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Re: User space driver plug-in problems on Tiger
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Re: User space driver plug-in problems on Tiger


  • Subject: Re: User space driver plug-in problems on Tiger
  • From: Jeff Moore <email@hidden>
  • Date: Tue, 31 May 2005 13:10:36 -0700

Catching up on the back log. Sorry for the delay.

kAudioHardwareBadDeviceError is only ever returned when the AudioDeviceID in question can't be found. How did you get that ID?

On May 19, 2005, at 7:27 AM, Stéphane Letz wrote:

Our user space driver (implementing the AudioHardwarePlugin.h API) has some problems on Tiger. It is a kind of "wrapper" on a real audio driver that has to redirect some calls coming from the application on a real driver.

We are using the AudioDeviceID of the real driver and just redirect some calls, something like :

OurPlugIn::DeviceGetProperty(...)
{
....
OSStatus err = AudioDeviceGetProperty(fReadDriver_ AudioDeviceID,......);
....
}


This was perfectly working on Jaguar and Panther, but on Tiger the AudioDeviceGetProperty now returns a kAudioHardwareBadDeviceError code, although the AudioDeviceID value seems perfectly correct.

Any idea?

Thanks

Stephane Letz


--

Jeff Moore
Core Audio
Apple


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References: 
 >User space driver plug-in problems on Tiger (From: Stéphane Letz <email@hidden>)

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