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RE: Runaway clock?
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RE: Runaway clock?


  • Subject: RE: Runaway clock?
  • From: Todd Blanchard <email@hidden>
  • Date: Sun, 22 Jun 2008 02:40:03 -0700


CAClockStop is definitely broken - below is a link to a small program demonstrating the problem. I filed a bug as well, but those never seem to get resolved. Actually, the clock thinks it is stopped as it will no longer return an error if you set the current time, but asking it for the current time repeatedly shows it is still counting.


http://www.audiofreakshow.com/ClockTest.zip



On Jun 16, 2008, at 12:12 PM, William Stewart wrote:

If you open the transport window in AULab, do you see the same problem? All we are doing there is calling the Stop call when the user hits the stop button, and that seems to work ok for me. We do a little bit of extra stuff to manage whether the clock is running or not for the AU Host callbacks, but I don't see any additional code here to deal with the clock "not stopping"

Bill

On Jun 13, 2008, at 9:42 PM, Todd Blanchard wrote:

A kind soul pointed me to CAClock and I'm trying to use it to provide metronome and countoff. I can create the clock, set the tempo, start it playing. I run a timer in the UI thread the reads the current measure/beat/fraction and puts it into a text field regularly. Works great. It shows 1.1.000 initially until I hit start. If I up the tempo it counts faster, down it and it slows down. Lovely.

Except for stop. CAClockStop returns noErr, but the numbers keep going up in the display just the same. Is there another way to stop the clock short of hitting it with a hammer?

This is 10.4 BTW.

-Todd Blanchard
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