Modified PDAudioController.m

- (PdAudioStatus)configurePlaybackWithSampleRate:(int)sampleRate
                                  numberChannels:(int)numChannels
                                    inputEnabled:(BOOL)inputEnabled
                                   mixingEnabled:(BOOL)mixingEnabled
                                  ambientEnabled:(BOOL)ambientEnabled {
    
	PdAudioStatus status = PdAudioOK;
    if (inputEnabled && ![[AVAudioSession sharedInstance] inputIsAvailable]) {
        inputEnabled = NO;
        status |= PdAudioPropertyChanged;
    }
    status |= [self updateSampleRate:sampleRate];
    if (status == PdAudioError) {
        return PdAudioError;
    }
    status |= [self selectCategoryWithInputs:inputEnabled isAmbient:ambientEnabled allowsMixing:mixingEnabled];
    
    if (status == PdAudioError) {
        return PdAudioError;
    }
    status |= [self configureAudioUnitWithNumberChannels:numChannels inputEnabled:inputEnabled];
	AU_LOGV(@"configuration finished. status: %d", status);
	return status;
}

- (PdAudioStatus)configureAmbientWithSampleRate:(int)sampleRate
                                 numberChannels:(int)numChannels
                                  mixingEnabled:(BOOL)mixingEnabled {
	PdAudioStatus status = [self updateSampleRate:sampleRate];
    if (status == PdAudioError) {
        return PdAudioError;
    }
    status |= [self selectCategoryWithInputs:NO isAmbient:YES allowsMixing:mixingEnabled];
    if (status == PdAudioError) {
        return PdAudioError;
    }
    status |= [self configureAudioUnitWithNumberChannels:numChannels inputEnabled:NO];
	AU_LOGV(@"configuration finished. status: %d", status);
	return status;
}