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diff --git a/backend/pixma.c b/backend/pixma.c
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+++ b/backend/pixma.c
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+/* SANE - Scanner Access Now Easy.
+
+ Copyright (C) 2007-2008 Nicolas Martin, <nicols-guest at alioth dot debian dot org>
+ Copyright (C) 2006-2007 Wittawat Yamwong <wittawat@web.de>
+ Copyright (C) 2011-2013 Rolf Bensch <rolf at bensch hyphen online dot 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"
+
+#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;
+} pixma_sane_t;
+
+
+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);
+ }
+ *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);
+}
+#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;
+
+ 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 RETSIGTYPE
+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 (pid == -1)
+ return -1;
+ 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);
+ ss->reader_taskid = -1;
+
+ 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)));
+ return -1;
+ }
+}
+
+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 (ss->reader_taskid != -1)
+ {
+ 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 (pid > 0)
+ {
+ close (ss->wpipe);
+ ss->wpipe = -1;
+ }
+ }
+ else
+ {
+ pid = sanei_thread_begin (reader_thread, ss);
+ }
+ if (pid == -1)
+ {
+ 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;
+}
+
+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;
+ 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);
+ 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);
+ }
+ 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);
+ ss->rpipe = -1;
+ if (terminate_reader_task (ss, &status) != -1
+ && 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;
+ ss->reader_taskid = -1;
+ ss->wpipe = -1;
+ ss->rpipe = -1;
+ ss->idle = SANE_TRUE;
+ ss->scanning = 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;
+ 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;
+ }
+ 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;
+ if (ss->idle)
+ return;
+ close (ss->rpipe);
+ 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
+
+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"
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 11:59:54 +0000