Getting kAudioHardwareIllegalOperationError in this situation most
likely means that one of your arguments is bad.
It also could signify that something failed internally such as looking
up the localized string in the driver's resource bundle. If this is
the case, then it could mean that there is some memory corruption in
your process or that the driver's resource bundle has become corrupt.
On Mar 1, 2007, at 4:32 PM, Ulrich David wrote:
I have a small app which get all avaible audio devices and sources
and put it in menus. I used HALLab for example to write the code,
but in objective-c++ instead of cpp.
I use this app for 2 years now and all works well (on PowerPC).
I recently get a MacPro and I notice that I have trouble with
getting kAudioDevicePropertyDataSourceNameForIDCFString after
changing a source.
I have listener in my app. When data source or device property
change, I update my menus (rebuilding them from scratch with a
complete discover of device and source).
The first load of app build a complete menu without error. But when
I change source, for example I put my headphone on front panel of
MacPro) the data source name given by
is nul !!
I got an OSStatus error : 1852797029 -> ('nope')
It's very strange because I use the same function at the start of
the app which return me a valid name. When the datasource change I
destroy and re-create a full new object handling the property of
device and attached datasources...
I don't have this problem on HALLab. I control the device ID, data
source ID, channel, sizeof AudioValueTranslation between the two app
and they are exactly the same when the problem occurs.
I don't know what to do now. Have someone an idea?
--
Jeff Moore
Core Audio
Apple
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