Book Image

Mac Application Development by Example: Beginner's Guide

By : Robert Wiebe
Book Image

Mac Application Development by Example: Beginner's Guide

By: Robert Wiebe

Overview of this book

It's never been more important to have the ability to develop an App for Mac OS X. Whether it's a System Preference, a business app that accesses information in the Cloud, or an application that uses multi-touch or uses a camera, you will have a solid foundation in app development to get the job done.Mac Application Development by Example takes you through all the aspects of using the Xcode development tool to produce complete working apps that cover a broad range of topics. This comprehensive book on developing applications covers everything a beginner needs to know and demonstrates the concepts using examples that take advantage of some of the most interesting hardware and software features available.You will discover the fundamental aspects of OS X development while investigating innovative platform features to create a final product which take advantage of the unique aspects of OS X.Learn how to use Xcode tools to create and share Mac OS X apps. Explore numerous OS X features including iCloud, multi-touch trackpad, and the iSight camera.This book provides you with an illustrated and annotated guide to bring your idea to life using fundamental concepts that work on Mac.
Table of Contents (17 chapters)
Mac Application Development by Example Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

What is Quicktime Kit Capture?


Quicktime Kit (QTKit) is an Objective-C Mac OS X framework that provides a rich set of programming interfaces for manipulating time-based media such as audio and video. With QTKit, we can perform the following tasks with time-based media:

  • Play

  • Edit

  • Export

  • Capture

  • Record

For our iSight Recorder App, we will be focusing on the component of QTKit called QTKit Capture, which provides the classes we need to capture and record audio and video to Quicktime movies.

QTKit Capture, at its core, provides us with the following key classes:

  • QTCaptureSession

  • QTCaptureInput

  • QTCaptureOutput

  • QTCaptureConnection

In essence, we need to create a capture session, which will have some inputs (iSight camera, built-in microphone), some outputs (preview view, movie file), and some connections between the inputs and the outputs.

Note

We are only going to implement single audio and video inputs with single preview and file outputs but it's important to understand that the QTKit Capture architecture...