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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /backend/tamarack.c
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'backend/tamarack.c')
-rw-r--r--backend/tamarack.c1474
1 files changed, 1474 insertions, 0 deletions
diff --git a/backend/tamarack.c b/backend/tamarack.c
new file mode 100644
index 0000000..9baec51
--- /dev/null
+++ b/backend/tamarack.c
@@ -0,0 +1,1474 @@
+/* sane - Scanner Access Now Easy.
+ Copyright (C) 1996 David Mosberger-Tang
+ Copyright (C) 1997 R.E.Wolff@BitWizard.nl
+ 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.
+
+ Note: The exception that is mentioned in the other source files is
+ not here. If a case arises where you need the rights that that
+ exception gives you, Please do contact me, and we'll work something
+ out.
+
+ R.E.Wolff@BitWizard.nl
+ tel: +31-152137555
+ fax: +31-152138217
+
+ This file implements a SANE backend for Tamarack flatbed scanners. */
+
+/*
+ This driver was written initially by changing all occurances of
+ "mustek" to "tamarack". This actuall worked without modification
+ for the manufacturer detection code! :-)
+
+ */
+
+
+#include "../include/sane/config.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/time.h>
+
+#include "../include/_stdint.h"
+
+#include "../include/sane/sane.h"
+#include "../include/sane/sanei.h"
+#include "../include/sane/saneopts.h"
+#include "../include/sane/sanei_scsi.h"
+#include "../include/sane/sanei_thread.h"
+#include "../include/sane/sanei_config.h"
+
+/* For timeval... */
+#ifdef DEBUG
+#include <sys/time.h>
+#endif
+
+
+#define BACKEND_NAME tamarack
+#include "../include/sane/sanei_backend.h"
+
+#include "tamarack.h"
+
+#ifndef PATH_MAX
+# define PATH_MAX 1024
+#endif
+
+#define TAMARACK_CONFIG_FILE "tamarack.conf"
+
+
+static int num_devices;
+static Tamarack_Device *first_dev;
+static Tamarack_Scanner *first_handle;
+
+static const SANE_String_Const mode_list[] =
+ {
+ SANE_VALUE_SCAN_MODE_LINEART,
+ SANE_VALUE_SCAN_MODE_HALFTONE,
+ SANE_VALUE_SCAN_MODE_GRAY,
+ SANE_VALUE_SCAN_MODE_COLOR,
+ 0
+ };
+
+
+static const SANE_Range u8_range =
+ {
+ 0, /* minimum */
+ 255, /* maximum */
+ 0 /* quantization */
+ };
+
+
+/* David used " 100 << SANE_FIXED_SCALE_SHIFT ". This assumes that
+ * it is implemented that way. I want to hide the datatype.
+ */
+static const SANE_Range percentage_range =
+ {
+ SANE_FIX(-100), /* minimum */
+ SANE_FIX( 100), /* maximum */
+ SANE_FIX( 1 ) /* quantization */
+ };
+
+/* David used " 100 << SANE_FIXED_SCALE_SHIFT ". This assumes that
+ * it is implemented that way. I want to hide the datatype.
+ */
+static const SANE_Range abs_percentage_range =
+ {
+ SANE_FIX( 0), /* minimum */
+ SANE_FIX( 100), /* maximum */
+ SANE_FIX( 1 ) /* quantization */
+ };
+
+
+#define INQ_LEN 0x60
+static const uint8_t inquiry[] =
+{
+ TAMARACK_SCSI_INQUIRY, 0x00, 0x00, 0x00, INQ_LEN, 0x00
+};
+
+static const uint8_t test_unit_ready[] =
+{
+ TAMARACK_SCSI_TEST_UNIT_READY, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const uint8_t stop[] =
+{
+ TAMARACK_SCSI_START_STOP, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+static const uint8_t get_status[] =
+{
+ TAMARACK_SCSI_GET_DATA_STATUS, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x0c, 0x00
+};
+
+
+
+static SANE_Status
+wait_ready (int fd)
+{
+ SANE_Status status;
+ int i;
+
+ for (i = 0; i < 1000; ++i)
+ {
+ DBG(3, "wait_ready: sending TEST_UNIT_READY\n");
+ status = sanei_scsi_cmd (fd, test_unit_ready, sizeof (test_unit_ready),
+ 0, 0);
+ switch (status)
+ {
+ default:
+ /* Ignore errors while waiting for scanner to become ready.
