filecutdlg.cpp

一个文件切割的例子

// FileCutDlg.cpp : implementation file
//

#include "stdafx.h"
#include "FileCut.h"
#include "FileCutDlg.h"
#include "hikplaympeg4.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()

/////////////////////////////////////////////////////////////////////////////
// CFileCutDlg dialog

CFileCutDlg::CFileCutDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CFileCutDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CFileCutDlg)
	m_bSaveFile = _T("");
	m_FileSize = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CFileCutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CFileCutDlg)
	DDX_Text(pDX, IDC_EDIT2, m_bSaveFile);
	DDX_Text(pDX, IDC_EDIT3, m_FileSize);
	DDV_MinMaxInt(pDX, m_FileSize, 1, 2000);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CFileCutDlg, CDialog)
	//{{AFX_MSG_MAP(CFileCutDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFileCutDlg message handlers

BOOL CFileCutDlg::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
	m_FileSize=1;
	UpdateData(FALSE);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CFileCutDlg::OnButton1() 
{
		CFileDialog fg(
				TRUE, 
				"mpg",
				NULL, 
				OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
				"MPEG4文件(*.mp4)|*.mp4|所有文件(*.*)|*.*||", this);
				if(fg.DoModal() == IDCANCEL)
			{
				return ;
			}
			m_strPlayFileName = fg.GetPathName();
			GetDlgItem(IDC_EDIT1)->SetWindowText(m_strPlayFileName);
			
}

void CFileCutDlg::OnButton2() 
{
//	UpdateData();
		CFileDialog pFile(FALSE,
					"mpg",
					m_bSaveFile, 
					OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
					"MPEG4文件(*.mp4)|*.mp4|所有文件(*.*)|*.*||", this);
		pFile.m_ofn.lpstrInitialDir="";
		pFile.m_ofn.lpstrTitle="保存视频文件";
		if(pFile.DoModal()==IDCANCEL) return;
		m_bSaveFile=pFile.GetPathName();
	UpdateData(FALSE);
	
}

void CFileCutDlg::OnOK() 
{
	UpdateData();
    SetCursor(::LoadCursor(NULL,IDC_WAIT));
	HANDLE m_hPlayFile;

	m_hPlayFile=CreateFile(
		m_strPlayFileName,
		GENERIC_READ,
		FILE_SHARE_READ,
		NULL,
		OPEN_EXISTING,
		FILE_ATTRIBUTE_NORMAL,
		NULL);
	if(m_hPlayFile==INVALID_HANDLE_VALUE)
	{
		MessageBox("打开文件失败");
		return ;
	}

	//Copy file
	DWORD nSize=4096*100;//每次处理400k数据；
	PBYTE pBuf=new BYTE [nSize];
	BYTE pHead[60];
	CFileFind ff;
	DWORD nFileHeadLen=Hik_PlayM4_GetFileHeadLength();
	DWORD nRet;
//	DWORD nCount;
	ULONG total=0;
	DWORD ll=0,lh=0;
	__int64 ulong;
	//写文件头
	char cut[]={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f','g'};
	int k=0;
	int size;
	BOOL is=ff.FindFile(m_strPlayFileName);
	if(is)
		ff.FindNextFile();
	//DWORD len=ff.GetLength();
	ulong=ff.GetLength64();
//	ulong=0x12345678123456ff;
 //   ll=ulong&0xffffffff;
  //  lh=(ulong>>32)&0xffffffff;
	SetFilePointer(m_hPlayFile,0,0,FILE_BEGIN);
	if(!ReadFile(m_hPlayFile,pHead,nFileHeadLen,&nRet,NULL))
	{
		MessageBox("读文件头失败");
		goto end;
	}
	m_FileSize=m_FileSize*1024*1024;
	SetFilePointer(m_hPlayFile,nFileHeadLen,0,FILE_BEGIN);
    total=nFileHeadLen;
	HANDLE hNewFile;
	m_bSaveFile.Insert(m_bSaveFile.GetLength()-4," ");
	while(1){
		//m_bSaveFile+=cut[k];
		m_bSaveFile.SetAt(m_bSaveFile.GetLength()-5,cut[k]);
		hNewFile=CreateFile(
			m_bSaveFile,
			GENERIC_WRITE,
			FILE_SHARE_READ|FILE_SHARE_WRITE,
			NULL,
			CREATE_ALWAYS,
			FILE_ATTRIBUTE_NORMAL,
			NULL);
		if(hNewFile==INVALID_HANDLE_VALUE)
		{
			CString csErrorName;
			csErrorName.Format("创建文件：%s失败",m_bSaveFile);
			MessageBox(csErrorName);
			return;
		}
		if(!WriteFile(hNewFile,pHead,nFileHeadLen,&nRet,NULL))
		{
			MessageBox("写文件头失败");
			goto end;
		}

	    size=0;
		while(size<=m_FileSize)
		{
			if(!ReadFile(m_hPlayFile,pBuf,nSize,&nRet,NULL))
			{
				MessageBox("读文件失败");
				goto end;
			}
			if(!WriteFile(hNewFile,pBuf,nSize,&nRet,NULL))
			{
				MessageBox("写文件失败");
				goto end;
			}
			//total+=nSize;
			size+=nSize;
			ulong=ulong-nSize;
			if(ulong<=0) goto end;
			/*if(lh==0){
				if(total>=ll) goto end;
			}
			else{
				if(total>=ll){
					total=0;
					ll=lh;
					lh=0;
				}
			}
			*/

			
		}
		k++;
		CloseHandle(hNewFile);
	}
end:	
	delete []pBuf;
	CloseHandle(hNewFile);
	CloseHandle(m_hPlayFile);
	SetCursor(AfxGetApp()->LoadCursor(IDC_POINTER));
	
}