3rd Party Software

Solved: if anyone encounters the same issue there's the solution that worked for me.

delete the following file in the cache:

rm ~/.cache/gstreamer-1.0 registry.x86_64.bin

and then run:

gst-inspect-1.0

to regenerate it. now the plugins are visible and usable by all users.

@Pablo-J-Rogina
@Deedss

You could also check the max number of bytes you can encrypt ..

qDebug() << publicKey.maximumEncryptSize(QCA::EME_PKCS1_OAEP);

which gives , on my env 470
So you cant encrypt anything larger .. and I don't know any method to increase that limit. I think you dont need to use for data encryption.
public key is good to use for encrypting key for a symmetric scheme that encrypts files.
If you really are limited to RSA keys .. given the JSON input .. best thing you can do, may be is split JSON to individual values .. and encrypt each ..

@mikkel1156
The right way to get against policy CMP0026 warnings .. which also can appear as errors on newer Cmake versions is by setting:

cmake_policy(SET CMP0026 OLD)

this should be done at least in qca\cmake\modules\QcaMacro.cmake

I have the same problem. what is the the solution. Thanks.
I tried LIBS += "C:/Program Files/MATLAB/R2019b/extern/lib/win64/mingw64/libeng.lib"
and LIBS +=
-L"C:/Program Files/MATLAB/R2019b/extern/lib/win64/mingw64/"
-llibeng
and still not worked

@jsulm
I applied the patch and rebuild the whole thing (since I don't know how to build qtbase alone using configure), and that solves the problem.
Also, the patch seems to have been applied in version Qt5.15.2 as the updated comment of QTBUG-86704 indicates.

However, remote debugging on the Pi 4 is not really stable it seems, possibly due to a buggy PiOS/Raspbian GDB implementation.

Hi and welcome to devnet,

QtGStreamer is unmaintained.

Depending on what you want to do, you can use the custom pipeline option of QMediaPlayer::setMedia.

@jsulm
thank you really much - now i can really start to learn/write :D

It was several years ago, but I was able to get a cross-platform (macos, windows) desktop application successfully playing audio with:

libsndfile http://www.mega-nerd.com/libsndfile/ PortAudio http://www.portaudio.com/usinggit.html

Not sure if anyone urgently needs to parse mp3 files anymore, but note that libsndfile still does not handle mp3: http://www.mega-nerd.com/libsndfile/FAQ.html#Q020 (as of Nov 2020)

@zedhzelgc said in QwtPlot set curve samples error:

Thank you very much!
I have changed the code so that when I finish the QFutureWatcher sends a signal to a GUI thread slot. This slot updates the data with setSamples () and makes the graph replot. I didn't get the error again.

In other occasions I have done it directly from the QFuture and I haven't received any error but knowing that the setSamples() is related to GUI and not only updates series data it is better to do it from the GUI thread.

setSamples does not lead to any updates of the GUI - beside the autoReplot flag has been set.
But there might be races, when changing the samples while the update process is mapping the samples into paint device coordinates. You could derive from QwtSeriesData and add an mutex there in case concurrent access is important.

@SGaist said in Building a 3rd party lib:

It means that what's between the curly brackets apply only to Unix like OS like Linux and macOS.
Since you are building on Windows, that part is going to be ignored.

Yes i got it,
my bad for not noticing that

Thank you.

Hi, I cannot show my project as it is proprietary, but you can implement it exactly as I described above.
Simplest form, just create the override in the same header to the class you have your socket, then just create a socket as you normally would, pass it into a BufferedInputStreamWrapper as I showed, and then you connect readyRead to whatever function you want to parse your data and call the ::capnp::PackedMessageReader reader(*bufferedInputStreamWrapper); in that function.

This only works if the amount of data you are sending is small and doesn't trigger multiple readyReads, which I painfully found out the hard way. I have not yet made a KJ eventloop integration, as I don't really know how.

I will honestly most likely abandon QTcpSocket for this project and use another socket library, like Poco where this is not an issue.

Not directly but you can use QWidget::createWindowContainer.

@Srsirsat Linux would be easier (easier to set up dependencies).
You will need to build/install mandatory dependencies first mentioned in the link I posted.
OpenSceneGraph: http://www.openscenegraph.org/index.php/documentation/platform-specifics/windows

Hi,

Did you check that you have all dependencies required for the freeglut .dll if any ?

Hi and welcome to devnet,

Why not use a layout for that ?

@SGaist

Thanks for the question.

That made me search for the function. I had never implemented a function by that name.

Searching, I found the reference in mainwindow.h, private slots.
I have no clue, how it landed in there.

Removing it , fixed the issue.

Argh, I was really pulling out hair.

Thanks!

Manu