0.3

version 0.3:

• add interface stub files
• fix wait timeouts
• fix XImage format filtering
• fix several error handling corner cases
• fix c++ error handling
• add missing Window.h
• add better hierarchy to library sources
• build configuration fixes
• portability fixes
• packaging updates
• fix zebracam beeps
• fix some RGB component ordering and XImage format problems
• fix window resize and redraw state problems
• fix EAN testcase in test_decode - thanks to Steffen Kube for the patch!
• add APIs and (hidden) zebracam options to force specific formats for debug
• add example scripts
• documentation updates
• remove implementation of deprecated img_walker
• add XImage formats
  • basic support for 16-bit depths
• add some missing rgb format conversions
• add basic overlay
  • currently only markers at detected scan locations (needs improved)
• fix memory leak for converted images w/new cleanup semantics
• migrate inter-frame consistency check from old zebracam into image_scanner
  • add API to enable/disable/flush result cache
  • add API to retrieve cache status from returned symbol
• cleanup user_wait blocking semantics for various state combinations
• fix bug w/v4l1 not unlinking dequeued image
• major restructuring for improved modularity
  NB not all changes are are backward compatible!
  • modular support for v4l2 falling back to v4l1
  • flexible support for more varied image formats (incomplete)
  • added reusable abstractions for: an "image" object and associated
    metadata, a "video" input object and a "window" output object
  • added new "processor" API to wrap everything together, simplifying
    trivial application usage (including zebracam and zebraimg)
  • removed deprecated "img_walker" interface, completely replaced by
    more integrated "image_scanner" (moving toward more image processing)
  • updated/added c++ APIs, including improved iterator interfaces
• removed SDL dependency due to various usage incompatibilities
  (most notably the inability to embed video window into a widget)
• cleaned up zebracam and zebraimg command line processing (bug #1838535)
• many useful enhancements thanks to proposal by mhirsch45 (req #1759923)
  including:
  • v4l2 support
  • support for UYVY image format
  • zebracam cursor hiding
  • zebracam audio mute
  • command line video device specification,
• significant error handling and debug improvements
• some associated documentation updates
• various new test programs (slowly working toward more formal test suite)
• add missing xlink namespace to dbg_scan generated output (bug #1764188)
• qualify char types as [un]signed to avoid non-portable C ambiguity
  • thanks to [email protected] and Colin Leroy for the patches!
    (bug #1759914)
• add integrated 2D image scanning API
  • automatically ties to internal scanner and decoder
  • results reported via new symbol API
  • deprecated previous, cumbersome img_walker interface
  • uses new simpler/faster and denser grid pattern (FIXME add 45 and 135)
  • first step toward more sophisticated image processing
• updated zebraimg to use new ImageScanner API
  • add initial decode location tracking
• updated zebracam to use new img_scanner API
  • extended cache to track multiple symbols per-image
  • add initial decode location tracking
  • removed scan grid overlay
• add configure check for ImageMagick version >= 6.3.0
• configure dumps ImageMagick, SDL and firefox versions for debug
• add NPAPI plugin stub and build infrastructure
• flush zebracam output after each scanned symbol
• integrate RPM packaging spec file - thanks to V�t Hrachov� for the draft!
  (patch #1723536)
• finally add HACKING to distribution/install (bug #1698202)
• add extra documentation files to install (README NEWS INSTALL, etc)
• Debian package patch for 0.2 - thanks to V�t Hrachov�:
  • add libsdl1.2-dev as a build dependency
  • update automake (>= 1:1.10) as a build dependency
  • new package

0.2: * update distribution to include debian packaging

version 0.2:

