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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /backend/sceptre.c
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'backend/sceptre.c')
-rw-r--r--backend/sceptre.c2094
1 files changed, 2094 insertions, 0 deletions
diff --git a/backend/sceptre.c b/backend/sceptre.c
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--- /dev/null
+++ b/backend/sceptre.c
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+/* sane - Scanner Access Now Easy.
+
+ Copyright (C) 2002 Frank Zago (sane at zago dot net)
+ Copyright (C) 2002 Other SANE contributors
+
+ 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.
+*/
+
+/*
+ $Id$
+ Sceptre S1200 SCSI scanner (sometimes also called S120)
+*/
+
+/*--------------------------------------------------------------------------*/
+
+#define BUILD 10 /* 2002-03-21 */
+#define BACKEND_NAME sceptre
+#define SCEPTRE_CONFIG_FILE "sceptre.conf"
+
+/*--------------------------------------------------------------------------*/
+
+
+#include "../include/sane/config.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include "../include/sane/sane.h"
+#include "../include/sane/sanei.h"
+#include "../include/sane/saneopts.h"
+#include "../include/sane/sanei_scsi.h"
+#include "../include/sane/sanei_debug.h"
+#include "../include/sane/sanei_backend.h"
+#include "../include/sane/sanei_config.h"
+#include "../include/lassert.h"
+
+#include "sceptre.h"
+
+/*--------------------------------------------------------------------------*/
+
+static const SANE_String scan_mode_list[] = { LINEART_STR, HALFTONE_STR,
+ GRAY_STR, COLOR_STR, NULL
+};
+
+static const SANE_Range gamma_range = {
+ 0, /* minimum */
+ 255, /* maximum */
+ 0 /* quantization */
+};
+
+static const SANE_Range threshold_range = {
+ 0, /* minimum */
+ 255, /* maximum */
+ 0 /* quantization */
+};
+
+static const SANE_Range halftone_range = {
+ 1, /* minimum */
+ 4, /* maximum */
+ 0 /* quantization */
+};
+
+/*--------------------------------------------------------------------------*/
+
+#define NUM_OF_RES 15
+/* Table of supported resolution and number of lines of color shifting. */
+static const SANE_Word resolutions_list[NUM_OF_RES + 1] = {
+ NUM_OF_RES, 10, 25, 30, 45, 75, 90, 150, 300, 450, 600, 750, 900, 1050,
+ 1125, 1200
+};
+
+static const SANE_Word color_shift_list[NUM_OF_RES + 1] = {
+ NUM_OF_RES, 0, 0, 0, 0, 1, 1, 2, 4, 6, 8, 10, 12, 14, 15, 16
+};
+
+/*--------------------------------------------------------------------------*/
+
+/* Define the supported scanners and their characteristics. */
+static const struct scanners_supported scanners[] = {
+ /* { 6, "KINPO ", "Vividscan S600 ", "KINPO", "S600" }, */
+ {6, "KINPO ", "Vividscan S120 ", "Sceptre", "S1200"}
+};
+
+/*--------------------------------------------------------------------------*/
+
+/* List of scanner attached. */
+static Sceptre_Scanner *first_dev = NULL;
+static int num_devices = 0;
+static const SANE_Device **devlist = NULL;
+
+
+/* Local functions. */
+
+/* Display a buffer in the log. */
+static void
+hexdump (int level, const char *comment, unsigned char *p, int l)
+{
+ int i;
+ char line[128];
+ char *ptr;
+
+ DBG (level, "%s\n", comment);
+ ptr = line;
+ for (i = 0; i < l; i++, p++)
+ {
+ if ((i % 16) == 0)
+ {
+ if (ptr != line)
+ {
+ *ptr = '\0';
+ DBG (level, "%s\n", line);
+ ptr = line;
+ }
+ sprintf (ptr, "%3.3d:", i);
+ ptr += 4;
+ }
+ sprintf (ptr, " %2.2x", *p);
+ ptr += 3;
+ }
+ *ptr = '\0';
+ DBG (level, "%s\n", line);
+}
+
+/* Initialize a scanner entry. Return an allocated scanner with some
+ * preset values. */
+static Sceptre_Scanner *
+sceptre_init (void)
+{
+ Sceptre_Scanner *dev;
+
+ DBG (DBG_proc, "sceptre_init: enter\n");
+
+ /* Allocate a new scanner entry. */
+ dev = malloc (sizeof (Sceptre_Scanner));
+ if (dev == NULL)
+ {
+ return NULL;
+ }
+
+ memset (dev, 0, sizeof (Sceptre_Scanner));
+
+ /* Allocate the buffer used to transfer the SCSI data. */
+ dev->buffer_size = 64 * 1024;
+ dev->buffer = malloc (dev->buffer_size);
+ if (dev->buffer == NULL)
+ {
+ free (dev);
+ return NULL;
+ }
+
+ dev->sfd = -1;
+
+ DBG (DBG_proc, "sceptre_init: exit\n");
+
+ return (dev);
+}
+
+/* Closes an open scanner. */
+static void
+sceptre_close (Sceptre_Scanner * dev)
+{
+ DBG (DBG_proc, "sceptre_close: enter\n");
+
+ if (dev->sfd != -1)
+ {
+ sanei_scsi_close (dev->sfd);
+ dev->sfd = -1;
+ }
+
+ DBG (DBG_proc, "sceptre_close: exit\n");
+}
+
+/* Frees the memory used by a scanner. */
+static void
+sceptre_free (Sceptre_Scanner * dev)
+{
+ int i;
+
+ DBG (DBG_proc, "sceptre_free: enter\n");
+
+ if (dev == NULL)
+ return;
+
+ sceptre_close (dev);
+ if (dev->devicename)
+ {
+ free (dev->devicename);
+ }
+ if (dev->buffer)
+ {
+ free (dev->buffer);
+ }
+ if (dev->image)
+ {
+ free (dev->image);
+ }
+ for (i = 1; i < OPT_NUM_OPTIONS; i++)
+ {
+ if (dev->opt[i].type == SANE_TYPE_STRING && dev->val[i].s)
+ {
+ free (dev->val[i].s);
+ }
+ }
+
+ free (dev);
+
+ DBG (DBG_proc, "sceptre_free: exit\n");
+}
+
+/* Inquiry a device and returns TRUE if is supported. */
+static int
+sceptre_identify_scanner (Sceptre_Scanner * dev)
+{
+ CDB cdb;
+ SANE_Status status;
+ size_t size;
+ int i;
+
+ DBG (DBG_proc, "sceptre_identify_scanner: enter\n");
+
+ size = 36;
+ MKSCSI_INQUIRY (cdb, size);
+ status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len,
+ NULL, 0, dev->buffer, &size);
+
+ if (status)
+ {
+ DBG (DBG_error,
+ "sceptre_identify_scanner: inquiry failed with status %s\n",
+ sane_strstatus (status));
+ return (SANE_FALSE);
+ }
+
+ if (size < 36)
+ {
+ DBG (DBG_error,
+ "sceptre_identify_scanner: not enough data to identify device\n");
+ return (SANE_FALSE);
+ }
+
+ dev->scsi_type = dev->buffer[0] & 0x1f;
+ memcpy (dev->scsi_vendor, dev->buffer + 0x08, 0x08);
+ dev->scsi_vendor[0x08] = 0;
+ memcpy (dev->scsi_product, dev->buffer + 0x10, 0x010);
+ dev->scsi_product[0x10] = 0;
+ memcpy (dev->scsi_version, dev->buffer + 0x20, 0x04);
+ dev->scsi_version[0x04] = 0;
+
+ DBG (DBG_info, "device is \"%s\" \"%s\" \"%s\"\n",
+ dev->scsi_vendor, dev->scsi_product, dev->scsi_version);
+
+ /* Lookup through the supported scanners table to find if this
+ * backend supports that one. */
+ for (i = 0; i < NELEMS (scanners); i++)
+ {
+ if (dev->scsi_type == scanners[i].scsi_type &&
+ strcmp (dev->scsi_vendor, scanners[i].scsi_vendor) == 0 &&
+ strcmp (dev->scsi_product, scanners[i].scsi_product) == 0)
+ {
+
+ DBG (DBG_error, "sceptre_identify_scanner: scanner supported\n");
+
+ dev->scnum = i;
+
+ return (SANE_TRUE);
+ }
+ }
+
+ DBG (DBG_proc, "sceptre_identify_scanner: exit\n");
+
+ return (SANE_FALSE);
+}
+
+/* Return the number of bytes left to read. */
+static SANE_Status
+sceptre_get_status (Sceptre_Scanner * dev, size_t * data_left)
+{
+ size_t size;
+ CDB cdb;
+ SANE_Status status;
+
+ DBG (DBG_proc, "sceptre_get_status: enter\n");
+
+ /* Get status. */
+ size = 0x10;
+ MKSCSI_GET_DATA_BUFFER_STATUS (cdb, 1, size);
+ status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len,
+ NULL, 0, dev->buffer, &size);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sceptre_get_status: cannot get buffer status\n");
+ *data_left = 0;
+ return (SANE_STATUS_IO_ERROR);
+ }
+
+ if (size != 16)
+ {
+ DBG (DBG_error,
+ "sceptre_get_status: invalid data size returned (%ld)\n",
+ (long) size);
+ return (SANE_STATUS_IO_ERROR);
+ }
+
+ hexdump (DBG_info2, "GET BUFFER STATUS result", dev->buffer, 16);
+
+ /* Read the size left. The scanner returns the rest of the
+ * bytes to read, not just what's in its buffers. */
+ *data_left = B32TOI (&dev->buffer[8]);
+
+ if (dev->raster_real == 0)
+ {
+ /* First call. Set the correct parameters. */
+ dev->raster_real = B16TOI (&dev->buffer[12]) * 3;
+ dev->params.lines = B16TOI (&dev->buffer[12]);
+ dev->params.pixels_per_line = B16TOI (&dev->buffer[14]);
+ }
+
+ DBG (DBG_proc, "sceptre_get_status: exit, data_left=%ld\n",
+ (long) *data_left);
+
+ return (SANE_STATUS_GOOD);
+}
+
+/*
+ * Adjust the rasters. This function is used during a color scan,
+ * because the scanner does not present a format sane can interpret
+ * directly.
