www.gusucode.com > VC++ 摄像头视频采集与回放源程序-源码程序 > VC++ 摄像头视频采集与回放源程序-源码程序/code/VideoEXEDlg.cpp

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// VideoEXEDlg.cpp : implementation file
//

#include "stdafx.h"
#include "VideoEXE.h"
#include "VideoEXEDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CVideoEXEDlg dialog

CVideoEXEDlg::CVideoEXEDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CVideoEXEDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CVideoEXEDlg)
		// 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);
}

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

BEGIN_MESSAGE_MAP(CVideoEXEDlg, CDialog)
	//{{AFX_MSG_MAP(CVideoEXEDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_DISPLAY, OnDisplay)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CVideoEXEDlg message handlers

BOOL CVideoEXEDlg::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
	this->InitCaptureFormat();

	m_hCaptureWnd=::capCreateCaptureWindow("Capture Window",WS_VISIBLE|WS_CHILD,10,10,320,240,this->m_hWnd,1);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CVideoEXEDlg::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 CVideoEXEDlg::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 CVideoEXEDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CVideoEXEDlg::OnDisplay() 
{
	// TODO: Add your control notification handler code here
	//typedef void (WINAPI * DISPLAY)(HWND hWnd,BITMAPINFO m_InInfo,COMPVARS m_CV);
	typedef void (* DISPLAY)(HWND hWnd,BITMAPINFO m_InInfo,COMPVARS m_CV);
	HINSTANCE hInst;
	hInst = ::LoadLibrary ("VideoDLL.dll");
	if(hInst==NULL)
	{
		AfxMessageBox("Fail to load MyVideo.dll");
	}
	else
	{  	
		InitCompressor();
		DISPLAY lpDisplay;
		lpDisplay = (DISPLAY)GetProcAddress (hInst,"Display");
		if(lpDisplay!=(DISPLAY)NULL)
			(lpDisplay)(m_hCaptureWnd,m_InInfo,m_CV);
		
		FreeLibrary(hInst);
        UninitCompressor();
	}
	
}

void CVideoEXEDlg::InitCaptureFormat()
{
	m_InInfo.bmiHeader.biBitCount=24;//RGB共24位
	m_InInfo.bmiHeader.biClrImportant=0;//所有要使用的颜色都是重要颜色 	
	m_InInfo.bmiHeader.biClrUsed=0;//为0则：位图应用biBitCount所指定的最大颜色值
	m_InInfo.bmiHeader.biCompression=BI_RGB;//BI_BITFIELDS;//非压缩模式。真彩色图像不能进行任何压缩
	m_InInfo.bmiHeader.biHeight=240;
	m_InInfo.bmiHeader.biPlanes=1;//代表目标设备的平面数必须是1
	m_InInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);//结构体所占空间大小
	m_InInfo.bmiHeader.biSizeImage=0;//为BI_RGB模式则必须设置为0
	m_InInfo.bmiHeader.biWidth=320;
	m_InInfo.bmiHeader.biXPelsPerMeter=0;
	m_InInfo.bmiHeader.biYPelsPerMeter=0;
	//目标设备水平及竖直方向的分辨率 pixel per meter

}

void CVideoEXEDlg::InitCompressor()
{
	memset(&m_CV,0,sizeof(m_CV));
	m_CV.cbSize=sizeof(m_CV);	
    if(!ICCompressorChoose(this->m_hWnd,0,(BITMAPINFO*)&m_InInfo,NULL,&m_CV,"请选择压缩器"))
		AfxMessageBox("Compressor Choosing Error! in InitCompressor");

	// 压缩效率如下：
	// cinepak codec by radius ------->m_1OutActSize=22548
	// intel indeo(R) video R3 100%--->m_1OutActSize=18387  
	// intel IYUV codec--------------->m_1OutActSize=115200
	// microsoft video1--------------->m_1OutActSize=27278 some error occurs
	// Divx MPEG--4 video codec------->m_1OutActSize=7044 
	//////////////////////////////////////////////////////////////////////////
	//////////////////////////////////////////////////////////////////////////
	
}

void CVideoEXEDlg::UninitCompressor()
{

	if (m_CV.hic!=NULL)
	{
		::ICSeqCompressFrameEnd(&m_CV);
		ICCompressorFree(&m_CV);
		ICClose(m_CV.hic);
	}
}