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maemo.org - Talk (https://talk.maemo.org/index.php)
-   Applications (https://talk.maemo.org/forumdisplay.php?f=41)
-   -   mbarcode (https://talk.maemo.org/showthread.php?t=34996)

lardman 2010-12-08 09:31
Re: mbarcode
 
mBarcode starts too slowly for my liking, so I've added some qDebug()s with elapsed times. This is what we see with the first run through (not all classes instrumented):

Code:
event        elapsed time        event time
startup        0        0
show spash screen        266        266
start main window class        269        3
killing camera app        400        131
set window title        400        0
register dbus metatypes
and connect to shutter/button
signals        413        13
determine initial lens cover state        414        1
load settings        417        3
Create BarcodeDetector        421        4
create Resultswindow        512        91
create VideoWidget        2958        2446
Set autofocus, etc.        2959        1
connect some signals        2959        0
set some window attributes        3020        61
start video widget        3756        736
set videowidget as central widget        3759        3
create and run plugin loader
thread, register Dbus connections        6824        3065
So it looks like the GStreamer pipeline setup is taking a rather long time, and surprisingly the plugin loader thread (or the DBus connection registration) too, I need to look into that as it should really run async...

lardman 2010-12-08 09:34
Re: mbarcode
 
Hmm, that table looks awful, will edit it to remove the tabs

rmerren 2010-12-08 14:59
Re: mbarcode
 
Just wanted to mention again how great this app is! A friend recently got an android phone and wanted to show off the super cool app she had. She can scan bar codes and look stuff up! I pretended to be impressed.

Another friend was scanning a qr code with inigma on his iPhone yesterday. I had inigma on a previous windows phone and it is a good scanner, but neither that version nor the iPhone version is as quick or offers as many options as mBarcode.

So kudos to the author!

lardman 2010-12-08 15:09
Re: mbarcode
 
Thanks for the nice comments rmerren :)

Going back to the startup speed, looks like I made a school-boy error moving the plugin loading to a thread some months ago, I've now fiex this and we end with a startup time which is twice as quick, however the plugin loading still needs to be done. My preference would be to defer this until after the UI is displayed and then let it run in a bg thread, but apparently it's not possible to set thread priorities so this interferes with the camera view, so I'm currently thinking that the plugin loading should be performed when the results window is first displayed - this produces a delay, which is not ideal, so I'll see if there are any other options re. threading.

In any case I hope to have a new version in Extras-devel this evening.

Den in USA 2010-12-08 16:52
Re: mbarcode
 
1 Attachment(s)
Today I tried generating a link to this thread:

Attachment 16225


Works great!

lardman 2010-12-08 18:15
Re: mbarcode
 
Quote:
Originally Posted by Den in USA (Post 892394)
Today I tried generating a link to this thread:

Attachment 16225


Works great!

Lol, thanks :)

Time to get QR codes added to the maemo downloads page so we can install packages automatically too.

lardman 2010-12-08 18:18
Re: mbarcode
 
Right, I've pushed a version of mBarcode that is faster to startup, but then takes longer to display the results window (on the first go), see what you think.

Den in USA 2010-12-08 18:35
Re: mbarcode
 
@ lardman - For my Diablo version I stll need to go through terminal to run. However, not a problem since I use "Personal Launcher" and checked "Run in Terminal".

lardman 2010-12-08 19:07
Re: mbarcode
 
Yeah Diablo has unfortunately been almost forgotten.

I suppose we should try a backport of some of the newer features, but we'll need to change the UI. How many people are still using mBarcode with Diablo? Anyone fancy taking on the challenge (with me)?

AgogData 2010-12-13 11:21
Re: mbarcode
 
i saw an update yesterday but couldn't update, is there some bug ?


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