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authorJörg Frings-Fürst <debian@jff-webhosting.net>2020-08-24 18:44:51 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2020-08-24 18:44:51 +0200
commitad38bc6ecb80ddeb562841b33258dd53659b1da6 (patch)
treee02e9c3ff760554fd87f70df0e18b88594091a48 /backend/canon_lide70.c
parent9c23ed018d72eed2554f4f9cff1ae6e6bb0cd479 (diff)
New upstream version 1.0.31upstream/1.0.31
Diffstat (limited to 'backend/canon_lide70.c')
-rw-r--r--backend/canon_lide70.c960
1 files changed, 960 insertions, 0 deletions
diff --git a/backend/canon_lide70.c b/backend/canon_lide70.c
new file mode 100644
index 0000000..100a45f
--- /dev/null
+++ b/backend/canon_lide70.c
@@ -0,0 +1,960 @@
+/* sane - Scanner Access Now Easy.
+
+ BACKEND canon_lide70
+
+ Copyright (C) 2019 Juergen Ernst and pimvantend.
+
+ 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.
+
+ This file implements a SANE backend for the Canon CanoScan LiDE 70 */
+
+#define BUILD 0
+#define MM_IN_INCH 25.4
+
+#include "../include/sane/config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+#include "../include/sane/sane.h"
+#include "../include/sane/sanei.h"
+#include "../include/sane/saneopts.h"
+#include "../include/sane/sanei_config.h"
+#include "../include/sane/sanei_usb.h"
+#define BACKEND_NAME canon_lide70
+#define CANONUSB_CONFIG_FILE "canon_lide70.conf"
+#include "../include/sane/sanei_backend.h"
+
+typedef enum
+{
+ opt_num_opts = 0,
+ opt_mode_group,
+ opt_threshold,
+ opt_mode,
+ opt_resolution,
+ opt_non_blocking,
+ opt_geometry_group,
+ opt_tl_x,
+ opt_tl_y,
+ opt_br_x,
+ opt_br_y,
+ /* must come last: */
+ num_options
+}
+canon_opts;
+
+#include "canon_lide70-common.c"
+
+static size_t
+max_string_size (const SANE_String_Const strings[])
+{
+ size_t size, max_size = 0;
+ SANE_Int i;
+
+ for (i = 0; strings[i]; ++i)
+ {
+ size = strlen (strings[i]) + 1;
+ if (size > max_size)
+ max_size = size;
+ }
+ return max_size;
+}
+
+static SANE_String_Const mode_list[] = {
+ SANE_VALUE_SCAN_MODE_COLOR,
+ SANE_VALUE_SCAN_MODE_GRAY,
+ SANE_VALUE_SCAN_MODE_LINEART,
+ 0
+};
+
+static SANE_Fixed init_tl_x = SANE_FIX (0.0);
+static SANE_Fixed init_tl_y = SANE_FIX (0.0);
+static SANE_Fixed init_br_x = SANE_FIX (80.0);
+static SANE_Fixed init_br_y = SANE_FIX (100.0);
+static SANE_Int init_threshold = 75;
+static SANE_Int init_resolution = 600;
+static SANE_String init_mode = SANE_VALUE_SCAN_MODE_COLOR;
+static SANE_Int init_graymode = 0;
+static SANE_Bool init_non_blocking = SANE_FALSE;
+
+/*-----------------------------------------------------------------*/
+/*
+Scan range
+*/
+
+static const SANE_Range widthRange = {
+ 0, /* minimum */
+ SANE_FIX (CANON_MAX_WIDTH * MM_IN_INCH / 600), /* maximum */
+ 0 /* quantization */
+};
+
+static const SANE_Range heightRange = {
+ 0, /* minimum */
+/* SANE_FIX (CANON_MAX_HEIGHT * MM_IN_INCH / 600 - TOP_EDGE ), maximum */
+ SANE_FIX (297.0),
+ 0 /* quantization */
+};
+
+static const SANE_Range threshold_range = {
+ 0,
+ 100,
+ 1
+};
+
+static SANE_Int resolution_list[] = { 5,
