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Diffstat (limited to 'backend/teco3.c')
| -rw-r--r-- | backend/teco3.c | 2255 |
1 files changed, 2255 insertions, 0 deletions
diff --git a/backend/teco3.c b/backend/teco3.c new file mode 100644 index 0000000..e66d95d --- /dev/null +++ b/backend/teco3.c @@ -0,0 +1,2255 @@ +/* sane - Scanner Access Now Easy. + + Copyright (C) 2002 Frank Zago (sane at zago dot net) + + 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. + + As a special exception, the authors of SANE give permission for + additional uses of the libraries contained in this release of SANE. + + The exception is that, if you link a SANE library with other files + to produce an executable, this does not by itself cause the + resulting executable to be covered by the GNU General Public + License. Your use of that executable is in no way restricted on + account of linking the SANE library code into it. + + This exception does not, however, invalidate any other reasons why + the executable file might be covered by the GNU General Public + License. + + If you submit changes to SANE to the maintainers to be included in + a subsequent release, you agree by submitting the changes that + those changes may be distributed with this exception intact. + + If you write modifications of your own for SANE, it is your choice + whether to permit this exception to apply to your modifications. + If you do not wish that, delete this exception notice. +*/ + +/* + $Id$ + VM3552 (and maybe VM4552 and VM6552) +*/ + +/*--------------------------------------------------------------------------*/ + +#define BUILD 1 /* 2002/08/06 */ +#define BACKEND_NAME teco3 +#define TECO_CONFIG_FILE "teco3.conf" + +/*--------------------------------------------------------------------------*/ + +#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 <sys/wait.h> +#include <unistd.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_debug.h" +#include "../include/sane/sanei_backend.h" +#include "../include/sane/sanei_config.h" +#include "../include/lassert.h" + +#include "teco3.h" + +/*--------------------------------------------------------------------------*/ + +/* Lists of possible scan modes. */ +static SANE_String_Const scan_mode_list[] = { + BLACK_WHITE_STR, + GRAY_STR, + COLOR_STR, + NULL +}; + +/*--------------------------------------------------------------------------*/ + +/* Minimum and maximum width and length supported. */ +static SANE_Range x_range = { SANE_FIX (0), SANE_FIX (8.5 * MM_PER_INCH), 0 }; +static SANE_Range y_range = { SANE_FIX (0), SANE_FIX (14 * MM_PER_INCH), 0 }; + +/*--------------------------------------------------------------------------*/ + +/* Gamma range */ +static const SANE_Range gamma_range = { + 0, /* minimum */ + 255, /* maximum */ + 0 /* quantization */ +}; + +/*--------------------------------------------------------------------------*/ + +/* List of dithering options. */ +static SANE_String_Const dither_list[] = { + "Line art", + "2x2", + "3x3", + "4x4 bayer", + "4x4 smooth", + "8x8 bayer", + "8x8 smooth", + "8x8 horizontal", + "8x8 vertical", + NULL +}; +static const int dither_val[] = { + 0x00, + 0x01, + 0x02, + 0x03, + 0x04, + 0x05, + 0x06, + 0x07, + 0x08 +}; + +/*--------------------------------------------------------------------------*/ + +static const SANE_Range threshold_range = { + 0, /* minimum */ + 255, /* maximum */ + 0 /* quantization */ +}; + +/*--------------------------------------------------------------------------*/ + +/* Define the supported scanners and their characteristics. */ +static const struct scanners_supported scanners[] = { + { + 6, "TECO VM3552", + TECO_VM3552, + "Relisys", "Scorpio", + {1, 1200, 1}, /* resolution range */ + 300, 1200 /* max x and Y resolution */ + } +}; + +/*--------------------------------------------------------------------------*/ + +/* List of scanner attached. */ +static Teco_Scanner *first_dev = NULL; +static int num_devices = 0; +static const SANE_Device **devlist = NULL; + + +/* Local functions. */ + +/* Display a buffer in the log. */ +static void +hexdump (int level, const char *comment, unsigned char *p, int l) +{ + int i; + char line[128]; + char *ptr; + char asc_buf[17]; + char *asc_ptr; + + DBG (level, "%s\n", comment); + + ptr = line; + *ptr = '\0'; + asc_ptr = asc_buf; + *asc_ptr = '\0'; + + for (i = 0; i < l; i++, p++) + { + if ((i % 16) == 0) + { + if (ptr != line) + { + DBG (level, "%s %s\n", line, asc_buf); + ptr = line; + *ptr = '\0'; + asc_ptr = asc_buf; + *asc_ptr = '\0'; + } + sprintf (ptr, "%3.3d:", i); + ptr += 4; + } + ptr += sprintf (ptr, " %2.2x", *p); + if (*p >= 32 && *p <= 127) + { + asc_ptr += sprintf (asc_ptr, "%c", *p); + } + else + { + asc_ptr += sprintf (asc_ptr, "."); + } + } + *ptr = '\0'; + DBG (level, "%s %s\n", line, asc_buf); +} + +/* Returns the length of the longest string, including the terminating + * character. */ +static size_t +max_string_size (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; +} + +/* Lookup a string list from one array and return its index. */ +static int +get_string_list_index (SANE_String_Const list[], SANE_String_Const name) +{ + int index; + + index = 0; + while (list[index] != NULL) + { + if (strcmp (list[index], name) == 0) + { + return (index); + } + index++; + } + + DBG (DBG_error, "name %s not found in list\n", name); + + assert (0 == 1); /* bug in backend, core dump */ + + return (-1); +} + +/* Initialize a scanner entry. Return an allocated scanner with some + * preset values. */ +static Teco_Scanner * +teco_init (void) +{ + Teco_Scanner *dev; + + DBG (DBG_proc, "teco_init: enter\n"); + + /* Allocate a new scanner entry. */ + dev = malloc (sizeof (Teco_Scanner)); + if (dev == NULL) + { + return NULL; + } + + memset (dev, 0, sizeof (Teco_Scanner)); + + /* Allocate the buffer used to transfer the SCSI data. */ + dev->buffer_size = 64 * 1024; + dev->buffer = malloc (dev->buffer_size); + if (dev->buffer == NULL) + { + free (dev); + return NULL; + } + + dev->sfd = -1; + + DBG (DBG_proc, "teco_init: exit\n"); + + return (dev); +} + +/* Closes an open scanner. */ +static void +teco_close (Teco_Scanner * dev) +{ + DBG (DBG_proc, "teco_close: enter\n"); + + if (dev->sfd != -1) + { + sanei_scsi_close (dev->sfd); + dev->sfd = -1; + } + + DBG (DBG_proc, "teco_close: exit\n"); +} + +/* Frees the memory used by a scanner. */ +static void +teco_free (Teco_Scanner * dev) +{ + int i; + + DBG (DBG_proc, "teco_free: enter\n"); + + if (dev == NULL) + return; + + teco_close (dev); + if (dev->devicename) + { + free (dev->devicename); + } + if (dev->buffer) + { + free (dev->buffer); + } + if (dev->image) + { + free (dev->image); + } + for (i = 1; i < OPT_NUM_OPTIONS; i++) + { + if (dev->opt[i].type == SANE_TYPE_STRING && dev->val[i].s) + { + free (dev->val[i].s); + } + } + + free (dev); + + DBG (DBG_proc, "teco_free: exit\n"); +} + +/* Inquiry a device and returns TRUE if is supported. */ +static int +teco_identify_scanner (Teco_Scanner * dev) +{ + CDB cdb; + SANE_Status status; + size_t size; + int i; + + DBG (DBG_proc, "teco_identify_scanner: enter\n"); + + size = 5; + MKSCSI_INQUIRY (cdb, size); + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, + NULL, 0, dev->buffer, &size); + + if (status) + { + DBG (DBG_error, + "teco_identify_scanner: inquiry failed with status %s\n", + sane_strstatus (status)); + return (SANE_FALSE); + } + + size = dev->buffer[4] + 5; /* total length of the inquiry data */ + + if (size < 53) + { + DBG (DBG_error, + "teco_identify_scanner: not enough data to identify device\n"); + return (SANE_FALSE); + } + + MKSCSI_INQUIRY (cdb, size); + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, + NULL, 0, dev->buffer, &size); + + if (status) + { + DBG (DBG_error, + "teco_identify_scanner: inquiry failed with status %s\n", + sane_strstatus (status)); + return (SANE_FALSE); + } + + hexdump (DBG_info2, "inquiry", dev->buffer, size); + + dev->scsi_type = dev->buffer[0] & 0x1f; + memcpy (dev->scsi_vendor, dev->buffer + 0x08, 0x08); + dev->scsi_vendor[0x08] = 0; + memcpy (dev->scsi_product, dev->buffer + 0x10, 0x010); + dev->scsi_product[0x10] = 0; + memcpy (dev->scsi_version, dev->buffer + 0x20, 0x04); + dev->scsi_version[0x04] = 0; + memcpy (dev->scsi_teco_name, dev->buffer + 0x2A, 0x0B); + dev->scsi_teco_name[0x0B] = 0; + + DBG (DBG_info, "device is \"%s\" \"%s\" \"%s\" \"%s\"\n", + dev->scsi_vendor, dev->scsi_product, dev->scsi_version, + dev->scsi_teco_name); + + /* Lookup through the supported scanners table to find if this + * backend supports that one. */ + for (i = 0; i < NELEMS (scanners); i++) + { + + if (dev->scsi_type == scanners[i].scsi_type && + strcmp (dev->scsi_teco_name, scanners[i].scsi_teco_name) == 0) + { + + DBG (DBG_error, "teco_identify_scanner: scanner supported\n"); + + dev->def = &(scanners[i]); + + return (SANE_TRUE); + } + } + + DBG (DBG_proc, "teco_identify_scanner: exit, device not supported\n"); + + return (SANE_FALSE); +} + +/* SCSI sense handler. Callback for SANE. + * These scanners never set asc or ascq. */ +static SANE_Status +teco_sense_handler (int __sane_unused__ scsi_fd, unsigned char *result, void __sane_unused__ *arg) +{ + int sensekey; + int len; + + DBG (DBG_proc, "teco_sense_handler: enter\n"); + + sensekey = get_RS_sense_key (result); + len = 7 + get_RS_additional_length (result); + + hexdump (DBG_info2, "sense", result, len); + + if (get_RS_error_code (result) != 0x70) + { + DBG (DBG_error, + "teco_sense_handler: invalid sense key error code (%d)\n", + get_RS_error_code (result)); + + return SANE_STATUS_IO_ERROR; + } + + if (len < 14) + { + DBG (DBG_error, "teco_sense_handler: sense too short, no ASC/ASCQ\n"); + + return SANE_STATUS_IO_ERROR; + } + + DBG (DBG_sense, "teco_sense_handler: sense=%d\n", sensekey); + + if (sensekey == 0x00) + { + return SANE_STATUS_GOOD; + } + + return SANE_STATUS_IO_ERROR; +} + +/* Set a window. */ +static SANE_Status +teco_set_window (Teco_Scanner * dev) +{ + size_t window_size; + CDB cdb; + unsigned char window[255]; + SANE_Status status; + int i; + + DBG (DBG_proc, "teco_set_window: enter\n"); + + /* size of the whole windows block */ + switch (dev->def->tecoref) + { + case TECO_VM3552: + window_size = 69; + break; + default: + assert(0); + } + + + MKSCSI_SET_WINDOW (cdb, window_size); + + memset (window, 0, window_size); + + /* size of the windows descriptor block */ + window[7] = window_size - 8; + + /* X and Y resolution */ + Ito16 (dev->x_resolution, &window[10]); + Ito16 (dev->y_resolution, &window[12]); + + /* Upper Left (X,Y) */ + Ito32 (dev->x_tl, &window[14]); + Ito32 (dev->y_tl, &window[18]); + + /* Width and length */ + Ito32 (dev->width, &window[22]); + Ito32 (dev->length, &window[26]); + + /* Image Composition */ + switch (dev->scan_mode) + { + case TECO_BW: + window[31] = dev->val[OPT_THRESHOLD].w; + window[33] = 0x00; + i = get_string_list_index (dither_list, dev->val[OPT_DITHER].s); + window[36] = dither_val[i]; + break; + case TECO_GRAYSCALE: + window[31] = 0x80; + window[33] = 0x02; + break; + case TECO_COLOR: + window[31] = 0x80; + window[33] = 0x05; + break; + } + + /* Depth */ + window[34] = dev->depth; + + /* Unknown - invariants */ + window[37] = 0x80; + + switch (dev->def->tecoref) + { + case TECO_VM3552: + window[48] = 0x01; + window[50] = 0x02; + window[53] = 0xff; + window[57] = 0xff; + window[61] = 0xff; + window[65] = 0xff; + break; + } + + hexdump (DBG_info2, "windows", window, window_size); + + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, + window, window_size, NULL, NULL); + + DBG (DBG_proc, "teco_set_window: exit, status=%d\n", status); + + return status; +} + +/* Park the CCD */ +static SANE_Status +teco_reset_window (Teco_Scanner * dev) +{ + SANE_Status status; + CDB cdb; + + DBG (DBG_proc, "teco_reset_window: enter\n"); + + MKSCSI_OBJECT_POSITION (cdb, 0); + + hexdump (DBG_info2, "CDB:", cdb.data, cdb.len); + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, NULL, 0, NULL, NULL); + + DBG (DBG_proc, "teco_reset_window: leave, status=%d\n", status); + + return status; +} + +/* Return the number of byte that can be read. */ +static SANE_Status +get_filled_data_length (Teco_Scanner * dev, size_t * to_read) +{ + size_t size; + CDB cdb; + SANE_Status status; + + DBG (DBG_proc, "get_filled_data_length: enter\n"); + + *to_read = 0; + + size = 0x12; + MKSCSI_GET_DATA_BUFFER_STATUS (cdb, 1, size); + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, + NULL, 0, dev->buffer, &size); + + if (size < 0x10) + { + DBG (DBG_error, + "get_filled_data_length: not enough data returned (%ld)\n", + (long) size); + } + + hexdump (DBG_info2, "get_filled_data_length return", dev->buffer, size); + + *to_read = B24TOI (&dev->buffer[9]); + + DBG (DBG_info, "%d %d - %d %d\n", + dev->params.lines, B16TOI (&dev->buffer[12]), + dev->params.bytes_per_line, B16TOI (&dev->buffer[14])); + + if (dev->real_bytes_left == 0) + { + + DBG (DBG_error, + "get_filled_data_length: internal