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Re: clarification on RME suggestions ...
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Re: clarification on RME suggestions ...


  • Subject: Re: clarification on RME suggestions ...
  • From: Bill Stewart <email@hidden>
  • Date: Fri, 21 Jun 2002 10:38:23 -0700

on 19/6/02 6:33 PM, John Lazzaro wrote:
> Hi everyone,
>
> Could someone clarify the coreaudio developer
> comments in Section 2 of RME's info page for their
> OSX beta driver?
>
> http://www.rme-audio.de/english/mac/osxdsp.htm
>
> Is this "mono mode" simply an organization
> of AudioBufferList as a set of mono streams, or is
> there something else going on here? Thanks, on the
> off change this is Jaguar-related my apologies, but
> I don't think it could be since they note that iTunes
> works using this "mono mode" today ...

Its an AudioBufferList where each buffer in the list represents a mono
channel. This is a representation of how the hardware lays out its channels,
and their comments about the conversion of this much data to interleaved are
also accurate.

Not only do we expect to see drivers appearing in this manner, but we would
actively encourage driver writers to publish their drivers in a manner that
best represents the layout of the driver's memory itself. This is most
efficient.

And yes - we do expect applications to support both devices that have
interleaved and non-interleaved channels

Bill

> -------------------------------------------------------------------------
> John Lazzaro -- Research Specialist -- CS Division -- EECS -- UC Berkeley
> lazzaro [at] cs [dot] berkeley [dot] edu www.cs.berkeley.edu/~lazzaro
> -------------------------------------------------------------------------
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References: 
 >clarification on RME suggestions ... (From: John Lazzaro <email@hidden>)

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