Apple

On 08/08/2012, at 5:46 AM, Michael Tyson <email@hidden> wrote:

Hey folks,

On iOS, does anyone know a way to obtain the number of hardware input channels while in the MediaPlayback audio session category?

I discovered today - much to my embarrassment - that recording is not only possible in the MediaPlayback audio category, but is in fact much more multitasking-friendly. I always used PlayAndRecord whenever doing any recording stuff, as per Apple's guidelines, and was simply used to the fact that only one app could use this category at a time. After discovering another app happily pulling away at the mic audio at the same time as an app using PlayAndRecord, I realised that MediaPlayback was a viable option for a recording app. This is simply fantastic, as it enables my music app to coexist even better with other music apps.

Unfortunately, however, querying the kAudioSessionProperty_CurrentHardwareInputNumberChannels property spews a "!cat" error (incompatible category). I just gotta have that property value.

I'm aware that I could switch to PlayAndRecord/Record for the duration of the session property query, but I don't like that option due to the fact that it'll clobber any other app using a Record category.

Anyone have any ideas?

Many thanks,
Michael
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden

References:
	>kAudioSessionProperty_CurrentHardwareInputNumberChannels in MediaPlayback (From: Michael Tyson <email@hidden>)