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sane-project-backends/backend/s9036.c

1328 wiersze
32 KiB
C
Czysty Wina Historia

/* sane - Scanner Access Now Easy.
This file (C) 1997 Ingo Schneider
This file is part of the SANE package.
SANE 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.
SANE 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 sane; see the file COPYING. If not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
This file implements a SANE backend for Siemens 9036 flatbed scanners. */
#include "sane/config.h"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#ifndef PATH_MAX
# define PATH_MAX 1024
#endif
#include "sane/sane.h"
#include "sane/sanei.h"
#include "sane/sanei_config.h"
#include "sane/saneopts.h"
#include "sane/sanei_scsi.h"
#include "s9036.h"
#define BACKEND_NAME s9036
#include "sane/sanei_backend.h"
#define MM_PER_INCH 25.4
#undef Byte
#define Byte SANE_Byte
static int num_devices;
static S9036_Device *s9036_devices;
/* sets loc_s bytes long value at offset loc in scsi command to value size */
static void
set_size (Byte * loc, int loc_s, size_t size)
{
int i;
for (i = 0; i < loc_s; i++)
{
loc[loc_s - i - 1] = (size >> (i * 8)) & 0xff;
}
}
static long
reserve_unit (int fd)
{
const Byte scsi_reserve[] =
{
0x16, 0x00, 0x00, 0x00, 0x00, 0x00
};
DBG (3, "reserve_unit()\n");
return sanei_scsi_cmd (fd, scsi_reserve, sizeof (scsi_reserve), 0, 0);
}
static long
release_unit (int fd)
{
const Byte scsi_release[] =
{
0x17, 0x00, 0x00, 0x00, 0x00, 0x00
};
DBG (3, "release_unit()\n");
return sanei_scsi_cmd (fd, scsi_release, sizeof (scsi_release), 0, 0);
}
static SANE_Status
test_ready (int fd)
{
static const Byte scsi_test_ready[] =
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
SANE_Status status;
int try;
for (try = 0; try < 1000; ++try)
{
DBG (3, "test_ready: sending TEST_UNIT_READY\n");
status = sanei_scsi_cmd (fd, scsi_test_ready, sizeof (scsi_test_ready),
0, 0);
switch (status)
{
case SANE_STATUS_DEVICE_BUSY:
usleep (100000); /* retry after 100ms */
break;
case SANE_STATUS_GOOD:
return status;
default:
DBG (1, "test_ready: test unit ready failed (%s)\n",
sane_strstatus (status));
return status;
}
}
DBG (1, "test_ready: timed out after %d attempts\n", try);
return SANE_STATUS_IO_ERROR;
}
static SANE_Status
sense_handler (int scsi_fd, u_char *result, void *arg)
{
if (result[0])
{
DBG (0, "sense_handler() : sense code = %02x\n", result[0]);
return SANE_STATUS_IO_ERROR;
}
else
{
return SANE_STATUS_GOOD;
}
}
static SANE_Status
stop_scan (int fd)
{
/* XXX don't know how to stop the scanner. To be tested ! */
#if 0
const Byte scsi_rewind[] =
{
0x01, 0x00, 0x00, 0x00, 0x00, 0x00
};
DBG (1, "Trying to stop scanner...\n");
return sanei_scsi_cmd (fd, scsi_rewind, sizeof (scsi_rewind), 0, 0);
#else
return SANE_STATUS_GOOD;
#endif
}
static SANE_Status
start_scan (int fd, SANE_Bool cont)
{
struct
{
/* Command */
Byte cmd;
Byte lun;
Byte res[2];
Byte tr_len;
Byte ctrl;
/* Data */
Byte wid;
}
scsi_start_scan;
memset (&scsi_start_scan, 0, sizeof (scsi_start_scan));
scsi_start_scan.cmd = 0x1b;
scsi_start_scan.tr_len = 1;
scsi_start_scan.wid = 0;
scsi_start_scan.ctrl = (cont == SANE_TRUE) ? 0x80 : 0x00;
DBG (1, "Starting scanner ...\n");
return sanei_scsi_cmd (fd, &scsi_start_scan, sizeof (scsi_start_scan), 0, 0);
}
static void
wait_ready (int fd)
{
# define WAIT_READY_READ_SIZE 4
const Byte scsi_read[] =
{
0x28, 0x00, /* opcode, lun */
0x80, /* data type 80 == read time left */
0x00, 0x00, 0x00, /* reserved */
0x00, 0x00, WAIT_READY_READ_SIZE, /* transfer length */
0x00, /* control byte */
};
Byte result[WAIT_READY_READ_SIZE];
size_t size = WAIT_READY_READ_SIZE;
SANE_Status status;
while (1)
{
