New upstream version 1.0.29upstream/1.0.29

1 files changed, 0 insertions, 2168 deletions

diff --git a/backend/pixma.c b/backend/pixma.c
deleted file mode 100644
index d33a74e..0000000
--- a/backend/pixma.c
+++ /dev/null
@@ -1,2168 +0,0 @@
-/* SANE - Scanner Access Now Easy.
-
-   Copyright (C) 2011-2019 Rolf Bensch <rolf at bensch hyphen online dot de>
-   Copyright (C) 2007-2008 Nicolas Martin, <nicols-guest at alioth dot debian dot org>
-   Copyright (C) 2006-2007 Wittawat Yamwong <wittawat@web.de>
-
-   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.
- */
-#include "../include/sane/config.h"
-
-#include <errno.h>
-#include <string.h>
-#include <stdlib.h>
-#ifdef USE_PTHREAD
-# include <pthread.h>
-#endif
-#include <signal.h>		/* sigaction(POSIX) */
-#include <unistd.h>		/* POSIX: write read close pipe */
-#ifdef HAVE_FCNTL_H
-# include <fcntl.h>
-#endif
-
-#include "pixma_rename.h"
-#include "pixma.h"
-
-# define DEBUG_NOT_STATIC
-# include "../include/sane/sane.h"
-# include "../include/sane/sanei.h"
-# include "../include/sane/saneopts.h"
-# include "../include/sane/sanei_thread.h"
-# include "../include/sane/sanei_backend.h"
-# include "../include/sane/sanei_config.h"
-# include "../include/sane/sanei_jpeg.h"
-
-#ifdef NDEBUG
-# define PDBG(x)
-#else
-#  define PDBG(x) IF_DBG(x)
-#endif /* NDEBUG */
-
-#ifdef __GNUC__
-# define UNUSED(v) (void) v
-#else
-# define UNUSED(v)
-#endif
-
-#define DECL_CTX pixma_sane_t *ss = check_handle(h)
-#define OPT_IN_CTX ss->opt
-#define SOD(opt)  OPT_IN_CTX[opt].sod
-#define OVAL(opt) OPT_IN_CTX[opt].val
-#define AUTO_GAMMA 2.2
-
-/* pixma_sane_options.h generated by
- * scripts/pixma_gen_options.py h < pixma.c > pixma_sane_options.h
- */
-#include "pixma_sane_options.h"
-
-#define BUTTON_GROUP_SIZE ( opt_scan_resolution - opt_button_1 + 1 )
-#define BUTTON_GROUP_INDEX(x) ( x - opt_button_1 )
-
-typedef struct pixma_sane_t
-{
-  struct pixma_sane_t *next;
-  pixma_t *s;
-  pixma_scan_param_t sp;
-  SANE_Bool cancel;
-
-  /* valid states: idle, !idle && scanning, !idle && !scanning */
-  SANE_Bool idle;
-  SANE_Bool scanning;
-  SANE_Status last_read_status;	/* valid if !idle && !scanning */
-
-  option_descriptor_t opt[opt_last];
-  char button_option_is_cached[BUTTON_GROUP_SIZE];
-  SANE_Range xrange, yrange;
-  SANE_Word dpi_list[9];	/* up to 9600 dpi */
-  SANE_String_Const mode_list[6];
-  pixma_scan_mode_t mode_map[6];
-  uint8_t gamma_table[4096];
-  SANE_String_Const source_list[4];
-  pixma_paper_source_t source_map[4];
-
-  unsigned byte_pos_in_line, output_line_size;
-  uint64_t image_bytes_read;
-  unsigned page_count;		/* valid for ADF */
-
-  SANE_Pid reader_taskid;
-  int wpipe, rpipe;
-  SANE_Bool reader_stop;
-
-  /* Valid for JPEG source */
-  djpeg_dest_ptr jdst;
-  struct jpeg_decompress_struct jpeg_cinfo;
-  struct jpeg_error_mgr jpeg_err;
-  SANE_Bool jpeg_header_seen;
-} pixma_sane_t;
-
-typedef struct
-{
-  struct jpeg_source_mgr jpeg;
-
-  pixma_sane_t *s;
-  JOCTET *buffer;
-
-  SANE_Byte *linebuffer;
-  SANE_Int linebuffer_size;
-  SANE_Int linebuffer_index;
-} pixma_jpeg_src_mgr;
-
-
-static const char vendor_str[] = "CANON";
-static const char type_str[] = "multi-function peripheral";
-
-static pixma_sane_t *first_scanner = NULL;
-static const SANE_Device **dev_list = NULL;
-static const char* conf_devices[MAX_CONF_DEVICES];
-
-static void mark_all_button_options_cached ( struct pixma_sane_t * ss )
-{
-  int i;
-  for (i = 0; i < (opt__group_5 - opt_button_1); i++ )
-      ss -> button_option_is_cached[i] = 1;
-}
-
-static SANE_Status config_attach_pixma(SANEI_Config * config, const char *devname)
-{
-  int i;
-  UNUSED(config);
-  for (i=0; i < (MAX_CONF_DEVICES -1); i++)
-    {
-      if(conf_devices[i] == NULL)
-        {
-          conf_devices[i] = strdup(devname);
-          return SANE_STATUS_GOOD;
-        }
-    }
-  return SANE_STATUS_INVAL;
-}
-
-static SANE_Status
-map_error (int error)
-{
-  if (error >= 0)
-    return SANE_STATUS_GOOD;
-
-  switch (error)
-    {
-    case PIXMA_ENOMEM:
-      return SANE_STATUS_NO_MEM;
-    case PIXMA_ECANCELED:
-      return SANE_STATUS_CANCELLED;
-    case PIXMA_EBUSY:
-      return SANE_STATUS_DEVICE_BUSY;
-    case PIXMA_EINVAL:
-      return SANE_STATUS_INVAL;
-    case PIXMA_EACCES:
-      return SANE_STATUS_ACCESS_DENIED;
-    case PIXMA_EPAPER_JAMMED:
-      return SANE_STATUS_JAMMED;
-    case PIXMA_ENO_PAPER:
-      return SANE_STATUS_NO_DOCS;
-    case PIXMA_ECOVER_OPEN:
-      return SANE_STATUS_COVER_OPEN;
-    case PIXMA_ENOTSUP:
-      return SANE_STATUS_UNSUPPORTED;
-    case PIXMA_EPROTO:
-    case PIXMA_ENODEV:
-    case PIXMA_EIO:
-    case PIXMA_ETIMEDOUT:
-      return SANE_STATUS_IO_ERROR;
-    }
-  PDBG (pixma_dbg (1, "BUG: unmapped error %d\n", error));
-  return SANE_STATUS_IO_ERROR;
-}
-
-static int
-getenv_atoi (const char *name, int def)
-{
-  const char *str = getenv (name);
-  return (str) ? atoi (str) : def;
-}
-
-#define CONST_CAST(t,x) (t)(x)
-
-static void
-free_block (const void * ptr)
-{
-  free (CONST_CAST (void *, ptr));
-}
-
-static void
-cleanup_device_list (void)
-{
-  if (dev_list)
-    {
-      int i;
-      for (i = 0; dev_list[i]; i++)
-        {
-          free_block ((const void *) dev_list[i]->name);
-          free_block ((const void *) dev_list[i]->model);
-          free_block ((const void *) dev_list[i]);
-        }
-    }
-  free (dev_list);
-  dev_list = NULL;
-}
-
-static void
-find_scanners (void)
-{
-  unsigned i, nscanners;
-
-  cleanup_device_list ();
-  nscanners = pixma_find_scanners (conf_devices);
-  PDBG (pixma_dbg (3, "pixma_find_scanners() found %u devices\n", nscanners));
-  dev_list =
-    (const SANE_Device **) calloc (nscanners + 1, sizeof (*dev_list));
-  if (!dev_list)
-    return;
-  for (i = 0; i != nscanners; i++)
-    {
-      SANE_Device *sdev = (SANE_Device *) calloc (1, sizeof (*sdev));
-      char *name, *model;
-      if (!sdev)
-        goto nomem;
-      name = strdup (pixma_get_device_id (i));
-      model = strdup (pixma_get_device_model (i));
-      if (!name || !model)
-        {
-          free (name);
-          free (model);
-          free (sdev);
-          goto nomem;
-        }
-      sdev->name = name;
-      sdev->model = model;
-      sdev->vendor = vendor_str;
-      sdev->type = type_str;
-      dev_list[i] = sdev;
-    }
-  /* dev_list is already NULL terminated by calloc(). */
-  return;
-
-nomem:
-  PDBG (pixma_dbg (1, "WARNING:not enough memory for device list\n"));
-  return;
-}
-
-static pixma_sane_t *
-check_handle (SANE_Handle h)
-{
-  pixma_sane_t *p;
-
-  for (p = first_scanner; p && (SANE_Handle) p != h; p = p->next)
-    {
-    }
-  return p;
-}
-
-static void
-update_button_state (pixma_sane_t * ss, SANE_Int * info)
-{
-  SANE_Int b1 = OVAL (opt_button_1).w;
-  SANE_Int b2 = OVAL (opt_button_2).w;
-  uint32_t ev = pixma_wait_event (ss->s, 300);
-  switch (ev & ~PIXMA_EV_ACTION_MASK)
-    {
-    case PIXMA_EV_BUTTON1:
-      b1 = 1;
-      break;
-    case PIXMA_EV_BUTTON2:
-      b2 = 1;
-      break;
-    }
-
-  if (b1 != OVAL (opt_button_1).w || b2 != OVAL (opt_button_2).w)
-    {
-    *info |= SANE_INFO_RELOAD_OPTIONS;
-    OVAL (opt_button_1).w = b1;
-    OVAL (opt_button_2).w = b2;
-    OVAL (opt_original).w = GET_EV_ORIGINAL(ev);
-    OVAL (opt_target).w = GET_EV_TARGET(ev);
