/// <inheritdoc />
internal override void EnableOutputPort(bool sendBuffers = true)
{
if (!this.Enabled)
{
this.ManagedOutputCallback = OutputCallbackProvider.FindCallback(this);
this.NativeCallback = this.NativeOutputPortCallback;
IntPtr ptrCallback = Marshal.GetFunctionPointerForDelegate(this.NativeCallback);
this.PtrCallback = ptrCallback;
if (this.ManagedOutputCallback == null)
{
MMALLog.Logger.Warn("Callback null");
this.EnablePort(IntPtr.Zero);
}
else
{
this.EnablePort(ptrCallback);
}
if (this.ManagedOutputCallback != null)
{
this.SendAllBuffers(sendBuffers);
}
}
if (!this.Enabled)
{
throw new PiCameraError("Unknown error occurred whilst enabling port");
}
}
/// <summary>
/// Register a new <see cref="IOutputCallbackHandler"/>.
/// </summary>
/// <param name="handler">The callback handler.</param>
public static void RegisterCallback(IOutputCallbackHandler handler)
{
if (handler?.WorkingPort == null)
{
throw new NullReferenceException("Callback handler not configured correctly.");
}
if (WorkingHandlers.ContainsKey(handler.WorkingPort))
{
WorkingHandlers[handler.WorkingPort] = handler;
}
else
{
WorkingHandlers.Add(handler.WorkingPort, handler);
}
}
/// <summary> /// Registers a <see cref="IOutputCallbackHandler"/>. /// </summary> /// <param name="handler">The output handler.</param> public void RegisterOutputCallback(IOutputCallbackHandler handler) => OutputCallbackProvider.RegisterCallback(handler);