// 7300bWavDlg.cpp : implementation file
//

#include "stdafx.h"
#include "7300bWav.h"
#include "7300bWavDlg.h"
#include "math.h"

#ifndef   M_PI
#define   M_PI     3.14159265359
#endif

#define MAX_SIZE    1024000   //in words

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

CRect plotRect;

U16 out_buf[MAX_SIZE];
U16 in_buf[MAX_SIZE], in_buf2[MAX_SIZE], in_buf3[MAX_SIZE], in_buf4[MAX_SIZE];

I16 ghCard;
U16 gViewIdx;
BOOLEAN gHalfReady;
U16 db_times = 0;


void DI_DBCallBack()
{
  BOOLEAN HalfReady=0;
  DI_AsyncMultiBufferNextReady(ghCard, &HalfReady, &gViewIdx);

  db_times  = (db_times+1)%4;
}

void DI_CallBack()
{
	U32 access_cnt;
	C7300bWavApp* pMyApp;
	C7300bWavDlg* pMyDlg;

	pMyApp = (C7300bWavApp*)AfxGetApp();
	pMyDlg = (C7300bWavDlg*)(pMyApp->m_pMainWnd);

	pMyDlg->display_buffer_data();

	DO_AsyncClear(ghCard, &access_cnt);
	pMyDlg->GetDlgItem(IDC_BT_START)->EnableWindow( TRUE );
	pMyDlg->GetDlgItem( IDC_BT_STOP )->EnableWindow( FALSE);
}



// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// C7300bWavDlg dialog




C7300bWavDlg::C7300bWavDlg(I16 hCard, CWnd* pParent /*=NULL*/)
	: CDialog(C7300bWavDlg::IDD, pParent)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	ghCard = hCard;

 	OnBrush = OffBrush = NULL;

	n_PlotWidth = -1;
	n_PlotHeight = -1;

	min_val = 0x00;
	max_val = 0x0000FFFF;

	m_fSampleRate = 10000.0; // 10KHz
	m_dwDISamples = 100000;

}

void C7300bWavDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(C7300bWavDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_WM_DESTROY()
	ON_BN_CLICKED(IDC_BT_START, &C7300bWavDlg::OnStart)
	ON_BN_CLICKED(IDC_BT_STOP, &C7300bWavDlg::OnStop)
//	ON_WM_TIMER()
	ON_WM_VSCROLL()
END_MESSAGE_MAP()


// C7300bWavDlg message handlers

BOOL C7300bWavDlg::OnInitDialog()
{
	I16 err;
	int i;
	CString strTemp;

	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)
	{
		BOOL bNameValid;
		CString strAboutMenu;
		bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
		ASSERT(bNameValid);
		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
	x_divider = 5; y_divider = 2;	

	OnBrush = CreateSolidBrush( RGB(255,0,0) );
	OffBrush = CreateSolidBrush( RGB(125,0,0) );

	RedPen.CreatePen( PS_SOLID, 1, RGB(255,0,0));
	GreenPen.CreatePen( PS_SOLID, 1, RGB(0,255,0));	

	if(	n_PlotWidth == -1 && n_PlotHeight == -1 )
	{
		((CWnd*)GetDlgItem(IDC_STATIC_DRAW))->GetWindowRect(&plotRect);
		ScreenToClient(&plotRect);

		n_PlotWidth = min( plotRect.Width(), 512);
		n_PlotHeight = plotRect.Height() - 10;
	}

	// set the default SampleRate
	SetDlgItemInt( IDC_EDIT_SAMPLE_RATE, (UINT)(m_fSampleRate/1000) );

	// Set the default DI Sample
	SetDlgItemInt( IDC_EDIT_SAMPLE, (UINT)(m_dwDISamples) );

    err = DI_7300B_Config(ghCard, 16, TRIG_CLK_10MHZ, P7300_WAIT_NO, P7300_TERM_ON, 0, 0, 0);
    if (err != 0) 
	{
		strTemp.Format( TEXT("DI_7300B_Config Error = %d, card=%d"), err, ghCard);
		AfxMessageBox( strTemp );
		return TRUE;
    }

    err = DO_7300B_Config (ghCard, 16, TRIG_INT_PACER, P7300_WAIT_NO, P7300_TERM_ON, 0, 0x00040004);
    if (err != 0) 
	{
		strTemp.Format( TEXT("DO_7300B_Config Error = %d, card=%d"), err, ghCard);
		AfxMessageBox( strTemp );
		return TRUE;
    }

     for (i=0; i<MAX_SIZE; i++)
           out_buf[i] = (U16)(sin((double)i/5000*M_PI)*0x7fff)+0x8000;
     for (i=0; i<MAX_SIZE; i++)
	 {
           in_buf[i]  = (U16)(0);
           in_buf2[i] = (U16)(0);
           in_buf3[i] = (U16)(0);
           in_buf4[i] = (U16)(0);
	 }