status = sanei_scsi_cmd (fd, scsi_read, sizeof (scsi_read),
result, &size);
if (status != SANE_STATUS_GOOD || size != WAIT_READY_READ_SIZE)
{
/*
Command failed, the assembler code of the windows scan library
ignores this condition, and so do I
*/
break;
}
else
{
/* left is the amount of seconds left till the scanner is
ready * 100 */
int left = result[2] * 256 + result[3];
DBG (1, "wait_ready() : %d left...\n", left);
if (!left)
break;
/* We delay only for half the given time */
else if (left < 200)
usleep (left * 5000);
else
sleep (left / 200);
}
}
return;
}
static SANE_Status
get_read_sizes (int fd, int *lines_available, int *bpl, int *total_lines)
{
# define GET_READ_SIZES_READ_SIZE 24
const Byte scsi_read[] =
{
0x28, 0x00, /* opcode, lun */
0x81, /* data type 81 == read time left */
0x00, 0x00, 0x00, /* reserved */
0x00, 0x00, GET_READ_SIZES_READ_SIZE, /* transfer length */
0x00, /* control byte */
};
Byte result[GET_READ_SIZES_READ_SIZE];
size_t size = GET_READ_SIZES_READ_SIZE;
SANE_Status status;
status = sanei_scsi_cmd (fd, scsi_read, sizeof (scsi_read), result, &size);
if (status != SANE_STATUS_GOOD || size != GET_READ_SIZES_READ_SIZE)
{
/* Command failed */
return SANE_STATUS_IO_ERROR;
}
else
{
*lines_available = result[14] * 256 + result[15];
*bpl = result[12] * 256 + result[13];
if (total_lines)
*total_lines = result[10] * 256 + result[11];
}
DBG (1, "get_read_sizes() : %d of %d, %d\n",
*lines_available, total_lines ? *total_lines : -1, *bpl);
return SANE_STATUS_GOOD;
}
static SANE_Status
set_window (S9036_Scanner * s)
/* This function sets and sends the window for scanning */
{
double pixels_per_mm = (double) s->val[OPT_RESOLUTION] / MM_PER_INCH;
SANE_Bool auto_bright = !(s->opt[OPT_BRIGHT_ADJUST].cap & SANE_CAP_INACTIVE);
SANE_Bool auto_contr = !(s->opt[OPT_CONTR_ADJUST].cap & SANE_CAP_INACTIVE);
/* ranges down 255 (dark) down to 1(bright) */
int brightness = auto_bright ? 0 : (SANE_UNFIX (s->val[OPT_BRIGHTNESS])
* -1.27 + 128.5);
/* ranges from 1 (little contrast) up to 255 (much contrast) */
int contrast = auto_contr ? 0 : (SANE_UNFIX (s->val[OPT_CONTRAST])
* 1.27 + 128.5);
/* ranges from 40 (dark) down to 0 (bright) */
int bright_adjust = auto_bright ? 20 - s->val[OPT_BRIGHT_ADJUST] : 0;
/* ranges from 20 (little contrast) down to -20 = 235 (much contrast) */
int contr_adjust = auto_contr ? (256 - s->val[OPT_CONTR_ADJUST]) % 256 : 0;
/* Warning ! The following structur SEEMS to be an valid SCSI-2
SET_WINDOW command. But e.g. the limits for the window are only
2 Bytes instead of 4. The scanner was built at about 1990, so
SCSI-2 wasn't available for development...
*/
struct
{
Byte cmd;
Byte lun;
Byte re1[4];
Byte tr_len[3];
Byte ctrl;
Byte re2[6];
Byte wd_len[2];
struct
{
Byte wid;
Byte autobit;
Byte x_axis_res[2];
Byte y_axis_res[2];
Byte x_axis_ul[2];
Byte y_axis_ul[2];
Byte wwidth[2];
Byte wlength[2];
Byte contrast;
Byte threshold;
Byte brightness;
Byte image_comp;
Byte bpp;
Byte ht_pattern;
Byte rif_padding;
Byte three;
Byte null1[2];
Byte null2[8];
Byte null_eins;
Byte eins_null;
Byte contr_adjust;
Byte bright_adjust;
Byte null3;
}
wd;
}
cmd;
DBG (3,
"Setting parameters: bpp %d, res %d, bri %d, con %d, bad %d, cad %d\n",
s->val[OPT_DEPTH], s->val[OPT_RESOLUTION],
brightness, contrast, bright_adjust, contr_adjust);
memset (&cmd, 0, sizeof (cmd));
/* Commands and sizes. Original comment in German: Kommando und Groessen. */
cmd.cmd = 0x24;
set_size (cmd.tr_len, 3, 37 + 8);
set_size (cmd.wd_len, 2, 37);
/* Resolution. Original comment in German: Aufloesung */
set_size (cmd.wd.x_axis_res, 2, s->val[OPT_RESOLUTION]);
set_size (cmd.wd.y_axis_res, 2, s->val[OPT_RESOLUTION]);
/* Scan window position/size. Original comment in German:
