Le Tuesday 08 July 2008 21:42:09 K?re S?rs, vous avez ?crit?:
> Hi,
>
> On Mondayen den 7 July 2008 23:51:24 m. allan noah wrote:
> > ok guys- take 4:
> >
> > 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
> > page-height
> >
> > 3. Two new SANE_STATUS values: HW_LOCKED and WARMING_UP
> >
> > 4. Nine new SANE_FRAME values: TEXT, JPEG, G31D, G32D, G42D, IR, RGBI,
> > GRAYI, and XML
> >
> > 5. Several new well-known options for buttons and sensors. Backends
> > should use the closest one to the meaning of the label on the scanner
> > or the button's use in the manufacturer's software. Backends may also
> > use a different name if no suitable one is found.
> >
> > well-known buttons:
> > scan, email, fax, copy, pdf, cancel
> >
> > well-known sensors:
> > page-loaded, cover-open
> >
> > 6. Clarify standard text for SANE_CAP_HARD_SELECT to indicate it
> > should be used for polling the current state of hardware sensors and
> > buttons, with a refresh interval <= 1 sec.
>
> I haven't seen a discussion about adding an optional calback mechanism for
> this (I might have missed it). Would it be feasible? I always try to avoid
> polling if possible.
> If it is not easy/fast to implement, it is no biggie for me :)
>
> > 7. 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?)
> >
> > 8. Add common configuration reading function in sanei_* so that new or
> > maintained backends can benefit from it. Wholesale config file
> > restructuring?
> >
> > 9. Require backends to always accept the sanei device name as an
> > alternative to the backend generated name.
> >
> > Most of this stuff is done or in progress, except I have not used tex
> > in years, so it's going to take me a little while to update the
> > standard, unless someone else steps up. And #7 needs some programmer
> > cycles- volunteers? If we can get those (and stef's sanei_config
> > improvements) into cvs, then we can take a look for backends that
> > might need updates, particularly on #9.
> >
> > allan
> > --
> > "The truth is an offense, but not a sin"
>
> Is anybody updating the test backend with the new features? I needed to add
> a gamma table stub to the test backend to be able to implement gammatable
> support in libksane.
>
> --
> K?re S?rs
Hello,
the test backend had been updated some time ago, and provides a
pnm:locked
and pnm:warmup backends that let one test for the new status that may be
returned by a backend.
I have an experimental version of libkscan that supports the new
SANE_STATUS_WARMING_UP by adding the lines after sane_start() in
acquire_data:
#ifndef SANE_CAP_ALWAYS_SETTABLE /* should better be done by detecting SANE's
version in configure and providing a
HAS_SANE_1_1 */
/* warming-up handling */
if( sane_stat == SANE_STATUS_WARMING_UP )
{
do
{
/* TODO some progress/ waiting dialog */
/* re-read to check if warming up is done */
sane_stat = sane_start( scanner_handle );
}
while (sane_stat == SANE_STATUS_WARMING_UP);
}
#endif
Regards,
Stef