-    OVAL (opt_scan_resolution).w = GET_EV_DPI(ev);
-    }
-  mark_all_button_options_cached(ss);
-}
-
-static SANE_Bool
-enable_option (pixma_sane_t * ss, SANE_Int o, SANE_Bool enable)
-{
-  SANE_Word save = SOD (o).cap;
-  if (enable)
-    SOD (o).cap &= ~SANE_CAP_INACTIVE;
-  else
-    SOD (o).cap |= SANE_CAP_INACTIVE;
-  return (save != SOD (o).cap);
-}
-
-static void
-clamp_value (pixma_sane_t * ss, SANE_Int n, void *v, SANE_Int * info)
-{
-  SANE_Option_Descriptor *sod = &SOD (n);
-  SANE_Word *va = (SANE_Word *) v;
-  const SANE_Range *range = sod->constraint.range;
-  int i, nmemb;
-
-  nmemb = sod->size / sizeof (SANE_Word);
-  for (i = 0; i < nmemb; i++)
-    {
-      SANE_Word value = va[i];
-      if (value < range->min)
-        {
-          value = range->min;
-        }
-      else if (value > range->max)
-        {
-          value = range->max;
-        }
-      if (range->quant != 0)
-        {
-          value = (value - range->min + range->quant / 2) /
-            range->quant * range->quant;
-        }
-      if (value != va[i])
-        {
-          va[i] = value;
-          *info |= SANE_INFO_INEXACT;
-        }
-    }
-}
-
-/* create dynamic mode_list
- * ss:      scanner device
- * tpu = 0: flatbed or ADF mode
- *          1 bit lineart, 8 bit grayscale and 24 bit color scans
- * tpu = 1: TPU mode
- *          16 bit grayscale and 48 bit color scans */
-static void
-create_mode_list (pixma_sane_t * ss)
-{
-  SANE_Bool tpu;
-  const pixma_config_t *cfg;
-  int i;
-
-  cfg = pixma_get_config (ss->s);
-  tpu = (ss->source_map[OVAL (opt_source).w] == PIXMA_SOURCE_TPU);
-
-  /* setup available mode */
-  i = 0;
-  ss->mode_list[i] = SANE_VALUE_SCAN_MODE_COLOR;
-  ss->mode_map[i] = PIXMA_SCAN_MODE_COLOR;
-  i++;
-  if (cfg->cap & PIXMA_CAP_GRAY)
-    {
-      ss->mode_list[i] = SANE_VALUE_SCAN_MODE_GRAY;
-      ss->mode_map[i] = PIXMA_SCAN_MODE_GRAY;
-      i++;
-    }
-  if (tpu && (cfg->cap & PIXMA_CAP_NEGATIVE))
-    {
-      ss->mode_list[i] = SANE_I18N ("Negative color");
-      ss->mode_map[i] = PIXMA_SCAN_MODE_NEGATIVE_COLOR;
-      i++;
-      if (cfg->cap & PIXMA_CAP_GRAY)
-        {
-          ss->mode_list[i] = SANE_I18N ("Negative gray");
-          ss->mode_map[i] = PIXMA_SCAN_MODE_NEGATIVE_GRAY;
-          i++;
-        }
-    }
-  if (tpu && (cfg->cap & PIXMA_CAP_TPUIR) == PIXMA_CAP_TPUIR)
-    {
-      ss->mode_list[i] = SANE_I18N ("Infrared");
-      ss->mode_map[i] = PIXMA_SCAN_MODE_TPUIR;
-      i++;
-    }
-  if (!tpu && (cfg->cap & PIXMA_CAP_48BIT))
-    {
-      ss->mode_list[i] = SANE_I18N ("48 bits color");
-      ss->mode_map[i] = PIXMA_SCAN_MODE_COLOR_48;
-      i++;
-      if (cfg->cap & PIXMA_CAP_GRAY)
-        {
-          ss->mode_list[i] = SANE_I18N ("16 bits gray");
-          ss->mode_map[i] = PIXMA_SCAN_MODE_GRAY_16;
-          i++;
-        }
-    }
-  if (!tpu && (cfg->cap & PIXMA_CAP_LINEART))
-    {
-      ss->mode_list[i] = SANE_VALUE_SCAN_MODE_LINEART;
-      ss->mode_map[i] = PIXMA_SCAN_MODE_LINEART;
-      i++;
-    }
-  /* terminate mode_list and mode_map */
-  ss->mode_list[i] = 0;
-  ss->mode_map[i] = 0;
-}
-
-/* create dynamic dpi_list
- * ss: scanner device */
-static void
-create_dpi_list (pixma_sane_t * ss)
-{
-  const pixma_config_t *cfg;
-  int i, j;
-  int min;
-  unsigned min_dpi;
-  unsigned max_dpi;
-
-  cfg = pixma_get_config (ss->s);
-
-  /* get min/max dpi */
-  max_dpi = cfg->xdpi;
-  min_dpi = 75;
-  if (ss->source_map[OVAL (opt_source).w] == PIXMA_SOURCE_TPU
-      && ss->mode_map[OVAL (opt_mode).w] == PIXMA_SCAN_MODE_TPUIR)
-  { /* IR mode */
-    /*PDBG (pixma_dbg (4, "*create_dpi_list***** TPUIR mode\n"));*/
-    min_dpi = (cfg->tpuir_min_dpi) ? cfg->tpuir_min_dpi : 75;
-    max_dpi = (cfg->tpuir_max_dpi) ? cfg->tpuir_max_dpi : cfg->xdpi;
-  }
-  else if (ss->source_map[OVAL (opt_source).w] == PIXMA_SOURCE_TPU
-            || ss->source_map[OVAL (opt_source).w] == PIXMA_SOURCE_ADF
-            || ss->source_map[OVAL (opt_source).w] == PIXMA_SOURCE_ADFDUP)
-  { /* ADF / TPU mode */
-    /*PDBG (pixma_dbg (4, "*create_dpi_list***** ADF/TPU mode\n"));*/
-    min_dpi = (cfg->adftpu_min_dpi) ? cfg->adftpu_min_dpi : 75;
-    max_dpi = (cfg->adftpu_max_dpi) ? cfg->adftpu_max_dpi : cfg->xdpi;
-  }
-  else if (ss->source_map[OVAL (opt_source).w] == PIXMA_SOURCE_FLATBED
-            && (ss->mode_map[OVAL (opt_mode).w] == PIXMA_SCAN_MODE_COLOR_48
-                || ss->mode_map[OVAL (opt_mode).w] == PIXMA_SCAN_MODE_GRAY_16))
-  { /* 48 bits flatbed */
-    /*PDBG (pixma_dbg (4, "*create_dpi_list***** 48 bits flatbed mode\n"));*/
-    min_dpi = 150;
-  }
-
-  /* set j for min. dpi
-   *  75 dpi: j = 0
-   * 150 dpi: j = 1 \
-   * 300 dpi: j = 2 |--> from cfg->adftpu_min_dpi or cfg->tpuir_min_dpi
-   * 600 dpi: j = 3 /
-   * */
-  j = -1;
-  min = min_dpi / 75;
-  do
-  {
-    j++;
-    min >>= 1;
-  }
-  while (min > 0);
-
-  /* create dpi_list
-   * use j for min. dpi */
-  i = 0;
-  do
-    {
-      i++; j++;
-      ss->dpi_list[i] = 75 * (1 << (j - 1));    /* 75 x 2^(j-1) */
-    }
-  while ((unsigned) ss->dpi_list[i] < max_dpi);
-  ss->dpi_list[0] = i;
-  /*PDBG (pixma_dbg (4, "*create_dpi_list***** min_dpi = %d, max_dpi = %d\n", min_dpi, max_dpi));*/
-}
-
-static void
-select_value_from_list (pixma_sane_t * ss, SANE_Int n, void *v,
-			SANE_Int * info)
-{
-  SANE_Option_Descriptor *sod = &SOD (n);
-  SANE_Word *va = (SANE_Word *) v;
-  const SANE_Word *list = sod->constraint.word_list;
-  int i, j, nmemb;
-
-  nmemb = sod->size / sizeof (SANE_Word);
-  for (i = 0; i < nmemb; i++)
-    {
-      SANE_Word value = va[i];
-      SANE_Word mindelta = abs (value - list[1]);
-      SANE_Word nearest = list[1];
-      for (j = 2; j <= list[0]; j++)
-        {
-          SANE_Word delta = abs (value - list[j]);
-          if (delta < mindelta)
-            {
-              mindelta = delta;
-              nearest = list[j];
-            }
-          if (mindelta == 0)
-            break;
-        }
-      if (va[i] != nearest)
-        {
-          va[i] = nearest;
-          *info |= SANE_INFO_INEXACT;
-        }
-    }
-}
-
-static SANE_Status
-control_scalar_option (pixma_sane_t * ss, SANE_Int n, SANE_Action a, void *v,
-		       SANE_Int * info)
-{
-  option_descriptor_t *opt = &(OPT_IN_CTX[n]);
-  SANE_Word val;
-
-  switch (a)
-    {
-    case SANE_ACTION_GET_VALUE:
-      switch (opt->sod.type)
-        {
-        case SANE_TYPE_BOOL:
-        case SANE_TYPE_INT:
-        case SANE_TYPE_FIXED:
-          *(SANE_Word *) v = opt->val.w;
-          break;
-        default:
-          return SANE_STATUS_UNSUPPORTED;
-        }
-      return SANE_STATUS_GOOD;
-
-    case SANE_ACTION_SET_VALUE:
-      switch (opt->sod.type)
-        {
-        case SANE_TYPE_BOOL:
-          val = *(SANE_Word *) v;
-          if (val != SANE_TRUE && val != SANE_FALSE)
-            return SANE_STATUS_INVAL;
-          opt->val.w = val;
-          break;
-        case SANE_TYPE_INT:
-        case SANE_TYPE_FIXED:
-          if (opt->sod.constraint_type == SANE_CONSTRAINT_RANGE)
-            clamp_value (ss, n, v, info);
-          else if (opt->sod.constraint_type == SANE_CONSTRAINT_WORD_LIST)
-            select_value_from_list (ss, n, v, info);
-          opt->val.w = *(SANE_Word *) v;
-          break;
-        default:
-          return SANE_STATUS_UNSUPPORTED;
