Function driveTransportUi

static/js/player.js:1075–1081

(t)

      // Mirror the streaming "timeupdate" handler body so playhead/footer/
      // presence/stop-visual update the same way regardless of which clock runs.
      const driveTransportUi = (t) => {
        timeEl.textContent = `${fmtTime(t)} / ${fmtTime(totalDuration)}`;
        updatePlayheadMarker(t);
        updateFooterTimes(t);
        updatePresencePlayhead(t);
        updateStopVisual();
      };
      if (audioEngine) { audioEngine.destroy(); setAudioEngine(null); }
      const eng = createAudioEngine(stems, {
        onTime: driveTransportUi,