pcmjiema.txt

这是一段用mfc实现的的编解码器的源代码

// 测试Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "测试.h"
#include "测试Dlg.h"
#include "pcm.h"
#include "Introduction.h"
#include "math.h"


#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyDlg dialog

CMyDlg::CMyDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMyDlg)
	m_time = 0.0;
	m_OutPath = _T("");
	m_func = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMyDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyDlg)
	DDX_Control(pDX, IDC_COMBO1, m_choosefunc);
	DDX_Text(pDX, IDC_EDIT1, m_time);
	DDX_Text(pDX, IDC_EDIT2, m_OutPath);
	DDX_CBString(pDX, IDC_COMBO1, m_func);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyDlg, CDialog)
	//{{AFX_MSG_MAP(CMyDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)

	ON_COMMAND(ID_MENUITEM32771, OnMenuitem32771)
	ON_COMMAND(ID_MENUITEM32774, OnMenuitem32774)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyDlg message handlers

char code1[9];
char code2[8];
int s[8];
void encode(double input)
{
void dlm(int n);
void dnm(int x,int m,int n);
int ipre(int x,int y[8]);
void jiema();

long int c,temp;
int x;
code1[8]=NULL;
      temp=input*128*16;
      if(temp>0) 
       code1[0]='1';
	  
      else  {code1[0]='0';temp=fabs(temp);}
      if(temp>=0 && temp<16) {dlm(0);dnm(temp,0,1);}
      if(temp>=16 && temp<32) {dlm(1);dnm(temp,16,1);}
      if(temp>=32 && temp<64) {dlm(2);dnm(temp,32,2);}
      if(temp>=64 && temp<128) {dlm(3);dnm(temp,64,4);}
      if(temp>=128 && temp<256) {dlm(4);dnm(temp,128,8);}
      if(temp>=256 && temp<512) {dlm(5);dnm(temp,256,16);}
      if(temp>=512 && temp<1024) {dlm(6);dnm(temp,512,32);}
      if(temp>=1024 && temp<2048) {dlm(7);dnm(temp,1024,64);}

}


void dlm(int n)          //段落码
{
switch(n)
{
case 0:code1[1]='0';code1[2]='0';code1[3]='0';break;
case 1:code1[1]='0';code1[2]='0';code1[3]='1';break;
       case 2:code1[1]='0';code1[2]='1';code1[3]='0';break;
case 3:code1[1]='0';code1[2]='1';code1[3]='1';break;
       case 4:code1[1]='1';code1[2]='0';code1[3]='0';break;
case 5:code1[1]='1';code1[2]='0';code1[3]='1';break;
       case 6:code1[1]='1';code1[2]='1';code1[3]='0';break;
case 7:code1[1]='1';code1[2]='1';code1[3]='1';break;

}
}
void dnm(int x,int m,int n)       //段内码
{
int l=(x-m)/n;
switch(l)
{
case 0:code1[4]='0';code1[5]='0';code1[6]='0';code1[7]='0';break;
case 1:code1[4]='0';code1[5]='0';code1[6]='0';code1[7]='1';break;
       case 2:code1[4]='0';code1[5]='0';code1[6]='1';code1[7]='0';break;
case 3:code1[4]='0';code1[5]='0';code1[6]='1';code1[7]='1';break;
       case 4:code1[4]='0';code1[5]='1';code1[6]='0';code1[7]='0';break;
case 5:code1[4]='0';code1[5]='1';code1[6]='0';code1[7]='1';break;
       case 6:code1[4]='0';code1[5]='1';code1[6]='1';code1[7]='0';break;
case 7:code1[4]='0';code1[5]='1';code1[6]='1';code1[7]='1';break;
       case 8:code1[4]='1';code1[5]='0';code1[6]='0';code1[7]='0';break;
case 9:code1[4]='1';code1[5]='0';code1[6]='0';code1[7]='1';break;
       case 10:code1[4]='1';code1[5]='0';code1[6]='1';code1[7]='0';break;
case 11:code1[4]='1';code1[5]='0';code1[6]='1';code1[7]='1';break;
       case 12:code1[4]='1';code1[5]='1';code1[6]='0';code1[7]='0';break;
case 13:code1[4]='1';code1[5]='1';code1[6]='0';code1[7]='1';break;
       case 14:code1[4]='1';code1[5]='1';code1[6]='1';code1[7]='0';break;
case 15:code1[4]='1';code1[5]='1';code1[6]='1';code1[7]='1';break;
case 16:code1[4]='1';code1[5]='1';code1[6]='1';code1[7]='1';break;
default:break;
}

