[amarok] [Bug 357229] amarok: skips track, jumps to middle of next track, when switching to next song in playlist

[Myriam Schweingruber via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=357229

--- Comment #3 from Myriam Schweingruber  ---
Florian: apparently you have some faulty tracks, as the error message suggests: 

audio converter error: libmad error: bad main_data_begin pointer

Just to narrow this down:
what type of tracks are we talking about?

You both use Plasma 5 apparently, did this happen with KDE4 before or is this a
new behavior with Plasma 5?

Since I can't reproduce this here at all with KDE4, I strongly suspect this to
be a new problem caused by either phonon or libmad. 
Just to make this clear: libmad (the MPEG audio converter) is not an Amarok
dependency at all, but might be for Phonon or the backends.

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[amarok] [Bug 357229] amarok: skips track, jumps to middle of next track, when switching to next song in playlist

[Florian Lindner via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=357229

--- Comment #4 from Florian Lindner  ---
The problem is not reproducible. A track that is skipped plays fine the next
time, therefore I doubt that it stems from a faulty track.

I do not remember having it before Plasma 5, but also don't think it came with
Plasma 5, either. I think it has happened with mp3 tracks only.

I concur that this is not a Amarok bug, but lies in the deeper layers of the
audio stack.

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[amarok] [Bug 357229] amarok: skips track, jumps to middle of next track, when switching to next song in playlist

[Florian Lindner via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=357229

Florian Lindner  changed:

   What|Removed |Added

 CC||florian.lind...@xgm.de

--- Comment #2 from Florian Lindner  ---
I can confirm that behaviour and I have experienced with GStreamer as well as
VLC backend.

amarok -d gives that error message:

amarok: BEGIN: void EngineController::seekTo(int) 
amarok:   [EngineController] seek to:  171000 
amarok:   BEGIN: virtual void Phonon::VLC::MediaObject::seek(qint64) 
amarok: seeking 171000 msec 
amarok:   END__: virtual void Phonon::VLC::MediaObject::seek(qint64) [Took: 0s] 
amarok: END__: void EngineController::seekTo(int) [Took: 0s] 
amarok: BEGIN: void Phonon::VLC::MediaObject::changeState(Phonon::State) 
amarok:Phonon::PlayingState  -->  Phonon::BufferingState  
amarok: END__: void Phonon::VLC::MediaObject::changeState(Phonon::State) [Took:
0s] 
[7f02bcc05e38] mpgatofixed32 audio converter error: libmad error: bad
main_data_begin pointer
amarok: BEGIN: void EngineController::slotAboutToFinish() 
amarok:   BEGIN: void Playlist::Actions::requestNextTrack() 
amarok: BEGIN: void Playlist::Actions::play(quint64, bool) 
amarok:   BEGIN: void EngineController::setNextTrack(Meta::TrackPtr) 
amarok:   END__: void EngineController::setNextTrack(Meta::TrackPtr) [Took:
0s] 
amarok: END__: void Playlist::Actions::play(quint64, bool) [Took: 0s] 
amarok:   END__: void Playlist::Actions::requestNextTrack() [Took: 0s] 
amarok: END__: void EngineController::slotAboutToFinish() [Took: 0s] 

This happens while using the VLC backend, but GStreamer backends gives the same
error message

Amarok is 2.8.0 / KDE 4.14.15, but KDE Frameworks 5 
libmad is 0.15.1b

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[amarok] [Bug 357229] amarok: skips track, jumps to middle of next track, when switching to next song in playlist

[Myriam Schweingruber via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=357229

Myriam Schweingruber  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEEDSINFO
 Resolution|--- |WAITINGFORINFO

--- Comment #1 from Myriam Schweingruber  ---
Which exact phonon backend do you have? try switching the phonon backend (there
should be gstreamer and vlc backends) and see if it happens with both (You need
to restart Plasma to make the backend change effective)

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