Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Raspberry Pi for Secret Agents

You're reading from   Raspberry Pi for Secret Agents Turn your Raspberry Pi into your very own secret agent toolbox with this set of exciting projects! 

Arrow left icon
Product type Paperback
Published in Apr 2013
Publisher Packt
ISBN-13 9781849695787
Length 152 pages
Edition 1st Edition
Concepts
Arrow right icon
Author (1):
Arrow left icon
Stefan Sjogelid Stefan Sjogelid
Author Profile Icon Stefan Sjogelid
Stefan Sjogelid
Arrow right icon
View More author details
Toc

Table of Contents (12) Chapters Close

Raspberry Pi for Secret Agents
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Getting Up to No Good FREE CHAPTER 2. Audio Antics 3. Webcam and Video Wizardry 4. Wi-Fi Pranks – Exploring your Network 5. Taking your Pi Off-road Index

Setting up your camera


Go ahead, plug in your webcam and boot up the Pi; we'll take a closer look at what makes it tick.

Note

If you experimented with the dwc_otg.speed parameter to improve the audio quality during the previous chapter, you should change it back now by changing its value from 1 to 0, as chances are that your webcam will perform worse or will not perform at all, because of the reduced speed of the USB ports.

Meet the USB Video Class drivers and Video4Linux

Just as the Advanced Linux Sound Architecture (ALSA) system provides kernel drivers and a programming framework for your audio gadgets, there are two important components involved in getting your webcam to work under Linux:

  • The Linux USB Video Class (UVC) drivers provide the low-level functions for your webcam, which are in accordance with a specification followed by most webcams produced today.

  • Video4Linux (V4L) is a video capture framework used by applications that record video from webcams, TV tuners, and other video-producing...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at €18.99/month. Cancel anytime