Initial import of sane-backends version 1.0.24-1.2

1 files changed, 2690 insertions, 0 deletions

diff --git a/backend/apple.c b/backend/apple.c
new file mode 100644
index 0000000..c806983
--- /dev/null
+++ b/backend/apple.c
@@ -0,0 +1,2690 @@
+/* sane - Scanner Access Now Easy.
+
+   Copyright (C) 1998 Milon Firikis based on David Mosberger-Tang previous
+   Work on mustek.c file from the SANE package.
+
+   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 implements a SANE backend for Apple flatbed scanners.  */
+
+#include "../include/sane/config.h"
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include "../include/_stdint.h"
+
+#include "../include/sane/sane.h"
+#include "../include/sane/sanei.h"
+#include "../include/sane/saneopts.h"
+#include "../include/sane/sanei_scsi.h"
+
+
+/* SCSI commands that the Apple scanners understand: */
+#define APPLE_SCSI_TEST_UNIT_READY	0x00
+#define APPLE_SCSI_REQUEST_SENSE	0x03
+#define APPLE_SCSI_INQUIRY		0x12
+#define APPLE_SCSI_MODE_SELECT		0x15
+#define APPLE_SCSI_RESERVE		0x16
+#define APPLE_SCSI_RELEASE		0x17
+#define APPLE_SCSI_START		0x1b
+#define APPLE_SCSI_AREA_AND_WINDOWS	0x24
+#define APPLE_SCSI_READ_SCANNED_DATA	0x28
+#define APPLE_SCSI_GET_DATA_STATUS	0x34
+
+
+#define INQ_LEN	0x60
+
+#define ENABLE(OPTION)  s->opt[OPTION].cap &= ~SANE_CAP_INACTIVE
+#define DISABLE(OPTION) s->opt[OPTION].cap |=  SANE_CAP_INACTIVE
+#define IS_ACTIVE(OPTION) (((s->opt[OPTION].cap) & SANE_CAP_INACTIVE) == 0)
+
+#define XQSTEP(XRES,BPP) (SANE_Int) (((double) (8*1200)) / ((double) (XRES*BPP)))
+#define YQSTEP(YRES) (SANE_Int) (((double) (1200)) / ((double) (YRES)))
+
+
+/* Very low info, Apple Scanners only */
+
+/* TODO: Ok I admit it. I am not so clever to do this operations with bitwised
+   operators. Sorry. */
+
+#define STORE8(p,v)				\
+  {						\
+  *(p)=(v);					\
+  }
+
+#define STORE16(p,v)				\
+  {						\
+  *(p)=(v)/256;					\
+  *(p+1)=(v-*(p)*256);				\
+  }
+
+#define STORE24(p,v)				\
+  {						\
+  *(p)=(v)/65536;				\
+  *(p+1)=(v-*(p)*65536)/256;			\
+  *(p+2)=(v-*(p)*65536-*(p+1)*256);		\
+  }
+
+
+#define STORE32(p,v)				\
+  {						\
+  *(p)=(v)/16777216;				\
+  *(p+1)=(v-*(p)*16777216)/65536;		\
+  *(p+2)=(v-*(p)*16777216-*(p+1)*65536)/256;	\
+  *(p+3)=(v-*(p)*16777216-*(p+1)*65536-*(p+2)*256);\
+  }
+
+#define READ24(p) *(p)*65536 + *(p+1)*256 + *(p+2)
+
+#include "../include/sane/sanei_backend.h"
+
+#ifndef PATH_MAX
+# define PATH_MAX	1024
+#endif
+
+#include "../include/sane/sanei_config.h"
+#define APPLE_CONFIG_FILE "apple.conf"
+
+#include "apple.h"
+
+
+static int num_devices;
+static Apple_Device *first_dev;
+static Apple_Scanner *first_handle;
+
+
+static SANE_String_Const mode_list[6];
+
+static SANE_String_Const SupportedModel[] =
+{
+"3",
+"AppleScanner 4bit, 16 Shades of Gray",
+"OneScanner 8bit, 256 Shades of Gray",
+"ColorOneScanner, RGB color 8bit per band",
+NULL
+};
+
+static const SANE_String_Const graymap_list[] =
+{
+  "dark", "normal", "light",
+  0
+};
+
+#if 0
+static const SANE_Int resbit4_list[] =
+{
+  5,
+  75, 100, 150, 200, 300
+};
+
+static const SANE_Int resbit1_list[] =
+{
+  17,
+  75, 90, 100, 120, 135, 150, 165, 180, 195,
+  200, 210, 225, 240, 255, 270, 285, 300
+};
+#endif
+
+static const SANE_Int resbit_list[] =
+{
+  5,
+  75, 100, 150, 200, 300
+};
+
+static const SANE_String_Const speed_list[] =
+{
+  "normal", "high", "high wo H/S",
+  0
+};
+
+static SANE_String_Const halftone_pattern_list[6];
+
+static const SANE_String_Const color_sensor_list[] =
+{
+  "All", "Red", "Green", "Blue",
+  0
+};
+
+/* NOTE: This is used for Brightness, Contrast, Threshold, AutoBackAdj
+   and 0 is the default value */
+static const SANE_Range byte_range =
+{
+  1, 255, 1
+};
+
+static const SANE_Range u8_range =
+{
+  0,				/* minimum */
+  255,				/* maximum */
+  0				/* quantization */
+};
+
+
+/* NOTE: However I can select from different lists during the hardware
+   probing time. */
+
+
+
+
+static const uint8_t inquiry[] =
+{
+  APPLE_SCSI_INQUIRY, 0x00, 0x00, 0x00, INQ_LEN, 0x00
+};
+
+static const uint8_t test_unit_ready[] =
+{
+  APPLE_SCSI_TEST_UNIT_READY, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+
+#if 0
+SANE_Int 
+xqstep (unsigned int Xres, unsigned int bpp)
+{
+  return (SANE_Int) ((double) (8 * 1200)) / ((double) (Xres * bpp));
+}
+
+
+SANE_Int 
+yqstep (unsigned int Yres, unsigned int bpp)
+{
+  return (SANE_Int) ((double) (1200)) / ((double) (Yres));
+}
+#endif
+
+
+
+/* The functions below return the quantized value of x,y in scanners dots
+   aka 1/1200 of an inch */
+
+static SANE_Int 
+xquant (double x, unsigned int Xres, unsigned int bpp, int dir)
+{
+  double tmp;
+  unsigned int t;
+
+  tmp = (double) x *Xres * bpp / (double) 8;
+  t = (unsigned int) tmp;
+
+  if (tmp - ((double) t) >= 0.1)
+    if (dir)
+      t++;;
+
+  return t * 8 * 1200 / (Xres * bpp);
+}
+
+
+
+static SANE_Int 
+yquant (double y, unsigned int Yres, int dir)
+{
+  double tmp;
+  unsigned int t;
+
+  tmp = (double) y *Yres;
+  t = (unsigned int) tmp;
+
+  if (tmp - ((double) t) >= 0.1)
+    if (dir)
+      t++;;
+
+  return t * 1200 / Yres;
+}
+
+static SANE_Status
+wait_ready (int fd)
+{
+#define MAX_WAITING_TIME	60	/* one minute, at most */
+  struct timeval now, start;
+  SANE_Status status;
+
+#ifdef NEUTRALIZE_BACKEND
+return SANE_STATUS_GOOD;
+#else
+
+  gettimeofday (&start, 0);
+
+  while (1)
+    {
+      DBG (USER_MESSAGE, "wait_ready: sending TEST_UNIT_READY\n");
+
+      status = sanei_scsi_cmd (fd, test_unit_ready, sizeof (test_unit_ready),
+			       0, 0);
+      switch (status)
+	{
+	default:
+	  /* Ignore errors while waiting for scanner to become ready.
+	     Some SCSI drivers return EIO while the scanner is
+	     returning to the home position.  */
+	  DBG (ERROR_MESSAGE, "wait_ready: test unit ready failed (%s)\n",
+	       sane_strstatus (status));
+	  /* fall through */
+	case SANE_STATUS_DEVICE_BUSY:
+	  gettimeofday (&now, 0);
+	  if (now.tv_sec - start.tv_sec >= MAX_WAITING_TIME)
+	    {
+	      DBG (ERROR_MESSAGE, "wait_ready: timed out after %lu seconds\n",
+		   (u_long) now.tv_sec - start.tv_sec);
+	      return SANE_STATUS_INVAL;
+	    }
+	  usleep (100000);	/* retry after 100ms */
+	  break;
+
+	case SANE_STATUS_GOOD:
+	  return status;
+	}
+    }
+  return SANE_STATUS_INVAL;
+#endif /* NEUTRALIZE_BACKEND */
+}
+
+static SANE_Status
+sense_handler (int scsi_fd, u_char * result, void *arg)
+{
+  scsi_fd = scsi_fd;			/* silence gcc */
+  arg = arg;					/* silence gcc */
+
+  switch (result[2] & 0x0F)
+    {
+    case 0:
+      DBG (USER_MESSAGE, "Sense: No sense Error\n");
+      return SANE_STATUS_GOOD;
+    case 2:
+      DBG (ERROR_MESSAGE, "Sense: Scanner not ready\n");
+      return SANE_STATUS_DEVICE_BUSY;
+    case 4:
+      DBG (ERROR_MESSAGE, "Sense: Hardware Error. Read more...\n");
+      return SANE_STATUS_IO_ERROR;
+    case 5:
+      DBG (ERROR_MESSAGE, "Sense: Illegall request\n");
+      return SANE_STATUS_UNSUPPORTED;
+    case 6:
+      DBG (ERROR_MESSAGE, "Sense: Unit Attention (Wait until scanner "
+	   "boots)\n");
+      return SANE_STATUS_DEVICE_BUSY;
+    case 9:
+      DBG (ERROR_MESSAGE, "Sense: Vendor Unique. Read more...\n");
+      return SANE_STATUS_IO_ERROR;
+    default:
+      DBG (ERROR_MESSAGE, "Sense: Unknown Sense Key. Read more...\n");
+      return SANE_STATUS_IO_ERROR;
+    }
+
+  return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+request_sense (Apple_Scanner * s)
+{
+  uint8_t cmd[6];
+  uint8_t result[22];
+  size_t size = sizeof (result);
+  SANE_Status status;
+
+  memset (cmd, 0, sizeof (cmd));
+  memset (result, 0, sizeof (result));
+
+#ifdef NEUTRALIZE_BACKEND
+return SANE_STATUS_GOOD;
+#else
+
+  cmd[0] = APPLE_SCSI_REQUEST_SENSE;
+  STORE8 (cmd + 4, sizeof (result));
+  sanei_scsi_cmd (s->fd, cmd, sizeof (cmd), result, &size);
+
+  if (result[7] != 14)
+    {
+      DBG (ERROR_MESSAGE, "Additional Length %u\n", (unsigned int) result[7]);
+      status = SANE_STATUS_IO_ERROR;
+    }
+
+
+  status = sense_handler (s->fd, result, NULL);
+  if (status == SANE_STATUS_IO_ERROR)
+    {
+
+/* Now we are checking for Harware and Vendor Unique Errors for all models */
+/* First check the common Error conditions */
+
+      if (result[18] & 0x80)
+	DBG (ERROR_MESSAGE, "Sense: Dim Light (output of lamp below 70%%).\n");
+
+      if (result[18] & 0x40)
+	DBG (ERROR_MESSAGE, "Sense: No Light at all.\n");
+
+      if (result[18] & 0x20)
+	DBG (ERROR_MESSAGE, "Sense: No Home.\n");
+
+      if (result[18] & 0x10)
+	DBG (ERROR_MESSAGE, "Sense: No Limit. Tried to scan out of range.\n");
+
+
+      switch (s->hw->ScannerModel)
+	{
+	case APPLESCANNER:
+	  if (result[18] & 0x08)
+	    DBG (ERROR_MESSAGE, "Sense: Shade Error. Failed Calibration.\n");
+	  if (result[18] & 0x04)
+	    DBG (ERROR_MESSAGE, "Sense: ROM Error.\n");
+	  if (result[18] & 0x02)
+	    DBG (ERROR_MESSAGE, "Sense: RAM Error.\n");
+	  if (result[18] & 0x01)
+	    DBG (ERROR_MESSAGE, "Sense: CPU Error.\n");
+	  if (result[19] & 0x80)
+	    DBG (ERROR_MESSAGE, "Sense: DIPP Error.\n");
+	  if (result[19] & 0x40)
+	    DBG (ERROR_MESSAGE, "Sense: DMA Error.\n");
+	  if (result[19] & 0x20)
+	    DBG (ERROR_MESSAGE, "Sense: GA1 Error.\n");
+	  break;
+	case ONESCANNER:
+	  if (result[18] & 0x08)
+	    DBG (ERROR_MESSAGE, "Sense: CCD clock generator failed.\n");
+	  if (result[18] & 0x04)
+	    DBG (ERROR_MESSAGE, "Sense: LRAM (Line RAM) Error.\n");
+	  if (result[18] & 0x02)
+	    DBG (ERROR_MESSAGE, "Sense: CRAM (Correction RAM) Error.\n");
