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An eBPF overview, part 5: Tracing user processes

May 14, 2019 by Adrian Ratiu  |   Blog

Up until now, talking in-depth about userspace tracing was deliberately avoided because it merits special treatment, hence this part devoted to it. We'll now look at the why of it, and we'll examine eBPF user tracing in two categories: static and dynamic.

An eBPF overview, part 5: Tracing user processes

Linux Kernel 5.1

May 09, 2019 by André Almeida  |   News & Events

Earlier this week, Linux Kernel 5.1 was released, and with it came over 13,000 commits from developers all around the world, including Collaborans. This time around, no less than 12 different developers contributed commits (64), sign-offs (111) & more.

Linux Kernel 5.1

CEF on Wayland upstreamed

May 08, 2019 by Santosh Mahto  |   Blog

After a successful team effort, the patch enabling the Chromium Embedded Framework (CEF) Ozone builds to run with different platform backends, such as Wayland, has finally landed upstream.

CEF on Wayland upstreamed

Collabora & GStreamer 1.16

May 06, 2019 by Aaron Boxer  |   News & Events

After a year-long development cycle, the much anticipated release was made available recently. With it came a number of exciting new features we're especially proud of, including per-element latency tracer and support for planar or non-interleaved audio.

Collabora & GStreamer 1.16

An eBPF overview, part 4: Working with embedded systems

May 06, 2019 by Adrian Ratiu  |   Blog

Now that we've studied the mainstream way of developing and using eBPF programs on top of the low-level VM mechanisms, we'll look at projects taking different approaches, attempting solutions to some of the unique problems faced by embedded Linux.

An eBPF overview, part 4: Working with embedded systems

Running Android and Wayland on embedded devices

May 02, 2019 by Robert Foss  |   Blog

A previous post introduced the SPURV Android compatibility layer for Wayland based Linux environment. In this post, we're going to dig into how you can run an Android application on the very common i.MX6 based Nitrogen6_MAX board.

Running Android and Wayland on embedded devices

An eBPF overview, part 3: Walking up the software stack

April 26, 2019 by Adrian Ratiu  |   Blog

In part 1 and 2 of this series, we took a condensed in-depth look at the eBPF VM. In part 3, we define the high-level components of an eBPF program, including the backend, loader, frontend and data structures.

An eBPF overview, part 3: Walking up the software stack

GStreamer buffer flow analyzer

April 25, 2019 by Guillaume Desmottes  |   Blog

GStreamer's logging system is an incredibly powerful ally when debugging but it can sometimes be a bit daunting to dig through the massive amount of generated logs. I often find myself writing small scripts processing gst logs when debugging.

GStreamer buffer flow analyzer

Weston debugging and tracing on-the-fly

April 24, 2019 by Marius Vlad  |   Blog

The recent release of version 6 of the Weston compositor has brought with it the weston-debug protocol, a new feature that allows developers and users alike to display on-the-fly various debugging (logging) information generated by the compositor.

Weston debugging and tracing on-the-fly

Quick hack: git-pw

April 18, 2019 by Ezequiel Garcia  |   Blog

A well-known Linux kernel developer once said, a poor craftsman famously complains about his tools, but a good craftsman knows how to choose excellent tools. Here's a python-based tool that integrates git and patchwork, and can greatly improve your toolbox.

Quick hack: git-pw

An eBPF overview, part 2: Machine & bytecode

April 15, 2019 by Adrian Ratiu  |   Blog

The second part of this series takes a more in-depth look at the eBPF VM and program studied in the first part. Having this low level knowledge is not mandatory but can be a very useful foundation for the rest of the series.

An eBPF overview, part 2: Machine & bytecode

GStreamer support for the RIST Specification

April 09, 2019 by Nicolas Dufresne  |   News & Events

Collabora contributes elements implementing the RIST Simple Profile to GStreamer. This specification adds retransmissions to RTP streams in a way that it compatible with existing broadcast encoders and decoders.

GStreamer support for the RIST Specification

A tale of two toolchains and glibc

September 30, 2021 by Adrian Ratiu  |   Blog

With the LLVM toolchain seeing increasing development and adoption alongside the older, more established GNU toolchain, projects needing to support both, in particular the GNU C library (glibc), are facing challenges and questions.

