internal MMALException(MMAL_STATUS_T status) : base(status.ToString())
{
this.m_status = status;
}
public static extern unsafe MMAL_PARAMETER_HEADER_T *mmal_port_parameter_alloc_get(MMAL_PORT_T *port, uint id, uint size, ref MMAL_STATUS_T status);
public static extern string mmal_status_to_string(MMAL_STATUS_T status);
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);
}