qt-everywhere-src-5.14.1/qtmultimedia/src/plugins/directshow/common/directshowglobal.h

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#ifndef DIRECTSHOWGLOBAL_H
#define DIRECTSHOWGLOBAL_H

#include <dshow.h>

#include <QtCore/qglobal.h>
#include <QtCore/qloggingcategory.h>

QT_BEGIN_NAMESPACE

Q_DECLARE_LOGGING_CATEGORY(qtDirectShowPlugin)

QT_END_NAMESPACE

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

template <typename T> T *com_new(const IID &clsid)
{
    T *object = nullptr;
    return CoCreateInstance(
            clsid,
            nullptr,
            CLSCTX_INPROC_SERVER,
            IID_PPV_ARGS(&object)) == S_OK
        ? object
        : nullptr;
}

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

DEFINE_GUID(MEDIASUBTYPE_I420,
        0x30323449,0x0000,0x0010,0x80,0x00,0x00,0xAA,0x00,0x38,0x9B,0x71);

#ifndef __IFilterGraph2_INTERFACE_DEFINED__
#define __IFilterGraph2_INTERFACE_DEFINED__
#define INTERFACE IFilterGraph2
DECLARE_INTERFACE_(IFilterGraph2 ,IGraphBuilder)
{
    STDMETHOD(AddSourceFilterForMoniker)(THIS_ IMoniker *, IBindCtx *, LPCWSTR,IBaseFilter **) PURE;
    STDMETHOD(ReconnectEx)(THIS_ IPin *, const AM_MEDIA_TYPE *) PURE;
    STDMETHOD(RenderEx)(IPin *, DWORD, DWORD *) PURE;
};
#undef INTERFACE
#endif

#ifndef __IAMFilterMiscFlags_INTERFACE_DEFINED__
#define __IAMFilterMiscFlags_INTERFACE_DEFINED__
#define INTERFACE IAMFilterMiscFlags
DECLARE_INTERFACE_(IAMFilterMiscFlags ,IUnknown)
{
    STDMETHOD(QueryInterface)(THIS_ REFIID,PVOID*) PURE;
    STDMETHOD_(ULONG,AddRef)(THIS) PURE;
    STDMETHOD_(ULONG,Release)(THIS) PURE;
    STDMETHOD_(ULONG,GetMiscFlags)(THIS) PURE;
};
#undef INTERFACE
#endif

#ifndef __IFileSourceFilter_INTERFACE_DEFINED__
#define __IFileSourceFilter_INTERFACE_DEFINED__
#define INTERFACE IFileSourceFilter
DECLARE_INTERFACE_(IFileSourceFilter ,IUnknown)
{
    STDMETHOD(QueryInterface)(THIS_ REFIID,PVOID*) PURE;
    STDMETHOD_(ULONG,AddRef)(THIS) PURE;
    STDMETHOD_(ULONG,Release)(THIS) PURE;
    STDMETHOD(Load)(THIS_ LPCOLESTR, const AM_MEDIA_TYPE *) PURE;
    STDMETHOD(GetCurFile)(THIS_ LPOLESTR *ppszFileName, AM_MEDIA_TYPE *) PURE;
};
#undef INTERFACE
#endif

#ifndef __IAMOpenProgress_INTERFACE_DEFINED__
#define __IAMOpenProgress_INTERFACE_DEFINED__
#undef INTERFACE
#define INTERFACE IAMOpenProgress
DECLARE_INTERFACE_(IAMOpenProgress ,IUnknown)
{
    STDMETHOD(QueryInterface)(THIS_ REFIID,PVOID*) PURE;
    STDMETHOD_(ULONG,AddRef)(THIS) PURE;
    STDMETHOD_(ULONG,Release)(THIS) PURE;
    STDMETHOD(QueryProgress)(THIS_ LONGLONG *, LONGLONG *) PURE;
    STDMETHOD(AbortOperation)(THIS) PURE;
};
#undef INTERFACE
#endif

#ifndef __IFilterChain_INTERFACE_DEFINED__
#define __IFilterChain_INTERFACE_DEFINED__
#define INTERFACE IFilterChain
DECLARE_INTERFACE_(IFilterChain ,IUnknown)
{
    STDMETHOD(QueryInterface)(THIS_ REFIID,PVOID*) PURE;
    STDMETHOD_(ULONG,AddRef)(THIS) PURE;
    STDMETHOD_(ULONG,Release)(THIS) PURE;
    STDMETHOD(StartChain)(IBaseFilter *, IBaseFilter *) PURE;
    STDMETHOD(PauseChain)(IBaseFilter *, IBaseFilter *) PURE;
    STDMETHOD(StopChain)(IBaseFilter *, IBaseFilter *) PURE;
    STDMETHOD(RemoveChain)(IBaseFilter *, IBaseFilter *) PURE;
};
#undef INTERFACE
#endif

#endif