-        }
-      *info |= opt->info;
-      return SANE_STATUS_GOOD;
-
-    case SANE_ACTION_SET_AUTO:
-      switch (opt->sod.type)
-        {
-        case SANE_TYPE_BOOL:
-        case SANE_TYPE_INT:
-        case SANE_TYPE_FIXED:
-          opt->val.w = opt->def.w;
-          break;
-        default:
-          return SANE_STATUS_UNSUPPORTED;
-        }
-      *info |= opt->info;
-      return SANE_STATUS_GOOD;
-    }
-  return SANE_STATUS_UNSUPPORTED;
-}
-
-static SANE_Status
-control_string_option (pixma_sane_t * ss, SANE_Int n, SANE_Action a, void *v,
-		       SANE_Int * info)
-{
-  option_descriptor_t *opt = &(OPT_IN_CTX[n]);
-  const SANE_String_Const *slist = opt->sod.constraint.string_list;
-  SANE_String str = (SANE_String) v;
-
-  if (opt->sod.constraint_type == SANE_CONSTRAINT_NONE)
-    {
-      switch (a)
-        {
-        case SANE_ACTION_GET_VALUE:
-          strcpy (str, opt->val.s);
-          break;
-        case SANE_ACTION_SET_AUTO:
-          str = opt->def.s;
-          /* fall through */
-        case SANE_ACTION_SET_VALUE:
-          strncpy (opt->val.s, str, opt->sod.size - 1);
-          *info |= opt->info;
-          break;
-        }
-      return SANE_STATUS_GOOD;
-    }
-  else
-    {
-      int i;
-
-      switch (a)
-        {
-        case SANE_ACTION_GET_VALUE:
-          strcpy (str, slist[opt->val.w]);
-          break;
-        case SANE_ACTION_SET_AUTO:
-          str = opt->def.ptr;
-          /* fall through */
-        case SANE_ACTION_SET_VALUE:
-          i = 0;
-          while (slist[i] && strcasecmp (str, slist[i]) != 0)
-            i++;
-          if (!slist[i])
-            return SANE_STATUS_INVAL;
-          if (strcmp (slist[i], str) != 0)
-            {
-              strcpy (str, slist[i]);
-              *info |= SANE_INFO_INEXACT;
-            }
-          opt->val.w = i;
-          *info |= opt->info;
-          break;
-        }
-      return SANE_STATUS_GOOD;
-    }
-}
-
-static SANE_Status
-control_option (pixma_sane_t * ss, SANE_Int n,
-		SANE_Action a, void *v, SANE_Int * info)
-{
-  int result, i;
-  const pixma_config_t *cfg;
-  SANE_Int dummy;
-
-  /* info may be null, better to set a dummy here then test everywhere */
-  if (info == NULL)
-    info = &dummy;
-
-  cfg = pixma_get_config (ss->s);
-
-  /* PDBG (pixma_dbg (4, "*control_option***** n = %u, a = %u\n", n, a)); */
-
-  /* first deal with options that require special treatment */
-  result = SANE_STATUS_UNSUPPORTED;
-  switch (n)
-    {
-      case opt_gamma_table:
-        switch (a)
-          {
-          case SANE_ACTION_SET_VALUE:
-            clamp_value (ss, n, v, info);
-            for (i = 0; i != 4096; i++)
-              ss->gamma_table[i] = *((SANE_Int *) v + i);
-            break;
-          case SANE_ACTION_GET_VALUE:
-            for (i = 0; i != 4096; i++)
-              *((SANE_Int *) v + i) = ss->gamma_table[i];
-            break;
-          case SANE_ACTION_SET_AUTO:
-            pixma_fill_gamma_table (AUTO_GAMMA, ss->gamma_table,
-                  sizeof (ss->gamma_table));
-            break;
-          default:
-            return SANE_STATUS_UNSUPPORTED;
-          }
-        return SANE_STATUS_GOOD;
-
-      case opt_button_update:
-        if (a == SANE_ACTION_SET_VALUE)
-          {
-            update_button_state (ss, info);
-            return SANE_STATUS_GOOD;
-          }
-        else
-          {
-            return SANE_STATUS_INVAL;
-          }
-        break;
-      case opt_button_1:
-      case opt_button_2:
-      case opt_original:
-      case opt_target:
-      case opt_scan_resolution:
-        /* poll scanner if option is not cached */
-        if (! ss->button_option_is_cached[ BUTTON_GROUP_INDEX(n) ] )
-          update_button_state (ss, info);
-        /* mark this option as read */
-        ss->button_option_is_cached[  BUTTON_GROUP_INDEX(n) ] = 0;
-    }
-
-  /* now deal with getting and setting of options */
-  switch (SOD (n).type)
-    {
-    case SANE_TYPE_BOOL:
-    case SANE_TYPE_INT:
-    case SANE_TYPE_FIXED:
-      result = control_scalar_option (ss, n, a, v, info);
-      break;
-    case SANE_TYPE_STRING:
-      result = control_string_option (ss, n, a, v, info);
-      break;
-    case SANE_TYPE_BUTTON:
-    case SANE_TYPE_GROUP:
-      PDBG (pixma_dbg (1, "BUG:control_option():Unhandled option\n"));
-      result = SANE_STATUS_INVAL;
-      break;
-    }
-  if (result != SANE_STATUS_GOOD)
-    return result;
-
-  /* deal with dependencies between options */
-  switch (n)
-    {
-    case opt_custom_gamma:
-      if (a == SANE_ACTION_SET_VALUE || a == SANE_ACTION_SET_AUTO)
-        {
-          if (enable_option (ss, opt_gamma_table, OVAL (opt_custom_gamma).b))
-            *info |= SANE_INFO_RELOAD_OPTIONS;
-        }
-      break;
-    case opt_gamma:
-      if (a == SANE_ACTION_SET_VALUE || a == SANE_ACTION_SET_AUTO)
-        {
-          /* PDBG (pixma_dbg (4, "*control_option***** gamma = %f *\n",
-                           SANE_UNFIX (OVAL (opt_gamma).w))); */
-          pixma_fill_gamma_table (SANE_UNFIX (OVAL (opt_gamma).w),
-                                  ss->gamma_table, sizeof (ss->gamma_table));
-        }
-      break;
-    case opt_mode:
-      if (cfg->cap & (PIXMA_CAP_48BIT|PIXMA_CAP_LINEART|PIXMA_CAP_TPUIR)
-          && (a == SANE_ACTION_SET_VALUE || a == SANE_ACTION_SET_AUTO))
-        { /* new mode selected: Color, Gray, ... */
-          /* PDBG (pixma_dbg (4, "*control_option***** mode = %u *\n",
-                           ss->mode_map[OVAL (opt_mode).w])); */
-          /* recreate dynamic lists */
-          create_dpi_list (ss);
-          if (ss->mode_map[OVAL (opt_mode).w] == PIXMA_SCAN_MODE_LINEART)
-            { /* lineart */
-              enable_option (ss, opt_threshold, SANE_TRUE);
-              enable_option (ss, opt_threshold_curve, SANE_TRUE);
-            }
-          else
-            { /* all other modes */
-              enable_option (ss, opt_threshold, SANE_FALSE);
-              enable_option (ss, opt_threshold_curve, SANE_FALSE);
-            }
-          *info |= SANE_INFO_RELOAD_OPTIONS;
-        }
-      break;
-    case opt_source:
-      if ((cfg->cap & (PIXMA_CAP_ADF|PIXMA_CAP_ADFDUP|PIXMA_CAP_TPU))
-          && (a == SANE_ACTION_SET_VALUE || a == SANE_ACTION_SET_AUTO))
-        { /* new source selected: flatbed, ADF, TPU, ... */
-          /* to avoid fatal errors,
-           * select first entry of dynamic mode_list
-           * identifiers are unknown here */
-          OVAL (opt_mode).w = ss->mode_map[0];
-          /* recreate dynamic lists */
-          create_mode_list (ss);
-          create_dpi_list (ss);
-          /* to avoid fatal errors,
-           * select first entry of dynamic dpi_list
-           * identifiers are unknown here */
-          OVAL (opt_resolution).w = ss->dpi_list[1];
-          if (ss->mode_map[OVAL (opt_mode).w] == PIXMA_SCAN_MODE_LINEART)
-            { /* lineart */
-              enable_option (ss, opt_threshold, SANE_TRUE);
-              enable_option (ss, opt_threshold_curve, SANE_TRUE);
-            }
-          else
-            { /* all other modes */
-              enable_option (ss, opt_threshold, SANE_FALSE);
-              enable_option (ss, opt_threshold_curve, SANE_FALSE);
-            }
