g729outdlg.cpp

VC++实现ITU-G.729语音解码及播放

// G729OutDlg.cpp : implementation file
//

#include "stdafx.h"
#include "G729Out.h"
#include "G729OutDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CG729OutDlg dialog

CG729OutDlg::CG729OutDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CG729OutDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CG729OutDlg)
		// 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);


	hwO = NULL;
	memset(&wfx,0x00,sizeof(WAVEFORMATEX));
	wfx.wFormatTag = WAVE_FORMAT_PCM;
	wfx.nChannels = 1;
	wfx.wBitsPerSample = 16;
	wfx.cbSize = 0;
	wfx.nSamplesPerSec = 8000;//44100;//8000;//20050;
	wfx.nAvgBytesPerSec = //16000
		wfx.nSamplesPerSec*(wfx.wBitsPerSample/8);
	wfx.nBlockAlign = //2
		(wfx.wBitsPerSample/8)*wfx.nChannels;

//	WaveHdrOut.lpData = WaveOutBuffer;

	lBufferCounter = 0;
	for(int i=0;i<BUFFER_SIZE;i++)
	{
		ZeroMemory(&lBufferpHdr[i], sizeof(WAVEHDR));
		lBufferpHdr[i].lpData = NULL;
	}
}

void CG729OutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CG729OutDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CG729OutDlg, CDialog)
	//{{AFX_MSG_MAP(CG729OutDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_PLAY, OnPlay)
	ON_BN_CLICKED(IDC_STOP, OnStop)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP

	ON_MESSAGE(MM_WOM_DONE,OnWomDone)

END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CG729OutDlg message handlers

BOOL CG729OutDlg::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 CG729OutDlg::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 CG729OutDlg::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 CG729OutDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CG729OutDlg::OnPlay() 
{
	// TODO: Add your control notification handler code here
	if(hwO == NULL)
	{
		if(waveOutOpen(&hwO,WAVE_MAPPER,&wfx,(long)GetSafeHwnd(),0,CALLBACK_WINDOW) 
			!= MMSYSERR_NOERROR)
		{
			return ;
		}
	}
	fp = fopen("d:\\debug\\1.pcm","rb");
	SetTimer(1,20,NULL);
}

void CG729OutDlg::OnStop() 
{
	// TODO: Add your control notification handler code here
	if(hwO)
	{
//		waveOutUnprepareHeader(hwO,&WaveHdrOut,sizeof(WAVEHDR));
 //   	ClearOutBuffer();
		waveOutClose(hwO);//关声音输出设备
		hwO = NULL;
	}

	for(int i=0;i<BUFFER_SIZE;i++)
	{
		if(lBufferpHdr[i].lpData)
		{
			free(lBufferpHdr[i].lpData);
			lBufferpHdr[i].lpData = NULL;
		}
	}	
}
LRESULT CG729OutDlg::OnWomDone(WPARAM wParam, LPARAM lParam)
{
	if(hwO)
	{

		LPWAVEHDR lpHdr = (LPWAVEHDR) lParam;
		::waveOutUnprepareHeader(hwO, lpHdr, sizeof(WAVEHDR));
	
		free(lpHdr->lpData);
		lpHdr->lpData = NULL;

	//	fclose(fp);
	//	fp = NULL;
	//	KillTimer(1);

	}

	return true;
}

void CG729OutDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	switch(nIDEvent)
	{
	case 1:
		{
			if(fp)
			{

				PlayWave();
			}
			break;
		}
	}
	CDialog::OnTimer(nIDEvent);
}

void CG729OutDlg::PlayWave()
{
	long DataLen = 320;

	if(lBufferpHdr[lBufferCounter].lpData)
	{
		::waveOutUnprepareHeader(hwO, &lBufferpHdr[lBufferCounter], sizeof(WAVEHDR));
		free(lBufferpHdr[lBufferCounter].lpData);
		lBufferpHdr[lBufferCounter].lpData = NULL;
	}


	lBufferpHdr[lBufferCounter].dwBufferLength = DataLen;
	lBufferpHdr[lBufferCounter].lpData = (char *)calloc(DataLen,sizeof(char));

	fread(lBufferpHdr[lBufferCounter].lpData,sizeof(char),DataLen,fp);
//	memcpy(lBufferpHdr[lBufferCounter].lpData,WaveData.pbVal,DataLen);


	waveOutPrepareHeader(hwO, &lBufferpHdr[lBufferCounter], sizeof(WAVEHDR));
		//播放该语音数据
	waveOutWrite(hwO, &lBufferpHdr[lBufferCounter], sizeof(WAVEHDR));
//		waveOutUnprepareHeader(hwO,&WaveHdrOut,sizeof(WAVEHDR));
	lBufferCounter ++;
	lBufferCounter = lBufferCounter % BUFFER_SIZE;
}