A tale of two toolchains and glibc

An xrdesktop summer of code

September 10, 2021 by Lubosz Sarnecki  |   Blog

This summer, Christoph Haag and I had the pleasure of taking part in Google Summer of Code as mentors for xrdesktop, the Open Source project bringing the Linux desktop to VR on Valve's SteamVR & Monado. Here's what was accomplished.

An xrdesktop summer of code

Adding VP9 and MPEG2 stateless support in v4l2codecs for GStreamer

June 23, 2021 by Daniel Almeida  |   Blog

Earlier this year, from January to April 2021, I worked on adding support for stateless decoders for GStreamer as part of a multimedia internship at Collabora. Here's a recap of this completed work.

Adding VP9 and MPEG2 stateless support in v4l2codecs for GStreamer

Bag of Freebies for XR Hand Tracking: Machine Learning & OpenXR

June 17, 2021 by Marcus Edel  |   Blog

In our previous post, we presented a project backed by INVEST-AI which introduces a multi-stage neural network-based solution. Now let's dive into the machine learning details of our innovative, open source hand-tracking pipeline.

Bag of Freebies for XR Hand Tracking: Machine Learning & OpenXR

Testing cameras with lc-compliance on KernelCI

June 15, 2021 by Nícolas F. R. A. Prado  |   Blog

Initiated as a joint effort by the Google Chrome OS team and Collabora, the recent KernelCI hackfest brought the addition of new tests including the ability to detect regressions on the Linux kernel that can directly affect cameras.

Testing cameras with lc-compliance on KernelCI

Zink: Summer 2021 update

June 14, 2021 by Erik Faye-Lund  |   Blog

There's a lot that has happened in the world of Zink since my last update, so let's see if I can bring you up to date on the most important stuff, including upstream development, support for OpenGL 4.6 & GLES 3.1, and more.

Zink: Summer 2021 update

Open Source OpenGL ES 3.1 on Mali GPUs with Panfrost

June 11, 2021 by Alyssa Rosenzweig  |   Blog

Panfrost, the open source driver for Arm Mali, now supports OpenGL ES 3.1 on both Midgard (Mali T760 and newer) and Bifrost (Mali G31, G52, G72) GPUs, adding a number of features, notably including compute shaders.

Open Source OpenGL ES 3.1 on Mali GPUs with Panfrost

Optimizing 3D performance with virglrenderer

May 17, 2021 by Gert Wollny  |   Blog

Collabora has been investing into Perfetto to enable driver authors & users to get deep insights into driver internals and GPU performance. Here's how we applied this work to study workloads on the virtualized VirGL implementation.

Optimizing 3D performance with virglrenderer

Mainline Linux gains accelerated video decoding for Microchip's SAMA5D4

May 11, 2021 by Emil Velikov  |   Blog

The Hantro Video4Linux2 (V4L2) kernel module has gained support for another SoC! The Microchip SAMA5D4 features a single decode unit supporting MPEG2, VP8 and H.264 streams, alongside the built-in post-processing unit.

Mainline Linux gains accelerated video decoding for Microchip's SAMA5D4

Quick hack: Patching kernel modules using DKMS

May 05, 2021 by Frederic Danis  |   Blog

DKMS is a framework that is mostly used to build and install external kernel modules. It can also be used to install a specific patch to the modules of the current kernel, such as applying a specific fix to the Bluetooth USB subsystem.

Quick hack: Patching kernel modules using DKMS

Build your own application with GTK 4 as a Meson subproject!

April 29, 2021 by Xavier Claessens  |   Blog

Building GTK 4 as a Meson subproject for your own application is not only useful for Windows builds, but also for many Linux distributions that do not yet package a recent enough version of GTK 4 and/or its dependencies.

Build your own application with GTK 4 as a Meson subproject!

Profiling virtualized GPU acceleration with Perfetto

April 22, 2021 by Antonio Caggiano  |   Blog

Recently, we have been using Perfetto to successfully profile Apitrace traces in crosvm through VirGL renderer. We have now added perfetto instrumentation to VirGL renderer, Mesa, and Apitrace to see what happens precisely in a frame.

