sccolorspacedata_cmyka.h

#ifndef SCCOLORSPACEDATA_CMYKA_H
#define SCCOLORSPACEDATA_CMYKA_H

#include <cassert>
#include <climits>
#include <limits>
#include "sccolorprofile.h"
#include "sccolorspacedata.h"

template<typename T, eColorFormat COLORFORMAT>
class ScColorSpaceDataTempl_CMYKA : public ScColorSpaceData
{
protected:
    int m_cIndex;
    int m_mIndex;
    int m_yIndex;
    int m_kIndex;
    int m_aIndex;

public:
    ScColorSpaceDataTempl_CMYKA(ScColorProfile& profile);

    virtual uint alphaIndex(void) const { return m_aIndex; }
    virtual void flattenAlpha(void* dataIn, uint numElems) const;
};

template<typename T, eColorFormat COLORFORMAT>
ScColorSpaceDataTempl_CMYKA<T, COLORFORMAT>::ScColorSpaceDataTempl_CMYKA(ScColorProfile& profile)
{
    m_colorFormat = COLORFORMAT;
    m_profile     = profile;
    if (m_colorFormat == Format_CMYKA_8 || m_colorFormat == Format_CMYKA_16)
    {
        m_cIndex = 0;
        m_mIndex = 1;
        m_yIndex = 2;
        m_kIndex = 3;
        m_aIndex = 4;
    }
    else
    {
        assert(false);
    }
    if (m_profile)
    {
        assert(m_profile.colorSpace() == ColorSpace_Cmyk || m_profile.colorSpace() == ColorSpace_Cmy);
    }
};

template<typename T, eColorFormat COLORFORMAT>
void ScColorSpaceDataTempl_CMYKA<T, COLORFORMAT>::flattenAlpha(void* dataIn, uint numElems) const
{
    T* data   = ((T*) dataIn) + m_aIndex;
    T  nLimit = std::numeric_limits<T>::max();
    while (numElems > 0)
    {
        *data = nLimit;
        data += 5;
        --numElems;
    };
};

typedef ScColorSpaceDataTempl_CMYKA<unsigned char , Format_CMYKA_8>  ScColorSpaceData_CMYKA8;
typedef ScColorSpaceDataTempl_CMYKA<unsigned short, Format_CMYKA_16> ScColorSpaceData_CMYKA16;

#endif