FFmpeg: AVIAMFAudioElement Struct Reference

FFmpeg

[フレーム]

Data Fields

AVIAMFAudioElement Struct Reference

libavutil » Audio related » Immersive Audio Model and Formats » Audio Element

Information on how to combine one or more audio streams, as defined in section 3.6 of IAMF. More...

#include <iamf.h>

Data Fields

const AVClass * av_class

AVIAMFLayer ** layers

unsigned int nb_layers

Number of layers, or channel groups, in the Audio Element. More...

AVIAMFParamDefinition * demixing_info

Demixing information used to reconstruct a scalable channel audio representation. More...

AVIAMFParamDefinition * recon_gain_info

Recon gain information used to reconstruct a scalable channel audio representation. More...

enum AVIAMFAudioElementType audio_element_type

Audio element type as defined in section 3.6 of IAMF. More...

unsigned int default_w

Default weight value as defined in section 3.6 of IAMF. More...

Detailed Description

Information on how to combine one or more audio streams, as defined in section 3.6 of IAMF.

Note: The struct should be allocated with av_iamf_audio_element_alloc() and its size is not a part of the public ABI.

Definition at line 356 of file iamf.h.

Field Documentation

◆ av_class

const AVClass* AVIAMFAudioElement::av_class

Definition at line 357 of file iamf.h.

Referenced by av_iamf_audio_element_alloc().

◆ layers

AVIAMFLayer** AVIAMFAudioElement::layers

Definition at line 359 of file iamf.h.

Referenced by ambisonics_config(), av_iamf_audio_element_free(), dump_stream_group(), ff_iamf_add_audio_element(), parameter_block_obu(), print_iamf_audio_element_params(), scalable_channel_layout_config(), and write_parameter_block().

◆ nb_layers

unsigned int AVIAMFAudioElement::nb_layers

Number of layers, or channel groups, in the Audio Element.

There may be 6 layers at most, and for audio_element_type AV_IAMF_AUDIO_ELEMENT_TYPE_SCENE, there may be exactly 1.

Set by av_iamf_audio_element_add_layer(), must not be modified by any other code.

Definition at line 368 of file iamf.h.

Referenced by av_iamf_audio_element_free(), dump_stream_group(), ff_iamf_add_audio_element(), iamf_write_audio_element(), of_parse_iamf_audio_element_layers(), parameter_block_obu(), print_iamf_audio_element_params(), scalable_channel_layout_config(), and write_parameter_block().

◆ demixing_info

AVIAMFParamDefinition* AVIAMFAudioElement::demixing_info

Demixing information used to reconstruct a scalable channel audio representation.

The type must be AV_IAMF_PARAMETER_DEFINITION_DEMIXING.

Definition at line 376 of file iamf.h.

Referenced by audio_element_obu(), av_iamf_audio_element_free(), ff_iamf_add_audio_element(), iamf_write_audio_element(), of_map_group(), of_parse_iamf_audio_element_layers(), and print_iamf_audio_element_params().

◆ recon_gain_info

AVIAMFParamDefinition* AVIAMFAudioElement::recon_gain_info

Recon gain information used to reconstruct a scalable channel audio representation.

The type must be AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN.

Definition at line 383 of file iamf.h.

◆ audio_element_type

enum AVIAMFAudioElementType AVIAMFAudioElement::audio_element_type

Audio element type as defined in section 3.6 of IAMF.

Definition at line 388 of file iamf.h.

Referenced by audio_element_obu(), ff_iamf_add_audio_element(), iamf_write_audio_element(), and print_iamf_audio_element_params().

◆ default_w

unsigned int AVIAMFAudioElement::default_w

Default weight value as defined in section 3.6 of IAMF.

Definition at line 393 of file iamf.h.

Referenced by iamf_write_audio_element(), param_parse(), and print_iamf_audio_element_params().

The documentation for this struct was generated from the following file:

libavutil/iamf.h

Generated on Fri Aug 22 2025 14:00:19 for FFmpeg by doxygen 1.8.17