Function handleWorkerFrameUpdate

src/platforms/wasm/compiler/index.ts:1269–1294

* Handles frame update from worker - draws to mirror canvas * @param {Object} payload - Frame data with ImageBitmap

(payload)

 * @param {Object} payload - Frame data with ImageBitmap
 */
function handleWorkerFrameUpdate(payload) {
  const { bitmap, width, height } = payload;

  try {
    // Create mirror canvas if needed or resize if dimensions changed
    if (!mirrorCanvas || mirrorCanvas.width !== width || mirrorCanvas.height !== height) {
      console.log('Creating/resizing mirror canvas:', width, 'x', height);

      if (mirrorCanvas) {
        document.body.removeChild(mirrorCanvas);
      }

      mirrorCanvas = createMirrorCanvas(width, height);
      mirrorCanvasContext = mirrorCanvas.getContext('2d', { willReadFrequently: false });
    }

    // Draw bitmap to mirror canvas (hardware-accelerated)
    if (mirrorCanvasContext) {
      mirrorCanvasContext.drawImage(bitmap, 0, 0);
    }

    // Bitmap is transferred, no need to close it
  } catch (error) {
    console.error('Error drawing frame to mirror canvas:', error);
  }
}

/**
 * Initializes main-thread video recording with worker frame transfer