This document covers the Linux Kernel to Userspace API’s used by video and radio streaming devices, including video cameras, analog and digital TV receiver cards, AM/FM receiver cards, Software Defined Radio (SDR), streaming capture and output devices, codec devices and remote controllers.
A typical media device hardware is shown at Typical Media Device.
The media infrastructure API was designed to control such devices. It is divided into five parts.
It should also be noted that a media device may also have audio components, like mixers, PCM capture, PCM playback, etc, which are controlled via ALSA API. For additional information and for the latest development code, see: https://linuxtv.org. For discussing improvements, reporting troubles, sending new drivers, etc, please mail to: Linux Media Mailing List (LMML).