Fensterposition / Groesse */
set_size (cmd.wd.x_axis_ul, 2,
SANE_UNFIX (s->val[OPT_TL_X]) * pixels_per_mm + 0.5);
set_size (cmd.wd.y_axis_ul, 2,
SANE_UNFIX (s->val[OPT_TL_Y]) * pixels_per_mm + 0.5);
set_size (cmd.wd.wwidth, 2, SANE_UNFIX (s->val[OPT_BR_X] - s->val[OPT_TL_X])
* pixels_per_mm + 0.5);
set_size (cmd.wd.wlength, 2, SANE_UNFIX (s->val[OPT_BR_Y] - s->val[OPT_TL_Y])
* pixels_per_mm + 0.5);
cmd.wd.contrast = contrast;
cmd.wd.threshold = 0x00;
cmd.wd.brightness = brightness;
cmd.wd.image_comp = (s->val[OPT_DEPTH] == 1) ? 0 : 2;
cmd.wd.bpp = s->val[OPT_DEPTH];
cmd.wd.ht_pattern = 0;
cmd.wd.rif_padding = 0x00;
cmd.wd.three = 3;
cmd.wd.null_eins = (s->val[OPT_DEPTH] == 1) ? 0 : 1;
cmd.wd.eins_null = (s->val[OPT_DEPTH] == 1) ? 1 : 0;
cmd.wd.contr_adjust = contr_adjust;
cmd.wd.bright_adjust = bright_adjust;
return sanei_scsi_cmd (s->fd, &cmd, sizeof (cmd), 0, 0);
}
/* Tell scanner to scan more data. Original comment in German:
Fordert Scanner auf, weiter zu scannen... */
static SANE_Status
request_more_data (S9036_Scanner * s)
{
SANE_Status status;
int lines_available;
int bytes_per_line;
status = start_scan (s->fd, SANE_TRUE);
if (status != SANE_STATUS_GOOD)
return status;
wait_ready (s->fd);
status = get_read_sizes (s->fd, &lines_available, &bytes_per_line, 0);
if (!lines_available || bytes_per_line != s->params.bytes_per_line)
{
return SANE_STATUS_INVAL;
}
if (s->lines_read + lines_available > s->params.lines)
return SANE_STATUS_INVAL;
s->lines_in_scanner = lines_available;
return SANE_STATUS_GOOD;
}
/* May only be called when there is at least one row of data to
be read.
Original comment in German: Darf nur aufgerufen werden, wenn
wirklich noch Zeilen zu scannen/lesen sind ! */
static SANE_Status
read_more_data (S9036_Scanner * s)
{
static Byte cmd[] =
{
0x28, 0x00, /* opcode, lun */
0x00, /* data type 80 == read time left */
0x00, 0x00, 0x00, /* reserved */
0x00, 0x00, 0x00, /* transfer length */
0x00, /* control byte */
};
SANE_Status status;
size_t size;
int lines_read;
int bpl = s->params.bytes_per_line;
int i;
if (s->lines_in_scanner == 0)
{
/* No lines in scanner ? scan some more */
status = request_more_data (s);
if (status != SANE_STATUS_GOOD)
return status;
}
/* We try this 3 times */
while (1)
{
/* Request as much lines as would fit into the buffer ... */
lines_read = s->bufsize / bpl;
/* buffer is too small for one line: we can't handle this */
if (!lines_read)
return SANE_STATUS_INVAL;
/* We only request as many lines as there are already scanned */
if (lines_read > s->lines_in_scanner)
lines_read = s->lines_in_scanner;
set_size (&cmd[6], 3, lines_read);
size = lines_read * s->params.bytes_per_line;
DBG (1, "Requesting %d lines, in scanner: %d, total: %d\n", lines_read,
s->lines_in_scanner, s->params.lines);
status = sanei_scsi_cmd (s->fd, cmd, sizeof (cmd), s->buffer, &size);
if (status != SANE_STATUS_GOOD)
{
if (s->bufsize > 4096)
{
DBG (1, "sanei_scsi_cmd(): using 4k buffer\n");
s->bufsize = 4096;
continue;
}
DBG (1, "sanei_scsi_cmd() = %d\n", status);
return SANE_STATUS_IO_ERROR;
}
if (size != lines_read * s->params.bytes_per_line)
{
DBG (1, "sanei_scsi_cmd(): got %lu bytes, expected %d\n",
(u_long) size, lines_read * s->params.bytes_per_line);
return SANE_STATUS_INVAL;
}
DBG (1, "Got %lu bytes\n", (u_long) size);
break;
}
/* Reverse: */
if (s->params.depth != 1)
for (i = 0; i < size; i++)
s->buffer[i] = (255 - s->buffer[i]);
s->in_buffer += size;
s->lines_in_scanner -= lines_read;
s->lines_read += lines_read;
return SANE_STATUS_GOOD;
}
static SANE_Status
attach (const char *devname, S9036_Device ** devp)
{
#define ATTACH_SCSI_INQ_LEN 55
const Byte scsi_inquiry[] =
{
