Re: [PATCH v3 0/3] MR725: evr/filter: Implement media type testing for QueryAccept().

[Nikolay Sivov (＠nsivov)]

On Mon Aug 29 20:13:37 2022 +0000, **** wrote:
> Zebediah Figura replied on the mailing list:
> On 8/29/22 09:39, Nikolay Sivov wrote:
> > @@ -296,6 +299,15 @@ static void test_interfaces(void)
> >       check_interface(filter, &IID_IReferenceClock, FALSE);
> >       check_interface(filter, &IID_IVideoWindow, FALSE);
> >   
> > +    /* The scope of IMediaEventSink */
> > +    hr = IBaseFilter_QueryInterface(filter, &IID_IMediaEventSink,
> (void **)&unk);
> > +    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
> > +    hr = IUnknown_QueryInterface(unk, &IID_IBaseFilter, (void **)&filter2);
> > +    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
> > +    ok(filter == filter2, "Unexpected pointer.\n");
> > +    IBaseFilter_Release(filter2);
> > +    IUnknown_Release(unk);
> > +
> >       ref = IBaseFilter_Release(filter);
> >       ok(!ref, "Got unexpected refcount %ld.\n", ref);
> >   }
> Somewhat out of curiosity, why this test?

It's done differently in mf/evr.c where this interface is not exposed, except during InitServices(). The test was to show that it's done in a usual way in this case.