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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /backend/genesys_gl841.c
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'backend/genesys_gl841.c')
-rw-r--r--backend/genesys_gl841.c5733
1 files changed, 5733 insertions, 0 deletions
diff --git a/backend/genesys_gl841.c b/backend/genesys_gl841.c
new file mode 100644
index 0000000..2b22d2c
--- /dev/null
+++ b/backend/genesys_gl841.c
@@ -0,0 +1,5733 @@
+/* sane - Scanner Access Now Easy.
+
+ Copyright (C) 2003 Oliver Rauch
+ Copyright (C) 2003, 2004 Henning Meier-Geinitz <henning@meier-geinitz.de>
+ Copyright (C) 2004 Gerhard Jaeger <gerhard@gjaeger.de>
+ Copyright (C) 2004-2013 Stéphane Voltz <stef.dev@free.fr>
+ Copyright (C) 2005 Philipp Schmid <philipp8288@web.de>
+ Copyright (C) 2005-2009 Pierre Willenbrock <pierre@pirsoft.dnsalias.org>
+ Copyright (C) 2006 Laurent Charpentier <laurent_pubs@yahoo.com>
+ Copyright (C) 2010 Chris Berry <s0457957@sms.ed.ac.uk> and Michael Rickmann <mrickma@gwdg.de>
+ for Plustek Opticbook 3600 support
+
+
+ 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.
+*/
+
+#undef BACKEND_NAME
+#define BACKEND_NAME genesys_gl841
+
+#include "genesys_gl841.h"
+
+/****************************************************************************
+ Low level function
+ ****************************************************************************/
+
+/* ------------------------------------------------------------------------ */
+/* Read and write RAM, registers and AFE */
+/* ------------------------------------------------------------------------ */
+
+/* Write to many registers */
+/* Note: There is no known bulk register write,
+ this function is sending single registers instead */
+static SANE_Status
+gl841_bulk_write_register (Genesys_Device * dev,
+ Genesys_Register_Set * reg, size_t elems)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ unsigned int i, c;
+ uint8_t buffer[GENESYS_MAX_REGS * 2];
+
+ /* handle differently sized register sets, reg[0x00] is the last one */
+ i = 0;
+ while ((i < elems) && (reg[i].address != 0))
+ i++;
+
+ elems = i;
+
+ DBG (DBG_io, "gl841_bulk_write_register (elems = %lu)\n",
+ (u_long) elems);
+
+ for (i = 0; i < elems; i++) {
+
+ buffer[i * 2 + 0] = reg[i].address;
+ buffer[i * 2 + 1] = reg[i].value;
+
+ DBG (DBG_io2, "reg[0x%02x] = 0x%02x\n", buffer[i * 2 + 0],
+ buffer[i * 2 + 1]);
+ }
+
+ for (i = 0; i < elems;) {
+ c = elems - i;
+ if (c > 32) /*32 is max. checked that.*/
+ c = 32;
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_BUFFER,
+ VALUE_SET_REGISTER, INDEX, c * 2, buffer + i * 2);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_bulk_write_register: failed while writing command: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ i += c;
+ }
+
+ DBG (DBG_io, "gl841_bulk_write_register: wrote %lu registers\n",
+ (u_long) elems);
+ return status;
+}
+
+/* Write bulk data (e.g. shading, gamma) */
+static SANE_Status
+gl841_bulk_write_data (Genesys_Device * dev, uint8_t addr,
+ uint8_t * data, size_t len)
+{
+ SANE_Status status;
+ size_t size;
+ uint8_t outdata[8];
+
+ DBG (DBG_io, "gl841_bulk_write_data writing %lu bytes\n",
+ (u_long) len);
+
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_REGISTER,
+ VALUE_SET_REGISTER, INDEX, 1, &addr);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_bulk_write_data failed while setting register: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ while (len)
+ {
+ if (len > BULKOUT_MAXSIZE)
+ size = BULKOUT_MAXSIZE;
+ else
+ size = len;
+
+ outdata[0] = BULK_OUT;
+ outdata[1] = BULK_RAM;
+ outdata[2] = VALUE_BUFFER & 0xff;
+ outdata[3] = (VALUE_BUFFER >> 8) & 0xff;
+ outdata[4] = (size & 0xff);
+ outdata[5] = ((size >> 8) & 0xff);
+ outdata[6] = ((size >> 16) & 0xff);
+ outdata[7] = ((size >> 24) & 0xff);
+
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_BUFFER,
+ VALUE_BUFFER, INDEX, sizeof (outdata),
+ outdata);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_bulk_write_data failed while writing command: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_usb_write_bulk (dev->dn, data, &size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_bulk_write_data failed while writing bulk data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_io2,
+ "gl841_bulk_write_data wrote %lu bytes, %lu remaining\n",
+ (u_long) size, (u_long) (len - size));
+
+ len -= size;
+ data += size;
+ }
+
+ DBG (DBG_io, "gl841_bulk_write_data: completed\n");
+
+ return status;
+}
+
+/* for debugging transfer rate*/
+/*
+#include <sys/time.h>
+static struct timeval start_time;
+static void
+starttime(){
+ gettimeofday(&start_time,NULL);
+}
+static void
+printtime(char *p) {
+ struct timeval t;
+ long long int dif;
+ gettimeofday(&t,NULL);
+ dif = t.tv_sec - start_time.tv_sec;
+ dif = dif*1000000 + t.tv_usec - start_time.tv_usec;
+ fprintf(stderr,"%s %lluµs\n",p,dif);
+}
+*/
+
+/* Read bulk data (e.g. scanned data) */
+static SANE_Status
+gl841_bulk_read_data (Genesys_Device * dev, uint8_t addr,
+ uint8_t * data, size_t len)
+{
+ SANE_Status status;
+ size_t size;
+ uint8_t outdata[8];
+
+ DBG (DBG_io, "gl841_bulk_read_data: requesting %lu bytes\n",
+ (u_long) len);
+
+ if (len == 0)
+ return SANE_STATUS_GOOD;
+
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_REGISTER,
+ VALUE_SET_REGISTER, INDEX, 1, &addr);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_bulk_read_data failed while setting register: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ outdata[0] = BULK_IN;
+ outdata[1] = BULK_RAM;
+ outdata[2] = VALUE_BUFFER & 0xff;
+ outdata[3] = (VALUE_BUFFER >> 8) & 0xff;
+ outdata[4] = (len & 0xff);
+ outdata[5] = ((len >> 8) & 0xff);
+ outdata[6] = ((len >> 16) & 0xff);
+ outdata[7] = ((len >> 24) & 0xff);
+
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_BUFFER,
+ VALUE_BUFFER, INDEX, sizeof (outdata), outdata);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_bulk_read_data failed while writing command: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ while (len)
+ {
+ if (len > BULKIN_MAXSIZE)
+ size = BULKIN_MAXSIZE;
+ else
+ size = len;
+
+ DBG (DBG_io2,
+ "gl841_bulk_read_data: trying to read %lu bytes of data\n",
+ (u_long) size);
+
+ status = sanei_usb_read_bulk (dev->dn, data, &size);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_bulk_read_data failed while reading bulk data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_io2,
+ "gl841_bulk_read_data read %lu bytes, %lu remaining\n",
+ (u_long) size, (u_long) (len - size));
+
+ len -= size;
+ data += size;
+ }
+
+ DBG (DBG_io, "gl841_bulk_read_data: completed\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+/* Set address for writing data */
+static SANE_Status
+gl841_set_buffer_address_gamma (Genesys_Device * dev, uint32_t addr)
+{
+ SANE_Status status;
+
+ DBG (DBG_io, "gl841_set_buffer_address_gamma: setting address to 0x%05x\n",
+ addr & 0xfffffff0);
+
+ addr = addr >> 4;
+
+ status = sanei_genesys_write_register (dev, 0x5c, (addr & 0xff));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_set_buffer_address_gamma: failed while writing low byte: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ addr = addr >> 8;
+ status = sanei_genesys_write_register (dev, 0x5b, (addr & 0xff));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_set_buffer_address_gamma: failed while writing high byte: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_io, "gl841_set_buffer_address_gamma: completed\n");
+
+ return status;
+}
+
+/* Write bulk data (e.g. gamma) */
+static SANE_Status
+gl841_bulk_write_data_gamma (Genesys_Device * dev, uint8_t addr,
+ uint8_t * data, size_t len)
+{
+ SANE_Status status;
+ size_t size;
+ uint8_t outdata[8];
+
+ DBG (DBG_io, "gl841_bulk_write_data_gamma writing %lu bytes\n",
+ (u_long) len);
+
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_REGISTER,
+ VALUE_SET_REGISTER, INDEX, 1, &addr);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_bulk_write_data_gamma failed while setting register: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ while (len)
+ {
+ if (len > BULKOUT_MAXSIZE)
+ size = BULKOUT_MAXSIZE;
+ else
+ size = len;
+
+ outdata[0] = BULK_OUT;
+ outdata[1] = BULK_RAM;
+ outdata[2] = 0x00;/* 0x82 works, too */
+ outdata[3] = 0x00;
+ outdata[4] = (size & 0xff);
+ outdata[5] = ((size >> 8) & 0xff);
+ outdata[6] = ((size >> 16) & 0xff);
+ outdata[7] = ((size >> 24) & 0xff);
+
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_BUFFER,
+ VALUE_BUFFER, INDEX, sizeof (outdata),
+ outdata);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_bulk_write_data_gamma failed while writing command: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_usb_write_bulk (dev->dn, data, &size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "genesys_bulk_write_data_gamma failed while writing bulk data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_io2,
+ "genesys_bulk_write_data:gamma wrote %lu bytes, %lu remaining\n",
+ (u_long) size, (u_long) (len - size));
+
+ len -= size;
+ data += size;
+ }
+
+ DBG (DBG_io, "genesys_bulk_write_data_gamma: completed\n");
+
+ return status;
+}
+
+
+/****************************************************************************
+ Mid level functions
+ ****************************************************************************/
+
+static SANE_Bool
+gl841_get_fast_feed_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, 0x02);
+ if (r && (r->value & REG02_FASTFED))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl841_get_filter_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, 0x04);
+ if (r && (r->value & REG04_FILTER))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl841_get_lineart_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, 0x04);
+ if (r && (r->value & REG04_LINEART))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl841_get_bitset_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, 0x04);
+ if (r && (r->value & REG04_BITSET))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl841_get_gain4_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, 0x06);
+ if (r && (r->value & REG06_GAIN4))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl841_test_buffer_empty_bit (SANE_Byte val)
+{
+ if (val & REG41_BUFEMPTY)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl841_test_motor_flag_bit (SANE_Byte val)
+{
+ if (val & REG41_MOTORENB)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+/** copy sensor specific settings */
+/* *dev : device infos
+ *regs : registers to be set
+ extended : do extended set up
+ half_ccd: set up for half ccd resolution
+ all registers 08-0B, 10-1D, 52-59 are set up. They shouldn't
+ appear anywhere else but in register_ini
+
+Responsible for signals to CCD/CIS:
+ CCD_CK1X (CK1INV(0x16),CKDIS(0x16),CKTOGGLE(0x18),CKDELAY(0x18),MANUAL1(0x1A),CK1MTGL(0x1C),CK1LOW(0x1D),CK1MAP(0x74,0x75,0x76),CK1NEG(0x7D))
+ CCD_CK2X (CK2INV(0x16),CKDIS(0x16),CKTOGGLE(0x18),CKDELAY(0x18),MANUAL1(0x1A),CK1LOW(0x1D),CK1NEG(0x7D))
+ CCD_CK3X (MANUAL3(0x1A),CK3INV(0x1A),CK3MTGL(0x1C),CK3LOW(0x1D),CK3MAP(0x77,0x78,0x79),CK3NEG(0x7D))
+ CCD_CK4X (MANUAL3(0x1A),CK4INV(0x1A),CK4MTGL(0x1C),CK4LOW(0x1D),CK4MAP(0x7A,0x7B,0x7C),CK4NEG(0x7D))
+ CCD_CPX (CTRLHI(0x16),CTRLINV(0x16),CTRLDIS(0x16),CPH(0x72),CPL(0x73),CPNEG(0x7D))
+ CCD_RSX (CTRLHI(0x16),CTRLINV(0x16),CTRLDIS(0x16),RSH(0x70),RSL(0x71),RSNEG(0x7D))
+ CCD_TGX (TGINV(0x16),TGMODE(0x17),TGW(0x17),EXPR(0x10,0x11),TGSHLD(0x1D))
+ CCD_TGG (TGINV(0x16),TGMODE(0x17),TGW(0x17),EXPG(0x12,0x13),TGSHLD(0x1D))
+ CCD_TGB (TGINV(0x16),TGMODE(0x17),TGW(0x17),EXPB(0x14,0x15),TGSHLD(0x1D))
+ LAMP_SW (EXPR(0x10,0x11),XPA_SEL(0x03),LAMP_PWR(0x03),LAMPTIM(0x03),MTLLAMP(0x04),LAMPPWM(0x29))
+ XPA_SW (EXPG(0x12,0x13),XPA_SEL(0x03),LAMP_PWR(0x03),LAMPTIM(0x03),MTLLAMP(0x04),LAMPPWM(0x29))
+ LAMP_B (EXPB(0x14,0x15),LAMP_PWR(0x03))
+
+other registers:
+ CISSET(0x01),CNSET(0x18),DCKSEL(0x18),SCANMOD(0x18),EXPDMY(0x19),LINECLP(0x1A),CKAREA(0x1C),TGTIME(0x1C),LINESEL(0x1E),DUMMY(0x34)
+
+Responsible for signals to AFE:
+ VSMP (VSMP(0x58),VSMPW(0x58))
+ BSMP (BSMP(0x59),BSMPW(0x59))
+
+other register settings depending on this:
+ RHI(0x52),RLOW(0x53),GHI(0x54),GLOW(0x55),BHI(0x56),BLOW(0x57),
+
+*/
+static void
+sanei_gl841_setup_sensor (Genesys_Device * dev,
+ Genesys_Register_Set * regs,
+ SANE_Bool extended, SANE_Bool half_ccd)
+{
+ Genesys_Register_Set *r;
+ int i;
+
+ DBG (DBG_proc, "gl841_setup_sensor\n");
+
+ r = sanei_genesys_get_address (regs, 0x70);
+ for (i = 0; i < 4; i++, r++)
+ r->value = dev->sensor.regs_0x08_0x0b[i];
+
+ r = sanei_genesys_get_address (regs, 0x16);
+ for (i = 0x06; i < 0x0a; i++, r++)
+ r->value = dev->sensor.regs_0x10_0x1d[i];
+
+ r = sanei_genesys_get_address (regs, 0x1a);
+ for (i = 0x0a; i < 0x0e; i++, r++)
+ r->value = dev->sensor.regs_0x10_0x1d[i];
+
+ r = sanei_genesys_get_address (regs, 0x52);
+ for (i = 0; i < 9; i++, r++)
+ r->value = dev->sensor.regs_0x52_0x5e[i];
+
+ /* don't go any further if no extended setup */
+ if (!extended)
+ return;
+
+ /* todo : add more CCD types if needed */
+ /* we might want to expand the Sensor struct to have these
+ 2 kind of settings */
+ if (dev->model->ccd_type == CCD_5345)
+ {
+ if (half_ccd)
+ {
+ /* settings for CCD used at half is max resolution */
+ r = sanei_genesys_get_address (regs, 0x70);
+ r->value = 0x00;
+ r = sanei_genesys_get_address (regs, 0x71);
+ r->value = 0x05;
+ r = sanei_genesys_get_address (regs, 0x72);
+ r->value = 0x06;
+ r = sanei_genesys_get_address (regs, 0x73);
+ r->value = 0x08;
+ r = sanei_genesys_get_address (regs, 0x18);
+ r->value = 0x28;
+ r = sanei_genesys_get_address (regs, 0x58);
+ r->value = 0x80 | (r->value & 0x03); /* VSMP=16 */
+ }
+ else
+ {
+ /* swap latch times */
+ r = sanei_genesys_get_address (regs, 0x18);
+ r->value = 0x30;
+ r = sanei_genesys_get_address (regs, 0x52);
+ for (i = 0; i < 6; i++, r++)
+ r->value = dev->sensor.regs_0x52_0x5e[(i + 3) % 6];
+ r = sanei_genesys_get_address (regs, 0x58);
+ r->value = 0x20 | (r->value & 0x03); /* VSMP=4 */
+ }
+ return;
+ }
+
+ if (dev->model->ccd_type == CCD_HP2300)
+ {
+ /* settings for CCD used at half is max resolution */
+ if (half_ccd)
+ {
+ r = sanei_genesys_get_address (regs, 0x70);
+ r->value = 0x16;
+ r = sanei_genesys_get_address (regs, 0x71);
+ r->value = 0x00;
+ r = sanei_genesys_get_address (regs, 0x72);
+ r->value = 0x01;
+ r = sanei_genesys_get_address (regs, 0x73);
+ r->value = 0x03;
+ /* manual clock programming */
+ r = sanei_genesys_get_address (regs, 0x1d);
+ r->value |= 0x80;
+ }
+ else
+ {
+ r = sanei_genesys_get_address (regs, 0x70);
+ r->value = 1;
+ r = sanei_genesys_get_address (regs, 0x71);
+ r->value = 3;
+ r = sanei_genesys_get_address (regs, 0x72);
+ r->value = 4;
+ r = sanei_genesys_get_address (regs, 0x73);
+ r->value = 6;
+ }
+ r = sanei_genesys_get_address (regs, 0x58);
+ r->value = 0x80 | (r->value & 0x03); /* VSMP=16 */
+ return;
+ }
+}
+
+/** Test if the ASIC works
+ */
+/*TODO: make this functional*/
+static SANE_Status
+sanei_gl841_asic_test (Genesys_Device * dev)
+{
+ SANE_Status status;
+ uint8_t val;
+ uint8_t *data;
+ uint8_t *verify_data;
+ size_t size, verify_size;
+ unsigned int i;
+
+ DBG (DBG_proc, "sanei_gl841_asic_test\n");
+
+ return SANE_STATUS_INVAL;
+
+ /* set and read exposure time, compare if it's the same */
+ status = sanei_genesys_write_register (dev, 0x38, 0xde);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sanei_gl841_asic_test: failed to write register: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_write_register (dev, 0x39, 0xad);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sanei_gl841_asic_test: failed to write register: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_read_register (dev, 0x38, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sanei_gl841_asic_test: failed to read register: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ if (val != 0xde) /* value of register 0x38 */
+ {
+ DBG (DBG_error,
+ "sanei_gl841_asic_test: register contains invalid value\n");
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ status = sanei_genesys_read_register (dev, 0x39, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sanei_gl841_asic_test: failed to read register: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ if (val != 0xad) /* value of register 0x39 */
+ {
+ DBG (DBG_error,
+ "sanei_gl841_asic_test: register contains invalid value\n");
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ /* ram test: */
+ size = 0x40000;
+ verify_size = size + 0x80;
+ /* todo: looks like the read size must be a multiple of 128?
