Exiv2
matroskavideo.hpp
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20 #ifndef MATROSKAVIDEO_HPP_
21 #define MATROSKAVIDEO_HPP_
22 
23 // *****************************************************************************
24 #include "exiv2lib_export.h"
25 
26 // included header files
27 #include "image.hpp"
28 
29 // *****************************************************************************
30 // namespace extensions
31 namespace Exiv2 {
32 
33 // *****************************************************************************
34 // class definitions
35 
36  // Add MKV to the supported image formats
37  namespace ImageType {
38  const int mkv = 21;
39  }
40 
41  // Todo: Should be hidden
45  struct EXIV2LIB_DEPRECATED MatroskaTags {
46  uint64_t val_;
47  const char* label_;
48 
50  bool operator==(uint64_t key) const { return val_ == key; }
51  }; // struct TagDetails
52 
56  class EXIV2LIB_DEPRECATED_EXPORT MatroskaVideo : public Image {
57  public:
59 
60 
73 
75 
76  void readMetadata();
77  void writeMetadata();
79 
81 
82  std::string mimeType() const;
84 
85  protected:
95  uint32_t findBlockSize(byte b);
100  void decodeBlock();
107  void contentManagement(const MatroskaTags* mt, const byte* buf, long size);
112  void aspectRatio();
113 
114  private:
116 
117  MatroskaVideo(const MatroskaVideo& rhs);
120  MatroskaVideo& operator=(const MatroskaVideo& rhs);
122 
123  private:
125  bool continueTraversing_;
127  uint64_t height_, width_;
128 
129  }; // class MatroskaVideo
130 
131 // *****************************************************************************
132 // template, inline and free functions
133 
134  // These could be static private functions on Image subclasses but then
135  // ImageFactory needs to be made a friend.
141  EXIV2LIB_DEPRECATED_EXPORT Image::AutoPtr newMkvInstance(BasicIo::AutoPtr io, bool create);
142 
144  EXIV2LIB_DEPRECATED_EXPORT bool isMkvType(BasicIo& iIo, bool advance);
145 
146 } // namespace Exiv2
147 
148 #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:78
std::auto_ptr< Image > AutoPtr
Image auto_ptr type.
Definition: image.hpp:81
Class to access Matroska video files.
Definition: matroskavideo.hpp:56
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:38
Provides classes and functions to encode and decode Exif and Iptc data. The libexiv2 API consists of ...
Definition: asfvideo.hpp:36
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:45
uint64_t val_
Tag value.
Definition: matroskavideo.hpp:46
const char * label_
Translation of the tag value.
Definition: matroskavideo.hpp:47
bool operator==(uint64_t key) const
Comparison operator for use with the find template.
Definition: matroskavideo.hpp:50