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

void C7300bWavDlg::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 C7300bWavDlg::OnPaint()
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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
	{
		redraw_display_area();
		CDialog::OnPaint();
	}
}

// The system calls this function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR C7300bWavDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}


void C7300bWavDlg::OnDestroy()
{
	CDialog::OnDestroy();

	// TODO: Add your message handler code here
	if( OnBrush != NULL )
		::DeleteObject( OnBrush );

	if( OffBrush != NULL )
		::DeleteObject( OffBrush );

	RedPen.DeleteObject();
	GreenPen.DeleteObject();

	DI_ContMultiBufferReset( ghCard );

}

void C7300bWavDlg::OnStart()
{
	// TODO: Add your control notification handler code here
	U32 dwDISamples;
	U16 BufferId;
	I16 err;
	CString strMsg;

	dwDISamples = GetDlgItemInt( IDC_EDIT_SAMPLE );
	if( (dwDISamples*2) > MAX_SIZE) 
	{
		m_dwDISamples = (MAX_SIZE/2);
		AfxMessageBox(TEXT("This sample supports at most 512K words DMA transfer\nOnly perform 100K words DMA transfer."));
	}
	else
		m_dwDISamples = dwDISamples;

    //setting the DMA buffers
    err = DI_ContMultiBufferSetup (ghCard, in_buf, m_dwDISamples, &BufferId);
	if (err < 0) 
	{
		strMsg.Format(TEXT("DI_ContMultiBufferSetup Error = %d"), err);
		AfxMessageBox( strMsg );
		return;
	}

    err = DI_ContMultiBufferSetup (ghCard, in_buf2, m_dwDISamples, &BufferId);
	if (err < 0) 
	{
		strMsg.Format(TEXT("DI_ContMultiBufferSetup Error = %d"), err);
		AfxMessageBox( strMsg );
		return;
	}

    err = DI_ContMultiBufferSetup (ghCard, in_buf3, m_dwDISamples, &BufferId);
	if (err < 0) 
	{
		strMsg.Format(TEXT("DI_ContMultiBufferSetup Error = %d"), err);
		AfxMessageBox( strMsg );
		return;
	}

    err = DI_ContMultiBufferSetup (ghCard, in_buf4, m_dwDISamples, &BufferId);
	if (err < 0) 
	{
		strMsg.Format(TEXT("DI_ContMultiBufferSetup Error = %d"), err);
		AfxMessageBox( strMsg );
		return;
	}
	
	DI_EventCallBack_x64 (ghCard, 1, DIEnd, (ULONG_PTR) DI_CallBack );
	DI_EventCallBack_x64 (ghCard, 1, DBEvent, (ULONG_PTR) DI_DBCallBack );	

	db_times = 0;
    err = DO_ContWritePort (ghCard, 0, out_buf, 2*m_dwDISamples, 0, 5000000, ASYNCH_OP);
	if (err < 0) 
	{
		strMsg.Format(TEXT("DO_ContWritePort Error = %d"), err);
		AfxMessageBox( strMsg );
		return;
	}


    // start multi-buffered DI
    err = DI_ContMultiBufferStart (ghCard, 0, 1);
	if (err < 0) 
	{
		strMsg.Format(TEXT("DI_ContMultiBufferStart Error = %d"), err);
		AfxMessageBox( strMsg );
		return;
	}

	// clear display area
	redraw_display_area();

	GetDlgItem( IDC_BT_START )->EnableWindow( FALSE );
	GetDlgItem( IDC_BT_STOP )->EnableWindow( TRUE );

}

void C7300bWavDlg::OnStop()
{
	// TODO: Add your control notification handler code here
	U32 count;

	DI_AsyncClear(ghCard, &count);

	GetDlgItem( IDC_BT_START )->EnableWindow( TRUE );
	GetDlgItem( IDC_BT_STOP )->EnableWindow( FALSE);

}


void C7300bWavDlg::display_buffer_data(void)
{
	CClientDC dc_plot(this);
	int nDraw_Bottom, j; 

	int newY, oldY = -1;
	int newX, oldX = -1;
	U32 index, di_data;

	nDraw_Bottom = ( plotRect.bottom - 5 );
	dc_plot.SelectObject( &GreenPen );
	
	for(j=0; j<4; j++)
	{

      for (index=0; index<m_dwDISamples; index++) 
      {
		  	switch((gViewIdx+1+j)%4) 
		  	{
		  	case 0:
				   di_data = in_buf[index];
				   break;
		  	case 1:
				   di_data = in_buf2[index];
				   break;
		  	case 2:
				   di_data = in_buf3[index];
				   break;
		  	case 3:
				   di_data = in_buf4[index];
				   break;
		  	}
			