+ Some SCSI drivers return EIO while the scanner is
+ returning to the home position. */
+ DBG(1, "wait_ready: test unit ready failed (%s)\n",
+ sane_strstatus (status));
+ /* fall through */
+ case SANE_STATUS_DEVICE_BUSY:
+ usleep (100000); /* retry after 100ms */
+ break;
+
+ case SANE_STATUS_GOOD:
+ return status;
+ }
+ }
+ DBG(1, "wait_ready: timed out after %d attempts\n", i);
+ return SANE_STATUS_INVAL;
+}
+
+
+
+static SANE_Status
+sense_handler (int scsi_fd, u_char *result, void *arg)
+{
+ scsi_fd = scsi_fd;
+ arg = arg; /* silence compilation warnings */
+
+ switch (result[0])
+ {
+ case 0x00:
+ break;
+
+ default:
+ DBG(1, "sense_handler: got unknown sense code %02x\n", result[0]);
+ return SANE_STATUS_IO_ERROR;
+ }
+ return SANE_STATUS_GOOD;
+}
+
+
+/* XXX This might leak the memory to a TAMARACK string */
+
+static SANE_Status
+attach (const char *devname, Tamarack_Device **devp)
+{
+ char result[INQ_LEN];
+ int fd;
+ Tamarack_Device *dev;
+ SANE_Status status;
+ size_t size;
+ char *mfg, *model;
+ char *p;
+
+ for (dev = first_dev; 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, inquiry, sizeof (inquiry), result, &size);
+ if (status != SANE_STATUS_GOOD || size != INQ_LEN) {
+ DBG(1, "attach: inquiry failed (%s)\n", sane_strstatus (status));
+ sanei_scsi_close (fd);
+ return status;
+ }
+
+ status = wait_ready (fd);
+ sanei_scsi_close (fd);
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ result[33]= '\0';
+ p = strchr(result+16,' ');
+ if (p) *p = '\0';
+ model = strdup (result+16);
+
+ result[16]= '\0';
+ p = strchr(result+8,' ');
+ if (p) *p = '\0';
+ mfg = strdup (result+8);
+
+ DBG(1, "attach: Inquiry gives mfg=%s, model=%s.\n", mfg, model);
+
+ if (strcmp (mfg, "TAMARACK") != 0) {
+ DBG(1, "attach: device doesn't look like a Tamarack scanner "
+ "(result[0]=%#02x)\n", result[0]);
+ return SANE_STATUS_INVAL;
+ }
+
+ dev = malloc (sizeof (*dev));
+ if (!dev)
+ return SANE_STATUS_NO_MEM;
+
+ memset (dev, 0, sizeof (*dev));
+
+ dev->sane.name = strdup (devname);
+ dev->sane.vendor = "Tamarack";
+ dev->sane.model = model;
+ dev->sane.type = "flatbed scanner";
+
+ dev->x_range.min = 0;
+ dev->y_range.min = 0;
+ dev->x_range.quant = 0;
+ dev->y_range.quant = 0;
+ dev->dpi_range.min = SANE_FIX (1);
+ dev->dpi_range.quant = SANE_FIX (1);
+
+ dev->x_range.max = SANE_FIX (8.5 * MM_PER_INCH);
+ dev->y_range.max = SANE_FIX (11.0 * MM_PER_INCH);
+ dev->dpi_range.max = SANE_FIX (600);
+
+ DBG(3, "attach: found Tamarack scanner model %s (%s)\n",
+ dev->sane.model, dev->sane.type);
+
+ ++num_devices;
+ dev->next = first_dev;
+ first_dev = dev;
+
+ if (devp)
+ *devp = dev;
+ return SANE_STATUS_GOOD;
+}
+
+
+static size_t
+max_string_size (const SANE_String_Const strings[])
+{
+ size_t size, max_size = 0;
+ 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_Status
+constrain_value (Tamarack_Scanner *s, SANE_Int option, void *value,
+ SANE_Int *info)
+{
+ return sanei_constrain_value (s->opt + option, value, info);
+}
+
+
+static unsigned char sign_mag (double val)
+{
+ if (val > 100) val = 100;
+ if (val < -100) val = -100;
+ if (val >= 0) return ( val);
+ else return ((unsigned char)(-val)) | 0x80;
+}
+
+
+
+static SANE_Status
+scan_area_and_windows (Tamarack_Scanner *s)
+{
+ struct def_win_par dwp;
+
+ memset (&dwp,'\0',sizeof (dwp));
+ dwp.dwph.opc = TAMARACK_SCSI_AREA_AND_WINDOWS;
+ set_triple (dwp.dwph.len,8 + sizeof (dwp.wdb));
+
+ set_double (dwp.wdh.wpll, sizeof (dwp.wdb));
+
+ dwp.wdb.winid = WINID;
+ set_double (dwp.wdb.xres, (int) SANE_UNFIX (s->val[OPT_RESOLUTION].w));
+ set_double (dwp.wdb.yres, (int) SANE_UNFIX (s->val[OPT_RESOLUTION].w));
+
+ set_quad (dwp.wdb.ulx, (int) (47.2 * SANE_UNFIX (s->val[OPT_TL_X].w)));
+ set_quad (dwp.wdb.uly, (int) (47.2 * SANE_UNFIX (s->val[OPT_TL_Y].w)));
+ set_quad (dwp.wdb.width,
+ (int) (47.2 * SANE_UNFIX (s->val[OPT_BR_X].w - s->val[OPT_TL_X].w)));
+ set_quad (dwp.wdb.length,
+ (int) (47.2 * SANE_UNFIX (s->val[OPT_BR_Y].w - s->val[OPT_TL_Y].w)));
+
+ dwp.wdb.brightness = sign_mag (SANE_UNFIX (s->val[OPT_BRIGHTNESS].w));
+ dwp.wdb.contrast = sign_mag (SANE_UNFIX (s->val[OPT_CONTRAST].w));
+ dwp.wdb.thresh = 0x80;
+
+
+ switch (s->mode) {
+ case THRESHOLDED:
+ dwp.wdb.bpp = 1;
+ dwp.wdb.image_comp = 0;
+ dwp.wdb.thresh = 1 + 2.55 * (SANE_UNFIX (s->val[OPT_THRESHOLD].w));