scanner buffer size is %d bytes\n", + B24TOI (&dev->buffer[6])); + + /* Beginning of a scan. */ + dev->params.lines = B16TOI (&dev->buffer[12]); + dev->bytes_per_raster = B16TOI (&dev->buffer[14]); + + switch (dev->scan_mode) + { + case TECO_BW: + dev->params.bytes_per_line = B16TOI (&dev->buffer[14]); + dev->params.pixels_per_line = dev->params.bytes_per_line * 8; + break; + + case TECO_GRAYSCALE: + dev->params.pixels_per_line = B16TOI (&dev->buffer[14]); + dev->params.bytes_per_line = dev->params.pixels_per_line; + break; + + case TECO_COLOR: + dev->params.pixels_per_line = B16TOI (&dev->buffer[14]); + dev->params.bytes_per_line = dev->params.pixels_per_line * 3; + if (dev->buffer[17] == 0x07) + { + /* There is no RAM extension present. The colors will + * be shifted and the backend will need to fix that. + */ + dev->does_color_shift = 1; + } + else + { + dev->does_color_shift = 0; + } + break; + } + } + + DBG (DBG_info, "get_filled_data_length: to read = %ld\n", (long) *to_read); + + DBG (DBG_proc, "get_filled_data_length: exit, status=%d\n", status); + + return (status); +} + +/* Start a scan. */ +static SANE_Status +teco_scan (Teco_Scanner * dev) +{ + CDB cdb; + SANE_Status status; + + DBG (DBG_proc, "teco_scan: enter\n"); + + MKSCSI_SCAN (cdb); + + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, NULL, 0, NULL, NULL); + + DBG (DBG_proc, "teco_scan: exit, status=%d\n", status); + + return status; +} + +/* Do some vendor specific stuff. */ +static SANE_Status +teco_vendor_spec (Teco_Scanner * dev) +{ + CDB cdb; + SANE_Status status; + size_t size; + + DBG (DBG_proc, "teco_vendor_spec: enter\n"); + + size = 0x7800; + + cdb.data[0] = 0x09; + cdb.data[1] = 0; + cdb.data[2] = 0; + cdb.data[3] = (size >> 8) & 0xff; + cdb.data[4] = (size >> 0) & 0xff; + cdb.data[5] = 0; + cdb.len = 6; + + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, + NULL, 0, dev->buffer, &size); + + /*hexdump (DBG_info2, "calibration:", dev->buffer, size); */ + + cdb.data[0] = 0x0E; + cdb.data[1] = 0; + cdb.data[2] = 0; + cdb.data[3] = 0; + cdb.data[4] = 0; + cdb.data[5] = 0; + cdb.len = 6; + + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, NULL, 0, NULL, NULL); + + return status; +} + +/* Send the gamma */ +static SANE_Status +teco_send_gamma (Teco_Scanner * dev) +{ + CDB cdb; + SANE_Status status; + struct + { + unsigned char gamma_R[GAMMA_LENGTH]; + unsigned char gamma_G[GAMMA_LENGTH]; /* also gray */ + unsigned char gamma_B[GAMMA_LENGTH]; + unsigned char gamma_unused[GAMMA_LENGTH]; + } + param; + size_t i; + size_t size; + + DBG (DBG_proc, "teco_send_gamma: enter\n"); + + size = sizeof (param); + assert (size == 4 * GAMMA_LENGTH); + MKSCSI_SEND_10 (cdb, 0x03, 0x02, size); + + if (dev->val[OPT_CUSTOM_GAMMA].w) + { + /* Use the custom gamma. */ + if (dev->scan_mode == TECO_GRAYSCALE) + { + /* Gray */ + for (i = 0; i < GAMMA_LENGTH; i++) + { + param.gamma_R[i] = 0; + param.gamma_G[i] = dev->gamma_GRAY[i]; + param.gamma_B[i] = 0; + param.gamma_unused[i] = 0; + } + } + else + { + /* Color */ + for (i = 0; i < GAMMA_LENGTH; i++) + { + param.gamma_R[i] = dev->gamma_R[i]; + param.gamma_G[i] = dev->gamma_G[i]; + param.gamma_B[i] = dev->gamma_B[i]; + param.gamma_unused[i] = 0; + } + } + } + else + { + for (i = 0; i < GAMMA_LENGTH; i++) + { + param.gamma_R[i] = i / 4; + param.gamma_G[i] = i / 4; + param.gamma_B[i] = i / 4; + param.gamma_unused[i] = 0; + } + } + + hexdump (DBG_info2, "teco_send_gamma:", cdb.data, cdb.len); + + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, + ¶m, size, NULL, NULL); + + DBG (DBG_proc, "teco_send_gamma: exit, status=%d\n", status); + + return (status); +} + +/* Attach a scanner to this backend. */ +static SANE_Status +attach_scanner (const char *devicename, Teco_Scanner ** devp) +{ + Teco_Scanner *dev; + SANE_Status status; + int sfd; + + DBG (DBG_sane_proc, "attach_scanner: %s\n", devicename); + + if (devp) + *devp = NULL; + + /* Check if we know this device name. */ + for (dev = first_dev; dev; dev = dev->next) + { + if (strcmp (dev->sane.name, devicename) == 0) + { + if (devp) + { + *devp = dev; + } + DBG (DBG_info, "device is already known\n"); + return SANE_STATUS_GOOD; + } + } + + /* Allocate a new scanner entry. */ + dev = teco_init (); + if (dev == NULL) + { + DBG (DBG_error, "ERROR: not enough memory\n"); + return SANE_STATUS_NO_MEM; + } + + DBG (DBG_info, "attach_scanner: opening %s\n", devicename); + + status = sanei_scsi_open (devicename, &sfd, teco_sense_handler, dev); + if (status != SANE_STATUS_GOOD) + { + DBG (DBG_error, "ERROR: attach_scanner: open failed (%s)\n", + sane_strstatus (status)); + teco_free (dev); + return SANE_STATUS_INVAL; + } + + /* Fill some scanner specific values. */ + dev->devicename = strdup (devicename); + dev->sfd = sfd; + + /* Now, check that it is a scanner we support. */ + if (teco_identify_scanner (dev) == SANE_FALSE) + { + DBG (DBG_error, + "ERROR: attach_scanner: scanner-identification failed\n"); + teco_free (dev); + return SANE_STATUS_INVAL; + } + + teco_close (dev); + + /* Set the default options for that scanner. */ + dev->sane.name = dev->devicename; + dev->sane.vendor = dev->def->real_vendor; + dev->sane.model = dev->def->real_product; + dev->sane.type = "flatbed scanner"; + + /* Link the scanner with the others. */ + dev->next = first_dev; + first_dev = dev; + + if (devp) + { + *devp = dev; + } + + num_devices++; + + DBG (DBG_proc, "attach_scanner: exit\n"); + + return SANE_STATUS_GOOD; +} + +static SANE_Status +attach_one (const char *dev) +{ + attach_scanner (dev, NULL); + return SANE_STATUS_GOOD; +} + +/* Reset the options for that scanner. */ +static void +teco_init_options (Teco_Scanner * dev) +{ + int i; + + /* Pre-initialize the options. */ + memset (dev->opt, 0, sizeof (dev->opt)); + memset (dev->val, 0, sizeof (dev->val)); + + for (i = 0; i < OPT_NUM_OPTIONS; ++i) + { + dev->opt[i].size = sizeof (SANE_Word); + dev->opt[i].