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Streaming Compression Library : Compress, decompress, streaming data, memory buffers, streaming single files, CRC checksums, Adler-32 checksums


Compress and decompress memory buffers, streaming data, or single files using GZip or BZip2.
Current version: 1.1
Platform: ActiveX / COM
Price: $1,199.95 USD for a 1-year subscription
          as part of Xceed Data Manipulation Suite
          Perpetual, royalty-free license
          45-day trial, 60-day satisfaction guarantee

 Streaming Compression Library Updates : CRC checksums, Adler-32 checksums, memory buffers, streaming single files
ActiveX technology
  • A single fully self-contained COM object and ActiveX control written with ATL 3.0.
  • Requires no external compression DLLs, MFC DLLs, or runtime libraries.
  • Both single-threaded (STA) and multi-threaded apartment (MTA) model design.
  • Instantiate the component dynamically without putting it on a form.
  • Supports multiple instances running simultaneously.
  • When running on Windows NT, 2000, or XP, the library automatically switches to native Unicode API calls for best performance.
  • ActiveX control interface has all constants, enumerations, and types built-in. Code completion, property categories, help strings, and context-sensitive F1 help fully supported.
  • Works with all 32-bit development environments that can use ActiveX controls, including VB, VC++, Delphi, C++ Builder, VFP, Office, Web scripting languages, ASP, and DCOM projects.
Compression and decompression engine
  • Fast, low memory usage compression engine.
  • Offers the "Deflate" compression method for good, speedy compression, and the "BZip2" method for maximum achieved compression.
  • Control the compression level for each compression method.
  • BZip2 compression method is excellent for compressing XML data
  • Can compress and decompress GZip (.gz) and BZip2 (.bz2) files from Unix and Linux platforms.
  • Can compress and decompress Zlib, Info-Zip, and Java-compatible data.
  • Can compress and decompress memory buffers produced by Xceed Zip v3.x and Xceed Zip v4.x.
  • Can output compressed data with embedded CRC or Adler-32 checksums to ensure data integrity.
Major operations
  • Compress and uncompress directly from one memory buffer to another.
  • Compress and uncompress from file to memory or from memory to file.
  • Compress and uncompress from one file to another.
  • All compression and decompression modes support streaming data.
  • Calculate CRC or Adler-32 checksums on raw data.
  • Can efficiently and automatically work together with the Xceed Encryption Library and the Xceed Binary Encoding Library to encrypt/decrypt/ encode/decode data before compressing or decompressing it.
Documentation and samples
  • Complete, comprehensive documentation provided in an MSDN-style HTML format which is fully context-sensitive so that pressing F1 on a keyword in your IDE opens up the manual to the correct relevant topic.
  • Fully commented sample applications for various languages, including VB, Delphi, Visual C++ with ATL and MFC, C++ Builder, and Active Server Pages.