message: "Invalid stereotool library"

[PetaVolt]

Hello,

I've recently upgraded liquidsoap to version 2.2.1 with intentions to start using stereotool. I'm running on Ubuntu 22.04 x64. Following the docs, I adding the stereotool operator in the script and it results in this error:

stream liquidsoap[8564]: Error 14: Uncaught runtime error:
stream liquidsoap[8564]: type: invalid,
stream liquidsoap[8564]: message: "Invalid stereotool library",
stream liquidsoap[8564]: stack: at audio.liq, line 232, char 6-73,

Here's a snippet of the stereotool block that's being used:

final = stereotool(
  library_file="/home/spencer/Stereo_Tool_Generic_plugin_992",
  license_key="<3f...2a>",
  preset="/home/spencer/audio-files/liquidsoap/preset.sts",
  final
)

Commenting this block of code results in no errors and works without issue. It's also worth noting I've tried stereotool versions 10.10 and 9.92, same results on both. Help would be appreciated.

Thanks!
Spencer

[vitoyucepi]

Hi @PetaVolt,
The Stereo Tool plugin has a strange packaging. It provides an all-in-one archive of plugins for all operating systems and all architectures.

Could you please describe step by step how you downloaded and installed the plugin.

1. Go to https://www.thimeo.com/stereo-tool/download-992/.
2. Scroll down to x86/64 Linux Thimeo-ST Plugin.
3. Right-click the Plugin SDK with binaries for all OS's button.
4. Select Copy link address from the context menu.
5. On the server, use the commands

   wget https://download.thimeo.com/Stereo_Tool_Generic_plugin_992.zip
   unzip Stereo_Tool_Generic_plugin_992.zip

6. In liquidsoap specify

   final = stereotool(
     library_file="/home/spencer/Stereo_Tool_Generic_plugin_992/libStereoTool_64.so",
     license_key="<3f...2a>",
     preset="/home/spencer/audio-files/liquidsoap/preset.sts",
     final
   )

[PetaVolt]

Hello Vito,

Thanks for the explanation. I updated the script as you specified and that did the trick. My understanding was liquidsoap only needed the directory, rather than the file.

I'm now running into a separate issue where the script fails when running in --daemon mode but works fine otherwise. I'll continue to dig into this.

[vitoyucepi]

If you are planning to run liquidsoap with systemd, then I can recommend that you take a look at #2558 and #3354.