displaying waveform and spectrogram

1 files changed, 61 insertions, 0 deletions

diff --git a/client/lib/sampler.js b/client/lib/sampler.js
new file mode 100644
index 0000000..481a940
--- /dev/null
+++ b/client/lib/sampler.js
@@ -0,0 +1,61 @@
+import Tone from 'tone'
+import { lerp, choice } from './util'
+
+const player_count = 2
+const filter_count = 3
+
+const crossfaders = []
+
+export default class Sampler {
+  constructor(path, count){
+    this.samples = (() => {
+      let s = '', a = []
+      for (let i = 1; i < count; i++) {
+        const s = i < 10 ? '0' + i : i;
+        a.push({ root: 100, fn: path.replace(/{}/, s) })
+      }
+      return a
+    })()
+
+    this.samples.forEach((sample) => {
+      sample.players = []
+      sample.index = -1
+      for (let i = 0; i < player_count; i++) {
+        let fn = sample.fn
+        if (window.location.href.match(/asdf.us/)) {
+          fn = 'http://asdf.us/glass/' + fn.replace('wav','mp3')
+        }
+        let player = new Tone.Player({
+          url: fn,
+          retrigger: true,
+          playbackRate: 1,
+        })
+        sample.players.push(player)
+      }
+    })
+  }
+  choice(){
+    return choice(this.samples)
+  }
+  play(freq, time, output) {
+    const best = this.choice()
+    best.index = (best.index + 1) % player_count
+
+    const player = best.players[ best.index ]
+
+    freq = freq || best.root
+    time = time || Tone.now()
+
+    player.playbackRate = freq / best.root
+    if (player.loaded) {
+      player.stop()
+      player.disconnect()
+      player.connect(output)
+      player.start(time)
+    } else {
+      console.log('loading')
+    }
+
+    return player
+  }
+}