videocompressdlg.cpp

本软件是一个AVI数据压缩方案

// VideoCompressDlg.cpp : implementation file
//

#include "stdafx.h"
#include "VideoCompress.h"
#include "VideoCompressDlg.h"


#include "vfw.h"
#pragma comment (lib,"vfw32")

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


/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
#define CM_NOTIFY  WM_USER+1

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()

/////////////////////////////////////////////////////////////////////////////
// CVideoCompressDlg dialog

CVideoCompressDlg::CVideoCompressDlg(CWnd* pParent /*=NULL*/)
	:m_Completed(FALSE),m_IsCompressing(FALSE), CDialog(CVideoCompressDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CVideoCompressDlg)
		// 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(IDI_ICON1);
}

void CVideoCompressDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CVideoCompressDlg)
	DDX_Control(pDX, IDC_PROGRESS, m_Progress);
	DDX_Control(pDX, IDC_DESFILE, m_DesFile);
	DDX_Control(pDX, IDC_SOURCEFILE, m_SourceFile);

	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CVideoCompressDlg, CDialog)
	//{{AFX_MSG_MAP(CVideoCompressDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_SOURCEBROWN, OnSourceBrown)
	ON_BN_CLICKED(IDC_DESBROWN2, OnDesBrown)
	ON_BN_CLICKED(IDC_STARTCOMPRESS, OnStartCompress)
	ON_MESSAGE(CM_NOTIFY,OnGraphNotify)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CVideoCompressDlg message handlers

BOOL CVideoCompressDlg::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 CVideoCompressDlg::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 CVideoCompressDlg::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 CVideoCompressDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CVideoCompressDlg::OnOK() 
{


}
//查找引脚
IPin* CVideoCompressDlg::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 CVideoCompressDlg::OnSourceBrown() 
{
	CFileDialog fDlg(TRUE,"","",OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,"AVI文件|*.avi");
	if (fDlg.DoModal()==IDOK)
	{
		CString strFile = fDlg.GetPathName();
		m_SourceFile.SetWindowText(strFile);
	}
}

void CVideoCompressDlg::OnDesBrown() 
{
	CFileDialog fDlg(FALSE,"avi","one",OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,"AVI文件|*.avi");
	CString strFile;
	
	if (fDlg.DoModal()==IDOK)
	{	
		strFile= fDlg.GetPathName();
		DeleteFile(strFile);       // 如果文件存在,则先删除文件
		m_DesFile.SetWindowText(strFile);
	}
}

void CVideoCompressDlg::OnStartCompress() 
{
	CString srcFile,dstFile;
	m_SourceFile.GetWindowText(srcFile);
	m_DesFile.GetWindowText(dstFile);

	if (srcFile.IsEmpty()|| dstFile.IsEmpty())
	{
		MessageBox("源文件或目标文件不能为空!","提示");
		return;
	}

	if (srcFile==dstFile)
	{
		MessageBox("源文件与目标文件不能相同!","提示");
		return;
	}

	ICaptureGraphBuilder2 * pBuilder = NULL;
	pGraph = NULL;

	pMediaControl = NULL;
	pCompress = NULL;

	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);

	pBuilder->SetOutputFileName( &MEDIASUBTYPE_Avi, dstFile.AllocSysString(), &pMux, NULL);
	pGraph->AddSourceFilter(srcFile.AllocSysString(), L"Source Filter", &pSrc);



	//列举视频压缩器
	ICreateDevEnum *pDevEnum = NULL;
	IEnumMoniker *pClassEnum = NULL;
	CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC, 
		IID_ICreateDevEnum, (void **)&pDevEnum);
	ULONG cFetched;
	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();
	pMoniker->Release();

	if (pCompress==NULL)
	{
		MessageBox("没有发现Microsoft Video 1压缩器!","提示",MB_ICONASTERISK);
		return;
	}

	pGraph->AddFilter(pCompress,L"Compressor");
	
	HRESULT ret;
	IPin * pSourceOut;
	IPin* pCompressIn,* pCompressOut;
	pCompressIn  =  FindPin(pCompress,PINDIR_INPUT) ;
	pCompressOut =  FindPin(pCompress,PINDIR_OUTPUT);

	IAMVideoCompression * pAMCompress ;
	pCompressOut->QueryInterface(IID_IAMVideoCompression,(void**)&pAMCompress);
	HRESULT hret;
	hret = pAMCompress->put_KeyFrameRate(8);

	pBuilder->RenderStream(NULL,NULL,pSrc,pCompress,pMux);
	HRESULT hr = pMux->QueryInterface(IID_IMediaSeeking, (void**)&pSeek);

    pGraph->QueryInterface(IID_IMediaEventEx, (void **)&pEvent);
	hret =  pEvent->SetNotifyWindow((OAHWND)m_hWnd,CM_NOTIFY,0);

	pMediaControl->Run();
	m_IsCompressing = TRUE;	
}

void CVideoCompressDlg::OnCancel() 
{
	CDialog::OnCancel();
}

void CVideoCompressDlg::OnGraphNotify(WPARAM wParam, LPARAM lParam)
{
	if (pEvent)
	{
		LONG eventcode = 0,param1 =0,param2 = 0;
		while (SUCCEEDED(pEvent->GetEvent(&eventcode,&param1,&param2,0)))
		{
			pEvent->FreeEventParams(eventcode,param1,param2);
			switch (eventcode)
			{
			case EC_COMPLETE:
				{
					m_Completed = TRUE;
					m_IsCompressing = FALSE;
					pMediaControl->Stop();
					pMediaControl->Release();
					
					MessageBox("压缩完成!","提示");
					break;
				}
			}
		}
	}
}

void CVideoCompressDlg::OnTimer(UINT nIDEvent) 
{
	CDialog::OnTimer(nIDEvent);
}