[PATCH v2 0/4] MR2992: sapi: Implement basic functionality for SpMMAudioOut.

[Shaun Ren (＠shaunren)]

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  v2: sapi: Implement ISpMMSysAudio::Get/SetFormat.
      include: Add sperror error code SPERR_UNSUPPORTED_FORMAT.
      sapi: Add GUIDs SPDFID_Text/WaveFormatEx.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/2992