Re: [PATCH 0/5] MR7715: Implement dynamic formats in directdraw media stream.

[Anton Baskanov (＠baskanov)]

Anton Baskanov (@baskanov) commented about dlls/amstream/tests/amstream.c:
> - ok(hr == S_OK, "Got hr %#lx.\n", hr);
> -
> - source.preferred_mt = NULL;
> - source.query_accept_hr = S_OK;
> -
> - hr = IDirectDrawMediaStream_SetFormat(ddraw_stream, &rgb555_format, NULL);
> - ok(hr == S_OK, "Got hr %#lx.\n", hr);
> - ok(IsEqualGUID(&source.source.pin.mt.subtype, &MEDIASUBTYPE_RGB8),
> -
>        "Got subtype %s.\n", wine_dbgstr_guid(&source.source.pin.mt.subtype));
> - hr = IDirectDrawMediaStream_GetFormat(ddraw_stream, &current_format, NULL, &desired_format, NULL);
> - todo_wine ok(hr == S_OK, "Got hr %#lx.\n", hr);
> - todo_wine ok(current_format.ddpfPixelFormat.u1.dwRGBBitCount == 16,
> -
>        "Got rgb bit count %lu.\n", current_format.ddpfPixelFormat.u1.dwRGBBitCount);
> - todo_wine ok(desired_format.ddpfPixelFormat.u1.dwRGBBitCount == 16,
> -
>        "Got rgb bit count %lu.\n", desired_format.ddpfPixelFormat.u1.dwRGBBitCount);
> -

Could you please also test that the allocated samples have the new media type set? Something like this:
```
    hr = IDirectDrawMediaStream_CreateSample(ddraw_stream, NULL, NULL, 0, &ddraw_sample1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    hr = IDirectDrawStreamSample_Update(ddraw_sample1, SSUPDATE_ASYNC, NULL, NULL, 0);
    ok(hr == MS_S_PENDING, "Got hr %#lx.\n", hr);
    hr = IDirectDrawMediaStream_CreateSample(ddraw_stream, NULL, NULL, 0, &ddraw_sample2);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    hr = IDirectDrawStreamSample_Update(ddraw_sample2, SSUPDATE_ASYNC, NULL, NULL, 0);
    ok(hr == MS_S_PENDING, "Got hr %#lx.\n", hr);

hr = IDirectDrawMediaStream_QueryInterface(ddraw_stream, &IID_IMemAllocator, (void **)&allocator);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    hr = IMemAllocator_GetBuffer(allocator, &media_sample1, NULL, NULL, 0);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    hr = IMediaSample_GetMediaType(media_sample1, &sample_mt);
    todo_wine ok(hr == S_OK, "Got hr %#lx.\n", hr);
    if (sample_mt)
    {
        ok(IsEqualGUID(&sample_mt->subtype, &MEDIASUBTYPE_RGB555), "Got subtype %s.\n", wine_dbgstr_guid(&sample_mt->subtype));
        DeleteMediaType(sample_mt);
    }
    hr = IMemAllocator_GetBuffer(allocator, &media_sample2, NULL, NULL, 0);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    hr = IMediaSample_GetMediaType(media_sample2, &sample_mt);
    todo_wine ok(hr == S_OK, "Got hr %#lx.\n", hr);
    if (sample_mt)
    {
        ok(IsEqualGUID(&sample_mt->subtype, &MEDIASUBTYPE_RGB555), "Got subtype %s.\n", wine_dbgstr_guid(&sample_mt->subtype));
        DeleteMediaType(sample_mt);
    }
    IMediaSample_Release(media_sample1);
    IMediaSample_Release(media_sample2);
    IMemAllocator_Release(allocator);

IDirectDrawStreamSample_Release(ddraw_sample1);
    IDirectDrawStreamSample_Release(ddraw_sample2);
```