References ▼
#include "ltkrn.h"
#include "ltclr.h"
L_LTCLR_API L_INT L_ClrSetConversionParams(ClrHandle, pParams)
Sets new conversion parameters.
Handle to an existing color conversion. This handle is obtained by calling the L_ClrInit function.
Pointer to a CONVERSION_PARAMS structure, this structure will describe the conversion properties.
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
If pParams is NULL, this function will fail. A valid color conversion handle is needed. To check the handle validity, use L_ClrIsValid.
Win32, x64.
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
L_INT ClrSetConversionParamsExample(L_UCHAR* pInput,L_UCHAR* pOutput,L_INT nWidth,L_INT nHeight){L_INT nRet;HANDLE ClrHandle; /* color Handle */CONVERSION_PARAMS convparams; /* conversion options *//* Conversion with options:The conversion will be done with the options specified in the convparams variable*//* set the convparams size */convparams.uStructSize = sizeof(CONVERSION_PARAMS);/* we want to use the built in ICC conversion method and built in conversion *//* use built in conversion and LEAD ICC Engine*/convparams.nMethod = USE_BUILTIN | USE_ICC;/* set the active conversion method */convparams.nActiveMethod = USE_BUILTIN;/* allocate a D50 white point option */convparams.pWpoint = (LPWHITEPOINT)malloc(sizeof(WHITEPOINT));/* D50 white point */convparams.pWpoint->nWhitePoint = CIELAB_D50;/* allocate a cmyk option */convparams.pCmykParams = (LPCMYK_PARAMS)malloc(sizeof(CMYK_PARAMS));convparams.pCmykParams->uStructSize = sizeof(CMYK_PARAMS);convparams.pCmykParams->nMask = CMYK_GCR;/* 17.5 % GCR value */convparams.pCmykParams->nGcr_level = 175;/* initialize the color conversion */nRet = L_ClrInit(&ClrHandle, CCS_CMYK, CCS_RGB, &convparams);if(nRet != SUCCESS)return nRet;/* convert the image buffer */nRet = L_ClrConvert(ClrHandle, /* conversion handle */pInput, /* input buffer */pOutput, /* output buffer */nWidth, /* pixels width */nHeight, /* pixels height */0, /* 0 bytes align */0); /* 0 bytes align */if(nRet != SUCCESS)return nRet;/* change the active method for conversion */convparams.nMethod = CHANGE_ACTIVE_METHOD;/* switch to ICC conversion method */convparams.nActiveMethod = USE_ICC;/* update the conversion state */nRet = L_ClrSetConversionParams(ClrHandle, &convparams);if(nRet != SUCCESS)return nRet;/* convert the image buffer */nRet = L_ClrConvert(ClrHandle, /* conversion handle */pInput, /* input buffer */pOutput, /* output buffer */nWidth, /* pixels width */nHeight, /* pixels height */0, /* 0 bytes align */0); /* 0 bytes align */if(nRet != SUCCESS)return nRet;/* free the conversion */nRet = L_ClrFree (ClrHandle);/* save the image *//*...*/free(convparams.pWpoint);free(convparams.pCmykParams);return nRet;}