resid-rs
Overview
Port of reSID, a MOS6581 SID emulator engine, to Rust.
Story
This project originated from zinc64, a Commodore 64 emulator, around Jan 2017. It evolved to the point where it can be useful to others working on C64 sound/emulation so it is packaged and shipped as a standalone crate.
Usage
Once SID register read/writes are wired up to resid, all that is left to do is to generate audio samples and push them to audio output buffer.
while delta > 0 {
let (samples, next_delta) = self.resid.sample(delta, &mut buffer[..], 1);
let mut output = self.sound_buffer.lock().unwrap();
for i in 0..samples {
output.write(buffer[i]);
}
delta = next_delta;
}
Components
| Component | Status |
|---|---|
| Envelope | Done |
| ExternalFilter | Done |
| Filter | Done |
| Sampler | Done |
| Spline | Done |
| Wave | Done |
| Sid | Done |
Changelog
- 0.3 - compliance with the original resid
- 0.4 - full sampler support
- 0.5 - closed performance gap largely due to resampling
- 0.6 - SIMD optimization
- 0.7 - continuous integration and GPLv3
- 0.8 - documentation and api refinements/internal cleanup
- 0.9 - migration to Rust 2018
- 1.0 - no_std support
- 1.1 - more idiomatic implementation, removes interior mutability and improves support for async rust
Credits
- Thanks to Dag Lem for his reSID implementation
- Thanks to Daniel Collin for motivating me to put this out and helping out with code optimization
- Commodore folks for building an iconic 8-bit machine
- Rust developers for providing an incredible language to develop in