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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_gl843.c
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'backend/genesys_gl843.c')
-rw-r--r--backend/genesys_gl843.c4459
1 files changed, 4459 insertions, 0 deletions
diff --git a/backend/genesys_gl843.c b/backend/genesys_gl843.c
new file mode 100644
index 0000000..3648d09
--- /dev/null
+++ b/backend/genesys_gl843.c
@@ -0,0 +1,4459 @@
+/* sane - Scanner Access Now Easy.
+
+ Copyright (C) 2010-2013 Stéphane Voltz <stef.dev@free.fr>
+
+
+ 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_gl843
+
+#include "genesys_gl843.h"
+
+/****************************************************************************
+ Low level function
+ ****************************************************************************/
+
+/* ------------------------------------------------------------------------ */
+/* Read and write RAM, registers and AFE */
+/* ------------------------------------------------------------------------ */
+
+
+/**
+ * Write bulk data (e.g. gamma or shading data) */
+static SANE_Status
+gl843_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];
+
+ DBGSTART;
+ DBG (DBG_io, "gl843_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,
+ "gl843_bulk_write_data failed while setting register: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ while (len)
+ {
+ if(len>65472)
+ size=65472;
+ else
+ size = len;
+
+ outdata[0] = BULK_OUT;
+ outdata[1] = BULK_RAM;
+ outdata[2] = 0x00;
+ 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,
+ "gl843_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,
+ "gl843_bulk_write_data failed while writing bulk data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_io2,
+ "gl843_bulk_write_data: wrote %lu bytes, %lu remaining\n",
+ (u_long) size, (u_long) (len - size));
+
+ len -= size;
+ data += size;
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/* Set address for writing data */
+static SANE_Status
+gl843_set_buffer_address (Genesys_Device * dev, uint32_t addr)
+{
+ SANE_Status status;
+
+ DBG (DBG_io, "gl843_set_buffer_address: setting address to 0x%05x\n",
+ addr & 0xffff);
+
+ status = sanei_genesys_write_register (dev, 0x5b, ((addr >> 8) & 0xff));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_set_buffer_address: failed while writing high byte: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = sanei_genesys_write_register (dev, 0x5c, (addr & 0xff));
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_set_buffer_address: failed while writing low byte: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_io, "gl843_set_buffer_address: completed\n");
+
+ return status;
+}
+
+/**
+ * writes a block of data to RAM
+ * @param dev USB device
+ * @param addr RAM address to write to
+ * @param size size of the chunk of data
+ * @param data pointer to the data to write
+ */
+static SANE_Status
+write_data (Genesys_Device * dev, uint32_t addr, uint32_t size,
+ uint8_t * data)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBGSTART;
+
+ status = gl843_set_buffer_address (dev, addr);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "write_data: failed while setting address for bulk write data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* write actual data */
+ status = gl843_bulk_write_data (dev, 0x28, data, size);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "write_data: failed while writing bulk write data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* set back address to 0 */
+ status = gl843_set_buffer_address (dev, 0);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "write_data: failed setting to default RAM address: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ DBGCOMPLETED;
+ return status;
+}
+
+
+static SANE_Status
+gl843_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];
+
+ DBGSTART;
+ DBG (DBG_io,
+ "gl843_bulk_read_data: requesting %lu bytes from 0x%02x addr\n",
+ (u_long) len, addr);
+
+ status =
+ sanei_usb_control_msg (dev->dn, REQUEST_TYPE_OUT, REQUEST_REGISTER,
+ VALUE_SET_REGISTER, 0, 1, &addr);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "write_data: failed to set register address %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ if (len == 0)
+ return SANE_STATUS_GOOD;
+
+ outdata[0] = BULK_IN;
+ outdata[1] = BULK_RAM;
+ outdata[2] = VALUE_BUFFER;
+ outdata[3] = 0;
+ 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,
+ "gl843_bulk_read_data failed while writing command: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ while (len)
+ {
+ if (len > 0xF000)
+ size = 0xF000;
+ else
+ size = len;
+ if (size >= 512)
+ {
+ size /= 512;
+ size *= 512;
+ }
+
+ DBG (DBG_io2,
+ "gl843_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,
+ "gl843_bulk_read_data failed while reading bulk data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_io2,
+ "gl843_bulk_read_data read %lu bytes, %lu remaining\n",
+ (u_long) size, (u_long) (len - size));
+
+ len -= size;
+ data += size;
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/****************************************************************************
+ Mid level functions
+ ****************************************************************************/
+
+static SANE_Bool
+gl843_get_fast_feed_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG02);
+ if (r && (r->value & REG02_FASTFED))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl843_get_filter_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG04);
+ if (r && (r->value & REG04_FILTER))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl843_get_lineart_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG04);
+ if (r && (r->value & REG04_LINEART))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl843_get_bitset_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG04);
+ if (r && (r->value & REG04_BITSET))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl843_get_gain4_bit (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+
+ r = sanei_genesys_get_address (regs, REG06);
+ if (r && (r->value & REG06_GAIN4))
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+/**
+ * compute the step multiplier used
+ */
+static int
+gl843_get_step_multiplier (Genesys_Register_Set * regs)
+{
+ Genesys_Register_Set *r = NULL;
+ int value = 1;
+
+ r = sanei_genesys_get_address (regs, REG9D);
+ if (r != NULL)
+ {
+ switch (r->value & 0x0c)
+ {
+ case 0x04:
+ value = 2;
+ break;
+ case 0x08:
+ value = 4;
+ break;
+ default:
+ value = 1;
+ }
+ }
+ DBG (DBG_io, "%s: step multiplier is %d\n", __FUNCTION__, value);
+ return value;
+}
+
+static SANE_Bool
+gl843_test_buffer_empty_bit (SANE_Byte val)
+{
+ if (val & REG41_BUFEMPTY)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+static SANE_Bool
+gl843_test_motor_flag_bit (SANE_Byte val)
+{
+ if (val & REG41_MOTORENB)
+ return SANE_TRUE;
+ return SANE_FALSE;
+}
+
+/** @brief sensor profile
+ * search for the database of motor profiles and get the best one. Each
+ * profile is at a specific dpihw. Use first entry of table by default.
+ * @param sensor_type sensor id
+ * @param dpi hardware dpi for the scan
+ * @param flags to select between XPA, XPA+IR or regular scan from OPTICAL_FLAGS_*
+ * @return a pointer to a Sensor_Profile struct
+ */
+static Sensor_Profile *get_sensor_profile(int sensor_type, int dpi, int flags)
+{
+ unsigned int i, count;
+ int idx;
+ Sensor_Profile *sp;
+
+ if(flags & OPTICAL_FLAG_USE_XPA)
+ {
+ sp=xpa_sensors;
+ count=sizeof(xpa_sensors)/sizeof(Sensor_Profile);
+ }
+ else
+ {
+ sp=sensors;
+ count=sizeof(sensors)/sizeof(Sensor_Profile);
+ }
+ i=0;
+ idx=-1;
+ while(i<count)
+ {
+ /* exact match */
+ if(sp[i].sensor_type==sensor_type && sp[i].dpi==dpi)
+ {
+ return &(sp[i]);
+ }
+
+ /* closest match */
+ if(sp[i].sensor_type==sensor_type)
+ {
+ if(idx<0)
+ {
+ idx=i;
+ }
+ else
+ {
+ if(sp[i].dpi>=dpi
+ && sp[i].dpi<sp[idx].dpi)
+ {
+ idx=i;
+ }
+ }
+ }
+ i++;
+ }
+
+ /* default fallback */
+ if(idx<0)
+ {
+ DBG (DBG_warn,"%s: using default sensor profile\n",__FUNCTION__);
+ idx=0;
+ }
+
+ return &(sp[idx]);
+}
+
+
+/** copy sensor specific settings */
+static void
+gl843_setup_sensor (Genesys_Device * dev, Genesys_Register_Set * regs, int dpi,int flags)
+{
+ Genesys_Register_Set *r;
+ Sensor_Profile *sensor;
+ int i,dpihw;
+
+ DBGSTART;
+
+ dpihw=sanei_genesys_compute_dpihw(dev,dpi);
+ sensor=get_sensor_profile(dev->model->ccd_type, dpihw, flags);
+
+ for (i = 0x06; i < 0x0e; i++)
+ {
+ r = sanei_genesys_get_address (regs, 0x10 + i);
+ if (r)
+ r->value = sensor->regs_0x10_0x1d[i];
+ }
+ for (i = 0; i < 9; i++)
+ {
+ r = sanei_genesys_get_address (regs, 0x52 + i);
+ if (r)
+ r->value = sensor->regs_0x52_0x5e[i];
+ }
+
+ /* specific registers */
+ r = sanei_genesys_get_address (regs, 0x0c);
+ if (r)
+ {
+ r->value = sensor->reg0c;
+ }
+ r = sanei_genesys_get_address (regs, 0x70);
+ if (r)
+ {
+ r->value = sensor->reg70;
+ }
+ r = sanei_genesys_get_address (regs, 0x71);
+ if (r)
+ {
+ r->value = sensor->reg71;
+ }
+ r = sanei_genesys_get_address (regs, 0x7d);
+ if (r)
+ {
+ if (!(dev->model->flags & GENESYS_FLAG_FULL_HWDPI_MODE))
+ {
+ r->value = 0x90;
+ }
+ }
+ r = sanei_genesys_get_address (regs, 0x9e);
+ if (r)
+ {
+ r->value = sensor->reg9e;
+ }
+ /* undocumented register */
+ r = sanei_genesys_get_address (regs, 0xaa);
+ if (r)
+ {
+ r->value = sensor->regaa;
+ }
+
+ /* CKxMAP */
+ sanei_genesys_set_triple(regs,REG_CK1MAP,sensor->ck1map);
+ sanei_genesys_set_triple(regs,REG_CK3MAP,sensor->ck3map);
+ sanei_genesys_set_triple(regs,REG_CK4MAP,sensor->ck4map);
+
+ DBGCOMPLETED;
+}
+
+
+/* returns the max register bulk size */
+static int
+gl843_bulk_full_size (void)
+{
+ return GENESYS_GL843_MAX_REGS;
+}
+
+/** @brief set all registers to default values .
+ * This function is called only once at the beginning and
+ * fills register startup values for registers reused across scans.
+ * Those that are rarely modified or not modified are written
+ * individually.