-          if (cfg->cap & (PIXMA_CAP_ADF_WAIT))
-            { /* adf-wait */
-              enable_option (ss, opt_adf_wait, SANE_TRUE);
-            }
-          else
-            { /* disable adf-wait */
-              enable_option (ss, opt_adf_wait, SANE_FALSE);
-            }
-          *info |= SANE_INFO_RELOAD_OPTIONS;
-        }
-      break;
-    }
-
-  return result;
-}
-
-#ifndef NDEBUG
-static void
-print_scan_param (int level, const pixma_scan_param_t * sp)
-{
-  pixma_dbg (level, "Scan parameters\n");
-  pixma_dbg (level, "  line_size=%"PRIu64" image_size=%"PRIu64" channels=%u depth=%u\n",
-	     sp->line_size, sp->image_size, sp->channels, sp->depth);
-  pixma_dbg (level, "  dpi=%ux%u offset=(%u,%u) dimension=%ux%u\n",
-	     sp->xdpi, sp->ydpi, sp->x, sp->y, sp->w, sp->h);
-  pixma_dbg (level, "  gamma_table=%p source=%d\n", sp->gamma_table,
-	     sp->source);
-  pixma_dbg (level, "  adf-wait=%d\n", sp->adf_wait);
-}
-#endif
-
-static int
-calc_scan_param (pixma_sane_t * ss, pixma_scan_param_t * sp)
-{
-  int x1, y1, x2, y2;
-  int error;
-
-  memset (sp, 0, sizeof (*sp));
-
-  sp->channels = (OVAL (opt_mode).w == 0) ? 3 : 1;
-  sp->depth = (OVAL (opt_mode).w == 2) ? 1 : 8;
-  sp->xdpi = sp->ydpi = OVAL (opt_resolution).w;
-
-#define PIXEL(x,dpi) (int)((SANE_UNFIX(x) / 25.4 * (dpi)) + 0.5)
-  x1 = PIXEL (OVAL (opt_tl_x).w, sp->xdpi);
-  x2 = PIXEL (OVAL (opt_br_x).w, sp->xdpi);
-  if (x2 < x1)
-    {
-      int temp = x1;
-      x1 = x2;
-      x2 = temp;
-    }
-  y1 = PIXEL (OVAL (opt_tl_y).w, sp->ydpi);
-  y2 = PIXEL (OVAL (opt_br_y).w, sp->ydpi);
-  if (y2 < y1)
-    {
-      int temp = y1;
-      y1 = y2;
-      y2 = temp;
-    }
-#undef PIXEL
-  sp->x = x1;
-  sp->y = y1;
-  sp->w = x2 - x1;
-  sp->h = y2 - y1;
-  if (sp->w == 0)
-    sp->w = 1;
-  if (sp->h == 0)
-    sp->h = 1;
-  sp->tpu_offset_added = 0;
-
-  sp->gamma_table = (OVAL (opt_custom_gamma).b) ? ss->gamma_table : NULL;
-  sp->source = ss->source_map[OVAL (opt_source).w];
-  sp->mode = ss->mode_map[OVAL (opt_mode).w];
-  sp->adf_pageid = ss->page_count;
-  sp->threshold = 2.55 * OVAL (opt_threshold).w;
-  sp->threshold_curve = OVAL (opt_threshold_curve).w;
-  sp->adf_wait = OVAL (opt_adf_wait).w;
-
-  error = pixma_check_scan_param (ss->s, sp);
-  if (error < 0)
-    {
-      PDBG (pixma_dbg (1, "BUG:calc_scan_param() failed %d\n", error));
-      PDBG (print_scan_param (1, sp));
-    }
-  return error;
-}
-
-static void
-init_option_descriptors (pixma_sane_t * ss)
-{
-  const pixma_config_t *cfg;
-  int i;
-
-  cfg = pixma_get_config (ss->s);
-
-  /* setup range for the scan area. */
-  ss->xrange.min = SANE_FIX (0);
-  ss->xrange.max = SANE_FIX (cfg->width / 75.0 * 25.4);
-  ss->xrange.quant = SANE_FIX (0);
-
-  ss->yrange.min = SANE_FIX (0);
-  ss->yrange.max = SANE_FIX (cfg->height / 75.0 * 25.4);
-  ss->yrange.quant = SANE_FIX (0);
-
-  /* mode_list and source_list were already NULL-terminated,
-   * because the whole pixma_sane_t was cleared during allocation. */
-
-  /* setup available mode. */
-  create_mode_list (ss);
-
-  /* setup dpi up to the value supported by the scanner. */
-  create_dpi_list (ss);
-
-  /* setup paper source */
-  i = 0;
-  ss->source_list[i] = SANE_I18N ("Flatbed");
-  ss->source_map[i] = PIXMA_SOURCE_FLATBED;
-  i++;
-  if (cfg->cap & PIXMA_CAP_ADF)
-    {
-      ss->source_list[i] = SANE_I18N ("Automatic Document Feeder");
-      ss->source_map[i] = PIXMA_SOURCE_ADF;
-      i++;
-    }
-  if ((cfg->cap & PIXMA_CAP_ADFDUP) == PIXMA_CAP_ADFDUP)
-    {
-      ss->source_list[i] = SANE_I18N ("ADF Duplex");
-      ss->source_map[i] = PIXMA_SOURCE_ADFDUP;
-      i++;
-    }
-  if (cfg->cap & PIXMA_CAP_TPU)
-    {
-      ss->source_list[i] = SANE_I18N ("Transparency Unit");
-      ss->source_map[i] = PIXMA_SOURCE_TPU;
-      i++;
-    }
-
-  build_option_descriptors (ss);
-
-  /* Enable options that are available only in some scanners. */
-  if (cfg->cap & PIXMA_CAP_GAMMA_TABLE)
-    {
-      enable_option (ss, opt_gamma, SANE_TRUE);
-      enable_option (ss, opt_custom_gamma, SANE_TRUE);
-      sane_control_option (ss, opt_custom_gamma, SANE_ACTION_SET_AUTO,
-			   NULL, NULL);
-      pixma_fill_gamma_table (AUTO_GAMMA, ss->gamma_table, 4096);
-    }
-  enable_option (ss, opt_button_controlled,
-		 ((cfg->cap & PIXMA_CAP_EVENTS) != 0));
-}
-
-/* Writing to reader_ss outside reader_process() is a BUG! */
-static pixma_sane_t *reader_ss = NULL;
-
-static void
-reader_signal_handler (int sig)
-{
-  if (reader_ss)
-    {
-      reader_ss->reader_stop = SANE_TRUE;
-      /* reader process is ended by SIGTERM, so no cancel in this case */
-      if (sig != SIGTERM)
-        pixma_cancel (reader_ss->s);
-    }
-}
-
-static int
-write_all (pixma_sane_t * ss, void *buf_, size_t size)
-{
-  uint8_t *buf = (uint8_t *) buf_;
-  int count;
-
-  while (size != 0 && !ss->reader_stop)
-    {
-      count = write (ss->wpipe, buf, size);
-      if (count == -1 && errno != EINTR)
-	break;
-      if (count == -1 && errno == EINTR)
-	continue;
-      buf += count;
-      size -= count;
-    }
-  return buf - (uint8_t *) buf_;
-}
-
-/* NOTE: reader_loop() runs either in a separate thread or process. */
-static SANE_Status
-reader_loop (pixma_sane_t * ss)
-{
-  void *buf;
-  unsigned bufsize;
-  int count = 0;
-
-  PDBG (pixma_dbg (3, "Reader task started\n"));
-  /*bufsize = ss->sp.line_size + 1;*/	/* XXX: "odd" bufsize for testing pixma_read_image() */
-  bufsize = ss->sp.line_size;   /* bufsize EVEN needed by Xsane for 48 bits depth */
-  buf = malloc (bufsize);
-  if (!buf)
-    {
-      count = PIXMA_ENOMEM;
-      goto done;
-    }
-
-  count = pixma_activate_connection (ss->s);
-  if (count < 0)
-    goto done;
-
-  pixma_enable_background (ss->s, 1);
-  if (OVAL (opt_button_controlled).b && ss->page_count == 0)
-    {
-      int start = 0;
-#ifndef NDEBUG
-      pixma_dbg (1, "==== Button-controlled scan mode is enabled.\n");
-      pixma_dbg (1, "==== To proceed, press 'SCAN' or 'COLOR' button. "
-		 "To cancel, press 'GRAY' or 'END' button.\n");
-#endif
-      while (pixma_wait_event (ss->s, 10) != 0)
-        {
-        }
-      while (!start)
-        {
-          uint32_t events;
-          if (ss->reader_stop)
-            {
-              count = PIXMA_ECANCELED;
-              goto done;
-            }
-          events = pixma_wait_event (ss->s, 1000);
-          switch (events & ~PIXMA_EV_ACTION_MASK)
-            {
-            case PIXMA_EV_BUTTON1:
-              start = 1;
-              break;
-            case PIXMA_EV_BUTTON2:
-              count = PIXMA_ECANCELED;
-              goto done;
-            }
-        }
-    }
-  count = pixma_scan (ss->s, &ss->sp);
-  if (count >= 0)
-    {
-      while ((count = pixma_read_image (ss->s, buf, bufsize)) > 0)
-        {
-          if (write_all (ss, buf, count) != count)
-            pixma_cancel (ss->s);
-        }
-    }
-
-done:
-  pixma_enable_background (ss->s, 0);
-  pixma_deactivate_connection (ss->s);
-  free (buf);
-  close (ss->wpipe);
-  ss->wpipe = -1;
-  if (count >= 0)
-    {
-      PDBG (pixma_dbg (3, "Reader task terminated\n"));
-    }
-  else
-    {
-      PDBG (pixma_dbg
-	    (2, "Reader task terminated: %s\n", pixma_strerror (count)));
-    }
-  return map_error (count);
-}
-
-static int
-reader_process (void *arg)
-{
