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openDAQ
Open data acquisition platform
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openDAQ
Open data acquisition platform
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Signal descriptor field that defines a scaling transformation, which should be applied to data carried by the signal's packets when read. More...
Inheritance diagram for IScaling: Collaboration diagram for IScaling:Signal descriptor field that defines a scaling transformation, which should be applied to data carried by the signal's packets when read.
Each scaling specifies its scalingType and parses the parameters accordingly. The parameters are to be interpreted and used as specified by each specific scaling type as detailed below.
Additionally, each Scaling object states is input and output data types. The inputDataType describes the raw data type of the signal value (that data is input into the scaling scaling), while the outputDataType should match the sample type of the signal's value descriptor.
Scaling objects implement the Struct methods internally and are Core type ctStruct.
Linear scaling parameters must have two entries:
The linear scaling output is calculated as follows: inputValue * scale + offset
Public Member Functions | |
| virtual ErrCode INTERFACE_FUNC | getInputSampleType (SampleType *type)=0 |
| Gets the scaling's input data type. More... | |
| virtual ErrCode INTERFACE_FUNC | getOutputSampleType (ScaledSampleType *type)=0 |
| Gets the scaling's output data type. More... | |
| virtual ErrCode INTERFACE_FUNC | getType (ScalingType *type)=0 |
| Gets the type of the scaling that determines how the scaling parameters should be interpreted and how the scaling should be calculated. More... | |
| virtual ErrCode INTERFACE_FUNC | getParameters (IDict **parameters)=0 |
| Gets the dictionary of parameters that are used to calculate the scaling in conjunction with the input data. More... | |
| Public Member Functions inherited from IBaseObject | |
| virtual ErrCode INTERFACE_FUNC | borrowInterface (const IntfID &intfID, void **obj) const =0 |
| Returns another interface which is supported by the object without incrementing the reference count. More... | |
| virtual ErrCode INTERFACE_FUNC | dispose ()=0 |
| Disposes all references held by the object. More... | |
| virtual ErrCode INTERFACE_FUNC | getHashCode (SizeT *hashCode)=0 |
| Returns hash code of the object. More... | |
| virtual ErrCode INTERFACE_FUNC | equals (IBaseObject *other, Bool *equal) const =0 |
| Compares object to another object for equality. More... | |
| virtual ErrCode INTERFACE_FUNC | toString (CharPtr *str)=0 |
| Returns a string representation of the object. More... | |
| Public Member Functions inherited from IUnknown | |
| virtual ErrCode INTERFACE_FUNC | queryInterface (const IntfID &intfID, void **obj)=0 |
| Returns another interface which is supported by the object and increments the reference count. More... | |
| virtual int INTERFACE_FUNC | addRef ()=0 |
| Increments the reference count for an interface on an object. More... | |
| virtual int INTERFACE_FUNC | releaseRef ()=0 |
| Decrements the reference count for an interface on an object. More... | |
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pure virtual |
Gets the scaling's input data type.
| [out] | type | The input data type |
The input data type corresponds to the raw values passed through the signal path in data packets.
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pure virtual |
Gets the scaling's output data type.
| [out] | type | The output data type |
The output data type corresponds to the sample type specified in the value descriptor of a signal, and is the type in which said signal's data should be read in after having the scaling applied to it.
Gets the dictionary of parameters that are used to calculate the scaling in conjunction with the input data.
| [out] | parameters | The dictionary of parameters. |
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pure virtual |
Gets the type of the scaling that determines how the scaling parameters should be interpreted and how the scaling should be calculated.
| [out] | type | The type of the scaling. |
1.8.17