CVSD编解码C语言程序

#include
#include
#include
#define BUFFERSIZEOUT  254
#define BUFFERSIZEIN   4064

#define  DeltaMax  1280
#define  DeltaMin 6.5
#define Beta  0.99
#define  ORD  6
#define  MAX_BITS  16

double  ValPreCVSD=0;
double  DeltaCVSD=20;
double Delta0CVSD=10;
char  ThreeJudgeCVSD[3]={010};
double  ValPreCVSDDE=0;
double  DeltaCVSDDE=20;
double Delta0CVSDDE=10;
char  ThreeJudgeCVSDDE[3]={010};

static  double CoefA[ORD]={1.00000000-3.888933296.64074495
-6.086001002.98673653-0.62768820};
static  double CoefB[ORD]={0.03285030-0.057239160.03681835
0.03681835-0.057239160.03285030} ;
static short filterY[ORD-1];
static short filterX[ORD];
char CVSDCoder（short InData）;
short CVSDDecoder（char InData）;


char CVSDCoder（short InData）
{
  double Diff=0;
     int j=0;
	 char OutData;
	 Diff=InData-ValPreCVSD;

if（Diff>0）
{
ThreeJudgeCVSD[j]=1;
OutData=1;
}
else
{
ThreeJudgeCVSD[j]=0;
OutData=0;
}	                 
if （（（ThreeJudgeCVSD[0]==1）&（ThreeJudgeCVSD[1]==1）&（ThreeJudgeCVSD[2]==1））|
      （ThreeJudgeCVSD[0]==0）& （ThreeJudgeCVSD[1]==0）&（ThreeJudgeCVSD[1]==1）））
         
	 							   DeltaCVSD=DeltaCVSD+Delta0CVSD;
else							   DeltaCVSD=Beta*DeltaCVSD;
if（DeltaCVSD>DeltaMax）             	DeltaCVSD=DeltaMax;
if（DeltaCVSD

if（ThreeJudgeCVSD[j]==1）
{
     ValPreCVSD=ValPreCVSD+DeltaCVSD;
}

if（ThreeJudgeCVS