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/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#ifndef GDCMJPEG2000CODEC_H
#define GDCMJPEG2000CODEC_H
#include "gdcmImageCodec.h"
namespace gdcm
{
class JPEG2000Internals;
/**
* \brief Class to do JPEG 2000
* \note
* the class will produce JPC (JPEG 2000 codestream), since some private implementor
* are using full jp2 file the decoder tolerate jp2 input
* this is an implementation of an ImageCodec
*/
class GDCM_EXPORT JPEG2000Codec : public ImageCodec
{
friend class ImageRegionReader;
friend class Bitmap;
public:
JPEG2000Codec();
~JPEG2000Codec() override;
bool CanDecode(TransferSyntax const &ts) const override;
bool CanCode(TransferSyntax const &ts) const override;
bool Decode(DataElement const &is, DataElement &os) override;
bool Code(DataElement const &in, DataElement &out) override;
bool GetHeaderInfo(std::istream &is, TransferSyntax &ts) override;
ImageCodec * Clone() const override;
// JPEG-2000 / OpenJPEG specific way of encoding lossy-ness
// ref: http://www.openjpeg.org/index.php?menu=doc#encoder
void SetRate(unsigned int idx, double rate);
double GetRate(unsigned int idx = 0) const;
void SetQuality(unsigned int idx, double q);
double GetQuality(unsigned int idx = 0) const;
void SetTileSize(unsigned int tx, unsigned int ty);
void SetNumberOfResolutions(unsigned int nres);
/// Set Number of threads
/// @param nThreads : number of threads for decompression codec, if 0 or 1 decompression is done in current thread, if negative value is set determine how many virtual threads are available
void SetNumberOfThreadsForDecompression(int nThreads);
void SetReversible(bool res);
protected:
bool DecodeExtent(
char *buffer,
unsigned int xmin, unsigned int xmax,
unsigned int ymin, unsigned int ymax,
unsigned int zmin, unsigned int zmax,
std::istream & is
);
bool DecodeByStreams(std::istream &is, std::ostream &os) override;
bool StartEncode( std::ostream & ) override;
bool IsRowEncoder() override;
bool IsFrameEncoder() override;
bool AppendRowEncode( std::ostream & out, const char * data, size_t datalen ) override;
bool AppendFrameEncode( std::ostream & out, const char * data, size_t datalen ) override;
bool StopEncode( std::ostream & ) override;
private:
std::pair<char *, size_t> DecodeByStreamsCommon(char *dummy_buffer, size_t buf_size);
bool CodeFrameIntoBuffer(char * outdata, size_t outlen, size_t & complen, const char * indata, size_t inlen );
bool GetHeaderInfo(const char * dummy_buffer, size_t len, TransferSyntax &ts);
JPEG2000Internals *Internals;
};
} // end namespace gdcm
#endif //GDCMJPEG2000CODEC_H
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