Re: IOMemoryDescriptor: Jedai trick for the tortuous
Re: IOMemoryDescriptor: Jedai trick for the tortuous
- Subject: Re: IOMemoryDescriptor: Jedai trick for the tortuous
- From: "Timothy J. Wood" <email@hidden>
- Date: Sun, 6 Oct 2002 18:18:17 -0700
On Sunday, October 6, 2002, at 03:08 PM, Michel wrote:
The game is to allocate some memory, get a list of physical ranges it
occupies, and remap them *twice* end to end.
FYI -- Kurt Revis has an example of this technique in his
'PlayBufferedSoundFile' example on www.snoize.com.
This is an attractive approach, but IMHO it isn't worth it. It
really isn't that hard to implement a circular buffer (although I
suppose it would be much more interesting in any sort of _complicated_
algorithm (some actual sound filter) -- straight memcpy'ing just isn't
that complicated :)
-tim
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