summaryrefslogtreecommitdiff
path: root/backend/agfafocus.c
diff options
context:
space:
mode:
Diffstat (limited to 'backend/agfafocus.c')
-rw-r--r--backend/agfafocus.c2083
1 files changed, 2083 insertions, 0 deletions
diff --git a/backend/agfafocus.c b/backend/agfafocus.c
new file mode 100644
index 0000000..bc21558
--- /dev/null
+++ b/backend/agfafocus.c
@@ -0,0 +1,2083 @@
+/* sane - Scanner Access Now Easy.
+
+ This file (C) 1997 Ingo Schneider
+ (C) 1998 Karl Anders Øygard
+
+ 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 AGFA Focus flatbed scanners. */
+
+#include "../include/sane/config.h"
+
+#include <signal.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "../include/sane/sane.h"
+#include "../include/sane/sanei.h"
+#include "../include/sane/sanei_config.h"
+#include "../include/sane/saneopts.h"
+#include "../include/sane/sanei_scsi.h"
+#include "../include/sane/sanei_thread.h"
+
+#define BACKEND_NAME agfafocus
+#include "../include/sane/sanei_backend.h"
+
+#include "agfafocus.h"
+
+#ifndef PATH_MAX
+# define PATH_MAX 1024
+#endif
+
+
+#undef Byte
+#define Byte SANE_Byte
+
+static int num_devices;
+static AgfaFocus_Device *agfafocus_devices;
+
+static const SANE_String_Const focus_mode_list[] =
+{
+ "Lineart", "Gray (6 bit)",
+ 0
+};
+
+static const SANE_String_Const focusii_mode_list[] =
+{
+ "Lineart", "Gray (6 bit)", "Gray (8 bit)",
+ 0
+};
+
+static const SANE_String_Const focuscolor_mode_list[] =
+{
+ "Lineart", "Gray (6 bit)", "Gray (8 bit)", "Color (18 bit)", "Color (24 bit)",
+ 0
+};
+
+static const SANE_String_Const halftone_list[] =
+{
+ "None", "Dispersed dot 4x4", "Round (Clustered dot 4x4)", "Diamond (Clustered dot 4x4)",
+ 0
+};
+
+static const SANE_String_Const halftone_upload_list[] =
+{
+ "None", "Dispersed dot 4x4", "Round (Clustered dot 4x4)", "Diamond (Clustered dot 4x4)",
+ 0
+};
+
+static const SANE_String_Const source_list[] =
+{
+ "Opaque/Normal", "Transparency",
+ 0
+};
+
+static const SANE_String_Const quality_list[] =
+{
+ "Low", "Normal", "High",
+ 0
+};
+
+static size_t
+max_string_size (const SANE_String_Const strings[])
+{
+ size_t size, max_size = 0;
+ int i;
+ DBG (11, ">> max_string_size\n");
+
+ for (i = 0; strings[i]; ++i)
+ {
+ size = strlen (strings[i]) + 1;
+ if (size > max_size)
+ max_size = size;
+ }
+
+ DBG (11, "<< max_string_size\n");
+ return max_size;
+}
+
+/* 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;
+ }
+}
+
+/* gets loc_s bytes long value from loc in scsi command */
+static int
+get_size (Byte * loc, int loc_s)
+{
+ int i;
+ int j = 0;
+
+ for (i = 0; i < loc_s; i++)
+ {
+ j = (j << 8) + (loc[i] & 0xff);
+ }
+
+ return j;
+}
+
+static long
+reserve_unit (int fd)
+{
+ struct
+ {
+ /* Command */
+ Byte cmd;
+ Byte lun;
+ Byte res[2];
+ Byte tr_len;
+ Byte ctrl;
+ }
+ scsi_reserve;
+
+ memset (&scsi_reserve, 0, sizeof (scsi_reserve));
+
+ scsi_reserve.cmd = 0x16; /* RELEASE */
+
+ DBG (3, "reserve_unit()\n");
+ return sanei_scsi_cmd (fd, &scsi_reserve, sizeof (scsi_reserve), 0, 0);
+}
+
+static long
+release_unit (int fd)
+{
+ struct
+ {
+ /* Command */
+ Byte cmd;
+ Byte lun;
+ Byte res[2];
+ Byte tr_len;
+ Byte ctrl;
+ }
+ scsi_release;
+
+ memset (&scsi_release, 0, sizeof (scsi_release));
+
+ scsi_release.cmd = 0x17; /* RELEASE */
+
+ DBG (3, "release_unit()\n");
+ return sanei_scsi_cmd (fd, &scsi_release, sizeof (scsi_release), 0, 0);
+}
+
+static SANE_Status
+test_ready (int fd)
+{
+ SANE_Status status;
+ int try;
+
+ struct
+ {
+ /* Command */
+ Byte cmd;
+ Byte lun;
+ Byte res[2];
+ Byte tr_len;
+ Byte ctrl;
+ }
+ scsi_test_ready;
+
+ memset (&scsi_test_ready, 0, sizeof (scsi_test_ready));
+
+ scsi_test_ready.cmd = 0x00; /* TEST UNIT READY */
+
+ 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)
+{
+ scsi_fd = scsi_fd; /* silence gcc */
+ arg = arg; /* silence gcc */
+
+ 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)
+{
+ fd = fd; /* silence gcc */
+
+ /* 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; /* SCAN */
+ 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)
+{
+ struct
+ {
+ Byte bytes[2]; /* Total # of bytes */
+ Byte scan[2]; /* ms to complete - driver sleep time */
+ } result;
+
+ size_t size = sizeof (result);
+ SANE_Status status;
+
+ struct {
+ Byte cmd;
+ Byte lun;
+ Byte data_type;
+ Byte re1[3];
+ Byte tr_len[3];
+ Byte ctrl;
+ } cmd;
+
+ memset (&cmd, 0, sizeof (cmd));
+
+ cmd.cmd = 0x28; /* READ */
+ cmd.data_type = 0x80; /* get scan time */
+
+ set_size (cmd.tr_len, 3, sizeof (result));
+
+ while (1)
+ {
+ status = sanei_scsi_cmd (fd, &cmd, sizeof (cmd),
+ &result, &size);
+
+ if (status != SANE_STATUS_GOOD || size != sizeof (result))
+ {
+ /*
+ 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 = get_size (result.scan, 2);
+
+ 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)
+{
+ struct {
+ Byte reserved1[8];
