Exiv2
webpimage.hpp
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20 #ifndef WEBPIMAGE_HPP
21 #define WEBPIMAGE_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 WEBP to the supported image formats
37  namespace ImageType {
38  const int webp = 23;
39  }
40 
44  class EXIV2API WebPImage:public Image
45  {
46  public:
48 
49 
62 
64 
65  void readMetadata();
66  void writeMetadata();
67  void printStructure(std::ostream& out, PrintStructureOption option,int depth);
69 
73  void setComment(const std::string& comment);
74  void setIptcData(const IptcData& /*iptcData*/);
75 
77 
78  std::string mimeType() const;
80 
81  private:
82  void doWriteMetadata(BasicIo& outIo);
84 
85  long getHeaderOffset(byte *data, long data_size,
86  byte *header, long header_size);
87  bool equalsWebPTag(Exiv2::DataBuf& buf ,const char* str);
88  void debugPrintHex(byte *data, long size);
89  void decodeChunks(long filesize);
90  void inject_VP8X(BasicIo& iIo, bool has_xmp, bool has_exif,
91  bool has_alpha, bool has_icc, int width,
92  int height);
93 
95  WebPImage(const WebPImage& rhs);
97  WebPImage& operator=(const WebPImage& rhs);
99 
100  private:
101  const static byte WEBP_PAD_ODD;
102  const static int WEBP_TAG_SIZE;
103  const static int WEBP_VP8X_ICC_BIT;
104  const static int WEBP_VP8X_ALPHA_BIT;
105  const static int WEBP_VP8X_EXIF_BIT;
106  const static int WEBP_VP8X_XMP_BIT;
107  const static char* WEBP_CHUNK_HEADER_VP8X;
108  const static char* WEBP_CHUNK_HEADER_VP8L;
109  const static char* WEBP_CHUNK_HEADER_VP8;
110  const static char* WEBP_CHUNK_HEADER_ANMF;
111  const static char* WEBP_CHUNK_HEADER_ANIM;
112  const static char* WEBP_CHUNK_HEADER_ICCP;
113  const static char* WEBP_CHUNK_HEADER_EXIF;
114  const static char* WEBP_CHUNK_HEADER_XMP;
115 
116 
117  }; //Class WebPImage
118 
119 // *****************************************************************************
120 // template, inline and free functions
121 
122  // These could be static private functions on Image subclasses but then
123  // ImageFactory needs to be made a friend.
129  EXIV2API Image::AutoPtr newWebPInstance(BasicIo::AutoPtr io, bool create);
130 
132  EXIV2API bool isWebPType(BasicIo& iIo, bool advance);
133 
134 } // namespace Exiv2
135 
136 #endif // WEBPIMAGE_HPP
An interface for simple binary IO.
Definition: basicio.hpp:55
std::auto_ptr< BasicIo > AutoPtr
BasicIo auto_ptr type.
Definition: basicio.hpp:58
Utility class containing a character array. All it does is to take care of memory allocation and dele...
Definition: types.hpp:193
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
A container for IPTC data. This is a top-level class of the Exiv2 library.
Definition: iptc.hpp:170
Class to access WEBP video files.
Definition: webpimage.hpp:45
const int webp
Treating webp as an image type>
Definition: webpimage.hpp:38
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:64
@ comment
Exiv2 type for the Exif user comment.
Definition: types.hpp:139
EXIV2API bool isWebPType(BasicIo &iIo, bool advance)
Check if the file iIo is a WebP Video.
Definition: webpimage.cpp:743
EXIV2API Image::AutoPtr newWebPInstance(BasicIo::AutoPtr io, bool create)
Create a new WebPImage instance and return an auto-pointer to it. Caller owns the returned object and...
Definition: webpimage.cpp:734