+ 75,
+ 150,
+ 300,
+ 600,
+ 1200
+};
+
+typedef struct Canon_Device
+{
+ struct Canon_Device *next;
+ SANE_String name;
+ SANE_Device sane;
+}
+Canon_Device;
+
+/* Canon_Scanner is the type used for the sane handle */
+typedef struct Canon_Scanner
+{
+ struct Canon_Scanner *next;
+ Canon_Device *device;
+ CANON_Handle scan;
+}
+Canon_Scanner;
+
+static int num_devices = 0;
+static const SANE_Device **devlist = NULL;
+static Canon_Device *first_dev = NULL;
+static Canon_Scanner *first_handle = NULL;
+
+/*-----------------------------------------------------------------*/
+static SANE_Status
+attach_scanner (const char *devicename, Canon_Device ** devp)
+{
+ CANON_Handle scan;
+ Canon_Device *dev;
+ SANE_Status status;
+
+ DBG (3, "attach_scanner: %s\n", devicename);
+
+ for (dev = first_dev; dev; dev = dev->next)
+ {
+ if (strcmp (dev->sane.name, devicename) == 0)
+ {
+ if (devp)
+ *devp = dev;
+ return SANE_STATUS_GOOD;
+ }
+ }
+
+ dev = malloc (sizeof (*dev));
+ if (!dev)
+ return SANE_STATUS_NO_MEM;
+ memset (dev, '\0', sizeof (Canon_Device)); /* clear structure */
+
+ DBG (4, "attach_scanner: opening %s\n", devicename);
+
+ status = CANON_open_device (&scan, devicename);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (1, "ERROR: attach_scanner: opening %s failed\n", devicename);
+ free (dev);
+ return status;
+ }
+ dev->name = strdup (devicename);
+ dev->sane.name = dev->name;
+ dev->sane.vendor = "CANON";
+ dev->sane.model = CANON_get_device_name (&scan);
+ dev->sane.type = "flatbed scanner";
+ CANON_close_device (&scan);
+
+ ++num_devices;
+ dev->next = first_dev;
+ first_dev = dev;
+
+ if (devp)
+ *devp = dev;
+ return SANE_STATUS_GOOD;
+}
+
+
+/* callback function for sanei_usb_attach_matching_devices */
+static SANE_Status
+attach_one (const char *name)
+{
+ attach_scanner (name, 0);
+ return SANE_STATUS_GOOD;
+}
+
+
+/* Find our devices */
+SANE_Status
+sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize)
+{
+ char config_line[PATH_MAX];
+ size_t len;
+ FILE *fp;
+
+ DBG_INIT ();
+
+#if 0
+ DBG_LEVEL = 10;
+#endif
+
+ DBG (2, "sane_init: version_code %s 0, authorize %s 0\n",
+ version_code == 0 ? "=" : "!=", authorize == 0 ? "=" : "!=");
+ DBG (1, "sane_init: SANE Canon LiDE70 backend version %d.%d.%d from %s\n",
+ V_MAJOR, V_MINOR, BUILD, PACKAGE_STRING);
+
+ if (version_code)
+ *version_code = SANE_VERSION_CODE (V_MAJOR, V_MINOR, BUILD);
+
+ sanei_usb_init ();
+
+ fp = sanei_config_open (CANONUSB_CONFIG_FILE);
+
+ if (!fp)
+ {
+ /* no config-file: try these */
+ attach_scanner ("/dev/scanner", 0);
+ attach_scanner ("/dev/usbscanner", 0);
+ attach_scanner ("/dev/usb/scanner", 0);
+ return SANE_STATUS_GOOD;
+ }
+
+ DBG (3, "reading configure file %s\n", CANONUSB_CONFIG_FILE);
+
+ while (sanei_config_read (config_line, sizeof (config_line), fp))
+ {
+ if (config_line[0] == '#')
+ continue; /* ignore line comments */
+
+ len = strlen (config_line);
+
+ if (!len)
+ continue; /* ignore empty lines */
+
+ DBG (4, "attach_matching_devices(%s)\n", config_line);
