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AudioToolbox Framework Reference Audio Session Services Reference

Document Revision History

This table describes the changes to Audio Session Services Reference.

Date

Notes

2014-02-11

2011-10-25

2011-10-12


Added descriptions for the kAudioSessionProperty_InputGainAvailable and kAudioSessionProperty_InputGainScalar properties, which support programmatically adjusting input gain.


Added descriptions for new constants and properties that indicate audio hardware routes in Audio Route Description Dictionary Keys, USB Accessory Audio Source Dictionary Keys, USB Accessory Audio Destination Dictionary Keys, Audio Input Routes, Audio Output Routes, and Audio Session Property Identifiers.


Improved the descriptions for the kAudioSessionProperty_OverrideAudioRoute and kAudioSessionProperty_OverrideCategoryEnableBluetoothInput properties.

2011-03-11

2011-01-03

2010-07-09

Updated for iOS 4.0.


Added a description for the AudioSessionSetActiveWithFlags function.


Added descriptions for the Audio Session Activation Flags and Audio Session Interruption Types enumerations.


Added a description for the kAudioSessionProperty_InterruptionType property.

2010-05-14

2009-11-18


Improved and updated descriptions in the Audio Session Categories enumeration; added description for new category kAudioSessionCategory_AudioProcessing.


Clarified description of Alternative Audio Route Change Reason Dictionary Key.


Added descriptions for new result codes “kAudioSessionNoCategorySet” and “kAudioSessionIncompatibleCategory”. Added links to Result Codes chapter in each function description.

2009-04-23


Added descriptions for kAudioSessionProperty_ServerDied property and for “kAudioServicesNoHardwareError” result code.

2009-02-04


Added descriptions for Alternative Audio Route Change Reason Dictionary Key defines.

2008-11-12


Clarified description of AudioSessionAddPropertyListener function.

2008-09-09