code: func resizeYCbCr(m *image.YCbCr, r image.Rectangle, w, h int) (image.Image, bool) {
  	dst := image.NewRGBA(image.Rect(0, 0, w, h))
  	xdraw.ApproxBiLinear.Scale(dst, dst.Bounds(), m, m.Bounds(), xdraw.Src, nil)
  	return dst, true
  }
docs: // resizeYCbCr returns a scaled copy of the YCbCr image slice r of m.
  // The returned image has width w and height h.