+ * @param dev device structure holding register set to initialize
+ */
+static void
+gl843_init_registers (Genesys_Device * dev)
+{
+ DBGSTART;
+
+ memset (dev->reg, 0, GENESYS_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ /* default to KV-SS080 */
+ SETREG (0xa2, 0x0f);
+ SETREG (0x01, 0x00);
+ SETREG (0x02, 0x78);
+ SETREG (0x03, 0x1f);
+ SETREG (0x04, 0x10);
+ SETREG (0x05, 0x80);
+ SETREG (0x06, 0xd8); /* SCANMOD=110, PWRBIT and GAIN4 */
+ SETREG (0x08, 0x00);
+ SETREG (0x09, 0x00);
+ SETREG (0x0a, 0x00);
+ SETREG (0x0b, 0x6a);
+ SETREG (0x10, 0x00);
+ SETREG (0x11, 0x00);
+ SETREG (0x12, 0x00);
+ SETREG (0x13, 0x00);
+ SETREG (0x14, 0x00);
+ SETREG (0x15, 0x00);
+ SETREG (0x16, 0x33);
+ SETREG (0x17, 0x1c);
+ SETREG (0x18, 0x10);
+ SETREG (0x19, 0x2a);
+ SETREG (0x1a, 0x04);
+ SETREG (0x1b, 0x00);
+ SETREG (0x1c, 0x20);
+ SETREG (0x1d, 0x04);
+ SETREG (0x1e, 0x10);
+ SETREG (0x1f, 0x01);
+ SETREG (0x20, 0x10);
+ SETREG (0x21, 0x04);
+ SETREG (0x22, 0x01);
+ SETREG (0x23, 0x01);
+ SETREG (0x24, 0x04);
+ SETREG (0x25, 0x00);
+ SETREG (0x26, 0x00);
+ SETREG (0x27, 0x00);
+ SETREG (0x2c, 0x02);
+ SETREG (0x2d, 0x58);
+ SETREG (0x2e, 0x80);
+ SETREG (0x2f, 0x80);
+ SETREG (0x30, 0x00);
+ SETREG (0x31, 0x14);
+ SETREG (0x32, 0x27);
+ SETREG (0x33, 0xec);
+ SETREG (0x34, 0x24);
+ SETREG (0x35, 0x00);
+ SETREG (0x36, 0xff);
+ SETREG (0x37, 0xff);
+ SETREG (0x38, 0x55);
+ SETREG (0x39, 0xf0);
+ SETREG (0x3d, 0x00);
+ SETREG (0x3e, 0x00);
+ SETREG (0x3f, 0x01);
+ SETREG (0x52, 0x01);
+ SETREG (0x53, 0x04);
+ SETREG (0x54, 0x07);
+ SETREG (0x55, 0x0a);
+ SETREG (0x56, 0x0d);
+ SETREG (0x57, 0x10);
+ SETREG (0x58, 0x1b);
+ SETREG (0x59, 0x00);
+ SETREG (0x5a, 0x40);
+ SETREG (0x5e, 0x23);
+ SETREG (0x5f, 0x01);
+ SETREG (0x60, 0x00);
+ SETREG (0x61, 0x00);
+ SETREG (0x62, 0x00);
+ SETREG (0x63, 0x00);
+ SETREG (0x64, 0x00);
+ SETREG (0x65, 0x00);
+ SETREG (0x67, 0x7f);
+ SETREG (0x68, 0x7f);
+ SETREG (0x69, 0x01);
+ SETREG (0x6a, 0x04);
+ SETREG (0x6b, 0x30);
+ SETREG (0x70, 0x01);
+ SETREG (0x71, 0x03);
+ SETREG (0x72, 0x04);
+ SETREG (0x73, 0x05);
+
+ /* CKxMAP */
+ SETREG (0x74, 0x00);
+ SETREG (0x75, 0x00);
+ SETREG (0x76, 0x3c);
+ SETREG (0x77, 0x00);
+ SETREG (0x78, 0x00);
+ SETREG (0x79, 0x9f);
+ SETREG (0x7a, 0x00);
+ SETREG (0x7b, 0x00);
+ SETREG (0x7c, 0x55);
+
+ SETREG (0x7d, 0x00);
+ SETREG (0x7f, 0x00);
+ SETREG (0x80, 0x00);
+ if (strcmp (dev->model->name, "canon-canoscan-4400f") != 0)
+ {
+ SETREG (0x81, 0x00);
+ SETREG (0x82, 0x00);
+ SETREG (0x83, 0x00);
+ SETREG (0x84, 0x00);
+ SETREG (0x85, 0x00);
+ SETREG (0x86, 0x00);
+ }
+ SETREG (0x87, 0x00);
+ SETREG (0x9d, 0x04);
+ SETREG (0x9e, 0x00);
+ if (strcmp (dev->model->name, "canon-canoscan-8400f") != 0)
+ {
+ SETREG (0x0c, 0x00);
+ SETREG (0x94, 0xff);
+ SETREG (0xab, 0x50);
+ }
+
+ /* so many time burnt for this register ....*/
+ if (strcmp (dev->model->name, "canon-canoscan-4400f") != 0
+ &&strcmp (dev->model->name, "canon-canoscan-8400f") != 0)
+ {
+ SETREG (0xaa, 0x00);
+ }
+
+ /* G4050 values */
+ if ((strcmp (dev->model->name, "hewlett-packard-scanjet-g4050") == 0)
+ || (strcmp (dev->model->name, "hewlett-packard-scanjet-4850c") == 0)
+ || (strcmp (dev->model->name, "hewlett-packard-scanjet-g4010") == 0))
+ {
+ SETREG (0x03, 0x1d);
+ SETREG (0x05, 0x08);
+ SETREG (0x06, 0xd0); /* SCANMOD=110, PWRBIT and no GAIN4 */
+ SETREG (0x06, 0xd8); /* SCANMOD=110, PWRBIT and GAIN4 */
+ SETREG (0x0a, 0x18);
+ SETREG (0x0b, 0x69);
+
+ /* CIS exposure is used for XPA lamp movement */
+ SETREG (0x10, 0x2c);
+ SETREG (0x11, 0x09);
+ SETREG (0x12, 0x22);
+ SETREG (0x13, 0xb8);
+ SETREG (0x14, 0x10);
+ SETREG (0x15, 0xf0);
+
+ SETREG (0x6b, 0xf4);
+
+ SETREG (0x70, 0x00);
+ SETREG (0x71, 0x02);
+ SETREG (0x72, 0x00);
+ SETREG (0x73, 0x00);
+
+ SETREG (0x80, 0x50);
+ SETREG (0x9d, 0x08);
+ SETREG (0xab, 0x40);
+
+ /* XXX STEF XXX TODO move to set for scan */
+ SETREG (0x98, 0x03);
+ SETREG (0x99, 0x30);
+ SETREG (0x9a, 0x01);
+ SETREG (0x9b, 0x80);
+ SETREG (0xac, 0x00);
+ }
+
+ if (strcmp (dev->model->name, "canon-canoscan-4400f") == 0)
+ {
+ SETREG (0x06, 0xf0); /* SCANMOD=111, PWRBIT and no GAIN4 */
+ SETREG (0x0b, 0x69); /* 16M only */
+ SETREG (0x1e, 0x20);
+ SETREG (0x22, 0xc8);
+ SETREG (0x23, 0xc8);
+ SETREG (0x5e, 0x3f);
+ SETREG (0x5f, 0xf0);
+ SETREG (0x6b, 0x72);
+ SETREG (0x72, 0x01);
+ SETREG (0x73, 0x03);
+ SETREG (0x80, 0x0c);
+ SETREG (0x87, 0x02); /* MCLOCK -> CK4MAP */
+ SETREG (0x9d, 0x08); /* STEPTIM=2 */
+ SETREG (0xa2, 0x1f);
+ SETREG (0xab, 0x00);
+ sanei_genesys_set_double(dev->reg,REG_EXPR,0x9c40);
+ sanei_genesys_set_double(dev->reg,REG_EXPG,0x9c40);
+ sanei_genesys_set_double(dev->reg,REG_EXPB,0x9c40);
+ }
+
+ if (strcmp (dev->model->name, "canon-canoscan-8400f") == 0)
+ {
+ SETREG (0x03, 0x1c);
+ SETREG (0x06, 0xd0); /* SCANMOD=110, PWRBIT and no GAIN4 */
+ SETREG (0x0a, 0x10);
+ SETREG (0x22, 0x50);
+ SETREG (0x23, 0x50);
+ SETREG (0x5e, 0x85);
+ SETREG (0x6b, 0xb1);
+ SETREG (0x1e, 0xa0);
+ SETREG (0x72, 0x03);
+ SETREG (0x73, 0x04);
+ SETREG (0x7d, 0x20);
+ SETREG (0x80, 0x28);
+ SETREG (0x87, 0x02); /* MCLOCK -> CK4MAP */
+ SETREG (0x9d, 0x08); /* STEPTIM=2 */
+ }
+
+ /* fine tune upon device description */
+ dev->reg[reg_0x05].value &= ~REG05_DPIHW;
+ switch (dev->sensor.optical_res)
+ {
+ case 600:
+ dev->reg[reg_0x05].value |= REG05_DPIHW_600;
+ break;
+ case 1200:
+ dev->reg[reg_0x05].value |= REG05_DPIHW_1200;
+ break;
+ case 2400:
+ dev->reg[reg_0x05].value |= REG05_DPIHW_2400;
+ break;
+ case 4800:
+ dev->reg[reg_0x05].value |= REG05_DPIHW_4800;
+ break;
+ }
+
+ /* initalize calibration reg */
+ memcpy (dev->calib_reg, dev->reg, GENESYS_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ DBGCOMPLETED;
+}
+
+/* Send slope table for motor movement
+ slope_table in machine byte order
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+ SANE_Status
+gl843_send_slope_table (Genesys_Device * dev, int table_nr,
+ uint16_t * slope_table, int steps)
+{
+ SANE_Status status;
+ uint8_t *table;
+ int i;
+ char msg[10000];
+
+ DBG (DBG_proc, "%s (table_nr = %d, steps = %d)\n", __FUNCTION__,
+ table_nr, steps);
+
+ 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;
+ }
+
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sprintf (msg, "write slope %d (%d)=", table_nr, steps);
+ for (i = 0; i < steps; i++)
+ {
+ sprintf (msg+strlen(msg), "%d", slope_table[i]);
+ }
+ DBG (DBG_io, "%s: %s\n", __FUNCTION__, msg);
+ }
+
+
+ /* slope table addresses are fixed : 0x4000, 0x4800, 0x5000, 0x5800, 0x6000 */
+ /* XXX STEF XXX USB 1.1 ? sanei_genesys_write_0x8c (dev, 0x0f, 0x14); */
+ status = write_data (dev, 0x4000 + 0x800 * table_nr, steps * 2, table);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: write data failed writing slope table %d (%s)\n",
+ __FUNCTION__, table_nr, sane_strstatus (status));
+ }
+
+ free (table);
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/* Set values of analog frontend */
+static SANE_Status
+gl843_set_fe (Genesys_Device * dev, uint8_t set)
+{
+ SANE_Status status;
+ uint8_t val;
+ int i;
+
+ DBG (DBG_proc, "gl843_set_fe (%s)\n",
+ set == AFE_INIT ? "init" : set == AFE_SET ? "set" : set ==
+ AFE_POWER_SAVE ? "powersave" : "huh?");
+
+ if (set == AFE_INIT)
+ {
+ DBG (DBG_proc, "gl843_set_fe(): setting DAC %u\n",
+ dev->model->dac_type);
+ sanei_genesys_init_fe (dev);
+ }
+
+ /* check analog frontend type */
+ RIE (sanei_genesys_read_register (dev, REG04, &val));
+ if ((val & REG04_FESET) != 0x00)
+ {
+ /* for now there is no support for AD fe */
+ DBG (DBG_proc, "gl843_set_fe(): unsupported frontend type %d\n",
+ dev->reg[reg_0x04].value & REG04_FESET);
+ return SANE_STATUS_UNSUPPORTED;
+ }
+
+ DBG (DBG_proc, "gl843_set_fe(): frontend reset complete\n");
+
+ for (i = 1; i <= 3; i++)
+ {
+ status = sanei_genesys_fe_write_data (dev, i, dev->frontend.reg[i]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_set_fe: writing reg[%d] failed: %s\n", i,
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ status =
+ sanei_genesys_fe_write_data (dev, 0x20 + i, dev->frontend.offset[i]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_set_fe: writing offset[%d] failed: %s\n", i,
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ if (dev->model->ccd_type == CCD_KVSS080)
+ {
+ 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,
+ "gl843_set_fe: writing sign[%d] failed: %s\n", i,
+ sane_strstatus (status));
+ return status;
+ }
+ }
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ status =
+ sanei_genesys_fe_write_data (dev, 0x28 + i, dev->frontend.gain[i]);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_set_fe: writing gain[%d] failed: %s\n", i,
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+gl843_init_motor_regs_scan (Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ unsigned int exposure,
+ float scan_yres,
+ int scan_step_type,
+ unsigned int scan_lines,
+ unsigned int scan_dummy,
+ unsigned int feed_steps,
+ int scan_power_mode,
+ unsigned int flags)
+{
+ SANE_Status status;
+ int use_fast_fed, coeff;
+ unsigned int lincnt;
+ uint16_t scan_table[1024];
+ uint16_t fast_table[1024];
+ int scan_steps,fast_steps, fast_step_type;
+ unsigned int feedl,factor,dist;
+ Genesys_Register_Set *r;
+ uint32_t z1, z2;
+
+ DBGSTART;
+ DBG (DBG_info, "gl843_init_motor_regs_scan : exposure=%d, "
+ "scan_yres=%g, scan_step_type=%d, scan_lines=%d, scan_dummy=%d, "
+ "feed_steps=%d, scan_power_mode=%d, flags=%x\n",
+ exposure, scan_yres, scan_step_type,
+ scan_lines, scan_dummy, feed_steps, scan_power_mode, flags);
+
+ /* get step multiplier */
+ factor = gl843_get_step_multiplier (reg);
+
+ use_fast_fed = 0;
+
+ if((scan_yres>=300 && feed_steps>900) || (flags & MOTOR_FLAG_FEED))
+ use_fast_fed=1;
+
+ lincnt=scan_lines;
+ sanei_genesys_set_triple(reg,REG_LINCNT,lincnt);
+ DBG (DBG_io, "%s: lincnt=%d\n", __FUNCTION__, lincnt);
+
+ /* compute register 02 value */
+ r = sanei_genesys_get_address (reg, REG02);
+ r->value = 0x00;
+ r->value |= REG02_MTRPWR;
+
+ if (use_fast_fed)
+ r->value |= REG02_FASTFED;
+ else
+ r->value &= ~REG02_FASTFED;
+
+ /* in case of automatic go home, move until home sensor */
+ if (flags & MOTOR_FLAG_AUTO_GO_HOME)
+ r->value |= REG02_AGOHOME | REG02_NOTHOME;
+
+ /* disable backtracking */
+ if ((flags & MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE)
+ ||(scan_yres>=2400)
+ ||(scan_yres>=dev->sensor.optical_res))
+ r->value |= REG02_ACDCDIS;
+
+ /* scan and backtracking slope table */
+ sanei_genesys_slope_table(scan_table,
+ &scan_steps,
+ scan_yres,
+ exposure,
+ dev->motor.base_ydpi,
+ scan_step_type,
+ factor,
+ dev->model->motor_type,
+ gl843_motors);
+ RIE(gl843_send_slope_table (dev, SCAN_TABLE, scan_table, scan_steps*factor));
+ RIE(gl843_send_slope_table (dev, BACKTRACK_TABLE, scan_table, scan_steps*factor));
+
+ /* STEPNO */
+ r = sanei_genesys_get_address (reg, REG_STEPNO);
+ r->value = scan_steps;
+
+ /* FSHDEC */
+ r = sanei_genesys_get_address (reg, REG_FSHDEC);
+ r->value = scan_steps;
+
+ /* fast table */
+ fast_step_type=0;
+ if(scan_step_type<=fast_step_type)
+ {
+ fast_step_type=scan_step_type;
+ }
+ sanei_genesys_slope_table(fast_table,
+ &fast_steps,
+ sanei_genesys_get_lowest_ydpi(dev),
+ exposure,
+ dev->motor.base_ydpi,
+ fast_step_type,
+ factor,
+ dev->model->motor_type,
+ gl843_motors);
+ RIE(gl843_send_slope_table (dev, STOP_TABLE, fast_table, fast_steps*factor));
+ RIE(gl843_send_slope_table (dev, FAST_TABLE, fast_table, fast_steps*factor));
+ RIE(gl843_send_slope_table (dev, HOME_TABLE, fast_table, fast_steps*factor));
+
+ /* FASTNO */
+ r = sanei_genesys_get_address (reg, REG_FASTNO);
+ r->value = fast_steps;
+
+ /* FMOVNO */
+ r = sanei_genesys_get_address (reg, REG_FMOVNO);
+ r->value = fast_steps;
+
+ /* substract acceleration distance from feedl */
+ feedl=feed_steps;
+ feedl<<=scan_step_type;
+
+ dist = scan_steps;
+ if (use_fast_fed)
+ {
+ dist += fast_steps*2;
+ }
+ DBG (DBG_io2, "%s: acceleration distance=%d\n", __FUNCTION__, dist);
+
+ /* get sure when don't insane value : XXX STEF XXX in this case we should
+ * fall back to single table move */
+ if(dist<feedl)
+ feedl -= dist;
+ else
+ feedl = 1;
+
+ sanei_genesys_set_triple(reg,REG_FEEDL,feedl);
+ DBG (DBG_io, "%s: feedl=%d\n", __FUNCTION__, feedl);
+
+ /* doesn't seem to matter that much */
+ sanei_genesys_calculate_zmode2 (use_fast_fed,
+ exposure,
+ scan_table,
+ scan_steps,
+ feedl,
+ scan_steps,
+ &z1,
+ &z2);
+ if(scan_yres>600)
+ {
+ z1=0;
+ z2=0;
+ }
+
+ sanei_genesys_set_triple(reg,REG_Z1MOD,z1);
+ DBG (DBG_info, "gl843_init_motor_regs_scan: z1 = %d\n", z1);
+
+ sanei_genesys_set_triple(reg,REG_Z2MOD,z2);
+ DBG (DBG_info, "gl843_init_motor_regs_scan: z2 = %d\n", z2);
+
+ r = sanei_genesys_get_address (reg, REG1E);
+ r->value &= 0xf0; /* 0 dummy lines */
+ r->value |= scan_dummy; /* dummy lines */
+
+ r = sanei_genesys_get_address (reg, REG67);
+ r->value = 0x3f | (scan_step_type << REG67S_STEPSEL);
+
+ r = sanei_genesys_get_address (reg, REG68);
+ r->value = 0x3f | (scan_step_type << REG68S_FSTPSEL);
+
+ /* steps for STOP table */
+ r = sanei_genesys_get_address (reg, REG_FMOVDEC);
+ r->value = fast_steps;
+
+ /* Vref XXX STEF XXX : optical divider or step type ? */
+ r = sanei_genesys_get_address (reg, 0x80);
+ if (!(dev->model->flags & GENESYS_FLAG_FULL_HWDPI_MODE))
+ {
+ r->value = 0x50;
+ coeff=dev->sensor.optical_res/sanei_genesys_compute_dpihw(dev, scan_yres);
+ if (dev->model->motor_type == MOTOR_KVSS080)
+ {
+ if(coeff>=1)
+ {
+ r->value |= 0x05;
+ }
+ }
+ else {
+ switch(coeff)
+ {
+ case 4:
+ r->value |= 0x0a;
+ break;
+ case 2:
+ r->value |= 0x0f;
+ break;
+ case 1:
+ r->value |= 0x0f;
+ break;
+ }
+ }
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/**@brief compute exposure to use
+ * compute the sensor exposure based on target resolution
+ */
+static int gl843_compute_exposure(Genesys_Device *dev, int xres, int flags)
+{
+ Sensor_Profile *sensor;
+
+ sensor=get_sensor_profile(dev->model->ccd_type, xres, flags);
+ return sensor->exposure;
+}
+
+/** @brief setup optical related registers
+ * start and pixels are expressed in optical sensor resolution coordinate
+ * space.
