DownloadTransfer.h

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//
// DownloadTransfer.h
//
// Copyright (c) Shareaza Development Team, 2002-2005.
// This file is part of SHAREAZA (www.shareaza.com)
//
// Shareaza is free software; you can redistribute it
// and/or modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// Shareaza is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Shareaza; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//

#if !defined(AFX_DOWNLOADTRANSFER_H__DB393F56_C75B_424C_85E5_FF44300E255B__INCLUDED_)
#define AFX_DOWNLOADTRANSFER_H__DB393F56_C75B_424C_85E5_FF44300E255B__INCLUDED_

#pragma once

#include "Transfer.h"
#include "FileFragments.hpp"

class CDownload;
class CDownloadSource;

class CDownloadTransfer : public CTransfer
{
// Construction
public:
        CDownloadTransfer(CDownloadSource* pSource, PROTOCOLID nProtocol);
        virtual ~CDownloadTransfer();

// Attributes
public:
        PROTOCOLID                      m_nProtocol;
        CDownload*                      m_pDownload;
        CDownloadTransfer*      m_pDlPrev;
        CDownloadTransfer*      m_pDlNext;
        CDownloadSource*        m_pSource;
public:
        int                     m_nState;
        int                     m_nQueuePos;
        int                     m_nQueueLen;
        CString         m_sQueueName;
public:
        QWORD           m_nOffset;
        QWORD           m_nLength;
        QWORD           m_nPosition;
        QWORD           m_nDownloaded;
public:
        BOOL            m_bWantBackwards;
        BOOL            m_bRecvBackwards;

// Operations
public:
        virtual BOOL    Initiate() = 0;
        virtual void    Close(TRISTATE bKeepSource);
        virtual void    Boost();
        virtual DWORD   GetAverageSpeed();
        virtual DWORD   GetMeasuredSpeed();
    virtual BOOL        SubtractRequested(FF::SimpleFragmentList& ppFragments) = 0;
        virtual BOOL    UnrequestRange(QWORD nOffset, QWORD nLength) { return FALSE; }
        virtual CString GetStateText(BOOL bLong);
        virtual BOOL    OnRun();
        void    SetState(int nState);
protected:
        void    ChunkifyRequest(QWORD* pnOffset, QWORD* pnLength, QWORD nChunk, BOOL bVerifyLock);

};

enum
{
        dtsNull, dtsConnecting, dtsRequesting, dtsHeaders, dtsDownloading,
        dtsFlushing, dtsTiger, dtsHashset, dtsMetadata, dtsBusy, dtsEnqueue, dtsQueued,
        dtsTorrent,

        dtsCountAll = -1,
        dtsCountNotQueued = -2,
        dtsCountNotConnecting = -3,
        dtsCountTorrentAndActive = -4
};


#endif // !defined(AFX_DOWNLOADTRANSFER_H__DB393F56_C75B_424C_85E5_FF44300E255B__INCLUDED_)

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