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+/* sane - Scanner Access Now Easy.
+
+ Copyright (C) 1997, 1998, 1999, 2001, 2002, 2013 Franck Schnefra,
+ Michel Roelofs, Emmanuel Blot, Mikko Tyolajarvi, David Mosberger-Tang,
+ Wolfgang Goeller, Petter Reinholdtsen, Gary Plewa, Sebastien Sable,
+ Mikael Magnusson, Andrew Goodbody, Oliver Schwartz and Kevin Charter
+
+ 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.
+
+ This file is a component of the implementation of a backend for many
+ of the the AGFA SnapScan and Acer Vuego/Prisa flatbed scanners. */
+
+/* $Id$
+ SANE SnapScan backend */
+
+#ifndef snapscan_h
+#define snapscan_h
+
+#include "../include/sane/sane.h"
+
+#define UNREFERENCED_PARAMETER(x) ((void) x)
+
+/* snapscan device field values */
+
+#define DEFAULT_DEVICE "/dev/scanner" /* Check this if config is missing */
+#define SNAPSCAN_TYPE "flatbed scanner"
+#define SNAPSCAN_FS_TYPE "film scanner"
+#define TMP_FILE_PREFIX "/var/tmp/snapscan"
+#define SNAPSCAN_CONFIG_FILE "snapscan.conf"
+#define FIRMWARE_KW "firmware"
+#define OPTIONS_KW "options"
+
+/* Define the colour channel order in arrays */
+#define R_CHAN 0
+#define G_CHAN 1
+#define B_CHAN 2
+
+typedef enum
+{
+ UNKNOWN_BUS,
+ SCSI,
+ USB
+} SnapScan_Bus;
+
+typedef enum
+{
+ UNKNOWN,
+ SNAPSCAN, /* the original SnapScan */
+ SNAPSCAN300, /* the SnapScan 300 */
+ SNAPSCAN310, /* the SnapScan 310 */
+ SNAPSCAN600, /* the SnapScan 600 */
+ SNAPSCAN1236, /* the SnapScan 1236 */
+ SNAPSCAN1212U,
+ SNAPSCANE20, /* SnapScan e20/e25, 600 DPI */
+ SNAPSCANE50, /* SnapScan e40/e50, 1200 DPI */
+ SNAPSCANE52, /* SnapScan e52, 1200 DPI, no quality calibration */
+ ACER300F,
+ PRISA310, /* Acer ScanPrisa 310 - 300 DPI */
+ PRISA610, /* Acer ScanPrisa 610 - 600 DPI */
+ PRISA620, /* Acer ScanPrisa 620 - 600 DPI */
+ PRISA640, /* Acer ScanPrisa 640 - 600 DPI */
+ PRISA1240, /* Acer ScanPrisa 1240 - 1200 DPI */
+ PRISA4300, /* Acer ScanPrisa 3300/4300 - 600 DPI */
+ PRISA4300_2, /* Acer ScanPrisa 3300/4300 - 600 DPI, 42 bit*/
+ PRISA5000, /* Acer ScanPrisa 5000 - 1200 DPI */
+ PRISA5000E, /* Acer ScanPrisa 5000E/5000U - 1200 DPI */
+ PRISA5150, /* Benq 5150 - 1200 DPI */
+ PRISA5300, /* Acer ScanPrisa 5300 - 1200 DPI */
+ PERFECTION660, /* Epson Perfection 660 - 1200 DPI */
+ PERFECTION1270, /* Epson Perfection 1270 - 1600 DPI */
+ PERFECTION1670, /* Epson Perfection 1670 - 1600 DPI */
+ PERFECTION2480, /* Epson Perfection 2480 - 2400 DPI */
+ PERFECTION3490, /* Epson Perfection 3490 - 3200 DPI */
+ STYLUS_CX1500, /* Epson Stylus CX 1500 - 600 DPI */
+ ARCUS1200, /* Agfa Arcus 1200 - 1200 DPI (rebadged Acer?) */
+ SCANWIT2720S /* BenQ ScanWit 2720S film scanner 2700 DPI */
+} SnapScan_Model;
+
+struct SnapScan_Driver_desc {
+ SnapScan_Model id;
+ char *driver_name;
+};
+
+static struct SnapScan_Driver_desc drivers[] =
+{
+ /* enum value -> Driver name */
+ {UNKNOWN, "Unknown"},
+ {SNAPSCAN, "SnapScan"},
+ {SNAPSCAN300, "SnapScan300"},
+ {SNAPSCAN310, "SnapScan310"},
+ {SNAPSCAN600, "SnapScan600"},
+ {SNAPSCAN1236, "SnapScan1236"},
+ {SNAPSCAN1212U, "SnapScan1212"},
+ {SNAPSCANE20, "SnapScanE20"},
+ {SNAPSCANE50, "SnapScanE50"},
+ {SNAPSCANE52, "SnapScanE52"},