+ * @param dev device to use
+ * @param reg registers to set up
+ * @param exposure exposure time to use
+ * @param used_res scanning resolution used, may differ from
+ * scan's one
+ * @param start logical start pixel coordinate
+ * @param pixels logical number of pixels to use
+ * @param channels number of color channles used (1 or 3)
+ * @param depth bit depth of the scan (1, 8 or 16 bits)
+ * @param half_ccd SANE_TRUE if timings are such that x coordiantes must be halved
+ * @param color_filter to choose the color channel used in gray scans
+ * @param flags to drive specific settings such no calibration, XPA use ...
+ * @return SANE_STATUS_GOOD if OK
+ */
+static SANE_Status
+gl843_init_optical_regs_scan (Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ unsigned int exposure,
+ 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 startx, endx, used_pixels;
+ unsigned int dpiset, dpihw, factor;
+ unsigned int bytes;
+ unsigned int tgtime; /**> exposure time multiplier */
+ unsigned int cksel; /**> clock per system pixel time in capturing image */
+ Genesys_Register_Set *r;
+ SANE_Status status;
+
+ DBG (DBG_proc, "gl843_init_optical_regs_scan : exposure=%d, "
+ "used_res=%d, start=%d, pixels=%d, channels=%d, depth=%d, "
+ "half_ccd=%d, flags=%x\n",
+ exposure,
+ used_res, start, pixels, channels, depth, half_ccd, flags);
+
+ /* tgtime */
+ tgtime=1;
+ if (dev->model->ccd_type == CCD_G4050 && used_res>2400)
+ {
+ tgtime=2;
+ }
+ DBG (DBG_io2, "%s: tgtime=%d\n", __FUNCTION__, tgtime);
+
+ /* to manage high resolution device while keeping good
+ * low resolution scanning speed, we make hardware dpi vary */
+ dpihw=sanei_genesys_compute_dpihw(dev, used_res);
+ factor=dev->sensor.optical_res/dpihw;
+ DBG (DBG_io2, "%s: dpihw=%d (factor=%d)\n", __FUNCTION__, dpihw, factor);
+
+ /* sensor parameters */
+ gl843_setup_sensor (dev, reg, dpihw, flags);
+
+ /* resolution is divided according to CKSEL which is known once sensor is set up */
+ r = sanei_genesys_get_address (reg, REG18);
+ cksel= (r->value & REG18_CKSEL)+1;
+ DBG (DBG_io2, "%s: cksel=%d\n", __FUNCTION__, cksel);
+ dpiset = used_res * cksel;
+
+ /* start and end coordinate in optical dpi coordinates */
+ startx = (start + dev->sensor.dummy_pixel * tgtime)/cksel;
+
+ used_pixels=pixels/cksel;
+ endx = startx + used_pixels;
+
+ /* pixel coordinate factor correction when used dpihw is not maximal one */
+ startx/=factor;
+ endx/=factor;
+ used_pixels=endx-startx;
+
+ /* in case of stagger we have to start at an odd coordinate */
+ if ((flags & OPTICAL_FLAG_STAGGER)
+ &&((startx & 1)==0))
+ {
+ startx++;
+ endx++;
+ }
+
+ status = gl843_set_fe (dev, AFE_SET);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to set frontend: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* enable shading */
+ r = sanei_genesys_get_address (reg, REG01);
+ 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;
+ }
+ if(dpihw>600)
+ {
+ r->value |= REG01_SHDAREA;
+ }
+ else
+ {
+ r->value &= ~REG01_SHDAREA;
+ }
+
+ r = sanei_genesys_get_address (reg, REG03);
+ r->value &= ~REG03_AVEENB;
+ if (flags & OPTICAL_FLAG_DISABLE_LAMP)
+ r->value &= ~REG03_LAMPPWR;
+ else
+ r->value |= REG03_LAMPPWR;
+
+ /* select XPA */
+ r->value &= ~REG03_XPASEL;
+ if (flags & OPTICAL_FLAG_USE_XPA)
+ {
+ r->value |= REG03_XPASEL;
+ }
+
+ /* BW threshold */
+ r = sanei_genesys_get_address (reg, REG2E);
+ r->value = dev->settings.threshold;
+ r = sanei_genesys_get_address (reg, REG2F);
+ r->value = dev->settings.threshold;
+
+ /* monochrome / color scan */
+ r = sanei_genesys_get_address (reg, REG04);
+ 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
+ r->value |= 0x10; /* mono */
+
+ /* register 05 */
+ r = sanei_genesys_get_address (reg, REG05);
+
+ /* set up dpihw */
+ r->value &= ~REG05_DPIHW;
+ switch(dpihw)
+ {
+ case 600:
+ r->value |= REG05_DPIHW_600;
+ break;
+ case 1200:
+ r->value |= REG05_DPIHW_1200;
+ break;
+ case 2400:
+ r->value |= REG05_DPIHW_2400;
+ break;
+ case 4800:
+ r->value |= REG05_DPIHW_4800;
+ break;
+ }
+
+ /* enable gamma tables */
+ if (flags & OPTICAL_FLAG_DISABLE_GAMMA)
+ r->value &= ~REG05_GMMENB;
+ else
+ r->value |= REG05_GMMENB;
+
+ if(half_ccd)
+ {
+ sanei_genesys_set_double(reg,REG_DPISET,dpiset*4);
+ DBG (DBG_io2, "%s: dpiset used=%d\n", __FUNCTION__, dpiset*4);
+ }
+ else
+ {
+ sanei_genesys_set_double(reg,REG_DPISET,dpiset);
+ DBG (DBG_io2, "%s: dpiset used=%d\n", __FUNCTION__, dpiset);
+ }
+
+ sanei_genesys_set_double(reg,REG_STRPIXEL,startx/tgtime);
+ sanei_genesys_set_double(reg,REG_ENDPIXEL,endx/tgtime);
+
+ /* words(16bit) before gamma, conversion to 8 bit or lineart */
+ words_per_line = (used_pixels * dpiset) / dpihw;
+ bytes = depth / 8;
+ if (depth == 1)
+ {
+ words_per_line = (words_per_line >> 3) + ((words_per_line & 7) ? 1 : 0);
+ }
+ else
+ {
+ words_per_line *= bytes;
+ }
+
+ dev->wpl = words_per_line;
+ dev->bpl = words_per_line;
+
+ DBG (DBG_io2, "%s: used_pixels=%d\n", __FUNCTION__, used_pixels);
+ DBG (DBG_io2, "%s: pixels =%d\n", __FUNCTION__, pixels);
+ DBG (DBG_io2, "%s: depth =%d\n", __FUNCTION__, depth);
+ DBG (DBG_io2, "%s: dev->bpl =%lu\n", __FUNCTION__, (unsigned long) dev->bpl);
+ DBG (DBG_io2, "%s: dev->len =%lu\n", __FUNCTION__, (unsigned long)dev->len);
+ DBG (DBG_io2, "%s: dev->dist =%lu\n", __FUNCTION__, (unsigned long)dev->dist);
+
+ words_per_line *= channels;
+
+ /* MAXWD is expressed in 2 words unit */
+ /* nousedspace = (mem_bank_range * 1024 / 256 -1 ) * 4; */
+ sanei_genesys_set_triple(reg,REG_MAXWD,(words_per_line)>>1);
+ DBG (DBG_io2, "%s: words_per_line used=%d\n", __FUNCTION__, words_per_line);
+
+ sanei_genesys_set_double(reg,REG_LPERIOD,exposure/tgtime);
+ DBG (DBG_io2, "%s: exposure used=%d\n", __FUNCTION__, exposure/tgtime);
+
+ r = sanei_genesys_get_address (reg, REG_DUMMY);
+ r->value = dev->sensor.dummy_pixel * tgtime;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/* 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
+gl843_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 scan_mode,
+ int color_filter,
+ unsigned int flags)
+{
+ int used_res;
+ int start, used_pixels;
+ int bytes_per_line;
+ int move;
+ unsigned int lincnt; /**> line count to scan */
+ unsigned int oflags, mflags; /**> optical and motor flags */
+ int exposure;
+ 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,
+ "gl843_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);
+
+
+ /* we have 2 domains for ccd: xres below or above half ccd max dpi */
+ if (dev->sensor.optical_res < 4 * 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 /= 4;
+
+ /* stagger starting at 2400, and not applied for calibration */
+ stagger = 0;
+ if ( (yres>1200)
+ && ((flags & SCAN_FLAG_IGNORE_LINE_DISTANCE)==0)
+ && (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE))
+ {
+ stagger = (4 * yres) / dev->motor.base_ydpi;
+ }
+ DBG (DBG_info, "%s : stagger=%d lines\n", __FUNCTION__, stagger);
+
+ /* we enable true gray for cis scanners only, and just when doing
+ * scan since color calibration is OK for this mode
+ */
+ oflags = 0;
+ if (flags & SCAN_FLAG_DISABLE_SHADING)
+ oflags |= OPTICAL_FLAG_DISABLE_SHADING;
+ if (flags & SCAN_FLAG_DISABLE_GAMMA)
+ oflags |= OPTICAL_FLAG_DISABLE_GAMMA;
+ if (flags & SCAN_FLAG_DISABLE_LAMP)
+ oflags |= OPTICAL_FLAG_DISABLE_LAMP;
+ if (flags & SCAN_FLAG_CALIBRATION)
+ oflags |= OPTICAL_FLAG_DISABLE_DOUBLE;
+ if(stagger)
+ oflags |= OPTICAL_FLAG_STAGGER;
+ if (flags & SCAN_FLAG_USE_XPA)
+ oflags |= OPTICAL_FLAG_USE_XPA;
+
+ /** @brief compute used resolution */
+ if (flags & SCAN_FLAG_USE_OPTICAL_RES)
+ {
+ used_res = optical_res;
+ }
+ else
+ {
+ /* resolution is choosen from a fixed list and can be used directly
+ * unless we have ydpi higher than sensor's maximum one */
+ if(xres>optical_res)
+ used_res=optical_res;
+ else
+ used_res = xres;
+ }
+
+ /* compute scan parameters values */
+ /* pixels are allways given at full optical resolution */
+ /* use detected left margin and fixed value */
+ /* start */
+ start = startx;
+
+ /* compute correct pixels number */
+ used_pixels = (pixels * optical_res) / xres;
+ DBG (DBG_info, "%s: used_pixels=%d\n", __FUNCTION__, used_pixels);
+
+ /* round up pixels number if needed */
+ if (used_pixels * xres < pixels * optical_res)
+ used_pixels++;
+
+ /* we want even number of pixels here */
+ if(used_pixels & 1)
+ used_pixels++;
+
+ dummy = 0;
+ /* dummy = 1; XXX STEF XXX */
+
+ /* 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 */
+ if(flags & SCAN_FLAG_FEEDING)
+ {
+ exposure=gl843_compute_exposure (dev, sanei_genesys_get_lowest_ydpi(dev), oflags);
+ scan_step_type=sanei_genesys_compute_step_type (gl843_motors, dev->model->motor_type, exposure);
+ }
+ else
+ {
+ exposure = gl843_compute_exposure (dev, used_res, oflags);
+ scan_step_type = sanei_genesys_compute_step_type(gl843_motors, dev->model->motor_type, exposure);
+ }
+
+ DBG (DBG_info, "%s : exposure=%d pixels\n", __FUNCTION__, exposure);
+ DBG (DBG_info, "%s : scan_step_type=%d\n", __FUNCTION__, scan_step_type);
+
+ /*** 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) && (scan_mode == SCAN_MODE_LINEART))
+ {
+ depth = 8;
+ }
+ /* no 16 bit gamma for this ASIC */
+ if (depth == 16)
+ {
+ flags |= SCAN_FLAG_DISABLE_GAMMA;
+ oflags |= OPTICAL_FLAG_DISABLE_GAMMA;
+ }
+
+ /* now _LOGICAL_ optical values used are known, setup registers */
+ status = gl843_init_optical_regs_scan (dev,
+ reg,
+ exposure,
+ used_res,
+ start,
+ used_pixels,
+ channels,
+ depth,
+ half_ccd,
+ color_filter,
+ oflags);
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ /*** motor parameters ***/
+
+ /* it seems base_dpi of the G4050 motor is changed above 600 dpi*/
+ if (dev->model->motor_type == MOTOR_G4050 && yres>600)
+ {
+ dev->ld_shift_r = (dev->model->ld_shift_r*3800)/dev->motor.base_ydpi;
+ dev->ld_shift_g = (dev->model->ld_shift_g*3800)/dev->motor.base_ydpi;
+ dev->ld_shift_b = (dev->model->ld_shift_b*3800)/dev->motor.base_ydpi;
+ }
+ else
+ {
+ dev->ld_shift_r = dev->model->ld_shift_r;
+ dev->ld_shift_g = dev->model->ld_shift_g;
+ dev->ld_shift_b = dev->model->ld_shift_b;
+ }
+
+ /* max_shift */
+ /* scanned area must be enlarged by max color shift needed */
+ max_shift=sanei_genesys_compute_max_shift(dev,channels,yres,flags);
+
+ /* lines to scan */
+ lincnt = lines + max_shift + stagger;
+
+ /* add tl_y to base movement */
+ move = starty;
+ DBG (DBG_info, "gl843_init_scan_regs: move=%d steps\n", move);
+
+
+ mflags=0;
+ if(flags & SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE)
+ mflags|=MOTOR_FLAG_DISABLE_BUFFER_FULL_MOVE;
+ if(flags & SCAN_FLAG_FEEDING)
+ mflags|=MOTOR_FLAG_FEED;
+ if (flags & SCAN_FLAG_USE_XPA)
+ mflags |= MOTOR_FLAG_USE_XPA;
+
+ status = gl843_init_motor_regs_scan (dev,
+ reg,
+ exposure,
+ slope_dpi,
+ scan_step_type,
+ dev->model->is_cis ? lincnt * channels : lincnt,
+ dummy,
+ move,
+ scan_power_mode,
+ mflags);
+ 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;
+
+ /* since we don't have sheetfed scanners to handle,
+ * use huge read buffer */
+ /* TODO find the best size according to settings */
+ requested_buffer_size = 16 * 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,
+ "gl843_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;
+ DBG (DBG_info, "%s: current_setup.pixels=%d\n", __FUNCTION__, dev->current_setup.pixels);
+ dev->current_setup.lines = lincnt;
+ dev->current_setup.depth = depth;
+ dev->current_setup.channels = channels;
+ dev->current_setup.exposure_time = exposure;
+ 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;
+
+ 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, "gl843_init_scan_regs: total bytes to send = %lu\n",
