dswaverecorddlg.cpp

来自「《Visual C++视频技术方案宝典》配套光盘」· C++ 代码 · 共 312 行

// DSWaveRecordDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DSWaveRecord.h"
#include "DSWaveRecordDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#include <atlbase.h>
#include <windows.h>
#include <dshow.h>
#include "objbase.h"
#pragma comment(lib, "Strmiids.lib")

IMediaControl* pMediaControl ;
IMoniker *pMoniker;
IBaseFilter *pSrc ,*pWaveDest ,*pWriter;
IFileSinkFilter2* pSink ;
IGraphBuilder *pGraph;
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
static const GUID CLSID_WavDest =
{ 0x3c78b8e2, 0x6c4d, 0x11d1, { 0xad, 0xe2, 0x0, 0x0, 0xf8, 0x75, 0x4b, 0x99 } };

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()

/////////////////////////////////////////////////////////////////////////////
// CDSWaveRecordDlg dialog

CDSWaveRecordDlg::CDSWaveRecordDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDSWaveRecordDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDSWaveRecordDlg)
		// 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 CDSWaveRecordDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDSWaveRecordDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDSWaveRecordDlg, CDialog)
	//{{AFX_MSG_MAP(CDSWaveRecordDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ADDPATH, OnAddpath)
	ON_BN_CLICKED(IDC_RECORD, OnRecord)
	ON_BN_CLICKED(IDC_STOP, OnStop)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDSWaveRecordDlg message handlers

BOOL CDSWaveRecordDlg::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
	
	GetDlgItem(IDC_RECORD)->EnableWindow(false);
	GetDlgItem(IDC_STOP)->EnableWindow(false);
	GetDlgItem(IDC_PATH)->EnableWindow(false);
	return TRUE;
}

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

void CDSWaveRecordDlg::OnAddpath() 
{
	CFileDialog file(false,NULL,NULL,NULL,"文件(*.wav)|*.wav||");
	if(file.DoModal()==IDOK)
	{
		CString strname=file.GetPathName();
		strname+=".wav";
		GetDlgItem(IDC_PATH)->SetWindowText(strname);
		GetDlgItem(IDC_RECORD)->EnableWindow(true);
	}
}



void CDSWaveRecordDlg::OnRecord()
{
	CString tmp;
	GetDlgItem(IDC_PATH)->GetWindowText(tmp);
	if(tmp.IsEmpty())
	{
		MessageBox("请先设置文件");
		return;
	}
	GetDlgItem(IDC_STOP)->EnableWindow(true);
	ICaptureGraphBuilder2 * pBuilder = NULL;
	
	pGraph = NULL;
	pMediaControl = 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);

	ICreateDevEnum *pDevEnum = NULL;
	CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC, 
		IID_ICreateDevEnum, (void **)&pDevEnum);

	IEnumMoniker *pClassEnum = NULL;
	pDevEnum->CreateClassEnumerator(CLSID_AudioInputDeviceCategory, &pClassEnum, 0);
	ULONG cFetched;
	if (pClassEnum->Next(1, &pMoniker, &cFetched) == S_OK)     
	{
		pMoniker->BindToObject(0, 0, IID_IBaseFilter, (void**)&pSrc);
		pMoniker->Release();      
	}
	pClassEnum->Release();

	CoCreateInstance(CLSID_WavDest, NULL, CLSCTX_ALL, 
                        IID_IBaseFilter, (void **)&pWaveDest);

	CoCreateInstance(CLSID_FileWriter, NULL, CLSCTX_ALL, 
                        IID_IBaseFilter, (void **)&pWriter);

	pGraph->AddFilter(pSrc,L"Wav");
	pGraph->AddFilter(pWaveDest,L"WavDest");
	pGraph->AddFilter(pWriter,L"FileWriter");

	pWriter->QueryInterface(IID_IFileSinkFilter2,(void**)&pSink);

	pSink->SetFileName(tmp.AllocSysString(),NULL);

	IPin* pOutpin = FindPin(pSrc,PINDIR_OUTPUT);

	IPin* pInpin,*pOut;	
	
	pOut= FindPin(pWaveDest,PINDIR_OUTPUT);

	AM_MEDIA_TYPE type;
	type.majortype = MEDIATYPE_Stream;
	type.subtype =MEDIASUBTYPE_WAVE;
	type.formattype = FORMAT_None;
	type.bFixedSizeSamples = FALSE;
	type.bTemporalCompression = FALSE;
	type.pUnk = NULL;

	pInpin = FindPin(pWaveDest,PINDIR_INPUT);
	IPin* pInpin1= FindPin(pWriter,PINDIR_INPUT);	

	pGraph->ConnectDirect(pOutpin,pInpin,NULL);
	pGraph->ConnectDirect(pOut,pInpin1,NULL);

	pMediaControl->Run();
	GetDlgItem(IDC_RECORD)->EnableWindow(false);
	GetDlgItem(IDC_STOP)->EnableWindow(true);
}

void CDSWaveRecordDlg::OnStop() 
{
	pMediaControl->Stop();
	pMediaControl->Release();
	pGraph->Release();
	MessageBox("录制完成");
	GetDlgItem(IDC_PATH)->SetWindowText("");
	GetDlgItem(IDC_STOP)->EnableWindow(false);
}

IPin* CDSWaveRecordDlg::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;
}

BOOL CDSWaveRecordDlg::DestroyWindow() 
{
	CoUninitialize();
	return CDialog::DestroyWindow();
}