Initial import of sane-backends version 1.0.24-1.2

1 files changed, 751 insertions, 0 deletions

diff --git a/backend/snapscan.h b/backend/snapscan.h
new file mode 100644
index 0000000..2795d88
--- /dev/null
+++ b/backend/snapscan.h
@@ -0,0 +1,751 @@
+/* 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
+ * */