On Mon, 2006-10-30 at 17:35 +0100, Alfons Adriaensen wrote: > On Mon, Oct 30, 2006 at 10:07:06AM -0500, Lee Revell wrote: > > > > Some ALSA plugin? Of course, doing it in JACK's ALSA backend is also > > > reasonably simple, but would require small changes in many places to > > > override samplerates, etc. > > > > I don't think it even needs to be a plugin, just tell ALSA about the > > audio format. > > How can you tell ALSA that an SPDIF input is 4 channels ? >
The ALSA code would have to be extended... I'm not sure exactly where. I don't think it should be called SPDIF because SPDIF implies two channels. > > Where can the detailed specs be downloaded? > > According to the Core Sound website this thing is still in development, > and the specs there are incomplete. > > What they want to do is trick hardware 2-ch recorders into accepting > the 4-ch signal. So what is in reality 4 channels at 48 kHz will be > presented as 2 channels at 96 kHz. > I don't think it's useful to discuss further until technical details are available. When specs are available, this thread should probably be re-started on alsa-devel. Lee