0x12, 0x00, 0x00, 0x00, ATTACH_SCSI_INQ_LEN, 0x00
};
Byte result[ATTACH_SCSI_INQ_LEN];
int fd;
S9036_Device *dev;
SANE_Status status;
size_t size;
int i;
for (dev = s9036_devices; dev; dev = dev->next)
if (strcmp (dev->sane.name, devname) == 0)
{
if (devp)
*devp = dev;
return SANE_STATUS_GOOD;
}
DBG (3, "attach: opening %s\n", devname);
status = sanei_scsi_open (devname, &fd, sense_handler, 0);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "attach: open failed (%s)\n", sane_strstatus (status));
return SANE_STATUS_INVAL;
}
DBG (3, "attach: sending INQUIRY\n");
size = sizeof (result);
status = sanei_scsi_cmd (fd, scsi_inquiry, sizeof (scsi_inquiry),
result, &size);
if (status != SANE_STATUS_GOOD || size != ATTACH_SCSI_INQ_LEN)
{
DBG (1, "attach: inquiry failed (%s)\n", sane_strstatus (status));
sanei_scsi_close (fd);
return status;
}
status = test_ready (fd);
sanei_scsi_close (fd);
if (status != SANE_STATUS_GOOD)
return status;
/* The structure send by the scanner after inquiry is not SCSI-2
compatible. The standard manufacturer/model fields are no ASCII
strings, but ? At offset 36 my SIEMENS scanner identifies as an
AGFA one ?! */
if (result[0] != 6 || strncmp (result + 36, "AGFA03", 6))
{
DBG (1, "attach: device doesn't look like a Siemens 9036 scanner\n");
return SANE_STATUS_INVAL;
}
DBG (3, "Inquiry data:\n");
for (i = 5; i < 55; i += 10)
DBG (3, "%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
result[i], result[i + 1], result[i + 2], result[i + 3], result[i + 4],
result[i + 5], result[i + 6], result[i + 7], result[i + 8],
result[i + 9]);
dev = malloc (sizeof (*dev));
if (!dev)
return SANE_STATUS_NO_MEM;
memset (dev, 0, sizeof (*dev));
dev->sane.name = strdup (devname);
dev->sane.vendor = "Siemens";
dev->sane.model = "9036";
dev->sane.type = "flatbed scanner";
dev->handle = 0;
DBG (3, "attach: found S9036 scanner model\n");
++num_devices;
dev->next = s9036_devices;
s9036_devices = dev;
if (devp)
*devp = dev;
return SANE_STATUS_GOOD;
}
static SANE_Status
do_cancel (S9036_Scanner * s)
{
s->scanning = SANE_FALSE;
if (s->fd >= 0)
{
stop_scan (s->fd);
release_unit (s->fd);
sanei_scsi_close (s->fd);
s->fd = -1;
}
if (s->buffer)
{
free (s->buffer);
s->buffer = 0;
}
return SANE_STATUS_CANCELLED;
}
static SANE_Status
init_options (S9036_Scanner * s)
{
int i;
/* Hardware Limitations: must be static ! */
static const SANE_Int depth_list[] =
{2, 1, 8};
static const SANE_Int dpi_list[] =
{8, 100, 200, 300, 400, 500, 600, 700, 800};
static const SANE_Range percentage_range =
{
-100 << SANE_FIXED_SCALE_SHIFT, /* minimum */
100 << SANE_FIXED_SCALE_SHIFT, /* maximum */
1 << SANE_FIXED_SCALE_SHIFT /* quantization */
};
static const SANE_Range automatic_adjust_range =
{-20, 20, 1};
static const SANE_Range x_range =
{0, SANE_FIX (8.27 * MM_PER_INCH), 0};
static const SANE_Range y_range =
{0, SANE_FIX (12.72 * MM_PER_INCH), 0};
/* ------ */
memset (s->opt, 0, sizeof (s->opt));
memset (s->val, 0, sizeof (s->val));
for (i = 0; i < NUM_OPTIONS; ++i)
{
s->opt[i].size = sizeof (SANE_Word);
s->opt[i].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT;
}
s->opt[OPT_NUM_OPTS].title = SANE_TITLE_NUM_OPTIONS;
s->opt[OPT_NUM_OPTS].desc = SANE_DESC_NUM_OPTIONS;
s->opt[OPT_NUM_OPTS].cap = SANE_CAP_SOFT_DETECT;
s->val[OPT_NUM_OPTS] = NUM_OPTIONS;
/* "Mode" group: */
s->opt[OPT_MODE_GROUP].title = "Scan Mode";
s->opt[OPT_MODE_GROUP].desc = "";
s->opt[OPT_MODE_GROUP].type = SANE_TYPE_GROUP;
s->opt[OPT_MODE_GROUP].cap = 0;
s->opt[OPT_MODE_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
/* depth */
s->opt[OPT_DEPTH].name = SANE_NAME_BIT_DEPTH;
s->opt[OPT_DEPTH].title = SANE_TITLE_BIT_DEPTH;
s->opt[OPT_DEPTH].desc = SANE_DESC_BIT_DEPTH;
s->opt[OPT_DEPTH].type = SANE_TYPE_INT;
