//編碼器操作方式定義
#define MaxMTestErrMeLimen(a)			(((a)/3))
//#define MinMTestErrMeLimen(a)			(((a)/8))
#define MinMTestErrMeLimen(a)			(((a)/6))
#define MTestErrMeLimen(a)				(((a)/4))
#define MAdjustErrMe(a)					((a)+(a))
#define MAdjustErrMe2(a)				(4*(a))
#define MAX_RUN_TEST_THRESHOLD_NUMBER	3
#define MIN_MINCONTEXT(a)					(a+(a)/6)
#define MIN_MDoubleMaxErrAdjust(a)			(a+1)
#define MIN_MDoubleMaxErrAdjust2(a)			(a+(a)/2+1)
#define MIN_MDoubleMaxErr(a)				(a+a)

#define MID_MINCONTEXT(a)					(a+((a)/3))
#define MID_MDoubleMaxErrAdjust(a)			(a+((a)/6)+1)
#define MID_MDoubleMaxErrAdjust2(a)			(a+(a)/3+1)
#define MID_MDoubleMaxErr(a)				(a+a+((a)/3))

#define MAX_MINCONTEXT(a)					(a+((a)*2/3))
#define MAX_MDoubleMaxErrAdjust(a)			(a+((a)/3)+1)
#define MAX_MDoubleMaxErrAdjust2(a)			(a+(a))
#define MAX_MDoubleMaxErr(a)				(a+a+a)

#define MFilterGradeLimen(a)			(((a)*3)/3)
//#define MFilterGradeLimen(a)			(((a)*2)/3)
#define DEFAULT_ADJUST_WIN_LENGTH		6

#define RUN_APPEND_FILTER_CONTROL_MIN_RUNL	3//附加游程方式下的濾波控制最小檢測游程長度

#define BASIC_T1	3				// basic default threshold values
#define BASIC_T2	7
#define BASIC_T3	21

#define DEFAULT_RESET 64
//用于多波段編碼
#define UNIFORM_FLOAT_TO_INT_MUL	32767
#define STATISTIC_LINE_NUMBER	3
#define PIX_ADD					8192
#define MAX_PREDICT_ERR			PIX_ADD
#define MAX_A_MUL				131068//4*32767
#define MIN_A_MUL				6553//0.2*32767
#define MAX_BAND_CONTEXT_NUMBER	64
#define BAND_CONTEXT_RANGE		64
#define MIN_STATISTIC_NUMBER	64
#define UPDATE_RELATIVE_LINE_NUMBER		2
#define ALLOW_PREDICTION_MIN_RELATIVE	26541//0.90*0.9*32767
#define NOT_PREDICTION_MAX_RELATIVE		22033//0.82*0.82*32767
//該類僅完成一次連續(xù)的圖像行編碼過程，在調(diào)用過程中，只要不復(fù)位，圖像的壓縮就是連續(xù)的。
//由于部分參數(shù)的優(yōu)化更新與行數(shù)有關(guān)，類內(nèi)有當(dāng)前行指示。
/*

      編碼調(diào)用辦法


	一、初始化
		  1、定義編碼器對象（這是一個數(shù)據(jù)結(jié)構(gòu)，提供圖像行壓縮的基本控制數(shù)據(jù)和圖像的上下文緩沖）
		  2、復(fù)位并初始化編碼器。（主要的圖像的上下文及壓縮控制數(shù)據(jù)，為壓縮新的圖像作準(zhǔn)備）
	二、壓縮過程調(diào)用
		  1、加載圖像數(shù)據(jù)。（要求圖像行數(shù)據(jù)是存在于某緩沖中，如果是可波段預(yù)測，則求行預(yù)測誤差數(shù)據(jù)。）
		  2、壓縮一行圖像數(shù)據(jù)，壓縮比特流存放于指定地址緩沖區(qū)內(nèi)。（有比特流輸出）
		  3、壓縮控制參數(shù)的優(yōu)化更新。（內(nèi)部操作）
	三、壓縮過程的結(jié)束
		  1、釋放編碼器申請的存貯空間。

