/****************************************************************************
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** Foundation and appearing in the file LICENSE.LGPL included in the
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****************************************************************************/

#ifndef DIRECTSHOWGLOBAL_H
#define DIRECTSHOWGLOBAL_H

#include <dshow.h>


QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

template <typename T> T *com_cast(IUnknown *unknown)
{
    T *iface = 0;
    return unknown && unknown->QueryInterface(
            __uuidof(T), reinterpret_cast<void **>(&iface)) == S_OK
        ? iface
        : 0;
}

template <typename T> T *com_new(const IID &clsid)
{
    T *object = 0;
    return CoCreateInstance(
            clsid,
            NULL,
            CLSCTX_INPROC_SERVER,
            __uuidof(T),
            reinterpret_cast<void **>(&object)) == S_OK
        ? object
        : 0;
}

QT_END_NAMESPACE

QT_END_HEADER

#endif