Matt Spencer
496b6bdc71
Key components: - no_std core so it can be used bare metal on embedded systems - default implementation for RPi 2350, with midi input and I2s output using PIO - Visualiser for the web to play with on a dev system
73 lines
2.5 KiB
JavaScript
73 lines
2.5 KiB
JavaScript
/**
|
|
* bootstrap.js — ES module entry point.
|
|
*
|
|
* Imports the wasm-pack-generated glue, initialises the WASM binary, then
|
|
* wires up Rust-exported types to the canvas elements in index.html.
|
|
*/
|
|
|
|
import init, {
|
|
AudioEngine,
|
|
OscilloscopeView,
|
|
SpectrumView,
|
|
PatchBay,
|
|
SynthParams,
|
|
} from "./pkg/synth_visualiser.js";
|
|
|
|
const loader = document.getElementById("loader");
|
|
const status = document.getElementById("status");
|
|
const srLabel = document.getElementById("sample-rate");
|
|
const frameTime = document.getElementById("frame-time");
|
|
|
|
async function bootstrap() {
|
|
try {
|
|
await init();
|
|
|
|
const engine = new AudioEngine();
|
|
await engine.attach();
|
|
|
|
const analyser = engine.analyser_node();
|
|
const oscilloscope = new OscilloscopeView("oscilloscope-canvas", analyser);
|
|
const spectrum = new SpectrumView("spectrum-canvas", analyser);
|
|
const patchbay = new PatchBay("patchbay-canvas");
|
|
|
|
// Register module jacks (x, y coordinates relative to the canvas)
|
|
patchbay.register_jack("vco", "out", 50, 60, true);
|
|
patchbay.register_jack("filter", "in", 150, 60, false);
|
|
patchbay.register_jack("filter", "out", 250, 60, true);
|
|
patchbay.register_jack("vca", "in", 350, 60, false);
|
|
patchbay.register_jack("lfo", "cv-out", 450, 60, true);
|
|
patchbay.register_jack("filter", "cv-in", 550, 60, false);
|
|
|
|
const pbCanvas = document.getElementById("patchbay-canvas");
|
|
pbCanvas.addEventListener("pointerdown", e => patchbay.on_pointer_down(e.offsetX, e.offsetY));
|
|
pbCanvas.addEventListener("pointermove", e => patchbay.on_pointer_move(e.offsetX, e.offsetY));
|
|
pbCanvas.addEventListener("pointerup", e => patchbay.on_pointer_up(e.offsetX, e.offsetY));
|
|
|
|
const params = new SynthParams();
|
|
engine.set_params(params.to_json());
|
|
|
|
srLabel.textContent = `SR: ${engine.sample_rate()} Hz`;
|
|
status.textContent = "Running";
|
|
engine.start();
|
|
|
|
let last = performance.now();
|
|
function frame(now) {
|
|
oscilloscope.draw();
|
|
spectrum.draw();
|
|
patchbay.draw();
|
|
frameTime.textContent = `frame: ${(now - last).toFixed(1)} ms`;
|
|
last = now;
|
|
requestAnimationFrame(frame);
|
|
}
|
|
requestAnimationFrame(frame);
|
|
|
|
loader.classList.add("hidden");
|
|
|
|
} catch (err) {
|
|
console.error("[bootstrap] Fatal:", err);
|
|
loader.textContent = `Error: ${err.message ?? err}`;
|
|
}
|
|
}
|
|
|
|
bootstrap();
|