What would be involved in enabling 5.1-channel spdif output?
I'd imagine the first step would be to add an ac3 encoder, and then (possibly) the 2->5.1 channel demuxing for stereo streams. This would result in the ability to mix dolby digital streams (DVD's) with more mundane PCM streams, such as IM or telephony apps. I'm willing to tackle some moderate coding, but I haven't attacked alsa internals at all yet... where's the best docs for that?
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