Hdf Zlib File

HDF5 provides two pre-defined filters for compression (ZLIB and SZIP). All other compression methods must be registered with HDF5 before they can be used. Before formally using a third-party filter in an application, it should be registered with The HDF Group, as well. The gzip format was designed for single- file compression on file systems, has a larger header than zlib to maintain directory information, and uses a. The following tar files have been placed on the download site. Z hdf-4.2.10.tar.gz zlib-1.2.8.tar.gz jpegsrc.v6b.tar.gz HDF-EOSREF.pdf HDF-EOSUG.pdf.

  1. Hdf Zlib File Extension
  2. Hdf Zlib File

A Massively Spiffy Yet Delicately Unobtrusive Compression Library
(Also Free, Not to Mention Unencumbered by Patents)

(Not Related to the Linux zlibc Compressing File-I/O Library)

Welcome to the zlib home page, web pages originally created by Greg Roelofsand maintained by Mark Adler.If this page seems suspiciously similar to the PNG Home Page, rest assuredthat the similarity is completely coincidental. No, really.

zlib was written byJean-loup Gailly (compression) andMark Adler(decompression).

Current release:

zlib 1.2.11

Zlib

January 15, 2017

Version 1.2.11 has these key improvements over 1.2.10:

  • Fix deflate stored bug when pulling last block from window
  • Permit immediate deflateParams changes before any deflate input
Due to the bug fixes, any installations of 1.2.9 or 1.2.10 should be immediately replaced with 1.2.11.

Version 1.2.10 has these key improvements over 1.2.9:

  • Fix bug in deflate_stored() for zero-length input
  • Fix bug in gzwrite.c that produced corrupt gzip files

Version 1.2.9 has these key improvements over 1.2.8:

  • Improve compress() and uncompress() to support large lengths
  • Allow building zlib outside of the source directory
  • Fix bug when level 0 used with Z_HUFFMAN or Z_RLE
  • Fix bugs in creating a very large gzip header
  • Add uncompress2() function, which returns the input size used
  • Dramatically speed up deflation for level 0 (storing)
  • Add gzfread() and gzfwrite(), duplicating the interfaces of fread() and fwrite()
  • Add crc32_z() and adler32_z() functions with size_t lengths
  • Many portability improvements
You can also look at the complete Change Log.
Canonical URL: http://zlib.net/ (US)

zlib is designed to be a free,general-purpose, legally unencumbered -- that is, not covered by any patents-- lossless

Code to generate any CRC, with a list of CRC descriptions.crcany.c can take a description of a CRC and compute that CRC efficiently. It includes bit-wise, table-driven byte-wise, and table-driven word-wise CRC algorithms.
Code to modify a message so that it generates the desired CRC.spoof.c takes an abbreviated description of the CRC, the exclusive-or of the current CRC of the message and the desired CRC, the length of the message, and a list of bit locations in a message, and tells you which of those bits should be inverted in the message to get the desired CRC. Note that it does not need the message itself, due to the linearity property of CRCs.

ZIP File Processing Bonus Software

Code to read a zip file as a stream and extract its contents.sunzip.c will read a zip file from stdin and extract the files therein that use compression methods 0, 8, 9, or 12 (stored, deflate, deflate64, or bzip2). It accepts Zip64 input.
Code to merge multiple zip files into a single zip file.zipknit.c accepts Zip64 input files, and will create Zip64 output if the combined size of the merged zip file warrants it. All compression formats are permitted, since no decompression or recompression is performed. Encrypted entries are permitted, and pass through unscathed.

Related External Links

zlib for Linux, both shared and static plus headers (RPM format, many architectures)
zlib for Solaris (alternate)
zlib for macOS (Mac OS X): zlib is already included as part of macOS
zlib for Palm Pilot
zlib for Newton OS
zlib for Windows CE
zlib for Windows 9x/NT/2000/XP/2003 (DLL version, plus related utilities)
zlib for Windows 9x/NT (DLL and static version)
DotNetZip zip file manipulation for .NET, and more (including replacements for the buggy Microsoft GZipStream and DeflateStream classes)
zlib for .NET in C#
zlib DLL wrapper for .NET in C#
Zip for .NET
Mark Nelson's ZlibTool article (January 1997)
zlib C++ wrapper for the gz* functions.
C++ zlib and gzip filters in an iostream framework.
zlib 32-bit OCX (C++ source and binaries for use with Visual Basic 4.x or Delphi 2.0)
(unsupported VB5 binary also available)
zlib Delphi 5 interface
(includes compiled object files and corresponding C++ Builder 5 project files)
zlib Perl interface (source code; look for Compress-Zlib*.tar.gz)
zlib Python interface (online manual; part of the standard library as of Python 1.5)
zlib Tcl interface mkZiplib
zlib Haskell interface
zlib Java interface (see also JAR format)
zlib reimplementation in pure Java
(not tested by us, but looks like a good alternative to java.util.zip)
Mark Nelson's JavaZip article (with source code) (December 1997)
Random access for gzip archives, for Java
Gilles Vollant's zlib-based mini-zip and mini-unzip
(see also Info-ZIP's UnZip, which optionally can be compiled with zlib)
Scott Ludwig's zlib-based CExe executable compressor for Win32
zlib technical issues, including spec errors
zlib information in Japanese
zlib information in Russian
Real World Scanning and Halftones (second edition includes a section on zlib)
Markus Oberhumer's LZO `real-time' data compression library
(not tested by us, but looks like a good alternative if you need more speed and less compression)
lz4, a very fast compression algorithm
(not tested by us, but looks like an even better alternative if you need more speed and less compression)
Zstandard, a better compression algorithm
(not tested by us, but appears to be a better alternative to zlib in both dimensions of compression and speed, as well as decompression speed)
libbzip2
(not tested by us, but looks like a good alternative if you need more compression and less speed)
PPP Deflate Protocol (RFC 1979)
Info-ZIP Home Page
Portable Network Graphics (PNG) Home Page
gzip Home Page
pigz (parallel gzip) Home Page
DataCompression.info
comp.compression Frequently Asked Questions list
Send comments or questions about zlib to the authors at after checking FAQ andmanual.
Please report broken links to(PGP key).

Hdf Zlib File Extension

This page last updated December 15th, 2017.

Hdf Zlib File

Web page copyright © 1996-2017 Greg Roelofs, Jean-loup Gailly and Mark Adler.
zlib software copyright © 1995-2017 Jean-loup Gailly and Mark Adler. 		zlib.org domain name donated by Andrew Green.