Ogg
Pure-Rust decoder and encoder for the Ogg container format, implementing the xiph.org Ogg framing spec.
Repository Health
Technical Analysis
Ogg is a pure-Rust implementation of the xiph.org Ogg container (transport) format, providing both a decoder and an encoder for Ogg bitstreams. It handles the framing layer, reading and writing packets, and their organization into pages and logical streams, leaving codec-specific decoding (such as Vorbis) to companion crates like lewton. An optional async feature integrates with async I/O.
What You Get
- A PacketReader that extracts packets from an Ogg transport stream
- A PacketWriter for encoding packets into valid Ogg pages
- A pure-Rust implementation with no C dependencies
- An optional async feature for use with async I/O runtimes
Common Use Cases
- Demuxing Ogg-encapsulated audio before handing packets to a codec decoder
- Muxing encoded packets into a valid .ogg container
- Building audio tooling in Rust without linking native Ogg libraries
Under The Hood
Architecture
The crate exposes two primary types: PacketReader, which consumes bytes from any Read source and yields Packets reassembled from Ogg pages, and PacketWriter, which serializes packets into correctly framed Ogg pages over a Write sink. Page CRC validation, segmentation, and stream serial handling implement the xiph framing rules directly in Rust.
Tech Stack
A single pure-Rust crate with no native dependencies; minimum supported Rust is 1.61 when the async feature is off. The optional async feature integrates with async I/O traits. Published on crates.io as ogg, licensed under the three-clause BSD license.
Code Quality
The repository includes a tests/ directory and inline src/test.rs, with the decoder noted as the better-tested half (the encoder was written primarily to support decoder testing). The API surface is small and the code has been stable across many releases, though development activity is low.
API Design
The reader/writer pair is straightforward to use for anyone familiar with Rust’s Read and Write traits, and the codec-agnostic scope keeps the surface minimal. The main learning cost is understanding that this crate only handles the container and must be paired with a codec decoder.
