Re: Bug in IOAudioStream?
Re: Bug in IOAudioStream?
- Subject: Re: Bug in IOAudioStream?
- From: BlazeAudio Developer <email@hidden>
- Date: Thu, 18 Aug 2005 17:09:10 +0530
At 12:21 AM 8/16/2005, Shaun Wexler wrote:
On Aug 15, 2005, at 11:42 AM,
Jeff Moore wrote:
Looking at the IORegistry I see
that all three streams are
present, but the IOAudioStreamStartingChannelNumber property for
the third stream is missing.
This is why the HAL ignores this third stream. That property is
vital so that the HAL knows what order to present the streams in
the IOProc.
FWIW, this is also one of the bugs in Digidesign's CoreAudio user- land
driver. It doesn't set the starting channel number of its
streams; they all report 0.
As I mentioned in my other message, the driver cannot set this property.
The driver can set the starting channel Id, but not the starting channel
number.
This can wreak havoc on
app's which
depend on the property. As a workaround I simply rely on the HAL
to
give me a proper buffer list, and parse from that.
Understood!
Thanks.
Devendra.
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