DECLARE_INTERFACE_(IAudioClient, IUnknown) {
    STDMETHOD(Initialize)(
        THIS_
        AUDCLNT_SHAREMODE shareMode,
        DWORD streamFlags,
        REFERENCE_TIME hnsBufferDuration,
        REFERENCE_TIME hnsPeriodicity,
        const WAVEFORMATEX *pFormat,
        LPCGUID audioSessionGuid
    ) PURE;

    STDMETHOD(GetBufferSize)(
        THIS_
        UINT32 *pNumBufferFrames
    ) PURE;

    STDMETHOD(GetStreamLatency)(
        THIS_
        REFERENCE_TIME *phnsLatency
    ) PURE;

    STDMETHOD(GetCurrentPadding)(
        THIS_
        UINT32 *pNumPaddingFrames
    ) PURE;

    STDMETHOD(IsFormatSupported)(
        THIS_
        AUDCLNT_SHAREMODE shareMode,
        const WAVEFORMATEX *pFormat,
        WAVEFORMATEX **ppClosestMatch
    ) PURE;

    STDMETHOD(GetMixFormat)(
        THIS_
        WAVEFORMATEX **ppDeviceFormat
    ) PURE;

    STDMETHOD(GetDevicePeriod)(
        THIS_
        REFERENCE_TIME *phnsDefaultDevicePeriod,
        REFERENCE_TIME *phnsMinimumDevicePeriod
    ) PURE;

    STDMETHOD(Start)(
        THIS
    ) PURE;

    STDMETHOD(Stop)(
        THIS
    ) PURE;

    STDMETHOD(Reset)(
        THIS
    ) PURE;

    STDMETHOD(SetEventHandle)(
        THIS_
        HANDLE eventHandle
    ) PURE;

    STDMETHOD(GetService)(
        THIS_
        REFIID riid,
        void **ppv
    ) PURE;
};