I can't quite understand what this syntax is:

private val surfaceTextureListener = object : TextureView.SurfaceTextureListener {

        override fun onSurfaceTextureAvailable(texture: SurfaceTexture, width: Int, height: Int) {
        //...
    }

It’s creation of object

Aw man, I never got that far with Java. Only basic classes.

Java analogue would be:

new TextureView.SurfaceTextureListener {
   @Override
   void  onSurfaceTextureAvailable(…)
}

Can you link me to relevant kotlin docs that might give me more insight

Wonderful thank you for your help sir