yogaplaydlg.cpp

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//////////////////////////////////////////////////////////////////////////////
// YogaPlayDlg.cpp
//
// Yoga MPEG Audio Player
//
// 09/11/1999	fOSSiL		Initial version
//

#include "stdafx.h"
#include "YogaPlay.h"
#include "YogaPlayDlg.h"
#include "playw32.h"

#ifdef _DEBUG
#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()


/////////////////////////////////////////////////////////////////////////////
// CStereoDisplay

CStereoDisplay::CStereoDisplay()
{
	HDC hDC = ::GetDC(NULL);

	LOGFONT logFont;
	memset(&logFont, 0, sizeof(LOGFONT));

	logFont.lfCharSet = DEFAULT_CHARSET;
	lstrcpyn(logFont.lfFaceName, "MS Sans Serif", sizeof(logFont.lfFaceName));

	POINT pt;
	pt.y = GetDeviceCaps(hDC, LOGPIXELSY) * 180;
	pt.y /= 720;    // 72 points/inch, 10 decipoints/point
	DPtoLP(hDC, &pt, 1);
	POINT ptOrg = {0, 0};
	DPtoLP(hDC, &ptOrg, 1);
	logFont.lfHeight = -abs(pt.y - ptOrg.y);

	Font.Attach(CreateFontIndirect(&logFont));
	
	::ReleaseDC(NULL, hDC);
}

CStereoDisplay::~CStereoDisplay()
{
	Font.DeleteObject();
}


BEGIN_MESSAGE_MAP(CStereoDisplay, CStatic)
	//{{AFX_MSG_MAP(CStereoDisplay)
	ON_WM_PAINT()
	ON_WM_ERASEBKGND()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStereoDisplay message handlers

void CStereoDisplay::OnPaint() 
{
	// Do not call CStatic::OnPaint() for painting messages
	CPaintDC dc(this); // device context for painting
	Redraw(&dc);
}

BOOL CStereoDisplay::OnEraseBkgnd(CDC* pDC) 
{
	RECT WinRect;
	GetClientRect(&WinRect);
	return FillRect(pDC->m_hDC, &WinRect, (HBRUSH)GetStockObject(BLACK_BRUSH));
}

void CStereoDisplay::SetText(LPCTSTR Text)
{
	sText = Text;
	Redraw();
}

void CStereoDisplay::Redraw(CDC* pDC)
{
	BOOL bCustDC = FALSE;
	if (pDC == NULL) {
		bCustDC = TRUE;
		pDC = GetDC();
	}
	
	pDC->SaveDC();

	CRect WinRect;
	GetClientRect(&WinRect);

	pDC->SetTextColor(0x00E000);
	pDC->SetBkColor(0);
	pDC->SetTextAlign(TA_CENTER | TA_BASELINE);

	// select our font
	pDC->SelectObject(&Font);

	pDC->ExtTextOut(WinRect.Width() / 2, WinRect.Height() / 2 + 4, ETO_OPAQUE, WinRect, sText, NULL);

	pDC->RestoreDC(-1);
	
	if (bCustDC)
		ReleaseDC(pDC);
}

/////////////////////////////////////////////////////////////////////////////
// CYogaPlayDlg dialog

void CYogaPlayDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CYogaPlayDlg)
	DDX_Control(pDX, IDC_VOLUME, Volume);
	DDX_Control(pDX, IDC_SONGPOS, SongPos);
	DDX_Control(pDX, IDC_EJECT, btnEject);
	DDX_Control(pDX, IDC_RW, btnRewind);
	DDX_Control(pDX, IDC_FFW, btnFastFwd);
	DDX_Control(pDX, IDC_PAUSE, btnPause);
	DDX_Control(pDX, IDC_STOP, btnStop);
	DDX_Control(pDX, IDC_PLAY, btnPlay);
	DDX_Control(pDX, IDC_DISPLAY, Display);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CYogaPlayDlg, CDialog)
	//{{AFX_MSG_MAP(CYogaPlayDlg)
	ON_COMMAND(ID_HELP_ABOUT, OnHelpAbout)
	ON_COMMAND(IDHELP, OnHelp)
	ON_COMMAND(ID_OPTIONS_REMAIN, OnTrackTimeWay)
	ON_COMMAND(ID_OPTIONS_CONTPLAY, OnContPlay)
	ON_COMMAND(ID_FILE_PLAYMPX, OnFileOpen)
	ON_COMMAND(ID_COMMANDS_EJECT, OnEject)
	ON_COMMAND(ID_COMMANDS_STOP, OnStop)
	ON_COMMAND(ID_COMMANDS_PAUSE, OnPause)
	ON_COMMAND(ID_COMMANDS_PLAY, OnPlay)
	ON_COMMAND(ID_COMMANDS_RW, OnSkipBackward)
	ON_COMMAND(ID_COMMANDS_FFW, OnSkipForward)
	ON_WM_KEYDOWN()
	ON_WM_HELPINFO()
	ON_WM_SYSCOMMAND()
	ON_WM_TIMER()
	ON_WM_HSCROLL()
	ON_WM_ACTIVATE()
	ON_BN_CLICKED(IDC_EJECT, OnEject)
	ON_BN_CLICKED(IDC_STOP, OnStop)
	ON_BN_CLICKED(IDC_PAUSE, OnPause)
	ON_BN_CLICKED(IDC_PLAY, OnPlay)
	ON_BN_CLICKED(IDC_FFW, OnSkipForward)
	ON_BN_CLICKED(IDC_RW, OnSkipBackward)
	ON_WM_VSCROLL()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

