HD network media player with 100% open source buildable firmware

I am looking to develop an application for HD media player, and looking to开发者_运维知识库 purchase one which has 100% open source buildable firmware I can modify. I looked around and all of media players I could find, that advertise they are open source, only have kernel open. Main application usually is proprietary, so they only supply sources of linux kernel and GPL utilities.

What I am looking is the player for which I can actually build complete firmware myself. Any ideas?

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Look at DreamBox, it is Linux based, have network, etc.

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Maybe you can try EHP-608. It's based on sigma design 8635c. It's a network media player.