+	  if (result[18] & 0x01)
+	    DBG (ERROR_MESSAGE, "Sense: ROM Error.\n");
+	  if (result[19] & 0x08)
+	    DBG (ERROR_MESSAGE, "Sense: SRAM Error.\n");
+	  if (result[19] & 0x04)
+	    DBG (ERROR_MESSAGE, "Sense: CPU Error.\n");
+	  break;
+	case COLORONESCANNER:
+	  if (result[18] & 0x08)
+	    DBG (ERROR_MESSAGE, "Sense: Calibration cirquit cannot "
+		 "support normal shading.\n");
+	  if (result[18] & 0x04)
+	    DBG (ERROR_MESSAGE, "Sense: PSRAM (Correction RAM) Error.\n");
+	  if (result[18] & 0x02)
+	    DBG (ERROR_MESSAGE, "Sense: SRAM Error.\n");
+	  if (result[18] & 0x01)
+	    DBG (ERROR_MESSAGE, "Sense: ROM Error.\n");
+	  if (result[19] & 0x10)
+	    DBG (ERROR_MESSAGE, "Sense: ICP (CPU) Error.\n");
+	  if (result[19] & 0x02)
+	    DBG (ERROR_MESSAGE, "Sense: Over light. (Too bright lamp ?).\n");
+	  break;
+	default:
+	  DBG (ERROR_MESSAGE,
+	       "Sense: Unselected Scanner model. Please report this.\n");
+	  break;
+	}
+    }
+
+  DBG (USER_MESSAGE, "Sense: Optical gain %u.\n", (unsigned int) result[20]);
+  return status;
+#endif /* NEUTRALIZE_BACKEND */
+}
+
+
+
+
+
+static SANE_Status
+attach (const char *devname, Apple_Device ** devp, int may_wait)
+{
+  char result[INQ_LEN];
+  const char *model_name = result + 44;
+  int fd, apple_scanner, fw_revision;
+  Apple_Device *dev;
+  SANE_Status status;
+  size_t size;
+
+  for (dev = first_dev; dev; dev = dev->next)
+    if (strcmp (dev->sane.name, devname) == 0)
+      {
+	if (devp)
+	  *devp = dev;
+	return SANE_STATUS_GOOD;
+      }
+
+  DBG (USER_MESSAGE, "attach: opening %s\n", devname);
+
+#ifdef NEUTRALIZE_BACKEND
+result[0]=0x06;
+strcpy(result +  8, "APPLE   ");
+
+if (APPLE_MODEL_SELECT==APPLESCANNER)
+  strcpy(result + 16, "SCANNER A9M0337 ");
+if (APPLE_MODEL_SELECT==ONESCANNER)
+  strcpy(result + 16, "SCANNER II      ");
+if (APPLE_MODEL_SELECT==COLORONESCANNER)
+  strcpy(result + 16, "SCANNER III     ");
+
+#else
+  status = sanei_scsi_open (devname, &fd, sense_handler, 0);
+  if (status != SANE_STATUS_GOOD)
+    {
+      DBG (ERROR_MESSAGE, "attach: open failed (%s)\n",
+	   sane_strstatus (status));
+      return SANE_STATUS_INVAL;
+    }
+
+  if (may_wait)
+    wait_ready (fd);
+
+  DBG (USER_MESSAGE, "attach: sending INQUIRY\n");
+  size = sizeof (result);
+  status = sanei_scsi_cmd (fd, inquiry, sizeof (inquiry), result, &size);
+  if (status != SANE_STATUS_GOOD)
+    {
+      DBG (ERROR_MESSAGE, "attach: inquiry failed (%s)\n",
+	   sane_strstatus (status));
+      sanei_scsi_close (fd);
+      return status;
+    }
+
+  status = wait_ready (fd);
+  sanei_scsi_close (fd);
+  if (status != SANE_STATUS_GOOD)
+    return status;
+#endif /* NEUTRALIZE_BACKEND */
+
+  /* check for old format: */
+  apple_scanner = (strncmp (result + 8, "APPLE   ", 8) == 0);
+  model_name = result + 16;
+
+  apple_scanner = apple_scanner && (result[0] == 0x06);
+
+  if (!apple_scanner)
+    {
+      DBG (ERROR_MESSAGE, "attach: device doesn't look like an Apple scanner"
+	   "(result[0]=%#02x)\n", result[0]);
+      return SANE_STATUS_INVAL;
+    }
+
+  /* get firmware revision as BCD number: */
+  fw_revision =
+    (result[32] - '0') << 8 | (result[34] - '0') << 4 | (result[35] - '0');
+  DBG (USER_MESSAGE, "attach: firmware revision %d.%02x\n",
+       fw_revision >> 8, fw_revision & 0xff);
+
+  dev = malloc (sizeof (*dev));
+  if (!dev)
+    return SANE_STATUS_NO_MEM;
+
+  memset (dev, 0, sizeof (*dev));
+
+  dev->sane.name = strdup (devname);
+  dev->sane.vendor = "Apple";
+  dev->sane.model = strndup (model_name, 16);
+  dev->sane.type = "flatbed scanner";
+
+  dev->x_range.min = 0;
+  dev->x_range.max = SANE_FIX (8.51 * MM_PER_INCH);
+  dev->x_range.quant = 0;
+
+  dev->y_range.min = 0;
+  dev->y_range.max = SANE_FIX (14.0 * MM_PER_INCH);
+  dev->y_range.quant = 0;
+
+  dev->MaxHeight = 16800;
+
+  if (strncmp (model_name, "SCANNER A9M0337 ", 16) == 0)
+    {
+      dev->ScannerModel = APPLESCANNER;
+      dev->dpi_range.min = SANE_FIX (75);
+      dev->dpi_range.max = SANE_FIX (300);
+      dev->dpi_range.quant = SANE_FIX (1);
+      dev->MaxWidth = 10208;
+    }
+  else if (strncmp (model_name, "SCANNER II      ", 16) == 0)
+    {
+      dev->ScannerModel = ONESCANNER;
+      dev->dpi_range.min = SANE_FIX (72);
+      dev->dpi_range.max = SANE_FIX (300);
+      dev->dpi_range.quant = SANE_FIX (1);
+      dev->MaxWidth = 10200;
+    }
+  else if (strncmp (model_name, "SCANNER III     ", 16) == 0)
+    {
+      dev->ScannerModel = COLORONESCANNER;
+      dev->dpi_range.min = SANE_FIX (72);
+      dev->dpi_range.max = SANE_FIX (300);
+      dev->dpi_range.quant = SANE_FIX (1);
+      dev->MaxWidth = 10200;
+    }
+  else
+    {
+      DBG (ERROR_MESSAGE,
+	   "attach: Cannot found Apple scanner in the neighborhood\n");
+      free (dev);
+      return SANE_STATUS_INVAL;
+    }
+
+  DBG (USER_MESSAGE, "attach: found Apple scanner model %s (%s)\n",
+       dev->sane.model, dev->sane.type);
+
+  ++num_devices;
+  dev->next = first_dev;
+  first_dev = dev;
+
+  if (devp)
+    *devp = dev;
+  return SANE_STATUS_GOOD;
+}
+
+static size_t
+max_string_size (const SANE_String_Const strings[])
+{
+  size_t size, max_size = 0;
+  int i;
+
+  for (i = 0; strings[i]; ++i)
+    {
+      size = strlen (strings[i]) + 1;
+      if (size > max_size)
+	max_size = size;
+    }
+  return max_size;
+}
+
+
+static SANE_Status
+scan_area_and_windows (Apple_Scanner * s)
+{
+  uint8_t cmd[10 + 8 + 42];
+#define CMD cmd + 0
+#define WH  cmd + 10
+#define WP  WH + 8
+
+#ifdef NEUTRALIZE_BACKEND
+return SANE_STATUS_GOOD;
+#else
+
+  /* setup SCSI command (except length): */
+  memset (cmd, 0, sizeof (cmd));
+  cmd[0] = APPLE_SCSI_AREA_AND_WINDOWS;
+
+
+  if (s->hw->ScannerModel == COLORONESCANNER)
+    {
+      STORE24 (CMD + 6, 50);
+      STORE16 (WH + 6, 42);
+    }
+  else
+    {
+      STORE24 (CMD + 6, 48);
+      STORE16 (WH + 6, 40);
+    }
+
+/* Store resolution. First X, the Y */
+
+  STORE16 (WP + 2, s->val[OPT_RESOLUTION].w);
+  STORE16 (WP + 4, s->val[OPT_RESOLUTION].w);
+
+/* Now the Scanner Window in Scanner Parameters */
+
+  STORE32 (WP + 6, s->ULx);
+  STORE32 (WP + 10, s->ULy);
+  STORE32 (WP + 14, s->Width);
+  STORE32 (WP + 18, s->Height);
+
+/* Now The Enhansment Group */
+
+  STORE8 (WP + 22, s->val[OPT_BRIGHTNESS].w);
+  STORE8 (WP + 23, s->val[OPT_THRESHOLD].w);
+  STORE8 (WP + 24, s->val[OPT_CONTRAST].w);
+
+/* The Mode */
+
+  if      (!strcmp (s->val[OPT_MODE].s, SANE_VALUE_SCAN_MODE_LINEART))
+    STORE8 (WP + 25, 0)
+  else if (!strcmp (s->val[OPT_MODE].s, SANE_VALUE_SCAN_MODE_HALFTONE))
+    STORE8 (WP + 25, 1)
+  else if (!strcmp (s->val[OPT_MODE].s, SANE_VALUE_SCAN_MODE_GRAY) ||
+	   !strcmp (s->val[OPT_MODE].s, "Gray16"))
+    STORE8 (WP + 25, 2)
+  else if (!strcmp (s->val[OPT_MODE].s, "BiColor"))
+    STORE8 (WP + 25, 3)
+  else if (!strcmp (s->val[OPT_MODE].s, SANE_VALUE_SCAN_MODE_COLOR))
+    STORE8 (WP + 25, 5)
+  else
+    {
+      DBG (ERROR_MESSAGE, "Cannot much mode %s\n", s->val[OPT_MODE].s);
+      return SANE_STATUS_INVAL;
+    }
+
+  STORE8 (WP + 26, s->bpp)
+
+/* HalfTone */
+if (s->hw->ScannerModel != COLORONESCANNER)
+  {
+  if	  (!strcmp (s->val[OPT_HALFTONE_PATTERN].s, "spiral4x4"))
+    STORE16 (WP + 27, 0)
+  else if (!strcmp (s->val[OPT_HALFTONE_PATTERN].s, "bayer4x4"))
+    STORE16 (WP + 27, 1)
+  else if (!strcmp (s->val[OPT_HALFTONE_PATTERN].s, "download"))
+    STORE16 (WP + 27, 1)
+  else if (!strcmp (s->val[OPT_HALFTONE_PATTERN].s, "spiral8x8"))
+    STORE16 (WP + 27, 3)
+  else if (!strcmp (s->val[OPT_HALFTONE_PATTERN].s, "bayer8x8"))
+    STORE16 (WP + 27, 4)
+  else
+    {
+      DBG (ERROR_MESSAGE, "Cannot much haftone pattern %s\n",
+					s->val[OPT_HALFTONE_PATTERN].s);
+      return SANE_STATUS_INVAL;
+    }
+  }
+/* Padding Type */
+  STORE8 (WP + 29, 3);
+
+  if (s->hw->ScannerModel == COLORONESCANNER)
+    {
+    if (s->val[OPT_VOLT_REF].w)
+      {
+      STORE8(WP+40,s->val[OPT_VOLT_REF_TOP].w);
+      STORE8(WP+41,s->val[OPT_VOLT_REF_BOTTOM].w);
+      }
+    else
+      {
+      STORE8(WP+40,0);
+      STORE8(WP+41,0);
+      }
+    return sanei_scsi_cmd (s->fd, cmd, sizeof (cmd), 0, 0);
+    }
+  else
+    return sanei_scsi_cmd (s->fd, cmd, sizeof (cmd) - 2, 0, 0);
+
+#endif /* NEUTRALIZE_BACKEND */
+}
+
+static SANE_Status
+mode_select (Apple_Scanner * s)
+{
+  uint8_t cmd[6 + 12];
+#define CMD cmd + 0
+#define PP  cmd + 6
+
+  /* setup SCSI command (except length): */
+  memset (cmd, 0, sizeof (cmd));
+  cmd[0] = APPLE_SCSI_MODE_SELECT;
+
+/* Apple Hardware Magic */
+  STORE8 (CMD + 1, 0x10);
+
+/* Parameter list length */
+  STORE8 (CMD + 4, 12);
+
+  STORE8 (PP + 5, 6);
+
+  if (s->val[OPT_LAMP].w) *(PP+8) |= 1;
+
+  switch (s->hw->ScannerModel)
+    {
+    case APPLESCANNER:
+      if      (!strcmp (s->val[OPT_GRAYMAP].s, "dark"))
+	STORE8 (PP + 6, 0)
+      else if (!strcmp (s->val[OPT_GRAYMAP].s, "normal"))
+	STORE8 (PP + 6, 1)
+      else if (!strcmp (s->val[OPT_GRAYMAP].s, "light"))
+	STORE8 (PP + 6, 2)
+      else
+	{
+	DBG (ERROR_MESSAGE, "Cannot mach GrayMap Function %s\n",
+						s->val[OPT_GRAYMAP].s);
+	return SANE_STATUS_INVAL;
+	}
+				/* And the auto background threshold */
+      STORE8 (PP + 7, s->val[OPT_AUTOBACKGROUND_THRESHOLD].w)
+      break;
+    case ONESCANNER:
+      if (s->val[OPT_LED].w) *(PP+7) |= 4;
+      if (s->val[OPT_CCD].w) *(PP+8) |= 2;
+      if      (!strcmp (s->val[OPT_SPEED].s, "high"))
+	*(PP+8) |= 4;
+      else if (!strcmp (s->val[OPT_SPEED].s, "high wo H/S"))
