/
mustek_pp_ccd300.c
2061 lines (1492 loc) · 43.2 KB
/
mustek_pp_ccd300.c
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/* sane - Scanner Access Now Easy.
Copyright (C) 2000-2003 Jochen Eisinger <jochen.eisinger@gmx.net>
This file is part of the SANE package.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.
As a special exception, the authors of SANE give permission for
additional uses of the libraries contained in this release of SANE.
The exception is that, if you link a SANE library with other files
to produce an executable, this does not by itself cause the
resulting executable to be covered by the GNU General Public
License. Your use of that executable is in no way restricted on
account of linking the SANE library code into it.
This exception does not, however, invalidate any other reasons why
the executable file might be covered by the GNU General Public
License.
If you submit changes to SANE to the maintainers to be included in
a subsequent release, you agree by submitting the changes that
those changes may be distributed with this exception intact.
If you write modifications of your own for SANE, it is your choice
whether to permit this exception to apply to your modifications.
If you do not wish that, delete this exception notice.
This file implements the hardware driver scanners using a 300dpi CCD */
#include "mustek_pp_ccd300.h"
#define MUSTEK_PP_CCD300 4
static void config_ccd_101x (Mustek_pp_Handle * dev);
static void config_ccd (Mustek_pp_Handle * dev);
static void lamp (Mustek_pp_Handle * dev, int lamp_on);
#define CCD300_ASIC1013 0xa8
#define CCD300_ASIC1015 0xa5
#define CCD300_CHANNEL_RED 0
#define CCD300_CHANNEL_GREEN 1
#define CCD300_CHANNEL_BLUE 2
#define CCD300_CHANNEL_GRAY 1
#define CCD300_MAXHSIZE 2600
#define CCD300_MAXVSIZE 3500
/*
* Here starts the driver code for the different chipsets
*
* The 1013 & 1015 chipsets share large portions of the code. This
* shared functions end with _101x.
*/
static const u_char chan_codes_1013[] = { 0x82, 0x42, 0xC2 };
static const u_char chan_codes_1015[] = { 0x80, 0x40, 0xC0 };
static const u_char fullstep[] = { 0x09, 0x0C, 0x06, 0x03 };
static const u_char halfstep[] = { 0x02, 0x03, 0x01, 0x09,
0x08, 0x0C, 0x04, 0x06
};
static const u_char voltages[4][3] = { {0x5C, 0x5A, 0x63},
{0xE6, 0xB4, 0xBE},
{0xB4, 0xB4, 0xB4},
{0x64, 0x50, 0x64}
};
/* Forward declarations of 1013/1015 functions */
static void set_ccd_channel_1013 (Mustek_pp_Handle * dev, int channel);
static void motor_backward_1013 (Mustek_pp_Handle * dev);
static void return_home_1013 (Mustek_pp_Handle * dev);
static void motor_forward_1013 (Mustek_pp_Handle * dev);
static void config_ccd_1013 (Mustek_pp_Handle * dev);
static void set_ccd_channel_1015 (Mustek_pp_Handle * dev, int channel);
/* static void motor_backward_1015 (Mustek_pp_Handle * dev); */
static void return_home_1015 (Mustek_pp_Handle * dev, SANE_Bool nowait);
static void motor_forward_1015 (Mustek_pp_Handle * dev);
static void config_ccd_1015 (Mustek_pp_Handle * dev);
/* These functions are common to all 1013/1015 chipsets */
static void
set_led (Mustek_pp_Handle * dev)
{
mustek_pp_ccd300_priv *priv = dev->priv;
