audio/fn/write.js

Audio loading, editing, and rendering for JavaScript

import { opRange } from '../plan.js'

const write = (chs, ctx) => {
  let data = ctx.args[0]
  let [p, end] = opRange(ctx, chs[0].length)
  let srcOff = Math.max(0, -p), dstOff = Math.max(0, p)
  for (let c = 0; c < chs.length; c++) {
    let s = Array.isArray(data) ? (data[c] || data[0]) : data
    for (let i = srcOff; i < s.length && dstOff + i - srcOff < end; i++) chs[c][dstOff + i - srcOff] = s[i]
  }
  return chs
}

import audio from '../core.js'
audio.op('write', { process: write })