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Cross-compiling with gst-build and GStreamer

May 15, 2020 by Stéphane Cerveau  |   Blog

gst-build is one of the main build systems used by the community to develop the GStreamer platform. In my last blog post, I presented gst-build and explained how to get started with it. Now, let's get straight to the point regarding cross-compilation.

Cross-compiling with gst-build and GStreamer

Using syzkaller, part 3: Fuzzing your changes

May 12, 2020 by Andre Almeida  |   Blog

In part 2 of this series on syzkaller, we looked at how to install the tool and use it to improve our code base. Now, how does syzkaller report a bug it finds in the execution path of a system call? Let's add a new syscall description and see how it goes.

Using syzkaller, part 3: Fuzzing your changes

xrdesktop 0.14 with OpenXR support is here!

May 08, 2020 by Lubosz Sarnecki  |   News & Events

Sponsored by Valve, this latest release of the Open Source project which enables interaction with traditional desktop environments, such as GNOME and KDE, in VR, brings the largest amount of changes yet, with many new features and architectural improvements.

xrdesktop 0.14 with OpenXR support is here!

WirePlumber, the PipeWire session manager

May 07, 2020 by George Kiagiadakis  |   Blog

An in-depth look at WirePlumber, the modular and extensible session manager for PipeWire that brings advanced device management, policy control and security enforcement capabilities.

WirePlumber, the PipeWire session manager

Service process and out of process compositing in Monado

April 30, 2020 by Lubosz Sarnecki  |   News & Events

A new monado-service binary and out of process compositor has landed in Monado, the fully Open Source OpenXR runtime for Linux! Here's a demo of the compositor's new abilities running with the new Blender OpenXR VR Session.

Service process and out of process compositing in Monado

Reducing the size of a Rust GStreamer plugin

April 28, 2020 by Guillaume Desmottes  |   Blog

With Rust gaining traction among the GStreamer community as an alternative to C to write applications and plugins, we began wondering, could the size of such Rust plugins be a problem for embedded systems?

Reducing the size of a Rust GStreamer plugin

From Bifrost to Panfrost - deep dive into the first render

April 23, 2020 by Alyssa Rosenzweig  |   Blog

The Panfrost project building a free, Open Source graphics driver for modern Mali GPUs has reached a new milestone: the first 3D render, including basic texture support, on a Bifrost chip (Mali G31)!

From Bifrost to Panfrost - deep dive into the first render

Say hello to the newest Collaborans!

April 21, 2020 by Erica Ryoo  |   News & Events

In these times of disruption and uncertainty, how about some positive news for a change? Let's take a moment to celebrate the newest members of our engineering and administration teams: Mylène, Christopher, Melissa, Ricardo and Leandro!

Say hello to the newest Collaborans!

Alyssa Rosenzweig receives Google Open Source Peer Bonus

April 20, 2020 by Mark Filion  |   Blog

Google Open Source has announced their 2020 first quarter Google Open Source Peer Bonus winners, and Alyssa Rosenzweig, Software Engineer at Collabora, is among the recipients!

Alyssa Rosenzweig receives Google Open Source Peer Bonus

Using syzkaller, part 2: Detecting programming bugs in the Linux kernel

April 17, 2020 by Andre Almeida  |   Blog

In my previous blog post, we discussed the importance of testing, what is fuzzing, and how the syzkaller fuzzes the kernel in order to find bugs. Now, let’s install the tool and starting using it to improve our code base.

Using syzkaller, part 2: Detecting programming bugs in the Linux kernel

Open Source software releases: Q1 2020 recap

April 14, 2020 by Mark Filion  |   Blog

Open Source software development thrives on remote collaboration, and continues to do so in 2020, with multiple projects announcing releases in the first quarter.

Open Source software releases: Q1 2020 recap

Clean, reliable setup for dependency installation

April 10, 2020 by Pekka Paalanen  |   Blog

When you work on a piece of software, you usually want to be able to build and test it manually on your local system, but without compromising your system or destabilizing the distribution provided software.

Clean, reliable setup for dependency installation

Landing a new syscall, part 1: What is futex?

February 08, 2022 by André Almeida  |   Blog

Over the past 18 months, we have been on a roller-coaster ride developing futex2, a new set of system calls. As part of this effort, the futex_waitv() syscall has now landed in Linux 5.16. But what exactly is futex?

Landing a new syscall, part 1: What is futex?

Writing an open source GPU driver - without the hardware

January 27, 2022 by Alyssa Rosenzweig  |   Blog

Until now, no Valhall devices (Mali-G57, Mali-G78) ran mainline Linux - whilst this made driver development obviously difficult, there’s no better time to write drivers than before the devices even get into the hands of end users.

Writing an open source GPU driver - without the hardware

A Pixel's Color & new documentation repository

January 25, 2022 by Pekka Paalanen  |   Blog

My work on Wayland and Weston color management and HDR support has been full of learning new concepts and terms. Many of them are crucial for understanding how color works, and what the values in a pixel actually mean.

A Pixel's Color & new documentation repository

Wine on Wayland year-end update: improved functionality & stability

December 22, 2021 by Alexandros Frantzis  |   Blog

It has been just over a year since we first announced our effort to implement a Wayland driver for Wine. Here's a recap of what has been done since then to improve both the functionality and stability of the driver.

