SkColorSpacePriv.h File Reference

#include "include/core/SkColorSpace.h"
#include "include/private/base/SkTemplates.h"
#include "modules/skcms/skcms.h"

Go to the source code of this file.

Functions
static bool	color_space_almost_equal (float a, float b)
static bool	transfer_fn_almost_equal (float a, float b)
static bool	is_almost_srgb (const skcms_TransferFunction &coeffs)
static bool	is_almost_2dot2 (const skcms_TransferFunction &coeffs)
static bool	is_almost_linear (const skcms_TransferFunction &coeffs)
SkColorSpace *	sk_srgb_singleton ()
SkColorSpace *	sk_srgb_linear_singleton ()

Variables
static constexpr skcms_Matrix3x3	gNarrow_toXYZD50

Function Documentation

color_space_almost_equal()

static bool color_space_almost_equal ( float  a, float  b  )

inlinestatic

Definition at line 21 of file SkColorSpacePriv.h.

                                                              {
    return SkTAbs(a - b) < 0.01f;
}

is_almost_2dot2()

static bool is_almost_2dot2 ( const skcms_TransferFunction &  coeffs )

inlinestatic

Definition at line 41 of file SkColorSpacePriv.h.

                                                                         {
    return transfer_fn_almost_equal(1.0f, coeffs.a) &&
           transfer_fn_almost_equal(0.0f, coeffs.b) &&
           transfer_fn_almost_equal(0.0f, coeffs.e) &&
           transfer_fn_almost_equal(2.2f, coeffs.g) &&
           coeffs.d <= 0.0f;
}

is_almost_linear()

static bool is_almost_linear ( const skcms_TransferFunction &  coeffs )

inlinestatic

Definition at line 49 of file SkColorSpacePriv.h.

                                                                          {
    // OutputVal = InputVal ^ 1.0f
    const bool linearExp =
            transfer_fn_almost_equal(1.0f, coeffs.a) &&
            transfer_fn_almost_equal(0.0f, coeffs.b) &&
            transfer_fn_almost_equal(0.0f, coeffs.e) &&
            transfer_fn_almost_equal(1.0f, coeffs.g) &&
            coeffs.d <= 0.0f;
 
    // OutputVal = 1.0f * InputVal
    const bool linearFn =
            transfer_fn_almost_equal(1.0f, coeffs.c) &&
            transfer_fn_almost_equal(0.0f, coeffs.f) &&
            coeffs.d >= 1.0f;
 
    return linearExp || linearFn;
}

is_almost_srgb()

static bool is_almost_srgb ( const skcms_TransferFunction &  coeffs )

inlinestatic

Definition at line 31 of file SkColorSpacePriv.h.

                                                                        {
    return transfer_fn_almost_equal(SkNamedTransferFn::kSRGB.a, coeffs.a) &&
           transfer_fn_almost_equal(SkNamedTransferFn::kSRGB.b, coeffs.b) &&
           transfer_fn_almost_equal(SkNamedTransferFn::kSRGB.c, coeffs.c) &&
           transfer_fn_almost_equal(SkNamedTransferFn::kSRGB.d, coeffs.d) &&
           transfer_fn_almost_equal(SkNamedTransferFn::kSRGB.e, coeffs.e) &&
           transfer_fn_almost_equal(SkNamedTransferFn::kSRGB.f, coeffs.f) &&
           transfer_fn_almost_equal(SkNamedTransferFn::kSRGB.g, coeffs.g);
}

sk_srgb_linear_singleton()

SkColorSpace * sk_srgb_linear_singleton

(

)

Definition at line 81 of file SkColorSpace.cpp.

                                         {
    static SkColorSpace* cs = SkColorSpaceSingletonFactory::Make(SkNamedTransferFn::kLinear,
                                                                 SkNamedGamut::kSRGB);
    return cs;
}

sk_srgb_singleton()

SkColorSpace * sk_srgb_singleton

(

)

Definition at line 75 of file SkColorSpace.cpp.

                                  {
    static SkColorSpace* cs = SkColorSpaceSingletonFactory::Make(SkNamedTransferFn::kSRGB,
                                                                 SkNamedGamut::kSRGB);
    return cs;
}

transfer_fn_almost_equal()

static bool transfer_fn_almost_equal ( float  a, float  b  )

inlinestatic

Definition at line 27 of file SkColorSpacePriv.h.

                                                              {
    return SkTAbs(a - b) < 0.001f;
}

Variable Documentation

gNarrow_toXYZD50

constexpr skcms_Matrix3x3 gNarrow_toXYZD50

staticconstexpr

Initial value:

= {{
    { 0.190974f,  0.404865f,  0.368380f },
    { 0.114746f,  0.582937f,  0.302318f },
    { 0.032925f,  0.153615f,  0.638669f },
}}

Definition at line 15 of file SkColorSpacePriv.h.

                                                    {{
    { 0.190974f,  0.404865f,  0.368380f },
    { 0.114746f,  0.582937f,  0.302318f },
    { 0.032925f,  0.153615f,  0.638669f },
}};