+ {ACER300F, "Acer300"},
+ {PRISA310, "Acer310"},
+ {PRISA610, "Acer610"},
+ {PRISA620, "Acer620"},
+ {PRISA640, "Acer640"},
+ {PRISA4300, "Acer4300"},
+ {PRISA4300_2, "Acer4300 (42 bit)"},
+ {PRISA1240, "Acer1240"},
+ {PRISA5000E, "Benq 5000E/5000U"},
+ {PRISA5000, "Benq 5000"},
+ {PRISA5150, "Benq 5150 / 5250"},
+ {PRISA5300, "Benq 5300"},
+ {ARCUS1200, "Arcus1200"},
+ {PERFECTION660, "Perfection 660"},
+ {PERFECTION1270, "Perfection 1270"},
+ {PERFECTION1670, "Perfection 1670"},
+ {PERFECTION2480, "Perfection 2480"},
+ {PERFECTION3490, "Perfection 3490"},
+ {STYLUS_CX1500, "Stylus CX 1500"},
+ {SCANWIT2720S, "BenQ ScanWit 2720S"}
+};
+
+#define known_drivers ((int) (sizeof(drivers)/sizeof(drivers[0])))
+
+struct SnapScan_Model_desc
+{
+ char *scsi_name;
+ SnapScan_Model id;
+};
+
+static struct SnapScan_Model_desc scanners[] =
+{
+ /* SCSI model name -> enum value */
+ {"FlatbedScanner_2", PRISA310},
+ {"FlatbedScanner_4", PRISA610},
+ {"FlatbedScanner_5", PRISA620},
+ {"FlatbedScanner_7", PRISA310},
+ {"FlatbedScanner_9", PRISA620},
+ {"FlatbedScanner13", PRISA620},
+ {"FlatbedScanner16", PRISA620},
+ {"FlatbedScanner17", PRISA620},
+ {"FlatbedScanner18", PRISA620},
+ {"FlatbedScanner19", PRISA1240},
+ {"FlatbedScanner20", PRISA640},
+ {"FlatbedScanner21", PRISA4300},
+ {"FlatbedScanner22", PRISA4300_2},
+ {"FlatbedScanner23", PRISA4300_2},
+ {"FlatbedScanner24", PRISA5300},
+ {"FlatbedScanner25", PRISA5000E},/* 5000E/5000U */
+ {"FlatbedScanner40", PRISA5150}, /* 5150 / 5250 */
+ {"FlatbedScanner42", PRISA5000}, /* 5000 */
+ {"SNAPSCAN 1212U", SNAPSCAN1212U},
+ {"SNAPSCAN 1212U_2", SNAPSCAN1212U},
+ {"SNAPSCAN e10", SNAPSCANE20},
+ {"SNAPSCAN e20", SNAPSCANE20},
+ {"SNAPSCAN e25", SNAPSCANE20},
+ {"SNAPSCAN e26", SNAPSCANE20},
+ {"SNAPSCAN e40", SNAPSCANE50},
+ {"SNAPSCAN e42", SNAPSCANE52},
+ {"SNAPSCAN e50", SNAPSCANE50},
+ {"SNAPSCAN e52", SNAPSCANE52},
+ {"SNAPSCAN 1236", SNAPSCAN1236},
+ {"SNAPSCAN 1236U", SNAPSCAN1236},
+ {"SNAPSCAN 300", SNAPSCAN300},
+ {"SNAPSCAN 310", SNAPSCAN310},
+ {"SNAPSCAN 600", SNAPSCAN600},
+ {"SnapScan", SNAPSCAN},
+ {"ACERSCAN_A4____1", ACER300F},
+ {"Perfection 660", PERFECTION660},
+ {"EPSON Scanner", PERFECTION1670}, /* dummy entry to detect scanner */
+ {"EPSON Scanner1", PERFECTION2480}, /* dummy entry to detect scanner */
+ {"EPSON Scanner2", PERFECTION3490}, /* dummy entry to detect scanner */
+ {"EPSON MFP00", STYLUS_CX1500},
+ {"ARCUS 1200", ARCUS1200},
+ {"FilmScanner____1", SCANWIT2720S}
+};
+
+#define known_scanners ((int) (sizeof(scanners)/sizeof(scanners[0])))
+
+static char *vendors[] =
+{
+ /* SCSI Vendor name */
+ "AGFA",
+ "COLOR",
+ "Color",
+ "ACERPER",
+ "EPSON"
+};
+#define known_vendors ((int) (sizeof(vendors)/sizeof(vendors[0])))
+
+/* Known vendor IDs */
+#define USB_VENDOR_AGFA 0x06bd
+#define USB_VENDOR_ACER 0x04a5
+#define USB_VENDOR_EPSON 0x04b8
+
+/* Agfa product IDs */
+#define USB_PRODUCT_1212U2 0x2061
+/* Acer product IDs */
+#define USB_PRODUCT_PRISA310 0x1a20
+#define USB_PRODUCT_PRISA320 0x2022
+/* Epson product IDs */
+#define USB_PRODUCT_PERFECTION660 0x0114
+#define USB_PRODUCT_PERFECTION1270 0x0120
+#define USB_PRODUCT_PERFECTION1670 0x011f
