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sane-project-backends/backend/canon_dr.h

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C
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#ifndef CANON_DR_H
#define CANON_DR_H
/*
* Part of SANE - Scanner Access Now Easy.
* Please see opening comments in canon_dr.c
*/
/* -------------------------------------------------------------------------
* This option list has to contain all options for all scanners supported by
* this driver. If a certain scanner cannot handle a certain option, there's
* still the possibility to say so, later.
*/
enum scanner_Option
{
OPT_NUM_OPTS = 0,
OPT_STANDARD_GROUP,
OPT_SOURCE, /*fb/adf/front/back/duplex*/
OPT_MODE, /*mono/gray/color*/
OPT_RES, /*a range or a list*/
OPT_GEOMETRY_GROUP,
OPT_TL_X,
OPT_TL_Y,
OPT_BR_X,
OPT_BR_Y,
OPT_PAGE_WIDTH,
OPT_PAGE_HEIGHT,
OPT_ENHANCEMENT_GROUP,
OPT_BRIGHTNESS,
OPT_CONTRAST,
OPT_THRESHOLD,
OPT_RIF,
OPT_ADVANCED_GROUP,
OPT_COMPRESS,
OPT_COMPRESS_ARG,
OPT_DF_THICKNESS,
OPT_DF_LENGTH,
OPT_ROLLERDESKEW,
OPT_SWDESKEW,
OPT_SWDESPECK,
OPT_SWCROP,
OPT_STAPLEDETECT,
OPT_DROPOUT_COLOR_F,
OPT_DROPOUT_COLOR_B,
OPT_BUFFERMODE,
OPT_SIDE,
/*sensor group*/
OPT_SENSOR_GROUP,
OPT_START,
OPT_STOP,
OPT_BUTT3,
OPT_NEWFILE,
OPT_COUNTONLY,
OPT_BYPASSMODE,
OPT_COUNTER,
/* must come last: */
NUM_OPTIONS
};
struct img_params
{
int mode; /*color,lineart,etc*/
int source; /*fb,adf front,adf duplex,etc*/
int dpi_x; /*these are in dpi */
int dpi_y;
int tl_x; /*these are in 1200dpi units */
int tl_y;
int br_x;
int br_y;
int page_x;
int page_y;
int width; /*these are in pixels*/
int height;
SANE_Frame format; /*SANE_FRAME_**/
int bpp; /* 1,8,24 */
int Bpl; /* in bytes */
int valid_width; /*some machines have black padding*/
int valid_Bpl;
/* done yet? */
int eof[2];
/* how far we have read/written */
int bytes_sent[2];
/* total to read/write */
int bytes_tot[2];
/* dumb scanners send extra data */
int skip_lines[2];
};
struct scanner
{
/* --------------------------------------------------------------------- */
/* immutable values which are set during init of scanner. */
struct scanner *next;
char device_name[1024]; /* The name of the device from sanei */
int missing; /* used to mark unplugged scanners */
/* --------------------------------------------------------------------- */
/* immutable values which are set during reading of config file. */
int buffer_size;
int connection; /* hardware interface type */
/* --------------------------------------------------------------------- */
/* immutable values which are set during inquiry probing of the scanner. */
/* members in order found in scsi data... */
char vendor_name[9]; /* raw data as returned by SCSI inquiry. */
char model_name[17]; /* raw data as returned by SCSI inquiry. */
char version_name[5]; /* raw data as returned by SCSI inquiry. */
/* --------------------------------------------------------------------- */
/* immutable values which are set during std VPD probing of the scanner. */
/* members in order found in scsi data... */
int basic_x_res;
int basic_y_res;
int step_x_res;
int step_y_res;
int max_x_res;
int max_y_res;
int min_x_res;
int min_y_res;
int std_res_x[16];
int std_res_y[16];
/* max scan size in pixels converted to 1200dpi units */
int max_x;
int max_y;
/*FIXME: 4 more unknown values here*/
int can_grayscale;
int can_halftone;
int can_monochrome;
int can_overflow;
/* --------------------------------------------------------------------- */
/* immutable values which are hard coded because they are not in vpd */
int brightness_steps;
int threshold_steps;
int contrast_steps;
int ppl_mod; /* modulus of scanline width */
/* the scan size in 1/1200th inches, NOT basic_units or sane units */
int min_x;
int min_y;
int valid_x;
int max_x_fb;
int max_y_fb;
int can_color; /* actually might be in vpd, but which bit? */
int need_ccal; /* scanner needs software to help with afe calibration */
int need_fcal; /* scanner needs software to help with fine calibration */
int need_fcal_buffer; /* software to apply calibration stored in scanner*/
int has_counter;
int has_rif;
int has_adf;
int has_flatbed;
