Hi,
>
> this is the current version of the TODO list. Please check and comment.
>
Any chance to add new functions here for next release like
Warmup time, H/W jpeg scanning & S/W decoding...
Best Regards,
kw
> Bye,
> Henning
>
> TODO (2000-10-29)
>
> ******** todo ********
>
> backends
> --------
> * add new backends (?)
> - as6e http://as6edriver.sourceforge.net/
> - bh http://www.martoneconsulting.com/sane-bh.html
> - Polaroid SprintScan 35 LE [should be included into microtek]
> Dick Bruijn <dick@wau.mis.ah.nl>
> - primax http://primax.sourceforge.net/
> - hp4200 http://hp4200-backend.sourceforge.net/
> - v4l2 http://video.inodes.org/sane-v4l2/
> - Relisys Scorpio Super 3 SCSI II by Tyler
> Bindon <martica@martica.org>.
> - Linux Handscanner Ioctl Interface scanner by Harald
> Bauer <hbauer@online.de>
> - sane-pie (Pacific Image Electronics series of ScanAce SCSI
> scanners, and the Devcom 9636/9630 BlackWidow)
> http://www.munton.demon.co.uk/sane
>
> * use DBG(...) instead of fprintf(stderr, ...)
> - microtek
> - microtek2
>
> * check #include <lalloca.h> (is this a global system header
> on any platform? Otherwise --> "lalloca.h")
>
> * make authorization_callback work in net-backend and saned
>
> * check net/saned
> - net backend segfaults if saned isn't started
> - don't just ignore the byte-order for the image data (needed to
> support depths > 8 bits/channel)
>
> * qcam: implement auto mode for brightness and black-level (don't
> just advertise it!) Actually, implement an auto "backend" instead
> that can be plugged in front of any backend with brightness/contrast
> etc controls
>
> * qcam: figure out how/if to support bulb mode
>
> * qcam: convert to use sanei_pio functions instead of direct port
> access.
>
> doc
> ---
> * add sane manpage
> - versioning system
> - SANE API
>
> * add sane-usb manpage
>
> * Documentation for sanei API
> - any ideas for this?
>
> frontends
> ---------
> * Remove frontends (at least xscanimage/xcam) from distribution. Create
> new package for frontends.
>
> * add new frondends (possibly to frontend package) (?)
> - xsane
> - scanadf
>
> * add possibility to use external filters to xscanimage/xsane (?)
>
> * xscanimage/xcam: support depths > 8 bits/channel
>
> * xscanimage: provide both scale and textentry for ranges (make new
widget)
>
> * xcam: provide access to option doc strings
>
> * xscanimage: scanning of images whose heights is not known a priori is
not
> supported yet; this is going to be important for handheld scanners. At
> least the frontend shouldn't crash or produce invalid pnm files when
> it gets a length of -1.
>
> * xcam: add dithering and support for SANE depths other than 8 bit (test
> with Mustek backend, for example)
>
> * xcam: add recording feature (e.g., GIF, JPG, or MPEG)
>
> * dll: Rewrite to use libtool ltdl library
>
> * For 3-pass scanners, xscanimage doesn't update the scan progress
> bar properly between scans; the scanner seems to be faster than
> xscanimage can write to disk (problem: seek for every byte). This
> doesn't happen as GIMP-plugin. It doesn't happen in blocking mode
> either.
>
> * Add a check in the frontends if the backend delivers more data than
> it announced by sane_get_parameters to avoid segfaults with bad
> backends?
>
> * Adapt xscanimage to new GIMP API. Try to make it backwards compatible
> with old GIMP versions if possible.
>
> sanei
> -----
> * don't install sanei_* headers
>
> * add sanei_authorize (function for all backends)
>
> misc
> ----
> * update libtool versioning system
> - -version-info is used but with the current version number system
> -release should be used.
> - look for AIX problems (overwriting shared libs with eachother
> because all libs are named libsane.so.1)
> - look for Irix/cc problems (program searches for libsane.so.2 instead
> of libsane.so.1). This was fixed by a "bad hack" which should be
> reverted .
>
> * remove compiler warnings (>400 warnings even in disable-warning mode!)
>
> * Test SANE on different os/platforms, fix possible compilation problems
> Test methods: scanimage -d pnm:0 --filename=file.pnm -T
> scanimage -d net:localhost:pnm:0 --filename=file.pnm -T
> (not possible if I'm not root on the system)
> xscanimage / gimp with xscanimage plugin (where
available)
> All the above with shared and static libraries.
>
> * move .desc files for backends that are not included in SANE to
> different directory (e.g. backends and external-backends)
>
> * Add a check for installed sane versions.
>
> * Print a warning when already a sane version is installed.
>
> * Maybe add script to detect and deinstall existing sane versions
>
> ******** done ********
>
> * 0 is white for sane in lineart and halftone, however, 0 is black for
> the other modes. Possible reason: pnm data format. The SANE standard
> doesn't talk about this (added point to SANE standard)
> * add ADF and TA entries to .desc files (not done, probably webpage gets
> too wide)
> * check DBG problems for non gcc compilers:
> - no backend name output
> - only global debug level
> * dll: make it robust against it being listed in the configuration
> file (currently bad things will happen if dll attempts to load itself)
> * scanimage: add information about backend:devicename in the man
> page and scanimage --help.
