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Integrating libcamera into PipeWire

September 11, 2020 by Raghavendra Rao  |   Blog

PipeWire continues to evolve with the recent integration of libcamera, a library to support complex cameras. In this blog post, I'll explain why libcamera exists, what it does, and how we integrated it in PipeWire.

Integrating libcamera into PipeWire

Pushing pixels to your Chromebook

August 31, 2020 by Emil Velikov  |   Blog

A high-level introduction of the Linux graphics stack, how it is used within ChromeOS, and the work done to improve software rendering (while simultaneously improving GPU rendering by reducing the boilerplate needed in applications).

Pushing pixels to your Chromebook

Using the Linux kernel's Case-insensitive feature in Ext4

August 27, 2020 by Gabriel Krisman Bertazi  |   Blog

Last year, a (controversial) feature was added to the Linux kernel to support optimized case-insensitive file name lookups in the Ext4 filesystem. Here's a look at why this was merged, what improvements have been made since, and how to put it to work.

Using the Linux kernel's Case-insensitive feature in Ext4

One week, two events: DebConf20 & Linux Plumbers Conference

August 24, 2020 by Mark Filion  |   News & Events

August ends on a high note with two virtual events this week: DebConf20, Debian's annual conference, and Linux Plumbers Conference, the premier event for developers working at all levels of the Linux kernel's plumbing layer and beyond.

One week, two events: DebConf20 & Linux Plumbers Conference

Panfrost performance counters with Perfetto

August 21, 2020 by Antonio Caggiano  |   Blog

We have now integrated Mali GPU hardware counters supported by Panfrost with Perfetto's tracing SDK, unlocking all-in-one graphics-aware profiling on Panfrost systems!

Panfrost performance counters with Perfetto

High bitrate video streaming with GStreamer's RTP elements

August 20, 2020 by Antonio Ospite  |   Blog

Key performance improvements and fixes to GStreamer's RTP stack have landed in GStreamer 1.18, due in the coming months. The latest enhancements provide an important boost in throughput, opening the gate to high bitrate video streaming.

High bitrate video streaming with GStreamer's RTP elements

Understanding computer vision & AI, part 1

August 13, 2020 by Marcus Edel  |   Blog

Following our recent presentation at OSSummit, many showed interest in learning more about solving real-world problems with computer vision. Here is a new blog series, on computer vision, object detection, and building a system on the edge.

Understanding computer vision & AI, part 1

Testing Weston DRM/KMS backends with virtme and VKMS

August 07, 2020 by Leandro Ribeiro  |   Blog

Recent work in Weston, the industry-standard Wayland compositor, has enabled DRM/KMS backends to be tested in the absence of real hardware, enabling more battle testing of corner-case and error conditions within automated testing frameworks.

Testing Weston DRM/KMS backends with virtme and VKMS

Kernel 5.8: Collabora's biggest & most significant contributions yet!

August 05, 2020 by Dafna Hirschfeld  |   News & Events

The ability for a relatively small software consultancy to contribute at this level demonstrates a fantastic improvement in vendors' mindset when it comes to working Open First and providing mainline support out-of-box as early as possible.

Kernel 5.8: Collabora's biggest & most significant contributions yet!

Lighthouse positional tracking in Monado with libsurvive

July 17, 2020 by Christoph Haag  |   News & Events

HTC Vive (Pro) and Valve Index hardware users can now experiment with positional tracking in Monado, thanks to the implementation of a libsurvive driver using the libsurvive library developed by Charles Lohr, David Berger and many contributors.

Lighthouse positional tracking in Monado with libsurvive

WirePlumber 0.3 released, now ready for the desktop

July 16, 2020 by George Kiagiadakis  |   News & Events

It is with great pleasure that we announce the availability of WirePlumber (the PipeWire session manager) version 0.3.0. This release brings support for desktop use cases and is a working drop-in replacement for PipeWire's example session manager.

