FFmpeg: Parameter Definition

FFmpeg

Data Structures | Enumerations | Functions

Parameter Definition

libavutil » Audio related » Immersive Audio Model and Formats

Data Structures

struct AVIAMFMixGain

Mix Gain Parameter Data as defined in section 3.8.1 of IAMF. More...

struct AVIAMFDemixingInfo

Demixing Info Parameter Data as defined in section 3.8.2 of IAMF. More...

struct AVIAMFReconGain

Recon Gain Info Parameter Data as defined in section 3.8.3 of IAMF. More...

struct AVIAMFParamDefinition

Parameters as defined in section 3.6.1 of IAMF. More...

Enumerations

enum AVIAMFAnimationType { AV_IAMF_ANIMATION_TYPE_STEP, AV_IAMF_ANIMATION_TYPE_LINEAR, AV_IAMF_ANIMATION_TYPE_BEZIER }

enum AVIAMFParamDefinitionType { AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN, AV_IAMF_PARAMETER_DEFINITION_DEMIXING, AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN }

Functions

const AVClass * av_iamf_param_definition_get_class (void)

AVIAMFParamDefinition * av_iamf_param_definition_alloc (enum AVIAMFParamDefinitionType type, unsigned int nb_subblocks, size_t *size)

Allocates memory for AVIAMFParamDefinition, plus an array of. More...

static av_always_inline void * av_iamf_param_definition_get_subblock (const AVIAMFParamDefinition *par, unsigned int idx)

Get the subblock at the specified. More...

Detailed Description

Parameters as defined in section 3.6.1 and 3.8 of IAMF.

Enumeration Type Documentation

◆ AVIAMFAnimationType

enum AVIAMFAnimationType

Enumerator
AV_IAMF_ANIMATION_TYPE_STEP
AV_IAMF_ANIMATION_TYPE_LINEAR
AV_IAMF_ANIMATION_TYPE_BEZIER

Definition at line 66 of file iamf.h.

◆ AVIAMFParamDefinitionType

enum AVIAMFParamDefinitionType

Enumerator
AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN	Subblocks are of struct type AVIAMFMixGain.
AV_IAMF_PARAMETER_DEFINITION_DEMIXING	Subblocks are of struct type AVIAMFDemixingInfo.
AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN	Subblocks are of struct type AVIAMFReconGain.

Definition at line 169 of file iamf.h.

Function Documentation

◆ av_iamf_param_definition_get_class()

const AVClass* av_iamf_param_definition_get_class ( void )

Definition at line 154 of file iamf.c.

◆ av_iamf_param_definition_alloc()

AVIAMFParamDefinition* av_iamf_param_definition_alloc ( enum AVIAMFParamDefinitionType type,

unsigned int nb_subblocks,

size_t * size

)

Allocates memory for AVIAMFParamDefinition, plus an array of.

nb_subblocks

amount of subblocks of the given type and initializes the variables. Can be freed with a normal av_free() call.

Parameters: size if non-NULL, the size in bytes of the resulting data array is written here.

Definition at line 159 of file iamf.c.

Referenced by of_parse_iamf_audio_element_layers(), of_parse_iamf_submixes(), param_parse(), and parameter_block_obu().

◆ av_iamf_param_definition_get_subblock()

static av_always_inline void* av_iamf_param_definition_get_subblock ( const AVIAMFParamDefinition * par,

unsigned int idx

)

static

Get the subblock at the specified.

idx

. Must be between 0 and nb_subblocks - 1.

The param definition type defines the struct type of the returned pointer.

Definition at line 260 of file iamf.h.

Referenced by av_iamf_param_definition_alloc(), iamf_write_audio_element(), of_parse_iamf_audio_element_layers(), param_definition(), param_parse(), parameter_block_obu(), print_iamf_param_definition(), and write_parameter_block().

Generated on Tue Nov 18 2025 19:24:19 for FFmpeg by doxygen 1.8.17