		譯碼調(diào)用辦法


	一、初始化
		  1、定義譯碼器對象（這是一個數(shù)據(jù)結(jié)構(gòu)，提供圖像行解壓縮的基本控制數(shù)據(jù)和圖像的上下文緩沖）
		  2、復(fù)位并初始化譯碼器。（主要的圖像的上下文及壓縮控制數(shù)據(jù)，為解壓縮新的圖像作準(zhǔn)備）
	二、解壓縮過程調(diào)用
		  1、加載圖像壓縮數(shù)據(jù)。（要求圖像行數(shù)據(jù)是存在于某緩沖中，如果是可波段預(yù)測，則求行預(yù)測誤差數(shù)據(jù)。）
		  2、解壓縮一行圖像數(shù)據(jù)，輸出一個圖像行。
		  3、壓縮控制參數(shù)的優(yōu)化更新。（內(nèi)部操作）
	三、壓縮過程的結(jié)束
		  1、釋放譯碼器申請的存貯空間。

*/

struct AdvanceJPEGLSMaxErrList
{
	short int PixSeat,Sign;
};
class	CDoubleErrorNumberFastCoding;
class	CDoubleErrorRunFastCoding;
class CAdvanceJepgLSOneLineCode
{
private:
public:
	//數(shù)據(jù)單元
	int *lpImage;//圖象數(shù)據(jù)指針，波段預(yù)測時應(yīng)為預(yù)測誤差圖像
	int OneSampleBits;
	int AndCode;
	int Pixel_ADD;
	LPBYTE lpCodeStream;//編碼數(shù)據(jù)流
	int CodeBitcp;
	int LineN;//行計數(shù)

	int A[367];//accumulated prediction error magnitude
	int B[365];//computing the bias
//	int CC[10];
	int C[365];//storing prediction correction values
	int N[367];//frequency of occurrence of each context
	char qbpp;//	number of bits needed to represent a mapped error value
	char bpp;//number of bits needed to represent MAXVAL, with a minimum of 2
	unsigned short int MAXVAL;//maximum possible image sample value over all components of a scan
	short int RANGE;//	range of prediction error representation
	short int RESET;//	threshold value at which A, B, and N are halved

	BOOL EOLine;//end of line indicator, used in run mode
	unsigned short int X;//number of samples per line in the component with largest horizontal dimension

	short int MAX_C;//	maximum allowed value of C[0..364], equal to 127
	short int MIN_C;//	minimum allowed value of C[0..364], equal to -128
	short int LIMIT;//	the value of glimit for a sample encoded in regular mode

	unsigned short int qNEAR;//	difference bound for near-lossless coding

	int x;
	int Ix;//the value of the current sample in the input image
	int Ra,Rb,Rc,Rd,Raa;//reconstructed values of samples in the causal template
	int *lpPrecedingLine,*lpCurrentLine,*lpThirdLine,*lpBuf1,*lpBuf2,*lpBuf3;
	int *lpReconstructPrecedingLine,*lpReconstructCurrentLine,*lpBuf4,*lpBuf5;
	int Rx;//reconstructed value of the current sample
	int Px;//predicted value for the sample x

	int T1, T2, T3;//	thresholds for local gradients

	int SIGN;//temporary variable used to hold the sign of a context
	short int Q;//context determined from Q1, Q2, Q3
	short int Q1,Q2,Q3;//region numbers of quantized local gradients

	int Errval;//prediction error (quantized or unquantized, before and after modulo reduction)
	int MErrval;//Errval mapped  to non-negative integers in regular mode
	int K;//Golomb coding variable for regular mode
	int glimit;//	number of bits to which the length of a Golomb code word is limited

	short int J[32];//	32 variables indicating order of run-length codes
	int RUNval;//repetitive reconstructed sample value in a run
	int RUNcnt;//repetitive sample count for run mode
	int RUNindex;//index for run mode order

	int RItype;//index for run interruption coding
	int TEMP;//auxiliary variable used in the calculation of the Golomb variable in run interruption coding
	int map;//auxiliary variable for error mapping at run interruption
	int EMErrval;//Errval mapped to non-negative integers in run interruption mode
	short int Nn[2];// (365,366) 2 counters for negative prediction error for run interruption

