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Reading supported sample rate in a device

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Reading supported sample rate in a device

Subject: Reading supported sample rate in a device
From: Stéphane Letz <email@hidden>
Date: Thu, 9 Jun 2005 19:06:18 +0200

On Panther we were using the kAudioDevicePropertyStreamFormats property to get information on all supported formats, then read the mSampleRate field to get the supported sample rate for each of the stream format that was available.

On Tiger when used on an agregate device built with the USB iMic (so that the 2 input/output internal device appears as a single device easier to handle) twochannels can be retrieved but both show a sample rate value of 0!

Is this behaviour a bug ?

I see that HALCode is using the kAudioDevicePropertyAvailableNominalSampleRates property to get the sample rate values.

Is this the recommended way of doing?

Thanks

Stephane Letz
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