int has_duplex;
int has_back; /* not all duplex scanners can do adf back side only */
int has_comp_JPEG;
int has_buffer;
int has_df;
int has_btc;
int can_read_panel;
int can_write_panel;
int rgb_format; /* meaning unknown */
int padding; /* meaning unknown */
int always_op; /* send object pos between pages */
int invert_tly; /* weird bug in some smaller scanners */
int unknown_byte2; /* weird byte, required, meaning unknown */
int padded_read; /* some machines need extra 12 bytes on reads */
int fixed_width; /* some machines always scan full width */
int even_Bpl; /* some machines require even bytes per line */
int gray_interlace[2]; /* different models interlace heads differently */
int color_interlace[2]; /* different models interlace colors differently */
int duplex_interlace; /* different models interlace sides differently */
int jpeg_interlace; /* different models interlace jpeg sides differently */
int duplex_offset; /* number of lines of padding added to front (1/1200)*/
int duplex_offset_side; /* padding added to front or back? */
int sw_lut; /* no hardware brightness/contrast support */
int bg_color; /* needed to fill in after rotation */
int reverse_by_mode[6]; /* mode specific */
/* --------------------------------------------------------------------- */
/* immutable values which are set during serial number probing scanner */
char serial_name[28]; /* 16 char model, ':', 10 byte serial, null */
/* --------------------------------------------------------------------- */
/* struct with pointers to device/vendor/model names, and a type value */
/* used to inform sane frontend about the device */
SANE_Device sane;
/* --------------------------------------------------------------------- */
/* changeable SANE_Option structs provide our interface to frontend. */
/* some options require lists of strings or numbers, we keep them here */
/* instead of in global vars so that they can differ for each scanner */
/* long array of option structs */
SANE_Option_Descriptor opt[NUM_OPTIONS];
/*mode group*/
SANE_String_Const mode_list[7];
SANE_String_Const source_list[5];
SANE_Int res_list[17];
SANE_Range res_range;
/*geometry group*/
SANE_Range tl_x_range;
SANE_Range tl_y_range;
SANE_Range br_x_range;
SANE_Range br_y_range;
SANE_Range paper_x_range;
SANE_Range paper_y_range;
/*enhancement group*/
SANE_Range brightness_range;
SANE_Range contrast_range;
SANE_Range threshold_range;
/*advanced group*/
SANE_String_Const compress_list[3];
SANE_Range compress_arg_range;
SANE_Range swdespeck_range;
SANE_String_Const do_color_list[8];
/*sensor group*/
SANE_Range counter_range;
/* --------------------------------------------------------------------- */
/* changeable vars to hold user input. modified by SANE_Options above */
/* the user's requested image params */
/* exposed in standard and geometry option groups */
struct img_params u;
/*enhancement group*/
int brightness;
int contrast;
int threshold;
int rif;
/*advanced group*/
int compress;
int compress_arg;
int df_length;
int df_thickness;
int dropout_color_f;
int dropout_color_b;
int buffermode;
int rollerdeskew;
int swdeskew;
int swdespeck;
int swcrop;
int stapledetect;
/* --------------------------------------------------------------------- */
/* values which are derived from setting the options above */
/* the user never directly modifies these */
/* the scanner image params (what we ask from scanner) */
struct img_params s;
/* the intermediate image params (like user, but possible higher depth) */
struct img_params i;
/* the brightness/contrast LUT for dumb scanners */
unsigned char lut[256];
/* --------------------------------------------------------------------- */
/* values which are set by calibration functions */
int c_res;
int c_mode;
int c_offset[2];
int c_gain[2];
int c_exposure[2][3];
int f_res;
int f_mode;
unsigned char * f_offset[2];
unsigned char * f_gain[2];
/* --------------------------------------------------------------------- */
/* values which are set by scanning functions to keep track of pages, etc */
int started;
int reading;
int cancelled;
int side;
int prev_page;
int jpeg_stage;
