References ▼
Converts the information in an ICCTAG_PARAMETRIC_CURVE_TYPE structure into one buffer of sequential bytes.
#include "ltwrappr.h"
L_INT LICCProfile::ConvertParametricCurveTypeToBuffer(pData, pIccTagParametricCurveType)
Pointer to a buffer to be updated with the converted information as one buffer of sequential bytes.
Pointer to an ICCTAG_PARAMETRIC_CURVE_TYPE structure that contains the information to be converted into one buffer of sequential data.
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
The pData pointer must be allocated by the user. Its size must be equal to the size in bytes of the structure pointed to by pIccTagParametricCurveType parameter; otherwise an error may occur and corrupted data will return.
The size of pData buffer can be calculated as follows: 4 + 4 + 2 + 2 + 4 * number of parameters retrieved by calling the LICCProfile::GetParametricCurveNumberOfParameters function. For more information, refer to the ICC.1:2004-10 specification page 56 in the https://www.color.org/index.xalter website.
This example converts an ICCTAG_PARAMETRIC_CURVE_TYPE structure into a buffer
void FillIccParametricCurveType(ICCTAG_PARAMETRIC_CURVE_TYPE * piccParametricCurveType){LICCProfile ICCProfile;// get the number of parameters for our functionL_INT numOfParameters = ICCProfile.GetParametricCurveNumberOfParameters (Func4Bytes);// create the IccParametricCurve classpiccParametricCurveType->ParametricCurve.uFunctionType = Func4Bytes;// since we know that we will have 1 parameter for our function,// we will fill it directly, define the function parameterspiccParametricCurveType->ParametricCurve.pParameters = (L_INT *)GlobalAlloc(GPTR, numOfParameters * sizeof(L_INT));piccParametricCurveType->ParametricCurve.pParameters [0] = (int) LICCProfile::ConvertDoubleTo2bFixed2bNumber(5.0);// define the tag basepiccParametricCurveType->tagBase.Signature = ParametricCurveTypeSig;}L_INT LICCProfile_ConvertParametricCurveTypeToBufferExample(){L_INT nRet = FAILURE;LICCProfile ICCProfile;/* This example converts an ICCTAG_CURVE_TYPE structure into a buffer */ICCTAG_PARAMETRIC_CURVE_TYPE iccParametricCurveType;L_UCHAR * pData;L_INT nDataSize;// fill the parametric curve type tagmemset(&iccParametricCurveType, 0 ,sizeof(ICCTAG_PARAMETRIC_CURVE_TYPE));FillIccParametricCurveType(&iccParametricCurveType);// calculate the data sizenDataSize = 4 + 4 + 2 + 2 + 4 * ICCProfile.GetParametricCurveNumberOfParameters ((ICCFUNCTIONTYPE)iccParametricCurveType.ParametricCurve.uFunctionType);// then allocate the destination data pointerpData = (L_UCHAR *) GlobalAlloc(GPTR, nDataSize * sizeof(L_UCHAR));if (pData == NULL){GlobalFree(iccParametricCurveType.ParametricCurve.pParameters);return nRet;}else{// now convert it into buffernRet = ICCProfile.ConvertParametricCurveTypeToBuffer(pData, &iccParametricCurveType);GlobalFree(iccParametricCurveType.ParametricCurve.pParameters);GlobalFree(pData);return nRet;}}