public static string GetFullAttributeName(ImaqdxSessionHandle session, string partialName)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(partialName != null, "The partialName parameter cannot be null.");
IntPtr stringPtr = IntPtr.Zero;
try
{
int status = NiImaqdxDll.IMAQdxGetFullyQualifiedAttributeName(session, partialName, ref stringPtr);
if (status == -1074360305)
{
// This error is returned when the attribute is not supported by the camera
// In this case we do not want to return an exception
// Return an empty string to indicate the the attribute was not found
return(string.Empty);
}
ExceptionBuilder.CheckErrorAndThrow(status);
return(Marshal.PtrToStringAnsi(stringPtr));
}
finally
{
if (stringPtr != IntPtr.Zero)
{
int status = NiImaqdxDll.IMAQdxDispose(stringPtr);
ExceptionBuilder.CheckErrorAndThrow(status);
}
}
}
public static void Close(ImaqdxSessionHandle session)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
int status = NiImaqdxDll.IMAQdxCloseCamera(session);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static void WriteRegister(ImaqdxSessionHandle session, ulong offset, uint value)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
int status = NiImaqdxDll.IMAQdxWriteRegister(session, (uint)offset, value);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static void ReadAttributesFromCameraFile(ImaqdxSessionHandle session)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
int status = NiImaqdxDll.IMAQdxReadAttributes(session, null);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static void InstallPnpEventHandler(ImaqdxSessionHandle session, ImaqdxPnpEvent pnpEvent, ImaqdxPnpEventHandler callback)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(callback != null, "The callback parameter cannot be null.");
int status = NiImaqdxDll.IMAQdxRegisterPnpEvent(session, pnpEvent, callback, IntPtr.Zero);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static void InstallImageAcquiredEventHandler(ImaqdxSessionHandle session, ImaqdxFrameDoneEventHandler callback)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(callback != null, "The callback parameter cannot be null.");
int status = NiImaqdxDll.IMAQdxRegisterFrameDoneEvent(session, DefaultBufferInterval, callback, IntPtr.Zero);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static void Snap(ImaqdxSessionHandle session, VisionImage image)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(image != null, "The image parameter cannot be null.");
int status = NiImaqdxDll.IMAQdxSnap(session, image._image);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static void WriteMemory(ImaqdxSessionHandle session, ulong offset, byte[] values)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(values != null, "The values parameter cannot be null.");
int status = NiImaqdxDll.IMAQdxWriteMemory(session, (uint)offset, values, (uint)values.Length);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static void WriteAttributesToFile(ImaqdxSessionHandle session, string fullPath)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(fullPath != null, "The fullPath parameter cannot be null.");
int status = NiImaqdxDll.IMAQdxWriteAttributes(session, fullPath);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static void SetAttribute(ImaqdxSessionHandle session, string name, string value)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(name != null, "The name parameter cannot be null.");
int status = NiImaqdxDll.IMAQdxSetAttribute(session, name, ImaqdxAttributeType.String, value);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static void ConfigureAcquisition(ImaqdxSessionHandle session, ImaqdxAcquisitionType acquisitionType, int bufferCount)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(bufferCount > 0, "The bufferCount parameter must be greater than zero.");
bool isContinuous = (acquisitionType == ImaqdxAcquisitionType.Continuous);
int status = NiImaqdxDll.IMAQdxConfigureAcquisition(session, Convert.ToUInt32(isContinuous), (uint)bufferCount);
ExceptionBuilder.CheckErrorAndThrow(status);
}
private static void CreateImageDataArray(ImaqdxSessionHandle session, ref byte[] data)
{
uint bufferSize;
int status = NiImaqdxDll.IMAQdxGetRawBufferSize(session, out bufferSize);
ExceptionBuilder.CheckErrorAndThrow(status);
if (data == null || data.Length != bufferSize)
{
data = new byte[bufferSize];
}
}
public static uint GetImage(ImaqdxSessionHandle session, ImaqdxBufferNumberMode bufferNumberMode, VisionImage image)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(image != null, "The image parameter cannot be null.");
uint actualBufferNumber;
int status = NiImaqdxDll.IMAQdxGetImage(session, image._image, bufferNumberMode, (uint)0, out actualBufferNumber);
ExceptionBuilder.CheckErrorAndThrow(status);
return(actualBufferNumber);
}
public static string GetAttributeUnits(ImaqdxSessionHandle session, string name)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(name != null, "The name parameter cannot be null.");
string units;
int status = NiImaqdxDll.IMAQdxGetAttributeUnitsCW(session, name, out units);
ExceptionBuilder.CheckErrorAndThrow(status);
return(units == null ? string.Empty : units);
}
public static uint Grab(ImaqdxSessionHandle session, VisionImage image, bool waitForNextBuffer)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(image != null, "The image parameter cannot be null.");
uint actualBufferNumber;
int status = NiImaqdxDll.IMAQdxGrab(session, image._image, Convert.ToUInt32(waitForNextBuffer), out actualBufferNumber);
ExceptionBuilder.CheckErrorAndThrow(status);
return(actualBufferNumber);
}
public static ImaqdxAttributeVisibility GetAttributeVisibility(ImaqdxSessionHandle session, string name)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(name != null, "The name parameter cannot be null.");