+	*(PP+8) |= 8;
+      else if (!strcmp (s->val[OPT_SPEED].s, "normal"))
+	{ /* Do nothing. Zeros are great */}
+      else
+	{
+	DBG (ERROR_MESSAGE, "Cannot mach speed selection %s\n",
+						s->val[OPT_SPEED].s);
+	return SANE_STATUS_INVAL;
+	}
+      break;
+    case COLORONESCANNER:
+      if (s->val[OPT_LED].w)		*(PP+7) |= 4;
+      if (!s->val[OPT_CUSTOM_GAMMA].w)	*(PP+7) |= 2;
+      if (!s->val[OPT_CUSTOM_CCT].w)	*(PP+7) |= 1;
+      if (s->val[OPT_MTF_CIRCUIT].w)	*(PP+8) |= 16;
+      if (s->val[OPT_ICP].w)		*(PP+8) |= 8;
+      if (s->val[OPT_POLARITY].w)	*(PP+8) |= 4;
+      if (s->val[OPT_CCD].w)		*(PP+8) |= 2;
+
+      if      (!strcmp (s->val[OPT_COLOR_SENSOR].s, "All"))
+	STORE8 (PP + 9, 0)
+      else if (!strcmp (s->val[OPT_COLOR_SENSOR].s, "Red"))
+	STORE8 (PP + 9, 1)
+      else if (!strcmp (s->val[OPT_COLOR_SENSOR].s, "Green"))
+	STORE8 (PP + 9, 2)
+      else if (!strcmp (s->val[OPT_COLOR_SENSOR].s, "Blue"))
+	STORE8 (PP + 9, 3)
+      else
+	{
+	DBG (ERROR_MESSAGE, "Cannot mach Color Sensor for gray scans %s\n",
+						s->val[OPT_COLOR_SENSOR].s);
+	return SANE_STATUS_INVAL;
+	}
+
+      break;
+    default:
+      DBG(ERROR_MESSAGE,"Bad Scanner.\n");
+      break;
+    }
+
+#ifdef NEUTRALIZE_BACKEND
+  return SANE_STATUS_GOOD;
+#else
+  return sanei_scsi_cmd (s->fd, cmd, sizeof (cmd), 0, 0);
+#endif /* NEUTRALIZE_BACKEND */
+
+}
+
+static SANE_Status
+start_scan (Apple_Scanner * s)
+{
+  SANE_Status status;
+  uint8_t start[7];
+
+
+  memset (start, 0, sizeof (start));
+  start[0] = APPLE_SCSI_START;
+  start[4] = 1;
+
+  switch (s->hw->ScannerModel)
+    {
+    case APPLESCANNER:
+      if (s->val[OPT_WAIT].w)  start[5]=0x80;
+      /* NOT TODO  NoHome */
+      break;
+    case ONESCANNER:
+      if (!s->val[OPT_CALIBRATE].w)  start[5]=0x20;
+      break;
+    case COLORONESCANNER:
+      break;
+    default:
+      DBG(ERROR_MESSAGE,"Bad Scanner.\n");
+      break;
+    }
+
+
+#ifdef NEUTRALIZE_BACKEND
+  return SANE_STATUS_GOOD;
+#else
+  status = sanei_scsi_cmd (s->fd, start, sizeof (start), 0, 0);
+  return status;
+#endif /* NEUTRALIZE_BACKEND */
+}
+
+static SANE_Status
+calc_parameters (Apple_Scanner * s)
+{
+  SANE_String val = s->val[OPT_MODE].s;
+  SANE_Status status = SANE_STATUS_GOOD;
+  SANE_Bool OutOfRangeX, OutOfRangeY, Protect = SANE_TRUE;
+  SANE_Int xqstep, yqstep;
+
+  DBG (FLOW_CONTROL, "Entering calc_parameters\n");
+
+  if (!strcmp (val, SANE_VALUE_SCAN_MODE_LINEART))
+    {
+      s->params.last_frame = SANE_TRUE;
+      s->params.format = SANE_FRAME_GRAY;
+      s->params.depth = 1;
+      s->bpp = 1;
+    }
+  else if (!strcmp (val, SANE_VALUE_SCAN_MODE_HALFTONE))
+    {
+      s->params.last_frame = SANE_TRUE;
+      s->params.format = SANE_FRAME_GRAY;
+      s->params.depth = 1;
+      s->bpp = 1;
+    }
+  else if (!strcmp (val, "Gray16"))
+    {
+      s->params.last_frame = SANE_TRUE;
+      s->params.format = SANE_FRAME_GRAY;
+      s->params.depth = 8;
+      s->bpp = 4;
+    }
+  else if (!strcmp (val, SANE_VALUE_SCAN_MODE_GRAY))
+    {
+      s->params.last_frame = SANE_TRUE;
+      s->params.format = SANE_FRAME_GRAY;
+      s->params.depth = 8;
+      s->bpp = 8;
+    }
+  else if (!strcmp (val, "BiColor"))
+    {
+      s->params.last_frame = SANE_TRUE;
+      s->params.format = SANE_FRAME_RGB;
+      s->params.depth = 24;
+      s->bpp = 3;
+    }
+  else if (!strcmp (val, SANE_VALUE_SCAN_MODE_COLOR))
+    {
+      s->params.last_frame = SANE_FALSE;
+      s->params.format = SANE_FRAME_RED;
+      s->params.depth = 24;
+      s->bpp = 24;
+    }
+  else
+    {
+      DBG (ERROR_MESSAGE, "calc_parameters: Invalid mode %s\n", (char *) val);
+      status = SANE_STATUS_INVAL;
+    }
+
+  s->ulx = SANE_UNFIX (s->val[OPT_TL_X].w) / MM_PER_INCH;
+  s->uly = SANE_UNFIX (s->val[OPT_TL_Y].w) / MM_PER_INCH;
+  s->wx = SANE_UNFIX (s->val[OPT_BR_X].w) / MM_PER_INCH - s->ulx;
+  s->wy = SANE_UNFIX (s->val[OPT_BR_Y].w) / MM_PER_INCH - s->uly;
+
+  DBG (VARIABLE_CONTROL, "Desired [%g,%g] to +[%g,%g]\n",
+       s->ulx, s->uly, s->wx, s->wy);
+
+  xqstep = XQSTEP (s->val[OPT_RESOLUTION].w, s->bpp);
+  yqstep = YQSTEP (s->val[OPT_RESOLUTION].w);
+
+  DBG (VARIABLE_CONTROL, "Quantization steps of [%u,%u].\n", xqstep, yqstep);
+
+  s->ULx = xquant (s->ulx, s->val[OPT_RESOLUTION].w, s->bpp, 0);
+  s->Width = xquant (s->wx, s->val[OPT_RESOLUTION].w, s->bpp, 1);
+  s->ULy = yquant (s->uly, s->val[OPT_RESOLUTION].w, 0);
+  s->Height = yquant (s->wy, s->val[OPT_RESOLUTION].w, 1);
+
+  DBG (VARIABLE_CONTROL, "Scanner [%u,%u] to +[%u,%u]\n",
+       s->ULx, s->ULy, s->Width, s->Height);
+
+  do
+    {
+
+      OutOfRangeX = SANE_FALSE;
+      OutOfRangeY = SANE_FALSE;
+
+      if (s->ULx + s->Width > s->hw->MaxWidth)
+	{
+	  OutOfRangeX = SANE_TRUE;
+	  Protect = SANE_FALSE;
+	  s->Width -= xqstep;
+	}
+
+      if (s->ULy + s->Height > s->hw->MaxHeight)
+	{
+	  OutOfRangeY = SANE_TRUE;
+	  Protect = SANE_FALSE;
+	  s->Height -= yqstep;
+	}
+
+      DBG (VARIABLE_CONTROL, "Adapting to [%u,%u] to +[%u,%u]\n",
+	   s->ULx, s->ULy, s->Width, s->Height);
+
+    }
+  while (OutOfRangeX || OutOfRangeY);
+
+  s->ulx = (double) s->ULx / 1200;
+  s->uly = (double) s->ULy / 1200;
+  s->wx = (double) s->Width / 1200;
+  s->wy = (double) s->Height / 1200;
+
+
+  DBG (VARIABLE_CONTROL, "Real [%g,%g] to +[%g,%g]\n",
+       s->ulx, s->uly, s->wx, s->wy);
+
+
+/* 
+
+   TODO: Remove this ugly hack (Protect). Read to learn why!
+
+   NOTE: I hate the Fixed Sane type. This type gave me a terrible
+   headache and a difficult bug to find out. The xscanimage frontend
+   was looping and segfaulting all the time with random order. The
+   problem was the following:
+
+   * You select new let's say BR_X
+   * sane_control_option returns info inexact (always for BR_X) but
+     does not modify val because it fits under the constrained
+     quantization.
+
+   Hm... Well sane_control doesn't change the (double) value of val
+   but the Fixed interpatation may have been change (by 1 or something
+   small).
+
+   So now we should protect the val if the change is smaller than the
+   quantization step or better under the SANE_[UN]FIX accuracy.
+
+   Looks like for two distinct val (Fixed) values we get the same
+   double. How come ?
+
+   This hack fixed the looping situtation. Unfortunately SIGSEGV
+   remains when you touch the slice bars (thouhg not all the
+   time). But it's OK if you select scan_area from the preview window
+   (cool).
+
+ */
+
+  if (!Protect)
+    {
+      s->val[OPT_TL_X].w = SANE_FIX (s->ulx * MM_PER_INCH);
+      s->val[OPT_TL_Y].w = SANE_FIX (s->uly * MM_PER_INCH);
+      s->val[OPT_BR_X].w = SANE_FIX ((s->ulx + s->wx) * MM_PER_INCH);
+      s->val[OPT_BR_Y].w = SANE_FIX ((s->uly + s->wy) * MM_PER_INCH);
+    }
+  else
+    DBG (VARIABLE_CONTROL, "Not adapted. Protecting\n");
+
+
+  DBG (VARIABLE_CONTROL, "GUI [%g,%g] to [%g,%g]\n",
+       SANE_UNFIX (s->val[OPT_TL_X].w),
+       SANE_UNFIX (s->val[OPT_TL_Y].w),
+       SANE_UNFIX (s->val[OPT_BR_X].w),
+       SANE_UNFIX (s->val[OPT_BR_Y].w));
+
+  /* NOTE: remember that AppleScanners quantize the scan area to be a
+     byte multiple */
+
+
+  s->params.pixels_per_line = s->Width * s->val[OPT_RESOLUTION].w / 1200;
+  s->params.lines = s->Height * s->val[OPT_RESOLUTION].w / 1200;
+  s->params.bytes_per_line = s->params.pixels_per_line * s->params.depth / 8;
+
+
+  DBG (VARIABLE_CONTROL, "format=%d\n", s->params.format);
+  DBG (VARIABLE_CONTROL, "last_frame=%d\n", s->params.last_frame);
+  DBG (VARIABLE_CONTROL, "lines=%d\n", s->params.lines);
+  DBG (VARIABLE_CONTROL, "depth=%d (%d)\n", s->params.depth, s->bpp);
+  DBG (VARIABLE_CONTROL, "pixels_per_line=%d\n", s->params.pixels_per_line);
+  DBG (VARIABLE_CONTROL, "bytes_per_line=%d\n", s->params.bytes_per_line);
+  DBG (VARIABLE_CONTROL, "Pixels %dx%dx%d\n",
+       s->params.pixels_per_line, s->params.lines, 1 << s->params.depth);
+
+  DBG (FLOW_CONTROL, "Leaving calc_parameters\n");
+  return status;
+}
+
+
+
+static SANE_Status
+gamma_update(SANE_Handle handle)
+{
+Apple_Scanner *s = handle;
+
+
+if (s->hw->ScannerModel == COLORONESCANNER)
+  {
+  if (	!strcmp(s->val[OPT_MODE].s,SANE_VALUE_SCAN_MODE_GRAY)	||
+	!strcmp(s->val[OPT_MODE].s,"Gray16")	 )
+    {
+    ENABLE (OPT_CUSTOM_GAMMA);
+    if (s->val[OPT_CUSTOM_GAMMA].w)
+      {
+      ENABLE (OPT_DOWNLOAD_GAMMA);
+      if (! strcmp(s->val[OPT_COLOR_SENSOR].s,"All"))
+	{
+	ENABLE (OPT_GAMMA_VECTOR_R);
+	ENABLE (OPT_GAMMA_VECTOR_G);
+	ENABLE (OPT_GAMMA_VECTOR_B);
+	}
+      if (! strcmp(s->val[OPT_COLOR_SENSOR].s,"Red"))
+	{
+	ENABLE (OPT_GAMMA_VECTOR_R);
+	DISABLE(OPT_GAMMA_VECTOR_G);
+	DISABLE (OPT_GAMMA_VECTOR_B);
+	}
+      if (! strcmp(s->val[OPT_COLOR_SENSOR].s,"Green"))
+	{
+	DISABLE (OPT_GAMMA_VECTOR_R);
+	ENABLE (OPT_GAMMA_VECTOR_G);
+	DISABLE (OPT_GAMMA_VECTOR_B);
+	}
+      if (! strcmp(s->val[OPT_COLOR_SENSOR].s,"Blue"))
+	{
+	DISABLE (OPT_GAMMA_VECTOR_R);
+	DISABLE (OPT_GAMMA_VECTOR_G);
+	ENABLE (OPT_GAMMA_VECTOR_B);
+	}
+      }
+    else /* Not custom gamma */
+      {
+      goto discustom;
+      }
+    }
+  else if (!strcmp(s->val[OPT_MODE].s,SANE_VALUE_SCAN_MODE_COLOR))
+    {
+    ENABLE (OPT_CUSTOM_GAMMA);
+    if (s->val[OPT_CUSTOM_GAMMA].w)
+      {
+      ENABLE (OPT_DOWNLOAD_GAMMA);
+      ENABLE (OPT_GAMMA_VECTOR_R);
+      ENABLE (OPT_GAMMA_VECTOR_G);
+      ENABLE (OPT_GAMMA_VECTOR_B);
+      }
+    else /* Not custom gamma */
+      {
+      goto discustom;
+      }
+    }
+  else /* Not Gamma capable mode */
+    {
+    goto disall;
