diff options
Diffstat (limited to 'backend/genesys_low.c')
| -rw-r--r-- | backend/genesys_low.c | 2010 |
1 files changed, 0 insertions, 2010 deletions
diff --git a/backend/genesys_low.c b/backend/genesys_low.c deleted file mode 100644 index 4cbd75d..0000000 --- a/backend/genesys_low.c +++ /dev/null @@ -1,2010 +0,0 @@ -/* sane - Scanner Access Now Easy. - - Copyright (C) 2010-2013 Stéphane Voltz <stef.dev@free.fr> - - - This file is part of the SANE package. - - This program is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - This program is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, - MA 02111-1307, USA. - - As a special exception, the authors of SANE give permission for - additional uses of the libraries contained in this release of SANE. - - The exception is that, if you link a SANE library with other files - to produce an executable, this does not by itself cause the - resulting executable to be covered by the GNU General Public - License. Your use of that executable is in no way restricted on - account of linking the SANE library code into it. - - This exception does not, however, invalidate any other reasons why - the executable file might be covered by the GNU General Public - License. - - If you submit changes to SANE to the maintainers to be included in - a subsequent release, you agree by submitting the changes that - those changes may be distributed with this exception intact. - - If you write modifications of your own for SANE, it is your choice - whether to permit this exception to apply to your modifications. - If you do not wish that, delete this exception notice. -*/ -#undef BACKEND_NAME -#define BACKEND_NAME genesys_low - -#include "genesys_low.h" - -/* ------------------------------------------------------------------------ */ -/* functions calling ASIC specific functions */ -/* ------------------------------------------------------------------------ */ - -/** - * setup the hardware dependent functions - */ -SANE_Status -sanei_genesys_init_cmd_set (Genesys_Device * dev) -{ - DBG_INIT (); - switch (dev->model->asic_type) - { - case GENESYS_GL646: - return sanei_gl646_init_cmd_set (dev); - case GENESYS_GL841: - return sanei_gl841_init_cmd_set (dev); - case GENESYS_GL843: - return sanei_gl843_init_cmd_set (dev); - case GENESYS_GL845: /* since only a few reg bits differs - we handle both together */ - case GENESYS_GL846: - return sanei_gl846_init_cmd_set (dev); - case GENESYS_GL847: - return sanei_gl847_init_cmd_set (dev); - case GENESYS_GL124: - return sanei_gl124_init_cmd_set (dev); - default: - return SANE_STATUS_INVAL; - } -} - -/* ------------------------------------------------------------------------ */ -/* General IO and debugging functions */ -/* ------------------------------------------------------------------------ */ - -/* Write data to a pnm file (e.g. calibration). For debugging only */ -/* data is RGB or grey, with little endian byte order */ -SANE_Status -sanei_genesys_write_pnm_file (char *filename, uint8_t * data, int depth, - int channels, int pixels_per_line, int lines) -{ - FILE *out; - int count; - - DBG (DBG_info, - "sanei_genesys_write_pnm_file: depth=%d, channels=%d, ppl=%d, lines=%d\n", - depth, channels, pixels_per_line, lines); - - out = fopen (filename, "w"); - if (!out) - { - DBG (DBG_error, - "sanei_genesys_write_pnm_file: could nor open %s for writing: %s\n", - filename, strerror (errno)); - return SANE_STATUS_INVAL; - } - if(depth==1) - { - fprintf (out, "P4\n%d\n%d\n", pixels_per_line, lines); - } - else - { - fprintf (out, "P%c\n%d\n%d\n%d\n", channels == 1 ? '5' : '6', - pixels_per_line, lines, (int) pow (2, depth) - 1); - } - if (channels == 3) - { - for (count = 0; count < (pixels_per_line * lines * 3); count++) - { - if (depth == 16) - fputc (*(data + 1), out); - fputc (*(data++), out); - if (depth == 16) - data++; - } - } - else - { - if (depth==1) - { - pixels_per_line/=8; - } - for (count = 0; count < (pixels_per_line * lines); count++) - { - switch (depth) - { - case 8: - fputc (*(data + count), out); - break; - case 16: - fputc (*(data + 1), out); - fputc (*(data), out); - data += 2; - break; - default: - fputc(data[count], out); - break; - } - } - } - fclose (out); - - DBG (DBG_proc, "sanei_genesys_write_pnm_file: finished\n"); - return SANE_STATUS_GOOD; -} - -/* the following 2 functions are used to handle registers in a - way that doesn't depend on the actual ASIC type */ - -/* Reads a register from a register set */ -SANE_Byte -sanei_genesys_read_reg_from_set (Genesys_Register_Set * reg, - uint16_t address) -{ - SANE_Int i; - - for (i = 0; i < GENESYS_MAX_REGS && reg[i].address; i++) - { - if (reg[i].address == address) - { - return reg[i].value; - } - } - return 0; -} - -/* Reads a register from a register set */ -void -sanei_genesys_set_reg_from_set (Genesys_Register_Set * reg, uint16_t address, - SANE_Byte value) -{ - SANE_Int i; - - for (i = 0; i < GENESYS_MAX_REGS && reg[i].address; i++) - { - if (reg[i].address == address) - { - reg[i].value = value; - break; - } - } -} - - -/* ------------------------------------------------------------------------ */ -/* Read and write RAM, registers and AFE */ -/* ------------------------------------------------------------------------ */ - -/** @brief write to one high (addr >= 0x100) register - * write to a register which address is higher than 0xff. - * @param dev opened device to write to - * @param reg LSB of register address - * @param val value to write - */ -SANE_Status -sanei_genesys_write_hregister (Genesys_Device * dev, uint16_t reg, uint8_t val) -{ - SANE_Status status; - uint8_t buffer[2]; - - buffer[0]=reg & 0xff; - buffer[1]=val; - status = - sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_BUFFER, - 0x100 | VALUE_SET_REGISTER, INDEX, 2, buffer); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, "sanei_genesys_write_hregister (0x%02x, 0x%02x): failed : %s\n", reg, val, sane_strstatus (status)); - return status; - } - - DBG (DBG_io, "sanei_genesys_write_hregister (0x%02x, 0x%02x) completed\n", - reg, val); - - return status; -} - -/** @brief read from one high (addr >= 0x100) register - * Read to a register which address is higher than 0xff. Second byte is check to detect - * physical link errors. - * @param dev opened device to read from - * @param reg LSB of register address - * @param val value to write - */ -SANE_Status -sanei_genesys_read_hregister (Genesys_Device * dev, uint16_t reg, uint8_t * val) -{ - SANE_Status status; - SANE_Byte value[2]; - - status = - sanei_usb_control_msg (dev->dn, REQUEST_TYPE_IN, REQUEST_BUFFER, - 0x100 | VALUE_GET_REGISTER, 0x22+((reg & 0xff)<<8), 2, value); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_read_hregister (0x%02x): failed while reading register: %s\n", - reg, sane_strstatus (status)); - return status; - } - *val=value[0]; - DBG( DBG_io2, "sanei_genesys_read_hregister(0x%02x)=0x%02x\n",reg,*val); - - /* check usb link status */ - if((value[1] & 0xff) != 0x55) - { - DBG (DBG_error,"sanei_genesys_read_hregister: invalid read, scanner unplugged ?