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT; + } + + /* Number of options. */ + dev->opt[OPT_NUM_OPTS].name = ""; + dev->opt[OPT_NUM_OPTS].title = SANE_TITLE_NUM_OPTIONS; + dev->opt[OPT_NUM_OPTS].desc = SANE_DESC_NUM_OPTIONS; + dev->opt[OPT_NUM_OPTS].type = SANE_TYPE_INT; + dev->opt[OPT_NUM_OPTS].cap = SANE_CAP_SOFT_DETECT; + dev->val[OPT_NUM_OPTS].w = OPT_NUM_OPTIONS; + + /* Mode group */ + dev->opt[OPT_MODE_GROUP].title = SANE_TITLE_SCAN_MODE; + dev->opt[OPT_MODE_GROUP].desc = ""; /* not valid for a group */ + dev->opt[OPT_MODE_GROUP].type = SANE_TYPE_GROUP; + dev->opt[OPT_MODE_GROUP].cap = 0; + dev->opt[OPT_MODE_GROUP].size = 0; + dev->opt[OPT_MODE_GROUP].constraint_type = SANE_CONSTRAINT_NONE; + + /* Scanner supported modes */ + dev->opt[OPT_MODE].name = SANE_NAME_SCAN_MODE; + dev->opt[OPT_MODE].title = SANE_TITLE_SCAN_MODE; + dev->opt[OPT_MODE].desc = SANE_DESC_SCAN_MODE; + dev->opt[OPT_MODE].type = SANE_TYPE_STRING; + dev->opt[OPT_MODE].size = max_string_size (scan_mode_list); + dev->opt[OPT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST; + dev->opt[OPT_MODE].constraint.string_list = scan_mode_list; + dev->val[OPT_MODE].s = (SANE_Char *) strdup (""); /* will be set later */ + + /* X and Y resolution */ + dev->opt[OPT_RESOLUTION].name = SANE_NAME_SCAN_RESOLUTION; + dev->opt[OPT_RESOLUTION].title = SANE_TITLE_SCAN_RESOLUTION; + dev->opt[OPT_RESOLUTION].desc = SANE_DESC_SCAN_RESOLUTION; + dev->opt[OPT_RESOLUTION].type = SANE_TYPE_INT; + dev->opt[OPT_RESOLUTION].unit = SANE_UNIT_DPI; + dev->opt[OPT_RESOLUTION].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_RESOLUTION].constraint.range = &dev->def->res_range; + dev->val[OPT_RESOLUTION].w = 100; + + /* Geometry group */ + dev->opt[OPT_GEOMETRY_GROUP].title = SANE_I18N ("Geometry"); + dev->opt[OPT_GEOMETRY_GROUP].desc = ""; /* not valid for a group */ + dev->opt[OPT_GEOMETRY_GROUP].type = SANE_TYPE_GROUP; + dev->opt[OPT_GEOMETRY_GROUP].cap = 0; + dev->opt[OPT_GEOMETRY_GROUP].size = 0; + dev->opt[OPT_GEOMETRY_GROUP].constraint_type = SANE_CONSTRAINT_NONE; + + /* Upper left X */ + dev->opt[OPT_TL_X].name = SANE_NAME_SCAN_TL_X; + dev->opt[OPT_TL_X].title = SANE_TITLE_SCAN_TL_X; + dev->opt[OPT_TL_X].desc = SANE_DESC_SCAN_TL_X; + dev->opt[OPT_TL_X].type = SANE_TYPE_FIXED; + dev->opt[OPT_TL_X].unit = SANE_UNIT_MM; + dev->opt[OPT_TL_X].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_TL_X].constraint.range = &x_range; + dev->val[OPT_TL_X].w = x_range.min; + + /* Upper left Y */ + dev->opt[OPT_TL_Y].name = SANE_NAME_SCAN_TL_Y; + dev->opt[OPT_TL_Y].title = SANE_TITLE_SCAN_TL_Y; + dev->opt[OPT_TL_Y].desc = SANE_DESC_SCAN_TL_Y; + dev->opt[OPT_TL_Y].type = SANE_TYPE_FIXED; + dev->opt[OPT_TL_Y].unit = SANE_UNIT_MM; + dev->opt[OPT_TL_Y].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_TL_Y].constraint.range = &y_range; + dev->val[OPT_TL_Y].w = y_range.min; + + /* Bottom-right x */ + dev->opt[OPT_BR_X].name = SANE_NAME_SCAN_BR_X; + dev->opt[OPT_BR_X].title = SANE_TITLE_SCAN_BR_X; + dev->opt[OPT_BR_X].desc = SANE_DESC_SCAN_BR_X; + dev->opt[OPT_BR_X].type = SANE_TYPE_FIXED; + dev->opt[OPT_BR_X].unit = SANE_UNIT_MM; + dev->opt[OPT_BR_X].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_BR_X].constraint.range = &x_range; + dev->val[OPT_BR_X].w = x_range.max; + + /* Bottom-right y */ + dev->opt[OPT_BR_Y].name = SANE_NAME_SCAN_BR_Y; + dev->opt[OPT_BR_Y].title = SANE_TITLE_SCAN_BR_Y; + dev->opt[OPT_BR_Y].desc = SANE_DESC_SCAN_BR_Y; + dev->opt[OPT_BR_Y].type = SANE_TYPE_FIXED; + dev->opt[OPT_BR_Y].unit = SANE_UNIT_MM; + dev->opt[OPT_BR_Y].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_BR_Y].constraint.range = &y_range; + dev->val[OPT_BR_Y].w = y_range.max; + + /* Enhancement group */ + dev->opt[OPT_ENHANCEMENT_GROUP].title = SANE_I18N ("Enhancement"); + dev->opt[OPT_ENHANCEMENT_GROUP].desc = ""; /* not valid for a group */ + dev->opt[OPT_ENHANCEMENT_GROUP].type = SANE_TYPE_GROUP; + dev->opt[OPT_ENHANCEMENT_GROUP].cap = SANE_CAP_ADVANCED; + dev->opt[OPT_ENHANCEMENT_GROUP].size = 0; + dev->opt[OPT_ENHANCEMENT_GROUP].constraint_type = SANE_CONSTRAINT_NONE; + + /* Halftone pattern */ + dev->opt[OPT_DITHER].name = "dither"; + dev->opt[OPT_DITHER].title = SANE_I18N ("Dither"); + dev->opt[OPT_DITHER].desc = SANE_I18N ("Dither"); + dev->opt[OPT_DITHER].type = SANE_TYPE_STRING; + dev->opt[OPT_DITHER].size = max_string_size (dither_list); + dev->opt[OPT_DITHER].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_DITHER].constraint_type = SANE_CONSTRAINT_STRING_LIST; + dev->opt[OPT_DITHER].constraint.string_list = dither_list; + dev->val[OPT_DITHER].s = strdup (dither_list[0]); + + /* custom-gamma table */ + dev->opt[OPT_CUSTOM_GAMMA].name = SANE_NAME_CUSTOM_GAMMA; + dev->opt[OPT_CUSTOM_GAMMA].title = SANE_TITLE_CUSTOM_GAMMA; + dev->opt[OPT_CUSTOM_GAMMA].desc = SANE_DESC_CUSTOM_GAMMA; + dev->opt[OPT_CUSTOM_GAMMA].type = SANE_TYPE_BOOL; + dev->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE; + dev->val[OPT_CUSTOM_GAMMA].w = SANE_FALSE; + + /* red gamma vector */ + dev->opt[OPT_GAMMA_VECTOR_R].name = SANE_NAME_GAMMA_VECTOR_R; + dev->opt[OPT_GAMMA_VECTOR_R].title = SANE_TITLE_GAMMA_VECTOR_R; + dev->opt[OPT_GAMMA_VECTOR_R].desc = SANE_DESC_GAMMA_VECTOR_R; + dev->opt[OPT_GAMMA_VECTOR_R].type = SANE_TYPE_INT; + dev->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_R].unit = SANE_UNIT_NONE; + dev->opt[OPT_GAMMA_VECTOR_R].size = GAMMA_LENGTH * sizeof (SANE_Word); + dev->opt[OPT_GAMMA_VECTOR_R].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_GAMMA_VECTOR_R].constraint.range = &gamma_range; + dev->val[OPT_GAMMA_VECTOR_R].wa = dev->gamma_R; + + /* green and gamma vector */ + dev->opt[OPT_GAMMA_VECTOR_G].name = SANE_NAME_GAMMA_VECTOR_G; + dev->opt[OPT_GAMMA_VECTOR_G].title = SANE_TITLE_GAMMA_VECTOR_G; + dev->opt[OPT_GAMMA_VECTOR_G].desc = SANE_DESC_GAMMA_VECTOR_G; + dev->opt[OPT_GAMMA_VECTOR_G].type = SANE_TYPE_INT; + dev->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_G].unit = SANE_UNIT_NONE; + dev->opt[OPT_GAMMA_VECTOR_G].size = GAMMA_LENGTH * sizeof (SANE_Word); + dev->opt[OPT_GAMMA_VECTOR_G].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_GAMMA_VECTOR_G].constraint.range = &gamma_range; + dev->val[OPT_GAMMA_VECTOR_G].wa = dev->gamma_G; + + /* blue gamma vector */ + dev->opt[OPT_GAMMA_VECTOR_B].name = SANE_NAME_GAMMA_VECTOR_B; + dev->opt[OPT_GAMMA_VECTOR_B].title = SANE_TITLE_GAMMA_VECTOR_B; + dev->opt[OPT_GAMMA_VECTOR_B].desc = SANE_DESC_GAMMA_VECTOR_B; + dev->opt[OPT_GAMMA_VECTOR_B].type = SANE_TYPE_INT; + dev->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_B].unit = SANE_UNIT_NONE; + dev->opt[OPT_GAMMA_VECTOR_B].size = GAMMA_LENGTH * sizeof (SANE_Word); + dev->opt[OPT_GAMMA_VECTOR_B].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_GAMMA_VECTOR_B].constraint.range = &gamma_range; + dev->val[OPT_GAMMA_VECTOR_B].wa = dev->gamma_B; + + /* grayscale gamma vector */ + dev->opt[OPT_GAMMA_VECTOR_GRAY].name = SANE_NAME_GAMMA_VECTOR; + dev->opt[OPT_GAMMA_VECTOR_GRAY].title = SANE_TITLE_GAMMA_VECTOR; + dev->opt[OPT_GAMMA_VECTOR_GRAY].desc = SANE_DESC_GAMMA_VECTOR; + dev->opt[OPT_GAMMA_VECTOR_GRAY].type = SANE_TYPE_INT; + dev->opt[OPT_GAMMA_VECTOR_GRAY].