Error Handling

cvbres_t error codes and helper macros. More...

Macros
#define	CVC_ERROR(a)   ((a) != 0 ? (static_cast<cvbres_t>(a)) | static_cast<cvbres_t>(0x80000000) : (a))
#define	CVC_ERROR_FROM_HRES(hr)   ((hr) & 0x7FFFFFFF)

Enumerations
enum	CVC_ERROR_CODES {   CVC_E_OK = 0 , CVC_E_ERROR = 1 , CVC_E_PARAMETER = 2 , CVC_E_FILEIO = 3 ,   CVC_E_TIMEOUT = 4 , CVC_E_MEMORY = 5 , CVC_E_INVALIDPLANE = 6 , CVC_E_UNSUPPORTEDDATATYPE = 7 ,   CVC_E_INVALIDCAMERAPORT = 8 , CVC_E_BOARDSELECT = 9 , CVC_E_INVALIDTRIGGERMODE = 10 , CVC_E_PROPERTYREAD = 11 ,   CVC_E_PROPERTYWRITE = 12 , CVC_E_INVALIDPORT = 13 , CVC_E_PORTREAD = 14 , CVC_E_PORTWRITE = 15 ,   CVC_E_NOIMAGE = 16 , CVC_E_NOINTERFACE = 17 , CVC_E_BUSY = 18 , CVC_E_NOTSUPPORTED = 19 ,   CVC_E_GRABABORTED = 20 , CVC_E_NOPIXELLIST = 21 , CVC_E_NOTENOUGHDATA = 22 , CVC_E_NOTRANSFORMATION = 23 ,   CVC_E_LINEAR_ONLY = 24 , CVC_E_DIVISIONBYZERO = 25 , CVC_E_INVALIDDIMENSION = 26 , CVC_E_INVALIDCOLORMODEL = 27 ,   CVC_E_INVALIDDATATYPE = 28 , CVC_E_WRONGOBJECT = 29 , CVC_E_NOTREADY = 30 , CVC_E_NOANGLE = 31 ,   CVC_E_NOVECTOR2D = 32 , CVC_E_NOLINE2D = 33 , CVC_E_VECTOR2D_ZERO_LENGTH = 34 , CVC_E_VECTORS_IDENTICAL = 35 ,   CVC_E_LINE2D_VERTICAL = 36 , CVC_E_LINE2D_HORIZONTAL = 37 , CVC_E_NOARGUMENT = 38 , CVC_E_LINE2D_UNDEFINED = 39 ,   CVC_E_NOINTERSECTION = 40 , CVC_E_NOCLIPPING = 41 , CVC_E_NOTENOUGHLINES = 42 , CVC_E_OVERFLOW = 43 ,   CVC_E_NOCIRCLE = 44 , CVC_E_ACCESS = 45 , CVC_E_NOTPRESENT = 46 , CVC_E_UNSUPPORTEDFEATURE = 47 ,   CVC_E_INVALIDINDEX = 48 , CVC_E_NOOVERLAY = 49 , CVC_E_INVALIDSTATE = 50 , CVC_E_EMPTYRESULT = 51 }
	Error codes returned by CVB functions. More...
enum	CVC_WARNINGS { CVC_W_WARNING = 1 , CVC_W_X86ASM_FUNCTION = 2 , CVC_W_NOTENOUGHPIXELS = 3 }

Detailed Description

cvbres_t error codes and helper macros.

Macro Definition Documentation

CVC_ERROR

#define CVC_ERROR

(

a

)

((a) != 0 ? (static_cast<cvbres_t>(a)) | static_cast<cvbres_t>(0x80000000) : (a))

Creates a cvbres_t error code from CVC_ERROR_CODES entry.

CVC_ERROR_FROM_HRES

#define CVC_ERROR_FROM_HRES

(

hr

)

((hr) & 0x7FFFFFFF)

Extracts the error entry from a cvbres_t error code as CVC_ERROR_CODES.

Enumeration Type Documentation

CVC_ERROR_CODES

enum CVC_ERROR_CODES

Error codes returned by CVB functions.

Note

These error codes are only the lowermost bits of a 32 bit value whose highest bit has been set to 1 to indicate an error. Thus, every negative return value in CVB functions that does return a value of type cvbres_t indicates an error condition, whereas positive values or zero indicate success.

So in order to get from the cvbres_t return value to one of the enumerated values below, you will need to set the uppermost bit of the cvbres_t to zero (for example by using the CVC_ERROR_FROM_HRES macro).

