CIccSampledCurveSegment Class Reference

Class: CIccSampledCurveSegment. More...

#include <IccMpeBasic.h>

Inheritance diagram for CIccSampledCurveSegment:

Collaboration diagram for CIccSampledCurveSegment:

Public Member Functions
virtual icFloatNumber	Apply (icFloatNumber v) const
	Name: CIccSampledCurveSegment::Apply.
virtual bool	Begin (CIccCurveSegment *pPrevSeg)
	Name: CIccSampledCurveSegment::Begin.
	CIccSampledCurveSegment (const CIccSampledCurveSegment &ITPC)
	Name: CIccSampledCurveSegment::CIccSampledCurveSegment.
	CIccSampledCurveSegment (icFloatNumber start, icFloatNumber end)
	Name: CIccSampledCurveSegment::CIccSampledCurveSegment.
virtual void	Describe (std::string &sDescription, int nVerboseness)
	Name: CIccSampledCurveSegment::Describe.
virtual const icChar *	GetClassName () const
virtual icFloatNumber *	GetSamples ()
virtual icUInt32Number	GetSize ()
virtual icCurveSegSignature	GetType () const
virtual CIccCurveSegment *	NewCopy () const
CIccSampledCurveSegment &	operator= (const CIccSampledCurveSegment &ParamCurveTag)
	Name: &CIccSampledCurveSegment::operator=.
virtual bool	Read (icUInt32Number size, CIccIO *pIO)
	Name: CIccSampledCurveSegment::Read.
virtual bool	SetSize (icUInt32Number nSize, bool bZeroAlloc=true)
	Name: CIccSampledCurveSegment::SetSize.
virtual icValidateStatus	Validate (std::string sigPath, std::string &sReport, const CIccTagMultiProcessElement *pMPE=NULL, const CIccProfile *pProfile=NULL) const
	Name: CIccSampledCurveSegment::Validate.
virtual bool	Write (CIccIO *pIO)
	Name: CIccSampledCurveSegment::Write.
virtual	~CIccSampledCurveSegment ()
	Name: CIccSampledCurveSegment::~CIccSampledCurveSegment.
Public Member Functions inherited from CIccCurveSegment
icFloatNumber	EndPoint ()
icFloatNumber	StartPoint ()
virtual	~CIccCurveSegment ()

Protected Attributes
icFloatNumber	m_last
icUInt32Number	m_nCount
icFloatNumber *	m_pSamples
icFloatNumber	m_range
Protected Attributes inherited from CIccCurveSegment
icFloatNumber	m_endPoint
icUInt32Number	m_nReserved
icFloatNumber	m_startPoint

Additional Inherited Members
Static Public Member Functions inherited from CIccCurveSegment
static CIccCurveSegment *	Create (icCurveSegSignature sig, icFloatNumber start, icFloatNumber end)
	Name: CIccCurveSegment::Create.

Detailed Description

Class: CIccSampledCurveSegment.

Purpose: The sampled curve segment

Definition at line 171 of file IccMpeBasic.h.

Constructor & Destructor Documentation

CIccSampledCurveSegment() [1/2]

CIccSampledCurveSegment::CIccSampledCurveSegment	(	icFloatNumber	start,
		icFloatNumber	end )

Name: CIccSampledCurveSegment::CIccSampledCurveSegment.

Purpose:

Args:

Return:

Definition at line 858 of file IccMpeBasic.cpp.

{
  m_nReserved = 0;
  m_startPoint = start;
  m_endPoint = end;
  m_range = end - start;
  m_nCount = 0;
  m_pSamples = 0;
  m_last = 0;
}

CIccSampledCurveSegment() [2/2]

CIccSampledCurveSegment::CIccSampledCurveSegment

(

const CIccSampledCurveSegment &

curve

)

Name: CIccSampledCurveSegment::CIccSampledCurveSegment.

Purpose:

Args:

Return:

Definition at line 879 of file IccMpeBasic.cpp.

