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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

Kernel 5.7: Forging ahead, despite COVID-19

June 04, 2020 by Andrzej Pietrasiewicz  |   News & Events

This latest release is the first to contain development work accomplished amid the lockdown measures. Despite these significant changes, Collaborans have also been steadfast in their contributions, with multiple projects progressing.

Kernel 5.7: Forging ahead, despite COVID-19

Google Summer of Code 2020

June 01, 2020 by Mark Filion  |   News & Events

Coding hss begun for this year's Google Summer of Code (GSoC) projects, announced earlier last month. The 2020 edition selected 1,199 students from 66 countries, to work with 199 mentoring organizations over the course of the summer.

Google Summer of Code 2020

Monado OpenXR runtime development gaining momentum: version 0.2, multi-layer support & more!

May 29, 2020 by Jakob Bornecrantz  |   News & Events

With the excellent (online) edition of Augmented World Expo 2020 in full swing this week, what better time to announce version 0.2 of the Monado OpenXR runtime for Linux. It's been a very busy three months since the last Monado developer update!

Monado OpenXR runtime development gaining momentum: version 0.2, multi-layer support & more!

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

Laval Virtual: OpenXR master class in VR!

May 18, 2020 by Mark Filion  |   News & Events

A few weeks ago, Ryan Pavlik presented "Unifying Reality: Building Experiences with OpenXR", a master class on OpenXR, the open standard API for building VR and AR experiences that work across devices, now and into the future.

Laval Virtual: OpenXR master class in VR!

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

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

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

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

Monado OpenXR runtime developer update

February 25, 2020 by Jakob Bornecrantz  |   News & Events

Ever since announcing the project at GDC 2019, we have been working on improving the full open source XR stack to a usable state. Today, we are very happy to tag version 0.1 of the Monado OpenXR runtime for Linux!

Monado OpenXR runtime developer update

Low latency streaming of security video feeds with SRT and GStreamer

February 12, 2020 by Jakub Adam  |   News & Events

With the advent of 5G networks, it's now possible to stream high quality video in real-time with a very low latency that wasn't possible with the past generations of mobile networks.

Low latency streaming of security video feeds with SRT and GStreamer

Linux Kernel 5.5

January 30, 2020 by Sebastian Reichel  |   News & Events

With the 5.5 kernel released earlier this week, here's a detailed look at Collabora’s contributions, including work to improve upstream support of peripherals used together with the i.MX 6 family of processors.

Linux Kernel 5.5

FOSDEM 2020

January 23, 2020 by Mark Filion  |   News & Events

In less than 10 days, Collabora will be in Brussels to take part in this year's edition of FOSDEM! Come say hello, or catch one of the dozen talks (in the main track and 6 different devrooms) given by Collaborans!

FOSDEM 2020

Meet the newest Collaborans!

January 16, 2020 by Erica Ryoo  |   News & Events

What better way to start the new year than by highlighting the newest members of our engineering and administrative teams who joined in Q4 2019! Please join us in welcoming Antonio, Afonso, Narciso and Eleni!

Meet the newest Collaborans!

Linux Kernel 5.4

December 02, 2019 by Enric Balletbò i Serra  |   News & Events

Linus has released the 5.4 kernel and Collabora was once again a very active contributor with 12 Collaborans authoring 95 commits while also helping the kernel maintainers by contributing 124 Reviewed-by tags.

Linux Kernel 5.4

And the Collabora family keeps growing!

November 20, 2019 by Jassie Badion  |   News & Events

As we begin winding down 2019, it's time to take a moment to celebrate the new Collaborans who joined our various engineering and administrative teams in Q2 & Q3 this year!

And the Collabora family keeps growing!

GStreamer & automated testing in Lyon

October 30, 2019 by Mark Filion  |   News & Events

Following three days at ELCE, Collaborans are continuing their stay in the capital of France’s Auvergne-Rhône-Alpes region to take part the annual GStreamer Conference, as well as the Automated Testing Summit.

GStreamer & automated testing in Lyon

A new home for KernelCI

October 28, 2019 by Guillaume Tucker  |   News & Events

The KernelCI project, which powers kernelci.org with automated testing for the upstream Linux kernel, has found a new home after sailing through uncharted waters for over five years.

A new home for KernelCI

Embedded Linux Conference Europe 2019

October 25, 2019 by Mark Filion  |   News & Events

Next week, Collabora will be sponsoring, exhibiting & speaking at ELCE in Lyon, France. We'll be showcasing not one but two demos at our booth this year: arcade racing on a ROCK Pi 4 with Panfrost, and GStreamer on the Magic Leap One.

Embedded Linux Conference Europe 2019

Open graphics in Montreal

September 30, 2019 by Mark Filion  |   News & Events

Collabora is proud to be hosting in Montreal the 2019 edition of the X.Org Developer's Conference (XDC), the leading event for developers working on all things Open graphics, including the Linux kernel, Mesa, DRM, Wayland and X11.

Open graphics in Montreal

All the right ingredients in Paris

September 20, 2019 by Mark Filion  |   News & Events

Next week, Collaborans including Julian Bouzas and Enric Balletbò i Serra will be in Paris to participate in the 3rd edition of Embedded Recipes and 8th edition of Kernel Recipes

All the right ingredients in Paris

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Upcoming Events

Here are the online events we'll be attending in the coming weeks – join us!

Open Source Summit Japan

14-15 December, Online

Automotive Linux Summit

14-15 October, Online

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