nestbuff.cpp
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: nestbuff.cpp,v 1.4.20.3 2004/07/09 01:45:59 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 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 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (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.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * 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 ***** */
- // include
- #include "hxtypes.h"
- #include "hxcom.h"
- #include "ihxpckts.h"
- // pnmisc
- #include "baseobj.h"
- // pxcomlib
- #include "nestbuff.h"
- // pndebug
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- CHXNestedBuffer::CHXNestedBuffer()
- {
- m_lRefCount = 0;
- m_pBuffer = NULL;
- m_ulOffset = 0;
- m_ulSize = 0;
- }
- CHXNestedBuffer::~CHXNestedBuffer()
- {
- HX_RELEASE(m_pBuffer);
- }
- STDMETHODIMP CHXNestedBuffer::QueryInterface(REFIID riid, void** ppvObj)
- {
- QInterfaceList qiList[] =
- {
- { GET_IIDHANDLE(IID_IUnknown), this },
- { GET_IIDHANDLE(IID_IHXBuffer), (IHXBuffer*) this },
- };
- return QIFind(qiList, QILISTSIZE(qiList), riid, ppvObj);
- }
- STDMETHODIMP_(UINT32) CHXNestedBuffer::AddRef()
- {
- return InterlockedIncrement(&m_lRefCount);
- }
- STDMETHODIMP_(UINT32) CHXNestedBuffer::Release()
- {
-
- if (InterlockedDecrement(&m_lRefCount) > 0)
- {
- return m_lRefCount;
- }
- delete this;
- return 0;
- }
- STDMETHODIMP CHXNestedBuffer::Get(REF(UCHAR*) pData, REF(ULONG32) ulLength)
- {
- HX_RESULT retVal = HXR_FAIL;
- if (m_pBuffer)
- {
- pData = m_pBuffer->GetBuffer() + m_ulOffset;
- ulLength = m_ulSize;
- retVal = HXR_OK;
- }
- return retVal;
- }
- STDMETHODIMP CHXNestedBuffer::Set(const UCHAR* pData, ULONG32 ulLength)
- {
- HX_RESULT retVal = HXR_FAIL;
- if (m_pBuffer && pData && ulLength &&
- m_ulOffset + ulLength <= m_pBuffer->GetSize())
- {
- // Copy the data
- memcpy(m_pBuffer->GetBuffer() + m_ulOffset, /* Flawfinder: ignore */
- pData,
- ulLength);
- // Set the size
- m_ulSize = ulLength;
- // Clear the return value
- retVal = HXR_OK;
- }
- return retVal;
- }
- STDMETHODIMP CHXNestedBuffer::SetSize(ULONG32 ulLength)
- {
- HX_RESULT retVal = HXR_FAIL;
- if (m_pBuffer && ulLength &&
- m_ulOffset + ulLength <= m_pBuffer->GetSize())
- {
- m_ulSize = ulLength;
- retVal = HXR_OK;
- }
- return retVal;
- }
- STDMETHODIMP_(ULONG32) CHXNestedBuffer::GetSize()
- {
- return m_ulSize;
- }
- STDMETHODIMP_(UCHAR*) CHXNestedBuffer::GetBuffer()
- {
- UCHAR* pRet = NULL;
- if (m_pBuffer)
- {
- pRet = m_pBuffer->GetBuffer() + m_ulOffset;
- }
- return pRet;
- }
- STDMETHODIMP CHXNestedBuffer::Init(IHXBuffer* pBuffer, UINT32 ulOffset, UINT32 ulSize)
- {
- HX_RESULT retVal = HXR_FAIL;
- if (pBuffer && ulSize)
- {
- if (ulOffset + ulSize <= pBuffer->GetSize())
- {
- // Init the members
- HX_RELEASE(m_pBuffer);
- m_pBuffer = pBuffer;
- m_pBuffer->AddRef();
- m_ulOffset = ulOffset;
- m_ulSize = ulSize;
- // Clear the return value
- retVal = HXR_OK;
- }
- }
- return retVal;
- }
- HX_RESULT CHXNestedBuffer::CreateObject(CHXNestedBuffer** ppObj)
- {
- HX_RESULT retVal = HXR_FAIL;
- if (ppObj)
- {
- CHXNestedBuffer* pObj = new CHXNestedBuffer();
- if (pObj)
- {
- *ppObj = pObj;
- retVal = HXR_OK;
- }
- }
- return retVal;
- }
- HX_RESULT CHXNestedBuffer::CreateNestedBuffer(IHXBuffer* pBuffer, UINT32 ulOffset,
- UINT32 ulSize, REF(IHXBuffer*) rpNestedBuffer)
- {
- HX_RESULT retVal = HXR_FAIL;
- if (pBuffer && ulSize && ulOffset + ulSize <= pBuffer->GetSize())
- {
- CHXNestedBuffer* pNest = new CHXNestedBuffer();
- if (pNest)
- {
- // AddRef the object
- pNest->AddRef();
- // Init the object
- retVal = pNest->Init(pBuffer, ulOffset, ulSize);
- if (SUCCEEDED(retVal))
- {
- HX_RELEASE(rpNestedBuffer);
- retVal = pNest->QueryInterface(IID_IHXBuffer, (void**) &rpNestedBuffer);
- }
- }
- HX_RELEASE(pNest);
- }
- return retVal;
- }