Extend JamesDSP with convolution and spatial audio

frontend/jamesdsp-ir.test.js

@@ -0,0 +1,23 @@
+const { test } = require('node:test');
+const assert = require('node:assert/strict');
+
+test('generated room responses support four true-stereo paths and respect the low-memory cap', async () => {
+  const { generateIR, BUILTIN_IRS } = await import('./vendor/jamesdsp/ir-builtins.mjs');
+  const { resampleIR } = await import('./vendor/jamesdsp/ir-utils.mjs');
+  const ir = generateIR('Hall', 48000, 4, { maxFrames: 24000 });
+  assert.equal(ir.numberOfChannels, 4);
+  assert.equal(ir.length, 24000);
+  assert.equal(ir.truncated, true);
+  assert.ok(ir.getChannelData(0).some((sample, i) => sample !== ir.getChannelData(1)[i]), 'each matrix path has distinct taps');
+  const converted = resampleIR(ir, 32000);
+  assert.equal(converted.sampleRate, 32000);
+  assert.equal(converted.numberOfChannels, 4);
+  assert.equal(converted.length, 16000);
+  assert.deepEqual(Object.keys(BUILTIN_IRS), ['Small room', 'Hall', 'Plate', 'Cathedral']);
+});
+
+test('the IndexedDB store rejects impulse responses beyond its measured internal-frame cap', async () => {
+  const { saveIR } = await import('./vendor/jamesdsp/ir-store.mjs');
+  const oversized = { sampleRate: 48000, numberOfChannels: 4, length: 65537, getChannelData: () => new Float32Array(65537) };
+  await assert.rejects(saveIR('oversized', oversized), /65,536-frame internal limit/);
+});