+ break;
+ case DITHERED:
+ dwp.wdb.bpp = 1;
+ dwp.wdb.image_comp = 1;
+ break;
+ case GREYSCALE:
+ dwp.wdb.bpp = 8;
+ dwp.wdb.image_comp = 2;
+ break;
+ case TRUECOLOR:
+ dwp.wdb.bpp = 8;
+ dwp.wdb.image_comp = 2;
+ break;
+ default:
+ DBG(1, "Invalid mode. %d\n", s->mode);
+ return SANE_STATUS_INVAL;
+ }
+ DBG(1, "bright, thresh, contrast = %d(%5.1f), %d, %d(%5.1f)\n",
+ dwp.wdb.brightness, SANE_UNFIX (s->val[OPT_BRIGHTNESS].w),
+ dwp.wdb.thresh ,
+ dwp.wdb.contrast , SANE_UNFIX (s->val[OPT_CONTRAST].w));
+
+ set_double (dwp.wdb.halftone, 1); /* XXX What does this do again ? */
+ dwp.wdb.pad_type = 3; /* This is the only usable pad-type. */
+ dwp.wdb.exposure = 0x6f; /* XXX Option? */
+ dwp.wdb.compr_type = 0;
+
+ /* XXX Shouldn't this be sizeof (dwp) */
+ return sanei_scsi_cmd (s->fd, &dwp, (10+8+38), 0, 0);
+}
+
+
+static SANE_Status
+mode_select (Tamarack_Scanner *s)
+{
+ struct {
+ struct command_header cmd;
+ struct page_header hdr;
+ struct tamarack_page page;
+ } c;
+
+ memset (&c, '\0', sizeof (c));
+ c.cmd.opc = TAMARACK_SCSI_MODE_SELECT;
+ c.cmd.pad0[0] = 0x10; /* Suddenly the pad bytes are no long pad... */
+ c.cmd.pad0[1] = 0;
+ c.cmd.len = sizeof (struct page_header) + sizeof (struct tamarack_page);
+ c.hdr.code = 0;
+ c.hdr.length = 6;
+ c.page.gamma = 2;
+ c.page.thresh = 0x80; /* XXX Option? */
+ switch (s->mode) {
+ case THRESHOLDED:
+ case DITHERED:
+ case GREYSCALE:
+ c.page.masks = 0x80;
+ break;
+ case TRUECOLOR:
+ c.page.masks = 0x40 >> s->pass;
+ break;
+ }
+ c.page.delay = 0x10; /* XXX Option? */
+ c.page.features = (s->val[OPT_TRANS].w ? TAM_TRANS_ON:0) | 1;
+ return sanei_scsi_cmd (s->fd, &c, sizeof (c), 0, 0);
+}
+
+
+static SANE_Status
+start_scan (Tamarack_Scanner *s)
+{
+ struct {
+ struct command_header cmd;
+ unsigned char winid[1];
+ } c;
+
+ memset (&c,'\0',sizeof (c));
+ c.cmd.opc = TAMARACK_SCSI_START_STOP;
+ c.cmd.len = sizeof (c.winid);
+ c.winid[0] = WINID;
+ return sanei_scsi_cmd (s->fd, &c, sizeof (c), 0, 0);
+}
+
+
+static SANE_Status
+stop_scan (Tamarack_Scanner *s)
+{
+ /* XXX I don't think a TAMARACK can stop in mid-scan. Just stop
+ sending it requests for data....
+ */
+ return sanei_scsi_cmd (s->fd, stop, sizeof (stop), 0, 0);
+}
+
+
+static SANE_Status
+do_eof (Tamarack_Scanner *s)
+{
+ if (s->pipe >= 0)
+ {
+ close (s->pipe);
+ s->pipe = -1;
+ }
+ return SANE_STATUS_EOF;
+}
+
+
+static SANE_Status
+do_cancel (Tamarack_Scanner *s)
+{
+ s->scanning = SANE_FALSE;
+ s->pass = 0;
+
+ do_eof (s);
+
+ if (s->reader_pid != -1)
+ {
+ int exit_status;
+
+ /* ensure child knows it's time to stop: */
+ sanei_thread_kill (s->reader_pid);
+ sanei_thread_waitpid (s->reader_pid, &exit_status);
+ s->reader_pid = -1;
+ }
+
+ if (s->fd >= 0)
+ {
+ stop_scan (s);
+ sanei_scsi_close (s->fd);
+ s->fd = -1;
+ }
+
+ return SANE_STATUS_CANCELLED;
+}
+
+
+static SANE_Status
+get_image_status (Tamarack_Scanner *s)
+{
+ uint8_t result[12];
+ SANE_Status status;
+ size_t len;
+ int busy;
+
+#if 1
+ do
+ {
+ len = sizeof (result);
+ status = sanei_scsi_cmd (s->fd, get_status, sizeof (get_status),
+ result, &len);
+ if ((status != SANE_STATUS_GOOD) && (status != SANE_STATUS_DEVICE_BUSY))
+ return status;
+
+ busy = (result[2] != 8) || (status == SANE_STATUS_DEVICE_BUSY);
+ if (busy)
+ usleep (100000);
+
+ if (!s->scanning)
+ return do_cancel (s);
+ }
+ while (busy);
+#else
+ /* XXX Test if this works one day... */
+ wait_ready (s);
+#endif
+
+ len = sizeof (result);
+ status = sanei_scsi_cmd (s->fd, get_status, sizeof (get_status),
+ result, &len);
+ if ((status != SANE_STATUS_GOOD) && (status != SANE_STATUS_DEVICE_BUSY))
+ return status;
+
+ s->params.bytes_per_line =
+ result[ 8] | (result[ 7] << 8) | (result[6] << 16);
+ s->params.lines =
+ result[11] | (result[10] << 8) | (result[9] << 16);
+
+ switch (s->mode) {
+ case DITHERED:
+ case THRESHOLDED:
+ s->params.pixels_per_line = 8 * s->params.bytes_per_line;
+ break;
+ case GREYSCALE:
+ case TRUECOLOR:
+ s->params.pixels_per_line = s->params.bytes_per_line;
+ break;
+ }
+
+
+ DBG(1, "get_image_status: bytes_per_line=%d, lines=%d\n",
+ s->params.bytes_per_line, s->params.lines);
+ return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+read_data (Tamarack_Scanner *s, SANE_Byte *buf, int lines, int bpl)
+{
+ struct command_header_10 cmd;
