[pulseaudio-tickets] [PulseAudio] #198: Alsa source and Wine

[PulseAudio]

#198: Alsa source and Wine
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  Reporter:  AdamK               |       Owner:  ossman
      Type:  defect              |      Status:  closed
  Priority:  normal              |   Milestone:        
 Component:  alsa-plugins-pulse  |    Severity:  normal
Resolution:  wontfix             |    Keywords:        
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Comment (by lennart):

 Replying to [comment:4 proyvind]:
 > Isn't the purpose of a compatibility layer to be compatible?
 >
 > PCM and Master channels are two different channels, both are present on
 most (every?) systems. IMO It should be perfectly sane to change the
 volume for PCM only and not all output channels (Master), ie. you might
 want to turn the volume of PCM down while wanting the volume for playing
 CD stay the same.

 Lemme check. Ah, right. From the 5 sound cards I have in my machine only 1
 has both PCM and Master. Point proved.

 All newer (24bit) HDA lack volume control, most USB audio devices only
 have a single volume control -- if it all.

 The specific in code in WINE makes totally invalid assumptions about sound
 hardware. And judging by the comment the author was actually aware of
 this! Don't ask me to work around such a blatant violation of the ALSA
 API.

 Also, if you think that someone should add compat kludges for borken apps
 like WINE, then it is alsa not just PA.

 > I don't see why it would be more confusing for PA to provide both PCM
 and Master, not providing it seems more confusing while also breaking
 compatibility. If one really doesn't want to provide both, one should at
 least provide compatibility so that PCM == Master..

 Because if you open a ALSA mixer app then it will always show two sliders
 which interact in a very strange way. This will trigger even more bugs in
 other people's software.

-- 
Ticket URL: <http://www.pulseaudio.org/ticket/198#comment:6>
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