+ *
+ * The scanner sends the colors by rasters (R then G then B), whereas
+ * sane is waiting for a group of 3 bytes per color. To make things
+ * funnier, the rasters are shifted. This shift factor depends on the
+ * resolution used. The format of those raster is:
+ * R...R RG...RG RGB...RGB BG...GB B...B
+ *
+ * So this function reorders all that mess. It gets the input from
+ * dev->buffer and write the output in dev->image. size_in the the
+ * length of the valid data in dev->buffer.
+ */
+static void
+sceptre_adjust_raster (Sceptre_Scanner * dev, size_t size_in)
+{
+ int nb_rasters; /* number of rasters in dev->buffer */
+
+ int raster; /* current raster number in buffer */
+ int line; /* line number for that raster */
+ int colour; /* colour for that raster */
+ size_t offset;
+
+ DBG (DBG_proc, "sceptre_adjust_raster: enter\n");
+
+ assert (dev->scan_mode == SCEPTRE_COLOR);
+ assert ((size_in % dev->params.bytes_per_line) == 0);
+
+ if (size_in == 0)
+ {
+ return;
+ }
+
+ /*
+ * The color coding is one line for each color (in the RGB order).
+ * Recombine that stuff to create a RGB value for each pixel.
+ */
+
+ nb_rasters = size_in / dev->raster_size;
+
+ for (raster = 0; raster < nb_rasters; raster++)
+ {
+
+ /*
+ * Find the color to which this raster belongs to.
+ * 0 = red
+ * 1 = green
+ * 2 = blue
+ *
+ * When blue comes, it always finishes the current line;
+ */
+ line = 0;
+ if (dev->raster_num < dev->color_shift)
+ {
+ colour = 0; /* Red */
+ line = dev->raster_num;
+ }
+ else if (dev->raster_num < (3 * dev->color_shift))
+ {
+ /* even = red, odd = green */
+ colour = (dev->raster_num - dev->color_shift) % 2;
+ if (colour)
+ {
+ /* Green */
+ line = (dev->raster_num - dev->color_shift) / 2;
+ }
+ else
+ {
+ /* Red */
+ line = (dev->raster_num + dev->color_shift) / 2;
+ }
+ }
+ else if (dev->raster_num >= dev->raster_real - dev->color_shift)
+ {
+ /* Blue */
+ colour = 2;
+ line = dev->line;
+ }
+ else if (dev->raster_num >= dev->raster_real - 3 * dev->color_shift)
+ {
+ /* Green or Blue */
+ colour =
+ (dev->raster_real - dev->raster_num - dev->color_shift) % 2 + 1;
+ if (colour == 1)
+ {
+ /* Green */
+ line = dev->line + dev->color_shift;
+ }
+ else
+ {
+ /* Blue */
+ line = dev->line;
+ }
+ }
+ else
+ {
+ colour = (dev->raster_num - 3 * dev->color_shift) % 3;
+ switch (colour)
+ {
+ case 0:
+ /* Red */
+ line = (dev->raster_num + 3 * dev->color_shift) / 3;
+ break;
+ case 1:
+ /* Green */
+ line = dev->raster_num / 3;
+ break;
+ case 2:
+ /* Blue */
+ line = (dev->raster_num - 3 * dev->color_shift) / 3;
+ break;
+ }
+ }
+
+ /* Adjust the line number relative to the image. */
+ line -= dev->line;
+
+ offset = dev->image_end + line * dev->params.bytes_per_line;
+
+ assert (offset <= (dev->image_size - dev->raster_size));
+
+ /* Copy the raster to the temporary image. */
+ {
+ int i;
+ unsigned char *src = dev->buffer + raster * dev->raster_size;
+ unsigned char *dest = dev->image + offset + colour;
+
+ for (i = 0; i < dev->raster_size; i++)
+ {
+ *dest = *src;
+ src++;
+ dest += 3;
+ }
+ }
+
+ if (colour == 2)
+ {
+ /* This blue raster completes a new line */
+ dev->line++;
+ dev->image_end += dev->params.bytes_per_line;
+ }
+
+ dev->raster_num++;
+ }
+
+ DBG (DBG_proc, "sceptre_adjust_raster: exit\n");
+}
+
+/* SCSI sense handler. Callback for SANE.
+ *
+ * Since this scanner does not have REQUEST SENSE, it is always an
+ * error if this function is called.*/
+static SANE_Status
+sceptre_sense_handler (int scsi_fd, unsigned char __sane_unused__ *result, void __sane_unused__ *arg)
+{
+ DBG (DBG_proc, "sceptre_sense_handler (scsi_fd = %d)\n", scsi_fd);
+
+ return SANE_STATUS_IO_ERROR;
+}
+
+/* Attach a scanner to this backend. */
+static SANE_Status
+attach_scanner (const char *devicename, Sceptre_Scanner ** devp)
+{
+ Sceptre_Scanner *dev;
+ int sfd;
+
+ DBG (DBG_sane_proc, "attach_scanner: %s\n", devicename);
+
+ if (devp)
+ *devp = NULL;
+
+ /* Check if we know this device name. */
+ for (dev = first_dev; dev; dev = dev->next)
+ {
+ if (strcmp (dev->sane.name, devicename) == 0)
+ {
+ if (devp)
+ {
+ *devp = dev;
+ }
+ DBG (DBG_info, "device is already known\n");
+ return SANE_STATUS_GOOD;
+ }
+ }
+
+ /* Allocate a new scanner entry. */
+ dev = sceptre_init ();
+ if (dev == NULL)
+ {
+ DBG (DBG_error, "ERROR: not enough memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ DBG (DBG_info, "attach_scanner: opening %s\n", devicename);
+
+ if (sanei_scsi_open (devicename, &sfd, sceptre_sense_handler, dev) != 0)
+ {
+ DBG (DBG_error, "ERROR: attach_scanner: open failed\n");
+ sceptre_free (dev);
+ return SANE_STATUS_INVAL;
+ }
+
+ /* Fill some scanner specific values. */
+ dev->devicename = strdup (devicename);
+ dev->sfd = sfd;
+
+ /* Now, check that it is a scanner we support. */
+ if (sceptre_identify_scanner (dev) == SANE_FALSE)
+ {
+ DBG (DBG_error,
+ "ERROR: attach_scanner: scanner-identification failed\n");
+ sceptre_free (dev);
+ return SANE_STATUS_INVAL;
+ }
+
+ sceptre_close (dev);
+
+ /* Set the default options for that scanner. */
+ dev->sane.name = dev->devicename;
+ dev->sane.vendor = scanners[dev->scnum].real_vendor;
+ dev->sane.model = scanners[dev->scnum].real_product;
+ dev->sane.type = SANE_I18N ("flatbed scanner");
+
+ dev->resolution_range.min = SANE_FIX (50);
+ dev->resolution_range.max = SANE_FIX (1200);
+ dev->resolution_range.quant = SANE_FIX (1);
+
+ /*
+ * The S1200 has an area of 8.5 inches / 11.7 inches. (A4 like)
+ * That's roughly 215*297 mm
+ * The values are coded by
+ * size in inch * 600 dpi.
+ * The maximums are:
+ * X: 8.5 inches * 600 = 5100 dots
+ * Y: 11.7 inches * 600 = 7020
+ * (although the windows driver stops at 7019)
+ *
+ * The values are stored in mm. Inches sucks anyway.
