soundgeneratordlg.cpp

This source can emulate function generator using sound card. This source is very useful for sound c

// SoundGeneratorDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Player.h"
#include "SoundGenerator.h"
#include "SoundGeneratorDlg.h"
#include "MatException.h"
#include "ScopeGuardMutex.h"
#include <math.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()

/////////////////////////////////////////////////////////////////////////////
// CSoundGeneratorDlg dialog

CSoundGeneratorDlg::CSoundGeneratorDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSoundGeneratorDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSoundGeneratorDlg)
	m_shape1 = _T("");
	m_shape3 = _T("");
	m_shape2 = _T("");
	m_varx = _T("");
	m_vary = _T("");
	m_varz = _T("");
	m_msg = _T("");
	m_shape1Active = FALSE;
	m_shape2Active = FALSE;
	m_shape3Active = FALSE;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	m_pVarExpr = NULL;
	m_pShapeExpr = NULL;
	m_pUserVar = NULL;
	m_pShapeVolume = NULL;
	m_pShapeActive = NULL;
	m_pSamples = NULL;
	m_pSoundPlayer = NULL;

}

CSoundGeneratorDlg::~CSoundGeneratorDlg()
{
	if( m_pSoundPlayer != NULL )
	{
		delete m_pSoundPlayer;
	}
	
	if( m_pVarExpr != NULL )
	{
		delete []m_pVarExpr;
	}
	if( m_pShapeExpr != NULL )
	{
		delete []m_pShapeExpr;
	}
	
	if( m_pUserVar != NULL )
	{
		delete []m_pUserVar;
	}

	if( m_pShapeVolume != NULL )
	{
		delete []m_pShapeVolume;
	}

	if( m_pShapeActive != NULL )
	{	
		delete []m_pShapeActive;
	}	

	if( m_pSamples != NULL )
	{
		delete []m_pSamples;
	}

}

void CSoundGeneratorDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSoundGeneratorDlg)
	DDX_Control(pDX, IDC_VOLUME_SHAPE3, m_volumeShape3);
	DDX_Control(pDX, IDC_VOLUME_SHAPE2, m_volumeShape2);
	DDX_Control(pDX, IDC_VOLUME_SHAPE1, m_volumeShape1);
	DDX_Text(pDX, IDC_SHAPE1, m_shape1);
	DDX_Text(pDX, IDC_SHAPE3, m_shape3);
	DDX_Text(pDX, IDC_SHAPE2, m_shape2);
	DDX_Text(pDX, IDC_VARX, m_varx);
	DDX_Text(pDX, IDC_VARY, m_vary);
	DDX_Text(pDX, IDC_VARZ, m_varz);
	DDX_Text(pDX, IDC_MSG, m_msg);
	DDX_Check(pDX, IDC_ACTIVE_SHAPE1, m_shape1Active);
	DDX_Check(pDX, IDC_ACTIVE_SHAPE2, m_shape2Active);
	DDX_Check(pDX, IDC_ACTIVE_SHAPE3, m_shape3Active);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSoundGeneratorDlg, CDialog)
	//{{AFX_MSG_MAP(CSoundGeneratorDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ACTIVE_SHAPE1, OnActiveShape1)
	ON_BN_CLICKED(IDC_ACTIVE_SHAPE2, OnActiveShape2)
	ON_BN_CLICKED(IDC_ACTIVE_SHAPE3, OnActiveShape3)
	ON_BN_CLICKED(IDC_APPLY_SHAPE1, OnApplyShape1)
	ON_BN_CLICKED(IDC_APPLY_SHAPE2, OnApplyShape2)
	ON_BN_CLICKED(IDC_APPLY_SHAPE3, OnApplyShape3)
	ON_EN_CHANGE(IDC_SHAPE1, OnChangeShape1)
	ON_EN_CHANGE(IDC_SHAPE2, OnChangeShape2)
	ON_EN_CHANGE(IDC_SHAPE3, OnChangeShape3)
	ON_BN_CLICKED(IDC_APPLY_VARX, OnApplyVarx)
	ON_BN_CLICKED(IDC_APPLY_VARY, OnApplyVary)
	ON_BN_CLICKED(IDC_APPLY_VARZ, OnApplyVarz)
	ON_EN_CHANGE(IDC_VARX, OnChangeVarx)
	ON_EN_CHANGE(IDC_VARY, OnChangeVary)
	ON_EN_CHANGE(IDC_VARZ, OnChangeVarz)
	ON_WM_DESTROY()
	ON_WM_HSCROLL()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSoundGeneratorDlg message handlers

BOOL CSoundGeneratorDlg::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

	m_volumeShape1.SetRange(0, 100);
	m_volumeShape2.SetRange(0, 100);
	m_volumeShape3.SetRange(0, 100);
	
