Exiv2::Internal::TiffParserWorker Class Reference

Stateless parser class for data in TIFF format. Images use this class to decode and encode TIFF-based data. More...

#include <tiffimage_int.hpp>

List of all members.

Static Public Member Functions
static ByteOrder	decode (ExifData &exifData, IptcData &iptcData, XmpData &xmpData, const byte *pData, uint32_t size, uint32_t root, FindDecoderFct findDecoderFct, TiffHeaderBase *pHeader=0)
	Decode TIFF metadata from a data buffer pData of length size into the provided metadata containers.
static WriteMethod	encode (BasicIo &io, const byte *pData, uint32_t size, const ExifData &exifData, const IptcData &iptcData, const XmpData &xmpData, uint32_t root, FindEncoderFct findEncoderFct, TiffHeaderBase *pHeader)
	Encode TIFF metadata from the metadata containers into a memory block blob.

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Detailed Description

Stateless parser class for data in TIFF format. Images use this class to decode and encode TIFF-based data.

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Member Function Documentation

ByteOrder Exiv2::Internal::TiffParserWorker::decode	(	ExifData &	exifData,
		IptcData &	iptcData,
		XmpData &	xmpData,
		const byte *	pData,
		uint32_t	size,
		uint32_t	root,
		FindDecoderFct	findDecoderFct,
		TiffHeaderBase *	pHeader = 0
	)			[static]

Decode TIFF metadata from a data buffer pData of length size into the provided metadata containers.

This is the entry point to access image data in TIFF format. The parser uses classes TiffHeader and the TiffComponent and TiffVisitor hierarchies.

Parameters:

exifData

Exif metadata container. Parameters: iptcData  IPTC metadata container. Parameters: xmpData  XMP metadata container. Parameters: pData  Pointer to the data buffer. Must point to data in TIFF format; no checks are performed. Parameters: size  Length of the data buffer. Parameters: root  Root tag of the TIFF tree for new TIFF components. Parameters: findDecoderFct  Function to access special decoding info. Parameters: pHeader  Optional pointer to a TIFF header. If not provided, a standard TIFF header is used. Returns: Byte order in which the data is encoded, invalidByteOrder if decoding failed.

References Exiv2::Internal::TiffHeaderBase::byteOrder().

WriteMethod Exiv2::Internal::TiffParserWorker::encode	(	BasicIo &	io,
		const byte *	pData,
		uint32_t	size,
		const ExifData &	exifData,
		const IptcData &	iptcData,
		const XmpData &	xmpData,
		uint32_t	root,
		FindEncoderFct	findEncoderFct,
		TiffHeaderBase *	pHeader
	)			[static]

Encode TIFF metadata from the metadata containers into a memory block blob.

1) Parse the binary image, if one is provided, and 2) attempt updating the parsed tree in-place ("non-intrusive writing") 3) else, create a new tree and write a new TIFF structure ("intrusive writing"). If there is a parsed tree, it is only used to access the image data in this case.

References Exiv2::Internal::TiffHeaderBase::byteOrder(), Exiv2::Internal::TiffCreator::create(), Exiv2::Internal::Group::none, Exiv2::DataBuf::pData_, Exiv2::DataBuf::size_, Exiv2::BasicIo::temporary(), Exiv2::BasicIo::transfer(), and Exiv2::Internal::TiffHeaderBase::write().

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

• tiffimage_int.hpp
• tiffimage.cpp