kopia lustrzana https://gitlab.com/sane-project/backends
198 wiersze
6.3 KiB
C
198 wiersze
6.3 KiB
C
#ifndef CARDSCAN_H
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#define CARDSCAN_H
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/*
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* Part of SANE - Scanner Access Now Easy.
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* Please see opening comment in cardscan.c
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*/
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/* -------------------------------------------------------------------------
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* This option list has to contain all options for all scanners supported by
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* this driver. If a certain scanner cannot handle a certain option, there's
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* still the possibility to say so, later.
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*/
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enum scanner_Option
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{
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OPT_NUM_OPTS = 0,
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OPT_MODE_GROUP,
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OPT_MODE, /*mono/gray/color*/
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/* must come last: */
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NUM_OPTIONS
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};
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/* values common to calib and image data */
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#define HEADER_SIZE 64
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#define PIXELS_PER_LINE 1208
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/* values for calib data */
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#define CAL_COLOR_SIZE (PIXELS_PER_LINE * 3)
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#define CAL_GRAY_SIZE PIXELS_PER_LINE
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/* values for image data */
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#define MAX_PAPERLESS_LINES 210
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struct scanner
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{
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/* --------------------------------------------------------------------- */
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/* immutable values which are set during init of scanner. */
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struct scanner *next;
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char *device_name; /* The name of the scanner device for sane */
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/* --------------------------------------------------------------------- */
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/* immutable values which are set during inquiry probing of the scanner. */
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SANE_Device sane;
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char * vendor_name;
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char * product_name;
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/* --------------------------------------------------------------------- */
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/* immutable values which are set during reading of config file. */
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int has_cal_buffer;
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int lines_per_block;
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int color_block_size;
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int gray_block_size;
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/* --------------------------------------------------------------------- */
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/* changeable SANE_Option structs provide our interface to frontend. */
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/* long array of option structs */
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SANE_Option_Descriptor opt[NUM_OPTIONS];
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/* --------------------------------------------------------------------- */
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/* some options require lists of strings or numbers, we keep them here */
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/* instead of in global vars so that they can differ for each scanner */
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/*mode group*/
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SANE_String_Const mode_list[3];
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/* --------------------------------------------------------------------- */
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/* changeable vars to hold user input. modified by SANE_Options above */
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/*mode group*/
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int mode; /*color,lineart,etc*/
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/* --------------------------------------------------------------------- */
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/* values which are derived from setting the options above */
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/* the user never directly modifies these */
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/* this is defined in sane spec as a struct containing:
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SANE_Frame format;
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SANE_Bool last_frame;
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SANE_Int lines;
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SANE_Int depth; ( binary=1, gray=8, color=8 (!24) )
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SANE_Int pixels_per_line;
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SANE_Int bytes_per_line;
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*/
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SANE_Parameters params;
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/* --------------------------------------------------------------------- */
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/* calibration data read once */
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unsigned char cal_color_b[CAL_COLOR_SIZE];
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unsigned char cal_gray_b[CAL_GRAY_SIZE];
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unsigned char cal_color_w[CAL_COLOR_SIZE];
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unsigned char cal_gray_w[CAL_GRAY_SIZE];
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/* --------------------------------------------------------------------- */
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/* values which are set by scanning functions to keep track of pages, etc */
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int started;
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int paperless_lines;
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/* buffer part of image */
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unsigned char buffer[PIXELS_PER_LINE * 3 * 32];
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/* how far we have read from scanner into buffer */
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int bytes_rx;
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/* how far we have written from buffer to frontend */
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int bytes_tx;
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/* --------------------------------------------------------------------- */
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/* values used by the command and data sending function */
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int fd; /* The scanner device file descriptor. */
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};
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#define USB_COMMAND_TIME 10000
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#define USB_DATA_TIME 10000
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#define MODE_COLOR 0
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#define MODE_GRAYSCALE 1
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/* ------------------------------------------------------------------------- */
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#define MM_PER_UNIT_UNFIX SANE_UNFIX(SANE_FIX(MM_PER_INCH / 1200.0))
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#define MM_PER_UNIT_FIX SANE_FIX(SANE_UNFIX(SANE_FIX(MM_PER_INCH / 1200.0)))
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#define SCANNER_UNIT_TO_FIXED_MM(number) SANE_FIX((number) * MM_PER_UNIT_UNFIX)
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#define FIXED_MM_TO_SCANNER_UNIT(number) SANE_UNFIX(number) / MM_PER_UNIT_UNFIX
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#define CONFIG_FILE "cardscan.conf"
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#ifndef PATH_MAX
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# define PATH_MAX 1024
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#endif
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/* ------------------------------------------------------------------------- */
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SANE_Status sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize);
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SANE_Status sane_get_devices (const SANE_Device *** device_list,
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SANE_Bool local_only);
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SANE_Status sane_open (SANE_String_Const name, SANE_Handle * handle);
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SANE_Status sane_set_io_mode (SANE_Handle h, SANE_Bool non_blocking);
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SANE_Status sane_get_select_fd (SANE_Handle h, SANE_Int * fdp);
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const SANE_Option_Descriptor * sane_get_option_descriptor (SANE_Handle handle,
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SANE_Int option);
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SANE_Status sane_control_option (SANE_Handle handle, SANE_Int option,
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SANE_Action action, void *val,
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SANE_Int * info);
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SANE_Status sane_start (SANE_Handle handle);
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SANE_Status sane_get_parameters (SANE_Handle handle,
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SANE_Parameters * params);
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SANE_Status sane_read (SANE_Handle handle, SANE_Byte * buf, SANE_Int max_len,
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SANE_Int * len);
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void sane_cancel (SANE_Handle h);
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void sane_close (SANE_Handle h);
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void sane_exit (void);
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/* ------------------------------------------------------------------------- */
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static SANE_Status attach_one (const char *devicename);
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static SANE_Status connect_fd (struct scanner *s);
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static SANE_Status disconnect_fd (struct scanner *s);
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static SANE_Status
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do_cmd(struct scanner *s, int shortTime,
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unsigned char * cmdBuff, size_t cmdLen,
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unsigned char * outBuff, size_t outLen,
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unsigned char * inBuff, size_t * inLen
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);
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static SANE_Status load_calibration (struct scanner *s);
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static SANE_Status heat_lamp_color(struct scanner *s);
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static SANE_Status heat_lamp_gray(struct scanner *s);
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static SANE_Status read_from_scanner_color(struct scanner *s);
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static SANE_Status read_from_scanner_gray(struct scanner *s);
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static SANE_Status power_down(struct scanner *s);
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static void hexdump (int level, char *comment, unsigned char *p, int l);
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static size_t maxStringSize (const SANE_String_Const strings[]);
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#endif /* CARDSCAN_H */
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