[Bug 60530] New: winmm: waveOutGetVolume fails with MMSYSERR_INVALHANDLE when given a device ID (MTGO plays no sound)

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=60530

            Bug ID: 60530
           Summary: winmm: waveOutGetVolume fails with
                    MMSYSERR_INVALHANDLE when given a device ID (MTGO
                    plays no sound)
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: mfplat
          Assignee: [e-mail]
          Reporter: [e-mail]
  Target Milestone: ---
      Distribution: ---

dlls/resampledmo/resampler.c implements IWMResamplerProps::SetHalfFilterLength
as a stub that returns E_NOTIMPL. On Windows the call succeeds (it sets the
resampling quality, 1-60).

NAudio's MediaFoundationResampler, the standard way to convert audio formats in
NAudio, the most widely used .NET audio library, calls SetHalfFilterLength
right after SetInputType/SetOutputType when it creates the transform. .NET COM
interop turns the E_NOTIMPL into a COMException on NAudio's playback thread, so
no audio is ever passed through ProcessInput/ProcessOutput and that output
stays silent.

Impact: Magic: The Gathering Online converts every sound effect (16-bit stereo
WAV to a 44.1 kHz float mono mixer) with MediaFoundationResampler, so it has no
sound at all under Wine and Proton. This very likely affects every .NET
application that resamples with NAudio, and any native application that treats
the failure as fatal.

Trace (WINEDEBUG=trace+dmo,fixme+dmo) for each sound:
  trace:dmo:transform_SetInputType ...
  trace:dmo:transform_SetOutputType ...
  trace:dmo:unknown_QueryInterface ... iid
{e7e9984f-f09f-4da4-903f-6e2e0efe56b5}   (IWMResamplerProps)
  fixme:dmo:resampler_props_SetHalfFilterLength iface ..., count 60 stub!
followed by no ProcessInput/ProcessOutput calls on that transform.

Expected: SetHalfFilterLength accepts the value (returning S_OK). The
FFmpeg-based resampler can choose its own filter, so ignoring the hint is
enough for these applications; with that change MTGO's sound works.

IWMResamplerProps::SetUserChannelMtx is the same kind of stub and may cause
similar failures.

Note: this was found while debugging MTGO with the help of an AI assistant. No
code is attached; the description above is the whole report.

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[Bug 60530] resampledmo: IWMResamplerProps::SetHalfFilterLength returns E_NOTIMPL, NAudio's MediaFoundationResampler throws and drops all audio (MTGO has no sound)

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=60530

[e-mail] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|winmm: waveOutGetVolume     |resampledmo:
                   |fails with                  |IWMResamplerProps::SetHalfF
                   |MMSYSERR_INVALHANDLE when   |ilterLength returns
                   |given a device ID (MTGO     |E_NOTIMPL, NAudio's
                   |plays no sound)             |MediaFoundationResampler
                   |                            |throws and drops all audio
                   |                            |(MTGO has no sound)

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