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- To do:
- ======
- - implement coarse calibration to determine settings for analog-front-end
- All CCDs encountered so far seem to need about the same settings however.
-
- - Store analog calibration data somewhere.
- Use currently used values as default.
-
- - Suggestions by Marcin Cieslak:
- - clean up structures
- - clean up namespace
- - clean up source formatting ('indent --gnu' ?)
-
-
- - implement real calibration, using 12 bit data at 600 dpi
- instead of 8 bit data.at 150 dpi.
- -> is now at 600 dpi, not yet at 12 bit
-
- - design a mechanism to set the scan and calibration areas
- a) part of HWProps structure, or
- b) set by user at first scan
-
- - further investigate scanner registers
- a) study backtracking register more
- b) identify bits in bit-oriented registers.
-
- - add more error checking ('sanity checking') on parameters
-
- - figure out what the USB interrupts mean that sometimes occur.
-
-
-
- Done
- ====
-
- - Get rid of mytypes.h / fix types
- Now an int is implicitly assumed to be 32 bit.
-
- - make backend comply with tstbackend
- -> all externs and publics removed when compiling towards sane
-
- - implement sane_cancel properly
- -> done by ullsig
-
- - implement timing mechanism for scanner lamp
- so scanning can only start if the lamp was already on for 30 seconds
- Possible implementation:
- On startup: if lamp is off, turn it on and start timer
- On scan: if lamp is off, turn it on and start timer. Wait for timer expiry.
- On exit: if scanner chip is niash00012 then turn off lamp,
- otherwise let the scanner turn it off automatically
- -> Implemented by Ullrich Sigwanz
-
- - try out parallel port scanning on HP3400/4300
- -> parallel port support will be dropped, no people to test/develop it
-
- - investigate vertical resolution setting of hp3400/4300.
- -> experiment with the motor table, formula is already known to generate it
- -> 600 dpi is possible by doubling most values in the table
- -> 150 dpi can be done by using register 0x06 to skip every other line
-
- - Add separate gamma tables for R, G, B. This should be easy (look at how
- other backends do it) but is not really required yet.
- -> not required
-