hxaudvol.cpp
上传用户:dangjiwu
上传日期:2013-07-19
资源大小:42019k
文件大小:8k
- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: hxaudvol.cpp,v 1.6.20.1 2004/07/09 02:08:08 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 "hlxclib/stdio.h"
- #include "hlxclib/string.h"
- #include "hxresult.h"
- #include "hxtypes.h"
- #include "hxcom.h"
- #include "hxausvc.h"
- #include "hxaudvol.h"
- #include "hxslist.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- /************************************************************************
- * Method:
- * IHXVolume::CHXVolume()
- * Purpose:
- * Constructor. Clean up and set free.
- */
- CHXVolume::CHXVolume()
- : m_uVolume(HX_INIT_VOLUME)
- , m_lRefCount(0)
- , m_bMute(FALSE)
- , m_pSinkList(0)
- {
- Init();
- }
- /************************************************************************
- * Method:
- * IHXVolume::~CHXVolume()
- * Purpose:
- * Destructor. Clean up and set free.
- */
- CHXVolume::~CHXVolume()
- {
- /* Delete items in lists */
- if ( m_pSinkList )
- {
- IHXVolumeAdviseSink* s = 0;
- CHXSimpleList::Iterator lIter = m_pSinkList->Begin();
- for (; lIter != m_pSinkList->End(); ++lIter)
- {
- s = (IHXVolumeAdviseSink*) (*lIter);
- if ( s )
- {
- s->Release();
- s = 0;
- }
- }
- delete m_pSinkList;
- m_pSinkList = 0;
- }
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::QueryInterface
- // Purpose:
- // Implement this to export the interfaces supported by your
- // object.
- //
- STDMETHODIMP CHXVolume::QueryInterface(REFIID riid, void** ppvObj)
- {
- QInterfaceList qiList[] =
- {
- { GET_IIDHANDLE(IID_IHXVolume), (IHXVolume*)this },
- { GET_IIDHANDLE(IID_IUnknown), (IUnknown*)(IHXVolume*)this },
- };
-
- return ::QIFind(qiList, QILISTSIZE(qiList), riid, ppvObj);
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::AddRef
- // Purpose:
- // Everyone usually implements this the same... feel free to use
- // this implementation.
- //
- STDMETHODIMP_(ULONG32) CHXVolume::AddRef()
- {
- return InterlockedIncrement(&m_lRefCount);
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::Release
- // Purpose:
- // Everyone usually implements this the same... feel free to use
- // this implementation.
- //
- STDMETHODIMP_(ULONG32) CHXVolume::Release()
- {
- if (InterlockedDecrement(&m_lRefCount) > 0)
- {
- return m_lRefCount;
- }
- delete this;
- return 0;
- }
- /*
- * IHXVolume methods
- */
- /************************************************************************
- * Method:
- * IHXVolume::Init
- * Purpose:
- *
- */
- STDMETHODIMP CHXVolume::Init()
- {
- HX_RESULT theErr = HXR_OK;
- /* create sink lists. */
- m_pSinkList = new CHXSimpleList;
- if ( !m_pSinkList )
- theErr = HXR_OUTOFMEMORY;
- if ( !theErr )
- {
- if(!m_pSinkList->IsPtrListValid())
- theErr = HXR_OUTOFMEMORY;
- }
- if ( !theErr )
- return HXR_OK;
- else
- return HXR_FAILED;
- }
- /************************************************************************
- * Method:
- * IHXVolume::SetVolume
- * Purpose:
- *
- */
- STDMETHODIMP CHXVolume::SetVolume
- (
- const UINT16 uVolume
- )
- {
- m_uVolume = uVolume;
- /* Call all advise sinks in list. */
- if ( m_pSinkList )
- {
- IHXVolumeAdviseSink* s = 0;
- CHXSimpleList::Iterator lIter = m_pSinkList->Begin();
- for (; lIter != m_pSinkList->End(); ++lIter)
- {
- s = (IHXVolumeAdviseSink*) (*lIter);
- if ( s )
- s->OnVolumeChange(uVolume);
- }
- }
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * IHXVolume::GetVolume
- * Purpose:
- *
- */
- STDMETHODIMP_(UINT16) CHXVolume::GetVolume()
- {
- return m_uVolume;
- }
- /************************************************************************
- * Method:
- * IHXVolume::SetMute
- * Purpose:
- *
- */
- STDMETHODIMP CHXVolume::SetMute
- (
- const BOOL bMute
- )
- {
- m_bMute = bMute;
- /* Call all advise sinks in list. */
- if ( m_pSinkList )
- {
- IHXVolumeAdviseSink* s = 0;
- CHXSimpleList::Iterator lIter = m_pSinkList->Begin();
- for (; lIter != m_pSinkList->End(); ++lIter)
- {
- s = (IHXVolumeAdviseSink*) (*lIter);
- if ( s )
- s->OnMuteChange(bMute);
- }
- }
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * IHXVolume::GetMute
- * Purpose:
- *
- */
- STDMETHODIMP_(BOOL) CHXVolume::GetMute()
- {
- return m_bMute;
- }
- /************************************************************************
- * Method:
- * IHXVolume::AddAdviseSink
- * Purpose:
- *
- */
- STDMETHODIMP CHXVolume::AddAdviseSink
- (
- IHXVolumeAdviseSink* pSink
- )
- {
- if (!pSink || !m_pSinkList)
- {
- return HXR_FAILED;
- }
- /* Check if this one already exists */
- LISTPOSITION lPos = m_pSinkList->Find(pSink);
- if (lPos)
- {
- return HXR_FAILED;
- }
- pSink->AddRef();
- m_pSinkList->AddTail((void*) pSink);
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * IHXVolume::RemoveAdviseSink
- * Purpose:
- *
- */
- STDMETHODIMP CHXVolume::RemoveAdviseSink
- (
- IHXVolumeAdviseSink* pSink
- )
- {
- if (!pSink || !m_pSinkList)
- {
- return HXR_FAILED;
- }
- LISTPOSITION lpos = m_pSinkList->Find(pSink);
- if (lpos)
- {
- m_pSinkList->RemoveAt(lpos);
- pSink->Release();
- return HXR_OK;
- }
-
- return HXR_FAILED;
- }