Re: Purpose of kAudioDevicePropertyChannelNumberNameCFString
Re: Purpose of kAudioDevicePropertyChannelNumberNameCFString
- Subject: Re: Purpose of kAudioDevicePropertyChannelNumberNameCFString
- From: Jeff Moore <email@hidden>
- Date: Thu, 21 Dec 2006 11:50:51 -0800
The number name is used in conjunction with the category name to allow
you to label a bank of things. For example, here's a bank of sliders
labled with the category and each slider labeled with the number
(pardon my ascii art):
----- Category ----
| | |
| | |
+ + +
| | |
| | |
Number Number Number
On Dec 21, 2006, at 7:27 AM, email@hidden wrote:
In my simple host program I've started to query the Name properties
for my output devices. I have 2 Firewire devices, Digidesign MBox 2
Pro and M-Audio FireWire Audiophile. On both of these devices, the
ChannelName, ChannelNumberName and ChannelCategoryName properties
are available in the Output section. However, ChannelNumberName and
ChannelCategoryName seem to be always returning identical strings
(to each other), for every channel. The properties are not
available on the Built-in audio.
I was expecting a string such as "1" or "One" for the
ChannelNumberName on Channel 1. What is the expected behavior?
HALLab does not seem to display these properties.
--
Jeff Moore
Core Audio
Apple
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