Colorspace Utility

Data Structures
struct	AVLumaCoefficients
	Struct containing luma coefficients to be used for RGB to YUV/YCoCg, or similar calculations. More...
struct	AVCIExy
	Struct containing chromaticity x and y values for the standard CIE 1931 chromaticity definition. More...
struct	AVPrimaryCoefficients
	Struct defining the red, green, and blue primary locations in terms of CIE 1931 chromaticity x and y. More...
struct	AVColorPrimariesDesc
	Struct that contains both white point location and primaries location, providing the complete description of a color gamut. More...

Typedefs
typedef AVCIExy	AVWhitepointCoefficients
	Struct defining white point location in terms of CIE 1931 chromaticity x and y. More...

Functions
const AVLumaCoefficients *	av_csp_luma_coeffs_from_avcsp (enum AVColorSpace csp)
	Retrieves the Luma coefficients necessary to construct a conversion matrix from an enum constant describing the colorspace. More...
const AVColorPrimariesDesc *	av_csp_primaries_desc_from_id (enum AVColorPrimaries prm)
	Retrieves a complete gamut description from an enum constant describing the color primaries. More...
enum AVColorPrimaries	av_csp_primaries_id_from_desc (const AVColorPrimariesDesc *prm)
	Detects which enum AVColorPrimaries constant corresponds to the given complete gamut description. More...

Detailed Description

Typedef Documentation

AVWhitepointCoefficients

typedef AVCIExy AVWhitepointCoefficients

Struct defining white point location in terms of CIE 1931 chromaticity x and y.

Definition at line 63 of file csp.h.

Function Documentation

av_csp_luma_coeffs_from_avcsp()

const AVLumaCoefficients* av_csp_luma_coeffs_from_avcsp

(

enum AVColorSpace

csp

)

Retrieves the Luma coefficients necessary to construct a conversion matrix from an enum constant describing the colorspace.

Parameters

csp	An enum constant indicating YUV or similar colorspace.

Returns

The Luma coefficients associated with that colorspace, or NULL if the constant is unknown to libavutil.

Definition at line 53 of file csp.c.

Referenced by create_filtergraph(), ff_draw_init2(), filter_frame(), init_filter(), and tonemap_opencl_init().

av_csp_primaries_desc_from_id()

const AVColorPrimariesDesc* av_csp_primaries_desc_from_id

(

enum AVColorPrimaries

prm

)

Retrieves a complete gamut description from an enum constant describing the color primaries.

Parameters

prm	An enum constant indicating primaries

Returns

A description of the colorspace gamut associated with that enum constant, or NULL if the constant is unknown to libavutil.

Definition at line 85 of file csp.c.

Referenced by create_filtergraph(), ff_icc_profile_generate(), get_rgb2rgb_matrix(), libjxl_get_primaries(), and libjxl_populate_primaries().

av_csp_primaries_id_from_desc()

enum AVColorPrimaries av_csp_primaries_id_from_desc

(

const AVColorPrimariesDesc *

prm

)

Detects which enum AVColorPrimaries constant corresponds to the given complete gamut description.

See also

enum AVColorPrimaries

Parameters

prm	A description of the colorspace gamut

Returns

The enum constant associated with this gamut, or AVCOL_PRI_UNSPECIFIED if no clear match can be idenitified.

Definition at line 105 of file csp.c.

Referenced by iccdetect_filter_frame(), and libjxl_get_primaries().