[Bug 48230] TES IV: Oblivion MP3 no longer play since wine-staging 4.17

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48230

--- Comment #10 from Zebediah Figura <z.figura12 at gmail.com> ---
Okay, now I understand part of the confusion. There aren't "3 audio backends"
in that specific sense. GStreamer is used as a library to decode compressed
audio and video and to handle large parts of the DirectShow streaming API (as
well as some parts of mfplat, and in the future probably more). It's not used
as an audio backend in itself (e.g. we don't use autoaudiosink). All audio
that's decoded by GStreamer ultimately goes through one of Wine's actual audio
backends, which are ALSA, PulseAudio, and OSS.

Previously, we implemented decoders for some specific formats in tree. For the
reasons given this is no longer the case, and we now handle those via
GStreamer. GStreamer is a hard requirement for any application that uses those
parts of DirectShow (which is most applications that use DirectShow), which is
not quite the same thing as being a hard requirement for Wine (since plenty of
applications don't use DirectShow at all).

Similarly, if you don't use 64-bit applications which use DirectShow (and you
probably don't), you don't need 64-bit GStreamer. If your distribution's
package build scripts state otherwise, that's probably something that should be
addressed there. (For example, the Debian packages distributed by WineHQ don't
require GStreamer to be installed, though they are built with GStreamer
support.)

Yes, I know it's annoying to have to install 32-bit libraries just for Wine.
Blame it on the application; we don't really have a choice in the matter.
(Besides to emulate a 32-bit system through machine code translation, but
that's rather unfeasible.) Yes, I know that from the user's perspective we
could simply not use any external libraries, but from a developer's perspective
the maintenance cost is a nightmare.

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