+ Byte line_width[2];
+ Byte total_lines[2];
+ Byte cur_line[2];
+ Byte lines_this_block[2];
+ Byte reserved[8];
+ } read_sizes;
+
+ const Byte scsi_read[] =
+ {
+ 0x28, 0x00, /* opcode, lun */
+ 0x81, /* data type 81 == read time left */
+ 0x00, 0x00, 0x00, /* reserved */
+ 0x00, 0x00, sizeof (read_sizes), /* transfer length */
+ 0x00, /* control byte */
+ };
+
+ size_t size = sizeof (read_sizes);
+ SANE_Status status;
+
+ status = sanei_scsi_cmd (fd, scsi_read, sizeof (scsi_read), &read_sizes, &size);
+
+ if (status != SANE_STATUS_GOOD || size != sizeof (read_sizes))
+ {
+ /* Command failed */
+ return SANE_STATUS_IO_ERROR;
+ }
+ else
+ {
+ *lines_available = get_size (read_sizes.lines_this_block, 2);
+ *bpl = get_size (read_sizes.cur_line, 2);
+ if (total_lines)
+ *total_lines = get_size (read_sizes.total_lines, 2);
+ }
+
+ 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 (AgfaFocus_Scanner * s)
+/* This function sets and sends the window for scanning */
+{
+ double pixels_per_mm = (double) s->val[OPT_RESOLUTION].w / MM_PER_INCH;
+
+ SANE_Bool auto_bright = s->val[OPT_AUTO_BRIGHTNESS].b;
+ SANE_Bool auto_contr = s->val[OPT_AUTO_CONTRAST].b;
+
+ /* ranges down 255 (dark) down to 1(bright) */
+ int brightness = auto_bright ? 0 : (SANE_UNFIX (s->val[OPT_BRIGHTNESS].w)
+ * -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].w)
+ * 1.27 + 128.5);
+
+ int width;
+
+ /* ranges from 40 (dark) down to 0 (bright) */
+ int bright_adjust = (SANE_UNFIX (s->val[OPT_BRIGHTNESS].w) * -20.0) / 100.0 + 20.0;
+
+ /* ranges from 20 (little contrast) down to -20 = 235 (much contrast) */
+ int contr_adjust = (SANE_UNFIX (s->val[OPT_CONTRAST].w) * -20.0) / 100.0;
+
+ /* Warning ! The following structur SEEMS to be a 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; /* Window ID */
+ Byte autobit; /* Window creation */
+
+ Byte x_axis_res[2]; /* X resolution */
+ Byte y_axis_res[2]; /* X resolution */
+
+ Byte x_axis_ul[2]; /* X upper left */
+ Byte y_axis_ul[2]; /* Y upper left */
+
+ Byte wwidth[2]; /* Width */
+ Byte wlength[2]; /* Length */
+
+ Byte contrast; /* Contrast */
+ Byte dummy1;
+ Byte intensity; /* Intensity */
+
+ Byte image_comp; /* Image composition (0, 2, 5) */
+ Byte bpp; /* Bits per pixel */
+
+ Byte tonecurve; /* Tone curve (0 - 8) */
+ Byte ht_pattern; /* Halftone pattern */
+ Byte paddingtype; /* Padding type */
+
+ Byte bitordering[2]; /* Bit ordering (0 = left to right) */
+ Byte comprtype; /* Compression type */
+ Byte comprarg; /* Compression argument */
+
+ Byte dummy2[6];
+ Byte edge; /* Sharpening (0 - 7) */
+ Byte dummy3;
+
+ Byte bright_adjust; /* */
+ Byte contr_adjust; /* */
+
+ Byte imagewidthtruncation; /* */
+
+ Byte dummy4;
+ Byte quality_type; /* 0 normal, 1 high, 255 low */
+ Byte red_att;
+ Byte green_att;
+ Byte blue_att;
+
+ Byte dummy5[5];
+ Byte color_planes;
+ Byte orig_type;
+ Byte fixturetype;
+ Byte exposure[2];
+ Byte defocus[2];
+ Byte dummy6[4];
+ Byte descreen_factor;
+
+ Byte packing_word_length;
+ Byte packing_number_of_pixels;
+ Byte packing_color_mode;
+ Byte strokenab;
+ Byte rotatenab;
+ Byte autostrokenab;
+ Byte dummy7;
+ }
+ wd;
+
+ }
+ cmd;
+
+ memset (&cmd, 0, sizeof (cmd));
+
+ cmd.cmd = 0x24; /* SET WINDOW PARAMETERS */
+
+ switch (s->hw->type)
+ {
+ case AGFAGRAY64:
+ case AGFALINEART:
+ case AGFAGRAY256:
+ set_size (cmd.tr_len, 3, 36 + 8);
+ set_size (cmd.wd_len, 2, 36);
+ break;
+
+ case AGFACOLOR:
+ set_size (cmd.tr_len, 3, 65 + 8);
+ set_size (cmd.wd_len, 2, 65);
+ break;
+ }
+
+ /* Resolution. Original comment in German: Aufloesung */
+ set_size (cmd.wd.x_axis_res, 2, s->val[OPT_RESOLUTION].w);
+ set_size (cmd.wd.y_axis_res, 2, s->val[OPT_RESOLUTION].w);
+
+ /* 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].w) * pixels_per_mm + 0.5);
+ set_size (cmd.wd.y_axis_ul, 2,
+ SANE_UNFIX (s->val[OPT_TL_Y].w) * pixels_per_mm + 0.5);
+
+ width = (SANE_UNFIX (s->val[OPT_BR_X].w - s->val[OPT_TL_X].w) * pixels_per_mm) + 0.5;
+
+ if (s->bpp == 1 && width % 8)
+ width += 8 - width % 8;
+
+ set_size (cmd.wd.wwidth, 2, width);
+ set_size (cmd.wd.wlength, 2, SANE_UNFIX (s->val[OPT_BR_Y].w - s->val[OPT_TL_Y].w)
+ * pixels_per_mm + 0.5);
+
+ cmd.wd.bpp = s->bpp;
+
+ if (s->mode == COLOR18BIT ||
+ s->mode == COLOR24BIT)
+ {
+ cmd.wd.paddingtype = 3;
+ cmd.wd.ht_pattern = 3;
+
+ cmd.wd.red_att = s->r_att;
+ cmd.wd.blue_att = s->g_att;
+ cmd.wd.green_att = s->b_att;
+ cmd.wd.color_planes = 0x0e;
+
+ set_size (cmd.wd.exposure, 2, s->exposure);
+
+ cmd.wd.packing_word_length = 1;
+ cmd.wd.packing_number_of_pixels = 1;
+ cmd.wd.packing_color_mode = 2;
+
+ if (s->bpp == 6)
+ cmd.wd.edge = s->edge;
+
+ DBG (3,
+ "Setting parameters: imc %d, bpp %d, res %d, exp %d, attenuation [%d, %d, %d], edge %d\n",
+ s->image_composition, s->bpp, s->val[OPT_RESOLUTION].w,
+ s->exposure, cmd.wd.red_att, cmd.wd.blue_att, cmd.wd.green_att, s->edge);