+ (u_long) dev->total_bytes_to_read);
+
+ DBG (DBG_proc, "gl843_init_scan_regs: completed\n");
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl843_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;
+ int stagger;
+
+ int max_shift;
+
+ SANE_Bool half_ccd; /* false: full CCD res is used, true, half max CCD res is used */
+ int optical_res;
+ int oflags;
+
+ DBG (DBG_info,
+ "gl843_calculate_current_setup settings:\n"
+ "Resolution: %ux%uDPI\n"
+ "Lines : %u\n"
+ "PPL : %u\n"
+ "Startpos : %.3f/%.3f\n"
+ "Scan mode : %d\n\n",
+ dev->settings.xres,
+ 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 == 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;
+
+ /* start */
+ start = SANE_UNFIX (dev->model->x_offset);
+ start += dev->settings.tl_x;
+ start = (start * dev->sensor.optical_res) / MM_PER_INCH;
+
+ /* optical flags */
+ oflags=0;
+ if(dev->settings.scan_method==SCAN_METHOD_TRANSPARENCY)
+ {
+ oflags=OPTICAL_FLAG_USE_XPA;
+ }
+
+ xres = dev->settings.xres;
+ yres = dev->settings.yres;
+ startx = start;
+ pixels = dev->settings.pixels;
+ lines = dev->settings.lines;
+
+ DBG (DBG_info,
+ "gl843_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 < 4 * 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 /= 4;
+
+ /* stagger */
+ if ((!half_ccd) && (dev->model->flags & GENESYS_FLAG_STAGGERED_LINE))
+ stagger = (4 * yres) / dev->motor.base_ydpi;
+ else
+ stagger = 0;
+ DBG (DBG_info, "%s: stagger=%d lines\n", __FUNCTION__, stagger);
+
+ if(xres<=optical_res)
+ used_res = xres;
+ else
+ used_res=optical_res;
+
+ /* compute scan parameters values */
+ /* pixels are allways given at half or full CCD optical resolution */
+ /* use detected left margin and fixed value */
+
+ /* compute correct pixels number */
+ used_pixels = (pixels * optical_res) / xres;
+ DBG (DBG_info, "%s: used_pixels=%d\n", __FUNCTION__, used_pixels);
+
+ /* exposure */
+ exposure = gl843_compute_exposure (dev, used_res, oflags);
+ DBG (DBG_info, "%s : exposure=%d pixels\n", __FUNCTION__, exposure);
+
+ /* it seems base_dpi of the G4050 motor is changed above 600 dpi*/
+ if (dev->model->motor_type == MOTOR_G4050 && yres>600)
+ {
+ dev->ld_shift_r = (dev->model->ld_shift_r*3800)/dev->motor.base_ydpi;
+ dev->ld_shift_g = (dev->model->ld_shift_g*3800)/dev->motor.base_ydpi;
+ dev->ld_shift_b = (dev->model->ld_shift_b*3800)/dev->motor.base_ydpi;
+ }
+ else
+ {
+ dev->ld_shift_r = dev->model->ld_shift_r;
+ dev->ld_shift_g = dev->model->ld_shift_g;
+ dev->ld_shift_b = dev->model->ld_shift_b;
+ }
+
+ /* 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;
+ DBG (DBG_info, "%s: current_setup.pixels=%d\n", __FUNCTION__, dev->current_setup.pixels);
+ dev->current_setup.lines = lincnt;
+ dev->current_setup.depth = depth;
+ dev->current_setup.channels = channels;
+ dev->current_setup.exposure_time = exposure;
+ 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, "gl843_calculate_current_setup: completed\n");
+ return SANE_STATUS_GOOD;
+}
+
+static void
+gl843_set_motor_power (Genesys_Register_Set * regs, SANE_Bool set)
+{
+
+ DBG (DBG_proc, "gl843_set_motor_power\n");
+
+ if (set)
+ {
+ sanei_genesys_set_reg_from_set (regs, REG02,
+ sanei_genesys_read_reg_from_set (regs,
+ REG02)
+ | REG02_MTRPWR);
+ }
+ else
+ {
+ sanei_genesys_set_reg_from_set (regs, REG02,
+ sanei_genesys_read_reg_from_set (regs,
+ REG02)
+ & ~REG02_MTRPWR);
+ }
+}
+
+static void
+gl843_set_lamp_power (Genesys_Device * dev,
+ Genesys_Register_Set * regs, SANE_Bool set)
+{
+ Genesys_Register_Set *r;
+ int i;
+ uint8_t val;
+
+ val = sanei_genesys_read_reg_from_set (regs, REG03);
+ if (set)
+ {
+ val |= REG03_LAMPPWR;
+ sanei_genesys_set_reg_from_set (regs, REG03, val);
+ for (i = 0; i < 6; i++)
+ {
+ r = sanei_genesys_get_address (regs, 0x10 + i);
+ r->value = dev->sensor.regs_0x10_0x1d[i];
+ }
+ }
+ else
+ {
+ val &= ~REG03_LAMPPWR;
+ sanei_genesys_set_reg_from_set (regs, REG03, val);
+ for (i = 0; i < 6; i++)
+ {
+ r = sanei_genesys_get_address (regs, 0x10 + i);
+ r->value = 0x00;
+ }
+ }
+}
+
+/**
+ * for fast power saving methods only, like disabling certain amplifiers
+ * @param dev device to use
+ * @param enable true to set inot powersaving
+ * */
+static SANE_Status
+gl843_save_power (Genesys_Device * dev, SANE_Bool enable)
+{
+ uint8_t val;
+ SANE_Status status;
+
+ DBG (DBG_proc, "gl843_save_power: enable = %d\n", enable);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+
+ /* switch KV-SS080 lamp off */
+ if (dev->model->gpo_type == GPO_KVSS080)
+ {
+ RIE(sanei_genesys_read_register (dev, REG6C, &val));
+ if(enable)
+ val &= 0xef;
+ else
+ val |= 0x10;
+ RIE(sanei_genesys_write_register(dev,REG6C,val));
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+static SANE_Status
+gl843_set_powersaving (Genesys_Device * dev, int delay /* in minutes */ )
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+
+ DBG (DBG_proc, "gl843_set_powersaving (delay = %d)\n", delay);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+
+ DBGCOMPLETED;
+ return status;
+}
+
+#ifndef UNIT_TESTING
+static
+#endif
+ SANE_Status
+gl843_start_action (Genesys_Device * dev)
+{
+ return sanei_genesys_write_register (dev, 0x0f, 0x01);
+}
+
+static SANE_Status
+gl843_stop_action (Genesys_Device * dev)
+{
+ 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);
+ }
+
+ val40 = 0;
+ status = sanei_genesys_read_register (dev, REG40, &val40);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read home sensor: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ DBG (DBG_proc, "%s: completed\n", __FUNCTION__);
+ return status;
+ }
+
+ /* only stop action if needed */
+ if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG))
+ {
+ DBG (DBG_info, "%s: already stopped\n", __FUNCTION__);
+ DBG (DBG_proc, "%s: completed\n", __FUNCTION__);
+ return SANE_STATUS_GOOD;
+ }
+
+ /* ends scan 646 */
+ val = sanei_genesys_read_reg_from_set (dev->reg, REG01);
+ val &= ~REG01_SCAN;
+ sanei_genesys_set_reg_from_set (dev->reg, REG01, val);
+ status = sanei_genesys_write_register (dev, REG01, val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to write register 01: %s\n", __FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+ usleep (100 * 1000);
+
+ loop = 10;
+ while (loop > 0)
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ if (DBG_LEVEL >= DBG_io)
+ {
+ sanei_genesys_print_status (val);
+ }
+ val40 = 0;
+ 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;
+ }
+
+ /* if scanner is in command mode, we are done */
+ if (!(val40 & REG40_DATAENB) && !(val40 & REG40_MOTMFLG)
+ && !(val & REG41_MOTORENB))
+ {
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ usleep (100 * 1000);
+ loop--;
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_IO_ERROR;
+}
+
+static SANE_Status
+gl843_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,
+ "gl843_get_paper_sensor: failed to read gpio: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ *paper_loaded = (val & 0x1) == 0;
+ return SANE_STATUS_GOOD;
+
+ return SANE_STATUS_INVAL;
+}
+
+static SANE_Status
+gl843_eject_document (Genesys_Device * dev)
+{
+ DBG (DBG_proc, "%s: not implemented \n", __FUNCTION__);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+ return SANE_STATUS_GOOD;
+}
+
+
+static SANE_Status
+gl843_load_document (Genesys_Device * dev)
+{
+ DBG (DBG_proc, "%s: not implemented \n", __FUNCTION__);
+ if (dev == NULL)
+ return SANE_STATUS_INVAL;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * detects end of document and adjust current scan
+ * to take it into account
+ * used by sheetfed scanners
+ */
+static SANE_Status
+gl843_detect_document_end (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ SANE_Bool paper_loaded;
+ unsigned int scancnt = 0;
+ int flines, channels, depth, bytes_remain, sublines,
+ bytes_to_flush, lines, sub_bytes, tmp, read_bytes_left;
+ DBG (DBG_proc, "%s: begin\n", __FUNCTION__);
+
+ RIE (gl843_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;
+
+ channels = dev->current_setup.channels;
+ depth = dev->current_setup.depth;
+ read_bytes_left = (int) dev->read_bytes_left;
+ DBG (DBG_io, "gl843_detect_document_end: read_bytes_left=%d\n",
+ read_bytes_left);
+
+ /* get lines read */
+ status = sanei_genesys_read_scancnt (dev, &scancnt);
+ if (status != SANE_STATUS_GOOD)
+ {
+ flines = 0;
+ }
+ else
+ {
+ /* compute number of line read */
+ tmp = (int) dev->total_bytes_read;
+ if (depth == 1 || dev->settings.scan_mode == SCAN_MODE_LINEART)
+ flines = tmp * 8 / dev->settings.pixels / channels;
+ else
+ flines = tmp / (depth / 8) / dev->settings.pixels / channels;
+
+ /* number of scanned lines, but no read yet */
+ flines = scancnt - flines;
+
+ DBG (DBG_io,
+ "gl843_detect_document_end: %d scanned but not read lines\n",
+ flines);
+ }
+
+ /* adjust number of bytes to read
+ * we need to read the final bytes which are word per line * number of last lines
+ * to have doc leaving feeder */
+ lines =
+ (SANE_UNFIX (dev->model->post_scan) * dev->current_setup.yres) /
+ MM_PER_INCH + flines;
+ DBG (DBG_io, "gl843_detect_document_end: adding %d line to flush\n",
+ lines);
+
+ /* number of bytes to read from scanner to get document out of it after
+ * end of document dectected by hardware sensor */
+ bytes_to_flush = lines * dev->wpl;
+
+ /* if we are already close to end of scan, flushing isn't needed */
+ if (bytes_to_flush < read_bytes_left)
+ {
+ /* we take all these step to work around an overflow on some plateforms */
+ tmp = (int) dev->total_bytes_read;
+ DBG (DBG_io, "gl843_detect_document_end: tmp=%d\n", tmp);
+ bytes_remain = (int) dev->total_bytes_to_read;
+ DBG (DBG_io, "gl843_detect_document_end: bytes_remain=%d\n",
+ bytes_remain);
+ bytes_remain = bytes_remain - tmp;
+ DBG (DBG_io, "gl843_detect_document_end: bytes_remain=%d\n",
+ bytes_remain);
+
+ /* remaining lines to read by frontend for the current scan */
+ if (depth == 1 || dev->settings.scan_mode == SCAN_MODE_LINEART)
+ {
+ flines = bytes_remain * 8 / dev->settings.pixels / channels;
+ }
+ else
+ flines = bytes_remain / (depth / 8)
+ / dev->settings.pixels / channels;
+ DBG (DBG_io, "gl843_detect_document_end: flines=%d\n", flines);
+
+ if (flines > lines)
+ {
+ /* change the value controlling communication with the frontend :
+ * total bytes to read is current value plus the number of remaining lines
+ * multiplied by bytes per line */
+ sublines = flines - lines;
+
+ if (depth == 1 || dev->settings.scan_mode == SCAN_MODE_LINEART)
+ sub_bytes =
+ ((dev->settings.pixels * sublines) / 8 +
+ (((dev->settings.pixels * sublines) % 8) ? 1 : 0)) *
+ channels;
+ else
+ sub_bytes =
+ dev->settings.pixels * sublines * channels * (depth / 8);
+
+ dev->total_bytes_to_read -= sub_bytes;
+
+ /* then adjust the physical bytes to read */
+ if (read_bytes_left > sub_bytes)
+ {
+ dev->read_bytes_left -= sub_bytes;
+ }
+ else
+ {
+ dev->total_bytes_to_read = dev->total_bytes_read;
+ dev->read_bytes_left = 0;
+ }
+
+ DBG (DBG_io, "gl843_detect_document_end: sublines=%d\n",
+ sublines);
+ DBG (DBG_io, "gl843_detect_document_end: subbytes=%d\n",
+ sub_bytes);
+ DBG (DBG_io,
+ "gl843_detect_document_end: total_bytes_to_read=%lu\n",
+ (unsigned long) dev->total_bytes_to_read);
+ DBG (DBG_io,
+ "gl843_detect_document_end: read_bytes_left=%d\n",
+ read_bytes_left);
+ }
+ }
+ else
+ {
+ DBG (DBG_io, "gl843_detect_document_end: no flushing needed\n");
+ }
+ }
+
+ DBG (DBG_proc, "%s: finished\n", __FUNCTION__);
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief disable XPA slider motor
+ * toggle gpios to switch disble XPA slider motor
+ * @param dev device to set up
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status gl843_xpa_motor_off(Genesys_Device *dev)