> * scanimage: check if devicename starts with a / and print a warning
> message
> * scanimage: if no devices are detected print a message
> * use sanei_config_read() instead of fgets()
> * use #include "sane/..." instead of #include <sane/...>
> * Update LEVEL2 file. Ideas:
> * xscanimage: Fix "Gtk-CRITICAL **: file gtkmain.c: line 534 ..." bug
> when no SANE devices found
> + PREVIEW: maybe there should be an option to limit the preview
> scan to the selected area? YES => this will also make it easier
> to avoid the scan area selection to get confused when the user
> resizes the preview area in a way that changes the aspect ratio;
> in essence we want to allow for the preview-image to be a subregion
> of the preview-window (done in xsane)
> + xcam: allow disabling of advanced options and tooltips
> + man page for xcam
> + scanimage: support depths > 8 bits/channel
> + upgrade to GTK 1.2 (but stay backwards compatible to 1.0 if possible)
> + saned: check_host() consider using strncasecmp()
> + GTK: changing the length unit causes dirty pixels in the unit-labels
> of the "Geometry Group"
> + preview: image data doesn't get preserved properly when changing
> scan area size (reproducable by changing Mustek Scan source to TA)
> + preview: when popping up the preview window, the current scan area is
> not visible
> + qcam: test b&w support (need volunteer!)
> + hp: convert to use pixel-unit commands only; HP 5P doesn't support
> decipoint commands
> + mustek: the MFS-06000SP with firmware v3.12 does not seem to need any
> line-distance correction at all!?!
> + scanimage/xscanimage: when a scanner is busy while probing for devices,
> the device is dropped silently from the list of available devices; this
> is confusing particularly when remote controlling a device; it should
> be possible to distinguish between a device that's busy and one that's
> absent
> + xscanimage: program crashes when preview window is popped down while
> preview is being acquired!
> + Mustek backend crashes when invoked via xscanimage through the network
> backend. It does not crash if there are no saved device settings.
> + gtkglue: support vectors (requires a "graph" widget; see
gimp/app/curves.c)
> + xscan: make scrollbar wider
> + xscan: at startup or after rebuilding the dialog, the notebook widget
> displays both the standard and advanced options simultaneously
> + xscan: pnm backend causes crash when hitting "Defaults" button
> + scan: add three pass scanning support
> + xscan: double-clicking selection should imply OK
> + xscan: enabling the gtk_rc_parse() code causes segfault when scanning in
> three-pass mode (pnm backend) => bug in gtkstyle.c (patch submitted)
> + qcam: implement "christmas light" filter
> + xscan/qcam: after scanning a preview, the original scan area seems to
> get lost somehow => bug in restoring the scan area settings
> + qcam: image always comes out black until the blacklevel has been
modified;
> why is this? => send dummy black-level after qc_reset()
> + xscan: provide access option doc strings
> + xscan: in GIMP mode, RED/GREEN/BLUE frames are not handled properly yet.
> + preview: bit-depth is currently ignored (makes lineart etc fail)
> + sanei: allow saving/restoring options on a per-device and per-user basis
> + xcam: replace ugly top-left/bottom-right corner coordinates with
something
> more useful => they're advanced options now
> + preview: modifying the scan area coordinates should update the selection
> + preview: should we allow saving the current preview image? => yes
> + xscan: make it possible to build with gtk alone (i.e., without gimp
libs)
> + xscan: use same scan-logic as preview (select-based, if possible);
> should be able to share most of the code
> + replace params.first_frame with params.last_frame---i don't know how to
> use the former, the latter would be useful for xcam to implement support
> for individual R/G/B frames
> + saned: add multi-host capabilities (selection-phase ... how ??).
> + saned: add authorization
> + ensure frontend never link sanei_*() functions dynamically
> + always define unique names in backends and define weak-aliases for
> generic names where elf_alias is available---this should make it
> easy to add "pre-load" support to dll.c (either for faster loading or
> for systems that don't have dl*())
> + make install: don't overwrite existing configuration files
> + xcam: let user be able to type in a device string
> + mustek: make sane_close() hang around until sane_cancel() has finished
> + net: implement it: socket-based backend [Andy is working on this]
> + need a camera front end (to allow recording video & audio)
> + qcam: allow changing all parameters "on-the-fly" (while scanning)
> + qcam backend: implement sane_set_io_mode() and sane_get_select_fd()
> + make "scan" print current value of each option
> + make "scan" apply any options before printing help message
> + initialize backend debug level through environment variable (e.g.,
> SANE_DEBUG_LEVEL)
> + allow abbreviating string values and make them case-insensitive (as long
> as they're unique) => see sanei_constrain_value()
> + add support to "scan" for setting options to "automatic"
> + update documentation and convert to latex & html
> + add --width/--height support
> + update Mustek backend with new notion of inactive options
> + in verbose multibit mode print min/max graylevel value
> + Mustek segfaults after ctrl-C => need -Bsymbolic to ensure mustek
backend's
> references to sane_foo() get resolved within backend
> + test parsing of boolean options
> + --mode Gray causes segfault
> + change scan to use getopt_long
> + make Mustek backend work without having to first call get_devices()
> + implement meta backend
> + bring pnm backend up to speed
>
> --
> Source code, list archive, and docs: http://www.mostang.com/sane/
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