Exiv2
pngimage.hpp
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1// ***************************************************************** -*- C++ -*-
2/*
3 * Copyright (C) 2004-2018 Exiv2 authors
4 * This program is part of the Exiv2 distribution.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
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18 * Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
19 */
31#ifndef PNGIMAGE_HPP_
32#define PNGIMAGE_HPP_
33
34// *****************************************************************************
35#include "exiv2lib_export.h"
36
37// included header files
38#include "image.hpp"
39
40// *****************************************************************************
41// namespace extensions
42namespace Exiv2
43{
44
45// *****************************************************************************
46// class definitions
47
48 // Add PNG to the supported image formats
49 namespace ImageType
50 {
51 const int png = 6;
52 }
53
58 class EXIV2API PngImage : public Image {
59 public:
61
62
77 PngImage(BasicIo::AutoPtr io, bool create);
79
81
84
91 void printStructure(std::ostream& out, PrintStructureOption option,int depth);
93
95
98
99 private:
101
102
103 PngImage(const PngImage& rhs);
105 PngImage& operator=(const PngImage& rhs);
113 void doWriteMetadata(BasicIo& oIo);
115
116 std::string profileName_;
117
118 }; // class PngImage
119
120// *****************************************************************************
121// template, inline and free functions
122
123 // These could be static private functions on Image subclasses but then
124 // ImageFactory needs to be made a friend.
131
133 EXIV2API bool isPngType(BasicIo& iIo, bool advance);
134
135} // namespace Exiv2
136
137#endif // #ifndef PNGIMAGE_HPP_
An interface for simple binary IO.
Definition: basicio.hpp:55
std::auto_ptr< BasicIo > AutoPtr
BasicIo auto_ptr type.
Definition: basicio.hpp:58
Abstract base class defining the interface for an image. This is the top-level interface to the Exiv2...
Definition: image.hpp:81
std::auto_ptr< Image > AutoPtr
Image auto_ptr type.
Definition: image.hpp:84
Class to access PNG images. Exif and IPTC metadata are supported directly.
Definition: pngimage.hpp:58
void readMetadata()
Read all metadata supported by a specific image format from the image. Before this method is called,...
void writeMetadata()
Write metadata back to the image.
PngImage(BasicIo::AutoPtr io, bool create)
Constructor that can either open an existing PNG image or create a new image from scratch....
std::string mimeType() const
Return the MIME type of the image.
void printStructure(std::ostream &out, PrintStructureOption option, int depth)
Print out the structure of image file.
const int png
PNG image type (see class PngImage)
Definition: pngimage.hpp:51
Provides classes and functions to encode and decode Exif and Iptc data. The libexiv2 API consists of ...
Definition: asfvideo.hpp:36
PrintStructureOption
Options for printStructure.
Definition: image.hpp:67
EXIV2API Image::AutoPtr newPngInstance(BasicIo::AutoPtr io, bool create)
Create a new PngImage instance and return an auto-pointer to it. Caller owns the returned object and ...
@ string
IPTC string type.
Definition: types.hpp:147
EXIV2API bool isPngType(BasicIo &iIo, bool advance)
Check if the file iIo is a PNG image.