Module compression 

Rate-coded compression helpers built on generic rate backends. Rate-coded compression helpers (AC/rANS) with optional framing.

The functions in this module implement lossless byte compression by combining:

• a predictive rate model (RateBackend) that emits per-symbol PDFs,
• an entropy coder (AC or rANS),
• optional framing metadata for robust decompression.

Enums

FramingMode

Wire format mode for rate-coded payloads.

Functions

compress_rate_bytes

Compress bytes using a predictive rate backend and entropy coder.

compress_rate_size

Return compressed size (in bytes) for data using rate coding.

compress_rate_size_chain

Return compressed size (in bytes) for concatenated slices under one stream.

decompress_rate_bytes

Decompress bytes produced by compress_rate_bytes.