+ }
+ else
+ {
+ if (s->bpp == 1)
+ cmd.wd.ht_pattern = s->halftone;
+ else
+ cmd.wd.ht_pattern = 3;
+
+ cmd.wd.intensity = brightness;
+ cmd.wd.contrast = contrast;
+
+ cmd.wd.contr_adjust = contr_adjust;
+ cmd.wd.bright_adjust = bright_adjust;
+
+ cmd.wd.tonecurve = s->tonecurve;
+ cmd.wd.paddingtype = 3;
+ cmd.wd.edge = s->edge;
+
+ if (s->lin_log)
+ cmd.wd.dummy3 = 0x02;
+
+ DBG (3,
+ "Setting parameters: imc %d, bpp %d, res %d, bri %d, con %d, bad %d, cad %d, ht %d, edge %d\n",
+ s->image_composition, s->bpp, s->val[OPT_RESOLUTION].w,
+ brightness, contrast, bright_adjust, contr_adjust, s->halftone, s->edge);
+ }
+
+ cmd.wd.image_comp = s->image_composition;
+ cmd.wd.quality_type = s->quality;
+ cmd.wd.orig_type = s->original;
+
+ return sanei_scsi_cmd (s->fd, &cmd, sizeof (cmd), 0, 0);
+}
+
+/* Tell scanner to scan more data. */
+
+static SANE_Status
+request_more_data (AgfaFocus_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;
+
+ if (!s->hw->disconnect)
+ wait_ready (s->fd);
+
+ status = get_read_sizes (s->fd, &lines_available, &bytes_per_line, 0);
+
+ if (!lines_available)
+ return SANE_STATUS_INVAL;
+
+ s->lines_available = lines_available;
+
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+upload_dither_matrix (AgfaFocus_Scanner * s, int rows, int cols, int *dither_matrix)
+{
+ struct {
+ Byte cmd;
+ Byte lun;
+ Byte data_type;
+ Byte re1[3];
+ Byte tr_len[3];
+ Byte ctrl;
+
+ struct {
+ Byte nrrows[2];
+ Byte nrcols[2];
+
+ struct {
+ Byte data[2];
+ } element[256];
+ } wd;
+ } cmd;
+
+ SANE_Status status;
+ int i;
+
+ memset (&cmd, 0, sizeof (cmd));
+
+ cmd.cmd = 0x2a; /* WRITE */
+ cmd.data_type = 0x81; /* upload dither matrix */
+
+ set_size (cmd.tr_len, 3, 4 + (2 * rows * cols));
+ set_size (cmd.wd.nrrows, 2, rows);
+ set_size (cmd.wd.nrcols, 2, cols);
+
+ for (i = 0; i < cols * rows; ++i)
+ set_size (cmd.wd.element[i].data, 2, dither_matrix[i]);
+
+ status = sanei_scsi_cmd (s->fd, &cmd, sizeof (cmd), 0, 0);
+
+ if (status != SANE_STATUS_GOOD)
+ /* Command failed */
+ return SANE_STATUS_IO_ERROR;
+
+ DBG (1, "upload_dither_matrix(): uploaded dither matrix: %d, %d\n", rows, cols);
+
+ return SANE_STATUS_GOOD;
+}
+
+#if 0
+static SANE_Status
+upload_tonecurve (AgfaFocus_Scanner * s, int color_type, int input, int output, int dither_matrix[256])
+{
+ struct {
+ Byte cmd;
+ Byte lun;
+ Byte re1[4];
+ Byte tr_len[3];
+ Byte ctrl;
+
+ Byte re2[6];
+ Byte wd_len[2];
+
+ struct {
+ Byte color_type[2];
+ Byte nrinput[2];
+ Byte nroutput[2];
+
+ struct {
+ Byte data[2];
+ } outputval[256];
+ } wd;
+ } cmd;
+
+ SANE_Status status;
+ int i, j;
+
+ memset (&cmd, 0, sizeof (cmd));
+
+ cmd.cmd = 0x80;
+
+ set_size (cmd.tr_len, 3, sizeof (cmd.wd));
+ set_size (cmd.wd.nrrows, 2, rows);
+ set_size (cmd.wd.nrrows, 2, cols);
+
+ for (i = 0; i < cols; ++i)
+ for (j = 0; j < rows; ++j)
+ set_size (cmd.wd.element[j + i * rows].data, 2, dither_matrix[j + i * rows]);
+
+ status = sanei_scsi_cmd (s->fd, &cmd, sizeof (cmd), 0, 0);
+
+ if (status != SANE_STATUS_GOOD)
+ /* * Command failed * */
+ return SANE_STATUS_IO_ERROR;
+
+ DBG (1, "upload_dither_matrix(): uploaded dither matrix\n");
+
+ return SANE_STATUS_GOOD;
+}
+#endif
+
+/* 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_data (AgfaFocus_Scanner * s, SANE_Byte *buf, int lines, int bpl)
+{
+ struct {
+ Byte cmd;
+ Byte lun;
+ Byte re1[4];
+ Byte tr_len[3];
+ Byte ctrl;
+ } cmd;
+
+ SANE_Status status;
+ size_t size;
+ unsigned int i;
+
+ memset (&cmd, 0, sizeof (cmd));
+
+ cmd.cmd = 0x28; /* READ */
+
+ set_size (cmd.tr_len, 3, lines);
+ size = lines * bpl;
+
+ status = sanei_scsi_cmd (s->fd, &cmd, sizeof (cmd), buf, &size);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (1, "sanei_scsi_cmd() = %d\n", status);
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ if (size != ((unsigned int) lines * bpl))
+ {
+ DBG (1, "sanei_scsi_cmd(): got %lu bytes, expected %d\n",
+ (u_long) size, lines * bpl);
+ return SANE_STATUS_INVAL;
+ }
+
+ DBG (1, "Got %lu bytes\n", (u_long) size);
+
+ /* Reverse: */
+ if (s->bpp != 1)
+ {
+ if (s->bpp != 6)
+ for (i = 0; i < size; i++)
+ buf[i] = 255 - buf[i];
+ else
+ for (i = 0; i < size; i++)
+ buf[i] = 255 - ((buf[i] * 256.0f) / 64.0f);
+ }
+
+ s->lines_available -= lines;
+
+ return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+attach (const char *devname, AgfaFocus_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;
+ AgfaFocus_Device *dev;
+ SANE_Status status;
+ size_t size;
+ int i;
+
+ for (dev = agfafocus_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 (4, "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 ((char *)result + 36, "AGFA0", 5))
+ {
+ DBG (1, "attach: device doesn't look like a Siemens 9036 scanner\n");
+ return SANE_STATUS_INVAL;
+ }
+
+ DBG (4, "Inquiry data:\n");
+ DBG (4, "-----------\n");
