diff options
Diffstat (limited to 'src/plugins/wmf/mfactivate.cpp')
-rw-r--r-- | src/plugins/wmf/mfactivate.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/plugins/wmf/mfactivate.cpp b/src/plugins/wmf/mfactivate.cpp new file mode 100644 index 000000000..cf64adc80 --- /dev/null +++ b/src/plugins/wmf/mfactivate.cpp @@ -0,0 +1,89 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "mfactivate.h" + +#include <mfapi.h> + +MFAbstractActivate::MFAbstractActivate() + : m_attributes(0) + , m_cRef(1) +{ + MFCreateAttributes(&m_attributes, 0); +} + +MFAbstractActivate::~MFAbstractActivate() +{ + if (m_attributes) + m_attributes->Release(); +} + + +HRESULT MFAbstractActivate::QueryInterface(REFIID riid, LPVOID *ppvObject) +{ + if (!ppvObject) + return E_POINTER; + if (riid == IID_IMFActivate) { + *ppvObject = static_cast<IMFActivate*>(this); + } else if (riid == IID_IMFAttributes) { + *ppvObject = static_cast<IMFAttributes*>(this); + } else if (riid == IID_IUnknown) { + *ppvObject = static_cast<IUnknown*>(static_cast<IMFActivate*>(this)); + } else { + *ppvObject = NULL; + return E_NOINTERFACE; + } + AddRef(); + return S_OK; +} + +ULONG MFAbstractActivate::AddRef(void) +{ + return InterlockedIncrement(&m_cRef); +} + +ULONG MFAbstractActivate::Release(void) +{ + ULONG cRef = InterlockedDecrement(&m_cRef); + if (cRef == 0) + delete this; + return m_cRef; +} |