+{
+ uint8_t val;
+ SANE_Status status=SANE_STATUS_GOOD;
+
+ DBGSTART;
+
+ /* unset GPOADF */
+ RIE (sanei_genesys_read_register (dev, REG6B, &val));
+ val &= ~REG6B_GPOADF;
+ RIE (sanei_genesys_write_register (dev, REG6B, val));
+
+ RIE (sanei_genesys_read_register (dev, REGA8, &val));
+ val |= REGA8_GPO27;
+ RIE (sanei_genesys_write_register (dev, REGA8, val));
+
+ RIE (sanei_genesys_read_register (dev, REGA9, &val));
+ val &= ~REGA9_GPO31;
+ RIE (sanei_genesys_write_register (dev, REGA9, val));
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/** @brief enable XPA slider motor
+ * toggle gpios to switch enable XPA slider motor
+ * @param dev device to set up
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status gl843_xpa_motor_on(Genesys_Device *dev)
+{
+ uint8_t val;
+ SANE_Status status=SANE_STATUS_GOOD;
+
+ DBGSTART;
+
+ /* set MULTFILM et GPOADF */
+ RIE (sanei_genesys_read_register (dev, REG6B, &val));
+ val |=REG6B_MULTFILM|REG6B_GPOADF;
+ RIE (sanei_genesys_write_register (dev, REG6B, val));
+
+ RIE (sanei_genesys_read_register (dev, REG6C, &val));
+ val &= ~REG6C_GPIO15;
+ RIE (sanei_genesys_write_register (dev, REG6C, val));
+
+ /* Motor power ? No move at all without this one */
+ RIE (sanei_genesys_read_register (dev, REGA6, &val));
+ val |= REGA6_GPIO20;
+ RIE (sanei_genesys_write_register(dev,REGA6,val));
+
+ RIE (sanei_genesys_read_register (dev, REGA8, &val));
+ val &= ~REGA8_GPO27;
+ RIE (sanei_genesys_write_register (dev, REGA8, val));
+
+ RIE (sanei_genesys_read_register (dev, REGA9, &val));
+ val |= REGA9_GPO32|REGA9_GPO31;
+ RIE (sanei_genesys_write_register (dev, REGA9, val));
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/** @brief light XPA lamp
+ * toggle gpios to switch off regular lamp and light on the
+ * XPA light
+ * @param dev device to set up
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status gl843_xpa_lamp_on(Genesys_Device *dev)
+{
+ uint8_t val;
+ SANE_Status status=SANE_STATUS_GOOD;
+
+ DBGSTART;
+
+ /* REGA6 */
+ RIE(sanei_genesys_read_register(dev, REGA6, &val));
+
+ /* cut regular lamp power */
+ val &= ~(REGA6_GPIO24|REGA6_GPIO23);
+
+ /* set XPA lamp power */
+ val |= REGA6_GPIO22 | REGA6_GPIO21 | REGA6_GPIO19;
+
+ RIE(sanei_genesys_write_register(dev, REGA6, val));
+
+ RIE(sanei_genesys_read_register(dev, REGA7, &val));
+ val|=REGA7_GPOE24; /* lamp 1 off GPOE 24 */
+ val|=REGA7_GPOE23; /* lamp 2 off GPOE 23 */
+ val|=REGA7_GPOE22; /* full XPA lamp power */
+ RIE(sanei_genesys_write_register(dev, REGA7, val));
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/* Send the low-level scan command */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl843_begin_scan (Genesys_Device * dev, Genesys_Register_Set * reg,
+ SANE_Bool start_motor)
+{
+ SANE_Status status;
+ uint8_t val,r03;
+ uint16_t dpiset, dpihw;
+
+ DBGSTART;
+
+ /* get back the target dpihw */
+ sanei_genesys_get_double (reg, REG_DPISET, &dpiset);
+ dpihw = sanei_genesys_compute_dpihw (dev, dpiset);
+
+ /* set up GPIO for scan */
+ switch(dev->model->gpo_type)
+ {
+ /* KV case */
+ case GPO_KVSS080:
+ RIE (sanei_genesys_write_register (dev, REGA9, 0x00));
+ RIE (sanei_genesys_write_register (dev, REGA6, 0xf6));
+ /* blinking led */
+ RIE (sanei_genesys_write_register (dev, 0x7e, 0x04));
+ break;
+ case GPO_G4050:
+ RIE (sanei_genesys_write_register (dev, REGA7, 0xfe));
+ RIE (sanei_genesys_write_register (dev, REGA8, 0x3e));
+ RIE (sanei_genesys_write_register (dev, REGA9, 0x06));
+ switch (dpihw)
+ {
+ case 1200:
+ case 2400:
+ case 4800:
+ RIE (sanei_genesys_write_register (dev, REG6C, 0x60));
+ RIE (sanei_genesys_write_register (dev, REGA6, 0x46));
+ break;
+ default: /* 600 dpi case */
+ RIE (sanei_genesys_write_register (dev, REG6C, 0x20));
+ RIE (sanei_genesys_write_register (dev, REGA6, 0x44));
+ }
+
+ /* turn on XPA lamp if XPA is selected and lamp power on*/
+ r03 = sanei_genesys_read_reg_from_set (reg, REG03);
+ if ((r03 & REG03_XPASEL) && (r03 & REG03_LAMPPWR))
+ {
+ RIE(gl843_xpa_lamp_on(dev));
+ }
+
+ /* enable XPA lamp motor */
+ if (r03 & REG03_XPASEL)
+ {
+ RIE(gl843_xpa_motor_on(dev));
+ }
+
+ /* blinking led */
+ RIE (sanei_genesys_write_register (dev, REG7E, 0x01));
+ break;
+ case GPO_CS4400F:
+ case GPO_CS8400F:
+ default:
+ break;
+ }
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register
+ (dev, REG0D, REG0D_CLRLNCNT | REG0D_CLRMCNT));
+
+ /* enable scan and motor */
+ RIE (sanei_genesys_read_register (dev, REG01, &val));
+ val |= REG01_SCAN;
+ RIE (sanei_genesys_write_register (dev, REG01, val));
+
+ if (start_motor)
+ {
+ RIE (sanei_genesys_write_register (dev, REG0F, 1));
+ }
+ else
+ {
+ RIE (sanei_genesys_write_register (dev, REG0F, 0));
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/* Send the stop scan command */
+#ifndef UNIT_TESTING
+static
+#endif
+ SANE_Status
+gl843_end_scan (Genesys_Device * dev, Genesys_Register_Set * reg,
+ SANE_Bool check_stop)
+{
+ SANE_Status status;
+ uint8_t val;
+
+ DBG (DBG_proc, "gl843_end_scan (check_stop = %d)\n", check_stop);
+ if (reg == NULL)
+ return SANE_STATUS_INVAL;
+
+ /* post scan gpio */
+ RIE(sanei_genesys_write_register(dev,0x7e,0x00));
+
+ /* turn off XPA lamp if XPA is selected and lamp power on*/
+ val = sanei_genesys_read_reg_from_set (reg, REG03);
+ if (val & (REG03_XPASEL|REG03_LAMPPWR))
+ {
+ sanei_genesys_read_register (dev, REGA6, &val);
+
+ /* switch on regular lamp */
+ val |= 0x40;
+
+ /* no XPA lamp power (2 bits for level: __11 ____) */
+ val &= ~0x30;
+
+ RIE (sanei_genesys_write_register (dev, REGA6, val));
+ }
+
+ if (dev->model->is_sheetfed == SANE_TRUE)
+ {
+ status = SANE_STATUS_GOOD;
+ }
+ else /* flat bed scanners */
+ {
+ status = gl843_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_end_scan: failed to stop: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/** @brief park XPA lamp
+ * park the XPA lamp if needed
+ */
+static SANE_Status gl843_park_xpa_lamp (Genesys_Device * dev)
+{
+ Genesys_Register_Set local_reg[GENESYS_GL843_MAX_REGS];
+ SANE_Status status;
+ Genesys_Register_Set *r;
+ uint8_t val;
+ int loop = 0;
+
+ DBGSTART;
+
+ /* copy scan settings */
+ memcpy (local_reg, dev->reg, GENESYS_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ /* set a huge feedl and reverse direction */
+ sanei_genesys_set_triple(local_reg,REG_FEEDL,0xbdcd);
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT | REG0D_CLRMCNT));
+
+ /* 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;
+
+ /* write to scanner and start action */
+ RIE (dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL843_MAX_REGS));
+ RIE (gl843_xpa_motor_on(dev));
+ status = gl843_start_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to start motor: %s\n",__FUNCTION__, sane_strstatus (status));
+ gl843_stop_action (dev);
+ /* restore original registers */
+ dev->model->cmd_set->bulk_write_register (dev, dev->reg, GENESYS_GL843_MAX_REGS);
+ return status;
+ }
+
+ while (loop < 600) /* do not wait longer then 60 seconds */
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "%s: failed to read home sensor: %s\n",__FUNCTION__,
+ sane_strstatus (status));
+ return status;
+ }
+ if (DBG_LEVEL >= DBG_io2)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ if (val & REG41_HOMESNR) /* home sensor */
+ {
+ DBG (DBG_info, "%s: reached home position\n",__FUNCTION__);
+ DBG (DBG_proc, "%s: finished\n",__FUNCTION__);
+
+ /* clear GPOADF to avoid reparking again */
+ sanei_genesys_read_register (dev, REG6B, &val);
+ val &= ~REG6B_GPOADF;
+ sanei_genesys_write_register (dev, REG6B, val);
+
+ /* disable XPA slider motor */
+ gl843_xpa_motor_off(dev);
+ return SANE_STATUS_GOOD;
+ }
+ usleep (100000); /* sleep 100 ms */
+ ++loop;
+ }
+
+ /* we are not parked here.... should we fail ? */
+ DBG (DBG_info, "%s: XPA lamp is not parked\n", __FUNCTION__);
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief Moves the slider to the home (top) position slowly
+ * */
+#ifndef UNIT_TESTING
+static
+#endif
+ SANE_Status
+gl843_slow_back_home (Genesys_Device * dev, SANE_Bool wait_until_home)
+{
+ Genesys_Register_Set local_reg[GENESYS_GL843_MAX_REGS];
+ SANE_Status status;
+ Genesys_Register_Set *r;
+ uint8_t val;
+ float resolution;
+ int loop = 0;
+
+ DBG (DBG_proc, "gl843_slow_back_home (wait_until_home = %d)\n",
+ wait_until_home);
+
+ if (dev->model->gpo_type == GPO_G4050)
+ {
+ /* test if we need to park XPA lamp, we check GPOADF */
+ RIE (sanei_genesys_read_register (dev, REG6B, &val));
+ if(val & REG6B_GPOADF)
+ {
+ RIE(gl843_park_xpa_lamp(dev));
+ }
+ }
+
+ /* regular slow back home */
+ dev->scanhead_position_in_steps = 0;
+
+ /* first read gives HOME_SENSOR true */
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to read home sensor: %s\n", __FUNCTION__, sane_strstatus (status));
+ return status;
+ }
+ usleep (100000); /* sleep 100 ms */
+
+ /* second is reliable */
+ status = sanei_genesys_get_status (dev, &val);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_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);
+ }
+ if (val & HOMESNR) /* is sensor at home? */
+ {
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+ }
+
+ memcpy (local_reg, dev->reg, GENESYS_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+
+ gl843_init_scan_regs (dev,
+ local_reg,
+ resolution,
+ resolution,
+ 100,
+ 40000,
+ 100,
+ 100,
+ 8,
+ 1,
+ SCAN_MODE_LINEART,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT | REG0D_CLRMCNT));
+
+ /* 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 (dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL843_MAX_REGS));
+
+ status = gl843_start_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_slow_back_home: failed to start motor: %s\n",
+ sane_strstatus (status));
+ gl843_stop_action (dev);
+ /* restore original registers */
+ dev->model->cmd_set->bulk_write_register (dev, dev->reg, GENESYS_GL843_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,
+ "gl843_slow_back_home: failed to read home sensor: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ if (DBG_LEVEL >= DBG_io2)
+ {
+ sanei_genesys_print_status (val);
+ }
+
+ if (val & REG41_HOMESNR) /* home sensor */
+ {
+ DBG (DBG_info, "gl843_slow_back_home: reached home position\n");
+ DBG (DBG_proc, "gl843_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 */
+ gl843_stop_action (dev);
+ DBG (DBG_error,
+ "gl843_slow_back_home: timeout while waiting for scanhead to go home\n");
+ return SANE_STATUS_IO_ERROR;
+ }
+
+ DBG (DBG_info, "%s: scanhead is still moving\n", __FUNCTION__);
+ DBGCOMPLETED;
+ 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
+gl843_search_start_position (Genesys_Device * dev)
+{
+ int size;
+ SANE_Status status;
+ uint8_t *data;
+ Genesys_Register_Set local_reg[GENESYS_GL843_MAX_REGS];
+ int steps;
+
+ int pixels = 600;
+ int dpi = 300;
+
+ DBG (DBG_proc, "gl843_search_start_position\n");
+
+ memcpy (local_reg, dev->reg, GENESYS_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ /* sets for a 200 lines * 600 pixels */
+ /* normal scan with no shading */
+
+ status = gl843_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,
+ SCAN_MODE_GRAY,
+ 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,
+ "gl843_search_start_position: failed to bulk setup registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* send to scanner */
+ status = dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL843_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_search_start_position: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ size = pixels * dev->model->search_lines;
+
+ data = malloc (size);
+ if (!data)
+ {
+ DBG (DBG_error,
