Re: getting host tempo in an Audio Unit
Re: getting host tempo in an Audio Unit
- Subject: Re: getting host tempo in an Audio Unit
- From: Artemiy Pavlov <email@hidden>
- Date: Sat, 26 Aug 2006 19:57:03 +0300
Hello Stiwi,
nice to meet you here and thanks for the reply!
I used this code inside my Process() function:
Float64 Tempo;
OSStatus err = AUBase::CallHostBeatAndTempo(NULL, &Tempo);
But I get this error when trying to build the project:
http://artemio.net/tmp/Picture 1.png
Are there any special things to define first?
Thanks again,
Artemiy.
On 26 Aug 2006, at 7:20 PM, stiwi wrote:
Hi Artemiy,
in AUBase.h you will find this utility method.
OSStatus CallHostBeatAndTempo (Float64 *outCurrentBeat, Float64
*outCurrentTempo)
{
return (mHostCallbackInfo.beatAndTempoProc ?
(*mHostCallbackInfo.beatAndTempoProc)
(mHostCallbackInfo.hostUserData, outCurrentBeat, outCurrentTempo) :
-1);
}
I use it in my render call like this
Float64 tempo;
OSStatus err = AUBase::CallHostBeatAndTempo(NULL, &tempo);
if (err == noErr)
{
do whatever needs to be done;
}
The tempo value is returned as beats per minutes (bpm)
On 26.08.2006, at 17:35, Artemiy Pavlov wrote:
Hello all!
This is a quite too simple question, but I can't easily find an
answer in the Core Audio docs.
How do I go about getting the host's tempo in an Audio Unit
effect? Should probably be as simple as GetSampleRate() but just
can't find it, sorry.
Thanks!
With best wishes,
Artemiy.
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