Method setPCMCallback

app/src/utils/tauriStreamCapture.ts:420–427

* Set PCM callback for unified transcription pipeline. * When set, decoded PCM samples (Float32Array @ 16kHz) are passed to this callback * instead of just being used for playback. * * @param callback - Function to receive PCM samples, or null to disable

(callback: PCMCallback | null)

   * @param callback - Function to receive PCM samples, or null to disable
   */
  setPCMCallback(callback: PCMCallback | null): void {
    this.pcmCallback = callback;
    if (callback) {
      Logger.info("TauriCapture", "PCM callback set for unified transcription pipeline");
    } else {
      Logger.info("TauriCapture", "PCM callback cleared");
    }
  }

  /**
   * Get the latest base64 frame directly (for pre-processor).