+#define USB_PRODUCT_PERFECTION2480 0x0121
+#define USB_PRODUCT_PERFECTION3490 0x0122
+
+static SANE_Word usb_vendor_ids[] =
+{
+ /* USB Vendor IDs */
+ USB_VENDOR_AGFA, /* Agfa */
+ USB_VENDOR_ACER, /* Acer */
+ USB_VENDOR_EPSON /* Epson */
+};
+#define known_usb_vendor_ids ((int) (sizeof(usb_vendor_ids)/sizeof(usb_vendor_ids[0])))
+
+struct SnapScan_USB_Model_desc
+{
+ SANE_Word vendor_id;
+ SANE_Word product_id;
+ SnapScan_Model id;
+};
+
+static struct SnapScan_USB_Model_desc usb_scanners[] =
+{
+ {USB_VENDOR_ACER, USB_PRODUCT_PRISA310, PRISA310}, /* Acer 310U */
+ {USB_VENDOR_ACER, USB_PRODUCT_PRISA320, PRISA310}, /* Acer 320U */
+ {USB_VENDOR_EPSON, USB_PRODUCT_PERFECTION660, PERFECTION660}, /* Epson Perfection 660 */
+ {USB_VENDOR_EPSON, USB_PRODUCT_PERFECTION1270, PERFECTION1270}, /* Epson Perfection 1270 */
+ {USB_VENDOR_EPSON, USB_PRODUCT_PERFECTION1670, PERFECTION1670}, /* Epson Perfection 1670 */
+ {USB_VENDOR_EPSON, USB_PRODUCT_PERFECTION2480, PERFECTION2480}, /* Epson Perfection 2480 */
+ {USB_VENDOR_EPSON, USB_PRODUCT_PERFECTION3490, PERFECTION3490} /* Epson Perfection 3490 */
+};
+#define known_usb_scanners ((int) (sizeof(usb_scanners)/sizeof(usb_scanners[0])))
+
+typedef enum
+{
+ OPT_COUNT = 0, /* option count */
+ OPT_MODE_GROUP, /* scan mode group */
+ OPT_SCANRES, /* scan resolution */
+ OPT_PREVIEW, /* preview mode toggle */
+ OPT_MODE, /* scan mode */
+ OPT_PREVIEW_MODE, /* preview mode */
+ OPT_HIGHQUALITY, /* scan quality (fast / high) */
+ OPT_SOURCE, /* scan source (flatbed / TPO) */
+ OPT_FRAME_NO, /* frame number for film scanner */
+ OPT_FOCUS_MODE, /* manual or auto focus for film scanner */
+ OPT_FOCUS_POINT, /* focus point for film scanner */
+ OPT_GEOMETRY_GROUP, /* geometry group */
+ OPT_TLX, /* top left x */
+ OPT_TLY, /* top left y */
+ OPT_BRX, /* bottom right x */
+ OPT_BRY, /* bottom right y */
+ OPT_PREDEF_WINDOW, /* predefined window configuration */
+ OPT_ENHANCEMENT_GROUP, /* enhancement group */
+ OPT_BIT_DEPTH, /* 8/16 bit/pixel for colour scans */
+ OPT_QUALITY_CAL, /* quality calibration */
+ OPT_HALFTONE, /* halftone flag */
+ OPT_HALFTONE_PATTERN, /* halftone matrix */
+ OPT_CUSTOM_GAMMA, /* use custom gamma tables */
+ OPT_GAMMA_BIND, /* use same gamma value for all colors */
+ OPT_GAMMA_GS, /* gamma correction (greyscale) */
+ OPT_GAMMA_R, /* gamma correction (red) */
+ OPT_GAMMA_G, /* gamma correction (green) */
+ OPT_GAMMA_B, /* gamma correction (blue) */
+ OPT_GAMMA_VECTOR_GS, /* gamma correction vector (greyscale) */
+ OPT_GAMMA_VECTOR_R, /* gamma correction vector (red) */
+ OPT_GAMMA_VECTOR_G, /* gamma correction vector (green) */
+ OPT_GAMMA_VECTOR_B, /* gamma correction vector (blue) */
+ OPT_NEGATIVE, /* swap black and white */
+ OPT_THRESHOLD, /* threshold for line art */
+ OPT_BRIGHTNESS, /* brightness */
+ OPT_CONTRAST, /* contrast */
+ OPT_ADVANCED_GROUP, /* advanced group */
+ OPT_RGB_LPR, /* lines per scsi read (RGB) */
+ OPT_GS_LPR, /* lines per scsi read (GS) */
+ NUM_OPTS /* dummy (gives number of options) */
+} SnapScan_Options;
+
+typedef enum
+{
+ MD_COLOUR = 0, /* full colour */
+ MD_BILEVELCOLOUR, /* 1-bit per channel colour */