+ otherwise the read doesn't succeed the second time after the scanner has
+ been plugged in. Very strange. */
+
+ data = (uint8_t *) malloc (size);
+ if (!data)
+ {
+ DBG (DBG_error, "sanei_gl841_asic_test: could not allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ verify_data = (uint8_t *) malloc (verify_size);
+ if (!verify_data)
+ {
+ free (data);
+ DBG (DBG_error, "sanei_gl841_asic_test: could not allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ for (i = 0; i < (size - 1); i += 2)
+ {
+ data[i] = i / 512;
+ data[i + 1] = (i / 2) % 256;
+ }
+
+ status = sanei_genesys_set_buffer_address (dev, 0x0000);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "sanei_gl841_asic_test: failed to set buffer address: %s\n",
+ sane_strstatus (status));
+ free (data);
+ free (verify_data);
+ return status;
+ }
+
+/* status = gl841_bulk_write_data (dev, 0x3c, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "sanei_gl841_asic_test: failed to bulk write data: %s\n",
+ sane_strstatus (status));
+ free (data);
+ free (verify_data);
+ return status;
+ }*/
+
+ status = sanei_genesys_set_buffer_address (dev, 0x0000);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "sanei_gl841_asic_test: failed to set buffer address: %s\n",
+ sane_strstatus (status));
+ free (data);
+ free (verify_data);
+ return status;
+ }
+
+ status =
+ gl841_bulk_read_data (dev, 0x45, (uint8_t *) verify_data,
+ verify_size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "sanei_gl841_asic_test: failed to bulk read data: %s\n",
+ sane_strstatus (status));
+ free (data);
+ free (verify_data);
+ return status;
+ }
+
+ /* todo: why i + 2 ? */
+ for (i = 0; i < size; i++)
+ {
+ if (verify_data[i] != data[i])
+ {
+ DBG (DBG_error, "sanei_gl841_asic_test: data verification error\n");
+ DBG (DBG_info, "0x%.8x: got %.2x %.2x %.2x %.2x, expected %.2x %.2x %.2x %.2x\n",
+ i,
+ verify_data[i],
+ verify_data[i+1],
+ verify_data[i+2],
+ verify_data[i+3],
+ data[i],
+ data[i+1],
+ data[i+2],
+ data[i+3]);
+ free (data);
+ free (verify_data);
+ return SANE_STATUS_IO_ERROR;
+ }
+ }
+
+ free (data);
+ free (verify_data);
+
+ DBG (DBG_info, "sanei_gl841_asic_test: completed\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+/* returns the max register bulk size */
+static int
+gl841_bulk_full_size (void)
+{
+ return GENESYS_GL841_MAX_REGS;
+}
+
+/*
+ * Set all registers to default values
+ * (function called only once at the beginning)
+ */
+static void
+gl841_init_registers (Genesys_Device * dev)
+{
+ int nr, addr;
+
+ DBG (DBG_proc, "gl841_init_registers\n");
+
+ nr = 0;
+ memset (dev->reg, 0, GENESYS_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ for (addr = 1; addr <= 0x0a; addr++)
+ dev->reg[nr++].address = addr;
+ for (addr = 0x10; addr <= 0x27; addr++)
+ dev->reg[nr++].address = addr;
+ dev->reg[nr++].address = 0x29;
+ for (addr = 0x2c; addr <= 0x39; addr++)
+ dev->reg[nr++].address = addr;
+ for (addr = 0x3d; addr <= 0x3f; addr++)
+ dev->reg[nr++].address = addr;
+ for (addr = 0x52; addr <= 0x5a; addr++)
+ dev->reg[nr++].address = addr;
+ for (addr = 0x5d; addr <= 0x87; addr++)
+ dev->reg[nr++].address = addr;
+
+
+ dev->reg[reg_0x01].value = 0x20; /* (enable shading), CCD, color, 1M */
+ if (dev->model->is_cis == SANE_TRUE)
+ {
+ dev->reg[reg_0x01].value |= REG01_CISSET;
+ }
+ else
+ {
+ dev->reg[reg_0x01].value &= ~REG01_CISSET;
+ }
+
+ dev->reg[reg_0x02].value = 0x30 /*0x38 */ ; /* auto home, one-table-move, full step */
+ dev->reg[reg_0x02].value |= REG02_AGOHOME;
+ dev->reg[reg_0x02].value |= REG02_MTRPWR;
+ dev->reg[reg_0x02].value |= REG02_FASTFED;
+
+ dev->reg[reg_0x03].value = 0x1f /*0x17 */ ; /* lamp on */
+ dev->reg[reg_0x03].value |= REG03_AVEENB;
+
+ if (dev->model->ccd_type == CCD_PLUSTEK_3600) /* AD front end */
+ {
+ dev->reg[reg_0x04].value = (2 << REG04S_AFEMOD) | 0x02;
+ }
+ else /* Wolfson front end */
+ {
+ dev->reg[reg_0x04].value |= 1 << REG04S_AFEMOD;
+ }
+
+ dev->reg[reg_0x05].value = 0x00; /* disable gamma, 24 clocks/pixel */
+ if (dev->sensor.sensor_pixels < 0x1500)
+ dev->reg[reg_0x05].value |= REG05_DPIHW_600;
+ else if (dev->sensor.sensor_pixels < 0x2a80)
+ dev->reg[reg_0x05].value |= REG05_DPIHW_1200;
+ else if (dev->sensor.sensor_pixels < 0x5400)
+ dev->reg[reg_0x05].value |= REG05_DPIHW_2400;
+ else
+ {
+ dev->reg[reg_0x05].value |= REG05_DPIHW_2400;
+ DBG (DBG_warn,
+ "gl841_init_registers: Cannot handle sensor pixel count %d\n",
+ dev->sensor.sensor_pixels);
+ }
+
+
+ dev->reg[reg_0x06].value |= REG06_PWRBIT;
+ dev->reg[reg_0x06].value |= REG06_GAIN4;
+
+ /* XP300 CCD needs different clock and clock/pixels values */
+ if (dev->model->ccd_type != CCD_XP300 && dev->model->ccd_type != CCD_DP685
+ && dev->model->ccd_type != CCD_PLUSTEK_3600)
+ {
+ dev->reg[reg_0x06].value |= 0 << REG06S_SCANMOD;
+ dev->reg[reg_0x09].value |= 1 << REG09S_CLKSET;
+ }
+ else
+ {
+ dev->reg[reg_0x06].value |= 0x05 << REG06S_SCANMOD; /* 15 clocks/pixel */
+ dev->reg[reg_0x09].value = 0; /* 24 MHz CLKSET */
+ }
+
+ dev->reg[reg_0x1e].value = 0xf0; /* watch-dog time */
+
+ dev->reg[reg_0x17].value |= 1 << REG17S_TGW;
+
+ dev->reg[reg_0x19].value = 0x50;
+
+ dev->reg[reg_0x1d].value |= 1 << REG1DS_TGSHLD;
+
+ dev->reg[reg_0x1e].value |= 1 << REG1ES_WDTIME;
+
+/*SCANFED*/
+ dev->reg[reg_0x1f].value = 0x01;
+
+/*BUFSEL*/
+ dev->reg[reg_0x20].value = 0x20;
+
+/*LAMPPWM*/
+ dev->reg[reg_0x29].value = 0xff;
+
+/*BWHI*/
+ dev->reg[reg_0x2e].value = 0x80;
+
+/*BWLOW*/
+ dev->reg[reg_0x2f].value = 0x80;
+
+/*LPERIOD*/
+ dev->reg[reg_0x38].value = 0x4f;
+ dev->reg[reg_0x39].value = 0xc1;
+
+/*VSMPW*/
+ dev->reg[reg_0x58].value |= 3 << REG58S_VSMPW;
+
+/*BSMPW*/
+ dev->reg[reg_0x59].value |= 3 << REG59S_BSMPW;
+
+/*RLCSEL*/
+ dev->reg[reg_0x5a].value |= REG5A_RLCSEL;
+
+/*STOPTIM*/
+ dev->reg[reg_0x5e].value |= 0x2 << REG5ES_STOPTIM;
+
+ sanei_gl841_setup_sensor (dev, dev->reg, 0, 0);
+
+ /* set up GPIO */
+ dev->reg[reg_0x6c].value = dev->gpo.value[0];
+ dev->reg[reg_0x6d].value = dev->gpo.value[1];
+ dev->reg[reg_0x6e].value = dev->gpo.enable[0];
+ dev->reg[reg_0x6f].value = dev->gpo.enable[1];
+
+ if (dev->model->gpo_type == GPO_CANONLIDE35)
+ {
+ dev->reg[reg_0x6b].value |= REG6B_GPO18;
+ dev->reg[reg_0x6b].value &= ~REG6B_GPO17;
+ }
+
+ if (dev->model->gpo_type == GPO_XP300)
+ {
+ dev->reg[reg_0x6b].value |= REG6B_GPO17;
+ }
+
+ if (dev->model->gpo_type == GPO_DP685)
+ {
+ /* REG6B_GPO18 lights on green led */
+ dev->reg[reg_0x6b].value |= REG6B_GPO17|REG6B_GPO18;
+ }
+
+ DBG (DBG_proc, "gl841_init_registers complete\n");
+}
+
+/* Send slope table for motor movement
+ slope_table in machine byte order
+ */
+static SANE_Status
+gl841_send_slope_table (Genesys_Device * dev, int table_nr,
+ uint16_t * slope_table, int steps)
+{
+ int dpihw;
+ int start_address;
+ SANE_Status status;
+ uint8_t *table;
+/*#ifdef WORDS_BIGENDIAN*/
+ int i;
+/*#endif*/
+
+ DBG (DBG_proc, "gl841_send_slope_table (table_nr = %d, steps = %d)\n",
+ table_nr, steps);
+
+ dpihw = dev->reg[reg_0x05].value >> 6;
+
+ if (dpihw == 0) /* 600 dpi */
+ start_address = 0x08000;
+ else if (dpihw == 1) /* 1200 dpi */
+ start_address = 0x10000;
+ else if (dpihw == 2) /* 2400 dpi */
+ start_address = 0x20000;
+ else /* reserved */
+ return SANE_STATUS_INVAL;
+
+/*#ifdef WORDS_BIGENDIAN*/
+ table = (uint8_t*)malloc(steps * 2);
+ for(i = 0; i < steps; i++) {
+ table[i * 2] = slope_table[i] & 0xff;
+ table[i * 2 + 1] = slope_table[i] >> 8;
+ }
+/*#else
+ table = (uint8_t*)slope_table;
+ #endif*/
+
+ status =
+ sanei_genesys_set_buffer_address (dev, start_address + table_nr * 0x200);
+ if (status != SANE_STATUS_GOOD)
+ {
+/*#ifdef WORDS_BIGENDIAN*/
+ free(table);
+/*#endif*/
+ DBG (DBG_error,
+ "gl841_send_slope_table: failed to set buffer address: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status =
+ gl841_bulk_write_data (dev, 0x3c, (uint8_t *) table,
+ steps * 2);
+ if (status != SANE_STATUS_GOOD)
+ {
+/*#ifdef WORDS_BIGENDIAN*/
+ free(table);
+/*#endif*/
+ DBG (DBG_error,
+ "gl841_send_slope_table: failed to send slope table: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+/*#ifdef WORDS_BIGENDIAN*/
+ free(table);
+/*#endif*/
+ DBG (DBG_proc, "gl841_send_slope_table: completed\n");
+ return status;
+}
+
+/* Set values of Analog Device type frontend */
+static SANE_Status
+gl841_set_ad_fe (Genesys_Device * dev, uint8_t set)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int i;
+ DBG (DBG_proc, "gl841_set_ad_fe(): start\n");
+ if (set == AFE_INIT)
+ {
+ DBG (DBG_proc, "gl841_set_ad_fe(): setting DAC %u\n",
+ dev->model->dac_type);
+
+ /* sets to default values */
+ sanei_genesys_init_fe (dev);
+
+ /* write them to analog frontend */
+ status = sanei_genesys_fe_write_data (dev, 0x00, dev->frontend.reg[0]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: writing reg 0x00 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_fe_write_data (dev, 0x01, dev->frontend.reg[1]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: writing reg 0x01 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ for (i = 0; i < 6; i++)
+ {
+ status =
+ sanei_genesys_fe_write_data (dev, 0x02 + i, 0x00);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_set_ad_fe: writing sign[%d] failed: %s\n", 0x02 + i,
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ }
+ if (set == AFE_SET)
+ {
+ /* write them to analog frontend */
+ status = sanei_genesys_fe_write_data (dev, 0x00, dev->frontend.reg[0]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: writing reg 0x00 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_fe_write_data (dev, 0x01, dev->frontend.reg[1]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: writing reg 0x01 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* Write fe 0x02 (red gain)*/
+ status = sanei_genesys_fe_write_data (dev, 0x02, dev->frontend.gain[0]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: writing fe 0x02 (gain r) fail: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* Write fe 0x03 (green gain)*/
+ status = sanei_genesys_fe_write_data (dev, 0x03, dev->frontend.gain[1]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: writing fe 0x03 (gain g) fail: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* Write fe 0x04 (blue gain)*/
+ status = sanei_genesys_fe_write_data (dev, 0x04, dev->frontend.gain[2]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: writing fe 0x04 (gain b) fail: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* Write fe 0x05 (red offset)*/
+ status =
+ sanei_genesys_fe_write_data (dev, 0x05, dev->frontend.offset[0]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: write fe 0x05 (offset r) fail: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* Write fe 0x06 (green offset)*/
+ status =
+ sanei_genesys_fe_write_data (dev, 0x06, dev->frontend.offset[1]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: write fe 0x06 (offset g) fail: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* Write fe 0x07 (blue offset)*/
+ status =
+ sanei_genesys_fe_write_data (dev, 0x07, dev->frontend.offset[2]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_ad_fe: write fe 0x07 (offset b) fail: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ DBG (DBG_proc, "gl841_set_ad_fe(): end\n");
+
+ return status;
+}
+
+/* Set values of analog frontend */
+static SANE_Status
+gl841_set_fe (Genesys_Device * dev, uint8_t set)
+{
+ SANE_Status status;
+ int i;
+
+ DBG (DBG_proc, "gl841_set_fe (%s)\n",
+ set == AFE_INIT ? "init" : set == AFE_SET ? "set" : set ==
+ AFE_POWER_SAVE ? "powersave" : "huh?");
+
+ /* Analog Device type frontend */
+ if ((dev->reg[reg_0x04].value & REG04_FESET) == 0x02)
+ {
+ return gl841_set_ad_fe (dev, set);
+ }
+
+ if ((dev->reg[reg_0x04].value & REG04_FESET) != 0x00)
+ {
+ DBG (DBG_proc, "gl841_set_fe(): unsupported frontend type %d\n",
+ dev->reg[reg_0x04].value & REG04_FESET);
+ return SANE_STATUS_UNSUPPORTED;
+ }
+
+ if (set == AFE_INIT)
+ {
+ DBG (DBG_proc, "gl841_set_fe(): setting DAC %u\n",
+ dev->model->dac_type);
+ sanei_genesys_init_fe (dev);
+
+ /* reset only done on init */
+ status = sanei_genesys_fe_write_data (dev, 0x04, 0x80);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_fe: reset fe failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ /*
+ if (dev->model->ccd_type == CCD_HP2300
+ || dev->model->ccd_type == CCD_HP2400)
+ {
+ val = 0x07;
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT,
+ REQUEST_REGISTER, GPIO_OUTPUT_ENABLE,
+ INDEX, 1, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_set_fe failed resetting frontend: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }*/
+ }
+ DBG (DBG_proc, "gl841_set_fe(): frontend reset complete\n");
+ }
+
+
+ if (set == AFE_POWER_SAVE)
+ {
+ status = sanei_genesys_fe_write_data (dev, 0x01, 0x02);
+ if (status != SANE_STATUS_GOOD)
+ DBG (DBG_error, "gl841_set_fe: writing data failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* todo : base this test on cfg reg3 or a CCD family flag to be created */
+ /*if (dev->model->ccd_type!=CCD_HP2300 && dev->model->ccd_type!=CCD_HP2400) */
+ {
+
+ status = sanei_genesys_fe_write_data (dev, 0x00, dev->frontend.reg[0]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_fe: writing reg0 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ status = sanei_genesys_fe_write_data (dev, 0x02, dev->frontend.reg[2]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_fe: writing reg2 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ status = sanei_genesys_fe_write_data (dev, 0x01, dev->frontend.reg[1]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_fe: writing reg1 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_fe_write_data (dev, 0x03, dev->frontend.reg[3]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_fe: writing reg3 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_fe_write_data (dev, 0x06, dev->frontend.reg2[0]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_fe: writing reg6 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_fe_write_data (dev, 0x08, dev->frontend.reg2[1]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_fe: writing reg8 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_fe_write_data (dev, 0x09, dev->frontend.reg2[2]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "gl841_set_fe: writing reg9 failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ status =
+ sanei_genesys_fe_write_data (dev, 0x24 + i, dev->frontend.sign[i]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_set_fe: writing sign[%d] failed: %s\n", i,
+ sane_strstatus (status));
+ return status;
+ }
+
+ status =
+ sanei_genesys_fe_write_data (dev, 0x28 + i, dev->frontend.gain[i]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_set_fe: writing gain[%d] failed: %s\n", i,
+ sane_strstatus (status));
+ return status;
+ }
+
+ status =
+ sanei_genesys_fe_write_data (dev, 0x20 + i,
+ dev->frontend.offset[i]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_set_fe: writing offset[%d] failed: %s\n", i,
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+
+ DBG (DBG_proc, "gl841_set_fe: completed\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+#define MOTOR_ACTION_FEED 1
+#define MOTOR_ACTION_GO_HOME 2
+#define MOTOR_ACTION_HOME_FREE 3
+
+/** @brief turn off motor
+ *
+ */
+static SANE_Status
+gl841_init_motor_regs_off(Genesys_Register_Set * reg,
+ unsigned int scan_lines)
+{
+ unsigned int feedl;
+ Genesys_Register_Set * r;
+
+ DBG (DBG_proc, "gl841_init_motor_regs_off : scan_lines=%d\n",
+ scan_lines);
+
+ feedl = 2;
+
+ r = sanei_genesys_get_address (reg, 0x3d);
+ r->value = (feedl >> 16) & 0xf;
+ r = sanei_genesys_get_address (reg, 0x3e);
+ r->value = (feedl >> 8) & 0xff;
+ r = sanei_genesys_get_address (reg, 0x3f);
+ r->value = feedl & 0xff;
+ r = sanei_genesys_get_address (reg, 0x5e);
+ r->value &= ~0xe0;
+
+ r = sanei_genesys_get_address (reg, 0x25);
+ r->value = (scan_lines >> 16) & 0xf;
+ r = sanei_genesys_get_address (reg, 0x26);
+ r->value = (scan_lines >> 8) & 0xff;
+ r = sanei_genesys_get_address (reg, 0x27);
+ r->value = scan_lines & 0xff;
+
+ r = sanei_genesys_get_address (reg, 0x02);
+ r->value &= ~0x01; /*LONGCURV OFF*/
+ r->value &= ~0x80; /*NOT_HOME OFF*/
+
+ r->value &= ~0x10;
+
+ r->value &= ~0x06;
+
+ r->value &= ~0x08;
+
+ r->value &= ~0x20;
+
+ r->value &= ~0x40;
+
+ r = sanei_genesys_get_address (reg, 0x67);
+ r->value = 0x3f;
+
+ r = sanei_genesys_get_address (reg, 0x68);
+ r->value = 0x3f;
+
+ r = sanei_genesys_get_address (reg, 0x21);
+ r->value = 0;
+
+ r = sanei_genesys_get_address (reg, 0x24);
+ r->value = 0;
+
+ r = sanei_genesys_get_address (reg, 0x69);
+ r->value = 0;
+
+ r = sanei_genesys_get_address (reg, 0x6a);
+ r->value = 0;
+
+ r = sanei_genesys_get_address (reg, 0x5f);
+ r->value = 0;
+
+
+ DBG (DBG_proc, "gl841_init_motor_regs_off : completed. \n");
+
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl841_init_motor_regs(Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ unsigned int feed_steps,/*1/base_ydpi*/
+/*maybe float for half/quarter step resolution?*/
+ unsigned int action,
+ unsigned int flags)
+{
+ SANE_Status status;
+ unsigned int fast_exposure;
+ int use_fast_fed = 0;
+ uint16_t fast_slope_table[256];
+ unsigned int fast_slope_steps = 0;
+ unsigned int feedl;
+ Genesys_Register_Set * r;
+/*number of scan lines to add in a scan_lines line*/
+
+ DBG (DBG_proc, "gl841_init_motor_regs : feed_steps=%d, action=%d, flags=%x\n",
+ feed_steps,
+ action,
+ flags);
+
+ memset(fast_slope_table,0xff,512);
+
+ gl841_send_slope_table (dev, 0, fast_slope_table, 256);
+ gl841_send_slope_table (dev, 1, fast_slope_table, 256);
+ gl841_send_slope_table (dev, 2, fast_slope_table, 256);
+ gl841_send_slope_table (dev, 3, fast_slope_table, 256);
+ gl841_send_slope_table (dev, 4, fast_slope_table, 256);
+
+
+ if (action == MOTOR_ACTION_FEED || action == MOTOR_ACTION_GO_HOME) {
+/* FEED and GO_HOME can use fastest slopes available */
+ fast_slope_steps = 256;
+ fast_exposure = sanei_genesys_exposure_time2(
+ dev,
+ dev->motor.base_ydpi / 4,
+ 0,/*step_type*/
+ 0,/*last used pixel*/
+ 0,
+ 0);
+
+ DBG (DBG_info, "gl841_init_motor_regs : fast_exposure=%d pixels\n",
+ fast_exposure);
+ }
+
+ if (action == MOTOR_ACTION_HOME_FREE) {
+/* HOME_FREE must be able to stop in one step, so do not try to get faster */
+ fast_slope_steps = 256;
+ fast_exposure = dev->motor.slopes[0][0].maximum_start_speed;
+ }
+
+ sanei_genesys_create_slope_table3 (
+ dev,
+ fast_slope_table, 256,
+ fast_slope_steps,
+ 0,
+ fast_exposure,
+ dev->motor.base_ydpi / 4,
+ &fast_slope_steps,
+ &fast_exposure, 0);
+
+ feedl = feed_steps - fast_slope_steps*2;
+ use_fast_fed = 1;
+
+/* all needed slopes available. we did even decide which mode to use.
+ what next?
