CIccMemIO Class Reference

Type: Class. More...

#include <IccIO.h>

Inheritance diagram for CIccMemIO:

Collaboration diagram for CIccMemIO:

Public Member Functions
bool	Alloc (icUInt32Number nSize, bool bWrite=false)
bool	Attach (icUInt8Number *pData, icUInt32Number nSize, bool bWrite=false)
	CIccMemIO ()
virtual void	Close ()
icUInt8Number *	GetData ()
virtual icInt32Number	GetLength ()
virtual icInt32Number	Read8 (void *pBuf, icInt32Number nNum=1)
virtual icInt32Number	Seek (icInt32Number nOffset, icSeekVal pos)
virtual icInt32Number	Tell ()
virtual icInt32Number	Write8 (void *pBuf, icInt32Number nNum=1)
virtual	~CIccMemIO ()
Public Member Functions inherited from CIccIO
bool	Align32 ()
	Write operation to make sure that filelength is evenly divisible by 4.
icInt32Number	Read16 (void *pBuf16, icInt32Number nNum=1)
icInt32Number	Read32 (void *pBuf32, icInt32Number nNum=1)
icInt32Number	Read64 (void *pBuf64, icInt32Number nNum=1)
icInt32Number	ReadFloat16Float (void *pBufFloat, icInt32Number nNum=1)
icInt32Number	ReadFloat32Float (void *pBufFloat, icInt32Number nNum=1)
icInt32Number	ReadLine (void *pBuf8, icInt32Number nNum=256)
icInt32Number	ReadUInt16Float (void *pBufFloat, icInt32Number nNum=1)
icInt32Number	ReadUInt8Float (void *pBufFloat, icInt32Number nNum=1)
bool	Sync32 (icUInt32Number nOffset=0)
	Operation to make sure read position is evenly divisible by 4.
icInt32Number	Write16 (void *pBuf16, icInt32Number nNum=1)
icInt32Number	Write32 (void *pBuf32, icInt32Number nNum=1)
icInt32Number	Write64 (void *pBuf64, icInt32Number nNum=1)
icInt32Number	WriteFloat16Float (void *pBuf16, icInt32Number nNum=1)
icInt32Number	WriteFloat32Float (void *pBufFloat, icInt32Number nNum=1)
icInt32Number	WriteUInt16Float (void *pBuf16, icInt32Number nNum=1)
icInt32Number	WriteUInt8Float (void *pBuf16, icInt32Number nNum=1)
virtual	~CIccIO ()

Protected Attributes
bool	m_bFreeData
icUInt32Number	m_nAvail
icUInt32Number	m_nPos
icUInt32Number	m_nSize
icUInt8Number *	m_pData

Detailed Description

Type: Class.

Purpose: Handles generic memory IO

Definition at line 216 of file IccIO.h.

Constructor & Destructor Documentation

CIccMemIO()

CIccMemIO::CIccMemIO

(

)

Definition at line 649 of file IccIO.cpp.

                     : CIccIO()
{
  m_pData = NULL;
  m_nSize = 0;
  m_nAvail = 0;
  m_nPos = 0;
 
  m_bFreeData = false;
}

References m_bFreeData, m_nAvail, m_nPos, m_nSize, and m_pData.

~CIccMemIO()

CIccMemIO::~CIccMemIO ( )

virtual

Definition at line 659 of file IccIO.cpp.

{
  Close();
}

References Close().

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Member Function Documentation

Alloc()

bool CIccMemIO::Alloc	(	icUInt32Number	nSize,
		bool	bWrite = false )

Definition at line 665 of file IccIO.cpp.

{
  if (m_pData)
    Close();
 
  icUInt8Number *pData = (icUInt8Number*)malloc(nSize);
 
  if (!pData)
    return false;
 
  if (!Attach(pData, nSize, bWrite)) {
    free(pData);
    return false;
  }
 
  m_bFreeData = true;
 
  return true;
}

References Attach(), Close(), m_bFreeData, and m_pData.

Referenced by OpenProfile().

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Attach()

bool CIccMemIO::Attach	(	icUInt8Number *	pData,
		icUInt32Number	nSize,
		bool	bWrite = false )

Definition at line 686 of file IccIO.cpp.

{
  if (!pData)
    return false;
 
  if (m_pData)
   Close();
 
  m_pData = pData;
  m_nPos = 0;
 
  if (bWrite) {
    m_nAvail = nSize;
    m_nSize = 0;
  }
  else {
    m_nAvail = m_nSize = nSize;
  }
 
  return true;
}

References Close(), m_nAvail, m_nPos, m_nSize, and m_pData.

Referenced by Alloc(), OpenIccProfile(), CIccTagProfileSequenceId::ParseMem(), CIccTagStruct::ParseMem(), and ReadIccProfile().

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Close()

void CIccMemIO::Close ( )

virtual

Reimplemented from CIccIO.