+ for (i = 5; i < 55; i += 10)
+ DBG (4, "%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);
+ if (!strncmp ((char *)result + 36, "AGFA01", 6)) {
+ dev->sane.vendor = "AGFA";
+ dev->sane.model = "Focus GS Scanner (6 bit)";
+ dev->upload_user_defines = SANE_TRUE;
+ dev->type = AGFAGRAY64;
+ } else if (!strncmp ((char *)result + 36, "AGFA02", 6)) {
+ dev->sane.vendor = "AGFA";
+ dev->sane.model = "Focus Lineart Scanner";
+ dev->upload_user_defines = SANE_FALSE;
+ dev->type = AGFALINEART;
+ } else if (!strncmp ((char *)result + 36, "AGFA03", 6)) {
+ dev->sane.vendor = "AGFA";
+ dev->sane.model = "Focus II";
+ dev->upload_user_defines = SANE_TRUE;
+ dev->type = AGFAGRAY256;
+ } else if (!strncmp ((char *)result + 36, "AGFA04", 6)) {
+ dev->sane.vendor = "AGFA";
+ dev->sane.model = "Focus Color";
+ dev->upload_user_defines = SANE_TRUE;
+ dev->type = AGFACOLOR;
+ } else {
+ free (dev);
+ DBG (1, "attach: device looks like an AGFA scanner, but wasn't recognised\n");
+ return SANE_STATUS_INVAL;
+ }
+ dev->sane.type = "flatbed scanner";
+
+ dev->transparent = result[45] & 0x80 ? SANE_TRUE : SANE_FALSE;
+ dev->analoglog = result[46] & 0x80 ? SANE_TRUE : SANE_FALSE;
+ dev->tos5 = result[46] & 0x05 ? SANE_TRUE : SANE_FALSE;
+ dev->quality = result[47] & 0x40 ? SANE_TRUE : SANE_FALSE;
+ dev->disconnect = result[47] & 0x80 ? SANE_TRUE : SANE_FALSE;
+
+ DBG (4, "\n");
+ DBG (4, "scan modes:\n");
+ DBG (4, "-----------\n");
+ DBG (4, "three pass color mode: %s\n", dev->type >= AGFACOLOR ? "yes" : "no");
+ DBG (4, "8 bit gray mode: %s\n", dev->type >= AGFAGRAY64 ? "yes" : "no");
+ DBG (4, "uploadable matrices: %s\n", dev->upload_user_defines ? "yes" : "no");
+ DBG (4, "transparency: %s\n", dev->transparent ? "yes" : "no");
+ DBG (4, "disconnect: %s\n", dev->disconnect ? "yes" : "no");
+ DBG (4, "quality calibration: %s\n", dev->quality ? "yes" : "no");
+
+ dev->handle = 0;
+
+ DBG (3, "attach: found AgfaFocus scanner model\n");
+
+ ++num_devices;
+ dev->next = agfafocus_devices;
+ agfafocus_devices = dev;
+
+ if (devp)
+ *devp = dev;
+
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+do_eof (AgfaFocus_Scanner *s)
+{
+ if (s->pipe >= 0)
+ {
+ close (s->pipe);
+ s->pipe = -1;
+ }
+ return SANE_STATUS_EOF;
+}
+
+
+static SANE_Status
+do_cancel (AgfaFocus_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->fd);
+ release_unit (s->fd);
+ sanei_scsi_close (s->fd);
+ s->fd = -1;
+ }
+
+ return SANE_STATUS_CANCELLED;
+}
+
+
+static SANE_Status
+init_options (AgfaFocus_Scanner * s)
+{
+ int i;
+
+ /* Hardware Limitations: must be static ! */
+ 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 sharpen_range =
+ {0, 7, 1};
+ static const SANE_Range exposure_range =
+ {0, 100, 0};
+ static const SANE_Range attenuation_range =
+ {
+ 0 << SANE_FIXED_SCALE_SHIFT, /* minimum */
+ 100 << SANE_FIXED_SCALE_SHIFT, /* maximum */
+ 1 << SANE_FIXED_SCALE_SHIFT /* quantization */
+ };
+
+
+ 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].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 = SANE_DESC_SCAN_MODE;
+ s->opt[OPT_MODE].type = SANE_TYPE_STRING;
+
+ switch (s->hw->type)
+ {
+ case AGFACOLOR:
+ s->opt[OPT_MODE].size = max_string_size (focuscolor_mode_list);
+ s->opt[OPT_MODE].constraint.string_list = focuscolor_mode_list;
+ s->val[OPT_MODE].s = strdup (focuscolor_mode_list[0]);
+ break;
+ case AGFAGRAY256:
+ s->opt[OPT_MODE].size = max_string_size (focusii_mode_list);
+ s->opt[OPT_MODE].constraint.string_list = focusii_mode_list;
+ s->val[OPT_MODE].s = strdup (focusii_mode_list[0]);
+ break;
+ default:
+ s->opt[OPT_MODE].size = max_string_size (focus_mode_list);
+ s->opt[OPT_MODE].constraint.string_list = focus_mode_list;
+ s->val[OPT_MODE].s = strdup (focus_mode_list[0]);
+ break;
+ }
+
+ s->opt[OPT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+
+ /* 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].w = 100;
+
+ s->opt[OPT_SOURCE].name = SANE_NAME_SCAN_SOURCE;
+ s->opt[OPT_SOURCE].title = SANE_TITLE_SCAN_SOURCE;
+ s->opt[OPT_SOURCE].desc = SANE_DESC_SCAN_SOURCE;
+ s->opt[OPT_SOURCE].type = SANE_TYPE_STRING;
+ s->opt[OPT_SOURCE].unit = SANE_UNIT_NONE;
+ if (!s->hw->transparent)
+ s->opt[OPT_SOURCE].cap |= SANE_CAP_INACTIVE;
+ else
+ s->opt[OPT_SOURCE].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_SOURCE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+ s->opt[OPT_SOURCE].constraint.string_list = source_list;
+ s->opt[OPT_SOURCE].size = max_string_size (source_list);
+ s->val[OPT_SOURCE].s = strdup (source_list[0]);
+
+ /* "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].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 = &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 = &x_range;
+ s->val[OPT_BR_X].w = 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].w = 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;
