/*

     File: CWorkingSpace.cpp

 Abstract: 

 RGB working space specifications.

  Version: 1.2

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 */

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#include <iostream>

#include <limits>

//---------------------------------------------------------------------------

#include "CEnums.h"

#include "CWorkingSpace.h"

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Constructor

//---------------------------------------------------------------------------

template <typename Type>

Color::WorkingSpace<Type>::WorkingSpace(const size_t nType)

{

    switch(nType)

    {

        case Color::Standard::kApple:

        {

            //---------------------------------------------------------------------------

            //

            // Generic Apple coordinates for red, green, and blue primaries, as well

            // D65 reference white point.

            //

            //---------------------------------------------------------------------------

            M[0] = Type(0.625);

            M[1] = Type(0.34);

            M[2] = Type(0.28);

            M[3] = Type(0.595);

            M[4] = Type(0.155);

            M[5] = Type(0.07);

            M[6] = Type(0.312713);

            M[7] = Type(0.329016);

            break;

        } // Apple

        case Color::Standard::kSMPTEC:

        {

            //---------------------------------------------------------------------------

            //

            // SMPTE-C is the current colour standard for broadcasting in America,

            // the old NTSC standard for primaries is no longer in wide use because

            // the primaries of the system have gradually shifted towards those of

            // the EBU (see section 6.2). In all other respects, SMPTE-C is the

            // same as NTSC.

            //

            // SMPTE-C coordinates for red, green, and blue primaries, as well D65

            // reference white point.

            //

            //---------------------------------------------------------------------------

            M[0] = Type(0.63);

            M[1] = Type(0.34);

            M[2] = Type(0.31);

            M[3] = Type(0.595);

            M[4] = Type(0.155);

            M[5] = Type(0.07);

            M[6] = Type(0.312713);

            M[7] = Type(0.329016);

            break;

        } // SMPTE-C

        case Color::Standard::ksRGB:

        {

            //---------------------------------------------------------------------------

            //

            // sRGB coordinates for red, green, and blue primaries, as well D65

            // reference white point.

            //

            //---------------------------------------------------------------------------

            M[0] = Type(0.64);

            M[1] = Type(0.33);

            M[2] = Type(0.30);

            M[3] = Type(0.60);

            M[4] = Type(0.15);

            M[5] = Type(0.06);

            M[6] = Type(0.312713);

            M[7] = Type(0.329016);

            break;

        } // sRGB

        case Color::Standard::kRec709:

        default:

        {

            //---------------------------------------------------------------------------

            //

            // CCIR/ITU-R BT/CIE Rec 709-5 (HDTV).

            //

            //---------------------------------------------------------------------------

            //

            // Rec 709 does not specify a gamma for the output device. Only the gamma

            // of the input device (0.45) is given. Typical CRTs have a gamma value

            // of 2.5, which yields an overall gamma of 1.125, within the 1.1 to 1.2

            // range usually used with the dim viewing environment assumed for

            // television.

            //

            //---------------------------------------------------------------------------

            //---------------------------------------------------------------------------

            //

            // Rec 709 coordinates for red, green, and blue primaries, as well D65

            // reference white point.

            //

            //---------------------------------------------------------------------------

            M[0] = Type(0.64);

            M[1] = Type(0.33);

            M[2] = Type(0.30);

            M[3] = Type(0.60);

            M[4] = Type(0.15);

            M[5] = Type(0.06);

            M[6] = Type(0.312713);

            M[7] = Type(0.329016);

            break;

        } // Rec 709

    } // switch

} // Constructor

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

template <typename Type>

Type &Color::WorkingSpace<Type>::operator()(const long nRow, const long nColumn)

{

    static Type nError = std::numeric_limits<Type>::has_quiet_NaN ? std::numeric_limits<Type>::quiet_NaN() : Type(0);

    if( ( nRow < 0 ) || ( nRow > 3 ) )

    {

        std::cerr

        << std::endl

        << ">> ERROR: Core Color - Working Space - WorkingSpace - Row index "

        << nRow

        << " is outside the row bounds of this matrix!"