+ - transfer slopes
+SCAN:
+flags \ use_fast_fed ! 0 1
+------------------------\--------------------
+ 0 ! 0,1,2 0,1,2,3
+MOTOR_FLAG_AUTO_GO_HOME ! 0,1,2,4 0,1,2,3,4
+OFF: none
+FEED: 3
+GO_HOME: 3
+HOME_FREE: 3
+ - setup registers
+ * slope specific registers (already done)
+ * DECSEL for HOME_FREE/GO_HOME/SCAN
+ * FEEDL
+ * MTRREV
+ * MTRPWR
+ * FASTFED
+ * STEPSEL
+ * MTRPWM
+ * FSTPSEL
+ * FASTPWM
+ * HOMENEG
+ * BWDSTEP
+ * FWDSTEP
+ * Z1
+ * Z2
+ */
+
+ r = sanei_genesys_get_address (reg, 0x3d);
+ r->value = (feedl >> 16) & 0xf;
+ r = sanei_genesys_get_address (reg, 0x3e);
+ r->value = (feedl >> 8) & 0xff;
+ r = sanei_genesys_get_address (reg, 0x3f);
+ r->value = feedl & 0xff;
+ r = sanei_genesys_get_address (reg, 0x5e);
+ r->value &= ~0xe0;
+
+ r = sanei_genesys_get_address (reg, 0x25);
+ r->value = 0;
+ r = sanei_genesys_get_address (reg, 0x26);
+ r->value = 0;
+ r = sanei_genesys_get_address (reg, 0x27);
+ r->value = 0;
+
+ r = sanei_genesys_get_address (reg, 0x02);
+ r->value &= ~0x01; /*LONGCURV OFF*/
+ r->value &= ~0x80; /*NOT_HOME OFF*/
+
+ r->value |= 0x10;
+
+ if (action == MOTOR_ACTION_GO_HOME)
+ r->value |= 0x06;
+ else
+ r->value &= ~0x06;
+
+ if (use_fast_fed)
+ r->value |= 0x08;
+ else
+ r->value &= ~0x08;
+
+ if (flags & MOTOR_FLAG_AUTO_GO_HOME)
+ r->value |= 0x20;
+ else
+ r->value &= ~0x20;
+
+ r->value &= ~0x40;
+
+ status = gl841_send_slope_table (dev, 3, fast_slope_table, 256);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ r = sanei_genesys_get_address (reg, 0x67);
+ r->value = 0x3f;
+
+ r = sanei_genesys_get_address (reg, 0x68);
+ r->value = 0x3f;
+
+ r = sanei_genesys_get_address (reg, 0x21);
+ r->value = 0;
+
+ r = sanei_genesys_get_address (reg, 0x24);
+ r->value = 0;
+
+ r = sanei_genesys_get_address (reg, 0x69);
+ r->value = 0;
+
+ r = sanei_genesys_get_address (reg, 0x6a);
+ r->value = (fast_slope_steps >> 1) + (fast_slope_steps & 1);
+
+ r = sanei_genesys_get_address (reg, 0x5f);
+ r->value = (fast_slope_steps >> 1) + (fast_slope_steps & 1);
+
+
+ DBG (DBG_proc, "gl841_init_motor_regs : completed. \n");
+
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl841_init_motor_regs_scan(Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ unsigned int scan_exposure_time,/*pixel*/
+ float scan_yres,/*dpi, motor resolution*/
+ int scan_step_type,/*0: full, 1: half, 2: quarter*/
+ unsigned int scan_lines,/*lines, scan resolution*/
+ unsigned int scan_dummy,
+/*number of scan lines to add in a scan_lines line*/
+ unsigned int feed_steps,/*1/base_ydpi*/
+/*maybe float for half/quarter step resolution?*/
+ int scan_power_mode,
+ unsigned int flags)
+{
+ SANE_Status status;
+ unsigned int fast_exposure;
+ int use_fast_fed = 0;
+ unsigned int fast_time;
+ unsigned int slow_time;
+ uint16_t slow_slope_table[256];
+ uint16_t fast_slope_table[256];
+ uint16_t back_slope_table[256];
+ unsigned int slow_slope_time;
+ unsigned int fast_slope_time;
+ unsigned int slow_slope_steps = 0;
+ unsigned int fast_slope_steps = 0;
+ unsigned int back_slope_steps = 0;
+ unsigned int feedl;
+ Genesys_Register_Set * r;
+ unsigned int min_restep = 0x20;
+ uint32_t z1, z2;
+
+ DBG (DBG_proc, "gl841_init_motor_regs_scan : scan_exposure_time=%d, "
+ "scan_yres=%g, scan_step_type=%d, scan_lines=%d, scan_dummy=%d, "
+ "feed_steps=%d, scan_power_mode=%d, flags=%x\n",
+ scan_exposure_time,
+ scan_yres,
+ scan_step_type,
+ scan_lines,
+ scan_dummy,
+ feed_steps,
+ scan_power_mode,
+ flags);
+
+ fast_exposure = sanei_genesys_exposure_time2(
+ dev,
+ dev->motor.base_ydpi / 4,
+ 0,/*step_type*/
+ 0,/*last used pixel*/
+ 0,
+ scan_power_mode);
+
+ DBG (DBG_info, "gl841_init_motor_regs_scan : fast_exposure=%d pixels\n",
+ fast_exposure);
+
+
+ memset(slow_slope_table,0xff,512);
+
+ gl841_send_slope_table (dev, 0, slow_slope_table, 256);
+ gl841_send_slope_table (dev, 1, slow_slope_table, 256);
+ gl841_send_slope_table (dev, 2, slow_slope_table, 256);
+ gl841_send_slope_table (dev, 3, slow_slope_table, 256);
+ gl841_send_slope_table (dev, 4, slow_slope_table, 256);
+
+
+/*
+ we calculate both tables for SCAN. the fast slope step count depends on
+ how many steps we need for slow acceleration and how much steps we are
+ allowed to use.
+ */
+ slow_slope_time = sanei_genesys_create_slope_table3 (
+ dev,
+ slow_slope_table, 256,
+ 256,
+ scan_step_type,
+ scan_exposure_time,
+ scan_yres,
+ &slow_slope_steps,
+ NULL,
+ scan_power_mode);
+
+ sanei_genesys_create_slope_table3 (
+ dev,
+ back_slope_table, 256,
+ 256,
+ scan_step_type,
+ 0,
+ scan_yres,
+ &back_slope_steps,
+ NULL,
+ scan_power_mode);
+
+ if (feed_steps < (slow_slope_steps >> scan_step_type)) {
+ /*TODO: what should we do here?? go back to exposure calculation?*/
+ feed_steps = slow_slope_steps >> scan_step_type;
+ }
+
+ if (feed_steps > fast_slope_steps*2 -
+ (slow_slope_steps >> scan_step_type))
+ fast_slope_steps = 256;
+ else
+/* we need to shorten fast_slope_steps here. */
+ fast_slope_steps = (feed_steps -
+ (slow_slope_steps >> scan_step_type))/2;
+
+ DBG(DBG_info,"gl841_init_motor_regs_scan: Maximum allowed slope steps for fast slope: %d\n",fast_slope_steps);
+
+ fast_slope_time = sanei_genesys_create_slope_table3 (
+ dev,
+ fast_slope_table, 256,
+ fast_slope_steps,
+ 0,
+ fast_exposure,
+ dev->motor.base_ydpi / 4,
+ &fast_slope_steps,
+ &fast_exposure,
+ scan_power_mode);
+
+ if (dev->model->gpo_type == GPO_XP300 || dev->model->gpo_type == GPO_DP685)
+ {
+ /* quirk: looks like at least this scanner is unable to use
+ 2-feed mode */
+ use_fast_fed = 0;
+ }
+ else if (feed_steps < fast_slope_steps*2 + (slow_slope_steps >> scan_step_type)) {
+ use_fast_fed = 0;
+ DBG(DBG_info,"gl841_init_motor_regs_scan: feed too short, slow move forced.\n");
+ } else {
+/* for deciding whether we should use fast mode we need to check how long we
+ need for (fast)accelerating, moving, decelerating, (TODO: stopping?)
+ (slow)accelerating again versus (slow)accelerating and moving. we need
+ fast and slow tables here.
+*/
+/*NOTE: scan_exposure_time is per scan_yres*/
+/*NOTE: fast_exposure is per base_ydpi/4*/
+/*we use full steps as base unit here*/
+ fast_time =
+ fast_exposure / 4 *
+ (feed_steps - fast_slope_steps*2 -
+ (slow_slope_steps >> scan_step_type))
+ + fast_slope_time*2 + slow_slope_time;
+ slow_time =
+ (scan_exposure_time * scan_yres) / dev->motor.base_ydpi *
+ (feed_steps - (slow_slope_steps >> scan_step_type))
+ + slow_slope_time;
+
+ DBG(DBG_info,"gl841_init_motor_regs_scan: Time for slow move: %d\n",
+ slow_time);
+ DBG(DBG_info,"gl841_init_motor_regs_scan: Time for fast move: %d\n",
+ fast_time);
+
+ use_fast_fed = fast_time < slow_time;
+ }
+
+ if (use_fast_fed)
+ feedl = feed_steps - fast_slope_steps*2 -
+ (slow_slope_steps >> scan_step_type);
+ else
+ if ((feed_steps << scan_step_type) < slow_slope_steps)
+ feedl = 0;
+ else
+ feedl = (feed_steps << scan_step_type) - slow_slope_steps;
+ DBG(DBG_info,"gl841_init_motor_regs_scan: Decided to use %s mode\n",
+ use_fast_fed?"fast feed":"slow feed");
+
+/* all needed slopes available. we did even decide which mode to use.
+ what next?
+ - transfer slopes
+SCAN:
+flags \ use_fast_fed ! 0 1
+------------------------\--------------------
+ 0 ! 0,1,2 0,1,2,3
+MOTOR_FLAG_AUTO_GO_HOME ! 0,1,2,4 0,1,2,3,4
+OFF: none
+FEED: 3
+GO_HOME: 3
+HOME_FREE: 3
+ - setup registers
+ * slope specific registers (already done)
+ * DECSEL for HOME_FREE/GO_HOME/SCAN
+ * FEEDL
+ * MTRREV
+ * MTRPWR
+ * FASTFED
+ * STEPSEL
+ * MTRPWM
+ * FSTPSEL
+ * FASTPWM
+ * HOMENEG
+ * BWDSTEP
+ * FWDSTEP
+ * Z1
+ * Z2
+ */
+
+ r = sanei_genesys_get_address (reg, 0x3d);
+ r->value = (feedl >> 16) & 0xf;
+ r = sanei_genesys_get_address (reg, 0x3e);
+ r->value = (feedl >> 8) & 0xff;
+ r = sanei_genesys_get_address (reg, 0x3f);
+ r->value = feedl & 0xff;
+ r = sanei_genesys_get_address (reg, 0x5e);
+ r->value &= ~0xe0;
+
+ r = sanei_genesys_get_address (reg, 0x25);
+ r->value = (scan_lines >> 16) & 0xf;
+ r = sanei_genesys_get_address (reg, 0x26);
+ r->value = (scan_lines >> 8) & 0xff;
+ r = sanei_genesys_get_address (reg, 0x27);
+ r->value = scan_lines & 0xff;
+
+ r = sanei_genesys_get_address (reg, 0x02);
+ r->value &= ~0x01; /*LONGCURV OFF*/
+ r->value &= ~0x80; /*NOT_HOME OFF*/
+ r->value |= 0x10;
+
+ r->value &= ~0x06;
+
+ if (use_fast_fed)
+ r->value |= 0x08;
+ else
+ r->value &= ~0x08;
+
+ if (flags & MOTOR_FLAG_AUTO_GO_HOME)
+ r->value |= 0x20;
+ else
+ r->value &= ~0x20;
+
+ if (flags & MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE)
+ r->value |= 0x40;
+ else
+ r->value &= ~0x40;
+
+ status = gl841_send_slope_table (dev, 0, slow_slope_table, 256);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ status = gl841_send_slope_table (dev, 1, back_slope_table, 256);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ status = gl841_send_slope_table (dev, 2, slow_slope_table, 256);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ if (use_fast_fed) {
+ status = gl841_send_slope_table (dev, 3, fast_slope_table, 256);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+ }
+
+ if (flags & MOTOR_FLAG_AUTO_GO_HOME){
+ status = gl841_send_slope_table (dev, 4, fast_slope_table, 256);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+ }
+
+
+/* now reg 0x21 and 0x24 are available, we can calculate reg 0x22 and 0x23,
+ reg 0x60-0x62 and reg 0x63-0x65
+ rule:
+ 2*STEPNO+FWDSTEP=2*FASTNO+BWDSTEP
+*/
+/* steps of table 0*/
+ if (min_restep < slow_slope_steps*2+2)
+ min_restep = slow_slope_steps*2+2;
+/* steps of table 1*/
+ if (min_restep < back_slope_steps*2+2)
+ min_restep = back_slope_steps*2+2;
+/* steps of table 0*/
+ r = sanei_genesys_get_address (reg, 0x22);
+ r->value = min_restep - slow_slope_steps*2;
+/* steps of table 1*/
+ r = sanei_genesys_get_address (reg, 0x23);
+ r->value = min_restep - back_slope_steps*2;
+
+/*
+ for z1/z2:
+ in dokumentation mentioned variables a-d:
+ a = time needed for acceleration, table 1
+ b = time needed for reg 0x1f... wouldn't that be reg0x1f*exposure_time?
+ c = time needed for acceleration, table 1
+ d = time needed for reg 0x22... wouldn't that be reg0x22*exposure_time?
+ z1 = (c+d-1) % exposure_time
+ z2 = (a+b-1) % exposure_time
+*/
+/* i don't see any effect of this. i can only guess that this will enhance
+ sub-pixel accuracy
+ z1 = (slope_0_time-1) % exposure_time;
+ z2 = (slope_0_time-1) % exposure_time;
+*/
+ z1 = z2 = 0;
+
+ DBG (DBG_info, "gl841_init_motor_regs_scan: z1 = %d\n", z1);
+ DBG (DBG_info, "gl841_init_motor_regs_scan: z2 = %d\n", z2);
+ r = sanei_genesys_get_address (reg, 0x60);
+ r->value = ((z1 >> 16) & 0xff);
+ r = sanei_genesys_get_address (reg, 0x61);
+ r->value = ((z1 >> 8) & 0xff);
+ r = sanei_genesys_get_address (reg, 0x62);
+ r->value = (z1 & 0xff);
+ r = sanei_genesys_get_address (reg, 0x63);
+ r->value = ((z2 >> 16) & 0xff);
+ r = sanei_genesys_get_address (reg, 0x64);
+ r->value = ((z2 >> 8) & 0xff);
+ r = sanei_genesys_get_address (reg, 0x65);
+ r->value = (z2 & 0xff);
+
+ r = sanei_genesys_get_address (reg, 0x1e);
+ r->value &= 0xf0; /* 0 dummy lines */
+ r->value |= scan_dummy; /* dummy lines */
+
+ r = sanei_genesys_get_address (reg, 0x67);
+ r->value = 0x3f | (scan_step_type << 6);
+
+ r = sanei_genesys_get_address (reg, 0x68);
+ r->value = 0x3f;
+
+ r = sanei_genesys_get_address (reg, 0x21);
+ r->value = (slow_slope_steps >> 1) + (slow_slope_steps & 1);
+
+ r = sanei_genesys_get_address (reg, 0x24);
+ r->value = (back_slope_steps >> 1) + (back_slope_steps & 1);
+
+ r = sanei_genesys_get_address (reg, 0x69);
+ r->value = (slow_slope_steps >> 1) + (slow_slope_steps & 1);
+
+ r = sanei_genesys_get_address (reg, 0x6a);
+ r->value = (fast_slope_steps >> 1) + (fast_slope_steps & 1);
+
+ r = sanei_genesys_get_address (reg, 0x5f);
+ r->value = (fast_slope_steps >> 1) + (fast_slope_steps & 1);
+
+
+ DBG (DBG_proc, "gl841_init_motor_regs_scan : completed. \n");
+
+ return SANE_STATUS_GOOD;
+}
+
+static int
+gl841_get_dpihw(Genesys_Device * dev)
+{
+ Genesys_Register_Set * r;
+ r = sanei_genesys_get_address (dev->reg, 0x05);
+ if ((r->value & REG05_DPIHW) == REG05_DPIHW_600)
+ return 600;
+ if ((r->value & REG05_DPIHW) == REG05_DPIHW_1200)
+ return 1200;
+ if ((r->value & REG05_DPIHW) == REG05_DPIHW_2400)
+ return 2400;
+ return 0;
+}
+
+static SANE_Status
+gl841_init_optical_regs_off(Genesys_Register_Set * reg)
+{
+ Genesys_Register_Set * r;
+
+ DBGSTART;
+
+ r = sanei_genesys_get_address (reg, 0x01);
+ r->value &= ~REG01_SCAN;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl841_init_optical_regs_scan(Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ unsigned int exposure_time,
+ unsigned int used_res,
+ unsigned int start,
+ unsigned int pixels,
+ int channels,
+ int depth,
+ SANE_Bool half_ccd,
+ int color_filter,
+ int flags
+ )
+{
+ unsigned int words_per_line;
+ unsigned int end;
+ unsigned int dpiset;
+ unsigned int i;
+ Genesys_Register_Set * r;
+ SANE_Status status;
+
+ DBG (DBG_proc, "gl841_init_optical_regs_scan : exposure_time=%d, "
+ "used_res=%d, start=%d, pixels=%d, channels=%d, depth=%d, "
+ "half_ccd=%d, flags=%x\n",
+ exposure_time,
+ used_res,
+ start,
+ pixels,
+ channels,
+ depth,
+ half_ccd,
+ flags);
+
+ end = start + pixels;
+
+ status = gl841_set_fe (dev, AFE_SET);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_init_optical_regs_scan: failed to set frontend: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* adjust used_res for chosen dpihw */
+ used_res = used_res * gl841_get_dpihw(dev) / dev->sensor.optical_res;
+
+/*
+ with half_ccd the optical resolution of the ccd is halfed. We don't apply this
+ to dpihw, so we need to double dpiset.
+
+ For the scanner only the ratio of dpiset and dpihw is of relevance to scale
+ down properly.