Wine on Wayland year-end update: improved functionality & stability

Venus on QEMU: Enabling the new virtual Vulkan driver

November 26, 2021 by Antonio Caggiano  |   Blog

A step-by-step guide on how to enable 3D acceleration of Vulkan applications in QEMU through the new Venus experimental Vulkan driver for VirtIO-GPU with a local development environment.

Venus on QEMU: Enabling the new virtual Vulkan driver

Run your own CI pipeline with GStreamer's new monorepo

October 26, 2021 by Xavier Claessens  |   Blog

Maintaining a non-trivial set of GStreamer patches can be tricky. Thanks to the recent move to a single, unified git repo, you can now easily run a GStreamer continuous integration pipeline on your own GitLab instance. Here's how.

Run your own CI pipeline with GStreamer's new monorepo

Improving test coverage for cameras in KernelCI

October 08, 2021 by Nícolas F. R. A. Prado  |   Blog

Earlier this year, I joined Collabora as an intern to work on improving testing in libcamera and automating it through KernelCI. Having recently completed the internship, here's a look back at this experience and what was accomplished.

Improving test coverage for cameras in KernelCI

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

Meet wxrd, a standalone Wayland compositor for xrdesktop

December 20, 2021 by Christoph Haag  |   News & Events

The Linux desktop in VR goes headless! Introducing wxrd, a standalone Wayland compositor for xrdesktop based on wlroots, with minimal dependencies.

Meet wxrd, a standalone Wayland compositor for xrdesktop

Open Source in Japan, virtually

December 08, 2021 by Mark Filion  |   News & Events

A year of online conferences that began with linux.conf.au will end on a high note next week as Collaborans present three talks at Open Source Summit Japan + Automotive Linux Summit 2021. Join us!

Open Source in Japan, virtually

Kernel 5.15: A small but mighty Halloween release

November 10, 2021 by Sebastian Reichel  |   News & Events

It might be smaller than the last few kernels, but with well above 10,000 non-merge changes, the latest Linux kernel release still packs a punch. Released on October 31, kernel 5.15 brings lots of exciting new features.

Kernel 5.15: A small but mighty Halloween release

WirePlumber in Fedora 35

November 02, 2021 by George Kiagiadakis  |   News & Events

Today marks a very exciting day as Fedora 35 has now been released, and with it comes WirePlumber as the default session manager for PipeWire! Under development by Collabora since 2019, WirePlumber has now entered the linux desktop space.

WirePlumber in Fedora 35

Open Source Summit + Embedded Linux Conference 2021

September 24, 2021 by Mark Filion  |   News & Events

Collaborans will be actively participating in next week's activities with seven talks on topics including Rust build scripts, embedded deep learning on GStreamer, HEVC decoding on mainline Linux, PipeWire and WirePlumber, and more.

Open Source Summit + Embedded Linux Conference 2021

Panfrost achieves OpenGL ES 3.1 conformance on Mali-G52

September 21, 2021 by Alyssa Rosenzweig  |   News & Events

This important milestone is a step forward for the open source driver, as it now certifies Panfrost for use in commercial products containing Mali G52 and paves the way for further conformance submissions on other Mali GPUs.

Panfrost achieves OpenGL ES 3.1 conformance on Mali-G52

Generate a minimal GStreamer build, tailored to your needs

September 16, 2021 by Stéphane Cerveau  |   News & Events

GStreamer can be tricky to ship in a constrained device. Thanks to a partnership with Huawei, you can now use gst-build to generate a minimal GStreamer build, tailored to a specific application, or set of applications. Here's how.

Generate a minimal GStreamer build, tailored to your needs

Kernel 5.14: 30 years in the making and still improving

September 07, 2021 by Nícolas F. R. A. Prado  |   News & Events

With an ever-increasing interest in more modern hardware support, and a more reliable kernel that is thoroughly tested, contributions by Collabora's developers continue to help make this a reality for the Linux kernel.

Kernel 5.14: 30 years in the making and still improving

Linaro Virtual Connect - Fall 2021

September 01, 2021 by Mark Filion  |   News & Events

September's busy conference schedule kicks off next week with the Fall edition of Linaro Virtual Connect. Join us as we look at how to master your PipeWire streams with WirePlumber, and de-mystify GFX virtualization with VirGL!

Linaro Virtual Connect - Fall 2021

Reverse-engineering the Mali G78

July 20, 2021 by Alyssa Rosenzweig  |   News & Events

After a month of reverse-engineering the Arm Mali G78, we’re excited to release documentation on the Valhall instruction set, available as a PDF, as well as a Valhall assembler and disassembler to be used as a reverse-engineering aid.

Reverse-engineering the Mali G78

Kernel 5.13: Growing team and KernelCI hackfest

July 08, 2021 by Gabriel Krisman Bertazi  |   News & Events

Collabora's team working directly on the Linux kernel is growing. Collaborans continue to expand on their efforts to close the gap between hardware support on vendor trees and mainline.

Kernel 5.13: Growing team and KernelCI hackfest

A very successful first KernelCI hackfest

June 21, 2021 by Shreeya Patel  |   News & Events

Earlier this month, Collabora took part in the very first KernelCI hackfest, initiated as a joint effort with the Google Chrome OS team. Here's a look at what led to our participation and what was accomplished.

A very successful first KernelCI hackfest

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