sanei_pa4s2_writebyte (dev->fd, 6,
(priv->motor_step % 5 == 0 ? 0x03 : 0x13));
}
static void
set_sti (Mustek_pp_Handle * dev)
{
mustek_pp_ccd300_priv *priv = dev->priv;
sanei_pa4s2_writebyte (dev->fd, 3, 0);
priv->bank_count++;
priv->bank_count &= 7;
}
static void
get_bank_count (Mustek_pp_Handle * dev)
{
u_char val;
mustek_pp_ccd300_priv *priv = dev->priv;
sanei_pa4s2_readbegin (dev->fd, 3);
sanei_pa4s2_readbyte (dev->fd, &val);
sanei_pa4s2_readend (dev->fd);
priv->bank_count = (val & 0x07);
}
static void
reset_bank_count (Mustek_pp_Handle * dev)
{
sanei_pa4s2_writebyte (dev->fd, 6, 7);
}
static void
wait_bank_change (Mustek_pp_Handle * dev, int bankcount, int niceload)
{
struct timeval start, end;
unsigned long diff;
mustek_pp_ccd300_priv *priv = dev->priv;
int first_time = 1;
gettimeofday (&start, NULL);
do
{
if ((niceload == 0) && (first_time == 0))
{
usleep (1); /* could be as well sched_yield */
first_time = 0;
}
get_bank_count (dev);
gettimeofday (&end, NULL);
diff = (end.tv_sec * 1000 + end.tv_usec / 1000) -
(start.tv_sec * 1000 + start.tv_usec / 1000);
}
while ((priv->bank_count != bankcount) && (diff < priv->wait_bank));
}
static void
set_dpi_value (Mustek_pp_Handle * dev)
{
u_char val = 0;
mustek_pp_ccd300_priv *priv = dev->priv;
sanei_pa4s2_writebyte (dev->fd, 6, 0x80);
switch (priv->hwres)
{
case 100:
val = 0x00;
break;
case 200:
val = 0x10;
break;
case 300:
val = 0x20;
break;
}
if (priv->ccd_type == 1)
val |= 0x01;
sanei_pa4s2_writebyte (dev->fd, 5, val);
sanei_pa4s2_writebyte (dev->fd, 6, 0x00);
DBG (5, "set_dpi_value: value 0x%02x\n", val);
}
static void
set_line_adjust (Mustek_pp_Handle * dev)
{
int adjustline;
mustek_pp_ccd300_priv *priv = dev->priv;
adjustline = (dev->bottomX - dev->topX) * priv->hwres / 300;
priv->adjustskip = priv->adjustskip * priv->hwres / 300;
DBG (5, "set_line_adjust: ppl %u (%u), adjust %u, skip %u\n",
dev->params.pixels_per_line, (dev->bottomX - dev->topX), adjustline,
priv->adjustskip);
sanei_pa4s2_writebyte (dev->fd, 6, 0x11);
sanei_pa4s2_writebyte (dev->fd, 5, (adjustline + priv->adjustskip) >> 8);
sanei_pa4s2_writebyte (dev->fd, 6, 0x21);
sanei_pa4s2_writebyte (dev->fd, 5, (adjustline + priv->adjustskip) & 0xFF);
sanei_pa4s2_writebyte (dev->fd, 6, 0x01);
}
static void
set_lamp (Mustek_pp_Handle * dev, int lamp_on)
{
int ctr;
mustek_pp_ccd300_priv *priv = dev->priv;
sanei_pa4s2_writebyte (dev->fd, 6, 0xC3);
for (ctr = 0; ctr < 3; ctr++)
{
sanei_pa4s2_writebyte (dev->fd, 6, (lamp_on ? 0x47 : 0x57));
sanei_pa4s2_writebyte (dev->fd, 6, 0x77);
}
priv->motor_step = lamp_on;
set_led (dev);
}
static void
send_voltages (Mustek_pp_Handle * dev)
{
int voltage, sel = 8, ctr;
mustek_pp_ccd300_priv *priv = dev->priv;
switch (priv->ccd_type)
{
case 0:
voltage = 0;
break;
case 1:
voltage = 1;
break;
default:
voltage = 2;
break;
}
for (ctr = 0; ctr < 3; ctr++)
{
sel <<= 1;
sanei_pa4s2_writebyte (dev->fd, 6, sel);
sanei_pa4s2_writebyte (dev->fd, 5, voltages[voltage][ctr]);
}
sanei_pa4s2_writebyte (dev->fd, 6, 0x00);
}
static int
compar (const void *a, const void *b)
{
return (signed int) (*(const SANE_Byte *) a) -
(signed int) (*(const SANE_Byte *) b);