\n"); - status=SANE_STATUS_IO_ERROR; - } - return status; -} - -/** - * Write to one GL847 ASIC register -URB 10 control 0x40 0x04 0x83 0x00 len 2 wrote 0xa6 0x04 - */ -static SANE_Status -sanei_genesys_write_gl847_register (Genesys_Device * dev, uint8_t reg, uint8_t val) -{ - SANE_Status status; - uint8_t buffer[2]; - - buffer[0]=reg; - buffer[1]=val; - status = - sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_BUFFER, - VALUE_SET_REGISTER, INDEX, 2, buffer); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, "sanei_genesys_write_gl847_register (0x%02x, 0x%02x): failed : %s\n", reg, val, sane_strstatus (status)); - return status; - } - - DBG (DBG_io, "sanei_genesys_write_gl847_register (0x%02x, 0x%02x) completed\n", - reg, val); - - return status; -} - -/** - * Write to one ASIC register - */ -SANE_Status -sanei_genesys_write_register (Genesys_Device * dev, uint16_t reg, uint8_t val) -{ - SANE_Status status; - SANE_Byte reg8; - -#ifdef UNIT_TESTING - if(dev->usb_mode<0) - { - return SANE_STATUS_GOOD; - } -#endif - - /* 16 bit register address space */ - if(reg>255) - { - return sanei_genesys_write_hregister(dev, reg, val); - } - - /* route to gl847 function if needed */ - if(dev->model->asic_type==GENESYS_GL847 - || dev->model->asic_type==GENESYS_GL845 - || dev->model->asic_type==GENESYS_GL846 - || dev->model->asic_type==GENESYS_GL124) - { - return sanei_genesys_write_gl847_register(dev, reg, val); - } - - reg8=reg & 0xff; - status = - sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_REGISTER, - VALUE_SET_REGISTER, INDEX, 1, ®8); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_write_register (0x%02x, 0x%02x): failed while setting register: %s\n", - reg, val, sane_strstatus (status)); - return status; - } - - status = - sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_REGISTER, - VALUE_WRITE_REGISTER, INDEX, 1, &val); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_write_register (0x%02x, 0x%02x): failed while writing register value: %s\n", - reg, val, sane_strstatus (status)); - return status; - } - - DBG (DBG_io, "sanei_genesys_write_register (0x%02x, 0x%02x) completed\n", - reg, val); - - return status; -} - -/** - * @brief write command to 0x8c endpoint - * Write a value to 0x8c end point (end access), for USB firmware related operations - * Known values are 0x0f, 0x11 for USB 2.0 data transfer and 0x0f,0x14 for USB1.1 - * @param dev device to write to - * @param index index of the command - * @param val value to write - */ -SANE_Status -sanei_genesys_write_0x8c (Genesys_Device * dev, uint8_t index, uint8_t val) -{ - SANE_Status status; - -#ifdef UNIT_TESTING - if(dev->usb_mode<0) - { - return SANE_STATUS_GOOD; - } -#endif - - DBG (DBG_io, "sanei_genesys_write_0x8c: 0x%02x,0x%02x\n", index, val); - - status = - sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_REGISTER, - VALUE_BUF_ENDACCESS, index, 1, &val); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_write_0x8c: failed %s\n", sane_strstatus (status)); - } - return status; -} - -/* read reg 0x41: - * URB 164 control 0xc0 0x04 0x8e 0x4122 len 2 read 0xfc 0x55 - */ -static SANE_Status -sanei_genesys_read_gl847_register (Genesys_Device * dev, uint16_t reg, uint8_t * val) -{ - SANE_Status status; - SANE_Byte value[2]; - - status = - sanei_usb_control_msg (dev->dn, REQUEST_TYPE_IN, REQUEST_BUFFER, - VALUE_GET_REGISTER, 0x22+(reg<<8), 2, value); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_read_gl847_register (0x%02x): failed while setting register: %s\n", - reg, sane_strstatus (status)); - return status; - } - *val=value[0]; - DBG( DBG_io2, "sanei_genesys_read_gl847_register(0x%02x)=0x%02x\n",reg,*val); - - /* check usb link status */ - if((value[1] & 0xff) != 0x55) - { - DBG (DBG_error,"sanei_genesys_read_gl847_register: invalid read, scanner unplugged ?\n"); - status=SANE_STATUS_IO_ERROR; - } - return status; -} - -/* Read from one register */ -SANE_Status -sanei_genesys_read_register (Genesys_Device * dev, uint16_t reg, uint8_t * val) -{ - SANE_Status status; - SANE_Byte reg8; - -#ifdef UNIT_TESTING - if(dev->usb_mode<0) - { - *val=0; - return SANE_STATUS_GOOD; - } -#endif - - /* 16 bit register address space */ - if(reg>255) - { - return sanei_genesys_read_hregister(dev, reg, val); - } - - /* route to gl847 function if needed */ - if(dev->model->asic_type==GENESYS_GL847 - || dev->model->asic_type==GENESYS_GL845 - || dev->model->asic_type==GENESYS_GL846 - || dev->model->asic_type==GENESYS_GL124) - return sanei_genesys_read_gl847_register(dev, reg, val); - - /* 8 bit register address space */ - reg8=(SANE_Byte)(reg& 0Xff); - status = - sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_REGISTER, - VALUE_SET_REGISTER, INDEX, 1, ®8); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_read_register (0x%02x, 0x%02x): failed while setting register: %s\n", - reg, *val, sane_strstatus (status)); - return status; - } - - *val = 0; - - status = - sanei_usb_control_msg (dev->dn, REQUEST_TYPE_IN, REQUEST_REGISTER, - VALUE_READ_REGISTER, INDEX, 1, val); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_read_register (0x%02x, 0x%02x): failed while reading register value: %s\n", - reg, *val, sane_strstatus (status)); - return status; - } - - DBG (DBG_io, "sanei_genesys_read_register (0x%02x, 0x%02x) completed\n", - reg, *val); - - return status; -} - -/* Set address for writing data */ -SANE_Status -sanei_genesys_set_buffer_address (Genesys_Device * dev, uint32_t addr) -{ - SANE_Status status; - - if(dev->model->asic_type==GENESYS_GL847 - || dev->model->asic_type==GENESYS_GL845 - || dev->model->asic_type==GENESYS_GL846 - || dev->model->asic_type==GENESYS_GL124) - { - DBG (DBG_warn, - "sanei_genesys_set_buffer_address: shouldn't be used for GL846+ ASICs\n"); - return SANE_STATUS_GOOD; - } - - DBG (DBG_io, - "sanei_genesys_set_buffer_address: setting address to 0x%05x\n", - addr & 