AVAmbientViewingEnvironment Struct Reference

Ambient viewing environment metadata as defined by H.274. More...

#include <ambient_viewing_environment.h>

Data Fields
AVRational	ambient_illuminance
	Environmental illuminance of the ambient viewing environment in lux. More...
AVRational	ambient_light_x
	Normalized x chromaticity coordinate of the environmental ambient light in the nominal viewing environment according to the CIE 1931 definition of x and y as specified in ISO/CIE 11664-1. More...
AVRational	ambient_light_y
	Normalized y chromaticity coordinate of the environmental ambient light in the nominal viewing environment according to the CIE 1931 definition of x and y as specified in ISO/CIE 11664-1. More...

Detailed Description

Ambient viewing environment metadata as defined by H.274.

The values are saved in AVRationals so that they keep their exactness, while allowing for easy access to a double value with f.ex. av_q2d.

Note

sizeof(AVAmbientViewingEnvironment) is not part of the public ABI, and it must be allocated using av_ambient_viewing_environment_alloc.

Definition at line 36 of file ambient_viewing_environment.h.

Field Documentation

ambient_illuminance

AVRational AVAmbientViewingEnvironment::ambient_illuminance

Environmental illuminance of the ambient viewing environment in lux.

Definition at line 40 of file ambient_viewing_environment.h.

Referenced by dump_ambient_viewing_environment(), dump_ambient_viewing_environment_metadata(), get_defaults(), mov_read_amve(), mov_write_amve_tag(), and print_ambient_viewing_environment().

ambient_light_x

AVRational AVAmbientViewingEnvironment::ambient_light_x

Normalized x chromaticity coordinate of the environmental ambient light in the nominal viewing environment according to the CIE 1931 definition of x and y as specified in ISO/CIE 11664-1.

Definition at line 47 of file ambient_viewing_environment.h.

Referenced by dump_ambient_viewing_environment(), dump_ambient_viewing_environment_metadata(), get_defaults(), mov_read_amve(), mov_write_amve_tag(), and print_ambient_viewing_environment().

ambient_light_y

AVRational AVAmbientViewingEnvironment::ambient_light_y

Normalized y chromaticity coordinate of the environmental ambient light in the nominal viewing environment according to the CIE 1931 definition of x and y as specified in ISO/CIE 11664-1.

Definition at line 54 of file ambient_viewing_environment.h.

Referenced by dump_ambient_viewing_environment(), dump_ambient_viewing_environment_metadata(), get_defaults(), mov_read_amve(), mov_write_amve_tag(), and print_ambient_viewing_environment().

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

• libavutil/ambient_viewing_environment.h