+ sanei_usb_attach_matching_devices (config_line, attach_one);
+ }
+
+ DBG (4, "finished reading configure file\n");
+
+ fclose (fp);
+
+ return SANE_STATUS_GOOD;
+}
+
+
+void
+sane_exit (void)
+{
+ Canon_Device *dev, *next;
+
+ DBG (3, "sane_exit\n");
+
+ for (dev = first_dev; dev; dev = next)
+ {
+ next = dev->next;
+ free (dev->name);
+ free (dev);
+ }
+
+ if (devlist)
+ free (devlist);
+ return;
+}
+
+
+SANE_Status
+sane_get_devices (const SANE_Device *** device_list, SANE_Bool local_only)
+{
+ Canon_Device *dev;
+ int i;
+
+ DBG (3, "sane_get_devices(local_only = %d)\n", local_only);
+
+ if (devlist)
+ free (devlist);
+
+ devlist = malloc ((num_devices + 1) * sizeof (devlist[0]));
+ if (!devlist)
+ return SANE_STATUS_NO_MEM;
+
+ i = 0;
+
+ for (dev = first_dev; i < num_devices; dev = dev->next)
+ devlist[i++] = &dev->sane;
+
+ devlist[i++] = 0;
+
+ *device_list = devlist;
+
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+init_options (CANON_Handle * chndl)
+{
+ SANE_Option_Descriptor *od;
+
+ DBG (2, "begin init_options: chndl=%p\n", (void *) chndl);
+
+ /* opt_num_opts */
+ od = &chndl->opt[opt_num_opts];
+ od->name = "";
+ od->title = SANE_TITLE_NUM_OPTIONS;
+ od->desc = SANE_DESC_NUM_OPTIONS;
+ od->type = SANE_TYPE_INT;
+ od->unit = SANE_UNIT_NONE;
+ od->size = sizeof (SANE_Word);
+ od->cap = SANE_CAP_SOFT_DETECT;
+ od->constraint_type = SANE_CONSTRAINT_NONE;
+ od->constraint.range = 0;
+ chndl->val[opt_num_opts].w = num_options;
+
+ DBG (2, "val[opt_num_opts]: %d\n", chndl->val[opt_num_opts].w);
+
+ /* opt_mode_group */
+ od = &chndl->opt[opt_mode_group];
+ od->name = "";
+ od->title = SANE_I18N ("Scan Mode");
+ od->desc = "";
+ od->type = SANE_TYPE_GROUP;
+ od->unit = SANE_UNIT_NONE;
+ od->size = 0;
+ od->cap = 0;
+ od->constraint_type = SANE_CONSTRAINT_NONE;
+ od->constraint.range = 0;
+ chndl->val[opt_mode_group].w = 0;
+
+ /* opt_mode */
+ od = &chndl->opt[opt_mode];
+ od->name = SANE_NAME_SCAN_MODE;
+ od->title = SANE_TITLE_SCAN_MODE;
+ od->desc = SANE_DESC_SCAN_MODE;
+ od->type = SANE_TYPE_STRING;
+ od->unit = SANE_UNIT_NONE;
+ od->size = max_string_size (mode_list);
+ od->cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+ od->constraint_type = SANE_CONSTRAINT_STRING_LIST;
+ od->constraint.string_list = mode_list;
+ chndl->val[opt_mode].s = malloc (od->size);
+ if (!chndl->val[opt_mode].s)
+ return SANE_STATUS_NO_MEM;
+ strcpy (chndl->val[opt_mode].s, init_mode);
+ chndl->graymode = init_graymode;
+
+ /* opt_threshold */
+ od = &chndl->opt[opt_threshold];
+ od->name = SANE_NAME_THRESHOLD;
+ od->title = SANE_TITLE_THRESHOLD;
+ od->desc = SANE_DESC_THRESHOLD;
+ od->type = SANE_TYPE_INT;
+ od->unit = SANE_UNIT_PERCENT;
+ od->size = sizeof (SANE_Word);
+ od->cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT | SANE_CAP_INACTIVE;
+ od->constraint_type = SANE_CONSTRAINT_RANGE;
+ od->constraint.range = &threshold_range;
+ chndl->val[opt_threshold].w = init_threshold;
+
+ /* opt_resolution */
+ od = &chndl->opt[opt_resolution];
+ od->name = SANE_NAME_SCAN_RESOLUTION;
+ od->title = SANE_TITLE_SCAN_RESOLUTION;