Profiling virtualized GPU acceleration with Perfetto

Emerging ideas at Open Source Summit North America

June 16, 2022 by Kara Bembridge  |   News & Events

Big events draw in an array of individuals to learn and connect, and the Open Source Summit North America is no exception. Jam-packed with sessions to uncover from June 21 to 24, this year's event features three talks by Collabora's very own!

Emerging ideas at Open Source Summit North America

Conformant open source support for Mali-G57

June 06, 2022 by Alyssa Rosenzweig  |   News & Events

Mali-G57 features in new MediaTek Chromebooks with the MT8192 and MT8195 system-on-chips. With Mesa 22.2 and an appropriate kernel, accelerated graphics will work out of the box on Linux on these laptops.

Conformant open source support for Mali-G57

Kernel 5.18: Milestones for the road ahead

June 02, 2022 by Dmitry Osipenko  |   News & Events

Released by Linus Torvalds on May 22 after a busy two-month development cycle, Linux kernel 5.18 brings new features and lights up new hardware. Let's take a look at the contributions made by our engineering team.

Kernel 5.18: Milestones for the road ahead

Finding the secret ingredient at Embedded and Kernel Recipes

May 26, 2022 by Kara Bembridge  |   News & Events

After a two-year hiatus, the City of Lights is shinning brightly again to welcome the community for a full week of engaging talks at Embedded Recipes and Kernel Recipes conferences.

Finding the secret ingredient at Embedded and Kernel Recipes

Talks of the town: Software engineering edition

May 17, 2022 by Kara Bembridge  |   News & Events

Less than a day away, May 18th looks to be a very busy time. With Live Embedded Event and Embedded Vision Summit taking place almost simultaneously, Collabora will be presenting four different talks!

Talks of the town: Software engineering edition

PipeWire: Bluetooth support status update

April 29, 2022 by Frederic Danis  |   News & Events

Over the last two years, Bluetooth® audio support has steadily grown in PipeWire and has become a featureful, stable, conformant, open source Bluetooth® audio stack implementation. Here's a look at where things stand.

PipeWire: Bluetooth support status update

SocketCAN x Kubernetes

April 27, 2022 by Jakub Piotr Cłapa  |   News & Events

Looking to use hardware-backed and virtual SocketCAN interfaces inside your Kubernetes Pods? A new device plugin now allows processes inside a pod to communicate with each other using the full Linux SocketCAN API.

SocketCAN x Kubernetes

Monado accepted in GSoC 2022!

April 06, 2022 by Frédéric Plourde  |   News & Events

Monado has been accepted for the first time as a mentoring organization for the 2022 Google Summer of Code (GSoC)! Collabora will be providing three mentors to support contributors who want to work on Monado-related projects.

Monado accepted in GSoC 2022!

Kernel 5.17: Solid & steady

March 31, 2022 by Sebastian Fricke  |   News & Events

While eastern Europe has experienced ghastly events that have shaken the world, the latest Linux kernel release could aptly be named "Solid & Steady." Here's a look at some of the contributions made by Collabora's kernel team.

Kernel 5.17: Solid & steady

School's back in session at Open Source 101

March 24, 2022 by Kara Bembridge  |   News & Events

Join us next week for Open Source 101, a one-day conference where we'll dive into the latest around FOSS virtual & augmented reality, and look at the implications of enabling automated testing upstream.

School's back in session at Open Source 101

Portable Linux gaming with the Steam Deck

March 01, 2022 by Simon McVittie  |   News & Events

Congratulations to Valve on the release of the Steam Deck, their new handheld gaming PC! With it comes a new release of SteamOS, complete with a brand new A/B design for seamless system updates.

Portable Linux gaming with the Steam Deck

New faces for new challenges

February 28, 2022 by Kara Bembrirdge  |   News & Events

As the globe still navigates the twists and turns of the times, Collabora can confidently say we've been steadily on the rise. We've added brand new members to our crew who are more than equipped to keep pace.

New faces for new challenges

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Upcoming Events

Here are the events we'll be attending in the coming weeks – come say hello!

NeurIPS

December 10-15, Vancouver, Canada

FOSDEM

February 1-2, Brussels, Belgium

 

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