Comment two patches while here.
Version 9b 17-Jan-2016
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Improvements and optimizations in DCT and color calculations.
Normalize range limit array composition and access pattern.
Thank to Sia Furler and Maddie Ziegler for inspiration.
Use merged upsample with scaled DCT sizes larger than 8.
Thank to Taylor Hatala for inspiration.
Check for excessive comment lengths in argument parsing in wrjpgcom.c.
Thank to Julian Cohen for hint.
Add makefile.b32 for use with Borland C++ 32-bit (bcc32).
Thank to Joe Slater for contribution.
Document 'f' specifier for jpegtran -crop specification.
Thank to Michele Martone for suggestion.
Use defined value from header instead of hardwired number in rdswitch.c.
Thank to Robert Sprowson for hint.
Version 9a 19-Jan-2014
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Add support for wide gamut color spaces (JFIF version 2).
Improve clarity and accuracy in color conversion modules.
Note: Requires rebuild of test images.
Extend the bit depth support to all values from 8 to 12
(BITS_IN_JSAMPLE configuration option in jmorecfg.h).
jpegtran now supports N bits sample data precision with all N from 8 to 12
in a single instance. Thank to Roland Fassauer for inspiration.
Try to resolve issues with new boolean type definition.
Thank also to v4hn for suggestion.
Enable option to use default Huffman tables for lossless compression
(for hardware solution), and in this case improve lossless RGB compression
with reversible color transform. Thank to Benny Alexandar for hint.
Extend the entropy decoding structure, so that extraneous bytes between
compressed scan data and following marker can be reported correctly.
Thank to Nigel Tao for hint.
Add jpegtran -wipe option and extension for -crop.
Thank to Andrew Senior, David Clunie, and Josef Schmid for suggestion.
Add cjpeg -rgb1 option to create an RGB JPEG file, and insert
a simple reversible color transform into the processing which
significantly improves the compression.
The recommended command for lossless coding of RGB images is now
cjpeg -rgb1 -block 1 -arithmetic.
As said, this option improves the compression significantly, but
the files are not compatible with JPEG decoders prior to IJG v9
due to the included color transform.
The used color transform and marker signaling is compatible with
other JPEG standards (e.g., JPEG-LS part 2).
Remove the automatic de-ANSI-fication support (Automake 1.12).
Add remark for jpeg_mem_dest() in jdatadst.c.
Support files with invalid component identifiers (created by Adobe PDF).
Adapt full buffer case in jcmainct.c for use with scaled DCT.
Add type identifier for declaration of noreturn functions.
Correct argument type in format string, avoid compiler warnings.
Add missing #include directives in configuration checks, avoid
configuration errors.
pkgsrc changes:
- update MASTER_SITES
- bump ApI_DEPENDS in buildlink3.mk
Upstream changes:
- The new features added with version 6bnb4 are now added upstream (except
exifautotran and jpegexiforient)
Version 7 27-Jun-2009
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New scaled DCTs implemented.
djpeg now supports scalings N/8 with all N from 1 to 16.
cjpeg now supports scalings 8/N with all N from 1 to 16.
Scaled DCTs with size larger than 8 are now also used for resolving the
common 2x2 chroma subsampling case without additional spatial resampling.
Separate spatial resampling for those kind of files is now only necessary
for N>8 scaling cases.
Furthermore, separate scaled DCT functions are provided for direct resolving
of the common asymmetric subsampling cases (2x1 and 1x2) without additional
spatial resampling.
cjpeg -quality option has been extended for support of separate quality
settings for luminance and chrominance (or in general, for every provided
quantization table slot).
New API function jpeg_default_qtables() and q_scale_factor array in library.
Added -nosmooth option to cjpeg, complementary to djpeg.
New variable "do_fancy_downsampling" in library, complement to fancy
upsampling. Fancy upsampling now uses direct DCT scaling with sizes
larger than 8. The old method is not reversible and has been removed.
Support arithmetic entropy encoding and decoding.
Added files jaricom.c, jcarith.c, jdarith.c.
Straighten the file structure:
Removed files jidctred.c, jcphuff.c, jchuff.h, jdphuff.c, jdhuff.h.
jpegtran has a new "lossless" cropping feature.
Implement -perfect option in jpegtran, new API function
jtransform_perfect_transform() in transupp. (DP 204_perfect.dpatch)
Better error messages for jpegtran fopen failure.
(DP 203_jpegtran_errmsg.dpatch)
Fix byte order issue with 16bit PPM/PGM files in rdppm.c/wrppm.c:
according to Netpbm, the de facto standard implementation of the PNM formats,
the most significant byte is first. (DP 203_rdppm.dpatch)
Add -raw option to rdjpgcom not to mangle the output.
(DP 205_rdjpgcom_raw.dpatch)
Make rdjpgcom locale aware. (DP 201_rdjpgcom_locale.dpatch)
Add extern "C" to jpeglib.h.
This avoids the need to put extern "C" { ... } around #include "jpeglib.h"
in your C++ application. Defining the symbol DONT_USE_EXTERN_C in the
configuration prevents this. (DP 202_jpeglib.h_c++.dpatch)
adopted by many Linux distributions as well as FreeBSD ports:
o jpegtran: add "-perfect" switch:
Fail if there are non-transformable edge blocks.
o jpegtran: add "-crop" switch:
Crop to a rectangular subarea.
o jpegtran: correct EXIF handling.
o jpegexiforient: Get and set the Exif Orientation Tag.
o exifautotran: Transforms Exif files so that Orientation becomes 1.
Suggested by dzoe on #NetBSD IRCNet.
And use PKGMANDIR for the INSTALLATION_DIRS.
PKGREVISION not bumped -- no change in default build. And before
would have failed if PKGMANDIR was set to non-default.