+ od->desc = SANE_DESC_SCAN_RESOLUTION;
+ od->type = SANE_TYPE_INT;
+ od->unit = SANE_UNIT_DPI;
+ od->size = sizeof (SANE_Word);
+ od->cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+ od->constraint_type = SANE_CONSTRAINT_WORD_LIST;
+ od->constraint.word_list = resolution_list;
+ chndl->val[opt_resolution].w = init_resolution;
+
+ /* opt_non_blocking */
+ od = &chndl->opt[opt_non_blocking];
+ od->name = "non-blocking";
+ od->title = SANE_I18N ("Use non-blocking IO");
+ od->desc = SANE_I18N ("Use non-blocking IO for sane_read() if supported "
+ "by the frontend.");
+ od->type = SANE_TYPE_BOOL;
+ od->unit = SANE_UNIT_NONE;
+ od->size = sizeof (SANE_Word);
+ od->cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT | SANE_CAP_INACTIVE;
+ od->constraint_type = SANE_CONSTRAINT_NONE;
+ od->constraint.range = 0;
+ chndl->val[opt_non_blocking].w = init_non_blocking;
+
+ /* opt_geometry_group */
+ od = &chndl->opt[opt_geometry_group];
+ od->name = "";
+ od->title = SANE_I18N ("Geometry");
+ od->desc = "";
+ od->type = SANE_TYPE_GROUP;
+ od->unit = SANE_UNIT_NONE;
+ od->size = 0;
+ od->cap = 0;
+ od->constraint_type = SANE_CONSTRAINT_NONE;
+ od->constraint.range = 0;
+ chndl->val[opt_geometry_group].w = 0;
+
+ /* opt_tl_x */
+ od = &chndl->opt[opt_tl_x];
+ od->name = SANE_NAME_SCAN_TL_X;
+ od->title = SANE_TITLE_SCAN_TL_X;
+ od->desc = SANE_DESC_SCAN_TL_X;
+ od->type = SANE_TYPE_FIXED;
+ od->unit = SANE_UNIT_MM;
+ od->size = sizeof (SANE_Word);
+ od->cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+ od->constraint_type = SANE_CONSTRAINT_RANGE;
+ od->constraint.range = &widthRange;
+ chndl->val[opt_tl_x].w = init_tl_x;
+
+ /* opt_tl_y */
+ od = &chndl->opt[opt_tl_y];
+ od->name = SANE_NAME_SCAN_TL_Y;
+ od->title = SANE_TITLE_SCAN_TL_Y;
+ od->desc = SANE_DESC_SCAN_TL_Y;
+ od->type = SANE_TYPE_FIXED;
+ od->unit = SANE_UNIT_MM;
+ od->size = sizeof (SANE_Word);
+ od->cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+ od->constraint_type = SANE_CONSTRAINT_RANGE;
+ od->constraint.range = &heightRange;
+ chndl->val[opt_tl_y].w = init_tl_y;
+
+ /* opt_br_x */
+ od = &chndl->opt[opt_br_x];
+ od->name = SANE_NAME_SCAN_BR_X;
+ od->title = SANE_TITLE_SCAN_BR_X;
+ od->desc = SANE_DESC_SCAN_BR_X;
+ od->type = SANE_TYPE_FIXED;
+ od->unit = SANE_UNIT_MM;
+ od->size = sizeof (SANE_Word);
+ od->cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+ od->constraint_type = SANE_CONSTRAINT_RANGE;
+ od->constraint.range = &widthRange;
+ chndl->val[opt_br_x].w = init_br_x;
+
+ /* opt_br_y */
+ od = &chndl->opt[opt_br_y];
+ od->name = SANE_NAME_SCAN_BR_Y;
+ od->title = SANE_TITLE_SCAN_BR_Y;
+ od->desc = SANE_DESC_SCAN_BR_Y;
+ od->type = SANE_TYPE_FIXED;
+ od->unit = SANE_UNIT_MM;
+ od->size = sizeof (SANE_Word);
+ od->cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+ od->constraint_type = SANE_CONSTRAINT_RANGE;
+ od->constraint.range = &heightRange;
+ chndl->val[opt_br_y].w = init_br_y;
+
+ DBG (2, "end init_options: chndl=%p\n", (void *) chndl);
+
+ return SANE_STATUS_GOOD;
+}
+
+SANE_Status