        << std::endl;

        return nError;

    } // if

    if( ( nColumn < 0 ) || ( nColumn > 1 ) )

    {

        std::cerr

        << std::endl

        << ">> ERROR: Core Color - Working Space - WorkingSpace - Column index "

        << nColumn

        << " is outside the column bounds of this matrix!"

        << std::endl;

        return nError;

    } // if

    const long k = 2 * nRow + nColumn;

    return M[k];

} // WorkingSpace::operator()

//---------------------------------------------------------------------------

template <typename Type>

Type Color::WorkingSpace<Type>::operator()(const long nRow, const long nColumn) const

{

    Type nError = std::numeric_limits<Type>::has_quiet_NaN ? std::numeric_limits<Type>::quiet_NaN() : Type(0);

    if( ( nRow < 0 ) || ( nRow > 3 ) )

    {

        std::cerr

        << std::endl

        << ">> ERROR: Core Color - Working Space - WorkingSpace - Row index "

        << nRow

        << " is outside the row bounds of this matrix!"

        << std::endl;

        return nError;

    } // if

    if( ( nColumn < 0 ) || ( nColumn > 1 ) )

    {

        std::cerr

        << std::endl

        << ">> ERROR: Core Color - Working Space - WorkingSpace - Column index "

        << nColumn

        << " is outside the column bounds of this matrix!"

        << std::endl;

        return nError;

    } // if

    const long k = 2 * nRow + nColumn;

    return M[k];

} // WorkingSpace::operator()

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Destructor

//---------------------------------------------------------------------------

template <typename Type>

Color::WorkingSpace<Type>::~WorkingSpace()

{

    std::memset(M, 0x0, 8 * sizeof(Type));

} // Destructor

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Copy Constructors

//---------------------------------------------------------------------------

template <typename Type>

Color::WorkingSpace<Type>::WorkingSpace(const WorkingSpace<Type> &rWorkingSpace)

{

    std::memcpy(M, rWorkingSpace.M, 8 * sizeof(Type));

} // Copy Constructor

//---------------------------------------------------------------------------

template <typename Type>

Color::WorkingSpace<Type>::WorkingSpace( const WorkingSpace<Type> * const pWorkingSpace )

{

    if( pWorkingSpace != NULL )

    {

        std::memcpy(M, pWorkingSpace->M, 8 * sizeof(Type));

    } // if

} // Copy Constructor

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Assignment Operator

//---------------------------------------------------------------------------

template <typename Type>

Color::WorkingSpace<Type> &Color::WorkingSpace<Type>::operator=(const WorkingSpace<Type> &rWorkingSpace)

{

    if( this != &rWorkingSpace )

    {

        std::memcpy(M, rWorkingSpace.M, 8 * sizeof(Type));

    } // if

    return *this;

} // Assignment Operator

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Accessors

//---------------------------------------------------------------------------

template <typename Type>

const Math::Vector2<Type> Color::WorkingSpace<Type>::GetWorkingSpaceRed() const

{

    return Math::Vector2<Type>(M[0], M[1]);

} // GetWorkingSpaceRed

//---------------------------------------------------------------------------

template <typename Type>

const Math::Vector2<Type> Color::WorkingSpace<Type>::GetWorkingSpaceGreen() const

{

    return Math::Vector2<Type>(M[2], M[3]);

} // GetWorkingSpaceGreen

//---------------------------------------------------------------------------

template <typename Type>

const Math::Vector2<Type> Color::WorkingSpace<Type>::GetWorkingSpaceBlue() const

{

    return Math::Vector2<Type>(M[4], M[5]);

} // GetWorkingSpaceBlue

//---------------------------------------------------------------------------

template <typename Type>

const Math::Vector2<Type> Color::WorkingSpace<Type>::GetWorkingSpaceWhitePoint() const

{

    return Math::Vector2<Type>(M[6], M[7]);

} // GetWorkingSpaceWhitePoint

//---------------------------------------------------------------------------

template <typename Type>

const Type *Color::WorkingSpace<Type>::GetWorkingSpace() const

{

    return( &M[0] );

} // GetWorkingSpace

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Implementations - Template

//---------------------------------------------------------------------------

template class Color::WorkingSpace<float>;

template class Color::WorkingSpace<double>;

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------