-  pixma_sane_t *ss = (pixma_sane_t *) arg;
-  struct SIGACTION sa;
-
-  reader_ss = ss;
-  memset (&sa, 0, sizeof (sa));
-  sigemptyset (&sa.sa_mask);
-  sa.sa_handler = reader_signal_handler;
-  /* FIXME: which signal else? */
-  sigaction (SIGHUP, &sa, NULL);
-  sigaction (SIGINT, &sa, NULL);
-  sigaction (SIGPIPE, &sa, NULL);
-  sigaction (SIGTERM, &sa, NULL);
-  close (ss->rpipe);
-  ss->rpipe = -1;
-  return reader_loop (ss);
-}
-
-static int
-reader_thread (void *arg)
-{
-  pixma_sane_t *ss = (pixma_sane_t *) arg;
-#ifdef USE_PTHREAD
-  /* Block SIGPIPE. We will handle this in reader_loop() by checking
-     ss->reader_stop and the return value from write(). */
-  sigset_t sigs;
-  sigemptyset (&sigs);
-  sigaddset (&sigs, SIGPIPE);
-  pthread_sigmask (SIG_BLOCK, &sigs, NULL);
-#endif /* USE_PTHREAD */
-  return reader_loop (ss);
-}
-
-static SANE_Pid
-terminate_reader_task (pixma_sane_t * ss, int *exit_code)
-{
-  SANE_Pid result, pid;
-  int status = 0;
-
-  pid = ss->reader_taskid;
-  if (!sanei_thread_is_valid (pid))
-    return pid;
-  if (sanei_thread_is_forked ())
-    {
-      sanei_thread_kill (pid);
-    }
-  else
-    {
-      ss->reader_stop = SANE_TRUE;
-/*      pixma_cancel (ss->s);   What is this for ? Makes end-of-scan buggy => removing */
-    }
-  result = sanei_thread_waitpid (pid, &status);
-  sanei_thread_invalidate (ss->reader_taskid);
-
-  if (ss->sp.source != PIXMA_SOURCE_ADF && ss->sp.source != PIXMA_SOURCE_ADFDUP)
-    ss->idle = SANE_TRUE;
-
-  if (result == pid)
-    {
-      if (exit_code)
-	      *exit_code = status;
-      return pid;
-    }
-  else
-    {
-      PDBG (pixma_dbg (1, "WARNING:waitpid() failed %s\n", strerror (errno)));
-      sanei_thread_invalidate (pid);
-      return pid;
-    }
-}
-
-static int
-start_reader_task (pixma_sane_t * ss)
-{
-  int fds[2];
-  SANE_Pid pid;
-  int is_forked;
-
-  if (ss->rpipe != -1 || ss->wpipe != -1)
-    {
-      PDBG (pixma_dbg
-	    (1, "BUG:rpipe = %d, wpipe = %d\n", ss->rpipe, ss->wpipe));
-      close (ss->rpipe);
-      close (ss->wpipe);
-      ss->rpipe = -1;
-      ss->wpipe = -1;
-    }
-  if (sanei_thread_is_valid (ss->reader_taskid))
-    {
-      PDBG (pixma_dbg
-	    (1, "BUG:reader_taskid(%ld) != -1\n", (long) ss->reader_taskid));
-      terminate_reader_task (ss, NULL);
-    }
-  if (pipe (fds) == -1)
-    {
-      PDBG (pixma_dbg (1, "ERROR:start_reader_task():pipe() failed %s\n",
-		       strerror (errno)));
-      return PIXMA_ENOMEM;
-    }
-  ss->rpipe = fds[0];
-  ss->wpipe = fds[1];
-  ss->reader_stop = SANE_FALSE;
-
-  is_forked = sanei_thread_is_forked ();
-  if (is_forked)
-    {
-      pid = sanei_thread_begin (reader_process, ss);
-      if (sanei_thread_is_valid (pid))
-        {
-          close (ss->wpipe);
-          ss->wpipe = -1;
-        }
-    }
-  else
-    {
-      pid = sanei_thread_begin (reader_thread, ss);
-    }
-  if (!sanei_thread_is_valid (pid))
-    {
-      close (ss->wpipe);
-      close (ss->rpipe);
-      ss->wpipe = -1;
-      ss->rpipe = -1;
-      PDBG (pixma_dbg (1, "ERROR:unable to start reader task\n"));
-      return PIXMA_ENOMEM;
-    }
-  PDBG (pixma_dbg (3, "Reader task id=%ld (%s)\n", (long) pid,
-		   (is_forked) ? "forked" : "threaded"));
-  ss->reader_taskid = pid;
-  return 0;
-}
-
-/* libJPEG API callbacks */
-static void
-jpeg_init_source(j_decompress_ptr __sane_unused__ cinfo)
-{
-  /* No-op */
-}
-
-static void
-jpeg_term_source(j_decompress_ptr __sane_unused__ cinfo)
-{
-  /* No-op */
-}
-
-static boolean
-jpeg_fill_input_buffer(j_decompress_ptr cinfo)
-{
-  pixma_jpeg_src_mgr *mgr = (pixma_jpeg_src_mgr *)cinfo->src;
-  int size;
-  int retry;
-
-  for (retry = 0; retry < 30; retry ++ )
-    {
-      size = read (mgr->s->rpipe, mgr->buffer, 1024);
-      if (size == 0)
-        {
-          return FALSE;
-        }
-      else if (size < 0)
-        {
-          sleep (1);
-        }
-      else
-        {
-          mgr->jpeg.next_input_byte = mgr->buffer;
-          mgr->jpeg.bytes_in_buffer = size;
-          return TRUE;
-        }
-    }
-
-  return FALSE;
-}
-
-static void
-jpeg_skip_input_data(j_decompress_ptr cinfo, long num_bytes)
-{
-  pixma_jpeg_src_mgr *mgr = (pixma_jpeg_src_mgr *)cinfo->src;
-
-  if (num_bytes > 0)
-    {
-      /* Read and throw away extra */
-      while (num_bytes > (long)mgr->jpeg.bytes_in_buffer)
-        {
-           num_bytes -= (long)mgr->jpeg.bytes_in_buffer;
-           jpeg_fill_input_buffer(cinfo);
-        }
-
-      /* Update jpeg info structure with leftover */
-      mgr->jpeg.next_input_byte += (size_t) num_bytes;
-      mgr->jpeg.bytes_in_buffer -= (size_t) num_bytes;
-    }
-}
-
-/* Pixma JPEG reader helpers */
-static SANE_Status
-pixma_jpeg_start(pixma_sane_t *s)
-{
-  pixma_jpeg_src_mgr *mgr;
-
-  s->jpeg_cinfo.err = jpeg_std_error(&s->jpeg_err);
-
-  jpeg_create_decompress(&s->jpeg_cinfo);
-
-  s->jpeg_cinfo.src = (struct jpeg_source_mgr *)(*s->jpeg_cinfo.mem->alloc_small)((j_common_ptr)&s->jpeg_cinfo,
-                              JPOOL_PERMANENT, sizeof(pixma_jpeg_src_mgr));
-
-  memset(s->jpeg_cinfo.src, 0, sizeof(pixma_jpeg_src_mgr));
-
-  mgr = (pixma_jpeg_src_mgr *)s->jpeg_cinfo.src;
-  mgr->s = s;
-
-  mgr->buffer = (JOCTET *)(*s->jpeg_cinfo.mem->alloc_small)((j_common_ptr)&s->jpeg_cinfo,
-                                                  JPOOL_PERMANENT,
-                                                  1024 * sizeof(JOCTET));
-
-  mgr->jpeg.init_source = jpeg_init_source;
-  mgr->jpeg.fill_input_buffer = jpeg_fill_input_buffer;
-  mgr->jpeg.skip_input_data = jpeg_skip_input_data;
-  mgr->jpeg.resync_to_restart = jpeg_resync_to_restart;
-  mgr->jpeg.term_source = jpeg_term_source;
-  mgr->jpeg.bytes_in_buffer = 0;
-  mgr->jpeg.next_input_byte = NULL;
-
-  s->jpeg_header_seen = 0;
-
-  return SANE_STATUS_GOOD;
-}
-
-static SANE_Status
-pixma_jpeg_read_header(pixma_sane_t *s)
-{
-  pixma_jpeg_src_mgr *src = (pixma_jpeg_src_mgr *)s->jpeg_cinfo.src;
-
-  if (jpeg_read_header(&s->jpeg_cinfo, TRUE))
-    {
-      s->jdst = sanei_jpeg_jinit_write_ppm(&s->jpeg_cinfo);
-
-      if (jpeg_start_decompress(&s->jpeg_cinfo))
-        {
-          int size;
-
-          DBG(3, "%s: w: %d, h: %d, components: %d\n",
-                  __func__,
-                  s->jpeg_cinfo.output_width, s->jpeg_cinfo.output_height,
-                  s->jpeg_cinfo.output_components);
-
-          size = s->jpeg_cinfo.output_width * s->jpeg_cinfo.output_components * 1;
-
-          src->linebuffer = (*s->jpeg_cinfo.mem->alloc_large)((j_common_ptr)&s->jpeg_cinfo,
-                  JPOOL_PERMANENT, size);
-
-          src->linebuffer_size = 0;
-          src->linebuffer_index = 0;
-
-          s->jpeg_header_seen = 1;
-
-          return SANE_STATUS_GOOD;
-        }
-      else
-        {
-          DBG(0, "%s: decompression failed\n", __func__);
-          return SANE_STATUS_IO_ERROR;
-        }
-    }
-  else
-    {
-      DBG(0, "%s: cannot read JPEG header\n", __func__);
-      return SANE_STATUS_IO_ERROR;
-    }
-}
-
-static void
-pixma_jpeg_finish(pixma_sane_t *ss)
-{
-  jpeg_destroy_decompress(&ss->jpeg_cinfo);
-}
-
-static void
-pixma_jpeg_read(pixma_sane_t *ss, SANE_Byte *data,
-           SANE_Int max_length, SANE_Int *length)
-{
-  struct jpeg_decompress_struct cinfo = ss->jpeg_cinfo;