+    }
+  }	/* Not Gamma capable Scanner */
+else
+  {
+disall:
+  DISABLE (OPT_CUSTOM_GAMMA);
+discustom:
+  DISABLE (OPT_GAMMA_VECTOR_R);
+  DISABLE (OPT_GAMMA_VECTOR_G);
+  DISABLE (OPT_GAMMA_VECTOR_B);
+  DISABLE (OPT_DOWNLOAD_GAMMA);
+  }
+
+return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+mode_update (SANE_Handle handle, char *val)
+{
+  Apple_Scanner *s = handle;
+  SANE_Bool cct=SANE_FALSE;
+  SANE_Bool UseThreshold=SANE_FALSE;
+
+  DISABLE(OPT_COLOR_SENSOR);
+
+  if (!strcmp (val, SANE_VALUE_SCAN_MODE_LINEART))
+    {
+      if (s->hw->ScannerModel == APPLESCANNER)
+	ENABLE (OPT_AUTOBACKGROUND);
+      else
+	DISABLE (OPT_AUTOBACKGROUND);
+      DISABLE (OPT_HALFTONE_PATTERN);
+
+      UseThreshold=SANE_TRUE;
+    }
+  else if (!strcmp (val, SANE_VALUE_SCAN_MODE_HALFTONE))
+    {
+      DISABLE (OPT_AUTOBACKGROUND);
+      ENABLE (OPT_HALFTONE_PATTERN);
+    }
+  else if (!strcmp (val, "Gray16") || !strcmp (val, SANE_VALUE_SCAN_MODE_GRAY))
+    {
+      DISABLE (OPT_AUTOBACKGROUND);
+      DISABLE (OPT_HALFTONE_PATTERN);
+      if (s->hw->ScannerModel == COLORONESCANNER)
+	ENABLE(OPT_COLOR_SENSOR);
+        
+    }				/* End of Gray */
+  else if (!strcmp (val, "BiColor"))
+    {
+      DISABLE (OPT_AUTOBACKGROUND);
+      DISABLE (OPT_HALFTONE_PATTERN);
+      UseThreshold=SANE_TRUE;
+    }
+  else if (!strcmp (val, SANE_VALUE_SCAN_MODE_COLOR))
+    {
+      DISABLE (OPT_AUTOBACKGROUND);
+      DISABLE (OPT_HALFTONE_PATTERN);
+      cct=SANE_TRUE;
+    }
+  else
+    {
+      DBG (ERROR_MESSAGE, "Invalid mode %s\n", (char *) val);
+      return SANE_STATUS_INVAL;
+    }
+
+/* Second hand dependancies of mode option */
+/* Looks like code doubling */
+
+
+  if (UseThreshold)
+    {
+      DISABLE (OPT_BRIGHTNESS);
+      DISABLE (OPT_CONTRAST);
+      DISABLE (OPT_VOLT_REF);
+      DISABLE (OPT_VOLT_REF_TOP);
+      DISABLE (OPT_VOLT_REF_BOTTOM);
+
+     if (IS_ACTIVE (OPT_AUTOBACKGROUND) && s->val[OPT_AUTOBACKGROUND].w)
+      {
+      DISABLE (OPT_THRESHOLD);
+      ENABLE (OPT_AUTOBACKGROUND_THRESHOLD);
+      }
+    else
+      {
+      ENABLE (OPT_THRESHOLD);
+      DISABLE (OPT_AUTOBACKGROUND_THRESHOLD);
+      }
+    }
+  else
+    {
+      DISABLE (OPT_THRESHOLD);
+      DISABLE (OPT_AUTOBACKGROUND_THRESHOLD);
+      
+      if (s->hw->ScannerModel == COLORONESCANNER)
+	{
+	ENABLE (OPT_VOLT_REF);
+	if (s->val[OPT_VOLT_REF].w)
+	  {
+	  ENABLE (OPT_VOLT_REF_TOP);
+	  ENABLE (OPT_VOLT_REF_BOTTOM);
+	  DISABLE (OPT_BRIGHTNESS);
+	  DISABLE (OPT_CONTRAST);
+	  }
+	else
+	  {
+	  DISABLE (OPT_VOLT_REF_TOP);
+	  DISABLE (OPT_VOLT_REF_BOTTOM);
+	  ENABLE (OPT_BRIGHTNESS);
+	  ENABLE (OPT_CONTRAST);
+	  }
+	}
+      else
+        {
+	ENABLE (OPT_BRIGHTNESS);
+	ENABLE (OPT_CONTRAST);
+        }
+    }
+
+
+  if (IS_ACTIVE (OPT_HALFTONE_PATTERN) &&
+      !strcmp (s->val[OPT_HALFTONE_PATTERN].s, "download"))
+    ENABLE (OPT_HALFTONE_FILE);
+  else
+    DISABLE (OPT_HALFTONE_FILE);
+
+  if (cct)
+    ENABLE (OPT_CUSTOM_CCT);
+  else
+    DISABLE (OPT_CUSTOM_CCT);
+
+  if (cct && s->val[OPT_CUSTOM_CCT].w)
+    {
+    ENABLE(OPT_CCT);
+    ENABLE(OPT_DOWNLOAD_CCT);
+    }
+  else
+    {
+    DISABLE(OPT_CCT);
+    DISABLE(OPT_DOWNLOAD_CCT);
+    }
+
+
+  gamma_update (s);
+  calc_parameters (s);
+
+  return SANE_STATUS_GOOD;
+
+}
+
+
+
+
+static SANE_Status
+init_options (Apple_Scanner * s)
+{
+  int i;
+
+  memset (s->opt, 0, sizeof (s->opt));
+  memset (s->val, 0, sizeof (s->val));
+
+  for (i = 0; i < NUM_OPTIONS; ++i)
+    {
+      s->opt[i].size = sizeof (SANE_Word);
+      s->opt[i].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT;
+    }
+
+  s->opt[OPT_NUM_OPTS].title = SANE_TITLE_NUM_OPTIONS;
+  s->opt[OPT_NUM_OPTS].desc = SANE_DESC_NUM_OPTIONS;
+  s->opt[OPT_NUM_OPTS].type = SANE_TYPE_INT;
+  s->opt[OPT_NUM_OPTS].cap = SANE_CAP_SOFT_DETECT;
+  s->val[OPT_NUM_OPTS].w = NUM_OPTIONS;
+
+  /* Hardware detect Information  group: */
+
+  s->opt[OPT_HWDETECT_GROUP].title = "Hardware";
+  s->opt[OPT_HWDETECT_GROUP].desc = "Detected during hardware probing";
+  s->opt[OPT_HWDETECT_GROUP].type = SANE_TYPE_GROUP;
+  s->opt[OPT_HWDETECT_GROUP].cap = 0;
+  s->opt[OPT_HWDETECT_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+        
+  s->opt[OPT_MODEL].name = "model";
+  s->opt[OPT_MODEL].title = "Model";
+  s->opt[OPT_MODEL].desc = "Model and capabilities";
+  s->opt[OPT_MODEL].type = SANE_TYPE_STRING;
+  s->opt[OPT_MODEL].cap = SANE_CAP_SOFT_DETECT;
+  s->opt[OPT_MODEL].constraint_type = SANE_CONSTRAINT_NONE;
+  s->opt[OPT_MODEL].size = max_string_size (SupportedModel);
+  s->val[OPT_MODEL].s = strdup (SupportedModel[s->hw->ScannerModel]);
+
+
+  /* "Mode" group: */
+
+  s->opt[OPT_MODE_GROUP].title = "Scan Mode";
+  s->opt[OPT_MODE_GROUP].desc = "";
+  s->opt[OPT_MODE_GROUP].type = SANE_TYPE_GROUP;
+  s->opt[OPT_MODE_GROUP].cap = 0;
+  s->opt[OPT_MODE_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+  halftone_pattern_list[0]="spiral4x4";
+  halftone_pattern_list[1]="bayer4x4";
+  halftone_pattern_list[2]="download";
+  halftone_pattern_list[3]=NULL;
+  
+
+  switch (s->hw->ScannerModel)
+    {
+    case APPLESCANNER:
+      mode_list[0]=SANE_VALUE_SCAN_MODE_LINEART;
+      mode_list[1]=SANE_VALUE_SCAN_MODE_HALFTONE;
+      mode_list[2]="Gray16";
+      mode_list[3]=NULL;
+      break;
+    case ONESCANNER:
+      mode_list[0]=SANE_VALUE_SCAN_MODE_LINEART;
+      mode_list[1]=SANE_VALUE_SCAN_MODE_HALFTONE;
+      mode_list[2]="Gray16";
+      mode_list[3]=SANE_VALUE_SCAN_MODE_GRAY;
+      mode_list[4]=NULL;
+      halftone_pattern_list[3]="spiral8x8";
+      halftone_pattern_list[4]="bayer8x8";
+      halftone_pattern_list[5]=NULL;
+      break;
+    case COLORONESCANNER:
+      mode_list[0]=SANE_VALUE_SCAN_MODE_LINEART;
+      mode_list[1]="Gray16";
+      mode_list[2]=SANE_VALUE_SCAN_MODE_GRAY;
+      mode_list[3]="BiColor";
+      mode_list[4]=SANE_VALUE_SCAN_MODE_COLOR;
+      mode_list[5]=NULL;
+      break;
+    default:
+      break;
+    }
+
+
+  /* scan mode */
+  s->opt[OPT_MODE].name = SANE_NAME_SCAN_MODE;
+  s->opt[OPT_MODE].title = SANE_TITLE_SCAN_MODE;
+  s->opt[OPT_MODE].desc = SANE_DESC_SCAN_MODE;
+  s->opt[OPT_MODE].type = SANE_TYPE_STRING;
+  s->opt[OPT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+  s->opt[OPT_MODE].size = max_string_size (mode_list);
+  s->opt[OPT_MODE].constraint.string_list = mode_list;
+  s->val[OPT_MODE].s = strdup (mode_list[0]);
+
+
+  /* resolution */
+  s->opt[OPT_RESOLUTION].name = SANE_NAME_SCAN_RESOLUTION;
+  s->opt[OPT_RESOLUTION].title = SANE_TITLE_SCAN_RESOLUTION;
+  s->opt[OPT_RESOLUTION].desc = SANE_DESC_SCAN_RESOLUTION;
+  s->opt[OPT_RESOLUTION].type = SANE_TYPE_INT;
+  s->opt[OPT_RESOLUTION].unit = SANE_UNIT_DPI;
+/* TODO: Build the constraints on resolution in a smart way */
+  s->opt[OPT_RESOLUTION].constraint_type = SANE_CONSTRAINT_WORD_LIST;
+  s->opt[OPT_RESOLUTION].constraint.word_list = resbit_list;
+  s->val[OPT_RESOLUTION].w = resbit_list[1];
+
+  /* preview */
+  s->opt[OPT_PREVIEW].name = SANE_NAME_PREVIEW;
+  s->opt[OPT_PREVIEW].title = SANE_TITLE_PREVIEW;
+  s->opt[OPT_PREVIEW].desc = SANE_DESC_PREVIEW;
+  s->opt[OPT_PREVIEW].cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+  s->opt[OPT_PREVIEW].type = SANE_TYPE_BOOL;
+  s->val[OPT_PREVIEW].w = SANE_FALSE;
+
+  /* "Geometry" group: */
+  s->opt[OPT_GEOMETRY_GROUP].title = "Geometry";
+  s->opt[OPT_GEOMETRY_GROUP].desc = "";
+  s->opt[OPT_GEOMETRY_GROUP].type = SANE_TYPE_GROUP;
+  s->opt[OPT_GEOMETRY_GROUP].cap = SANE_CAP_ADVANCED;
+  s->opt[OPT_GEOMETRY_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+  /* top-left x */
+  s->opt[OPT_TL_X].name = SANE_NAME_SCAN_TL_X;
+  s->opt[OPT_TL_X].title = SANE_TITLE_SCAN_TL_X;
+  s->opt[OPT_TL_X].desc = SANE_DESC_SCAN_TL_X;
+  s->opt[OPT_TL_X].type = SANE_TYPE_FIXED;
+  s->opt[OPT_TL_X].unit = SANE_UNIT_MM;
+  s->opt[OPT_TL_X].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_TL_X].constraint.range = &s->hw->x_range;
+  s->val[OPT_TL_X].w = 0;
+
+  /* top-left y */
+  s->opt[OPT_TL_Y].name = SANE_NAME_SCAN_TL_Y;
+  s->opt[OPT_TL_Y].title = SANE_TITLE_SCAN_TL_Y;
+  s->opt[OPT_TL_Y].desc = SANE_DESC_SCAN_TL_Y;
+  s->opt[OPT_TL_Y].type = SANE_TYPE_FIXED;
+  s->opt[OPT_TL_Y].unit = SANE_UNIT_MM;
+  s->opt[OPT_TL_Y].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_TL_Y].constraint.range = &s->hw->y_range;
+  s->val[OPT_TL_Y].w = 0;
+
+  /* bottom-right x */
+  s->opt[OPT_BR_X].name = SANE_NAME_SCAN_BR_X;
+  s->opt[OPT_BR_X].title = SANE_TITLE_SCAN_BR_X;
+  s->opt[OPT_BR_X].desc = SANE_DESC_SCAN_BR_X;
+  s->opt[OPT_BR_X].type = SANE_TYPE_FIXED;
+  s->opt[OPT_BR_X].unit = SANE_UNIT_MM;
+  s->opt[OPT_BR_X].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_BR_X].constraint.range = &s->hw->x_range;
+  s->val[OPT_BR_X].w = s->hw->x_range.max;
+
+  /* bottom-right y */
+  s->opt[OPT_BR_Y].name = SANE_NAME_SCAN_BR_Y;
+  s->opt[OPT_BR_Y].title = SANE_TITLE_SCAN_BR_Y;
+  s->opt[OPT_BR_Y].desc = SANE_DESC_SCAN_BR_Y;
+  s->opt[OPT_BR_Y].type = SANE_TYPE_FIXED;
+  s->opt[OPT_BR_Y].unit = SANE_UNIT_MM;
+  s->opt[OPT_BR_Y].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_BR_Y].constraint.range = &s->hw->y_range;
+  s->val[OPT_BR_Y].w = s->hw->y_range.max;
+
+
+  /* "Enhancement" group: */
+
+  s->opt[OPT_ENHANCEMENT_GROUP].title = "Enhancement";
+  s->opt[OPT_ENHANCEMENT_GROUP].desc = "";
+  s->opt[OPT_ENHANCEMENT_GROUP].type = SANE_TYPE_GROUP;
+  s->opt[OPT_ENHANCEMENT_GROUP].cap = 0;
+  s->opt[OPT_ENHANCEMENT_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+  /* brightness */
