public uint[,] OnPreProcessPixels(uint[,] pixels) { if (m_PreProcessFrames && pixels != null) { if (m_Filter == TangraConfig.PreProcessingFilter.LowPassFilter) { pixels = BitmapFilter.LowPassFilter(pixels, m_Bpp); } else if (m_Filter == TangraConfig.PreProcessingFilter.LowPassDifferenceFilter) { pixels = BitmapFilter.LowPassDifferenceFilter(pixels, m_Bpp, false); } } return(pixels); }