rgb转nv12 nv12转rgb
详见:https://www.jianshu.com/p/da2a682ae964 转换公式:* RGB转YUV:Y = 0.299 R + 0.587 G + 0.114 BU = - 0.1687 R - 0.3313 G + 0.5 B + 128V = 0.5 R - 0.4187 G - 0.0813 B + 128YUV转RGBR = Y + 1.402...