CYogaPlayDlg::CYogaPlayDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CYogaPlayDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CYogaPlayDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32

	bTimeFwd = TRUE;
	bContPlay = FALSE;
	bPaused = FALSE;
	bPlaying = FALSE;
	bUpdatePos = TRUE;
	bPlayerBusy = FALSE;

	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_hAccel = LoadAccelerators(AfxGetResourceHandle(), MAKEINTRESOURCE(IDR_MAINACCEL));
	Menu.LoadMenu(IDR_MAINMENU);
	BtnImages.Create(IDB_BUTTONS, 16, 1, 0x808000);
}

UINT DlgBtnIDs[] = {IDC_PLAY, IDC_PAUSE, IDC_STOP, IDC_RW, IDC_FFW, IDC_EJECT, 0};
UINT DlgBtnIcons[] = {0, 1, 2, 3, 6, 7};
MPEGPLAYLIST* pList = (MPEGPLAYLIST*) new long(0);
UINT ListSize = 0;
UINT nCurFile = (DWORD)-1;
MPEGSTREAMINFO Info;
HMIXEROBJ hMixer = NULL;
DWORD MixerLine = 0;
MIXERCONTROL VolCtrl;

int InitMixer()
{
	if (mixerGetNumDevs() < 1 || MMSYSERR_NOERROR != mixerOpen((HMIXER*)&hMixer, 0, NULL, 0, MIXER_OBJECTF_MIXER))
		return FALSE;

	MIXERLINE ml;
	ml.cbStruct = sizeof(ml);
	ml.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;
	if (MMSYSERR_NOERROR != mixerGetLineInfo(hMixer, &ml, MIXER_GETLINEINFOF_COMPONENTTYPE)) {
		mixerClose((HMIXER)hMixer);
		hMixer = NULL;
		return FALSE;
	}
	MixerLine = ml.dwLineID;

	MIXERLINECONTROLS mlcs;
	mlcs.cbStruct = sizeof(mlcs);
	mlcs.dwLineID = ml.dwLineID;
	mlcs.dwControlType = MIXERCONTROL_CONTROLTYPE_VOLUME;
	mlcs.cbmxctrl = sizeof(MIXERCONTROL);
	mlcs.pamxctrl = &VolCtrl;
	if (MMSYSERR_NOERROR != mixerGetLineControls(hMixer, &mlcs, MIXER_GETLINECONTROLSF_ONEBYTYPE)) {
		mixerClose((HMIXER)hMixer);
		hMixer = NULL;
		return FALSE;
	}

	return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// CYogaPlayDlg message handlers

BOOL CYogaPlayDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	if (!MpegOpenDevice()) {
		AfxMessageBox("MPEG Device did not initialize", MB_OK | MB_ICONSTOP);
//		EndDialog(1);
	}

	// 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 both icons
	SetMenu(&Menu);

	SetTimer(1, 500, NULL);

	for (int i = 0; DlgBtnIDs[i] != 0; i++)
		GetDlgItem(DlgBtnIDs[i])->SendMessage(BM_SETIMAGE, IMAGE_ICON, (LPARAM)BtnImages.ExtractIcon(DlgBtnIcons[i]));

	// init song position slider
	SongPos.SetRangeMin(0);
	SongPos.SetRangeMax(1000000);
	SongPos.SetPageSize(1000000/10);
	SongPos.SetLineSize(1000000/200);

	// init volume control
	if (InitMixer()) {
		Volume.SetRangeMin(VolCtrl.Bounds.dwMinimum);
		Volume.SetRangeMax(VolCtrl.Bounds.dwMaximum);
		int Range = VolCtrl.Bounds.dwMaximum - VolCtrl.Bounds.dwMinimum;
		Volume.SetPageSize(Range/10);
		Volume.SetLineSize(Range/200);
		RefreshVolume();
	} else {
		Volume.EnableWindow(FALSE);
	}
		
	RefreshDisplay();

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

void CYogaPlayDlg::OnHelpAbout()
{
	CAboutDlg Dlg;
	Dlg.DoModal();
}

void CYogaPlayDlg::OnTrackTimeWay()
{
	bTimeFwd = !bTimeFwd;
	Menu.CheckMenuItem(ID_OPTIONS_REMAIN, bTimeFwd ? MF_UNCHECKED : MF_CHECKED);
}


void CYogaPlayDlg::OnFileOpen()
{
	if (AskFiles()) {
		OnStop();
		MpegSetPlayList(pList, ListSize);
		OnPlay();
	}
}

int CYogaPlayDlg::AskFiles()
{
	CHAR Files[4096] = "";

	OPENFILENAME ofn;
	ofn.lStructSize = sizeof(ofn);
	ofn.hwndOwner = m_hWnd;
	// add "Playlists (*.m3u;*.pls)\0*.m3u;*.pls\0" when playlist support is coded
	ofn.lpstrFilter = "MPEG Audio (*.mp3;*.mp2)\0*.mp2;*.mp3\0All Files (*.*)\0*.*\0\0";
	ofn.lpstrCustomFilter = NULL;
	ofn.nFilterIndex = 1;