[pulseaudio-tickets] [Bug 39360] New: Stereo/surround detection

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=39360

           Summary: Stereo/surround detection
           Product: PulseAudio
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: medium
         Component: core
        AssignedTo: pulseaudio-bugs at lists.freedesktop.org
        ReportedBy: fdo at vandenborne.net
         QAContact: pulseaudio-bugs at lists.freedesktop.org
                CC: lennart at poettering.net


Currently it would seem that one has to choose between stereo or surround
output, e.g. an hdmi 2.0 sink or an hdmi 5.1 sink.

This means that either multichannel content such as DVD-A, movies or other
video content will be downmixed to stereo or that stereo content will be
outputted as multichannel (with several 'silent' channels or upmixed, depending
on the 'enable-remixing' setting). The behaviour prevents receivers from
upmixing the signal to surround themselves with arguably better algorithms such
as DPL2, Neo:6 or Logic-7. 

Therefore, I would like to request a feature to have detection for the max
number of channels in the active source(s) and use the appropriate sink in the
right mode. This will allow audio to be passed through 'natively' and leave the
processing up to the receiver.

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