s->opt[OPT_DEPTH].unit = SANE_UNIT_BIT;
s->opt[OPT_DEPTH].constraint_type = SANE_CONSTRAINT_WORD_LIST;
s->opt[OPT_DEPTH].constraint.word_list = depth_list;
s->val[OPT_DEPTH] = 1;
/* resolution */
s->opt[OPT_RESOLUTION].name = SANE_NAME_SCAN_RESOLUTION;
s->opt[OPT_RESOLUTION].title = SANE_TITLE_SCAN_RESOLUTION;
s->opt[OPT_RESOLUTION].desc = SANE_DESC_SCAN_RESOLUTION;
s->opt[OPT_RESOLUTION].type = SANE_TYPE_INT;
s->opt[OPT_RESOLUTION].unit = SANE_UNIT_DPI;
s->opt[OPT_RESOLUTION].constraint_type = SANE_CONSTRAINT_WORD_LIST;
s->opt[OPT_RESOLUTION].constraint.word_list = dpi_list;
s->val[OPT_RESOLUTION] = 100;
/* "Geometry" group: */
s->opt[OPT_GEOMETRY_GROUP].title = "Geometry";
s->opt[OPT_GEOMETRY_GROUP].desc = "";
s->opt[OPT_GEOMETRY_GROUP].type = SANE_TYPE_GROUP;
s->opt[OPT_GEOMETRY_GROUP].cap = SANE_CAP_ADVANCED;
s->opt[OPT_GEOMETRY_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
/* top-left x */
s->opt[OPT_TL_X].name = SANE_NAME_SCAN_TL_X;
s->opt[OPT_TL_X].title = SANE_TITLE_SCAN_TL_X;
s->opt[OPT_TL_X].desc = SANE_DESC_SCAN_TL_X;
s->opt[OPT_TL_X].type = SANE_TYPE_FIXED;
s->opt[OPT_TL_X].unit = SANE_UNIT_MM;
s->opt[OPT_TL_X].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_TL_X].constraint.range = &x_range;
s->val[OPT_TL_X] = 0;
/* top-left y */
s->opt[OPT_TL_Y].name = SANE_NAME_SCAN_TL_Y;
s->opt[OPT_TL_Y].title = SANE_TITLE_SCAN_TL_Y;
s->opt[OPT_TL_Y].desc = SANE_DESC_SCAN_TL_Y;
s->opt[OPT_TL_Y].type = SANE_TYPE_FIXED;
s->opt[OPT_TL_Y].unit = SANE_UNIT_MM;
s->opt[OPT_TL_Y].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_TL_Y].constraint.range = &y_range;
s->val[OPT_TL_Y] = 0;
/* bottom-right x */
s->opt[OPT_BR_X].name = SANE_NAME_SCAN_BR_X;
s->opt[OPT_BR_X].title = SANE_TITLE_SCAN_BR_X;
s->opt[OPT_BR_X].desc = SANE_DESC_SCAN_BR_X;
s->opt[OPT_BR_X].type = SANE_TYPE_FIXED;
s->opt[OPT_BR_X].unit = SANE_UNIT_MM;
s->opt[OPT_BR_X].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_BR_X].constraint.range = &x_range;
s->val[OPT_BR_X] = x_range.max;
/* bottom-right y */
s->opt[OPT_BR_Y].name = SANE_NAME_SCAN_BR_Y;
s->opt[OPT_BR_Y].title = SANE_TITLE_SCAN_BR_Y;
s->opt[OPT_BR_Y].desc = SANE_DESC_SCAN_BR_Y;
s->opt[OPT_BR_Y].type = SANE_TYPE_FIXED;
s->opt[OPT_BR_Y].unit = SANE_UNIT_MM;
s->opt[OPT_BR_Y].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_BR_Y].constraint.range = &y_range;
s->val[OPT_BR_Y] = y_range.max;
/* "Enhancement" group: */
s->opt[OPT_ENHANCEMENT_GROUP].title = "Enhancement";
s->opt[OPT_ENHANCEMENT_GROUP].desc = "";
s->opt[OPT_ENHANCEMENT_GROUP].type = SANE_TYPE_GROUP;
s->opt[OPT_ENHANCEMENT_GROUP].cap = 0;
s->opt[OPT_ENHANCEMENT_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
/* brightness */
s->opt[OPT_BRIGHTNESS].name = SANE_NAME_BRIGHTNESS;
s->opt[OPT_BRIGHTNESS].title = SANE_TITLE_BRIGHTNESS;
s->opt[OPT_BRIGHTNESS].desc = SANE_DESC_BRIGHTNESS;
s->opt[OPT_BRIGHTNESS].type = SANE_TYPE_FIXED;
s->opt[OPT_BRIGHTNESS].cap |= SANE_CAP_AUTOMATIC;
s->opt[OPT_BRIGHTNESS].unit = SANE_UNIT_PERCENT;
s->opt[OPT_BRIGHTNESS].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_BRIGHTNESS].constraint.range = &percentage_range;
s->val[OPT_BRIGHTNESS] = 0;
/* contrast */
s->opt[OPT_CONTRAST].name = SANE_NAME_CONTRAST;
s->opt[OPT_CONTRAST].title = SANE_TITLE_CONTRAST;
s->opt[OPT_CONTRAST].desc = SANE_DESC_CONTRAST;
s->opt[OPT_CONTRAST].type = SANE_TYPE_FIXED;
s->opt[OPT_CONTRAST].cap |= SANE_CAP_AUTOMATIC;
s->opt[OPT_CONTRAST].unit = SANE_UNIT_PERCENT;
s->opt[OPT_CONTRAST].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_CONTRAST].constraint.range = &percentage_range;
s->val[OPT_CONTRAST] = 0;
/* brightness automatic correct */
s->opt[OPT_BRIGHT_ADJUST].name = "adjust-bright";
