fswtchr.h
上传用户:zhongxx05
上传日期:2007-06-06
资源大小:33641k
文件大小:6k
- /* ***** 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_H_
- #define _FSWTCHR_H_
- #ifdef QTCONFIG_FSWITCHER
- /****************************************************************************
- * Defines
- */
- /****************************************************************************
- * Includes
- */
- #include "hlxclib/string.h"
- #include "hxfswch.h"
- #include "hxcomm.h"
- /****************************************************************************
- *
- * Class:
- * CFileSwitcher
- *
- * Purpose:
- * Enables use of multiple files by multiple client objects.
- *
- */
- class CFileSwitcher : public IHXFileSwitcher,
- public IHXFileResponse,
- public IHXThreadSafeMethods,
- public IHXGetFileFromSamePoolResponse,
- public IHXCallback
- {
- public:
- /*
- * Constructor/Destructor
- */
- CFileSwitcher(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);
- /*
- * IHXGetFileFromSamePoolResponse method
- */
- STDMETHOD(FileObjectReady) (THIS_
- HX_RESULT status,
- IUnknown* pUnknown);
- /*
- * IHXThreadSafeMethods method
- */
- STDMETHOD_(UINT32,IsThreadSafe) (THIS);
- /*
- * IHXCallback methods
- */
- STDMETHOD(Func) (THIS);
- private:
- typedef enum
- {
- FSWCHR_Offline,
- FSWCHR_Ready,
- FSWCHR_ProcInit,
- FSWCHR_ProcRead,
- FSWCHR_ProcWrite,
- FSWCHR_ProcSeek,
- FSWCHR_ProcClose,
- FSWCHR_ProcAdvise
- } FileSwitcherState;
- class FileHandle
- {
- public:
- FileHandle(void)
- : m_pFileName(NULL)
- , m_pFileObject(NULL) {;}
- char* m_pFileName;
- IHXFileObject *m_pFileObject;
- void Clear(void)
- {
- HX_VECTOR_DELETE(m_pFileName);
- HX_RELEASE(m_pFileObject);
- }
- const char* SetName(const char* pFileName)
- {
- ULONG32 ulNameSize;
- HX_VECTOR_DELETE(m_pFileName);
- if (pFileName)
- {
- ulNameSize = (ULONG32) (strlen(pFileName) + 1);
- m_pFileName = new char [ulNameSize];
- if (m_pFileName)
- {
- memcpy(m_pFileName, pFileName, ulNameSize); /* Flawfinder: ignore */
- }
- }
- return m_pFileName;
- }
- ~FileHandle()
- {
- HX_VECTOR_DELETE(m_pFileName);
- HX_RELEASE(m_pFileObject);
- }
- };
- inline void Reset(void);
- HX_RESULT HandleFailureAsync(HX_RESULT status);
- HX_RESULT HandleFailureSync(HX_RESULT status);
- HX_RESULT FileHandleReady(void);
- HX_RESULT GetFileHandle(const char* pFileName);
- HX_RESULT CloseFileHandleObject(FileHandle *pFileHandle);
- inline FileHandle* FindFileHandle(const char* pFileName);
- inline FileHandle* SelectStaleHandle(void);
- inline HX_RESULT ProcessRead(void);
- inline HX_RESULT ReadNextFragment(void);
- BOOL m_bSyncMode;
- UINT16 m_uMaxChildCount;
- UINT16 m_uCurrentChildCount;
- UINT16 m_uLastDisownedChild;
- FileHandle* m_pHandleTable;
- ULONG32 m_ulFlags;
- ULONG32 m_ulSize;
- ULONG32 m_ulChunkSize;
- ULONG32 m_ulProcessedSize;
- ULONG32 m_ulFragmentCount;
- BOOL m_bRelative;
- IHXBuffer* m_pBuffer;
- FileHandle* m_pCurrentHandle;
- IHXFileResponse* m_pResponse;
- IHXCommonClassFactory* m_pClassFactory;
- IHXScheduler* m_pScheduler;
- FileSwitcherState m_State;
- BOOL m_bClosing;
- HX_RESULT m_CloseStatus;
- LONG32 m_lRefCount;
- ~CFileSwitcher();
- PRIVATE_DESTRUCTORS_ARE_NOT_A_CRIME
- };
- #else // QTCONFIG_FSWITCHER
- #include "fswtchr_passthrough.h"
- #endif // QTCONFIG_FSWITCHER
- #endif // _FSWTCHR_H_