+  s->opt[OPT_BRIGHTNESS].name = SANE_NAME_BRIGHTNESS;
+  s->opt[OPT_BRIGHTNESS].title = SANE_TITLE_BRIGHTNESS;
+  s->opt[OPT_BRIGHTNESS].desc = SANE_DESC_BRIGHTNESS;
+  s->opt[OPT_BRIGHTNESS].type = SANE_TYPE_INT;
+  s->opt[OPT_BRIGHTNESS].unit = SANE_UNIT_NONE;
+  s->opt[OPT_BRIGHTNESS].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_BRIGHTNESS].constraint.range = &byte_range;
+  s->val[OPT_BRIGHTNESS].w = 128;
+
+  /* contrast */
+  s->opt[OPT_CONTRAST].name = SANE_NAME_CONTRAST;
+  s->opt[OPT_CONTRAST].title = SANE_TITLE_CONTRAST;
+  s->opt[OPT_CONTRAST].desc = SANE_DESC_CONTRAST
+    " This option is active for halftone/Grayscale modes only.";
+  s->opt[OPT_CONTRAST].type = SANE_TYPE_INT;
+  s->opt[OPT_CONTRAST].unit = SANE_UNIT_NONE;
+  s->opt[OPT_CONTRAST].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_CONTRAST].constraint.range = &byte_range;
+  s->val[OPT_CONTRAST].w = 1;
+
+  /* threshold */
+  s->opt[OPT_THRESHOLD].name = SANE_NAME_THRESHOLD;
+  s->opt[OPT_THRESHOLD].title = SANE_TITLE_THRESHOLD;
+  s->opt[OPT_THRESHOLD].desc = SANE_DESC_THRESHOLD;
+  s->opt[OPT_THRESHOLD].type = SANE_TYPE_INT;
+  s->opt[OPT_THRESHOLD].unit = SANE_UNIT_NONE;
+  s->opt[OPT_THRESHOLD].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_THRESHOLD].constraint.range = &byte_range;
+  s->val[OPT_THRESHOLD].w = 128;
+
+  /* AppleScanner Only options */
+
+  /* GrayMap Enhance */
+  s->opt[OPT_GRAYMAP].name = "graymap";
+  s->opt[OPT_GRAYMAP].title = "GrayMap";
+  s->opt[OPT_GRAYMAP].desc = "Fixed Gamma Enhancing";
+  s->opt[OPT_GRAYMAP].type = SANE_TYPE_STRING;
+  s->opt[OPT_GRAYMAP].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+  if (s->hw->ScannerModel != APPLESCANNER)
+    s->opt[OPT_GRAYMAP].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_GRAYMAP].constraint.string_list = graymap_list;
+  s->opt[OPT_GRAYMAP].size = max_string_size (graymap_list);
+  s->val[OPT_GRAYMAP].s = strdup (graymap_list[1]);
+
+  /* Enable auto background adjustment */
+  s->opt[OPT_AUTOBACKGROUND].name = "abj";
+  s->opt[OPT_AUTOBACKGROUND].title = "Use Auto Background Adjustment";
+  s->opt[OPT_AUTOBACKGROUND].desc =
+      "Enables/Disables the Auto Background Adjustment feature";
+  if (strcmp (s->val[OPT_MODE].s, SANE_VALUE_SCAN_MODE_LINEART)
+      || (s->hw->ScannerModel != APPLESCANNER))
+    DISABLE (OPT_AUTOBACKGROUND);
+  s->opt[OPT_AUTOBACKGROUND].type = SANE_TYPE_BOOL;
+  s->val[OPT_AUTOBACKGROUND].w = SANE_FALSE;
+
+  /* auto background adjustment threshold */
+  s->opt[OPT_AUTOBACKGROUND_THRESHOLD].name = "abjthreshold";
+  s->opt[OPT_AUTOBACKGROUND_THRESHOLD].title = "Auto Background Adjustment Threshold";
+  s->opt[OPT_AUTOBACKGROUND_THRESHOLD].desc = "Selects the automatically adjustable threshold";
+  s->opt[OPT_AUTOBACKGROUND_THRESHOLD].type = SANE_TYPE_INT;
+  s->opt[OPT_AUTOBACKGROUND_THRESHOLD].unit = SANE_UNIT_NONE;
+  s->opt[OPT_AUTOBACKGROUND_THRESHOLD].constraint_type = SANE_CONSTRAINT_RANGE;
+
+  if (!IS_ACTIVE (OPT_AUTOBACKGROUND) ||
+      s->val[OPT_AUTOBACKGROUND].w == SANE_FALSE)
+    s->opt[OPT_AUTOBACKGROUND_THRESHOLD].cap |= SANE_CAP_INACTIVE;
+
+  s->opt[OPT_AUTOBACKGROUND_THRESHOLD].constraint.range = &byte_range;
+  s->val[OPT_AUTOBACKGROUND_THRESHOLD].w = 64;
+
+ 
+  /* AppleScanner & OneScanner options  */
+
+  /* Select HalfTone Pattern  */
+  s->opt[OPT_HALFTONE_PATTERN].name = SANE_NAME_HALFTONE_PATTERN;
+  s->opt[OPT_HALFTONE_PATTERN].title = SANE_TITLE_HALFTONE_PATTERN;
+  s->opt[OPT_HALFTONE_PATTERN].desc = SANE_DESC_HALFTONE_PATTERN;
+  s->opt[OPT_HALFTONE_PATTERN].size = max_string_size (halftone_pattern_list);
+  s->opt[OPT_HALFTONE_PATTERN].type = SANE_TYPE_STRING;
+  s->opt[OPT_HALFTONE_PATTERN].cap |= SANE_CAP_AUTOMATIC;
+  s->opt[OPT_HALFTONE_PATTERN].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+  s->opt[OPT_HALFTONE_PATTERN].constraint.string_list = halftone_pattern_list;
+  s->val[OPT_HALFTONE_PATTERN].s = strdup (halftone_pattern_list[0]);
+
+  if (s->hw->ScannerModel!=APPLESCANNER && s->hw->ScannerModel!=ONESCANNER)
+    s->opt[OPT_HALFTONE_PATTERN].cap |= SANE_CAP_INACTIVE;
+
+
+  /* halftone pattern file */
+  s->opt[OPT_HALFTONE_FILE].name = "halftone-pattern-file";
+  s->opt[OPT_HALFTONE_FILE].title = "Halftone Pattern File";
+  s->opt[OPT_HALFTONE_FILE].desc =
+    "Download and use the specified file as halftone pattern";
+  s->opt[OPT_HALFTONE_FILE].type = SANE_TYPE_STRING;
+  s->opt[OPT_HALFTONE_FILE].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_HALFTONE_FILE].size = 256;
+  s->val[OPT_HALFTONE_FILE].s = "halftone.pgm";
+
+  /* Use volt_ref */
+  s->opt[OPT_VOLT_REF].name = "volt-ref";
+  s->opt[OPT_VOLT_REF].title = "Volt Reference";
+  s->opt[OPT_VOLT_REF].desc ="It's brightness equivalant.";
+  s->opt[OPT_VOLT_REF].type = SANE_TYPE_BOOL;
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_VOLT_REF].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_VOLT_REF].w = SANE_FALSE;
+
+  s->opt[OPT_VOLT_REF_TOP].name = "volt-ref-top";
+  s->opt[OPT_VOLT_REF_TOP].title = "Top Voltage Reference";
+  s->opt[OPT_VOLT_REF_TOP].desc = "I really do not know.";
+  s->opt[OPT_VOLT_REF_TOP].type = SANE_TYPE_INT;
+  s->opt[OPT_VOLT_REF_TOP].unit = SANE_UNIT_NONE;
+  if (s->hw->ScannerModel!=COLORONESCANNER || s->val[OPT_VOLT_REF].w==SANE_FALSE)
+    s->opt[OPT_VOLT_REF_TOP].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_VOLT_REF_TOP].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_VOLT_REF_TOP].constraint.range = &byte_range;
+  s->val[OPT_VOLT_REF_TOP].w = 255;
+
+  s->opt[OPT_VOLT_REF_BOTTOM].name = "volt-ref-bottom";
+  s->opt[OPT_VOLT_REF_BOTTOM].title = "Bottom Voltage Reference";
+  s->opt[OPT_VOLT_REF_BOTTOM].desc = "I really do not know.";
+  s->opt[OPT_VOLT_REF_BOTTOM].type = SANE_TYPE_INT;
+  s->opt[OPT_VOLT_REF_BOTTOM].unit = SANE_UNIT_NONE;
+  if (s->hw->ScannerModel!=COLORONESCANNER || s->val[OPT_VOLT_REF].w==SANE_FALSE)
+    s->opt[OPT_VOLT_REF_BOTTOM].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_VOLT_REF_BOTTOM].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_VOLT_REF_BOTTOM].constraint.range = &byte_range;
+  s->val[OPT_VOLT_REF_BOTTOM].w = 1;
+
+/* Misc Functions: Advanced */
+
+  s->opt[OPT_MISC_GROUP].title = "Miscallaneous";
+  s->opt[OPT_MISC_GROUP].desc = "";
+  s->opt[OPT_MISC_GROUP].type = SANE_TYPE_GROUP;
+  s->opt[OPT_MISC_GROUP].cap = SANE_CAP_ADVANCED;
+  s->opt[OPT_MISC_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+
+  /* Turn On lamp  during scan: All scanners */
+  s->opt[OPT_LAMP].name = "lamp";
+  s->opt[OPT_LAMP].title = "Lamp";
+  s->opt[OPT_LAMP].desc = "Hold the lamp on during scans.";
+  s->opt[OPT_LAMP].type = SANE_TYPE_BOOL;
+  s->val[OPT_LAMP].w = SANE_FALSE;
+
+  /* AppleScanner Only options */
+
+  /* Wait for button to be pressed before scanning */
+  s->opt[OPT_WAIT].name = "wait";
+  s->opt[OPT_WAIT].title = "Wait";
+  s->opt[OPT_WAIT].desc = "You may issue the scan command but the actual "
+  "scan will not start unless you press the button in the front of the "
+  "scanner. It is usefull feature when you want to make a network scan (?) "
+  "In the mean time you may halt your computer waiting for the SCSI bus "
+  "to be free. If this happens just press the scanner button.";
+  s->opt[OPT_WAIT].type = SANE_TYPE_BOOL;
+  if (s->hw->ScannerModel != APPLESCANNER)
+    s->opt[OPT_WAIT].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_WAIT].w = SANE_FALSE;
+
+
+  /* OneScanner Only options */
+
+  /* Calibrate before scanning ? */
+  s->opt[OPT_CALIBRATE].name = "calibrate";
+  s->opt[OPT_CALIBRATE].title = "Calibrate";
+  s->opt[OPT_CALIBRATE].desc = "You may avoid the calibration before "
+      "scanning but this will lead you to lower image quality.";
+  s->opt[OPT_CALIBRATE].type = SANE_TYPE_BOOL;
+  if (s->hw->ScannerModel != ONESCANNER)
+    s->opt[OPT_CALIBRATE].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_CALIBRATE].w = SANE_TRUE;
+
+  /* speed */
+  s->opt[OPT_SPEED].name = SANE_NAME_SCAN_SPEED;
+  s->opt[OPT_SPEED].title = SANE_TITLE_SCAN_SPEED;
+  s->opt[OPT_SPEED].desc = SANE_DESC_SCAN_SPEED;
+  s->opt[OPT_SPEED].type = SANE_TYPE_STRING;
+  if (s->hw->ScannerModel != ONESCANNER)
+    s->opt[OPT_SPEED].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_SPEED].size = max_string_size (speed_list);
+  s->opt[OPT_SPEED].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+  s->opt[OPT_SPEED].constraint.string_list = speed_list;
+  s->val[OPT_SPEED].s = strdup (speed_list[0]);
+
+  /* OneScanner & ColorOneScanner (LED && CCD) */
+
+  /* LED ? */
+  s->opt[OPT_LED].name = "led";
+  s->opt[OPT_LED].title = "LED";
+  s->opt[OPT_LED].desc ="This option controls the setting of the ambler LED.";
+  s->opt[OPT_LED].type = SANE_TYPE_BOOL;
+  if (s->hw->ScannerModel!=ONESCANNER && s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_LED].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_LED].w = SANE_TRUE;
+
+  /* CCD Power ? */
+  s->opt[OPT_CCD].name = "ccd";
+  s->opt[OPT_CCD].title = "CCD Power";
+  s->opt[OPT_CCD].desc ="This option controls the power to the CCD array.";
+  s->opt[OPT_CCD].type = SANE_TYPE_BOOL;
+  if (s->hw->ScannerModel!=ONESCANNER && s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_CCD].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_CCD].w = SANE_TRUE;
+
+  /*  Use MTF Circuit */
+  s->opt[OPT_MTF_CIRCUIT].name = "mtf";
+  s->opt[OPT_MTF_CIRCUIT].title = "MTF Circuit";
+  s->opt[OPT_MTF_CIRCUIT].desc ="Turns the MTF (Modulation Transfer Function) "
