qt 基于统信的多媒体类库

如果出现了音频波形不显示的问题，可以先装官方推荐的库。仍然不显示时，安装多媒体库.
--官方推荐

sudo apt-get install gstreamer1.0-plugins-good
sudo apt-get install gstreamer1.0-plugins-base
sudo apt-get install gstreamer1.0-vaapi
sudo apt-get install gstreamer1.0-libav
sudo apt-get install gstreamer1.0-pulseaudio

--QT linux 多媒体库

sudo apt-get install libgl1-mesa-dev
sudo apt-get install gstreamer1.0-libav
sudo apt-get install gstreamer1.0-plugins-bad
sudo apt-get install gstreamer1.0-plugins-base
sudo apt-get install gstreamer1.0-plugins-ugly
sudo apt-get install gstreamer1.0-plugins-good