Audio Channel Layout Tags

The identifiers for audio channel layouts.

Overview

These identifiers specify the channels included in a layout and specify the particular ordering of those channels. Used in the mChannelLayoutTag field of an AudioChannelLayout structure.

Topics

MPEG Defined Layouts

var kAudioChannelLayoutTag_MPEG_3_0_A: AudioChannelLayoutTag

An MPEG 3-channel, configuration A, audio layout.

var kAudioChannelLayoutTag_MPEG_3_0_B: AudioChannelLayoutTag

An MPEG 3-channel, configuration B, audio layout.

var kAudioChannelLayoutTag_MPEG_4_0_A: AudioChannelLayoutTag

An MPEG 4-channel, configuration A, audio layout.

var kAudioChannelLayoutTag_MPEG_4_0_B: AudioChannelLayoutTag

An MPEG 4-channel, configuration B, audio layout

var kAudioChannelLayoutTag_MPEG_5_0_A: AudioChannelLayoutTag

An MPEG 5-channel, configuration A, audio layout.

var kAudioChannelLayoutTag_MPEG_5_0_B: AudioChannelLayoutTag

An MPEG 5-channel, configuration B, audio layout.

var kAudioChannelLayoutTag_MPEG_5_0_C: AudioChannelLayoutTag

An MPEG 5-channel, configuration C, audio layout.

var kAudioChannelLayoutTag_MPEG_5_0_D: AudioChannelLayoutTag

An MPEG 5-channel, configuration D, audio layout.

var kAudioChannelLayoutTag_MPEG_5_1_A: AudioChannelLayoutTag

An MPEG 5.1-channel, configuration A, audio layout.

var kAudioChannelLayoutTag_MPEG_5_1_B: AudioChannelLayoutTag

An MPEG 5.1-channel, configuration B, audio layout.

var kAudioChannelLayoutTag_MPEG_5_1_C: AudioChannelLayoutTag

An MPEG 5.1-channel, configuration C, audio layout.

var kAudioChannelLayoutTag_MPEG_5_1_D: AudioChannelLayoutTag

An MPEG 5.1-channel, configuration D, audio layout.

var kAudioChannelLayoutTag_MPEG_6_1_A: AudioChannelLayoutTag

An MPEG 6.1-channel, configuration A, audio layout.

var kAudioChannelLayoutTag_MPEG_7_1_A: AudioChannelLayoutTag

An MPEG 7.1-channel, configuration A, audio layout.

var kAudioChannelLayoutTag_MPEG_7_1_B: AudioChannelLayoutTag

An MPEG 7.1-channel, configuration B, audio layout.

var kAudioChannelLayoutTag_MPEG_7_1_C: AudioChannelLayoutTag

An MPEG 7.1-channel, configuration C, audio layout.

DVD Defined Layouts

Symmetrical Layouts

var kAudioChannelLayoutTag_AudioUnit_4: AudioChannelLayoutTag

A quadraphonic symmetrical layout, recommended for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_5: AudioChannelLayoutTag

A pentagonal symmetrical layout, recommended for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_6: AudioChannelLayoutTag

A hexagonal symmetrical layout, recommended for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_8: AudioChannelLayoutTag

An octagonal symmetrical layout, recommended for use by audio units.

Surround Based Layouts

var kAudioChannelLayoutTag_AudioUnit_5_0: AudioChannelLayoutTag

A 5-channel surround-based layout, recommended for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_6_0: AudioChannelLayoutTag

A 6-channel surround-based layout, recommended for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_7_0: AudioChannelLayoutTag

A 7-channel surround-based layout, recommended for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_7_0_Front: AudioChannelLayoutTag

An alternate 7-channel surround-based layout, for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_5_1: AudioChannelLayoutTag

A 5.1-channel surround-based layout, recommended for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_6_1: AudioChannelLayoutTag

A 6.1-channel surround-based layout, recommended for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_7_1: AudioChannelLayoutTag