-  pixma_jpeg_src_mgr *src = (pixma_jpeg_src_mgr *)ss->jpeg_cinfo.src;
-
-  int l;
-
-  *length = 0;
-
-  /* copy from line buffer if available */
-  if (src->linebuffer_size && src->linebuffer_index < src->linebuffer_size)
-    {
-      *length = src->linebuffer_size - src->linebuffer_index;
-
-      if (*length > max_length)
-        *length = max_length;
-
-      memcpy(data, src->linebuffer + src->linebuffer_index, *length);
-             src->linebuffer_index += *length;
-
-      return;
-    }
-
-  if (cinfo.output_scanline >= cinfo.output_height)
-    {
-      *length = 0;
-      return;
-    }
-
-  /* scanlines of decompressed data will be in ss->jdst->buffer
-   * only one line at time is supported
-   */
-
-  l = jpeg_read_scanlines(&cinfo, ss->jdst->buffer, 1);
-  if (l == 0)
-    return;
-
-  /* from ss->jdst->buffer to linebuffer
-   * linebuffer holds width * bytesperpixel
-   */
-
-  (*ss->jdst->put_pixel_rows)(&cinfo, ss->jdst, 1, (char *)src->linebuffer);
-
-  *length = ss->sp.w * ss->sp.channels;
-  /* Convert RGB into grayscale */
-  if (ss->sp.channels == 1)
-    {
-      unsigned int i;
-      unsigned char *d = (unsigned char *)src->linebuffer;
-      unsigned char *s = (unsigned char *)src->linebuffer;
-      for (i = 0; i < ss->sp.w; i++)
-        {
-          /* Using BT.709 luma formula, fixed-point */
-          int sum = ( s[0]*2126 + s[1]*7152 + s[2]*722 );
-          *d = sum / 10000;
-          d ++;
-          s += 3;
-        }
-    }
-
-  /* Maybe pack into lineary binary image */
-  if (ss->sp.depth == 1)
-    {
-      *length /= 8;
-      unsigned int i;
-      unsigned char *d = (unsigned char *)src->linebuffer;
-      unsigned char *s = (unsigned char *)src->linebuffer;
-      unsigned char b = 0;
-      for (i = 1; i < ss->sp.w + 1; i++)
-        {
-          if (*(s++) > 127)
-            b = (b << 1) | 0;
-         else
-            b = (b << 1) | 1;
-        }
-      if ((i % 8) == 0)
-        *(d++) = b;
-    }
-
-  src->linebuffer_size = *length;
-  src->linebuffer_index = 0;
-
-  if (*length > max_length)
-    *length = max_length;
-
-  memcpy(data, src->linebuffer + src->linebuffer_index, *length);
-        src->linebuffer_index += *length;
-}
-
-
-
-static SANE_Status
-read_image (pixma_sane_t * ss, void *buf, unsigned size, int *readlen)
-{
-  int count, status;
-
-  if (readlen)
-    *readlen = 0;
-  if (ss->image_bytes_read >= ss->sp.image_size)
-    return SANE_STATUS_EOF;
-
-  do
-    {
-      if (ss->cancel)
-        /* ss->rpipe has already been closed by sane_cancel(). */
-        return SANE_STATUS_CANCELLED;
-      if (ss->sp.mode_jpeg && !ss->jpeg_header_seen)
-        {
-          status = pixma_jpeg_read_header(ss);
-          if (status != SANE_STATUS_GOOD)
-            {
-              close (ss->rpipe);
-              pixma_jpeg_finish(ss);
-              ss->rpipe = -1;
-              if (sanei_thread_is_valid (terminate_reader_task (ss, &status))
-                && status != SANE_STATUS_GOOD)
-                {
-                  return status;
-                }
-              else
-                {
-                  /* either terminate_reader_task failed or
-                     rpipe was closed but we expect more data */
-                  return SANE_STATUS_IO_ERROR;
-                }
-            }
-        }
-
-      if (ss->sp.mode_jpeg)
-        {
-          count = -1;
-          pixma_jpeg_read(ss, buf, size, &count);
-        }
-      else
-        count = read (ss->rpipe, buf, size);
-    }
-  while (count == -1 && errno == EINTR);
-
-  if (count == -1)
-    {
-      if (errno == EAGAIN)
-        return SANE_STATUS_GOOD;
-      if (!ss->cancel)
-        {
-          PDBG (pixma_dbg (1, "WARNING:read_image():read() failed %s\n",
-               strerror (errno)));
-        }
-      close (ss->rpipe);
-      ss->rpipe = -1;
-      terminate_reader_task (ss, NULL);
-      if (ss->sp.mode_jpeg)
-        pixma_jpeg_finish(ss);
-      return SANE_STATUS_IO_ERROR;
-    }
-
-  /* here count >= 0 */
-  ss->image_bytes_read += count;
-  if (ss->image_bytes_read > ss->sp.image_size)
-    {
-      PDBG (pixma_dbg (1, "BUG:ss->image_bytes_read > ss->sp.image_size\n"));
-    }
-  if (ss->image_bytes_read >= ss->sp.image_size)
-    {
-      close (ss->rpipe);
-      ss->rpipe = -1;
-      terminate_reader_task (ss, NULL);
-      if (ss->sp.mode_jpeg)
-        pixma_jpeg_finish(ss);
-    }
-  else if (count == 0)
-    {
-      PDBG (pixma_dbg (3, "read_image():reader task closed the pipe:%"
-		       PRIu64" bytes received, %"PRIu64" bytes expected\n",
-		       ss->image_bytes_read, ss->sp.image_size));
-      close (ss->rpipe);
-      if (ss->sp.mode_jpeg)
-        pixma_jpeg_finish(ss);
-      ss->rpipe = -1;
-      if (sanei_thread_is_valid (terminate_reader_task (ss, &status))
-      	  && status != SANE_STATUS_GOOD)
-        {
-          return status;
-        }
-      else
-        {
-          /* either terminate_reader_task failed or
-             rpipe was closed but we expect more data */
-          return SANE_STATUS_IO_ERROR;
-        }
-    }
-  if (readlen)
-    *readlen = count;
-  return SANE_STATUS_GOOD;
-}
-
-
-/*******************************************************************
- ** SANE API
- *******************************************************************/
-SANE_Status
-sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize)
-{
-  int status, myversion, i;
-  SANEI_Config config;
-
-  UNUSED (authorize);
-
-  if (!version_code)
-    return SANE_STATUS_INVAL;
-  myversion = 100 * PIXMA_VERSION_MAJOR + PIXMA_VERSION_MINOR;
-  *version_code = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, V_MINOR, myversion);
-  DBG_INIT ();
-  sanei_thread_init ();
-  pixma_set_debug_level (DBG_LEVEL);
-
-  PDBG(pixma_dbg(2, "pixma is compiled %s pthread support.\n",
-                   (sanei_thread_is_forked () ? "without" : "with")));
-
-  for (i = 0; i < MAX_CONF_DEVICES; i++)
-    conf_devices[i] = NULL;
-
-  config.count = 0;
-  config.descriptors = NULL;
-  config.values = NULL;
-
-  if (sanei_configure_attach(PIXMA_CONFIG_FILE, &config, config_attach_pixma) !=
-       SANE_STATUS_GOOD)
-    PDBG(pixma_dbg(2, "Could not read pixma configuration file: %s\n",
-                   PIXMA_CONFIG_FILE));
-
-  status = pixma_init ();
-  if (status < 0)
-    {
-      PDBG (pixma_dbg (2, "pixma_init() failed %s\n", pixma_strerror (status)));
-    }
-  return map_error (status);
-}
-
-void
-sane_exit (void)
-{
-  while (first_scanner)
-    sane_close (first_scanner);
-  cleanup_device_list ();
-  pixma_cleanup ();
-}
-
-SANE_Status
-sane_get_devices (const SANE_Device *** device_list, SANE_Bool local_only)
-{
-  UNUSED (local_only);
-
-  if (!device_list)
-    return SANE_STATUS_INVAL;
-  find_scanners ();
-  *device_list = dev_list;
-  return (dev_list) ? SANE_STATUS_GOOD : SANE_STATUS_NO_MEM;
-}
-
-SANE_Status
-sane_open (SANE_String_Const name, SANE_Handle * h)
-{
-  unsigned i, j, nscanners;
-  int error = 0;
-  pixma_sane_t *ss = NULL;
-  const pixma_config_t *cfg;
-
-  if (!name || !h)
-    return SANE_STATUS_INVAL;
-
-  *h = NULL;
-  nscanners = pixma_find_scanners (conf_devices);
-  if (nscanners == 0)
-    return SANE_STATUS_INVAL;
-  if (name[0] == '\0')
-    name = pixma_get_device_id (0);
-
-  /* Have we already opened the scanner? */
