Exiv2::Internal::TiffHeaderBase Class Reference

Abstract base class defining the interface of an image header. Used internally by classes for TIFF-based images. Default implementation is for the regular TIFF header. More...

#include <tiffimage_int.hpp>

Inheritance diagram for Exiv2::Internal::TiffHeaderBase:

[legend]List of all members.

Public Member Functions
Creators
	TiffHeaderBase (uint16_t tag, uint32_t size, ByteOrder byteOrder, uint32_t offset)
	Constructor taking tag, size and default byteOrder and offset.
virtual	~TiffHeaderBase ()=0
	Virtual destructor.
Manipulators
virtual bool	read (const byte *pData, uint32_t size)
	Read the image header from a data buffer. Return false if the data buffer does not contain an image header of the expected format, else true.
virtual void	setByteOrder (ByteOrder byteOrder)
	Set the byte order.
virtual void	setOffset (uint32_t offset)
	Set the offset to the start of the root directory.
Accessors
virtual uint32_t	write (Blob &blob) const
	Write the image header to the binary image blob. This method appends to the blob.
virtual void	print (std::ostream &os, const std::string &prefix="") const
	Print debug info for the image header to os.
virtual ByteOrder	byteOrder () const
	Return the byte order (little or big endian).
virtual uint32_t	offset () const
	Return the offset to the start of the root directory.
virtual uint32_t	size () const
	Return the size (in bytes) of the image header.
virtual uint16_t	tag () const
	Return the tag value (magic number) which identifies the buffer as TIFF data.

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Detailed Description

Abstract base class defining the interface of an image header. Used internally by classes for TIFF-based images. Default implementation is for the regular TIFF header.

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Member Function Documentation

void Exiv2::Internal::TiffHeaderBase::print (  std::ostream &  os, const std::string &  prefix = "" )  const [virtual]

Print debug info for the image header to os. Parameters: os  Output stream to write to. prefix  Prefix to be written before each line of output.

bool Exiv2::Internal::TiffHeaderBase::read (  const byte *  pData, uint32_t  size )  [virtual]

Read the image header from a data buffer. Return false if the data buffer does not contain an image header of the expected format, else true. Parameters: pData  Pointer to the data buffer. size  Number of bytes in the data buffer. Returns: True if the TIFF header was read successfully. False if the data buffer does not contain a valid TIFF header. Reimplemented in Exiv2::Internal::Cr2Header, and Exiv2::Internal::OrfHeader.

uint32_t Exiv2::Internal::TiffHeaderBase::write (  Blob &  blob  )  const [virtual]

Write the image header to the binary image blob. This method appends to the blob. Parameters: blob  Binary image to add to. Returns: Number of bytes written. Reimplemented in Exiv2::Internal::Cr2Header, Exiv2::Internal::OrfHeader, and Exiv2::Internal::Rw2Header.

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

• tiffimage_int.hpp
• tiffimage.cpp

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