+sane_open (SANE_String_Const devicename, SANE_Handle * handle)
+{
+ Canon_Device *dev;
+ SANE_Status status;
+ Canon_Scanner *scanner;
+
+ DBG (3, "sane_open\n");
+
+ if (devicename[0]) /* search for devicename */
+ {
+ DBG (4, "sane_open: devicename=%s\n", devicename);
+
+ for (dev = first_dev; dev; dev = dev->next)
+ if (strcmp (dev->sane.name, devicename) == 0)
+ break;
+
+ if (!dev)
+ {
+ status = attach_scanner (devicename, &dev);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+ }
+ }
+ else
+ {
+ DBG (2, "sane_open: no devicename, opening first device\n");
+ dev = first_dev;
+ }
+
+ if (!dev)
+ return SANE_STATUS_INVAL;
+
+ scanner = malloc (sizeof (*scanner));
+
+ if (!scanner)
+ return SANE_STATUS_NO_MEM;
+
+ memset (scanner, 0, sizeof (*scanner));
+ scanner->device = dev;
+
+ status = CANON_open_device (&scanner->scan, dev->sane.name);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (scanner);
+ return status;
+ }
+
+ status = init_options (&scanner->scan);
+
+ *handle = scanner;
+
+ /* insert newly opened handle into list of open handles: */
+ scanner->next = first_handle;
+
+ first_handle = scanner;
+
+ return status;
+}
+
+static void
+print_options (CANON_Handle * chndl)
+{
+ SANE_Option_Descriptor *od;
+ SANE_Word option_number;
+ SANE_Char caps[1024];
+
+ for (option_number = 0; option_number < num_options; option_number++)
+ {
+ od = &chndl->opt[option_number];
+ DBG (50, "-----> number: %d\n", option_number);
+ DBG (50, " name: `%s'\n", od->name);
+ DBG (50, " title: `%s'\n", od->title);
+ DBG (50, " description: `%s'\n", od->desc);
+ DBG (50, " type: %s\n",
+ od->type == SANE_TYPE_BOOL ? "SANE_TYPE_BOOL" :
+ od->type == SANE_TYPE_INT ? "SANE_TYPE_INT" :
+ od->type == SANE_TYPE_FIXED ? "SANE_TYPE_FIXED" :
+ od->type == SANE_TYPE_STRING ? "SANE_TYPE_STRING" :
+ od->type == SANE_TYPE_BUTTON ? "SANE_TYPE_BUTTON" :
+ od->type == SANE_TYPE_GROUP ? "SANE_TYPE_GROUP" : "unknown");
+ DBG (50, " unit: %s\n",
+ od->unit == SANE_UNIT_NONE ? "SANE_UNIT_NONE" :
+ od->unit == SANE_UNIT_PIXEL ? "SANE_UNIT_PIXEL" :
+ od->unit == SANE_UNIT_BIT ? "SANE_UNIT_BIT" :
+ od->unit == SANE_UNIT_MM ? "SANE_UNIT_MM" :
+ od->unit == SANE_UNIT_DPI ? "SANE_UNIT_DPI" :
+ od->unit == SANE_UNIT_PERCENT ? "SANE_UNIT_PERCENT" :
+ od->unit == SANE_UNIT_MICROSECOND ? "SANE_UNIT_MICROSECOND" :
+ "unknown");
+ DBG (50, " size: %d\n", od->size);
+ caps[0] = '\0';
+ if (od->cap & SANE_CAP_SOFT_SELECT)
+ strcat (caps, "SANE_CAP_SOFT_SELECT ");
+ if (od->cap & SANE_CAP_HARD_SELECT)
+ strcat (caps, "SANE_CAP_HARD_SELECT ");
+ if (od->cap & SANE_CAP_SOFT_DETECT)
+ strcat (caps, "SANE_CAP_SOFT_DETECT ");
+ if (od->cap & SANE_CAP_EMULATED)
+ strcat (caps, "SANE_CAP_EMULATED ");
+ if (od->cap & SANE_CAP_AUTOMATIC)
+ strcat (caps, "SANE_CAP_AUTOMATIC ");
+ if (od->cap & SANE_CAP_INACTIVE)
+ strcat (caps, "SANE_CAP_INACTIVE ");
+ if (od->cap & SANE_CAP_ADVANCED)
+ strcat (caps, "SANE_CAP_ADVANCED ");
+ DBG (50, " capabilities: %s\n", caps);
+ DBG (50, "constraint type: %s\n",
+ od->constraint_type == SANE_CONSTRAINT_NONE ?
