Deflate Compression and Decompression#
The Intel® Query Processing Library (Intel® QPL) supports DEFLATE (Deflate) lossless data compression file format as specified in RFC 1951.
Attention
In Intel QPL, compression is always done using a history buffer size of 4 KB.
Decompression is supported for Deflate streams where the size of the
history buffer is no more than 4 KB, otherwise QPL_STS_BAD_DIST_ERR code is
returned.
For more details on various supported Deflate flavors, refer to the Deflate Compression section. For instructions on how the Deflate stream could be decompressed, use Deflate Decompression.
Additionally Intel QPL supports compressing with a Dictionary, using Deflate with Indexing, and dividing compression and decompression into multiple jobs.
Intel QPL Deflate could be made compatible with ZLIB Format (as specified in RFC 1950) or GZIP (as specified in RFC 1952). See the Support of ZLIB and GZIP Formats section for more details.