{
  m_nReserved = curve.m_nReserved;
  m_startPoint = curve.m_startPoint;
  m_endPoint = curve.m_endPoint;
  m_range = m_endPoint - m_startPoint;
  m_nCount = curve.m_nCount;
  m_last = curve.m_last;
 
  if (m_nCount) {
    m_pSamples = (icFloatNumber*)malloc(m_nCount * sizeof(icFloatNumber));
    if (m_pSamples)
      memcpy(m_pSamples, curve.m_pSamples, m_nCount * sizeof(icFloatNumber));
    else
      m_nCount = 0;
  }
  else{
    m_pSamples = NULL;
  }
}

References CIccCurveSegment::m_endPoint, m_last, m_nCount, CIccCurveSegment::m_nReserved, m_pSamples, and CIccCurveSegment::m_startPoint.

~CIccSampledCurveSegment()

CIccSampledCurveSegment::~CIccSampledCurveSegment ( )

virtual

Name: CIccSampledCurveSegment::~CIccSampledCurveSegment.

Purpose:

Args:

Return:

Definition at line 943 of file IccMpeBasic.cpp.

{
  if (m_pSamples)
    free(m_pSamples);
}

Member Function Documentation

Apply()

icFloatNumber CIccSampledCurveSegment::Apply ( icFloatNumber v ) const

virtual

Name: CIccSampledCurveSegment::Apply.

Purpose:

Args:

Return:

Implements CIccCurveSegment.

Definition at line 1193 of file IccMpeBasic.cpp.

{
  if (v<m_startPoint)
    v=m_startPoint;
  else if (v>m_endPoint)
    v=m_endPoint;
 
  icFloatNumber pos = (v-m_startPoint)/m_range * m_last;
  icUInt32Number index = (icUInt32Number) pos;
  icFloatNumber remainder = pos - (icFloatNumber)index;
 
  if (remainder==0.0)
    return m_pSamples[index];
 
  return (icFloatNumber)((1.0-remainder)*m_pSamples[index] + remainder*m_pSamples[index+1]);
}

Begin()

bool CIccSampledCurveSegment::Begin ( CIccCurveSegment * pPrevSeg = NULL )

virtual

Name: CIccSampledCurveSegment::Begin.

Purpose:

Args:

Return:

Implements CIccCurveSegment.

Definition at line 1163 of file IccMpeBasic.cpp.

{
  if (m_nCount<2)
    return false;
 
  m_range = m_endPoint - m_startPoint;
  m_last = (icFloatNumber)(m_nCount - 1);
 
  if (m_endPoint-m_startPoint == 0.0)
    return false;
 
  if (!pPrevSeg)
    return false;
 
  //Set up interpolation from Application of last segment
  m_pSamples[0] = pPrevSeg->Apply(m_startPoint);
 
  return true;
}

Describe()

void CIccSampledCurveSegment::Describe ( std::string & sDescription, int nVerboseness )

virtual

Name: CIccSampledCurveSegment::Describe.

Purpose:

Args:

Return:

Implements CIccCurveSegment.

Definition at line 1004 of file IccMpeBasic.cpp.

{
  icChar buf[128];
 
  if (m_nCount<2) {
    sDescription += "Empty Segment [";
    if (m_startPoint==icMinFloat32Number)
      sDescription += "-Infinity, ";
    else {
    sprintf(buf, "%.8f, ", m_startPoint);
    sDescription += buf;
    }
    if (m_endPoint==icMaxFloat32Number)
      sDescription += "+Infinity";
    else {
    sprintf(buf, "%.8f", m_endPoint);
    sDescription += buf;
    }
 
    sprintf(buf, "]\n");
    sDescription += buf;
  }
  else {
    sDescription += "Sampled Segment [";
    if (m_startPoint==icMinFloat32Number)
      sDescription += "-Infinity, ";
    else {
    sprintf(buf, "%.8f, ", m_startPoint);
    sDescription += buf;
    }
    if (m_endPoint==icMaxFloat32Number)
      sDescription += "+Infinity";
    else {
    sprintf(buf, "%.8f", m_endPoint);
    sDescription += buf;
    }
    sprintf(buf, "]\n");
    sDescription += buf;
    sDescription += "IN  OUT\n";
 
    icUInt32Number i;
 
    icFloatNumber range = m_endPoint - m_startPoint;
    icFloatNumber last = (icFloatNumber)(m_nCount-1);
 
    for (i=1; i<m_nCount; i++) {
      sprintf(buf, "%.8f %.8f\n", m_startPoint + (icFloatNumber)i*range/last, m_pSamples[i]);
      sDescription += buf;
    }
  }
  sDescription += "\n";
}

References icMaxFloat32Number, and icMinFloat32Number.