+ "SANE_CONSTRAINT_NONE" :
+ od->constraint_type == SANE_CONSTRAINT_RANGE ?
+ "SANE_CONSTRAINT_RANGE" :
+ od->constraint_type == SANE_CONSTRAINT_WORD_LIST ?
+ "SANE_CONSTRAINT_WORD_LIST" :
+ od->constraint_type == SANE_CONSTRAINT_STRING_LIST ?
+ "SANE_CONSTRAINT_STRING_LIST" : "unknown");
+ if (od->type == SANE_TYPE_INT)
+ DBG (50, " value: %d\n", chndl->val[option_number].w);
+ else if (od->type == SANE_TYPE_FIXED)
+ DBG (50, " value: %f\n",
+ SANE_UNFIX (chndl->val[option_number].w));
+ else if (od->type == SANE_TYPE_STRING)
+ DBG (50, " value: %s\n", chndl->val[option_number].s);
+ }
+}
+
+void
+sane_close (SANE_Handle handle)
+{
+ Canon_Scanner *prev, *scanner;
+ SANE_Status res;
+
+ DBG (3, "sane_close\n");
+
+ scanner = handle;
+ print_options (&scanner->scan);
+
+ if (!first_handle)
+ {
+ DBG (1, "ERROR: sane_close: no handles opened\n");
+ return;
+ }
+
+ /* remove handle from list of open handles: */
+
+ prev = NULL;
+
+ for (scanner = first_handle; scanner; scanner = scanner->next)
+ {
+ if (scanner == handle)
+ break;
+
+ prev = scanner;
+ }
+
+ if (!scanner)
+ {
+ DBG (1, "ERROR: sane_close: invalid handle %p\n", handle);
+ return; /* oops, not a handle we know about */
+ }
+
+ if (prev)
+ prev->next = scanner->next;
+ else
+ first_handle = scanner->next;
+
+ res = CANON_close_device (&scanner->scan);
+ DBG (3, "CANON_close_device returned: %d\n", res);
+ free (scanner);
+}
+
+const SANE_Option_Descriptor *
+sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
+{
+ Canon_Scanner *scanner = handle;
+ CANON_Handle *chndl = &scanner->scan;
+
+
+ DBG (4, "sane_get_option_descriptor: handle=%p, option = %d\n",
+ (void *) handle, option);
+ if (option < 0 || option >= num_options)
+ {
+ DBG (3, "sane_get_option_descriptor: option < 0 || "
+ "option > num_options\n");
+ return 0;
+ }
+
+ return &chndl->opt[option];
+}
+
+SANE_Status
+sane_control_option (SANE_Handle handle, SANE_Int option, SANE_Action action,
+ void *value, SANE_Int * info)
+{
+ Canon_Scanner *scanner = handle;
+ CANON_Handle *chndl = &scanner->scan;
+
+ SANE_Int myinfo = 0;
+ SANE_Status status;
+
+ DBG (4, "sane_control_option: handle=%p, opt=%d, act=%d, val=%p, info=%p\n",
+ (void *) handle, option, action, (void *) value, (void *) info);
+
+ if (option < 0 || option >= num_options)
+ {
+ DBG (1, "sane_control_option: option < 0 || option > num_options\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ if (!SANE_OPTION_IS_ACTIVE (chndl->opt[option].cap))
+ {
+ DBG (1, "sane_control_option: option is inactive\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ if (chndl->opt[option].type == SANE_TYPE_GROUP)
+ {
+ DBG (1, "sane_control_option: option is a group\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ switch (action)
+ {
+ case SANE_ACTION_SET_VALUE:
+ if (!SANE_OPTION_IS_SETTABLE (chndl->opt[option].cap))
+ {
+ DBG (1, "sane_control_option: option is not setable\n");
+ return SANE_STATUS_INVAL;
+ }
+ status = sanei_constrain_value (&chndl->opt[option], value, &myinfo);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (3, "sane_control_option: sanei_constrain_value returned %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ switch (option)