s->opt[OPT_BRIGHT_ADJUST].title = "Automatic brightness adjust";
s->opt[OPT_BRIGHT_ADJUST].desc = "Controls the automatic brightness of the "
"acquired image. This option is active for automatic brightness only.";
s->opt[OPT_BRIGHT_ADJUST].type = SANE_TYPE_INT;
s->opt[OPT_BRIGHT_ADJUST].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_BRIGHT_ADJUST].unit = SANE_UNIT_NONE;
s->opt[OPT_BRIGHT_ADJUST].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_BRIGHT_ADJUST].constraint.range = &automatic_adjust_range;
s->val[OPT_BRIGHT_ADJUST] = 0;
/* contrast automatic correct */
s->opt[OPT_CONTR_ADJUST].name = "adjust-contr";
s->opt[OPT_CONTR_ADJUST].title = "Automatic contrast adjust";
s->opt[OPT_CONTR_ADJUST].desc = "Controls the automatic contrast of the "
" acquired image. This option is active for automatic contrast only.";
s->opt[OPT_CONTR_ADJUST].type = SANE_TYPE_INT;
s->opt[OPT_CONTR_ADJUST].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_CONTR_ADJUST].unit = SANE_UNIT_NONE;
s->opt[OPT_CONTR_ADJUST].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_CONTR_ADJUST].constraint.range = &automatic_adjust_range;
s->val[OPT_CONTR_ADJUST] = 0;
return SANE_STATUS_GOOD;
}
static SANE_Status
attach_one (const char *dev)
{
attach (dev, 0);
return SANE_STATUS_GOOD;
}
SANE_Status
sane_init (SANE_Int * version_code, SANE_Auth_Callback authorize)
{
char dev_name[PATH_MAX];
size_t len;
FILE *fp;
DBG_INIT ();
if (version_code)
*version_code = SANE_VERSION_CODE (V_MAJOR, V_MINOR, 0);
fp = sanei_config_open ("s9036.conf");
if (!fp)
{
/* default to /dev/scanner instead of insisting on config file */
attach ("/dev/scanner", 0);
return SANE_STATUS_GOOD;
}
while (sanei_config_read (dev_name, sizeof (dev_name), fp))
{
if (dev_name[0] == '#') /* ignore line comments */
continue;
len = strlen (dev_name);
if (!len)
continue; /* ignore empty lines */
sanei_config_attach_matching_devices (dev_name, attach_one);
}
fclose (fp);
return SANE_STATUS_GOOD;
}
void
sane_exit (void)
{
S9036_Device *dev, *next;
for (dev = s9036_devices; dev; dev = next)
{
next = dev->next;
if (dev->handle)
sane_close (dev->handle);
free (dev);
}
}
SANE_Status
sane_get_devices (const SANE_Device *** device_list, SANE_Bool local_only)
{
static const SANE_Device **devlist = 0;
S9036_Device *dev;
int i;
if (devlist)
free (devlist);
devlist = malloc ((num_devices + 1) * sizeof (devlist[0]));
if (!devlist)
return SANE_STATUS_NO_MEM;
for (dev = s9036_devices, i = 0; i < num_devices; dev = dev->next)
devlist[i++] = &dev->sane;
devlist[i++] = 0;
*device_list = devlist;
return SANE_STATUS_GOOD;
}
SANE_Status
sane_open (SANE_String_Const devicename, SANE_Handle * handle)
{
S9036_Device *dev;
SANE_Status status;
S9036_Scanner *s;
if (devicename[0])
{
status = attach (devicename, &dev);
if (status != SANE_STATUS_GOOD)
return status;
}
else
{
/* empty devicname -> use first device */
dev = s9036_devices;
}
if (!dev)
return SANE_STATUS_INVAL;
if (dev->handle)
return SANE_STATUS_DEVICE_BUSY;
s = malloc (sizeof (*s));
if (!s)
return SANE_STATUS_NO_MEM;
memset (s, 0, sizeof (*s));
s->scanning = SANE_FALSE;
s->fd = -1;
s->hw = dev;
s->hw->handle = s;
init_options (s);
*handle = s;
return SANE_STATUS_GOOD;
}
void
sane_close (SANE_Handle handle)
{
S9036_Scanner *s = handle;
if (s->scanning)
do_cancel (handle);
s->hw->handle = 0;
free (handle);
}
const SANE_Option_Descriptor *
sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
{
S9036_Scanner *s = handle;
if ((unsigned) option >= NUM_OPTIONS)
return 0;
return s->opt + option;
}
SANE_Status
sane_control_option (SANE_Handle handle, SANE_Int option,
SANE_Action action, void *val, SANE_Int * info)
{
S9036_Scanner *s = handle;
SANE_Status status;
