qreator-discuss team mailing list archive

[David Planella <david.planella@xxxxxxxxxx>]

Hi,

I just wanted to report some of the progress on the scanner. I've not
had much time to work on it, but I thought I'd share some findings.

The code is as usual in lp:~dpm/qreator/touch-scanner, but it's far from
being ready to even send a merge proposal.

I've added a feature to upload a local image to decode it, along with
some sample data (pictures I took with my phone) to test it. To use it,
just pull the bottom toolbar on the Scanner view and give it the
absolute path to the image to decode.

# Findings

- For images captured from a device (i.e. hi-res), the C++ decoder is
  significantly faster than the JavaScript one (< 1s vs. 20s).
- I was rather surprised by the speed of the C++ plugin, now I just
  need to get it to work on a device (where it didn't seem to emit
  signals, unlike on the desktop).

# Caveats

- The bottom toolbar on the Scanner view does not appear the first time
  the app is loaded. To make it appear, switch to another tab, and then
  back to the scanner. It's a rather annoying issue, but I've no idea
  where it's coming from.

Cheers,
David.

(*) I tested this using the new image upload feature and switching
between the decoders. This requires the 'qzxing-plugin' package from
https://launchpad.net/~qreator-hackers/+archive/qreator-experimental to
be installed.

To switch see the comment on
http://bazaar.launchpad.net/~dpm/qreator/touch-scanner/view/head:/qreator-touch.qml#L423