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sane-project-backends/backend/canon_lide70.c

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25 KiB
C
Czysty Bezpośredni odnośnik Wina Historia

/* 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, see <https://www.gnu.org/licenses/>.
This file implements a SANE backend for the Canon CanoScan LiDE 70 and 600 */
#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",
SANE_CURRENT_MAJOR, SANE_CURRENT_MINOR, BUILD, PACKAGE_STRING);
if (version_code)
*version_code = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, SANE_CURRENT_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;
if (chndl->productcode == 0x2224)
{
resolution_list[0] = 4;
}
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" :
(chndl->opt[option].unit == 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;
SANE_Status 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)
{
(void) handle; /* silence gcc */
(void) fd; /* silence gcc */
return SANE_STATUS_UNSUPPORTED;
}
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