int jpeg_ff_offset;
unsigned char * buffers[2];
/* --------------------------------------------------------------------- */
/* values used by the command and data sending functions (scsi/usb) */
int fd; /* The scanner device file descriptor. */
size_t rs_info;
/* --------------------------------------------------------------------- */
/* values used to hold hardware or control panel status */
int panel_start;
int panel_stop;
int panel_butt3;
int panel_new_file;
int panel_count_only;
int panel_bypass_mode;
int panel_enable_led;
int panel_counter;
/* values which are used to track the frontend's access to sensors */
char hw_read[NUM_OPTIONS-OPT_START];
};
#define CONNECTION_SCSI 0 /* SCSI interface */
#define CONNECTION_USB 1 /* USB interface */
#define SIDE_FRONT 0
#define SIDE_BACK 1
#define CHAN_RED 0
#define CHAN_GREEN 1
#define CHAN_BLUE 2
#define SOURCE_FLATBED 0
#define SOURCE_ADF_FRONT 1
#define SOURCE_ADF_BACK 2
#define SOURCE_ADF_DUPLEX 3
static const int dpi_list[] = {
60,75,100,120,150,160,180,200,
240,300,320,400,480,600,800,1200
};
#define DPI_60 0
#define DPI_75 1
#define DPI_100 2
#define DPI_120 3
#define DPI_150 4
#define DPI_160 5
#define DPI_180 6
#define DPI_200 7
#define DPI_240 8
#define DPI_300 9
#define DPI_320 10
#define DPI_400 11
#define DPI_480 12
#define DPI_600 13
#define DPI_800 14
#define DPI_1200 15
#define COMP_NONE WD_cmp_NONE
#define COMP_JPEG WD_cmp_JPEG
#define JPEG_STAGE_NONE 0
#define JPEG_STAGE_SOF 1
/* these are same as scsi data to make code easier */
#define MODE_LINEART WD_comp_LA
#define MODE_HALFTONE WD_comp_HT
#define MODE_GRAYSCALE WD_comp_GS
#define MODE_COLOR WD_comp_CG
enum {
COLOR_NONE = 0,
COLOR_RED,
COLOR_GREEN,
COLOR_BLUE,
COLOR_EN_RED,
COLOR_EN_GREEN,
COLOR_EN_BLUE
};
/* these are same as scsi data to make code easier */
#define COLOR_WHITE 1
#define COLOR_BLACK 2
#define GRAY_INTERLACE_NONE 0
#define GRAY_INTERLACE_2510 1
#define GRAY_INTERLACE_gG 2
#define COLOR_INTERLACE_RGB 0
#define COLOR_INTERLACE_BGR 1
#define COLOR_INTERLACE_RRGGBB 2
#define COLOR_INTERLACE_rRgGbB 3
#define COLOR_INTERLACE_2510 4
#define DUPLEX_INTERLACE_NONE 0
#define DUPLEX_INTERLACE_FFBB 1
#define DUPLEX_INTERLACE_FBFB 2
#define DUPLEX_INTERLACE_2510 3
#define JPEG_INTERLACE_ALT 0
#define JPEG_INTERLACE_NONE 1
#define CROP_RELATIVE 0
#define CROP_ABSOLUTE 1
/* ------------------------------------------------------------------------- */
#define MM_PER_UNIT_UNFIX SANE_UNFIX(SANE_FIX(MM_PER_INCH / 1200.0))
#define MM_PER_UNIT_FIX SANE_FIX(SANE_UNFIX(SANE_FIX(MM_PER_INCH / 1200.0)))
#define SCANNER_UNIT_TO_FIXED_MM(number) SANE_FIX((number) * MM_PER_UNIT_UNFIX)
#define FIXED_MM_TO_SCANNER_UNIT(number) SANE_UNFIX(number) / MM_PER_UNIT_UNFIX
#define CANON_DR_CONFIG_FILE "canon_dr.conf"
#ifndef PATH_MAX
# define PATH_MAX 1024
#endif
/* ------------------------------------------------------------------------- */
SANE_Status sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize);
SANE_Status sane_get_devices (const SANE_Device *** device_list,
SANE_Bool local_only);
SANE_Status sane_open (SANE_String_Const name, SANE_Handle * handle);
SANE_Status sane_set_io_mode (SANE_Handle h, SANE_Bool non_blocking);
SANE_Status sane_get_select_fd (SANE_Handle h, SANE_Int * fdp);
const SANE_Option_Descriptor * sane_get_option_descriptor (SANE_Handle handle,
SANE_Int option);
SANE_Status sane_control_option (SANE_Handle handle, SANE_Int option,
SANE_Action action, void *val,
SANE_Int * info);
SANE_Status sane_start (SANE_Handle handle);
SANE_Status sane_get_parameters (SANE_Handle handle,
SANE_Parameters * params);
SANE_Status sane_read (SANE_Handle handle, SANE_Byte * buf, SANE_Int max_len,
SANE_Int * len);
void sane_cancel (SANE_Handle h);
void sane_close (SANE_Handle h);
void sane_exit (void);
/* ------------------------------------------------------------------------- */
static SANE_Status attach_one_scsi (const char *name);
static SANE_Status attach_one_usb (const char *name);
static SANE_Status attach_one (const char *devicename, int connType);
static SANE_Status connect_fd (struct scanner *s);
static SANE_Status disconnect_fd (struct scanner *s);