+
+ /* exposure */
+ s->opt[OPT_EXPOSURE].name = "exposure";
+ s->opt[OPT_EXPOSURE].title = "Exposure";
+ s->opt[OPT_EXPOSURE].desc = "Analog exposure control.";
+ s->opt[OPT_EXPOSURE].type = SANE_TYPE_INT;
+ s->opt[OPT_EXPOSURE].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_EXPOSURE].unit = SANE_UNIT_PERCENT;
+ s->opt[OPT_EXPOSURE].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_EXPOSURE].constraint.range = &exposure_range;
+ s->val[OPT_EXPOSURE].w = 23;
+
+ /* brightness automatic correct */
+ s->opt[OPT_AUTO_BRIGHTNESS].name = "adjust-bright";
+ s->opt[OPT_AUTO_BRIGHTNESS].title = "Automatic brightness correction";
+ s->opt[OPT_AUTO_BRIGHTNESS].desc = "Turns on automatic brightness correction of "
+ "the acquired image. This makes the scanner do a two pass scan to analyse the "
+ "brightness of the image before it's scanned.";
+ s->opt[OPT_AUTO_BRIGHTNESS].type = SANE_TYPE_BOOL;
+ s->val[OPT_AUTO_BRIGHTNESS].b = SANE_FALSE;
+
+ /* contrast automatic correct */
+ s->opt[OPT_AUTO_CONTRAST].name = "adjust-contr";
+ s->opt[OPT_AUTO_CONTRAST].title = "Automatic contrast correction";
+ s->opt[OPT_AUTO_CONTRAST].desc = "Turns on automatic contrast correction of "
+ "the acquired image. This makes the scanner do a two pass scan to analyse "
+ "the contrast of the image to be scanned.";
+ s->opt[OPT_AUTO_CONTRAST].type = SANE_TYPE_BOOL;
+ s->val[OPT_AUTO_CONTRAST].b = SANE_FALSE;
+
+ /* brightness */
+ s->opt[OPT_BRIGHTNESS].name = SANE_NAME_BRIGHTNESS;
+ s->opt[OPT_BRIGHTNESS].title = SANE_TITLE_BRIGHTNESS;
+ s->opt[OPT_BRIGHTNESS].desc = "Controls the brightness of the acquired image. "
+ "When automatic brightness is enabled, this can be used to adjust the selected brightness.";
+ 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 = 0;
+
+ /* contrast */
+ s->opt[OPT_CONTRAST].name = SANE_NAME_CONTRAST;
+ s->opt[OPT_CONTRAST].title = SANE_TITLE_CONTRAST;
+ s->opt[OPT_CONTRAST].desc = "Controls the contrast of the acquired image. "
+ "When automatic contrast is enabled, this can be used to adjust the selected contrast.";
+ 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 = 0;
+
+ /* halftone patterns */
+ s->opt[OPT_HALFTONE_PATTERN].name = SANE_NAME_HALFTONE_PATTERN;
+ s->opt[OPT_HALFTONE_PATTERN].title = SANE_TITLE_HALFTONE_PATTERN;
+ s->opt[OPT_HALFTONE_PATTERN].desc = SANE_DESC_HALFTONE_PATTERN;
+ s->opt[OPT_HALFTONE_PATTERN].type = SANE_TYPE_STRING;
+ s->opt[OPT_HALFTONE_PATTERN].size = 32;
+ s->opt[OPT_HALFTONE_PATTERN].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+ if (s->hw->upload_user_defines)
+ {
+ s->opt[OPT_HALFTONE_PATTERN].constraint.string_list = halftone_upload_list;
+ s->val[OPT_HALFTONE_PATTERN].s = strdup (halftone_upload_list[0]);
+ }
+ else
+ {
+ s->opt[OPT_HALFTONE_PATTERN].constraint.string_list = halftone_list;
+ s->val[OPT_HALFTONE_PATTERN].s = strdup (halftone_list[0]);
+ }
+
+ /* red-attenuation */
+ s->opt[OPT_ATTENUATION_RED].name = "red-attenuation";
+ s->opt[OPT_ATTENUATION_RED].title = "Red attenuation";
+ s->opt[OPT_ATTENUATION_RED].desc = "Controls the red attenuation of the acquired image. "
+ "Higher values mean less impact on scanned image.";
+ s->opt[OPT_ATTENUATION_RED].type = SANE_TYPE_FIXED;
+ s->opt[OPT_ATTENUATION_RED].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_RED].unit = SANE_UNIT_PERCENT;
+ s->opt[OPT_ATTENUATION_RED].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_ATTENUATION_RED].constraint.range = &attenuation_range;
+ s->val[OPT_ATTENUATION_RED].w = SANE_FIX (50.0);
+
+ /* green-attenuation */
+ s->opt[OPT_ATTENUATION_GREEN].name = "green-attenuation";
+ s->opt[OPT_ATTENUATION_GREEN].title = "Green attenuation";
+ s->opt[OPT_ATTENUATION_GREEN].desc = "Controls the green attenuation of the acquired image. "
+ "Higher values mean less impact on scanned image.";
+ s->opt[OPT_ATTENUATION_GREEN].type = SANE_TYPE_FIXED;
+ s->opt[OPT_ATTENUATION_GREEN].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_GREEN].unit = SANE_UNIT_PERCENT;
+ s->opt[OPT_ATTENUATION_GREEN].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_ATTENUATION_GREEN].constraint.range = &attenuation_range;
+ s->val[OPT_ATTENUATION_GREEN].w = SANE_FIX (50.0);
+
+ /* blue-attenuation */
+ s->opt[OPT_ATTENUATION_BLUE].name = "blue-attenuation";
+ s->opt[OPT_ATTENUATION_BLUE].title = "Blue attenuation";
+ s->opt[OPT_ATTENUATION_BLUE].desc = "Controls the blue attenuation of the acquired image. "
+ "Higher values mean less impact on scanned image.";
+ s->opt[OPT_ATTENUATION_BLUE].type = SANE_TYPE_FIXED;
+ s->opt[OPT_ATTENUATION_BLUE].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_BLUE].unit = SANE_UNIT_PERCENT;
+ s->opt[OPT_ATTENUATION_BLUE].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_ATTENUATION_BLUE].constraint.range = &attenuation_range;
+ s->val[OPT_ATTENUATION_BLUE].w = SANE_FIX (50.0);
