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>

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. More...
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, OffsetWriter *pOffsetWriter)
	Encode TIFF metadata from the metadata containers into a memory block blob. More...

Detailed Description

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

Member Function Documentation

decode()

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.
iptcData	IPTC metadata container.
xmpData	XMP metadata container.
pData	Pointer to the data buffer. Must point to data in TIFF format; no checks are performed.
size	Length of the data buffer.
root	Root tag of the TIFF tree for new TIFF components.
findDecoderFct	Function to access special decoding info.
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(), and Exiv2::Internal::Tag::root.

Referenced by Exiv2::OrfParser::decode(), Exiv2::Cr2Parser::decode(), Exiv2::Rw2Parser::decode(), and Exiv2::TiffParser::decode().

encode()

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, OffsetWriter *  pOffsetWriter  )

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::TiffEncoder::add(), Exiv2::Internal::TiffHeaderBase::byteOrder(), Exiv2::Internal::TiffCreator::create(), EXV_INFO, Exiv2::DataBuf::pData_, Exiv2::Internal::Tag::root, Exiv2::DataBuf::size_, Exiv2::BasicIo::transfer(), and Exiv2::Internal::OffsetWriter::writeOffsets().

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

• tiffimage_int.hpp
• tiffimage_int.cpp