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111 lines
4.0 KiB
C++
111 lines
4.0 KiB
C++
// ***************************************************************** -*- C++ -*-
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/*
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* Copyright (C) 2004-2021 Exiv2 authors
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* This program is part of the Exiv2 distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef XMPSIDECAR_HPP_
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#define XMPSIDECAR_HPP_
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// *****************************************************************************
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#include "exiv2lib_export.h"
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// included header files
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#include "image.hpp"
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// *****************************************************************************
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// namespace extensions
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namespace Exiv2 {
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// *****************************************************************************
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// class definitions
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// Add XMP to the supported image formats
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namespace ImageType {
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const int xmp = 10; //!< XMP sidecar files (see class XmpSidecar)
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}
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/*!
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@brief Class to access XMP sidecar files. They contain only XMP metadata.
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*/
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class EXIV2API XmpSidecar : public Image {
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public:
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//! @name Creators
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//@{
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/*!
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@brief Constructor for an XMP sidecar file. Since the constructor
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can not return a result, callers should check the good() method
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after object construction to determine success or failure.
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@param io An auto-pointer that owns a BasicIo instance used for
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reading and writing image metadata. \b Important: The constructor
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takes ownership of the passed in BasicIo instance through the
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auto-pointer. Callers should not continue to use the BasicIo
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instance after it is passed to this method. Use the Image::io()
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method to get a temporary reference.
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@param create Specifies if an existing image should be read (false)
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or if a new image should be created (true).
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*/
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XmpSidecar(BasicIo::UniquePtr io, bool create);
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//@}
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//! @name Manipulators
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//@{
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void readMetadata();
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void writeMetadata();
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/*!
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@brief Not supported. XMP sidecar files do not contain a comment.
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Calling this function will throw an instance of Error(kerInvalidSettingForImage).
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*/
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void setComment(const std::string& comment);
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//@}
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//! @name Accessors
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//@{
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std::string mimeType() const;
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//@}
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private:
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//! @name NOT Implemented
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//@{
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//! Copy constructor
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XmpSidecar(const XmpSidecar& rhs);
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//! Assignment operator
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XmpSidecar& operator=(const XmpSidecar& rhs);
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//@}
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Exiv2::Dictionary dates_;
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}; // class XmpSidecar
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// *****************************************************************************
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// template, inline and free functions
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// These could be static private functions on Image subclasses but then
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// ImageFactory needs to be made a friend.
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/*!
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@brief Create a new XmpSidecar instance and return an auto-pointer to it.
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Caller owns the returned object and the auto-pointer ensures that
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it will be deleted.
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*/
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EXIV2API Image::UniquePtr newXmpInstance(BasicIo::UniquePtr io, bool create);
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//! Check if the file iIo is an XMP sidecar file.
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EXIV2API bool isXmpType(BasicIo& iIo, bool advance);
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} // namespace Exiv2
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#endif // #ifndef XMPSIDECAR_HPP_
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