capture1view.cpp

利用VFW在USB上捕捉多个静态图片

// capture1View.cpp : implementation of the CCapture1View class
//

#include "stdafx.h"
#include "capture1.h"

#include "capture1Doc.h"
#include "capture1View.h"
#include <string.h>
#pragma comment( lib, "vfw32.lib" )
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CCapture1View

IMPLEMENT_DYNCREATE(CCapture1View, CFormView)

BEGIN_MESSAGE_MAP(CCapture1View, CFormView)
	//{{AFX_MSG_MAP(CCapture1View)
	ON_COMMAND(ID_FILE_OPEN, OnFileOpen)
	ON_BN_CLICKED(IDC_Startcap, OnStartcap)
	ON_BN_CLICKED(IDC_FREEZED, OnFreezed)
	ON_BN_CLICKED(IDC_SAVE, OnSave)
	ON_BN_CLICKED(IDC_FORMAT, OnFormat)
	ON_BN_CLICKED(DC_SOURCE, OnSource)
	ON_BN_CLICKED(IDC_DISCONNECT, OnDisconnect)
	ON_BN_CLICKED(IDC_FREEZED, OnFreezed)
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CFormView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CFormView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CFormView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCapture1View construction/destruction

CCapture1View::CCapture1View()
	: CFormView(CCapture1View::IDD)
{
	//{{AFX_DATA_INIT(CCapture1View)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// TODO: add construction code here
	lpImage=(LPBYTE)new BYTE[1280*960*3];  //为lpImage指针申请内存
	BmpInfo.biSize=40;			    //DWORD   
    BmpInfo.biWidth=640;		    //LONG   
    BmpInfo.biHeight=480;			//LONG    
    BmpInfo.biPlanes=1;			    //WORD    
    BmpInfo.biBitCount=24;			//WORD   
    BmpInfo.biCompression=0;		//DWORD   
    BmpInfo.biSizeImage=0;		    //DWORD   
    BmpInfo.biXPelsPerMeter=2835;   //LONG    
    BmpInfo.biYPelsPerMeter=2835;   //LONG    
    BmpInfo.biClrUsed=0;			//DWORD  
    BmpInfo.biClrImportant=0;		//DWORD

	strcpy(Bmp.PathName,"");
	Doc=NULL;                       //不能在此初始化文档指针

}

CCapture1View::~CCapture1View()
{
	delete[] lpImage;
}

void CCapture1View::DoDataExchange(CDataExchange* pDX)
{
	CFormView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCapture1View)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BOOL CCapture1View::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CFormView::PreCreateWindow(cs);
}

void CCapture1View::OnInitialUpdate()
{
	CFormView::OnInitialUpdate();
	GetParentFrame()->RecalcLayout();
	ResizeParentToFit();
	if(Doc==NULL) Doc=GetDocument();  //在此初始化文档指针

}

/////////////////////////////////////////////////////////////////////////////
// CCapture1View printing

BOOL CCapture1View::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CCapture1View::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CCapture1View::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

void CCapture1View::OnPrint(CDC* pDC, CPrintInfo* /*pInfo*/)
{
	// TODO: add customized printing code here
}

/////////////////////////////////////////////////////////////////////////////
// CCapture1View diagnostics

#ifdef _DEBUG
void CCapture1View::AssertValid() const
{
	CFormView::AssertValid();
}

void CCapture1View::Dump(CDumpContext& dc) const
{
	CFormView::Dump(dc);
}

CCapture1Doc* CCapture1View::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CCapture1Doc)));
	return (CCapture1Doc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CCapture1View message handlers

short CCapture1View::LoadBmpFile()
{
	CFile  f;
    BOOL   OK;
	
    OK=f.Open( Bmp.PathName,
               CFile::modeRead|CFile::typeBinary|CFile::shareExclusive,
               NULL
    	     );
	if(!OK) return(-1);

    f.Read(&FileHead,sizeof(FileHead));
	if(FileHead.bfType!=0x4d42) {
       f.Close();
	   return -2;
	}
    f.Read(&BmpInfo,sizeof(BmpInfo));

	if(BmpInfo.biWidth>1280 || BmpInfo.biHeight>960) return(-3);

	short   x,y,z;
	z=(BmpInfo.biWidth/4)*4+(BmpInfo.biWidth%4==0 ? 0 : 4);
	f.Seek(FileHead.bfOffBits,0);
    f.Read(lpImage,BmpInfo.biHeight*z*3);
    f.Close();
    
	for(y=BmpInfo.biHeight-1;y>=0;y--){
		memcpy(Doc->C3[y],lpImage+(BmpInfo.biHeight-1-y)*z*3,z*3);
		for(x=0;x<BmpInfo.biWidth;x++){
			Doc->pix[y][x]=(Doc->C3[y][x].R*77+Doc->C3[y][x].G*150+Doc->C3[y][x].B*29)>>8;///256;
		}
	}
	
	return(1);

