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1 /* | 1 /* |
2 * Copyright 2016 Google Inc. | 2 * Copyright 2016 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "Resources.h" | 8 #include "Resources.h" |
9 #include "SkCodec.h" | 9 #include "SkCodec.h" |
10 #include "SkColorPriv.h" | 10 #include "SkColorPriv.h" |
11 #include "SkColorSpace.h" | 11 #include "SkColorSpace.h" |
12 #include "SkColorSpace_Base.h" | 12 #include "SkColorSpace_Base.h" |
13 #include "SkColorSpaceXform.h" | 13 #include "SkColorSpaceXform.h" |
14 #include "Test.h" | 14 #include "Test.h" |
15 | 15 |
16 class ColorSpaceXformTest { | 16 class ColorSpaceXformTest { |
17 public: | 17 public: |
18 static std::unique_ptr<SkColorSpaceXform> CreateIdentityXform(const sk_sp<Sk
Gammas>& gammas) { | 18 static std::unique_ptr<SkColorSpaceXform> CreateIdentityXform(const sk_sp<Sk
Gammas>& gammas) { |
19 // Logically we can pass any matrix here. For simplicty, pass I(), i.e.
D50 XYZ gamut. | 19 // Logically we can pass any matrix here. For simplicty, pass I(), i.e.
D50 XYZ gamut. |
20 sk_sp<SkColorSpace> space(new SkColorSpace_Base(nullptr, gammas, SkMatri
x::I(), nullptr)); | 20 sk_sp<SkColorSpace> space(new SkColorSpace_Base( |
| 21 nullptr, SkColorSpace::kNonStandard_GammaNamed, gammas, SkMatrix
::I(), nullptr)); |
21 return SkColorSpaceXform::New(space, space); | 22 return SkColorSpaceXform::New(space, space); |
22 } | 23 } |
23 }; | 24 }; |
24 | 25 |
25 static bool almost_equal(int x, int y) { | 26 static bool almost_equal(int x, int y) { |
26 return SkTAbs(x - y) <= 1; | 27 return SkTAbs(x - y) <= 1; |
27 } | 28 } |
28 | 29 |
29 static void test_identity_xform(skiatest::Reporter* r, const sk_sp<SkGammas>& ga
mmas) { | 30 static void test_identity_xform(skiatest::Reporter* r, const sk_sp<SkGammas>& ga
mmas) { |
30 // Arbitrary set of 10 pixels | 31 // Arbitrary set of 10 pixels |
(...skipping 16 matching lines...) Expand all Loading... |
47 SkGetPackedG32(dstPixels[i]))); | 48 SkGetPackedG32(dstPixels[i]))); |
48 REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 16) & 0xFF), | 49 REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 16) & 0xFF), |
49 SkGetPackedB32(dstPixels[i]))); | 50 SkGetPackedB32(dstPixels[i]))); |
50 REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 24) & 0xFF), | 51 REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 24) & 0xFF), |
51 SkGetPackedA32(dstPixels[i]))); | 52 SkGetPackedA32(dstPixels[i]))); |
52 } | 53 } |
53 } | 54 } |
54 | 55 |
55 DEF_TEST(ColorSpaceXform_TableGamma, r) { | 56 DEF_TEST(ColorSpaceXform_TableGamma, r) { |
56 // Lookup-table based gamma curves | 57 // Lookup-table based gamma curves |
57 SkGammaCurve red, green, blue; | |
58 constexpr size_t tableSize = 10; | 58 constexpr size_t tableSize = 10; |
59 red.fTable = std::unique_ptr<float[]>(new float[tableSize]); | 59 void* memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(float) * tableSize)
