Re: [PATCH 0/5] MR5120: mfreadwrite/reader: Implement source reader decoder / video processor pipelines.

[Nikolay Sivov (＠nsivov)]

Nikolay Sivov (@nsivov) commented about dlls/mfreadwrite/reader.c:
> +    UINT32 count;
> +    HRESULT hr;
> +    GUID key;
> +
> +    hr = IMFMediaType_GetCount(decoded_type, &count);
> +    while (SUCCEEDED(hr) && count--)
> +    {
> +        PropVariantInit(&value);
> +        hr = IMFMediaType_GetItemByIndex(decoded_type, count, &key, &value);
> +        if (SUCCEEDED(hr) && FAILED(IMFMediaType_GetItem(output_type, &key, NULL)))
> +            hr = IMFMediaType_SetItem(output_type, &key, &value);
> +        PropVariantClear(&value);
> +    }
> +
> +    return hr;
> +}
> Is that exactly what we need, to preserve existing attributes? If not, another option is to copy everything based on Compare() result.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/5120#note_62809