hello

will this work forum.wownero.com/t/junkie-jeff-4th-july-hard-fork-information/554

very interesting as concept

i dont know if will succeed

hi

qr scanner dont work on windows & linux

on linux when u click on qrcode image u'll c a blank screen

on windows camera open but cant read code

open camera and is not doing anything else

i put qr image from all ungle so is is code problem

never tried on a laptop, but fwiw tested it recently on android and it worked just fine.

maripol: might be a deployment issue, like a missing Qt pluggin

more precisely the Qt multimedia pluggin

qt multimedia is on cmake file so is other issue

on android works but most uses windows and few linux

0.01 uses android

i don't really understand why someone would want to scan a QrCode on a laptop

is easier from copying all ..... monero address

there are tablets that runs windows

or linux

qrcode is must!

"tablets that runs windows or linux" didn't know they exists, fair enough

hi

qr scanner dont work anywhere

windows,linux android!

before was working on android but now even there no!

maripol: the QR Scanner isn't supported on windows and linux

Not sure what build you're running on Android, but you need to make sure it was compiled with -DWITH_SCANNER

is compiled -DWITH_SCANNER on all versions

option(WITH_SCANNER "Enable webcam QR scanner" ON)

For Linux to work you need to compile Qt with -gstreamer, for Windows to work you need to include "vfw.h" in main.cpp. Not sure about Android.

"compile Qt with -gstreamer" -> And have gstreamer-plugins-bad and gstreamer-plugins-good installed on your system.

we are talking about static version.why u'll need gstreamer-plugins-bad and gstreamer-plugins-good installed

Good luck trying to get GStreamer to static link.

oh

gstreamer is module outside qt?

GStreamer is the multimedia backend for Linux for QtMultimedia.

Gstreamer itself loads plugins at runtime.

Camerabin, which is required by Qt to load the camera, has a couple dozen other plugin dependencies.

There is a way to compile and include plugins statically

which

But you'd have to figure out exactly which dependencies camerabin needs (which is not trivial, there is no way to get a dependency graph afaik) otherwise you bloat the binary with 50MB of useless plugins

Moreover

In Qt6.2 the entire QtMultimedia is revamped

and camera access no longer depends on camerabin, but some other plugin

so you'd have to do it all over again

we are talking about qt 5.15.2

why qt6

Yes, I know

I'm saying that, everything changes in Qt 6.2

i'm confused from what u said

what to do know

what to do now

Depends on what you want to achieve

qrcode scanner to work

is very important

On linux?

everywhere

before was working on android now not

on windows was working now not

Can't help you with Android, haven't developed on that OS.

Windows should be easy

one sec

I'm pretty sure this is all you need: paste.debian.net/plainh/c7ba109f

For macOS you're going to have to rewrite the scanner logic

on main.cpp

because its multimedia backend doesn't support QVideoProbe

so you'll have to use QCameraImageCapture instead

"on main.cpp" -> yes

ok on linux?

On Linux the only way is to either

spend two weeks of your life trying to get GStreamer and all its dependencies and plugins to static link

or ship the application as an AppImage

"ship the application as an AppImage" what will be the benefit

QR scanner worked already

If you go for the latter you're still going to have to manually include a plugin bundle and trick GStreamer to load plugins from the AppImage instead of the local filesystem

on Mac

Oh interesting

will check if it got broken recently but not aware of it

It didn't work on my machine

is not working anywhere anymore selsta

i confirm

Any logs?

I'm compiling currently, can test once I compiled

on linux is blank screen

on android the same

this should also fix it on windows monero-project/monero-gui #3464

on windows camera open but nothing happens

but I never tested it on windows

selsta that fix is on cmake file

Qr scanner worked without issues on mac

windows,linux,android ?

mac

What macOS version?

the only that i dont have mac

11.4

I guess Qt docs are wrong then

I'm quite sure that is also works on Android and Windows, only static Linux was the issue

can u try it now or not possilble?

not really, I only have Mac and iOS phone

make a executable for us

tobtoht: what exactly failed for you on mac?

i have android phone

and linux

selsta: Well, to be exact QVideoProbe would not deliver valid QVideoFrames.

I'm on Catalina though (10.15)

also it appears I'm wrong on AV Foundation not supporting QVideoProbe. It's only missing for recording and media playback, not camera.

so it must be my machine / this version of macOS that's having issues

anyway is not working on windows,linux,android

selsta can u make exe for linux or android to test

it not working on linux is expected

and it's not going to work without a ton of effort

if i'm so mad to try use qt6 instead of qt5 will be any benefit about qrcode scanner or no?

GUI won't compile on Qt6 currently

why?

Qt6 has a few breaking API changes

so those need to be resolved in the code first

no escape

qrscanner is very important

selsta any suggestion?

currently no, but malinero said they got it to work on android

how?

whereis he

"Qt6 has a few breaking API changes" -> And it's not trivial either: QVideoProbe (which provides video frames to the qr scanner) got removed in Qt 6, so a rewrite of the scanning logic will be necessary.

Also, Qt6.2 which is the first Qt release to include QtMultimedia, which the Qr scanner needs, is still in alpha and a nightmare to build as Guest6033 can attest to.

oh

maripol: did nothing special for the camera, just followed the standard android build. try testing with an apk from CI pipeline

link for apk?

^ need to be logged in to github to view, probably

yep

i need to create account