Re: Multimedia timing on OS X
Re: Multimedia timing on OS X
- Subject: Re: Multimedia timing on OS X
- From: Paul Davis <email@hidden>
- Date: Tue, 03 May 2011 16:58:37 -0400
On Tue, May 3, 2011 at 4:53 PM, Garett Shulman <email@hidden> wrote:
> This is an interesting topic. Based on my own googling, I haven't noticed a general technique for doing high resolution multimedia timing on OS X. I would like this for scheduling midi events also. It seems like there ought to be an abstraction for high resolution multimedia timing in the cocoa platform. I'm curious about the intention of the CoreAudio clock. Additional techniques may involve mach absolute time, NSTimer with a high priority, and CAMediaTiming. Do folks on this list have any insight or wisdom about techniques for high resolution multimedia timing on cocoa? Thanks! -Garett
the thing is, as i just mentioned, if you're using CoreAudio to do
audio stuff, you already have a high resolution clock. things only
start to get tricky when you want to sync that with a video clock or
the system clock. for the work that many of us do, neither of those
things are necessary.
presumably, then, you want a hi-res timing infrastructure that doesn't
involve (or at least does not need) CoreAudio?
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