0xfffffff0); - - addr = addr >> 4; - - status = sanei_genesys_write_register (dev, 0x2b, (addr & 0xff)); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_set_buffer_address: failed while writing low byte: %s\n", - sane_strstatus (status)); - return status; - } - - addr = addr >> 8; - status = sanei_genesys_write_register (dev, 0x2a, (addr & 0xff)); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_set_buffer_address: failed while writing high byte: %s\n", - sane_strstatus (status)); - return status; - } - - DBG (DBG_io, "sanei_genesys_set_buffer_address: completed\n"); - - return status; -} - -/**@brief read data from analog frontend (AFE) - * @param dev device owning the AFE - * @param addr register address to read - * @param data placeholder for the result - * @return SANE_STATUS_GOOD is OK, else the error code - */ -SANE_Status -sanei_genesys_fe_read_data (Genesys_Device * dev, uint8_t addr, - uint16_t *data) -{ - SANE_Status status; - uint8_t value; - Genesys_Register_Set reg[1]; - - - DBG (DBG_proc, "sanei_genesys_fe_read_data: start\n"); - - reg[0].address = 0x50; - reg[0].value = addr; - - /* set up read address */ - status = dev->model->cmd_set->bulk_write_register (dev, reg, 1); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_fe_read_data: failed while bulk writing registers: %s\n", - sane_strstatus (status)); - return status; - } - - /* read data */ - RIE (sanei_genesys_read_register (dev, 0x46, &value)); - *data=256*value; - RIE (sanei_genesys_read_register (dev, 0x47, &value)); - *data+=value; - - DBG (DBG_io, "sanei_genesys_fe_read_data (0x%02x, 0x%04x)\n", addr, *data); - DBG (DBG_proc, "sanei_genesys_fe_read_data: completed\n"); - - return status; -} - -/*@brief write data to analog frontend - * writes data to analog frontend to set it up accordingly - * to the sensor settings (exposure, timings, color, bit depth, ...) - * @param dev devie owning the AFE to write to - * @param addr AFE rister address - * @param data value to write to AFE register - **/ -SANE_Status -sanei_genesys_fe_write_data (Genesys_Device * dev, uint8_t addr, - uint16_t data) -{ - SANE_Status status; - Genesys_Register_Set reg[3]; - -#ifdef UNIT_TESTING - if(dev->usb_mode<0) - { - return SANE_STATUS_GOOD; - } -#endif - - DBG (DBG_io, "sanei_genesys_fe_write_data (0x%02x, 0x%04x)\n", addr, data); - - reg[0].address = 0x51; - reg[0].value = addr; - reg[1].address = 0x3a; - reg[1].value = (data / 256) & 0xff; - reg[2].address = 0x3b; - reg[2].value = data & 0xff; - if (dev->model->asic_type == GENESYS_GL124) - { - reg[1].address = 0x5d; - reg[2].address = 0x5e; - } - - status = dev->model->cmd_set->bulk_write_register (dev, reg, 3); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_fe_write_data: failed while bulk writing registers: %s\n", - sane_strstatus (status)); - return status; - } - - DBG (DBG_io, "sanei_genesys_fe_write_data: completed\n"); - - return status; -} - -/* ------------------------------------------------------------------------ */ -/* Medium level functions */ -/* ------------------------------------------------------------------------ */ - -/** read the status register - */ -SANE_Status -sanei_genesys_get_status (Genesys_Device * dev, uint8_t * status) -{ -#ifdef UNIT_TESTING - if(dev->usb_mode<0) - { - *status=0; - return SANE_STATUS_GOOD; - } -#endif - - if(dev->model->asic_type==GENESYS_GL124) - return sanei_genesys_read_hregister(dev, 0x101, status); - return sanei_genesys_read_register (dev, 0x41, status); -} - -/** - * decodes and prints content of status register - * @param val value read from status register - */ -void sanei_genesys_print_status (uint8_t val) -{ - char msg[80]; - - sprintf (msg, "%s%s%s%s%s%s%s%s", - val & PWRBIT ? "PWRBIT " : "", - val & BUFEMPTY ? "BUFEMPTY " : "", - val & FEEDFSH ? "FEEDFSH " : "", - val & SCANFSH ? "SCANFSH " : "", - val & HOMESNR ? "HOMESNR " : "", - val & LAMPSTS ? "LAMPSTS " : "", - val & FEBUSY ? "FEBUSY " : "", - val & MOTORENB ? "MOTORENB" : ""); - DBG (DBG_info, "status=%s\n", msg); -} - -#if 0 -/* returns pixels per line from register set */ -/*candidate for moving into chip specific files?*/ -static int -genesys_pixels_per_line (Genesys_Register_Set * reg) -{ - int pixels_per_line; - - pixels_per_line = - sanei_genesys_read_reg_from_set (reg, - 0x32) * 256 + - sanei_genesys_read_reg_from_set (reg, 0x33); - pixels_per_line -= - (sanei_genesys_read_reg_from_set (reg, 0x30) * 256 + - sanei_genesys_read_reg_from_set (reg, 0x31)); - - return pixels_per_line; -} - -/* returns dpiset from register set */ -/*candidate for moving into chip specific files?*/ -static int -genesys_dpiset (Genesys_Register_Set * reg) -{ - int dpiset; - - dpiset = - sanei_genesys_read_reg_from_set (reg, - 0x2c) * 256 + - sanei_genesys_read_reg_from_set (reg, 0x2d); - - return dpiset; -} -#endif - -/** read the number of valid words in scanner's RAM - * ie registers 42-43-44 - */ -/*candidate for moving into chip specific files?*/ -SANE_Status -sanei_genesys_read_valid_words (Genesys_Device * dev, unsigned int *words) -{ - SANE_Status status; - uint8_t value; - - DBGSTART; - switch (dev->model->asic_type) - { - case GENESYS_GL124: - RIE (sanei_genesys_read_hregister (dev, 0x102, &value)); - *words = (value & 0x03); - RIE (sanei_genesys_read_hregister (dev, 0x103, &value)); - *words = *words * 256 + value; - RIE (sanei_genesys_read_hregister (dev, 0x104, &value)); - *words = *words * 256 + value; - RIE (sanei_genesys_read_hregister (dev, 0x105, &value)); - *words = *words * 256 + value; - break; - - case GENESYS_GL845: - case GENESYS_GL846: - RIE (sanei_genesys_read_register (dev, 0x42, &value)); - *words = (value & 0x02); - RIE (sanei_genesys_read_register (dev, 0x43, &value)); - *words = *words * 256 + value; - RIE (sanei_genesys_read_register (dev, 0x44, &value)); - *words = *words * 256 + value; - RIE (sanei_genesys_read_register (dev, 0x45, &value)); - *words = *words * 256 + value; - break; - - case GENESYS_GL847: - RIE (sanei_genesys_read_register (dev, 0x42, &value)); - *words = (value & 0x03); - RIE (sanei_genesys_read_register (dev, 0x43, &value)); - *words = *words * 256 + value; - RIE (sanei_genesys_read_register (dev, 0x44, &value)); - *words = *words * 256 + value; - RIE (sanei_genesys_read_register (dev, 0x45, &value)); - *words = *words * 256 + value; - break; - - default: - RIE (sanei_genesys_read_register (dev, 0x44, &value)); - *words = value; - RIE (sanei_genesys_read_register (dev, 0x43, &value)); - *words += (value * 256); - RIE (sanei_genesys_read_register (dev, 0x42, &value)); - if (dev->model->asic_type == GENESYS_GL646) - *words += ((value & 0x03) * 256 * 256); - else - *words += ((value & 0x0f) * 256 * 256); - } - - DBG (DBG_proc, "%s: %d words\n", __func__, *words); - DBGCOMPLETED; - return SANE_STATUS_GOOD; -} - -/** read the number of lines scanned - * ie registers 4b-4c-4d - */ -SANE_Status -sanei_genesys_read_scancnt (Genesys_Device * dev, unsigned int *words) -{ - SANE_Status status; - uint8_t value; - - DBG (DBG_proc, "sanei_genesys_read_scancnt: start\n"); - - if (dev->model->asic_type == GENESYS_GL124) - { - RIE (sanei_genesys_read_hregister (dev, 0x10b, &value)); - *words = (value & 0x0f) << 16; - RIE (sanei_genesys_read_hregister (dev, 0x10c, &value)); - *words += (value << 8); - RIE (sanei_genesys_read_hregister (dev, 0x10d, &value)); - *words += value; - } - else - { - RIE (sanei_genesys_read_register (dev, 0x4d, &value)); - *words = value; - RIE (sanei_genesys_read_register (dev, 0x4c, &value)); - *words += (value * 256); - RIE (sanei_genesys_read_register (dev, 0x4b, &value)); - if (dev->model->asic_type == GENESYS_GL646) - *words += ((value & 0x03) * 256 * 256); - else - *words += ((value & 0x0f) * 256 * 256); - } - - DBG (DBG_proc, "sanei_genesys_read_scancnt: %d lines\n", *words); - return SANE_STATUS_GOOD; -} - -/** - * Find register in set - * @param regs register set to search - * @param addr addres of the searched register - * @return a Genesys_Register_Set pointer corresponding to the required - * address in ASIC space. Or NULL if not found. - */ -Genesys_Register_Set * -sanei_genesys_get_address (Genesys_Register_Set * regs, uint16_t addr) -{ - int i; - for (i = 0; i < GENESYS_MAX_REGS; i++) - { - if (regs[i].address == addr) - return ®s[i]; - } - DBG (DBG_error, "sanei_genesys_get_address: failed to find address for register 0x%02x, crash expected !\n",addr); - return NULL; -} - -/** - * set a 16 bit value in the given register set. - * @param regs register set where to set values - * @param addr address of the first register index to set - * @param value value to set - * @return SANE_STATUS_INVAL if the index doesn't exist in register set - */ -SANE_Status -sanei_genesys_set_double(Genesys_Register_Set *regs, uint16_t addr, uint16_t value) -{ - Genesys_Register_Set *r; - - /* high byte */ - r = sanei_genesys_get_address (regs, addr); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - r->value = HIBYTE (value); - - /* low byte */ - r = sanei_genesys_get_address (regs, addr+1); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - r->value = LOBYTE (value); - - return SANE_STATUS_GOOD; -} - -/** - * set a 24 bit value in the given register set. - * @param regs register set where to set values - * @param addr address of the first register index to set - * @param value value to set - * @return SANE_STATUS_INVAL if the index doesn't exist in register set - */ -SANE_Status -sanei_genesys_set_triple(Genesys_Register_Set *regs, uint16_t addr, uint32_t value) -{ - Genesys_Register_Set *r; - - /* low byte of highword */ - r = sanei_genesys_get_address (regs, addr); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - r->value = LOBYTE (HIWORD(value)); - - /* high byte of low word */ - r = sanei_genesys_get_address (regs, addr+1); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - r->value = HIBYTE (LOWORD(value)); - - /* low byte of low word */ - r = sanei_genesys_get_address (regs, addr+2); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - r->value = LOBYTE (LOWORD(value)); - - return SANE_STATUS_GOOD; -} - -/** - * get a 16 bit value in the given register set. - * @param regs register set where to read values - * @param addr address of the first register index to read - * @param value value to set - * @return SANE_STATUS_INVAL if the index doesn't exist in register set - */ -SANE_Status -sanei_genesys_get_double(Genesys_Register_Set *regs, uint16_t addr, uint16_t *value) -{ - Genesys_Register_Set *r; - uint16_t result=0; - - /* high byte */ - r = sanei_genesys_get_address (regs, addr); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - result=r->value<<8; - - /* low byte */ - r = sanei_genesys_get_address (regs, addr+1); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - result+=r->value; - - *value=result; - return SANE_STATUS_GOOD; -} - -/** - * get a 24 bit value in the given register set. - * @param regs register set where to read values - * @param addr address of the first register index to read - * @param value value to set - * @return SANE_STATUS_INVAL if the index doesn't exist in register set - */ -SANE_Status -sanei_genesys_get_triple(Genesys_Register_Set *regs, uint16_t addr, uint32_t *value) -{ - Genesys_Register_Set *r; - uint32_t result=0; - - /* low byte of highword */ - r = sanei_genesys_get_address (regs, addr); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - result=r->value<<16; - - /* high byte of low word */ - r = sanei_genesys_get_address (regs, addr+1); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - result+=(r->value<<8); - - /* low byte of low word */ - r = sanei_genesys_get_address (regs, addr+2); - if(r==NULL) - { - return SANE_STATUS_INVAL; - } - result+=r->value; - - *value=result; - return SANE_STATUS_GOOD; -} - -/** @brief Check if the scanner's internal data buffer is empty - * @param *dev device to test for data - * @param *empty return value - * @return empty will be set to SANE_TRUE if there is no scanned data. - **/ -SANE_Status -sanei_genesys_test_buffer_empty (Genesys_Device * dev, SANE_Bool * empty) -{ - uint8_t val = 0; - SANE_Status status; - - usleep(1000); - status = sanei_genesys_get_status (dev, &val); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_test_buffer_empty: failed to read buffer status: %s\n", - sane_strstatus (status)); - return status; - } - - if (dev->model->cmd_set->test_buffer_empty_bit (val)) - { - /* fix timing issue on USB3 (or just may be too fast) hardware - * spotted by John S. Weber <jweber53@gmail.com> - */ - usleep(1000); - DBG (DBG_io2, "sanei_genesys_test_buffer_empty: buffer is empty\n"); - *empty = SANE_TRUE; - return SANE_STATUS_GOOD; - } - - *empty = SANE_FALSE; - - DBG (DBG_io, "sanei_genesys_test_buffer_empty: buffer is filled\n"); - return SANE_STATUS_GOOD; -} - - -/* Read data (e.g scanned image) from scan buffer */ -SANE_Status -sanei_genesys_read_data_from_scanner (Genesys_Device * dev, uint8_t * data, - size_t size) -{ - SANE_Status