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redsea is an FM-RDS decoder for Linux / macOS that outputs line-delimited JSON.

RDS is the magic in your car radio that enables it to display the station name and the song playing.

The idea of redsea is to be something of a logger of a converter, dealing with the problem: how to take data of real-time nature and meaningfully print it as self-sufficient log-type entries?

This wiki contains information that goes past the readme, namely:

• Installation
• Command line options
• Input formats
• Supported RDS features
• Use cases

And some discussion on Redsea internals:

• Benchmark results
• JSON object order
• RDS clock recovery from pilot tone?
• Rx timestamps
• Some RadioText research
• Error detection and correction