}
static void
set_ccd_channel_101x (Mustek_pp_Handle * dev, int channel)
{
mustek_pp_ccd300_priv *priv = dev->priv;
switch (priv->asic)
{
case CCD300_ASIC1013:
set_ccd_channel_1013 (dev, channel);
break;
case CCD300_ASIC1015:
set_ccd_channel_1015 (dev, channel);
break;
}
}
static void
motor_forward_101x (Mustek_pp_Handle * dev)
{
mustek_pp_ccd300_priv *priv = dev->priv;
switch (priv->asic)
{
case CCD300_ASIC1013:
motor_forward_1013 (dev);
break;
case CCD300_ASIC1015:
motor_forward_1015 (dev);
break;
}
}
static void
motor_backward_101x (Mustek_pp_Handle * dev)
{
mustek_pp_ccd300_priv *priv = dev->priv;
switch (priv->asic)
{
case CCD300_ASIC1013:
motor_backward_1013 (dev);
break;
case CCD300_ASIC1015:
/* motor_backward_1015 (dev); */
break;
}
}
static void
move_motor_101x (Mustek_pp_Handle * dev, int forward)
{
mustek_pp_ccd300_priv *priv = dev->priv;
if (forward == SANE_TRUE)
motor_forward_101x (dev);
else
motor_backward_101x (dev);
wait_bank_change (dev, priv->bank_count, 1);
reset_bank_count (dev);
}
static void
config_ccd_101x (Mustek_pp_Handle * dev)
{
mustek_pp_ccd300_priv *priv = dev->priv;
switch (priv->asic)
{
case CCD300_ASIC1013:
config_ccd_1013 (dev);
break;
case CCD300_ASIC1015:
config_ccd_1015 (dev);
break;
}
}
static void
read_line_101x (Mustek_pp_Handle * dev, SANE_Byte * buf, SANE_Int pixel,
SANE_Int RefBlack, SANE_Byte * calib, SANE_Int * gamma)
{
SANE_Byte *cal = calib;
u_char color;
mustek_pp_ccd300_priv *priv = dev->priv;
int ctr, skips = priv->adjustskip + 1, cval;
if (pixel <= 0)
return;
sanei_pa4s2_readbegin (dev->fd, 1);
if (priv->hwres == dev->res)
{
while (skips--)
sanei_pa4s2_readbyte (dev->fd, &color);
for (ctr = 0; ctr < pixel; ctr++)
{
sanei_pa4s2_readbyte (dev->fd, &color);
cval = color;
if (cval < RefBlack)
cval = 0;
else
cval -= RefBlack;
if (cal)
{
if (cval >= cal[ctr])
cval = 0xFF;
else
{
cval <<= 8;
cval /= (int) cal[ctr];
}
}
if (gamma)
cval = gamma[cval];
buf[ctr] = cval;
}
}
else
{
int pos = 0, bpos = 0;
while (skips--)
sanei_pa4s2_readbyte (dev->fd, &color);
ctr = 0;
do
{
sanei_pa4s2_readbyte (dev->fd, &color);
cval = color;
if (ctr < (pos >> SANE_FIXED_SCALE_SHIFT))
{
ctr++;
continue;
}
ctr++;
pos += priv->res_step;
if (cval < RefBlack)
cval = 0;
else
cval -= RefBlack;
if (cal)
{
if (cval >= cal[bpos])
cval = 0xFF;
else
{
cval <<= 8;
cval /= (int) cal[bpos];
}
}
if (gamma)
cval = gamma[cval];
buf[bpos++] = cval;
}
while (bpos < pixel);
}
sanei_pa4s2_readend (dev->fd);
}
static void
read_average_line_101x (Mustek_pp_Handle * dev, SANE_Byte * buf, int pixel,
int RefBlack)
{
SANE_Byte lbuf[4][CCD300_MAXHSIZE * 2];
int ctr, sum;
mustek_pp_ccd300_priv *priv = dev->priv;
for (ctr = 0; ctr < 4; ctr++)
{
wait_bank_change (dev, priv->bank_count, 1);
read_line_101x (dev, lbuf[ctr], pixel, RefBlack, NULL, NULL);
reset_bank_count (dev);
if (ctr < 3)
set_sti (dev);
}
for (ctr = 0; ctr < pixel; ctr++)
{
sum = lbuf[0][ctr] + lbuf[1][ctr] + lbuf[2][ctr] + lbuf[3][ctr];
buf[ctr] = (sum / 4);
}
}
static void
find_black_side_edge_101x (Mustek_pp_Handle * dev)
{
SANE_Byte buf[CCD300_MAXHSIZE * 2];
SANE_Byte blackposition[5];
int pos = 0, ctr, blackpos;
