V4l2 : difference between : Enque, Deque and Queue(ing) of the buffer? <p>I am a noob in <strong>v4l2</strong> and tryign to find out the difference bweeten the various ioctl calls made during the camera image capture. I am following this <a href="http://linuxtv.org/downloads/presentations/summit_jun_2010/20100206-fosdem.pdf" rel="nofollow">pdf</a> from the linuxtv org site I wanted to know the difference between the following : </p> <p><strong>Query,Enque, Deque and Queue(ing)</strong> of the buffer.Is there is a particular sequence in fetching the raw data from the camera .Does the sequence varies in case of streaming and capture mode?</p> <p>Can any one plz explain. Rgds, Rp</p>