ceplayerdlg.cpp

CE下面的小型播放器,非常简单

// CEPlayerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "CEPlayer.h"
#include "CEPlayerDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CCEPlayerDlg dialog

CCEPlayerDlg::CCEPlayerDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCEPlayerDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCEPlayerDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	mFilterGraph = NULL;
	mSourceFile  = "";
	mSliderTimer = 0;
}

void CCEPlayerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCEPlayerDlg)
	DDX_Control(pDX, IDC_STATIC_VIDEO, mVideoWindow);
	DDX_Control(pDX, IDC_SLIDER1, mSliderGraph);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCEPlayerDlg, CDialog)
	//{{AFX_MSG_MAP(CCEPlayerDlg)
	ON_BN_CLICKED(IDC_CEPLAYER_EXIT, OnCeplayerExit)
	ON_BN_CLICKED(IDC_CEPLAYER_OPEN, OnCeplayerOpen)
	ON_BN_CLICKED(IDC_CEPLAYER_PLAY, OnCeplayerPlay)
	ON_BN_CLICKED(IDC_CEPLAYER_PAUSE, OnCeplayerPause)
	ON_BN_CLICKED(IDC_CEPLAYER_STOP, OnCeplayerStop)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCEPlayerDlg message handlers

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

	// 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
	
	CenterWindow(GetDesktopWindow());	// center to the hpc screen

	mVideoWindow.ModifyStyle(0, WS_CLIPCHILDREN);
	// TODO: Add extra initialization here
	mSliderGraph.SetRange(0, 1000);
	mSliderGraph.SetPos(0);
	return TRUE;  // return TRUE  unless you set the focus to a control
}



void CCEPlayerDlg::OnCeplayerExit() 
{
	// TODO: Add your control notification handler code here
	OnOK();
}

void CCEPlayerDlg::OnCeplayerOpen() 
{
	// TODO: Add your control notification handler code here
	CString    strFilter = "AVI File (*.avi)|*.avi|";
	strFilter += "MPEG File (*.mpg;*.mpeg)|*.mpg;*.mpeg|";
	strFilter += "Mp3 File (*.mp3)|*.mp3|";
	strFilter += "Wave File (*.wav)|*.wav|";
	strFilter += "All Files (*.*)|*.*|";
	CFileDialog dlgOpen(TRUE, NULL, NULL, OFN_PATHMUSTEXIST | OFN_HIDEREADONLY, 
		strFilter, this);
	if (IDOK == dlgOpen.DoModal()) 
	{
		mSourceFile = dlgOpen.GetPathName();
		// Rebuild the file playback filter graph
		CreateGraph();
	}
}

void CCEPlayerDlg::OnCeplayerPlay() 
{
	// TODO: Add your control notification handler code here
		if (mFilterGraph)
	{
		mFilterGraph->Run();
		// Start a timer
		if (mSliderTimer == 0)
		{
			mSliderTimer = SetTimer(SLIDER_TIMER, 100, NULL);
		}
	}
}

void CCEPlayerDlg::OnCeplayerPause() 
{
	// TODO: Add your control notification handler code here
		if (mFilterGraph)
	{
		mFilterGraph->Pause();
		// Start a timer
		if (mSliderTimer == 0)
		{
			mSliderTimer = SetTimer(SLIDER_TIMER, 100, NULL);
		}
	}
}

void CCEPlayerDlg::OnCeplayerStop() 
{
	// TODO: Add your control notification handler code here
		if (mFilterGraph)
	{
		mFilterGraph->SetCurrentPosition(0);
		mFilterGraph->Stop();
		// Stop the timer
		if (mSliderTimer)
		{
			KillTimer(mSliderTimer);
			mSliderTimer = 0;
		}
	}
}

void CCEPlayerDlg::CreateGraph()
{
	DestroyGraph();

	mFilterGraph = new CDXGraph();
	if (mFilterGraph->Create())
	{
		// Render the source clip
		mFilterGraph->RenderFile(mSourceFile);
		// Set video window and notification window
		mFilterGraph->SetDisplayWindow(mVideoWindow.GetSafeHwnd());
		mFilterGraph->SetNotifyWindow(this->GetSafeHwnd());
		// Show the first frame
		mFilterGraph->Pause();
	}

}

void CCEPlayerDlg::DestroyGraph()
{
		if (mFilterGraph)
	{
		// Stop the filter graph first
		mFilterGraph->Stop();
		mFilterGraph->SetNotifyWindow(NULL);

		delete mFilterGraph;
		mFilterGraph = NULL;
	}

}

void CCEPlayerDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	if (nIDEvent == mSliderTimer && mFilterGraph)
	{
		double pos = 0, duration = 1.;
		mFilterGraph->GetCurrentPosition(&pos);
		mFilterGraph->GetDuration(&duration);
		// Get the new position, and update the slider
		int newPos = int(pos * 1000 / duration);
		if (mSliderGraph.GetPos() != newPos)
		{
			mSliderGraph.SetPos(newPos);
		}
	}
	CDialog::OnTimer(nIDEvent);
}

CCEPlayerDlg::~CCEPlayerDlg()
{
	DestroyGraph();
}

BOOL CCEPlayerDlg::DestroyWindow() 
{
	// TODO: Add your specialized code here and/or call the base class
	if (mSliderTimer)
	{
		KillTimer(mSliderTimer);
		mSliderTimer = 0;
	}
	return CDialog::DestroyWindow();
}