+ * X: 5078 dots (22 dots lost)
+ * Y: 7015 dots (5 dots lost)
+ *
+ * There seems to be a minimum area, but yet to be determined.
+ */
+ dev->x_range.min = SANE_FIX (0);
+ dev->x_range.max = SANE_FIX (215.90); /* in mm */
+ dev->x_range.quant = 0;
+
+ dev->y_range.min = SANE_FIX (0);
+ dev->y_range.max = SANE_FIX (297.14); /* in mm */
+ dev->y_range.quant = SANE_FIX (0);
+
+ /* Link the scanner with the others. */
+ dev->next = first_dev;
+ first_dev = dev;
+
+ if (devp)
+ {
+ *devp = dev;
+ }
+
+ num_devices++;
+
+ DBG (DBG_proc, "attach_scanner: exit\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+attach_one (const char *dev)
+{
+ attach_scanner (dev, NULL);
+ return SANE_STATUS_GOOD;
+}
+
+/* Reset the options for that scanner. */
+static void
+sceptre_init_options (Sceptre_Scanner * dev)
+{
+ int i;
+
+ DBG (DBG_proc, "sceptre_init_options: enter\n");
+
+ /* Pre-initialize the options. */
+ memset (dev->opt, 0, sizeof (dev->opt));
+ memset (dev->val, 0, sizeof (dev->val));
+
+ for (i = 0; i < OPT_NUM_OPTIONS; ++i)
+ {
+ dev->opt[i].size = sizeof (SANE_Word);
+ dev->opt[i].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT;
+ }
+
+ /* Number of options. */
+ dev->opt[OPT_NUM_OPTS].name = SANE_NAME_NUM_OPTIONS;
+ dev->opt[OPT_NUM_OPTS].title = SANE_TITLE_NUM_OPTIONS;
+ dev->opt[OPT_NUM_OPTS].desc = SANE_DESC_NUM_OPTIONS;
+ dev->opt[OPT_NUM_OPTS].type = SANE_TYPE_INT;
+ dev->opt[OPT_NUM_OPTS].cap = SANE_CAP_SOFT_DETECT;
+ dev->val[OPT_NUM_OPTS].w = OPT_NUM_OPTIONS;
+
+ /* Mode group */
+ dev->opt[OPT_MODE_GROUP].title = SANE_I18N ("Scan Mode");
+ dev->opt[OPT_MODE_GROUP].desc = ""; /* not valid for a group */
+ dev->opt[OPT_MODE_GROUP].type = SANE_TYPE_GROUP;
+ dev->opt[OPT_MODE_GROUP].cap = 0;
+ dev->opt[OPT_MODE_GROUP].size = 0;
+ dev->opt[OPT_MODE_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+ /* Scanner supported modes */
+ dev->opt[OPT_MODE].name = SANE_NAME_SCAN_MODE;
+ dev->opt[OPT_MODE].title = SANE_TITLE_SCAN_MODE;
+ dev->opt[OPT_MODE].desc = SANE_DESC_SCAN_MODE;
+ dev->opt[OPT_MODE].type = SANE_TYPE_STRING;
+ dev->opt[OPT_MODE].size = 30; /* should define yet another max_string_size() */
+ dev->opt[OPT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+ dev->opt[OPT_MODE].constraint.string_list =
+ (SANE_String_Const *) scan_mode_list;
+ dev->val[OPT_MODE].s = (SANE_Char *) strdup (scan_mode_list[0]);
+
+ /* Common resolution */
+ dev->opt[OPT_RESOLUTION].name = SANE_NAME_SCAN_RESOLUTION;
+ dev->opt[OPT_RESOLUTION].title = SANE_TITLE_SCAN_RESOLUTION;
+ dev->opt[OPT_RESOLUTION].desc = SANE_DESC_SCAN_RESOLUTION;
+ dev->opt[OPT_RESOLUTION].type = SANE_TYPE_INT;
+ dev->opt[OPT_RESOLUTION].unit = SANE_UNIT_DPI;
+ dev->opt[OPT_RESOLUTION].constraint_type = SANE_CONSTRAINT_WORD_LIST;
+ dev->opt[OPT_RESOLUTION].constraint.word_list = resolutions_list;
+ dev->val[OPT_RESOLUTION].w = 150;
+
+ /* Geometry group */
+ dev->opt[OPT_GEOMETRY_GROUP].title = SANE_I18N ("Geometry");
+ dev->opt[OPT_GEOMETRY_GROUP].desc = ""; /* not valid for a group */
+ dev->opt[OPT_GEOMETRY_GROUP].type = SANE_TYPE_GROUP;
+ dev->opt[OPT_GEOMETRY_GROUP].cap = SANE_CAP_ADVANCED;
+ dev->opt[OPT_GEOMETRY_GROUP].size = 0;
+ dev->opt[OPT_GEOMETRY_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+ /* Upper left X */
+ dev->opt[OPT_TL_X].name = SANE_NAME_SCAN_TL_X;
+ dev->opt[OPT_TL_X].title = SANE_TITLE_SCAN_TL_X;
+ dev->opt[OPT_TL_X].desc = SANE_DESC_SCAN_TL_X;
+ dev->opt[OPT_TL_X].type = SANE_TYPE_FIXED;
+ dev->opt[OPT_TL_X].unit = SANE_UNIT_MM;
+ dev->opt[OPT_TL_X].constraint_type = SANE_CONSTRAINT_RANGE;
+ dev->opt[OPT_TL_X].constraint.range = &(dev->x_range);
+ dev->val[OPT_TL_X].w = dev->x_range.min;
+
+ /* Upper left Y */
+ dev->opt[OPT_TL_Y].name = SANE_NAME_SCAN_TL_Y;
+ dev->opt[OPT_TL_Y].title = SANE_TITLE_SCAN_TL_Y;
+ dev->opt[OPT_TL_Y].desc = SANE_DESC_SCAN_TL_Y;
+ dev->opt[OPT_TL_Y].type = SANE_TYPE_FIXED;
+ dev->opt[OPT_TL_Y].unit = SANE_UNIT_MM;
+ dev->opt[OPT_TL_Y].constraint_type = SANE_CONSTRAINT_RANGE;
+ dev->opt[OPT_TL_Y].constraint.range = &(dev->y_range);
+ dev->val[OPT_TL_Y].w = dev->y_range.min;
+
+ /* bottom-right x */
+ dev->opt[OPT_BR_X].name = SANE_NAME_SCAN_BR_X;
+ dev->opt[OPT_BR_X].title = SANE_TITLE_SCAN_BR_X;
+ dev->opt[OPT_BR_X].desc = SANE_DESC_SCAN_BR_X;
+ dev->opt[OPT_BR_X].type = SANE_TYPE_FIXED;
+ dev->opt[OPT_BR_X].unit = SANE_UNIT_MM;
+ dev->opt[OPT_BR_X].constraint_type = SANE_CONSTRAINT_RANGE;
+ dev->opt[OPT_BR_X].constraint.range = &(dev->x_range);
+ dev->val[OPT_BR_X].w = dev->x_range.max;
+
+ /* bottom-right y */
+ dev->opt[OPT_BR_Y].name = SANE_NAME_SCAN_BR_Y;
+ dev->opt[OPT_BR_Y].title = SANE_TITLE_SCAN_BR_Y;
+ dev->opt[OPT_BR_Y].desc = SANE_DESC_SCAN_BR_Y;
+ dev->opt[OPT_BR_Y].type = SANE_TYPE_FIXED;
+ dev->opt[OPT_BR_Y].unit = SANE_UNIT_MM;
+ dev->opt[OPT_BR_Y].constraint_type = SANE_CONSTRAINT_RANGE;
+ dev->opt[OPT_BR_Y].constraint.range = &(dev->y_range);
+ dev->val[OPT_BR_Y].w = dev->y_range.max;
+
+ /* Enhancement group */
+ dev->opt[OPT_ENHANCEMENT_GROUP].title = SANE_I18N ("Enhancement");
+ dev->opt[OPT_ENHANCEMENT_GROUP].desc = ""; /* not valid for a group */
+ dev->opt[OPT_ENHANCEMENT_GROUP].type = SANE_TYPE_GROUP;
+ dev->opt[OPT_ENHANCEMENT_GROUP].cap = 0;
+ dev->opt[OPT_ENHANCEMENT_GROUP].size = 0;
+ dev->opt[OPT_ENHANCEMENT_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+ /* custom-gamma table */
+ dev->opt[OPT_CUSTOM_GAMMA].name = SANE_NAME_CUSTOM_GAMMA;
+ dev->opt[OPT_CUSTOM_GAMMA].title = SANE_TITLE_CUSTOM_GAMMA;
+ dev->opt[OPT_CUSTOM_GAMMA].desc = SANE_DESC_CUSTOM_GAMMA;
+ dev->opt[OPT_CUSTOM_GAMMA].type = SANE_TYPE_BOOL;