+ size_t nbytes;
+ SANE_Status status;
+#ifdef DEBUG
+ int dt;
+ struct timeval tv_start,tv_end;
+#endif
+
+ nbytes = bpl * lines;
+ memset (&cmd,'\0',sizeof (cmd));
+ cmd.opc = 0x28;
+ set_triple (cmd.len,nbytes);
+
+#ifdef DEBUG
+ if (verbose) DBG (1, "Doing read_data... \n");
+ gettimeofday (&tv_start,NULL);
+#endif
+
+ status = sanei_scsi_cmd (s->fd, &cmd, sizeof (cmd), buf, &nbytes);
+
+#ifdef DEBUG
+ gettimeofday (&tv_end,NULL);
+ dt = tv_end.tv_usec - tv_start.tv_usec +
+ (tv_end.tv_sec - tv_start.tv_sec) * 1000000;
+ if (verbose) DBG(1, "Read took %d.%06d seconds.",
+ dt/1000000,dt%1000000);
+ dt = 1000000 * nbytes / dt;
+ if (verbose) DBG(1, "which is %d.%03d bytes per second.\n",dt,0);
+#endif
+ return status;
+}
+
+
+
+static SANE_Status
+init_options (Tamarack_Scanner *s)
+{
+ int i;
+
+ 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].type = SANE_TYPE_INT;
+ s->opt[OPT_NUM_OPTS].cap = SANE_CAP_SOFT_DETECT;
+ s->val[OPT_NUM_OPTS].w = 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;
+
+ /* scan mode */
+ s->opt[OPT_MODE].name = SANE_NAME_SCAN_MODE;
+ s->opt[OPT_MODE].title = SANE_TITLE_SCAN_MODE;
+ s->opt[OPT_MODE].desc = "Select the scan mode";
+ s->opt[OPT_MODE].type = SANE_TYPE_STRING;
+ s->opt[OPT_MODE].size = max_string_size (mode_list);
+ s->opt[OPT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+ s->opt[OPT_MODE].constraint.string_list = mode_list;
+ s->val[OPT_MODE].s = strdup (mode_list[OPT_MODE_DEFAULT]);
+
+ /* 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_FIXED;
+ s->opt[OPT_RESOLUTION].unit = SANE_UNIT_DPI;
+ s->opt[OPT_RESOLUTION].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_RESOLUTION].constraint.range = &s->hw->dpi_range;
+ s->val[OPT_RESOLUTION].w = SANE_FIX (OPT_RESOLUTION_DEFAULT);
+
+ /* preview */
+ s->opt[OPT_PREVIEW].name = SANE_NAME_PREVIEW;
+ s->opt[OPT_PREVIEW].title = SANE_TITLE_PREVIEW;
+ s->opt[OPT_PREVIEW].desc = SANE_DESC_PREVIEW;
+ s->opt[OPT_PREVIEW].cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
+ s->val[OPT_PREVIEW].w = 0;
+
+ /* gray preview */
+ s->opt[OPT_GRAY_PREVIEW].name = SANE_NAME_GRAY_PREVIEW;
+ s->opt[OPT_GRAY_PREVIEW].title = SANE_TITLE_GRAY_PREVIEW;
+ s->opt[OPT_GRAY_PREVIEW].desc = SANE_DESC_GRAY_PREVIEW;
+ s->opt[OPT_GRAY_PREVIEW].type = SANE_TYPE_BOOL;
+ s->val[OPT_GRAY_PREVIEW].w = SANE_FALSE;
+
+ /* "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 = &s->hw->x_range;
+ s->val[OPT_TL_X].w = 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 = &s->hw->y_range;
+ s->val[OPT_TL_Y].w = 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 = &s->hw->x_range;
+ s->val[OPT_BR_X].w = s->hw->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 = &s->hw->y_range;
+ s->val[OPT_BR_Y].w = s->hw->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;
+
+ /* transparency adapter. */
+ s->opt[OPT_TRANS].name = "transparency";
+ s->opt[OPT_TRANS].title = "transparency";
+ s->opt[OPT_TRANS].desc = "Turn on the transparency adapter.";
+ s->opt[OPT_TRANS].type = SANE_TYPE_BOOL;
+ s->opt[OPT_TRANS].unit = SANE_UNIT_NONE;
+ s->val[OPT_TRANS].w = SANE_FALSE;
+
+ /* 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
+ " This option is active for lineart/halftone modes only. "
+ "For multibit modes (grey/color) use the gamma-table(s).";
+ s->opt[OPT_BRIGHTNESS].type = SANE_TYPE_FIXED;
+ 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].w = SANE_FIX(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
+ " This option is active for lineart/halftone modes only. "
+ "For multibit modes (grey/color) use the gamma-table(s).";
+ s->opt[OPT_CONTRAST].type = SANE_TYPE_FIXED;
+ 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].w = SANE_FIX(0);
+
+ /* Threshold */
+ s->opt[OPT_THRESHOLD].name = "Threshold";
+ s->opt[OPT_THRESHOLD].title = "Threshold";
+ s->opt[OPT_THRESHOLD].desc = "Threshold: below this level is black, above is white"
+ " This option is active for bitmap modes only. ";
+ s->opt[OPT_THRESHOLD].type = SANE_TYPE_FIXED;
+ s->opt[OPT_THRESHOLD].unit = SANE_UNIT_PERCENT;
+ s->opt[OPT_THRESHOLD].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_THRESHOLD].constraint.range = &abs_percentage_range;
+ s->val[OPT_THRESHOLD].w = SANE_FIX(50);
+ s->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE;
+
+#if 0