+ MD_GREYSCALE, /* grey scale */
+ MD_LINEART, /* black and white */
+ MD_NUM_MODES
+} SnapScan_Mode;
+
+typedef enum
+{
+ SRC_FLATBED = 0, /* Flatbed (normal) */
+ SRC_TPO, /* Transparency unit */
+ SRC_ADF
+} SnapScan_Source;
+
+typedef enum
+{
+ ST_IDLE, /* between scans */
+ ST_SCAN_INIT, /* scan initialization */
+ ST_SCANNING, /* actively scanning data */
+ ST_CANCEL_INIT /* cancellation begun */
+} SnapScan_State;
+
+typedef struct snapscan_device
+{
+ SANE_Device dev;
+ SANE_Range x_range; /* x dimension of scan area */
+ SANE_Range y_range; /* y dimension of scan area */
+ SnapScan_Model model; /* type of scanner */
+ SnapScan_Bus bus; /* bus of the device usb/scsi */
+ SANE_Char *firmware_filename; /* The name of the firmware file for USB scanners */
+ struct snapscan_device *pnext;
+}
+SnapScan_Device;
+
+#define MD_AUTO 0
+#define MD_MANUAL 1
+
+#define MAX_SCSI_CMD_LEN 256 /* not that large */
+#define DEFAULT_SCANNER_BUF_SZ 1024*63
+
+typedef struct snapscan_scanner SnapScan_Scanner;
+
+#include <snapscan-sources.h>
+
+struct snapscan_scanner
+{
+ SANE_String devname; /* the scsi device name */
+ SnapScan_Device *pdev; /* the device */
+ int fd; /* scsi file descriptor */
+ int opens; /* open count */
+ int rpipe[2]; /* reader pipe descriptors */
+ int orig_rpipe_flags; /* initial reader pipe flags */
+ SANE_Pid child; /* child reader process pid */
+ SnapScan_Mode mode; /* mode */
+ SnapScan_Mode preview_mode; /* preview mode */
+ SnapScan_Source source; /* scanning source */
+ SnapScan_State state; /* scanner state */
+ u_char cmd[MAX_SCSI_CMD_LEN]; /* scsi command buffer */
+ u_char *buf; /* data buffer */
+ size_t phys_buf_sz; /* physical buffer size */
+ size_t buf_sz; /* effective buffer size */
+ size_t expected_read_bytes; /* expected amount of data in a single read */
+ size_t read_bytes; /* amount of actual data read */
+ size_t bytes_remaining; /* remaining bytes expected from scanner */
+ size_t actual_res; /* actual resolution */
+ size_t lines; /* number of scan lines */
+ size_t bytes_per_line; /* bytes per scan line */
+ size_t pixels_per_line; /* pixels per scan line */
+ u_char hconfig; /* hardware configuration byte */
+ u_char hconfig_epson; /* additional hw configuration for some Epson scanners */
+ u_char hwst; /* hardware status byte */
+ float ms_per_line; /* speed: milliseconds per scan line */
+ SANE_Bool nonblocking; /* wait on reads for data? */
+ char *sense_str; /* sense string */
+ char *as_str; /* additional sense string */
+ u_char asi1; /* first additional sense info byte */
+ u_char asi2; /* second additional sense info byte */
+ SANE_Byte chroma_offset[3]; /* chroma offsets */
+ SANE_Int chroma;
+ Source *psrc; /* data source */
+ Source *preadersrc; /* data source for reader thread */
+ SANE_Option_Descriptor options[NUM_OPTS]; /* the option descriptors */
+ Option_Value val[NUM_OPTS]; /* the options themselves... */
+ SANE_Int res; /* resolution */
+ SANE_Int bpp; /* bit depth supported by scanner*/
+ SANE_Int bpp_scan; /* bit depth used for scanning */
+ SANE_Bool preview; /* preview mode toggle */
+ SANE_Bool highquality; /* high quality mode toggle */