; |
60 green.fTable = std::unique_ptr<float[]>(new float[tableSize]); | 60 sk_sp<SkGammas> gammas = sk_sp<SkGammas>(new (memory) SkGammas()); |
61 blue.fTable = std::unique_ptr<float[]>(new float[tableSize]); | 61 gammas->fRedType = gammas->fGreenType = gammas->fBlueType = SkGammas::Type::
kTable_Type; |
62 red.fTableSize = green.fTableSize = blue.fTableSize = 10; | 62 gammas->fRedData.fTable.fSize = gammas->fGreenData.fTable.fSize = |
63 red.fTable[0] = green.fTable[0] = blue.fTable[0] = 0.00f; | 63 gammas->fBlueData.fTable.fSize = tableSize; |
64 red.fTable[1] = green.fTable[1] = blue.fTable[1] = 0.05f; | 64 gammas->fRedData.fTable.fOffset = gammas->fGreenData.fTable.fOffset = |
65 red.fTable[2] = green.fTable[2] = blue.fTable[2] = 0.10f; | 65 gammas->fBlueData.fTable.fOffset = 0; |
66 red.fTable[3] = green.fTable[3] = blue.fTable[3] = 0.15f; | 66 float* table = SkTAddOffset<float>(memory, sizeof(SkGammas)); |
67 red.fTable[4] = green.fTable[4] = blue.fTable[4] = 0.25f; | 67 |
68 red.fTable[5] = green.fTable[5] = blue.fTable[5] = 0.35f; | 68 table[0] = 0.00f; |
69 red.fTable[6] = green.fTable[6] = blue.fTable[6] = 0.45f; | 69 table[1] = 0.05f; |
70 red.fTable[7] = green.fTable[7] = blue.fTable[7] = 0.60f; | 70 table[2] = 0.10f; |
71 red.fTable[8] = green.fTable[8] = blue.fTable[8] = 0.75f; | 71 table[3] = 0.15f; |
72 red.fTable[9] = green.fTable[9] = blue.fTable[9] = 1.00f; | 72 table[4] = 0.25f; |
73 sk_sp<SkGammas> gammas = | 73 table[5] = 0.35f; |
74 sk_make_sp<SkGammas>(std::move(red), std::move(green), std::move(blu
e)); | 74 table[6] = 0.45f; |
| 75 table[7] = 0.60f; |
| 76 table[8] = 0.75f; |
| 77 table[9] = 1.00f; |
75 test_identity_xform(r, gammas); | 78 test_identity_xform(r, gammas); |
76 } | 79 } |
77 | 80 |
78 DEF_TEST(ColorSpaceXform_ParametricGamma, r) { | 81 DEF_TEST(ColorSpaceXform_ParametricGamma, r) { |
79 // Parametric gamma curves | 82 // Parametric gamma curves |
80 SkGammaCurve red, green, blue; | 83 void* memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(SkGammas::Params)); |
| 84 sk_sp<SkGammas> gammas = sk_sp<SkGammas>(new (memory) SkGammas()); |
| 85 gammas->fRedType = gammas->fGreenType = gammas->fBlueType = SkGammas::Type::
kParam_Type; |
| 86 gammas->fRedData.fParamOffset = gammas->fGreenData.fParamOffset = |
| 87 gammas->fBlueData.fParamOffset = 0; |
| 88 SkGammas::Params* params = SkTAddOffset<SkGammas::Params>(memory, sizeof(SkG
ammas)); |
81 | 89 |
82 // Interval, switch xforms at 0.0031308f | 90 // Interval, switch xforms at 0.0031308f |
83 red.fD = green.fD = blue.fD = 0.04045f; | 91 params->fD = 0.04045f; |
84 | 92 |
85 // First equation: | 93 // First equation: |
86 red.fE = green.fE = blue.fE = 1.0f / 12.92f; | 94 params->fE = 1.0f / 12.92f; |
| 95 params->fF = 0.0f; |
87 | 96 |
88 // Second equation: | 97 // Second equation: |
