abdlg.cpp

LCD模拟程序

// ABDlg.cpp : implementation file
//

#include "stdafx.h"
#include "AB.h"
#include "ABDlg.h"

#include "Mmsystem.h"
#include<cmath>      // double pow(double, double);
  
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
//float   m_nData[4800];
float g_nData[10000000];
int i;
int x,y;
//	int y,y0,x,ymax=200,ymin=200;

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
int N_Buffer=0;
class CAboutDlg : public CDialog
{
public:
	CAboutDlg();
	int num;         // 样本数
    LONG* data;      // 样本数据
    LONG *Ldata, *Rdata;     // 双声道数据

	
// 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()

/////////////////////////////////////////////////////////////////////////////
// CABDlg dialog

CABDlg::CABDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CABDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CABDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	bRecording=FALSE;
	bPlaying=FALSE;
	bReverse=FALSE;
	bPaused=FALSE;
	bEnding=FALSE;
	bTerminating=FALSE;
	dwDataLength=0;
	dwRepetitions=1;

}

void CABDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CABDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CABDlg, CDialog)
	//{{AFX_MSG_MAP(CABDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_REC_START, OnRecStart)
	ON_BN_CLICKED(IDC_REC_STOP, OnRecStop)
	ON_BN_CLICKED(IDC_PLAY_START, OnPlayStart)
	ON_BN_CLICKED(IDC_PLAY_PAUSE, OnPlayPause)
	ON_BN_CLICKED(IDC_PLAY_STOP, OnPlayStop)
	ON_WM_DESTROY()
	ON_WM_TIMER()
	ON_MESSAGE(MM_WIM_OPEN,OnMM_WIM_OPEN)
	ON_MESSAGE(MM_WIM_DATA,OnMM_WIM_DATA)
	ON_MESSAGE(MM_WIM_CLOSE,OnMM_WIM_CLOSE)
	ON_MESSAGE(MM_WOM_OPEN,OnMM_WOM_OPEN)
	ON_MESSAGE(MM_WOM_DONE,OnMM_WOM_DONE)
	ON_MESSAGE(MM_WOM_CLOSE,OnMM_WOM_CLOSE)

	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CABDlg message handlers

BOOL CABDlg::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
	
	// TODO: Add extra initialization here
	pWaveHdr1=reinterpret_cast<PWAVEHDR>(malloc(sizeof(WAVEHDR)));
	pWaveHdr2=reinterpret_cast<PWAVEHDR>(malloc(sizeof(WAVEHDR)));
	pSaveBuffer = reinterpret_cast<PBYTE>(malloc(1));
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CABDlg::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 CABDlg::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
	{
		CRect rect;
     	CPaintDC dc(this);
	    GetClientRect(rect);
	    dc.FillSolidRect(rect,RGB(0,128,255));    //设置背景颜色
		CDialog::OnPaint();

	}
}

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


void CABDlg::OnRecStart() 
{
	// TODO: Add your control notification handler code here
	pBuffer1=(PBYTE)malloc(INP_BUFFER_SIZE);
	pBuffer2=(PBYTE)malloc(INP_BUFFER_SIZE);
	
	//*pBuffer1=malloc(INP_BUFFER_SIZE);
	//	*pBuffer2=malloc(INP_BUFFER_SIZE);
	
	if (!pBuffer1 || !pBuffer2)
	{
		if (pBuffer1) free(pBuffer1);
		if (pBuffer2) free(pBuffer2);
		MessageBeep(MB_ICONEXCLAMATION);
		AfxMessageBox("Memory erro!");
		return ;
	}
	
	//open waveform audo for input
	
	waveform.wFormatTag=WAVE_FORMAT_PCM;
	waveform.nChannels=1;
	waveform.nSamplesPerSec=11025;
	waveform.nAvgBytesPerSec=11025;
	waveform.nBlockAlign=1;
	waveform.wBitsPerSample=8;
	waveform.cbSize=0;
	
	//WaveInStart启动波形输入设备，即可开始进行数据采集，在采集的过程中，一旦有缓冲区被采样数据填满，
	//系统就回调WaveInOpen中指定的dwCallback函数
	//

	//  PBYTE pBuffer1,pBuffer2; //保存输入数据的两个缓冲区
	if (waveInOpen(&hWaveIn,WAVE_MAPPER,&waveform,(DWORD)this->m_hWnd,NULL,CALLBACK_WINDOW)) 
	{
		free(pBuffer1);
		free(pBuffer2);
		MessageBeep(MB_ICONEXCLAMATION);
		AfxMessageBox("Audio can not be open!");
	}
	//在Windows环境，可以用GlobalAllocPtr来获取一段内存空间，但是由于Windows操作系统采用了虚拟存储管理机制，
	//这块内存空间随时有可能会被置换到硬盘上，读写硬盘所耗费的时间会造成采样的不连续。
	//因此，在将缓冲区送往波形输入设备之前，必须调用WaveInPrepareHeader函数以保证缓冲区不会被置换到硬盘上。
	//当然在用GlobalFreeP tr来释放缓冲区之前，必须先要用WaveInUnprepareHeader函数来解除这种保护。
	