+
+ /* quality-calibration */
+ s->opt[OPT_QUALITY].name = SANE_NAME_QUALITY_CAL;
+ s->opt[OPT_QUALITY].title = SANE_TITLE_QUALITY_CAL;
+ s->opt[OPT_QUALITY].desc = "Controls the calibration that will be done in the "
+ "scanner. Less calibration result in faster scanner times.";
+ s->opt[OPT_QUALITY].type = SANE_TYPE_STRING;
+ s->opt[OPT_QUALITY].size = 32;
+ if (!s->hw->quality)
+ s->opt[OPT_QUALITY].cap |= SANE_CAP_INACTIVE;
+ else
+ s->opt[OPT_QUALITY].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_QUALITY].constraint_type = SANE_CONSTRAINT_STRING_LIST;
+ s->opt[OPT_QUALITY].constraint.string_list = quality_list;
+ s->val[OPT_QUALITY].s = strdup (quality_list[1]);
+
+ /* sharpening */
+ s->opt[OPT_SHARPEN].name = "sharpen";
+ s->opt[OPT_SHARPEN].title = "Sharpening";
+ s->opt[OPT_SHARPEN].desc = "Controls the sharpening that will be "
+ "done by the video processor in the scanner.";
+ s->opt[OPT_SHARPEN].type = SANE_TYPE_INT;
+ s->opt[OPT_SHARPEN].unit = SANE_UNIT_NONE;
+ s->opt[OPT_SHARPEN].constraint_type = SANE_CONSTRAINT_RANGE;
+ s->opt[OPT_SHARPEN].constraint.range = &sharpen_range;
+ s->val[OPT_SHARPEN].w = 1;
+
+ 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;
+
+ authorize = authorize; /* silence gcc */
+
+ DBG_INIT ();
+
+ sanei_thread_init ();
+
+ if (version_code)
+ *version_code = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, V_MINOR, 0);
+
+ fp = sanei_config_open ("agfafocus.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)
+{
+ AgfaFocus_Device *dev, *next;
+
+ for (dev = agfafocus_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;
+ AgfaFocus_Device *dev;
+ int i;
+
+ local_only = local_only; /* silence gcc */
+
+ if (devlist)
+ free (devlist);
+
+ devlist = malloc ((num_devices + 1) * sizeof (devlist[0]));
+ if (!devlist)
+ return SANE_STATUS_NO_MEM;
+
+ for (dev = agfafocus_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)
+{
+ AgfaFocus_Device *dev;
+ SANE_Status status;
+ AgfaFocus_Scanner *s;
+
+ if (devicename[0])
+ {
+ status = attach (devicename, &dev);
+ if (status != SANE_STATUS_GOOD)
+ return status;
+ }
+ else
+ {
+ /* empty devicname -> use first device */
+ dev = agfafocus_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)
+{
+ AgfaFocus_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)
+{
+ AgfaFocus_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)
+{
+ AgfaFocus_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_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_SHARPEN:
+ case OPT_EXPOSURE:
+ case OPT_ATTENUATION_RED:
+ case OPT_ATTENUATION_GREEN:
+ case OPT_ATTENUATION_BLUE:
+ *(SANE_Word *) val = s->val[option].w;
+ break;
+ case OPT_AUTO_BRIGHTNESS:
+ case OPT_AUTO_CONTRAST:
+ *(SANE_Bool *) val = s->val[option].b;
+ break;
+ case OPT_MODE:
+ case OPT_HALFTONE_PATTERN:
+ case OPT_QUALITY:
+ case OPT_SOURCE:
+ strcpy (val, s->val[option].s);
+ return (SANE_STATUS_GOOD);
+ 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_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_SHARPEN:
+ case OPT_EXPOSURE:
+ case OPT_ATTENUATION_RED:
+ case OPT_ATTENUATION_GREEN:
+ case OPT_ATTENUATION_BLUE:
+ case OPT_BRIGHTNESS:
+ case OPT_CONTRAST:
+ s->val[option].w = *(SANE_Word *) val;
+ break;
+ case OPT_AUTO_BRIGHTNESS:
+ case OPT_AUTO_CONTRAST:
+ s->val[option].b = *(SANE_Bool *) val;
+ break;
+ case OPT_MODE:
+ if (strcmp (s->val[option].s, (SANE_String) val))
+ {
+ if (info)
+ *info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
+
+ if (s->val[option].s)
+ free (s->val[option].s);
+
+ s->val[option].s = strdup (val);
+
+ if (strcmp (s->val[option].s, "Gray (6 bit)") == 0)
+ s->mode = GRAY6BIT;
+ else if (strcmp (s->val[option].s, "Gray (8 bit)") == 0)
+ s->mode = GRAY8BIT;
+ else if (strcmp (s->val[option].s, "Color (18 bit)") == 0)
+ s->mode = COLOR18BIT;
+ else if (strcmp (s->val[option].s, "Color (24 bit)") == 0)
+ s->mode = COLOR24BIT;
+ else
+ s->mode = LINEART;
+
+ switch (s->mode)
+ {
+ case LINEART:
+ s->opt[OPT_HALFTONE_PATTERN].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_SHARPEN].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_EXPOSURE].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_RED].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_GREEN].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_BLUE].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_BRIGHTNESS].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_BRIGHTNESS].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
+ break;
+
+ case GRAY6BIT:
+ s->opt[OPT_SHARPEN].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_EXPOSURE].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_RED].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_GREEN].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_BLUE].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_BRIGHTNESS].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_BRIGHTNESS].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_HALFTONE_PATTERN].cap |= SANE_CAP_INACTIVE;
