hxsymbianudpsock.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: hxsymbianudpsock.cpp,v 1.5.2.5 2004/07/09 02:08:48 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
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 * the file under the current version of the RealNetworks Community
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 * will apply. You may also obtain the license terms directly from
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 * 
 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
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 * ***** END LICENSE BLOCK ***** */

#include "platform/symbian/hxsymbianudpsock.h"
#include "hxsymbiansockhlp.h"

#include "debug.h"
#include "hxassert.h"
#include "ihxpckts.h"
#include "smartptr.h"

#include <in_sock.h>

#define D_UDPSOCKET 0x10000000

class HXSymbianUDPWriter : public CActive
{
public:
    HXSymbianUDPWriter(HXSymbianUDPSocket* pParent);
    ~HXSymbianUDPWriter();

    void Write(RSocket& socket, ULONG32 ulAddr, UINT16 nPort,
               IHXBuffer* pBuffer);
    
private:
    void RunL();
    void DoCancel();

    HXSymbianUDPSocket* m_pParent;
    IHXBuffer* m_pBuffer;
    TInetAddr m_sendAddr;
    TPtrC8 m_bufDes;
};

HXSymbianUDPWriter::HXSymbianUDPWriter(HXSymbianUDPSocket* pParent) :
    CActive(EPriorityStandard),
    m_pParent(pParent),
    m_pBuffer(0)
{
    CActiveScheduler::Add(this);
}

HXSymbianUDPWriter::~HXSymbianUDPWriter()
{    
    if (IsActive())
        Cancel();

    HX_RELEASE(m_pBuffer);
    m_pParent = 0;
}
    
void HXSymbianUDPWriter::Write(RSocket& socket, 
                               ULONG32 ulAddr,
                               UINT16 nPort,
                               IHXBuffer* pBuffer)
{
    HX_RELEASE(m_pBuffer);

    m_pBuffer = pBuffer;

    if (m_pBuffer)
    {
        m_pBuffer->AddRef();
    
        m_bufDes.Set(m_pBuffer->GetBuffer(), m_pBuffer->GetSize());

        m_sendAddr.SetAddress(ulAddr);
        m_sendAddr.SetPort(nPort);

        socket.SendTo(m_bufDes, m_sendAddr, 0, iStatus);
        SetActive();
    }
}

void HXSymbianUDPWriter::RunL()
{
    HX_RESULT res = HXR_FAILED;

    if (iStatus == KErrNone)
    {
        res = HXR_OK;
    }
    else if(iStatus == KErrEof)
    {
        res = HXR_STREAM_DONE;
    }
    else if(iStatus == KErrNoMemory)
    {
        res = HXR_OUTOFMEMORY;
    }

    HX_RELEASE(m_pBuffer);

    m_pParent->OnWriteDone(res);
}

void HXSymbianUDPWriter::DoCancel()
{}

class HXSymbianUDPWriteInfo
{
public:
    HXSymbianUDPWriteInfo(ULONG32    ulAddr, UINT16     nPort,
                          IHXBuffer* pBuffer);
    ~HXSymbianUDPWriteInfo();

    ULONG32 Address() const;
    UINT16 Port() const;
    IHXBuffer* GetBuffer();

private:
    ULONG32 m_ulAddr;
    UINT16 m_nPort;
    IHXBuffer* m_pBuffer;
};

HXSymbianUDPWriteInfo::HXSymbianUDPWriteInfo(ULONG32    ulAddr, 
                                             UINT16     nPort,
                                             IHXBuffer* pBuffer) :
    m_ulAddr(ulAddr),
    m_nPort(nPort),
    m_pBuffer(pBuffer)
{
    if (m_pBuffer)
    {
        m_pBuffer->AddRef();
    }
}

HXSymbianUDPWriteInfo::~HXSymbianUDPWriteInfo()
{
    HX_RELEASE(m_pBuffer);
}

ULONG32 HXSymbianUDPWriteInfo::Address() const
{
    return m_ulAddr;
}

UINT16 HXSymbianUDPWriteInfo::Port() const
{
    return m_nPort;
}

IHXBuffer* HXSymbianUDPWriteInfo::GetBuffer()
{
    IHXBuffer* pRet = m_pBuffer;

    if (pRet)
        pRet->AddRef();

    return pRet;
}

class HXSymbianUDPReader : public CActive
{
public:
    HXSymbianUDPReader(HXSymbianUDPSocket* pParent,
                       IHXCommonClassFactory* pCCF);
    ~HXSymbianUDPReader();
    