A 7.1-channel surround-based layout, recommended for use by audio units.

var kAudioChannelLayoutTag_AudioUnit_7_1_Front: AudioChannelLayoutTag

A 7.1-channel surround-based layout, recommended for use by audio units.

var kAudioChannelLayoutTag_TMH_10_2_std: AudioChannelLayoutTag

A TMH 10.2 multiple-channel surround-based layout .

var kAudioChannelLayoutTag_TMH_10_2_full: AudioChannelLayoutTag

An extended TMH 10.2 multiple-channel surround-based layout, recommended for use by audio units.

AAC Defined Layouts

var kAudioChannelLayoutTag_AAC_4_0: AudioChannelLayoutTag

An AAC 4-channel surround-based layout.

var kAudioChannelLayoutTag_AAC_5_0: AudioChannelLayoutTag

An AAC 5-channel surround-based layout.

var kAudioChannelLayoutTag_AAC_5_1: AudioChannelLayoutTag

An AAC 5.1-channel surround-based layout.

var kAudioChannelLayoutTag_AAC_6_0: AudioChannelLayoutTag

An AAC 6-channel surround-based layout.

var kAudioChannelLayoutTag_AAC_6_1: AudioChannelLayoutTag

An AAC 6.1-channel surround-based layout.

var kAudioChannelLayoutTag_AAC_7_0: AudioChannelLayoutTag

An AAC 7-channel surround-based layout.

var kAudioChannelLayoutTag_AAC_7_1: AudioChannelLayoutTag

An AAC 7.1-channel surround-based layout.

var kAudioChannelLayoutTag_AAC_7_1_B: AudioChannelLayoutTag

An AAC 7.1-channel, configuration B, surround-based layout.

var kAudioChannelLayoutTag_AAC_7_1_C: AudioChannelLayoutTag

An AAC 7.1-channel, configuration C, surround-based layout.

EAC3 Defined Layouts

var kAudioChannelLayoutTag_EAC_6_0_A: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC_7_0_A: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_6_1_A: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_6_1_B: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_6_1_C: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_7_1_A: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_7_1_B: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_7_1_C: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_7_1_D: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_7_1_E: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_7_1_F: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_7_1_G: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

var kAudioChannelLayoutTag_EAC3_7_1_H: AudioChannelLayoutTag

A Blu-ray Disc audio layout for Enhanced AC-3, also known as Dolby Digital Plus.

DTS Defined Layouts

var kAudioChannelLayoutTag_DTS_3_1: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_4_1: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_6_0_A: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_6_0_B: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_6_0_C: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_6_1_A: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_6_1_B: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_6_1_C: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_6_1_D: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_7_0: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_7_1: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_8_0_A: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_8_0_B: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_8_1_A: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

var kAudioChannelLayoutTag_DTS_8_1_B: AudioChannelLayoutTag

A Blu-ray Disc audio layout, defined by DTS (Digital Theater Systems Ltd.).

HOA Defined Layouts

var kAudioChannelLayoutTag_HOA_ACN_N3D: AudioChannelLayoutTag

A Higher-order Ambisonics, full 3D normalization audio layout.

var kAudioChannelLayoutTag_HOA_ACN_SN3D: AudioChannelLayoutTag

A Higher-order Ambisonics, Schmidt semi-normalization audio layout.

General Information Tags

var kAudioChannelLayoutTag_DiscreteInOrder: AudioChannelLayoutTag

A tag used to map input channels to output channels without changing the channel order.

Reserved Tag Range

The tags in this section define a range of values reserved for future Apple use. Do not create tags in this range.

var kAudioChannelLayoutTag_BeginReserved: AudioChannelLayoutTag

The beginning value for a reserved range of layout tags.

var kAudioChannelLayoutTag_EndReserved: AudioChannelLayoutTag

The ending value for a reserved range of layout tags.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

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