[PATCH v4 7/9] qedit: Use the first pin's media type for filters without a filename.

[Gabriel Ivăncescu]

On 23/04/2020 22:51, Zebediah Figura wrote:
> On 4/21/20 7:19 AM, Gabriel Ivăncescu wrote:
>> Signed-off-by: Gabriel Ivăncescu <gabrielopcode at gmail.com>
>> ---
>>
>> The IFileSourceFilter is not queried for filters placed via put_Filter,
>> so obtain the media type from the first pin to use for finding a matching
>> splitter.
> 
> The async reader (at least) exposes the same (first) media type from the
> source as through IFileSourceFilter::GetCurFile(), so it seems to me we
> could simplify by using this path for all filters.
> 

But Windows doesn't query it, though, that's why I wrote that comment. 
It's not obvious now, because I've converted it to strmbase, but I had a 
test for that before. This might break custom installed filters who 
don't expose it (not Wine's own).