Phonon VolumeFaderEffect not working with VLC backend

[David Jarvie]

On Sunday, 1 May 2022 19:59:46 BST David Jarvie wrote:
> On Sunday, 1 May 2022 00:23:30 BST Harald Sitter wrote:
> > Unfortunately VolumeFaderEffect is presently not supported by VLC
> 
> Is it possible to determine programmatically whether the current backend
> supports VolumeFaderEffect? I looked at the output from
> BackendCapabilities::availableAudioEffects(), and for GStreamer it returns
> names and descriptions:
> 
> "equalizer-10bands",  desc: "Direct Form 10 band IIR equalizer"
> "KEqualizer",  desc: "Compatibility effect. Do not use in new software!"
> "audiopanorama",  desc: "Positions audio streams in the stereo panorama"
> "audioamplify",  desc: "Amplifies an audio stream by a given factor"
> "audiodynamic",  desc: "Compressor and Expander"
> 
> None of these is (to me) obviously related to VolumeFaderEffect. For VLC,
> only the first one is returned, "equalizer-10bands".

I just discovered that VolumeFaderEffect::isValid() tells whether the backend 
supports VolumeFaderEffect. So please ignore my last message.

Thanks,
-- 
David Jarvie.
KDE developer, KAlarm author.