mustek_pp_ccd300_priv *priv = dev->priv;
for (ctr = 0; ctr < 20; ctr++)
{
motor_forward_101x (dev);
wait_bank_change (dev, priv->bank_count, 1);
read_line_101x (dev, buf, CCD300_MAXHSIZE, 0, NULL, NULL);
reset_bank_count (dev);
priv->ref_black = priv->ref_red = priv->ref_green = priv->ref_blue =
buf[0];
blackpos = CCD300_MAXHSIZE / 4;
while ((abs (buf[blackpos] - buf[0]) >= 15) && (blackpos > 0))
blackpos--;
if (blackpos > 1)
blackposition[pos++] = blackpos;
if (pos == 5)
break;
}
blackpos = 0;
for (ctr = 0; ctr < pos; ctr++)
if (blackposition[ctr] > blackpos)
blackpos = blackposition[ctr];
if (blackpos < 0x66)
blackpos = 0x6A;
priv->blackpos = blackpos;
priv->saved_skipcount = (blackpos + 12) & 0xFF;
}
static void
min_color_levels_101x (Mustek_pp_Handle * dev)
{
SANE_Byte buf[CCD300_MAXHSIZE * 2];
int ctr, sum = 0;
mustek_pp_ccd300_priv *priv = dev->priv;
for (ctr = 0; ctr < 8; ctr++)
{
set_ccd_channel_101x (dev, CCD300_CHANNEL_RED);
set_sti (dev);
wait_bank_change (dev, priv->bank_count, 1);
read_line_101x (dev, buf, CCD300_MAXHSIZE, 0, NULL, NULL);
reset_bank_count (dev);
sum += buf[3];
}
priv->ref_red = sum / 8;
sum = 0;
for (ctr = 0; ctr < 8; ctr++)
{
set_ccd_channel_101x (dev, CCD300_CHANNEL_GREEN);
set_sti (dev);
wait_bank_change (dev, priv->bank_count, 1);
read_line_101x (dev, buf, CCD300_MAXHSIZE, 0, NULL, NULL);
reset_bank_count (dev);
sum += buf[3];
}
priv->ref_green = sum / 8;
sum = 0;
for (ctr = 0; ctr < 8; ctr++)
{
set_ccd_channel_101x (dev, CCD300_CHANNEL_BLUE);
set_sti (dev);
wait_bank_change (dev, priv->bank_count, 1);
read_line_101x (dev, buf, CCD300_MAXHSIZE, 0, NULL, NULL);
reset_bank_count (dev);
sum += buf[3];
}
priv->ref_blue = sum / 8;
}
static void
max_color_levels_101x (Mustek_pp_Handle * dev)
{
int ctr, line, sum;
SANE_Byte rbuf[32][CCD300_MAXHSIZE * 2];
SANE_Byte gbuf[32][CCD300_MAXHSIZE * 2];
SANE_Byte bbuf[32][CCD300_MAXHSIZE * 2];
mustek_pp_ccd300_priv *priv = dev->priv;
SANE_Byte maxbuf[32];
for (ctr = 0; ctr < 32; ctr++)
{
if (dev->mode == MODE_COLOR)
{
set_ccd_channel_101x (dev, CCD300_CHANNEL_RED);
motor_forward_101x (dev);
read_average_line_101x (dev, rbuf[ctr], dev->params.pixels_per_line,
priv->ref_red);
set_ccd_channel_101x (dev, CCD300_CHANNEL_GREEN);
set_sti (dev);
read_average_line_101x (dev, gbuf[ctr], dev->params.pixels_per_line,
priv->ref_green);
set_ccd_channel_101x (dev, CCD300_CHANNEL_BLUE);
set_sti (dev);
read_average_line_101x (dev, bbuf[ctr], dev->params.pixels_per_line,
priv->ref_blue);
}
else
{
priv->channel = CCD300_CHANNEL_GRAY;
motor_forward_101x (dev);
read_average_line_101x (dev, gbuf[ctr], dev->params.pixels_per_line,
priv->ref_black);
}
}
for (ctr = 0; ctr < dev->params.pixels_per_line; ctr++)
{
for (line = 0; line < 32; line++)
maxbuf[line] = gbuf[line][ctr];
qsort (maxbuf, 32, sizeof (maxbuf[0]), compar);
sum = maxbuf[4] + maxbuf[5] + maxbuf[6] + maxbuf[7];
priv->calib_g[ctr] = sum / 4;
}
if (dev->mode == MODE_COLOR)
{
for (ctr = 0; ctr < dev->params.pixels_per_line; ctr++)
{
for (line = 0; line < 32; line++)
maxbuf[line] = rbuf[line][ctr];
qsort (maxbuf, 32, sizeof (maxbuf[0]), compar);
sum = maxbuf[4] + maxbuf[5] + maxbuf[6] + maxbuf[7];
