talk2medlg.cpp

G.726源代码

// Talk2MeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Talk2Me.h"
#include "Talk2MeDlg.h"
#include ".\talk2medlg.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()

/////////////////////////////////////////////////////////////////////////////
// CTalk2MeDlg dialog

CTalk2MeDlg::CTalk2MeDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTalk2MeDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTalk2MeDlg)
		// 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 CTalk2MeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTalk2MeDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTalk2MeDlg, CDialog)
	//{{AFX_MSG_MAP(CTalk2MeDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_DESTROY()
	ON_MESSAGE(WM_WAVE_DATA_ARRIVE,OnWaveDataArrivedMsg)
	ON_MESSAGE(WM_NET_DATA_ARRIVED,OnNetDataArrivedMsg)
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_START_TALKING, OnBnClickedStartTalking)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTalk2MeDlg message handlers

BOOL CTalk2MeDlg::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
	
	//1.状态
	m_bTalking=FALSE;
	ChatIp="";
	//2.初始化RTP
	InitRTP();
	//3.初始化音频
	g_pOut = new CWaveOut();
	g_pIn = new CWaveIn();
	g_pOut->StartPlay();
	g_pIn->StartRec(OnWaveDataArrive,(DWORD)this);	
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CTalk2MeDlg::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 CTalk2MeDlg::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 CTalk2MeDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CTalk2MeDlg::OnDestroy() 
{
	CDialog::OnDestroy();	

	//关闭音频
	g_pOut->StopPlay();
	g_pIn->StopRec();
	delete g_pOut;
	delete g_pIn;

	//关闭RTP
	m_sessData.rtpReceive.Destroy();
	m_sessData.rtpSend.Destroy();

	WSACleanup();
	
}

void CTalk2MeDlg::OnCancel() 
{
	CDialog::OnCancel();
	DestroyWindow();
}

void CTalk2MeDlg::OnOK() 
{	
	CDialog::OnOK();
	DestroyWindow();
}

void CTalk2MeDlg::InitRTP()
{
	RTPSessionParams sessParams;
	RTPUDPv4TransmissionParams transParams;

	WORD wVersionRequested;
	WSADATA wsaData;
	
	wVersionRequested=MAKEWORD(2,2);
	
	if(WSAStartup(wVersionRequested,&wsaData)!=0)
	{
		return;
	}

	/////////////////////////////////////////////////////////////////
	//建立RTP的数据发送
	sessParams.SetOwnTimestampUnit(1.0 / 30.0); //30 video frames per second
	sessParams.SetUsePollThread(1); //background thread to call virtual callbacks - set by default, but just to be sure
	sessParams.SetMaximumPacketSize(MAX_PACKET_SIZE);
	transParams.SetPortbase(PORT_BASE);
	m_sessData.rtpSend.Create(sessParams, &transParams);
	/////////////////////////////////////////////////////////////////

	/////////////////////////////////////////////////////////////////
	//建立RTP的数据接收
	sessParams.SetOwnTimestampUnit(1.0 / 30.0); //30 video frames per second
	sessParams.SetUsePollThread(1); //background thread to call virtual callbacks - set by default, but just to be sure
	sessParams.SetMaximumPacketSize(MAX_PACKET_SIZE);
	transParams.SetPortbase(PORT_DATA);
	m_sessData.rtpReceive.dlg=this;
	m_sessData.rtpReceive.Create(sessParams, &transParams);
	/////////////////////////////////////////////////////////////////
}

void CTalk2MeDlg::OnWaveDataArrive(char *data,int length,DWORD userdata)
{
	CTalk2MeDlg *pWnd=(CTalk2MeDlg *)userdata;
	::SendMessage(pWnd->m_hWnd,WM_WAVE_DATA_ARRIVE,(WPARAM)data,LPARAM(length));
}

LONG CTalk2MeDlg::OnWaveDataArrivedMsg(WPARAM wParam,LPARAM lParam)
{
	//处理收到的音频数据
	int length=(int)lParam;
	char *data=(char*)wParam;

	memcpy(pin,g_pIn->buffer,960);
	
	
	//G726压缩
	//对音频帧进行编码	
	g726_Encode((unsigned char*)pin,pout);

	m_sessData.rtpSend.SendPacket(pout,120, 0, false, 10UL);


	return 0;
}

LONG CTalk2MeDlg::OnNetDataArrivedMsg(WPARAM wParam,LPARAM lParam)
{
	char* data;
	int length;

	data=(char*)wParam;
	length=(int)lParam;

	//G726解压
	//对音频帧进行解码
	g726_Decode(data,(unsigned char*)waveout);
	//播放声音
	g_pOut->Play(waveout,960);

	return 1;
}

void CTalk2MeDlg::OnBnClickedStartTalking()
{
	CButton* pBtn=(CButton *)GetDlgItem(IDC_START_TALKING);

	if(pBtn->GetCheck())
	{
		//取得对方IP
		GetDlgItemText(IDC_EDIT_IP,ChatIp);
		//开始聊天
		intIP = inet_addr(ChatIp);
		if(intIP != INADDR_NONE)
		{
			intIP = ntohl(intIP); //put in host byte order
			rtpAddr=new RTPIPv4Address(intIP,PORT_DATA);
			m_sessData.rtpSend.AddDestination(*rtpAddr);
			delete rtpAddr;
		}
		pBtn->SetWindowText("停止对话");
	}
	else
	{
		//停止聊天
		intIP = inet_addr(ChatIp);
		if(intIP != INADDR_NONE)
		{
			intIP = ntohl(intIP); //put in host byte order
			rtpAddr=new RTPIPv4Address(intIP,PORT_DATA);
			m_sessData.rtpSend.DeleteDestination(*rtpAddr);
			delete rtpAddr;
		}
		pBtn->SetWindowText("开始对话");
	}
}