atomizer.h
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上传日期:2013-07-19
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- /* ***** 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 _ATOMIZER_H_
- #define _ATOMIZER_H_
- /****************************************************************************
- * Defines
- */
- #define ATOMIZE_ALL 0
- #ifdef QTCONFIG_SPEED_OVER_SIZE
- #define QTATOMIZER_INLINE inline
- #else // QTCONFIG_SPEED_OVER_SIZE
- #define QTATOMIZER_INLINE /**/
- #endif // QTCONFIG_SPEED_OVER_SIZE
- /****************************************************************************
- * Includes
- */
- #include "hxatmzr.h"
- #include "hxfiles.h"
- #include "hxengin.h"
- #include "fswtchr.h"
- /****************************************************************************
- *
- * Class:
- * CAtomizer
- *
- * Purpose:
- * Loads QT atoms into the atom tree from a file.
- *
- */
- class CAtomizer : public IHXFileResponse,
- public IHXThreadSafeMethods,
- public IHXAtomizationCommander
- {
- public:
- /*
- * Constructor
- */
- CAtomizer(void);
- /*
- * Main Interface
- */
- HX_RESULT Init(IUnknown* pSource,
- IUnknown* pResponse,
- IUnknown* pCommander = NULL);
- void Close(void);
- HX_RESULT Atomize( ULONG32 ulOffset = 0,
- ULONG32 ulSize = ATOMIZE_ALL);
- /*
- * IUnknown methods
- */
- STDMETHOD (QueryInterface ) (THIS_
- REFIID ID,
- void** ppInterfaceObj);
- STDMETHOD_(UINT32, AddRef ) (THIS);
- STDMETHOD_(UINT32, Release) (THIS);
- /*
- * IHXFileResponse methods
- */
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IHXFileResponse::InitDone
- // Purpose:
- // Notification interface provided by users of the IHXFileObject
- // interface. This method is called by the IHXFileObject when the
- // initialization of the file is complete, and the Mime type is
- // available for the request file. If the URL is not valid for the
- // file system, the status HXR_FAILED should be returned,
- // with a mime type of NULL. If the URL is valid but the mime type
- // is unknown, then the status HXR_OK should be returned with
- // a mime type of NULL.
- //
- STDMETHOD(InitDone) (THIS_
- HX_RESULT status)
- {
- HX_ASSERT(HXR_NOTIMPL == HXR_OK);
- return HXR_NOTIMPL;
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IHXFileResponse::CloseDone
- // Purpose:
- // Notification interface provided by users of the IHXFileObject
- // interface. This method is called by the IHXFileObject when the
- // close of the file is complete.
- //
- STDMETHOD(CloseDone) (THIS_
- HX_RESULT status)
- {
- HX_ASSERT(HXR_NOTIMPL == HXR_OK);
- return HXR_NOTIMPL;
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IHXFileResponse::ReadDone
- // Purpose:
- // Notification interface provided by users of the IHXFileObject
- // interface. This method is called by the IHXFileObject when the
- // last read from the file is complete and a buffer is available.
- //
- STDMETHOD(ReadDone) (THIS_
- HX_RESULT status,
- IHXBuffer* pBuffer);
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IHXFileResponse::WriteDone
- // Purpose:
- // Notification interface provided by users of the IHXFileObject
- // interface. This method is called by the IHXFileObject when the
- // last write to the file is complete.
- //
- STDMETHOD(WriteDone) (THIS_
- HX_RESULT status)
- {
- HX_ASSERT(HXR_NOTIMPL == HXR_OK);
- return HXR_NOTIMPL;
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IHXFileResponse::SeekDone
- // Purpose:
- // Notification interface provided by users of the IHXFileObject
- // interface. This method is called by the IHXFileObject when the
- // last seek in the file is complete.
- //
- STDMETHOD(SeekDone) (THIS_
- HX_RESULT status);
- /************************************************************************
- * Method:
- * IHXFileResponse::FileObjectReady
- * Purpose:
- * Notification interface provided by users of the IHXFileObject
- * interface. This method is called by the IHXFileObject when the
- * requested FileObject is ready. It may return NULL with
- * HX_RESULT_FAIL if the requested filename did not exist in the
- * same pool.
