Audio downmix metadata

Data Structures
struct	AVDownmixInfo
	This structure describes optional metadata relevant to a downmix procedure. More...

Enumerations
enum	AVDownmixType {   AV_DOWNMIX_TYPE_UNKNOWN, AV_DOWNMIX_TYPE_LORO, AV_DOWNMIX_TYPE_LTRT, AV_DOWNMIX_TYPE_DPLII,   AV_DOWNMIX_TYPE_NB }
	Possible downmix types. More...

Functions
AVDownmixInfo *	av_downmix_info_update_side_data (AVFrame *frame)
	Get a frame's AV_FRAME_DATA_DOWNMIX_INFO side data for editing.

Detailed Description

Enumeration Type Documentation

enum AVDownmixType

Possible downmix types.

Enumerator:

AV_DOWNMIX_TYPE_UNKNOWN	Not indicated.
AV_DOWNMIX_TYPE_LORO	Lo/Ro 2-channel downmix (Stereo).
AV_DOWNMIX_TYPE_LTRT	Lt/Rt 2-channel downmix, Dolby Surround compatible.
AV_DOWNMIX_TYPE_DPLII	Lt/Rt 2-channel downmix, Dolby Pro Logic II compatible.
AV_DOWNMIX_TYPE_NB	Number of downmix types. Not part of ABI.

Definition at line 44 of file downmix_info.h.

Function Documentation

AVDownmixInfo* av_downmix_info_update_side_data

(

AVFrame *

frame

)

Get a frame's AV_FRAME_DATA_DOWNMIX_INFO side data for editing.

The side data is created and added to the frame if it's absent.

Parameters

frame

the frame for which the side data is to be obtained.

Returns

the AVDownmixInfo structure to be edited by the caller.

Definition at line 24 of file downmix_info.c.

Referenced by ac3_decode_frame().