Re: Implementing Properties kAudioUnitProperty_SupportedChannelLayoutTags and kAudioUnitProperty_AudioChannelLayout
Re: Implementing Properties kAudioUnitProperty_SupportedChannelLayoutTags and kAudioUnitProperty_AudioChannelLayout
- Subject: Re: Implementing Properties kAudioUnitProperty_SupportedChannelLayoutTags and kAudioUnitProperty_AudioChannelLayout
- From: William Stewart <email@hidden>
- Date: Tue, 2 Sep 2008 18:32:08 -0700
Hi Motti
Can you try this in AULab (you can create a multichannel document
there) - and see if you have the same result.
Also - have a look in auval - if you are publishing these properties
correctly, you should see the layouts reported (Here's the
AUMatrixReverb auval report for this section):
FORMAT TESTS:
Reported Channel Capabilities (explicit):
[1, 2] [1, 4] [1, 5] [2, 2] [2, 4] [2, 5]
Input/Output Channel Handling:
1-1 1-2 1-4 1-5 1-6 1-7 1-8 2-2 2-4 2-5 2-6
2-7 2-8 4-4 4-5 5-5 6-6 7-7 8-8
X X X X X X
# # AudioChannelLayouts (3), Output Scope:
ChannelLayout is Writable: F
The Unit publishes the following Channel Layouts:
0x650002, 0x6C0004, 0x760005,
Is Audio Channel Layout Available:
Mono Stereo Binau. AU_4 Ambi. AU_5 AU_5_0 AU_6
AU_6_0 AU_7_0 AU_7_0F AU_8 AU_5_1 AU_6_1 AU_7_1 AU_7_1F
X X X
* * PASS
Bill
On Sep 1, 2008, at 5:44 AM, Motti Shneor wrote:
Hello all.
I'm trying to support the
kAudioUnitProperty_SupportedChannelLayoutTags and
kAudioUnitProperty_AudioChannelLayout Properties in my AudioUnit
(subclass of AUMIDIEffectBase) to support surround channel layout
routing in my AU.
When I try to debug through my component, I notice that neither
kAudioUnitGetPropertyInfoSelect nor kAudioUnitGetPropertySelect are
ever called with the above Property ID's.
LogicAudio is my Host application , running on MacOS X.4.11 using
XCode 2.4.1. I can breakpoint within the component entry dispatcher,
and I can hook on other properties without problem.
Am I missing something? Should I raise some flag, or somehow modify
the 'thng' resource describing my AU, or somehow report that I
support these properties to be asked for them?
Thanks for any hint!
Motti Shneor
Senior Software Engineer
Waves Audio Ltd
www.waves.com
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