+ break;
+
+ case GRAY8BIT:
+ s->opt[OPT_BRIGHTNESS].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_BRIGHTNESS].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_EXPOSURE].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_RED].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_GREEN].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_BLUE].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_HALFTONE_PATTERN].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_SHARPEN].cap |= SANE_CAP_INACTIVE;
+ break;
+
+ case COLOR18BIT:
+ s->opt[OPT_EXPOSURE].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_RED].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_GREEN].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_BLUE].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_BRIGHTNESS].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_CONTRAST].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_BRIGHTNESS].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_CONTRAST].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_SHARPEN].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_HALFTONE_PATTERN].cap |= SANE_CAP_INACTIVE;
+ break;
+
+ case COLOR24BIT:
+ s->opt[OPT_EXPOSURE].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_RED].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_GREEN].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_ATTENUATION_BLUE].cap &= ~SANE_CAP_INACTIVE;
+ s->opt[OPT_BRIGHTNESS].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_CONTRAST].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_BRIGHTNESS].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_AUTO_CONTRAST].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_SHARPEN].cap |= SANE_CAP_INACTIVE;
+ s->opt[OPT_HALFTONE_PATTERN].cap |= SANE_CAP_INACTIVE;
+ break;
+ }
+ }
+ break;
+ case OPT_SOURCE:
+ case OPT_QUALITY:
+ case OPT_HALFTONE_PATTERN:
+ if (info && strcmp (s->val[option].s, (SANE_String) val))
+ *info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
+ if (s->val[option].s)
+ free (s->val[option].s);
+ s->val[option].s = strdup (val);
+ 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)
+{
+ AgfaFocus_Scanner *s = handle;
+
+ if (!s->scanning)
+ {
+ double width, height, dpi;
+ const char *quality;
+ const char *original;
+
+ 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 = s->val[OPT_RESOLUTION].w;
+
+ /* 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;
+ }
+
+ /* Should we specify calibration quality? */
+
+ if (SANE_OPTION_IS_ACTIVE (s->opt[OPT_QUALITY].cap))
+ {
+ DBG(3, " -------------- setting quality\n");
+ quality = s->val[OPT_QUALITY].s;
+ if (strcmp (quality, "Low") == 0 )
+ s->quality = 255;
+ else if (strcmp (quality, "High") == 0)
+ s->quality = 1;
+ else
+ s->quality = 0;
+ }
+ else
+ s->quality = 0;
+
+ /* Should we select source type? */
+
+ if (SANE_OPTION_IS_ACTIVE (s->opt[OPT_SOURCE].cap))
+ {
+ DBG(3, " -------------- setting source\n");
+ original = s->val[OPT_SOURCE].s;
+ if (strcmp (original, "Transparency") == 0)
+ s->original = 0;
+ else
+ s->original = 1;
+ }
+ else
+ s->original = 0;
+
+ s->exposure = ((s->val[OPT_EXPOSURE].w * (255.0f - 80.0f)) / 100.0f) + 80.0f;
+ s->r_att = (SANE_UNFIX (s->val[OPT_ATTENUATION_RED].w) * 20.0f) / 100.0f;
+ s->g_att = (SANE_UNFIX (s->val[OPT_ATTENUATION_GREEN].w) * 20.0f) / 100.0f;
+ s->b_att = (SANE_UNFIX (s->val[OPT_ATTENUATION_BLUE].w) * 20.0f) / 100.0f;
+ s->tonecurve = 0;
+
+ switch (s->mode)
+ {
+ case LINEART:
+ {
+ const char *halftone;
+
+ s->image_composition = 0;
+
+ /* in 1 bpp mode, lines need to be 8 pixel length */
+
+ if (s->params.pixels_per_line % 8)
+ s->params.pixels_per_line += 8 - (s->params.pixels_per_line % 8);
+
+ s->params.format = SANE_FRAME_GRAY;
+ s->params.bytes_per_line = s->params.pixels_per_line / 8;
+ s->bpp = s->params.depth = 1;
+
+ halftone = s->val[OPT_HALFTONE_PATTERN].s;
+ if (strcmp (halftone, "1") == 0 )
+ s->halftone = 1;
+ else if (strcmp (halftone, "Dispersed dot 4x4") == 0)
+ s->halftone = 2;
+ else if (strcmp (halftone, "Round (Clustered dot 4x4)") == 0)
+ s->halftone = 3;
+ else if (strcmp (halftone, "Diamond (Clustered dot 4x4)") == 0)
+ s->halftone = 4;
+ else if (strcmp (halftone, "User defined") == 0)
+ s->halftone = 5;
+ else
+ s->halftone = 0;
+
+ s->edge = s->val[OPT_SHARPEN].w;
+ }
+ break;
+
+ case GRAY6BIT:
+ s->image_composition = 2;
+
+ s->params.format = SANE_FRAME_GRAY;
+ s->params.bytes_per_line = s->params.pixels_per_line;
+ s->bpp = 6;
+ s->params.depth = 8;
+ s->edge = s->val[OPT_SHARPEN].w;
+
+ break;
+
+ case GRAY8BIT:
+ s->image_composition = 2;
+