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_GRAY].unit = SANE_UNIT_NONE; + dev->opt[OPT_GAMMA_VECTOR_GRAY].size = GAMMA_LENGTH * sizeof (SANE_Word); + dev->opt[OPT_GAMMA_VECTOR_GRAY].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_GAMMA_VECTOR_GRAY].constraint.range = &gamma_range; + dev->val[OPT_GAMMA_VECTOR_GRAY].wa = dev->gamma_GRAY; + + /* Threshold */ + dev->opt[OPT_THRESHOLD].name = SANE_NAME_THRESHOLD; + dev->opt[OPT_THRESHOLD].title = SANE_TITLE_THRESHOLD; + dev->opt[OPT_THRESHOLD].desc = SANE_DESC_THRESHOLD; + dev->opt[OPT_THRESHOLD].type = SANE_TYPE_INT; + dev->opt[OPT_THRESHOLD].unit = SANE_UNIT_NONE; + dev->opt[OPT_THRESHOLD].size = sizeof (SANE_Int); + dev->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_THRESHOLD].constraint_type = SANE_CONSTRAINT_RANGE; + dev->opt[OPT_THRESHOLD].constraint.range = &threshold_range; + dev->val[OPT_THRESHOLD].w = 128; + + /* preview */ + dev->opt[OPT_PREVIEW].name = SANE_NAME_PREVIEW; + dev->opt[OPT_PREVIEW].title = SANE_TITLE_PREVIEW; + dev->opt[OPT_PREVIEW].desc = SANE_DESC_PREVIEW; + dev->opt[OPT_PREVIEW].type = SANE_TYPE_BOOL; + dev->opt[OPT_PREVIEW].cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT; + dev->val[OPT_PREVIEW].w = SANE_FALSE; + + /* Lastly, set the default scan mode. This might change some + * values previously set here. */ + sane_control_option (dev, OPT_MODE, SANE_ACTION_SET_VALUE, + (SANE_String_Const *) scan_mode_list[0], NULL); +} + +/* + * Wait until the scanner is ready. + */ +static SANE_Status +teco_wait_scanner (Teco_Scanner * dev) +{ + SANE_Status status; + int timeout; + CDB cdb; + + DBG (DBG_proc, "teco_wait_scanner: enter\n"); + + MKSCSI_TEST_UNIT_READY (cdb); + + /* Set the timeout to 60 seconds. */ + timeout = 60; + + while (timeout > 0) + { + + /* test unit ready */ + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, + NULL, 0, NULL, NULL); + + if (status == SANE_STATUS_GOOD) + { + return SANE_STATUS_GOOD; + } + + sleep (1); + }; + + DBG (DBG_proc, "teco_wait_scanner: scanner not ready\n"); + return (SANE_STATUS_IO_ERROR); +} + +/* + * Get the sense + */ +static SANE_Status +teco_query_sense (Teco_Scanner * dev) +{ + SANE_Status status; + unsigned char buf[255]; + CDB cdb; + size_t size; + + DBG (DBG_proc, "teco_wait_scanner: enter\n"); + + size = sizeof (buf); + MKSCSI_REQUEST_SENSE (cdb, size); + + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, NULL, 0, buf, &size); + + hexdump (DBG_info2, "sense", buf, size); + + DBG (DBG_error, "teco_query_sense: return (%s)\n", sane_strstatus (status)); + return (status); +} + +/* + * Adjust the rasters. This function is used during a color scan, + * because the scanner does not present a format sane can interpret + * directly. + * + * The scanner sends the colors by rasters (B then G then R), whereas + * sane is waiting for a group of 3 bytes per color. To make things + * funnier, the rasters are shifted. The format of those raster is: + * BGR...BGR + * + * For a proper scan, the first 2 R and 1 G, and the last 1 G and 2 B + * must be ignored. (TODO) + * + * So this function reorders all that mess. It gets the input from + * dev->buffer and write the output in dev->image. size_in the the + * length of the valid data in dev->buffer. */ + +/* 0=red, 1=green, 2=blue */ + +#define COLOR_0 2 +#define COLOR_1 1 +#define COLOR_2 0 +#define line_shift ( - dev->color_shift) + +static void +teco_adjust_raster (Teco_Scanner * dev, size_t size_in) +{ + int nb_rasters; /* number of rasters in dev->buffer */ + + int raster; /* current raster number in buffer */ + int line; /* line number for that raster */ + int color = -1; /* color for that raster */ + size_t offset; + + DBG (DBG_proc, "teco_adjust_raster: enter\n"); + + assert (dev->scan_mode == TECO_COLOR); + assert ((size_in % dev->bytes_per_raster) == 0); + + if (size_in == 0) + { + return; + } + + /* + * The color coding is one line for each color (in the RGB order). + * Recombine that stuff to create a RGB value for each pixel. + */ + + nb_rasters = size_in / dev->raster_size; + + for (raster = 0; raster < nb_rasters; raster++) + { + + /* + * Find the color to which this raster belongs to. + */ + line = 0; + if (dev->raster_num < dev->color_shift) + { + color = COLOR_0; + line = dev->raster_num; + } + else if (dev->raster_num < (3 * dev->color_shift)) + { + + if ((dev->raster_num - line_shift) % 2) + { + color = COLOR_1; + line = (dev->raster_num + line_shift) / 2; + } + else + { + color = COLOR_0; + line = (dev->raster_num - line_shift) / 2; + } + } + else if (dev->raster_num >= dev->raster_real - dev->color_shift) + { + color = COLOR_2; + line = dev->line; + } + else if (dev->raster_num >= dev->raster_real - 3 * dev->color_shift) + { + if ((dev->raster_real - dev->raster_num - line_shift) % 2) + { + color = COLOR_2; + line = dev->line; + } + else + { + color = COLOR_1; + line = dev->line - line_shift; + } + } + else + { + switch ((dev->raster_num - 3 * line_shift) % 3) + { + case 0: + color = COLOR_0; + line = (dev->raster_num - 3 * line_shift) / 3; + break; + case 1: + color = COLOR_1; + line = dev->raster_num / 3; + break; + case 2: + color = COLOR_2; + line = (dev->raster_num + 3 * line_shift) / 3; + break; + } + } + + /* Adjust the line number relative to the image. */ + line -= dev->line; + + offset = dev->image_end + line * dev->params.bytes_per_line; + + assert (offset <= (dev->image_size - dev->params.bytes_per_line)); + + /* Copy the raster to the temporary image. */ + { + int i; + unsigned char *src = dev->buffer + raster * dev->raster_size; + unsigned char *dest = dev->image + offset + color; + + for (i = 0; i < dev->raster_size; i++) + { + *dest = *src; + src++; + dest += 3; + } + + assert (dest <= (dev->image + dev->image_size + 2)); + + } + + DBG (DBG_info, "raster=%d, line=%d, color=%d\n", dev->raster_num, + dev->line + line, color); + + if (color == COLOR_2) + { + /* This raster completes a new line */ + dev->line++; + dev->image_end += dev->params.bytes_per_line; + } + + dev->raster_num++; + } + + DBG (DBG_proc, "teco_adjust_raster: exit\n"); +} + +/* Read the image from the scanner and fill the temporary buffer with it. */ +static SANE_Status +teco_fill_image (Teco_Scanner * dev) +{ + SANE_Status status; + size_t size; + CDB cdb; + unsigned char *image; + + DBG (DBG_proc, "teco_fill_image: enter\n"); + + assert (dev->image_begin == dev->image_end); + assert (dev->real_bytes_left > 0); + + /* Copy the complete lines, plus the incompletes + * ones. We don't keep the real end of data used + * in image, so we copy the biggest possible. + */ + if (dev->scan_mode == TECO_COLOR) + { + memmove (dev->image, dev->image + dev->image_begin, dev->raster_ahead); + } + + dev->image_begin = 0; + dev->image_end = 0; + + while (dev->real_bytes_left) + { + + /* todo: teco2 too */ + /* Check that we can at least one line. */ + if (dev->raster_ahead + dev->image_end + dev->params.bytes_per_line > + dev->image_size) + { + /* Probably reached the end of the buffer. + * Check, just in case. */ + assert (dev->image_end != 0); + return (SANE_STATUS_GOOD); + } + + /* + * Try to read the maximum number of bytes. + */ + size = 0; + while (size == 0) + { + status = get_filled_data_length (dev, &size); + if (status) + return (status); + if (size == 0) + usleep (100000); /* sleep 1/10th of second */ + } + + if (size > dev->real_bytes_left) + size = dev->real_bytes_left; + if (size > dev->image_size - dev->raster_ahead - dev->image_end) + size = dev->image_size - dev->raster_ahead - dev->image_end; + if (size > dev->buffer_size) + { + size = dev->buffer_size; + } + + /* Always read a multiple of a raster. */ + size = size - (size % dev->bytes_per_raster); + + if (size == 0) + { + /* Probably reached the end of the buffer. + * Check, just in case. */ + assert (dev->image_end != 0); + return (SANE_STATUS_GOOD); + } + + DBG (DBG_info, "teco_fill_image: to read = %ld bytes (bpl=%d)\n", + (long) size, dev->params.bytes_per_line); + + MKSCSI_READ_10 (cdb, 0, 0, size); + + hexdump (DBG_info2, "teco_fill_image: READ_10 CDB", cdb.data, 10); + DBG (DBG_info, " image_end=%lu\n", (u_long) dev->image_end); + + if (dev->scan_mode == TECO_COLOR && dev->does_color_shift) + { + image = dev->buffer; + } + else + { + image = dev->image + dev->image_end; + } + + status = sanei_scsi_cmd2 (dev->sfd, cdb.data, cdb.len, + NULL, 0, image, &size); + + if (status != SANE_STATUS_GOOD) + { + DBG (DBG_error, "teco_fill_image: cannot read from the scanner\n"); + return status; + } + + /* The size this scanner returns is always a multiple of a + * raster size. */ + assert ((size % dev->bytes_per_raster) == 0); + + DBG (DBG_info, "teco_fill_image: real bytes left = %ld\n", + (long) dev->real_bytes_left); + + if (dev->scan_mode == TECO_COLOR && dev->does_color_shift) + { + teco_adjust_raster (dev, size); + } + else + { + /* Already in dev->image. */ + dev->image_end += size; + } + + dev->real_bytes_left -= size; + } + + return (SANE_STATUS_GOOD); /* unreachable */ +} + +/* Copy from the raw buffer to the buffer given by the backend. + * + * len in input is the maximum length available in buf, and, in + * output, is the length written into buf. + */ +static void +teco_copy_raw_to_frontend (Teco_Scanner * dev, SANE_Byte * buf, size_t * len) +{ + size_t size; + + size = dev->image_end - dev->image_begin; + if (size > *len) + { + size = *len; + } + *len = size; + + switch (dev->scan_mode) + { + case TECO_BW: + { + /* For Black & White, the bits in every bytes are mirrored. + * for instance 11010001 is coded as 10001011 */ + + unsigned char *src = dev->image + dev->image_begin; + size_t i; + unsigned char s; + unsigned char d; + + for (i = 0; i < size; i++) + { + s = *src ^ 0xff; + d = 0; + if (s & 0x01) + d |= 0x80; + if (s & 0x02) + d |= 0x40; + if (s & 0x04) + d |= 0x20; + if (s & 0x08) + d |= 0x10; + if (s & 0x10) + d |= 0x08; + if (s & 0x20) + d |= 0x04; + if (s & 0x40) + d |= 0x02; + if (s & 0x80) + d |= 0x01; + *buf = d; + src++; + buf++; + } + } + break; + + case TECO_GRAYSCALE: + case TECO_COLOR: + memcpy (buf, dev->image + dev->image_begin, size); + break; + } + + dev->image_begin += size; +} + +/* Stop a scan. */ +static SANE_Status +do_cancel (Teco_Scanner * dev) +{ + DBG (DBG_sane_proc, "do_cancel enter\n"); + + if (dev->scanning == SANE_TRUE) + { + teco_reset_window (dev); + teco_close (dev); + } + + dev->scanning = SANE_FALSE; + + DBG (DBG_sane_proc, "do_cancel exit\n"); + + return SANE_STATUS_CANCELLED; +} + +/*--------------------------------------------------------------------------*/ + +/* Sane entry points */ + +SANE_Status +sane_init (SANE_Int * version_code, SANE_Auth_Callback __sane_unused__ authorize) +{ + FILE *fp; + char dev_name[PATH_MAX]; + size_t len; + + DBG_INIT (); + + DBG (DBG_sane_init, "sane_init\n"); + + DBG (DBG_error, "This is sane-teco3 version %d.%d-%d\n", SANE_CURRENT_MAJOR, + V_MINOR, BUILD); + DBG (DBG_error, "(C) 2002 by Frank Zago\n"); + + if (version_code) + { + *version_code = SANE_VERSION_CODE (SANE_CURRENT_MAJOR, V_MINOR, BUILD); + } + + fp = sanei_config_open (TECO_CONFIG_FILE); + if (!fp) + { + /* default to /dev/scanner instead of insisting on config file */ + attach_scanner ("/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); + + DBG (DBG_proc, "sane_init: leave\n"); + + return SANE_STATUS_GOOD; +} + +SANE_Status +sane_get_devices (const SANE_Device *** device_list, SANE_Bool __sane_unused__ local_only) +{ + Teco_Scanner *dev; + int i; + + DBG (DBG_proc, "sane_get_devices: enter\n"); + + 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; + + DBG (DBG_proc, "sane_get_devices: exit\n"); + + return SANE_STATUS_GOOD; +} + +SANE_Status +sane_open (SANE_String_Const devicename, SANE_Handle * handle) +{ + Teco_Scanner *dev; + SANE_Status status; + int i; + + DBG (DBG_proc, "sane_open: enter\n"); + + /* search for devicename */ + if (devicename[0]) + { + DBG (DBG_info, "sane_open: devicename=%s\n", devicename); + + for (dev = first_dev; dev; dev = dev->next) + { + if (strcmp (dev->sane.name, devicename) == 0) + { + break; + } + } + + if (!dev) + { + status = attach_scanner (devicename, &dev); + if (status != SANE_STATUS_GOOD) + { + return status; + } + } + } + else + { + DBG (DBG_sane_info, "sane_open: no devicename, opening first device\n"); + dev = first_dev; /* empty devicename -> use first device */ + } + + if (!dev) + { + DBG (DBG_error, "No scanner found\n"); + + return SANE_STATUS_INVAL; + } + + teco_init_options (dev); + + /* Initialize the gamma table. */ + for (i = 0; i < GAMMA_LENGTH; i++) + { + dev->gamma_R[i] = i / 4; + dev->gamma_G[i] = i / 4; + dev->gamma_B[i] = i / 4; + dev->gamma_GRAY[i] = i / 4; + } + + *handle = dev; + + DBG (DBG_proc, "sane_open: exit\n"); + + return SANE_STATUS_GOOD; +} + +const SANE_Option_Descriptor * +sane_get_option_descriptor (SANE_Handle