+*/
+ if (half_ccd)
+ dpiset = used_res * 2;
+ else
+ dpiset = used_res;
+
+ if (dev->model->gpo_type == GPO_CANONLIDE35)
+ {
+/* gpio part.*/
+ r = sanei_genesys_get_address (reg, REG6C);
+ if (half_ccd)
+ r->value &= ~0x80;
+ else
+ r->value |= 0x80;
+ }
+
+ /* enable shading */
+ r = sanei_genesys_get_address (reg, 0x01);
+ r->value |= REG01_SCAN;
+ if ((flags & OPTICAL_FLAG_DISABLE_SHADING) ||
+ (dev->model->flags & GENESYS_FLAG_NO_CALIBRATION))
+ r->value &= ~REG01_DVDSET;
+ else
+ r->value |= REG01_DVDSET;
+
+ /* average looks better than deletion, and we are already set up to
+ use one of the average enabled resolutions
+ */
+ r = sanei_genesys_get_address (reg, 0x03);
+ r->value |= REG03_AVEENB;
+ if (flags & OPTICAL_FLAG_DISABLE_LAMP)
+ r->value &= ~REG03_LAMPPWR;
+ else
+ r->value |= REG03_LAMPPWR;
+
+ /* exposure times */
+ r = sanei_genesys_get_address (reg, 0x10);
+ for (i = 0; i < 6; i++, r++) {
+ if (flags & OPTICAL_FLAG_DISABLE_LAMP)
+ r->value = 0x01;/* 0x0101 is as off as possible */
+ else
+ { /* EXP[R,G,B] only matter for CIS scanners */
+ if (dev->sensor.regs_0x10_0x1d[i] == 0x00)
+ r->value = 0x01; /*0x00 will not be accepted*/
+ else
+ r->value = dev->sensor.regs_0x10_0x1d[i];
+ }
+ }
+
+ r = sanei_genesys_get_address (reg, 0x19);
+ if (flags & OPTICAL_FLAG_DISABLE_LAMP)
+ r->value = 0xff;
+ else
+ r->value = 0x50;
+
+ /* BW threshold */
+ r = sanei_genesys_get_address (reg, 0x2e);
+ r->value = dev->settings.threshold;
+ r = sanei_genesys_get_address (reg, 0x2f);
+ r->value = dev->settings.threshold;
+
+
+ /* monochrome / color scan */
+ r = sanei_genesys_get_address (reg, 0x04);
+ switch (depth) {
+ case 1:
+ r->value &= ~REG04_BITSET;
+ r->value |= REG04_LINEART;
+ break;
+ case 8:
+ r->value &= ~(REG04_LINEART | REG04_BITSET);
+ break;
+ case 16:
+ r->value &= ~REG04_LINEART;
+ r->value |= REG04_BITSET;
+ break;
+ }
+
+ r->value &= ~(REG04_FILTER | REG04_AFEMOD);
+ if (channels == 1)
+ {
+ switch (color_filter)
+ {
+ case 0:
+ r->value |= 0x14; /* red filter */
+ break;
+ case 2:
+ r->value |= 0x1c; /* blue filter */
+ break;
+ default:
+ r->value |= 0x18; /* green filter */
+ break;
+ }
+ }
+ else
+ {
+ if (dev->model->ccd_type == CCD_PLUSTEK_3600)
+ {
+ r->value |= 0x22; /* slow color pixel by pixel */
+ }
+ else
+ {
+ r->value |= 0x10; /* color pixel by pixel */
+ }
+ }
+
+ /* CIS scanners can do true gray by setting LEDADD */
+ if (dev->model->is_cis == SANE_TRUE)
+ {
+ r = sanei_genesys_get_address (reg, 0x87);
+ r->value &= ~REG87_LEDADD;
+ /* we set up LEDADD only when asked */
+ if (channels==1 && (flags & OPTICAL_FLAG_ENABLE_LEDADD))
+ {
+ r->value |= REG87_LEDADD;
+ }
+ }
+
+ /* enable gamma tables */
+ r = sanei_genesys_get_address (reg, 0x05);
+ if (flags & OPTICAL_FLAG_DISABLE_GAMMA)
+ r->value &= ~REG05_GMMENB;
+ else
+ r->value |= REG05_GMMENB;
+
+ /* sensor parameters */
+ sanei_gl841_setup_sensor (dev, dev->reg, 1, half_ccd);
+
+ r = sanei_genesys_get_address (reg, 0x29);
+ r->value = 255; /*<<<"magic" number, only suitable for cis*/
+
+ r = sanei_genesys_get_address (reg, 0x2c);
+ r->value = HIBYTE (dpiset);
+ r = sanei_genesys_get_address (reg, 0x2d);
+ r->value = LOBYTE (dpiset);
+
+ r = sanei_genesys_get_address (reg, 0x30);
+ r->value = HIBYTE (start);
+ r = sanei_genesys_get_address (reg, 0x31);
+ r->value = LOBYTE (start);
+ r = sanei_genesys_get_address (reg, 0x32);
+ r->value = HIBYTE (end);
+ r = sanei_genesys_get_address (reg, 0x33);
+ r->value = LOBYTE (end);
+
+/* words(16bit) before gamma, conversion to 8 bit or lineart*/
+ words_per_line = (pixels * dpiset) / gl841_get_dpihw(dev);
+
+ words_per_line *= channels;
+
+ if (depth == 1)
+ words_per_line = (words_per_line >> 3) + ((words_per_line & 7)?1:0);
+ else
+ words_per_line *= depth / 8;
+
+ dev->wpl = words_per_line;
+ dev->bpl = words_per_line;
+
+ r = sanei_genesys_get_address (reg, 0x35);
+ r->value = LOBYTE (HIWORD (words_per_line));
+ r = sanei_genesys_get_address (reg, 0x36);
+ r->value = HIBYTE (LOWORD (words_per_line));
+ r = sanei_genesys_get_address (reg, 0x37);
+ r->value = LOBYTE (LOWORD (words_per_line));
+
+ r = sanei_genesys_get_address (reg, 0x38);
+ r->value = HIBYTE (exposure_time);
+ r = sanei_genesys_get_address (reg, 0x39);
+ r->value = LOBYTE (exposure_time);
+
+ r = sanei_genesys_get_address (reg, 0x34);
+ r->value = dev->sensor.dummy_pixel;
+
+ DBG (DBG_proc, "gl841_init_optical_regs_scan : completed. \n");
+ return SANE_STATUS_GOOD;
+}
+
+
+static int
+gl841_get_led_exposure(Genesys_Device * dev)
+{
+ int d,r,g,b,m;
+ if (!dev->model->is_cis)
+ return 0;
+ d = dev->reg[reg_0x19].value;
+ r = dev->sensor.regs_0x10_0x1d[1] | (dev->sensor.regs_0x10_0x1d[0] << 8);
+ g = dev->sensor.regs_0x10_0x1d[3] | (dev->sensor.regs_0x10_0x1d[2] << 8);
+ b = dev->sensor.regs_0x10_0x1d[5] | (dev->sensor.regs_0x10_0x1d[4] << 8);
+
+ m = r;
+ if (m < g)
+ m = g;
+ if (m < b)
+ m = b;
+
+ return m + d;
+}
+
+/* set up registers for an actual scan
+ *
+ * this function sets up the scanner to scan in normal or single line mode
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl841_init_scan_regs (Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ float xres,/*dpi*/
+ float yres,/*dpi*/
+ float startx,/*optical_res, from dummy_pixel+1*/
+ float starty,/*base_ydpi, from home!*/
+ float pixels,
+ float lines,
+ unsigned int depth,
+ unsigned int channels,
+ int color_filter,
+ unsigned int flags
+ )
+{
+ int used_res;
+ int start, used_pixels;
+ int bytes_per_line;
+ int move;
+ unsigned int lincnt;
+ int exposure_time, exposure_time2, led_exposure;
+ int i;
+ int stagger;
+
+ int slope_dpi = 0;
+ int dummy = 0;
+ int scan_step_type = 1;
+ int scan_power_mode = 0;
+ int max_shift;
+ size_t requested_buffer_size, read_buffer_size;
+
+ SANE_Bool half_ccd; /* false: full CCD res is used, true, half max CCD res is used */
+ int optical_res;
+ SANE_Status status;
+
+ DBG (DBG_info,
+ "gl841_init_scan_regs settings:\n"
+ "Resolution : %gDPI/%gDPI\n"
+ "Lines : %g\n"
+ "PPL : %g\n"
+ "Startpos : %g/%g\n"
+ "Depth/Channels: %u/%u\n"
+ "Flags : %x\n\n",
+ xres, yres, lines, pixels,
+ startx, starty,
+ depth, channels,
+ flags);
+
+/*
+results:
+
+for scanner:
+half_ccd
+start
+end
+dpiset
+exposure_time
+dummy
+z1
+z2
+
+for ordered_read:
+ dev->words_per_line
+ dev->read_factor
+ dev->requested_buffer_size
+ dev->read_buffer_size
+ dev->read_pos
+ dev->read_bytes_in_buffer
+ dev->read_bytes_left
+ dev->max_shift
+ dev->stagger
+
+independent of our calculated values:
+ dev->total_bytes_read
+ dev->bytes_to_read
+ */
+
+/* half_ccd */
+ /* we have 2 domains for ccd: xres below or above half ccd max dpi */
+ if (dev->sensor.optical_res < 2 * xres ||
+ !(dev->model->flags & GENESYS_FLAG_HALF_CCD_MODE)) {
+ half_ccd = SANE_FALSE;
+ } else {
+ half_ccd = SANE_TRUE;
+ }
+
+/* optical_res */
+
+ optical_res = dev->sensor.optical_res;
+ if (half_ccd)
+ optical_res /= 2;
+
+/* stagger */
+
+ if ((!half_ccd) && (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE))
+ stagger = (4 * yres) / dev->motor.base_ydpi;
+ else
+ stagger = 0;
+ DBG (DBG_info, "gl841_init_scan_regs : stagger=%d lines\n",
+ stagger);
+
+/* used_res */
+ i = optical_res / xres;
+
+/* gl841 supports 1/1 1/2 1/3 1/4 1/5 1/6 1/8 1/10 1/12 1/15 averaging */
+
+ if (i < 2 || (flags & SCAN_FLAG_USE_OPTICAL_RES)) /* optical_res >= xres > optical_res/2 */
+ used_res = optical_res;
+ else if (i < 3) /* optical_res/2 >= xres > optical_res/3 */
+ used_res = optical_res/2;
+ else if (i < 4) /* optical_res/3 >= xres > optical_res/4 */
+ used_res = optical_res/3;
+ else if (i < 5) /* optical_res/4 >= xres > optical_res/5 */
+ used_res = optical_res/4;
+ else if (i < 6) /* optical_res/5 >= xres > optical_res/6 */
+ used_res = optical_res/5;
+ else if (i < 8) /* optical_res/6 >= xres > optical_res/8 */
+ used_res = optical_res/6;
+ else if (i < 10) /* optical_res/8 >= xres > optical_res/10 */
+ used_res = optical_res/8;
+ else if (i < 12) /* optical_res/10 >= xres > optical_res/12 */
+ used_res = optical_res/10;
+ else if (i < 15) /* optical_res/12 >= xres > optical_res/15 */
+ used_res = optical_res/12;
+ else
+ used_res = optical_res/15;
+
+ /* compute scan parameters values */
+ /* pixels are allways given at half or full CCD optical resolution */
+ /* use detected left margin and fixed value */
+/* start */
+ /* add x coordinates */
+ start =
+ ((dev->sensor.CCD_start_xoffset + startx) * used_res) /
+ dev->sensor.optical_res;
+
+/* needs to be aligned for used_res */
+ start = (start * optical_res) / used_res;
+
+ start += dev->sensor.dummy_pixel + 1;
+
+ if (stagger > 0)
+ start |= 1;
+
+ /* compute correct pixels number */
+/* pixels */
+ used_pixels =
+ (pixels * optical_res) / xres;
+
+ /* round up pixels number if needed */
+ if (used_pixels * xres < pixels * optical_res)
+ used_pixels++;
+
+/* dummy */
+ /* dummy lines: may not be usefull, for instance 250 dpi works with 0 or 1
+ dummy line. Maybe the dummy line adds correctness since the motor runs
+ slower (higher dpi)
+ */
+/* for cis this creates better aligned color lines:
+dummy \ scanned lines
+ 0: R G B R ...
+ 1: R G B - R ...
+ 2: R G B - - R ...
+ 3: R G B - - - R ...
+ 4: R G B - - - - R ...
+ 5: R G B - - - - - R ...
+ 6: R G B - - - - - - R ...
+ 7: R G B - - - - - - - R ...
+ 8: R G B - - - - - - - - R ...
+ 9: R G B - - - - - - - - - R ...
+ 10: R G B - - - - - - - - - - R ...
+ 11: R G B - - - - - - - - - - - R ...
+ 12: R G B - - - - - - - - - - - - R ...
+ 13: R G B - - - - - - - - - - - - - R ...
+ 14: R G B - - - - - - - - - - - - - - R ...
+ 15: R G B - - - - - - - - - - - - - - - R ...
+ -- pierre
+ */
+ dummy = 0;
+
+/* slope_dpi */
+/* cis color scan is effectively a gray scan with 3 gray lines per color
+ line and a FILTER of 0 */
+ if (dev->model->is_cis)
+ slope_dpi = yres*channels;
+ else
+ slope_dpi = yres;
+
+ slope_dpi = slope_dpi * (1 + dummy);
+
+/* scan_step_type */
+/* Try to do at least 4 steps per line. if that is impossible we will have to
+ live with that
+ */
+ if (yres*4 < dev->motor.base_ydpi
+ || dev->motor.max_step_type <= 0)
+ scan_step_type = 0;
+ else if (yres*4 < dev->motor.base_ydpi*2
+ || dev->motor.max_step_type <= 1)
+ scan_step_type = 1;
+ else
+ scan_step_type = 2;
+
+/* exposure_time */
+ led_exposure = gl841_get_led_exposure(dev);
+
+ exposure_time = sanei_genesys_exposure_time2(
+ dev,
+ slope_dpi,
+ scan_step_type,
+ start+used_pixels,/*+tgtime? currently done in sanei_genesys_exposure_time2 with tgtime = 32 pixel*/
+ led_exposure,
+ scan_power_mode);
+
+ while(scan_power_mode + 1 < dev->motor.power_mode_count) {
+ exposure_time2 = sanei_genesys_exposure_time2(
+ dev,
+ slope_dpi,
+ scan_step_type,
+ start+used_pixels,/*+tgtime? currently done in sanei_genesys_exposure_time2 with tgtime = 32 pixel*/
+ led_exposure,
+ scan_power_mode + 1);
+ if (exposure_time < exposure_time2)
+ break;
+ exposure_time = exposure_time2;
+ scan_power_mode++;
+ }
+
+
+ DBG (DBG_info, "gl841_init_scan_regs : exposure_time=%d pixels\n",
+ exposure_time);
+
+/*** optical parameters ***/
+ /* in case of dynamic lineart, we use an internal 8 bit gray scan
+ * to generate 1 lineart data */
+ if(flags & SCAN_FLAG_DYNAMIC_LINEART)
+ {
+ depth=8;
+ }
+ if (depth == 16)
+ flags |= SCAN_FLAG_DISABLE_GAMMA;
+
+ status = gl841_init_optical_regs_scan(dev,
+ reg,
+ exposure_time,
+ used_res,
+ start,
+ used_pixels,
+ channels,
+ depth,
+ half_ccd,
+ color_filter,
+ ((flags & SCAN_FLAG_DISABLE_SHADING)?
+ OPTICAL_FLAG_DISABLE_SHADING:0) |
+ ((flags & SCAN_FLAG_DISABLE_GAMMA)?
+ OPTICAL_FLAG_DISABLE_GAMMA:0) |
+ ((flags & SCAN_FLAG_DISABLE_LAMP)?
+ OPTICAL_FLAG_DISABLE_LAMP:0)
+ );
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+/*** motor parameters ***/
+
+ /* scanned area must be enlarged by max color shift needed */
+ max_shift=sanei_genesys_compute_max_shift(dev,channels,yres,flags);
+
+ /* lincnt */
+ lincnt = lines + max_shift + stagger;
+
+ /* add tl_y to base movement */
+ move = starty;
+ DBG (DBG_info, "gl841_init_scan_regs: move=%d steps\n", move);
+
+ /* subtract current head position */
+ move -= dev->scanhead_position_in_steps;
+ DBG (DBG_info, "gl841_init_scan_regs: move=%d steps\n", move);
+
+ if (move < 0)
+ move = 0;
+
+ /* round it */
+/* the move is not affected by dummy -- pierre */
+/* move = ((move + dummy) / (dummy + 1)) * (dummy + 1);
+ DBG (DBG_info, "gl841_init_scan_regs: move=%d steps\n", move);*/
+
+ if (flags & SCAN_FLAG_SINGLE_LINE)
+ status = gl841_init_motor_regs_off(reg, dev->model->is_cis?lincnt*channels:lincnt);
+ else
+ status = gl841_init_motor_regs_scan(dev,
+ reg,
+ exposure_time,
+ slope_dpi,
+ scan_step_type,
+ dev->model->is_cis?lincnt*channels:lincnt,
+ dummy,
+ move,
+ scan_power_mode,
+ (flags & SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE)?
+ MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE:0
+ );
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+
+ /*** prepares data reordering ***/
+
+/* words_per_line */
+ bytes_per_line = (used_pixels * used_res) / optical_res;
+ bytes_per_line = (bytes_per_line * channels * depth) / 8;
+
+ requested_buffer_size = 8 * bytes_per_line;
+ /* we must use a round number of bytes_per_line */
+ if (requested_buffer_size > BULKIN_MAXSIZE)
+ requested_buffer_size =
+ (BULKIN_MAXSIZE / bytes_per_line) * bytes_per_line;
+
+ read_buffer_size =
+ 2 * requested_buffer_size +
+ ((max_shift + stagger) * used_pixels * channels * depth) / 8;
+
+ RIE(sanei_genesys_buffer_free(&(dev->read_buffer)));
+ RIE(sanei_genesys_buffer_alloc(&(dev->read_buffer), read_buffer_size));
+
+ RIE(sanei_genesys_buffer_free(&(dev->lines_buffer)));
+ RIE(sanei_genesys_buffer_alloc(&(dev->lines_buffer), read_buffer_size));
+
+ RIE(sanei_genesys_buffer_free(&(dev->shrink_buffer)));
+ RIE(sanei_genesys_buffer_alloc(&(dev->shrink_buffer),
+ requested_buffer_size));
+
+ RIE(sanei_genesys_buffer_free(&(dev->out_buffer)));
+ RIE(sanei_genesys_buffer_alloc(&(dev->out_buffer),
+ (8 * dev->settings.pixels * channels * depth) / 8));
+
+
+ dev->read_bytes_left = bytes_per_line * lincnt;
+
+ DBG (DBG_info,
+ "gl841_init_scan_regs: physical bytes to read = %lu\n",
+ (u_long) dev->read_bytes_left);
+ dev->read_active = SANE_TRUE;
+
+
+ dev->current_setup.pixels = (used_pixels * used_res)/optical_res;
+ dev->current_setup.lines = lincnt;
+ dev->current_setup.depth = depth;
+ dev->current_setup.channels = channels;
+ dev->current_setup.exposure_time = exposure_time;
+ dev->current_setup.xres = used_res;
+ dev->current_setup.yres = yres;
+ dev->current_setup.half_ccd = half_ccd;
+ dev->current_setup.stagger = stagger;
+ dev->current_setup.max_shift = max_shift + stagger;
+
+/* TODO: should this be done elsewhere? */
+ /* scan bytes to send to the frontend */
+ /* theory :
+ target_size =
+ (dev->settings.pixels * dev->settings.lines * channels * depth) / 8;
+ but it suffers from integer overflow so we do the following:
+
+ 1 bit color images store color data byte-wise, eg byte 0 contains
+ 8 bits of red data, byte 1 contains 8 bits of green, byte 2 contains
+ 8 bits of blue.
+ This does not fix the overflow, though.
+ 644mp*16 = 10gp, leading to an overflow
+ -- pierre
+ */
+
+ dev->total_bytes_read = 0;
+ if (depth == 1)
+ dev->total_bytes_to_read =
+ ((dev->settings.pixels * dev->settings.lines) / 8 +
+ (((dev->settings.pixels * dev->settings.lines)%8)?1:0)
+ ) * channels;
+ else
+ dev->total_bytes_to_read =
+ dev->settings.pixels * dev->settings.lines * channels * (depth / 8);
+
+ DBG (DBG_info, "gl841_init_scan_regs: total bytes to send = %lu\n",
+ (u_long) dev->total_bytes_to_read);
+/* END TODO */
+
+ DBG (DBG_proc, "gl841_init_scan_regs: completed\n");
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl841_calculate_current_setup (Genesys_Device * dev)
+{
+ int channels;
+ int depth;
+ int start;
+
+ float xres;/*dpi*/
+ float yres;/*dpi*/
+ float startx;/*optical_res, from dummy_pixel+1*/
+ float pixels;
+ float lines;
+
+ int used_res;
+ int used_pixels;
+ unsigned int lincnt;
+ int exposure_time, exposure_time2, led_exposure;
+ int i;
+ int stagger;
+
+ int slope_dpi = 0;
+ int dummy = 0;
+ int scan_step_type = 1;
+ int scan_power_mode = 0;
+ int max_shift;
+
+ SANE_Bool half_ccd; /* false: full CCD res is used, true, half max CCD res is used */
+ int optical_res;
+
+ DBG (DBG_info,
+ "gl841_calculate_current_setup settings:\n"
+ "Resolution: %uDPI\n"
+ "Lines : %u\n"
+ "PPL : %u\n"
+ "Startpos : %.3f/%.3f\n"
+ "Scan mode : %d\n\n",
+ dev->settings.yres, dev->settings.lines, dev->settings.pixels,
+ dev->settings.tl_x, dev->settings.tl_y, dev->settings.scan_mode);
+
+/* channels */
+ if (dev->settings.scan_mode == 4) /* single pass color */
+ channels = 3;
+ else
+ channels = 1;
+
+/* depth */
+ depth = dev->settings.depth;
+ if (dev->settings.scan_mode == 0)
+ depth = 1;
+
+/* start */
+ start = SANE_UNFIX (dev->model->x_offset);
+
+ start += dev->settings.tl_x;
+
+ start = (start * dev->sensor.optical_res) / MM_PER_INCH;
+
+
+ xres = dev->settings.xres;/*dpi*/
+ yres = dev->settings.yres;/*dpi*/
+ startx = start;/*optical_res, from dummy_pixel+1*/
+ pixels = dev->settings.pixels;
+ lines = dev->settings.lines;
+
+ DBG (DBG_info,
+ "gl841_calculate_current_setup settings:\n"
+ "Resolution : %gDPI/%gDPI\n"
+ "Lines : %g\n"
+ "PPL : %g\n"
+ "Startpos : %g\n"
+ "Depth/Channels: %u/%u\n\n",
+ xres, yres, lines, pixels,
+ startx,
+ depth, channels);
+
+/* half_ccd */
+ /* we have 2 domains for ccd: xres below or above half ccd max dpi */
+ if ((dev->sensor.optical_res < 2 * xres) ||
+ !(dev->model->flags & GENESYS_FLAG_HALF_CCD_MODE)) {
+ half_ccd = SANE_FALSE;
+ } else {
+ half_ccd = SANE_TRUE;
+ }
+
+/* optical_res */
+
+ optical_res = dev->sensor.optical_res;
+ if (half_ccd)
+ optical_res /= 2;
+
+/* stagger */
+
+ if ((!half_ccd) && (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE))
+ stagger = (4 * yres) / dev->motor.base_ydpi;
+ else
+ stagger = 0;
+ DBG (DBG_info, "gl841_calculate_current_setup: stagger=%d lines\n",
+ stagger);
+
+/* used_res */
+ i = optical_res / xres;
+
+/* gl841 supports 1/1 1/2 1/3 1/4 1/5 1/6 1/8 1/10 1/12 1/15 averaging */
+
+ if (i < 2) /* optical_res >= xres > optical_res/2 */
+ used_res = optical_res;
+ else if (i < 3) /* optical_res/2 >= xres > optical_res/3 */
+ used_res = optical_res/2;
+ else if (i < 4) /* optical_res/3 >= xres > optical_res/4 */
+ used_res = optical_res/3;
+ else if (i < 5) /* optical_res/4 >= xres > optical_res/5 */
+ used_res = optical_res/4;
+ else if (i < 6) /* optical_res/5 >= xres > optical_res/6 */
+ used_res = optical_res/5;
+ else if (i < 8) /* optical_res/6 >= xres > optical_res/8 */
+ used_res = optical_res/6;
+ else if (i < 10) /* optical_res/8 >= xres > optical_res/10 */
+ used_res = optical_res/8;
+ else if (i < 12) /* optical_res/10 >= xres > optical_res/12 */
+ used_res = optical_res/10;
+ else if (i < 15) /* optical_res/12 >= xres > optical_res/15 */
+ used_res = optical_res/12;
+ else
+ used_res = optical_res/15;
+
+ /* compute scan parameters values */
+ /* pixels are allways given at half or full CCD optical resolution */
+ /* use detected left margin and fixed value */
+/* start */
+ /* add x coordinates */
+ start =
+ ((dev->sensor.CCD_start_xoffset + startx) * used_res) /
+ dev->sensor.optical_res;
+
+/* needs to be aligned for used_res */
+ start = (start * optical_res) / used_res;
+
+ start += dev->sensor.dummy_pixel + 1;
+
+ if (stagger > 0)
+ start |= 1;
+
+ /* compute correct pixels number */
+/* pixels */
+ used_pixels =
+ (pixels * optical_res) / xres;
+
+ /* round up pixels number if needed */
+ if (used_pixels * xres < pixels * optical_res)
+ used_pixels++;
+
+/* dummy */
+ /* dummy lines: may not be usefull, for instance 250 dpi works with 0 or 1
+ dummy line. Maybe the dummy line adds correctness since the motor runs
+ slower (higher dpi)
+ */
+/* for cis this creates better aligned color lines:
+dummy \ scanned lines
+ 0: R G B R ...
+ 1: R G B - R ...
+ 2: R G B - - R ...
+ 3: R G B - - - R ...
+ 4: R G B - - - - R ...
+ 5: R G B - - - - - R ...
+ 6: R G B - - - - - - R ...
+ 7: R G B - - - - - - - R ...
+ 8: R G B - - - - - - - - R ...
+ 9: R G B - - - - - - - - - R ...
+ 10: R G B - - - - - - - - - - R ...
+ 11: R G B - - - - - - - - - - - R ...
+ 12: R G B - - - - - - - - - - - - R ...
+ 13: R G B - - - - - - - - - - - - - R ...
