bfrag.cpp
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 ***** */
- /****************************************************************************
- * Includes
- */
- #ifdef QTCONFIG_BFRAG_FACTORY
- #include "bfragfct.h"
- #endif // QTCONFIG_BFRAG_FACTORY
- #include "bfrag.h"
- #include "hxassert.h"
- /****************************************************************************
- * Globals
- */
- /****************************************************************************
- * Local Defines
- */
- /****************************************************************************
- * Class CBufferFragment
- */
- /****************************************************************************
- * Destructor
- */
- CBufferFragment::~CBufferFragment()
- {
- #ifdef QTCONFIG_BFRAG_FACTORY
- HX_RELEASE(m_pBuffer);
- HX_RELEASE(m_pBufferFragmentFactory);
- #else // QTCONFIG_BFRAG_FACTORY
- m_pBuffer->Release();
- #endif // QTCONFIG_BFRAG_FACTORY
-
- }
- /****************************************************************************
- * Public methods
- */
- #ifdef QTCONFIG_BFRAG_FACTORY
- void CBufferFragment::Link(CBufferFragmentFactory* pBufferFragmentFactory)
- {
- if (m_pBufferFragmentFactory)
- {
- m_pBufferFragmentFactory->Release();
- }
- m_pBufferFragmentFactory = pBufferFragmentFactory;
- if (pBufferFragmentFactory)
- {
- pBufferFragmentFactory->AddRef();
- }
- }
- void CBufferFragment::Unlink(void)
- {
- HX_RELEASE(m_pBufferFragmentFactory);
- }
- #endif // QTCONFIG_BFRAG_FACTORY
- /****************************************************************************
- * IHXBuffer methods
- */
- /****************************************************************************
- * Get
- */
- STDMETHODIMP CBufferFragment::Get(REF(UCHAR*) pData,
- REF(ULONG32) ulLength)
- {
- pData = m_pData;
- ulLength = m_ulSize;
- return HXR_OK;
- }
- /****************************************************************************
- * Set
- */
- STDMETHODIMP CBufferFragment::Set(const UCHAR* pData,
- ULONG32 ulLength)
- {
- HX_ASSERT(FALSE);
- return HXR_FAIL;
- }
- /****************************************************************************
- * SetSize
- */
- STDMETHODIMP CBufferFragment::SetSize(ULONG32 ulLength)
- {
- if (m_pBuffer)
- {
- if (m_pData - m_pBuffer->GetBuffer() + ulLength <= m_ulSize)
- {
- m_ulSize = ulLength;
- return HXR_OK;
- }
- }
- HX_ASSERT(FALSE);
- return HXR_FAIL;
- }
- /****************************************************************************
- * GetSize
- */
- STDMETHODIMP_(ULONG32) CBufferFragment::GetSize()
- {
- return m_ulSize;
- }
- /****************************************************************************
- * GetBuffer
- */
- STDMETHODIMP_(UCHAR*) CBufferFragment::GetBuffer()
- {
- return m_pData;
- }
- /****************************************************************************
- * IUnknown methods
- */
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::QueryInterface
- //
- STDMETHODIMP CBufferFragment::QueryInterface(REFIID riid, void** ppvObj)
- {
- if (IsEqualIID(riid, IID_IHXBuffer))
- {
- AddRef();
- *ppvObj = (IHXBuffer*) this;
- return HXR_OK;
- }
- else if (IsEqualIID(riid, IID_IUnknown))
- {
- AddRef();
- *ppvObj = this;
- return HXR_OK;
- }
- *ppvObj = NULL;
- return HXR_NOINTERFACE;
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::AddRef
- //
- STDMETHODIMP_(ULONG32) CBufferFragment::AddRef()
- {
- return InterlockedIncrement(&m_lRefCount);
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::Release
- //
- STDMETHODIMP_(ULONG32) CBufferFragment::Release()
- {
- if (InterlockedDecrement(&m_lRefCount) > 0)
- {
- return m_lRefCount;
- }
- #ifdef QTCONFIG_BFRAG_FACTORY
- if (m_pBufferFragmentFactory)
- {
- HX_RELEASE(m_pBuffer);
- m_pBufferFragmentFactory->Put(this);
- m_pBufferFragmentFactory->Release();
- m_pBufferFragmentFactory = NULL;
- }
-
- if (m_lRefCount == 0)
- #endif // QTCONFIG_BFRAG_FACTORY
- {
- delete this;
- }
- return 0;
- }