Android, Native OpenGL/OpenMAX, Screen capture

Question

Use-case

Mirror Android Screen to PC using USB

Potential (Native) Implementation Approaches

1. Using Android Open-Source, modify screenrecord

Answer 1

The screenrecord that ships with Android 5.0 "Lollipop" can send raw H.264 over ADB. The command line looks like:

adb shell screenrecord --output-format=h264 - | 

A few details are on the bigflake page. I've used it to mirror the screen onto a Linux workstation, but unfortunately I didn't save the VLC/mplayer command lines. Some player suggestions are here.

You can try to do uncompressed frames (--output-format=raw-frames), but at decent frame rates that easily overwhelms the ADB connection, even if the screen is tiny.

Source code is here.