	
	//*** math expression initializations
	m_nbVars = 3;
	m_nbShapes = 3;	
	m_t = 0;

	m_pVarExpr = new MathExpression[m_nbVars];
	m_pUserVar = new EXPR_VALTYPE[m_nbVars];
	m_pShapeExpr = new MathExpression[m_nbShapes];	
	m_pShapeVolume = new double[m_nbShapes];
	m_pShapeActive = new bool[m_nbShapes];

	for( int t=0; t<m_nbVars; t++ )
	{
		m_pVarExpr[t].defineVar(_T("t"), &m_t);	
	}

	for( t=0; t<m_nbShapes; t++ )
	{
		m_pShapeActive[t] = true;
		m_pShapeExpr[t].defineVar(_T("t"), &m_t);		

		for( int var=0; var<m_nbVars; var++ )
		{			
			wchar_t varName[2] = {0};
			varName[0] = 'x' + var;
			m_pShapeExpr[t].defineVar(varName, &m_pUserVar[var]);
		}
	}

	m_soundPlayerEventNbSamples = 10000;	
	m_nbSoudPlayerEvents = 3;
	
	
	GetDlgItem(IDC_WAVE)->GetClientRect(&m_graphRect);
	m_graphMaxLines = m_graphRect.right - m_graphRect.left - 10;		
	m_graphStep = m_soundPlayerEventNbSamples / m_graphMaxLines+1;
	if( m_graphStep < 1 )
	{	
		m_graphStep = 1;
	}	

	m_graphCursor = 0;
	m_graphLastVal = 0;
	m_hdc = ::GetDC(GetDlgItem(IDC_WAVE)->m_hWnd);
	m_hRedPen = CreatePen(PS_SOLID, 1, RGB(250,50,30));
	m_hBgPen = CreatePen(PS_SOLID, 1, RGB(80,90,110));
	m_hBgBrush = CreateSolidBrush(RGB(80,90,110));

	// **** some settings... should be put in a config file
	m_varx = _T("min(sin(t), cos(t))");
	m_vary = _T("max(300+200*cos(t), 300+200*sin(t))");
	m_varz = _T("max(300+200*cos(t*1.5), 300+200*sin(t*1.7))");
	m_shape1 = _T("tan(t*2)*sin(x*y*600)*abs(sin(t/10))*abs(cos(t/5))");
	m_shape2 = _T("abs(sin(t*10))*sin(x*y)");
	m_shape3 = _T("sin(sin(z*t*0.1))");

	m_pShapeVolume[0] = 0.2;
	m_pShapeVolume[1] = 0.45;
	m_pShapeVolume[2] = 0.15;

	m_volumeShape1.SetPos(m_pShapeVolume[0]*100);
	m_volumeShape2.SetPos(m_pShapeVolume[1]*100);
	m_volumeShape3.SetPos(m_pShapeVolume[2]*100);

	m_shape1Active = TRUE;
	m_shape2Active = TRUE;
	m_shape3Active = TRUE;
	


	// ****  sound player initialization	
	try
	{
		Player *pPlayer = new Player();
		pPlayer->SetHWnd(m_hWnd);
		m_pSoundPlayer = pPlayer;
		m_pSoundPlayer->Init();
		
		SOUNDFORMAT format;
		format.NbBitsPerSample = 16;
		format.NbChannels = 1;
		format.SamplingRate = 44100;	
		
		m_sampleScaleVal = pow(2, format.NbBitsPerSample - 1);
		m_maxEventComputeTime = m_soundPlayerEventNbSamples / (double)format.SamplingRate * 1000;
		
		m_pSamples = new short[m_soundPlayerEventNbSamples];	// 16 bits samples -> short		
		m_tStep = (m_soundPlayerEventNbSamples/(double)format.SamplingRate) * 2.0*3.14159 / (double)m_soundPlayerEventNbSamples;	// 1 sec = 2*pi

		
		m_soundPlayerEventSize = m_soundPlayerEventNbSamples * format.NbBitsPerSample/8;	
		int bufferSize = m_soundPlayerEventSize * m_nbSoudPlayerEvents;
		
		m_pSoundPlayer->CreateSoundBuffer(format, bufferSize, 0);

		m_pSoundPlayer->SetSoundEventListener(this);
		std::vector<DWORD> events;

		for( int t=0; t<m_nbSoudPlayerEvents; t++ )
		{	
			events.push_back((t+1)*m_soundPlayerEventSize - m_soundPlayerEventSize*0.95);
		}

		m_pSoundPlayer->CreateEventReadNotification(events);
		m_pSoundPlayer->Play(1); // loop playing
	}
	catch(MATExceptions &e)
	{
		MessageBox(e.getAllExceptionStr().c_str(), _T("Error initializing the sound player"));
		EndDialog(IDCANCEL);
		return FALSE;
	}

	UpdateData(0);

	SetTimer(0, 1000, NULL);
	
	OnApplyVarx();
	OnApplyVary();
	OnApplyVarz();
	OnApplyShape1();
	OnApplyShape2();
	OnApplyShape3();

	

	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CSoundGeneratorDlg::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 CSoundGeneratorDlg::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;