GetClassName()

virtual const icChar * CIccSampledCurveSegment::GetClassName ( ) const

inlinevirtual

Implements CIccCurveSegment.

Definition at line 181 of file IccMpeBasic.h.

{ return "CIccSampledCurveSegment"; }

GetSamples()

virtual icFloatNumber * CIccSampledCurveSegment::GetSamples ( )

inlinevirtual

Definition at line 186 of file IccMpeBasic.h.

{ return m_pSamples; }

GetSize()

virtual icUInt32Number CIccSampledCurveSegment::GetSize ( )

inlinevirtual

Definition at line 184 of file IccMpeBasic.h.

{ return m_nCount; }

GetType()

virtual icCurveSegSignature CIccSampledCurveSegment::GetType ( ) const

inlinevirtual

Implements CIccCurveSegment.

Definition at line 180 of file IccMpeBasic.h.

{ return icSigSampledCurveSeg; }

References icSigSampledCurveSeg.

NewCopy()

virtual CIccCurveSegment * CIccSampledCurveSegment::NewCopy ( ) const

inlinevirtual

Implements CIccCurveSegment.

Definition at line 177 of file IccMpeBasic.h.

{ return new CIccSampledCurveSegment(*this);}

operator=()

CIccSampledCurveSegment & CIccSampledCurveSegment::operator=

(

const CIccSampledCurveSegment &

curve

)

Name: &CIccSampledCurveSegment::operator=.

Purpose:

Args:

Return:

Definition at line 910 of file IccMpeBasic.cpp.

{
  if (m_pSamples)
    free(m_pSamples);
 
  m_nReserved = curve.m_nReserved;
  m_startPoint = curve.m_startPoint;
  m_endPoint = curve.m_endPoint;
  m_nCount = curve.m_nCount;
 
  if (m_nCount) {
    m_pSamples = (icFloatNumber*)malloc(m_nCount * sizeof(icFloatNumber));
    if (m_pSamples)
      memcpy(m_pSamples, curve.m_pSamples, m_nCount * sizeof(icFloatNumber));
    else
      m_nCount = 0;
  }
  else {
    m_pSamples = NULL;
  }
  return (*this);
}

References CIccCurveSegment::m_endPoint, m_nCount, CIccCurveSegment::m_nReserved, m_pSamples, and CIccCurveSegment::m_startPoint.

Read()

bool CIccSampledCurveSegment::Read ( icUInt32Number size, CIccIO * pIO )

virtual

Name: CIccSampledCurveSegment::Read.

Purpose:

Args:

Return:

Implements CIccCurveSegment.

Definition at line 1067 of file IccMpeBasic.cpp.

{
  icCurveSegSignature sig;
 
  icUInt32Number headerSize = sizeof(icTagTypeSignature) + 
    sizeof(icUInt32Number) + 
    sizeof(icUInt32Number);
 
  if (headerSize > size)
    return false;
 
  if (!pIO) {
    return false;
  }
 
  if (!pIO->Read32(&sig))
    return false;
 
  if (!pIO->Read32(&m_nReserved))
    return false;
 
  if (!pIO->Read32(&m_nCount))
    return false;
 
  if (m_nCount > size - headerSize || m_nCount * sizeof(icFloat32Number) > size - headerSize)
    return false;
 
  //Reserve room for first point who's value comes from previous segment
  m_nCount++;
 
  if (!SetSize(m_nCount, false))
    return false;
 
  if (m_nCount) {
    if (pIO->ReadFloat32Float(m_pSamples+1, m_nCount-1)!=(icInt32Number)(m_nCount-1))
      return false;
  }
 
  //Initialize first point with zero.  Properly initialized during Begin()
  m_pSamples[0] = 0;
 
  return true;
}

References CIccIO::Read32(), CIccIO::ReadFloat32Float(), and sig.

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SetSize()

bool CIccSampledCurveSegment::SetSize ( icUInt32Number nCount, bool bZeroAlloc = true )

virtual

Name: CIccSampledCurveSegment::SetSize.

Purpose: Sets size of sampled lookup table. Previous data (if exists) is lost.

Args: nCount = number of elements in lut (must be >= 2). Note: the m_pSample[0] is initialized from the the previous segment. It is not saved as part of Write(), or loaded as part of Read(). It will be initialized during the call to Begin(), The actual count of elements written to the file will be nCount-1 bZeroAlloc = flag to decide if memory should be set to zero.

