aether-ndk — Node Development Kit v0.1

Build custom DSP nodes for AetherDSP in minutes.

use aether_ndk::prelude::*;

#[aether_node]
pub struct Tremolo {
    #[param(name = "Rate",  min = 0.1, max = 20.0, default = 4.0)]
    rate: f32,
    #[param(name = "Depth", min = 0.0, max = 1.0,  default = 0.5)]
    depth: f32,
    phase: f32,  // internal state — no #[param]
}

impl DspProcess for Tremolo {
    fn process(&mut self, inputs: &NodeInputs, output: &mut NodeOutput,
               params: &mut ParamBlock, sample_rate: f32) {
        let input = inputs.get(0);
        for (i, out) in output.iter_mut().enumerate() {
            let lfo = 1.0 - params.get(1).current * 0.5
                * (1.0 - (self.phase * std::f32::consts::TAU).cos());
            *out = input[i] * lfo;
            self.phase = (self.phase + params.get(0).current / sample_rate).fract();
            params.tick_all();
        }
    }
}

What #[aether_node] generates

• Default impl using #[param(default = ...)] values
• AetherNodeMeta trait with type_name() and param_defs()
• Static PARAM_COUNT constant
• Strips #[param] attributes from the output struct

RT Safety

Your process impl must be:

• No allocation — no Box, Vec, String
• No locks — no Mutex, RwLock
• No I/O — no println!, file access
• Bounded — no unbounded loops or recursion

Examples

cargo run --example tremolo       -p aether-ndk

cargo run --example bitcrusher    -p aether-ndk

cargo run --example registry_demo -p aether-ndk

Docs

• NDK Guide
• Manifest Spec
• CLI Reference