	int DoubleMaxError;//游程方式的檢測門限
	int RunContext;//游程方式下的上下文控制門限
	int MaxErrAdjust1;//第一級大誤差調(diào)節(jié)量
	int MaxErrAdjust2;//第二級大誤差調(diào)節(jié)量
	int RunTestThresholdStep;//游程方式下門限參數(shù)組指示。
	int SetDoubleMaxError[MAX_RUN_TEST_THRESHOLD_NUMBER];//游程方式的檢測門限，預(yù)定值。
	int SetRunContext[MAX_RUN_TEST_THRESHOLD_NUMBER];//游程方式下的上下文控制門限，預(yù)定值。
	int SetMaxErrAdjust1[MAX_RUN_TEST_THRESHOLD_NUMBER];//第一級大誤差調(diào)節(jié)量，預(yù)定值。
	int SetMaxErrAdjust2[MAX_RUN_TEST_THRESHOLD_NUMBER];//第二級大誤差調(diào)節(jié)量，預(yù)定值。

	AdvanceJPEGLSMaxErrList *lpDoubleErrList;//存放每行大誤差位置和狀態(tài)
	int DoubleErrN,DErrN,DDErrN;//大誤差數(shù)，一級大誤差數(shù)，二級大誤差數(shù)。

	int AdjustErrorMe,TestErrorMeLimen;//平坦區(qū)單元均值調(diào)節(jié)值及調(diào)節(jié)檢測門限。
	int AdjustWinLength,BakAdjustWinLength;//調(diào)節(jié)窗口長度。
	int AdjustNumber,AllTestNumber;//單元調(diào)節(jié)數(shù)及總的測試單元數(shù)，用于求單元調(diào)節(jié)率并用以控制單元調(diào)節(jié)檢測門限。
	int RunPredication;//游程方式下的預(yù)測值

	CDoubleErrorNumberFastCoding *lpDErrNumberFastCoding;//一級大誤差數(shù)編碼器
	CDoubleErrorRunFastCoding *lpDErrRunFastCoding;//一級大誤差游程編碼器
	CDoubleErrorNumberFastCoding *lpDDErrNumberFastCoding;//二級大誤差數(shù)編碼器
	CDoubleErrorRunFastCoding *lpDDErrRunFastCoding;//二級大誤差游程編碼器
	CDoubleErrorNumberFastCoding *lpTwoAdjustNumberFastCoding;//一級單元調(diào)節(jié)數(shù)編碼器
	CDoubleErrorRunFastCoding *lpTwoAdjustRunFastCoding;//一級單元調(diào)節(jié)游程編碼器
	CDoubleErrorNumberFastCoding *lpAdjustNumberFastCoding;//二級單元調(diào)節(jié)數(shù)編碼器
	CDoubleErrorRunFastCoding *lpAdjustRunFastCoding;//二級單元調(diào)節(jié)游程編碼器

	//用于多波段編碼
	//AllowBandPrediction用在單象素編碼方式的切換，預(yù)波段預(yù)測可隨時啟用或關(guān)閉。

	CAdvanceJepgLSOneLineCode *lpPredictionBandCode;//用于波段預(yù)測，可從該數(shù)據(jù)結(jié)構(gòu)中獲得預(yù)測波段的重建圖像數(shù)據(jù)
	int A_Mul,B_Add,p;//用于波段預(yù)測的參數(shù)(線性預(yù)測)
	//相關(guān)系數(shù)控制是否預(yù)測，當(dāng)相關(guān)系數(shù)小于某門限時：取消預(yù)測，此時，前行及前前行換成重建象素值（都加上PIX_ADD）。
	//波段預(yù)測系數(shù)及相關(guān)系數(shù)還要更新，前行及前前行的預(yù)測系數(shù)要另行保存，以備預(yù)測開啟時用以求預(yù)測誤差重建值。
	//開啟預(yù)測時：前行及前前行換成預(yù)測誤差重建值，設(shè)置開啟標(biāo)志
	BOOL OpenOffBandPrediction,AllowBandPrediction;//初值為TRUE
	int Last_A_Mul,Last_B_Add;//前行波段預(yù)測的參數(shù)(線性預(yù)測)，初值與A_Mul,B_Add同
	__int64 D_Cun,D_Pre,E_Cun,E_Pre,R_CunPre;
	int PredictErr_D;//預(yù)測誤差的方差
	int StatisticLinN;
public:
	void UpdateBandPrediction();//更新波段預(yù)測參數(shù)，更新變量A_Mul,A_Div,B_Add。
	void InitBandPrediction();
	void OpenBandPrediction();
	void CloseBandPrediction();
	void PrepareCode(int LineL,CAdvanceJepgLSOneLineCode *lpPredictionBand=NULL);
	//用于多波段編碼

