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Re: Simple HAL device question
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Re: Simple HAL device question


  • Subject: Re: Simple HAL device question
  • From: Christopher Corbell <email@hidden>
  • Date: Fri, 30 Aug 2002 17:50:28 -0700

Jeff Moore wrote:

On Thursday, August 29, 2002, at 08:28 AM, Christopher Corbell wrote:

....Calling GetDeviceProperty(kAudioDevicePropertyStreamConfiguration)
for the same set of devices returns without errors but one of the devices returns
an AudioBufferList with 0 channels. This happens regardless of the
is-input flag with this device. Is this normal?


This seems kind of weird. All devices should have at least one stream, be it an input our an output stream. What hardware are you working with?

....


Thanks for the help with my questions. Knowing that the channel-number is
ignored for kAudioDevicePropertyStreamConfiguration clears things up.

As for the buffer list with mNumChannels set to 0, it was my bug after
all - I thought I was testing both settings for the bIsInput flag but I was
just testing output twice, so the iMic input device returned an empty list.

Thanks again!
- Chris
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References: 
 >Re: Simple HAL device question (From: Jeff Moore <email@hidden>)

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