WirePlumber 0.3 released, now ready for the desktop

An introduction to Linux kernel initcalls

July 14, 2020 by Mylène Josserand  |   Blog

Initcalls, which serve to call functions during boot, were implemented early on in the development of the Linux Kernel. Read on as we take a closer look, including their purpose, their usage, ways to debug them (using initcall_debug or FTrace), and more.

An introduction to Linux kernel initcalls

Kernel debugging with QEMU: An overview of tools available

March 13, 2017 by Frédéric Dalleau  |   Blog

Once you've setup a virtual machine in QEMU using debootstrap, there are a number of tools available for testing, tracing and debugging, such as Kmemleak for memory leaks, GDB (GNU Debugger), ftrace et dynamic_debug.

Kernel debugging with QEMU: An overview of tools available

Quick hack: Removing the Chromebook Write-Protect screw

March 08, 2017 by Robert Foss  |   Blog

Before being able to write firmware data to any production Chromebook device, the Write-Protect screw has to be removed.

Quick hack: Removing the Chromebook Write-Protect screw

A flurry of open source graphics milestones

March 01, 2017 by Daniel Stone  |   Blog

The past few months have been busy ones on the open-source graphics front, bringing with them Wayland 1.13, Weston 2.0 and Mesa 17.0. Here's a look at some of these developments, including Collabora's behind-the-scenes work on performance improvement.

A flurry of open source graphics milestones

Quick hack: Precompiling APK files during Android AOSP build

February 23, 2017 by Robert Foss  |   Blog

How to create your custom Android image, and APK app(s), all at once.

Quick hack: Precompiling APK files during Android AOSP build

Quick hack: Setting up a ChromiumOS dev environment

February 16, 2017 by Robert Foss  |   Blog

How to set up a fully functional ChromiumOS development environment on actual Chromebook hardware.

Quick hack: Setting up a ChromiumOS dev environment

Optimizing graphics memory bandwidth with compression and tiling: Notes on DRM format modifiers

February 09, 2017 by Varad Gautam  |   Blog

Over the past few weeks, I have been working for Collabora on plumbing DRM format modifier support across a number of components in the graphics stack. This post documents the work and the related consequences/implications.

Optimizing graphics memory bandwidth with compression and tiling: Notes on DRM format modifiers

Mainline Explicit Fencing - Part 3

January 26, 2017 by Gustavo Padovan  |   Blog

In the last two articles we talked about how Explicit Fencing can help the graphics pipeline in general and what happened on the effort to upstream the Android Sync Framework. Now on the third and final post of this series we will go through the Explicit…

Mainline Explicit Fencing - Part 3

A look at the Chamelium board

January 24, 2017 by Tomeu Vizoso  |   Blog

Last month I gave a short talk about the Chamelium board from the ChromeOS team, a board that is getting more and more usage outside of Google as it can help you automate the testing of your display (and not only!) code and hardware.

A look at the Chamelium board

Setting up QEMU-KVM for kernel development

January 16, 2017 by Frédéric Dalleau  |   Blog

A look at the fundamentals of building and booting a kernel in QEMU using debootstrap, so you have the needed infrastructure to test your kernel changes in QEMU.

Setting up QEMU-KVM for kernel development

Collabora Contributions to Linux Kernel 4.9

December 14, 2016 by Gustavo Padovan  |   Blog

Linux Kernel 4.9 was released this week and once more Collabora developers took part on the kernel development cycle. This time we contributed 36 patches by 11 different developers, our highest number of single contributors in a kernel release ever. Remember…

Collabora Contributions to Linux Kernel 4.9

A tale of cylinders and shadows

November 22, 2016 by Gustavo Noronha  |   Blog

Our ongoing work on improving WebKitGTK+ performance brought us to take a closer look as to why GTK+ was experiencing significant speed issues when used with Wayland and HiDPI screens, revealing the root cause to be within the lower level toolkit.

