childview.cpp

这是在PDA上运行的视频接受

// ChildView.cpp : implementation of the CChildView class
//

#include "stdafx.h"
#include "VideoNet2.h"
#include "ChildView.h"

#include "Mainfrm.h"

#include "DlgConnect.h"

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

/////////////////////////////////////////////////////////////////////////////
// CChildView
unsigned char rgbdata[IMAGE_WIDTH*IMAGE_HEIGHT*3];
int buffersize=IMAGE_WIDTH*IMAGE_HEIGHT*3;

CChildView::CChildView()
{
	_bStart = false;
    m_bFull = false;
	
	// Initialize decompressor
	InitH263Decoder();

    

    _bmpinfo=(BITMAPINFO*)(new char[sizeof(BITMAPINFOHEADER)]);
	_bmpinfo->bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
	_bmpinfo->bmiHeader.biWidth=vertical_size;
	_bmpinfo->bmiHeader.biHeight=vertical_size;
	_bmpinfo->bmiHeader.biPlanes=1;
	_bmpinfo->bmiHeader.biBitCount=24;
	_bmpinfo->bmiHeader.biCompression=BI_RGB;
    _bmpinfo->bmiHeader.biSizeImage=0;
	_bmpinfo->bmiHeader.biClrUsed=0;
}

CChildView::~CChildView()
{
}


BEGIN_MESSAGE_MAP(CChildView,CWnd )
	//{{AFX_MSG_MAP(CChildView)
	ON_WM_PAINT()
	ON_COMMAND(ID_CON_CONNECT, OnConConnect)
	ON_COMMAND(ID_CON_DISCONNECT, OnConDisconnect)
	ON_COMMAND(ID_CON_FULLSCREEN, OnConFullscreen)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CChildView message handlers

BOOL CChildView::PreCreateWindow(CREATESTRUCT& cs) 
{
	if (!CWnd::PreCreateWindow(cs))
		return FALSE;

	cs.style &= ~WS_BORDER;
	cs.lpszClass = AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW|CS_DBLCLKS, 
		NULL, HBRUSH(COLOR_WINDOW+1), NULL);

	return TRUE;
}

void CChildView::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	// TODO: Add your message handler code here
	if (!_bStart)
	{
		CDC* pDisplayMemDC ; 
		CBitmap* pBitmap ; 
		CBitmap* pOldBitmap ;


		pDisplayMemDC = new CDC ;
		pBitmap = new CBitmap ;

		_pDrawDC = GetDC();
  
		pBitmap->LoadBitmap(IDB_BITMAP1);
    
		pDisplayMemDC->CreateCompatibleDC(_pDrawDC);
		pOldBitmap = (CBitmap*)pDisplayMemDC->SelectObject(pBitmap) ;
    
		_pDrawDC->BitBlt(0,0,240,320,pDisplayMemDC,0,0,SRCCOPY) ;
		
		pDisplayMemDC->SelectObject(pOldBitmap) ;
		delete pBitmap;
		delete pDisplayMemDC ;
	}
	
	// Do not call CWnd::OnPaint() for painting messages
}


void CChildView::OnConConnect() 
{
	// TODO: Add your command handler code here

	if (_bStart)
	{
		OnConDisconnect();
	}

	CDlgConnect dlg;
	dlg.m_strIp = _T("10.10.10.20");

	if (dlg.DoModal() == IDOK)
	{		
		if (_sVideo != NULL)
			closesocket(_sVideo);
		
		_sVideo = socket(AF_INET, SOCK_DGRAM, 0);
		sockaddr_in addr;
		memset(&addr, 0, sizeof(addr));
		addr.sin_family = AF_INET;
		addr.sin_addr.s_addr = INADDR_ANY;
		addr.sin_port = htons(PORT_VIDEO);
		if (bind(_sVideo, (sockaddr*)&addr, sizeof(addr)) != 0)
		{
			::MessageBox(NULL,_T("Cannot create video socket"),_T("Message"),MB_OK);
			return;
		}
		
		_hVideo = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)threadVideo, (void*)this, 0, &_threadId);
		if (_hVideo == NULL)
		{
			::MessageBox(NULL,_T("Cannot create recieve thread"),_T("Message"),MB_OK);
			return;
		}
				
		_skSend.remoteaddress = dlg.m_strIp;
		_skSend.CreateSocket(PORT_CONTROL,TYPE_CONTROL);

		if (dlg.n_type == 0)
		{
			_skSend.SendControlMessage(MESG1_CONNECT,NULL);
			_skSend.SendControlMessage(MESG1_CONNECT,NULL);
			_skSend.SendControlMessage(MESG1_CONNECT,NULL);
		}else if (dlg.n_type == 1)
		{
			_skSend.SendControlMessage(MESG2_CONNECT,NULL);
			_skSend.SendControlMessage(MESG2_CONNECT,NULL);
			_skSend.SendControlMessage(MESG2_CONNECT,NULL);
		}

		_bStart = true;

		//Invalidate();
		//UpdateWindow();

	}	
}


void CChildView::OnConDisconnect() 
{
	// TODO: Add your command handler code here
	if (!_bStart)
		return;

	_bStart = false;
	
	TerminateThread(_hVideo, 0);
	_hVideo = NULL;

	_skSend.CloseSocket();
	closesocket(_sVideo);

	
	// Invalidate window so entire client area
	// is redrawn when UpdateWindow is called.
	Invalidate();  
	