+ {
+ case opt_tl_x: /* Fixed with parameter reloading */
+ case opt_tl_y:
+ case opt_br_x:
+ case opt_br_y:
+ if (chndl->val[option].w == *(SANE_Fixed *) value)
+ {
+ DBG (4, "sane_control_option: option %d (%s) not changed\n",
+ option, chndl->opt[option].name);
+ break;
+ }
+ chndl->val[option].w = *(SANE_Fixed *) value;
+ myinfo |= SANE_INFO_RELOAD_PARAMS;
+ DBG (4, "sane_control_option: set option %d (%s) to %.0f %s\n",
+ option, chndl->opt[option].name,
+ SANE_UNFIX (*(SANE_Fixed *) value),
+ chndl->opt[option].unit == SANE_UNIT_MM ? "mm" : "dpi");
+ break;
+ case opt_non_blocking:
+ if (chndl->val[option].w == *(SANE_Bool *) value)
+ {
+ DBG (4, "sane_control_option: option %d (%s) not changed\n",
+ option, chndl->opt[option].name);
+ break;
+ }
+ chndl->val[option].w = *(SANE_Bool *) value;
+ DBG (4, "sane_control_option: set option %d (%s) to %s\n",
+ option, chndl->opt[option].name,
+ *(SANE_Bool *) value == SANE_TRUE ? "true" : "false");
+ break;
+ case opt_resolution:
+ case opt_threshold:
+ if (chndl->val[option].w == *(SANE_Int *) value)
+ {
+ DBG (4, "sane_control_option: option %d (%s) not changed\n",
+ option, chndl->opt[option].name);
+ break;
+ }
+ chndl->val[option].w = *(SANE_Int *) value;
+ myinfo |= SANE_INFO_RELOAD_PARAMS;
+ myinfo |= SANE_INFO_RELOAD_OPTIONS;
+ DBG (4, "sane_control_option: set option %d (%s) to %d\n",
+ option, chndl->opt[option].name, *(SANE_Int *) value);
+ break;
+ case opt_mode:
+ if (strcmp (chndl->val[option].s, value) == 0)
+ {
+ DBG (4, "sane_control_option: option %d (%s) not changed\n",
+ option, chndl->opt[option].name);
+ break;
+ }
+ strcpy (chndl->val[option].s, (SANE_String) value);
+
+ if (strcmp (chndl->val[option].s, SANE_VALUE_SCAN_MODE_LINEART) ==
+ 0)
+ {
+ chndl->opt[opt_threshold].cap &= ~SANE_CAP_INACTIVE;
+ chndl->graymode = 2;
+ }
+ if (strcmp (chndl->val[option].s, SANE_VALUE_SCAN_MODE_COLOR) == 0)
+ {
+ chndl->opt[opt_threshold].cap |= SANE_CAP_INACTIVE;
+ chndl->graymode = 0;
+ }
+ if (strcmp (chndl->val[option].s, SANE_VALUE_SCAN_MODE_GRAY) == 0)
+ {
+ chndl->opt[opt_threshold].cap |= SANE_CAP_INACTIVE;
+ chndl->graymode = 1;
+ }
+
+
+ myinfo |= SANE_INFO_RELOAD_PARAMS;
+ myinfo |= SANE_INFO_RELOAD_OPTIONS;
+ DBG (4, "sane_control_option: set option %d (%s) to %s\n",
+ option, chndl->opt[option].name, (SANE_String) value);
+ break;
+ default:
+ DBG (1, "sane_control_option: trying to set unexpected option\n");
+ return SANE_STATUS_INVAL;
+ }
+ break;
+
+ case SANE_ACTION_GET_VALUE:
+ switch (option)
+ {
+ case opt_num_opts:
+ *(SANE_Word *) value = num_options;
+ DBG (4, "sane_control_option: get option 0, value = %d\n",
+ num_options);
+ break;
+ case opt_tl_x: /* Fixed options */
+ case opt_tl_y:
+ case opt_br_x:
+ case opt_br_y:
+ {
+ *(SANE_Fixed *) value = chndl->val[option].w;
+ DBG (4,
+ "sane_control_option: get option %d (%s), value=%.1f %s\n",
+ option, chndl->opt[option].name,
+ SANE_UNFIX (*(SANE_Fixed *) value),
+ chndl->opt[option].unit ==
+ SANE_UNIT_MM ? "mm" : SANE_UNIT_DPI ? "dpi" : "");
+ break;
+ }
+ case opt_non_blocking:
+ *(SANE_Bool *) value = chndl->val[option].w;
+ DBG (4,
+ "sane_control_option: get option %d (%s), value=%s\n",
