|
Changes for libdmtx
----------------------------------------------------------------- version 0.7.4 [June 2011] library: Relicensed to use Simplified BSD with waiver option library: Added new error codes and messages in dmtxencode.c library: Added DmtxByteList struct and supporting functions library: Changed file header with updated text library: Fixed ECC bug for 144x144 case (thanks Huver!) library: New Reed Solomon implementation library: New repository structure: libdmtx, dmtx-utils, and dmtx-wrappers testing: Added test in compare_generated.sh to create directory if needed testing: Fix compare_generated.sh to prevent false negatives encoder: Review CHK macro strategy encoder: New encoding implementation encoder: Added Base 256 "encode to end of symbol" single byte header encoder: Check ProcessEndOfSymbolTriplet() for same problem fixed in Edifact encoder: Clean up PushCTXValues() passFail handling encoder: Fixed all encoding bugs reported by compare_generated.sh encoder: Fixed encoding bug affecting certain end-of-symbol conditions encoder: Replaced "twothirdsbits" encoder concept (major source of headaches) encoder: Track intermediate states in "optimize best" to handle all possibilities decoder: Use new Edifact decode function that doesn't assume full triplet version 0.7.2 [September 2009] Added initial macro decoding support (thanks Marlon!) Fast quad fill for dmtxDecodeMatrixRegion() (thanks Mackenzie!) Fixed capacity bug with rectangle requests New Vala wrapper (thanks Evan!) Wrapper integration in build system (thanks Evan!) Add libdmtx-X.X.X.zip as source package option Add libdmtx-win32-X.X.X.zip as binary package option Add "project" directory to EXTRA_DIST in Makefile.am version 0.7.0 [March 2009] New Java wrapper (thanks Pete and Dikran!) New .NET wrapper (thanks Vali and Joe!) Added solution and project files for MS Visual Studio 9.0 Reader support for FNC1 and upper shift (thanks Robin!) Support for byte-padded rows through dmtxImageSetProp() New no-copy image handling with configurable pixel packing Moved image scaling factors to DmtxDecode Moved scan cache from DmtxImage to DmtxDecode Eliminate types DmtxRgb, DmtxColor3, and DmtxGradient API updates for consistent naming and conventions Added dmtxEncodeSetProp() and dmtxEncodeGetProp() Option to print extended ASCII as UTF-8 (thanks Robin!) Fixed diagnostic image output Fixed misrepresented capacity in verbose mode True vector SVG output bypassing ImageMagick (thanks Richard!) Use ImageMagick to write images in major raster formats Fixed several bugs and compiler warnings version 0.6.0 [November 2008] dmtxread now scans all major image formats [Olivier] New encoding/decoding Ruby wrapper [Romain] Reduced memory footprint Will scan multiple barcodes per image Various platform-specific improvements Initial work preparing for custom pixel packing in future Begin static analysis cleanup with splint New --disable-dmtxread and --disable-dmtxwrite [Romain] Ability to specify max/min expected barcode sizes New edge neighbor tracking (Hough + 2 way edge cache) Info cache to track scan progress and avoid rescanning pixels Major reduction in floating point operations New informative return codes (found, not found, error) Read input from STDIN Diagnostic images display trail left by scanning logic Option to write output to STDOUT [Olivier] PHP wrapper now compiles with recent libdmtx Dedicated README.xxx instructions for specific platforms version 0.5.2 [September 2008] Move SetRangeLimit and SetScanRegion into library Replace DMTXUTIL_SUCCESS/ERROR with DMTX_SUCCESS/FAILURE Add edge threshold filtering Add encoding support for 144x144 barcodes Fixed encoding case when message starts with two digits Fixed bug in range limit option Add dynamic image shrinking (pixel skipping) Add step-by-step diagnostic image dump (debug build) Fixed bug in minimum scan gap setting Removed y-flip from internal pixel storage Added strict border tests to eliminate false positives Added squareness deviation filter Implement simplified Hough transform for locating first edge Several behind-the-scenes performance enhancements Python wrapper update; 15x faster (thanks Jonathan!) New PHP wrapper code added Various improvements when building for OS X and FreeBSD version 0.5.1 [July 2008] Fixed Extended ASCII encoding bug Fixed error correction bug related to multiple interleaved blocks Added timeout condition for region detection Allow partial and complete disabling of error correction Replaced DmtxPixel struct with DmtxRgb for safe pixel copies Tighter integration with libfec Conditional build logic for libtiff Added placeholder for new utility, dmtxquery Added unit test program for testing libdmtx internals Include local copies of getopt1.c, getopt.c, and getopt.h Various things to help compiling in MS VC++ Lots of holes filled in comments (Doxygen) Fixed experimental Data Mosaic decoding New Cocoa/iPhone wrapper (thanks Stefan!) version 0.5 [April 2008] Error correction using libfec (thanks Florian!) Rework encoding and decoding API for consistency and intuitiveness Handle region detection and region decoding as separate tasks Pass found regions back to calling app before attempting decode Image mask approach (for performance and multi-barcode scans) Fix TestForEndOfSymbolEdifact() to handle special cases correctly Roll scan pattern into core library (inward breadth-first cross) Replace dmtxScanLine() with dmtxScanPixel() Implement 4-direction weighted module decisions (eliminates thresholds) Add ability to scan portion of image Add --diagnose option that dumps image with embedded scan infomation Added Z rotation angle (in degrees) to verbose output Move ASCII and codeword output to separate --preview option Added -R option for setting image print resolution in dpi (PNG only) Remove gltest and simpletest from default build target Update Subversion to be keyword friendly ($Id$) Updated documentation to reflect API and option changes version 0.4 [December 2007] Remove arbitrary sz scaling (100.0) since it doesn't matter anyway Fix 4 bottom-right modules in sizes where they are not used (thanks Matthias R.!) Replace callback references with preprocessor macros Implement remaining encodation schemes for encoding (X12, Base 256, etc...) Implement remaining encodation schemes for decoding (X12, Base 256, etc...) Implement --auto-best option for best possible encoding efficiency Implement multi-region symbols Read and write rectangle barcodes Use GNU autotools (autoconf, automake, libtool) New region detection overhaul Include initial version of Python bindings from pydmtx project (thanks Dan!) Add decoding functionality through Python Add marathon images to project (thanks john@sportcam.net!) Fix dmtxread crash when same barcode is found more than 16 times Verbose messages describing traits of detected barcodes --codewords option to print codewords instead of decoded message --newline option to insert newline character at end of output Additional output formats (PNG, ASCII, codewords) 'make test' executes regression tests for encodation version 0.3 [October 2006] Several high-level changes: build process, naming consistency, file layout Added new automatic style checks in script directory ("make style") Implemented remaining encodation schemes for decode (X12, Base 256, etc...) Fixed instability/regressions that were introduced in v0.2 release Color sampling now averaged from multiple pixel locations Size calibration accuracy improved with new approach dmtxread: increased default scanline count, added multi-page TIFF format dmtxwrite: bug fixes, implemented -o option Improved documentation: deps listed in INSTALL, new man page for dmtxwrite version 0.2 [June 2006] Cleaned up program structure surrounding decoding process Improved API for real-world use (no longer just dumping results to STDOUT) Added "dmtxread" command line utility Added "dmtxwrite" command line utility Implemented Reed-Solomon error detection Created "simpletest.c" for full circle processing test Now using libpng(3) in library to read Data Matrix images Improved documentation (somewhat) version 0.1 [April 2006] Initial release |