search

performous / composer

Song editor for Performous and other singing games
Other
39 stars 23 forks source link

Play button just opens the load music dialogue #36

Closed mirabilos closed 4 years ago

mirabilos commented 5 years ago

commit beeea23502b5f21a623b8ddb494cbe67fc7c1947 (latest as of this writing)

If I click the Play button, it just always opens the dialogue to select a music file to load. (It then loads it and does lengthy processing, as indicated in the status bar.)

mirabilos commented 5 years ago

Also applies to V2.0 ☹

Perhaps my Qt 5.11.3 is just too new?

mirabilos commented 5 years ago

Surprisingly, it doesn’t even work with the below diff:

x.txt

Apparently, the currentMedia() is always empty (debugging shows it to be QUrl(""))…

mirabilos commented 5 years ago

https://stackoverflow.com/q/45696232/2171120 someone else has the problem (the suggested answer doesn’t help)… looking into system configuration now.

mirabilos commented 5 years ago

switching from phonon4qt5-backend-vlc to phonon4qt5-backend-gstreamer does not solve this either

mirabilos commented 5 years ago

According to https://stackoverflow.com/a/22046880/2171120 the package libqt5multimedia5-plugins must be installed for Qt5 to produce audio. The already-extant debugging information was a great hint (no supported sample rates‽), but even with this package installed, it’s empty:

$ performous-composer                                                                        
qt5ct: using qt5ct plugin
qt5ct: D-Bus global menu: no
PulseAudioService: pa_context_connect() failed
Synth output format not supported, trying nearest
Synth output format not supported, trying nearest
QAudioDevice info
Supported codecs:
Supported sample rates:
Supported sample sizes:
Supported sample types:
Supported byte orders:
Supported channel counts:
Synth output format not supported, trying nearest

Playback works now, though…

mirabilos commented 5 years ago

Got that fixed, too…

sudo dpkg-divert --rename \
  --divert /usr/lib/x86_64-linux-gnu/qt5/plugins/audio/libqtmedia_pulse.disabled \
  --add /usr/lib/x86_64-linux-gnu/qt5/plugins/audio/libqtmedia_pulse.so

Just deleting /usr/lib/x86_64-linux-gnu/qt5/plugins/audio/libqtmedia_pulse.so would also do the trick (until the next system update). Qt apparently provides no way to select the default audio backend at runtime, and the pulse backend declares itself as “default”.

The dependency bug is now: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=939712

Baklap4 commented 4 years ago

@mirabilos seems this is not an issue of ours then? Closing it for now, if you think otherwise please reopen this 👍

mirabilos commented 4 years ago

Yes, it’s at best a documentation issue.