Alien Pastures

My thoughts on Slackware, life and everything

Tag: pipewire

Your input requested for DAW Live

December 15, 2024 / / 4 Comments

It has been a long time since I had a serious look at my audio software set, and the Slackware DAW Live ISO image which is meant to showcase all of that software.

Life interfered and priorities shifted.

Now I am looking at 2025 and the Christmas holiday week which precedes it, and am pondering where to put my energy and time. Considering the lack of clarity about the next stable Slackware release (something which really annoyed me in the few years leading up to Slackware 15.0) and the relative certainty that KDE Plasma 6 is not going to be included in that next release, I am not looking forward to kickstarting my obsolete ktown repository for Plasma 6. It would eat up a lot of my time and I am a happy Plasma 5 user.
So, I decided it would be more productive and rewarding to revive the DAW and audio software project.

I will not focus on a refresher of my Slackware 15 based DAW Live Edition. I want to switch to Slackware -current, realizing full well that this may cause new frustrations along the way when stuff breaks as a result of a Slackware update, but I really want to experiment with Pipewire – for sure as a replacement for Pulseaudio but perhaps also as a replacement for the Jack Audio Toolkit. Who knows.

However, I have not been playing/experimenting with Slackware’s sound system since 2022, the whole Pipewire adventure has passed me by. If I want to rebuild & refresh that large set of software, I need to start with the basics and that is to get a low-latency ‘pro’ sound subsystem off the ground that I can understand and adapt to the needs of a Live Edition.

HELP!

Therefore a request to you, blog regulars, to help me understand how to get rid of Pulseaudo in Slackware and replace it with Pipewire. How does Jack still fit in this configuration? Should it remain the main sound server? Should Pipewire replace it, providing the binary API to Jack-enabled applications? Should the choice to have Pipewire or Jack as the main sound server be something you would want to make after login?

Anything you have already mastered and all the bugs and nasties that you have already eradicated, will save me some precious time and give me more motivation to restart the project during my Christmas break.  Use the comments section below to describe your challenges, your solutions and your resulting setup; or link to pages / pastebins that contain Slackware-specific information.

And somewhat related, since I am not a musician or audio technician: I want to understand better how to connect the audio software to audio hardware: how do you link up a DAW like Ardour to an external USB sound card, a MIDI controller keyboard, hardware synths, microphones etc.
Some synths present themselves as another external USB sound card as well – how do you deal with that when you already route your audio through your FocusRite Scarlett? It boggles the mind when you have to try and make sense of it when you do not have music-making friends in physical proximity.

Eventually I want to have a working studio in my attic and be able to create music, not just create a music production enviroment like Slackware DAW Live.

I would love to read all your feedback and hopefully it will be enough already next weekend to help me startup when my off-week starts 🙂

Cheers, Eric

Some recent package updates: chromium (-ungoogled), ffmpeg, handbrake, pipewire-jack

September 1, 2023 / / 23 Comments

Chromium, regular and un-googled.

Google is speeding up its Chromium release cycle. Let’s see if I can keep up since I also build the -ungoogled variant. The latest update is 116.0.5845.140 and addresses a vulnerability.
You can now upgrade to my latest chromium and chromium-ungoogled packages. The updated Slackware 15.0 and -current packages both for chromium and chromium-ungoogled are available in my repository and its mirrors (like my own US server and the UK mirror).

FFmpeg.

A recent upgrade of Vulkan in slackware-current prompted a rebuild of the ffmpeg 5.1.3 distro package, and for the same reason I had to recompile my enhanced ffmpeg package for -current. I used the opportunity to add an embedded version of SVT-AV1, an open source AV1 video encoder originally developed by Intel in collaboration with Netflix and later adopted by the Alliance for Open Media. My ffmpeg package already contains an AV1 decoder: the dav1d library, but now you can have a go at creating your own video in AV1 format.
Get ffmpeg-5.1.3 for -current here (unrestricted distribution) or here (this version can encode AAC audio and hence restricted to distribution outside the US).

Handbrake.

The version of this package targeting slackware-current also needed a recompile due to the Vulkan update in -current and here I used the opportunity to apply a minor version upgrade.
Get handbrake-1.6.1 here (unrestricted distribution) or here (this version can encode AAC audio and hence restricted to distribution outside the US).

Pipewire-jack.

In slackware-current, pipewire is a moving target. I know that a lot of people have switched from using pulseaudio and jack to just pipewire with varying levels of success. I keep offering the Jack Audio Connection Kit support libraries for pipewire which are not present in the Slackware pipewire package, simply because Pat compiles pipewire without jack installed.
Note: my pipewire-jack package is not replacing Slackware’s pipewire! It’s an add-on which depends on my jack2 package being installed as well. It’s quite similar in purpose to my pulseaudio-jack package which aims to add support for Jack in pulseaudio.
Get pipewire-jack-0.3.79 here.

Enjoy the weekend! Eric

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