Function sendInitCommand

client/src/decoder/decoderWorker.ts:55–73

(worker: Worker, audioContextSampleRate: number)

// Send init command to a worker, then send warmup BOS page
const sendInitCommand = (worker: Worker, audioContextSampleRate: number): void => {
  worker.postMessage({
    command: "init",
    bufferLength: 960 * audioContextSampleRate / 24000,
    decoderSampleRate: 24000,
    outputBufferSampleRate: audioContextSampleRate,
    resampleQuality: 0,
  });
  
  // After a short delay, send warmup BOS page to trigger decoder's internal init
  setTimeout(() => {
    const bosPage = createWarmupBosPage();
    console.log("Sending warmup BOS page to decoder");
    worker.postMessage({
      command: "decode",
      pages: bosPage,
    });
  }, 100);
};

// Singleton pre-warmed worker that starts loading WASM immediately
let prewarmedWorker: Worker | null = null;