IPod playback + microphone record at the same time?

Question

Hey,
I'm making an app that requires music to be playing at the same time as the app is recording audio through the microphone.
Specifically, I need a volume reading from the microphone to be calculated constantly (30 times a second or so) at the same time as music is playing through the iPod app.
I also need to be able to set the volume of the music automatically from my code (ie not by the user using a slider)
I am currently using MPVolumeView to set the volume and AVAudioRecorder to record the microphone volume.
Problems with this:
MPVolumeView only allows change of volume by user interaction (AFAIK?), not by the code setting it automatically.
Also, iOS doesn't seem to like both running at the same time... If music isn't playing, I get a readout from AVAudioRecorder of the sound its picking up but no volume slider, if the iPod is playing, I get the MPVolumeView slider, but the microphone readout does not work.
Please help me out?
I know this is possible, apps like IAmTPain do both tasks simultaneously (although the volume of the playback is not automatically variated).
Thanks for any replies! :P

Answer 1

Hello!
Try to use the cloner directly for the player. It seems that all clones need a cloneableableDataSource, which is working on a player or processor:
DataSource cloner;
DataSource forPlay;
DataSource forSave;
//...get data source from the receive stream
dsource = stream.getDataSource();
cloner = Manager.createCloneableDataSource( dsource );// forPlay = ((SourceCloneable)cloner).createClone();
player = Manager.createPlayer( cloner );
//when do recording
forSave = ((SourceCloneable)cloner).createClone();
Processor p = Manager.createProcessor(forSave);