priv->calib_r[ctr] = sum / 4;
}
for (ctr = 0; ctr < dev->params.pixels_per_line; ctr++)
{
for (line = 0; line < 32; line++)
maxbuf[line] = bbuf[line][ctr];
qsort (maxbuf, 32, sizeof (maxbuf[0]), compar);
sum = maxbuf[4] + maxbuf[5] + maxbuf[6] + maxbuf[7];
priv->calib_b[ctr] = sum / 4;
}
}
}
static void
find_black_top_edge_101x (Mustek_pp_Handle * dev)
{
int lines = 0, ctr, pos;
SANE_Byte buf[CCD300_MAXHSIZE * 2];
mustek_pp_ccd300_priv *priv = dev->priv;
priv->channel = CCD300_CHANNEL_GRAY;
do
{
motor_forward_101x (dev);
wait_bank_change (dev, priv->bank_count, 1);
read_line_101x (dev, buf, CCD300_MAXHSIZE, priv->ref_black, NULL, NULL);
reset_bank_count (dev);
pos = 0;
for (ctr = priv->blackpos; ctr > priv->blackpos - 10; ctr--)
if (buf[ctr] <= 15)
pos++;
}
while ((pos >= 8) && (lines++ < 67));
}
static void
calibrate_device_101x (Mustek_pp_Handle * dev)
{
int saved_ppl = dev->params.pixels_per_line, ctr;
mustek_pp_ccd300_priv *priv = dev->priv;
priv->saved_mode = dev->mode;
priv->saved_invert = dev->invert;
priv->saved_skipcount = priv->skipcount;
priv->saved_skipimagebyte = priv->skipimagebytes;
priv->saved_adjustskip = priv->adjustskip;
priv->saved_res = dev->res;
priv->saved_hwres = priv->hwres;
priv->saved_res_step = priv->res_step;
priv->saved_line_step = priv->line_step;
priv->saved_channel = priv->channel;
dev->params.pixels_per_line = CCD300_MAXHSIZE;
priv->hwres = dev->res = 300;
dev->mode = MODE_GRAYSCALE;
priv->skipcount = priv->skipimagebytes = 0;
dev->invert = SANE_FALSE;
priv->channel = CCD300_CHANNEL_GRAY;
config_ccd_101x (dev);
get_bank_count (dev);
find_black_side_edge_101x (dev);
for (ctr = 0; ctr < 4; ctr++)
move_motor_101x (dev, SANE_TRUE);
dev->mode = priv->saved_mode;
dev->invert = priv->saved_invert;
priv->skipcount = priv->saved_skipcount;
priv->skipimagebytes = priv->saved_skipimagebyte;
priv->adjustskip = priv->saved_adjustskip;
dev->res = priv->saved_res;
priv->hwres = priv->saved_hwres;
priv->res_step = priv->saved_res_step;
priv->line_step = priv->saved_line_step;
priv->channel = priv->saved_channel;
priv->hwres = dev->res = 300;
priv->skipcount = priv->skipimagebytes = 0;
dev->invert = SANE_FALSE;
config_ccd_101x (dev);
get_bank_count (dev);
if ((dev->mode == MODE_COLOR) && (priv->ccd_type != 0))
min_color_levels_101x (dev);
dev->mode = priv->saved_mode;
dev->invert = priv->saved_invert;
priv->skipcount = priv->saved_skipcount;
priv->skipimagebytes = priv->saved_skipimagebyte;
priv->adjustskip = priv->saved_adjustskip;
dev->res = priv->saved_res;
priv->hwres = priv->saved_hwres;
priv->res_step = priv->saved_res_step;
priv->line_step = priv->saved_line_step;
priv->channel = priv->saved_channel;
dev->params.pixels_per_line = saved_ppl;
dev->invert = SANE_FALSE;
config_ccd_101x (dev);
get_bank_count (dev);
max_color_levels_101x (dev);
dev->params.pixels_per_line = CCD300_MAXHSIZE;
dev->mode = MODE_GRAYSCALE;
priv->hwres = dev->res = 300;
priv->skipcount = priv->skipimagebytes = 0;
dev->invert = SANE_FALSE;
config_ccd_101x (dev);
get_bank_count (dev);
find_black_top_edge_101x (dev);
dev->mode = priv->saved_mode;
dev->invert = priv->saved_invert;
priv->skipcount = priv->saved_skipcount;