+ SANE_String mode_s; /* scanning mode */
+ SANE_String source_s; /* scanning source */
+ SANE_String preview_mode_s; /* scanning mode for preview */
+ SANE_Fixed tlx; /* window top left x */
+ SANE_Fixed tly; /* window top left y */
+ SANE_Fixed brx; /* window bottom right x */
+ SANE_Fixed bry; /* window bottom right y */
+ int bright; /* brightness */
+ int contrast; /* contrast */
+ SANE_String predef_window; /* predefined window name */
+ SANE_Fixed gamma_gs; /* gamma correction value (greyscale) */
+ SANE_Fixed gamma_r; /* gamma correction value (red) */
+ SANE_Fixed gamma_g; /* gamma correction value (green) */
+ SANE_Fixed gamma_b; /* gamma correction value (blue) */
+ SANE_Int *gamma_tables; /* gamma correction vectors */
+ SANE_Int *gamma_table_gs; /* gamma correction vector (greyscale) */
+ SANE_Int *gamma_table_r; /* gamma correction vector (red) */
+ SANE_Int *gamma_table_g; /* gamma correction vector (green) */
+ SANE_Int *gamma_table_b; /* gamma correction vector (blue) */
+ int gamma_length; /* length of gamma vectors */
+ SANE_Bool halftone; /* halftone toggle */
+ SANE_String dither_matrix; /* the halftone dither matrix */
+ SANE_Bool negative; /* swap black and white */
+ SANE_Int threshold; /* threshold for line art */
+ SANE_Int rgb_lpr; /* lines per scsi read (RGB) */
+ SANE_Int gs_lpr; /* lines per scsi read (greyscale) */
+ SANE_Bool firmware_loaded; /* true if firmware was downloaded */
+ SANE_Word usb_vendor; /* USB vendor id */
+ SANE_Word usb_product; /* USB product id */
+ SANE_Byte frame_no; /* frame number for film scanner */
+ SANE_Int focus_mode; /* focus mode value */
+ SANE_String focus_mode_s; /* focus mode string */
+ SANE_Word focus; /* focus point */
+};
+
+#endif
+
+/*
+ * $Log$
+ * Revision 1.42 2008/05/15 12:50:24 ellert-guest
+ * Fix for bug #306751: sanei-thread with pthreads on 64 bit
+ *
+ * Revision 1.41 2006-02-02 21:28:05 oliver-guest
+ * Corrected USB ID for Benq 310
+ *
+ * Revision 1.40 2006/01/01 22:57:01 oliver-guest
+ * Added calibration data for Benq 5150 / 5250, preliminary support for Epson Stylus CX 1500
+ *
+ * Revision 1.39 2005/12/04 15:03:00 oliver-guest
+ * Some fixes for Benq 5150
+ *
+ * Revision 1.38 2005/10/31 21:08:47 oliver-guest
+ * Distinguish between Benq 5000/5000E/5000U
+ *
+ * Revision 1.37 2005/10/24 19:46:40 oliver-guest
+ * Preview and range fix for Epson 2480/2580
+ *
+ * Revision 1.36 2005/09/28 21:33:11 oliver-guest
+ * Added 16 bit option for Epson scanners (untested)
+ *
+ * Revision 1.35 2005/09/03 10:52:11 oliver-guest
+ * Fixed debugging code for epson scanners
+ *
+ * Revision 1.34 2005/08/15 18:06:37 oliver-guest
+ * Added support for Epson 3490/3590 (thanks to Matt Judge)
+ *
+ * Revision 1.33 2005/02/08 22:17:53 oliver-guest
+ * Added IDs for Benq 5250C and 5000S
+ *
+ * Revision 1.32 2005/01/18 20:36:13 oliver-guest
+ * Added ID for Benq 5250C
+ *
+ * Revision 1.31 2004/12/01 22:12:04 oliver-guest
+ * Added support for Epson 1270
+ *
+ * Revision 1.30 2004/09/02 20:59:12 oliver-guest
+ * Added support for Epson 2480
+ *
+ * Revision 1.29 2004/06/16 19:52:27 oliver-guest
+ * Don't enforce even number of URB packages on 1212u_2. Fixes bug #300753.