handle, SANE_Int option) +{ + Teco_Scanner *dev = handle; + + DBG (DBG_proc, "sane_get_option_descriptor: enter, option %d\n", option); + + if ((unsigned) option >= OPT_NUM_OPTIONS) + { + return NULL; + } + + DBG (DBG_proc, "sane_get_option_descriptor: exit\n"); + + return dev->opt + option; +} + +SANE_Status +sane_control_option (SANE_Handle handle, SANE_Int option, + SANE_Action action, void *val, SANE_Int * info) +{ + Teco_Scanner *dev = handle; + SANE_Status status; + SANE_Word cap; + SANE_String_Const name; + + DBG (DBG_proc, "sane_control_option: enter, option %d, action %d\n", + option, action); + + if (info) + { + *info = 0; + } + + if (dev->scanning) + { + return SANE_STATUS_DEVICE_BUSY; + } + + if (option < 0 || option >= OPT_NUM_OPTIONS) + { + return SANE_STATUS_INVAL; + } + + cap = dev->opt[option].cap; + if (!SANE_OPTION_IS_ACTIVE (cap)) + { + return SANE_STATUS_INVAL; + } + + name = dev->opt[option].name; + if (!name) + { + name = "(no name)"; + } + if (action == SANE_ACTION_GET_VALUE) + { + + switch (option) + { + /* word options */ + case OPT_NUM_OPTS: + case OPT_RESOLUTION: + case OPT_TL_Y: + case OPT_BR_Y: + case OPT_TL_X: + case OPT_BR_X: + case OPT_CUSTOM_GAMMA: + case OPT_THRESHOLD: + case OPT_PREVIEW: + *(SANE_Word *) val = dev->val[option].w; + return SANE_STATUS_GOOD; + + /* string options */ + case OPT_MODE: + case OPT_DITHER: + strcpy (val, dev->val[option].s); + return SANE_STATUS_GOOD; + + /* Gamma */ + case OPT_GAMMA_VECTOR_R: + case OPT_GAMMA_VECTOR_G: + case OPT_GAMMA_VECTOR_B: + case OPT_GAMMA_VECTOR_GRAY: + memcpy (val, dev->val[option].wa, dev->opt[option].size); + return SANE_STATUS_GOOD; + + default: + return SANE_STATUS_INVAL; + } + } + else if (action == SANE_ACTION_SET_VALUE) + { + + if (!SANE_OPTION_IS_SETTABLE (cap)) + { + DBG (DBG_error, "could not set option, not settable\n"); + return SANE_STATUS_INVAL; + } + + status = sanei_constrain_value (dev->opt + option, val, info); + if (status != SANE_STATUS_GOOD) + { + DBG (DBG_error, "could not set option, invalid value\n"); + return status; + } + + switch (option) + { + + /* Numeric side-effect options */ + case OPT_TL_Y: + case OPT_BR_Y: + case OPT_TL_X: + case OPT_BR_X: + case OPT_THRESHOLD: + case OPT_RESOLUTION: + if (info) + { + *info |= SANE_INFO_RELOAD_PARAMS; + } + dev->val[option].w = *(SANE_Word *) val; + return SANE_STATUS_GOOD; + + /* Numeric side-effect free options */ + case OPT_PREVIEW: + dev->val[option].w = *(SANE_Word *) val; + return SANE_STATUS_GOOD; + + /* String side-effect free options */ + case OPT_DITHER: + free (dev->val[option].s); + dev->val[option].s = (SANE_String) strdup (val); + return SANE_STATUS_GOOD; + + /* String side-effect options */ + case OPT_MODE: + if (strcmp (dev->val[option].s, val) == 0) + return SANE_STATUS_GOOD; + + free (dev->val[OPT_MODE].s); + dev->val[OPT_MODE].s = (SANE_Char *) strdup (val); + + dev->opt[OPT_DITHER].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_GRAY].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_THRESHOLD].cap |= SANE_CAP_INACTIVE; + + if (strcmp (dev->val[OPT_MODE].s, BLACK_WHITE_STR) == 0) + { + dev->depth = 8; + dev->scan_mode = TECO_BW; + dev->opt[OPT_DITHER].cap &= ~SANE_CAP_INACTIVE; + dev->opt[OPT_THRESHOLD].cap &= ~SANE_CAP_INACTIVE; + } + else if (strcmp (dev->val[OPT_MODE].s, GRAY_STR) == 0) + { + dev->scan_mode = TECO_GRAYSCALE; + dev->opt[OPT_CUSTOM_GAMMA].cap &= ~SANE_CAP_INACTIVE; + if (dev->val[OPT_CUSTOM_GAMMA].w) + { + dev->opt[OPT_GAMMA_VECTOR_GRAY].cap &= ~SANE_CAP_INACTIVE; + } + dev->depth = 8; + } + else if (strcmp (dev->val[OPT_MODE].s, COLOR_STR) == 0) + { + dev->scan_mode = TECO_COLOR; + dev->opt[OPT_CUSTOM_GAMMA].cap &= ~SANE_CAP_INACTIVE; + if (dev->val[OPT_CUSTOM_GAMMA].w) + { + dev->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE; + } + dev->depth = 8; + } + + if (info) + { + *info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS; + } + return SANE_STATUS_GOOD; + + case OPT_GAMMA_VECTOR_R: + case OPT_GAMMA_VECTOR_G: + case OPT_GAMMA_VECTOR_B: + case OPT_GAMMA_VECTOR_GRAY: + memcpy (dev->val[option].wa, val, dev->opt[option].size); + return SANE_STATUS_GOOD; + + case OPT_CUSTOM_GAMMA: + dev->val[OPT_CUSTOM_GAMMA].w = *(SANE_Word *) val; + if (dev->val[OPT_CUSTOM_GAMMA].w) + { + /* use custom_gamma_table */ + if (dev->scan_mode == TECO_GRAYSCALE) + { + dev->opt[OPT_GAMMA_VECTOR_GRAY].cap &= ~SANE_CAP_INACTIVE; + } + else + { + /* color mode */ + dev->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE; + } + } + else + { + dev->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE; + dev->opt[OPT_GAMMA_VECTOR_GRAY].cap |= SANE_CAP_INACTIVE; + } + if (info) + { + *info |= SANE_INFO_RELOAD_OPTIONS; + } + return SANE_STATUS_GOOD; + + default: + return SANE_STATUS_INVAL; + } + } + + DBG (DBG_proc, "sane_control_option: exit, bad\n"); + + return SANE_STATUS_UNSUPPORTED; +} + +SANE_Status +sane_get_parameters (SANE_Handle handle, SANE_Parameters * params) +{ + Teco_Scanner *dev = handle; + + DBG (DBG_proc, "sane_get_parameters: enter\n"); + + if (!(dev->scanning)) + { + + /* Setup the parameters for the scan. These values will be re-used + * in the SET WINDOWS command. */ + if (dev->val[OPT_PREVIEW].w == SANE_TRUE) + { + dev->x_resolution = 50; + dev->y_resolution = 50; + dev->x_tl = 0; + dev->y_tl = 0; + dev->x_br = mmToIlu (SANE_UNFIX (x_range.max)); + dev->y_br = mmToIlu (SANE_UNFIX (y_range.max)); + } + else + { + dev->x_resolution = dev->val[OPT_RESOLUTION].w; + dev->y_resolution = dev->val[OPT_RESOLUTION].w; + if (dev->x_resolution > dev->def->x_resolution_max) + { + dev->x_resolution = dev->def->x_resolution_max; + } + + dev->x_tl = mmToIlu (SANE_UNFIX (dev->val[OPT_TL_X].w)); + dev->y_tl = mmToIlu (SANE_UNFIX (dev->val[OPT_TL_Y].w)); + dev->x_br = mmToIlu (SANE_UNFIX (dev->val[OPT_BR_X].w)); + dev->y_br = mmToIlu (SANE_UNFIX (dev->val[OPT_BR_Y].w)); + } + + /* Check the corners are OK. */ + if (dev->x_tl > dev->x_br) + { + int s; + s = dev->x_tl; + dev->x_tl = dev->x_br; + dev->x_br = s; + } + if (dev->y_tl > dev->y_br) + { + int s; + s = dev->y_tl; + dev->y_tl = dev->y_br; + dev->y_br = s; + } + + dev->width = dev->x_br - dev->x_tl; + dev->length = dev->y_br - dev->y_tl; + + /* Prepare the parameters for the caller. */ + memset (&dev->params, 0, sizeof (SANE_Parameters)); + + dev->params.last_frame = SANE_TRUE; + + switch (dev->scan_mode) + { + case TECO_BW: + dev->params.format = SANE_FRAME_GRAY; + dev->params.pixels_per_line = + ((dev->width * dev->x_resolution) / 300) & ~0x7; + dev->params.bytes_per_line = dev->params.pixels_per_line / 8; + dev->params.depth = 1; + dev->color_shift = 0; + break; + case TECO_GRAYSCALE: + dev->params.format = SANE_FRAME_GRAY; + dev->params.pixels_per_line = + ((dev->width * dev->x_resolution) / 300); + dev->params.bytes_per_line = dev->params.pixels_per_line; + dev->params.depth = 8; + dev->color_shift = 0; + break; + case TECO_COLOR: + dev->params.format = SANE_FRAME_RGB; + dev->params.pixels_per_line = + ((dev->width * dev->x_resolution) / 300); + dev->params.bytes_per_line = dev->params.pixels_per_line * 3; + dev->params.depth = 8; + + /* If the scanner does not have enough memory, it will + * send the raw rasters instead of returning a full + * interleaved line. Unfortunatly this does not work well, + * because I don't know how to compute the color + * shifting. So here is the result of some trial and error + * process. This is ignored if the scanner has a RAM + * module. + */ + dev->color_shift = dev->x_resolution / 75; + + break; + } + + dev->params.lines = (dev->length * dev->y_resolution) / 300; + } + + /* Return the current values. */ + if (params) + { + *params = (dev->params); + } + + DBG (DBG_proc, "sane_get_parameters: exit\n"); + + return SANE_STATUS_GOOD; +} + +SANE_Status +sane_start (SANE_Handle handle) +{ + Teco_Scanner *dev = handle; + SANE_Status status; + size_t size; + + DBG (DBG_proc, "sane_start: enter\n"); + + if (!(dev->scanning)) + { + + /* Open again the scanner. */ + if (sanei_scsi_open + (dev->devicename, &(dev->sfd), teco_sense_handler, dev) != 0) + { + DBG (DBG_error, "ERROR: sane_start: open failed\n"); + return SANE_STATUS_INVAL; + } + + /* Set the correct parameters. */ + sane_get_parameters (dev, NULL); + + /* The scanner must be ready. */ + status = teco_wait_scanner (dev); + if (status) + { + teco_close (dev); + return status; + } + + teco_query_sense (dev); + teco_reset_window (dev); + + status = teco_set_window (dev); + if (status) + { + teco_close (dev); + return status; + } + + dev->real_bytes_left = 0; + status = get_filled_data_length (dev, &size); + if (status) + { + teco_close (dev); + return status; + } + + /* Compute the length necessary in image. The first part will store + * the complete lines, and the rest is used to stored ahead + * rasters. + * Align image_size to a multiple of lines. (important) + */ + dev->raster_ahead = + (2 * dev->color_shift + 1) * dev->params.bytes_per_line; + dev->image_size = dev->buffer_size + dev->raster_ahead; + dev->image_size = + dev->image_size - (dev->image_size % dev->params.bytes_per_line); + dev->image = malloc (dev->image_size); + if (dev->image == NULL) + { + return SANE_STATUS_NO_MEM; + } + + /* Rasters are meaningfull only in color mode. */ + dev->raster_size = dev->params.pixels_per_line; + dev->raster_real = dev->params.lines * 3; + dev->raster_num = 0; + dev->line = 0; + + teco_vendor_spec (dev); + if (status) + { + teco_close (dev); + return status; + } + + status = teco_send_gamma (dev); + if (status) + { + teco_close (dev); + return status; + } + + status = teco_set_window (dev); + if (status) + { + teco_close (dev); + return status; + } + + status = teco_scan (dev); + if (status) + { + teco_close (dev); + return status; + } + } + + dev->image_end = 0; + dev->image_begin = 0; + + dev->bytes_left = dev->params.bytes_per_line * dev->params.lines; + dev->real_bytes_left = dev->params.bytes_per_line * dev->params.lines; + + dev->scanning = SANE_TRUE; + + DBG (DBG_proc, "sane_start: exit\n"); + + return SANE_STATUS_GOOD; +} + +SANE_Status +sane_read (SANE_Handle handle, SANE_Byte * buf, SANE_Int max_len, + SANE_Int * len) +{ + SANE_Status status; + Teco_Scanner *dev = handle; + size_t size; + int buf_offset; /* offset into buf */ + + DBG (DBG_proc, "sane_read: enter\n"); + + *len = 0; + + if (!(dev->scanning)) + { + /* OOPS, not scanning */ + return do_cancel (dev); + } + + if (dev->bytes_left <= 0) + { + return (SANE_STATUS_EOF); + } + + buf_offset = 0; + + do + { + if (dev->image_begin == dev->image_end) + { + /* Fill image */ + status = teco_fill_image (dev); + if (status != SANE_STATUS_GOOD) + { + return (status); + } + } + + /* Something must have been read */ + if (dev->image_begin == dev->image_end) + { + DBG (DBG_info, "sane_read: nothing read\n"); + return SANE_STATUS_IO_ERROR; + } + + /* Copy the data to the frontend buffer. */ + size = max_len - buf_offset; + if (size > dev->bytes_left) + { + size = dev->bytes_left; + } + teco_copy_raw_to_frontend (dev, buf + buf_offset, &size); + + buf_offset += size; + + dev->bytes_left -= size; + *len += size; + + } + while ((buf_offset != max_len) && dev->bytes_left); + + DBG (DBG_info, "sane_read: leave, bytes_left=%ld\n", + (long) dev->bytes_left); + + return SANE_STATUS_GOOD; +} + +SANE_Status +sane_set_io_mode (SANE_Handle __sane_unused__ handle, SANE_Bool __sane_unused__ non_blocking) +{ + SANE_Status status; + Teco_Scanner *dev = handle; + + DBG (DBG_proc, "sane_set_io_mode: enter\n"); + + if (dev->scanning == SANE_FALSE) + { + return SANE_STATUS_INVAL; + } + + if (non_blocking == SANE_FALSE) + { + status = SANE_STATUS_GOOD; + } + else + { + status = SANE_STATUS_UNSUPPORTED; + } + + DBG (DBG_proc, "sane_set_io_mode: exit\n"); + + return status; +} + +SANE_Status +sane_get_select_fd (SANE_Handle __sane_unused__ handle, SANE_Int __sane_unused__ * fd) +{ + DBG (DBG_proc, "sane_get_select_fd: enter\n"); + + DBG (DBG_proc, "sane_get_select_fd: exit\n"); + + return SANE_STATUS_UNSUPPORTED; +} + +void +sane_cancel (SANE_Handle handle) +{ + Teco_Scanner *dev = handle; + + DBG (DBG_proc, "sane_cancel: enter\n"); + + do_cancel (dev); + + DBG (DBG_proc, "sane_cancel: exit\n"); +} + +void +sane_close (SANE_Handle handle) +{ + Teco_Scanner *dev = handle; + Teco_Scanner *dev_tmp; + + DBG (DBG_proc, "sane_close: enter\n"); + + do_cancel (dev); + teco_close (dev); + + /* Unlink dev. */ + if (first_dev == dev) + { + first_dev = dev->next; + } + else + { + dev_tmp = first_dev; + while (dev_tmp->next && dev_tmp->next != dev) + { + dev_tmp = dev_tmp->next; + } + if (dev_tmp->next != NULL) + { + dev_tmp->next = dev_tmp->next->next; + } + } + + teco_free (dev); + num_devices--; + + DBG (DBG_proc, "sane_close: exit\n"); +} + +void +sane_exit (void) +{ + DBG (DBG_proc, "sane_exit: enter\n"); + + while (first_dev) + { + sane_close (first_dev); + } + + if (devlist) + { + free (devlist); + devlist = NULL; + } + + DBG (DBG_proc, "sane_exit: exit\n"); +} |