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AudioConverter and QDM2

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AudioConverter and QDM2

Subject: AudioConverter and QDM2
From: Stevo Brock <email@hidden>
Date: Wed, 18 May 2005 16:25:10 -0700

Hi,

I'm trying to get an AudioConverter to produce QDM2 data. I can setup and create the AudioConverter fine (as far as I know). However, I'm at a loss as to how to set the QDM2 codec parameters. I have the parameters stored in a CFDataRef from the codec dialog (through SoundComponentGetInfo and friends). How do I pass these parameters to the AudioConverter.

I have tried status = AudioConverterSetProperty(mConverter, kAudioConverterPropertyOutputCodecParameters, CFDataGetLength (dataRef), CFDataGetBytePtr(dataRef));

and

status = AudioConverterSetProperty(mConverter, kAudioConverterCompressionMagicCookie, CFDataGetLength(dataRef), CFDataGetBytePtr(dataRef));

both with no luck. What is the appropriate method for accomplishing this?

-Stevo Brock

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