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/****************************************************************************
**
** 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef MFGLOBAL_H
#define MFGLOBAL_H
#include <mfapi.h>
#include <mfidl.h>
#include <Mferror.h>
template<class T>
class AsyncCallback : public IMFAsyncCallback
{
public:
typedef HRESULT (T::*InvokeFn)(IMFAsyncResult *asyncResult);
AsyncCallback(T *parent, InvokeFn fn) : m_parent(parent), m_invokeFn(fn)
{
}
// IUnknown
STDMETHODIMP QueryInterface(REFIID iid, void** ppv)
{
if (!ppv)
return E_POINTER;
if (iid == __uuidof(IUnknown)) {
*ppv = static_cast<IUnknown*>(static_cast<IMFAsyncCallback*>(this));
} else if (iid == __uuidof(IMFAsyncCallback)) {
*ppv = static_cast<IMFAsyncCallback*>(this);
} else {
*ppv = NULL;
return E_NOINTERFACE;
}
AddRef();
return S_OK;
}
STDMETHODIMP_(ULONG) AddRef() {
// Delegate to parent class.
return m_parent->AddRef();
}
STDMETHODIMP_(ULONG) Release() {
// Delegate to parent class.
return m_parent->Release();
}
// IMFAsyncCallback methods
STDMETHODIMP GetParameters(DWORD*, DWORD*)
{
// Implementation of this method is optional.
return E_NOTIMPL;
}
STDMETHODIMP Invoke(IMFAsyncResult* asyncResult)
{
return (m_parent->*m_invokeFn)(asyncResult);
}
T *m_parent;
InvokeFn m_invokeFn;
};
template <class T> void qt_wmf_safeRelease(T **ppT)
{
if (*ppT) {
(*ppT)->Release();
*ppT = NULL;
}
}
template <class T>
void qt_wmf_copyComPointer(T* &dest, T *src)
{
if (dest)
dest->Release();
dest = src;
if (dest)
dest->AddRef();
}
HRESULT qt_wmf_getFourCC(IMFMediaType *type, DWORD *fourCC);
MFRatio qt_wmf_getPixelAspectRatio(IMFMediaType *type);
bool qt_wmf_areMediaTypesEqual(IMFMediaType *type1, IMFMediaType *type2);
HRESULT qt_wmf_validateVideoArea(const MFVideoArea& area, UINT32 width, UINT32 height);
bool qt_wmf_isSampleTimePassed(IMFClock *clock, IMFSample *sample);
inline float qt_wmf_MFOffsetToFloat(const MFOffset& offset)
{
return offset.value + (float(offset.fract) / 65536);
}
inline MFOffset qt_wmf_makeMFOffset(float v)
{
MFOffset offset;
offset.value = short(v);
offset.fract = WORD(65536 * (v-offset.value));
return offset;
}
inline MFVideoArea qt_wmf_makeMFArea(float x, float y, DWORD width, DWORD height)
{
MFVideoArea area;
area.OffsetX = qt_wmf_makeMFOffset(x);
area.OffsetY = qt_wmf_makeMFOffset(y);
area.Area.cx = width;
area.Area.cy = height;
return area;
}
inline HRESULT qt_wmf_getFrameRate(IMFMediaType *pType, MFRatio *pRatio)
{
return MFGetAttributeRatio(pType, MF_MT_FRAME_RATE, (UINT32*)&pRatio->Numerator, (UINT32*)&pRatio->Denominator);
}
#endif // MFGLOBAL_H
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