+ "gl843_search_start_position: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+
+ status = gl843_begin_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl843_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,
+ "gl843_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 = gl843_end_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl843_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_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ 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,
+ "gl843_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
+gl843_init_regs_for_coarse_calibration (Genesys_Device * dev)
+{
+ SANE_Status status;
+ uint8_t channels;
+ uint8_t cksel;
+
+ DBGSTART;
+ 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 = gl843_init_scan_regs (dev,
+ dev->calib_reg,
+ dev->settings.xres,
+ dev->settings.yres,
+ 0,
+ 0,
+ /* XXX STEF XXX dpi instead of pixels !*/
+ dev->sensor.optical_res / cksel,
+ 20,
+ 16,
+ channels,
+ dev->settings.scan_mode,
+ 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,
+ "gl843_init_register_for_coarse_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ gl843_set_motor_power (dev->calib_reg, SANE_FALSE);
+
+ DBG (DBG_info,
+ "gl843_init_register_for_coarse_calibration: optical sensor res: %d dpi, actual res: %d\n",
+ dev->sensor.optical_res / cksel, dev->settings.xres);
+
+ status = dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL843_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_init_register_for_coarse_calibration: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief moves the slider to steps at motor base dpi
+ * @param dev device to work on
+ * @param steps number of steps to move
+ * */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl843_feed (Genesys_Device * dev, unsigned int steps)
+{
+ Genesys_Register_Set local_reg[GENESYS_GL843_MAX_REGS];
+ SANE_Status status;
+ Genesys_Register_Set *r;
+ float resolution;
+ uint8_t val;
+
+ DBGSTART;
+
+ /* prepare local registers */
+ memcpy (local_reg, dev->reg, GENESYS_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+ gl843_init_scan_regs (dev,
+ local_reg,
+ resolution,
+ resolution,
+ 0,
+ steps,
+ 100,
+ 3,
+ 8,
+ 3,
+ SCAN_MODE_COLOR,
+ 0,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_FEEDING |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+
+ /* clear scan and feed count */
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRLNCNT));
+ RIE (sanei_genesys_write_register (dev, REG0D, REG0D_CLRMCNT));
+
+ /* set up for no scan */
+ r = sanei_genesys_get_address (local_reg, REG01);
+ r->value &= ~REG01_SCAN;
+
+ /* send registers */
+ RIE (dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL843_MAX_REGS));
+
+ status = gl843_start_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to start motor: %s\n", __FUNCTION__, sane_strstatus (status));
+ gl843_stop_action (dev);
+
+ /* restore original registers */
+ dev->model->cmd_set->bulk_write_register (dev, dev->reg, GENESYS_GL843_MAX_REGS);
+ return status;
+ }
+
+ /* wait until feed count reaches the required value, but do not
+ * exceed 30s */
+ do
+ {
+ status = sanei_genesys_get_status (dev, &val);
+ }
+ while (status == SANE_STATUS_GOOD && !(val & FEEDFSH));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/* init registers for shading calibration */
+/* shading calibration is done at dpihw */
+static SANE_Status
+gl843_init_regs_for_shading (Genesys_Device * dev)
+{
+ SANE_Status status;
+ int move, resolution, dpihw, factor;
+ uint16_t strpixel;
+
+ DBGSTART;
+
+ /* initial calibration reg values */
+ memcpy (dev->calib_reg, dev->reg, GENESYS_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ dev->calib_channels = 3;
+ dev->calib_lines = dev->model->shading_lines;
+ dpihw=sanei_genesys_compute_dpihw(dev,dev->settings.xres);
+ factor=dev->sensor.optical_res/dpihw;
+ resolution=dpihw;
+ dev->calib_resolution = resolution;
+ dev->calib_pixels = dev->sensor.sensor_pixels/factor;
+
+ /* distance to move to reach white target */
+ move = SANE_UNFIX (dev->model->y_offset_calib);
+ move = (move * resolution) / MM_PER_INCH;
+
+ status = gl843_init_scan_regs (dev,
+ dev->calib_reg,
+ resolution,
+ resolution,
+ 0,
+ move,
+ dev->calib_pixels,
+ dev->calib_lines,
+ 16,
+ dev->calib_channels,
+ dev->settings.scan_mode,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_DISABLE_BUFFER_FULL_MOVE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_init_registers_for_shading: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ dev->scanhead_position_in_steps += dev->calib_lines + move;
+ sanei_genesys_get_double(dev->calib_reg,REG_STRPIXEL,&strpixel);
+ DBG (DBG_info, "%s: STRPIXEL=%d\n", __FUNCTION__, strpixel);
+
+ status = dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL843_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_init_registers_for_shading: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/** @brief set up registers for the actual scan
+ */
+static SANE_Status
+gl843_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,
+ "gl843_init_regs_for_scan settings:\nResolution: %ux%uDPI\n"
+ "Lines : %u\npixels : %u\nStartpos : %.3f/%.3f\nScan mode : %d\n\n",
+ dev->settings.xres,
+ dev->settings.yres,
+ dev->settings.lines,
+ dev->settings.pixels,
+ dev->settings.tl_x,
+ dev->settings.tl_y,
+ dev->settings.scan_mode);
+
+ /* ensure head is parked in case of calibration */
+ gl843_slow_back_home (dev, SANE_TRUE);
+
+ /* channels */
+ if (dev->settings.scan_mode == SCAN_MODE_COLOR)
+ channels = 3;
+ else
+ channels = 1;
+
+ /* depth */
+ depth = dev->settings.depth;
+ if (dev->settings.scan_mode == SCAN_MODE_LINEART)
+ depth = 1;
+
+ move_dpi = dev->motor.base_ydpi;
+
+ move = SANE_UNFIX (dev->model->y_offset);
+ move += dev->settings.tl_y;
+ move = (move * move_dpi) / MM_PER_INCH;
+ DBG (DBG_info, "gl843_init_regs_for_scan: move=%f steps\n", move);
+
+ /* start */
+ start = SANE_UNFIX (dev->model->x_offset);
+ start += dev->settings.tl_x;
+ start = (start * dev->sensor.optical_res) / MM_PER_INCH;
+
+ flags = 0;
+
+ /* enable emulated lineart from gray data */
+ if(dev->settings.scan_mode == SCAN_MODE_LINEART
+ && dev->settings.dynamic_lineart)
+ {
+ flags |= SCAN_FLAG_DYNAMIC_LINEART;
+ }
+
+ status = gl843_init_scan_regs (dev,
+ dev->reg,
+ dev->settings.xres,
+ dev->settings.yres,
+ start,
+ move,
+ dev->settings.pixels,
+ dev->settings.lines,
+ depth,
+ channels,
+ dev->settings.scan_mode,
+ dev->settings.color_filter,
+ flags);
+
+ if (status != SANE_STATUS_GOOD)
+ return status;
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * This function sends gamma tables to ASIC
+ */
+static SANE_Status
+gl843_send_gamma_table (Genesys_Device * dev)
+{
+ int size;
+ int status;
+ uint8_t *gamma;
+ int i;
+
+ DBGSTART;
+
+ size = 256;
+
+ /* allocate temporary gamma tables: 16 bits words, 3 channels */
+ gamma = (uint8_t *) malloc (size * 2 * 3);
+ if (!gamma)
+ return SANE_STATUS_NO_MEM;
+
+ /* copy sensor specific's gamma tables */
+ for (i = 0; i < size; i++)
+ {
+ gamma[i * 2 + size * 0 + 0] = dev->sensor.gamma_table[GENESYS_RED][i] & 0xff;
+ gamma[i * 2 + size * 0 + 1] = (dev->sensor.gamma_table[GENESYS_RED][i] >> 8) & 0xff;
+ gamma[i * 2 + size * 2 + 0] = dev->sensor.gamma_table[GENESYS_GREEN][i] & 0xff;
+ gamma[i * 2 + size * 2 + 1] = (dev->sensor.gamma_table[GENESYS_GREEN][i] >> 8) & 0xff;
+ gamma[i * 2 + size * 4 + 0] = dev->sensor.gamma_table[GENESYS_BLUE][i] & 0xff;
+ gamma[i * 2 + size * 4 + 1] = (dev->sensor.gamma_table[GENESYS_BLUE][i] >> 8) & 0xff;
+ }
+
+ /* send address */
+ status = gl843_set_buffer_address (dev, 0x0000);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (gamma);
+ DBG (DBG_error,
+ "gl843_send_gamma_table: failed to set buffer address: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* send data */
+ status = gl843_bulk_write_data (dev, 0x28, (uint8_t *) gamma, size * 2 * 3);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (gamma);
+ DBG (DBG_error,
+ "gl843_send_gamma_table: failed to send gamma table: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ DBG (DBG_proc, "gl843_send_gamma_table: completed\n");
+ free (gamma);
+ 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
+gl843_led_calibration (Genesys_Device * dev)
+{
+ int num_pixels;
+ int total_size;
+ int used_res;
+ uint8_t *line;
+ int i, j;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int val;
+ int channels, depth;
+ int avg[3], avga, avge;
+ int turn;
+ char fn[20];
+ uint16_t expr, expg, expb;
+ Genesys_Register_Set *r;
+
+ SANE_Bool acceptable = SANE_FALSE;
+
+ DBG (DBG_proc, "gl843_led_calibration\n");
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+ depth = 16;
+ used_res = dev->sensor.optical_res;
+ num_pixels =
+ (dev->sensor.sensor_pixels * used_res) / dev->sensor.optical_res;
+
+ /* initial calibration reg values */
+ memcpy (dev->calib_reg, dev->reg,
+ GENESYS_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ status = gl843_init_scan_regs (dev,
+ dev->calib_reg,
+ used_res,
+ dev->motor.base_ydpi,
+ 0,
+ 0,
+ num_pixels,
+ 1,
+ depth,
+ channels,
+ SCAN_MODE_COLOR,
+ 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,
+ "gl843_led_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ RIE (dev->model->cmd_set->bulk_write_register
+ (dev, dev->calib_reg, GENESYS_GL843_MAX_REGS));
+
+
+ total_size = num_pixels * channels * (depth / 8) * 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;
+
+ 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;
+
+ for (i = 0; i < 6; i++)
+ {
+ r = sanei_genesys_get_address (dev->calib_reg, 0x10 + i);
+ r->value = dev->sensor.regs_0x10_0x1d[i];
+ }
+
+ RIE (dev->model->cmd_set->bulk_write_register
+ (dev, dev->calib_reg, GENESYS_GL843_MAX_REGS));
+
+ DBG (DBG_info, "gl843_led_calibration: starting first line reading\n");
+ RIE (gl843_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_%02d.pnm", turn);
+ sanei_genesys_write_pnm_file (fn,
+ line, depth, 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, "gl843_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;
+
+ /* don't overflow max exposure */
+ if (avge > 3000)
+ {
+ expr = (expr * 2000) / avge;
+ expg = (expg * 2000) / avge;
+ expb = (expb * 2000) / avge;
+ }
+ if (avge < 50)
+ {
+ expr = (expr * 50) / avge;
+ expg = (expg * 50) / avge;
+ expb = (expb * 50) / avge;
+ }
+
+ }
+
+ RIE (gl843_stop_action (dev));
+
+ turn++;
+
+ }
+ while (!acceptable && turn < 100);
+
+ DBG (DBG_info, "gl843_led_calibration: acceptable exposure: %d,%d,%d\n",
+ expr, expg, expb);
+
+ /* cleanup before return */
+ free (line);
+
+ gl843_slow_back_home (dev, SANE_TRUE);
+
+ DBG (DBG_proc, "gl843_led_calibration: completed\n");
+ return status;
+}
+
+
+
+/**
+ * average dark pixels of a 8 bits scan of a given channel
+ */
+static int
+dark_average_channel (uint8_t * data, unsigned int pixels, unsigned int lines,
+ unsigned int channels, unsigned int black, int channel)
+{
+ unsigned int i, j, k, count;
+ unsigned int avg[3];
+ uint8_t val;
+
+ /* computes average values on black margin */
+ for (k = 0; k < channels; k++)
+ {
+ avg[k] = 0;
+ count = 0;
+ for (i = 0; i < lines; i++)
+ {
+ for (j = 0; j < black; j++)
+ {
+ val = data[i * channels * pixels + j*channels + k];
+ avg[k] += val;
+ count++;
+ }
+ }
+ if (count)
+ avg[k] /= count;
+ DBG (DBG_info, "%s: avg[%d] = %d\n", __FUNCTION__, k, avg[k]);
+ }
+ DBG (DBG_info, "%s: average = %d\n", __FUNCTION__, avg[channel]);
+ return avg[channel];
+}
+
+/** @brief calibrate AFE offset
+ * Iterate doing scans at target dpi until AFE offset if correct. One
+ * color line is scanned at a time. Scanning head doesn't move.
