Learning AV Foundation: A Hands-on Guide to Mastering the AV Foundation Framework
By: Bob McCune (author)Paperback
1 - 2 weeks availability
AV Foundation for iOS and OS X(R) Programming-Get Started Fast! If you develop media-rich iOS or OS X apps, you can do amazing things with Apple's AV Foundation. However, the framework is extremely large, reliant on cutting-edge language features, and poorly documented. Now, there's a more productive way to master these immensely powerful technologies: Bob McCune's Learning AV Foundation. McCune's live presentations and GitHub projects have already helped thousands of Apple developers get started with AV Foundation. Building on his experience, McCune helps you gain true mastery by creating real-world apps, hands-on. You'll build a voice memo app, custom video player, video editor, and an image/video camera app. As you proceed, you'll master all the techniques you need to write your own advanced media apps from scratch. Throughout, McCune provides carefully crafted challenges and complete starter apps-all designed to help you deepen your understanding and make the most of Apple's breakthrough media framework.
COVERAGE INCLUDES * Understanding how AV Foundation fits in Apple's media environment and each of its key areas of functionality * Enabling your apps with audio playback and recording features * Enhancing video playback to deliver a richer, more dynamic experience * Using AV Kit to match your user interfaces with iOS Videos or OS X QuickTime Player * Developing media capture apps with real-time video processing using OpenGL ES and Core Image * Implementing custom video players * Integrating advanced capture features such as video zooming, face detection, barcode scanning, and high frame rate capture * Mixing multiple audio tracks and automating volume control * Building sophisticated non-linear, non-destructive editing apps * Adding advanced video editing capabilities, such as video transitions and animation effects
Bob McCune is an iOS developer and instructor from Minnesota. He started developing for the Mac in 2007 and then switched to iOS when the first iPhone SDK was released in 2008. He is the owner of TapHarmonic, LLC, a small iOS consulting and training company based out of MN. Bob also founded the MN chapter of CocoaHeads in the spring of 2008 and remains the group leader to this day. Bob and his wife, Linda, have two amazing children who are who are growing up faster than he would like. He is incredibly blessed to have such a loving and supportive family.
Preface xiii Part I: AV Foundation Essentials 1 Chapter 1: Getting Started with AV Foundation 3 What Is AV Foundation? 3 Where Does AV Foundation Fit? 4 Decomposing AV Foundation 6 Understanding Digital Media 7 Digital Media Compression 13 Container Formats 18 Hello AV Foundation 19 Summary 23 Challenge 24 Chapter 2: Playing and Recording Audio 25 Mac and iOS Audio Environments 25 Understanding Audio Sessions 26 Audio Playback with AVAudioPlayer 28 Building an Audio Looper 30 Configuring the Audio Session 34 Handling Interruptions 36 Responding to Route Changes 40 Audio Recording with AVAudioRecorder 42 Building a Voice Memo App 45 Enabling Audio Metering 52 Summary 57 Chapter 3: Working with Assets and Metadata 59 Understanding Assets 59 Creating an Asset 60 Asynchronous Loading 63 Media Metadata 65 Working with Metadata 70 Building the MetaManager App 76 Saving Metadata 98 Summary 101 Challenge 101 Chapter 4: Playing Video 103 Playback Overview 103 Playback Recipe 107 Working with Time 109 Building a Video Player 110 Time Observation 118 Creating a Visual Scrubber 124 Showing Subtitles 129 Airplay 133 Summary 136 Challenge 136 Chapter 5: Using AV Kit 137 AV Kit for iOS 137 AV Kit for Mac OS X 140 First Steps 140 Control Styles 144 Going Further 147 Working with Chapters 151 Enabling Trimming 157 Exporting 159 Movie Modernization 161 Summary 165 Challenge 166 Part II: Media Capture 167 Chapter 6: Capturing Media 169 Capture Overview 169 Simple Recipe 174 Building a Camera App 175 Summary 208 Challenge 208 Chapter 7: Using Advanced Capture Features 209 Video Zooming 209 Face Detection 216 Machine-Readable Code Detection 228 Using High Frame Rate Capture 241 Processing Video 247 Understanding CMSampleBuffer 249 Summary 257 Challenge 258 Chapter 8: Reading and Writing Media 259 Overview 259 Building an Audio Waveform View 265 Advanced Capture Recording 276 Summary 293 Challenge 293 Part III: Media Creation and Editing 295 Chapter 9: Composing and Editing Media 297 Composing Media 297 Working with Time 300 Basic Recipe 303 Introducing 15 Seconds 307 Building a Composition 311 Exporting the Composition 316 Summary 321 Challenge 322 Chapter 10: Mixing Audio 323 Mixing Audio 323 Mixing Audio in the 15 Seconds App 327 Summary 333 Challenge 333 Chapter 11: Building Video Transitions 335 Overview 335 Conceptual Steps 337 15 Seconds: Adding Video Transitions 348 Summary 360 Challenge 360 Chapter 12: Layering Animated Content 361 Using Core Animation 361 Using Core Animation with AV Foundation 363 15 Seconds: Adding Animated Titles 367 Preparing the Composition 378 Summary 383 Challenge 384
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