QAudioDecoder - defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.audiodecode"
I want to use QAudioDecoder (Debian 7).
QAudioFormat format; format.setByteOrder(QAudioFormat::BigEndian); format.setChannelCount(2); format.setCodec("audio/x-raw"); format.setSampleRate(44800); format.setSampleSize(16); format.setSampleType(QAudioFormat::UnSignedInt); decoder_.setAudioFormat(format); decoder_.setSourceFilename("/home/psy-kai/Downloads/tpimd.mp3"); decoder_.start();
But it just outputs:
defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.audiodecode"
So I compiled qmultimedia with openal, alsa, pulseaudio and gstreamer successfully from sources.
My way to compile qmultimedia:
1.) Downloading ALL missing dev-packages (for openal, alsa, pulseaudio, gstreamer and v4l)
2.) cd qtmultimedia
Checking for openal... yes Checking for alsa... yes Checking for pulseaudio... yes Checking for gstreamer... yes Checking for gstreamer_photography... yes Checking for gstreamer_encodingprofiles... yes Checking for gstreamer_appsrc... yes Checking for linux_v4l... yes Checking for resourcepolicy... no Checking for gpu_vivante... no
Then I copied all from the newly created lib-directory to my main qt lib-directory. But when I run my application it just outputs the same error again.
You should start your application with the QT_DEBUG_PLUGINS environment variable set to 1, you should then see what happens when you application tries to load its plugins.
ok, I did not know that with QMultimedia real Qt-plugins (ref: like http://qt-project.org/doc/qt-5/plugins-howto.html or http://qt-project.org/doc/qt-5/deployment-plugins.html if i am right) are used.
So now I gonna need to recompile qtmultimedia for version 5.0 (need the plugins for version 5.0, i have 5.3.2). Is there a difference for Qt between 5.0 and 5.0.2? In the 5.0 version the MODULE_VERSION misses in qmake.conf and when I add it the compiler complain about a missing source-file... (same when I use the source from 5.3.2 and change MODULE_VERSION to 5.0.0)
Why do you need to mix plugin versions ?
Now I have installed Qt 5.3.2. But I write a plugin (no qt-plugin, just a normal C++ library) for an application which is using and shipped with Qt 5.0(.?).
*I did not know which Qt5 version was used by the main application, I just knew it was Qt5.
Then you should rather work with the same version of Qt than the one that is shipped with the application