+ * @param dev device to calibrate
+ */
+static SANE_Status
+gl843_offset_calibration (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ uint8_t *first_line, *second_line;
+ unsigned int channels, bpp;
+ char title[32];
+ int pass, total_size, i, resolution, lines;
+ int topavg[3], bottomavg[3], avg[3];
+ int top[3], bottom[3], black_pixels, pixels, factor, dpihw;
+
+ DBGSTART;
+
+ /* offset calibration is always done in color mode */
+ channels = 3;
+ lines = 8;
+ bpp = 8;
+
+ /* compute divider factor to compute final pixels number */
+ dpihw = sanei_genesys_compute_dpihw (dev, dev->settings.xres);
+ factor = dev->sensor.optical_res / dpihw;
+ resolution = dpihw;
+ pixels = dev->sensor.sensor_pixels / factor;
+ black_pixels = dev->sensor.black_pixels / factor;
+ DBG (DBG_io, "gl843_offset_calibration: dpihw =%d\n", dpihw);
+ DBG (DBG_io, "gl843_offset_calibration: factor =%d\n", factor);
+ DBG (DBG_io, "gl843_offset_calibration: resolution =%d\n", resolution);
+ DBG (DBG_io, "gl843_offset_calibration: pixels =%d\n", pixels);
+ DBG (DBG_io, "gl843_offset_calibration: black_pixels=%d\n", black_pixels);
+
+ status = gl843_init_scan_regs (dev,
+ dev->calib_reg,
+ resolution,
+ resolution,
+ 0,
+ 0,
+ pixels,
+ lines,
+ bpp,
+ channels,
+ SCAN_MODE_COLOR,
+ 0,
+ 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, "gl843_offset_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+ gl843_set_motor_power (dev->calib_reg, SANE_FALSE);
+
+ /* allocate memory for scans */
+ total_size = pixels * channels * lines * (bpp / 8); /* 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;
+ }
+
+ /* init gain and offset */
+ for (i = 0; i < 3; i++)
+ {
+ bottom[i] = 10;
+ dev->frontend.offset[i] = bottom[i];
+ dev->frontend.gain[i] = 0;
+ }
+ RIEF2 (gl843_set_fe (dev, AFE_SET), first_line, second_line);
+
+ /* scan with obttom AFE settings */
+ RIEF2 (dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL843_MAX_REGS), first_line, second_line);
+ DBG (DBG_info, "gl843_offset_calibration: starting first line reading\n");
+ RIEF2 (gl843_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)
+ {
+ for (i = 0; i < 3; i++)
+ {
+ snprintf (title, 20, "offset_%d_%03d.pnm", i, bottom[i]);
+ sanei_genesys_write_pnm_file (title, first_line, bpp, channels, pixels, lines);
+ }
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ bottomavg[i] = dark_average_channel (first_line, pixels, lines, channels, black_pixels, i);
+ DBG (DBG_io2, "gl843_offset_calibration: bottom avg %d=%d\n", i, bottomavg[i]);
+ }
+
+ /* now top value */
+ for (i = 0; i < 3; i++)
+ {
+ top[i] = 255;
+ dev->frontend.offset[i] = top[i];
+ }
+ RIEF2 (gl843_set_fe (dev, AFE_SET), first_line, second_line);
+
+ /* scan with top AFE values */
+ RIEF2 (dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL843_MAX_REGS), first_line, second_line);
+ DBG (DBG_info, "gl843_offset_calibration: starting second line reading\n");
+ RIEF2 (gl843_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);
+
+ for (i = 0; i < 3; i++)
+ {
+ topavg[i] = dark_average_channel (second_line, pixels, lines, channels, black_pixels, i);
+ DBG (DBG_io2, "gl843_offset_calibration: top avg %d=%d\n", i, topavg[i]);
+ }
+
+ pass = 0;
+
+ /* loop until acceptable level */
+ while ((pass < 32)
+ && ((top[0] - bottom[0] > 1)
+ || (top[1] - bottom[1] > 1) || (top[2] - bottom[2] > 1)))
+ {
+ pass++;
+
+ /* settings for new scan */
+ for (i = 0; i < 3; i++)
+ {
+ if (top[i] - bottom[i] > 1)
+ {
+ dev->frontend.offset[i] = (top[i] + bottom[i]) / 2;
+ }
+ }
+ RIEF2 (gl843_set_fe (dev, AFE_SET), first_line, second_line);
+
+ /* scan with no move */
+ RIEF2 (dev->model->cmd_set->bulk_write_register (dev, dev->calib_reg, GENESYS_GL843_MAX_REGS), first_line, second_line);
+ DBG (DBG_info, "gl843_offset_calibration: starting second line reading\n");
+ RIEF2 (gl843_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)
+ {
+ for (i = 0; i < 3; i++)
+ {
+ sprintf (title, "offset_%d_%03d.pnm", i, dev->frontend.offset[i]);
+ sanei_genesys_write_pnm_file (title, second_line, bpp, channels, pixels, lines);
+ }
+ }
+
+ for (i = 0; i < 3; i++)
+ {
+ avg[i] = dark_average_channel (second_line, pixels, lines, channels, black_pixels, i);
+ DBG (DBG_info, "gl843_offset_calibration: avg[%d]=%d offset=%d\n", i, avg[i], dev->frontend.offset[i]);
+ }
+
+ /* compute new boundaries */
+ for (i = 0; i < 3; i++)
+ {
+ if (topavg[i] >= avg[i])
+ {
+ topavg[i] = avg[i];
+ top[i] = dev->frontend.offset[i];
+ }
+ else
+ {
+ bottomavg[i] = avg[i];
+ bottom[i] = dev->frontend.offset[i];
+ }
+ }
+ }
+ DBG (DBG_info, "gl843_offset_calibration: offset=(%d,%d,%d)\n",
+ dev->frontend.offset[0],
+ dev->frontend.offset[1],
+ dev->frontend.offset[2]);
+
+ /* cleanup before return */
+ free (first_line);
+ free (second_line);
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+
+/* 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
+gl843_coarse_gain_calibration (Genesys_Device * dev, int dpi)
+{
+ int pixels, factor, dpihw;
+ int total_size;
+ uint8_t *line;
+ int i, j, channels;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int max[3];
+ float gain[3],coeff;
+ int val, code, lines;
+ int resolution;
+ int bpp;
+
+ DBG (DBG_proc, "gl843_coarse_gain_calibration: dpi = %d\n", dpi);
+ dpihw=sanei_genesys_compute_dpihw(dev, dpi);
+ factor=dev->sensor.optical_res/dpihw;
+
+ /* coarse gain calibration is always done in color mode */
+ channels = 3;
+
+ /* follow CKSEL */
+ if (dev->model->ccd_type == CCD_KVSS080)
+ {
+ if(dev->settings.xres<dev->sensor.optical_res)
+ {
+ coeff=0.9;
+ }
+ else
+ {
+ coeff=1.0;
+ }
+ }
+ else
+ {
+ coeff=1.0;
+ }
+ resolution=dpihw;
+ lines=10;
+ bpp=8;
+ pixels = dev->sensor.sensor_pixels / factor;
+
+ status = gl843_init_scan_regs (dev,
+ dev->calib_reg,
+ resolution,
+ resolution,
+ 0,
+ 0,
+ pixels,
+ lines,
+ bpp,
+ channels,
+ SCAN_MODE_COLOR,
+ dev->settings.color_filter,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA |
+ SCAN_FLAG_SINGLE_LINE |
+ SCAN_FLAG_IGNORE_LINE_DISTANCE);
+ gl843_set_motor_power (dev->calib_reg, SANE_FALSE);
+
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_coarse_calibration: failed to setup scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ RIE (dev->model->cmd_set->bulk_write_register
+ (dev, dev->calib_reg, GENESYS_GL843_MAX_REGS));
+
+ total_size = pixels * channels * (16/bpp) * lines;
+
+ line = malloc (total_size);
+ if (!line)
+ return SANE_STATUS_NO_MEM;
+
+ RIEF (gl843_set_fe(dev, AFE_SET), line);
+ RIEF (gl843_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, bpp, channels, pixels, lines);
+
+ /* average value on each channel */
+ for (j = 0; j < channels; j++)
+ {
+ max[j] = 0;
+ for (i = pixels/4; i < (pixels*3/4); i++)
+ {
+ if(bpp==16)
+ {
+ if (dev->model->is_cis)
+ val =
+ line[i * 2 + j * 2 * pixels + 1] * 256 +
+ line[i * 2 + j * 2 * pixels];
+ else
+ val =
+ line[i * 2 * channels + 2 * j + 1] * 256 +
+ line[i * 2 * channels + 2 * j];
+ }
+ else
+ {
+ if (dev->model->is_cis)
+ val = line[i + j * pixels];
+ else
+ val = line[i * channels + j];
+ }
+
+ max[j] += val;
+ }
+ max[j] = max[j] / (pixels/2);
+
+ gain[j] = ((float) dev->sensor.gain_white_ref*coeff) / max[j];
+
+ /* turn logical gain value into gain code, checking for overflow */
+ code = 283 - 208 / gain[j];
+ if (code > 255)
+ code = 255;
+ else if (code < 0)
+ code = 0;
+ dev->frontend.gain[j] = code;
+
+ DBG (DBG_proc,
+ "gl843_coarse_gain_calibration: channel %d, max=%d, gain = %f, setting:%d\n",
+ j, max[j], gain[j], dev->frontend.gain[j]);
+ }
+
+ 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 (gl843_stop_action (dev));
+
+ status=gl843_slow_back_home (dev, SANE_TRUE);
+
+ DBGCOMPLETED;
+ return status;
+}
+
+/*
+ * wait for lamp warmup by scanning the same line until difference
+ * between 2 scans is below a threshold
+ */
+static SANE_Status
+gl843_init_regs_for_warmup (Genesys_Device * dev,
+ Genesys_Register_Set * reg,
+ int *channels, int *total_size)
+{
+ int num_pixels;
+ SANE_Status status = SANE_STATUS_GOOD;
+ int dpihw;
+ int resolution;
+ int factor;
+
+ DBGSTART;
+ if (dev == NULL || reg == NULL || channels == NULL || total_size == NULL)
+ return SANE_STATUS_INVAL;
+
+ /* setup scan */
+ *channels=3;
+ resolution=600;
+ dpihw=sanei_genesys_compute_dpihw(dev, resolution);
+ factor=dev->sensor.optical_res/dpihw;
+ num_pixels=dev->sensor.sensor_pixels/(factor*2);
+ *total_size = num_pixels * 3 * 1;
+
+ memcpy (reg, dev->reg, (GENESYS_GL843_MAX_REGS + 1) * sizeof (Genesys_Register_Set));
+ status = gl843_init_scan_regs (dev,
+ reg,
+ resolution,
+ resolution,
+ num_pixels/2,
+ 0,
+ num_pixels,
+ 1,
+ 8,
+ *channels,
+ SCAN_MODE_COLOR,
+ 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, "%s: failed to setup scan: %s\n", __FUNCTION__, sane_strstatus (status));
+ return status;
+ }
+
+ gl843_set_motor_power (reg, SANE_FALSE);
+ RIE (dev->model->cmd_set->bulk_write_register (dev, reg, GENESYS_GL843_MAX_REGS));
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/**
+ * set up GPIO/GPOE for idle state
+WRITE GPIO[17-21]= GPIO19
+WRITE GPOE[17-21]= GPOE21 GPOE20 GPOE19 GPOE18
+genesys_write_register(0xa8,0x3e)
+GPIO(0xa8)=0x3e
+ */
+static SANE_Status
+gl843_init_gpio (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ int idx;
+
+ DBGSTART;
+
+ RIE (sanei_genesys_write_register (dev, REG6E, dev->gpo.enable[0]));
+ RIE (sanei_genesys_write_register (dev, REG6F, dev->gpo.enable[1]));
+ RIE (sanei_genesys_write_register (dev, REG6C, dev->gpo.value[0]));
+ RIE (sanei_genesys_write_register (dev, REG6D, dev->gpo.value[1]));
+
+ idx=0;
+ while(dev->model->gpo_type != gpios[idx].gpo_type && gpios[idx].gpo_type!=0)
+ {
+ idx++;
+ }
+ if (gpios[idx].gpo_type!=0)
+ {
+ RIE (sanei_genesys_write_register (dev, REGA6, gpios[idx].ra6));
+ RIE (sanei_genesys_write_register (dev, REGA7, gpios[idx].ra7));
+ RIE (sanei_genesys_write_register (dev, REGA8, gpios[idx].ra8));
+ RIE (sanei_genesys_write_register (dev, REGA9, gpios[idx].ra9));
+ }
+ else
+ {
+ status=SANE_STATUS_INVAL;
+ }
+
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/* *
+ * initialize ASIC from power on condition
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl843_boot (Genesys_Device * dev, SANE_Bool cold)
+{
+ SANE_Status status;
+ uint8_t val;
+
+ DBGSTART;
+
+ if(cold)
+ {
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x01));
+ RIE (sanei_genesys_write_register (dev, 0x0e, 0x00));
+ }
+
+ if(dev->usb_mode == 1)
+ {
+ val = 0x14;
+ }
+ else
+ {
+ val = 0x11;
+ }
+ RIE (sanei_genesys_write_0x8c (dev, 0x0f, val));
+
+ /* test CHKVER */
+ RIE (sanei_genesys_read_register (dev, REG40, &val));
+ if (val & REG40_CHKVER)
+ {
+ RIE (sanei_genesys_read_register (dev, 0x00, &val));
+ DBG (DBG_info,
+ "%s: reported version for genesys chip is 0x%02x\n", __FUNCTION__,
+ val);
+ }
+
+ /* Set default values for registers */
+ gl843_init_registers (dev);
+
+ RIE (sanei_genesys_write_register (dev, REG6B, 0x02));
+
+ /* Write initial registers */
+ RIE (dev->model->cmd_set->bulk_write_register (dev, dev->reg, GENESYS_GL843_MAX_REGS));
+
+ /* Enable DRAM by setting a rising edge on bit 3 of reg 0x0b */
+ val = dev->reg[reg_0x0b].value & REG0B_DRAMSEL;
+ val = (val | REG0B_ENBDRAM);
+ RIE (sanei_genesys_write_register (dev, REG0B, val));
+ dev->reg[reg_0x0b].value = val;
+ /* URB 14 control 0x40 0x0c 0x8c 0x10 len 1 wrote 0xb4 */
+ RIE (sanei_genesys_write_0x8c (dev, 0x10, 0xb4));
+
+ /* CLKSET */
+ val = (dev->reg[reg_0x0b].value & ~REG0B_CLKSET) | REG0B_48MHZ;
+ RIE (sanei_genesys_write_register (dev, REG0B, val));
+ dev->reg[reg_0x0b].value = val;
+
+ /* prevent further writings by bulk write register */
+ dev->reg[reg_0x0b].address = 0x00;
+
+ /* set up end access */
+ sanei_genesys_write_register (dev, REGA7, 0x04);
+ sanei_genesys_write_register (dev, REGA9, 0x00);
+
+ /* set RAM read address */
+ RIE (sanei_genesys_write_register (dev, REG29, 0x00));
+ RIE (sanei_genesys_write_register (dev, REG2A, 0x00));
+ RIE (sanei_genesys_write_register (dev, REG2B, 0x00));
+
+ /* setup gpio */
+ RIE (gl843_init_gpio (dev));
+
+ gl843_feed (dev, 300);
+ usleep (100000);
+
+ DBGCOMPLETED;
+ return SANE_STATUS_GOOD;
+}
+
+/* *
+ * initialize backend and ASIC : registers, motor tables, and gamma tables
+ * then ensure scanner's head is at home
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl843_init (Genesys_Device * dev)
+{
+ SANE_Status status;
+
+ DBG_INIT ();
+ DBGSTART;
+
+ status=sanei_genesys_asic_init(dev, GENESYS_GL843_MAX_REGS);
+
+ DBGCOMPLETED;
+ return status;
+}
+
+static SANE_Status
+gl843_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;
+
+ RIE (sanei_genesys_read_register (s->dev, REG6D, &val));
+
+ switch (s->dev->model->gpo_type)
+ {
+ case GPO_KVSS080:
+ if (s->val[OPT_SCAN_SW].b == s->last_val[OPT_SCAN_SW].b)
+ s->val[OPT_SCAN_SW].b = (val & 0x04) == 0;
+ break;
+ case GPO_G4050:
+ 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;
+ break;
+ case GPO_CS4400F:
+ case GPO_CS8400F:
+ default:
+ break;
+ }
+
+ return status;
+}
+#ifndef UNIT_TESTING
+static
+#endif
+/** @brief move sensor to transparency adaptor
+ * Move sensor to the calibration of the transparency adapator (XPA).
