replacing deprecated AudioSessionSetProperty

Question

    AudioSessionSetProperty(kAudioSessionProperty_PreferredHardwareIOBufferDuration, sizeof(bufferLength), &bufferLength);

How can I per lace this method in iOS 7??

Answer 1

AudioSession api was deprecated in iOS7 in favor of AVAudioSession class. To replace your call you need to use setPreferredIOBufferDuration:error: method:

NSError* error;
[session setPreferredIOBufferDuration:bufferLength error:&error];

Note also that buffer duration is not the same as buffer size, buffer size should be enough to hold duration time of audio data.