Enumerator
CVC_E_OK	No Error occurred.
CVC_E_ERROR	An unspecified error occurred for which no further information is available.
CVC_E_PARAMETER	A function was called with an invalid parameter value for one of the function's arguments.
CVC_E_FILEIO	An error occurred during a File I/O operation (e.g. while loading/saving data from/to a file).
CVC_E_TIMEOUT	A timeout occurred in an asynchronous function call.
CVC_E_MEMORY	The allocation of a block of memory failed, typically because the amount of memory available to the application was insufficient for the operation at hand.
CVC_E_INVALIDPLANE	A plane index was specified that was either negative or bigger than or equal to the number of planes in the image.
CVC_E_UNSUPPORTEDDATATYPE	The data type of the input image is not supported by the function that has been called.
CVC_E_INVALIDCAMERAPORT	An attempt to switch to an invalid/unavailable camera port was made.
CVC_E_BOARDSELECT	An attempt to switch to an invalid/unavailable board was made.
CVC_E_INVALIDTRIGGERMODE	An attempt to select and invalid/unsupported trigger mode was made.
CVC_E_PROPERTYREAD	An attempt to read a property was unsuccessful, either because the property does not exist or because the device or property is in a state that prevents the property from being read.
CVC_E_PROPERTYWRITE	An attempt to write a property was unsuccessful, either because the property does not exist or because the device or property is in a state that prevents the property from being written.
CVC_E_INVALIDPORT	An invalid/unavailable port was selected.
CVC_E_PORTREAD	A port read operation failed.
CVC_E_PORTWRITE	A port write operation failed.
CVC_E_NOIMAGE	The handle to at least one of the input images does not point to a valid image.
CVC_E_NOINTERFACE	The input image object does not support the interface required for this operation.
CVC_E_BUSY	The operation failed because the hardware is not in a state where it can handle that operation.
CVC_E_NOTSUPPORTED	The requested feature is not supported.
CVC_E_GRABABORTED	The current grab operation was aborted.
CVC_E_NOPIXELLIST	At least one of the input handles does not point to a valid pixel list.
CVC_E_NOTENOUGHDATA	The amount of input data is insufficient for the requested operation.
CVC_E_NOTRANSFORMATION	The object handle that was passed to the function does not point to a valid non linear transformation object.
CVC_E_LINEAR_ONLY	The function only works on images with a linear VPAT layout.
CVC_E_DIVISIONBYZERO	A division by zero was attempted.
CVC_E_INVALIDDIMENSION	An invalid number of planes was specified.
CVC_E_INVALIDCOLORMODEL	An invalid/undefined color model mode has been passed to the function.
CVC_E_INVALIDDATATYPE	An invalid data type descriptor has been passed to the function.
CVC_E_WRONGOBJECT	At least one of the input handles points to the wrong type of object.
CVC_E_NOTREADY	The device or object is not ready to handle the requested operation.
CVC_E_NOANGLE	The input handle does not point to a valid angle object.
CVC_E_NOVECTOR2D	The input handle does not point to a valid 2D vector object.
CVC_E_NOLINE2D	The input handle does not point to a valid 2D line object.
CVC_E_VECTOR2D_ZERO_LENGTH	The operation failed because the vector passed to this function has length zero.
CVC_E_VECTORS_IDENTICAL	The function call failed because the input vectors to this operation are identical.
CVC_E_LINE2D_VERTICAL	The operation failed because the line object passed to it is vertical.
CVC_E_LINE2D_HORIZONTAL	The operation failed because the line object passed to it is horizontal.
CVC_E_NOARGUMENT	The argument cannot be calculated for a vector of length zero.
CVC_E_LINE2D_UNDEFINED	The operation failed because the input line 2D object has not yet been defined
CVC_E_NOINTERSECTION	The operation failed because the the line objects provided to the function do not intersect
CVC_E_NOCLIPPING	No clipping points available.
CVC_E_NOTENOUGHLINES	Not enough lines available to calculate the intersection reliably.
CVC_E_OVERFLOW	An input value was too big or did lead to a too big result.
CVC_E_NOCIRCLE	The input handle does not point to a valid 2D circle object.
CVC_E_ACCESS	A feature access failed.
CVC_E_NOTPRESENT	The requested operation failed because the selected feature is not present.
CVC_E_UNSUPPORTEDFEATURE	The requested feature is not supported (may happen if a specific interface implementation does not implement all functionality).
CVC_E_INVALIDINDEX	An index value in an indexed access exceeded its limits.
CVC_E_NOOVERLAY	An image object that is expected to have overlay bits does not have overlay bits (see DT_Overlay).
CVC_E_INVALIDSTATE	A state which does not allow to call a function.
CVC_E_EMPTYRESULT	The function returned an empty result, e.g. nullptr for an empty point cloud.

CVC_WARNINGS

enum CVC_WARNINGS

Execution was in principle successful, but result may not exactly be what the caller had in mind.

Enumerator
CVC_W_WARNING	A function did not complete as expected.
CVC_W_X86ASM_FUNCTION	A function has been called that will - in that form - only be available on platforms that support 32 bit x86 assembler.
CVC_W_NOTENOUGHPIXELS	A pixel list function completed successfully, but did not have enough data to perform its actual task.