+ *
+ * Revision 1.28 2004/04/08 21:53:10 oliver-guest
+ * Use sanei_thread in snapscan backend
+ *
+ * Revision 1.27 2004/03/22 00:00:40 oliver-guest
+ * Added detection for Epson 660 by USB ID since new models use new ID strings
+ *
+ * Revision 1.26 2003/10/21 20:43:25 oliver-guest
+ * Bugfixes for SnapScan backend
+ *
+ * Revision 1.25 2003/10/07 19:41:34 oliver-guest
+ * Updates for Epson Perfection 1670
+ *
+ * Revision 1.24 2003/10/07 18:29:20 oliver-guest
+ * Initial support for Epson 1670, minor bugfix
+ *
+ * Revision 1.23 2003/09/12 16:10:33 hmg-guest
+ * Moved union Option_Value from backend header files to sanei_backend.h. No need
+ * to copy it over and over again. Changed header inclusion order in backend
+ * files to include backend.h after sanei_backend.h. Based on a patch from stef
+ * <stef-listes@wanadoo.fr>.
+ *
+ * Revision 1.22 2003/08/19 21:05:08 oliverschwartz
+ * Scanner ID cleanup
+ *
+ * Revision 1.21 2003/04/30 20:49:40 oliverschwartz
+ * SnapScan backend 1.4.26
+ *
+ * Revision 1.38 2003/04/30 20:42:22 oliverschwartz
+ * Added support for Agfa Arcus 1200 (supplied by Valtteri Vuorikoski)
+ *
+ * Revision 1.37 2003/02/05 22:11:11 oliverschwartz
+ * Added Epson Perfection 660
+ *
+ * Revision 1.36 2003/01/08 21:16:36 oliverschwartz
+ * Added support for Acer / Benq 310U
+ *
+ * Revision 1.35 2002/12/10 20:14:12 oliverschwartz
+ * Enable color offset correction for SnapScan300
+ *
+ * Revision 1.34 2002/10/12 10:40:48 oliverschwartz
+ * Added support for Snapscan e10
+ *
+ * Revision 1.33 2002/09/24 16:07:47 oliverschwartz
+ * Added support for Benq 5000
+ *
+ * Revision 1.32 2002/07/12 22:22:47 oliverschwartz
+ * Correct driver description for 4300_2
+ *
+ * Revision 1.31 2002/04/27 14:44:27 oliverschwartz
+ * - Remove SCSI debug options
+ *
+ * Revision 1.30 2002/04/23 22:51:00 oliverschwartz
+ * Cleanup, support for ADF
+ *
+ * Revision 1.29 2002/03/24 12:14:34 oliverschwartz
+ * Add Snapcan_Driver_desc
+ *
+ * Revision 1.28 2002/01/23 20:38:20 oliverschwartz
+ * Fix model ID for e42
+ * Improve recognition of Acer 320U
+ *
+ * Revision 1.27 2002/01/06 18:34:02 oliverschwartz
+ * Added support for Snapscan e42 thanks to Yari Ad� Petralanda
+ *
+ * Revision 1.26 2001/12/20 23:18:01 oliverschwartz
+ * Remove tmpfname
+ *
+ * Revision 1.25 2001/12/18 18:28:35 oliverschwartz
+ * Removed temporary file
+ *
+ * Revision 1.24 2001/12/12 19:44:59 oliverschwartz
+ * Clean up CVS log
+ *
+ * Revision 1.23 2001/11/25 18:51:41 oliverschwartz
+ * added support for SnapScan e52 thanks to Rui Lopes
+ *
+ * Revision 1.22 2001/11/16 20:56:47 oliverschwartz
+ * additional identification string for e26 added
+ *
+ * Revision 1.21 2001/11/16 20:28:35 oliverschwartz
+ * add support for Snapscan e26
+ *
+ * Revision 1.20 2001/11/16 20:23:16 oliverschwartz
+ * Merge with sane-1.0.6
+ * - Check USB vendor IDs to avoid hanging scanners
+ * - fix bug in dither matrix computation
