } + + /* Set default values for registers */ + gl846_init_registers (dev); + + /* Write initial registers */ + RIE (dev->model->cmd_set->bulk_write_register(dev, dev->reg)); + + /* Enable DRAM by setting a rising edge on bit 3 of reg 0x0b */ + val = dev->reg.find_reg(0x0b).value & REG0B_DRAMSEL; + val = (val | REG0B_ENBDRAM); + RIE (sanei_genesys_write_register (dev, REG0B, val)); + dev->reg.find_reg(0x0b).value = val; + + /* CIS_LINE */ + if (dev->model->is_cis) + { + SETREG (0x08, REG08_CIS_LINE); + RIE (sanei_genesys_write_register (dev, 0x08, dev->reg.find_reg(0x08).value)); + } + + /* set up clocks */ + RIE (sanei_genesys_write_0x8c (dev, 0x10, 0x0e)); + RIE (sanei_genesys_write_0x8c (dev, 0x13, 0x0e)); + + /* setup gpio */ + RIE (gl846_init_gpio (dev)); + + /* setup internal memory layout */ + RIE (gl846_init_memory_layout (dev)); + + SETREG (0xf8, 0x05); + RIE (sanei_genesys_write_register (dev, 0xf8, dev->reg.find_reg(0xf8).value)); + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + +/** + * initialize backend and ASIC : registers, motor tables, and gamma tables + * then ensure scanner's head is at home + */ +static SANE_Status gl846_init(Genesys_Device * dev) +{ + SANE_Status status = SANE_STATUS_GOOD; + + DBG_INIT (); + DBGSTART; + + status=sanei_genesys_asic_init(dev, 0); + + DBGCOMPLETED; + return status; +} + +static SANE_Status +gl846_update_hardware_sensors (Genesys_Scanner * s) +{ + /* do what is needed to get a new set of events, but try to not lose + any of them. + */ + SANE_Status status = SANE_STATUS_GOOD; + uint8_t val; + uint8_t scan, file, email, copy; + switch(s->dev->model->gpo_type) + { + default: + scan=0x01; + file=0x02; + email=0x04; + copy=0x08; + } + RIE (sanei_genesys_read_register (s->dev, REG6D, &val)); + + s->buttons[BUTTON_SCAN_SW].write((val & scan) == 0); + s->buttons[BUTTON_FILE_SW].write((val & file) == 0); + s->buttons[BUTTON_EMAIL_SW].write((val & email) == 0); + s->buttons[BUTTON_COPY_SW].write((val & copy) == 0); + + return status; +} + +/** @brief search for a full width black or white strip. + * This function searches for a black or white stripe across the scanning area. + * When searching backward, the searched area must completely be of the desired + * color since this area will be used for calibration which scans forward. + * @param dev scanner device + * @param forward SANE_TRUE if searching forward, SANE_FALSE if searching backward + * @param black SANE_TRUE if searching for a black strip, SANE_FALSE for a white strip + * @return SANE_STATUS_GOOD if a matching strip is found, SANE_STATUS_UNSUPPORTED if not + */ +static SANE_Status +gl846_search_strip(Genesys_Device * dev, const Genesys_Sensor& sensor, + SANE_Bool forward, SANE_Bool black) +{ + unsigned int pixels, lines, channels; + SANE_Status status = SANE_STATUS_GOOD; + Genesys_Register_Set local_reg; + size_t size; + int steps, depth, dpi; + unsigned int pass, count, found, x, y; + char title[80]; + GenesysRegister *r; + + DBG(DBG_proc, "%s %s %s\n", __func__, black ? "black" : "white", forward ? "forward" : "reverse"); + + status = gl846_set_fe(dev, sensor, AFE_SET); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: gl846_set_fe() failed: %s\n", __func__, sane_strstatus(status)); + return status; + } + + status = gl846_stop_action (dev); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to stop: %s\n", __func__, sane_strstatus(status)); + return status; + } + + /* set up for a gray scan at lowest dpi */ + dpi = 9600; + for (x = 0; x < MAX_RESOLUTIONS; x++) + { + if (dev->model->xdpi_values[x] > 0 && dev->model->xdpi_values[x] < dpi) + dpi = dev->model->xdpi_values[x]; + } + channels = 1; + /* 10 MM */ + /* lines = (10 * dpi) / MM_PER_INCH; */ + /* shading calibation is done with dev->motor.base_ydpi */ + lines = (dev->model->shading_lines * dpi) / dev->motor.base_ydpi; + depth = 8; + pixels = (sensor.sensor_pixels * dpi) / sensor.optical_res; + size = pixels * channels * lines * (depth / 8); + std::vector<uint8_t> data(size); + + dev->scanhead_position_in_steps = 0; + + local_reg = dev->reg; + + SetupParams params; + params.xres = dpi; + params.yres = dpi; + params.startx = 0; + params.starty = 0; + params.pixels = pixels; + params.lines = lines; + params.depth = depth; + params.channels = channels; + params.scan_mode = ScanColorMode::GRAY; + params.color_filter = ColorFilter::RED; + params.flags = SCAN_FLAG_DISABLE_SHADING | + SCAN_FLAG_DISABLE_GAMMA; + + status = gl846_init_scan_regs(dev, sensor, &local_reg, params); + + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to setup for scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + + /* set up for reverse or forward */ + r = sanei_genesys_get_address (&local_reg, REG02); + if (forward) + r->value &= ~REG02_MTRREV; + else + r->value |= REG02_MTRREV; + + + status = dev->model->cmd_set->bulk_write_register(dev, local_reg); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: Failed to bulk write registers: %s\n", __func__, sane_strstatus(status)); + return status; + } + + status = gl846_begin_scan(dev, sensor, &local_reg, SANE_TRUE); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to begin scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + + /* waits for valid data */ + do + sanei_genesys_test_buffer_empty (dev, &steps); + while (steps); + + /* now we're on target, we can read data */ + status = sanei_genesys_read_data_from_scanner(dev, data.data(), size); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to read data: %s\n", __func__, sane_strstatus(status)); + return status; + } + + status = gl846_stop_action (dev); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: gl846_stop_action failed\n", __func__); + return status; + } + + pass = 0; + if (DBG_LEVEL >= DBG_data) + { + sprintf(title, "gl846_search_strip_%s_%s%02d.pnm", + black ? "black" : "white", forward ? "fwd" : "bwd", (int)pass); + sanei_genesys_write_pnm_file(title, data.data(), depth, channels, pixels, lines); + } + + /* loop until strip is found or maximum pass number done */ + found = 0; + while (pass < 20 && !found) + { + status = dev->model->cmd_set->bulk_write_register(dev, local_reg); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: Failed to bulk write registers: %s\n", __func__, + sane_strstatus(status)); + return status; + } + + /* now start scan */ + status = gl846_begin_scan(dev, sensor, &local_reg, SANE_TRUE); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to begin scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + + /* waits for valid data */ + do + sanei_genesys_test_buffer_empty (dev, &steps); + while (steps); + + /* now we're on target, we can read data */ + status = sanei_genesys_read_data_from_scanner(dev, data.data(), size); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to read data: %s\n", __func__, sane_strstatus(status)); + return status; + } + + status = gl846_stop_action (dev); + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: gl846_stop_action failed\n", __func__); + return status; + } + + if (DBG_LEVEL >= DBG_data) + { + sprintf(title, "gl846_search_strip_%s_%s%02d.pnm", + black ? "black" : "white", forward ? "fwd" : "bwd", (int)pass); + sanei_genesys_write_pnm_file(title, data.data(), depth, channels, pixels, lines); + } + + /* search data to find black strip */ + /* when searching forward, we only need one line of the searched color since we + * will scan forward. But when doing backward search, we need all the area of the + * same color */ + if (forward) + { + for (y = 0; y < lines && !found; y++) + { + count = 0; + /* count of white/black pixels depending on the color searched */ + for (x = 0; x < pixels; x++) + { + /* when searching for black, detect white pixels */ + if (black && data[y * pixels + x] > 90) + { + count++; + } + /* when searching for white, detect black pixels */ + if (!black && data[y * pixels + x] < 60) + { + count++; + } + } + + /* at end of line, if count >= 3%, line is not fully of the desired color + * so we must go to next line of the buffer */ + /* count*100/pixels < 3 */ + if ((count * 100) / pixels < 3) + { + found = 1; + DBG(DBG_data, "%s: strip found forward during pass %d at line %d\n", __func__, + pass, y); + } + else + { + DBG(DBG_data, "%s: pixels=%d, count=%d (%d%%)\n", __func__, pixels, count, + (100 * count) / pixels); + } + } + } + else /* since calibration scans are done forward, we need the whole area + to be of the required color when searching backward */ + { + count = 0; + for (y = 0; y < lines; y++) + { + /* count of white/black pixels depending on the color searched */ + for (x = 0; x < pixels; x++) + { + /* when searching for black, detect white pixels */ + if (black && data[y * pixels + x] > 90) + { + count++; + } + /* when searching for white, detect black pixels */ + if (!black && data[y * pixels + x] < 60) + { + count++; + } + } + } + + /* at end of area, if count >= 3%, area is not fully of the desired color + * so we must go to next buffer */ + if ((count * 100) / (pixels * lines) < 3) + { + found = 1; + DBG(DBG_data, "%s: strip found backward during pass %d \n", __func__, pass); + } + else + { + DBG(DBG_data, "%s: pixels=%d, count=%d (%d%%)\n", __func__, pixels, count, + (100 * count) / pixels); + } + } + pass++; + } + + if (found) + { + status = SANE_STATUS_GOOD; + DBG(DBG_info, "%s: %s strip found\n", __func__, black ? "black" : "white"); + } + else + { + status = SANE_STATUS_UNSUPPORTED; + DBG(DBG_info, "%s: %s strip not found\n", __func__, black ? "black" : "white"); + } + + DBGCOMPLETED; + return status; +} + +/** + * average dark pixels of a 8 bits scan + */ +static int +dark_average (uint8_t * data, unsigned int pixels, unsigned int lines, + unsigned int channels, unsigned int black) +{ + unsigned int i, j, k, average, count; + unsigned int avg[3]; + uint8_t val; + + /* computes average value on black margin */ + for (k = 0; k < channels; k++) + { + avg[k] = 0; + count = 0; + for (i = 0; i < lines; i++) + { + for (j = 0; j < black; j++) + { + val = data[i * channels * pixels + j + k]; + avg[k] += val; + count++; + } + } + if (count) + avg[k] /= count; + DBG(DBG_info, "%s: avg[%d] = %d\n", __func__, k, avg[k]); + } + average = 0; + for (i = 0; i < channels; i++) + average += avg[i]; + average /= channels; + DBG(DBG_info, "%s: average = %d\n", __func__, average); + return average; +} + +static SANE_Status +gl846_offset_calibration(Genesys_Device * dev, const Genesys_Sensor& sensor, + Genesys_Register_Set& regs) +{ + SANE_Status status = SANE_STATUS_GOOD; + uint8_t reg04; + unsigned int channels, bpp; + int pass = 0, avg, total_size; + int topavg, bottomavg, resolution, lines; + int top, bottom, black_pixels, pixels; + + DBGSTART; + + /* no gain nor offset for AKM AFE */ + RIE (sanei_genesys_read_register (dev, REG04, ®04)); + if ((reg04 & REG04_FESET) == 0x02) + { + DBGCOMPLETED; + return status; + } + + /* offset calibration is always done in color mode */ + channels = 3; + resolution=sensor.optical_res; + dev->calib_pixels = sensor.sensor_pixels; + lines=1; + bpp=8; + pixels= (sensor.sensor_pixels*resolution) / sensor.optical_res; + black_pixels = (sensor.black_pixels * resolution) / sensor.optical_res; + DBG(DBG_io2, "%s: black_pixels=%d\n", __func__, black_pixels); + + SetupParams params; + params.xres = resolution; + params.yres = resolution; + params.startx = 0; + params.starty = 0; + params.pixels = pixels; + params.lines = lines; + params.depth = bpp; + params.channels = channels; + params.scan_method = dev->settings.scan_method; + params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS; + params.color_filter = dev->settings.color_filter; + params.flags = SCAN_FLAG_DISABLE_SHADING | + SCAN_FLAG_DISABLE_GAMMA | + SCAN_FLAG_SINGLE_LINE | + SCAN_FLAG_IGNORE_LINE_DISTANCE; + + status = gl846_init_scan_regs(dev, sensor, ®s, params); + + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + sanei_genesys_set_motor_power(regs, false); + + /* allocate memory for scans */ + total_size = pixels * channels * lines * (bpp/8); /* colors * bytes_per_color * scan lines */ + + std::vector<uint8_t> first_line(total_size); + std::vector<uint8_t> second_line(total_size); + + /* init gain */ + dev->frontend.set_gain(0, 0); + dev->frontend.set_gain(1, 0); + dev->frontend.set_gain(2, 0); + + /* scan with no move */ + bottom = 10; + dev->frontend.set_offset(0, bottom); + dev->frontend.set_offset(1, bottom); + dev->frontend.set_offset(2, bottom); + + RIE(gl846_set_fe(dev, sensor, AFE_SET)); + RIE(dev->model->cmd_set->bulk_write_register(dev, regs)); + DBG(DBG_info, "%s: starting first line reading\n", __func__); + RIE(gl846_begin_scan(dev, sensor, ®s, SANE_TRUE)); + RIE(sanei_genesys_read_data_from_scanner (dev, first_line.data(), total_size)); + if (DBG_LEVEL >= DBG_data) + { + char fn[30]; + snprintf(fn, 30, "gl846_offset%03d.pnm", bottom); + sanei_genesys_write_pnm_file(fn, first_line.data(), bpp, channels, pixels, lines); + } + + bottomavg = dark_average(first_line.data(), pixels, lines, channels, black_pixels); + DBG(DBG_io2, "%s: bottom avg=%d\n", __func__, bottomavg); + + /* now top value */ + top = 255; + dev->frontend.set_offset(0, top); + dev->frontend.set_offset(1, top); + dev->frontend.set_offset(2, top); + RIE(gl846_set_fe(dev, sensor, AFE_SET)); + RIE(dev->model->cmd_set->bulk_write_register(dev, regs)); + DBG(DBG_info, "%s: starting second line reading\n", __func__); + RIE(gl846_begin_scan(dev, sensor, ®s, SANE_TRUE)); + RIE(sanei_genesys_read_data_from_scanner (dev, second_line.data(), total_size)); + + topavg = dark_average(second_line.data(), pixels, lines, channels, black_pixels); + DBG(DBG_io2, "%s: top avg=%d\n", __func__, topavg); + + /* loop until acceptable level */ + while ((pass < 32) && (top - bottom > 1)) + { + pass++; + + /* settings for new scan */ + dev->frontend.set_offset(0, (top + bottom) / 2); + dev->frontend.set_offset(1, (top + bottom) / 2); + dev->frontend.set_offset(2, (top + bottom) / 2); + + /* scan with no move */ + RIE(gl846_set_fe(dev, sensor, AFE_SET)); + RIE(dev->model->cmd_set->bulk_write_register(dev, regs)); + DBG(DBG_info, "%s: starting second line reading\n", __func__); + RIE(gl846_begin_scan(dev, sensor, ®s, SANE_TRUE)); + RIE(sanei_genesys_read_data_from_scanner (dev, second_line.data(), total_size)); + + if (DBG_LEVEL >= DBG_data) + { + char fn[30]; + snprintf(fn, 30, "gl846_offset%03d.pnm", dev->frontend.get_offset(1)); + sanei_genesys_write_pnm_file(fn, second_line.data(), bpp, channels, pixels, lines); + } + + avg = dark_average(second_line.data(), pixels, lines, channels, black_pixels); + DBG(DBG_info, "%s: avg=%d offset=%d\n", __func__, avg, dev->frontend.get_offset(1)); + + /* compute new boundaries */ + if (topavg == avg) + { + topavg = avg; + top = dev->frontend.get_offset(1); + } + else + { + bottomavg = avg; + bottom = dev->frontend.get_offset(1); + } + } + DBG(DBG_info, "%s: offset=(%d,%d,%d)\n", __func__, + dev->frontend.get_offset(0), + dev->frontend.get_offset(1), + dev->frontend.get_offset(2)); + + DBGCOMPLETED; + return SANE_STATUS_GOOD; +} + +static SANE_Status +gl846_coarse_gain_calibration(Genesys_Device * dev, const Genesys_Sensor& sensor, + Genesys_Register_Set& regs, int dpi) +{ + int pixels; + int total_size; + uint8_t reg04; + int i, j, channels; + SANE_Status status = SANE_STATUS_GOOD; + int max[3]; + float gain[3],coeff; + int val, code, lines; + int resolution; + int bpp; + + DBG(DBG_proc, "%s: dpi = %d\n", __func__, dpi); + + /* no gain nor offset for AKM AFE */ + RIE (sanei_genesys_read_register (dev, REG04, ®04)); + if ((reg04 & REG04_FESET) == 0x02) + { + DBGCOMPLETED; + return status; + } + + /* coarse gain calibration is always done in color mode */ + channels = 3; + + /* follow