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CoreAudio Framework Reference Core Audio Data Types Reference

Document Revision History

This table describes the changes to Core Audio Data Types Reference.

Date

Notes

2011-10-12

2011-02-20

2010-04-10

Updated for iOS 4.0.


Improved the formatting of channel layout information in Audio Channel Layout Tags.


Added descriptions for 28 new channel layout constants in Audio Channel Layout Tags; these constants describe Blu-ray Disc channel layouts for Enhanced AC-3 (Dolby Digital Plus) and DTS (Digital Theater Sound) formats.


Added a description for the kAudioFormatMPEG4AAC_ELD audio format constant.


Improved the description of the AudioStreamBasicDescription structure.


Added descriptions for three result codes: “kAudio_UnimplementedError”, “kAudio_ParamError”, and “kAudio_MemFullError”.


Added a description for the kAudioUnitSampleFractionBits constant.

2009-06-24


Added descriptions for the kSMPTETimeType2398, kSMPTETimeType50, kSMPTETimeType5994Drop, and kSMPTETimeType60Drop timecode constants.

2009-03-16


Added descriptions for the new kAudioFormatDVIIntelIMA, kAudioFormatMicrosoftGSM, and kAudioFormatAES3 audio data format constants. Updated declaration for the FillOutASBDForLPCM C++ inline function.

2008-11-19

2008-09-09

Updated for iOS version 2.1.

2008-07-08

Updated for iOS 2.0.

2007-01-08

New document that lists and describes the data types and constants used throughout the Core Audio API.