avTouch |
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DESCRIPTION: |
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The avTouch sample demonstrates use of the AV Foundation framework for basic playback of an audio file. |
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The code in avTouch uses AVFoundation to play an audio file containing AAC audio data. The application uses CoreGraphics and OpenGL to display volume meters for the audio being played. |
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This application shows how to: |
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* Create an AVAudioPlayer object from an input audio file. |
* Use OpenGL and CoreGraphics to display metering levels. |
* Use Audio Session Services to set an appropriate audio session category for playback. |
* Use AVFoundation's interruption delegate to pause playback upon receiving an interruption, and to then resume playback if the interruption ends. |
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avTouch does not demonstrate how to play multiple files, nor does it provide more advanced AVFoundation usage. |
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RELATED INFORMATION: |
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AV Foundation Framework Reference, April 2010 |
Multimedia Programming Guide, April 2010 |
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SPECIAL CONSIDERATIONS: |
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none |
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BUILD REQUIREMENTS: |
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Mac OS X v10.9, Xcode 5, iOS 7.0 and later |
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RUNTIME REQUIREMENTS: |
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Simulator: Mac OS X v10.9, iOS SDK 7.0 and later |
iPhone: iOS 7.0 |
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PACKAGING LIST: |
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avTouchController.h |
avTouchController.mm |
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The avTouchController defines the main controller class, responsible for managing the AVAudioPlayer object and handling user input |
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CALevelMeter.h |
CALevelMeter.mm |
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The CALevelMeter class defines the level meter view for the applcation, displaying the metering data from an AVAudioPlayer object |
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LevelMeter.h |
LevelMeter.m |
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LevelMeter is a base metering class, providing simple functionality for displaying level data |
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GLLevelMeter.h |
GLLevelMeter.m |
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GLLevelMeter is a subclass of LevelMeter that uses OpenGL for drawing |
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avTouchAppDelegate.h |
avTouchAppDelegate.m |
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The avTouchAppDelegate class defines the application delegate object, responsible for adding the application's view to the application window. |
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avTouchViewController.h |
avTouchViewController.m |
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The avTouchViewController class defines the view controller, responsible for handling rotations |
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Copyright (C) 2010-2014 Apple Inc. All rights reserved. |