+ * @param dev device to use
+ */
+SANE_Status gl843_move_to_ta (Genesys_Device * dev)
+{
+ SANE_Status status = SANE_STATUS_GOOD;
+ float resolution;
+ unsigned int feed;
+
+ DBGSTART;
+
+ resolution=sanei_genesys_get_lowest_ydpi(dev);
+ feed = 16*(SANE_UNFIX (dev->model->y_offset_calib_ta) * resolution) / MM_PER_INCH;
+ status = gl843_feed (dev, feed);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to move to XPA calibration area\n", __FUNCTION__);
+ return status;
+ }
+
+ DBGCOMPLETED;
+ 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
+gl843_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_GL843_MAX_REGS];
+ size_t size;
+ uint8_t *data;
+ int steps, depth, dpi;
+ unsigned int pass, count, found, x, y;
+ char title[80];
+ Genesys_Register_Set *r;
+
+ DBG (DBG_proc, "gl843_search_strip %s %s\n", black ? "black" : "white",
+ forward ? "forward" : "reverse");
+
+ gl843_set_fe (dev, AFE_SET);
+ status = gl843_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_search_strip: failed to stop: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* set up for a gray scan at lowest dpi */
+ dpi = sanei_genesys_get_lowest_dpi(dev);
+ channels = 1;
+
+ /* 10 MM */
+ /* lines = (10 * dpi) / MM_PER_INCH; */
+ /* shading calibation is done with dev->motor.base_ydpi */
+ lines = (dev->model->shading_lines * dpi) / dev->motor.base_ydpi;
+ 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, "gl843_search_strip: failed to allocate memory\n");
+ return SANE_STATUS_NO_MEM;
+ }
+ dev->scanhead_position_in_steps = 0;
+
+ memcpy (local_reg, dev->reg,
+ GENESYS_GL843_MAX_REGS * sizeof (Genesys_Register_Set));
+
+ status = gl843_init_scan_regs (dev,
+ local_reg,
+ dpi,
+ dpi,
+ 0,
+ 0,
+ pixels,
+ lines,
+ depth,
+ channels,
+ SCAN_MODE_GRAY,
+ 0,
+ SCAN_FLAG_DISABLE_SHADING |
+ SCAN_FLAG_DISABLE_GAMMA);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free(data);
+ DBG (DBG_error,
+ "gl843_search_strip: failed to setup for scan: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* set up for reverse or forward */
+ r = sanei_genesys_get_address (local_reg, REG02);
+ if (forward)
+ r->value &= ~REG02_MTRREV;
+ else
+ r->value |= REG02_MTRREV;
+
+
+ status = dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL843_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free(data);
+ DBG (DBG_error,
+ "gl843_search_strip: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl843_begin_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl843_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,
+ "gl843_search_start_position: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl843_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error, "gl843_search_strip: gl843_stop_action failed\n");
+ return status;
+ }
+
+ pass = 0;
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sprintf (title, "search_strip_%s_%s%02d.pnm",
+ black ? "black" : "white", forward ? "fwd" : "bwd", (int)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 < 20 && !found)
+ {
+ status =
+ dev->model->cmd_set->bulk_write_register (dev, local_reg, GENESYS_GL843_MAX_REGS);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error,
+ "gl843_search_strip: failed to bulk write registers: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ /* now start scan */
+ status = gl843_begin_scan (dev, local_reg, SANE_TRUE);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error,
+ "gl843_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,
+ "gl843_search_start_position: failed to read data: %s\n",
+ sane_strstatus (status));
+ return status;
+ }
+
+ status = gl843_stop_action (dev);
+ if (status != SANE_STATUS_GOOD)
+ {
+ free (data);
+ DBG (DBG_error, "gl843_search_strip: gl843_stop_action failed\n");
+ return status;
+ }
+
+ if (DBG_LEVEL >= DBG_data)
+ {
+ sprintf (title, "search_strip_%s_%s%02d.pnm",
+ black ? "black" : "white", forward ? "fwd" : "bwd", (int)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] > 90)
+ {
+ count++;
+ }
+ /* when searching for white, detect black pixels */
+ if (!black && data[y * pixels + x] < 60)
+ {
+ 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,
+ "gl843_search_strip: strip found forward during pass %d at line %d\n",
+ pass, y);
+ }
+ else
+ {
+ DBG (DBG_data,
+ "gl843_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] > 90)
+ {
+ count++;
+ }
+ /* when searching for white, detect black pixels */
+ if (!black && data[y * pixels + x] < 60)
+ {
+ 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,
+ "gl843_search_strip: strip found backward during pass %d \n",
+ pass);
+ }
+ else
+ {
+ DBG (DBG_data,
+ "gl843_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, "gl843_search_strip: %s strip found\n",
+ black ? "black" : "white");
+ }
+ else
+ {
+ status = SANE_STATUS_UNSUPPORTED;
+ DBG (DBG_info, "gl843_search_strip: %s strip not found\n",
+ black ? "black" : "white");
+ }
+
+ DBG (DBG_proc, "gl843_search_strip: completed\n");
+ return status;
+}
+
+/**
+ * Send shading calibration data. The buffer is considered to always hold values
+ * for all the channels.
+ */
+#ifndef UNIT_TESTING
+static
+#endif
+SANE_Status
+gl843_send_shading_data (Genesys_Device * dev, uint8_t * data, int size)
+{
+ SANE_Status status;
+ uint32_t final_size, length, i;
+ uint8_t *final_data;
+ uint8_t *buffer;
+ int count,offset;
+ unsigned int tgtime;
+ unsigned int cksel;
+ Genesys_Register_Set *r;
+ uint16_t dpiset, strpixel, endpixel, startx, factor;
+
+ DBGSTART;
+
+ offset=0;
+ length=size;
+ r = sanei_genesys_get_address (dev->reg, REG01);
+ if(r->value & REG01_SHDAREA)
+ {
+ /* recompute STRPIXEL used shading calibration so we can
+ * compute offset within data for SHDAREA case */
+ r = sanei_genesys_get_address (dev->reg, REG18);
+ cksel= (r->value & REG18_CKSEL)+1;
+ sanei_genesys_get_double(dev->reg,REG_DPISET,&strpixel);
+ tgtime=1;
+ sanei_genesys_get_double(dev->reg,REG_DPISET,&dpiset);
+ factor=dev->sensor.optical_res/sanei_genesys_compute_dpihw(dev,dpiset);
+ if (dev->model->ccd_type == CCD_G4050 && dpiset>2400)
+ {
+ tgtime=2;
+ }
+
+ /* start coordinate in optical dpi coordinates */
+ startx = ((dev->sensor.dummy_pixel * tgtime)/cksel)/factor;
+
+ /* current scan coordinates */
+ sanei_genesys_get_double(dev->reg,REG_STRPIXEL,&strpixel);
+ sanei_genesys_get_double(dev->reg,REG_ENDPIXEL,&endpixel);
+ strpixel*=tgtime;
+ endpixel*=tgtime;
+
+ /* 16 bit words, 2 words per color, 3 color channels */
+ offset=(strpixel-startx)*2*2*3;
+ length=(endpixel-strpixel)*2*2*3;
+ DBG (DBG_info, "%s: STRPIXEL=%d, ENDPIXEL=%d, startx=%d\n", __FUNCTION__, strpixel, endpixel, startx);
+ }
+
+ /* compute and allocate size for final data */
+ final_size = ((length+251) / 252) * 256;
+ DBG (DBG_io, "%s: final shading size=%04x (length=%d)\n", __FUNCTION__, final_size, length);
+ final_data = (uint8_t *) malloc (final_size);
+ if(final_data==NULL)
+ {
+ DBG (DBG_error, "%s: failed to allocate memory for shading data\n", __FUNCTION__);
+ return SANE_STATUS_NO_MEM;
+ }
+ memset(final_data,0x00,final_size);
+
+ /* copy regular shading data to the expected layout */
+ buffer = final_data;
+ count = 0;
+
+ /* loop over calibration data */
+ for (i = 0; i < length; i++)
+ {
+ buffer[count] = data[offset+i];
+ count++;
+ if ((count % (256*2)) == (252*2))
+ {
+ count += 4*2;
+ }
+ }
+
+ /* send data */
+ status = sanei_genesys_set_buffer_address (dev, 0);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to set buffer address: %s\n", __FUNCTION__, sane_strstatus (status));
+ free(final_data);
+ return status;
+ }
+
+ status = dev->model->cmd_set->bulk_write_data (dev, 0x3c, final_data, count);
+ if (status != SANE_STATUS_GOOD)
+ {
+ DBG (DBG_error, "%s: failed to send shading table: %s\n", __FUNCTION__, sane_strstatus (status));
+ }
+
+ free(final_data);
+ DBGCOMPLETED;
+ return status;
+}
+
+
+/** the gl843 command set */
+static Genesys_Command_Set gl843_cmd_set = {
+ "gl843-generic", /* the name of this set */
+
+ gl843_init,
+ gl843_init_regs_for_warmup,
+ gl843_init_regs_for_coarse_calibration,
+ gl843_init_regs_for_shading,
+ gl843_init_regs_for_scan,
+
+ gl843_get_filter_bit,
+ gl843_get_lineart_bit,
+ gl843_get_bitset_bit,
+ gl843_get_gain4_bit,
+ gl843_get_fast_feed_bit,
+ gl843_test_buffer_empty_bit,
+ gl843_test_motor_flag_bit,
+
+ gl843_bulk_full_size,
+
+ gl843_set_fe,
+ gl843_set_powersaving,
+ gl843_save_power,
+
+ gl843_set_motor_power,
+ gl843_set_lamp_power,
+
+ gl843_begin_scan,
+ gl843_end_scan,
+
+ gl843_send_gamma_table,
+
+ gl843_search_start_position,
+
+ gl843_offset_calibration,
+ gl843_coarse_gain_calibration,
+ gl843_led_calibration,
+
+ gl843_slow_back_home,
+
+ sanei_genesys_bulk_write_register,
+ gl843_bulk_write_data,
+ gl843_bulk_read_data,
+
+ gl843_update_hardware_sensors,
+
+ gl843_load_document,
+ gl843_detect_document_end,
+ gl843_eject_document,
+ gl843_search_strip,
+
+ sanei_genesys_is_compatible_calibration,
+ gl843_move_to_ta,
+ gl843_send_shading_data,
+ gl843_calculate_current_setup,
+ gl843_boot
+};
+
+SANE_Status
+sanei_gl843_init_cmd_set (Genesys_Device * dev)
+{
+ dev->model->cmd_set = &gl843_cmd_set;
+ return SANE_STATUS_GOOD;
+}
+
+/* vim: set sw=2 cino=>2se-1sn-1s{s^-1st0(0u0 smarttab expandtab: */