I have written an application which reads from a webcam and processes the frames using OpenCV on linux. Now I want to pipe the output of my application to a virtual webcam that has been created by the V4L2loopback module so other applications are able to read it. I have written the application using C. I am not sure how to approach doing this. Could you please give me any hints?
I have found an answer in the old V4L2loopback module's page on Google code.
http://code.google.com/p/v4l2loopback/source/browse/test.c
newer link: https://github.com/umlaeute/v4l2loopback/blob/master/examples/test.c
This has helped me so far just to write to the device.
来源:https://stackoverflow.com/questions/11067588/how-to-write-pipe-to-a-virtual-webcam-created-by-v4l2loopback-module