+ dev->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
+ dev->val[OPT_CUSTOM_GAMMA].w = SANE_FALSE;
+
+ /* red gamma vector */
+ dev->opt[OPT_GAMMA_VECTOR_R].name = SANE_NAME_GAMMA_VECTOR_R;
+ dev->opt[OPT_GAMMA_VECTOR_R].title = SANE_TITLE_GAMMA_VECTOR_R;
+ dev->opt[OPT_GAMMA_VECTOR_R].desc = SANE_DESC_GAMMA_VECTOR_R;
+ dev->opt[OPT_GAMMA_VECTOR_R].type = SANE_TYPE_INT;
+ dev->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_R].unit = SANE_UNIT_NONE;
+ dev->opt[OPT_GAMMA_VECTOR_R].size = GAMMA_LENGTH * sizeof (SANE_Word);
+ dev->opt[OPT_GAMMA_VECTOR_R].constraint_type = SANE_CONSTRAINT_RANGE;
+ dev->opt[OPT_GAMMA_VECTOR_R].constraint.range = &gamma_range;
+ dev->val[OPT_GAMMA_VECTOR_R].wa = dev->gamma_R;
+
+ /* green gamma vector */
+ dev->opt[OPT_GAMMA_VECTOR_G].name = SANE_NAME_GAMMA_VECTOR_G;
+ dev->opt[OPT_GAMMA_VECTOR_G].title = SANE_TITLE_GAMMA_VECTOR_G;
+ dev->opt[OPT_GAMMA_VECTOR_G].desc = SANE_DESC_GAMMA_VECTOR_G;
+ dev->opt[OPT_GAMMA_VECTOR_G].type = SANE_TYPE_INT;
+ dev->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_G].unit = SANE_UNIT_NONE;
+ dev->opt[OPT_GAMMA_VECTOR_G].size = GAMMA_LENGTH * sizeof (SANE_Word);
+ dev->opt[OPT_GAMMA_VECTOR_G].constraint_type = SANE_CONSTRAINT_RANGE;
+ dev->opt[OPT_GAMMA_VECTOR_G].constraint.range = &gamma_range;
+ dev->val[OPT_GAMMA_VECTOR_G].wa = dev->gamma_G;
+
+ /* blue gamma vector */
+ dev->opt[OPT_GAMMA_VECTOR_B].name = SANE_NAME_GAMMA_VECTOR_B;
+ dev->opt[OPT_GAMMA_VECTOR_B].title = SANE_TITLE_GAMMA_VECTOR_B;
+ dev->opt[OPT_GAMMA_VECTOR_B].desc = SANE_DESC_GAMMA_VECTOR_B;
+ dev->opt[OPT_GAMMA_VECTOR_B].type = SANE_TYPE_INT;
+ dev->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_B].unit = SANE_UNIT_NONE;
+ dev->opt[OPT_GAMMA_VECTOR_B].size = GAMMA_LENGTH * sizeof (SANE_Word);
+ dev->opt[OPT_GAMMA_VECTOR_B].constraint_type = SANE_CONSTRAINT_RANGE;
+ dev->opt[OPT_GAMMA_VECTOR_B].constraint.range = &gamma_range;
+ dev->val[OPT_GAMMA_VECTOR_B].wa = dev->gamma_B;
+
+ /* Threshold */
+ dev->opt[OPT_THRESHOLD].name = SANE_NAME_THRESHOLD;
+ dev->opt[OPT_THRESHOLD].title = SANE_TITLE_THRESHOLD;
+ dev->opt[OPT_THRESHOLD].desc = SANE_DESC_THRESHOLD;
+ dev->opt[OPT_THRESHOLD].type = SANE_TYPE_INT;
+ dev->opt[OPT_THRESHOLD].unit = SANE_UNIT_NONE;
+ dev->opt[OPT_THRESHOLD].size = sizeof (SANE_Int);
+ dev->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_THRESHOLD].constraint_type = SANE_CONSTRAINT_RANGE;
+ dev->opt[OPT_THRESHOLD].constraint.range = &threshold_range;
+ dev->val[OPT_THRESHOLD].w = 128;
+
+ /* Halftone pattern */
+ dev->opt[OPT_HALFTONE_PATTERN].name = SANE_NAME_HALFTONE_PATTERN;
+ dev->opt[OPT_HALFTONE_PATTERN].title = SANE_TITLE_HALFTONE_PATTERN;
+ dev->opt[OPT_HALFTONE_PATTERN].desc = SANE_DESC_HALFTONE_PATTERN;
+ dev->opt[OPT_HALFTONE_PATTERN].type = SANE_TYPE_INT;
+ dev->opt[OPT_HALFTONE_PATTERN].size = sizeof (SANE_Int);
+ dev->opt[OPT_HALFTONE_PATTERN].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_HALFTONE_PATTERN].constraint_type = SANE_CONSTRAINT_RANGE;
+ dev->opt[OPT_HALFTONE_PATTERN].constraint.range = &halftone_range;
+ dev->val[OPT_HALFTONE_PATTERN].w = 1;
+
+ /* preview */
+ dev->opt[OPT_PREVIEW].name = SANE_NAME_PREVIEW;
+ dev->opt[OPT_PREVIEW].title = SANE_TITLE_PREVIEW;
+ dev->opt[OPT_PREVIEW].desc = SANE_DESC_PREVIEW;
+ dev->opt[OPT_PREVIEW].type = SANE_TYPE_BOOL;
+ dev->opt[OPT_PREVIEW].cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+ dev->val[OPT_PREVIEW].w = SANE_FALSE;
+
+ /* Lastly, set the default mode. This might change some values
+ * previously set here. */
+ sane_control_option (dev, OPT_MODE, SANE_ACTION_SET_VALUE,
+ (SANE_String *) COLOR_STR, NULL);
+
+ DBG (DBG_proc, "sceptre_init_options: leave\n");
+}
+
+/* Wait until the scanner is ready.
+ *
+ * The only reason I know the scanner is not ready is because it is
+ * moving the CCD.
+ */
+static SANE_Status
+sceptre_wait_scanner (Sceptre_Scanner * dev)
+{
+ SANE_Status status;
+ int timeout;
+ CDB cdb;
+ size_t size;
+
+ DBG (DBG_proc, "sceptre_wait_scanner: enter\n");
+
+ MKSCSI_TEST_UNIT_READY (cdb);
+ cdb.data[4] = 1; /* returns one byte. Non standard SCSI. */
+
+ /* Set the timeout to 120 seconds. */
+ timeout = 120;
+
+ while (timeout > 0)
+ {
+
+ /* test unit ready */
+ size = 1; /* read one info byte */
+ status =
+ sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len,
+ NULL, 0, dev->buffer, &size);
+
+ if (status != SANE_STATUS_GOOD || size != 1)
+ {
+ DBG (DBG_error, "sceptre_wait_scanner: TUR failed\n");
+ return (SANE_STATUS_IO_ERROR);
+ }
+
+ /* Apparently the scanner returns only 2 values:
+ * 0x00 - ready
+ * 0xff - not ready
+ */
+ if (dev->buffer[0] != 0x00)
+ {
+ sleep (1); /* wait 1 seconds */
+ timeout--;
+ }
+ else
+ {
+ return (SANE_STATUS_GOOD);
+ }
+ };
+
+ DBG (DBG_proc, "sceptre_wait_scanner: scanner not ready\n");
+ return (SANE_STATUS_IO_ERROR);
+}
+
+/* Diagnostic the scanner. */
+static SANE_Status
+sceptre_do_diag (Sceptre_Scanner * dev)
+{
+ SANE_Status status;
+ CDB cdb;
+ size_t size;
+
+ DBG (DBG_proc, "sceptre_receive_diag enter\n");
+
+ /* SEND DIAGNOSTIC. */
+ MKSCSI_SEND_DIAG (cdb, 0);
+
+ /* The windows driver sets that field. This is non standard. */
+ cdb.data[2] = 0x80;
+
+ status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, NULL, 0, NULL, NULL);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sceptre_do_diag: exit, status=%d\n", status);
+ return (status);
+ }
+
+ /* RECEIVE DIAGNOSTIC */
+
+ /* The windows driver ask for 3 byte. This is non standard
+ * SCSI. The page returned should be at least 4 bytes. */
+ size = 3;
+ MKSCSI_RECEIVE_DIAG (cdb, 0, size);
+
+ status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len,
