In order to correctly reproduce the colors encoded in a video (or a still image for that matter) you need to know the colorspace information associated with the video. But what exactly is a colorspace and what is the nformation that describes how color is encoded?...
Every modern multimedia-oriented ARM SoC usually has a number of display controllers, to drive a screen or an LCD panel, and a GPU, to provide 3D acceleration. The Linux kernel framework of choice to support these controllers is the DRM subsystem. This talk will walk...
The HDMI connector features a CEC (Consumer Electronics Control) pin that allows connected devices to detect and control one another. A new framework to handle CEC was added to the kernel in 2016. This talk describes the current state of the CEC support, how to...
The current userspace API for brightness control offered by /sys/class/backlight devices has various problems: 1. There is no way to map the backlight device to a specific display-output / panel 2. On x86 there can be multiple firmware + direct-hw-access methods for...
