We are delighted to announce our continued collaboration with the Embedded Recipes conference, scheduled for September 28th and 29th at the Biermans Lapotre Foundation in Paris. For its 5th edition this year, we will be participating as a sponsor, delivering an engaging presentation, and having our team on-site to meet and greet you in person! […]
TL;DR Audio pipelines often use asynchronous devices, which must be synchronized with resampling. Measurements show CPU load of resampling reach almost 30% of a CPU core on an i.MX8M Nano. A possible optimization is to use feedback with USB UAC2 audio gadget. alsaloop already supports it, as Pipewire since a recent version. A sound server […]
Paris, June 1st, 2023 – French-Canadian company Savoir-faire Linux, a leader in open-source technological innovation and digital transformation across Canada and Europe, is set to unveil its first-ever commercial support offering for the Seapath project. This key initiative will be launched at two pivotal events in the energy industry: the LF Energy Summit in Paris […]
PipeWire, implementation and evaluation In the last article, we prepared an audio system on which we could replace the sound server. In addition, we explained the main concepts of JACK and PulseAudio in audio recording and playback. This second part presents PipeWire, how to use it in our audio system and measures its performance. PipeWire PipeWire is […]
Audio system set-up In Linux embedded system world, ALSA (Advanced Linux Sound Architecture) is the lowest level way to provide an API for sound card device drivers. However, its limitation is to only allow one process to open a device. This is why we need sound servers, which take care of handling sound streams between applications. They are the […]
Introduction Continuous Integration (CI) is a development practice that consists in constant and frequent merges of a team’s contributions into a shared repository. Code quality, reliability and non-regression are verified thanks to automated builds and testing prior merging each modification. Unlike software applications, there are multiple things to consider when setting up a CI with […]
How to bring fully distributed and secure communication capabilities to embedded products and IOT (Part 2). In a previous article, we presented our work on including Jami in Yocto. This was a huge step to make Jami available on all types of devices. But this Yocto layer was only usable for x86 architectures. In fact, […]
How to bring fully distributed and secure communication capabilities to embedded products and IOT (Part 1). Jami is a communication tool developed by Savoir-faire Linux. It is available for Windows, MacOS, standard Linux distribution like Ubuntu or Fedora and smartphones (Android and iOS). In order to give the opportunity to use Jami in embedded products […]
Using Linux with the PREEMPT_RT option can make it possible to run a modern, secure kernel on an older, limited performance single board computer (SBC), perhaps avoiding a costly hardware upgrade campaign. This topic will be addressed in two parts. The first article will consider Real-Time Linux implementation in the kernel. The second article will […]
