[Bug 48836] Movies in 'BlazBlue Calamity Trigger' play without audio

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48836

Paul Gofman <gofmanp at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |gofmanp at gmail.com

--- Comment #3 from Paul Gofman <gofmanp at gmail.com> ---
I tested this game a short while ago.

It actually plays the sound OK, just with zero volume. The application sets
volume of -10000 (min, i. e. zero volume) itself through Basicaudio_put_Volume
to an output filter from filter graph. This is triggered by a special code path
in BBCT which is not run on Windows. The application adds initializing the
filter graph basically like this: 
CoCreateInstance(&CLSID_FilterGraph, ...
IFilterGraph2_AddSourceFilter(graph, L"data/MoviesHD/bbcsopening.wmv",
L"SOURCE", ...
...
Then it does  IBaseFilter_FindPin(source_filter, L"Output",... on source filter
and Wine returns the pin as it has AsyncReader class there. Windows returns
VFW_E_NOT_FOUND there because it created WMAsfReader filter for this media
format, and this filter has different pins: separate audio and video output
with different names. If I ultimately return VFW_E_NOT_FOUND from
strmbase/filter.c:filter_FindPin() the sound is OK under Wine. If I replace
data/MoviesHD/bbcsopening.wmv with some other movie file with different format
for which Windows also creates AsyncReader source, the video is played without
sound on Windows just like on Wine.

So it looks like a proper fix would be implementing WMAsfReader class.

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