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IO Buffer Size Range

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IO Buffer Size Range

Subject: IO Buffer Size Range
From: AI Developer <email@hidden>
Date: Wed, 20 Aug 2008 10:49:03 +0530

How does the CoreAudio/HAL determine the I/O buffer size range for a device/driver?

This is the range that's retrieved by kAudioDevicePropertyBufferFrameSize property.

The maximum value seems to be related to the value passed to IOAudioEngine::setNumSampleFramesPerBuffer() by the driver.

But it's not obvious in terms of what the relationship is between the two.

Is there a way that a driver can directly control these values?

Thanks.
Devendra.
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