kopia lustrzana https://gitlab.com/sane-project/backends
304 wiersze
9.9 KiB
C
304 wiersze
9.9 KiB
C
/* sane - Scanner Access Now Easy.
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Copyright (C) 1996, 1997 David Mosberger-Tang, 1998 Andreas Bolsch for
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extension to ScanExpress models version 0.5,
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2000 - 2002 Henning Meier-Geinitz.
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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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This file implements a SANE backend for Mustek and some Trust flatbed
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scanners with SCSI or proprietary interface. */
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#ifndef mustek_h
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#define mustek_h
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#include "../include/sane/config.h"
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#include <sys/types.h>
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/* Some constants */
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#define INQ_LEN 0x60 /* Length of SCSI inquiry */
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#ifndef PATH_MAX
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# define PATH_MAX 1024
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#endif
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#define MUSTEK_CONFIG_FILE "mustek.conf"
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#define MM_PER_INCH 25.4
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#define MAX_WAITING_TIME 60 /* How long to wait for scanner to become ready */
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#define MAX_LINE_DIST 40 /* Extra lines needed for LD correction */
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/* Flag values */
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/* Scanner types */
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#define MUSTEK_FLAG_THREE_PASS (1 << 0) /* three pass scanner */
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#define MUSTEK_FLAG_PARAGON_1 (1 << 1) /* Paragon series I scanner */
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#define MUSTEK_FLAG_PARAGON_2 (1 << 2) /* Paragon series II(A4) scanner */
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#define MUSTEK_FLAG_SE (1 << 3) /* ScanExpress scanner */
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#define MUSTEK_FLAG_SE_PLUS (1 << 4) /* ScanExpress Plus scanner */
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#define MUSTEK_FLAG_PRO (1 << 5) /* Professional series scanner */
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#define MUSTEK_FLAG_N (1 << 6) /* N-type scanner (non SCSI) */
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#define MUSTEK_FLAG_SCSI_PP (1 << 22) /* SCSI over parallel (e.g. 600 II EP) */
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/* Additional equipment */
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#define MUSTEK_FLAG_ADF (1 << 7) /* automatic document feeder */
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#define MUSTEK_FLAG_ADF_READY (1 << 8) /* paper present */
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#define MUSTEK_FLAG_TA (1 << 9) /* transparency adapter */
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/* Line-distance correction */
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#define MUSTEK_FLAG_LD_NONE (1 << 10) /* no line-distance corr */
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#define MUSTEK_FLAG_LD_BLOCK (1 << 11) /* blockwise LD corr */
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#define MUSTEK_FLAG_LD_N1 (1 << 12) /* LD corr for N-type v1 */
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#define MUSTEK_FLAG_LD_N2 (1 << 13) /* LD corr for N-type v2 */
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/* Manual fixes */
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#define MUSTEK_FLAG_LD_FIX (1 << 14) /* need line-distance fix? */
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#define MUSTEK_FLAG_LINEART_FIX (1 << 15) /* lineart fix/hack */
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#define MUSTEK_FLAG_USE_EIGHTS (1 << 16) /* use 1/8" lengths */
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#define MUSTEK_FLAG_FORCE_GAMMA (1 << 17) /* force gamma table upload */
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#define MUSTEK_FLAG_ENLARGE_X (1 << 18) /* need to enlarge x-res */
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#define MUSTEK_FLAG_COVER_SENSOR (1 << 19) /* scanner can detect open cover */
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#define MUSTEK_FLAG_USE_BLOCK (1 << 20) /* use blockmode */
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#define MUSTEK_FLAG_LEGAL_SIZE (1 << 21) /* scanner has legal size */
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#define MUSTEK_FLAG_NO_BACKTRACK (1 << 21) /* scanner has legal size */
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/* Source values: */
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#define MUSTEK_SOURCE_FLATBED 0
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#define MUSTEK_SOURCE_ADF 1
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#define MUSTEK_SOURCE_TA 2
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/* Mode values: */
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#define MUSTEK_MODE_LINEART (1 << 0) /* grayscale 1 bit / pixel */
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#define MUSTEK_MODE_GRAY (1 << 1) /* grayscale 8 bits / pixel */
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#define MUSTEK_MODE_COLOR (1 << 2) /* color 24 bits / pixel */
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#define MUSTEK_MODE_HALFTONE (1 << 3) /* use dithering */
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/* Color band codes: */
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#define MUSTEK_CODE_GRAY 0
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#define MUSTEK_CODE_RED 1
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#define MUSTEK_CODE_GREEN 2
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#define MUSTEK_CODE_BLUE 3
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/* SCSI commands that the Mustek scanners understand (or not): */
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#define MUSTEK_SCSI_TEST_UNIT_READY 0x00
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#define MUSTEK_SCSI_REQUEST_SENSE 0x03
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#define MUSTEK_SCSI_AREA_AND_WINDOWS 0x04
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#define MUSTEK_SCSI_READ_SCANNED_DATA 0x08