priv->skipimagebytes = priv->saved_skipimagebyte;
priv->adjustskip = priv->saved_adjustskip;
dev->res = priv->saved_res;
priv->hwres = priv->saved_hwres;
priv->res_step = priv->saved_res_step;
priv->line_step = priv->saved_line_step;
priv->channel = priv->saved_channel;
dev->params.pixels_per_line = saved_ppl;
config_ccd_101x (dev);
get_bank_count (dev);
}
static void
get_grayscale_line_101x (Mustek_pp_Handle * dev, SANE_Byte * buf)
{
int skips;
mustek_pp_ccd300_priv *priv = dev->priv;
priv->line_diff += SANE_FIX (300.0 / (float) dev->res);
skips = (priv->line_diff >> SANE_FIXED_SCALE_SHIFT);
while (--skips)
{
motor_forward_101x (dev);
wait_bank_change (dev, priv->bank_count, 1);
reset_bank_count (dev);
}
priv->line_diff &= 0xFFFF;
motor_forward_101x (dev);
wait_bank_change (dev, priv->bank_count, 1);
read_line_101x (dev, buf, dev->params.pixels_per_line, priv->ref_black,
priv->calib_g, NULL);
reset_bank_count (dev);
}
static void
get_lineart_line_101x (Mustek_pp_Handle * dev, SANE_Byte * buf)
{
int ctr;
SANE_Byte gbuf[CCD300_MAXHSIZE * 2];
mustek_pp_ccd300_priv *priv = dev->priv;
get_grayscale_line_101x (dev, gbuf);
memset (buf, 0xFF, dev->params.bytes_per_line);
for (ctr = 0; ctr < dev->params.pixels_per_line; ctr++)
buf[ctr >> 3] ^= ((gbuf[ctr] > priv->bw) ? (1 << (7 - ctr % 8)) : 0);
}
static void
get_color_line_101x (Mustek_pp_Handle * dev, SANE_Byte * buf)
{
SANE_Byte *red, *blue, *src, *dest;
int gotline = 0, ctr;
int gored, goblue, gogreen;
mustek_pp_ccd300_priv *priv = dev->priv;
int step = priv->line_step;
do
{
red = priv->red[priv->redline];
blue = priv->blue[priv->blueline];
priv->ccd_line++;
if ((priv->rdiff >> SANE_FIXED_SCALE_SHIFT) == priv->ccd_line)
{
gored = 1;
priv->rdiff += step;
}
else
gored = 0;
if ((priv->bdiff >> SANE_FIXED_SCALE_SHIFT) == priv->ccd_line)
{
goblue = 1;
priv->bdiff += step;
}
else
goblue = 0;
if ((priv->gdiff >> SANE_FIXED_SCALE_SHIFT) == priv->ccd_line)
{
gogreen = 1;
priv->gdiff += step;
}
else
gogreen = 0;
if (!gored && !goblue && !gogreen)
{
motor_forward_101x (dev);
wait_bank_change (dev, priv->bank_count, 1);
reset_bank_count (dev);
if (priv->ccd_line >= (priv->line_step >> SANE_FIXED_SCALE_SHIFT))
priv->redline = ++priv->redline % priv->green_offs;
if (priv->ccd_line >=
priv->blue_offs + (priv->line_step >> SANE_FIXED_SCALE_SHIFT))
priv->blueline = ++priv->blueline % priv->blue_offs;
continue;
}
if (gored)
priv->channel = CCD300_CHANNEL_RED;
else if (goblue)
priv->channel = CCD300_CHANNEL_BLUE;
else
priv->channel = CCD300_CHANNEL_GREEN;
motor_forward_101x (dev);
wait_bank_change (dev, priv->bank_count, 1);
if (priv->ccd_line >= priv->green_offs && gogreen)
{
src = red;
dest = buf;
for (ctr = 0; ctr < dev->params.pixels_per_line; ctr++)
{
*dest = *src++;
dest += 3;
}
}
if (gored)
{
read_line_101x (dev, red, dev->params.pixels_per_line,
priv->ref_red, priv->calib_r, NULL);
reset_bank_count (dev);
}
priv->redline = ++priv->redline % priv->green_offs;
if (priv->ccd_line >= priv->green_offs && gogreen)
{
src = blue;
dest = buf + 2;
for (ctr = 0; ctr < dev->params.pixels_per_line; ctr++)
{
*dest = *src++;
dest += 3;
}
}
if (goblue)
{
if (gored)