PINE64 PinePhone Back Camera 720p On-Screen Preview

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Shared January 24, 2020

The purpose of the video is to show off recent low level kernel driver work, and work offloading from CPU, not a polished UI.



I've used Jernej's recent A64/A83T rotation engine work (https://github.com/jernejsk/linux-1/c...) to write a quick demo app that captures frames from the back camera, rotates them via a rotation engine, scales them to fill the 1440x720 screen and dsiplays them on the display with the correct orientation.


All this happens at 30fps with almost 0 CPU load and without using a GPU.