ggwave-spm

Why it's ranked here

A practical choice when an Apple project needs the underlying codec packaged with minimal ceremony. The package builds the native implementation directly, exposes both encoding and decoding, and verifies round trips from Swift and Objective-C. Documentation remains notably sparse.

What's good

The package contains the signal-processing implementation, including Fourier transforms, resampling, and Reed-Solomon error correction. Callers can select protocols, adjust starting frequencies, choose sample formats, and query output size before allocating a waveform buffer.

Tradeoffs

The public surface is a low-level C interface with explicit instance management and caller-owned buffers. The supplied documentation covers installation and build commands but does not explain audio capture, playback, threading, buffer sizing, or production integration.

How to use it well

Use it when a Swift or Objective-C application already controls its audio input and output pipeline and needs payload-to-waveform conversion. Start from the round-trip examples and wrap the C interface locally. It does not provide microphone capture, speaker playback, or application-level messaging.

Observed

Packaging

Swift Package Manager library product named ggwave, using Swift tools 5.3 and C++11.

Interface

Native library with a C ABI imported by both Swift and Objective-C examples.

Primary implementation

C++ signal-processing core, with Swift package metadata and Swift and Objective-C test clients.

Verification

Two executable test targets encode and decode a four-byte payload; CI runs both on macOS.

Install surface

README instructs users to add the repository URL as an Xcode Swift Package dependency.

License

The bundled Reed-Solomon component carries an MIT license; no repository-wide license is shown in the supplied tree.