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supports old documented way of loading wavetables:

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Jade (Rose) Rowland 2025-09-27 15:22:54 -04:00
parent a9957b45e5
commit 626a99ba5b
3 changed files with 40 additions and 42 deletions
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20
packages/superdough/wavetable.mjs
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@ -1,5 +1,5 @@
import { getAudioContext, registerSound } from './index.mjs';
import { getSoundIndex, valueToMidi } from './util.mjs';
import { getCommonSampleInfo, getSoundIndex, valueToMidi } from './util.mjs';
import {
destroyAudioWorkletNode,
getADSRValues,
@ -38,12 +38,12 @@ export const WarpMode = Object.freeze({
FLIP: 21,
});
async function loadWavetableFrames(url, label, frameLen = 256) {
async function loadWavetableFrames(url, label, frameLen = 2048) {
const ac = getAudioContext();
const buf = await loadBuffer(url, ac, label);
const ch0 = buf.getChannelData(0);
const total = ch0.length;
const numFrames = Math.floor(total / frameLen);
const numFrames = Math.max(1,Math.floor(total / frameLen));
const frames = new Array(numFrames);
for (let i = 0; i < numFrames; i++) {
const start = i * frameLen;
@ -86,14 +86,8 @@ function humanFileSize(bytes, si) {
return bytes.toFixed(1) + ' ' + units[u];
}
export function getTableInfo(hapValue, tableUrls) {
const { s, n = 0 } = hapValue;
let midi = valueToMidi(hapValue, 36);
let transpose = midi - 36; // C3 is middle C;
const index = getSoundIndex(n, tableUrls.length);
const tableUrl = tableUrls[index];
const label = `${s}:${index}`;
return { transpose, tableUrl, index, midi, label };
export function getTableInfo(hapValue, urls) {
return getCommonSampleInfo(hapValue,urls)
}
const loadBuffer = (url, ac, label) => {
@ -191,8 +185,8 @@ export async function onTriggerSynth(t, value, onended, bank, frameLen) {
wtWarpMode = WarpMode[wtWarpMode.toUpperCase()] ?? WarpMode.NONE;
}
const frequency = getFrequencyFromValue(value);
const { tableUrl, label } = getTableInfo(value, bank);
const payload = await loadWavetableFrames(tableUrl, label, frameLen);
const { url, label } = getTableInfo(value, bank);
const payload = await loadWavetableFrames(url, label, frameLen);
const holdEnd = t + duration;
const envEnd = holdEnd + release + 0.01;
const source = getWorklet(