+ 14: R G B - - - - - - - - - - - - - - R ...
+ 15: R G B - - - - - - - - - - - - - - - R ...
+ -- pierre
+ */
+ dummy = 0;
+
+/* slope_dpi */
+/* cis color scan is effectively a gray scan with 3 gray lines per color
+ line and a FILTER of 0 */
+ if (dev->model->is_cis)
+ slope_dpi = yres*channels;
+ else
+ slope_dpi = yres;
+
+ slope_dpi = slope_dpi * (1 + dummy);
+
+/* scan_step_type */
+/* Try to do at least 4 steps per line. if that is impossible we will have to
+ live with that
+ */
+ if (yres*4 < dev->motor.base_ydpi
+ || dev->motor.max_step_type <= 0)
+ scan_step_type = 0;
+ else if (yres*4 < dev->motor.base_ydpi*2
+ || dev->motor.max_step_type <= 1)
+ scan_step_type = 1;
+ else
+ scan_step_type = 2;
+
+ led_exposure = gl841_get_led_exposure(dev);
+
+/* exposure_time */
+ exposure_time = sanei_genesys_exposure_time2(
+ dev,
+ slope_dpi,
+ scan_step_type,
+ start+used_pixels,/*+tgtime? currently done in sanei_genesys_exposure_time2 with tgtime = 32 pixel*/
+ led_exposure,
+ scan_power_mode);
+
+ while(scan_power_mode + 1 < dev->motor.power_mode_count) {
+ exposure_time2 = sanei_genesys_exposure_time2(
+ dev,
+ slope_dpi,
+ scan_step_type,
+ start+used_pixels,/*+tgtime? currently done in sanei_genesys_exposure_time2 with tgtime = 32 pixel*/
+ led_exposure,
+ scan_power_mode + 1);
+ if (exposure_time < exposure_time2)
+ break;
+ exposure_time = exposure_time2;
+ scan_power_mode++;
+ }
+
+ DBG (DBG_info, "gl841_calculate_current_setup : exposure_time=%d pixels\n",
+ exposure_time);
+
+ /* scanned area must be enlarged by max color shift needed */
+ max_shift=sanei_genesys_compute_max_shift(dev,channels,yres,0);
+
+ /* lincnt */
+ lincnt = lines + max_shift + stagger;
+
+ dev->current_setup.pixels = (used_pixels * used_res)/optical_res;
+ dev->current_setup.lines = lincnt;
+ dev->current_setup.depth = depth;
+ dev->current_setup.channels = channels;
+ dev->current_setup.exposure_time = exposure_time;
+ dev->current_setup.xres = used_res;
+ dev->current_setup.yres = yres;
+ dev->current_setup.half_ccd = half_ccd;
+ dev->current_setup.stagger = stagger;
+ dev->current_setup.max_shift = max_shift + stagger;
+
+ DBG (DBG_proc, "gl841_calculate_current_setup: completed\n");
+ return SANE_STATUS_GOOD;
+}
+
+static void
+gl841_set_motor_power (Genesys_Register_Set * regs, SANE_Bool set)
+{
+
+ DBG (DBG_proc, "gl841_set_motor_power\n");
+
+ if (set)
+ {
+ sanei_genesys_set_reg_from_set (regs, 0x02,
+ sanei_genesys_read_reg_from_set (regs,
+ 0x02) |
+ REG02_MTRPWR);
+ }
+ else
+ {
+ sanei_genesys_set_reg_from_set (regs, 0x02,
+ sanei_genesys_read_reg_from_set (regs,
+ 0x02) &
+ ~REG02_MTRPWR);
+ }
+}
+
+static void
+gl841_set_lamp_power (Genesys_Device * dev,
+ Genesys_Register_Set * regs, SANE_Bool set)
+{
+ Genesys_Register_Set * r;
+ int i;
+
+ if (set)
+ {
+ sanei_genesys_set_reg_from_set (regs, 0x03,
+ sanei_genesys_read_reg_from_set (regs,
+ 0x03) |
+ REG03_LAMPPWR);
+
+ r = sanei_genesys_get_address (regs, 0x10);
+ for (i = 0; i < 6; i++, r++) {
+ if (dev->sensor.regs_0x10_0x1d[i] == 0x00)
+ r->value = 0x01;/*0x00 will not be accepted*/
+ else
+ r->value = dev->sensor.regs_0x10_0x1d[i];
+ }
+ r = sanei_genesys_get_address (regs, 0x19);
+ r->value = 0x50;
+ }
+ else
+ {
+ sanei_genesys_set_reg_from_set (regs, 0x03,
+ sanei_genesys_read_reg_from_set (regs,
+ 0x03) &
+ ~REG03_LAMPPWR);
+
+ r = sanei_genesys_get_address (regs, 0x10);
+ for (i = 0; i < 6; i++, r++) {
+ r->value = 0x01;/* 0x0101 is as off as possible */
+ }
+ r = sanei_genesys_get_address (regs, 0x19);
+ r->value = 0xff;
+ }
+}
+
+/*for fast power saving methods only, like disabling certain amplifiers*/
+static SANE_Status
+gl841_save_power(Genesys_Device * dev, SANE_Bool enable) {
+ uint8_t val;
+
+ DBG(DBG_proc, "gl841_save_power: enable = %d\n", enable);
+
+ if (enable)
+ {
+ if (dev->model->gpo_type == GPO_CANONLIDE35)
+ {
+/* expect GPIO17 to be enabled, and GPIO9 to be disabled,
+ while GPIO8 is disabled*/
+/* final state: GPIO8 disabled, GPIO9 enabled, GPIO17 disabled,
+ GPIO18 disabled*/
+
+ sanei_genesys_read_register(dev, REG6D, &val);
+ sanei_genesys_write_register(dev, REG6D, val | 0x80);
+
+ usleep(1000);
+
+ /*enable GPIO9*/
+ sanei_genesys_read_register(dev, REG6C, &val);
+ sanei_genesys_write_register(dev, REG6C, val | 0x01);
+
+ /*disable GPO17*/
+ sanei_genesys_read_register(dev, REG6B, &val);
+ sanei_genesys_write_register(dev, REG6B, val & ~REG6B_GPO17);
+
+ /*disable GPO18*/
+ sanei_genesys_read_register(dev, REG6B, &val);
+ sanei_genesys_write_register(dev, REG6B, val & ~REG6B_GPO18);
+
+ usleep(1000);
+
+ sanei_genesys_read_register(dev, REG6D, &val);
+ sanei_genesys_write_register(dev, REG6D, val & ~0x80);
+
+ }
+ if (dev->model->gpo_type == GPO_DP685)
+ {
+ sanei_genesys_read_register(dev, REG6B, &val);
+ sanei_genesys_write_register(dev, REG6B, val & ~REG6B_GPO17);
+ dev->reg[reg_0x6b].value &= ~REG6B_GPO17;
+ dev->calib_reg[reg_0x6b].value &= ~REG6B_GPO17;
+ }
+
+ gl841_set_fe (dev, AFE_POWER_SAVE);
+
+ }
+ else
+ {
+ if (dev->model->gpo_type == GPO_CANONLIDE35)
+ {
+/* expect GPIO17 to be enabled, and GPIO9 to be disabled,
+ while GPIO8 is disabled*/
+/* final state: GPIO8 enabled, GPIO9 disabled, GPIO17 enabled,
+ GPIO18 enabled*/
+
+ sanei_genesys_read_register(dev, REG6D, &val);
+ sanei_genesys_write_register(dev, REG6D, val | 0x80);
+
+ usleep(10000);
+
+ /*disable GPIO9*/
+ sanei_genesys_read_register(dev, REG6C, &val);
+ sanei_genesys_write_register(dev, REG6C, val & ~0x01);
+
+ /*enable GPIO10*/
+ sanei_genesys_read_register(dev, REG6C, &val);
+ sanei_genesys_write_register(dev, REG6C, val | 0x02);
+
+ /*enable GPO17*/
+ sanei_genesys_read_register(dev, REG6B, &val);
+ sanei_genesys_write_register(dev, REG6B, val | REG6B_GPO17);
+ dev->reg[reg_0x6b].value |= REG6B_GPO17;
+ dev->calib_reg[reg_0x6b].value |= REG6B_GPO17;
+
+ /*enable GPO18*/
+ sanei_genesys_read_register(dev, REG6B, &val);
+ sanei_genesys_write_register(dev, REG6B, val | REG6B_GPO18);
+ dev->reg[reg_0x6b].value |= REG6B_GPO18;
+ dev->calib_reg[reg_0x6b].value |= REG6B_GPO18;
+
+ }
+ if (dev->model->gpo_type == GPO_DP665
+ || dev->model->gpo_type == GPO_DP685)
+ {
+ sanei_genesys_read_register(dev, REG6B, &val);
+ sanei_genesys_write_register(dev, REG6B, val | REG6B_GPO17);
+ dev->reg[reg_0x6b].value |= REG6B_GPO17;
+ dev->calib_reg[reg_0x6b].value |= REG6B_GPO17;
+ }
+
+ }
+
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl841_set_powersaving (Genesys_Device * dev,
+ int delay /* in minutes */ )
+{
+ SANE_Status status;
+ Genesys_Register_Set local_reg[7];
+ int rate, exposure_time, tgtime, time;
+
+ DBG (DBG_proc, "gl841_set_powersaving (delay = %d)\n", delay);
+
+ local_reg[0].address = 0x01;
+ local_reg[0].value = sanei_genesys_read_reg_from_set (dev->reg, 0x01); /* disable fastmode */
+
+ local_reg[1].address = 0x03;
+ local_reg[1].value = sanei_genesys_read_reg_from_set (dev->reg, 0x03); /* Lamp power control */
+
+ local_reg[2].address = 0x05;
+ local_reg[2].value = sanei_genesys_read_reg_from_set (dev->reg, 0x05) /*& ~REG05_BASESEL*/; /* 24 clocks/pixel */
+
+ local_reg[3].address = 0x18; /* Set CCD type */
+ local_reg[3].value = 0x00;
+
+ local_reg[4].address = 0x38; /* line period low */
+ local_reg[4].value = 0x00;
+
+ local_reg[5].address = 0x39; /* line period high */
+ local_reg[5].value = 0x00;
+
+ local_reg[6].address = 0x1c; /* period times for LPeriod, expR,expG,expB, Z1MODE, Z2MODE */
+ local_reg[6].value = sanei_genesys_read_reg_from_set (dev->reg, 0x05) & ~REG1C_TGTIME;
+
+ if (!delay)
+ local_reg[1].value = local_reg[1].value & 0xf0; /* disable lampdog and set lamptime = 0 */
+ else if (delay < 20)
+ local_reg[1].value = (local_reg[1].value & 0xf0) | 0x09; /* enable lampdog and set lamptime = 1 */
+ else
+ local_reg[1].value = (local_reg[1].value & 0xf0) | 0x0f; /* enable lampdog and set lamptime = 7 */
+
+ time = delay * 1000 * 60; /* -> msec */
+ exposure_time =
+ (uint32_t) (time * 32000.0 /
+ (24.0 * 64.0 * (local_reg[1].value & REG03_LAMPTIM) *
+ 1024.0) + 0.5);
+ /* 32000 = system clock, 24 = clocks per pixel */
+ rate = (exposure_time + 65536) / 65536;
+ if (rate > 4)
+ {
+ rate = 8;
+ tgtime = 3;
+ }
+ else if (rate > 2)
+ {
+ rate = 4;
+ tgtime = 2;
+ }
+ else if (rate > 1)
+ {
+ rate = 2;
+ tgtime = 1;
+ }
+ else
+ {
+ rate = 1;
+ tgtime = 0;
+ }
+
+ local_reg[6].value |= tgtime;
+ exposure_time /= rate;
+
+ if (exposure_time > 65535)
+ exposure_time = 65535;
+
+ local_reg[4].value = exposure_time >> 8; /* highbyte */
+ local_reg[5].value = exposure_time & 255; /* lowbyte */
+
+ status =
+ gl841_bulk_write_register (dev, local_reg,
+ sizeof (local_reg)/sizeof (local_reg[0]));
+ if (status != SANE_STATUS_GOOD)
+ DBG (DBG_error,
+ "gl841_set_powersaving: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+
+ DBG (DBG_proc, "gl841_set_powersaving: completed\n");
+ return status;
+}
+
+static SANE_Status
+gl841_start_action (Genesys_Device * dev)
+{
+ return sanei_genesys_write_register (dev, 0x0f, 0x01);
+}
+
+static SANE_Status
+gl841_stop_action (Genesys_Device * dev)
+{
+ Genesys_Register_Set local_reg[GENESYS_GL841_MAX_REGS+1];
+ SANE_Status status;
+ uint8_t val40, val;
+ unsigned int loop;
+
+ DBG (DBG_proc, "%s\n", __FUNCTION__);
+
+ status = sanei_genesys_get_status (dev, &val);
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ status = sanei_genesys_read_register(dev, 0x40, &val40);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read home sensor: %s\n",__FUNCTION__,
+ sane_strstatus (status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* only stop action if needed */
+ if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG))
+ {
+ DBG (DBG_info, "%s: already stopped\n", __FUNCTION__);
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ memcpy (local_reg, dev->reg, (GENESYS_GL841_MAX_REGS+1) * sizeof (Genesys_Register_Set));
+
+ gl841_init_optical_regs_off(local_reg);
+
+ gl841_init_motor_regs_off(local_reg,0);
+ status = gl841_bulk_write_register (dev, local_reg, GENESYS_GL841_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to bulk write registers: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* looks like writing the right registers to zero is enough to get the chip
+ out of scan mode into command mode, actually triggering(writing to
+ register 0x0f) seems to be unnecessary */
+
+ loop = 10;
+ while (loop > 0)
+ {
+ status = sanei_genesys_read_register(dev, 0x40, &val40);
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read home sensor: %s\n",__FUNCTION__,
+ sane_strstatus (status));
+ DBGCOMPLETED;
+ return status;
+ }
+
+ /* if scanner is in command mode, we are done */
+ if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG))
+ {
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ usleep(100*1000);
+ loop--;
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_IO_ERROR;
+}
+
+static SANE_Status
+gl841_get_paper_sensor(Genesys_Device * dev, SANE_Bool * paper_loaded)
+{
+ SANE_Status status;
+ uint8_t val;
+
+ status = sanei_genesys_read_register(dev, REG6D, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_get_paper_sensor: failed to read gpio: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ *paper_loaded = (val & 0x1) == 0;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl841_eject_document (Genesys_Device * dev)
+{
+ Genesys_Register_Set local_reg[GENESYS_GL841_MAX_REGS+1];
+ SANE_Status status;
+ uint8_t val;
+ SANE_Bool paper_loaded;
+ unsigned int init_steps;
+ float feed_mm;
+ int loop;
+
+ DBG (DBG_proc, "gl841_eject_document\n");
+
+ if (!dev->model->is_sheetfed == SANE_TRUE)
+ {
+ DBG (DBG_proc, "gl841_eject_document: there is no \"eject sheet\"-concept for non sheet fed\n");
+ DBG (DBG_proc, "gl841_eject_document: finished\n");
+ return SANE_STATUS_GOOD;
+ }
+
+
+ memset (local_reg, 0, sizeof (local_reg));
+ val = 0;
+
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_eject_document: failed to read status register: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl841_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_eject_document: failed to stop motor: %s\n",
+ sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ memcpy (local_reg, dev->reg, (GENESYS_GL841_MAX_REGS+1) * sizeof (Genesys_Register_Set));
+
+ gl841_init_optical_regs_off(local_reg);
+
+ gl841_init_motor_regs(dev,local_reg,
+ 65536,MOTOR_ACTION_FEED,0);
+
+ status =
+ gl841_bulk_write_register (dev, local_reg, GENESYS_GL841_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_eject_document: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl841_start_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_eject_document: failed to start motor: %s\n",
+ sane_strstatus (status));
+ gl841_stop_action (dev);
+ /* send original registers */
+ gl841_bulk_write_register (dev, dev->reg, GENESYS_GL841_MAX_REGS);
+ return status;
+ }
+
+ RIE(gl841_get_paper_sensor(dev, &paper_loaded));
+ if (paper_loaded)
+ {
+ DBG (DBG_info,
+ "gl841_eject_document: paper still loaded\n");
+ /* force document TRUE, because it is definitely present */
+ dev->document = SANE_TRUE;
+ dev->scanhead_position_in_steps = 0;
+
+ loop = 300;
+ while (loop > 0) /* do not wait longer then 30 seconds */
+ {
+
+ RIE(gl841_get_paper_sensor(dev, &paper_loaded));
+
+ if (!paper_loaded)
+ {
+ DBG (DBG_info,
+ "gl841_eject_document: reached home position\n");
+ DBG (DBG_proc, "gl841_eject_document: finished\n");
+ break;
+ }
+ usleep (100000); /* sleep 100 ms */
+ --loop;
+ }
+
+ if (loop == 0)
+ {
+ /* when we come here then the scanner needed too much time for this, so we better stop the motor */
+ gl841_stop_action (dev);
+ DBG (DBG_error,
+ "gl841_eject_document: timeout while waiting for scanhead to go home\n");
+ return SANE_STATUS_IO_ERROR;
+ }
+ }
+
+ feed_mm = SANE_UNFIX(dev->model->eject_feed);
+ if (dev->document)
+ {
+ feed_mm += SANE_UNFIX(dev->model->post_scan);
+ }
+
+ status = sanei_genesys_read_feed_steps(dev, &init_steps);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_eject_document: failed to read feed steps: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* now feed for extra <number> steps */
+ loop = 0;
+ while (loop < 300) /* do not wait longer then 30 seconds */
+ {
+ unsigned int steps;
+
+ status = sanei_genesys_read_feed_steps(dev, &steps);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_eject_document: failed to read feed steps: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_info, "gl841_eject_document: init_steps: %d, steps: %d\n",
+ init_steps, steps);
+
+ if (steps > init_steps + (feed_mm * dev->motor.base_ydpi) / MM_PER_INCH)
+ {
+ break;
+ }
+
+ usleep (100000); /* sleep 100 ms */
+ ++loop;
+ }
+
+ status = gl841_stop_action(dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_eject_document: failed to stop motor: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ dev->document = SANE_FALSE;
+
+ DBG (DBG_proc, "gl841_eject_document: finished\n");
+ return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+gl841_load_document (Genesys_Device * dev)
+{
+ SANE_Status status;
+ SANE_Bool paper_loaded;
+ int loop = 300;
+ DBG (DBG_proc, "gl841_load_document\n");
+ while (loop > 0) /* do not wait longer then 30 seconds */
+ {
+
+ RIE(gl841_get_paper_sensor(dev, &paper_loaded));
+
+ if (paper_loaded)
+ {
+ DBG (DBG_info,
+ "gl841_load_document: document inserted\n");
+
+ /* when loading OK, document is here */
+ dev->document = SANE_TRUE;
+
+ usleep (1000000); /* give user 1000ms to place document correctly */
+ break;
+ }
+ usleep (100000); /* sleep 100 ms */
+ --loop;
+ }
+
+ if (loop == 0)
+ {
+ /* when we come here then the user needed to much time for this */
+ DBG (DBG_error,
+ "gl841_load_document: timeout while waiting for document\n");
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ DBG (DBG_proc, "gl841_load_document: finished\n");
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * detects end of document and adjust current scan
+ * to take it into account
+ * used by sheetfed scanners
+ */
+static SANE_Status
+gl841_detect_document_end (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ SANE_Bool paper_loaded;
+ unsigned int scancnt = 0, lincnt, postcnt;
+ uint8_t val;
+ size_t total_bytes_to_read;
+
+ DBG (DBG_proc, "%s: begin\n", __FUNCTION__);
+
+ RIE (gl841_get_paper_sensor (dev, &paper_loaded));
+
+ /* sheetfed scanner uses home sensor as paper present */
+ if ((dev->document == SANE_TRUE) && !paper_loaded)
+ {
+ DBG (DBG_info, "%s: no more document\n", __FUNCTION__);
+ dev->document = SANE_FALSE;
+
+ /* we can't rely on total_bytes_to_read since the frontend
+ * might have been slow to read data, so we re-evaluate the
+ * amount of data to scan form the hardware settings
+ */
+ status=sanei_genesys_read_scancnt(dev,&scancnt);
+ if(status!=SANE_STATUS_GOOD)
+ {
+ dev->total_bytes_to_read = dev->total_bytes_read;
+ dev->read_bytes_left = 0;
+ DBG (DBG_proc, "%s: finished\n", __FUNCTION__);
+ return SANE_STATUS_GOOD;
+ }
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR && dev->model->is_cis)
+ {
+ scancnt/=3;
+ }
+ DBG (DBG_io, "%s: scancnt=%u lines\n",__FUNCTION__, scancnt);
+
+ RIE(sanei_genesys_read_register(dev, 0x25, &val));
+ lincnt=65536*val;
+ RIE(sanei_genesys_read_register(dev, 0x26, &val));
+ lincnt+=256*val;
+ RIE(sanei_genesys_read_register(dev, 0x27, &val));
+ lincnt+=val;
+ DBG (DBG_io, "%s: lincnt=%u lines\n",__FUNCTION__, lincnt);
+ postcnt=(SANE_UNFIX(dev->model->post_scan)/MM_PER_INCH)*dev->settings.yres;
+ DBG (DBG_io, "%s: postcnt=%u lines\n",__FUNCTION__, postcnt);
+
+ /* the current scancnt is also the final one, so we use it to
+ * compute total bytes to read. We also add the line count to eject document */
+ total_bytes_to_read=(scancnt+postcnt)*dev->wpl;