+ *
+ * Revision 1.19 2001/10/11 14:02:10 oliverschwartz
+ * Distinguish between e20/e25 and e40/e50
+ *
+ * Revision 1.18 2001/10/10 10:11:10 oliverschwartz
+ * Add support for Snapscan e25 thanks to Rodolphe Suescun
+ *
+ * Revision 1.17 2001/10/08 18:22:02 oliverschwartz
+ * - Disable quality calibration for Acer Vuego 310F
+ * - Use sanei_scsi_max_request_size as scanner buffer size
+ * for SCSI devices
+ * - Added new devices to snapscan.desc
+ *
+ * Revision 1.16 2001/09/28 13:39:16 oliverschwartz
+ * - Added "Snapscan 300" ID string
+ * - cleanup
+ * - more debugging messages in snapscan-sources.c
+ *
+ * Revision 1.15 2001/09/18 15:01:07 oliverschwartz
+ * - Read scanner id string again after firmware upload
+ * to indentify correct model
+ * - Make firmware upload work for AGFA scanners
+ * - Change copyright notice
+ *
+ * Revision 1.14 2001/09/17 10:01:08 sable
+ * Added model AGFA 1236U
+ *
+ * Revision 1.13 2001/09/09 20:39:52 oliverschwartz
+ * add identification for 620ST+
+ *
+ * Revision 1.12 2001/09/09 18:06:32 oliverschwartz
+ * add changes from Acer (new models; automatic firmware upload for USB scanners); fix distorted colour scans after greyscale scans (call set_window only in sane_start); code cleanup
+ *
+ * Revision 1.11 2001/04/10 12:38:21 sable
+ * Adding e20 support thanks to Steffen Hbner
+ *
+ * Revision 1.10 2001/04/10 11:04:31 sable
+ * Adding support for snapscan e40 an e50 thanks to Giuseppe Tanzilli
+ *
+ * Revision 1.9 2001/03/17 22:53:21 sable
+ * Applying Mikael Magnusson patch concerning Gamma correction
+ * Support for 1212U_2
+ *
+ * Revision 1.8 2000/11/10 01:01:59 sable
+ * USB (kind of) autodetection
+ *
+ * Revision 1.7 2000/11/01 01:26:43 sable
+ * Support for 1212U
+ *
+ * Revision 1.6 2000/10/28 14:06:35 sable
+ * Add support for Acer300f
+ *
+ * Revision 1.5 2000/10/15 17:54:58 cbagwell
+ * Adding USB files for optional USB compiles.
+ *
+ * Revision 1.4 2000/10/13 03:50:27 cbagwell
+ * Updating to source from SANE 1.0.3. Calling this versin 1.1
+ *
+ * Revision 1.3 2000/08/12 15:09:37 pere
+ * Merge devel (v1.0.3) into head branch.
+ *
+ * Revision 1.1.1.1.2.2 2000/07/13 04:47:50 pere
+ * New snapscan backend version dated 20000514 from Steve Underwood.
+ *
+ * Revision 1.2.1 2000/05/14 13:30:20 coppice
+ * Some reformatting a minor tidying.
+ *
+ * Revision 1.2 2000/03/05 13:55:21 pere
+ * Merged main branch with current DEVEL_1_9.
+ *
+ * Revision 1.1.1.1.2.1 1999/09/15 18:20:02 charter
+ * Early version 1.0 snapscan.h
+ *
+ * Revision 2.2 1999/09/09 18:25:02 charter
+ * Checkpoint. Removed references to snapscan-310.c stuff using
+ * "#ifdef OBSOLETE".
+ *
+ * Revision 2.1 1999/09/08 03:05:05 charter
+ * Start of branch 2; same as 1.30.
+ *
+ * Revision 1.30 1999/09/07 20:54:07 charter
+ * Changed expected_data_len to bytes_remaining.
+ *
+ * Revision 1.29 1999/09/02 05:29:46 charter
+ * Fixed the spelling of Petter's name (again).
