I have a custom board that is similar to Odroid C2 i.e. it is powered by Amlogic S905 with a Mali 450 GPU.
Support from Amlogic is limited, so I cannot turn to the manufacturer.
I am running Arch linux (Kernel 3.14, I know it is old, I'm ok with it.) on it and it works quite well for all my needs. The only additional thing I want it to do is be able to play videos using GPU acceleration using any open source player like mplayer or newer alternatives.
I know GPU acceleration can work on this board because I have played with another download of Arch linux from a custom Rom developer who has installed Kodi on it that is successfully able to use GPU acceleration on it with Kodi.
I'm at a loss on how to install mplayer and get it to use GPU. Any assistance with directions on how to achieve this is appreciated.