waveform-playlist/examples/dawcore-native/effects.html at main · naomiaro/waveform-playlist · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>dawcore — effects chain demo</title>
  <style>
    body {
      font-family: system-ui, sans-serif;
      background: #0f0f1a;
      color: #e0d4c8;
      padding: 24px;
    }
    h1 {
      font-size: 1.2rem;
      margin-bottom: 16px;
    }
    h2 {
      font-size: 0.95rem;
      color: #888;
      margin: 0 0 10px 0;
      font-weight: normal;
      letter-spacing: 0.05em;
      text-transform: uppercase;
    }
    daw-editor {
      --daw-wave-color: #c49a6c;
      --daw-playhead-color: #d08070;
      --daw-background: #1a1a2e;
      --daw-track-background: #16213e;
      --daw-ruler-color: #c49a6c;
      --daw-ruler-background: #0f0f1a;
      margin-bottom: 12px;
    }
    daw-transport {
      display: flex;
      gap: 8px;
      margin-bottom: 20px;
    }
    .section {
      margin-bottom: 20px;
    }
    .controls {
      display: flex;
      gap: 8px;
      margin-bottom: 10px;
      align-items: center;
    }
    button {
      cursor: pointer;
      background: #1a1a2e;
      color: #e0d4c8;
      border: 1px solid currentColor;
      padding: 6px 14px;
      font: inherit;
      font-size: 0.85rem;
    }
    button:hover { opacity: 0.8; }
    button:disabled { opacity: 0.4; cursor: default; }
    .rack {
      display: flex;
      flex-direction: column;
      gap: 8px;
      max-width: 560px;
    }
    .rack:empty::after {
      content: 'no effects — dry signal';
      font-family: 'Courier New', monospace;
      font-size: 0.75rem;
      color: #555;
    }
    .effect {
      background: #1a1a2e;
      border-left: 3px solid #63C75F;
      padding: 8px 12px;
    }
    .effect.bypassed {
      border-left-color: #555;
      opacity: 0.6;
    }
    .effect-header {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 6px;
    }
    .effect-header .name {
      font-family: 'Courier New', monospace;
      font-size: 0.85rem;
      color: #c49a6c;
      flex: 1;
    }
    .effect-header button {
      font-size: 0.75rem;
      padding: 3px 10px;
    }
    .effect-header button.active {
      background: #63C75F;
      color: #0f0f1a;
      border-color: #63C75F;
    }
    .param {
      display: grid;
      grid-template-columns: 90px 1fr 90px;
      gap: 8px;
      align-items: center;
      font-size: 0.78rem;
      margin-bottom: 2px;
    }
    .param .value {
      font-family: 'Courier New', monospace;
      color: #888;
      text-align: right;
    }
    input[type="range"] {
      accent-color: #63C75F;
      width: 100%;
    }
    #log {
      margin-top: 12px;
      font-family: monospace;
      font-size: 0.75rem;
      color: #888;
      max-height: 140px;
      overflow-y: auto;
    }
  </style>
</head>
<body>
  <h1>dawcore — effects chain demo</h1>

  <script type="module">import '@dawcore/components';</script>

  <daw-editor id="editor" samples-per-pixel="1024" wave-height="80" timescale>
    <daw-track src="/media/audio/AlbertKader_Whiptails/03_Kick.opus" name="Kick"></daw-track>
    <daw-track src="/media/audio/AlbertKader_Whiptails/07_Bass1.opus" name="Bass"></daw-track>
    <daw-track id="synth-track" src="/media/audio/AlbertKader_Whiptails/09_Synth1.opus" name="Synth"></daw-track>
  </daw-editor>

  <daw-transport for="editor">
    <daw-play-button></daw-play-button>
    <daw-pause-button></daw-pause-button>
    <daw-stop-button></daw-stop-button>
  </daw-transport>

  <div class="section">
    <h2>Synth track effects</h2>
    <div class="controls">
      <button id="add-filter" disabled>+ Lowpass Filter</button>
      <button id="add-delay" disabled>+ Delay</button>
    </div>
    <div class="rack" id="track-rack"></div>
  </div>

  <div class="section">
    <h2>Master effects</h2>
    <div class="controls">
      <button id="add-compressor">+ Compressor</button>
    </div>
    <div class="rack" id="master-rack"></div>
  </div>

