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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

Embedded Linux & Open Source take the virtual stage

June 18, 2020 by Mark Filion  |   News & Events

Collabora will be presenting on five separate occasions during the virtual editions of Embedded Linux Conference North America and Open Source Summit North America, taking place later this month.

Embedded Linux & Open Source take the virtual stage

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

Machine Learning with Etnaviv and OpenCL

December 15, 2022 by Italo Nicola  |   Blog

Machine learning is increasingly seeing more applications and it's important to have FOSS options to accelerate such workloads. With that in mind, we began an effort earlier this year to get a TFLite model running on a VIM3 NPU using Etnaviv and OpenCL.

Machine Learning with Etnaviv and OpenCL

Tracing stateless video hardware decoding in V4L2

December 02, 2022 by Deborah Brouwer  |   Blog

Earlier this year, I joined Collabora for a six-month internship to learn how V4L2 (Video4Linux2) supports stateless video hardware decoding, and build a utility that traced and replayed stateless decoding from a userspace perspective.

Tracing stateless video hardware decoding in V4L2

From Lua to JSON: refactoring WirePlumber's configuration system

October 27, 2022 by Ashok Sidipotu  |   Blog

With the upcoming 0.5 release, WirePlumber's configuration system will be moving to a JSON syntax to define settings, bringing a more unified configuration approach across the PipeWire ecosystem.

From Lua to JSON: refactoring WirePlumber's configuration system

A look at Vulkan extensions in Venus

October 19, 2022 by Igor Torrente  |   Blog

Venus is a virtual Vulkan driver based on the Virtio-GPU protocol, which defines the serialization of Vulkan commands between guest and host. Here's a closer look at Venus, its components, and their relations in the context of extensions.

A look at Vulkan extensions in Venus

Carlafox, an open-source web-based CARLA visualizer

October 11, 2022 by Vineet Suryan  |   Blog

Taking one step towards democratizing the daunting task of dataset generation by making image synthesis and automatic ground truth data generation maintainable, cheaper, and more repeatable.

Carlafox, an open-source web-based CARLA visualizer

Open source machine learning for video compression

September 14, 2022 by Marcus Edel  |   Blog

Using open source software, Collabora has developed an efficient compression pipeline that enables a face video broadcasting system that achieves the same visual quality as the H.264 standard while only using one-tenth of the bandwidth.

Open source machine learning for video compression

Improving Vulkan graphics state tracking in Mesa

September 07, 2022 by Faith Ekstrand  |   Blog

Introducing new common code for Mesa Vulkan drivers to support a new Vulkan extension, making it easier for app and game authors to manage Vulkan state - and easier for our drivers too.

Improving Vulkan graphics state tracking in Mesa

Using a Raspberry Pi as a Bluetooth speaker with PipeWire

September 02, 2022 by Frederic Danis  |   Blog

Using PipeWire, WirePlumber and a Raspberry Pi, you can create an audio bridge between a Bluetooth® device and an analog speaker system, breathing new life into your old speakers.

Using a Raspberry Pi as a Bluetooth speaker with PipeWire

Introducing the r600/NIR back-end

July 07, 2022 by Gert Wollny  |   Blog

Adventures in NIR-land: the past, the present, and what's lies ahead for the native NIR back-end for Mesa's R600 driver.

Introducing the r600/NIR back-end

Adding secondary command buffers to PanVk

June 15, 2022 by Manas Chaudhary  |   Blog

Getting PanVk, an open source driver for Arm Mali Midgard and Bifrost GPUs, closer to conformancy by implementing one of the core Vulkan features: support for secondary command buffers.

Adding secondary command buffers to PanVk

Bridging the synchronization gap on Linux

June 09, 2022 by Faith Ekstrand  |   Blog

After fighting with the divide between implicit and explicit synchronization with Vulkan on Linux for over seven years, we may finally have some closure. We're not to synchronization nirvana quite yet, but this is an important step along the way.

Bridging the synchronization gap on Linux

Monado's hand tracking: hand-waving our way towards a first attempt

May 31, 2022 by Moses Turner  |   Blog

Optical hand tracking for XR has a bit of a reputation - getting training data, training neural nets, and deploying them in real-time, low-latency environments such as XR is every bit as hard as they say it is.

Monado's hand tracking: hand-waving our way towards a first attempt

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