			newY = (int)( nDraw_Bottom - (n_PlotHeight * ((double)di_data/0x0000ffff) ) );
			newX = (int)( (index+j*m_dwDISamples)*n_PlotWidth/(m_dwDISamples*4) + plotRect.left );
			
			if ( (oldX == -1) && (oldY == -1) )
			{
				dc_plot.MoveTo( newX, newY );
			}
			else
			{
				dc_plot.MoveTo( oldX, oldY );
			}
			
			dc_plot.LineTo( newX, newY );
			oldX = newX; oldY = newY;
      }
  }

}

void C7300bWavDlg::redraw_display_area(void)
{
	CPen *oldPen;

	int oldMode;
	COLORREF oldColor;

	CString y_lable;

	CPen minor_tick( PS_SOLID,1,RGB(132,130,132) );
//		CPen y_grid( PS_SOLID,1,RGB(206,203,132) );

	int i, x_intv, y_intv;
//		long total_sec;

	CClientDC dc_plot(this);

	// draw the base-line for x-y axises
	oldPen = (CPen *)dc_plot.SelectStockObject(BLACK_PEN);

	// redraw the background
	dc_plot.FillSolidRect( plotRect, RGB(0,0,0) );

	// Re-Draw the AREA for Y-Lable
	{
		CBrush DIALOG_BRUSH;
		CRect redraw_area, full_client;

		GetClientRect(&full_client);
		ScreenToClient(&full_client);

		redraw_area.left = full_client.left;
		redraw_area.top = plotRect.top - 5;
		redraw_area.right = plotRect.left - 3;
		redraw_area.bottom = plotRect.bottom + 10;

		DIALOG_BRUSH.CreateSysColorBrush( COLOR_3DFACE );

		dc_plot.FillRect( redraw_area, &DIALOG_BRUSH );

		DIALOG_BRUSH.DeleteObject();
	}

	dc_plot.MoveTo( plotRect.left - 3, plotRect.top );
	dc_plot.LineTo( plotRect.left - 3, plotRect.bottom );

	// calculate the interval for tick/grid
	y_intv = (plotRect.Height() - 10) /y_divider;
	x_intv = plotRect.Width()/x_divider;


	// set the color for tick
	oldColor = dc_plot.SetTextColor( RGB(0,0,0) );
	oldMode = dc_plot.SetBkMode( TRANSPARENT );

	for( i=0; i<= y_divider; i++ )
	{
		CString tick_str;
		CRect tmp_rect, tick_rect;

		// draw the tick for y-axis
		dc_plot.MoveTo( plotRect.left -12, plotRect.bottom -5 - (i*y_intv) );
		dc_plot.LineTo( plotRect.left -3, plotRect.bottom -5 - (i*y_intv) );

		tick_str.Format( _T("0x%04X"), ( ((max_val-min_val)/y_divider) * i)+min_val );

		// calculate the rectangle for text
		dc_plot.DrawText(  tick_str, &tmp_rect, DT_CALCRECT|DT_SINGLELINE );
		tick_rect.right = plotRect.left -14;
		tick_rect.left = tick_rect.right - tmp_rect.Width();
		tick_rect.top = plotRect.bottom -5 - (i*y_intv) - tmp_rect.Height()/2;
		tick_rect.bottom = tick_rect.top + tmp_rect.Height();

		// draw the text 
		dc_plot.DrawText( tick_str, &tick_rect, DT_SINGLELINE|DT_RIGHT );

	}

	// draw the minor_tick for Y axises
	dc_plot.SelectObject(&minor_tick);
	for( i=0; i< y_divider; i++ )
	{
		dc_plot.MoveTo( plotRect.left -9, plotRect.bottom -5 - (i*y_intv) - y_intv/2 );
		dc_plot.LineTo( plotRect.left -4, plotRect.bottom -5 - (i*y_intv) - y_intv/2 );
	}

	dc_plot.SetTextColor( oldColor );
	dc_plot.SetBkMode( oldMode );
	dc_plot.SelectObject( oldPen );
}

void C7300bWavDlg::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
	// TODO: Add your message handler code here and/or call default
    switch ( nSBCode ) 
	{
       case SB_LINEUP :
          m_fSampleRate += 10000.0;
          if (m_fSampleRate > 200000.0 ) m_fSampleRate = 200000.0;
              break;
       case SB_LINEDOWN:
          m_fSampleRate -= 10000;
          if (m_fSampleRate < 10000.0 ) m_fSampleRate = 10000.0;
              break;
    }


	SetDlgItemInt( IDC_EDIT_SAMPLE_RATE, (UINT)(m_fSampleRate/1000) );

	CDialog::OnVScroll(nSBCode, nPos, pScrollBar);
}