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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

Hello Amsterdam!

February 08, 2017 by Mark Filion  |   News and Events

On February 8 & 9, Collabora will be attending Integrated Systems Europe 2017, the world's largest tradeshow dedicated to professional AV and electronic systems integration, taking place at the Amsterdam RAI.

Hello Amsterdam!

Collabora at FOSDEM 2017

January 31, 2017 by Mark Filion  |   News and Events

We're headed to Brussels, Belgium for FOSDEM 2017, the two-day event organized by volunteers to promote the widespread use of free and open source software.

Collabora at FOSDEM 2017

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

GStreamer meets HotDoc

November 29, 2016 by Mark Filion  |   News and Events

Some exciting news today as GStreamer launches its redesigned documentation site, complete with dynamic navigation, search function and new tutorials. This new iteration is powered by HotDoc, a tool created by Collabora's Mathieu Duponchelle!

GStreamer meets HotDoc

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

Collabora contributions to GStreamer 1.10 - Part 2

November 03, 2016 by Olivier Crête  |   Blog

In the first part of my review of Collabora's participation in GStreamer 1.10, I discussed the work done by Guillaume & Nicolas around leak tracing, acoustic echo cancellation, Wayland, V4L, etc. Today, I'll go over the contributions from the rest of…

Collabora contributions to GStreamer 1.10 - Part 2

Collabora contributions to GStreamer 1.10

November 02, 2016 by Olivier Crête  |   Blog

Yesterday, we celebrated the release of GStreamer 1.10, the culmination of 7 months of very hard work from the GStreamer community. Collabora's multimedia team is extremely proud of our contributions to this new major feature release.

Collabora contributions to GStreamer 1.10

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

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

MiniDebConf Cambridge 2023

November 21, 2023 by Kara Bembridge  |   News & Events

This week, the Debian project takes over Cambridge as MiniDebConf kicks off right in our own British backyard! Organized by Debian project members, MiniDebConfs aim to achieve similar objectives to those of the annual Debian conference, DebConf.

MiniDebConf Cambridge 2023

NVK reaches Vulkan 1.0 conformance

November 20, 2023 by Faith Ekstrand  |   News & Events

As of today, NVK is now an officially conformant implementation of the Vulkan 1.0 API on NVIDIA Turing hardware. This is the first time any Nouveau driver has gotten the Khronos conformance badge on any API.

NVK reaches Vulkan 1.0 conformance

Patch Ready for Linux Plumbers 2023

November 09, 2023 by Kara Bembridge  |   News & Events

To ensure the Linux kernel is running smoothly, it requires maintenance from a variety of levels. Those working on the lower levels, or the plumber layers, of the kernel will have a chance to convene next week at the annual Linux Plumbers Conference.

Patch Ready for Linux Plumbers 2023

Benchmarking machine learning frameworks

November 02, 2023 by Vineet Suryan  |   News & Events

MLBench enables developers and maintainers to effortlessly gauge how their frameworks perform compared to other implementations, prior code versions, or across different boards, with respect to both runtime performance and other metrics.

Benchmarking machine learning frameworks

Kernel 6.6: Long-awaited features and enhanced hardware support

October 31, 2023 by Laura Nao  |   News & Events

Linux Kernel 6.6 has arrived, bringing a significant amount of new features and performance enhancements. Collabora has actively contributed many patches, including work on MediaTek and Rockchip.

Kernel 6.6: Long-awaited features and enhanced hardware support

X.Org Developer's Conference 2023

October 12, 2023 by Kara Bembridge  |   News & Events

The fall conference season continues next week with the X.Org Developer's Conference, taking place from October 17 to 19 in A Coruna, Spain. Sponsored by Collabora, this event brings together developers with an interest in open graphics.

X.Org Developer's Conference 2023

Pressing play on GStreamer Conference 2023

September 21, 2023 by Kara Bembridge  |   News & Events

Sunny Spain will have multimedia developers on speed dial next week for the 11th edition of the GStreamer Conference, taking place at the Palexco Convention Centre in A Coruña from September 25 to 26.

Pressing play on GStreamer Conference 2023

Perfecting Open Source Recipes in Paris

September 19, 2023 by Kara Bembridge  |   News & Events

The world-renowned culinary scene in The City of Light will be getting a pack of different types of chefs next week for Kernel Recipes and Embedded Recipes. Kernel Recipes kicks off on September 25, then Embedded Recipes from September 28 to 29.

Perfecting Open Source Recipes in Paris

Empowering Open Source at IBC 2023

September 11, 2023 by Kara Bembridge  |   News & Events

Collabora is headed to Amsterdam! This year, we will be showcasing some of our recent work on the DAB protocol, as well as the software integration of LCEVC, MPEG's novel enhancement codec, into the GStreamer multimedia framework.

Empowering Open Source at IBC 2023

Monado SLAM datasets now available

September 11, 2023 by Mateo de Mayo  |   News & Events

The Monado SLAM datasets (MSD) are egocentric visual-inertial SLAM datasets recorded to improve the Basalt-based inside-out tracking component of the Monado project.

Monado SLAM datasets now available

Video codecs: Adding AV1 stateless video decoder support to Linux

September 07, 2023 by Benjamin Gaignard  |   News & Events

The latest mainline Linux kernel (v6.5) includes 22 patches that enable support for the AV1 uAPI and for two stateless video decoders: one for the Rockchip RK3588 and one for MT8195, a MediaTek SoC.

Video codecs: Adding AV1 stateless video decoder support to Linux

Linux kernel 6.5: USB4v2 and Wifi7 have arrived

August 30, 2023 by Adrian Larumbe  |   News & Events

The 6.5 release is here and it comes with many changes. As is often the case, Collabora has been actively involved in the submission of patches, mostly in the task of hardware enablement for Mediatek and Rockchip SoCs.

Linux kernel 6.5: USB4v2 and Wifi7 have arrived

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