    HX_RESULT Read(RSocket& socket, UINT16);

private:
    void RunL();
    void DoCancel();

    HXSymbianUDPSocket* m_pParent;
    IHXBuffer* m_pBuffer;
    TPtr8 m_bufDes;
    TInetAddr m_recvAddr;
    IHXCommonClassFactory* m_pCCF;
};

HXSymbianUDPReader::HXSymbianUDPReader(HXSymbianUDPSocket* pParent,
                                       IHXCommonClassFactory* pCCF) :
    CActive(EPriorityStandard),
    m_pParent(pParent),
    m_pBuffer(0),
    m_bufDes(0, 0),
    m_pCCF(pCCF)
{
    CActiveScheduler::Add(this);

    if (m_pCCF)
    {
        m_pCCF->AddRef();
    }
}

HXSymbianUDPReader::~HXSymbianUDPReader()
{
    if (IsActive())
        Cancel();
    
    HX_RELEASE(m_pBuffer);
    HX_RELEASE(m_pCCF);
    m_pParent = 0;
}

HX_RESULT HXSymbianUDPReader::Read(RSocket& socket, UINT16 uSize)
{
    HX_RESULT res = HXR_FAILED;
    if (m_pParent)
    {
        res = HXSymbianSocketHelper::ResizeOrCreate(m_pCCF, uSize, m_pBuffer);

        if (HXR_OK == res)
        {
            m_bufDes.Set(m_pBuffer->GetBuffer(), 0, m_pBuffer->GetSize());
            
            socket.RecvFrom(m_bufDes, m_recvAddr, 0, iStatus);
            SetActive();
        }
    }

    return res;
}

void HXSymbianUDPReader::RunL()
{
    HX_RESULT res = HXR_FAILED;
    
    if (iStatus == KErrNone )
    {
        res = HXR_OK;
    }
    else if(iStatus == KErrEof)
    {
        res = HXR_STREAM_DONE;
    }
    else if(iStatus == KErrNoMemory)
    {
        res = HXR_OUTOFMEMORY;
    }
    
    IHXBuffer* pBuffer = 0;
    if( res != HXR_OUTOFMEMORY )
    {
        HXSymbianSocketHelper::CopyOrTransfer(m_pCCF, m_bufDes.Length(), 
                                              m_pBuffer, pBuffer);
    }

    // All error handling is done through the response object.
    m_pParent->OnReadDone(res,
                          (ULONG32)m_recvAddr.Address(),
                          m_recvAddr.Port(),
                          pBuffer);

    HX_RELEASE(pBuffer);
}

void HXSymbianUDPReader::DoCancel()
{}

HXSymbianUDPSocket::HXSymbianUDPSocket(IHXCommonClassFactory* pCCF) :
    m_lRefCount(0),
    m_pResponse(0),
    m_state(udpNotOpen),
    m_ulRemoteAddr(0),
    m_nRemotePort(0),
    m_pWriter(0),
    m_pReader(0)
{
    m_pWriter = new HXSymbianUDPWriter(this);
    m_pReader = new HXSymbianUDPReader(this, pCCF);

    if (pCCF && m_pWriter && m_pReader &&
        (m_socketServ.Connect() == KErrNone) &&
        (m_socket.Open(m_socketServ, KAfInet, 
                       KSockDatagram, KProtocolInetUdp) == KErrNone))
    {
        m_state = udpOpen;
    }
}

HXSymbianUDPSocket::~HXSymbianUDPSocket()
{
    if (m_state != udpNotOpen)
    {
        CloseSocket(HXR_OK);

        m_socket.Close();
        m_socketServ.Close();
    }

    HX_DELETE(m_pWriter);
    HX_DELETE(m_pReader);

    HX_RELEASE(m_pResponse);