Reachy Mini x Strands Agent on Jetson Thor - Part 14: The Media Bus — One Owner per Device, Fan Out to Many
· 10 min read
This is Part 14 of the series. Several features now want the camera — face tracking, the idle watcher, Cosmos vision, clip recording — and the voice loop wants the mic. But /dev/video0 and the ALSA mic are single-opener devices: once one process holds either, no one else can. Until now everything that needed a device had to live as a thread inside the one process that opened it.