Hello,
here's the status of the experimental genesys backend after checkin
last
updates: scanner does origin searching, coarse gain, offset and shading
calibration, then does a 100 dpi color scan, but get stucks in head parking. The
ouput image is shifted on the right, but looks fine.
Current issues I can think of are:
- offset and coarse gain calibration give the same exact values than the
windows driver, so I consider them validated.
- shading calibration can't be validated yet since there are issues in
the scan.
- shading calibration uses a hard coded value in
genesys_dummy_dark_shading
- shading motor's speeds are currently a real mystery to me, so can't
tell how much the head moves.
- there are 2 settings for CCD, one for full resolution, another for
half resolution. So I think we need two regs_0x08_0x0b sets in
Genesys_Sensor.
- genesys_park_head fails after first or second scan, it maybe related
to
the fact we are trying to read to much data during scan.
- genesys_init_registers_for_scan doesn't know the proper current head
position due to motor speed issue in shading calibration, so the
steps to go value is incorrect.
- we need a Genesys_Motor struct where we will move all harcoded values.
- picture data shows that R,G and B data aren't in sync and will need
to be further reordered in genesys_read_ordered_data. Or this is a
bug.
Regards,
Stef
