Module src.streaming.io.webcam_writer

Module for writing to a virtual webcam that can be used anywhere.

This module only runs on linux machines as it requires that the external v4l2loopback-utils package is installed and that the v4l2loopback driver is inserted into the kernel. This also means the begin and end methods are empty and just pass.

Classes

class WebcamWriter (interface: int, res: Tuple[int, int])

An instance is made with a webcam interface number and resolution.

Looks for v4l2loopback devcies on /dev/videoN, where N is the interface number

Contains methods for starting and stopping video output and a method that takes in a image and writes it as a frame in videobuffer.

Methods

def write(self, img: numpy.ndarray) ‑> NoneType

Writes image to videobuffer

Takes input image, mirrors it and writes it to loopback device

Args

img

image buffer as numpy ndarray.