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#define MUSTEK_SCSI_GET_IMAGE_STATUS 0x0f
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#define MUSTEK_SCSI_ADF_AND_BACKTRACK 0x10
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#define MUSTEK_SCSI_CCD_DISTANCE 0x11
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#define MUSTEK_SCSI_INQUIRY 0x12
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#define MUSTEK_SCSI_MODE_SELECT 0x15
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#define MUSTEK_SCSI_START_STOP 0x1b
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#define MUSTEK_SCSI_SET_WINDOW 0x24
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#define MUSTEK_SCSI_GET_WINDOW 0x25
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#define MUSTEK_SCSI_READ_DATA 0x28
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#define MUSTEK_SCSI_SEND_DATA 0x2a
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#define MUSTEK_SCSI_LOOKUP_TABLE 0x55
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/* Convenience macros */
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#if defined(MIN)
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#undef MIN
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#endif
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#if defined(MAX)
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#undef MAX
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#endif
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define MAX(a,b) ((a) > (b) ? (a) : (b))
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/* Copy values to memory ('L' = little endian, 'B' = big endian */
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#define STORE16L(cp,v) \
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do { \
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int value = (v); \
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\
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*(cp)++ = (value >> 0) & 0xff; \
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*(cp)++ = (value >> 8) & 0xff; \
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} while (0)
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#define STORE16B(cp,v) \
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do { \
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int value = (v); \
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\
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*(cp)++ = (value >> 8) & 0xff; \
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*(cp)++ = (value >> 0) & 0xff; \
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} while (0)
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#define STORE32B(cp,v) \
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do { \
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long int value = (v); \
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\
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*(cp)++ = (value >> 24) & 0xff; \
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*(cp)++ = (value >> 16) & 0xff; \
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*(cp)++ = (value >> 8) & 0xff; \
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*(cp)++ = (value >> 0) & 0xff; \
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} while (0)
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/* declarations */
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enum Mustek_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,
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OPT_FAST_GRAY_MODE,
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OPT_RESOLUTION,
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OPT_BIT_DEPTH,
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OPT_SPEED,
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OPT_SOURCE,
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OPT_PREVIEW,
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OPT_FAST_PREVIEW,
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OPT_GEOMETRY_GROUP,
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OPT_TL_X, /* top-left x */
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OPT_TL_Y, /* top-left y */
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OPT_BR_X, /* bottom-right x */
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OPT_BR_Y, /* bottom-right y */
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OPT_ENHANCEMENT_GROUP,
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OPT_BRIGHTNESS,
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OPT_BRIGHTNESS_R,
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OPT_BRIGHTNESS_G,
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OPT_BRIGHTNESS_B,
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OPT_CONTRAST,
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OPT_CONTRAST_R,
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OPT_CONTRAST_G,
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OPT_CONTRAST_B,
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OPT_CUSTOM_GAMMA, /* use custom gamma tables? */
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/* The gamma vectors MUST appear in the order gray, red, green,
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blue. */
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OPT_GAMMA_VECTOR,
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OPT_GAMMA_VECTOR_R,
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OPT_GAMMA_VECTOR_G,
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OPT_GAMMA_VECTOR_B,
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OPT_QUALITY_CAL,
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OPT_HALFTONE_DIMENSION,
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OPT_HALFTONE_PATTERN,
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/* must come last: */
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NUM_OPTIONS
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};
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typedef struct Mustek_Device
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{
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struct Mustek_Device *next;
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SANE_String name;
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SANE_Device sane;
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SANE_Range dpi_range;
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SANE_Range x_range;
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SANE_Range y_range;
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/* scan area when transparency adapter is used: */
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SANE_Range x_trans_range;