+
+ DBG (DBG_io, "%s: old total_bytes_to_read=%u\n",__FUNCTION__,(unsigned int)dev->total_bytes_to_read);
+ DBG (DBG_io, "%s: new total_bytes_to_read=%u\n",__FUNCTION__,(unsigned int)total_bytes_to_read);
+
+ /* assign new end value */
+ if(dev->total_bytes_to_read>total_bytes_to_read)
+ {
+ DBG (DBG_io, "%s: scan shorten\n",__FUNCTION__);
+ dev->total_bytes_to_read=total_bytes_to_read;
+ }
+ }
+
+ DBG (DBG_proc, "%s: finished\n", __FUNCTION__);
+ return SANE_STATUS_GOOD;
+}
+
+/* Send the low-level scan command */
+/* todo : is this that useful ? */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl841_begin_scan (Genesys_Device * dev, Genesys_Register_Set * reg,
+ SANE_Bool start_motor)
+{
+ SANE_Status status;
+ Genesys_Register_Set local_reg[4];
+
+ DBG (DBG_proc, "gl841_begin_scan\n");
+
+ local_reg[0].address = 0x03;
+ if (dev->model->ccd_type != CCD_PLUSTEK_3600)
+ {
+ local_reg[0].value = sanei_genesys_read_reg_from_set (reg, 0x03) | REG03_LAMPPWR;
+ }
+ else
+ {
+ local_reg[0].value = sanei_genesys_read_reg_from_set (reg, 0x03); /* TODO PLUSTEK_3600: why ?? */
+ }
+
+ local_reg[1].address = 0x01;
+ local_reg[1].value = sanei_genesys_read_reg_from_set (reg, 0x01) | REG01_SCAN; /* set scan bit */
+
+ local_reg[2].address = 0x0d;
+ local_reg[2].value = 0x01;
+
+ local_reg[3].address = 0x0f;
+ if (start_motor)
+ local_reg[3].value = 0x01;
+ else
+ local_reg[3].value = 0x00; /* do not start motor yet */
+
+ status =
+ gl841_bulk_write_register (dev, local_reg,
+ sizeof (local_reg)/sizeof (local_reg[0]));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_begin_scan: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_proc, "gl841_begin_scan: completed\n");
+
+ return status;
+}
+
+
+/* Send the stop scan command */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl841_end_scan (Genesys_Device * dev, Genesys_Register_Set __sane_unused__ * reg,
+ SANE_Bool check_stop)
+{
+ SANE_Status status;
+
+ DBG (DBG_proc, "gl841_end_scan (check_stop = %d)\n", check_stop);
+
+ if (dev->model->is_sheetfed == SANE_TRUE)
+ {
+ status = SANE_STATUS_GOOD;
+ }
+ else /* flat bed scanners */
+ {
+ status = gl841_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_end_scan: failed to stop: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ DBG (DBG_proc, "gl841_end_scan: completed\n");
+
+ return status;
+}
+
+/* Moves the slider to steps */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl841_feed (Genesys_Device * dev, int steps)
+{
+ Genesys_Register_Set local_reg[GENESYS_GL841_MAX_REGS+1];
+ SANE_Status status;
+ uint8_t val;
+ int loop;
+
+ DBG (DBG_proc, "gl841_feed (steps = %d)\n",
+ steps);
+
+ status =
+ gl841_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_feed: failed to stop action: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ memcpy (local_reg, dev->reg, (GENESYS_GL841_MAX_REGS+1) * sizeof (Genesys_Register_Set));
+
+ gl841_init_optical_regs_off(local_reg);
+
+ gl841_init_motor_regs(dev,local_reg,
+ steps,MOTOR_ACTION_FEED,0);
+
+ status =
+ gl841_bulk_write_register (dev, local_reg,
+ GENESYS_GL841_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_feed: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl841_start_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_feed: failed to start motor: %s\n",
+ sane_strstatus (status));
+ gl841_stop_action (dev);
+ /* send original registers */
+ gl841_bulk_write_register (dev, dev->reg,
+ GENESYS_GL841_MAX_REGS);
+ return status;
+ }
+
+ loop = 0;
+ while (loop < 300) /* do not wait longer then 30 seconds */
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_feed: failed to read home sensor: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ if (!(val & REG41_MOTORENB)) /* motor enabled */
+ {
+ DBG (DBG_proc, "gl841_feed: finished\n");
+ dev->scanhead_position_in_steps += steps;
+ return SANE_STATUS_GOOD;
+ }
+ usleep (100000); /* sleep 100 ms */
+ ++loop;
+ }
+
+ /* when we come here then the scanner needed too much time for this, so we better stop the motor */
+ gl841_stop_action (dev);
+
+ DBG (DBG_error,
+ "gl841_feed: timeout while waiting for scanhead to go home\n");
+ return SANE_STATUS_IO_ERROR;
+}
+
+/* Moves the slider to the home (top) position slowly */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl841_slow_back_home (Genesys_Device * dev, SANE_Bool wait_until_home)
+{
+ Genesys_Register_Set local_reg[GENESYS_GL841_MAX_REGS+1];
+ SANE_Status status;
+ Genesys_Register_Set *r;
+ uint8_t val;
+ int loop = 0;
+
+ DBG (DBG_proc, "gl841_slow_back_home (wait_until_home = %d)\n",
+ wait_until_home);
+
+ if (dev->model->is_sheetfed == SANE_TRUE)
+ {
+ DBG (DBG_proc, "gl841_slow_back_home: there is no \"home\"-concept for sheet fed\n");
+ DBG (DBG_proc, "gl841_slow_back_home: finished\n");
+ return SANE_STATUS_GOOD;
+ }
+
+ /* reset gpio pin */
+ if (dev->model->gpo_type == GPO_CANONLIDE35)
+ {
+ RIE (sanei_genesys_read_register (dev, REG6C, &val));
+ val = dev->gpo.value[0];
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+ }
+ gl841_save_power(dev, SANE_FALSE);
+
+ /* first read gives HOME_SENSOR true */
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl847_slow_back_home: failed to read home sensor: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+ usleep (100000); /* sleep 100 ms */
+
+ /* second is reliable */
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_slow_back_home: failed to read home sensor: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ dev->scanhead_position_in_steps = 0;
+
+ if (val & REG41_HOMESNR) /* is sensor at home? */
+ {
+ DBG (DBG_info,
+ "gl841_slow_back_home: already at home, completed\n");
+ dev->scanhead_position_in_steps = 0;
+ return SANE_STATUS_GOOD;
+ }
+
+ /* end previous scan if any */
+ r = sanei_genesys_get_address (dev->reg, REG01);
+ r->value &= ~REG01_SCAN;
+ status = sanei_genesys_write_register (dev, REG01, r->value);
+
+ /* if motor is on, stop current action */
+ if (val & REG41_MOTORENB)
+ {
+ status = gl841_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_slow_back_home: failed to stop motor: %s\n",
+ sane_strstatus (status));
+ return SANE_STATUS_IO_ERROR;
+ }
+ }
+
+ memcpy (local_reg, dev->reg, (GENESYS_GL841_MAX_REGS+1) * sizeof (Genesys_Register_Set));
+
+ gl841_init_motor_regs(dev,local_reg, 65536,MOTOR_ACTION_GO_HOME,0);
+
+ /* set up for reverse and no scan */
+ r = sanei_genesys_get_address (local_reg, REG02);
+ r->value |= REG02_MTRREV;
+ r = sanei_genesys_get_address (local_reg, REG01);
+ r->value &= ~REG01_SCAN;
+
+ RIE (gl841_bulk_write_register (dev, local_reg, GENESYS_GL841_MAX_REGS));
+
+ status = gl841_start_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_slow_back_home: failed to start motor: %s\n",
+ sane_strstatus (status));
+ gl841_stop_action (dev);
+ /* send original registers */
+ gl841_bulk_write_register (dev, dev->reg, GENESYS_GL841_MAX_REGS);
+ return status;
+ }
+
+ if (wait_until_home)
+ {
+ while (loop < 300) /* do not wait longer then 30 seconds */
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_slow_back_home: failed to read home sensor: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ if (val & REG41_HOMESNR) /* home sensor */
+ {
+ DBG (DBG_info, "gl841_slow_back_home: reached home position\n");
+ DBG (DBG_proc, "gl841_slow_back_home: finished\n");
+ return SANE_STATUS_GOOD;
+ }
+ usleep (100000); /* sleep 100 ms */
+ ++loop;
+ }
+
+ /* when we come here then the scanner needed too much time for this, so we better stop the motor */
+ gl841_stop_action (dev);
+ DBG (DBG_error,
+ "gl841_slow_back_home: timeout while waiting for scanhead to go home\n");
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ DBG (DBG_info, "gl841_slow_back_home: scanhead is still moving\n");
+ DBG (DBG_proc, "gl841_slow_back_home: finished\n");
+ return SANE_STATUS_GOOD;
+}
+
+/* Automatically set top-left edge of the scan area by scanning a 200x200 pixels
+ area at 600 dpi from very top of scanner */
+static SANE_Status
+gl841_search_start_position (Genesys_Device * dev)
+{
+ int size;
+ SANE_Status status;
+ uint8_t *data;
+ Genesys_Register_Set local_reg[GENESYS_GL841_MAX_REGS+1];
+ int steps;
+
+ int pixels = 600;
+ int dpi = 300;
+
+ DBGSTART;
+
+ memcpy (local_reg, dev->reg, (GENESYS_GL841_MAX_REGS +1) * sizeof (Genesys_Register_Set));
+
+ /* sets for a 200 lines * 600 pixels */
+ /* normal scan with no shading */
+
+ status = gl841_init_scan_regs (dev,
+ local_reg,
+ dpi,
+ dpi,
+ 0,
+ 0,/*we should give a small offset here~60 steps*/
+ 600,
+ dev->model->search_lines,
+ 8,
+ 1,
+ 1,/*green*/
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE |
+ SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE);
+ if(status!=SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to init scan registers: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* send to scanner */
+ status =
+ gl841_bulk_write_register (dev, local_reg, GENESYS_GL841_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to bulk write registers: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+
+ size = pixels * dev->model->search_lines;
+
+ data = malloc (size);
+ if (!data)
+ {
+ DBG (DBG_error,
+ "gl841_search_start_position: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ status = gl841_begin_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl841_search_start_position: failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* waits for valid data */
+ do
+ sanei_genesys_test_buffer_empty (dev, &steps);
+ while (steps);
+
+ /* now we're on target, we can read data */
+ status = sanei_genesys_read_data_from_scanner (dev, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl841_search_start_position: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("search_position.pnm", data, 8, 1, pixels,
+ dev->model->search_lines);
+
+ status = gl841_end_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl841_search_start_position: failed to end scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* update regs to copy ASIC internal state */
+ memcpy (dev->reg, local_reg, (GENESYS_GL841_MAX_REGS + 1) * sizeof (Genesys_Register_Set));
+
+/*TODO: find out where sanei_genesys_search_reference_point
+ stores information, and use that correctly*/
+ status =
+ sanei_genesys_search_reference_point (dev, data, 0, dpi, pixels,
+ dev->model->search_lines);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl841_search_start_position: failed to set search reference point: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ free (data);
+ return SANE_STATUS_GOOD;
+}
+
+/*
+ * sets up register for coarse gain calibration
+ * todo: check it for scanners using it */
+static SANE_Status
+gl841_init_regs_for_coarse_calibration (Genesys_Device * dev)
+{
+ SANE_Status status;
+ uint8_t channels;
+ uint8_t cksel;
+
+ DBG (DBG_proc, "gl841_init_regs_for_coarse_calibration\n");
+
+
+ cksel = (dev->calib_reg[reg_0x18].value & REG18_CKSEL) + 1; /* clock speed = 1..4 clocks */
+
+ /* set line size */
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR) /* single pass color */
+ channels = 3;
+ else
+ channels = 1;
+
+ status = gl841_init_scan_regs (dev,
+ dev->calib_reg,
+ dev->settings.xres,
+ dev->settings.yres,
+ 0,
+ 0,
+ dev->sensor.optical_res / cksel,
+ 20,
+ 16,
+ channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE
+ );
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_init_register_for_coarse_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_info,
+ "gl841_init_register_for_coarse_calibration: optical sensor res: %d dpi, actual res: %d\n",
+ dev->sensor.optical_res / cksel, dev->settings.xres);
+
+ status =
+ gl841_bulk_write_register (dev, dev->calib_reg, GENESYS_GL841_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_init_register_for_coarse_calibration: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_proc,
+ "gl841_init_register_for_coarse_calibration: completed\n");
+
+/* if (DBG_LEVEL >= DBG_info)
+ sanei_gl841_print_registers (dev->calib_reg);*/
+
+
+ return SANE_STATUS_GOOD;
+}
+
+
+/* init registers for shading calibration */
+static SANE_Status
+gl841_init_regs_for_shading (Genesys_Device * dev)
+{
+ SANE_Status status;
+ SANE_Int ydpi;
+
+ DBG (DBG_proc, "gl841_init_regs_for_shading: lines = %d\n", (int)dev->calib_lines);
+
+ ydpi = dev->motor.base_ydpi;
+ if (dev->motor.motor_id == MOTOR_PLUSTEK_3600) /* TODO PLUSTEK_3600: 1200dpi not yet working, produces dark bar */
+ {
+ ydpi = 600;
+ }
+
+ dev->calib_channels = 3;
+ dev->calib_lines = dev->model->shading_lines;
+ status = gl841_init_scan_regs (dev,
+ dev->calib_reg,
+ dev->settings.xres,
+ ydpi,
+ 0,
+ 0,
+ (dev->sensor.sensor_pixels * dev->settings.xres) / dev->sensor.optical_res,
+ dev->calib_lines,
+ 16,
+ dev->calib_channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+/* we don't handle differing shading areas very well */
+/* SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE |*/
+ SCAN_FLAG_IGNORE_LINE_DISTANCE |
+ SCAN_FLAG_USE_OPTICAL_RES
+ );
+
+ dev->calib_pixels = dev->current_setup.pixels;
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_init_registers_for_shading: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ dev->scanhead_position_in_steps += dev->calib_lines;
+
+ status =
+ gl841_bulk_write_register (dev, dev->calib_reg, GENESYS_GL841_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_init_registers_for_shading: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_proc, "gl841_init_regs_for_shading: completed\n");
+
+ return SANE_STATUS_GOOD;
+}
+
+/* set up registers for the actual scan
+ */
+static SANE_Status
+gl841_init_regs_for_scan (Genesys_Device * dev)
+{
+ int channels;
+ int flags;
+ int depth;
+ float move;
+ int move_dpi;
+ float start;
+
+ SANE_Status status;
+
+ DBG (DBG_info,
+ "gl841_init_regs_for_scan settings:\nResolution: %uDPI\n"
+ "Lines : %u\nPPL : %u\nStartpos : %.3f/%.3f\nScan mode : %d\n\n",
+ dev->settings.yres, dev->settings.lines, dev->settings.pixels,
+ dev->settings.tl_x, dev->settings.tl_y, dev->settings.scan_mode);
+
+ gl841_slow_back_home(dev,SANE_TRUE);
+
+/* channels */
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR) /* single pass color */
+ channels = 3;
+ else
+ channels = 1;
+
+/* depth */
+ depth = dev->settings.depth;
+ if (dev->settings.scan_mode == SCAN_MODE_LINEART)
+ depth = 1;
+
+
+ /* steps to move to reach scanning area:
+ - first we move to physical start of scanning
+ either by a fixed steps amount from the black strip
+ or by a fixed amount from parking position,
+ minus the steps done during shading calibration
+ - then we move by the needed offset whitin physical
+ scanning area
+
+ assumption: steps are expressed at maximum motor resolution
+
+ we need:
+ SANE_Fixed y_offset;
+ SANE_Fixed y_size;
+ SANE_Fixed y_offset_calib;
+ mm_to_steps()=motor dpi / 2.54 / 10=motor dpi / MM_PER_INCH */
+
+ /* if scanner uses GENESYS_FLAG_SEARCH_START y_offset is
+ relative from origin, else, it is from parking position */
+
+ move_dpi = dev->motor.base_ydpi;
+
+ move = 0;
+ if (dev->model->flags & GENESYS_FLAG_SEARCH_START)
+ move += SANE_UNFIX (dev->model->y_offset_calib);
+
+ DBG (DBG_info, "gl841_init_regs_for_scan: move=%f steps\n", move);
+
+ move += SANE_UNFIX (dev->model->y_offset);
+ DBG (DBG_info, "gl841_init_regs_for_scan: move=%f steps\n", move);
+
+ move += dev->settings.tl_y;
+ DBG (DBG_info, "gl841_init_regs_for_scan: move=%f steps\n", move);
+
+ move = (move * move_dpi) / MM_PER_INCH;
+
+/* start */
+ start = SANE_UNFIX (dev->model->x_offset);
+
+ start += dev->settings.tl_x;
+
+ start = (start * dev->sensor.optical_res) / MM_PER_INCH;
+
+ flags=0;
+
+ /* we enable true gray for cis scanners only, and just when doing
+ * scan since color calibration is OK for this mode
+ */
+ flags = 0;
+
+ if(dev->model->is_cis && dev->settings.true_gray
+ &&dev->model->ccd_type != CCD_CANONLIDE35)
+ {
+ flags |= OPTICAL_FLAG_ENABLE_LEDADD;
+ }
+ /* enable emulated lineart from gray data */
+ if(dev->settings.scan_mode == SCAN_MODE_LINEART
+ && dev->settings.dynamic_lineart)
+ {
+ flags |= SCAN_FLAG_DYNAMIC_LINEART;
+ }
+
+ status = gl841_init_scan_regs (dev,
+ dev->reg,
+ dev->settings.xres,
+ dev->settings.yres,
+ start,
+ move,
+ dev->settings.pixels,
+ dev->settings.lines,
+ depth,
+ channels,
+ dev->settings.color_filter,
+ flags);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+
+ DBG (DBG_proc, "gl841_init_register_for_scan: completed\n");
+ return SANE_STATUS_GOOD;
+}
+
+/*
+ * this function sends generic gamma table (ie linear ones)
+ * or the Sensor specific one if provided
+ */
+static SANE_Status
+gl841_send_gamma_table (Genesys_Device * dev)
+{
+ int size;
+ SANE_Status status;
+ uint8_t *gamma;
+
+ DBGSTART;
+
+ size = 256;
+
+ /* allocate temporary gamma tables: 16 bits words, 3 channels */
+ gamma = (uint8_t *) malloc (size * 2 * 3);
+ if (gamma==NULL)
+ {
+ return SANE_STATUS_NO_MEM;
+ }
+
+ RIE(sanei_genesys_generate_gamma_buffer(dev, 16, 65535, size, gamma));
+
+ /* send address */
+ status = gl841_set_buffer_address_gamma (dev, 0x00000);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (gamma);
+ DBG (DBG_error,
+ "gl841_send_gamma_table: failed to set buffer address: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* send data */
+ status = gl841_bulk_write_data_gamma (dev, 0x28, (uint8_t *) gamma, size * 2 * 3);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (gamma);
+ DBG (DBG_error,
+ "gl841_send_gamma_table: failed to send gamma table: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ free (gamma);
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/* this function does the led calibration by scanning one line of the calibration
+ area below scanner's top on white strip.
