playbin.query_position fails

[rffontenelle]

I was subtitling at the moment, with video open, and I'm not sure whether was writer in a entry or just pressed "j" to add a new entry, when a popup with the following message showed up.

Traceback

File: /usr/lib/python3.6/site-packages/gaupol/agents/edit.py
Line: 150
In: _on_insert_subtitle_at_video_position_activate

    index = bisect.bisect_right(starts, pos)

TypeError: '<' not supported between instances of 'NoneType' and 'float'

Environment

Platform: Linux-4.14.15-1-ARCH-x86_64-with-arch
Locale: pt_BR.utf_8

Versions

aeidon: 1.2
chardet: 3.0.4
enchant: 2.0.0
gaupol: 1.2
gstreamer: 1.12.4.0
gtk+: 3.22.26
pygobject: 3.26.1
python: 3.6.4

P.s.: The installed enchant version is actually 2.2.1

[rffontenelle]

I initially thought it crashed, but it seems that it didn't and I'm still using it without having to close it.

[otsaloma]

It seems that querying position from GStreamer fails (playbin.query_position). That's where the None comes from. There's another issue where the same thing failed in a different context: #67

So, this does look like a bug, but I can't tell under what conditions it happens, can't reproduce it and don't really know what do in such a case. Suggestions are welcome.

[rffontenelle]

Fair enough. I'll try to reproduce it somehow and let you know.

[otsaloma]

I suspect the problem is due to some kind of a temporary pipeline state or state change and if the query is not succesful, it's worth waiting a tiny amount and trying again. I added such a fix in the above commit. I also added some checks against the None value, so if the root problem persists, you shouldn't get an error anymore, but whatever ongoing action will silently fail. I keep this issue open for now, close it later if the problem has indeed been solved.