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SANE_Range y_trans_range;
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SANE_Word flags;
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/* length of gamma table, probably always <= 4096 for the SE */
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SANE_Int gamma_length;
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/* values actually used by scanner, not necessarily the desired! */
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SANE_Int bpl, lines;
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/* what is needed for calibration (ScanExpress and Pro series) */
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struct
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{
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SANE_Int bytes;
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SANE_Int lines;
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SANE_Byte *buffer;
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SANE_Word *line_buffer[3];
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}
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cal;
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/* current and maximum buffer size used by the backend */
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/* the buffer sent to the scanner is actually half of this size */
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SANE_Int buffer_size;
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SANE_Int max_buffer_size;
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/* maximum size scanned in one block and corresponding lines */
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SANE_Int max_block_buffer_size;
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SANE_Int lines_per_block;
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SANE_Byte *block_buffer;
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/* firmware format: 0 = old, MUSTEK at pos 8; 1 = new, MUSTEK at
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pos 36 */
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SANE_Int firmware_format;
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/* firmware revision system: 0 = old, x.yz; 1 = new, Vxyz */
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SANE_Int firmware_revision_system;
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}
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Mustek_Device;
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typedef struct Mustek_Scanner
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{
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/* all the state needed to define a scan request: */
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struct Mustek_Scanner *next;
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SANE_Option_Descriptor opt[NUM_OPTIONS];
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Option_Value val[NUM_OPTIONS];
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SANE_Int gamma_table[4][256];
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SANE_Int *halftone_pattern;
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SANE_Bool custom_halftone_pattern;
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SANE_Int halftone_pattern_type;
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SANE_Bool scanning;
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SANE_Bool cancelled;
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SANE_Int pass; /* pass number */
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SANE_Int line; /* current line number */
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SANE_Parameters params;
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/* Parsed option values and variables that are valid only during
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actual scanning: */
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SANE_Word mode;
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SANE_Bool one_pass_color_scan;
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SANE_Int resolution_code;
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int fd; /* SCSI filedescriptor */
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pid_t reader_pid; /* process id of reader */
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int reader_fds; /* OS/2: pipe write handler for reader */
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int pipe; /* pipe to reader process */
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long start_time; /* at this time the scan started */
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SANE_Word total_bytes; /* bytes transmitted by sane_read */
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SANE_Word total_lines; /* lines transmitted to sane_read pipe */
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/* scanner dependent/low-level state: */
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Mustek_Device *hw;
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/* line-distance correction related state: */
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struct
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{
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SANE_Int color; /* first color appearing in read data */
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SANE_Int max_value;
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SANE_Int peak_res;
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SANE_Int dist[3]; /* line distance */
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SANE_Int index[3]; /* index for R/G/B color assignment */
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SANE_Int quant[3]; /* for resolution correction */
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SANE_Int saved[3]; /* number of saved color lines */
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/* these are used for SE, MFS and N line-distance correction: */
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SANE_Byte *buf[3];
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/* these are used for N line-distance correction only: */
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SANE_Int ld_line; /* line # currently processed in
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ld-correction */
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SANE_Int lmod3; /* line # modulo 3 */
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}
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ld;
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}
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Mustek_Scanner;
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#endif /* mustek_h */
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