+
+-needs working coarse/gain
+*/
+static SANE_Status
+gl841_led_calibration (Genesys_Device * dev)
+{
+ int num_pixels;
+ int total_size;
+ uint8_t *line;
+ int i, j;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int val;
+ int channels;
+ int avg[3], avga, avge;
+ int turn;
+ char fn[20];
+ uint16_t expr, expg, expb;
+ Genesys_Register_Set *r;
+
+ SANE_Bool acceptable = SANE_FALSE;
+
+ /* these 2 boundaries should be per sensor */
+ uint16_t min_exposure=500;
+ uint16_t max_exposure;
+
+ DBG (DBG_proc, "gl841_led_calibration\n");
+
+
+ if (dev->model->gpo_type == GPO_CANONLIDE35)
+ {
+ status = gl841_feed(dev, 280);/*feed to white strip. canon lide 35 only.*/
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_led_calibration: failed to feed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+
+ status = gl841_init_scan_regs (dev,
+ dev->calib_reg,
+ dev->settings.xres,
+ dev->settings.yres,
+ 0,
+ 0,
+ (dev->sensor.sensor_pixels*dev->settings.xres) / dev->sensor.optical_res,
+ 1,
+ 16,
+ channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE |
+ SCAN_FLAG_USE_OPTICAL_RES
+ );
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_led_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ RIE (gl841_bulk_write_register(dev, dev->calib_reg, GENESYS_GL841_MAX_REGS));
+
+ num_pixels = dev->current_setup.pixels;
+
+ total_size = num_pixels * channels * 2 * 1; /* colors * bytes_per_color * scan lines */
+
+ line = malloc (total_size);
+ if (!line)
+ return SANE_STATUS_NO_MEM;
+
+/*
+ we try to get equal bright leds here:
+
+ loop:
+ average per color
+ adjust exposure times
+ */
+
+ expr = (dev->sensor.regs_0x10_0x1d[0] << 8) | dev->sensor.regs_0x10_0x1d[1];
+ expg = (dev->sensor.regs_0x10_0x1d[2] << 8) | dev->sensor.regs_0x10_0x1d[3];
+ expb = (dev->sensor.regs_0x10_0x1d[4] << 8) | dev->sensor.regs_0x10_0x1d[5];
+
+ turn = 0;
+ /* max exposure is set to ~2 time initial average
+ * exposure, or 2 time last calibration exposure */
+ max_exposure=((expr+expg+expb)/3)*2;
+
+ do {
+
+ dev->sensor.regs_0x10_0x1d[0] = (expr >> 8) & 0xff;
+ dev->sensor.regs_0x10_0x1d[1] = expr & 0xff;
+ dev->sensor.regs_0x10_0x1d[2] = (expg >> 8) & 0xff;
+ dev->sensor.regs_0x10_0x1d[3] = expg & 0xff;
+ dev->sensor.regs_0x10_0x1d[4] = (expb >> 8) & 0xff;
+ dev->sensor.regs_0x10_0x1d[5] = expb & 0xff;
+
+ r = &(dev->calib_reg[reg_0x10]);
+ for (i = 0; i < 6; i++, r++) {
+ r->value = dev->sensor.regs_0x10_0x1d[i];
+ RIE (sanei_genesys_write_register (dev, 0x10+i, dev->sensor.regs_0x10_0x1d[i]));
+ }
+
+ RIE (gl841_bulk_write_register
+ (dev, dev->calib_reg, GENESYS_GL841_MAX_REGS));
+
+ DBG (DBG_info,
+ "gl841_led_calibration: starting first line reading\n");
+ RIE (gl841_begin_scan (dev, dev->calib_reg, SANE_TRUE));
+ RIE (sanei_genesys_read_data_from_scanner (dev, line, total_size));
+
+ if (DBG_LEVEL >= DBG_data) {
+ snprintf(fn,20,"led_%d.pnm",turn);
+ sanei_genesys_write_pnm_file (fn,
+ line,
+ 16,
+ channels,
+ num_pixels, 1);
+ }
+
+ acceptable = SANE_TRUE;
+
+ for (j = 0; j < channels; j++)
+ {
+ avg[j] = 0;
+ for (i = 0; i < num_pixels; i++)
+ {
+ if (dev->model->is_cis)
+ val =
+ line[i * 2 + j * 2 * num_pixels + 1] * 256 +
+ line[i * 2 + j * 2 * num_pixels];
+ else
+ val =
+ line[i * 2 * channels + 2 * j + 1] * 256 +
+ line[i * 2 * channels + 2 * j];
+ avg[j] += val;
+ }
+
+ avg[j] /= num_pixels;
+ }
+
+ DBG(DBG_info,"gl841_led_calibration: average: "
+ "%d,%d,%d\n",
+ avg[0],avg[1],avg[2]);
+
+ acceptable = SANE_TRUE;
+
+ if (avg[0] < avg[1] * 0.95 || avg[1] < avg[0] * 0.95 ||
+ avg[0] < avg[2] * 0.95 || avg[2] < avg[0] * 0.95 ||
+ avg[1] < avg[2] * 0.95 || avg[2] < avg[1] * 0.95)
+ acceptable = SANE_FALSE;
+
+ if (!acceptable) {
+ avga = (avg[0]+avg[1]+avg[2])/3;
+ expr = (expr * avga) / avg[0];
+ expg = (expg * avga) / avg[1];
+ expb = (expb * avga) / avg[2];
+/*
+ keep the resulting exposures below this value.
+ too long exposure drives the ccd into saturation.
+ we may fix this by relying on the fact that
+ we get a striped scan without shading, by means of
+ statistical calculation
+*/
+ avge = (expr + expg + expb) / 3;
+
+ if (avge > max_exposure) {
+ expr = (expr * max_exposure) / avge;
+ expg = (expg * max_exposure) / avge;
+ expb = (expb * max_exposure) / avge;
+ }
+ if (avge < min_exposure) {
+ expr = (expr * min_exposure) / avge;
+ expg = (expg * min_exposure) / avge;
+ expb = (expb * min_exposure) / avge;
+ }
+
+ }
+
+ RIE (gl841_stop_action (dev));
+
+ turn++;
+
+ } while (!acceptable && turn < 100);
+
+ DBG(DBG_info,"gl841_led_calibration: acceptable exposure: %d,%d,%d\n",
+ expr,expg,expb);
+
+ /* cleanup before return */
+ free (line);
+
+ gl841_slow_back_home(dev, SANE_TRUE);
+
+ DBG (DBG_proc, "gl841_led_calibration: completed\n");
+ return status;
+}
+
+/** @brief calibration for AD frontend devices
+ * experiments show that modifying offset is of little (if no) influence
+ * so we just return
+ * CHRIS: This was added from gl646.c as again offset seems to make no
+ * difference
+ *
+ * TODO PLUSTEK_3600 Michael Rickmann:
+ * offset calibration makes a lot of a difference but currently
+ * makes everything to dark
+ */
+static SANE_Status
+ad_fe_offset_calibration (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG (DBG_proc, "ad_fe_offset_calibration: start\n");
+ DBG (DBG_info, "ad_fe_offset_calibration: offset=(%d,%d,%d)\n",
+ dev->frontend.offset[0], dev->frontend.offset[1],
+ dev->frontend.offset[2]);
+ DBG (DBG_proc, "ad_fe_offset_calibration: end\n");
+ return status;
+}
+
+/* this function does the offset calibration by scanning one line of the calibration
+ area below scanner's top. There is a black margin and the remaining is white.
+ sanei_genesys_search_start() must have been called so that the offsets and margins
+ are allready known.
+
+this function expects the slider to be where?
+*/
+static SANE_Status
+gl841_offset_calibration (Genesys_Device * dev)
+{
+ int num_pixels;
+ int total_size;
+ uint8_t *first_line, *second_line;
+ int i, j;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int val;
+ int channels;
+ int off[3],offh[3],offl[3],off1[3],off2[3];
+ int min1[3],min2[3];
+ int cmin[3],cmax[3];
+ int turn;
+ char fn[20];
+ SANE_Bool acceptable = SANE_FALSE;
+ int mintgt = 0x400;
+
+ /* Analog Device fronted have a different calibration */
+ if (dev->model->dac_type == DAC_PLUSTEK_3600)
+ {
+ return ad_fe_offset_calibration (dev);
+ }
+
+ DBG (DBG_proc, "gl841_offset_calibration\n");
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+
+ status = gl841_init_scan_regs (dev,
+ dev->calib_reg,
+ dev->settings.xres,
+ dev->settings.yres,
+ 0,
+ 0,
+ (dev->sensor.sensor_pixels*dev->settings.xres) / dev->sensor.optical_res,
+ 1,
+ 16,
+ channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE |
+ SCAN_FLAG_USE_OPTICAL_RES |
+ SCAN_FLAG_DISABLE_LAMP
+ );
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_offset_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ num_pixels = dev->current_setup.pixels;
+
+ total_size = num_pixels * channels * 2 * 1; /* colors * bytes_per_color * scan lines */
+
+ first_line = malloc (total_size);
+ if (!first_line)
+ return SANE_STATUS_NO_MEM;
+
+ second_line = malloc (total_size);
+ if (!second_line)
+ {
+ free (first_line);
+ return SANE_STATUS_NO_MEM;
+ }
+
+ /* scan first line of data with no offset nor gain */
+/*WM8199: gain=0.73; offset=-260mV*/
+/*okay. the sensor black level is now at -260mV. we only get 0 from AFE...*/
+/* we should probably do real calibration here:
+ * -detect acceptable offset with binary search
+ * -calculate offset from this last version
+ *
+ * acceptable offset means
+ * - few completely black pixels(<10%?)
+ * - few completely white pixels(<10%?)
+ *
+ * final offset should map the minimum not completely black
+ * pixel to 0(16 bits)
+ *
+ * this does account for dummy pixels at the end of ccd
+ * this assumes slider is at black strip(which is not quite as black as "no
+ * signal").
+ *
+ */
+ dev->frontend.gain[0] = 0x00;
+ dev->frontend.gain[1] = 0x00;
+ dev->frontend.gain[2] = 0x00;
+ offh[0] = 0xff;
+ offh[1] = 0xff;
+ offh[2] = 0xff;
+ offl[0] = 0x00;
+ offl[1] = 0x00;
+ offl[2] = 0x00;
+ turn = 0;
+
+ do {
+
+ RIEF2 (gl841_bulk_write_register
+ (dev, dev->calib_reg, GENESYS_GL841_MAX_REGS), first_line, second_line);
+
+ for (j=0; j < channels; j++) {
+ off[j] = (offh[j]+offl[j])/2;
+ dev->frontend.offset[j] = off[j];
+ }
+
+ status = gl841_set_fe(dev, AFE_SET);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_offset_calibration: failed to setup frontend: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_info,
+ "gl841_offset_calibration: starting first line reading\n");
+ RIEF2 (gl841_begin_scan (dev, dev->calib_reg, SANE_TRUE), first_line, second_line);
+
+ RIEF2 (sanei_genesys_read_data_from_scanner (dev, first_line, total_size), first_line, second_line);
+
+ if (DBG_LEVEL >= DBG_data) {
+ snprintf(fn,20,"offset1_%02d.pnm",turn);
+ sanei_genesys_write_pnm_file (fn,
+ first_line,
+ 16,
+ channels,
+ num_pixels, 1);
+ }
+
+ acceptable = SANE_TRUE;
+
+ for (j = 0; j < channels; j++)
+ {
+ cmin[j] = 0;
+ cmax[j] = 0;
+
+ for (i = 0; i < num_pixels; i++)
+ {
+ if (dev->model->is_cis)
+ val =
+ first_line[i * 2 + j * 2 * num_pixels + 1] * 256 +
+ first_line[i * 2 + j * 2 * num_pixels];
+ else
+ val =
+ first_line[i * 2 * channels + 2 * j + 1] * 256 +
+ first_line[i * 2 * channels + 2 * j];
+ if (val < 10)
+ cmin[j]++;
+ if (val > 65525)
+ cmax[j]++;
+ }
+
+ /* TODO the DP685 has a black strip in the middle of the sensor
+ * should be handled in a more elegant way , could be a bug */
+ if (dev->model->ccd_type == CCD_DP685)
+ cmin[j] -= 20;
+
+ if (cmin[j] > num_pixels/100) {
+ acceptable = SANE_FALSE;
+ if (dev->model->is_cis)
+ offl[0] = off[0];
+ else
+ offl[j] = off[j];
+ }
+ if (cmax[j] > num_pixels/100) {
+ acceptable = SANE_FALSE;
+ if (dev->model->is_cis)
+ offh[0] = off[0];
+ else
+ offh[j] = off[j];
+ }
+ }
+
+ DBG(DBG_info,"gl841_offset_calibration: black/white pixels: "
+ "%d/%d,%d/%d,%d/%d\n",
+ cmin[0],cmax[0],cmin[1],cmax[1],cmin[2],cmax[2]);
+
+ if (dev->model->is_cis) {
+ offh[2] = offh[1] = offh[0];
+ offl[2] = offl[1] = offl[0];
+ }
+
+ RIEF2 (gl841_stop_action (dev), first_line, second_line);
+
+ turn++;
+ } while (!acceptable && turn < 100);
+
+ DBG(DBG_info,"gl841_offset_calibration: acceptable offsets: %d,%d,%d\n",
+ off[0],off[1],off[2]);
+
+
+ for (j = 0; j < channels; j++)
+ {
+ off1[j] = off[j];
+
+ min1[j] = 65536;
+
+ for (i = 0; i < num_pixels; i++)
+ {
+ if (dev->model->is_cis)
+ val =
+ first_line[i * 2 + j * 2 * num_pixels + 1] * 256 +
+ first_line[i * 2 + j * 2 * num_pixels];
+ else
+ val =
+ first_line[i * 2 * channels + 2 * j + 1] * 256 +
+ first_line[i * 2 * channels + 2 * j];
+ if (min1[j] > val && val >= 10)
+ min1[j] = val;
+ }
+ }
+
+
+ offl[0] = off[0];
+ offl[1] = off[0];
+ offl[2] = off[0];
+ turn = 0;
+
+ do {
+
+ for (j=0; j < channels; j++) {
+ off[j] = (offh[j]+offl[j])/2;
+ dev->frontend.offset[j] = off[j];
+ }
+
+ status = gl841_set_fe(dev, AFE_SET);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (first_line);
+ free (second_line);
+ DBG (DBG_error,
+ "gl841_offset_calibration: failed to setup frontend: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_info,
+ "gl841_offset_calibration: starting second line reading\n");
+ RIEF2 (gl841_bulk_write_register
+ (dev, dev->calib_reg, GENESYS_GL841_MAX_REGS), first_line, second_line);
+ RIEF2 (gl841_begin_scan (dev, dev->calib_reg, SANE_TRUE), first_line, second_line);
+ RIEF2 (sanei_genesys_read_data_from_scanner (dev, second_line, total_size), first_line, second_line);
+
+ if (DBG_LEVEL >= DBG_data) {
+ snprintf(fn,20,"offset2_%d.pnm",turn);
+ sanei_genesys_write_pnm_file (fn,
+ second_line,
+ 16,
+ channels,
+ num_pixels, 1);
+ }
+
+ acceptable = SANE_TRUE;
+
+ for (j = 0; j < channels; j++)
+ {
+ cmin[j] = 0;
+ cmax[j] = 0;
+
+ for (i = 0; i < num_pixels; i++)
+ {
+ if (dev->model->is_cis)
+ val =
+ second_line[i * 2 + j * 2 * num_pixels + 1] * 256 +
+ second_line[i * 2 + j * 2 * num_pixels];
+ else
+ val =
+ second_line[i * 2 * channels + 2 * j + 1] * 256 +
+ second_line[i * 2 * channels + 2 * j];
+ if (val < 10)
+ cmin[j]++;
+ if (val > 65525)
+ cmax[j]++;
+ }
+
+ if (cmin[j] > num_pixels/100) {
+ acceptable = SANE_FALSE;
+ if (dev->model->is_cis)
+ offl[0] = off[0];
+ else
+ offl[j] = off[j];
+ }
+ if (cmax[j] > num_pixels/100) {
+ acceptable = SANE_FALSE;
+ if (dev->model->is_cis)
+ offh[0] = off[0];
+ else
+ offh[j] = off[j];
+ }
+ }
+
+ DBG(DBG_info,"gl841_offset_calibration: black/white pixels: "
+ "%d/%d,%d/%d,%d/%d\n",
+ cmin[0],cmax[0],cmin[1],cmax[1],cmin[2],cmax[2]);
+
+ if (dev->model->is_cis) {
+ offh[2] = offh[1] = offh[0];
+ offl[2] = offl[1] = offl[0];
+ }
+
+ RIEF2 (gl841_stop_action (dev), first_line, second_line);
+
+ turn++;
+
+ } while (!acceptable && turn < 100);
+
+ DBG(DBG_info,"gl841_offset_calibration: acceptable offsets: %d,%d,%d\n",
+ off[0],off[1],off[2]);
+
+
+ for (j = 0; j < channels; j++)
+ {
+ off2[j] = off[j];
+
+ min2[j] = 65536;
+
+ for (i = 0; i < num_pixels; i++)
+ {
+ if (dev->model->is_cis)
+ val =
+ second_line[i * 2 + j * 2 * num_pixels + 1] * 256 +
+ second_line[i * 2 + j * 2 * num_pixels];
+ else
+ val =
+ second_line[i * 2 * channels + 2 * j + 1] * 256 +
+ second_line[i * 2 * channels + 2 * j];
+ if (min2[j] > val && val != 0)
+ min2[j] = val;
+ }
+ }
+
+ DBG(DBG_info,"gl841_offset_calibration: first set: %d/%d,%d/%d,%d/%d\n",
+ off1[0],min1[0],off1[1],min1[1],off1[2],min1[2]);
+
+ DBG(DBG_info,"gl841_offset_calibration: second set: %d/%d,%d/%d,%d/%d\n",
+ off2[0],min2[0],off2[1],min2[1],off2[2],min2[2]);
+
+/*
+ calculate offset for each channel
+ based on minimal pixel value min1 at offset off1 and minimal pixel value min2
+ at offset off2
+
+ to get min at off, values are linearly interpolated:
+ min=real+off*fact
+ min1=real+off1*fact
+ min2=real+off2*fact
+
+ fact=(min1-min2)/(off1-off2)
+ real=min1-off1*(min1-min2)/(off1-off2)
+
+ off=(min-min1+off1*(min1-min2)/(off1-off2))/((min1-min2)/(off1-off2))
+
+ off=(min*(off1-off2)+min1*off2-off1*min2)/(min1-min2)
+
+ */
+ for (j = 0; j < channels; j++)
+ {
+ if (min2[j]-min1[j] == 0) {
+/*TODO: try to avoid this*/
+ DBG(DBG_warn,"gl841_offset_calibration: difference too small\n");
+ if (mintgt * (off1[j] - off2[j]) + min1[j] * off2[j] - min2[j] * off1[j] >= 0)
+ off[j] = 0x0000;
+ else
+ off[j] = 0xffff;
+ } else
+ off[j] = (mintgt * (off1[j] - off2[j]) + min1[j] * off2[j] - min2[j] * off1[j])/(min1[j]-min2[j]);
+ if (off[j] > 255)
+ off[j] = 255;
+ if (off[j] < 0)
+ off[j] = 0;
+ dev->frontend.offset[j] = off[j];
+ }
+
+ DBG(DBG_info,"gl841_offset_calibration: final offsets: %d,%d,%d\n",
+ off[0],off[1],off[2]);
+
+ if (dev->model->is_cis) {
+ if (off[0] < off[1])
+ off[0] = off[1];
+ if (off[0] < off[2])
+ off[0] = off[2];
+ dev->frontend.offset[0] = off[0];
+ dev->frontend.offset[1] = off[0];
+ dev->frontend.offset[2] = off[0];
+ }
+
+ if (channels == 1)
+ {
+ dev->frontend.offset[1] = dev->frontend.offset[0];
+ dev->frontend.offset[2] = dev->frontend.offset[0];
+ }
+
+ /* cleanup before return */
+ free (first_line);
+ free (second_line);
+ DBG (DBG_proc, "gl841_offset_calibration: completed\n");
+ return status;
+}
+
+
+/* alternative coarse gain calibration
+ this on uses the settings from offset_calibration and
+ uses only one scanline
+ */
+/*
+ with offset and coarse calibration we only want to get our input range into
+ a reasonable shape. the fine calibration of the upper and lower bounds will
+ be done with shading.
+ */
+static SANE_Status
+gl841_coarse_gain_calibration (Genesys_Device * dev, int dpi)
+{
+ int num_pixels;
+ int total_size;
+ uint8_t *line;
+ int i, j, channels;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int max[3];
+ float gain[3];
+ int val;
+
+ DBG (DBG_proc, "gl841_coarse_gain_calibration dpi=%d\n", dpi);
+
+ if (dev->model->gpo_type == GPO_CANONLIDE35)
+ {
+ status = gl841_feed(dev, 280);/*feed to white strip. canon lide 35 only.*/
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_coarse_gain_calibration: failed to feed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* coarse gain calibration is allways done in color mode */
+ channels = 3;
+
+ status = gl841_init_scan_regs (dev,
+ dev->calib_reg,
+ dev->settings.xres,
+ dev->settings.yres,
+ 0,
+ 0,
+ (dev->sensor.sensor_pixels*dev->settings.xres) / dev->sensor.optical_res,
+ 1,
+ 16,
+ channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE |
+ SCAN_FLAG_USE_OPTICAL_RES
+ );
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_coarse_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ RIE (gl841_bulk_write_register
+ (dev, dev->calib_reg, GENESYS_GL841_MAX_REGS));
+
+ num_pixels = dev->current_setup.pixels;
+
+ total_size = num_pixels * channels * 2 * 1; /* colors * bytes_per_color * scan lines */
+
+ line = malloc (total_size);
+ if (!line)
+ return SANE_STATUS_NO_MEM;
+
+ RIEF (gl841_begin_scan (dev, dev->calib_reg, SANE_TRUE), line);
+ RIEF (sanei_genesys_read_data_from_scanner (dev, line, total_size), line);
+
+ if (DBG_LEVEL >= DBG_data)
+ sanei_genesys_write_pnm_file ("coarse.pnm", line, 16,
+ channels, num_pixels, 1);
+
+ /* average high level for each channel and compute gain
+ to reach the target code
+ we only use the central half of the CCD data */
+ for (j = 0; j < channels; j++)
+ {
+ max[j] = 0;
+ for (i = 0; i < num_pixels; i++)
+ {
+ if (dev->model->is_cis)
+ val =
+ line[i * 2 + j * 2 * num_pixels + 1] * 256 +
+ line[i * 2 + j * 2 * num_pixels];
+ else
+ val =
+ line[i * 2 * channels + 2 * j + 1] * 256 +
+ line[i * 2 * channels + 2 * j];
+
+ if (val > max[j])
+ max[j] = val;
+ }
+
+ gain[j] = 65535.0/max[j];
+
+ if (dev->model->dac_type == DAC_CANONLIDE35 ||
+ dev->model->dac_type == DAC_WOLFSON_XP300 ||
+ dev->model->dac_type == DAC_WOLFSON_DSM600) {
+ gain[j] *= 0.69;/*seems we don't get the real maximum. empirically derived*/
+ if (283 - 208/gain[j] > 255)
+ dev->frontend.gain[j] = 255;
+ else if (283 - 208/gain[j] < 0)
+ dev->frontend.gain[j] = 0;
+ else
+ dev->frontend.gain[j] = 283 - 208/gain[j];
+ }
+
+ DBG (DBG_proc,
+ "gl841_coarse_gain_calibration: channel %d, max=%d, gain = %f, setting:%d\n",
+ j, max[j], gain[j],dev->frontend.gain[j]);
+ }
+
+ for (j = 0; j < channels; j++)
+ {
+ if(gain[j] > 10)
+ {
+ DBG (DBG_error0, "**********************************************\n");
+ DBG (DBG_error0, "**********************************************\n");
+ DBG (DBG_error0, "**** ****\n");
+ DBG (DBG_error0, "**** Extremely low Brightness detected. ****\n");
+ DBG (DBG_error0, "**** Check the scanning head is ****\n");
+ DBG (DBG_error0, "**** unlocked and moving. ****\n");
+ DBG (DBG_error0, "**** ****\n");
+ DBG (DBG_error0, "**********************************************\n");
+ DBG (DBG_error0, "**********************************************\n");
+#ifdef SANE_STATUS_HW_LOCKED
+ return SANE_STATUS_HW_LOCKED;
+#else
+ return SANE_STATUS_JAMMED;
+#endif
+ }
+
+ }
+
+ if (dev->model->is_cis) {
+ if (dev->frontend.gain[0] > dev->frontend.gain[1])
+ dev->frontend.gain[0] = dev->frontend.gain[1];
+ if (dev->frontend.gain[0] > dev->frontend.gain[2])
+ dev->frontend.gain[0] = dev->frontend.gain[2];
+ dev->frontend.gain[2] = dev->frontend.gain[1] = dev->frontend.gain[0];
+ }
+
+ if (channels == 1)
+ {
+ dev->frontend.gain[0] = dev->frontend.gain[1];
+ dev->frontend.gain[2] = dev->frontend.gain[1];
+ }
+
+ free (line);
+
+ RIE (gl841_stop_action (dev));
+
+ gl841_slow_back_home(dev, SANE_TRUE);
+
+ DBG (DBG_proc, "gl841_coarse_gain_calibration: completed\n");
+ return status;
+}
+
+/*
+ * wait for lamp warmup by scanning the same line until difference
+ * between 2 scans is below a threshold
+ */
+static SANE_Status
+gl841_init_regs_for_warmup (Genesys_Device * dev,
+ Genesys_Register_Set * local_reg,
+ int *channels, int *total_size)
+{
+ int num_pixels = (int) (4 * 300);
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG (DBG_proc, "sanei_gl841_warmup_lamp\n");
+
+ memcpy (local_reg, dev->reg, (GENESYS_GL841_MAX_REGS + 1) * sizeof (Genesys_Register_Set));
+
+/* okay.. these should be defaults stored somewhere */
+ dev->frontend.gain[0] = 0x00;
+ dev->frontend.gain[1] = 0x00;
+ dev->frontend.gain[2] = 0x00;
+ dev->frontend.offset[0] = 0x80;
+ dev->frontend.offset[1] = 0x80;
+ dev->frontend.offset[2] = 0x80;
+
+ status = gl841_init_scan_regs (dev,
+ local_reg,
+ dev->sensor.optical_res,
+ dev->settings.yres,
+ dev->sensor.dummy_pixel,
+ 0,
+ num_pixels,
+ 1,
+ 16,
+ *channels,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE |
+ SCAN_FLAG_USE_OPTICAL_RES
+ );
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_init_regs_for_warmup: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ num_pixels = dev->current_setup.pixels;
+
+ *total_size = num_pixels * 3 * 2 * 1; /* colors * bytes_per_color * scan lines */
+
+ RIE (gl841_bulk_write_register
+ (dev, local_reg, GENESYS_GL841_MAX_REGS));
+
+ return status;
+}
+
+
+/*
+ * this function moves head without scanning, forward, then backward
+ * so that the head goes to park position.
