kopia lustrzana https://gitlab.com/sane-project/backends
298 wiersze
9.3 KiB
C
298 wiersze
9.3 KiB
C
/* sane - Scanner Access Now Easy.
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Copyright (C) 2007-2012 stef.dev@free.fr
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This file is part of the SANE package.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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As a special exception, the authors of SANE give permission for
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additional uses of the libraries contained in this release of SANE.
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The exception is that, if you link a SANE library with other files
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to produce an executable, this does not by itself cause the
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resulting executable to be covered by the GNU General Public
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License. Your use of that executable is in no way restricted on
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account of linking the SANE library code into it.
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This exception does not, however, invalidate any other reasons why
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the executable file might be covered by the GNU General Public
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License.
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If you submit changes to SANE to the maintainers to be included in
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a subsequent release, you agree by submitting the changes that
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those changes may be distributed with this exception intact.
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If you write modifications of your own for SANE, it is your choice
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whether to permit this exception to apply to your modifications.
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If you do not wish that, delete this exception notice.
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*/
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#ifndef RTS8891_LOW_H
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#define RTS8891_LOW_H
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#include <stddef.h>
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#include "../include/sane/sane.h"
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#define DBG_error0 0 /* errors/warnings printed even with devuglevel 0 */
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#define DBG_error 1 /* fatal errors */
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#define DBG_init 2 /* initialization and scanning time messages */
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#define DBG_warn 3 /* warnings and non-fatal errors */
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#define DBG_info 4 /* informational messages */
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#define DBG_proc 5 /* starting/finishing functions */
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#define DBG_io 6 /* io functions */
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#define DBG_io2 7 /* io functions that are called very often */
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#define DBG_data 8 /* log image data */
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/* Flags */
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#define RTS8891_FLAG_UNTESTED (1 << 0) /* Print a warning for these scanners */
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#define RTS8891_FLAG_EMULATED_GRAY_MODE (2 << 0) /* gray scans are emulated using comor modes */
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#define LOWORD(x) ((uint16_t)(x & 0xffff))
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#define HIWORD(x) ((uint16_t)(x >> 16))
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#define LOBYTE(x) ((uint8_t)((x) & 0xFF))
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#define HIBYTE(x) ((uint8_t)((x) >> 8))
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#define MAX_SCANNERS 32
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#define MAX_RESOLUTIONS 16
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#define SENSOR_TYPE_BARE 0 /* sensor for hp4470 sold bare */
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#define SENSOR_TYPE_XPA 1 /* sensor for hp4470 sold with XPA */
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#define SENSOR_TYPE_4400 2 /* sensor for hp4400 */
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#define SENSOR_TYPE_4400_BARE 3 /* sensor for hp4400 */
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#define SENSOR_TYPE_MAX 3 /* maximum sensor number value */
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/* Forward typedefs */
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typedef struct Rts8891_Device Rts8891_Device;
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#define SET_DOUBLE(regs,idx,value) regs[idx]=(SANE_Byte)((value)>>8); regs[idx-1]=(SANE_Byte)((value) & 0xff);
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/*
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* defines for RTS8891 registers name
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*/
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#define BUTTONS_REG2 0x1a
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#define LINK_REG 0xb1
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#define LAMP_REG 0xd9
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#define LAMP_BRIGHT_REG 0xda
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/* double reg (E6,E5) -> timing doubles when y resolution doubles
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* E6 is high byte, possibly exposure */
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#define EXPOSURE_REG 0xe6
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#define REG8180 0x81
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#define REG8382 0x83 /* holds REG8180+1 */
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#define REG8a89 0x8a /* holds REG8180+2 */
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/* this struc describes a particular model which is handled by the backend */
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/* available resolutions, physical goemetry, scanning area, ... */
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typedef struct Rts8891_Model
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{
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SANE_String_Const name;
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SANE_String_Const vendor;
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SANE_String_Const product;
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SANE_String_Const type;
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SANE_Int xdpi_values[MAX_RESOLUTIONS]; /* possible x resolutions */
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SANE_Int ydpi_values[MAX_RESOLUTIONS]; /* possible y resolutions */
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SANE_Int max_xdpi; /* physical maximum x dpi */
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SANE_Int max_ydpi; /* physical maximum y dpi */
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SANE_Int min_ydpi; /* physical minimum y dpi */
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SANE_Fixed x_offset; /* Start of scan area in mm */
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SANE_Fixed y_offset; /* Start of scan area in mm */
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SANE_Fixed x_size; /* Size of scan area in mm */
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SANE_Fixed y_size; /* Size of scan area in mm */
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SANE_Fixed x_offset_ta; /* Start of scan area in TA mode in mm */
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SANE_Fixed y_offset_ta; /* Start of scan area in TA mode in mm */
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SANE_Fixed x_size_ta; /* Size of scan area in TA mode in mm */
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SANE_Fixed y_size_ta; /* Size of scan area in TA mode in mm */
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/* Line-distance correction (in pixel at max optical dpi) for CCD scanners */
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SANE_Int ld_shift_r; /* red */
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SANE_Int ld_shift_g; /* green */
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SANE_Int ld_shift_b; /* blue */
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/* default sensor type */
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SANE_Int sensor;
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/* default gamma table */
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SANE_Word gamma[256];
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SANE_Int buttons; /* number of buttons for the scanner */
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char *button_name[11]; /* option names for buttons */
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char *button_title[11]; /* option titles for buttons */
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SANE_Word flags; /* allow per model behaviour control */
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} Rts8891_Model;
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/**
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* device specific configuration structure to hold option values */
