dct.h

可以选择各种压缩方式对读入的图像进行压缩和解压

#include <math.h>
#include <malloc.h>
#include <stdlib.h>
#include <stdio.h>
#include "types.h"

////blstype Quantization(btype QuanTable[][8][8],int row,int column,short int *a);
////a:指向图像数据的起始地址的指针；QuanTable：返回量化后的数据；row:图像的行数；column：图像的列数
//blstype Quantization(ptype **a, unsigned int width, unsigned int height, btype (**QuanTable)[8][8], btype QTable[8][8]);
//
//
////void IQuantization(short int *IQuanTable,btype a[][8][8], int row, int column);
////a：图像量化后的数据；IQuanTable：指向图像反量化后数据的起始地址；row:图像的行数；column：图像的列数
//int IQuantization(ptype ***P,  btype a[][8][8], unsigned int height, unsigned int width, btype QTable[8][8]);
//void Fdct(btype va[][8],double vb[][8]);
////va：数据；vb：DCT系数
//void Idct(double va[8][8], ptype vb[][8]);
// //va：DCT系数；vb：数据

blstype dctqt(ptype **P,unsigned int width, unsigned int height,
			  btype & (*Q)[8][8], int mode, int level, bool adapornot); //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

void	idctqt(btype Q2[][8][8], blstype n, ptype & **P2, unsigned int height, unsigned int width,
			   int mode, int level, bool adapornot);




void mode2table(int mode, bool adapt, ptype **P, btype QTable[8][8]);

BOOL Quantization(double (*Dct)[8][8], btype (*QuanTable)[8][8], btype QTable[8][8], blstype NM);
BOOL DivisionFdct(ptype **a, unsigned int width, unsigned int height, double (*Dct)[8][8], blstype &NM);
BOOL IQuantization(btype (*QuanTable)[8][8], double (*Dct)[8][8], btype QTable[8][8], blstype NM);
BOOL IdctCombination(double (*Dct)[8][8], ptype **a, unsigned int width, unsigned int height);

void Histogram(double va[][8],btype vb[][8],int grade=6);
void HistQuan(double va[][8][8],btype (*vb)[8][8],blstype NM,int grade=6);
void HistIQuan(double va[][8][8],btype (*vb)[8][8],blstype NM);

void AcdseeTable(btype QTable[8][8],int n=101);
//max and min data of QTable are 151 and 1; if n>100 or n<0 or n is not input,JPEG table selected