+ * as a by-product, also check for lock
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+sanei_gl841_repark_head (Genesys_Device * dev)
+{
+ SANE_Status status;
+
+ DBG (DBG_proc, "sanei_gl841_repark_head\n");
+
+ status = gl841_feed(dev,232);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_repark_head: failed to feed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* toggle motor flag, put an huge step number and redo move backward */
+ status = gl841_slow_back_home (dev, SANE_TRUE);
+ DBG (DBG_proc, "gl841_park_head: completed\n");
+ return status;
+}
+
+static SANE_Status
+gl841_is_compatible_calibration (Genesys_Device * dev,
+ Genesys_Calibration_Cache *cache,
+ int for_overwrite)
+{
+ SANE_Status status;
+#ifdef HAVE_SYS_TIME_H
+ struct timeval time;
+#endif
+
+ DBGSTART;
+
+ /* calibration cache not working yet for this model */
+ if (dev->model->ccd_type == CCD_PLUSTEK_3600)
+ {
+ return SANE_STATUS_UNSUPPORTED;
+ }
+
+ status = gl841_calculate_current_setup (dev);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_is_compatible_calibration: failed to calculate current setup: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_proc, "gl841_is_compatible_calibration: checking\n");
+
+ if (dev->current_setup.half_ccd != cache->used_setup.half_ccd)
+ return SANE_STATUS_UNSUPPORTED;
+
+ /* a cache entry expires after 30 minutes for non sheetfed scanners */
+ /* this is not taken into account when overwriting cache entries */
+#ifdef HAVE_SYS_TIME_H
+ if(for_overwrite == SANE_FALSE)
+ {
+ gettimeofday (&time, NULL);
+ if ((time.tv_sec - cache->last_calibration > 30 * 60)
+ && (dev->model->is_sheetfed == SANE_FALSE))
+ {
+ DBG (DBG_proc, "%s: expired entry, non compatible cache\n",__FUNCTION__);
+ return SANE_STATUS_UNSUPPORTED;
+ }
+ }
+#endif
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/*
+ * initialize ASIC : registers, motor tables, and gamma tables
+ * then ensure scanner's head is at home
+ */
+static SANE_Status
+gl841_init (Genesys_Device * dev)
+{
+ SANE_Status status;
+ uint8_t val;
+ size_t size;
+ uint8_t *line;
+ int i;
+
+ DBG_INIT ();
+ DBGSTART;
+
+ dev->scanhead_position_in_steps = 0;
+
+ /* Check if the device has already been initialized and powered up */
+ if (dev->already_initialized)
+ {
+ RIE (sanei_genesys_get_status (dev, &val));
+ if (val & REG41_PWRBIT)
+ {
+ DBG (DBG_info, "gl841_init: already initialized\n");
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+ }
+
+ dev->dark_average_data = NULL;
+ dev->white_average_data = NULL;
+
+ dev->settings.color_filter = 0;
+
+ /* Set default values for registers */
+ gl841_init_registers (dev);
+
+ /* ASIC reset */
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x01));
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x00));
+
+ /* Write initial registers */
+ RIE (gl841_bulk_write_register
+ (dev, dev->reg, GENESYS_GL841_MAX_REGS));
+
+ /* Test ASIC and RAM */
+ if (!(dev->model->flags & GENESYS_FLAG_LAZY_INIT))
+ {
+ RIE (sanei_gl841_asic_test (dev));
+ }
+
+ /* Set analog frontend */
+ RIE (gl841_set_fe (dev, AFE_INIT));
+
+ /* Move home */
+ RIE (gl841_slow_back_home (dev, SANE_TRUE));
+
+ /* Init shading data */
+ RIE (sanei_genesys_init_shading_data (dev, dev->sensor.sensor_pixels));
+
+ /* ensure head is correctly parked, and check lock */
+ if (dev->model->flags & GENESYS_FLAG_REPARK)
+ {
+ status = sanei_gl841_repark_head (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ if (status == SANE_STATUS_INVAL)
+ DBG (DBG_error0,
+ "Your scanner is locked. Please move the lock switch "
+ "to the unlocked position\n");
+ else
+ DBG (DBG_error,
+ "gl841_init: sanei_gl841_repark_head failed: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ /* initalize sensor gamma tables */
+ size = 256;
+
+ for(i=0;i<3;i++)
+ {
+ if (dev->sensor.gamma_table[i] == NULL)
+ {
+ dev->sensor.gamma_table[i] = (uint16_t *) malloc (2 * size);
+ if (dev->sensor.gamma_table[i] == NULL)
+ {
+ DBG (DBG_error,
+ "gl841_init: could not allocate memory for gamma table %d\n",i);
+ return SANE_STATUS_NO_MEM;
+ }
+ sanei_genesys_create_gamma_table (dev->sensor.gamma_table[i],
+ size,
+ 65535,
+ 65535,
+ dev->sensor.gamma[i]);
+ }
+ }
+
+ /* send gamma tables */
+ status = gl841_send_gamma_table (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_init: failed to send initial gamma tables: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* initial calibration reg values */
+ memcpy (dev->calib_reg, dev->reg, (GENESYS_GL841_MAX_REGS + 1) * sizeof (Genesys_Register_Set));
+
+ status = gl841_init_scan_regs (dev,
+ dev->calib_reg,
+ 300,
+ 300,
+ 0,
+ 0,
+ (16 * 300) / dev->sensor.optical_res,
+ 1,
+ 16,
+ 3,
+ 0,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE |
+ SCAN_FLAG_USE_OPTICAL_RES
+ );
+
+ RIE (gl841_bulk_write_register
+ (dev, dev->calib_reg, GENESYS_GL841_MAX_REGS));
+
+ size = dev->current_setup.pixels * 3 * 2 * 1; /* colors * bytes_per_color * scan lines */
+
+ line = malloc (size);
+ if (!line)
+ return SANE_STATUS_NO_MEM;
+
+ DBG (DBG_info,
+ "gl841_init: starting dummy data reading\n");
+ RIEF (gl841_begin_scan (dev, dev->calib_reg, SANE_TRUE), line);
+
+ sanei_usb_set_timeout(1000);/* 1 second*/
+
+/*ignore errors. next read will succeed*/
+ sanei_genesys_read_data_from_scanner (dev, line, size);
+ free(line);
+
+ sanei_usb_set_timeout(30 * 1000);/* 30 seconds*/
+
+ RIE (gl841_end_scan (dev, dev->calib_reg, SANE_TRUE));
+
+
+ memcpy (dev->calib_reg, dev->reg, (GENESYS_GL841_MAX_REGS + 1) * sizeof (Genesys_Register_Set));
+
+ /* Set powersaving (default = 15 minutes) */
+ RIE (gl841_set_powersaving (dev, 15));
+ dev->already_initialized = SANE_TRUE;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl841_update_hardware_sensors (Genesys_Scanner * s)
+{
+ /* do what is needed to get a new set of events, but try to not lose
+ any of them.
+ */
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t val;
+
+ if (s->dev->model->gpo_type == GPO_CANONLIDE35)
+ {
+ RIE(sanei_genesys_read_register(s->dev, REG6D, &val));
+
+ if (s->val[OPT_SCAN_SW].b == s->last_val[OPT_SCAN_SW].b)
+ s->val[OPT_SCAN_SW].b = (val & 0x01) == 0;
+ if (s->val[OPT_FILE_SW].b == s->last_val[OPT_FILE_SW].b)
+ s->val[OPT_FILE_SW].b = (val & 0x02) == 0;
+ if (s->val[OPT_EMAIL_SW].b == s->last_val[OPT_EMAIL_SW].b)
+ s->val[OPT_EMAIL_SW].b = (val & 0x04) == 0;
+ if (s->val[OPT_COPY_SW].b == s->last_val[OPT_COPY_SW].b)
+ s->val[OPT_COPY_SW].b = (val & 0x08) == 0;
+ }
+
+ if (s->dev->model->gpo_type == GPO_XP300 ||
+ s->dev->model->gpo_type == GPO_DP665 ||
+ s->dev->model->gpo_type == GPO_DP685)
+ {
+ RIE(sanei_genesys_read_register(s->dev, REG6D, &val));
+
+ if (s->val[OPT_PAGE_LOADED_SW].b == s->last_val[OPT_PAGE_LOADED_SW].b)
+ s->val[OPT_PAGE_LOADED_SW].b = (val & 0x01) == 0;
+ if (s->val[OPT_SCAN_SW].b == s->last_val[OPT_SCAN_SW].b)
+ s->val[OPT_SCAN_SW].b = (val & 0x02) == 0;
+ }
+
+ return status;
+}
+
+/** @brief search for a full width black or white strip.
+ * This function searches for a black or white stripe across the scanning area.
+ * When searching backward, the searched area must completely be of the desired
+ * color since this area will be used for calibration which scans forward.
+ * @param dev scanner device
+ * @param forward SANE_TRUE if searching forward, SANE_FALSE if searching backward
+ * @param black SANE_TRUE if searching for a black strip, SANE_FALSE for a white strip
+ * @return SANE_STATUS_GOOD if a matching strip is found, SANE_STATUS_UNSUPPORTED if not
+ */
+static SANE_Status
+gl841_search_strip (Genesys_Device * dev, SANE_Bool forward, SANE_Bool black)
+{
+ unsigned int pixels, lines, channels;
+ SANE_Status status;
+ Genesys_Register_Set local_reg[GENESYS_GL841_MAX_REGS + 1];
+ size_t size;
+ uint8_t *data;
+ int steps, depth, dpi;
+ unsigned int pass, count, found, x, y, length;
+ char title[80];
+ Genesys_Register_Set *r;
+ uint8_t white_level=90; /**< default white level to detect white dots */
+ uint8_t black_level=60; /**< default black level to detect black dots */
+
+ DBG (DBG_proc, "gl841_search_strip %s %s\n", black ? "black" : "white",
+ forward ? "forward" : "reverse");
+
+ /* use maximum gain when doing forward white strip detection
+ * since we don't have calibrated the sensor yet */
+ if(!black && forward)
+ {
+ dev->frontend.gain[0] = 0xff;
+ dev->frontend.gain[1] = 0xff;
+ dev->frontend.gain[2] = 0xff;
+ }
+
+ gl841_set_fe (dev, AFE_SET);
+ status = gl841_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_search_strip: failed to stop: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* set up for a gray scan at lowest dpi */
+ dpi = 9600;
+ for (x = 0; x < MAX_RESOLUTIONS; x++)
+ {
+ if (dev->model->xdpi_values[x] > 0 && dev->model->xdpi_values[x] < dpi)
+ dpi = dev->model->xdpi_values[x];
+ }
+ channels = 1;
+
+ /* shading calibation is done with dev->motor.base_ydpi */
+ /* lines = (dev->model->shading_lines * dpi) / dev->motor.base_ydpi; */
+ lines = (10*dpi)/MM_PER_INCH;
+
+ depth = 8;
+ pixels = (dev->sensor.sensor_pixels * dpi) / dev->sensor.optical_res;
+ size = pixels * channels * lines * (depth / 8);
+ data = malloc (size);
+ if (!data)
+ {
+ DBG (DBG_error, "gl841_search_strip: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ /* 20 cm max length for calibration sheet */
+ length = ((200 * dpi) / MM_PER_INCH)/lines;
+
+ dev->scanhead_position_in_steps = 0;
+
+ memcpy (local_reg, dev->reg,
+ (GENESYS_GL841_MAX_REGS + 1) * sizeof (Genesys_Register_Set));
+
+ status = gl841_init_scan_regs (dev,
+ local_reg,
+ dpi,
+ dpi,
+ 0,
+ 0,
+ pixels,
+ lines,
+ depth,
+ channels,
+ 0,
+ SCAN_FLAG_DISABLE_SHADING | SCAN_FLAG_DISABLE_GAMMA);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free(data);
+ DBG (DBG_error, "%s: failed to setup for scan: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* set up for reverse or forward */
+ r = sanei_genesys_get_address (local_reg, 0x02);
+ if (forward)
+ r->value &= ~4;
+ else
+ r->value |= 4;
+
+
+ status = gl841_bulk_write_register (dev, local_reg, GENESYS_GL841_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free(data);
+ DBG (DBG_error,
+ "gl841_search_strip: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl841_begin_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl841_search_strip: failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* waits for valid data */
+ do
+ sanei_genesys_test_buffer_empty (dev, &steps);
+ while (steps);
+
+ /* now we're on target, we can read data */
+ status = sanei_genesys_read_data_from_scanner (dev, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl841_search_start_position: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl841_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error, "gl841_search_strip: gl841_stop_action failed\n");
+ return status;
+ }
+
+ pass = 0;
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sprintf (title, "search_strip_%s_%s%02u.pnm", black ? "black" : "white",
+ forward ? "fwd" : "bwd", pass);
+ sanei_genesys_write_pnm_file (title, data, depth, channels, pixels,
+ lines);
+ }
+
+ /* loop until strip is found or maximum pass number done */
+ found = 0;
+ while (pass < length && !found)
+ {
+ status =
+ gl841_bulk_write_register (dev, local_reg, GENESYS_GL841_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl841_search_strip: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* now start scan */
+ status = gl841_begin_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl841_search_strip: failed to begin scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* waits for valid data */
+ do
+ sanei_genesys_test_buffer_empty (dev, &steps);
+ while (steps);
+
+ /* now we're on target, we can read data */
+ status = sanei_genesys_read_data_from_scanner (dev, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl841_search_start_position: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl841_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error, "gl841_search_strip: gl841_stop_action failed\n");
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sprintf (title, "search_strip_%s_%s%02u.pnm",
+ black ? "black" : "white", forward ? "fwd" : "bwd", pass);
+ sanei_genesys_write_pnm_file (title, data, depth, channels, pixels,
+ lines);
+ }
+
+ /* search data to find black strip */
+ /* when searching forward, we only need one line of the searched color since we
+ * will scan forward. But when doing backward search, we need all the area of the
+ * same color */
+ if (forward)
+ {
+ for (y = 0; y < lines && !found; y++)
+ {
+ count = 0;
+ /* count of white/black pixels depending on the color searched */
+ for (x = 0; x < pixels; x++)
+ {
+ /* when searching for black, detect white pixels */
+ if (black && data[y * pixels + x] > white_level)
+ {
+ count++;
+ }
+ /* when searching for white, detect black pixels */
+ if (!black && data[y * pixels + x] < black_level)
+ {
+ count++;
+ }
+ }
+
+ /* at end of line, if count >= 3%, line is not fully of the desired color
+ * so we must go to next line of the buffer */
+ /* count*100/pixels < 3 */
+ if ((count * 100) / pixels < 3)
+ {
+ found = 1;
+ DBG (DBG_data,
+ "gl841_search_strip: strip found forward during pass %d at line %d\n",
+ pass, y);
+ }
+ else
+ {
+ DBG (DBG_data,
+ "gl841_search_strip: pixels=%d, count=%d (%d%%)\n",
+ pixels, count, (100 * count) / pixels);
+ }
+ }
+ }
+ else /* since calibration scans are done forward, we need the whole area
+ to be of the required color when searching backward */
+ {
+ count = 0;
+ for (y = 0; y < lines; y++)
+ {
+ /* count of white/black pixels depending on the color searched */
+ for (x = 0; x < pixels; x++)
+ {
+ /* when searching for black, detect white pixels */
+ if (black && data[y * pixels + x] > white_level)
+ {
+ count++;
+ }
+ /* when searching for white, detect black pixels */
+ if (!black && data[y * pixels + x] < black_level)
+ {
+ count++;
+ }
+ }
+ }
+
+ /* at end of area, if count >= 3%, area is not fully of the desired color
+ * so we must go to next buffer */
+ if ((count * 100) / (pixels * lines) < 3)
+ {
+ found = 1;
+ DBG (DBG_data,
+ "gl841_search_strip: strip found backward during pass %d \n",
+ pass);
+ }
+ else
+ {
+ DBG (DBG_data,
+ "gl841_search_strip: pixels=%d, count=%d (%d%%)\n", pixels,
+ count, (100 * count) / pixels);
+ }
+ }
+ pass++;
+ }
+ free (data);
+ if (found)
+ {
+ status = SANE_STATUS_GOOD;
+ DBG (DBG_info, "gl841_search_strip: %s strip found\n",
+ black ? "black" : "white");
+ }
+ else
+ {
+ status = SANE_STATUS_UNSUPPORTED;
+ DBG (DBG_info, "gl841_search_strip: %s strip not found\n",
+ black ? "black" : "white");
+ }
+
+ DBG (DBG_proc, "gl841_search_strip: completed\n");
+ return status;
+}
+
+/** the gl841 command set */
+static Genesys_Command_Set gl841_cmd_set = {
+ "gl841-generic", /* the name of this set */
+
+ gl841_init,
+ gl841_init_regs_for_warmup,
+ gl841_init_regs_for_coarse_calibration,
+ gl841_init_regs_for_shading,
+ gl841_init_regs_for_scan,
+
+ gl841_get_filter_bit,
+ gl841_get_lineart_bit,
+ gl841_get_bitset_bit,
+ gl841_get_gain4_bit,
+ gl841_get_fast_feed_bit,
+ gl841_test_buffer_empty_bit,
+ gl841_test_motor_flag_bit,
+
+ gl841_bulk_full_size,
+
+ gl841_set_fe,
+ gl841_set_powersaving,
+ gl841_save_power,
+
+ gl841_set_motor_power,
+ gl841_set_lamp_power,
+
+ gl841_begin_scan,
+ gl841_end_scan,
+
+ gl841_send_gamma_table,
+
+ gl841_search_start_position,
+
+ gl841_offset_calibration,
+ gl841_coarse_gain_calibration,
+ gl841_led_calibration,
+
+ gl841_slow_back_home,
+
+ gl841_bulk_write_register,
+ gl841_bulk_write_data,
+ gl841_bulk_read_data,
+
+ gl841_update_hardware_sensors,
+
+ gl841_load_document,
+ gl841_detect_document_end,
+ gl841_eject_document,
+ gl841_search_strip,
+
+ gl841_is_compatible_calibration,
+ NULL,
+ NULL,
+ gl841_calculate_current_setup,
+ NULL
+};
+
+SANE_Status
+sanei_gl841_init_cmd_set (Genesys_Device * dev)
+{
+ dev->model->cmd_set = &gl841_cmd_set;
+ return SANE_STATUS_GOOD;
+}
+
+/* vim: set sw=2 cino=>2se-1sn-1s{s^-1st0(0u0 smarttab expandtab: */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 06:28:14 +0000