+ NULL, 0, dev->buffer, &size);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sceptre_do_diag: exit, status=%d\n", status);
+ return (status);
+ }
+
+ DBG (DBG_proc, "sceptre_receive_diag exit\n");
+
+ return (status);
+}
+
+/* I'm not sure if the command sent is really set mode. The SCSI
+ * command used is MODE SELECT, but no data is sent. Again, this is
+ * not standard. */
+static SANE_Status
+sceptre_set_mode (Sceptre_Scanner * dev)
+{
+ SANE_Status status;
+ CDB cdb;
+ size_t size;
+
+ DBG (DBG_proc, "sceptre_set_mode: enter\n");
+
+ size = 0x18;
+ MKSCSI_MODE_SELECT (cdb, 1, 0, size);
+
+ status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, NULL, 0, NULL, NULL);
+
+ DBG (DBG_proc, "sceptre_set_mode: exit, status=%d\n", status);
+
+ return (status);
+}
+
+/* Start a scan. */
+static SANE_Status
+sceptre_scan (Sceptre_Scanner * dev)
+{
+ CDB cdb;
+ SANE_Status status;
+
+ DBG (DBG_proc, "sceptre_scan: enter\n");
+
+ MKSCSI_SCAN (cdb);
+
+ status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, NULL, 0, NULL, NULL);
+
+ DBG (DBG_proc, "sceptre_scan: exit, status=%d\n", status);
+
+ return status;
+}
+
+/* Set a window. */
+static SANE_Status
+sceptre_set_window (Sceptre_Scanner * dev)
+{
+ size_t size;
+ CDB cdb;
+ unsigned char window[82];
+ SANE_Status status;
+
+ DBG (DBG_proc, "sceptre_set_window: enter\n");
+
+ size = sizeof (window);
+ MKSCSI_SET_WINDOW (cdb, size);
+
+ memset (window, 0, size);
+
+ /* size of the parameters (74 = 0x4a bytes) */
+ window[7] = sizeof (window) - 8;
+
+ /* X and Y resolution */
+ Ito16 (dev->resolution, &window[10]);
+ Ito16 (dev->resolution, &window[12]);
+
+ /* Upper Left (X,Y) */
+ Ito32 (dev->x_tl, &window[14]);
+ Ito32 (dev->y_tl, &window[18]);
+
+ /* Width and length */
+ Ito32 (dev->width, &window[22]);
+ Ito32 (dev->length, &window[26]);
+
+ /* Image Composition, Halftone and Depth */
+ switch (dev->scan_mode)
+ {
+ case SCEPTRE_LINEART:
+ window[31] = dev->val[OPT_THRESHOLD].w;
+ window[33] = 0;
+ window[34] = 1;
+ window[36] = 0;
+ break;
+ case SCEPTRE_HALFTONE:
+ window[31] = 0x80;
+ window[33] = 0;
+ window[34] = 1;
+ window[36] = dev->val[OPT_HALFTONE_PATTERN].w;
+ break;
+ case SCEPTRE_GRAYSCALE:
+ window[31] = 0x80;
+ window[33] = 2;
+ window[34] = 8;
+ window[36] = 0;
+ break;
+ case SCEPTRE_COLOR:
+ window[31] = 0x80;
+ window[33] = 5;
+ window[34] = 24;
+ window[36] = 0;
+ break;
+ }
+
+ /* Unknown parameters. They look constant in the windows driver. */
+ window[30] = 0x04;
+ window[32] = 0x04;
+ window[37] = 0x80; /* RIF, although it looks unused. */
+
+ hexdump (DBG_info2, "windows", window, sizeof (window));
+
+ status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len,
+ window, sizeof (window), NULL, NULL);
+
+ DBG (DBG_proc, "sceptre_set_window: exit, status=%d\n", status);
+
+ return status;
+}
+
+/* Read the image from the scanner and fill the temporary buffer with it. */
+static SANE_Status
+sceptre_fill_image (Sceptre_Scanner * dev)
+{
+ SANE_Status status;
+ size_t size;
+ CDB cdb;
+ size_t data_left;
+
+ DBG (DBG_proc, "sceptre_fill_image: enter\n");
+
+ assert (dev->image_begin == dev->image_end);
+ assert (dev->real_bytes_left > 0);
+
+ /* Copy the complete lines, plus the imcompletes
+ * ones. We don't keep the real end of data used
+ * in image, so we copy the biggest possible.
+ *
+ * This is a no-op for non color images.
+ */
+ memmove (dev->image, dev->image + dev->image_begin, dev->raster_ahead);
+ dev->image_begin = 0;
+ dev->image_end = 0;
+
+ while (dev->real_bytes_left)
+ {
+
+ if ((status = sceptre_get_status (dev, &data_left)) != SANE_STATUS_GOOD)
+ {
+ return (status);
+ }
+
+ /*
+ * Try to read the maximum number of bytes.
+ */
+ size = data_left;
+ if (size > dev->real_bytes_left)
+ {
+ size = dev->real_bytes_left;
+ }
+ if (size > dev->image_size - dev->raster_ahead - dev->image_end)
+ {
+ size = dev->image_size - dev->raster_ahead - dev->image_end;
+ }
+ if (size > dev->buffer_size)
+ {
+ size = dev->buffer_size;
+ }
+
+ /* Round down to a multiple of line size. */
+ size = size - (size % dev->params.bytes_per_line);
+
+ if (size == 0)
+ {
+ /* Probably reached the end of the buffer.
+ * Check, just in case. */
+ assert (dev->image_end != 0);
+ return (SANE_STATUS_GOOD);
+ }
+
+ DBG (DBG_info, "sceptre_fill_image: to read = %ld bytes (bpl=%d)\n",
+ (long) size, dev->params.bytes_per_line);
+
+ MKSCSI_READ_10 (cdb, 0, 0, size);
+
+ hexdump (DBG_info2, "sceptre_fill_image: READ_10 CDB", cdb.data, 10);
+
+ status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len,
+ NULL, 0, dev->buffer, &size);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "sceptre_fill_image: cannot read from the scanner\n");
+ return status;
+ }
+
+ DBG (DBG_info, "sceptre_fill_image: real bytes left = %ld\n",
+ (long)dev->real_bytes_left);
+
+ switch (dev->scan_mode)
+ {
+ case SCEPTRE_COLOR:
+ sceptre_adjust_raster (dev, size);
+ break;
+ case SCEPTRE_LINEART:
+ case SCEPTRE_HALFTONE:
+ {
+ /* Invert black and white. */
+ unsigned char *src = dev->buffer;
+ unsigned char *dest = dev->image + dev->image_end;
+ size_t i;
+ for (i = 0; i < size; i++)
+ {
+ *dest = *src ^ 0xff;
+ dest++;
+ src++;
+ }
+ dev->image_end += size;
+ }
+ break;
+ default:
+ memcpy (dev->image + dev->image_end, dev->buffer, size);
+ dev->image_end += size;
+ }
+
+ dev->real_bytes_left -= size;
+ }
+
+ return (SANE_STATUS_GOOD); /* unreachable */
+}
+
+/* Copy from the raw buffer to the buffer given by the backend.
+ *
+ * len in input is the maximum length available in buf, and, in
+ * output, is the length written into buf.