+ /* custom-gamma table */
+ s->opt[OPT_CUSTOM_GAMMA].name = SANE_NAME_CUSTOM_GAMMA;
+ s->opt[OPT_CUSTOM_GAMMA].title = SANE_TITLE_CUSTOM_GAMMA;
+ s->opt[OPT_CUSTOM_GAMMA].desc = SANE_DESC_CUSTOM_GAMMA;
+ s->opt[OPT_CUSTOM_GAMMA].type = SANE_TYPE_BOOL;
+ s->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
+ s->val[OPT_CUSTOM_GAMMA].w = SANE_FALSE;
+
+ /* grayscale gamma vector */
+ s->opt[OPT_GAMMA_VECTOR].name = SANE_NAME_GAMMA_VECTOR;
+ s->opt[OPT_GAMMA_VECTOR].title = SANE_TITLE_GAMMA_VECTOR;
+ s->opt[OPT_GAMMA_VECTOR].desc = SANE_DESC_GAMMA_VECTOR;
+ s->opt[OPT_GAMMA_VECTOR].type = SANE_TYPE_INT;
+ s->opt[OPT_GAMMA_VECTOR].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR].unit = SANE_UNIT_NONE;
+ s->opt[OPT_GAMMA_VECTOR].size = 256 * sizeof (SANE_Word);
+ s->opt[OPT_GAMMA_VECTOR].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_GAMMA_VECTOR].constraint.range = &u8_range;
+ s->val[OPT_GAMMA_VECTOR].wa = &s->gamma_table[0][0];
+
+ /* red gamma vector */
+ s->opt[OPT_GAMMA_VECTOR_R].name = SANE_NAME_GAMMA_VECTOR_R;
+ s->opt[OPT_GAMMA_VECTOR_R].title = SANE_TITLE_GAMMA_VECTOR_R;
+ s->opt[OPT_GAMMA_VECTOR_R].desc = SANE_DESC_GAMMA_VECTOR_R;
+ s->opt[OPT_GAMMA_VECTOR_R].type = SANE_TYPE_INT;
+ s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_R].unit = SANE_UNIT_NONE;
+ s->opt[OPT_GAMMA_VECTOR_R].size = 256 * sizeof (SANE_Word);
+ s->opt[OPT_GAMMA_VECTOR_R].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_GAMMA_VECTOR_R].constraint.range = &u8_range;
+ s->val[OPT_GAMMA_VECTOR_R].wa = &s->gamma_table[1][0];
+
+ /* green gamma vector */
+ s->opt[OPT_GAMMA_VECTOR_G].name = SANE_NAME_GAMMA_VECTOR_G;
+ s->opt[OPT_GAMMA_VECTOR_G].title = SANE_TITLE_GAMMA_VECTOR_G;
+ s->opt[OPT_GAMMA_VECTOR_G].desc = SANE_DESC_GAMMA_VECTOR_G;
+ s->opt[OPT_GAMMA_VECTOR_G].type = SANE_TYPE_INT;
+ s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_G].unit = SANE_UNIT_NONE;
+ s->opt[OPT_GAMMA_VECTOR_G].size = 256 * sizeof (SANE_Word);
+ s->opt[OPT_GAMMA_VECTOR_G].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_GAMMA_VECTOR_G].constraint.range = &u8_range;
+ s->val[OPT_GAMMA_VECTOR_G].wa = &s->gamma_table[2][0];
+
+ /* blue gamma vector */
+ s->opt[OPT_GAMMA_VECTOR_B].name = SANE_NAME_GAMMA_VECTOR_B;
+ s->opt[OPT_GAMMA_VECTOR_B].title = SANE_TITLE_GAMMA_VECTOR_B;
+ s->opt[OPT_GAMMA_VECTOR_B].desc = SANE_DESC_GAMMA_VECTOR_B;
+ s->opt[OPT_GAMMA_VECTOR_B].type = SANE_TYPE_INT;
+ s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_B].unit = SANE_UNIT_NONE;
+ s->opt[OPT_GAMMA_VECTOR_B].size = 256 * sizeof (SANE_Word);
+ s->opt[OPT_GAMMA_VECTOR_B].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_GAMMA_VECTOR_B].constraint.range = &u8_range;
+ s->val[OPT_GAMMA_VECTOR_B].wa = &s->gamma_table[3][0];
+#endif
+ return SANE_STATUS_GOOD;
+}
+
+
+/* This function is executed as a child process. The reason this is
+ executed as a subprocess is because some (most?) generic SCSI
+ interfaces block a SCSI request until it has completed. With a
+ subprocess, we can let it block waiting for the request to finish
+ while the main process can go about to do more important things
+ (such as recognizing when the user presses a cancel button).
+
+ WARNING: Since this is executed as a subprocess, it's NOT possible
+ to update any of the variables in the main process (in particular
+ the scanner state cannot be updated). */
+static int
+reader_process (void *scanner)
+{
+ Tamarack_Scanner *s = (Tamarack_Scanner *) scanner;
+ int fd = s->reader_pipe;
+
+ SANE_Byte *data;
+ int lines_per_buffer, bpl;
+ SANE_Status status;
+ sigset_t sigterm_set;
+ sigset_t ignore_set;
+ struct SIGACTION act;
+ FILE *fp;
+
+ if (sanei_thread_is_forked()) close (s->pipe);
+
+ sigfillset (&ignore_set);
+ sigdelset (&ignore_set, SIGTERM);
+#if defined (__APPLE__) && defined (__MACH__)
+ sigdelset (&ignore_set, SIGUSR2);
+#endif
+ sigprocmask (SIG_SETMASK, &ignore_set, 0);
+
+ memset (&act, 0, sizeof (act));
+ sigaction (SIGTERM, &act, 0);
+
+ sigemptyset (&sigterm_set);
+ sigaddset (&sigterm_set, SIGTERM);
+
+ fp = fdopen (fd, "w");
+ if (!fp)
+ return 1;
+
+ bpl = s->params.bytes_per_line;
+
+ lines_per_buffer = sanei_scsi_max_request_size / bpl;
+ if (!lines_per_buffer)
+ return 2; /* resolution is too high */
+
+ /* Limit the size of a single transfer to one inch.
