ColorspaceConverter 可用于快速转换I420, YV12, UYVY, YUY2, YVYU, RGB 等多种colorspace 格式， 用于多媒体图像的输入和输出处理。-ColorspaceConverter can be used for the rapid conversion I420, YV12, UYVY, YUY2, YVYU, RGB and other colorspace format for multimedia image processing of