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gdcmJPEGCodec.h
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    00001 /*=========================================================================
    00002
    00003   Program: GDCM (Grassroots DICOM). A DICOM library
    00004
    00005   Copyright (c) 2006-2011 Mathieu Malaterre
    00006   All rights reserved.
    00007   See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
    00008
    00009      This software is distributed WITHOUT ANY WARRANTY; without even
    00010      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
    00011      PURPOSE.  See the above copyright notice for more information.
    00012
    00013 =========================================================================*/
    00014 #ifndef GDCMJPEGCODEC_H
    00015 #define GDCMJPEGCODEC_H
    00016
    00017 #include "gdcmImageCodec.h"
    00018
    00019 namespace gdcm
    00020 {
    00021
    00022 class PixelFormat;
    00023 class TransferSyntax;
    00040 class GDCM_EXPORT JPEGCodec : public ImageCodec
    00041 {
    00042 public:
    00043   JPEGCodec();
    00044   ~JPEGCodec();
    00045   bool CanDecode(TransferSyntax const &ts) const;
    00046   bool CanCode(TransferSyntax const &ts) const;
    00047   bool Decode(DataElement const &is, DataElement &os);
    00048   void SetPixelFormat(PixelFormat const &pf);
    00049
    00051   void ComputeOffsetTable(bool b);
    00052
    00054   bool Code(DataElement const &in, DataElement &out);
    00055
    00056   virtual bool GetHeaderInfo(std::istream &is, TransferSyntax &ts);
    00057
    00058   //void SetReversible(bool res);
    00059
    00060   void SetQuality(double q);
    00061   double GetQuality() const;
    00062
    00063   void SetLossless(bool l);
    00064   bool GetLossless() const;
    00065
    00066 protected:
    00067   bool Decode(std::istream &is, std::ostream &os);
    00068   bool IsValid(PhotometricInterpretation const &pi);
    00069
    00070 protected:
    00071   // Internal method called by SetPixelFormat
    00072   // Instantiate the right jpeg codec (8, 12 or 16)
    00073   void SetBitSample(int bit);
    00074
    00075 protected:
    00076   int BitSample;
    00077   bool Lossless;
    00078   int Quality;
    00079
    00080 private:
    00081   void SetupJPEGBitCodec(int bit);
    00082   JPEGCodec *Internal;
    00083 };
    00084
    00085 } // end namespace gdcm
    00086
    00087 #endif //GDCMJPEGCODEC_H