/// <summary>
/// Create an instance of a component.
/// The newly created component will expose ports to the client .All the exposed ports are
/// disabled by default.
/// Note that components are reference counted and creating a component automatically
/// acquires a reference to it (released when Dispose is called).
/// </summary>
/// <param name="componentName">name of the component to create, e.g. "video_decode"</param>
/// <returns>returned component on success</returns>
internal MMALComponent ComponentCreate(MMALComponentName componentName)
{
if (componentName == null)
{
throw new ArgumentNullException(nameof(componentName));
}
var handle = this.CreateComponentHandle(componentName);
return(new MMALComponent(handle, componentName));
}
private /*MMAL_COMPONENT_T*/ IntPtr CreateComponentHandle(MMALComponentName componentName)
{
Console.WriteLine("Creating component " + componentName.Value);
//var status = NativeMethods.ComponentCreate(componentName.Value, out MMAL_COMPONENT_T handle);
//if (status != MMAL_STATUS_T.MMAL_SUCCESS)
// throw new MMALException(status);
//handle.DumpFields();
//return handle;
var status = MMALNativeMethods.ComponentCreate(componentName.Value, out IntPtr handle);
if (status != MMAL_STATUS_T.MMAL_SUCCESS)
{
throw new MMALException(status);
}
return(handle);
//Console.WriteLine($"Ptr={handle}");
//for (int i = 1; i <= 100; i++)
//{
// byte b = Marshal.ReadByte(handle, i - 1);
// Console.Write("{0:X2} ", b);
// if (i % 16 == 0)
// Console.WriteLine();
// else if (i % 8 == 0)
// Console.Write(" ");
//}
//IntPtr namePtr = Marshal.ReadIntPtr(handle, Marshal.SizeOf<IntPtr>() * 2);
//Console.WriteLine($"namePtr={namePtr}");
//string name = Marshal.PtrToStringAnsi(namePtr);
//Console.WriteLine($"name={name}");
//MMAL_COMPONENT_T comp = Marshal.PtrToStructure<MMAL_COMPONENT_T>(handle);
//comp.DumpFields();
////throw new NotImplementedException();
//return comp;
}
internal CameraInfoComponent(/*MMAL_COMPONENT_T*/ IntPtr handle, MMALComponentName name) : base(handle, name)
{
this.m_infoCache = new Dictionary <int, CameraInfo>();
}
internal CameraComponent(/*MMAL_COMPONENT_T*/ IntPtr handle, MMALComponentName name) : base(handle, name)
{
}
internal MMALComponent(/*MMAL_COMPONENT_T*/ IntPtr handle, MMALComponentName name)
{
this.m_handle = handle;
this.m_handleWrapper = new MMAL_COMPONENT_T_Wrapper(this.m_handle);
this.m_name = name;
}