• update distribution to include debian packaging
• add consistency checking to zebracam
• add redundant output suppression to zebraimg
• fix couple of Code 128 decode table bugs
• fix reversed Code 128 decode
• add outstanding scanner edge flush to new_scan()
  • API change: scanner reset/new_scan() now return scan/decode status
  • update zebracam and zebraimg to call this between each walker pass
    (interface still needs improvement...)
    => improves in scan results for many cases
• fix dbg_scan filename generation so results go in local directory
• continue Code 128 refinement
  • finish character set C decode/expansion
  • add per-character validation
  • resolve scan direction in separate postprocessing pass before handling
    ASCII conversion
  • add several img_walker passes parallel to major axis (for long symbols)
  • add simple character set C example to test_decode
• promote zebraimg images to TrueColor so colored scan pattern always shows
• more dbg_scan tweaks
• significant scanner improvements
  • changed "classic" [-1 0 1] first differential kernel to [-1 1]
    to improve minimum edge resolution to single pixel elements
    => still need to do some more research and validate assumptions
  • adaptive thresholding fixes
  • adjusted filtering for better edge detection
  • separate constants out to defines (FIXME add config API?)
• fix EAN-13 secondary determinant decoding
• dbg_scan tweaks to make annotations smaller/more usable
• add get_color() interface to decoder
• annotated zebraimg scan pattern for marginally useful high-level debug
• random include cleanup
• cleanup 64-bit compile warnings in zebraimg (bug #1712504)
• add first-pass partial support for Code 128
  • separate out more EAN state from shared state
  • internal interface changes
  • finish dynamic buffer management
  • add shared resource locking
  • add Code 128 to test_decode program
    => still needs additional functionality and plenty of debug
    => reading both Code 128 and EAN still destabilized
• add diagnostic program test_video to dump more verbose video debug
• incorporate documentation into Debian package
  • thanks to V�t Hrachov� for the patch!
• fix VPATH doc builds (requires automake-1.10 and autoconf-2.61)
• build and dist fixes
  • suppress documentation rebuilds in distributed sources
• add Debian packaging sources - thanks to V�t Hrachov� for the patch!
• add DocBook template and build infrastructure
• add manpages for zebracam and zebraimg
• add GNU standard options to zebracam and zebraimg
• internal decoder restructuring to support additional symbologies
  • separated out 1-D decoder infrastructure into generic internal API
  • moved EAN/UPC specific decoding into it's own module
• fix confusing configure behavior which quietly avoided building
  targets with missing dependencies(?!)
  configure will now fail with a descriptive error message if you
  do not have Magick++ and fail to specify --without-imagemagick or
  do not have SDL and fail to specify --without-sdl
• add configure summary describing what will be built (req #1698196)
• fix parity encoding in test_decode and add decoded symbol output
• introduce Code 128 symbol type
• increase width of zebra_symbol_type_t to 16 bits
• add HACKING (bug #1698202)

0.1

version 0.1:

• add NEWS and ChangeLog
• fix some config/build issues found on other boxes
• add missing ImageWalker install
• fix scanner runaway threshold calculation bug
• fix zebracam/zebraimg bugs overwriting currently scanning image w/scan
  pattern
• add c++ interface to img_walker
• apply ImageWalker to zebraimg
• add decoder soft reset on partial mismatch
• finish basic decoder symbol assembly/reporting
• add decoder symbol checksum verification
• add callback API option to decoder for "async" symbol processing
• add "image walker" library API to trace scan pattern over 2D images
• apply image walker to zebracam (C++/zebraimg scan pattern still TBD)
• add audio feedback to zebracam (still has long latency)
• add zebracam key cmd to dump frame to file (for debugging)
• fixes for decoder/scanner reset/new_scan
• fixes to scanner initialization and algorithm tweaks
• made decoder less sensitive to violated quiet-zone
• apply zebraimg workaround for imagemagick image display bug
• add string names for symbol types to library and API to access them
• add dbg_scan test program for visually debugging image scanner (and
  decoder)
• add test_walk for basic image walker sanity/debug
• removed recursive makes in favor of monolithic build
• renamed some makefiles accordingly
• finished some final symbol data construction
• added result callbacks to decoder APIs for data reporting
• zebraimg hooks into callback
• zebracam still seems to "hang" in undecodeable state?
• populate svn with current sources.
• most of the basic functionality is included and working.
• still need to combine final decode data, finish addons, etc (see TODO).
• c++ wrappers are included and tested, but API may need tweaked.
• zebraimg and zebracam basically working but need cleanup/polish.
• need to create some basic documentation...
• initial repository layout