public unsafe SequencerClientId RegisterClient(string name, SequencerEventCallback callback)
{
ThrowIfDisposed();
LibFluidsynth.fluid_event_callback_t wrapper = null;
var callbackPtr = IntPtr.Zero;
if (callback != null)
{
wrapper = (time, @event, seq, data) =>
{
using (var ev = new SequencerEvent(@event))
{
callback(time, ev);
}
};
callbackPtr = Marshal.GetFunctionPointerForDelegate(wrapper);
}
var id = LibFluidsynth.fluid_sequencer_register_client(Handle, name, callbackPtr, null);
if (id == LibFluidsynth.FluidFailed)
{
throw new FluidSynthInteropException("fluid_sequencer_register_client failed");
}
if (wrapper != null)
{
_clientCallbacks.Add(id, wrapper);
}
return(new SequencerClientId(id));
}