+ option, chndl->opt[option].name,
+ *(SANE_Bool *) value == SANE_TRUE ? "true" : "false");
+ break;
+ case opt_mode: /* String (list) options */
+ strcpy (value, chndl->val[option].s);
+ DBG (4, "sane_control_option: get option %d (%s), value=`%s'\n",
+ option, chndl->opt[option].name, (SANE_String) value);
+ break;
+ case opt_resolution:
+ case opt_threshold:
+ *(SANE_Int *) value = chndl->val[option].w;
+ DBG (4, "sane_control_option: get option %d (%s), value=%d\n",
+ option, chndl->opt[option].name, *(SANE_Int *) value);
+ break;
+ default:
+ DBG (1, "sane_control_option: trying to get unexpected option\n");
+ return SANE_STATUS_INVAL;
+ }
+ break;
+ default:
+ DBG (1, "sane_control_option: trying unexpected action %d\n", action);
+ return SANE_STATUS_INVAL;
+ }
+
+ if (info)
+ *info = myinfo;
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+sane_get_parameters (SANE_Handle handle, SANE_Parameters * params)
+{
+ Canon_Scanner *hndl = handle; /* Eliminate compiler warning */
+ CANON_Handle *chndl = &hndl->scan;
+
+ int rc = SANE_STATUS_GOOD;
+ int w = SANE_UNFIX (chndl->val[opt_br_x].w -
+ chndl->val[opt_tl_x].w) / MM_IN_INCH *
+ chndl->val[opt_resolution].w;
+ int h =
+ SANE_UNFIX (chndl->val[opt_br_y].w -
+ chndl->val[opt_tl_y].w) / MM_IN_INCH *
+ chndl->val[opt_resolution].w;
+
+ DBG (3, "sane_get_parameters\n");
+ chndl->params.depth = 8;
+ chndl->params.last_frame = SANE_TRUE;
+ chndl->params.pixels_per_line = w;
+ chndl->params.lines = h;
+
+ if (chndl->graymode == 1)
+ {
+ chndl->params.format = SANE_FRAME_GRAY;
+ chndl->params.bytes_per_line = w;
+ }
+ else if (chndl->graymode == 2)
+ {
+ chndl->params.format = SANE_FRAME_GRAY;
+ w /= 8;
+
+ if ((chndl->params.pixels_per_line % 8) != 0)
+ w++;
+
+ chndl->params.bytes_per_line = w;
+ chndl->params.depth = 1;
+ }
+ else
+ {
+ chndl->params.format = SANE_FRAME_RGB;
+ chndl->params.bytes_per_line = w * 3;
+ }
+
+ *params = chndl->params;
+ DBG (1, "%d\n", chndl->params.format);
+ return rc;
+}
+
+
+SANE_Status
+sane_start (SANE_Handle handle)
+{
+ Canon_Scanner *scanner = handle;
+ CANON_Handle *chndl = &scanner->scan;
+ SANE_Status res;
+
+ DBG (3, "sane_start\n");
+
+ res = sane_get_parameters (handle, &chndl->params);
+ res = CANON_set_scan_parameters (&scanner->scan);
+
+ if (res != SANE_STATUS_GOOD)
+ return res;
+
+ return CANON_start_scan (&scanner->scan);
+}
+
+
+SANE_Status
+sane_read (SANE_Handle handle, SANE_Byte * data,
+ SANE_Int max_length, SANE_Int * length)
+{
+ Canon_Scanner *scanner = handle;
+ return CANON_read (&scanner->scan, data, max_length, length);
+}
+
+
+void
+sane_cancel (SANE_Handle handle)
+{
+ DBG (3, "sane_cancel: handle = %p\n", handle);
+ DBG (3, "sane_cancel: cancelling is unsupported in this backend\n");
+}
+
+
+SANE_Status
+sane_set_io_mode (SANE_Handle handle, SANE_Bool non_blocking)
+{
+ DBG (3, "sane_set_io_mode: handle = %p, non_blocking = %d\n", handle,
+ non_blocking);
+ if (non_blocking != SANE_FALSE)
+ return SANE_STATUS_UNSUPPORTED;
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+sane_get_select_fd (SANE_Handle handle, SANE_Int * fd)
+{
+ handle = handle; /* silence gcc */
+ fd = fd; /* silence gcc */
+ return SANE_STATUS_UNSUPPORTED;
+}