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130 lines
4.8 KiB
C++
130 lines
4.8 KiB
C++
// ***************************************************************** -*- C++ -*-
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/*
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* Copyright (C) 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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#pragma once
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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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EXIV2API bool enableBMFF(bool enable = true);
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// *****************************************************************************
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// class definitions
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// Add Base Media File Format to the supported image formats
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namespace ImageType {
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const int bmff = 15; //!< BMFF (bmff) image type (see class BMFF)
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}
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/*!
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@brief Class to access BMFF images.
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*/
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class EXIV2API BmffImage : 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 to open a BMFF 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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@param create Specifies if an existing image should be read (false)
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or if a new file should be created (true).
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*/
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BmffImage(BasicIo::AutoPtr io, bool create);
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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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void writeMetadata() /* override */ ;
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/*!
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@brief Print out the structure of image file.
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@throw Error if reading of the file fails or the image data is
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not valid (does not look like data of the specific image type).
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@warning This function is not thread safe and intended for exiv2 -pS for debugging.
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*/
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void printStructure(std::ostream& out, PrintStructureOption option,int depth) /* 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 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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#if 0
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BmffImage& operator=(const BmffImage& rhs) /* = delete*/ ;
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BmffImage& operator=(const BmffImage&& rhs) /* = delete */ ;
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BmffImage(const BmffImage& rhs) /* = delete */;
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BmffImage(const BmffImage&& rhs) /* = delete */;
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#endif
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private:
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uint32_t fileType;
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/*!
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@brief Provides the main implementation of writeMetadata() by
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writing all buffered metadata to the provided BasicIo.
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@param oIo BasicIo instance to write to (a temporary location).
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@return 4 if opening or writing to the associated BasicIo fails
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*/
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void doWriteMetadata(BasicIo& outIo);
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//@}
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std::string toAscii(long n);
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}; // class BmffImage
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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 BMFF 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::AutoPtr newBmffInstance(BasicIo::AutoPtr io, bool create);
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//! Check if the file iIo is a BMFF image.
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EXIV2API bool isBmffType(BasicIo& iIo, bool advance);
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} // namespace Exiv2
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