status; - int time_count = 0; - unsigned int words = 0; - - DBG (DBG_proc, "sanei_genesys_read_data_from_scanner (size = %lu bytes)\n", - (u_long) size); - - if (size & 1) - DBG (DBG_info, - "WARNING sanei_genesys_read_data_from_scanner: odd number of bytes\n"); - - /* wait until buffer not empty for up to 5 seconds */ - do - { - status = sanei_genesys_read_valid_words (dev, &words); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_read_data_from_scanner: checking for empty buffer failed: %s\n", - sane_strstatus (status)); - return status; - } - if (words == 0) - { - usleep (10000); /* wait 10 msec */ - time_count++; - } - } - while ((time_count < 2500*2) && (words == 0)); - - if (words == 0) /* timeout, buffer does not get filled */ - { - DBG (DBG_error, - "sanei_genesys_read_data_from_scanner: timeout, buffer does not get filled\n"); - return SANE_STATUS_IO_ERROR; - } - - status = dev->model->cmd_set->bulk_read_data (dev, 0x45, data, size); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_read_data_from_scanner: reading bulk data failed: %s\n", - sane_strstatus (status)); - return status; - } - - DBG (DBG_proc, "sanei_genesys_read_data_from_scanner: completed\n"); - return SANE_STATUS_GOOD; -} -SANE_Status -sanei_genesys_read_feed_steps (Genesys_Device * dev, unsigned int *steps) -{ - SANE_Status status; - uint8_t value; - - DBG (DBG_proc, "sanei_genesys_read_feed_steps\n"); - - if (dev->model->asic_type == GENESYS_GL124) - { - RIE (sanei_genesys_read_hregister (dev, 0x108, &value)); - *steps = (value & 0x1f) << 16; - RIE (sanei_genesys_read_hregister (dev, 0x109, &value)); - *steps += (value << 8); - RIE (sanei_genesys_read_hregister (dev, 0x10a, &value)); - *steps += value; - } - else - { - RIE (sanei_genesys_read_register (dev, 0x4a, &value)); - *steps = value; - RIE (sanei_genesys_read_register (dev, 0x49, &value)); - *steps += (value * 256); - RIE (sanei_genesys_read_register (dev, 0x48, &value)); - if (dev->model->asic_type == GENESYS_GL646) - *steps += ((value & 0x03) * 256 * 256); - else if (dev->model->asic_type == GENESYS_GL841) - *steps += ((value & 0x0f) * 256 * 256); - else - *steps += ((value & 0x1f) * 256 * 256); - } - - DBG (DBG_proc, "sanei_genesys_read_feed_steps: %d steps\n", *steps); - return SANE_STATUS_GOOD; -} - - -/** - * Write to many registers at once - * Note: sequential call to write register, no effective - * bulk write implemented. - * @param dev device to write to - * @param reg pointer to an array of registers - * @param elems size of the array - */ -SANE_Status -sanei_genesys_bulk_write_register (Genesys_Device * dev, - Genesys_Register_Set * reg, - size_t elems) -{ - SANE_Status status = SANE_STATUS_GOOD; - size_t i; - - for (i = 0; i < elems && status == SANE_STATUS_GOOD; i++) - { - if (reg[i].address != 0) - { - status = - sanei_genesys_write_register (dev, reg[i].address, reg[i].value); - } - } - - DBG (DBG_io, "%s: wrote %lu registers\n", __func__, (u_long) elems); - return status; -} - - - -/** - * writes a block of data to AHB - * @param dn USB device index - * @param usb_mode usb mode : -1, fake usb, 1 usb 1.1, 2 usb 2.0 - * @param addr AHB address to write to - * @param size size of the chunk of data - * @param data pointer to the data to write - */ -SANE_Status -sanei_genesys_write_ahb (SANE_Int dn, int usb_mode, uint32_t addr, uint32_t size, uint8_t * data) -{ - uint8_t outdata[8]; - size_t written,blksize; - SANE_Status status = SANE_STATUS_GOOD; - int i; - char msg[100]="AHB="; - - outdata[0] = addr & 0xff; - outdata[1] = ((addr >> 8) & 0xff); - outdata[2] = ((addr >> 16) & 0xff); - outdata[3] = ((addr >> 24) & 0xff); - outdata[4] = (size & 0xff); - outdata[5] = ((size >> 8) & 0xff); - outdata[6] = ((size >> 16) & 0xff); - outdata[7] = ((size >> 24) & 0xff); - - if (DBG_LEVEL >= DBG_io) - { - for (i = 0; i < 8; i++) - { - sprintf (msg+strlen(msg), " 0x%02x", outdata[i]); - } - DBG (DBG_io, "%s: write(0x%08x,0x%08x)\n", __func__, addr,size); - DBG (DBG_io, "%s: %s\n", __func__, msg); - } - - /* no effective write if fake USB */ - if(usb_mode<0) - { - DBGCOMPLETED; - return status; - } - - /* write addr and size for AHB */ - status = - sanei_usb_control_msg (dn, REQUEST_TYPE_OUT, REQUEST_BUFFER, VALUE_BUFFER, - 0x01, 8, outdata); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, "sanei_genesys_write_ahb: failed while setting addr and size: %s\n", - sane_strstatus (status)); - return status; - } - - /* write actual data */ - written = 0; - do - { - if (size - written > BULKOUT_MAXSIZE) - { - blksize = BULKOUT_MAXSIZE; - } - else - { - blksize = size - written; - } - status = sanei_usb_write_bulk (dn, data + written, &blksize); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "sanei_genesys_write_ahb: failed while writing bulk data: %s\n", - sane_strstatus (status)); - return status; - } - written += blksize; - } - while (written < size); - - return status; -} - -/** @brief generates gamma buffer to transfer - * Generates gamma table buffer to send to ASIC. Applies - * contrast and brightness if set. - * @param dev device to set up - * @param bits number of bits used by gamma - * @param max value for gamma - * @param size of the gamma table - * @param gamma allocated gamma buffer to fill - * @returns SANE_STATUS_GOOD or SANE_STATUS_NO_MEM - */ -SANE_Status sanei_genesys_generate_gamma_buffer(Genesys_Device * dev, - int bits, - int max, - int size, - uint8_t *gamma) -{ - int i; - uint16_t value, *lut=NULL; - - if(dev->settings.contrast!=0 || dev->settings.brightness!=0) - { - lut=(uint16_t *)malloc(65536*2); - if(lut==NULL) - { - free(gamma); - return SANE_STATUS_NO_MEM; - } - sanei_genesys_load_lut((unsigned char *)lut, - bits, - bits, - 0, - max, - dev->settings.contrast, - dev->settings.brightness); - for (i = 0; i < size; i++) - { - value=dev->sensor.gamma_table[GENESYS_RED][i]; - value=lut[value]; - gamma[i * 2 + size * 0 + 0] = value & 0xff; - gamma[i * 2 + size * 0 + 1] = (value >> 8) & 0xff; - - value=dev->sensor.gamma_table[GENESYS_GREEN][i]; - value=lut[value]; - gamma[i * 2 + size * 2 + 0] = value & 0xff; - gamma[i * 2 + size * 2 + 1] = (value >> 8) & 0xff; - - value=dev->sensor.gamma_table[GENESYS_BLUE][i]; - value=lut[value]; - gamma[i * 2 + size * 4 + 0] = value & 0xff; - gamma[i * 2 + size * 4 + 1] = (value >> 8) & 0xff; - } - } - else - { - for (i = 0; i < size; i++) - { - value=dev->sensor.gamma_table[GENESYS_RED][i]; - gamma[i * 2 + size * 0 + 0] = value & 0xff; - gamma[i * 2 + size * 0 + 1] = (value >> 8) & 0xff; - - value=dev->sensor.gamma_table[GENESYS_GREEN][i]; - gamma[i * 2 + size * 2 + 0] = value & 0xff; - gamma[i * 2 + size * 2 + 1] = (value >> 8) & 0xff; - - value=dev->sensor.gamma_table[GENESYS_BLUE][i]; - gamma[i * 2 + size * 4 + 0] = value & 0xff; - gamma[i * 2 + size * 4 + 1] = (value >> 8) & 0xff; - } - } - - - if(lut!