+ XXX Add a stripsize option. */
+ if (lines_per_buffer > SANE_UNFIX (s->val[OPT_RESOLUTION].w))
+ lines_per_buffer = SANE_UNFIX (s->val[OPT_RESOLUTION].w);
+
+ DBG(3, "lines_per_buffer=%d, bytes_per_line=%d\n", lines_per_buffer, bpl);
+
+ data = malloc (lines_per_buffer * bpl);
+
+ for (s->line = 0; s->line < s->params.lines; s->line += lines_per_buffer) {
+ if (s->line + lines_per_buffer > s->params.lines)
+ /* do the last few lines: */
+ lines_per_buffer = s->params.lines - s->line;
+
+ sigprocmask (SIG_BLOCK, &sigterm_set, 0);
+ status = read_data (s, data, lines_per_buffer, bpl);
+ sigprocmask (SIG_UNBLOCK, &sigterm_set, 0);
+ if (status != SANE_STATUS_GOOD) {
+ DBG(1, "reader_process: read_data failed with status=%d\n", status);
+ return 3;
+ }
+ DBG(3, "reader_process: read %d lines\n", lines_per_buffer);
+
+ if ((s->mode == TRUECOLOR) || (s->mode == GREYSCALE)) {
+ fwrite (data, lines_per_buffer, bpl, fp);
+ } else {
+ /* in singlebit mode, the scanner returns 1 for black. ;-( --DM */
+ /* Hah! Same for Tamarack... -- REW */
+ int i;
+
+ for (i = 0; i < lines_per_buffer * bpl; ++i)
+ fputc (~data[i], fp);
+ }
+ }
+ fclose (fp);
+ return 0;
+}
+
+
+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;
+
+ authorize = authorize; /* silence compilation warnings */
+
+ DBG_INIT();
+
+ sanei_thread_init();
+
+ if (version_code)
+ *version_code = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, V_MINOR, 0);
+
+ fp = sanei_config_open (TAMARACK_CONFIG_FILE);
+ 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)
+{
+ Tamarack_Device *dev, *next;
+
+ for (dev = first_dev; dev; dev = next) {
+ next = dev->next;
+ free ((void *) dev->sane.name);
+ free ((void *) dev->sane.model);
+ free (dev);
+ }
+}
+
+SANE_Status
+sane_get_devices (const SANE_Device ***device_list, SANE_Bool local_only)
+{
+ static const SANE_Device **devlist = 0;
+ Tamarack_Device *dev;
+ int i;
+
+ local_only = local_only; /* silence compilation warnings */
+
+ 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;
+}
+
+
+SANE_Status
+sane_open (SANE_String_Const devicename, SANE_Handle *handle)
+{
+ Tamarack_Device *dev;
+ SANE_Status status;
+ Tamarack_Scanner *s;
+ int i, j;
+
+ if (devicename[0]) {
+ for (dev = first_dev; dev; dev = dev->next)
+ if (strcmp (dev->sane.name, devicename) == 0)
+ break;
+
+ if (!dev) {
+ status = attach (devicename, &dev);
+ if (status != SANE_STATUS_GOOD)
+ return status;
+ }
+ } else {
+ /* empty devicname -> use first device */
+ dev = first_dev;
+ }
+
+ if (!dev)
+ return SANE_STATUS_INVAL;
+
+ s = malloc (sizeof (*s));
+ if (!s)
+ return SANE_STATUS_NO_MEM;
+ memset (s, 0, sizeof (*s));
+ s->fd = -1;
+ s->pipe = -1;
+ s->hw = dev;
+ for (i = 0; i < 4; ++i)
+ for (j = 0; j < 256; ++j)
+ s->gamma_table[i][j] = j;
+
+ init_options (s);
+
+ /* insert newly opened handle into list of open handles: */
+ s->next = first_handle;
+ first_handle = s;
+
+ *handle = s;
+ return SANE_STATUS_GOOD;
+}
+
+
+void
+sane_close (SANE_Handle handle)
+{
+ Tamarack_Scanner *prev, *s;
+
+ /* remove handle from list of open handles: */
+ prev = 0;
+ for (s = first_handle; s; s = s->next) {
+ if (s == handle)
+ break;
+ prev = s;
+ }
+
+ if (!s) {
+ DBG(1, "close: invalid handle %p\n", handle);
+ return; /* oops, not a handle we know about */
+ }
+
+ if (s->scanning)
+ do_cancel (handle);
+
+ if (prev)
+ prev->next = s->next;
+ else
+ first_handle = s->next;
+
+ free (handle);
+}
+
+
+const SANE_Option_Descriptor *
+sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
+{
+ Tamarack_Scanner *s = handle;
+
+ if ((unsigned) option >= NUM_OPTIONS)
+ return 0;
+ return s->opt + option;
+}
+
+
+
+static int make_mode (char *mode)
+{
+ if (strcmp (mode, SANE_VALUE_SCAN_MODE_LINEART) == 0)
+ return THRESHOLDED;
+ if (strcmp (mode, SANE_VALUE_SCAN_MODE_HALFTONE) == 0)
+ return DITHERED;
+ else if (strcmp (mode, SANE_VALUE_SCAN_MODE_GRAY) == 0)
+ return GREYSCALE;
+ else if (strcmp (mode, SANE_VALUE_SCAN_MODE_COLOR) == 0)
+ return TRUECOLOR;
+
+ return -1;
+}
+
+
+SANE_Status