-  for (ss = first_scanner; ss; ss = ss->next)
-    {
-      if (strcmp (pixma_get_string (ss->s, PIXMA_STRING_ID), name) == 0)
-        {
-          /* We have already opened it! */
-          return SANE_STATUS_DEVICE_BUSY;
-        }
-    }
-
-  i = 0;
-  while (strcmp (pixma_get_device_id (i), name) != 0)
-    {
-      if (++i >= nscanners)
-	      return SANE_STATUS_INVAL;
-    }
-  cfg = pixma_get_device_config (i);
-  if ((cfg->cap & PIXMA_CAP_EXPERIMENT) != 0)
-    {
-#ifndef NDEBUG
-      pixma_dbg (1, "WARNING:"
-		 "Experimental backend CAN DAMAGE your hardware!\n");
-      if (getenv_atoi ("PIXMA_EXPERIMENT", 0) == 0)
-        {
-          pixma_dbg (1, "Experimental SANE backend for %s is disabled "
-               "by default.\n", pixma_get_device_model (i));
-          pixma_dbg (1, "To enable it, set the environment variable "
-               "PIXMA_EXPERIMENT to non-zero.\n");
-          return SANE_STATUS_UNSUPPORTED;
-        }
-#else
-      return SANE_STATUS_UNSUPPORTED;
-#endif
-    }
-
-  ss = (pixma_sane_t *) calloc (1, sizeof (*ss));
-  if (!ss)
-    return SANE_STATUS_NO_MEM;
-  ss->next = first_scanner;
-  first_scanner = ss;
-  sanei_thread_initialize (ss->reader_taskid);
-  ss->wpipe = -1;
-  ss->rpipe = -1;
-  ss->idle = SANE_TRUE;
-  ss->scanning = SANE_FALSE;
-  ss->sp.frontend_cancel = SANE_FALSE;
-  for (j=0; j < BUTTON_GROUP_SIZE; j++)
-    ss->button_option_is_cached[j] = 0;
-  error = pixma_open (i, &ss->s);
-  if (error < 0)
-    {
-      sane_close (ss);
-      return map_error (error);
-    }
-  pixma_enable_background (ss->s, 0);
-  init_option_descriptors (ss);
-  *h = ss;
-  return SANE_STATUS_GOOD;
-}
-
-void
-sane_close (SANE_Handle h)
-{
-  pixma_sane_t **p, *ss;
-
-  for (p = &first_scanner; *p && *p != (pixma_sane_t *) h; p = &((*p)->next))
-    {
-    }
-  if (!(*p))
-    return;
-  ss = *p;
-  sane_cancel (ss);
-  pixma_close (ss->s);
-  *p = ss->next;
-  free (ss);
-}
-
-const SANE_Option_Descriptor *
-sane_get_option_descriptor (SANE_Handle h, SANE_Int n)
-{
-  DECL_CTX;
-
-  if (ss && 0 <= n && n < opt_last)
-    return &SOD (n);
-  return NULL;
-}
-
-SANE_Status
-sane_control_option (SANE_Handle h, SANE_Int n,
-		     SANE_Action a, void *v, SANE_Int * i)
-{
-  DECL_CTX;
-  SANE_Int info = 0;
-  int error;
-  option_descriptor_t *opt;
-
-  if (i)
-    *i = 0;
-  if (!ss)
-    return SANE_STATUS_INVAL;
-  if (n < 0 || n >= opt_last)
-    return SANE_STATUS_UNSUPPORTED;
-  if (!ss->idle && a != SANE_ACTION_GET_VALUE)
-    {
-      PDBG (pixma_dbg (3, "Warning: !idle && !SANE_ACTION_GET_VALUE\n"));
-      if (ss->sp.source != PIXMA_SOURCE_ADF && ss->sp.source != PIXMA_SOURCE_ADFDUP)
-        return SANE_STATUS_INVAL;
-    }
-
-  opt = &(OPT_IN_CTX[n]);
-  if (!SANE_OPTION_IS_ACTIVE (opt->sod.cap))
-    return SANE_STATUS_INVAL;
-  switch (a)
-    {
-    case SANE_ACTION_SET_VALUE:
-      if ((opt->sod.type != SANE_TYPE_BUTTON && !v) ||
-          !SANE_OPTION_IS_SETTABLE (opt->sod.cap))
-        return SANE_STATUS_INVAL;	/* or _UNSUPPORTED? */
-      break;
-    case SANE_ACTION_SET_AUTO:
-      if (!(opt->sod.cap & SANE_CAP_AUTOMATIC) ||
-          !SANE_OPTION_IS_SETTABLE (opt->sod.cap))
-        return SANE_STATUS_INVAL;	/* or _UNSUPPORTED? */
-      break;
-    case SANE_ACTION_GET_VALUE:
-      if (!v || !(opt->sod.cap & SANE_CAP_SOFT_DETECT))
-        return SANE_STATUS_INVAL;	/* or _UNSUPPORTED? */
-      break;
-    default:
-      return SANE_STATUS_UNSUPPORTED;
-    }
-
-  error = control_option (ss, n, a, v, &info);
-  if (error == SANE_STATUS_GOOD && i)
-    *i = info;
-  return error;
-}
-
-SANE_Status
-sane_get_parameters (SANE_Handle h, SANE_Parameters * p)
-{
-  DECL_CTX;
-  pixma_scan_param_t temp, *sp;
-
-  if (!ss || !p)
-    return SANE_STATUS_INVAL;
-
-  if (!ss->idle)
-    {
-      sp = &ss->sp;		/* sp is calculated in sane_start() */
-    }
-  else
-    {
-      calc_scan_param (ss, &temp);
-      sp = &temp;
-    }
-  p->format = (sp->channels == 3) ? SANE_FRAME_RGB : SANE_FRAME_GRAY;
-  p->last_frame = SANE_TRUE;
-  p->lines = sp->h;
-  p->depth = sp->depth;
-  p->pixels_per_line = sp->w;
-  /* p->bytes_per_line = sp->line_size; NOTE: It should work this way, but it doesn't. No SANE frontend can cope with this. */
-  p->bytes_per_line = (sp->w * sp->channels * sp->depth) / 8;
-  return SANE_STATUS_GOOD;
-}
-
-SANE_Status
-sane_start (SANE_Handle h)
-{
-  DECL_CTX;
-  int error = 0;
-
-  if (!ss)
-    return SANE_STATUS_INVAL;
-  if (!ss->idle && ss->scanning)
-    {
-      PDBG (pixma_dbg (3, "Warning in Sane_start: !idle && scanning. idle=%d, ss->scanning=%d\n",
-                       ss->idle, ss->scanning));
-      if (ss->sp.source != PIXMA_SOURCE_ADF && ss->sp.source != PIXMA_SOURCE_ADFDUP)
-        return SANE_STATUS_INVAL;
-    }
-
-  ss->cancel = SANE_FALSE;
-  if (ss->idle ||
-      ss->source_map[OVAL (opt_source).w] == PIXMA_SOURCE_FLATBED ||
-      ss->source_map[OVAL (opt_source).w] == PIXMA_SOURCE_TPU)
-    ss->page_count = 0;	/* start from idle state or scan from flatbed or TPU */
-  else
-    ss->page_count++;
-  if (calc_scan_param (ss, &ss->sp) < 0)
-    return SANE_STATUS_INVAL;
-
-  /* Prepare the JPEG decompressor, if needed */
-  if (ss->sp.mode_jpeg)
-    {
-      SANE_Status status;
-      status = pixma_jpeg_start(ss);
-      if (status != SANE_STATUS_GOOD)
-        {
-          PDBG (pixma_dbg(1, "%s: pixma_jpeg_start: %s\n", __func__, sane_strstatus(status)) );
-          return status;
-        }
-    }
-
-  ss->image_bytes_read = 0;
-  /* TODO: Check paper here in sane_start(). A function like
-     pixma_get_status() is needed. */
-  error = start_reader_task (ss);
-  if (error >= 0)
-    {
-      ss->output_line_size = (ss->sp.w * ss->sp.channels * ss->sp.depth) / 8;
-      ss->byte_pos_in_line = 0;
-      ss->last_read_status = SANE_STATUS_GOOD;
-      ss->scanning = SANE_TRUE;
-      ss->idle = SANE_FALSE;
-      if (ss->sp.mode_jpeg && !ss->jpeg_header_seen)
-        {
-          SANE_Status status;
-          status = pixma_jpeg_read_header(ss);
-          if (status != SANE_STATUS_GOOD)
-            {
-              close (ss->rpipe);
-              pixma_jpeg_finish(ss);
-              ss->rpipe = -1;
-              if (sanei_thread_is_valid (terminate_reader_task (ss, &error))
-                && error != SANE_STATUS_GOOD)
-                {
-                  return error;
-                }
-            }
-        }
-    }
-  return map_error (error);
-}
-
-SANE_Status
-sane_read (SANE_Handle h, SANE_Byte * buf, SANE_Int maxlen, SANE_Int * len)
-{
-  DECL_CTX;
-  int sum, n;
-  /* Due to 32 pixels alignment, sizeof(temp) is to be greater than:
-   * max(nchannels) * max (sp.line_size - output_line_size)
-   * so currently: 3 * 32 = 96  for better end line cropping efficiency */
-  SANE_Byte temp[100];
-  SANE_Status status;
-
-  if (len)
-    *len = 0;
-  if (!ss || !buf || !len)
-    return SANE_STATUS_INVAL;
-  if (ss->cancel)
-    return SANE_STATUS_CANCELLED;
-  if ((ss->idle)
-      && (ss->sp.source == PIXMA_SOURCE_ADF || ss->sp.source == PIXMA_SOURCE_ADFDUP))
-    return SANE_STATUS_INVAL;
-  if (!ss->scanning)
-    return ss->last_read_status;
-
-  status = SANE_STATUS_GOOD;
-  /* CCD scanners use software lineart
-   * the scanner must scan 24 bit color or 8 bit grayscale for one bit lineart */
