Hi
I could use the xscanimage with the CanoScanFB620S by many and kind help of
Mr.Abel Deuring.
I have the next problem to modify "Fine color" in the Scan mode of the
preview and the scan.
In addition to "Fine color" scan mode, CanoScanFB620S has the "Color" scan
mode.
But the preview and the scan speed in "Fine color" scan mode is very slower
than the speed in "Color" scan mode.
So, I would like to modify in the following way.
When I select "Fine color" scan mode in the pulldown menu of xscanimage, at
the only preview running "Color" scan mode is selected behind the GUI. And
at the actual scanning by pushing the button of "Scan", "Fine color" scan
mode is selected.
The source code about this is the following part of the canon-sane.c.
===========================================================================
#if 1
DBG (3, "sane_start: sending DEFINE SCAN MODE for scan control
conditions\n");
memset (wbuf, 0, sizeof (wbuf));
wbuf[0] = 0x20;
wbuf[1] = 14;
/* modification for FB620S */
if ( s->hw->info.model == FB620 && strcmp (mode_str, "Fine color") == 0)
{
wbuf[15] = 1 << 3; <=====This parameter is "1" then "Fine color" is
available.
}
else
wbuf[15] = 0; <=====This parameter is "0" then "Fine color" is not
available.
/* For preview use always normal speed: */
if (s->val[OPT_PREVIEW].w == SANE_FALSE)
wbuf[11] = s->scanning_speed;
status = define_scan_mode (s->fd, SCAN_CONTROL_CONDITIONS, wbuf);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "define scan mode failed: %s\n", sane_strstatus (status));
return (status);
}
DBG (3, "sane_start: sending GET SCAN MODE for scan control
conditions\n");
memset (ebuf, 0, sizeof (ebuf));
buf_size = sizeof (ebuf);
status = get_scan_mode (s->fd, SCAN_CONTROL_CONDITIONS, ebuf, &buf_size);
if (status != SANE_STATUS_GOOD)
{
DBG (1, "sane_start: GET SCAN MODE for scan control conditions
failed\n");
sanei_scsi_close (s->fd);
return (SANE_STATUS_INVAL);
}
for (i=0; i<buf_size; i++)
{
DBG(3, "scan mode byte[%d] = %d\n", i, ebuf[i]);
}
#endif
===========================================================================
I would like to change this program as follows.
When I select the "Fine color" scan mode...
1. At the preview running, "wbuf[15] = 0" in the define_scan_mode function
is selected.
2. At the actual "Scan" not the preview, "wbuf[15] = 1 << 3" in the
define_scan_mode function is selected.
But if I select the "Fine color" scan mode, wbuf[15] = 1 << 3 in the
define_scan_mode function is running at both the preview and the actual
scan.
I don't know the way of the modification about this problem.
Does anybody have a good idea ?
The canon backend files are in the Web page of "SANE backend for Canon
scanners".
regards,
-----------------------------
Mitsuru Okaniwa
email : m-okaniwa@bea.hi-ho.ne.jp
tel : (Japan)0566-26-6105
-----------------------------
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