+						"peaking circuit on or off.";
+  s->opt[OPT_MTF_CIRCUIT].type = SANE_TYPE_BOOL;
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_MTF_CIRCUIT].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_MTF_CIRCUIT].w = SANE_TRUE;
+
+
+  /* Use ICP */
+  s->opt[OPT_ICP].name = "icp";
+  s->opt[OPT_ICP].title = "ICP";
+  s->opt[OPT_ICP].desc ="What is an ICP anyway?";
+  s->opt[OPT_ICP].type = SANE_TYPE_BOOL;
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_ICP].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_ICP].w = SANE_TRUE;
+
+
+  /* Data Polarity */
+  s->opt[OPT_POLARITY].name = "polarity";
+  s->opt[OPT_POLARITY].title = "Data Polarity";
+  s->opt[OPT_POLARITY].desc = "Reverse black and white.";
+  s->opt[OPT_POLARITY].type = SANE_TYPE_BOOL;
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_POLARITY].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_POLARITY].w = SANE_FALSE;
+
+
+/* Color Functions: Advanced */
+
+  s->opt[OPT_COLOR_GROUP].title = SANE_VALUE_SCAN_MODE_COLOR;
+  s->opt[OPT_COLOR_GROUP].desc = "";
+  s->opt[OPT_COLOR_GROUP].type = SANE_TYPE_GROUP;
+  s->opt[OPT_COLOR_GROUP].cap = SANE_CAP_ADVANCED;
+  s->opt[OPT_COLOR_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
+
+#ifdef CALIBRATION_FUNCTIONALITY
+  /* OneScanner calibration vector */
+  s->opt[OPT_CALIBRATION_VECTOR].name = "calibration-vector";
+  s->opt[OPT_CALIBRATION_VECTOR].title = "Calibration Vector";
+  s->opt[OPT_CALIBRATION_VECTOR].desc = "Calibration vector for the CCD array.";
+  s->opt[OPT_CALIBRATION_VECTOR].type = SANE_TYPE_INT;
+  if (s->hw->ScannerModel!=ONESCANNER)
+    s->opt[OPT_CALIBRATION_VECTOR].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_CALIBRATION_VECTOR].unit = SANE_UNIT_NONE;
+  s->opt[OPT_CALIBRATION_VECTOR].size = 2550 * sizeof (SANE_Word);
+  s->opt[OPT_CALIBRATION_VECTOR].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_CALIBRATION_VECTOR].constraint.range = &u8_range;
+  s->val[OPT_CALIBRATION_VECTOR].wa = s->calibration_vector;
+
+  /* ColorOneScanner calibration vector per band */
+  s->opt[OPT_CALIBRATION_VECTOR_RED].name = "calibration-vector-red";
+  s->opt[OPT_CALIBRATION_VECTOR_RED].title = "Calibration Vector for Red";
+  s->opt[OPT_CALIBRATION_VECTOR_RED].desc = "Calibration vector for the CCD array.";
+  s->opt[OPT_CALIBRATION_VECTOR_RED].type = SANE_TYPE_INT;
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_CALIBRATION_VECTOR_RED].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_CALIBRATION_VECTOR_RED].unit = SANE_UNIT_NONE;
+  s->opt[OPT_CALIBRATION_VECTOR_RED].size = 2700 * sizeof (SANE_Word);
+  s->opt[OPT_CALIBRATION_VECTOR_RED].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_CALIBRATION_VECTOR_RED].constraint.range = &u8_range;
+  s->val[OPT_CALIBRATION_VECTOR_RED].wa = s->calibration_vector_red;
+
+  /* ColorOneScanner calibration vector per band */
+  s->opt[OPT_CALIBRATION_VECTOR_GREEN].name = "calibration-vector-green";
+  s->opt[OPT_CALIBRATION_VECTOR_GREEN].title = "Calibration Vector for Green";
+  s->opt[OPT_CALIBRATION_VECTOR_GREEN].desc = "Calibration vector for the CCD array.";
+  s->opt[OPT_CALIBRATION_VECTOR_GREEN].type = SANE_TYPE_INT;
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_CALIBRATION_VECTOR].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_CALIBRATION_VECTOR_GREEN].unit = SANE_UNIT_NONE;
+  s->opt[OPT_CALIBRATION_VECTOR_GREEN].size = 2700 * sizeof (SANE_Word);
+  s->opt[OPT_CALIBRATION_VECTOR_GREEN].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_CALIBRATION_VECTOR_GREEN].constraint.range = &u8_range;
+  s->val[OPT_CALIBRATION_VECTOR_GREEN].wa = s->calibration_vector_green;
+
+  /* ColorOneScanner calibration vector per band */
+  s->opt[OPT_CALIBRATION_VECTOR_BLUE].name = "calibration-vector-blue";
+  s->opt[OPT_CALIBRATION_VECTOR_BLUE].title = "Calibration Vector for Blue";
+  s->opt[OPT_CALIBRATION_VECTOR_BLUE].desc = "Calibration vector for the CCD array.";
+  s->opt[OPT_CALIBRATION_VECTOR_BLUE].type = SANE_TYPE_INT;
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_CALIBRATION_VECTOR_BLUE].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_CALIBRATION_VECTOR_BLUE].unit = SANE_UNIT_NONE;
+  s->opt[OPT_CALIBRATION_VECTOR_BLUE].size = 2700 * sizeof (SANE_Word);
+  s->opt[OPT_CALIBRATION_VECTOR_BLUE].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_CALIBRATION_VECTOR_BLUE].constraint.range = &u8_range;
+  s->val[OPT_CALIBRATION_VECTOR_BLUE].wa = s->calibration_vector_blue;
+#endif /* CALIBRATION_FUNCTIONALITY */
+
+  /* Action: Download calibration vector */
+  s->opt[OPT_DOWNLOAD_CALIBRATION_VECTOR].name = "download-calibration";
+  s->opt[OPT_DOWNLOAD_CALIBRATION_VECTOR].title = "Download Calibration Vector";
+  s->opt[OPT_DOWNLOAD_CALIBRATION_VECTOR].desc = "Download calibration vector to scanner";
+  s->opt[OPT_DOWNLOAD_CALIBRATION_VECTOR].type = SANE_TYPE_BUTTON;
+  if (s->hw->ScannerModel!=ONESCANNER && s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_DOWNLOAD_CALIBRATION_VECTOR].cap |= SANE_CAP_INACTIVE;
+
+  /* custom-cct table */
+  s->opt[OPT_CUSTOM_CCT].name = "custom-cct";
+  s->opt[OPT_CUSTOM_CCT].title = "Use Custom CCT";
+  s->opt[OPT_CUSTOM_CCT].desc ="Determines whether a builtin "
+	"or a custom 3x3 Color Correction Table (CCT) should be used.";
+  s->opt[OPT_CUSTOM_CCT].type = SANE_TYPE_BOOL;
+  s->opt[OPT_CUSTOM_CCT].cap |= SANE_CAP_INACTIVE;
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_CUSTOM_CCT].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_CUSTOM_CCT].w = SANE_FALSE;
+
+
+  /* CCT */
+  s->opt[OPT_CCT].name = "cct";
+  s->opt[OPT_CCT].title = "3x3 Color Correction Table";
+  s->opt[OPT_CCT].desc = "TODO: Color Correction is currently unsupported";
+  s->opt[OPT_CCT].type = SANE_TYPE_FIXED;
+  s->opt[OPT_CCT].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_CCT].unit = SANE_UNIT_NONE;
+  s->opt[OPT_CCT].size = 9 * sizeof (SANE_Word);
+  s->opt[OPT_CCT].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_CCT].constraint.range = &u8_range;
+  s->val[OPT_CCT].wa = s->cct3x3;
+
+
+  /* Action: custom 3x3 color correction table */
+  s->opt[OPT_DOWNLOAD_CCT].name = "download-3x3";
+  s->opt[OPT_DOWNLOAD_CCT].title = "Download 3x3 CCT";
+  s->opt[OPT_DOWNLOAD_CCT].desc = "Download 3x3 color correction table";
+  s->opt[OPT_DOWNLOAD_CCT].type = SANE_TYPE_BUTTON;
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_DOWNLOAD_CCT].cap |= SANE_CAP_INACTIVE;
+
+
+  /* custom-gamma table */
+  s->opt[OPT_CUSTOM_GAMMA].name = SANE_NAME_CUSTOM_GAMMA;
+  s->opt[OPT_CUSTOM_GAMMA].title = SANE_TITLE_CUSTOM_GAMMA;
+  s->opt[OPT_CUSTOM_GAMMA].desc = SANE_DESC_CUSTOM_GAMMA;
+  s->opt[OPT_CUSTOM_GAMMA].type = SANE_TYPE_BOOL;
+  s->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
+  s->val[OPT_CUSTOM_GAMMA].w = SANE_FALSE;
+
+  /* red gamma vector */
+  s->opt[OPT_GAMMA_VECTOR_R].name = SANE_NAME_GAMMA_VECTOR_R;
+  s->opt[OPT_GAMMA_VECTOR_R].title = SANE_TITLE_GAMMA_VECTOR_R;
+  s->opt[OPT_GAMMA_VECTOR_R].desc = SANE_DESC_GAMMA_VECTOR_R;
+  s->opt[OPT_GAMMA_VECTOR_R].type = SANE_TYPE_INT;
+  s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_GAMMA_VECTOR_R].unit = SANE_UNIT_NONE;
+  s->opt[OPT_GAMMA_VECTOR_R].size = 256 * sizeof (SANE_Word);
+  s->opt[OPT_GAMMA_VECTOR_R].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_GAMMA_VECTOR_R].constraint.range = &u8_range;
+  s->val[OPT_GAMMA_VECTOR_R].wa = &s->gamma_table[0][0];
+
+  /* green gamma vector */
+  s->opt[OPT_GAMMA_VECTOR_G].name = SANE_NAME_GAMMA_VECTOR_G;
+  s->opt[OPT_GAMMA_VECTOR_G].title = SANE_TITLE_GAMMA_VECTOR_G;
+  s->opt[OPT_GAMMA_VECTOR_G].desc = SANE_DESC_GAMMA_VECTOR_G;
+  s->opt[OPT_GAMMA_VECTOR_G].type = SANE_TYPE_INT;
+  s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_GAMMA_VECTOR_G].unit = SANE_UNIT_NONE;
+  s->opt[OPT_GAMMA_VECTOR_G].size = 256 * sizeof (SANE_Word);
+  s->opt[OPT_GAMMA_VECTOR_G].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_GAMMA_VECTOR_G].constraint.range = &u8_range;
+  s->val[OPT_GAMMA_VECTOR_G].wa = &s->gamma_table[1][0];
+
+  /* blue gamma vector */
+  s->opt[OPT_GAMMA_VECTOR_B].name = SANE_NAME_GAMMA_VECTOR_B;
+  s->opt[OPT_GAMMA_VECTOR_B].title = SANE_TITLE_GAMMA_VECTOR_B;
+  s->opt[OPT_GAMMA_VECTOR_B].desc = SANE_DESC_GAMMA_VECTOR_B;
+  s->opt[OPT_GAMMA_VECTOR_B].type = SANE_TYPE_INT;
+  s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_GAMMA_VECTOR_B].unit = SANE_UNIT_NONE;
+  s->opt[OPT_GAMMA_VECTOR_B].size = 256 * sizeof (SANE_Word);
+  s->opt[OPT_GAMMA_VECTOR_B].constraint_type = SANE_CONSTRAINT_RANGE;
+  s->opt[OPT_GAMMA_VECTOR_B].constraint.range = &u8_range;
+  s->val[OPT_GAMMA_VECTOR_B].wa = &s->gamma_table[2][0];
+
+  /* Action: download gamma vectors table */
+  s->opt[OPT_DOWNLOAD_GAMMA].name = "download-gamma";
+  s->opt[OPT_DOWNLOAD_GAMMA].title = "Download Gamma Vector(s)";
+  s->opt[OPT_DOWNLOAD_GAMMA].desc = "Download Gamma Vector(s).";
+  s->opt[OPT_DOWNLOAD_GAMMA].type = SANE_TYPE_BUTTON;
+  s->opt[OPT_DOWNLOAD_GAMMA].cap |= SANE_CAP_INACTIVE;
+
+  s->opt[OPT_COLOR_SENSOR].name = "color-sensor";
+  s->opt[OPT_COLOR_SENSOR].title = "Gray scan with";
+  s->opt[OPT_COLOR_SENSOR].desc = "Select the color sensor to scan in gray mode.";
+  s->opt[OPT_COLOR_SENSOR].type = SANE_TYPE_STRING;
+  s->opt[OPT_COLOR_SENSOR].unit = SANE_UNIT_NONE;
+  s->opt[OPT_COLOR_SENSOR].size = max_string_size (color_sensor_list);
+  if (s->hw->ScannerModel!=COLORONESCANNER)
+    s->opt[OPT_COLOR_SENSOR].cap |= SANE_CAP_INACTIVE;
