simpleplayerdlg.cpp

WINCE下的播放器

// SimplePlayerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SimplePlayer.h"
#include "SimplePlayerDlg.h"

#include "CDXGraph.h"
#include "CMediaSocketClient.h"
#include "CDataAdmin.h"
#include "CListenSocket.h"

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

/////////////////////////////////////////////////////////////////////////////
// CSimplePlayerDlg dialog

CSimplePlayerDlg::CSimplePlayerDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSimplePlayerDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSimplePlayerDlg)
		// 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);
	mFilterGraph = NULL;
	m_pDataList   = NULL;

	mSourceFile  = NULL;
	mSliderTimer = 0;
}

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

BEGIN_MESSAGE_MAP(CSimplePlayerDlg, CDialog)
	//{{AFX_MSG_MAP(CSimplePlayerDlg)
	ON_WM_HELPINFO()
	ON_BN_CLICKED(IDC_BUTTON_OPEN, OnButtonOpen)
	ON_BN_CLICKED(IDC_BUTTON_PLAY, OnButtonPlay)
	ON_BN_CLICKED(IDC_BUTTON_PAUSE, OnButtonPause)
	ON_BN_CLICKED(IDC_BUTTON_STOP, OnButtonStop)
	ON_WM_TIMER()
	ON_WM_HSCROLL()
	ON_WM_DESTROY()
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_GRAPHNOTIFY, OnGraphNotify)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSimplePlayerDlg message handlers

BOOL CSimplePlayerDlg::OnInitDialog()
{
	RETAILMSG( 1, ( TEXT(" INIT\r\n ") ) );

	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

	// TODO: Add extra initialization here
	// COM initialize...
	if (FAILED(CoInitialize(NULL)))
    {
	//	AfxMessageBox(" COM初始化失败 ");
		return FALSE;
	}
	//创建一个数据接收队列管理器
	m_pDataList = new CDataAdmin();
	//创建一个Fliter Graph封装类对象
	mFilterGraph = new CDXGraph(m_pDataList);
	//创建Fliter Graph
	mFilterGraph->Create();

    //初始化进度控件
	mSliderGraph.SetRange(0, 1000);
	mFilterGraph->Create();
	mSliderGraph.SetPos(0);

	//创建一个监听的Socket
	bool  pass = true;
	m_pListener = new CListenSocket();
	//监听的端口为BASE_SOCKET_PORT，被定义为10025
	pass = m_pListener->Create(BASE_SOCKET_PORT);
	if (pass)
	{
		//开始监听是否有网络计算机连接
		pass = m_pListener->StartListen();
	}
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CSimplePlayerDlg::OnHelpInfo()
{
	// TODO: implement help here
	MessageBox(_T("Help"));
}

void CSimplePlayerDlg::OnDestroy() 
{
	CDialog::OnDestroy();
	
	// TODO: Add your message handler code here
	// Release buffers
	SAFE_DELETE(mFilterGraph)
	Sleep(1000);
	SAFE_DELETE(m_pDataList)

	// Finished with COM
	CoUninitialize();
	
}


void CSimplePlayerDlg::OnButtonOpen() 
{
	RETAILMSG( 1, ( TEXT(" OPEN \r\n ") ) );

	// TODO: Add your control notification handler code here
    PWSTR  strFilter = L"mp3 rm wma File (*.mp3;*.rm;*.wma)|*.mp3;*.rm;*.wma|"
                       L"All Files (*.*)|*.*||";
	CFileDialog dlgOpen(TRUE, NULL, NULL, OFN_PATHMUSTEXIST | OFN_HIDEREADONLY, 
		strFilter);
	if (IDOK == dlgOpen.DoModal()) 
	{
		CString PathName = dlgOpen.GetPathName();
		PathName.Format(_T("%s"), dlgOpen.GetPathName());
		mSourceFile = PathName.GetBuffer(MAX_PATH);
		
    	// Rebuild the file playback filter graph
		CreateGraph();
	}
	
}

void CSimplePlayerDlg::OnButtonPlay() 
{
	RETAILMSG( 1, ( TEXT(" PLAY \r\n ") ) );

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

//创建Fliter Graph
void CSimplePlayerDlg::CreateGraph()
{
	DestroyGraph();

	if (mFilterGraph->Create())
	{
		// Render the source clip
		int iSize;
        char* pszMultiByte;
        
        //获得所需缓冲区大小
		iSize = WideCharToMultiByte(CP_ACP, 0, mSourceFile, -1, NULL, 0, NULL, NULL);
		//为缓冲区分配空间
        pszMultiByte = (char*)malloc((iSize+1)/**sizeof(char)*/);

		//填充缓冲区
        WideCharToMultiByte(CP_ACP, 0, mSourceFile, -1, pszMultiByte, iSize, NULL, NULL);

//		RETAILMSG( 1, ( TEXT(" pathname \r\n "), pszMultiByte ) );

		mFilterGraph->RenderFile(pszMultiByte);
        
		// Show the first frame
		mFilterGraph->Pause();
	}
}

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

		delete mFilterGraph;
		mFilterGraph = NULL;
	}
}

//定时器消息处理函数 ，实现进度条的即时显示
void CSimplePlayerDlg::OnTimer(UINT nIDEvent) 
{
	if (nIDEvent == mSliderTimer && mFilterGraph)
	{
		double pos = 0, duration = 1.;
		mFilterGraph->GetCurrentPosition(&pos);//获得当前的播放时间点
		mFilterGraph->GetDuration(&duration);
		// Get the new position, and update the slider
		int newPos = int(pos * 1000 / duration);
		if (mSliderGraph.GetPos() != newPos)
		{
			mSliderGraph.SetPos(newPos); //设置进度控件的当前位置值 
		}
	}

	CDialog::OnTimer(nIDEvent);
}

BOOL CSimplePlayerDlg::DestroyWindow() 
{
	if (mSliderTimer)
	{
		KillTimer(mSliderTimer);
		mSliderTimer = 0;
	}
	
	return CDialog::DestroyWindow();
}

//实现进度条的随机拖动
void CSimplePlayerDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	if (pScrollBar->GetSafeHwnd() == mSliderGraph.GetSafeHwnd())
	{
		if (mFilterGraph)
		{
			// Calculate the current seeking position
			double duration = 1.;
			mFilterGraph->GetDuration(&duration);
			double pos = duration * mSliderGraph.GetPos() / 1000.;
			mFilterGraph->SetCurrentPosition(pos);
		}		
	}
	else
	{
		CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
	}
}

// Deal with the graph events ,处理Fliter Graph事件，消息响应函数
LRESULT CSimplePlayerDlg::OnGraphNotify(WPARAM inWParam, LPARAM inLParam)
{
	IMediaEventEx * pEvent = NULL;

	//在消息响应函数中获取Fliter Graph的事件通知，并作相应处理
	if (mFilterGraph && (pEvent = mFilterGraph->GetEventHandle()))
	{
		LONG   eventCode = 0, eventParam1 = 0, eventParam2 = 0;
		while (SUCCEEDED(pEvent->GetEvent(&eventCode, &eventParam1, &eventParam2, 0)))
		{ 
			// Spin through the events
			pEvent->FreeEventParams(eventCode, eventParam1, eventParam2);
			switch (eventCode)
			{
			case EC_COMPLETE://Fliter Graph中的数据回放完毕
				OnButtonPause();
				mFilterGraph->SetCurrentPosition(0);
				break;
			
			case EC_USERABORT://用户中断回放
			case EC_ERRORABORT://Fliter Graph运行出错
				OnButtonStop();
				break;

			default:
				break;
			}
		}
	}
	return 0;
}