Definition at line 709 of file IccIO.cpp.

{
  if (m_pData) {
    if (m_bFreeData) {
      free(m_pData);
 
      m_bFreeData = false;
    }
    m_pData = NULL;
  }
}

References m_bFreeData, and m_pData.

Referenced by Alloc(), Attach(), and ~CIccMemIO().

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GetData()

icUInt8Number * CIccMemIO::GetData ( )

inline

Definition at line 235 of file IccIO.h.

{ return m_pData; }

Referenced by MyTagDialog::MyTagDialog(), and OpenProfile().

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GetLength()

icInt32Number CIccMemIO::GetLength ( )

virtual

Reimplemented from CIccIO.

Definition at line 752 of file IccIO.cpp.

{
  if (!m_pData)
    return 0;
 
  return m_nSize;
}

References m_nSize, and m_pData.

Referenced by MyTagDialog::MyTagDialog().

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Read8()

icInt32Number CIccMemIO::Read8 ( void * pBuf, icInt32Number nNum = 1 )

virtual

Reimplemented from CIccIO.

Definition at line 722 of file IccIO.cpp.

{
  if (!m_pData)
    return 0;
  if (nNum > 0) {
      nNum = __min((icInt32Number) (m_nSize - m_nPos), nNum);
      memcpy(pBuf, m_pData + m_nPos, nNum);
      m_nPos += nNum;
  }
    return nNum;
}

References __min, m_nPos, m_nSize, and m_pData.

Seek()

icInt32Number CIccMemIO::Seek ( icInt32Number nOffset, icSeekVal pos )

virtual

Reimplemented from CIccIO.

Definition at line 761 of file IccIO.cpp.

{
  if (!m_pData)
    return -1;
 
  icInt32Number nPos;
  switch(pos) {
  case icSeekSet:
    nPos = nOffset;
    break;
  case icSeekCur:
    nPos = (icInt32Number)m_nPos + nOffset;
    break;
  case icSeekEnd:
    nPos = (icInt32Number)m_nSize + nOffset;
    break;
  default:
    nPos = 0;
    break;
  }
 
  if (nPos < 0)
    return -1;
 
  icUInt32Number uPos = (icUInt32Number)nPos;
 
  if (uPos > m_nSize && m_nSize != m_nAvail && uPos <=m_nAvail) {
    memset(m_pData+m_nSize, 0, (icInt32Number)(uPos - m_nSize));
    m_nSize = uPos;
  }
  if (uPos > m_nSize)
    return -1;
 
  m_nPos = uPos;
 
  return nPos;
}

References icSeekCur, icSeekEnd, icSeekSet, m_nAvail, m_nPos, m_nSize, and m_pData.

Tell()

icInt32Number CIccMemIO::Tell ( )

virtual

Reimplemented from CIccIO.

Definition at line 800 of file IccIO.cpp.

{
  if (!m_pData)
    return -1;
 
  return (icInt32Number)m_nPos;
}

References m_nPos, and m_pData.

Write8()

icInt32Number CIccMemIO::Write8 ( void * pBuf, icInt32Number nNum = 1 )

virtual

Reimplemented from CIccIO.

Definition at line 735 of file IccIO.cpp.

{
  if (!m_pData)
    return 0;
 
  nNum = __min((icInt32Number)(m_nAvail-m_nPos), nNum);
 
  memcpy(m_pData + m_nPos, pBuf, nNum);
 
  m_nPos += nNum;
  if (m_nPos > m_nSize)
    m_nSize = m_nPos;
 
  return nNum;
}

References __min, m_nAvail, m_nPos, m_nSize, and m_pData.

Member Data Documentation

m_bFreeData

bool CIccMemIO::m_bFreeData

protected

Definition at line 243 of file IccIO.h.

Referenced by Alloc(), CIccMemIO(), and Close().

m_nAvail

icUInt32Number CIccMemIO::m_nAvail

protected

Definition at line 240 of file IccIO.h.

Referenced by Attach(), CIccMemIO(), Seek(), and Write8().

m_nPos

icUInt32Number CIccMemIO::m_nPos

protected

Definition at line 241 of file IccIO.h.

Referenced by Attach(), CIccMemIO(), Read8(), Seek(), Tell(), and Write8().

m_nSize

icUInt32Number CIccMemIO::m_nSize

protected

Definition at line 239 of file IccIO.h.

Referenced by Attach(), CIccMemIO(), GetLength(), Read8(), Seek(), and Write8().

m_pData

icUInt8Number* CIccMemIO::m_pData

protected

Definition at line 238 of file IccIO.h.

Referenced by Alloc(), Attach(), CIccMemIO(), Close(), GetLength(), Read8(), Seek(), Tell(), and Write8().

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

• IccProfLib/IccIO.h
• IccProfLib/IccIO.cpp