LICCProfile::ConvertParametricCurveTypeToBuffer

#include "ltwrappr.h"

L_INT LICCProfile::ConvertParametricCurveTypeToBuffer(pData, pIccTagParametricCurveType)

L_UCHAR * pData;	pointer to a buffer
pICCTAG_PARAMETRIC_CURVE_TYPE pIccTagParametricCurveType;	pointer to a structure

Converts the information in an ICCTAG_PARAMETRIC_CURVE_TYPE structure into one buffer of sequential bytes.

Parameter	Description
pData	Pointer to a buffer to be updated with the converted information as one buffer of sequential bytes.
pIccTagParametricCurveType	Pointer to an ICCTAG_PARAMETRIC_CURVE_TYPE structure that contains the information to be converted into one buffer of sequential data.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

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 http://www.color.org/index.xalter website.

Required DLLs and Libraries

LTCLR

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:	LICCProfile::InitHeader, LICCProfile::Initialize, LICCProfile::SetCMMType, LICCProfile::SetColorSpace, LICCProfile::SetConnectionSpace, LICCProfile::SetCreator, LICCProfile::SetDateTime, LICCProfile::SetDeviceAttributes, LICCProfile::SetDeviceClass, LICCProfile::SetDevManufacturer, LICCProfile::SetDevModel, LICCProfile::SetFlags, LICCProfile::SetPrimaryPlatform, LICCProfile::SetRenderingIntent, LICCProfile::Convert2bFixed2bNumberToDouble, LICCProfile::CreateTagData, LICCProfile::DeleteTag, LICCProfile::ConvertDoubleTo2bFixed2bNumber, LICCProfile::FreeTagType, LICCProfile::GenerateFile, LICCProfile::GeneratePointer, LICCProfile::GetTagData, LICCProfile::GetTagTypeSig, LICCProfile::Save, LICCProfile::SetTagData, LICCProfile::Fill, LICCProfile::Load, LICCProfile::Free, LICCProfile::GetParametricCurveNumberOfParameters, LICCProfile::DoubleToU8Fixed8Number, LICCProfile::U8Fixed8NumberToDouble, LICCProfile::ConvertCLUTToBuffer, LICCProfile::ConvertCurveTypeToBuffer, LICCProfile::SetProfileId, Class Members
Topics:	Using ICC Profile Functions
	ICC Profile Functions: Tags
	ICC Profile Functions: Creating an ICC Profile

Example

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 function 
   L_INT numOfParameters = ICCProfile.GetParametricCurveNumberOfParameters (Func4Bytes); 
   // create the IccParametricCurve class 
   piccParametricCurveType->ParametricCurve.uFunctionType = Func4Bytes; 
   // since we know that we will have 1 parameter for our function, 
   // we will fill it directly, define the function parameters 
   piccParametricCurveType->ParametricCurve.pParameters = (L_INT *)GlobalAlloc(GPTR, numOfParameters * sizeof(L_INT)); 
   piccParametricCurveType->ParametricCurve.pParameters [0] = (int) LICCProfile::ConvertDoubleTo2bFixed2bNumber(5.0); 
   // define the tag base 
   piccParametricCurveType->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 tag 
   memset(&iccParametricCurveType, 0 ,sizeof(ICCTAG_PARAMETRIC_CURVE_TYPE)); 
   FillIccParametricCurveType(&iccParametricCurveType); 
   // calculate the data size 
   nDataSize = 4 + 4 + 2 + 2  +  4 * ICCProfile.GetParametricCurveNumberOfParameters ((ICCFUNCTIONTYPE)iccParametricCurveType.ParametricCurve.uFunctionType); 
   // then allocate the destination data pointer 
   pData = (L_UCHAR *) GlobalAlloc(GPTR, nDataSize * sizeof(L_UCHAR)); 
   if (pData == NULL) 
   { 
      GlobalFree(iccParametricCurveType.ParametricCurve.pParameters); 
      return nRet; 
   } 
   else 
   { 
      // now convert it into buffer 
      nRet = ICCProfile.ConvertParametricCurveTypeToBuffer(pData, &iccParametricCurveType); 
      GlobalFree(iccParametricCurveType.ParametricCurve.pParameters); 
      GlobalFree(pData); 
      return nRet; 
   } 
}

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