kinescopedlg.cpp

《Visual C++视频技术方案宝典》配套光盘

// KinescopeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Kinescope.h"
#include "KinescopeDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CKinescopeDlg dialog

CKinescopeDlg::CKinescopeDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CKinescopeDlg::IDD, pParent)
{
	pCompress = NULL;
	//{{AFX_DATA_INIT(CKinescopeDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDI_ICON1);
}

void CKinescopeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CKinescopeDlg)
	DDX_Control(pDX, IDC_FILEPATH, m_File);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CKinescopeDlg, CDialog)
	//{{AFX_MSG_MAP(CKinescopeDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_KINSCOPE, OnKinscope)
	ON_BN_CLICKED(IDC_STOP, OnStop)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CKinescopeDlg message handlers

BOOL CKinescopeDlg::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
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CKinescopeDlg::OnCancel() 
{
	if (pCompress != NULL)
	{
		pCompress->Stop();
		pCompress->Release();
		
	}
	CDialog::OnCancel();
}

void CKinescopeDlg::OnOK() 
{
	CFileDialog FileDlg(FALSE,"AVI",NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,"视频文件|*.avi|",this);
	if (FileDlg.DoModal()==IDOK)
	{
		CString str;
		str = FileDlg.GetPathName();
		m_File.SetWindowText(str);
	}	
}

//查找引脚
IPin* CKinescopeDlg::FindPin(IBaseFilter *pFilter, PIN_DIRECTION dir)
{
	IEnumPins* pEnumPins;
	IPin* pOutpin;
	PIN_DIRECTION pDir;
	pFilter->EnumPins(&pEnumPins);
	while (pEnumPins->Next(1,&pOutpin,NULL)==S_OK)
	{
		pOutpin->QueryDirection(&pDir);
		if (pDir==dir)
		{
			return pOutpin;
		}
	}
	return 0;
}

void CKinescopeDlg::OnKinscope() 
{
	CString str;
	m_File.GetWindowText(str);
	if (str.IsEmpty())
	{
		MessageBox("请选择或输入文件");
		return;
	}

	ICaptureGraphBuilder2 * pBuilder = NULL;
	pGraph = NULL;

	pMediaControl = NULL;
	pCompress = NULL;

	//枚举视频设备
	ICreateDevEnum *pDevEnum = NULL;
	CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC, 
		IID_ICreateDevEnum, (void **)&pDevEnum);
	IEnumMoniker *pClassEnum = NULL;

	pDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pClassEnum, 0);
	ULONG cFetched;
	if (pClassEnum->Next(1, &pMoniker, &cFetched) == S_OK)     
	{
		pMoniker->BindToObject(0, 0, IID_IBaseFilter, (void**)&pSrc);
		pMoniker->Release(); 
	}
	pClassEnum->Release();
	//列举视频压缩设备
	pDevEnum->CreateClassEnumerator(CLSID_VideoCompressorCategory, &pClassEnum, 0);
	while (pClassEnum->Next(1, &pMoniker, &cFetched) == S_OK)     
	{
		IPropertyBag* pProp= NULL;
		pMoniker->BindToStorage(0, 0, IID_IPropertyBag, (void**)&pProp);
		VARIANT varName;
		varName.vt = VT_BSTR;
		pProp->Read(L"FriendlyName", &varName,0);
		CString str = varName.bstrVal;
		
		if (str.Find("Microsoft Video 1",0)!= -1)
		{
			pMoniker->BindToObject(0, 0, IID_IBaseFilter, (void**)&pCompress);
			pMoniker->Release(); 
			break;
		}
		VariantClear(&varName);
	}
	pClassEnum->Release();
	
	if (pCompress==NULL)
	{
		MessageBox("没有发现Microsoft Video 1压缩器!","提示",MB_ICONASTERISK);
		return;
	}

	CoCreateInstance(CLSID_CaptureGraphBuilder2,0,CLSCTX_INPROC_SERVER,IID_ICaptureGraphBuilder2,(void**)&pBuilder);
	CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, 
                        IID_IGraphBuilder, (void **)&pGraph);

	pBuilder->SetFiltergraph(pGraph);
	pGraph->QueryInterface(IID_IMediaControl,(void**)&pMediaControl);


	pGraph->AddFilter(pSrc,L"avi");
	pGraph->AddFilter(pCompress,L"com");
	CoCreateInstance(CLSID_AviDest,NULL, CLSCTX_ALL, 
                       IID_IBaseFilter,(void**)&pMux);
	pGraph->AddFilter(pMux,L"Mux");
	CoCreateInstance(CLSID_FileWriter, NULL, CLSCTX_ALL, 
                        IID_IBaseFilter, (void **)&pWriter);
	pGraph->AddFilter(pWriter,L"Writer");
	pWriter->QueryInterface(IID_IFileSinkFilter2,(void**)&pSink);
	pSink->SetFileName(str.AllocSysString(),NULL);

	//压缩器输入\输出引脚
	IAMVideoCompression * pAMCompress ;
	IPin * pComOut,*pComIn ;
	pComIn  = FindPin(pCompress,PINDIR_INPUT);
	pComOut = FindPin(pCompress,PINDIR_OUTPUT);
	pComOut->QueryInterface(IID_IAMVideoCompression,(void**)&pAMCompress);

	HRESULT hret;
	hret = pAMCompress->put_KeyFrameRate(8);
			
	IPin* pOutpin = FindPin(pSrc,PINDIR_OUTPUT); //pSrc的输出引脚
	IPin* pInpin,*pOut;	                         //pMux的输入\输出引脚

	pInpin = FindPin(pMux,PINDIR_INPUT);
	
	pOut= FindPin(pMux,PINDIR_OUTPUT);
	IPin* pInpin1= FindPin(pWriter,PINDIR_INPUT);//pWriter的输入引脚	

	//连接引脚
	HRESULT result ;
	result = pGraph->ConnectDirect(pOutpin,pComIn,NULL);
	result = pGraph->ConnectDirect((IPin *)pComOut,pInpin,NULL);
	result = pGraph->ConnectDirect(pOut,pInpin1,NULL);

	pMediaControl->Run();
	pAMCompress->Release();
	m_IsRecorded = TRUE;	
}

void CKinescopeDlg::OnStop() 
{
	if (m_IsRecorded)
	{
		pMediaControl->Stop();
	}	
}