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geant4/source/visualization/RayTracer/include/G4RTJpegCoder.hh
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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
// * LICENSE and available at http://cern.ch/geant4/license . These *
// * include a list of copyright holders. *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
//
// $Id: G4RTJpegCoder.hh,v 1.6 2006-06-29 21:23:15 gunter Exp $
// GEANT4 tag $Name: not supported by cvs2svn $
//
//
// class description:
//
// This class converts 8 bit unsighned ints array to JPEG code.
//
#ifndef G4RTJpegCoder_H
#define G4RTJpegCoder_H 1
#include "G4RTJpeg.hh"
//HuffmanTable
struct
G4HuffmanCodeTable
{
int numOfElement;
int* SizeT;
int* CodeT;
};
class G4OutBitStream;
class G4JpegCoder
{
public:
G4JpegCoder(u_char* colorR,u_char* colorG,u_char* colorB);
~G4JpegCoder(void);
void GetJpegData(char** aJpegData,int& size);
void SetJpegProperty(const G4JpegProperty& aProperty);
int DoCoding(void);
protected:
u_char* mRgb[3];
int mYBlock[4][64];
int mCbBlock[64];
int mCrBlock[64];
double mCosT[8][8];
int mDCTData[64];
int mPreDC[3];
G4JpegProperty mProperty;
int mNumVUnits;
int mNumHUnits;
G4OutBitStream *mOBSP;
void CodeMCU();
void makeYCC(int ux,int uy);
void CodeHuffman(int cs);
void ForwardDCT(int* picData);
void Quantization(int cs);
void WriteHeader(void);
void WriteEOI(void);
};
const u_int JFIFLength = 16;
const u_int JFIFVersion = 0x0102; //JFIF Ver 1.02
const u_char YSampleF = 0x22;
const u_char CSampleF = 0x11;
#endif