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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( | 20 sk_sp<SkColorSpace> space(new SkColorSpace_Base(nullptr, gammas, SkMatri
x::I(), nullptr)); |
21 nullptr, SkColorSpace::kNonStandard_GammaNamed, gammas, SkMatrix
::I(), nullptr)); | |
22 return SkColorSpaceXform::New(space, space); | 21 return SkColorSpaceXform::New(space, space); |
23 } | 22 } |
24 }; | 23 }; |
25 | 24 |
26 static bool almost_equal(int x, int y) { | 25 static bool almost_equal(int x, int y) { |
27 return SkTAbs(x - y) <= 1; | 26 return SkTAbs(x - y) <= 1; |
28 } | 27 } |
29 | 28 |
30 static void test_identity_xform(skiatest::Reporter* r, const sk_sp<SkGammas>& ga
mmas) { | 29 static void test_identity_xform(skiatest::Reporter* r, const sk_sp<SkGammas>& ga
mmas) { |
31 // Arbitrary set of 10 pixels | 30 // Arbitrary set of 10 pixels |
(...skipping 16 matching lines...) Expand all Loading... |
48 SkGetPackedG32(dstPixels[i]))); | 47 SkGetPackedG32(dstPixels[i]))); |
49 REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 16) & 0xFF), | 48 REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 16) & 0xFF), |
50 SkGetPackedB32(dstPixels[i]))); | 49 SkGetPackedB32(dstPixels[i]))); |
51 REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 24) & 0xFF), | 50 REPORTER_ASSERT(r, almost_equal(((srcPixels[i] >> 24) & 0xFF), |
52 SkGetPackedA32(dstPixels[i]))); | 51 SkGetPackedA32(dstPixels[i]))); |
53 } | 52 } |
54 } | 53 } |
55 | 54 |
56 DEF_TEST(ColorSpaceXform_TableGamma, r) { | 55 DEF_TEST(ColorSpaceXform_TableGamma, r) { |
57 // Lookup-table based gamma curves | 56 // Lookup-table based gamma curves |
| 57 SkGammaCurve red, green, blue; |
58 constexpr size_t tableSize = 10; | 58 constexpr size_t tableSize = 10; |
59 void* memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(float) * tableSize)
; | 59 red.fTable = std::unique_ptr<float[]>(new float[tableSize]); |
60 sk_sp<SkGammas> gammas = sk_sp<SkGammas>(new (memory) SkGammas()); | 60 green.fTable = std::unique_ptr<float[]>(new float[tableSize]); |
61 gammas->fRedType = gammas->fGreenType = gammas->fBlueType = SkGammas::Type::
kTable_Type; | 61 blue.fTable = std::unique_ptr<float[]>(new float[tableSize]); |
62 gammas->fRedData.fTable.fSize = gammas->fGreenData.fTable.fSize = | 62 red.fTableSize = green.fTableSize = blue.fTableSize = 10; |
63 gammas->fBlueData.fTable.fSize = tableSize; | 63 red.fTable[0] = green.fTable[0] = blue.fTable[0] = 0.00f; |
64 gammas->fRedData.fTable.fOffset = gammas->fGreenData.fTable.fOffset = | 64 red.fTable[1] = green.fTable[1] = blue.fTable[1] = 0.05f; |
65 gammas->fBlueData.fTable.fOffset = 0; | 65 red.fTable[2] = green.fTable[2] = blue.fTable[2] = 0.10f; |
66 float* table = SkTAddOffset<float>(memory, sizeof(SkGammas)); | 66 red.fTable[3] = green.fTable[3] = blue.fTable[3] = 0.15f; |
67 | 67 red.fTable[4] = green.fTable[4] = blue.fTable[4] = 0.25f; |