+ */
+static void
+sceptre_copy_raw_to_frontend (Sceptre_Scanner * dev, SANE_Byte * buf,
+ size_t * len)
+{
+ size_t size;
+
+ size = dev->image_end - dev->image_begin;
+ if (size > *len)
+ {
+ size = *len;
+ }
+ *len = size;
+
+ memcpy (buf, dev->image + dev->image_begin, size);
+
+ dev->image_begin += size;
+}
+
+/* Stop a scan. */
+static SANE_Status
+do_cancel (Sceptre_Scanner * dev)
+{
+ DBG (DBG_sane_proc, "do_cancel enter\n");
+
+ if (dev->scanning == SANE_TRUE)
+ {
+
+ /* Reposition the CCD. */
+ dev->x_tl = 0;
+ dev->x_tl = 0;
+ dev->width = 0;
+ dev->length = 0;
+ sceptre_set_window (dev);
+ sceptre_scan (dev);
+
+ sceptre_close (dev);
+ }
+
+ dev->scanning = SANE_FALSE;
+
+ DBG (DBG_sane_proc, "do_cancel exit\n");
+
+ return SANE_STATUS_CANCELLED;
+}
+
+/* Start a scan. */
+static const SANE_Word gamma_init[GAMMA_LENGTH] = {
+ 0x00, 0x06, 0x0A, 0x0D, 0x10, 0x13, 0x15, 0x17, 0x19, 0x1B, 0x1D, 0x1F,
+ 0x21, 0x23, 0x25, 0x27,
+ 0x28, 0x2A, 0x2C, 0x2D, 0x2F, 0x30, 0x32, 0x33, 0x35, 0x36, 0x38, 0x39,
+ 0x3A, 0x3C, 0x3D, 0x3F,
+ 0x40, 0x41, 0x43, 0x44, 0x45, 0x46, 0x48, 0x49, 0x4A, 0x4B, 0x4D, 0x4E,
+ 0x4F, 0x50, 0x51, 0x53,
+ 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60,
+ 0x61, 0x62, 0x63, 0x64,
+ 0x65, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71,
+ 0x72, 0x73, 0x74, 0x75,
+ 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7D, 0x7E, 0x7F, 0x80,
+ 0x81, 0x82, 0x83, 0x84,
+ 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
+ 0x90, 0x91, 0x92, 0x92,
+ 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x99, 0x9A, 0x9B, 0x9C, 0x9D,
+ 0x9E, 0x9F, 0x9F, 0xA0,
+ 0xA1, 0xA2, 0xA3, 0xA4, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xA9, 0xAA,
+ 0xAB, 0xAC, 0xAD, 0xAD,
+ 0xAE, 0xAF, 0xB0, 0xB1, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB5, 0xB6, 0xB7,
+ 0xB8, 0xB9, 0xB9, 0xBA,
+ 0xBB, 0xBC, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0, 0xC0, 0xC1, 0xC2, 0xC3, 0xC3,
+ 0xC4, 0xC5, 0xC6, 0xC6,
+ 0xC7, 0xC8, 0xC9, 0xC9, 0xCA, 0xCB, 0xCC, 0xCC, 0xCD, 0xCE, 0xCF, 0xCF,
+ 0xD0, 0xD1, 0xD2, 0xD2,
+ 0xD3, 0xD4, 0xD5, 0xD5, 0xD6, 0xD7, 0xD7, 0xD8, 0xD9, 0xDA, 0xDA, 0xDB,
+ 0xDC, 0xDC, 0xDD, 0xDE,
+ 0xDF, 0xDF, 0xE0, 0xE1, 0xE1, 0xE2, 0xE3, 0xE4, 0xE4, 0xE5, 0xE6, 0xE6,
+ 0xE7, 0xE8, 0xE8, 0xE9,
+ 0xEA, 0xEB, 0xEB, 0xEC, 0xED, 0xED, 0xEE, 0xEF, 0xEF, 0xF0, 0xF1, 0xF1,
+ 0xF2, 0xF3, 0xF4, 0xF4,
+ 0xF5, 0xF6, 0xF6, 0xF7, 0xF8, 0xF8, 0xF9, 0xFA, 0xFA, 0xFB, 0xFC, 0xFC,
+ 0xFD, 0xFE, 0xFE, 0xFF
+};
+
+static SANE_Status
+sceptre_send_gamma (Sceptre_Scanner * dev)
+{
+ CDB cdb;
+ int i;
+ struct
+ {
+ unsigned char gamma_R[GAMMA_LENGTH];
+ unsigned char gamma_G[GAMMA_LENGTH];
+ unsigned char gamma_B[GAMMA_LENGTH];
+ }
+ param;
+ size_t size;
+ SANE_Status status;
+
+ DBG (DBG_proc, "sceptre_send_gamma: enter\n");
+
+ size = sizeof (param);
+
+ assert (size == 0x300);
+
+ MKSCSI_SEND_10 (cdb, 0x03, 0x02, size);
+
+ if (dev->val[OPT_CUSTOM_GAMMA].w)
+ {
+ /* Use the custom gamma. */
+ for (i = 0; i < GAMMA_LENGTH; i++)
+ {
+ param.gamma_R[i] = dev->gamma_R[i];
+ param.gamma_G[i] = dev->gamma_G[i];
+ param.gamma_B[i] = dev->gamma_B[i];
+ }
+ }
+ else
+ {
+ for (i = 0; i < GAMMA_LENGTH; i++)
+ {
+ param.gamma_R[i] = gamma_init[i];
+ param.gamma_G[i] = gamma_init[i];
+ param.gamma_B[i] = gamma_init[i];
+ }
+ }
+
+ hexdump (DBG_info2, "gamma", param.gamma_R, 3 * GAMMA_LENGTH);
+
+ status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len,
+ &param, sizeof (param), NULL, NULL);
+
+ DBG (DBG_proc, "sceptre_send_gamma: exit, status=%d\n", status);
+
+ return (status);
+}
+
+/*--------------------------------------------------------------------------*/
+
+/* Entry points */
+
+SANE_Status
+sane_init (SANE_Int * version_code, SANE_Auth_Callback __sane_unused__ authorize)
+{
+ FILE *fp;
+ char dev_name[PATH_MAX];
+ size_t len;
+
+ DBG_INIT ();
+
+ DBG (DBG_proc, "sane_init: enter\n");
+
+ DBG (DBG_error, "This is sane-sceptre version %d.%d-%d\n", SANE_CURRENT_MAJOR,
+ V_MINOR, BUILD);
+ DBG (DBG_error, "(C) 2002 by Frank Zago\n");
+
+ if (version_code)
+ {
+ *version_code = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, V_MINOR, BUILD);
+ }
+
+ fp = sanei_config_open (SCEPTRE_CONFIG_FILE);
+ if (!fp)
+ {
+ /* default to /dev/scanner instead of insisting on config file */
+ attach_scanner ("/dev/scanner", 0);
+ return SANE_STATUS_GOOD;
+ }
+
+ while (sanei_config_read (dev_name, sizeof (dev_name), fp))
+ {
+ if (dev_name[0] == '#') /* ignore line comments */
+ continue;
+ len = strlen (dev_name);
+
+ if (!len)
+ continue; /* ignore empty lines */
+
+ sanei_config_attach_matching_devices (dev_name, attach_one);
+ }
+
+ fclose (fp);
+
+ DBG (DBG_proc, "sane_init: leave\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_get_devices (const SANE_Device *** device_list, SANE_Bool __sane_unused__ local_only)
+{
+ Sceptre_Scanner *dev;
+ int i;
+
+ DBG (DBG_proc, "sane_get_devices: enter\n");
+
+ if (devlist)
+ free (devlist);
+
+ devlist = malloc ((num_devices + 1) * sizeof (devlist[0]));
+ if (!devlist)
+ return SANE_STATUS_NO_MEM;
+
+ i = 0;
+ for (dev = first_dev; i < num_devices; dev = dev->next)
+ devlist[i++] = &dev->sane;
+ devlist[i++] = 0;
+
+ *device_list = devlist;
+
+ DBG (DBG_proc, "sane_get_devices: exit\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_open (SANE_String_Const devicename, SANE_Handle * handle)
+{
+ Sceptre_Scanner *dev;
+ SANE_Status status;
+
+ DBG (DBG_proc, "sane_open: enter\n");
+
+ /* search for devicename */
+ if (devicename[0])
+ {
+ DBG (DBG_info, "sane_open: devicename=%s\n", devicename);
+
+ for (dev = first_dev; dev; dev = dev->next)
+ {
+ if (strcmp (dev->sane.name, devicename) == 0)
+ {
+ break;
+ }
+ }
+
+ if (!dev)
+ {
+ status = attach_scanner (devicename, &dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ return status;
+ }
+ }
+ }
+ else
+ {
+ DBG (DBG_sane_info, "sane_open: no devicename, opening first device\n");
+ dev = first_dev; /* empty devicename -> use first device */
+ }
+
+ if (!dev)
+ {
+ DBG (DBG_error, "No scanner found\n");
+
+ return SANE_STATUS_INVAL;
+ }
+
+ sceptre_init_options (dev);
+
+ /* Initialize the gamma table. */