- */
- STDMETHOD(FileObjectReady) (THIS_
- HX_RESULT status,
- IHXFileObject* pFileObject)
- {
- HX_ASSERT(HXR_NOTIMPL == HXR_OK);
- return HXR_NOTIMPL;
- }
- /*
- * IHXAtomizationCommander methods
- */
- STDMETHOD_(QTAtomizerCmd,GetAtomCommand) (THIS_
- QTAtomType AtomType,
- CQTAtom *pParent)
- {
- return ATMZR_CMD_LOAD;
- }
- ///////////////////////////////////////////////////////////////////////////
- // Method:
- // IHXThreadSafeMethods::IsThreadSafe
- // Purpose:
- // This routine returns threadsafeness information about the file object
- // which is used by the server for improved performance.
- //
- STDMETHOD_(UINT32,IsThreadSafe) (THIS);
- private:
- typedef enum
- {
- ATMZR_Offline,
- ATMZR_Ready,
- ATMZR_ProcHeader,
- ATMZR_ProcNewHeader,
- ATMZR_ProcExtendedSize,
- ATMZR_MakeAtom,
- ATMZR_ProcBody
- } AtomizerState;
- typedef enum
- {
- ATMZR_CBSTEP_Read,
- ATMZR_CBSTEP_Seek
- } CallbackStep;
- class CRecursionCallback : public IHXCallback
- {
- public:
- CRecursionCallback(CAtomizer *pAtomizer);
- ~CRecursionCallback();
- /*
- * IHXCallback methods
- */
- STDMETHOD(Func) (THIS);
-
- /*
- * IUnknown methods
- */
- STDMETHOD(QueryInterface) (THIS_ REFIID riid, void** ppvObj);
- STDMETHOD_(ULONG32,AddRef) (THIS);
- STDMETHOD_(ULONG32,Release) (THIS);
- private:
- INT32 m_lRefCount;
- CAtomizer* m_pAtomizer;
- };
- HX_RESULT ReadData(ULONG32 ulSize);
- HX_RESULT SeekData(ULONG32 ulOffset, BOOL bRelative = FALSE);
- inline HX_RESULT ReadDataCB(ULONG32 ulSize);
- inline HX_RESULT SeekDataCB(ULONG32 ulOffset, BOOL bRelative = FALSE);
- BOOL IsOffsetInRange(ULONG32 ulOffset)
- {
- return (m_ulFinalOffset == ATOMIZE_ALL) ||
- (ulOffset < m_ulFinalOffset);
- }
- QTATOMIZER_INLINE HX_RESULT AdjustCurrentRoot(void);
- void CompleteAtomization(HX_RESULT status);
- AtomizerState m_State;
- IHXFileSwitcher *m_pFileSwitcher;
- IHXAtomizerResponse *m_pResponse;
- IHXAtomizationCommander *m_pCommander;
- IHXScheduler *m_pScheduler;
- BOOL m_bSyncAccessEnabled;
- BOOL m_bPreferLinearAccess;
- CQTAtom *m_pRoot;
- CQTAtom *m_pCurrentRoot;
- CQTAtom *m_pNewAtom;
- ULONG32 m_ulStartOffset;
- ULONG32 m_ulFinalOffset;
- ULONG32 m_ulCurrentOffset;
- ULONG32 m_ulNewAtomOffset;
- ULONG32 m_ulNewAtomDataSize;
- QTAtomType m_AtomType;
- ULONG32 m_ulTotalSize;
- CRecursionCallback *m_pRecursionCallback;
- ULONG32 m_ulRecursionCount;
- CallbackStep m_CallbackStep;
- ULONG32 m_ulSize;
- BOOL m_bRelative;
- LONG32 m_lRefCount;
- friend class CRecursionCallback;
- ~CAtomizer();
- PRIVATE_DESTRUCTORS_ARE_NOT_A_CRIME
- };
- #endif // _ATOMIZER_H_