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122 lines
4.5 KiB
C++
122 lines
4.5 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 GIFIMAGE_HPP_
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#define GIFIMAGE_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 GIF to the supported image formats
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namespace ImageType {
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const int gif = 11; //!< GIF image type (see class GifImage)
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}
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/*!
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@brief Class to access raw GIF images. Exif/IPTC metadata are supported
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directly.
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*/
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class EXIV2API GifImage : public Image {
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public:
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//! @name NOT Implemented
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//@{
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//! Copy constructor
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GifImage(const GifImage& rhs) = delete;
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//! Assignment operator
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GifImage& operator=(const GifImage& rhs) = delete;
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//@}
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//! @name Creators
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//@{
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/*!
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@brief Constructor to open a GIF image. Since the
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constructor can not return a result, callers should check the
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good() method after object construction to determine success
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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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*/
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explicit GifImage(BasicIo::UniquePtr io);
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//@}
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//! @name Manipulators
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//@{
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void readMetadata() override;
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/*!
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@brief Todo: Write metadata back to the image. This method is not
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yet(?) implemented. Calling it will throw an Error(kerWritingImageFormatUnsupported).
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*/
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void writeMetadata() override;
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/*!
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@brief Todo: Not supported yet(?). Calling this function will throw
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an instance of Error(kerInvalidSettingForImage).
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*/
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void setExifData(const ExifData& exifData) override;
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/*!
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@brief Todo: Not supported yet(?). Calling this function will throw
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an instance of Error(kerInvalidSettingForImage).
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*/
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void setIptcData(const IptcData& iptcData) override;
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/*!
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@brief Not supported. Calling this function will throw an instance
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of Error(kerInvalidSettingForImage).
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*/
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void setComment(const std::string& comment) override;
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//@}
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//! @name Accessors
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//@{
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std::string mimeType() const override;
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//@}
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}; // class GifImage
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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 GifImage 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 newGifInstance(BasicIo::UniquePtr io, bool create);
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//! Check if the file iIo is a GIF image.
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EXIV2API bool isGifType(BasicIo& iIo, bool advance);
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} // namespace Exiv2
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#endif // #ifndef GIFIMAGE_HPP_
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