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(don't let the components diagram below mislead you). Exiv2::Image
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defines the interface to access various image metadata. Derived from
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Exiv2::Image are the implementations of different image formats.
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However, the only image format currently supported is Jpeg. Most
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Exiv2::Image are the implementations of different image formats. Most
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applications will use
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<a class="el" href="classExiv2_1_1ImageFactory.html">Exiv2::ImageFactory</a>
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to access images in files or memory, in which case the image format
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<a class="el" href="classExiv2_1_1ExifData.html">Exiv2::ExifData</a>
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and <a class="el" href="classExiv2_1_1IptcData.html">Exiv2::IptcData</a>
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of the Exiv2 library. They hold a container
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of Exif and Iptc metadata, respectively, and define related methods to
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of Exif and IPTC metadata, respectively, and define related methods to
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access and manipulate the metadata. The containers hold objects derived from
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<a class="el" href="classExiv2_1_1Metadatum.html">Exiv2::Metadatum</a>.
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Interface class Exiv2::Metadatum defines methods to access the
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information of one Exif tag or Iptc dataset. It models the tag data as
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information of one Exif tag or IPTC dataset. It models the tag data as
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a key and value pair.
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The abstract base class
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<a class="el" href="classExiv2_1_1Key.html">Exiv2::Key</a> defines the
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interface for a key. Concrete keys implement Exif and Iptc keys.
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interface for a key. Concrete keys implement Exif and IPTC keys.
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The abstract base class
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<a class="el" href="classExiv2_1_1Value.html">Exiv2::Value</a> defines
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the interface to access tag information, from which concrete values are
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derived. The actual value used in a metadatum depends on the type of
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the Exif tag or Iptc dataset. It is usually determined when the Exif metadata
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the Exif tag or IPTC dataset. It is usually determined when the Exif metadata
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is read from an image. It is also possible to manually create a Value and
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together with a key add it to an ExifData or IptcData container.</p>
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functionality: <a href="exifprint_8cpp-example.html">Exifprint</a>
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shows how the Exif data of an image can be read and written to the screen.
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<a href="iptcprint_8cpp-example.html">Iptcprint</a> is a similar
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example to print Iptc data.
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example to print IPTC data.
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<a href="addmoddel_8cpp-example.html">Addmoddel</a> shows how to
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add, modify and delete Exif metadata.
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<a href="exifcomment_8cpp-example.html">Exifcomment</a> shows how to
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