lut3d.h File Reference

#include <stdint.h>
#include <stdlib.h>

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Typedefs
typedef enum dt_lut3d_interpolation_t	dt_lut3d_interpolation_t

Enumerations
enum	dt_lut3d_interpolation_t {   DT_LUT3D_INTERP_TETRAHEDRAL = 0 ,   DT_LUT3D_INTERP_TRILINEAR = 1 ,   DT_LUT3D_INTERP_PYRAMID = 2 }

Functions
void	dt_lut3d_apply (const float *in, float *out, size_t pixel_nb, const float *clut, uint16_t level, float normalization, dt_lut3d_interpolation_t interpolation)
	Apply one interpolation model over a packed RGB CLUT.
void	dt_lut3d_tetrahedral_interp (const float *in, float *out, size_t pixel_nb, const float *clut, uint16_t level, float normalization)
void	dt_lut3d_trilinear_interp (const float *in, float *out, size_t pixel_nb, const float *clut, uint16_t level, float normalization)
void	dt_lut3d_pyramid_interp (const float *in, float *out, size_t pixel_nb, const float *clut, uint16_t level, float normalization)

Typedef Documentation

dt_lut3d_interpolation_t

typedef enum dt_lut3d_interpolation_t dt_lut3d_interpolation_t

Enumeration Type Documentation

dt_lut3d_interpolation_t

enum dt_lut3d_interpolation_t

Enumerator
DT_LUT3D_INTERP_TETRAHEDRAL
DT_LUT3D_INTERP_TRILINEAR
DT_LUT3D_INTERP_PYRAMID

Function Documentation

dt_lut3d_apply()

void dt_lut3d_apply	(	const float *	in,
		float *	out,
		size_t	pixel_nb,
		const float *	clut,
		uint16_t	level,
		float	normalization,
		dt_lut3d_interpolation_t	interpolation
	)

Apply one interpolation model over a packed RGB CLUT.

The interpolation always happens in the normalized [0, 1] lattice domain. normalization lets callers map scene-referred RGB into that domain before lookup and restore the white level afterwards without rescaling the whole buffer in separate passes.

All modules using a dense RGB CLUT should go through this shared runtime so file-backed LUTs and procedurally-generated LUTs only differ by how they author the lattice values, not by how they traverse the cells.

References DT_LUT3D_INTERP_PYRAMID, DT_LUT3D_INTERP_TETRAHEDRAL, DT_LUT3D_INTERP_TRILINEAR, dt_lut3d_pyramid_interp(), dt_lut3d_tetrahedral_interp(), dt_lut3d_trilinear_interp(), and out.

Referenced by dt_colorrings_apply_rgb_lut(), and process().

dt_lut3d_pyramid_interp()

void dt_lut3d_pyramid_interp	(	const float *	in,
		float *	out,
		size_t	pixel_nb,
		const float *	clut,
		uint16_t	level,
		float	normalization
	)

dt_lut3d_tetrahedral_interp()

void dt_lut3d_tetrahedral_interp	(	const float *	in,
		float *	out,
		size_t	pixel_nb,
		const float *	clut,
		uint16_t	level,
		float	normalization
	)

dt_lut3d_trilinear_interp()

void dt_lut3d_trilinear_interp	(	const float *	in,
		float *	out,
		size_t	pixel_nb,
		const float *	clut,
		uint16_t	level,
		float	normalization
	)