if (info)
*info = 0;
if (s->scanning)
return SANE_STATUS_DEVICE_BUSY;
if (option >= NUM_OPTIONS || !SANE_OPTION_IS_ACTIVE (s->opt[option].cap))
return SANE_STATUS_UNSUPPORTED;
if (action == SANE_ACTION_GET_VALUE)
{
switch (option)
{
case OPT_DEPTH:
case OPT_RESOLUTION:
case OPT_TL_X:
case OPT_TL_Y:
case OPT_BR_X:
case OPT_BR_Y:
case OPT_NUM_OPTS:
case OPT_BRIGHTNESS:
case OPT_CONTRAST:
case OPT_BRIGHT_ADJUST:
case OPT_CONTR_ADJUST:
*(SANE_Word *) val = s->val[option];
break;
default:
return SANE_STATUS_UNSUPPORTED;
}
}
else if (action == SANE_ACTION_SET_VALUE)
{
if (!SANE_OPTION_IS_SETTABLE (s->opt[option].cap))
return SANE_STATUS_UNSUPPORTED;
status = sanei_constrain_value (s->opt + option, val, info);
if (status != SANE_STATUS_GOOD)
return status;
switch (option)
{
case OPT_DEPTH:
case OPT_RESOLUTION:
case OPT_TL_X:
case OPT_TL_Y:
case OPT_BR_X:
case OPT_BR_Y:
if (info)
*info |= SANE_INFO_RELOAD_PARAMS;
case OPT_BRIGHT_ADJUST:
case OPT_CONTR_ADJUST:
s->val[option] = *(SANE_Word *) val;
break;
case OPT_BRIGHTNESS:
if (SANE_OPTION_IS_ACTIVE (s->opt[OPT_BRIGHT_ADJUST].cap))
{
s->opt[OPT_BRIGHT_ADJUST].cap |= SANE_CAP_INACTIVE;
if (info)
*info |= SANE_INFO_RELOAD_OPTIONS;
}
s->val[option] = *(SANE_Word *) val;
break;
case OPT_CONTRAST:
if (SANE_OPTION_IS_ACTIVE (s->opt[OPT_CONTR_ADJUST].cap))
{
s->opt[OPT_CONTR_ADJUST].cap |= SANE_CAP_INACTIVE;
if (info)
*info |= SANE_INFO_RELOAD_OPTIONS;
}
s->val[option] = *(SANE_Word *) val;
break;
default:
return SANE_STATUS_UNSUPPORTED;
}
}
else if (action == SANE_ACTION_SET_AUTO)
{
if (!SANE_OPTION_IS_SETTABLE (s->opt[option].cap))
return SANE_STATUS_UNSUPPORTED;
switch (option)
{
case OPT_BRIGHTNESS:
if (!SANE_OPTION_IS_ACTIVE (s->opt[OPT_BRIGHT_ADJUST].cap))
{
s->opt[OPT_BRIGHT_ADJUST].cap &= ~SANE_CAP_INACTIVE;
if (info)
*info |= SANE_INFO_RELOAD_OPTIONS;
}
break;
case OPT_CONTRAST:
if (!SANE_OPTION_IS_ACTIVE (s->opt[OPT_CONTR_ADJUST].cap))
{
s->opt[OPT_CONTR_ADJUST].cap &= ~SANE_CAP_INACTIVE;
if (info)
*info |= SANE_INFO_RELOAD_OPTIONS;
}
break;
default:
return SANE_STATUS_UNSUPPORTED;
}
}
else
return SANE_STATUS_UNSUPPORTED;
return SANE_STATUS_GOOD;
}
SANE_Status
sane_get_parameters (SANE_Handle handle, SANE_Parameters * params)
{
S9036_Scanner *s = handle;
if (!s->scanning)
{
double width, height, dpi;
memset (&s->params, 0, sizeof (s->params));
s->params.format = SANE_FRAME_GRAY;
s->params.last_frame = SANE_TRUE;
s->params.depth = s->val[OPT_DEPTH];
width = SANE_UNFIX (s->val[OPT_BR_X] - s->val[OPT_TL_X]);
height = SANE_UNFIX (s->val[OPT_BR_Y] - s->val[OPT_TL_Y]);
dpi = s->val[OPT_RESOLUTION];
/* make best-effort guess at what parameters will look like once
scanning starts. */
if (dpi > 0.0 && width > 0.0 && height > 0.0)
{
double dots_per_mm = dpi / MM_PER_INCH;
s->params.pixels_per_line = width * dots_per_mm + 0.5;
s->params.lines = height * dots_per_mm + 0.5;
}
s->params.bytes_per_line =
(s->params.pixels_per_line + (8 - s->params.depth))
/ (8 / s->params.depth);
}
if (params)
*params = s->params;
return SANE_STATUS_GOOD;
}
SANE_Status
sane_start (SANE_Handle handle)
{
S9036_Scanner *s = handle;
SANE_Status status;
if (s->scanning)
do_cancel (s);
/* First make sure we have a current parameter set. Some of the
parameters will be overwritten below, but that's OK. */
status = sane_get_parameters (s, 0);
if (status != SANE_STATUS_GOOD)
return status;
if (s->fd < 0)
{
status = sanei_scsi_open (s->hw->sane.name, &s->fd, sense_handler, 0);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "open: open of %s failed: %s\n",
s->hw->sane.name, sane_strstatus (status));
s->fd = -1;
return status;
}
}
status = test_ready (s->fd);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "open: test_ready() failed: %s\n", sane_strstatus (status));
