GDCM  2.2.4
gdcmJPEG2000Codec.h
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1 /*=========================================================================
2 
3  Program: GDCM (Grassroots DICOM). A DICOM library
4 
5  Copyright (c) 2006-2011 Mathieu Malaterre
6  All rights reserved.
7  See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
8 
9  This software is distributed WITHOUT ANY WARRANTY; without even
10  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
11  PURPOSE. See the above copyright notice for more information.
12 
13 =========================================================================*/
14 #ifndef GDCMJPEG2000CODEC_H
15 #define GDCMJPEG2000CODEC_H
16 
17 #include "gdcmImageCodec.h"
18 
19 namespace gdcm
20 {
21 
22 class JPEG2000Internals;
31 {
32 friend class ImageRegionReader;
33  friend class Bitmap;
34 public:
35  JPEG2000Codec();
36  ~JPEG2000Codec();
37 
38  bool CanDecode(TransferSyntax const &ts) const;
39  bool CanCode(TransferSyntax const &ts) const;
40 
41  bool Decode(DataElement const &is, DataElement &os);
42  bool Code(DataElement const &in, DataElement &out);
43 
44  virtual bool GetHeaderInfo(std::istream &is, TransferSyntax &ts);
45 
46  // JPEG-2000 / OpenJPEG specific way of encoding lossy-ness
47  // ref: http://www.openjpeg.org/index.php?menu=doc#encoder
48  void SetRate(unsigned int idx, double rate);
49  double GetRate(unsigned int idx = 0) const;
50 
51  void SetQuality(unsigned int idx, double q);
52  double GetQuality(unsigned int idx = 0) const;
53 
54  void SetTileSize(unsigned int tx, unsigned int ty);
55 
56  void SetNumberOfResolutions(unsigned int nres);
57 
58  void SetReversible(bool res);
59 
60 protected:
61  bool DecodeExtent(
62  char *buffer,
63  unsigned int xmin, unsigned int xmax,
64  unsigned int ymin, unsigned int ymax,
65  unsigned int zmin, unsigned int zmax,
66  std::istream & is
67  );
68 
69  bool DecodeByStreams(std::istream &is, std::ostream &os);
70 private:
71  std::pair<char *, size_t> DecodeByStreamsCommon(char *dummy_buffer, size_t buf_size);
72  bool GetHeaderInfo(const char * dummy_buffer, size_t len, TransferSyntax &ts);
73  JPEG2000Internals *Internals;
74 };
75 
76 } // end namespace gdcm
77 
78 #endif //GDCMJPEG2000CODEC_H

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