public CameraInfo GetCameraInfo(int cameraNum)
{
if (this.m_infoCache.ContainsKey(cameraNum))
{
return(this.m_infoCache[cameraNum]);
}
CameraInfo info = new CameraInfo();
using (MMAL_PARAMETER_CAMERA_INFO_T_Wrapper param = new MMAL_PARAMETER_CAMERA_INFO_T_Wrapper())
{
//param.hdr.DumpOffsets();
//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;
uint size = param.hdr.size;
param.hdr.size = size - 4u; // Deliberately undersize to check firmware veresion
//param.hdr.size = (uint)(MMAL_PARAMETER_CAMERA_INFO_T.Size - 4);
MMAL_STATUS_T status = MMALNativeMethods.PortParameterGet(this.HandleWrapper.control, param);
if (status != MMAL_STATUS_T.MMAL_SUCCESS)
{
// Running on newer firmware
param.hdr.size = size;
//param.hdr.size = (uint)(MMAL_PARAMETER_CAMERA_INFO_T.Size);
status = MMALNativeMethods.PortParameterGet(this.HandleWrapper.control, param);
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);
}
