Re: [PATCH 0/5] MR553: mf: Some attribute tweaks to fix Resampler transform regressions.

[Nikolay Sivov (＠nsivov)]

Nikolay Sivov (@nsivov) commented about dlls/mf/sar.c:
>  }
>
>  IMFMediaType_DeleteItem(renderer->media_type, &MF_MT_AUDIO_PREFER_WAVEFORMATEX);
> - IMFMediaType_DeleteItem(renderer->media_type, &MF_MT_AUDIO_VALID_BITS_PER_SAMPLE);
> - IMFMediaType_DeleteItem(renderer->media_type, &MF_MT_AUDIO_CHANNEL_MASK);

Same here regarding the tests, verifying that what we remove is actually meant to be missing. As I recall renderer returns several possible types on Windows, including spatial one. We don't currently, but it's possible MFInitMediaTypeFromWaveFormatEx() was an overkill and we only need to set a few attributes instead.