+ *
+ * Revision 1.28 1999/09/02 05:28:50 charter
+ * Added Gary Plewa's name to the list of contributors.
+ *
+ * Revision 1.27 1999/09/02 04:48:25 charter
+ * Added models and strings for the Acer PRISA 620s (thanks to Gary Plewa).
+ *
+ * Revision 1.26 1999/09/02 02:01:46 charter
+ * Checking in rev 1.26 (for backend version 0.7) again.
+ * This is part of the recovery from the great disk crash of Sept 1, 1999.
+ *
+ * Revision 1.26 1999/07/09 20:54:34 charter
+ * Modifications for SnapScan 1236s (Petter Reinholdsten).
+ *
+ * Revision 1.25 1998/12/16 18:40:53 charter
+ * Commented the INOPERATIVE define to get rid of spurious brightness
+ * and contrast controls accidentally reintroduced previously.
+ *
+ * Revision 1.24 1998/09/07 06:04:58 charter
+ * Merged in Wolfgang Goeller's changes (Vuego 310S, bugfixes).
+ *
+ * Revision 1.23 1998/05/11 17:03:22 charter
+ * Added Mikko's threshold stuff
+ *
+ * Revision 1.22 1998/03/10 23:43:05 eblot
+ * Changing 310/600 models support (structure)
+ *
+ * Revision 1.21 1998/03/08 14:24:43 eblot
+ * Debugging
+ *
+ * Revision 1.20 1998/02/15 21:55:03 charter
+ * From Emmanuel Blot:
+ * Added rgb ring buffer to handle snapscan 310 data specs.
+ *
+ * Revision 1.19 1998/02/06 02:29:52 charter
+ * Added SnapScan_Mode and SnapScan_Model enums.
+ *
+ * Revision 1.18 1998/01/31 23:59:51 charter
+ * Changed window coordinates type to SANE_Fixed (what it should be
+ * for a length).
+ *
+ * Revision 1.17 1998/01/30 19:18:41 charter
+ * Added sense_str and as_str to SnapScan_Scanner; these are intended to
+ * be set by the sense handler.
+ *
+ * Revision 1.16 1998/01/30 11:02:17 charter
+ * Added opens to the SnapScan_Scanner to support open_scanner() and
+ * close_scanner().
+ *
+ * Revision 1.15 1998/01/25 09:57:32 charter
+ * Added more SCSI command options and a group for them.
+ *
+ * Revision 1.14 1998/01/25 08:50:49 charter
+ * Added preview mode option.
+ *
+ * Revision 1.13 1998/01/25 02:24:31 charter
+ * Added OPT_NEGATIVE and the extra sense data bytes.
+ *
+ * Revision 1.12 1998/01/24 05:14:56 charter
+ * Added stuff for RGB gamma correction and for BW mode halftoning.
+ *
+ * Revision 1.11 1998/01/23 13:02:45 charter
+ * Added rgb_lpr and gs_lpr so the user can tune scanning performance.
+ *
+ * Revision 1.10 1998/01/23 07:39:08 charter
+ * Reindented using GNU convention at David Mosberger-Tang's request.
+ * Added ms_per_line to SnapScan_Scanner.
+ *
+ * Revision 1.9 1998/01/22 05:14:23 charter
+ * The bit depth option has been replaced with a mode option. We support
+ * full color, greyscale and lineart modes.
+ *
+ * Revision 1.8 1998/01/21 20:40:13 charter
+ * Added copyright info; added the new SnapScan_State type and
+ * replaced the scanning member of SnapScan_Scanner with a state
+ * member. This is for supporting cancellation.
+ *
+ * Revision 1.7 1998/01/21 11:05:20 charter
+ * Inoperative options now #defined out.
+ *
+ * Revision 1.6 1997/11/26 15:40:24 charter
+ * Brightness and contrast added by Michel.
+ *
+ * Revision 1.5 1997/11/12 12:52:16 charter
+ * Added OPT_INQUIRY for the inquiry button.
+ *
+ * Revision 1.4 1997/11/10 05:51:45 charter
+ * Added stuff for the child reader process and pipe.
+ *
+ * Revision 1.3 1997/11/03 03:16:46 charter
+ * Added buffers and window parameter variables to the scanner structure.
+ *
+ * Revision 1.2 1997/10/14 05:59:53 charter
+ * Basic options and structures added.
+ *
+ * Revision 1.1 1997/10/13 02:25:54 charter
+ * Initial revision
+ * */