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Permissively-licensed MTP device implementation

May 16, 2019 by Andrzej Pietrasiewicz  |   Blog

Introducing cmtp-responder - a permissively licensed Media Transfer Protocol (MTP) responder implementation which allows embedded devices to provide MTP services and supports a core set of MTP operations.

Permissively-licensed MTP device implementation

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

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

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

Deep dive into OpenGL over DirectX layering

July 09, 2020 by Louis-Francis Ratté-Boulianne  |   Blog

Earlier this year, we announced a new project with Microsoft: the implementation of OpenCL & OpenGL to DirectX translation layers. Here's the latest on this work, including the steps taken to improve the performance of the OpenGL-On-D3D12 driver.

Deep dive into OpenGL over DirectX layering

Using syzkaller, part 4: Driver fuzzing

June 26, 2020 by Ricardo Cañuelo Navarro  |   Blog

Syzkaller is much needed tool for Linux kernel testing and debugging. With some work, it can also be enhanced to find bugs in specific drivers, such as V4L2. Here's how.

Using syzkaller, part 4: Driver fuzzing

Cross building Rust GStreamer plugins for the Raspberry Pi

June 23, 2020 by Guillaume Desmottes  |   Blog

Previously, we discussed about how Rust can be a great language for embedded programming. In this article, we'll explain an easy setup to cross build Rust code depending on system libraries, a common requirement when working on embedded systems.

Cross building Rust GStreamer plugins for the Raspberry Pi

Generating MPEG-DASH streams for Open Source adaptive streaming with GStreamer

June 12, 2020 by Stéphane Cerveau  |   Blog

Adaptive streaming is a technique to provide flexibility and scalability by offering variable bit-rate streams to the client. Here's a quick guide on how to generate a MPEG-DASH stream (the most completely adaptive streaming technique) using GStreamer.

Generating MPEG-DASH streams for Open Source adaptive streaming with GStreamer

Bifrost meets GNOME: Onward & upward to zero graphics blobs

June 05, 2020 by Alyssa Rosenzweig  |   Blog

With only free software, a Mali G31 chip can now run Wayland compositors with zero-copy graphics, including GNOME 3. We can run every scene in glmark2-es2, 3D games like Neverball can be played, and video players mpv and Kodi are now supported.

Bifrost meets GNOME: Onward & upward to zero graphics blobs

Using regmaps to make Linux drivers more generic

May 27, 2020 by Adrian Ratiu  |   Blog

Device drivers can support more revisions and SoC platforms by abstracting away specific hardware interface layouts. Let's examine a specific instance of this process, namely the effort to make the MIPI DSI host controller driver more generic.

Using regmaps to make Linux drivers more generic

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

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

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

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

GStreamer 1.20: Embedded & WebRTC lead the way

February 18, 2022 by Olivier Crête  |   News & Events

At the forefront of contributors for this latest release, our team's work focused on two areas in which we believe GStreamer shines the brightest: embedded systems, and network streaming, in particular WebRTC.

GStreamer 1.20: Embedded & WebRTC lead the way

FOSDEM 2022

February 01, 2022 by Kara Bembridge  |   News & Events

Kicking off in a matter of days, this jam-packed weekend will host over 50 devrooms and nearly 700 talks including an in-depth look at Mobian: an open-source project aimed at bringing Debian GNU/Linux to mobile devices.

FOSDEM 2022

Kernel 5.16: A new release for a new year

January 20, 2022 by André Almeida  |   News & Events

With kernel 5.16, the community has once again produced a release full of great features, including two projects that had been in development for some time by our kernel team: the new futex syscall and the new fanotify event.

Kernel 5.16: A new release for a new year

First up in 2022: linux.conf.au!

January 11, 2022 by Mark Filion  |   News & Events

The new year has only just begun, and already our first conference of 2022 is on the horizon. Join us at linux.conf.au, as we discuss bringing WebM Alpha support to GStreamer, and provide a status update on the futex2 syscall.

First up in 2022: linux.conf.au!

A growth year for upstream kernel contributions

December 22, 2021 by Gustavo Padovan  |   News & Events

With over 350 patches authored and nearly 200 reviewed and tested in multiple subsystems, 2021 was a great year for Linux kernel development at Collabora. Here is a look at some of our achievements during the year.

A growth year for upstream kernel contributions

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

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