sanei_scsi_close (s->fd);
s->fd = -1;
return status;
}
status = reserve_unit (s->fd);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "open: reserve_unit() failed: %s\n", sane_strstatus (status));
sanei_scsi_close (s->fd);
s->fd = -1;
return status;
}
status = set_window (s);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "open: set_window() failed: %s\n", sane_strstatus (status));
release_unit (s->fd);
sanei_scsi_close (s->fd);
s->fd = -1;
return status;
}
s->scanning = SANE_TRUE;
status = start_scan (s->fd, SANE_FALSE);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "open: start_scan() failed: %s\n", sane_strstatus (status));
do_cancel (s);
return status;
}
wait_ready (s->fd);
{
int lines_available = 0, bytes_per_line = 0, total_lines = 0;
status = get_read_sizes (s->fd, &lines_available, &bytes_per_line,
&total_lines);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "open: get_read_sizes() failed: %s\n",
sane_strstatus (status));
do_cancel (s);
return status;
}
if (!lines_available || !bytes_per_line || !total_lines)
{
DBG (1, "open: invalid_sizes(): %d, %d, %d\n",
lines_available, bytes_per_line, total_lines);
do_cancel (s);
return SANE_STATUS_INVAL;
}
s->params.lines = total_lines;
s->params.bytes_per_line = bytes_per_line;
s->params.pixels_per_line = bytes_per_line * (8 / s->params.depth);
s->lines_in_scanner = lines_available;
s->lines_read = 0;
/* Buffer must be at least 4k */
s->bufsize = (sanei_scsi_max_request_size < 4096) ?
4096 : sanei_scsi_max_request_size;
s->buffer = (Byte *) malloc (s->bufsize * sizeof (Byte));
if (!s->buffer)
{
DBG (1, "open malloc(%lu) failed.\n", (u_long) s->bufsize);
do_cancel (s);
return SANE_STATUS_NO_MEM;
}
s->bufstart = s->buffer;
s->in_buffer = 0;
}
return SANE_STATUS_GOOD;
}
static void
copy_buffer (S9036_Scanner * s, SANE_Byte ** buf, SANE_Int * max_len,
SANE_Int * len)
{
if (*max_len > s->in_buffer)
{
memcpy (*buf, s->bufstart, s->in_buffer);
*buf += s->in_buffer;
*len += s->in_buffer;
*max_len -= s->in_buffer;
s->bufstart = s->buffer;
s->in_buffer = 0;
}
else
{
memcpy (*buf, s->bufstart, *max_len);
s->bufstart += *max_len;
s->in_buffer -= *max_len;
*buf += *max_len;
*len += *max_len;
*max_len = 0;
}
}
SANE_Status
sane_read (SANE_Handle handle, SANE_Byte * buf, SANE_Int max_len,
SANE_Int * len)
{
S9036_Scanner *s = handle;
SANE_Status status;
if (s->scanning != SANE_TRUE || max_len == 0)
return SANE_STATUS_INVAL;
*len = 0;
DBG (3, "sane_read(%d) : lines_read %d\n", max_len, s->lines_read);
while (max_len > s->in_buffer && s->lines_read < s->params.lines)
{
if (s->in_buffer == 0)
{
status = read_more_data (s);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "sane_read: read_more_data() failed (%s)\n",
sane_strstatus (status));
do_cancel (s);
return status;
}
}
copy_buffer (s, &buf, &max_len, len);
if (!max_len || s->lines_read >= s->params.lines)
return SANE_STATUS_GOOD;
}
/* If we reached this point, there are either enough bytes in the buffer,
or, if the buffer is empty, we already reached the end of the page */
if (s->in_buffer > 0)
{
copy_buffer (s, &buf, &max_len, len);
return SANE_STATUS_GOOD;
}
else
{
do_cancel (s);
DBG (1, "EOF\n");
return SANE_STATUS_EOF;
}
}
void
sane_cancel (SANE_Handle handle)
{
S9036_Scanner *s = handle;
do_cancel (s);
}
SANE_Status
sane_set_io_mode (SANE_Handle handle, SANE_Bool non_blocking)
{
DBG (1, "sane_set_io_mode(%d)\n", non_blocking);
return (non_blocking == SANE_TRUE) ?
SANE_STATUS_UNSUPPORTED : SANE_STATUS_GOOD;
}
SANE_Status
sane_get_select_fd (SANE_Handle handle, SANE_Int * fd)
{
return SANE_STATUS_UNSUPPORTED;
}
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