How to access(zero copy) AHardWareBuffer and ANativeWindow_Buffer, with Mali OpenCL?

How to access(zero copy) android AHardWareBuffer and ANativeWindow_Buffer, with mali opencl?

please note, ANativeWindow_Buffer is not ANativeWindowBuffer. 

AHardWareBuffer 

https://developer.android.google.cn/ndk/reference/group/a-hardware-buffer

 ANativeWindow_Buffer:

https://developer.android.google.cn/ndk/reference/group/a-native-window#group___a_native_window_1gad0983ca473ce36293baf5e51a14c3357

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