Is it possible to get raw IR image data from Superframe?

I am using java API with a Tango Peanut phone and I wanted to know if there is a way to get a raw IR image from an RGB-IR camera that the depth sensor is using. I know that a quarter of the pixels from an RGB IR camera are IR data. I also know that all 4MP RGB-IR images are captured in a superframe and then converted to YUV. However, it was unclear how to decode the IR channel, or if it is possible even at this stage. If it is lost inside the YUV superframe, is there any other way to get the original IR image?