[sane-devel] SANE 1.1.0 Release discussion

m. allan noah kitno455 at gmail.com
Fri May 16 16:21:46 UTC 2008

I have consolidated previous discussions:

Six general points for sane 1.1.x:

 - no changes to function calls
 - no changes to structures
 - 1.0 backends forward compatible with 1.1
 - improve backend consistency
 - support more advanced scanners
 - improve cooperation with modern system services

Specific proposals:

1. Consistent, translatable option groups:

'Standard' = source, mode, resolution
'Geometry' = x/y and paper size params
'Enhancement' = bright/gamma/contrast/thresh, rif, halftone, etc
'Advanced' = compression, calibration, feed controls, etc
'Sensors' = an option for every hardware button or sensor

2. Two new well-known options for ADF paper alignment: page-width and


4. Nine new SANE_FRAME values: TEXT, JPEG, G31D, G32D, G42D, IR, RGBI,

5. One new SANE_TYPE value: HW_BUTTON (do we also need consistent names?)

6. New DBGBM macro for bitmask debugging output (bit # listed below):

1 DBG_LVL_ERROR      (errors only)
2 DBG_LVL_FUNC       (function tracing 'enter xxx()' or 'exit xxx()')
3 DBG_LVL_DETAIL     ('trying action X' or 'action succeeded' etc)
4 DBG_LVL_OPTION     (any sane_option parsing code)
5 DBG_LVL_CALIB      (calibration info)
6 DBG_LVL_IMAGE      (dump image data read from scanner)
7 DBG_LVL_DATA       (dump data packets read from scanner, other than
image or cal?)
8 DBG_LVL_FILE       (write internal data files to disk from within backend?)

7. Add common configuration reading function in sanei_* so that new or
maintained backends can benefit from it. Wholesale config file restructuring?

8. Require backends to always accept the sanei device name as an
alternative to the backend generated name.

Timetable is still feature freeze around July 4th, and release close
to July 30th.

Comments welcome-

"The truth is an offense, but not a sin"

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