=NULL) - { - free(lut); - } - - return SANE_STATUS_GOOD; -} - - -/** @brief send gamma table to scanner - * This function sends generic gamma table (ie ones built with - * provided gamma) or the user defined one if provided by - * fontend. Used by gl846+ ASICs - * @param dev device to write to - */ -SANE_Status -sanei_genesys_send_gamma_table (Genesys_Device * dev) -{ - int size; - int i; - uint8_t *gamma, val; - SANE_Status status; - - DBGSTART; - - size = 256 + 1; - - /* allocate temporary gamma tables: 16 bits words, 3 channels */ - gamma = (uint8_t *) malloc (size * 2 * 3); - if (!gamma) - { - return SANE_STATUS_NO_MEM; - } - memset(gamma, 255, size*3*2); - - RIE(sanei_genesys_generate_gamma_buffer(dev, 16, 65535, size, gamma)); - - /* loop sending gamma tables NOTE: 0x01000000 not 0x10000000 */ - for (i = 0; i < 3; i++) - { - /* clear corresponding GMM_N bit */ - RIEF (sanei_genesys_read_register (dev, 0xbd, &val), gamma); - val &= ~(0x01 << i); - RIEF (sanei_genesys_write_register (dev, 0xbd, val), gamma); - - /* clear corresponding GMM_F bit */ - RIEF (sanei_genesys_read_register (dev, 0xbe, &val), gamma); - val &= ~(0x01 << i); - RIEF (sanei_genesys_write_register (dev, 0xbe, val), gamma); - - /* set GMM_Z */ - RIEF (sanei_genesys_write_register (dev, 0xc5+2*i, gamma[size*2*i+1]), gamma); - RIEF (sanei_genesys_write_register (dev, 0xc6+2*i, gamma[size*2*i]), gamma); - - status = sanei_genesys_write_ahb (dev->dn, dev->usb_mode, 0x01000000 + 0x200 * i, (size-1) * 2, gamma + i * size * 2+2); - if (status != SANE_STATUS_GOOD) - { - free (gamma); - DBG (DBG_error, - "%s: write to AHB failed writing table %d (%s)\n", __func__, - i, sane_strstatus (status)); - } - } - - free (gamma); - DBGCOMPLETED; - return status; -} - -/** @brief initialize device - * Initialize backend and ASIC : registers, motor tables, and gamma tables - * then ensure scanner's head is at home. Designed for gl846+ ASICs. - * Detects cold boot (ie first boot since device plugged) in this case - * an extensice setup up is done at hardware level. - * - * @param dev device to initialize - * @param max_regs umber of maximum used registers - * @return SANE_STATUS_GOOD in case of success - */ -SANE_Status -sanei_genesys_asic_init (Genesys_Device * dev, int max_regs) -{ - SANE_Status status; - uint8_t val; - SANE_Bool cold = SANE_TRUE; - int size; /**< size of the device's gamma table */ - int i; - - DBGSTART; - - /* URB 16 control 0xc0 0x0c 0x8e 0x0b len 1 read 0x00 */ - if(dev->usb_mode>=0) - { - status = sanei_usb_control_msg (dev->dn, REQUEST_TYPE_IN, REQUEST_REGISTER, VALUE_GET_REGISTER, 0x00, 1, &val); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, "%s: request register failed %s\n", __func__, - sane_strstatus (status)); - return status; - } - DBG (DBG_io2, "%s: value=0x%02x\n", __func__, val); - DBG (DBG_info, "%s: device is %s\n", __func__, (val & 0x08) ? "USB 1.0" : "USB2.0"); - if (val & 0x08) - { - dev->usb_mode = 1; - } - else - { - dev->usb_mode = 2; - } - } - - /* setup gamma tables */ - size = 256; - for(i=0;i<3;i++) - { - FREE_IFNOT_NULL (dev->sensor.gamma_table[i]); - dev->sensor.gamma_table[i] = (uint16_t *) malloc (2 * size); - if (dev->sensor.gamma_table[i] == NULL) - { - DBG (DBG_error, "%s: could not allocate memory for gamma table %d\n", - __func__, i); - return SANE_STATUS_NO_MEM; - } - sanei_genesys_create_gamma_table (dev->sensor.gamma_table[i], - size, - 65535, - 65535, - dev->sensor.gamma[i]); - } - - /* check if the device has already been initialized and powered up - * we read register 6 and check PWRBIT, if reset scanner has been - * freshly powered up. This bit will be set to later so that following - * reads can detect power down/up cycle*/ - RIE (sanei_genesys_read_register (dev, 0x06, &val)); - /* test for POWER bit */ - if (val & 0x10) - { - cold = SANE_FALSE; - } - DBG (DBG_info, "%s: device is %s\n", __func__, cold ? "cold" : "warm"); - - /* don't do anything if backend is initialized and hardware hasn't been - * replug */ - if (dev->already_initialized && !cold) - { - DBG (DBG_info, "%s: already initialized, nothing to do\n", __func__); - return SANE_STATUS_GOOD; - } - - /* set up hardware and registers */ - RIE (dev->model->cmd_set->asic_boot (dev, cold)); - - /* now hardware part is OK, set up device struct */ - FREE_IFNOT_NULL (dev->white_average_data); - FREE_IFNOT_NULL (dev->dark_average_data); - - dev->settings.color_filter = 0; - - /* duplicate initial values into calibration registers */ - memcpy (dev->calib_reg, dev->reg, max_regs * sizeof (Genesys_Register_Set)); - - /* Set analog frontend */ - RIE (dev->model->cmd_set->set_fe (dev, AFE_INIT)); - - dev->oe_buffer.buffer = NULL; - dev->already_initialized = SANE_TRUE; - - /* Move to home if needed */ - RIE (dev->model->cmd_set->slow_back_home (dev, SANE_TRUE)); - dev->scanhead_position_in_steps = 0; - - /* Set powersaving (default = 15 minutes) */ - RIE (dev->model->cmd_set->set_powersaving (dev, 15)); - - DBGCOMPLETED; - return status; -} - -/** - * Wait for the scanning head to park - */ -SANE_Status -sanei_genesys_wait_for_home (Genesys_Device * dev) -{ - SANE_Status status; - uint8_t val; - int loop; - int max=300; - - DBGSTART; - - /* clear the parking status whatever the outcome of the function */ - dev->parking=SANE_FALSE; - - /* read initial status, if head isn't at home and motor is on - * we are parking, so we wait. - * gl847/gl124 need 2 reads for reliable results */ - 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; - } - usleep (10000); - 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 at home, return */ - if(val & HOMESNR) - { - DBG (DBG_info, - "%s: already at home\n", __func__); - return status; - } - - /* loop for 30 s max, polling home sensor */ - loop = 0; - do - { - /* wait 100 ms */ - usleep (100000); - status = sanei_genesys_get_status (dev, &val); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, - "%s: failed to read home sensor: %s\n", __func__, - sane_strstatus (status)); - return status; - } - if (DBG_LEVEL >= DBG_io2) - { - sanei_genesys_print_status (val); - } - ++loop; - } - while (loop < max && !