68 table[0] = 0.00f; | 68 red.fTable[5] = green.fTable[5] = blue.fTable[5] = 0.35f; |
69 table[1] = 0.05f; | 69 red.fTable[6] = green.fTable[6] = blue.fTable[6] = 0.45f; |
70 table[2] = 0.10f; | 70 red.fTable[7] = green.fTable[7] = blue.fTable[7] = 0.60f; |
71 table[3] = 0.15f; | 71 red.fTable[8] = green.fTable[8] = blue.fTable[8] = 0.75f; |
72 table[4] = 0.25f; | 72 red.fTable[9] = green.fTable[9] = blue.fTable[9] = 1.00f; |
73 table[5] = 0.35f; | 73 sk_sp<SkGammas> gammas = |
74 table[6] = 0.45f; | 74 sk_make_sp<SkGammas>(std::move(red), std::move(green), std::move(blu
e)); |
75 table[7] = 0.60f; | |
76 table[8] = 0.75f; | |
77 table[9] = 1.00f; | |
78 test_identity_xform(r, gammas); | 75 test_identity_xform(r, gammas); |
79 } | 76 } |
80 | 77 |
81 DEF_TEST(ColorSpaceXform_ParametricGamma, r) { | 78 DEF_TEST(ColorSpaceXform_ParametricGamma, r) { |
82 // Parametric gamma curves | 79 // Parametric gamma curves |
83 void* memory = sk_malloc_throw(sizeof(SkGammas) + sizeof(SkGammas::Params)); | 80 SkGammaCurve red, green, blue; |
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)); | |
89 | 81 |
90 // Interval, switch xforms at 0.0031308f | 82 // Interval, switch xforms at 0.0031308f |
91 params->fD = 0.04045f; | 83 red.fD = green.fD = blue.fD = 0.04045f; |
92 | 84 |
93 // First equation: | 85 // First equation: |
94 params->fE = 1.0f / 12.92f; | 86 red.fE = green.fE = blue.fE = 1.0f / 12.92f; |
95 params->fF = 0.0f; | |
96 | 87 |
97 // Second equation: | 88 // Second equation: |
98 // Note that the function is continuous (it's actually sRGB). | 89 // Note that the function is continuous (it's actually sRGB). |
99 params->fA = 1.0f / 1.055f; | 90 red.fA = green.fA = blue.fA = 1.0f / 1.055f; |
100 params->fB = 0.055f / 1.055f; | 91 red.fB = green.fB = blue.fB = 0.055f / 1.055f; |
101 params->fC = 0.0f; | 92 red.fC = green.fC = blue.fC = 0.0f; |
102 params->fG = 2.4f; | 93 red.fG = green.fG = blue.fG = 2.4f; |
| 94 sk_sp<SkGammas> gammas = |
| 95 sk_make_sp<SkGammas>(std::move(red), std::move(green), std::move(blu
e)); |
103 test_identity_xform(r, gammas); | 96 test_identity_xform(r, gammas); |
104 } | 97 } |
105 | 98 |
106 DEF_TEST(ColorSpaceXform_ExponentialGamma, r) { | 99 DEF_TEST(ColorSpaceXform_ExponentialGamma, r) { |
107 // Exponential gamma curves | 100 // Exponential gamma curves |
108 sk_sp<SkGammas> gammas = sk_sp<SkGammas>(new SkGammas()); | 101 SkGammaCurve red, green, blue; |
109 gammas->fRedType = gammas->fGreenType = gammas->fBlueType = SkGammas::Type::
kValue_Type; | 102 red.fValue = green.fValue = blue.fValue = 1.4f; |
110 gammas->fRedData.fValue = gammas->fGreenData.fValue = gammas->fBlueData.fVal
ue = 1.4f; | 103 sk_sp<SkGammas> gammas = |
| 104 sk_make_sp<SkGammas>(std::move(red), std::move(green), std::move(blu
e)); |
111 test_identity_xform(r, gammas); | 105 test_identity_xform(r, gammas); |
112 } | 106 } |
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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