/// <summary>
/// Disable processing on a component
/// </summary>
public void Disable()
{
var status = MmalNativeMethods.ComponentDisable(this.m_handle);
if (status != MMAL_STATUS_T.MMAL_SUCCESS)
{
throw new MMALException(status);
}
}
private /*MMAL_COMPONENT_T*/ IntPtr CreateComponentHandle(MMALComponentName componentName)
{
Console.WriteLine("Creating component " + componentName.Value);
//var status = MmalNativeMethods.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($"name={name}");
//MMAL_COMPONENT_T comp = Marshal.PtrToStructure<MMAL_COMPONENT_T>(handle);
//comp.DumpFields();
////throw new NotImplementedException();
//return comp;
}
public CameraInfo GetCameraInfo(int cameraNum)
{
if (this.m_infoCache.ContainsKey(cameraNum))
{
return(this.m_infoCache[cameraNum]);
}
MMAL_PARAMETER_CAMERA_INFO_T param = new MMAL_PARAMETER_CAMERA_INFO_T();
param.hdr = new MMAL_PARAMETER_HEADER_T();
param.hdr.id = MMALParameterId.MMAL_PARAMETER_CAMERA_INFO;
//param.hdr.size = (uint)(Marshal.SizeOf<MMAL_PARAMETER_CAMERA_INFO_T>(param) - 4); // Deliberately undersize to check firmware veresion
param.hdr.size = 152 - 4;
MMAL_STATUS_T status = MmalNativeMethods.PortParameterGet(this.Handle.control, param.hdr);
CameraInfo info = new CameraInfo();
if (status != MMAL_STATUS_T.MMAL_SUCCESS)
{
// Running on newer firmware
//param.hdr.size = (uint)(Marshal.SizeOf<MMAL_PARAMETER_CAMERA_INFO_T>(param));
param.hdr.size = 152;
status = MmalNativeMethods.PortParameterGet(this.Handle.control, param.hdr);
if (status == MMAL_STATUS_T.MMAL_SUCCESS && param.num_cameras > cameraNum)
{
info.Width = param.cameras[cameraNum].max_width;
info.Height = param.cameras[cameraNum].max_height;
info.Name = param.cameras[cameraNum].camera_name;
info.DumpProperties();
}
else
{
Console.WriteLine($"Cannot read camera info, keeping the defaults for OV5647. status={status} param.num_cameras={param.num_cameras}");
//vcos_log_error("Cannot read camera info, keeping the defaults for OV5647");
}
}
else
{
// Older firmware
// Nothing to do here, keep the defaults for OV5647
Console.WriteLine("Older firmware, keeping the defaults for OV5647");
}
//Assume defaults
if (string.IsNullOrEmpty(info.Name))
{
info.Name = "OV5647";
}
if (info.Width == 0)
{
info.Width = 2592;
}
if (info.Height == 0)
{
info.Height = 1944;
}
this.m_infoCache.Add(cameraNum, info);
return(info);
}
/// <summary>
/// Destroy a previously created component
/// Release an acquired reference on a component. Only actually destroys the component when
/// the last reference is being released.
/// </summary>
public void Dispose()
{
MmalNativeMethods.ComponentDestroy(this.m_handle);
}
/// <summary>
/// Acquire a reference on a component.
/// Acquiring a reference on a component will prevent a component from being destroyed until
/// the acquired reference is released(by a call to Dispose).
/// References are internally counted so all acquired references need a matching call to
/// release them.
/// </summary>
public void Acquire()
{
MmalNativeMethods.ComponentAcquire(this.m_handle);
}