}

void CCapture1View::OnDraw(CDC *pDC)
{
	//----------- 显示图象--------------------
	if(Bmp.PathName[0]!='\0')
	{

        LPBITMAPINFOHEADER  lpBMIH;
        lpBMIH=&BmpInfo;

        pDC->SetStretchBltMode(COLORONCOLOR);//清除显示区
		::StretchDIBits(pDC->GetSafeHdc(),
			    510,11,352,288,
			    0,0,BmpInfo.biWidth,BmpInfo.biHeight,
			    lpImage,(LPBITMAPINFO)lpBMIH,
			    DIB_RGB_COLORS,SRCCOPY
			   );
	}
   


}

void CCapture1View::OnFileOpen() 
{
	// TODO: Add your command handler code here
    CFileDialog  file( TRUE,        //打开文件
		         _T("*.BMP,"),      
				 Bmp.PathName,      //初始显示在文件名编辑框中的文件名
				 OFN_HIDEREADONLY|OFN_EXPLORER,
				 _T("图像文件(*.BMP,)|*.BMP;|"),
				 NULL
				);
	if(file.DoModal( )==IDCANCEL)  return ;
    strcpy(Bmp.PathName,file.GetPathName());
	BeginWaitCursor();
	short  OK;
    char drive[_MAX_DRIVE];   
	char dir[_MAX_DIR];
	char fname[_MAX_FNAME];
	char ext[_MAX_EXT];
	_splitpath(Bmp.PathName, drive, dir, fname, ext);
	if(!stricmp(ext,".Bmp"))
	{
		OK=LoadBmpFile();
	}
	else  OK=-1;
	if(OK==-1)      { MessageBox("不能打开文件！","错误",0);  return; }
	else if(OK==-2) { MessageBox("文件格式错！","错误",0);    return; }
	else if(OK==-3) { MessageBox("图像太大，内存不够！","错误",0);      return; }

	char txt[20],Title[100];
	strcpy(Title,Bmp.PathName); strcat(Title,"(" );
    itoa(BmpInfo.biWidth,txt,10); strcat(Title,txt); strcat(Title," X " );
	itoa(BmpInfo.biHeight,txt,10); strcat(Title,txt); strcat(Title,")" );
    Doc->SetTitle(Title);
	Doc->UpdateAllViews(NULL);   //触发所有视图类的Update()函数


	
}

void CCapture1View::OnStartcap() 
{
	if(GetDlgItem(IDC_FREEZED)-IsWindowEnabled())
       capDriverDisconnect(m_hCapWnd);//如果当前状态是捕捉画面，则断开连接



   m_hCapWnd=capCreateCaptureWindow((LPTSTR)TEXT("摄像头图像捕捉程序"),
		WS_CHILD|WS_VISIBLE|WS_EX_CLIENTEDGE|WS_EX_DLGMODALFRAME,
		40,11,352,288,
		m_hWnd,0); // 设置预示窗口
	ASSERT(m_hCapWnd);
	
	if(capDriverConnect(m_hCapWnd,0))
	{
		// 连接第0 号驱动器
		m_bInit=TRUE;
		
		//得到驱动器的性能
		capDriverGetCaps(m_hCapWnd,sizeof(CAPDRIVERCAPS), &m_CapDrvCap);
		
		if(m_CapDrvCap.fCaptureInitialized)
		{// 如果初始化成功
			capGetStatus(m_hCapWnd, &m_CapStatus,sizeof(m_CapStatus)); // 得到驱动器状态
			capPreviewRate(m_hCapWnd,30); // 设置预示帧频
			capPreview(m_hCapWnd,TRUE); // 设置预示方式
		}
		else{// 初始化未成功
			AfxMessageBox("摄像头初始化失败!");
			AfxGetMainWnd()->PostMessage(WM_CLOSE);
		}
	}
	else{// 未能连接到驱动器
		AfxMessageBox("与摄像头连接失败!");
		//	AfxGetMainWnd()->PostMessage(WM_CLOSE);
	}
 
    
}

void CCapture1View::OnFreezed() 
{
	// TODO: Add your control notification handler code here
	capPreview(m_hCapWnd,FALSE);// 冻结画面
	capGrabFrameNoStop(m_hCapWnd);
	capEditCopy(m_hCapWnd);//重复捕捉画面
	
}

void CCapture1View::OnSave() 
{
	// TODO: Add your control notification handler code here
	CTime t=CTime::GetCurrentTime(); 
    CString str;   
    str=t.Format("%Y%B%d%H%M%S");   
    str+=".bmp"; 
	char  str1[255];   
    strcpy(str1,str);   
    capFileSaveDIB(m_hCapWnd,str1); 
	
}

void CCapture1View::OnFormat() 
{
    capDlgVideoFormat(m_hCapWnd);//设置图像的格式
}

void CCapture1View::OnSource() 
{
    capDlgVideoSource(m_hCapWnd);//设置图像源

}

void CCapture1View::OnDisconnect() 
{
	capDriverDisconnect(m_hCapWnd);//断开连接	
}