New sample app posted: MixerHost
New sample app posted: MixerHost
- Subject: New sample app posted: MixerHost
- From: Murray Jason <email@hidden>
- Date: Wed, 28 Jul 2010 17:01:05 -0700
Hi all,
The MixerHost app <http://developer.apple.com/iphone/library/samplecode/MixerHost/Introduction/Intro.html> demonstrates how to use the Multichannel Mixer audio unit in an iOS application to mix two sounds. It also demonstrates other interesting stuff. From the ReadMe:
This sample shows how to:
* Write an input render callback function
* Locate system audio units at runtime and then load, instantiate, configure,
and connect them
* Correctly use audio stream formats in the context of an audio processing
graph
* Instantiate, open, initialize, and start an audio processing graph
* Control a Multichannel Mixer unit through a user interface
This sample also shows how to:
* Configure an audio application for playing in the background by adding the
"app plays audio" key to the info.plist file
* Use the AVAudioSession class to configure audio behavior, set hardware
sample rate, and handle interruptions
* Make the app eligible for its audio session to be reactivated while in the
background
* Respond to remote-control events as described in Event Handling Guide for
iOS
* Allocate memory for an AudioBufferList struct so that it can handle more
than one channel of audio
* Use the C interface from Audio Session Services to handle audio hardware
route changes
* Use Cocoa notifications to communicate state changes from the audio object
back to the controller object
Please provide feedback on the sample by way of http://bugreporter.apple.com or on this list. Thanks!
-murray
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