public unsafe void AddDrawCallback(libobs.draw_callback callback, IntPtr param)
{
// store the delegate tuple to prevent delegate getting removed
// by garbage collector
delegateTuple tuple = new delegateTuple(callback, param);
delegateRefs.Add(tuple);
libobs.obs_display_add_draw_callback(instance, tuple.Item1, tuple.Item2);
}
public unsafe void RemoveCallback()
{
if (!delegateRefs.Any())
{
return;
}
delegateTuple tuple = delegateRefs.First();
libobs.obs_volmeter_remove_callback(instance, tuple.Item1, tuple.Item2);
}
public unsafe void AddCallback(libobs.obs_volmeter_updated_t callback, IntPtr param)
{
// store the delegate tuple to prevent delegate getting removed
// by garbage collector
// Currently only support one callback
if (delegateRefs.Any())
{
RemoveCallback();
}
delegateTuple tuple = new delegateTuple(callback, param);
delegateRefs.Add(tuple);
libobs.obs_volmeter_add_callback(instance, tuple.Item1, tuple.Item2);
}
public unsafe void RemoveDrawCallback(libobs.draw_callback callback, IntPtr param)
{
// use the reference of the archived delegate.
// if delegate was created as the method were called (user passed
// function as a first parameter instead of the actual delegate),
// it would not match with the callback stored in libobs.
delegateTuple tuple = new delegateTuple(callback, param);
int index = delegateRefs.IndexOf(tuple);
if (index != -1)
{
tuple = delegateRefs[index];
delegateRefs.RemoveAt(index);
}
libobs.obs_display_remove_draw_callback(instance, tuple.Item1, tuple.Item2);
}
