Exiv2
matroskavideo.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 */
27#ifndef MATROSKAVIDEO_HPP_
28#define MATROSKAVIDEO_HPP_
29
30// *****************************************************************************
31#include "exiv2lib_export.h"
32
33// included header files
34#include "image.hpp"
35
36// *****************************************************************************
37// namespace extensions
38namespace Exiv2 {
39
40// *****************************************************************************
41// class definitions
42
43 // Add MKV to the supported image formats
44 namespace ImageType {
45 const int mkv = 21;
46 }
47
48 // Todo: Should be hidden
52 struct EXIV2LIB_DEPRECATED MatroskaTags {
53 uint64_t val_;
54 const char* label_;
55
57 bool operator==(uint64_t key) const { return val_ == key; }
58 }; // struct TagDetails
59
63 class EXIV2LIB_DEPRECATED_EXPORT MatroskaVideo : public Image {
64 public:
66
67
80
82
86
88
91
92 protected:
102 uint32_t findBlockSize(byte b);
114 void contentManagement(const MatroskaTags* mt, const byte* buf, long size);
120
121 private:
123
124
125 MatroskaVideo(const MatroskaVideo& rhs);
127 MatroskaVideo& operator=(const MatroskaVideo& rhs);
129
130 private:
132 bool continueTraversing_;
134 uint64_t height_, width_;
135
136 }; // class MatroskaVideo
137
138// *****************************************************************************
139// template, inline and free functions
140
141 // These could be static private functions on Image subclasses but then
142 // ImageFactory needs to be made a friend.
148 EXIV2LIB_DEPRECATED_EXPORT Image::AutoPtr newMkvInstance(BasicIo::AutoPtr io, bool create);
149
151 EXIV2LIB_DEPRECATED_EXPORT bool isMkvType(BasicIo& iIo, bool advance);
152
153} // namespace Exiv2
154
155#endif // #ifndef MATROSKAVIDEO_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 Matroska video files.
Definition: matroskavideo.hpp:63
void contentManagement(const MatroskaTags *mt, const byte *buf, long size)
Interpret tag information, and save it in the respective XMP container.
std::string mimeType() const
Return the MIME type of the image.
void decodeBlock()
Check for a valid tag and decode the block at the current IO position. Calls contentManagement() or s...
void writeMetadata()
Write metadata back to the image.
void readMetadata()
Read all metadata supported by a specific image format from the image. Before this method is called,...
MatroskaVideo(BasicIo::AutoPtr io)
Constructor for a Matroska video. Since the constructor can not return a result, callers should check...
void aspectRatio()
Calculates Aspect Ratio of a video, and stores it in the respective XMP container.
uint32_t findBlockSize(byte b)
Function used to calulate the size of a block. This information is only stored in one byte....
const int mkv
Treating mkv as an image type>
Definition: matroskavideo.hpp:45
Provides classes and functions to encode and decode Exif and Iptc data. The libexiv2 API consists of ...
Definition: asfvideo.hpp:36
@ string
IPTC string type.
Definition: types.hpp:147
EXIV2LIB_DEPRECATED_EXPORT bool isMkvType(BasicIo &iIo, bool advance)
Check if the file iIo is a Matroska Video.
EXIV2LIB_DEPRECATED_EXPORT Image::AutoPtr newMkvInstance(BasicIo::AutoPtr io, bool create)
Create a new MatroskaVideo instance and return an auto-pointer to it. Caller owns the returned object...
Helper structure for the Matroska tags lookup table.
Definition: matroskavideo.hpp:52
uint64_t val_
Tag value.
Definition: matroskavideo.hpp:53
const char * label_
Translation of the tag value.
Definition: matroskavideo.hpp:54
bool operator==(uint64_t key) const
Comparison operator for use with the find template.
Definition: matroskavideo.hpp:57