AVDownmixInfo Struct Reference

This structure describes optional metadata relevant to a downmix procedure. More...

#include <downmix_info.h>

Data Fields
enum AVDownmixType	preferred_downmix_type
	Type of downmix preferred by the mastering engineer.
double	center_mix_level
	Absolute scale factor representing the nominal level of the center channel during a regular downmix.
double	center_mix_level_ltrt
	Absolute scale factor representing the nominal level of the center channel during an Lt/Rt compatible downmix.
double	surround_mix_level
	Absolute scale factor representing the nominal level of the surround channels during a regular downmix.
double	surround_mix_level_ltrt
	Absolute scale factor representing the nominal level of the surround channels during an Lt/Rt compatible downmix.
double	lfe_mix_level
	Absolute scale factor representing the level at which the LFE data is mixed into L/R channels during downmixing.

Detailed Description

This structure describes optional metadata relevant to a downmix procedure.

All fields are set by the decoder to the value indicated in the audio bitstream (if present), or to a "sane" default otherwise.

Definition at line 58 of file downmix_info.h.

Field Documentation

enum AVDownmixType AVDownmixInfo::preferred_downmix_type

Type of downmix preferred by the mastering engineer.

Definition at line 62 of file downmix_info.h.

Referenced by ac3_decode_frame(), and dump_downmix().

double AVDownmixInfo::center_mix_level

Absolute scale factor representing the nominal level of the center channel during a regular downmix.

Definition at line 68 of file downmix_info.h.

Referenced by ac3_decode_frame(), and dump_downmix().

double AVDownmixInfo::center_mix_level_ltrt

Absolute scale factor representing the nominal level of the center channel during an Lt/Rt compatible downmix.

Definition at line 74 of file downmix_info.h.

Referenced by ac3_decode_frame(), and dump_downmix().

double AVDownmixInfo::surround_mix_level

Absolute scale factor representing the nominal level of the surround channels during a regular downmix.

Definition at line 80 of file downmix_info.h.

Referenced by ac3_decode_frame(), and dump_downmix().

double AVDownmixInfo::surround_mix_level_ltrt

Absolute scale factor representing the nominal level of the surround channels during an Lt/Rt compatible downmix.

Definition at line 86 of file downmix_info.h.

Referenced by ac3_decode_frame(), and dump_downmix().

double AVDownmixInfo::lfe_mix_level

Absolute scale factor representing the level at which the LFE data is mixed into L/R channels during downmixing.

Definition at line 92 of file downmix_info.h.

Referenced by ac3_decode_frame(), and dump_downmix().

---

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

• libavutil/downmix_info.h