fswtchr_passthrough.h
上传用户:zhongxx05
上传日期:2007-06-06
资源大小:33641k
文件大小:4k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _FSWTCHR_PASSTHROUGH_H_
- #define _FSWTCHR_PASSTHROUGH_H_
- /****************************************************************************
- * Includes
- */
- #include "hxfswch.h"
- #include "hxcomm.h"
- /****************************************************************************
- *
- * Class:
- * CFileSwitcher
- *
- * Purpose:
- * Enables use of multiple files by multiple client objects.
- *
- */
- class CFileSwitcherPassthrough : public IHXFileSwitcher,
- public IHXFileResponse,
- public IHXThreadSafeMethods
- {
- public:
- /*
- * Constructor/Destructor
- */
- CFileSwitcherPassthrough(void);
- /*
- * IUnknown methods
- */
- STDMETHOD(QueryInterface) (THIS_
- REFIID riid,
- void** ppvObj);
- STDMETHOD_(ULONG32,AddRef) (THIS);
- STDMETHOD_(ULONG32,Release) (THIS);
- /*
- * IHXFileSwitcher methods
- */
- STDMETHOD(Init) (THIS_
- IHXFileObject* pFileObject,
- ULONG32 ulFlags,
- IHXFileResponse* pResponse,
- IUnknown* pContext,
- UINT16 uMaxChildCount);
- STDMETHOD(Read) (THIS_
- ULONG32 ulSize,
- IHXFileResponse* pResponse,
- const char* pFileName = NULL);
- STDMETHOD(Write) (THIS_
- IHXBuffer* pBuffer,
- IHXFileResponse* pResponse,
- const char* pFileName = NULL);
- STDMETHOD(Seek) (THIS_
- ULONG32 ulOffset,
- BOOL bRelative,
- IHXFileResponse* pResponse,
- const char* pFileName = NULL);
- STDMETHOD(Close) (THIS_
- IHXFileResponse *pResponse,
- const char* pFileName = NULL);
- STDMETHOD(Advise) (THIS_
- ULONG32 ulInfo,
- const char* pFileName = NULL);
- /*
- * IHXFileResponse methods
- */
- STDMETHOD(InitDone) (THIS_
- HX_RESULT status);
- STDMETHOD(CloseDone) (THIS_
- HX_RESULT status);
- STDMETHOD(ReadDone) (THIS_
- HX_RESULT status,
- IHXBuffer* pBuffer);
- STDMETHOD(WriteDone) (THIS_
- HX_RESULT status);
- STDMETHOD(SeekDone) (THIS_
- HX_RESULT status);
- /*
- * IHXThreadSafeMethods method
- */
- STDMETHOD_(UINT32,IsThreadSafe) (THIS);
- private:
- void Reset(void);
- void HandleFailureSync(void);
- typedef enum
- {
- FSWCHR_Offline,
- FSWCHR_Ready,
- FSWCHR_ProcInit,
- FSWCHR_ProcRead,
- FSWCHR_ProcWrite,
- FSWCHR_ProcSeek,
- FSWCHR_ProcClose,
- FSWCHR_ProcAdvise
- } FileSwitcherState;
- FileSwitcherState m_State;
- IHXFileObject* m_pFileObject;
- IHXFileResponse* m_pResponse;
- LONG32 m_lRefCount;
- ~CFileSwitcherPassthrough();
- PRIVATE_DESTRUCTORS_ARE_NOT_A_CRIME
- };
- #endif // _FSWTCHR_PASSTHROUGH_H_