[Bug 42414] The Witcher 3 intro videos don't play

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=42414

--- Comment #10 from Andrew Eikum <aeikum at codeweavers.com> ---
(In reply to Kimmo Myllyvirta from comment #9)
> builtin xaudio2 supports 32-bit float formats, but only mono and stereo, not
> 6-channels, which is used for most of the movies/cinematics in this game.
> The game actually handles the return values, and gracefully skips everything
> it can't play.
> 
> Attached patch works, all the videos play, but (for me) it causes lots of
> crackling/pops, this needs a bit different patch. Consider the attached
> patch as a proof-of-concept.

Yeah, your analysis is correct. The --32 formats like AL_FORMAT_QUAD32 are for
signed integer audio formats, not for IEEE float, so those won't work.

Looks like OpenAL doesn't have any defined formats for 6-channel IEEE float.
It's not immediately obvious to me if openal-soft even can downmix 6-channel
float.

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