(val & HOMESNR) && status == SANE_STATUS_GOOD); - - /* if after the timeout, head is still not parked, error out */ - if(loop >= max && !(val & HOMESNR) && status == SANE_STATUS_GOOD) - { - DBG (DBG_error, "%s: failed to reach park position %ds\n", __func__, max/10); - return SANE_STATUS_IO_ERROR; - } - - DBGCOMPLETED; - return status; -} - -/**@brief compute hardware sensor dpi to use - * compute the sensor hardware dpi based on target resolution. - * A lower dpihw enable faster scans. - * @param dev device used for the scan - * @param xres x resolution of the scan - * @return the hardware dpi to use - */ -int sanei_genesys_compute_dpihw(Genesys_Device *dev, int xres) -{ - /* some scanners use alxways hardware dpi for sensor */ - if (dev->model->flags & GENESYS_FLAG_FULL_HWDPI_MODE) - { - return dev->sensor.optical_res; - } - - /* can't be below 600 dpi */ - if (xres <= 600) - { - return 600; - } - if (xres <= dev->sensor.optical_res / 4) - { - return dev->sensor.optical_res / 4; - } - if (xres <= dev->sensor.optical_res / 2) - { - return dev->sensor.optical_res / 2; - } - return dev->sensor.optical_res; -} - -/** @brief motor profile - * search for the database of motor profiles and get the best one. Each - * profile is at full step and at a reference exposure. Use first entry - * by default. - * @param motors motor profile database - * @param motor_type motor id - * @param exposure exposure time - * @return a pointer to a Motor_Profile struct - */ -Motor_Profile *sanei_genesys_get_motor_profile(Motor_Profile *motors, int motor_type, int exposure) -{ - unsigned int i; - int idx; - - i=0; - idx=-1; - while(motors[i].exposure!=0) - { - /* exact match */ - if(motors[i].motor_type==motor_type && motors[i].exposure==exposure) - { - return &(motors[i]); - } - - /* closest match */ - if(motors[i].motor_type==motor_type) - { - /* if profile exposure is higher than the required one, - * the entry is a candidate for the closest match */ - if(motors[i].exposure>=exposure) - { - if(idx<0) - { - /* no match found yet */ - idx=i; - } - else - { - /* test for better match */ - if(motors[i].exposure<motors[idx].exposure) - { - idx=i; - } - } - } - } - i++; - } - - /* default fallback */ - if(idx<0) - { - DBG (DBG_warn,"%s: using default motor profile\n",__func__); - idx=0; - } - - return &(motors[idx]); -} - -/**@brief compute motor step type to use - * compute the step type (full, half, quarter, ...) to use based - * on target resolution - * @param motors motor profile database - * @param motor_type motor id - * @param exposure sensor exposure - * @return 0 for full step - * 1 for half step - * 2 for quarter step - * 3 for eighth step - */ -int sanei_genesys_compute_step_type(Motor_Profile *motors, - int motor_type, - int exposure) -{ -Motor_Profile *profile; - - profile=sanei_genesys_get_motor_profile(motors, motor_type, exposure); - return profile->step_type; -} - -/** @brief generate slope table - * Generate the slope table to use for the scan using a reference slope - * table. - * @param slope pointer to the slope table to fill - * @param steps pointer to return used step number - * @param dpi desired motor resolution - * @param exposure exposure used - * @param base_dpi base resolution of the motor - * @param step_type step type used for scan - * @param factor shrink factor for the slope - * @param motor_type motor id - * @param motors motor profile database - */ -int sanei_genesys_slope_table(uint16_t *slope, - int *steps, - int dpi, - int exposure, - int base_dpi, - int step_type, - int factor, - int motor_type, - Motor_Profile *motors) -{ -int sum, i; -uint16_t target,current; -Motor_Profile *profile; - - /* required speed */ - target=((exposure * dpi) / base_dpi)>>step_type; - DBG (DBG_io2, "%s: exposure=%d, dpi=%d, target=%d\n", __func__, exposure, dpi, target); - - /* fill result with target speed */ - for(i=0;i<SLOPE_TABLE_SIZE;i++) - slope[i]=target; - - profile=sanei_genesys_get_motor_profile(motors, motor_type, exposure); - - /* use profile to build table */ - i=0; - sum=0; - - /* first step is always used unmodified */ - current=profile->table[0]; - - /* loop on profile copying and apply step type */ - while(profile->table[i]!=0 && current>=target) - { - slope[i]=current; - sum+=slope[i]; - i++; - current=profile->table[i]>>step_type; - } - - /* ensure last step is required speed in case profile doesn't contain it */ - if(current!=0 && current<target) - { - slope[i]=target; - sum+=slope[i]; - i++; - } - - /* range checking */ - if(profile->table[i]==0 && DBG_LEVEL >= DBG_warn && current>target) - { - DBG (DBG_warn,"%s: short slope table, failed to reach %d. target too low ?\n",__func__,target); - } - if(i<3 && DBG_LEVEL >= DBG_warn) - { - DBG (DBG_warn,"%s: short slope table, failed to reach %d. target too high ?\n",__func__,target); - } - - /* align on factor */ - while(i%factor!=0) - { - slope[i+1]=slope[i]; - sum+=slope[i]; - i++; - } - - /* ensure minimal slope size */ - while(i<2*factor) - { - slope[i+1]=slope[i]; - sum+=slope[i]; - i++; - } - - /* return used steps and acceleration sum */ - *steps=i/factor; - return sum; -} - -/** @brief returns the lowest possible ydpi for the device - * Parses device entry to find lowest motor dpi. - * @param dev device description - * @return lowest motor resolution - */ -int sanei_genesys_get_lowest_ydpi(Genesys_Device *dev) -{ - int min=20000; - int i=0; - - while(dev->model->ydpi_values[i]!=0) - { - if(dev->model->ydpi_values[i]<min) - { - min=dev->model->ydpi_values[i]; - } - i++; - } - return min; -} - -/** @brief returns the lowest possible dpi for the device - * Parses device entry to find lowest motor or sensor dpi. - * @param dev device description - * @return lowest motor resolution - */ -int sanei_genesys_get_lowest_dpi(Genesys_Device *dev) -{ - int min=20000; - int i=0; - - while(dev->model->ydpi_values[i]!=0) - { - if(dev->model->ydpi_values[i]<min) - { - min=dev->model->ydpi_values[i]; - } - i++; - } - i=0; - while(dev->model->xdpi_values[i]!