Re: Playing multiple sounds
Re: Playing multiple sounds
- Subject: Re: Playing multiple sounds
- From: "Andreas Falkenhahn" <email@hidden>
- Date: Sat, 25 Aug 2007 13:26:17 +0200
>> Ok, thanks. I've now successfully installed a render callback on
>> the mixer.
>> But now there's a new problem: When the render proc is called,
>> ioData->mNumberBuffers
>> is 2 now, which makes AudioConverterFillComplexBuffer() exit with a
>> paramErr
>> because it obviously expects only one buffer.
>>
>> What am I doing wrong here?
>
>The format is mismatched - the version 1 AUs (that you were using)
>were using interleaved floats. The format for v2 units use
>deinterleaved floats. Have a look at the SetCanonical call in
>CAStreamBasicDescription.cpp (in PublicUtility in /Developer/Examples/
>CoreAudio)
Ok, thanks. Now it's playing correctly. But: Am I not somewhat overriding
the user's default settings by applying SetCanonical() on the default output
format gotten through AudioUnitGetProperty()? I'm just wondering because
SetCanonical() sets mBitsPerChannel to 32, mChannelsPerFrame to 2,
BytesPerFrame to sizeof(Float32), etc.
Why do I need to get the default stream format at all then if I'm overriding it
with my own settings (using SetCanonical) right after I got it?
Andreas
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