The VideoLAN Forums

Hi

As this is my first post, let me say thank you very much for VLC, it is a great app, which I have used for many years.

Now to my question: I have a suite of apps that I am developing for stage use (by me, not commercial) that includes a Linux based audio/midi sequencer/controller and some graphics display panels. They are written in Qt and originally I used the Qt multimedia tools for the audio. This became limiting as I wanted to introduce more audio channels as well as the jack connection kit to route multiple outputs. While looking for a more flexible API I was very happy to find libvlc, with which I have now successfully replaced Qt multimedia. The front end is still Qt. I'm using libvlc-3.0.4 from the libvlc-dev package on Debian.

Everything is working very well, but when it came to setting the jack client name with a regex string, the only way I could find to make this work was calling libvlc_new() with the —jack-connect-regex argument.

I looked at calling libvlc_audio_device_set() after setting the audio output, but I can’t seem to find the right syntax, or I am misunderstanding it’s use (which is quite likely). Unfortunately, it fails silently, so I am not sure where any error lies.

Of course using libvlc_new() could break with future changes and also means that I have to destroy and re-make a new libvlc each time I change output, which is okay, but due to the design of my app, I would prefer to avoid.

My question is whether libvlc_new() is the only way to achieve this, or is there a function like libvlc_audio_device_set() that I have missed, or am I just being dumb about the syntax?

I realise that this is probably a very rudimentary question, but I am very new to libvlc world.

Thanks,

Richard

Did you try and find your device using these other API methods? If you can find your device one of those methods will have the precise device string you need to set when you call libvlc_audio_output_device_set - the documentation for that method in fact says (in part):

Thank you very much for the reply.

To be honest, although I thought I had read the documentation carefully, that little gem slipped by me. I will try those methods as soon as I can.

Thank you for your help,

Richard