+sane_control_option (SANE_Handle handle, SANE_Int option,
+ SANE_Action action, void *val, SANE_Int *info)
+{
+ Tamarack_Scanner *s = handle;
+ SANE_Status status;
+ SANE_Word cap;
+
+ if (info)
+ *info = 0;
+
+ if (s->scanning)
+ return SANE_STATUS_DEVICE_BUSY;
+
+ if (option >= NUM_OPTIONS)
+ return SANE_STATUS_INVAL;
+
+ cap = s->opt[option].cap;
+
+ if (!SANE_OPTION_IS_ACTIVE (cap))
+ return SANE_STATUS_INVAL;
+
+ if (action == SANE_ACTION_GET_VALUE) {
+ switch (option) {
+ /* word options: */
+ case OPT_PREVIEW:
+ case OPT_GRAY_PREVIEW:
+ 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_TRANS:
+ case OPT_BRIGHTNESS:
+ case OPT_CONTRAST:
+ case OPT_THRESHOLD:
+#if 0
+ case OPT_CUSTOM_GAMMA:
+#endif
+ *(SANE_Word *) val = s->val[option].w;
+ return SANE_STATUS_GOOD;
+
+#if 0
+ /* word-array options: */
+ case OPT_GAMMA_VECTOR:
+ case OPT_GAMMA_VECTOR_R:
+ case OPT_GAMMA_VECTOR_G:
+ case OPT_GAMMA_VECTOR_B:
+ memcpy (val, s->val[option].wa, s->opt[option].size);
+ return SANE_STATUS_GOOD;
+#endif
+
+ /* string options: */
+ case OPT_MODE:
+ strcpy (val, s->val[option].s);
+ return SANE_STATUS_GOOD;
+ }
+ } else if (action == SANE_ACTION_SET_VALUE) {
+ if (!SANE_OPTION_IS_SETTABLE (cap))
+ return SANE_STATUS_INVAL;
+
+ status = constrain_value (s, option, val, info);
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ switch (option)
+ {
+ /* (mostly) side-effect-free word options: */
+ 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;
+ /* fall through */
+ case OPT_PREVIEW:
+ case OPT_GRAY_PREVIEW:
+ case OPT_BRIGHTNESS:
+ case OPT_CONTRAST:
+ case OPT_THRESHOLD:
+ case OPT_TRANS:
+ s->val[option].w = *(SANE_Word *) val;
+ return SANE_STATUS_GOOD;
+
+#if 0
+ /* side-effect-free word-array options: */
+ case OPT_GAMMA_VECTOR:
+ case OPT_GAMMA_VECTOR_R:
+ case OPT_GAMMA_VECTOR_G:
+ case OPT_GAMMA_VECTOR_B:
+ memcpy (s->val[option].wa, val, s->opt[option].size);
+ return SANE_STATUS_GOOD;
+
+ /* options with side-effects: */
+
+ case OPT_CUSTOM_GAMMA:
+ w = *(SANE_Word *) val;
+ if (w == s->val[OPT_CUSTOM_GAMMA].w)
+ return SANE_STATUS_GOOD; /* no change */
+
+ s->val[OPT_CUSTOM_GAMMA].w = w;
+ if (w) {
+ s->mode = make_mode (s->val[OPT_MODE].s);
+
+ if (s->mode == GREYSCALE) {
+ s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
+ } else if (s->mode == TRUECOLOR) {
+ s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE;
+ }
+ } else {
+ s->opt[OPT_GAMMA_VECTOR].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
+ }
+ if (info)
+ *info |= SANE_INFO_RELOAD_OPTIONS;
+ return SANE_STATUS_GOOD;
+#endif
+
+ case OPT_MODE:
+ {
+
+ if (s->val[option].s)
+ free (s->val[option].s);
+ s->val[option].s = strdup (val);
+
+ s->mode = make_mode (s->val[OPT_MODE].s);
+
+ if (info)
+ *info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
+
+ s->opt[OPT_BRIGHTNESS].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_CONTRAST].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE;
+#if 0
+ s->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
+#endif
+
+
+ if (strcmp (val, SANE_VALUE_SCAN_MODE_LINEART) == 0)
+ s->opt[OPT_THRESHOLD].cap &= ~SANE_CAP_INACTIVE;
+ else {
+ s->opt[OPT_BRIGHTNESS].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
+ }
+#if 0
+ if (!binary)
+ s->opt[OPT_CUSTOM_GAMMA].cap &= ~SANE_CAP_INACTIVE;
+
+ if (s->val[OPT_CUSTOM_GAMMA].w) {
+ if (strcmp (val, SANE_VALUE_SCAN_MODE_GRAY) == 0)
+ s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
+ else if (strcmp (val, SANE_VALUE_SCAN_MODE_COLOR) == 0) {
+ s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE;
+ }
+ }
+#endif
+ return SANE_STATUS_GOOD;
+ }
+ }
+ }
+ return SANE_STATUS_INVAL;
+}
+
+
+SANE_Status
+sane_get_parameters (SANE_Handle handle, SANE_Parameters *params)
+{
+ Tamarack_Scanner *s = handle;
+
+ if (!s->scanning) {
+ double width, height, dpi;
+
+
+ memset (&s->params, 0, sizeof (s->params));
+
+ width = SANE_UNFIX (s->val[OPT_BR_X].w - s->val[OPT_TL_X].w);
+ height = SANE_UNFIX (s->val[OPT_BR_Y].w - s->val[OPT_TL_Y].w);
+ dpi = SANE_UNFIX (s->val[OPT_RESOLUTION].w);
+ s->mode = make_mode (s->val[OPT_MODE].s);
