public XtAudio(string id, IntPtr window, XtTraceCallback trace, XtFatalCallback fatal)
{
XtAudio.trace = trace;
XtAudio.win32Trace = trace == null ? null : new XtNative.TraceCallbackWin32(trace);
XtAudio.linuxTrace = trace == null ? null : new XtNative.TraceCallbackLinux(trace);
XtAudio.fatal = fatal;
XtAudio.win32Fatal = fatal == null ? null : new XtNative.FatalCallbackWin32(fatal);
XtAudio.linuxFatal = fatal == null ? null : new XtNative.FatalCallbackLinux(fatal);
Delegate traceDelegate = Environment.OSVersion.Platform == PlatformID.Win32NT ? (Delegate)win32Trace : linuxTrace;
Delegate fatalDelegate = Environment.OSVersion.Platform == PlatformID.Win32NT ? (Delegate)win32Fatal : linuxFatal;
IntPtr tracePtr = trace == null ? IntPtr.Zero : Marshal.GetFunctionPointerForDelegate(traceDelegate);
IntPtr fatalPtr = fatal == null ? IntPtr.Zero : Marshal.GetFunctionPointerForDelegate(fatalDelegate);
using (XtNative.Utf8Buffer buffer = new XtNative.Utf8Buffer(id))
XtNative.XtAudioInit(buffer.ptr, window, tracePtr, fatalPtr);
}