static SANE_Status sense_handler (int scsi_fd, u_char * result, void *arg);
static SANE_Status init_inquire (struct scanner *s);
static SANE_Status init_vpd (struct scanner *s);
static SANE_Status init_model (struct scanner *s);
static SANE_Status init_panel (struct scanner *s);
static SANE_Status init_user (struct scanner *s);
static SANE_Status init_options (struct scanner *s);
static SANE_Status
do_cmd(struct scanner *s, int runRS, int shortTime,
unsigned char * cmdBuff, size_t cmdLen,
unsigned char * outBuff, size_t outLen,
unsigned char * inBuff, size_t * inLen
);
static SANE_Status
do_scsi_cmd(struct scanner *s, int runRS, int shortTime,
unsigned char * cmdBuff, size_t cmdLen,
unsigned char * outBuff, size_t outLen,
unsigned char * inBuff, size_t * inLen
);
static SANE_Status
do_usb_cmd(struct scanner *s, int runRS, int shortTime,
unsigned char * cmdBuff, size_t cmdLen,
unsigned char * outBuff, size_t outLen,
unsigned char * inBuff, size_t * inLen
);
static SANE_Status do_usb_clear(struct scanner *s, int clear, int runRS);
static SANE_Status wait_scanner (struct scanner *s);
static SANE_Status object_position (struct scanner *s, int i_load);
static SANE_Status ssm_buffer (struct scanner *s);
static SANE_Status ssm_do (struct scanner *s);
static SANE_Status ssm_df (struct scanner *s);
static int get_page_width (struct scanner *s);
static int get_page_height (struct scanner *s);
static SANE_Status set_window (struct scanner *s);
static SANE_Status update_params (struct scanner *s, int calib);
static SANE_Status update_i_params (struct scanner *s);
static SANE_Status clean_params (struct scanner *s);
static SANE_Status read_panel(struct scanner *s, SANE_Int option);
static SANE_Status send_panel(struct scanner *s);
static SANE_Status start_scan (struct scanner *s, int type);
static SANE_Status check_for_cancel(struct scanner *s);
static SANE_Status read_from_scanner(struct scanner *s, int side, int exact);
static SANE_Status read_from_scanner_duplex(struct scanner *s, int exact);
static SANE_Status copy_simplex(struct scanner *s, unsigned char * buf, int len, int side);
static SANE_Status copy_duplex(struct scanner *s, unsigned char * buf, int len);
static SANE_Status copy_line(struct scanner *s, unsigned char * buf, int side);
static SANE_Status buffer_despeck(struct scanner *s, int side);
static SANE_Status buffer_deskew(struct scanner *s, int side);
static SANE_Status buffer_crop(struct scanner *s, int side);
int * getTransitionsY (struct scanner *s, int side, int top);
int * getTransitionsX (struct scanner *s, int side, int top);
SANE_Status getEdgeIterate (int width, int height, int resolution,
int * buff, double * finSlope, int * finXInter, int * finYInter);
SANE_Status getEdgeSlope (int width, int height, int * top, int * bot,
double slope, int * finXInter, int * finYInter);
SANE_Status rotateOnCenter (struct scanner *s, int side,
int centerX, int centerY, double slope);
static SANE_Status getLine (int height, int width, int * buff,
int slopes, double minSlope, double maxSlope,
int offsets, int minOffset, int maxOffset,
double * finSlope, int * finOffset, int * finDensity);
static SANE_Status load_lut (unsigned char * lut, int in_bits, int out_bits,
int out_min, int out_max, int slope, int offset);
static SANE_Status read_from_buffer(struct scanner *s, SANE_Byte * buf, SANE_Int max_len, SANE_Int * len, int side);
static SANE_Status image_buffers (struct scanner *s, int setup);
static SANE_Status offset_buffers (struct scanner *s, int setup);
static SANE_Status gain_buffers (struct scanner *s, int setup);
static SANE_Status calibrate_AFE(struct scanner *s);
static SANE_Status calibrate_fine(struct scanner *s);
static SANE_Status calibrate_fine_buffer(struct scanner *s);
static SANE_Status write_AFE (struct scanner *s);
static SANE_Status calibration_scan (struct scanner *s, int);
static void hexdump (int level, char *comment, unsigned char *p, int l);
static void default_globals (void);
static size_t maxStringSize (const SANE_String_Const strings[]);
#endif /* CANON_DR_H */
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