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import Tone from 'tone'
import draw from './draw'
import keys from './lib/keys'
import mouse from './lib/mouse'
import output from './lib/output'
import spectrum from './lib/spectrum'
import {
requestAudioContext,
lerp, clamp, mod,
} from './lib/util'
let selfDrag = false
let buffer
let players = []
let gallery
let sr = 44100
let last_i = 0
let _r = 8, _i = 8
function init(){
requestAudioContext(ready)
document.body.addEventListener('dragover', dragover)
document.body.addEventListener('dragstart', dragstart)
document.body.addEventListener('drop', drop)
document.querySelector("#upload").addEventListener('change', handleFileSelect)
// draw.onFrame(() => {})
draw.resize(256, 256)
gallery = document.querySelector('#gallery')
mouse.register({
move: (x, y) => {
}
})
keys.listen((z) => {
// console.log(z)
play(mod(z, players.length))
})
}
function ready(){
}
function dragover (e) {
e.preventDefault()
}
function dragstart (e) {
selfDrag = true
}
function drop (e) {
e.stopPropagation()
e.preventDefault()
if (e.dataTransfer && ! selfDrag) {
if (e.dataTransfer.files.length) {
handleFileSelect(e)
}
}
else {
handleFileSelect(e)
}
selfDrag = false
}
function handleFileSelect(e){
var files = e.dataTransfer ? e.dataTransfer.files : e.target.files
var file = files[0]
// console.log(files, file)
if (! file) return
load(file)
}
function load(file){
players = []
buffer = new Tone.Buffer(URL.createObjectURL(file), loadBuffer, (err) => console.error('err', err))
}
function loadBuffer(){
console.log('loaded buffer', buffer)
const pcm = buffer._buffer.getChannelData(0)
sr = buffer._buffer.sampleRate
if (! pcm) return
const FRAME_LENGTH = 126 * 255
const FRAME_OFFSET = FRAME_LENGTH
for (var offset = 0, count = 0, _len = pcm.length; offset < _len; offset += FRAME_OFFSET, count += 1) {
// console.log('generating', count, offset)
let player = render(pcm.slice(offset, offset+FRAME_LENGTH))
register(player, count)
if (count > 20) break
// break
}
play(0)
}
function render(pcm){
const fft = spectrum.toSpectrum(pcm, sr)
// console.log('render', fft)
// const pcm_rev = pcm.slice().reverse()
// const spec_rev = spectrum.toSpectrum(pcm_rev, spec.sr)
// const { buf, pcm } = spectrum.fromSpectrum(fft)
draw.clear()
const { canvas, imageData } = draw.raw_spectrum(fft, 0, 256, 0, 256, _r, _i)
const dataURL = canvas.toDataURL("image/png")
return { fft, canvas, imageData, dataURL }
}
function play(i) {
// console.log('play', i)
last_i = i
let player = players[clamp(i, 0, players.length)]
// const { canvas, imageData } = draw.raw_spectrum(fft, 0, 256, 0, 256, 1, 1)
// console.log(_r, _i)
const { canvas, imageData } = draw.raw_spectrum(player.fft, 0, 256, 0, 256, _r, _i)
const new_fft = spectrum.fromImageData(player.imageData, 44100, _r, _i)
gallery.innerHTML = ''
gallery.appendChild(canvas)
// console.log(player.fft.data, new_fft.data)
const buf = spectrum.fromSpectrum(new_fft)
const _p = new Tone.Player(buf)
_p.connect(output)
_p.start(Tone.now())
redraw(new_fft)
}
function redraw(new_fft){
const { canvas, imageData } = draw.raw_spectrum(new_fft, 0, 256, 0, 256, _r, _i)
gallery.appendChild(canvas)
}
function register(player, i){
// console.log('register', player)
players.push(player)
player.canvas.addEventListener('click', () => {
play(i)
})
// gallery.appendChild(player.canvas)
}
init()
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