dunit.cpp
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 ***** */
- #include "hlxclib/memory.h"
- #include "hxresult.h"
- #include "hxacodec.h"
- #include "dunitprvt.h"
- CDecoderUnit::CDecoderUnit()
- : mSize(0)
- , mSamples(0)
- , mpData(0)
- , mDataMaxsize(0)
- , mBufferFullness(0)
- , mFlags((FLAGS)0)
- , m_lRefCount(0)
- {
- }
- CDecoderUnit::~CDecoderUnit()
- {
- if (mpData) delete[] mpData;
- }
- /****************************************************************************
- * IUnknown methods
- */
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::QueryInterface
- //
- STDMETHODIMP CDecoderUnit::QueryInterface(REFIID riid, void** ppvObj)
- {
- if (IsEqualIID(riid, IID_IQueryDecoderUnit))
- {
- AddRef();
- *ppvObj = (IQueryDecoderUnit*) this;
- return HXR_OK;
- }
- else if (IsEqualIID(riid, IID_IPrepareDecoderUnit))
- {
- AddRef();
- *ppvObj = (IPrepareDecoderUnit*) 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) CDecoderUnit::AddRef()
- {
- return InterlockedIncrement(&m_lRefCount);
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::Release
- //
- STDMETHODIMP_(ULONG32) CDecoderUnit::Release()
- {
- if (InterlockedDecrement(&m_lRefCount) > 0)
- {
- return m_lRefCount;
- }
- delete this;
- return 0;
- }
- STDMETHODIMP CDecoderUnit::getData(const char *&data, UINT32& size, UINT32& nSamples) CONSTMETHOD
- {
- data = mpData ;
- size = mSize ;
- nSamples = mSamples ;
- return HXR_OK ;
- }
- STDMETHODIMP CDecoderUnit::putData(const char *data, UINT32 nBytes, UINT32 nSamples)
- {
- if (nBytes > mDataMaxsize)
- {
- if (mpData) delete[] mpData ;
- mpData = new char[mDataMaxsize = 2*nBytes] ;
- if (!mpData) return HXR_OUTOFMEMORY ;
- }
- memcpy(mpData, data, nBytes) ; /* Flawfinder: ignore */
- mSize = nBytes ;
- mSamples = nSamples ;
- return HXR_OK ;
- }
- STDMETHODIMP_(INT32) CDecoderUnit::getBufferFullness() CONSTMETHOD
- {
- return mBufferFullness ;
- }
- STDMETHODIMP CDecoderUnit::setBufferFullness(INT32 bfm)
- {
- mBufferFullness = bfm ;
- return HXR_OK ;
- }
- STDMETHODIMP_(CDecoderUnit::FLAGS) CDecoderUnit::getFlags(void) const
- {
- return mFlags ;
- }
- STDMETHODIMP CDecoderUnit::setFlags(FLAGS f)
- {
- mFlags = f ;
- return HXR_OK ;
- }