FFmpeg: Colorspace Utility

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Data Structures | Typedefs | Functions

Colorspace Utility

libavutil » Mathematics

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().

Generated on Wed Aug 24 2022 21:42:48 for FFmpeg by doxygen 1.8.17