+ s->params.format = SANE_FRAME_GRAY;
+ s->params.bytes_per_line = s->params.pixels_per_line;
+ s->bpp = s->params.depth = 8;
+
+ break;
+
+ case COLOR18BIT:
+ s->image_composition = 5;
+
+ s->params.format = SANE_FRAME_RED;
+ s->params.bytes_per_line = s->params.pixels_per_line;
+ s->bpp = 6;
+ s->params.depth = 8;
+ s->edge = s->val[OPT_SHARPEN].w;
+
+ break;
+
+ case COLOR24BIT:
+ s->image_composition = 5;
+
+ s->params.format = SANE_FRAME_RED;
+ s->params.bytes_per_line = s->params.pixels_per_line;
+ s->bpp = s->params.depth = 8;
+
+ break;
+ }
+
+ s->pass = 0;
+
+ /*s->params.bytes_per_line =
+ (s->params.pixels_per_line + (8 - s->params.depth))
+ / (8 / s->params.depth);*/
+ }
+ else
+ if (s->mode == COLOR18BIT ||
+ s->mode == COLOR24BIT)
+ s->params.format = SANE_FRAME_RED + s->pass;
+
+ s->params.last_frame = (s->params.format != SANE_FRAME_RED && s->params.format != SANE_FRAME_GREEN);
+
+ if (params)
+ *params = s->params;
+ 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)
+{
+ AgfaFocus_Scanner *s = (AgfaFocus_Scanner *) scanner;
+ int fd = s->reader_pipe;
+
+ SANE_Status status;
+ SANE_Byte *data;
+ int lines_read = 0;
+ int lines_per_buffer;
+ int bytes_per_line = 0, total_lines = 0;
+ int i;
+ sigset_t sigterm_set;
+ sigset_t ignore_set;
+ struct SIGACTION act;
+
+ 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);
+
+ if (!s->hw->disconnect)
+ wait_ready (s->fd);
+
+ status = get_read_sizes (s->fd, &s->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);
+ close (fd);
+ return 1;
+ }
+
+ if (!s->lines_available || !bytes_per_line || !total_lines || bytes_per_line < s->params.bytes_per_line)
+ {
+ DBG (1, "open: invalid sizes: %d, %d, %d\n",
+ s->lines_available, bytes_per_line, total_lines);
+ do_cancel (s);
+ close (fd);
+ return 1;
+ }
+
+ lines_per_buffer = sanei_scsi_max_request_size / bytes_per_line;
+ if (!lines_per_buffer)
+ {
+ close (fd);
+ return 2; /* resolution is too high */
+ }
+
+ data = malloc (lines_per_buffer * bytes_per_line);
+ if (!data)
+ {
+ DBG (1, "open malloc(%lu) failed.\n", (u_long) lines_per_buffer * bytes_per_line);
+ do_cancel (s);
+ close (fd);
+ return 1;
+ }
+
+ while (lines_read < s->params.lines)
+ {
+ int lines = lines_per_buffer;
+
+ if (s->lines_available == 0)
+ {
+ /* No lines in scanner? Scan some more */
+ status = request_more_data (s);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ close (fd);
+ return 1;
+ }
+ }
+
+ /* We only request as many lines as there are already scanned */
+ if (lines > s->lines_available)
+ lines = s->lines_available;
+
+ DBG (1, "Requesting %d lines, in scanner: %d, total: %d\n", lines,
+ s->lines_available, s->params.lines);
+
+ status = read_data (s, data, lines, bytes_per_line);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (1, "sane_read: read_data() failed (%s)\n",
+ sane_strstatus (status));
+ do_cancel (s);
+ close (fd);
+ return 1;
+ }
+
+ /* Sometimes the scanner will return more bytes per line than
+ requested, so we copy only what we wanted. */
+
+ for (i = 0; i < lines; i++)
+ if (write (fd, data + i * bytes_per_line, s->params.bytes_per_line) != s->params.bytes_per_line)
+ {
+ do_cancel (s);
+ close (fd);
+ return 1;
+ }
+
+ lines_read += lines;
+ }
+
+ close (fd);
+ return 0;
+}
+
+SANE_Status
+sane_start (SANE_Handle handle)
+{
+ AgfaFocus_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;
+
+ /* don't initialise scanner if we're doing a three-pass scan */
+
+ if (s->pass == 0)
+ {
+ 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;
+ }
+
+ {
+ int matrix[256] = {
+ 2, 60, 16, 56, 3, 57, 13, 53,
+ 34, 18, 48, 32, 35, 19, 45, 29,
+ 10, 50, 6, 63, 11, 51, 7, 61,
+ 42, 26, 38, 22, 43, 27, 39, 23,
+ 4, 58, 14, 54, 1, 59, 15, 55,
+ 36, 20, 46, 30, 33, 17, 47, 31,
+ 12, 52, 8, 62, 9, 49, 5, 63,
+ 44, 28, 40, 24, 41, 25, 37, 21
+ };
+
+ status = upload_dither_matrix (s, 8, 8, matrix);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (1, "open: upload_dither_matrix() 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;
+ }
+ }
+ else
+ {
+ /* continue three-pass scan */
+
+ status = start_scan (s->fd, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (1, "open: start_scan() failed: %s\n", sane_strstatus (status));
+ do_cancel (s);
+ return status;
+ }
+ }
+
+ 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;
+}
+
+SANE_Status
+sane_read (SANE_Handle handle, SANE_Byte * buf, SANE_Int max_len,
+ SANE_Int * len)
+{
+ AgfaFocus_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)
+{
+ AgfaFocus_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)
+{
+ AgfaFocus_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)
+{
+ AgfaFocus_Scanner *s = handle;
+
+ if (!s->scanning)
+ return SANE_STATUS_INVAL;
+
+ *fd = s->pipe;
+ return SANE_STATUS_GOOD;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 07:45:14 +0000