Module lz_fear::raw

The raw LZ4 compression format.

Using this directly saves you the overhead of framing (~11 bytes) but you lose several features, most notably the fallback mechanism for incompressible data: if the compressed version of a framed block would be larger, it encodes the uncompressed version instead. This guarantees that the compression ratio of a frame will never be negative (aside from the header).

The break-even point where framing is always smaller is around 2.5KB for totally incompressible data. Conversely, for payloads below 2.5KB framing always adds a bit of overhead (but does get you lots of nice features).

Structs

• U16Table
• U32Table

Enums

• DecodeError
  Errors when decoding a raw LZ4 block.

Traits

• EncoderTable

Functions

• compress2
• decompress_raw
  Decompress an LZ4-compressed block.