	// Update Window to cause View to redraw.
	UpdateWindow();

	
}

DWORD WINAPI CChildView::threadVideo(void* param)
{
    CChildView* parent = (CChildView*)param;
    SOCKET s = parent->_sVideo;
    unsigned char* vdata =  new unsigned char[30000];
    unsigned int vlength = 30000;
    sockaddr address;
    int addlen = sizeof(address);
    while (1)
    {
        int retvalue = recvfrom(s, (char*)vdata, vlength,0, &address, &addlen);
		
		if(retvalue==SOCKET_ERROR)
		{	
			::MessageBox(NULL,_T("SOCKET_ERROR"),NULL,MB_OK);
			//Sleep(10);
			//continue;
			return 1;
		}

		if(retvalue==0)
		{
			::MessageBox(NULL,_T("Server cann't be connected"),_T("Message"),MB_OK);
		}

		parent->DisplayRemoteFrame(vdata,retvalue);
		
    }
    delete[] vdata;

    return 0;
}

void CChildView::DisplayRemoteFrame(unsigned char *data,int size)
{
	int retvalue;


    if(!_bStart)
	    return;

	retvalue=DecompressFrame(m_bFull, data,size,rgbdata,buffersize);

	if(!retvalue)
		return;

	DisplayBt(rgbdata);
}

void CChildView::DisplayBt(unsigned char *data)
{

    CDC* pDisplayMemDC ; 
	CBitmap* pBitmap ; 
	CBitmap* pOldBitmap ;

	pDisplayMemDC = new CDC ;
	pBitmap = new CBitmap ;

    
    PVOID pBits;
	
	static int old_size = 0;
	if (old_size != vertical_size)
	{
		old_size = vertical_size;
		Invalidate();
		UpdateWindow();
	}
	
    if (m_bFull)
    {
        _bmpinfo->bmiHeader.biWidth=vertical_size;
	    _bmpinfo->bmiHeader.biHeight=horizontal_size;
    }
    else
    {
        _bmpinfo->bmiHeader.biWidth=horizontal_size;
	    _bmpinfo->bmiHeader.biHeight=vertical_size;
    }

    HBITMAP hBitmap=CreateDIBSection(_pDrawDC->GetSafeHdc(),
        _bmpinfo,DIB_RGB_COLORS, (void**)&pBits,NULL,0); 

    memcpy(pBits, rgbdata, horizontal_size*vertical_size*3);

    pBitmap->Attach(hBitmap);

	 //_pDrawDC = AfxGetMainWnd()->GetWindowDC();
	_pDrawDC = GetWindowDC();
    
	pDisplayMemDC->CreateCompatibleDC(_pDrawDC);
    pOldBitmap = (CBitmap*)pDisplayMemDC->SelectObject(pBitmap) ;
    
    if (!m_bFull)
	{
		if ((horizontal_size ==176)&&(vertical_size ==144))
		{
			
         	_pDrawDC->BitBlt(30, 40,176,144,pDisplayMemDC,0,0,SRCCOPY);
		}
		else if ((horizontal_size ==320)&&(vertical_size ==240))
		{
			_pDrawDC->StretchBlt(20,40,200,240,pDisplayMemDC,0,0,vertical_size,horizontal_size,SRCCOPY);
		
		}
	}
	else
	{
        _pDrawDC->StretchBlt(0,0,240,320,pDisplayMemDC,0,0,vertical_size,horizontal_size,SRCCOPY);
	}

	pBitmap = pDisplayMemDC->SelectObject(pOldBitmap) ;

	pBitmap->DeleteObject();
	pDisplayMemDC->DeleteDC();
	_pDrawDC->DeleteDC();
	
    delete pBitmap;
	delete pDisplayMemDC ;

}

void CChildView::OnConFullscreen() 
{
	// TODO: Add your command handler code here
	RECT rc; 
	GetWindowRect(&rc); 
    HWND hWnd = AfxGetMainWnd()->GetSafeHwnd();
#ifdef WINCE
	// 20070823 更改
    //SHFullScreen(hWnd, SHFS_HIDETASKBAR | SHFS_HIDESIPBUTTON | SHFS_HIDESTARTICON); 
    ::MoveWindow(hWnd, 0, 0, 240, 320, TRUE);

    ((CMainFrame*)AfxGetMainWnd())->m_wndCommandBar.ShowWindow(FALSE);
#endif
    m_bFull = true;

    Invalidate();
    UpdateWindow();
}

void CChildView::RestoreWindow() 
{
	// TODO: Add your command handler code here
    m_bFull = false;

	RECT rc; 
	GetWindowRect(&rc); 
    HWND hWnd = AfxGetMainWnd()->GetSafeHwnd();
#ifdef WINCE	
	// 20070823 更改
    //SHFullScreen(hWnd, SHFS_SHOWTASKBAR | SHFS_SHOWSIPBUTTON | SHFS_SHOWSTARTICON); 
    ::MoveWindow(hWnd, 0, 20, 240, 300, TRUE);

    ((CMainFrame*)AfxGetMainWnd())->m_wndCommandBar.ShowWindow(TRUE);
#endif

    Invalidate();
    UpdateWindow();
}

BOOL CChildView::PreTranslateMessage(MSG* pMsg) 
{
	// TODO: Add your specialized code here and/or call the base class
    if (pMsg->message == WM_LBUTTONDOWN && m_bFull)
    {
        RestoreWindow();
    }
	
	return CWnd ::PreTranslateMessage(pMsg);
}