csputils.c File Reference

#include "libavutil/csp.h"
#include "csputils.h"
#include "format.h"

Go to the source code of this file.

Functions
void	ff_sws_matrix3x3_mul (SwsMatrix3x3 *a, const SwsMatrix3x3 *b)
void	ff_sws_matrix3x3_invert (SwsMatrix3x3 *mat)
void	ff_sws_matrix3x3_apply (const SwsMatrix3x3 *mat, float vec[3])
static AVRational	cie_X (AVCIExy xy)
static AVRational	cie_Z (AVCIExy xy)
SwsMatrix3x3	ff_sws_rgb2xyz (const AVColorPrimariesDesc *desc)
SwsMatrix3x3	ff_sws_xyz2rgb (const AVColorPrimariesDesc *prim)
static void	apply_chromatic_adaptation (AVWhitepointCoefficients src, AVWhitepointCoefficients dst, SwsMatrix3x3 *mat)
SwsMatrix3x3	ff_sws_get_adaptation (const AVPrimaryCoefficients *prim, AVWhitepointCoefficients from, AVWhitepointCoefficients to)
SwsMatrix3x3	ff_sws_ipt_rgb2lms (const AVColorPrimariesDesc *prim)
SwsMatrix3x3	ff_sws_ipt_lms2rgb (const AVColorPrimariesDesc *prim)
static int	test_point_line (AVCIExy p, AVCIExy a, AVCIExy b)
static float	test_point_gamut (const AVCIExy point, const AVPrimaryCoefficients *prim)
bool	ff_prim_superset (const AVPrimaryCoefficients *a, const AVPrimaryCoefficients *b)
	Returns true if 'b' is entirely contained in 'a'. More...

Variables
static const SwsMatrix3x3	m_cat16
static const SwsMatrix3x3	m_cat16_inv
static const AVWhitepointCoefficients	d65
static const SwsMatrix3x3	hpe
const float	ff_pq_eotf_lut [PQ_LUT_SIZE+1]

Function Documentation

ff_sws_matrix3x3_mul()

void ff_sws_matrix3x3_mul	(	SwsMatrix3x3 *	a,
		const SwsMatrix3x3 *	b
	)

Definition at line 26 of file csputils.c.

Referenced by apply_chromatic_adaptation(), ff_sws_get_adaptation(), and ff_sws_ipt_rgb2lms().

ff_sws_matrix3x3_invert()

void ff_sws_matrix3x3_invert

(

SwsMatrix3x3 *

mat

)

Definition at line 39 of file csputils.c.

Referenced by ff_sws_ipt_lms2rgb(), ff_sws_rgb2xyz(), and ff_sws_xyz2rgb().

ff_sws_matrix3x3_apply()

void ff_sws_matrix3x3_apply	(	const SwsMatrix3x3 *	mat,
		float	vec[3]
	)

Definition at line 72 of file csputils.c.

Referenced by absolute().

cie_X()

static AVRational cie_X ( AVCIExy  xy )

inlinestatic

Definition at line 81 of file csputils.c.

Referenced by apply_chromatic_adaptation(), and ff_sws_rgb2xyz().

cie_Z()

static AVRational cie_Z ( AVCIExy  xy )

inlinestatic

Definition at line 87 of file csputils.c.

Referenced by apply_chromatic_adaptation(), and ff_sws_rgb2xyz().

ff_sws_rgb2xyz()

SwsMatrix3x3 ff_sws_rgb2xyz

(

const AVColorPrimariesDesc *

desc

)

Definition at line 92 of file csputils.c.

Referenced by ff_sws_get_adaptation(), ff_sws_ipt_rgb2lms(), and ff_sws_xyz2rgb().

ff_sws_xyz2rgb()

SwsMatrix3x3 ff_sws_xyz2rgb

(

const AVColorPrimariesDesc *

prim

)

Definition at line 130 of file csputils.c.

Referenced by ff_sws_get_adaptation().

apply_chromatic_adaptation()

static void apply_chromatic_adaptation ( AVWhitepointCoefficients  src, AVWhitepointCoefficients  dst, SwsMatrix3x3 *  mat  )

static

Definition at line 151 of file csputils.c.

Referenced by ff_sws_get_adaptation(), and ff_sws_ipt_rgb2lms().

ff_sws_get_adaptation()

SwsMatrix3x3 ff_sws_get_adaptation	(	const AVPrimaryCoefficients *	prim,
		AVWhitepointCoefficients	from,
		AVWhitepointCoefficients	to
	)

Definition at line 191 of file csputils.c.

Referenced by ff_sws_color_map_generate_dynamic().

ff_sws_ipt_rgb2lms()

SwsMatrix3x3 ff_sws_ipt_rgb2lms

(

const AVColorPrimariesDesc *

prim

)

Definition at line 219 of file csputils.c.

Referenced by ff_sws_ipt_lms2rgb(), and gamut_from_colorspace().

ff_sws_ipt_lms2rgb()

SwsMatrix3x3 ff_sws_ipt_lms2rgb

(

const AVColorPrimariesDesc *

prim

)

Definition at line 239 of file csputils.c.

Referenced by gamut_from_colorspace().

test_point_line()

static int test_point_line ( AVCIExy  p, AVCIExy  a, AVCIExy  b  )

static

Definition at line 247 of file csputils.c.

Referenced by test_point_gamut().

test_point_gamut()

static float test_point_gamut ( const AVCIExy  point, const AVPrimaryCoefficients *  prim  )

static

Definition at line 255 of file csputils.c.

Referenced by ff_prim_superset().

ff_prim_superset()

bool ff_prim_superset	(	const AVPrimaryCoefficients *	a,
		const AVPrimaryCoefficients *	b
	)

Returns true if 'b' is entirely contained in 'a'.

Useful for figuring out if colorimetric clipping will occur or not.

Definition at line 268 of file csputils.c.

Referenced by ff_sws_color_map_noop().

Variable Documentation

m_cat16

const SwsMatrix3x3 m_cat16

static

Initial value:

= {{
    {  0.401288f, 0.650173f, -0.051461f },
    { -0.250268f, 1.204414f,  0.045854f },
    { -0.002079f, 0.048952f,  0.953127f },
}}

Definition at line 138 of file csputils.c.

Referenced by apply_chromatic_adaptation().

m_cat16_inv

const SwsMatrix3x3 m_cat16_inv

static

Initial value:

= {{
    {  1.862068f, -1.011255f,  0.149187f },
    {  0.387527f,  0.621447f, -0.008974f },
    { -0.015841f, -0.034123f,  1.049964f },
}}

Definition at line 144 of file csputils.c.

Referenced by apply_chromatic_adaptation().

d65

const AVWhitepointCoefficients d65

static

Initial value:

= {
    .x = {3127, 10000},
    .y = {3290, 10000}
}

Definition at line 208 of file csputils.c.

Referenced by ff_sws_ipt_rgb2lms().

hpe

const SwsMatrix3x3 hpe

static

Initial value:

= {{ 
    {  0.40024f, 0.70760f, -0.08081f },
    { -0.22630f, 1.16532f,  0.04570f },
    {  0.00000f, 0.00000f,  0.91822f },
}}

Definition at line 213 of file csputils.c.

Referenced by ff_sws_ipt_rgb2lms().

ff_pq_eotf_lut

const float ff_pq_eotf_lut[PQ_LUT_SIZE+1]

Definition at line 275 of file csputils.c.

Referenced by pq_eotf().