Changes in TIFF v3.6.1

References

Current Version

v3.6.1 (tag Release-v3-6-1)

Previous Version

v3.6.0

Master Download Site

https://download.osgeo.org/libtiff/

Master HTTP Site

http://www.simplesystems.org/libtiff/

This document describes the changes made to the software between the previous and current versions (see above). If you don't find something listed here, then it was not done in this timeframe, or it was not considered important enough to be mentioned. The following information is located here:

Major changes

  • New utility tiff2pdf for converting TIFF images directly into PDF.

  • New TIFFcolor color conversion module.

  • Full support for Orientation tag in TIFFRGBAImage interface.

  • Many bugs fixed.

Software configuration changes

  • libtiff/makefile.vc, tools/makefile.vc: Support for IJG JPEG library.

  • Makefile.in: Add an absolute path to the test_pics.sh call.

  • Makefile.in: Add an absolute path to the test_pics.sh call.

  • libtiff/tiffcomp.h: #define _BSDTYPES_DEFINED when defining BSD typedefs.

  • configure, libtiff/Makefile.in, libtiff/mkversion.c: Relative buildings fixed.

  • Makefile.in: Add an absolute path to the test_pics.sh call.

Library changes

  • libtiff/tif_color.c, libtiff/tif_getimage.c, libtiff/tiffio.h: Added support for ReferenceBlackWhite tag handling when converted from YCbCr color space as per bug Remote Sensing bugzilla #120 [no longer available].

  • libtiff/tif_getimage.c, libtiff/tif_aux.c: Read WhitePoint tag from the file and properly use it for CIE Lab 1976 to RGB transform.

  • libtiff/tif_getimage.c, libtiff/tiffio.h: Finally resolved problems with orientation handling. TIFFRGBAImage interface now properly supports all possible orientations, i.e. images will be flipped both in horizontal and vertical directions if required. 'Known bugs' section now removed from the appropriate manual pages.

  • libtiff/tif_luv.c: Fixed bug in 48-bit to 24-bit conversion routine, reported by Antonio Scuri.

  • libtiff/tiffio.h, libtiff/tif_codec.c: Added new function TIFFIsCODECConfigured(), suggested by Ross Finlayson.

  • libtiff/tif_ojpeg.c: TIFFVGetField() function now can properly extract the fields from the OJPEG files. Patch supplied by Ross Finlayson.

  • libtiff/tif_dir.h: _TIFFFindOrRegisterdInfo() declaration replaced with _TIFFFindOrRegisterFieldInfo() as reported by Ross Finlayson.

  • libtiff/tif_dirinfo.c: Implemented binary search in _TIFFMergeFieldInfo(). Patch supplied by Ross Finlayson.

  • tif_dirread.c: do not mark all anonymously defined tags to be IGNORE (as it was done in 3.6.0).

  • libtiff/tiff.h, libtiff/tif_dirinfo.c: Added support for IFD (13) datatype, introduced in "Adobe PageMaker TIFF Technical Notes".

  • libtiff/tif_color.c, libtiff/tif_getimage.c, libtiff/tiffio.h: New color space conversion code: CIE L*a*b* 1976 images now supported by the TIFFRGBAImage interface. YCbCr to RGB conversion code also moved there and now has TIFFcolor publicly available interface. These routines currently used in TIFFRGBAImage interface only and not supported in other libtiff tools yet. So if you want, for example, to convert CIE Lab image into PostScript file you should do it in two steps: change colorspace to RGB using tiff2rgba utility and then process it with the tiff2ps.

  • libtiff/tif_tile.c: Remove spurious use of "s" (sample) in the planarconfig_contig case in TIFFComputeTile() as per bug Remote Sensing bugzilla #387 [no longer available].

  • libtiff/tiffiop.h: New macros: TIFFmax and TIFFmin.

  • libtiff/tiffio.h, libtiff/tif_strip.c: Added TIFFRawStripSize() function as suggested by Chris Hanson.

  • libtiff/tif_lzw.c, libtiff/tif_fax3.c: Proper support for update mode as per bug Remote Sensing bugzilla #424 [no longer available].

Tools changes

  • tiff2pdf:: New tool, written by Ross Finlayson, to directly convert TIFF files to PDF.

  • tiffgt: Unmaintained and platform dependent sgigt utility removed and replaced with the completely rewritten portable tool (depend on OpenGL and GLUT). This tool will not build by default.

  • ras2tiff: Properly determine SUN Rasterfiles with the reverse byte order (it is reported by the magic header field). Problem reported by Andreas Wiesmann.

  • raw2tiff: Implemented image size guessing using correlation coefficient calculation between two neighbour lines.

Contributed software changes

  • contrib/pds/tif_pdsdirread.c, contrib/pds/tif_pdsdirwrite.c: Use TIFFDataWidth() function instead of tiffDataWidth array.

LZW compression kit changes