+ memcpy (dev->gamma_R, gamma_init, dev->opt[OPT_GAMMA_VECTOR_R].size);
+ memcpy (dev->gamma_G, gamma_init, dev->opt[OPT_GAMMA_VECTOR_G].size);
+ memcpy (dev->gamma_B, gamma_init, dev->opt[OPT_GAMMA_VECTOR_B].size);
+
+ *handle = dev;
+
+ DBG (DBG_proc, "sane_open: exit\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+const SANE_Option_Descriptor *
+sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
+{
+ Sceptre_Scanner *dev = handle;
+
+ DBG (DBG_proc, "sane_get_option_descriptor: enter, option %d\n", option);
+
+ if ((unsigned) option >= OPT_NUM_OPTIONS)
+ {
+ return NULL;
+ }
+
+ DBG (DBG_proc, "sane_get_option_descriptor: exit\n");
+
+ return dev->opt + option;
+}
+
+SANE_Status
+sane_control_option (SANE_Handle handle, SANE_Int option,
+ SANE_Action action, void *val, SANE_Int * info)
+{
+ Sceptre_Scanner *dev = handle;
+ SANE_Status status;
+ SANE_Word cap;
+
+ DBG (DBG_proc, "sane_control_option: enter, option %d, action %d\n",
+ option, action);
+
+ if (info)
+ {
+ *info = 0;
+ }
+
+ if (dev->scanning)
+ {
+ return SANE_STATUS_DEVICE_BUSY;
+ }
+
+ if (option < 0 || option >= OPT_NUM_OPTIONS)
+ {
+ return SANE_STATUS_INVAL;
+ }
+
+ cap = dev->opt[option].cap;
+ if (!SANE_OPTION_IS_ACTIVE (cap))
+ {
+ return SANE_STATUS_INVAL;
+ }
+
+ if (action == SANE_ACTION_GET_VALUE)
+ {
+
+ switch (option)
+ {
+ /* word options */
+ case OPT_NUM_OPTS:
+ case OPT_RESOLUTION:
+ case OPT_TL_X:
+ case OPT_TL_Y:
+ case OPT_BR_X:
+ case OPT_BR_Y:
+ case OPT_THRESHOLD:
+ case OPT_CUSTOM_GAMMA:
+ case OPT_HALFTONE_PATTERN:
+ case OPT_PREVIEW:
+
+ *(SANE_Word *) val = dev->val[option].w;
+ return SANE_STATUS_GOOD;
+
+ /* string options */
+ case OPT_MODE:
+ strcpy (val, dev->val[option].s);
+ return SANE_STATUS_GOOD;
+
+ case OPT_GAMMA_VECTOR_R:
+ case OPT_GAMMA_VECTOR_G:
+ case OPT_GAMMA_VECTOR_B:
+ memcpy (val, dev->val[option].wa, dev->opt[option].size);
+ return SANE_STATUS_GOOD;
+
+ default:
+ return SANE_STATUS_INVAL;
+ }
+ }
+ else if (action == SANE_ACTION_SET_VALUE)
+ {
+
+ if (!SANE_OPTION_IS_SETTABLE (cap))
+ {
+ DBG (DBG_error, "could not set option, not settable\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ status = sanei_constrain_value (dev->opt + option, val, info);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "could not set option, invalid value\n");
+ return status;
+ }
+
+ switch (option)
+ {
+
+ /* Side-effect options */
+ case OPT_TL_X:
+ case OPT_TL_Y:
+ case OPT_BR_X:
+ case OPT_BR_Y:
+ case OPT_RESOLUTION:
+ if (info)
+ {
+ *info |= SANE_INFO_RELOAD_PARAMS;
+ }
+ dev->val[option].w = *(SANE_Word *) val;
+ return SANE_STATUS_GOOD;
+
+ /* Side-effect free options */
+ case OPT_THRESHOLD:
+ case OPT_HALFTONE_PATTERN:
+ case OPT_PREVIEW:
+ dev->val[option].w = *(SANE_Word *) val;
+ return SANE_STATUS_GOOD;
+
+ case OPT_MODE:
+ free (dev->val[OPT_MODE].s);
+ dev->val[OPT_MODE].s = (SANE_Char *) strdup (val);
+
+ /* Set default options for the scan modes. */
+ dev->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_HALFTONE_PATTERN].cap |= SANE_CAP_INACTIVE;
+
+ if (strcmp (dev->val[OPT_MODE].s, LINEART_STR) == 0)
+ {
+ dev->scan_mode = SCEPTRE_LINEART;
+ dev->opt[OPT_THRESHOLD].cap &= ~SANE_CAP_INACTIVE;
+ }
+ else if (strcmp (dev->val[OPT_MODE].s, HALFTONE_STR) == 0)
+ {
+ dev->scan_mode = SCEPTRE_HALFTONE;
+ dev->opt[OPT_HALFTONE_PATTERN].cap &= ~SANE_CAP_INACTIVE;
+ }
+ else if (strcmp (dev->val[OPT_MODE].s, GRAY_STR) == 0)
+ {
+ dev->scan_mode = SCEPTRE_GRAYSCALE;
+ }
+ else if (strcmp (dev->val[OPT_MODE].s, COLOR_STR) == 0)
+ {
+ dev->scan_mode = SCEPTRE_COLOR;
+ dev->opt[OPT_CUSTOM_GAMMA].cap &= ~SANE_CAP_INACTIVE;
+ if (dev->val[OPT_CUSTOM_GAMMA].w)
+ {
+ dev->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE;
+ }
+ }
+
+ if (info)
+ {
+ *info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
+ }
+ return SANE_STATUS_GOOD;
+
+ case OPT_GAMMA_VECTOR_R:
+ case OPT_GAMMA_VECTOR_G:
+ case OPT_GAMMA_VECTOR_B:
+ memcpy (dev->val[option].wa, val, dev->opt[option].size);
+ return SANE_STATUS_GOOD;
+
+ case OPT_CUSTOM_GAMMA:
+ dev->val[OPT_CUSTOM_GAMMA].w = *(SANE_Word *) val;
+ if (dev->val[OPT_CUSTOM_GAMMA].w)
+ {
+ /* use custom_gamma_table */
+ dev->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE;
+ }
+ else
+ {
+ dev->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
+ dev->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
+ }
+ if (info)
+ {
+ *info |= SANE_INFO_RELOAD_OPTIONS;
+ }
+ return SANE_STATUS_GOOD;
+
+ default:
+ return SANE_STATUS_INVAL;
+ }
+ }
+
+ DBG (DBG_proc, "sane_control_option: exit, bad\n");
+
+ return SANE_STATUS_UNSUPPORTED;
+}
+
+SANE_Status
+sane_get_parameters (SANE_Handle handle, SANE_Parameters * params)
+{
+ Sceptre_Scanner *dev = handle;
+ int x_dpi; /* X-Resolution */
+
+ DBG (DBG_proc, "sane_get_parameters: enter\n");
+
+ if (!(dev->scanning))
+ {
+ /* Prepare the parameters for the caller. */
+ memset (&dev->params, 0, sizeof (SANE_Parameters));
+
+ if (dev->val[OPT_PREVIEW].w == SANE_TRUE)
+ {
+ dev->resolution = 30; /* Windows TWAIN does 32 */
+ dev->x_tl = 0;
+ dev->y_tl = 0;
+ dev->x_br = mmToIlu (SANE_UNFIX (dev->x_range.max));
+ dev->y_br = mmToIlu (SANE_UNFIX (dev->y_range.max));
+ }
+ else
+ {
+ /* Setup the parameters for the scan. These values will be re-used
+ * in the SET WINDOWS command. */
+ dev->resolution = dev->val[OPT_RESOLUTION].w;
+
+ dev->x_tl = mmToIlu (SANE_UNFIX (dev->val[OPT_TL_X].w));
+ dev->y_tl = mmToIlu (SANE_UNFIX (dev->val[OPT_TL_Y].w));
+ dev->x_br = mmToIlu (SANE_UNFIX (dev->val[OPT_BR_X].w));
+ dev->y_br = mmToIlu (SANE_UNFIX (dev->val[OPT_BR_Y].w));
+ }
+
+ /* Check the corners are OK. */
+ if (dev->x_tl > dev->x_br)
+ {
+ int s;
+ s = dev->x_tl;
+ dev->x_tl = dev->x_br;
+ dev->x_br = s;
+ }
+ if (dev->y_tl > dev->y_br)
+ {
+ int s;
+ s = dev->y_tl;
+ dev->y_tl = dev->y_br;
+ dev->y_br = s;
+ }
+
+ dev->width = dev->x_br - dev->x_tl;
+ dev->length = dev->y_br - dev->y_tl;
+
+ /*
+ * Adjust the "X Resolution". The sceptre S1200 ignores the
+ * Y-Resolution parameter in the windows block. X-Resolution
+ * is used instead. However the limits are not the same for X
+ * (600 dpi) and Y (1200 dpi).