=0) - { - if(dev->model->xdpi_values[i]<min) - { - min=dev->model->xdpi_values[i]; - } - i++; - } - return min; -} - -/** @brief check is a cache entry may be used - * Compares current settings with the cache entry and return - * SANE_TRUE if they are compatible. - * A calibration cache is compatible if color mode and x dpi match the user - * requested scan. In the case of CIS scanners, dpi isn't a criteria. - * flatbed cache entries are considred too old and then expires if they - * are older than the expiration time option, forcing calibration at least once - * then given time. */ -SANE_Status -sanei_genesys_is_compatible_calibration (Genesys_Device * dev, - Genesys_Calibration_Cache * cache, - int for_overwrite) -{ -#ifdef HAVE_SYS_TIME_H - struct timeval time; -#endif - int compatible = 1, resolution; - SANE_Status status; - - DBGSTART; - - if(dev->model->cmd_set->calculate_current_setup==NULL) - { - DBG (DBG_proc, "%s: no calculate_setup, non compatible cache\n", __func__); - return SANE_STATUS_UNSUPPORTED; - } - - status = dev->model->cmd_set->calculate_current_setup (dev); - if (status != SANE_STATUS_GOOD) - { - DBG (DBG_error, "%s: failed to calculate current setup: %s\n", __func__, - sane_strstatus (status)); - return status; - } - dev->current_setup.scan_method = dev->settings.scan_method; - - DBG (DBG_proc, "%s: checking\n", __func__); - - /* a calibration cache is compatible if color mode and x dpi match the user - * requested scan. In the case of CIS scanners, dpi isn't a criteria */ - if (dev->model->is_cis == SANE_FALSE) - { - resolution = dev->settings.xres; - if(resolution>dev->sensor.optical_res) - { - resolution=dev->sensor.optical_res; - } - compatible = (resolution == ((int) cache->used_setup.xres)); - } - else - { - resolution=sanei_genesys_compute_dpihw(dev,dev->settings.xres); - compatible = (resolution == ((int) sanei_genesys_compute_dpihw(dev,cache->used_setup.xres))); - } - DBG (DBG_io, "%s: after resolution check current compatible=%d\n", __func__, compatible); - if (dev->current_setup.half_ccd != cache->used_setup.half_ccd) - { - DBG (DBG_io, "%s: half_ccd=%d, used=%d\n", __func__, - dev->current_setup.half_ccd, cache->used_setup.half_ccd); - compatible = 0; - } - if (dev->current_setup.scan_method != cache->used_setup.scan_method) - { - DBG (DBG_io, "%s: current method=%d, used=%d\n", __func__, - dev->current_setup.scan_method, cache->used_setup.scan_method); - compatible = 0; - } - if (!compatible) - { - DBG (DBG_proc, "%s: completed, non compatible cache\n", __func__); - return SANE_STATUS_UNSUPPORTED; - } - - /* a cache entry expires after afetr expiration time for non sheetfed scanners */ - /* this is not taken into account when overwriting cache entries */ -#ifdef HAVE_SYS_TIME_H - if(for_overwrite == SANE_FALSE && dev->settings.expiration_time >=0) - { - gettimeofday (&time, NULL); - if ((time.tv_sec - cache->last_calibration > dev->settings.expiration_time*60) - && (dev->model->is_sheetfed == SANE_FALSE) - && (dev->settings.scan_method == SCAN_METHOD_FLATBED)) - { - DBG (DBG_proc, "%s: expired entry, non compatible cache\n", __func__); - return SANE_STATUS_UNSUPPORTED; - } - } -#endif - - DBGCOMPLETED; - return SANE_STATUS_GOOD; -} - - -/** @brief compute maximum line distance shift - * compute maximum line distance shift for the motor and sensor - * combination. Line distance shift is the distance between different - * color component of CCD sensors. Since these components aren't at - * the same physical place, they scan diffrent lines. Software must - * take this into account to accurately mix color data. - * @param dev device session to compute max_shift for - * @param channels number of color channels for the scan - * @param yres motor resolution used for the scan - * @param flags scan flags - * @return 0 or line distance shift - */ -int sanei_genesys_compute_max_shift(Genesys_Device *dev, - int channels, - int yres, - int flags) -{ - int max_shift; - - max_shift=0; - if (channels > 1 && !(flags & SCAN_FLAG_IGNORE_LINE_DISTANCE)) - { - max_shift = dev->ld_shift_r; - if (dev->ld_shift_b > max_shift) - max_shift = dev->ld_shift_b; - if (dev->ld_shift_g > max_shift) - max_shift = dev->ld_shift_g; - max_shift = (max_shift * yres) / dev->motor.base_ydpi; - } - return max_shift; -} - -/** @brief build lookup table for digital enhancements - * Function to build a lookup table (LUT), often - used by scanners to implement brightness/contrast/gamma - or by backends to speed binarization/thresholding - - offset and slope inputs are -127 to +127 - - slope rotates line around central input/output val, - 0 makes horizontal line - - pos zero neg - . x . . x - . x . . x - out . x .xxxxxxxxxxx . x - . x . . x - ....x....... ............ .......x.... - in in in - - offset moves line vertically, and clamps to output range - 0 keeps the line crossing the center of the table - - high low - . xxxxxxxx . - . x . - out x . x - . . x - ............ xxxxxxxx.... - in in - - out_min/max provide bounds on output values, - useful when building thresholding lut. - 0 and 255 are good defaults otherwise. - * @param lut pointer where to store the generated lut - * @param in_bits number of bits for in values - * @param out_bits number of bits of out values - * @param out_min minimal out value - * @param out_max maximal out value - * @param slope slope of the generated data - * @param offset offset of the generated data - */ -SANE_Status -sanei_genesys_load_lut (unsigned char * lut, - int in_bits, - int out_bits, - int out_min, - int out_max, - int slope, - int offset) -{ - SANE_Status ret = SANE_STATUS_GOOD; - int i, j; - double shift, rise; - int max_in_val = (1 << in_bits) - 1; - int max_out_val = (1 << out_bits) - 1; - uint8_t *lut_p8 = lut; - uint16_t *lut_p16 = (uint16_t *) lut; - - DBGSTART; - - /* slope is converted to rise per unit run: - * first [-127,127] to [-.999,.999] - * then to [-PI/4,PI/4] then [0,PI/2] - * then take the tangent (T.O.A) - * then multiply by the normal linear slope - * because the table may not be square, i.e. 1024x256*/ - rise = tan ((double) slope / 128 * M_PI_4 + M_PI_4) * max_out_val / max_in_val; - - /* line must stay vertically centered, so figure - * out vertical offset at central input value */ - shift = (double) max_out_val / 2 - (rise * max_in_val / 2); - - /* convert the user offset setting to scale of output - * first [-127,127] to [-1,1] - * then to [-max_out_val/2,max_out_val/2]*/ - shift += (double) offset / 127 * max_out_val / 2; - - for (i = 0; i <= max_in_val; i++) - { - j = rise * i + shift; - - /* cap data to required range */ - if (j < out_min) - { - j = out_min; - } - else if (j > out_max) - { - j = out_max; - } - - /* copy result according to bit depth */ - if (out_bits <= 8) - { - *lut_p8 = j; - lut_p8++; - } - else - { - *lut_p16 = j; - lut_p16++; - } - } - - DBGCOMPLETED; - return ret; -} - -/* vim: set sw=2 cino=>2se-1sn-1s{s^-1st0(0u0 smarttab expandtab: */ |