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RE: Bug in CoreAudio, Channel Names property?

Hi Alex,

You are right, providing names is optional. I'm not concerned about drivers that do not implement these properties.

Please read my note carefully.

What I'm talking about is the situation in which the driver *does* implement the property, yet CoreAudio does not let an application access it using one of the documented mechanisms.

BTW, the driver does not implement two properties - it's the same property, which can be accessed in two ways. Either by retrieving pointer to a CFString object or by retrieving a null terminated string.

Now, In cases where the driver *does* provide the property, CoreAudio allows retrieving it as a CFString, but not as a null terminated string. And that's what I consider a bug in CoreAudio.

Thanks.
Devendra.

At 11:47 PM 11/27/2006, Alex Sheh wrote:
Hi Devendra,
3rd party CoreAudio drivers are not required to implement either of the below properties, and many do not - it's not a CoreAudio bug, rather a driver deficiency.  AFAIK, it is something that you can't rely on being implemented when you query the driver.
 
- Alex

From: coreaudio-api-bounces+asheh=email@hidden [ mailto:coreaudio-api-bounces+asheh=email@hidden] On Behalf Of BlazeAudio Developer
Sent: Saturday, November 25, 2006 3:02 AM
To: email@hidden
Subject: Bug in CoreAudio, Channel Names property?

Hi,

I have run across a situation which might be a bug in the CoreAudio (framework?).

This has to do with the audio device property for channel names.

If I try to retrieve the property using kAudioDevicePropertyChannelName it will not work.

However, if I use kAudioDevicePropertyChannelNameCFString, it works just fine!

Should I file a bug report, or am I missing something here?

Thanks.
Devendra. 
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References: 
 >Bug in CoreAudio, Channel Names property? (From: BlazeAudio Developer <email@hidden>)
 >RE: Bug in CoreAudio, Channel Names property? (From: "Alex Sheh" <email@hidden>)



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