Hai, henning:
Thanks you
I set base_xdpi of Mustek 2400usb scanner to 1200, then the gray Image
is OK . But when I scan in color Mode , the bytes per line only 1/3 of I
set. In backend I can't understangding some parameters (what is the
difference of bace_xdpi and optical_xdpi? what's mean of ld_shift_r ,
ld_shift_g, ld_shift_b?
There are some parameters in model.
static GT68xx_Model mustek_2400usb_command_model_info={
"mustek-2400usb", /* name
*/
"Mustek", /* vendor
*/
"Mustek 2400USB", /* model
*/
"P9fw.usb", /* firmware file name
*/
&mustek_gt6801_command_descriptor, /* Model info */
600, /* optical_xdpi
*/
1200, /* optical_ydpi
*/
1200, /* base_xdpi 600
*/
600, /* base_ydpi
*/
1200, /* ydpi_force_line_mode
*/
SANE_TRUE, /* use base_ydpi for all
resolution */
{600,300,150,75,50,0}, /* xdpi_value
*/
{1200,600,300,100,50,0}, /* ydpi_value
*/
{8,0}, /* bpp_gray_values
*/
{8,0}, /* bpp_color_values
*/
SANE_FIX(15.0), /* start of scan area in mm
*/
SANE_FIX(25.0), /* start of scan area in mm
*/
SANE_FIX(220.0), /* width of scan area in
mm */
SANE_FIX(299), /* high of scan area in mm
*/
SANE_FIX(0.0), /* start of white strip in mm
*/
SANE_FIX(7.0), /* start of black mark in mm
*/
SANE_FIX(0.0), /* start of scan area in TA mode
in mm */
SANE_FIX(0.0), /* start of scan area in TA mode
in mm */
SANE_FIX(100.0), /* width of scan area in
TA mode in mm */
SANE_FIX(100.0), /* high of scan area in TA
mode in mm */
SANE_FIX(0.0), /* start of white strip in TA mode
in mm */
0, /* ld_shift_r
*/
16, /* ld_shift_g
*/
32, /* ld_shift_b
*/
0, /* ld_shift_double
*/
LampOrder_RGB, /* color_order
*/
{0x16,0x06,0x16,0x06,0x16,0x06}, /* AFE param 0x13
0x04 0x0f 0x02*/
{0x157,0x157,0x157}, /* exposure
time */
SANE_FALSE /* CCD
scanner */
0
};
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