private void RegisterStateChangedCallback()
{
_stateChangedCallback = (IntPtr handle, int previous, int current, bool byPolicy, IntPtr _) =>
{
_state = (AudioIOState)current;
StateChanged?.Invoke(this,
new AudioIOStateChangedEventArgs((AudioIOState)previous, _state, byPolicy));
};
AudioIOUtil.ThrowIfError(
AudioInput.SetStateChangedCallback(_handle, _stateChangedCallback, IntPtr.Zero));
}
private void RegisterStateChangedCallback()
{
_stateChangedCallback = (IntPtr handle, int previous, int current, bool byPolicy, IntPtr _) =>
{
_state = (AudioIOState)current;
StateChanged?.Invoke(this,
new AudioIOStateChangedEventArgs((AudioIOState)previous, _state, byPolicy));
};
AudioOutput.SetStateChangedCallback(_handle, _stateChangedCallback, IntPtr.Zero)
.ThrowIfFailed("Failed to set state changed callback.");
}
internal static extern int SetStateChangedCallback(IntPtr handle, AudioStateChangedCallback callback, IntPtr user_data);