A tale of cylinders and shadows

How continuous integration can help you keep pace with the Linux kernel

November 08, 2016 by Tomeu Vizoso  |   Blog

Almost all of Collabora's customers use the Linux kernel on their products. Often they will use the exact code as delivered by the SBC vendors and we'll work with them in other parts of their software stack. But it's becoming increasingly common for our…

How continuous integration can help you keep pace with the Linux kernel

Kernel 6.0: Start of a new series and dawn of Rust

October 14, 2022 by Shreeya Patel  |   News & Events

Collabora's contributions include mainlining the HEVC uAPI, adding VirtIO documentation, upstreaming MediaTek smartphones, and adding support for two new Chromebooks and for the Mali-G57 GPU in the Panfrost kernel driver.

Kernel 6.0: Start of a new series and dawn of Rust

HEVC uAPI mainlined

October 06, 2022 by Benjamin Gaignard  |   News & Events

The release of Linux 6.0 earlier this week brought a significant milestone: the H.265/HEVC user-space API was mainlined, the result of more than two years of efforts by our engineering team.

HEVC uAPI mainlined

Introducing NVK

October 04, 2022 by Faith Ekstrand  |   News & Events

Say hello to a brand new, open-source Vulkan driver for NVIDIA hardware in Mesa, written almost entirely from scratch using the new official headers from NVIDIA.

Introducing NVK

Weston 11.0: what's new, what's next

September 29, 2022 by Marius Vlad  |   News & Events

Announced earlier this week, Weston 11.0 brings a number of highlights including optimizations in the DRM-backend, color management infrastructure code and multiple RDP improvements.

Weston 11.0: what's new, what's next

Three conferences for the price of none!

September 29, 2022 by Kara Bembridge  |   News & Events

This year's X. Org Developer's Conference (XDC) is teaming up with WineConf and FOSS XR in Minneapolis at the University of St. Thomas' Opus Hall for a jam-packed three day event.

Three conferences for the price of none!

A team that grows together, builds together

September 27, 2022 by Kara Bembridge  |   News & Events

Adding a variety of expertise from across the globe, the departments of Core, Multimedia, Kernel, XR, People Operations, and DevOps now have more hands on deck. Discover a snapshot of our newest teammates!

A team that grows together, builds together

A busy, open source week in Dublin!

September 12, 2022 by Mark Filion  |   News & Events

Mere weeks after the debut of Open Source Summit Latin America, Dublin continues the collaborative momentum with the 2022 hybrid editions of Linux Plumbers Conference and Open Source Summit Europe!

A busy, open source week in Dublin!

Open source machine learning at IBC 2022

September 06, 2022 by Kara Bembridge  |   News & Events

Showcasing two new software demonstrations featuring machine learning, including backend video compression that runs on Panfrost, and a data quality assurance tool designed to integrate into the annotation pipeline.

Open source machine learning at IBC 2022

Last chance to submit to FOSS XR!

August 30, 2022 by Frédéric Plourde  |   News & Events

Be part of the FOSSXR lineup by submitting your talk by September 5th, 2022. That means there's one week left for all you AR and VR enthusiasts and industry movers to share your exciting XR projects/news/demos with the world.

Last chance to submit to FOSS XR!

Fostering connections at Open Source Summit Latin America

August 16, 2022 by Kara Bembridge  |   News & Events

A magnet for open source supporters, the very first edition of Open Source Summit Latin America is opening its virtual doors. This new annual conference takes place online from August 23 to 24 with 5 talks from Collabora's very own!

Fostering connections at Open Source Summit Latin America

Kernel 5.19: Probably the final release of the 5.x series

August 02, 2022 by Cristian Ciocaltea  |   News & Events

As usual, there are quite a few changes merged into the mainline kernel. Let's take a look at some of the contributions by Collabora's kernel team!

Kernel 5.19: Probably the final release of the 5.x series

Weston 10.0.1 - a bug-fix release

July 05, 2022 by Marius Vlad  |   News & Events

The latest release of Weston was made on February 1, 2022. Meanwhile, a few bugs were discovered and we decided to do a bug-fix release, which we haven't had in several years.

Weston 10.0.1 - a bug-fix release

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