-  if ((ss->sp.line_size - ((ss->sp.software_lineart == 1) ? (ss->output_line_size * 8) : ss->output_line_size)) == 0)
-    {
-      status = read_image (ss, buf, maxlen, &sum);
-    }
-  else
-    {
-      /* FIXME: Because there is no frontend that can cope with padding at
-         the end of line, we've to remove it here in the backend! */
-      PDBG (pixma_dbg (1, "*sane_read***** Warning: padding may cause incomplete scan results\n"));
-      sum = 0;
-      while (sum < maxlen)
-        {
-          if (ss->byte_pos_in_line < ss->output_line_size)
-            {
-              n = ss->output_line_size - ss->byte_pos_in_line;
-              if ((maxlen - sum) < n)
-                n = maxlen - sum;
-              status = read_image (ss, buf, n, &n);
-              if (n == 0)
-                break;
-              sum += n;
-              buf += n;
-              ss->byte_pos_in_line += n;
-            }
-          else
-            {
-              /* skip padding */
-              n = ss->sp.line_size - ss->byte_pos_in_line;
-              if (n > (int) sizeof (temp))
-                {
-                  PDBG (pixma_dbg (3, "Inefficient skip buffer. Should be %d\n", n));
-                  n = sizeof (temp);
-                }
-              status = read_image (ss, temp, n, &n);
-              if (n == 0)
-                break;
-              ss->byte_pos_in_line += n;
-              if (ss->byte_pos_in_line == ss->sp.line_size)
-                ss->byte_pos_in_line = 0;
-             }
-        }
-    }
-  if (ss->cancel)
-    status = SANE_STATUS_CANCELLED;
-  else if ((status == SANE_STATUS_GOOD || status == SANE_STATUS_EOF) &&
-	   sum > 0)
-    {
-      *len = sum;
-      status = SANE_STATUS_GOOD;
-    }
-  ss->scanning = (status == SANE_STATUS_GOOD);
-  ss->last_read_status = status;
-  return status;
-}
-
-void
-sane_cancel (SANE_Handle h)
-{
-  DECL_CTX;
-
-  if (!ss)
-    return;
-  ss->cancel = SANE_TRUE;
-  ss->sp.frontend_cancel = SANE_TRUE;
-  if (ss->idle)
-    return;
-  close (ss->rpipe);
-  if (ss->sp.mode_jpeg)
-    pixma_jpeg_finish(ss);
-  ss->rpipe = -1;
-  terminate_reader_task (ss, NULL);
-  ss->idle = SANE_TRUE;
-}
-
-SANE_Status
-sane_set_io_mode (SANE_Handle h, SANE_Bool m)
-{
-  DECL_CTX;
-
-  if (!ss || ss->idle || ss->rpipe == -1)
-    return SANE_STATUS_INVAL;
-#ifdef HAVE_FCNTL_H
-  PDBG (pixma_dbg (2, "Setting %sblocking mode\n", (m) ? "non-" : ""));
-  if (fcntl (ss->rpipe, F_SETFL, (m) ? O_NONBLOCK : 0) == -1)
-    {
-      PDBG (pixma_dbg
-	    (1, "WARNING:fcntl(F_SETFL) failed %s\n", strerror (errno)));
-      return SANE_STATUS_UNSUPPORTED;
-    }
-  return SANE_STATUS_GOOD;
-#else
-  return (m) ? SANE_STATUS_UNSUPPORTED : SANE_STATUS_GOOD;
-#endif
-}
-
-SANE_Status
-sane_get_select_fd (SANE_Handle h, SANE_Int * fd)
-{
-  DECL_CTX;
-
-  *fd = -1;
-  if (!ss || !fd || ss->idle || ss->rpipe == -1)
-    return SANE_STATUS_INVAL;
-  *fd = ss->rpipe;
-  return SANE_STATUS_GOOD;
-}
-
-/*
-BEGIN SANE_Option_Descriptor
-
-rem -------------------------------------------
-type group
-  title Scan mode
-
-type int resolution
-  unit dpi
-  constraint @word_list = ss->dpi_list
-  default 75
-  title @SANE_TITLE_SCAN_RESOLUTION
-  desc  @SANE_DESC_SCAN_RESOLUTION
-  cap soft_select soft_detect automatic
-  info reload_params
-
-type string mode[30]
-  constraint @string_list = ss->mode_list
-  default @s = SANE_VALUE_SCAN_MODE_COLOR
-  title @SANE_TITLE_SCAN_MODE
-  desc  @SANE_DESC_SCAN_MODE
-  cap soft_select soft_detect automatic
-  info reload_params
-
-type string source[30]
-  constraint @string_list = ss->source_list
-  title @SANE_TITLE_SCAN_SOURCE
-  desc  Selects the scan source (such as a document-feeder). Set source before mode and resolution. Resets mode and resolution to auto values.
-  default Flatbed
-  cap soft_select soft_detect
-
-type bool button-controlled
-  title Button-controlled scan
-  desc When enabled, scan process will not start immediately. To proceed, press \"SCAN\" button (for MP150) or \"COLOR\" button (for other models). To cancel, press \"GRAY\" button.
-  default SANE_FALSE
-  cap soft_select soft_detect inactive
-
-rem -------------------------------------------
-type group
-  title Gamma
-
-type bool custom-gamma
-  default SANE_TRUE
-  title @SANE_TITLE_CUSTOM_GAMMA
-  desc  @SANE_DESC_CUSTOM_GAMMA
-  cap soft_select soft_detect automatic inactive
-
-type int gamma-table[4096]
-  constraint (0,255,0)
-  title @SANE_TITLE_GAMMA_VECTOR
-  desc  @SANE_DESC_GAMMA_VECTOR
-  cap soft_select soft_detect automatic inactive
-
-type fixed gamma
-  default AUTO_GAMMA
-  constraint (0.3,5,0)
-  title Gamma function exponent
-  desc  Changes intensity of midtones
-  cap soft_select soft_detect automatic inactive
-
-rem -------------------------------------------
-type group
-  title Geometry
-
-type fixed tl-x
-  unit mm
-  default 0
-  constraint @range = &ss->xrange
-  title @SANE_TITLE_SCAN_TL_X
-  desc  @SANE_DESC_SCAN_TL_X
-  cap soft_select soft_detect automatic
-  info reload_params
-
-type fixed tl-y
-  unit mm
-  default 0
-  constraint @range = &ss->yrange
-  title @SANE_TITLE_SCAN_TL_Y
-  desc  @SANE_DESC_SCAN_TL_Y
-  cap soft_select soft_detect automatic
-  info reload_params
-
-type fixed br-x
-  unit mm
-  default _MAX
-  constraint @range = &ss->xrange
-  title @SANE_TITLE_SCAN_BR_X
-  desc  @SANE_DESC_SCAN_BR_X
-  cap soft_select soft_detect automatic
-  info reload_params
-
-type fixed br-y
-  unit mm
-  default _MAX
-  constraint @range = &ss->yrange
-  title @SANE_TITLE_SCAN_BR_Y
-  desc  @SANE_DESC_SCAN_BR_Y
-  cap soft_select soft_detect automatic
-  info reload_params
-
-rem -------------------------------------------
-type group
-  title Buttons
-
-type button button-update
-  title Update button state
-  cap soft_select soft_detect advanced
-
-type int button-1
-  default 0
-  title Button 1
-  cap soft_detect advanced
-
-type int button-2
-  default 0
-  title Button 2
-  cap soft_detect advanced
-
-type int original
-  default 0
-  title Type of original to scan
-  cap soft_detect advanced
-
-type int target
-  default 0
-  title Target operation type
-  cap soft_detect advanced
-
-type int scan-resolution
-  default 0
-  title Scan resolution
-  cap soft_detect advanced
-
-rem -------------------------------------------
-type group
-  title Extras
-
-type int threshold
-  unit PERCENT
-  default 50
-  constraint (0,100,1)
-  title @SANE_TITLE_THRESHOLD
-  desc  @SANE_DESC_THRESHOLD
-  cap soft_select soft_detect automatic inactive
-
-type int threshold-curve
-  constraint (0,127,1)
-  title Threshold curve
-  desc  Dynamic threshold curve, from light to dark, normally 50-65
-  cap soft_select soft_detect automatic inactive
-
-type int adf-wait
-  default 0
-  constraint (0,3600,1)
-  title ADF Waiting Time
-  desc  When set, the scanner searches the waiting time in seconds for a new document inserted into the automatic document feeder.
-  cap soft_select soft_detect automatic inactive
-
-rem -------------------------------------------
-END SANE_Option_Descriptor
-*/
-
-/* pixma_sane_options.c generated by
- * scripts/pixma_gen_options.py < pixma.c > pixma_sane_options.c
- *
- * pixma_sane_options.h generated by
- * scripts/pixma_gen_options.py h < pixma.c > pixma_sane_options.h
- */
-#include "pixma_sane_options.c"