  <div id="log"></div>

  <script type="module">
    import { getEffectDefinitions } from '@dawcore/components';
    import { NativePlayoutAdapter } from '@dawcore/transport';

    const editor = document.getElementById('editor');
    const audioCtx = new AudioContext({ sampleRate: 48000, latencyHint: 0 });
    const adapter = new NativePlayoutAdapter(audioCtx);
    editor.adapter = adapter;

    const synthTrack = document.getElementById('synth-track');
    const trackRack = document.getElementById('track-rack');
    const masterRack = document.getElementById('master-rack');
    const definitions = getEffectDefinitions();

    const log = document.getElementById('log');
    function addLog(msg) {
      const line = document.createElement('div');
      line.textContent = msg;
      log.prepend(line);
      while (log.children.length > 20) log.lastChild.remove();
    }

    // --- Rack rendering ---
    // `target` is anything with the effects API: <daw-track> (per-track chain)
    // or <daw-editor> (master chain). Rebuilt from `target.effects` state.
    function renderRack(target, rack) {
      rack.textContent = '';
      for (const effect of target.effects) {
        const definition = definitions.get(effect.type);
        const row = document.createElement('div');
        row.className = 'effect' + (effect.bypassed ? ' bypassed' : '');

        const header = document.createElement('div');
        header.className = 'effect-header';

        const name = document.createElement('span');
        name.className = 'name';
        name.textContent = definition ? definition.label : effect.type;
        header.appendChild(name);

        const bypassBtn = document.createElement('button');
        bypassBtn.textContent = 'Bypass';
        bypassBtn.classList.toggle('active', effect.bypassed);
        bypassBtn.addEventListener('click', () => {
          target.setEffectBypassed(effect.id, !effect.bypassed);
          renderRack(target, rack);
        });
        header.appendChild(bypassBtn);

        const removeBtn = document.createElement('button');
        removeBtn.textContent = 'Remove';
        removeBtn.addEventListener('click', () => {
          target.removeEffect(effect.id);
          renderRack(target, rack);
        });
        header.appendChild(removeBtn);

        row.appendChild(header);

        for (const [paramName, def] of Object.entries(definition ? definition.params : {})) {
          const param = document.createElement('div');
          param.className = 'param';

          const label = document.createElement('span');
          label.textContent = paramName;
          param.appendChild(label);

          const slider = document.createElement('input');
          slider.type = 'range';
          slider.min = def.min;
          slider.max = def.max;
          slider.step = def.step;
          slider.value = effect.params[paramName];

          const value = document.createElement('span');
          value.className = 'value';
          const unit = def.unit ? ' ' + def.unit : '';
          value.textContent = slider.value + unit;

          slider.addEventListener('input', () => {
            target.setEffectParams(effect.id, { [paramName]: Number(slider.value) });
            value.textContent = slider.value + unit;
          });

          param.appendChild(slider);
          param.appendChild(value);
          row.appendChild(param);
        }

        rack.appendChild(row);
      }
    }

    // --- Add buttons ---
    document.getElementById('add-filter').addEventListener('click', () => {
      synthTrack.addEffect('native-filter', { frequency: 800 });
      renderRack(synthTrack, trackRack);
    });
    document.getElementById('add-delay').addEventListener('click', () => {
      synthTrack.addEffect('native-delay');
      renderRack(synthTrack, trackRack);
    });
    document.getElementById('add-compressor').addEventListener('click', () => {
      editor.addEffect('native-compressor', { threshold: -36 });
      renderRack(editor, masterRack);
    });

    // Per-track chains wire into the transport's track nodes — enable the
    // track buttons once the synth track's audio is loaded.
    editor.addEventListener('daw-track-ready', (e) => {
      addLog('track-ready: ' + e.detail.trackId);
      if (e.detail.trackId === synthTrack.trackId) {
        document.getElementById('add-filter').disabled = false;
        document.getElementById('add-delay').disabled = false;
      }
    });

    // --- daw-effect-* events (track events bubble up to the editor) ---
    editor.addEventListener('daw-effect-add', (e) =>
      addLog('effect-add: ' + e.detail.type + ' (' + e.detail.effectId + ') at index ' + e.detail.index));
    editor.addEventListener('daw-effect-remove', (e) =>
      addLog('effect-remove: ' + e.detail.effectId));
    editor.addEventListener('daw-effect-change', (e) =>
      addLog('effect-change: ' + e.detail.effectId + ' ' + JSON.stringify(e.detail.params)));
    editor.addEventListener('daw-effect-bypass', (e) =>
      addLog('effect-bypass: ' + e.detail.effectId + ' bypassed=' + e.detail.bypassed));
    editor.addEventListener('daw-effect-reorder', (e) =>
      addLog('effect-reorder: ' + e.detail.effectId + ' ' + e.detail.fromIndex + ' -> ' + e.detail.toIndex));
  </script>
</body>
</html>