How do I correctly convert YUV colours to RGB in Android?

问题

I am using MediaCodec to retrieve frames from a video on the SD card.

I am using ScriptIntrinsicYuvToRGB to convert the outputted frames of the MediaCodec to RGB. Then I am displaying them in a TextureView.
The problem is, the RGB colours are wrong (e.g. The grass is meant to be green. NOT purplish-grey)
Anybody know how to fix this please?
Thanks

来源：https://stackoverflow.com/questions/29953508/how-do-i-correctly-convert-yuv-colours-to-rgb-in-android