static extern int AudioUnitGetProperty(IntPtr inUnit,
[MarshalAs(UnmanagedType.U4)] AudioUnitPropertyIDType inID,
[MarshalAs(UnmanagedType.U4)] AudioUnitScopeType inScope,
[MarshalAs(UnmanagedType.U4)] uint inElement,
ref MonoTouch.AudioToolbox.AudioStreamBasicDescription outData,
ref uint ioDataSize
);
public void SetAudioFormat(MonoTouch.AudioToolbox.AudioStreamBasicDescription audioFormat, AudioUnitScopeType scope, uint audioUnitElement)
{
int err = AudioUnitSetProperty(_audioUnit,
AudioUnitPropertyIDType.kAudioUnitProperty_StreamFormat,
scope,
audioUnitElement,
ref audioFormat,
(uint)Marshal.SizeOf(audioFormat));
if (err != 0)
{
throw new ArgumentException(String.Format("Error code:{0}", err));
}
}