Edinburgh, Scotland, UK
October 21 & October 25 | Co-Located Events, Tutorials, & Workshops
October 22-24 | Conference
Find out more information for Open Source Summit + Embedded Linux Conference & OpenIoT Summit Europe 2018

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Tuesday, October 23 • 16:40 - 17:20
Complex Cameras on Linux - Mauro Carvalho Chehab, Samsung

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The media subsystem supports two types of camera devices:
  • "traditional" media hardware, supported via standard V4L2 API, via device nodes, called devnode-based drivers. On those hardware, image processing happens at the camera. Those are meant to be used by customer-based devices.
  • Media-controller based devices, supported by 3 sets of APIs: Media Controller, V4L2, and V4L2 subdevices. Those are meant to be used by SoC-based embedded devices. On those devices, image processing happens at the SoC.
  • Devnode-based drivers are supported by "standard" media applications, but right now, media-controller based devices require a special design application.
Along with this speech, we'll cover both types of camera hardware and describe a recent effort of making both compatible with standard camera applications.


Mauro Carvalho Chehab

Director - Open Source, Samsung Research Brazil
Mauro is the upstream maintainer of the Linux kernel media and EDAC subsystems, and also a major contributor for the Reliability Availability and Serviceability (RAS) subsystems. He is a KDE developer, where it maintains Kaffeine since 2016. Mauro also maintains Tizen on Yocto packages... Read More →

Tuesday October 23, 2018 16:40 - 17:20 BST
Lennox 2, Level -2