///<summary> Create a capture using the specific camera</summary>
///<param name="camIndex"> The index of the camera to create capture from, starting from 0</param>
private CapturePi(int camIndex)
{
try
{
CvInvoke.CheckLibraryLoaded();
}
catch (Exception e)
{
if (Environment.OSVersion.Platform == PlatformID.Unix)
{
Log.Fatal(m => m("Failed to load OpenCV libraries. Did you copy emguCV binaries from Windows to Linux? You must use Linux compiled emguCV binaries."), e);
}
throw;
}
_captureModuleType = CaptureModuleType.Camera;
try
{
_ptr = CvInvokeRaspiCamCV.cvCreateCameraCapture(camIndex);
}
catch (DllNotFoundException e)
{
Log.Fatal("Are you running with the solution configuration matched to the right OS?", e);
throw;
}
if (_ptr == IntPtr.Zero)
{
throw new NullReferenceException(String.Format("Error: Unable to create capture from camera {0}", camIndex));
}
}
public virtual bool Retrieve(IOutputArray outputArray)
{
if (FlipType == FlipType.None)
{
var ptr = CvInvokeRaspiCamCV.cvQueryFrame(_ptr);
using (Mat m = CvInvoke.CvArrToMat(ptr))
{
m.CopyTo(outputArray);
}
return(true);
}
else
{
using (Mat tmp = new Mat())
{
var ptr = CvInvokeRaspiCamCV.cvQueryFrame(Ptr);
var managedImage = Image <Bgr, Byte> .FromIplImagePtr(ptr);
managedImage.Mat.CopyTo(tmp);
CvInvoke.Flip(tmp, outputArray, FlipType);
return(true);
}
}
}
private void InitCapture(int camIndex, PiCameraConfig config)
{
try
{
if (config.Width == 0)
{
_ptr = CvInvokeRaspiCamCV.cvCreateCameraCapture(camIndex);
}
else
{
Log.InfoFormat("Requesting capture config {0}", config);
_ptr = CvInvokeRaspiCamCV.cvCreateCameraCapture2(camIndex, ref config);
}
}
catch (DllNotFoundException e)
{
Log.Fatal("Are you running with the solution configuration matched to the right OS? or missing libraspicamcv.so?", e);
throw;
}
if (_ptr == IntPtr.Zero)
{
throw new NullReferenceException($"Error: Unable to create capture from camera #{camIndex}");
}
}
/// <summary>
/// Release the resource for this capture
/// </summary>
protected override void DisposeObject()
{
Stop();
CvInvokeRaspiCamCV.cvReleaseCapture(ref _ptr);
}
public double GetCaptureProperty(CapProp index)
{
return(CvInvokeRaspiCamCV.cvGetCaptureProperty(_ptr, (int)index));
}