89 // Note that the function is continuous (it's actually sRGB). | 98 // Note that the function is continuous (it's actually sRGB). |
90 red.fA = green.fA = blue.fA = 1.0f / 1.055f; | 99 params->fA = 1.0f / 1.055f; |
91 red.fB = green.fB = blue.fB = 0.055f / 1.055f; | 100 params->fB = 0.055f / 1.055f; |
92 red.fC = green.fC = blue.fC = 0.0f; | 101 params->fC = 0.0f; |
93 red.fG = green.fG = blue.fG = 2.4f; | 102 params->fG = 2.4f; |
94 sk_sp<SkGammas> gammas = | |
95 sk_make_sp<SkGammas>(std::move(red), std::move(green), std::move(blu
e)); | |
96 test_identity_xform(r, gammas); | 103 test_identity_xform(r, gammas); |
97 } | 104 } |
98 | 105 |
99 DEF_TEST(ColorSpaceXform_ExponentialGamma, r) { | 106 DEF_TEST(ColorSpaceXform_ExponentialGamma, r) { |
100 // Exponential gamma curves | 107 // Exponential gamma curves |
101 SkGammaCurve red, green, blue; | 108 sk_sp<SkGammas> gammas = sk_sp<SkGammas>(new SkGammas()); |
102 red.fValue = green.fValue = blue.fValue = 1.4f; | 109 gammas->fRedType = gammas->fGreenType = gammas->fBlueType = SkGammas::Type::
kValue_Type; |
103 sk_sp<SkGammas> gammas = | 110 gammas->fRedData.fValue = gammas->fGreenData.fValue = gammas->fBlueData.fVal
ue = 1.4f; |
104 sk_make_sp<SkGammas>(std::move(red), std::move(green), std::move(blu
e)); | |
105 test_identity_xform(r, gammas); | 111 test_identity_xform(r, gammas); |
106 } | 112 } |
| 113 |
| 114 DEF_TEST(ColorSpaceXform_NonMatchingGamma, r) { |
| 115 constexpr size_t tableSize = 10; |
| 116 void* memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(float) * tableSize
+ |
| 117 sizeof(SkGammas::Params)); |
| 118 sk_sp<SkGammas> gammas = sk_sp<SkGammas>(new (memory) SkGammas()); |
| 119 |
| 120 float* table = SkTAddOffset<float>(memory, sizeof(SkGammas)); |
| 121 table[0] = 0.00f; |
| 122 table[1] = 0.15f; |
| 123 table[2] = 0.20f; |
| 124 table[3] = 0.25f; |
| 125 table[4] = 0.35f; |
| 126 table[5] = 0.45f; |
| 127 table[6] = 0.55f; |
| 128 table[7] = 0.70f; |
| 129 table[8] = 0.85f; |
| 130 table[9] = 1.00f; |
| 131 |
| 132 SkGammas::Params* params = SkTAddOffset<SkGammas::Params>(memory, sizeof(SkG
ammas) + |
| 133 sizeof(float) * ta
bleSize); |
| 134 params->fA = 1.0f / 1.055f; |
| 135 params->fB = 0.055f / 1.055f; |
| 136 params->fC = 0.0f; |
| 137 params->fD = 0.04045f; |
| 138 params->fE = 1.0f / 12.92f; |
| 139 params->fF = 0.0f; |
| 140 params->fG = 2.4f; |
| 141 |
| 142 gammas->fRedType = SkGammas::Type::kValue_Type; |
| 143 gammas->fRedData.fValue = 1.2f; |
| 144 |
| 145 gammas->fGreenType = SkGammas::Type::kTable_Type; |
| 146 gammas->fGreenData.fTable.fSize = tableSize; |
| 147 gammas->fGreenData.fTable.fOffset = 0; |
| 148 |
| 149 gammas->fBlueType = SkGammas::Type::kParam_Type; |
| 150 gammas->fBlueData.fParamOffset = sizeof(float) * tableSize; |
| 151 |
| 152 test_identity_xform(r, gammas); |
| 153 } |
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