LZ4

class numcodecs.lz4.LZ4

Codec providing compression using LZ4.

Parameters:

acceleration : int

Acceleration level. The larger the acceleration value, the faster the algorithm, but also the lesser the compression.

See also

numcodecs.zstd.Zstd, numcodecs.blosc.Blosc

codec_id = 'lz4'

numcodecs.lz4.compress(source, int acceleration=DEFAULT_ACCELERATION)

Compress data.

Parameters:

source : bytes-like

Data to be compressed. Can be any object supporting the buffer protocol.

acceleration : int

Acceleration level. The larger the acceleration value, the faster the algorithm, but also the lesser the compression.

Returns:

dest : bytes

Compressed data.

Notes

The compressed output includes a 4-byte header storing the original size of the decompressed data as a little-endian 32-bit integer.

numcodecs.lz4.decompress(source, dest=None)

Decompress data.

Parameters:

source : bytes-like

Compressed data. Can be any object supporting the buffer protocol.

dest : array-like, optional

Object to decompress into.

Returns:

dest : bytes

Object containing decompressed data.