Return: true if allocation successful.

Definition at line 967 of file IccMpeBasic.cpp.

{
  if (!nCount) {
    if (m_pSamples)
      free(m_pSamples);
    m_pSamples = NULL;
    m_nCount = nCount;
    return true;
  }
 
  if (m_pSamples) {
    free(m_pSamples);
  }
 
  if (bZeroAlloc)
    m_pSamples = (icFloatNumber*)calloc(nCount, sizeof(icFloatNumber));
  else
    m_pSamples = (icFloatNumber*)malloc(nCount * sizeof(icFloatNumber));
 
  if (m_pSamples)
    m_nCount = nCount;
  else
    m_nCount = 0;
 
  return (m_pSamples != NULL);
}

Validate()

icValidateStatus CIccSampledCurveSegment::Validate ( std::string sigPath, std::string & sReport, const CIccTagMultiProcessElement * pMPE = NULL, const CIccProfile * pProfile = NULL ) const

virtual

Name: CIccSampledCurveSegment::Validate.

Purpose:

Args:

Return:

Implements CIccCurveSegment.

Definition at line 1220 of file IccMpeBasic.cpp.

{
  CIccInfo Info;
  std::string sSigPathName = Info.GetSigPathName(sigPath);
 
  icValidateStatus rv = icValidateOK;
  if (m_nReserved) {
    sReport += icMsgValidateWarning;
    sReport += sSigPathName;
    sReport += " sampled curve has non zero reserved data.\n";
    rv = icValidateWarning;
  }
 
  if (m_nCount<1) {
    sReport += icMsgValidateCriticalError;
    sReport += sSigPathName;
    sReport += " sampled curve has too few sample points.\n";
    rv = icMaxStatus(rv, icValidateCriticalError);
  }
  else if (m_endPoint-m_startPoint == 0.0) {
    sReport += icMsgValidateWarning;
    sReport += sSigPathName;
    sReport += " sampled curve has a range of zero.\n";
    rv = icMaxStatus(rv, icValidateWarning);
  }
 
  return rv;
}

References CIccInfo::GetSigPathName(), icMaxStatus(), icMsgValidateCriticalError, icMsgValidateWarning, icValidateCriticalError, icValidateOK, and icValidateWarning.

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Write()

bool CIccSampledCurveSegment::Write ( CIccIO * pIO )

virtual

Name: CIccSampledCurveSegment::Write.

Purpose:

Args:

Return:

Implements CIccCurveSegment.

Definition at line 1121 of file IccMpeBasic.cpp.

{
  icCurveSegSignature sig = GetType();
 
  if (!pIO)
    return false;
 
  if (!pIO->Write32(&sig))
    return false;
 
  if (!pIO->Write32(&m_nReserved))
    return false;
 
  icUInt32Number nCount;
 
  if (m_nCount)
    nCount = m_nCount -1;
  else
    nCount = 0;
 
  if (!pIO->Write32(&nCount))
    return false;
 
  //First point in samples is ONLY for interpolation (not saved)
  if (nCount) {
    if (pIO->WriteFloat32Float(m_pSamples+1, nCount)!=(icInt32Number)nCount)
      return false;
  }
 
  return true;
}

References sig, CIccIO::Write32(), and CIccIO::WriteFloat32Float().

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Member Data Documentation

m_last

icFloatNumber CIccSampledCurveSegment::m_last

protected

Definition at line 202 of file IccMpeBasic.h.

Referenced by CIccSampledCurveSegment().

m_nCount

icUInt32Number CIccSampledCurveSegment::m_nCount

protected

Definition at line 198 of file IccMpeBasic.h.

Referenced by CIccSampledCurveSegment(), and operator=().

m_pSamples

icFloatNumber* CIccSampledCurveSegment::m_pSamples

protected

Definition at line 199 of file IccMpeBasic.h.

Referenced by CIccSampledCurveSegment(), and operator=().

m_range

icFloatNumber CIccSampledCurveSegment::m_range

protected

Definition at line 201 of file IccMpeBasic.h.

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The documentation for this class was generated from the following files:

• IccProfLib/IccMpeBasic.h
• IccProfLib/IccMpeBasic.cpp