showstreamdlg.cpp

基于SDK的图像采集程序

// ShowStreamDlg.cpp : implementation file
//

#include "stdafx.h"
#include "multicard.h"
#include "ShowStreamDlg.h"
#include "ChildFrm.h"

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

/*typedef struct tagSTREAMNOTIFYPARAME
{
	int iDlgCount;
	CShowStreamDlg * pDlgArray;
} STREAMNOTIFYPARAME;*/


#define WIDTH  (320)//(160)
#define HEIGHT (240)//(120)修改数据流回调显示的大小   02 10 16 23:29


/////////////////////////////////////////////////////////////////////////////
// CShowStreamDlg dialog


CShowStreamDlg::CShowStreamDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CShowStreamDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CShowStreamDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT

	m_bIs4WayCard = false;	//是否是四路实时卡
	m_iShowWay=0;			//如果是四路实时卡，显示第几路图像
	Prsed=FALSE;
	counts=0;
	//pLastFrame=new BYTE[320*240*3];

}


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


BEGIN_MESSAGE_MAP(CShowStreamDlg, CDialog)
	//{{AFX_MSG_MAP(CShowStreamDlg)
	ON_WM_SIZE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CShowStreamDlg message handlers

BOOL CShowStreamDlg::OnInitDialog() 
{
	//将客户区窗口的大小改为 160 x 120
	
	CDialog::OnInitDialog();

	

	RECT rcFrame, rcClient;
	int w, h;
	int width, height;
	GetWindowRect(&rcFrame);
	GetClientRect(&rcClient);
	w = (rcFrame.right-rcFrame.left) - (rcClient.right-rcClient.left);
	h = (rcFrame.bottom-rcFrame.top) - (rcClient.bottom-rcClient.top);
	
	width =WIDTH +  w;//rcClient.right-rcClient.left+
	height = HEIGHT + h;///客户区的边框风格与图像框相同rcClient.bottom-rcClient.top+
   
	SetWindowPos(NULL, -1, -1, width, height, SWP_NOZORDER|SWP_NOMOVE);//SWP_NOSIZE|SWP_NOZORDER| SWP_NOACTIVATE|SWP_SHOWWINDOW

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CShowStreamDlg::OnOK()
{
}
void CShowStreamDlg::OnCancel()
{
}

void CShowStreamDlg::ShowStream(const BITMAPINFO * pInfo, const BYTE * pBits)
{
	if(!pInfo || !pBits)
		return;

	HDC hdc = ::GetDC(m_hWnd);
	int w = pInfo->bmiHeader.biWidth;
	int h = pInfo->bmiHeader.biHeight;
	 
	RECT  rcClient;

    GetClientRect(&rcClient);///获得当前的客户区大小，以适应窗口的拖动
	int ww = (rcClient.right-rcClient.left);//2002.11.14 12:21  ^_^
	int hh = ww*3/4 ;//(rc.bottom-rc.top)
   
	

	/*float rt=0;float rt1,rt2;
	rt1=ww/320;rt2=hh/240;
	rt=(rt1>=rt2)?rt2:rt1;
	ww=(int)rt*320;
	hh=(int)rt*240;*/

	SetStretchBltMode(hdc, COLORONCOLOR);

	//不是四路实时卡
	if(!m_bIs4WayCard)
	{
		StretchDIBits(hdc,
					0, 0,ww,hh, //WIDTH, HEIGHT,
					0, 0, w, h,
					pBits, pInfo, DIB_RGB_COLORS, SRCCOPY);
	}
	//是四路实时卡
	else
	{
		POINT ptS[4] = { {0,h/2}, {w/2,h/2}, {0,0}, {w/2,0} };
		StretchDIBits(hdc,
				0, 0, WIDTH, HEIGHT,
				ptS[m_iShowWay].x, ptS[m_iShowWay].y, w/2, h/2,
				pBits, pInfo, DIB_RGB_COLORS, SRCCOPY);
	}

	::ReleaseDC(m_hWnd, hdc);
}

//设置是否是四路实时卡，
//如果是四路实时卡，设置显示第几路图像
void CShowStreamDlg::SetShowWay(int iCardID, bool bIs4WayCard, int iWay/*=0*/)
{
	m_bIs4WayCard = bIs4WayCard;

	if(m_bIs4WayCard && iWay>=0 && iWay<=3)
		m_iShowWay = iWay;
	else
		m_iShowWay = 0;

	char szCaption[100];
	if(m_bIs4WayCard)
		sprintf(szCaption, "%d号卡 (路数%d)", iCardID, m_iShowWay);
	else
		sprintf(szCaption, "%d号卡: 数据流回调显示", iCardID);
	SetWindowText(szCaption);
}

void CShowStreamDlg::DisplayGrayImage(const BITMAPINFO *pInfo, const BYTE *pBits)
{
	if(!pInfo || !pBits)
			return ;

		HDC hdc = ::GetDC(m_hWnd);
		int w = pInfo->bmiHeader.biWidth;
		int h = pInfo->bmiHeader.biHeight;
		BYTE *GrayImage=(BYTE *)(new BYTE[w*h*3]);///必须预先分配内存大小

		SetStretchBltMode(hdc, COLORONCOLOR);
		for (int i=0;i<h;i++)
			for(int j=0;j<w;j++)
			{
				GrayImage[i*3*w+j*3+0]=(const BYTE)(pBits[i*3*w+j*3+0]*0.299+pBits[i*3*w+j*3+1]*0.587+pBits[i*3*w+j*3+2]*0.114);
				GrayImage[i*3*w+j*3+1]=GrayImage[i*3*w+j*3+0];
				GrayImage[i*3*w+j*3+2]=GrayImage[i*3*w+j*3+0];
			}
			StretchDIBits(hdc,
						0, 0, w, h,///目的区域大小(显示面积)
						0, 0, w, h,  ///源区域的大小(要显示的原图像中的那一部分）
						GrayImage/*plastFrame*/, pInfo, DIB_RGB_COLORS, SRCCOPY);
		
		delete [] GrayImage;///释放内存
		
		::ReleaseDC(m_hWnd, hdc);
	

}




void CShowStreamDlg::OnSize(UINT nType, int cx, int cy) 
{
	CDialog::OnSize(nType, cx, cy);
	RECT rcFrame, rcClient;

    GetClientRect(&rcClient);///获得当前的客户区大小，以适应窗口的拖动
	int ww = (rcClient.right-rcClient.left);//2002.11.14 12:21  ^_^
	int hh = ww*3/4 ;//(rc.bottom-rc.top)
   
	int w1, h1;
	int width, height;
	GetWindowRect(&rcFrame);

	w1 = (rcFrame.right-rcFrame.left) - (rcClient.right-rcClient.left);
	h1 = (rcFrame.bottom-rcFrame.top) - (rcClient.bottom-rcClient.top);
	
	width =ww +  w1;//rcClient.right-rcClient.left+
	height = hh + h1;///客户区的边框风格与图像框相同rcClient.bottom-rcClient.top+
	SetWindowPos(NULL, -1, -1, width, height, SWP_NOZORDER|SWP_NOMOVE);
	//MessageBox("changed");
	
	// TODO: Add your message handler code here
	
}