+ DBG(1, "got mode '%s' -> %d.\n", s->val[OPT_MODE].s, s->mode);
+ /* 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;
+ s->params.lines = height * dots_per_mm;
+ }
+ if ((s->mode == THRESHOLDED) || (s->mode == DITHERED)) {
+ s->params.format = SANE_FRAME_GRAY;
+ s->params.bytes_per_line = (s->params.pixels_per_line + 7) / 8;
+ s->params.depth = 1;
+ } else if (s->mode == GREYSCALE) {
+ s->params.format = SANE_FRAME_GRAY;
+ s->params.bytes_per_line = s->params.pixels_per_line;
+ s->params.depth = 8;
+ } else {
+ s->params.format = SANE_FRAME_RED + s->pass;
+ s->params.bytes_per_line = s->params.pixels_per_line;
+ s->params.depth = 8;
+ }
+ s->pass = 0;
+ } else {
+ if (s->mode == TRUECOLOR)
+ s->params.format = SANE_FRAME_RED + s->pass;
+ }
+
+ s->params.last_frame = (s->mode != TRUECOLOR) || (s->pass == 2);
+
+ if (params)
+ *params = s->params;
+
+ DBG(1, "Got parameters: format:%d, ppl: %d, bpl:%d, depth:%d, "
+ "last %d pass %d\n",
+ s->params.format, s->params.pixels_per_line,
+ s->params.bytes_per_line, s->params.depth,
+ s->params.last_frame, s->pass);
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+sane_start (SANE_Handle handle)
+{
+ Tamarack_Scanner *s = handle;
+ SANE_Status status;
+ int fds[2];
+
+ /* 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) {
+ /* translate options into s->mode for convenient access: */
+ s->mode = make_mode (s->val[OPT_MODE].s);
+
+ if (s->mode == TRUECOLOR)
+ {
+ if (s->val[OPT_PREVIEW].w && s->val[OPT_GRAY_PREVIEW].w) {
+ /* Force gray-scale mode when previewing. */
+ s->mode = GREYSCALE;
+ s->params.format = SANE_FRAME_GRAY;
+ s->params.bytes_per_line = s->params.pixels_per_line;
+ s->params.last_frame = SANE_TRUE;
+ }
+ }
+
+ 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));
+ return status;
+ }
+ }
+
+ status = wait_ready (s->fd);
+ if (status != SANE_STATUS_GOOD) {
+ DBG(1, "open: wait_ready() failed: %s\n", sane_strstatus (status));
+ goto stop_scanner_and_return;
+ }
+
+ status = scan_area_and_windows (s);
+ if (status != SANE_STATUS_GOOD) {
+ DBG(1, "open: set scan area command failed: %s\n",
+ sane_strstatus (status));
+ goto stop_scanner_and_return;
+ }
+
+ status = mode_select (s);
+ if (status != SANE_STATUS_GOOD)
+ goto stop_scanner_and_return;
+
+ s->scanning = SANE_TRUE;
+
+ status = start_scan (s);
+ if (status != SANE_STATUS_GOOD)
+ goto stop_scanner_and_return;
+
+ status = get_image_status (s);
+ if (status != SANE_STATUS_GOOD)
+ goto stop_scanner_and_return;
+
+ s->line = 0;
+
+ if (pipe (fds) < 0)
+ return SANE_STATUS_IO_ERROR;
+
+ s->pipe = fds[0];
+ s->reader_pipe = fds[1];
+ s->reader_pid = sanei_thread_begin (reader_process, (void *) s);
+
+ if (sanei_thread_is_forked()) close (s->reader_pipe);
+
+ return SANE_STATUS_GOOD;
+
+stop_scanner_and_return:
+ do_cancel (s);
+ return status;
+}
+
+
+SANE_Status
+sane_read (SANE_Handle handle, SANE_Byte *buf, SANE_Int max_len, SANE_Int *len)
+{
+ Tamarack_Scanner *s = handle;
+ ssize_t nread;
+
+ *len = 0;
+
+ nread = read (s->pipe, buf, max_len);
+ DBG(3, "read %ld bytes\n", (long) nread);
+
+ if (!s->scanning)
+ return do_cancel (s);
+
+ if (nread < 0) {
+ if (errno == EAGAIN) {
+ return SANE_STATUS_GOOD;
+ } else {
+ do_cancel (s);
+ return SANE_STATUS_IO_ERROR;
+ }
+ }
+
+ *len = nread;
+
+ if (nread == 0) {
+ s->pass++;
+ return do_eof (s);
+ }
+ return SANE_STATUS_GOOD;
+}
+
+
+void
+sane_cancel (SANE_Handle handle)
+{
+ Tamarack_Scanner *s = handle;
+
+ if (s->reader_pid != -1)
+ sanei_thread_kill (s->reader_pid);
+ s->scanning = SANE_FALSE;
+}
+
+
+SANE_Status
+sane_set_io_mode (SANE_Handle handle, SANE_Bool non_blocking)
+{
+ Tamarack_Scanner *s = handle;
+
+ if (!s->scanning)
+ return SANE_STATUS_INVAL;
+
+ if (fcntl (s->pipe, F_SETFL, non_blocking ? O_NONBLOCK : 0) < 0)
+ return SANE_STATUS_IO_ERROR;
+
+ return SANE_STATUS_GOOD;
+}
+
+
+SANE_Status
+sane_get_select_fd (SANE_Handle handle, SANE_Int *fd)
+{
+ Tamarack_Scanner *s = handle;
+
+ if (!s->scanning)
+ return SANE_STATUS_INVAL;
+
+ *fd = s->pipe;
+ return SANE_STATUS_GOOD;
+}
+