[pluggo] Re: Events seem to enter pluggo with highly inaccurate timing.

Quote: Mark Pauley wrote on Tue, 27 November 2007 20:46
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> For giggles, could you try to set your buffer size much lower and much  
> higher and then repeat the test?  You should see a corresponding  
> change in the variance of your pp timings.

I think I'll be able to try this tomorrow..

> 
> I know that logic is pretty strict about the outbound midi latency,  
> but the plugins themselves are probably responsible for the time- 
> accuracy of param changes.

The pluggo dev guide (under run time issues) says param changes happen in the scheduler thread, in audio interrupt mode. When the io vector of the host is 1024 samples, this inaccuracy makes sense.

But: [mxj WhichThread] reports that pp's output in the main (low priority queue) thread:

http://www.cycling74.com/forums/index.php?t=msg&th=23867&rid=3579&S=597abedcd552e997564678e83e476151#msg_121659  

> 
> 
> _Mark
> 
> On Nov 5, 2007, at 6:19 AM, Mattijs Kneppers wrote:
> 
> >
> > Hi all,
> >
> > I'm monitoring the output of a pp inside a pluggo.
> >
> > Here is how it looks on my computer:
> > http://www.smadsteck.nl/Pluggo%20timer%20test%202.mov (1.6 MB, h264  
> > codec)
> >
> > As you can see, logic sends an event to the plugin every 1000 ms.  
> > The events are also sent to max with midi. The interval between the  
> > events inside the pluggo has an error of 20-40 ms. Sent to max with  
> > midi, the events have a far smaller timing error: less than 1 ms.
> >
> > If a you could confirm this I would be very thankful. Here are the  
> > source files (logic song, compiled pluggo, pluggo source patch and  
> > midi timer patch):
> > http://www.smadsteck.nl/Pluggo%20timer%20test.zip
> >
> > Mattijs
> >
> > Max 4.6.3, Pluggo 3.6.1, Logic Pro 7.2.3
> > --
> > SmadSteck - http://www.smadsteck.nl
> > Hard- and software for interactive audiovisual sampling
> 
> 
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--
SmadSteck - http://www.smadsteck.nl
Hard- and software for interactive audiovisual sampling