	//函數(shù)
	CAdvanceJepgLSOneLineCode();
	~CAdvanceJepgLSOneLineCode();
	BOOL CanEnterRUN();
	BOOL GetNextSample();
	void AppendToBitStream(int a,int b);//Function: appends the non-negative number a in binary form 
		//to the encoded bit stream, using b bits.  Most significant bits are appended first.  
		//The process guarantees that b bits are sufficient to represent a exactly.
	int Quantize(int a,int pNEAR);//Function: returns the quantized value of a following the procedure
		//applied to Errval in Figure A.8 ("if" statement).  This function is used to quantize 
		//the prediction error in near-lossless coding.
	int ModRange(int a,int pRANGE);//Function: returns the value of a modulo RANGE as described in A.4.5.
	int ComputeRx(int pNEAR);//Function: returns the reconstructed value Rx of the current sample
		//as described in Figure A.8 (after the "if" statement).  This function reconstructs 
		//the value of Rx from the quantized prediction error.
	void InitialisationsCode(int OnePixelBit,int AllowMaxError);//初始化編碼器,一般在圖象數(shù)據(jù)加載之后
	void EndCode();//主要是清除申請的緩沖區(qū),要在編碼數(shù)據(jù)處理完后方可結(jié)束
	int RunPredicate();//游程方式下的預(yù)測
	void ResetContext(int Seat);
	int DoEncodeLine(LPBYTE lpImageBuf,int OneSampleBytes,LPBYTE lpCompressBuf,int CompressBitcp,double *lpErrorMse=NULL);//執(zhí)行一行圖像編碼操作
	void AppendRunEncode(int Bgx,int Runl);
	void EncodeDoubleError();//編碼一級大誤差
	void EncodeDDoubleError();//編碼二級大誤差
	void EncodeTwoAdjust(int *lpAdjustSequence,int AdjustLength,int TwoAdjustLength);//編碼二級調(diào)節(jié)序列
	void EncodeAdjust(int *lpAdjustSequence,int AllAdjustLength,int AdjustLength);//編碼一級調(diào)節(jié)序列
	//與譯碼有關(guān)的函數(shù)
	int DoDecodeLine(LPBYTE lpImageBuf,int OneSampleBytes,LPBYTE lpCompressBuf,int CompressBitcp);//執(zhí)行一行圖像譯碼操作
	BOOL SetNextSample();
	int GetFromBitStream(int b);
	int ReturnZeroBitNumber();
	void AppendRunDecode(int Bgx,int Runl);
	void DecodeDoubleError();
	void DecodeDDoubleError();
	int DecodeTwoAdjust(int *lpAdjustSequence,int AdjustLength);
	int DecodeAdjust(int *lpAdjustSequence,int AllAdjustLength);
	CString GetString();
};
//不含預(yù)測的單幅圖像壓縮實例
int OneImageAdvanceJPEGLSEncode(LPBYTE lpOneImageData,LPBYTE lpCompressBuf,
								int Width,
								int Height,
								int AllowMaxError,
								int OnePixelBits,
								int OnePixelBytes);
int OneImageAdvanceJPEGLSDecode(LPBYTE lpOneImageData,LPBYTE lpCompressBuf,
								int Width,
								int Height,
								int AllowMaxError,
								int OnePixelBits,
								int OnePixelBytes);