2004-08-03 07:47:16 +00:00
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To do:
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======
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- implement coarse calibration to determine settings for analog-front-end
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All CCDs encountered so far seem to need about the same settings however.
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- Store analog calibration data somewhere.
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Use currently used values as default.
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- Suggestions by Marcin Cieslak:
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- clean up structures
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- clean up namespace
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- clean up source formatting ('indent --gnu' ?)
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- implement real calibration, using 12 bit data at 600 dpi
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instead of 8 bit data.at 150 dpi.
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-> is now at 600 dpi, not yet at 12 bit
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- design a mechanism to set the scan and calibration areas
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a) part of HWProps structure, or
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b) set by user at first scan
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- further investigate scanner registers
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a) study backtracking register more
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b) identify bits in bit-oriented registers.
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- add more error checking ('sanity checking') on parameters
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- figure out what the USB interrupts mean that sometimes occur.
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Done
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====
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2004-08-31 18:43:58 +00:00
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- Get rid of mytypes.h / fix types
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Now an int is implicitly assumed to be 32 bit.
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2004-08-03 07:47:16 +00:00
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- make backend comply with tstbackend
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-> all externs and publics removed when compiling towards sane
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- implement sane_cancel properly
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-> done by ullsig
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- implement timing mechanism for scanner lamp
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so scanning can only start if the lamp was already on for 30 seconds
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Possible implementation:
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On startup: if lamp is off, turn it on and start timer
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On scan: if lamp is off, turn it on and start timer. Wait for timer expiry.
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On exit: if scanner chip is niash00012 then turn off lamp,
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otherwise let the scanner turn it off automatically
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-> Implemented by Ullrich Sigwanz
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- try out parallel port scanning on HP3400/4300
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-> parallel port support will be dropped, no people to test/develop it
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- investigate vertical resolution setting of hp3400/4300.
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-> experiment with the motor table, formula is already known to generate it
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-> 600 dpi is possible by doubling most values in the table
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-> 150 dpi can be done by using register 0x06 to skip every other line
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- Add separate gamma tables for R, G, B. This should be easy (look at how
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other backends do it) but is not really required yet.
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-> not required
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