+ */
+ x_dpi = dev->resolution;
+ if (x_dpi > 600)
+ {
+ x_dpi = 600;
+ }
+
+ /* Set depth */
+ switch (dev->scan_mode)
+ {
+ case SCEPTRE_LINEART:
+ dev->params.format = SANE_FRAME_GRAY;
+ dev->depth = 1;
+ break;
+ case SCEPTRE_HALFTONE:
+ dev->params.format = SANE_FRAME_GRAY;
+ dev->depth = 1;
+ break;
+ case SCEPTRE_GRAYSCALE:
+ dev->params.format = SANE_FRAME_GRAY;
+ dev->depth = 8;
+ break;
+ case SCEPTRE_COLOR:
+ dev->params.format = SANE_FRAME_RGB;
+ dev->depth = 8;
+ break;
+ }
+
+ /* this scanner does only one pass */
+ dev->params.last_frame = SANE_TRUE;
+ dev->params.depth = dev->depth;
+
+ /* Compute the number of pixels, bytes per lines and lines. */
+ switch (dev->scan_mode)
+ {
+ case SCEPTRE_LINEART:
+ case SCEPTRE_HALFTONE:
+ dev->params.pixels_per_line = (dev->width * x_dpi) / 600;
+ dev->params.pixels_per_line &= ~0x7; /* round down to 8 */
+
+ dev->params.bytes_per_line = (dev->params.pixels_per_line) / 8;
+
+ dev->params.lines = ((dev->length * dev->resolution) / 600);
+ if ((dev->params.lines) * 600 != (dev->length * dev->resolution))
+ {
+ /* Round up lines to 2. */
+ dev->params.lines &= ~1;
+ dev->params.lines += 2;
+ }
+
+ break;
+
+ case SCEPTRE_GRAYSCALE:
+ case SCEPTRE_COLOR:
+ /* pixels_per_line rounding rules:
+ * 2n + [0.0 .. 1.0] -> round to 2n
+ * 2n + ]1.0 .. 2.0] -> round to 2n + 2
+ */
+ dev->params.pixels_per_line = (dev->width * x_dpi) / 600;
+ if (dev->params.pixels_per_line & 1)
+ {
+ if ((dev->params.pixels_per_line * 600) == (dev->width * x_dpi))
+ {
+ /* 2n */
+ dev->params.pixels_per_line--;
+ }
+ else
+ {
+ /* 2n+2 */
+ dev->params.pixels_per_line++;
+ }
+ }
+
+ dev->params.bytes_per_line = dev->params.pixels_per_line;
+ if (dev->scan_mode == SCEPTRE_COLOR)
+ dev->params.bytes_per_line *= 3;
+
+ /* lines number rounding rules:
+ * 2n + [0.0 .. 2.0[ -> round to 2n
+ *
+ * Note: the rounding is often incorrect at high
+ * resolution (ag more than 300dpi)
+ */
+ dev->params.lines = (dev->length * dev->resolution) / 600;
+ dev->params.lines &= ~1;
+
+ break;
+ }
+
+ /* Find the proper color shifting parameter. */
+ if (dev->scan_mode == SCEPTRE_COLOR)
+ {
+ int i = 1;
+ while (resolutions_list[i] != dev->resolution)
+ {
+ i++;
+ }
+ dev->color_shift = color_shift_list[i];
+ }
+ else
+ {
+ dev->color_shift = 0;
+ }
+
+ DBG (DBG_proc, "color_shift = %d\n", dev->color_shift);
+
+ dev->bytes_left = dev->params.lines * dev->params.bytes_per_line;
+ }
+
+ /* Return the current values. */
+ if (params)
+ {
+ *params = (dev->params);
+ }
+
+ DBG (DBG_proc, "sane_get_parameters: exit\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_start (SANE_Handle handle)
+{
+ Sceptre_Scanner *dev = handle;
+ SANE_Status status;
+
+ DBG (DBG_proc, "sane_start: enter\n");
+
+ if (!(dev->scanning))
+ {
+
+ sane_get_parameters (dev, NULL);
+
+ if (dev->image)
+ {
+ free (dev->image);
+ }
+ /* Compute the length necessary in image. The first part will store
+ * the complete lines, and the rest is used to stored ahead
+ * rasters.
+ */
+ dev->raster_ahead =
+ (2 * dev->color_shift + 1) * dev->params.bytes_per_line;
+ dev->image_size = dev->buffer_size + dev->raster_ahead;
+ dev->image = malloc (dev->image_size);
+ if (dev->image == NULL)
+ {
+ return SANE_STATUS_NO_MEM;
+ }
+ dev->image_begin = 0;
+ dev->image_end = 0;
+
+ dev->raster_size = dev->params.bytes_per_line / 3;
+ dev->raster_num = 0;
+ dev->raster_real = 0;
+ dev->line = 0;
+
+ /* Open again the scanner. */
+ if (sanei_scsi_open
+ (dev->devicename, &(dev->sfd), sceptre_sense_handler, dev) != 0)
+ {
+ DBG (DBG_error, "ERROR: sane_start: open failed\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ /* The scanner must be ready. */
+ status = sceptre_wait_scanner (dev);
+ if (status)
+ {
+ sceptre_close (dev);
+ return status;
+ }
+
+ status = sceptre_do_diag (dev);
+ if (status)
+ {
+ sceptre_close (dev);
+ return status;
+ }
+
+ status = sceptre_set_mode (dev);
+ if (status)
+ {
+ sceptre_close (dev);
+ return status;
+ }
+
+ status = sceptre_set_window (dev);
+ if (status)
+ {
+ sceptre_close (dev);
+ return status;
+ }
+
+ status = sceptre_send_gamma (dev);
+ if (status)
+ {
+ sceptre_close (dev);
+ return status;
+ }
+
+ status = sceptre_scan (dev);
+ if (status)
+ {
+ sceptre_close (dev);
+ return status;
+ }
+
+ status = sceptre_get_status (dev, &dev->real_bytes_left);
+ if (status)
+ {
+ sceptre_close (dev);
+ return status;
+ }
+
+ }
+
+ dev->bytes_left = dev->params.bytes_per_line * dev->params.lines;
+
+ dev->scanning = SANE_TRUE;
+
+ DBG (DBG_proc, "sane_start: exit\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_read (SANE_Handle handle, SANE_Byte * buf, SANE_Int max_len,
+ SANE_Int * len)
+{
+ SANE_Status status;
+ Sceptre_Scanner *dev = handle;
+ size_t size;
+ int buf_offset; /* offset into buf */
+
+ DBG (DBG_proc, "sane_read: enter\n");
+
+ *len = 0;
+
+ if (!(dev->scanning))
+ {
+ /* OOPS, not scanning */
+ return do_cancel (dev);
+ }
+
+ if (dev->bytes_left <= 0)
+ {
+ return (SANE_STATUS_EOF);
+ }
+
+ buf_offset = 0;
+
+ do
+ {
+ if (dev->image_begin == dev->image_end)
+ {
+ /* Fill image */
+ status = sceptre_fill_image (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ return (status);
+ }
+ }
+
+ /* Something must have been read */
+ if (dev->image_begin == dev->image_end)
+ {
+ DBG (DBG_info, "sane_read: nothing read\n");
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ /* Copy the data to the frontend buffer. */
+ size = max_len - buf_offset;
+ if (size > dev->bytes_left)
+ {
+ size = dev->bytes_left;
+ }
+ sceptre_copy_raw_to_frontend (dev, buf + buf_offset, &size);
+
+ buf_offset += size;
+
+ dev->bytes_left -= size;
+ *len += size;
+
+ }
+ while ((buf_offset != max_len) && dev->bytes_left);
+
+ DBG (DBG_info, "sane_read: leave, bytes_left=%ld\n", (long)dev->bytes_left);
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_set_io_mode (SANE_Handle __sane_unused__ handle, SANE_Bool __sane_unused__ non_blocking)
+{
+ SANE_Status status;
+ Sceptre_Scanner *dev = handle;
+
+ DBG (DBG_proc, "sane_set_io_mode: enter\n");
+
+ if (dev->scanning == SANE_FALSE)
+ {
+ return (SANE_STATUS_INVAL);
+ }
+
+ if (non_blocking == SANE_FALSE)
+ {
+ status = SANE_STATUS_GOOD;
+ }
+ else
+ {
+ status = SANE_STATUS_UNSUPPORTED;
+ }
+
+ DBG (DBG_proc, "sane_set_io_mode: exit\n");
+
+ return status;
+}
+
+SANE_Status
+sane_get_select_fd (SANE_Handle __sane_unused__ handle, SANE_Int __sane_unused__ * fd)
+{
+ DBG (DBG_proc, "sane_get_select_fd: enter\n");
+
+ DBG (DBG_proc, "sane_get_select_fd: exit\n");
+
+ return SANE_STATUS_UNSUPPORTED;
+}
+
+void
+sane_cancel (SANE_Handle handle)
+{
+ Sceptre_Scanner *dev = handle;
+
+ DBG (DBG_proc, "sane_cancel: enter\n");
+
+ do_cancel (dev);
+
+ DBG (DBG_proc, "sane_cancel: exit\n");
+}
+
+void
+sane_close (SANE_Handle handle)
+{
+ Sceptre_Scanner *dev = handle;
+ Sceptre_Scanner *dev_tmp;
+
+ DBG (DBG_proc, "sane_close: enter\n");
+
+ do_cancel (dev);
+ sceptre_close (dev);
+
+ /* Unlink dev. */
+ if (first_dev == dev)
+ {
+ first_dev = dev->next;
+ }
+ else
+ {
+ dev_tmp = first_dev;
+ while (dev_tmp->next && dev_tmp->next != dev)
+ {
+ dev_tmp = dev_tmp->next;
+ }
+ if (dev_tmp->next != NULL)
+ {
+ dev_tmp->next = dev_tmp->next->next;
+ }
+ }
+
+ sceptre_free (dev);
+ num_devices--;
+
+ DBG (DBG_proc, "sane_close: exit\n");
+}
+
+void
+sane_exit (void)
+{
+ DBG (DBG_proc, "sane_exit: enter\n");
+
+ while (first_dev)
+ {
+ sane_close (first_dev);
+ }
+
+ if (devlist)
+ {
+ free (devlist);
+ devlist = NULL;
+ }
+
+ DBG (DBG_proc, "sane_exit: exit\n");
+}