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