+  s->opt[OPT_COLOR_SENSOR].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+  s->opt[OPT_COLOR_SENSOR].constraint.string_list = color_sensor_list;
+  s->val[OPT_COLOR_SENSOR].s = strdup(color_sensor_list[2]);
+
+
+  mode_update (s, s->val[OPT_MODE].s);
+
+  return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+attach_one (const char *dev)
+{
+  attach (dev, 0, SANE_FALSE);
+  return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize)
+{
+  char dev_name[PATH_MAX];
+  size_t len;
+  FILE *fp;
+
+  authorize = authorize;	/* silence gcc */
+
+  DBG_INIT ();
+
+  if (version_code)
+    *version_code = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, V_MINOR, 0);
+
+  fp = sanei_config_open (APPLE_CONFIG_FILE);
+  if (!fp)
+    {
+      /* default to /dev/scanner instead of insisting on config file */
+      attach ("/dev/scanner", 0, SANE_FALSE);
+      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 */
+
+      if (strncmp (dev_name, "option", 6) == 0
+	  && isspace (dev_name[6]))
+	{
+	  const char *str = dev_name + 7;
+
+	  while (isspace (*str))
+	    ++str;
+
+	  continue;
+	}
+
+      sanei_config_attach_matching_devices (dev_name, attach_one);
+    }
+  fclose (fp);
+  return SANE_STATUS_GOOD;
+}
+
+void
+sane_exit (void)
+{
+  Apple_Device *dev, *next;
+
+  for (dev = first_dev; dev; dev = next)
+    {
+      next = dev->next;
+      free ((void *) dev->sane.name);
+      free ((void *) dev->sane.model);
+      free (dev);
+    }
+}
+
+SANE_Status
+sane_get_devices (const SANE_Device *** device_list, SANE_Bool local_only)
+{
+  static const SANE_Device **devlist = 0;
+  Apple_Device *dev;
+  int i;
+
+  local_only = local_only;		/* silence gcc */
+
+  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;
+  return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_open (SANE_String_Const devicename, SANE_Handle * handle)
+{
+  Apple_Device *dev;
+  SANE_Status status;
+  Apple_Scanner *s;
+  int i, j;
+
+  if (devicename[0])
+    {
+      for (dev = first_dev; dev; dev = dev->next)
+	if (strcmp (dev->sane.name, devicename) == 0)
+	  break;
+
+      if (!dev)
+	{
+	  status = attach (devicename, &dev, SANE_TRUE);
+	  if (status != SANE_STATUS_GOOD)
+	    return status;
+	}
+    }
+  else
+    /* empty devicname -> use first device */
+    dev = first_dev;
+
+  if (!dev)
+    return SANE_STATUS_INVAL;
+
+  s = malloc (sizeof (*s));
+  if (!s)
+    return SANE_STATUS_NO_MEM;
+  memset (s, 0, sizeof (*s));
+  s->fd = -1;
+  s->hw = dev;
+  for (i = 0; i < 3; ++i)
+    for (j = 0; j < 256; ++j)
+      s->gamma_table[i][j] = j;
+
+  init_options (s);
+
+  /* insert newly opened handle into list of open handles: */
+  s->next = first_handle;
+  first_handle = s;
+
+  *handle = s;
+  return SANE_STATUS_GOOD;
+}
+
+void
+sane_close (SANE_Handle handle)
+{
+  Apple_Scanner *prev, *s;
+
+  /* remove handle from list of open handles: */
+  prev = 0;
+  for (s = first_handle; s; s = s->next)
+    {
+      if (s == handle)
+	break;
+      prev = s;
+    }
+  if (!s)
+    {
+      DBG (ERROR_MESSAGE, "close: invalid handle %p\n", handle);
+      return;			/* oops, not a handle we know about */
+    }
+
+  if (prev)
+    prev->next = s->next;
+  else
+    first_handle = s->next;
+
+  free (handle);
+}
+
+const SANE_Option_Descriptor *
+sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
+{
+  Apple_Scanner *s = handle;
+
+  if ((unsigned) option >= NUM_OPTIONS)
+    return 0;
+  return s->opt + option;
+}
+
+SANE_Status
+sane_control_option (SANE_Handle handle, SANE_Int option,
+		     SANE_Action action, void *val, SANE_Int * info)
+{
+  Apple_Scanner *s = handle;
+  SANE_Status status;
+  SANE_Word cap;
+
+
+  DBG (FLOW_CONTROL, "(%s): Entering on control_option for option %s (%d).\n",
+       (action == SANE_ACTION_GET_VALUE) ? "get" : "set",
+       s->opt[option].name, option);
+
+  if (val || action == SANE_ACTION_GET_VALUE)
+    switch (s->opt[option].type)
+      {
+      case SANE_TYPE_STRING:
+	DBG (FLOW_CONTROL, "Value %s\n", (action == SANE_ACTION_GET_VALUE) ?
+	  s->val[option].s : (char *) val);
+	break;
+      case SANE_TYPE_FIXED:
+	{
+	double v1, v2;
+	SANE_Fixed f;
+	v1 = SANE_UNFIX (s->val[option].w);
+	f = *(SANE_Fixed *) val;
+	v2 = SANE_UNFIX (f);
+	DBG (FLOW_CONTROL, "Value %g (Fixed)\n",
+	     (action == SANE_ACTION_GET_VALUE) ? v1 : v2);
+        }
+      default:
+	DBG (FLOW_CONTROL, "Value %u (Int).\n",
+		(action == SANE_ACTION_GET_VALUE)
+			? s->val[option].w : *(SANE_Int *) val);
+	break;
+      }
+
+
+  if (info)
+    *info = 0;
+
+  if (s->scanning)
+    return SANE_STATUS_DEVICE_BUSY;
+
+  if (option >= NUM_OPTIONS)
+    return SANE_STATUS_INVAL;
+
+  cap = s->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_PREVIEW:
+	case OPT_TL_X:
+	case OPT_TL_Y:
+	case OPT_BR_X:
+	case OPT_BR_Y:
+	case OPT_BRIGHTNESS:
+	case OPT_CONTRAST:
+	case OPT_THRESHOLD:
+	case OPT_AUTOBACKGROUND:
+	case OPT_AUTOBACKGROUND_THRESHOLD:
+	case OPT_VOLT_REF:
+	case OPT_VOLT_REF_TOP:
+	case OPT_VOLT_REF_BOTTOM:
+
+	case OPT_LAMP:
+	case OPT_WAIT:
+	case OPT_CALIBRATE:
+	case OPT_LED:
+	case OPT_CCD:
+	case OPT_MTF_CIRCUIT:
+	case OPT_ICP:
+	case OPT_POLARITY:
+
+	case OPT_CUSTOM_CCT:
+	case OPT_CUSTOM_GAMMA:
+	  *(SANE_Word *) val = s->val[option].w;
+	  return SANE_STATUS_GOOD;
+
+	  /* word-array options: */
+
+	case OPT_CCT:
+	case OPT_GAMMA_VECTOR_R:
+	case OPT_GAMMA_VECTOR_G:
+	case OPT_GAMMA_VECTOR_B:
+	  memcpy (val, s->val[option].wa, s->opt[option].size);
+	  return SANE_STATUS_GOOD;
+
+	  /* string options: */
+
+	case OPT_MODE:
+/*
+TODO: This is to protect the mode string to be ruined from the dll?
+backend. I do not know why. It's definitely an overkill and should be
+eliminated.
+	  status = sanei_constrain_value (s->opt + option, s->val[option].s,
+					  info);
+*/
+	case OPT_MODEL:
+	case OPT_GRAYMAP:
+	case OPT_HALFTONE_PATTERN:
+	case OPT_HALFTONE_FILE:
+	case OPT_SPEED:
+	case OPT_COLOR_SENSOR:
+	  strcpy (val, s->val[option].s);
+	  return SANE_STATUS_GOOD;
+
+/* Some Buttons */
+	case OPT_DOWNLOAD_CALIBRATION_VECTOR:
+	case OPT_DOWNLOAD_CCT:
+	case OPT_DOWNLOAD_GAMMA:
+	  return SANE_STATUS_INVAL;
+
+	}
+    }
+  else if (action == SANE_ACTION_SET_VALUE)
+    {
+      if (!SANE_OPTION_IS_SETTABLE (cap))
+	return SANE_STATUS_INVAL;
+
+      status = sanei_constrain_value (s->opt + option, val, info);
+
+      if (status != SANE_STATUS_GOOD)
+	return status;
+
+
+      switch (option)
+	{
+	  /* (mostly) side-effect-free word options: */
+	case OPT_RESOLUTION:
+	case OPT_TL_X:
+	case OPT_TL_Y:
+	case OPT_BR_X:
+	case OPT_BR_Y:
+
+	  s->val[option].w = *(SANE_Word *) val;
+	  calc_parameters (s);
+
+	  if (info)
+	    *info |= SANE_INFO_RELOAD_PARAMS
+	      | SANE_INFO_RELOAD_OPTIONS
+	      | SANE_INFO_INEXACT;
+
+	  return SANE_STATUS_GOOD;
+
+	  /* fall through */
+	case OPT_BRIGHTNESS:
+	case OPT_CONTRAST:
+	case OPT_THRESHOLD:
+	case OPT_AUTOBACKGROUND_THRESHOLD:
+	case OPT_VOLT_REF_TOP:
+	case OPT_VOLT_REF_BOTTOM:
+	case OPT_LAMP:
+	case OPT_WAIT:
+	case OPT_CALIBRATE:
+	case OPT_LED:
+	case OPT_CCD:
+	case OPT_MTF_CIRCUIT:
+	case OPT_ICP:
+	case OPT_POLARITY:
+	  s->val[option].w = *(SANE_Word *) val;
+	  return SANE_STATUS_GOOD;
+
+	  /* Simple Strings */
+	case OPT_GRAYMAP:
+	case OPT_HALFTONE_FILE:
+	case OPT_SPEED:
+	  if (s->val[option].s)
+	    free (s->val[option].s);
+	  s->val[option].s = strdup (val);
+	  return SANE_STATUS_GOOD;
+
+	  /* Boolean */
+	case OPT_PREVIEW:
+	  s->val[option].w = *(SANE_Bool *) val;
+	  return SANE_STATUS_GOOD;
+
+
+	  /* side-effect-free word-array options: */
+	case OPT_CCT:
+	case OPT_GAMMA_VECTOR_R:
+	case OPT_GAMMA_VECTOR_G:
+	case OPT_GAMMA_VECTOR_B:
+	  memcpy (s->val[option].wa, val, s->opt[option].size);
+	  return SANE_STATUS_GOOD;
+
+
+	  /* options with light side-effects: */
+
+	case OPT_HALFTONE_PATTERN:
+	  if (info)
+	    *info |= SANE_INFO_RELOAD_OPTIONS;
+	  if (s->val[option].s)
+	    free (s->val[option].s);
+	  s->val[option].s = strdup (val);
+	  if (!strcmp (val, "download"))
+	    {
+	      return SANE_STATUS_UNSUPPORTED;
+	      /* TODO: ENABLE(OPT_HALFTONE_FILE); */
+	    }
+	  else
+	    DISABLE (OPT_HALFTONE_FILE);
+	  return SANE_STATUS_GOOD;
+
+	case OPT_AUTOBACKGROUND:
+	  if (info)
+	    *info |= SANE_INFO_RELOAD_OPTIONS;
+	  s->val[option].w = *(SANE_Bool *) val;
+	  if (*(SANE_Bool *) val)
+	    {
+	      DISABLE (OPT_THRESHOLD);
+	      ENABLE (OPT_AUTOBACKGROUND_THRESHOLD);
+	    }
+	  else
+	    {
+	      ENABLE (OPT_THRESHOLD);
+	      DISABLE (OPT_AUTOBACKGROUND_THRESHOLD);
+	    }
+	  return SANE_STATUS_GOOD;
+	case OPT_VOLT_REF:
+	  if (info)
+	    *info |= SANE_INFO_RELOAD_OPTIONS;
+	  s->val[option].w = *(SANE_Bool *) val;
+	  if (*(SANE_Bool *) val)
+	    {
+	    DISABLE(OPT_BRIGHTNESS);
+	    DISABLE(OPT_CONTRAST);
+	    ENABLE(OPT_VOLT_REF_TOP);
+	    ENABLE(OPT_VOLT_REF_BOTTOM);
+	    }
+	  else
+	    {
+	    ENABLE(OPT_BRIGHTNESS);
+	    ENABLE(OPT_CONTRAST);
+	    DISABLE(OPT_VOLT_REF_TOP);
+	    DISABLE(OPT_VOLT_REF_BOTTOM);
+	    }
+	  return SANE_STATUS_GOOD;
+
+/* Actions: Buttons */
+
+	case OPT_DOWNLOAD_CALIBRATION_VECTOR:
+	case OPT_DOWNLOAD_CCT:
+	case OPT_DOWNLOAD_GAMMA:
+	  /* TODO: fix {down/up}loads */
+	  return SANE_STATUS_UNSUPPORTED;
+
+	case OPT_CUSTOM_CCT:
+	  s->val[OPT_CUSTOM_CCT].w=*(SANE_Word *) val;
+	  if (s->val[OPT_CUSTOM_CCT].w)
+	    {
+		ENABLE(OPT_CCT);
+		ENABLE(OPT_DOWNLOAD_CCT);
+	    }
+	  else
+	    {
+		DISABLE(OPT_CCT);
+		DISABLE(OPT_DOWNLOAD_CCT);
+	    }