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typedef struct Rts8891_Config
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{
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/**< index number in device table to override detection */
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SANE_Word modelnumber;
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/**< id of the snedor type, must match SENSOR_TYPE_* defines */
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SANE_Word sensornumber;
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/**< if true, use release/acquire to allow the same device
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* to be used by several frontends */
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SANE_Bool allowsharing;
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} Rts8891_Config;
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/**
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* device descriptor
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*/
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struct Rts8891_Device
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{
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/**< Next device in linked list */
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struct Rts8891_Device *next;
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/**< USB device number for libusb */
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SANE_Int devnum;
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SANE_String file_name;
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Rts8891_Model *model; /* points to a structure that decribes model specifics */
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SANE_Int sensor; /* sensor id */
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SANE_Bool initialized; /* true if device has been intialized */
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SANE_Bool needs_warming; /* true if device needs warming up */
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/* values detected during find origin */
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/* TODO these are currently unused after detection */
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SANE_Int left_offset; /* pixels to skip to be on left start of the scanning area */
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SANE_Int top_offset; /* lines to skip to be at top of the scanning area */
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/* gains from calibration */
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SANE_Int red_gain;
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SANE_Int green_gain;
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SANE_Int blue_gain;
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/* offsets from calibration */
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SANE_Int red_offset;
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SANE_Int green_offset;
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SANE_Int blue_offset;
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/* actual dpi used at hardware level may differ from the one
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* at SANE level */
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SANE_Int xdpi;
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SANE_Int ydpi;
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/* the effective scan area at hardware level may be different from
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* the one at the SANE level*/
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SANE_Int lines; /* lines to scan */
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SANE_Int pixels; /* width of scan area */
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SANE_Int bytes_per_line; /* number of bytes per line */
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SANE_Int xstart; /* x start coordinate */
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SANE_Int ystart; /* y start coordinate */
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/* line distance shift for the active scan */
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SANE_Int lds_r;
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SANE_Int lds_g;
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SANE_Int lds_b;
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/* threshold to give 0/1 nit in lineart */
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SANE_Int threshold;
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/* max value from lds_r, lds_g and lds_b */
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SANE_Int lds_max;
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/* amount of data needed to correct ripple effect at highest dpi */
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SANE_Int ripple;
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/* register set of the scanner */
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SANE_Int reg_count;
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SANE_Byte regs[255];
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/* shading calibration data */
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SANE_Byte *shading_data;
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/* data buffer read from scanner */
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SANE_Byte *scanned_data;
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/* size of the buffer */
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SANE_Int data_size;
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/* start of the data within scanned data */
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SANE_Byte *start;
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/* current pointer within scanned data */
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SANE_Byte *current;
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/* end of the data buffer */
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SANE_Byte *end;
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/**
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* amount of bytes read from scanner
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*/
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SANE_Int read;
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/**
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* total amount of bytes to read for the scan
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*/
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SANE_Int to_read;
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#ifdef HAVE_SYS_TIME_H
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/**
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* last scan time, used to detect if warming-up is needed
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*/
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struct timeval last_scan;
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/**
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* warming-up start time
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*/
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struct timeval start_time;
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#endif
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/**
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* device configuration options
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*/
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Rts8891_Config conf;
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};
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/*
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* This struct is used to build a static list of USB IDs and link them
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* to a struct that describes the corresponding model.
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*/
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typedef struct Rts8891_USB_Device_Entry
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{
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SANE_Word vendor_id; /**< USB vendor identifier */
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SANE_Word product_id; /**< USB product identifier */
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Rts8891_Model *model; /**< Scanner model information */
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} Rts8891_USB_Device_Entry;
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/* this function init the rts8891 library */
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void rts8891_lib_init (void);
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/***********************************/
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/* RTS8891 ASIC specific functions */
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/***********************************/
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/* this functions commits pending scan command */
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static SANE_Status rts8891_commit (SANE_Int devnum, SANE_Byte value);
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/**
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* move the head backward by a huge line number then poll home sensor until
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* head has get back home
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*/
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static SANE_Status rts8891_park (struct Rts8891_Device *device, SANE_Byte * regs);
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#endif /* not RTS8891_LOW_H */
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