QAudioDecoder::ServiceMissingError

Store QA
1

I try to use the class QAudioDecoder but run in to problem the plugins for gstreamer

the plugin for that is seems not in by default

qt5-qtmultimedia-plugin-mediaservice-gstaudiodecoder

This seems to be needed in order to decode. If I add

Requires:   qt5-qtmultimedia-plugin-mediaservice-gstaudiodecoder

It installs the package and everything is fine.

In the spec files but when I run the validator that part fails and prints that the “Requires“ is not

allowed. What is the reason to not allow that package and is there some kind of workaround ?

I tried to copy the .so file (libgstaudiodecoder.so) and set the plugin path but still the same error.

2

have your tried BuildRequires: pkgconfig(Qt5xxx) ?

Sure you know the list of allowed apis:

I don’t know if you can add any QT feature. But I know you can add your private lib to your rpm. Search in the SDK help for “Installing and using private shared libraries”.

3

The build is ok it is the runtime that is the problem. If i install the package with pkcon from a console and then it works fine. I also tried to include the libgstaudiodecoder.so file as a private and call QCoreApplication::addLibraryPath but still no luck

4

In general if you want to publish your app in the Jolla store you have to pass the RPM validator as described e.g. here in the harbour faq:

One point of the harbour rules is that your can’t install anything in /bin, /usr/lib etc. There are good reasons for this policy. But of course you can pack needed libs in your app as private. This private libs must be installed in /usr/share/harbour-. I have done this with libs for C++, this will work.

When you required a QML packages the rpm installed this package elsewhere but not in /usr/share/harbour-. So in the Jolla store this is not possible. Maybe you have 3 options here: ask Jolla (e.g. Vige) to allow the needed QML packages. Or use C++ (or Python maybe). Or publish your app in Openrepos.

You can ask me if I can help you with C++.

(And have you checked the list of allowed apis in the link of my first post for your wanted QT package?)

Happy hacking!

3 Likes
5

I m using the QAudioDecoder from c++ I but i guess that the plugins is loaded in the same way if they where used from a QML

I managed to get the private plugin to load. I needed to put the .so file under a subfolder /mediaservice

and set the librarypath

 QString s = SailfishApp::pathTo("").toLocalFile();

  app->addLibraryPath(s);
1 Like
6

I also had to add a lot of other dependencies in the spec file but now it passes validation !

install -m 644 -p %{_libdir}/qt5/plugins/mediaservice/libgstaudiodecoder.so %{buildroot}/usr/share/%{name}/lib/mediaservice/
install -m 644 -p %{_libdir}/libgstbase-1.0.so.0 %{buildroot}/usr/share/%{name}/lib/mediaservice/
install -m 644 -p %{_libdir}/libgstreamer-1.0.so.0 %{buildroot}/usr/share/%{name}/lib/mediaservice/
install -m 644 -p %{_libdir}/libgstapp-1.0.so.0 %{buildroot}/usr/share/%{name}/lib/mediaservice/
install -m 644 -p %{_libdir}/libqgsttools_p.so.1 %{buildroot}/usr/share/%{name}/lib/mediaservice/
install -m 644 -p %{_libdir}/libgstvideo-1.0.so.0 %{buildroot}/usr/share/%{name}/lib/mediaservice/
install -m 644 -p %{_libdir}/libasound.so.2 %{buildroot}/usr/share/%{name}/lib/mediaservice/
install -m 644 -p %{_libdir}/libgstaudio-1.0.so.0 %{buildroot}/usr/share/%{name}/lib/mediaservice/
install -m 644 -p %{_libdir}/liborc-0.4.so.0 %{buildroot}/usr/share/%{name}/lib/mediaservice/
install -m 644 -p %{_libdir}/libgsttag-1.0.so.0 %{buildroot}/usr/share/%{name}/lib/mediaservice/
1 Like
7

I think that is the proper way to do it in general for libs not allowed in Harbour.

Fot the particular thing in question here, a subpackage of QtMultimedia which itself is allowed in harbour it still might be an oversight in the Harbour rules.
Perhaps asking Jolla about it would be a good thing.

8

“Perhaps asking Jolla about it would be a good thing.” What is the right forum for this ???

9

Not sure actually.

Community Meeting would be one thing, there used to be that “Developer Care” email address at one point I think, and then there’s the “Store QA” subforum.

I’ll move this topic into that subforum and try to summon @vige @vige @vige - can you shed light on any of this?

1 Like
10

Yes, those channels that you mentioned. One option to try could be also opening a PR against GitHub - sailfishos/sdk-harbour-rpmvalidator: Jolla Harbour intake RPM validator tool, with a good explanation why this should be allowed.

1 Like