CKSEL */ + if(dev->settings.xres<sensor.optical_res) + { + coeff=0.9; + /*resolution=sensor.optical_res/2;*/ + resolution=sensor.optical_res; + } + else + { + resolution=sensor.optical_res; + coeff=1.0; + } + lines=10; + bpp=8; + pixels = (sensor.sensor_pixels * resolution) / sensor.optical_res; + + SetupParams params; + params.xres = resolution; + params.yres = resolution; + params.startx = 0; + params.starty = 0; + params.pixels = pixels; + params.lines = lines; + params.depth = bpp; + params.channels = channels; + params.scan_method = dev->settings.scan_method; + params.scan_mode = ScanColorMode::COLOR_SINGLE_PASS; + params.color_filter = dev->settings.color_filter; + params.flags = SCAN_FLAG_DISABLE_SHADING | + SCAN_FLAG_DISABLE_GAMMA | + SCAN_FLAG_SINGLE_LINE | + SCAN_FLAG_IGNORE_LINE_DISTANCE; + + try { + status = gl846_init_scan_regs(dev, sensor, ®s, params); + } catch (...) { + try { + sanei_genesys_set_motor_power(regs, false); + } catch (...) {} + throw; + } + + if (status != SANE_STATUS_GOOD) + { + DBG(DBG_error, "%s: failed to setup scan: %s\n", __func__, sane_strstatus(status)); + return status; + } + + RIE (dev->model->cmd_set->bulk_write_register(dev, regs)); + + total_size = pixels * channels * (16/bpp) * lines; + + std::vector<uint8_t> line(total_size); + + RIE(gl846_set_fe(dev, sensor, AFE_SET)); + RIE(gl846_begin_scan(dev, sensor, ®s, SANE_TRUE)); + RIE(sanei_genesys_read_data_from_scanner(dev, line.data(), total_size)); + + if (DBG_LEVEL >= DBG_data) + sanei_genesys_write_pnm_file("gl846_gain.pnm", line.data(), bpp, channels, pixels, lines); + + /* average value on each channel */ + for (j = 0; j < channels; j++) + { + max[j] = 0; + for (i = pixels/4; i < (pixels*3/4); i++) + { + if (dev->model->is_cis) + val = line[i + j * pixels]; + else + val = line[i * channels + j]; + + max[j] += val; + } + max[j] = max[j] / (pixels/2); + + gain[j] = ((float) sensor.gain_white_ref*coeff) / max[j]; + + /* turn logical gain value into gain code, checking for overflow */ + code = 283 - 208 / gain[j]; + if (code > 255) + code = 255; + else if (code < 0) + code = 0; + dev->frontend.set_gain(j, code); + + DBG(DBG_proc, "%s: channel %d, max=%d, gain = %f, setting:%d\n", __func__, j, max[j], gain[j], + dev->frontend.get_gain(j)); + } + + if (dev->model->is_cis) { + uint8_t gain0 = dev->frontend.get_gain(0); + if (gain0 > dev->frontend.get_gain(1)) { + gain0 = dev->frontend.get_gain(1); + } + if (gain0 > dev->frontend.get_gain(2)) { + gain0 = dev->frontend.get_gain(2); + } + dev->frontend.set_gain(0, gain0); + dev->frontend.set_gain(1, gain0); + dev->frontend.set_gain(2, gain0); + } + + RIE (gl846_stop_action (dev)); + + status=gl846_slow_back_home (dev, SANE_TRUE); + + DBGCOMPLETED; + return status; +} + + +/** the gl846 command set */ +static Genesys_Command_Set gl846_cmd_set = { + "gl846-generic", /* the name of this set */ + + nullptr, + + gl846_init, + NULL, + gl846_init_regs_for_coarse_calibration, + gl846_init_regs_for_shading, + gl846_init_regs_for_scan, + + gl846_get_filter_bit, + gl846_get_lineart_bit, + gl846_get_bitset_bit, + gl846_get_gain4_bit, + gl846_get_fast_feed_bit, + gl846_test_buffer_empty_bit, + gl846_test_motor_flag_bit, + + gl846_set_fe, + gl846_set_powersaving, + gl846_save_power, + + gl846_begin_scan, + gl846_end_scan, + + sanei_genesys_send_gamma_table, + + gl846_search_start_position, + + gl846_offset_calibration, + gl846_coarse_gain_calibration, + gl846_led_calibration, + + NULL, + gl846_slow_back_home, + NULL, + + sanei_genesys_bulk_write_register, + NULL, + sanei_genesys_bulk_read_data, + + gl846_update_hardware_sensors, + + NULL, + NULL, + NULL, + gl846_search_strip, + + sanei_genesys_is_compatible_calibration, + NULL, + gl846_send_shading_data, + gl846_calculate_current_setup, + gl846_boot +}; + +SANE_Status +sanei_gl846_init_cmd_set (Genesys_Device * dev) +{ + dev->model->cmd_set = &gl846_cmd_set; + return SANE_STATUS_GOOD; +} |