ImaqdxAttributeVisibility visibility;
int status = NiImaqdxDll.IMAQdxGetAttributeVisibility(session, name, out visibility);
ExceptionBuilder.CheckErrorAndThrow(status);
return(visibility);
}
public static bool GetIsAttributeWritable(ImaqdxSessionHandle session, string name)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(name != null, "The name parameter cannot be null.");
uint writable;
int status = NiImaqdxDll.IMAQdxIsAttributeWritable(session, name, out writable);
ExceptionBuilder.CheckErrorAndThrow(status);
return(Convert.ToBoolean(writable));
}
public static void GetAttribute(ImaqdxSessionHandle session, string name, out string value)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(name != null, "The name parameter cannot be null.");
object objectValue;
int status = NiImaqdxDll.IMAQdxGetAttributeCW(session, name, ImaqdxAttributeType.String, out objectValue);
ExceptionBuilder.CheckErrorAndThrow(status);
value = (objectValue == null ? string.Empty : (string)objectValue);
}
public static void GetAttribute(ImaqdxSessionHandle session, string name, out bool value)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(name != null, "The name parameter cannot be null.");
byte byteValue;
int status = NiImaqdxDll.IMAQdxGetAttribute(session, name, ImaqdxAttributeType.Boolean, out byteValue);
ExceptionBuilder.CheckErrorAndThrow(status);
value = Convert.ToBoolean(byteValue);
}
public static void GetAttribute(ImaqdxSessionHandle session, string name, out ImaqdxEnumAttributeItem value)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(name != null, "The name parameter cannot be null.");
ImaqdxEnumItem enumItemValue;
int status = NiImaqdxDll.IMAQdxGetAttribute(session, name, ImaqdxAttributeType.Enum, out enumItemValue);
ExceptionBuilder.CheckErrorAndThrow(status);
value = new ImaqdxEnumAttributeItem(enumItemValue);
}
public static byte[] ReadMemory(ImaqdxSessionHandle session, ulong offset, int count)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(count > 0, "The count parameter must be greater than zero.");
byte[] values = new byte[count];
int status = NiImaqdxDll.IMAQdxReadMemory(session, (uint)offset, values, (uint)count);
ExceptionBuilder.CheckErrorAndThrow(status);
return(values);
}
public static uint GetImageData(ImaqdxSessionHandle session, ImaqdxBufferNumberMode bufferNumberMode, ref byte[] data)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
CreateImageDataArray(session, ref data);
uint actualBufferNumber;
int status = NiImaqdxDll.IMAQdxGetImageData(session, data, (uint)data.Length, bufferNumberMode, (uint)0, out actualBufferNumber);
ExceptionBuilder.CheckErrorAndThrow(status);
return(actualBufferNumber);
}
public static ImaqdxAttributeInformation[] EnumeratePrivateAttributes(ImaqdxSessionHandle session)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
uint count;
int status = NiImaqdxDll.IMAQdxEnumerateAttributes2(session, null, out count, "", PrivateVisibility);
ExceptionBuilder.CheckErrorAndThrow(status);
ImaqdxAttributeInformation[] attributeInfoArray = new ImaqdxAttributeInformation[count];
status = NiImaqdxDll.IMAQdxEnumerateAttributes2(session, attributeInfoArray, out count, "", PrivateVisibility);
ExceptionBuilder.CheckErrorAndThrow(status);
return(attributeInfoArray);
}
public static void Sequence(ImaqdxSessionHandle session, VisionImage[] images)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(images != null, "The images parameter cannot be null.");
IntPtr[] imagePtrs = new IntPtr[images.Length];
for (int i = 0; i < images.Length; i++)
{
imagePtrs[i] = images[i]._image;
}
int status = NiImaqdxDll.IMAQdxSequence(session, imagePtrs, (uint)imagePtrs.Length);
ExceptionBuilder.CheckErrorAndThrow(status);
}
public static ImaqdxEnumAttributeItem[] EnumerateAttributeValues(ImaqdxSessionHandle session, string name)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
Debug.Assert(name != null, "The name parameter cannot be null.");
uint count;
int status = NiImaqdxDll.IMAQdxEnumerateAttributeValues(session, name, null, out count);
ExceptionBuilder.CheckErrorAndThrow(status);
ImaqdxEnumItem[] enumItemArray = new ImaqdxEnumItem[count];
status = NiImaqdxDll.IMAQdxEnumerateAttributeValues(session, name, enumItemArray, out count);
ExceptionBuilder.CheckErrorAndThrow(status);
ImaqdxEnumAttributeItem[] enumItems = new ImaqdxEnumAttributeItem[count];
for (int i = 0; i < count; i++)
{
enumItems[i] = new ImaqdxEnumAttributeItem(enumItemArray[i]);
}
return(enumItems);
}
public static string WriteAttributesToString(ImaqdxSessionHandle session)
{
Debug.Assert(session != null, "The session parameter cannot be null.");
Debug.Assert(!session.IsInvalid, "The session parameter must be a valid handle.");
IntPtr stringPtr = IntPtr.Zero;
try
{
int status = NiImaqdxDll.IMAQdxWriteAttributesToString(session, ref stringPtr);
ExceptionBuilder.CheckErrorAndThrow(status);
string attributesString = Marshal.PtrToStringAnsi(stringPtr);
return(attributesString == null ? string.Empty : attributesString);
}
finally
{
if (stringPtr != IntPtr.Zero)
{
int status = NiImaqdxDll.IMAQdxDispose(stringPtr);
ExceptionBuilder.CheckErrorAndThrow(status);
}
}
}
public static extern int IMAQdxGetAttributeMaximum(ImaqdxSessionHandle id, string name, ImaqdxAttributeType type, out uint val);
public static extern int IMAQdxIsAttributeWritable(ImaqdxSessionHandle id, string name, out uint writable);
public static extern int IMAQdxGetAttributeVisibility(ImaqdxSessionHandle id, string name, out ImaqdxAttributeVisibility visibility);
public static extern int IMAQdxGetAttributeUnitsCW(ImaqdxSessionHandle id, string name, [MarshalAs(UnmanagedType.BStr)] out string units);
