I built Qt 5.3.2 and programmed a C++ multimedia application, which detects my camera OK, but QAudioDdeviceInfo::availableDevices returns zero audio input and output devices, whereas the Ubuntu system settings for sound shows two of each audio device type. I have read that this problem is something to do with plugins. Is that correct?
Here are my command lines options for configure, which was followed by a make then a make install:
./configure -prefix /home/username/QtSDK/5.3.2/debug -debug -opensource -shared
-platform linux-g++ -rpath -no-c++11 -nomake tests -make tools -make libs -make examples
I don’t see any options in the Qt Linux configure for audio plugins, apart form -pulseaudio and -alsa, which it says are default choices. Where would these plugins be built and installed to? I don’t see them under the plugins directory. Or, could I be missing a required library? Or could I fix this by installing a later version of Ubuntu?
↧