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PhysicalFormat vs. VirtualFormat

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PhysicalFormat vs. VirtualFormat

Subject: PhysicalFormat vs. VirtualFormat
From: Derk-Jan Hartman <email@hidden>
Date: Mon, 5 Dec 2005 01:38:59 +0100

For changing to encoded audio output mode, i need to change the AudioStream format.

I currently do this by changing the physical format trough
AudioStreamSetProperty( stream, masterchannel etc)

However, reading how kAudioDeviceStreamFormats seems to become kAudioStreamVirtualFormats, and how the selection works, i think perhaps i should actually set kAudioDeviceStreamFormat / kAudioStreamVirtualFormat on the AudioStream, instead of physicalformat? Or should i set/check both are cac3 ? in that case which should be checked and set first?

What am i supposed to do (keeping 10.3 compatibility in mind).
I'm confused :D

DJ
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