csp.c File Reference

#include <stdlib.h>
#include "attributes.h"
#include "csp.h"
#include "pixfmt.h"
#include "rational.h"

Go to the source code of this file.

Macros
#define	AVR(d)   { (int)(d * 100000 + 0.5), 100000 }
#define	WP_D65   { AVR(0.3127), AVR(0.3290) }
#define	WP_C   { AVR(0.3100), AVR(0.3160) }
#define	WP_DCI   { AVR(0.3140), AVR(0.3510) }
#define	WP_E   { {1, 3}, {1, 3} }

Functions
const struct 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...
static av_always_inline AVRational	abs_sub_q (AVRational r1, AVRational r2)
enum AVColorPrimaries	av_csp_primaries_id_from_desc (const AVColorPrimariesDesc *prm)
	Detects which enum AVColorPrimaries constant corresponds to the given complete gamut description. More...

Variables
static const struct AVLumaCoefficients	luma_coefficients [AVCOL_SPC_NB]
static const AVColorPrimariesDesc	color_primaries [AVCOL_PRI_NB]

Macro Definition Documentation

AVR

#define AVR

(

d

)

{ (int)(d * 100000 + 0.5), 100000 }

Definition at line 33 of file csp.c.

WP_D65

#define WP_D65   { AVR(0.3127), AVR(0.3290) }

Definition at line 66 of file csp.c.

WP_C

#define WP_C   { AVR(0.3100), AVR(0.3160) }

Definition at line 67 of file csp.c.

WP_DCI

#define WP_DCI   { AVR(0.3140), AVR(0.3510) }

Definition at line 68 of file csp.c.

WP_E

#define WP_E   { {1, 3}, {1, 3} }

Definition at line 69 of file csp.c.

Function Documentation

abs_sub_q()

static av_always_inline AVRational abs_sub_q ( AVRational  r1, AVRational  r2  )

static

Definition at line 98 of file csp.c.

Referenced by av_csp_primaries_id_from_desc().

Variable Documentation

luma_coefficients

const struct AVLumaCoefficients luma_coefficients[AVCOL_SPC_NB]

static

Initial value:

= {
    [AVCOL_SPC_FCC]        = { AVR(0.30),   AVR(0.59),   AVR(0.11)   },
    [AVCOL_SPC_BT470BG]    = { AVR(0.299),  AVR(0.587),  AVR(0.114)  },
    [AVCOL_SPC_SMPTE170M]  = { AVR(0.299),  AVR(0.587),  AVR(0.114)  },
    [AVCOL_SPC_BT709]      = { AVR(0.2126), AVR(0.7152), AVR(0.0722) },
    [AVCOL_SPC_SMPTE240M]  = { AVR(0.212),  AVR(0.701),  AVR(0.087)  },
    [AVCOL_SPC_YCOCG]      = { AVR(0.25),   AVR(0.5),    AVR(0.25)   },
    [AVCOL_SPC_RGB]        = { AVR(1),      AVR(1),      AVR(1)      },
    [AVCOL_SPC_BT2020_NCL] = { AVR(0.2627), AVR(0.6780), AVR(0.0593) },
    [AVCOL_SPC_BT2020_CL]  = { AVR(0.2627), AVR(0.6780), AVR(0.0593) },
}

Definition at line 41 of file csp.c.

Referenced by av_csp_luma_coeffs_from_avcsp().

color_primaries

const AVColorPrimariesDesc color_primaries[AVCOL_PRI_NB]

static

Initial value:

= {
    [AVCOL_PRI_BT709]     = { WP_D65, { { AVR(0.640), AVR(0.330) }, { AVR(0.300), AVR(0.600) }, { AVR(0.150), AVR(0.060) } } },
    [AVCOL_PRI_BT470M]    = { WP_C,   { { AVR(0.670), AVR(0.330) }, { AVR(0.210), AVR(0.710) }, { AVR(0.140), AVR(0.080) } } },
    [AVCOL_PRI_BT470BG]   = { WP_D65, { { AVR(0.640), AVR(0.330) }, { AVR(0.290), AVR(0.600) }, { AVR(0.150), AVR(0.060) } } },
    [AVCOL_PRI_SMPTE170M] = { WP_D65, { { AVR(0.630), AVR(0.340) }, { AVR(0.310), AVR(0.595) }, { AVR(0.155), AVR(0.070) } } },
    [AVCOL_PRI_SMPTE240M] = { WP_D65, { { AVR(0.630), AVR(0.340) }, { AVR(0.310), AVR(0.595) }, { AVR(0.155), AVR(0.070) } } },
    [AVCOL_PRI_SMPTE428]  = { WP_E,   { { AVR(0.735), AVR(0.265) }, { AVR(0.274), AVR(0.718) }, { AVR(0.167), AVR(0.009) } } },
    [AVCOL_PRI_SMPTE431]  = { WP_DCI, { { AVR(0.680), AVR(0.320) }, { AVR(0.265), AVR(0.690) }, { AVR(0.150), AVR(0.060) } } },
    [AVCOL_PRI_SMPTE432]  = { WP_D65, { { AVR(0.680), AVR(0.320) }, { AVR(0.265), AVR(0.690) }, { AVR(0.150), AVR(0.060) } } },
    [AVCOL_PRI_FILM]      = { WP_C,   { { AVR(0.681), AVR(0.319) }, { AVR(0.243), AVR(0.692) }, { AVR(0.145), AVR(0.049) } } },
    [AVCOL_PRI_BT2020]    = { WP_D65, { { AVR(0.708), AVR(0.292) }, { AVR(0.170), AVR(0.797) }, { AVR(0.131), AVR(0.046) } } },
    [AVCOL_PRI_JEDEC_P22] = { WP_D65, { { AVR(0.630), AVR(0.340) }, { AVR(0.295), AVR(0.605) }, { AVR(0.155), AVR(0.077) } } },
}

Definition at line 71 of file csp.c.

Referenced by av_csp_primaries_desc_from_id(), av_csp_primaries_id_from_desc(), color_config(), convert_primaries(), mov_read_colr(), mov_read_vpcc(), print_primaries(), scale_vaapi_init(), and tonemap_vaapi_init().