+	  if (info)
+	    *info |= SANE_INFO_RELOAD_OPTIONS;
+	  return SANE_STATUS_GOOD;
+
+	case OPT_CUSTOM_GAMMA:
+	  s->val[OPT_CUSTOM_GAMMA].w = *(SANE_Word *) val;
+	  gamma_update(s);
+	  if (info)
+	    *info |= SANE_INFO_RELOAD_OPTIONS;
+	  return SANE_STATUS_GOOD;
+
+	case OPT_COLOR_SENSOR:
+	  if (s->val[option].s)
+	    free (s->val[option].s);
+	  s->val[option].s = strdup (val);
+	  gamma_update(s);
+	  if (info)
+	    *info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
+	  return SANE_STATUS_GOOD;
+
+	  /* HEAVY (RADIOACTIVE) SIDE EFFECTS: CHECKME */
+	case OPT_MODE:
+	  if (s->val[option].s)
+	    free (s->val[option].s);
+	  s->val[option].s = strdup (val);
+
+	  status = mode_update (s, val);
+	  if (status != SANE_STATUS_GOOD)
+	    return status;
+
+	  if (info)
+	    *info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
+	  return SANE_STATUS_GOOD;
+
+	}			/* End of switch */
+    }				/* End of SET_VALUE */
+  return SANE_STATUS_INVAL;
+}
+
+SANE_Status
+sane_get_parameters (SANE_Handle handle, SANE_Parameters * params)
+{
+  Apple_Scanner *s = handle;
+
+  DBG (FLOW_CONTROL, "Entering sane_get_parameters\n");
+  calc_parameters (s);
+
+
+  if (params)
+    *params = s->params;
+  return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_start (SANE_Handle handle)
+{
+  Apple_Scanner *s = handle;
+  SANE_Status status;
+
+  /* First make sure we have a current parameter set.  Some of the
+     parameters will be overwritten below, but that's OK.  */
+
+  calc_parameters (s);
+
+  if (s->fd < 0)
+    {
+      /* this is the first (and maybe only) pass... */
+
+      status = sanei_scsi_open (s->hw->sane.name, &s->fd, sense_handler, 0);
+      if (status != SANE_STATUS_GOOD)
+	{
+	  DBG (ERROR_MESSAGE, "open: open of %s failed: %s\n",
+	       s->hw->sane.name, sane_strstatus (status));
+	  return status;
+	}
+    }
+
+  status = wait_ready (s->fd);
+  if (status != SANE_STATUS_GOOD)
+    {
+      DBG (ERROR_MESSAGE, "open: wait_ready() failed: %s\n",
+	   sane_strstatus (status));
+      goto stop_scanner_and_return;
+    }
+
+  status = mode_select (s);
+  if (status != SANE_STATUS_GOOD)
+    {
+      DBG (ERROR_MESSAGE, "sane_start: mode_select command failed: %s\n",
+	   sane_strstatus (status));
+      goto stop_scanner_and_return;
+    }
+
+  status = scan_area_and_windows (s);
+  if (status != SANE_STATUS_GOOD)
+    {
+      DBG (ERROR_MESSAGE, "open: set scan area command failed: %s\n",
+	   sane_strstatus (status));
+      goto stop_scanner_and_return;
+    }
+
+  status = request_sense (s);
+  if (status != SANE_STATUS_GOOD)
+    {
+      DBG (ERROR_MESSAGE, "sane_start: request_sense revealed error: %s\n",
+	   sane_strstatus (status));
+      goto stop_scanner_and_return;
+    }
+
+  s->scanning = SANE_TRUE;
+  s->AbortedByUser = SANE_FALSE;
+
+  status = start_scan (s);
+  if (status != SANE_STATUS_GOOD)
+    goto stop_scanner_and_return;
+
+  return SANE_STATUS_GOOD;
+
+stop_scanner_and_return:
+  s->scanning = SANE_FALSE;
+  s->AbortedByUser = SANE_FALSE;
+  return status;
+}
+
+SANE_Status
+sane_read (SANE_Handle handle, SANE_Byte * buf, SANE_Int max_len,
+	   SANE_Int * len)
+{
+  Apple_Scanner *s = handle;
+  SANE_Status status;
+
+  uint8_t get_data_status[10];
+  uint8_t read[10];
+
+#ifdef RESERVE_RELEASE_HACK
+  uint8_t reserve[6];
+  uint8_t release[6];
+#endif  
+
+  uint8_t result[12];
+  size_t size;
+  SANE_Int data_length = 0;
+  SANE_Int data_av = 0;
+  SANE_Int offset = 0;
+  SANE_Int rread = 0;
+  SANE_Bool Pseudo8bit = SANE_FALSE;
+
+#ifdef NEUTRALIZE_BACKEND
+  *len=max_len;
+  return SANE_STATUS_GOOD;
+
+#else
+  *len = 0;
+  if (!s->scanning) return SANE_STATUS_EOF;
+  
+
+  if (!strcmp (s->val[OPT_MODE].s, "Gray16"))
+    Pseudo8bit = SANE_TRUE;
+
+  /* TODO: The current function only implements for APPLESCANNER In
+     order to use the COLORONESCANNER you have to study the docs to
+     see how it the parameters get modified before scan. From this
+     starting point it should be trivial to use a ONESCANNER int the
+     gray256 mode but I don't have one from these pets in home.  MF */
+
+
+  memset (get_data_status, 0, sizeof (get_data_status));
+  get_data_status[0] = APPLE_SCSI_GET_DATA_STATUS;
+  get_data_status[1] = 1;	/* Wait */
+  STORE24 (get_data_status + 6, sizeof (result));
+
+  memset (read, 0, sizeof (read));
+  read[0] = APPLE_SCSI_READ_SCANNED_DATA;
+
+
+#ifdef RESERVE_RELEASE_HACK
+  memset (reserve, 0, sizeof (reserve));
+  reserve[0] = APPLE_SCSI_RESERVE;
+
+  reserve[1]=CONTROLLER_SCSI_ID;
+  reserve[1]=reserve[1] << 1;
+  reserve[1]|=SETTHIRDPARTY;
+
+  memset (release, 0, sizeof (release));
+  release[0] = APPLE_SCSI_RELEASE;
+  release[1]=CONTROLLER_SCSI_ID;
+  release[1]=reserve[1] << 1;
+  release[1]|=SETTHIRDPARTY;
+
+#endif
+ 
+  do
+    {
+      size = sizeof (result);
+      status = sanei_scsi_cmd (s->fd, get_data_status,
+			       sizeof (get_data_status), result, &size);
+
+      if (status != SANE_STATUS_GOOD)
+	return status;
+      if (!size)
+	{
+	  DBG (ERROR_MESSAGE, "sane_read: cannot get_data_status.\n");
+	  return SANE_STATUS_IO_ERROR;
+	}
+
+      data_length = READ24 (result);
+      data_av = READ24 (result + 9);
+
+      if (data_length)
+	{
+	  /* if (result[3] & 1)	Scanner Blocked: Retrieve data */
+	  if ((result[3] & 1) || data_av)
+	    {
+	      DBG (IO_MESSAGE,
+		   "sane_read: (status) Available in scanner buffer %u.\n",
+		   data_av);
+
+	      if (Pseudo8bit)
+		if ((data_av << 1) + offset > max_len)
+		  rread = (max_len - offset) >> 1;
+		else
+		  rread = data_av;
+	      else if (data_av + offset > max_len)
+		rread = max_len - offset;
+	      else
+		rread = data_av;
+
+	      DBG (IO_MESSAGE,
+		   "sane_read: (action) Actual read request for %u bytes.\n",
+		   rread);
+
+	      size = rread;
+
+	      STORE24 (read + 6, rread);
+
+#ifdef RESERVE_RELEASE_HACK
+	      {
+	      SANE_Status status;
+	      DBG(IO_MESSAGE,"Reserving the SCSI bus.\n");
+	      status=sanei_scsi_cmd (s->fd,reserve,sizeof(reserve),0,0);
+	      DBG(IO_MESSAGE,"Reserving... status:= %d\n",status);
+	      }
+#endif /* RESERVE_RELEASE_HACK */
+
+	      status = sanei_scsi_cmd (s->fd, read, sizeof (read),
+				       buf + offset, &size);
+
+#ifdef RESERVE_RELEASE_HACK
+	      {
+	      SANE_Status status;
+	      DBG(IO_MESSAGE,"Releasing the SCSI bus.\n");
+	      status=sanei_scsi_cmd (s->fd,release,sizeof(release),0,0);
+	      DBG(IO_MESSAGE,"Releasing... status:= %d\n",status);
+	      }
+#endif /* RESERVE_RELEASE_HACK */
+
+
+	      if (Pseudo8bit)
+		{
+		  SANE_Int byte;
+		  SANE_Int pos = offset + (rread << 1) - 1;
+		  SANE_Byte B;
+		  for (byte = offset + rread - 1; byte >= offset; byte--)
+		    {
+		      B = buf[byte];
+		      buf[pos--] = 255 - (B << 4);   /* low (right) nibble */
+		      buf[pos--] = 255 - (B & 0xF0); /* high (left) nibble */
+		    }
+		  offset += size << 1;
+		}
+	      else
+		offset += size;
+
+	      DBG (IO_MESSAGE, "sane_read: Buffer %u of %u full %g%%\n",
+		   offset, max_len, (double) (offset * 100. / max_len));
+	    }
+	}
+    }
+  while (offset < max_len && data_length != 0 && !s->AbortedByUser);
+
+
+  if (s->AbortedByUser)
+    {
+      s->scanning = SANE_FALSE;
+      status = sanei_scsi_cmd (s->fd, test_unit_ready,
+			       sizeof (test_unit_ready), 0, 0);
+      if (status != SANE_STATUS_GOOD)
+	return status;
+      return SANE_STATUS_CANCELLED;
+    }
+
+  if (!data_length)		/* If not blocked */
+    {
+      s->scanning = SANE_FALSE;
+
+      DBG (IO_MESSAGE, "sane_read: (status) Oups! No more data...");
+      if (!offset)
+	{
+	  *len = 0;
+	  DBG (IO_MESSAGE, "EOF\n");
+	  return SANE_STATUS_EOF;
+	}
+      else
+	{
+	  *len = offset;
+	  DBG (IO_MESSAGE, "GOOD\n");
+	  return SANE_STATUS_GOOD;
+	}
+    }
+
+
+  DBG (FLOW_CONTROL,
+       "sane_read: Normal Exiting (?), Aborted=%u, data_length=%u\n",
+       s->AbortedByUser, data_length);
+  *len = offset;
+
+  return SANE_STATUS_GOOD;
+
+#endif /* NEUTRALIZE_BACKEND */
+}
+
+void
+sane_cancel (SANE_Handle handle)
+{
+  Apple_Scanner *s = handle;
+
+  if (s->scanning)
+    {
+      if (s->AbortedByUser)
+	{
+	  DBG (FLOW_CONTROL,
+	       "sane_cancel: Allready Aborted. Please Wait...\n");
+	}
+      else
+	{
+	  s->scanning=SANE_FALSE;
+	  s->AbortedByUser = SANE_TRUE;
+	  DBG (FLOW_CONTROL, "sane_cancel: Signal Caught! Aborting...\n");
+	}
+    }
+  else
+    {
+      if (s->AbortedByUser)
+	{
+	  DBG (FLOW_CONTROL, "sane_cancel: Scan has not been Initiated yet, "
+	       "or it is allready aborted.\n");
+	  s->AbortedByUser = SANE_FALSE;
+	  sanei_scsi_cmd (s->fd, test_unit_ready,
+				sizeof (test_unit_ready), 0, 0);
+	}
+      else
+	{
+	  DBG (FLOW_CONTROL, "sane_cancel: Scan has not been Initiated "
+	       "yet (or it's over).\n");
+	}
+    }
+
+  return;
+}
+
+SANE_Status
+sane_set_io_mode (SANE_Handle handle, SANE_Bool non_blocking)
+{
+DBG (FLOW_CONTROL,"sane_set_io_mode: Entering.\n");
+
+ handle = handle;				/* silence gcc */
+
+if (non_blocking)
+  {
+  DBG (FLOW_CONTROL, "sane_set_io_mode: Don't call me please. "
+       "Unimplemented function\n");
+  return SANE_STATUS_UNSUPPORTED;
+  }
+
+return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_get_select_fd (SANE_Handle handle, SANE_Int * fd)
+{
+  handle = handle;				/* silence gcc */
+  fd = fd;						/* silence gcc */
+
+  DBG (FLOW_CONTROL, "sane_get_select_fd: Don't call me please. "
+       "Unimplemented function\n");
+  return SANE_STATUS_UNSUPPORTED;
+}