Audio downmix metadata

Граф связей класса Audio downmix metadata:

Классы
struct	AVDownmixInfo

Определения типов
typedef struct AVDownmixInfo	AVDownmixInfo

Перечисления
enum	AVDownmixType {   AV_DOWNMIX_TYPE_UNKNOWN, AV_DOWNMIX_TYPE_LORO, AV_DOWNMIX_TYPE_LTRT, AV_DOWNMIX_TYPE_DPLII,   AV_DOWNMIX_TYPE_NB }

Функции
AVDownmixInfo *	av_downmix_info_update_side_data (AVFrame *frame)

Подробное описание

Типы

AVDownmixInfo

typedef struct AVDownmixInfo AVDownmixInfo

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/downmix_info.h>

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.

Перечисления

AVDownmixType

enum AVDownmixType

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/downmix_info.h>

Possible downmix types.

Элементы перечислений
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.

См. определение в файле downmix_info.h строка 44

                   {
    AV_DOWNMIX_TYPE_UNKNOWN, 
    AV_DOWNMIX_TYPE_LORO,    
    AV_DOWNMIX_TYPE_LTRT,    
    AV_DOWNMIX_TYPE_DPLII,   
    AV_DOWNMIX_TYPE_NB       
};

Функции

av_downmix_info_update_side_data()

AVDownmixInfo* av_downmix_info_update_side_data

(

AVFrame *

frame

)

#include <C:/git/world-of-might-and-magic/lib/win32/x86/ffmpeg-4.2.2/include/libavutil/downmix_info.h>

Get a frame's AV_FRAME_DATA_DOWNMIX_INFO side data for editing.

If the side data is absent, it is created and added to the frame.

Аргументы

frame

the frame for which the side data is to be obtained or created

Возвращает

the AVDownmixInfo structure to be edited by the caller, or NULL if the structure cannot be allocated.