}

int jdlm(int x,int y[8])       //解段落码
{
     int a;
     switch(x)
     {
     case 0:a=0;y[0]=1;break;
     case 1:a=16;y[1]=1;break;
     case 2:a=32;y[2]=2;break;
     case 3:a=64;y[3]=4;break;
     case 4:a=128;y[4]=8;break;
     case 5:a=256;y[5]=16;break;
     case 6:a=512;y[6]=32;break;
     case 7:a=1024;y[7]=64;break;
     default:break;
     }
     //printf("起点：%d\n间隔：%d\n",a,y[x]);
     return (a);
}

float  jiema()          //解码: 从文件读取编码并解码
{
int i,c,m,tmp[8];
float t,n;
char b;
for(i=0;i<8;i++)
{
if(code2[i]=='1')
tmp[i]=1;
else 
tmp[i]=0;
}	
c=tmp[1]*4+tmp[2]*2+tmp[3];
m=jdlm(c,s);         //调用解段落码子函数
n=tmp[7]+tmp[6]*2+tmp[5]*4+tmp[4]*8+0.5;
t=m+n*s[c];
if(code2[7]==0)
     t=-t;
return t;
}











BOOL CMyDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	m_func="sin(t)";
	
	m_OutPath="c:\\";// TODO: Add extra initialization here
	m_time=1.0;
	UpdateData(false);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMyDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CMyDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CMyDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

double fun1(double x)
{
	return cos(x);
}

double fun2(double x)
{
	if(x==0.0)
		return 1.0;
	else 
		return sin(x)/x;
}

double fun3(double x)
{
	return sin(x);
}

double (*fun)(double);



void CMyDlg::OnButton1() 
{
    UpdateData(true);
	int nSel=m_choosefunc.GetCurSel();
    switch(nSel)
	{
	case 0:	fun=fun1;break;
	case 1: fun=fun2;break;
	case 2: fun=fun3;break;
	default:break;
	}
	
	CString str_code;//code 
	CStdioFile myfile;
    CFileException mExcept; 
    int i=1;
    LARGE_INTEGER t1, t2, tc,f;
	QueryPerformanceCounter(&t1);
	QueryPerformanceFrequency(&f);
    tc.QuadPart=m_time*f.QuadPart; //time
    myfile.Open("c:\\hj.xls",CFile::modeWrite|CFile::modeCreate,&mExcept);
	while(t2.QuadPart-t1.QuadPart<tc.QuadPart)
	{    
		QueryPerformanceCounter(&t2);
		if(1000000*(t2.QuadPart-t1.QuadPart)/f.QuadPart>=125*i)
		{
			encode(fun(1000000*(t2.QuadPart-t1.QuadPart)/f.QuadPart));
			myfile.WriteString("编码:");
            myfile.WriteString(code1);
            myfile.WriteString("\n");
         	i++;
		}
	
        QueryPerformanceCounter(&t2);
	}


	myfile.Close();
	MessageBox("OK!");
}




void CMyDlg::OnButton2()  //jiema
{
	CString str_t;
CStdioFile filein,fileout;
char temp[9];
filein.Open("c:\\hj.xls",CFile::modeRead);
fileout.Open("c:\\out.xls",CFile::modeWrite|CFile::modeCreate);
filein.Seek(5,CFile::begin);
	while(filein.GetLength()>filein.GetPosition())    //文件指针小于文件长度时循环
	{
     for(int i=0;i<8;i++)
	 filein.Read(&code2[i],1);
	 str_t.Format("%f",jiema());                      //double型转换为字符串便于输出
	 fileout.WriteString("编码 ");
	 fileout.WriteString(code2);
	 fileout.WriteString(" ");                        //写入空格
	 fileout.WriteString("量化值 ");
     fileout.WriteString(str_t);
	 fileout.WriteString("\n");                      //写入回车
	 filein.Seek(7,CFile::current);                  //注意指针的修改
     

	}

filein.Close();
fileout.Close();
MessageBox("OK!");
}

void CMyDlg::OnMenuitem32771() 
{

}


void CMyDlg::OnMenuitem32774() 
{
Introduction myIntr;
myIntr.DoModal();	
}