	pWaveHdr1->lpData=(LPTSTR)pBuffer1;
	pWaveHdr1->dwBufferLength=INP_BUFFER_SIZE;
	pWaveHdr1->dwBytesRecorded=0;
	pWaveHdr1->dwUser=0;
	pWaveHdr1->dwFlags=0;
	pWaveHdr1->dwLoops=1;
	pWaveHdr1->lpNext=NULL;
	pWaveHdr1->reserved=0;
	
	waveInPrepareHeader(hWaveIn,pWaveHdr1,sizeof(WAVEHDR));//保证缓冲区不会被置换到硬盘上
	
	pWaveHdr2->lpData=(LPTSTR)pBuffer2;
	pWaveHdr2->dwBufferLength=INP_BUFFER_SIZE;
	pWaveHdr2->dwBytesRecorded=0;
	pWaveHdr2->dwUser=0;
	pWaveHdr2->dwFlags=0;
	pWaveHdr2->dwLoops=1;
	pWaveHdr2->lpNext=NULL;
	pWaveHdr2->reserved=0;
	
	waveInPrepareHeader(hWaveIn,pWaveHdr2,sizeof(WAVEHDR));  //保证缓冲区不会被置换到硬盘上
	
	//////////////////////////////////////////////////////////////////////////
	pSaveBuffer = (PBYTE)realloc (pSaveBuffer, 1) ;
	//   //pSaveBuffer是外部定义的一个临时缓存
	//	pSaveBuffer = (int)realloc (pSaveBuffer, 1) ;
	// Add the buffers
	
	waveInAddBuffer (hWaveIn, pWaveHdr1, sizeof (WAVEHDR)) ;//waveInAddBuffer ：向声音输入设备发送缓冲区，双缓存轮换采集
	waveInAddBuffer (hWaveIn, pWaveHdr2, sizeof (WAVEHDR)) ;//双缓存轮换采集
	
	// Begin sampling
	
	bRecording = TRUE ;
	bEnding = FALSE ;
	dwDataLength = 0 ;
	waveInStart (hWaveIn) ; //waveInStart ：开始声音输入设备工作


}

void CABDlg::OnRecStop() 
{
	// TODO: Add your control notification handler code here
	TRACE("rec stop \n");
	bEnding=TRUE;
	//Sleep(1500);

	waveInReset(hWaveIn);//waveInReset ：停止声音输入设备工作
	
}
void CABDlg::draw()
{
	//////////////////////////////////////////////////////
	//画曲线
	
	static const int xCon = 13;
	static const int yCon = 150;
	static const int wCon = 1000;
	static const int hCon = 400;
	 int y0,ymax=200,ymin=200;
	 
	CClientDC dc(this);
	CBitmap   Bitmap;
	CBitmap * pbmOld = NULL;  
 	CDC         dcMem;
 	dcMem.CreateCompatibleDC(&dc);  
	Bitmap.CreateCompatibleBitmap(&dc,wCon,hCon);
// 	CreateCompatibleBitmap函数功能：该函数创建与指定的设备环境相关的设备兼容的位图。
// 		　　函数原型：HBITMAP CreateCompatibleBitmap(HDC hdc,int nWidth,int nHeight)；
// 		　　参数：
// 		　　hdc： 设备环境句柄。
// 		　　nWidth：指定位图的宽度，单位为像素。
// 　　nHeight：指定位图的高度，单位为像素
	pbmOld = dcMem.SelectObject(&Bitmap);
	dcMem.PatBlt(0,0,wCon,hCon, WHITENESS);  
// 	PatBlt函数功能：该函数使用当前选入指定设备环境中的刷子绘制给定的矩形区域。通过使用给出的光栅操作来对该刷子的颜色和表面颜色进行组合。
// 		　函数原型：BOOL PatBlt(HDC hdc, int nXLeft, int nYLeft, int nWidth, int nHeight, DWORD dwRop)；
// 		　　参数：
// 		　　hdc：设备环境句柄。
// 		　　nXLeft：指定要填充的矩形左上角的X轴坐标，坐标按逻辑单位表示。
// 		　　nYLeft：指定要填充的矩形左上角的Y轴坐标，坐标按逻辑单位表示。
// 		　　nWidth：指定矩形的宽度，按逻辑单位表示宽度。
// 		　　nHeight：指定矩形的高度，按逻辑单位表示高度。
// 　　dwRop：指定光栅操作码。
	y0=yCon+150;
	dcMem.MoveTo(-20,y0);
	// display incomming signal--key idea!
	if(N_Buffer==0)
	{
		pdraw=pBuffer1;
		N_Buffer=1;}
	else{
		pdraw=pBuffer2;
		N_Buffer=0;
	}
	for(x =4 ; x < 2048; x++)  // display Input
	{
		y=2*pdraw[x];	//pBuffer1[x];/* if (y > ymax)	 { ymax = y; } if (y < ymin) { ymin = y; }*/  
		dcMem.LineTo(x/4, (y0-y*0.5));
	

	}
		// y0=yCon+150;
	y0=yCon+150;//  dcMem.MoveTo(0,y0);
	
	for(x =0 ; x < 2048; x++)  // display Input
	{
	y=2*pdraw[x+2048];//pBuffer1[x+2048];
		if (y > ymax)
		{
			ymax = y;
		}
		if (y < ymin)
		{
			ymin = y;
		}
		dcMem.LineTo(512+x/4, (y0-y*0.5));
	} 
	CString str;
	str.Format("%d",ymax);
	dcMem.TextOut(600,200,str);