1/*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "Resources.h"
9#include "SkCodec.h"
10#include "SkColorSpace.h"
11#include "SkColorSpace_Base.h"
12#include "SkColorSpace_XYZ.h"
13#include "SkColorSpacePriv.h"
14#include "Test.h"
15
16#include "png.h"
17
18static bool almost_equal(float a, float b) {
19    return SkTAbs(a - b) < 0.001f;
20}
21
22static void test_space(skiatest::Reporter* r, SkColorSpace* space,
23                       const float red[], const float green[], const float blue[],
24                       const SkGammaNamed expectedGamma) {
25
26    REPORTER_ASSERT(r, nullptr != space);
27    SkASSERT(SkColorSpace_Base::Type::kXYZ == as_CSB(space)->type());
28    SkColorSpace_XYZ* csXYZ = static_cast<SkColorSpace_XYZ*>(space);
29    REPORTER_ASSERT(r, expectedGamma == csXYZ->gammaNamed());
30
31    const SkMatrix44& mat = *csXYZ->toXYZD50();
32    const float src[] = {
33        1, 0, 0, 1,
34        0, 1, 0, 1,
35        0, 0, 1, 1,
36    };
37    const float* ref[3] = { red, green, blue };
38    float dst[4];
39    for (int i = 0; i < 3; ++i) {
40        mat.mapScalars(&src[i*4], dst);
41        REPORTER_ASSERT(r, almost_equal(ref[i][0], dst[0]));
42        REPORTER_ASSERT(r, almost_equal(ref[i][1], dst[1]));
43        REPORTER_ASSERT(r, almost_equal(ref[i][2], dst[2]));
44    }
45}
46
47static void test_path(skiatest::Reporter* r, const char* path,
48                      const float red[], const float green[], const float blue[],
49                      const SkGammaNamed expectedGamma) {
50    std::unique_ptr<SkStream> stream(GetResourceAsStream(path));
51    REPORTER_ASSERT(r, nullptr != stream);
52    if (!stream) {
53        return;
54    }
55
56    std::unique_ptr<SkCodec> codec(SkCodec::NewFromStream(stream.release()));
57    REPORTER_ASSERT(r, nullptr != codec);
58    if (!codec) {
59        return;
60    }
61
62    SkColorSpace* colorSpace = codec->getInfo().colorSpace();
63    test_space(r, colorSpace, red, green, blue, expectedGamma);
64}
65
66static constexpr float g_sRGB_XYZ[]{
67    0.4358f, 0.3853f, 0.1430f,    // Rx, Gx, Bx
68    0.2224f, 0.7170f, 0.0606f,    // Ry, Gy, Gz
69    0.0139f, 0.0971f, 0.7139f,    // Rz, Gz, Bz
70};
71
72static constexpr float g_sRGB_R[]{ 0.4358f, 0.2224f, 0.0139f };
73static constexpr float g_sRGB_G[]{ 0.3853f, 0.7170f, 0.0971f };
74static constexpr float g_sRGB_B[]{ 0.1430f, 0.0606f, 0.7139f };
75
76DEF_TEST(ColorSpace_sRGB, r) {
77    test_space(r, SkColorSpace::MakeSRGB().get(),
78               g_sRGB_R, g_sRGB_G, g_sRGB_B, kSRGB_SkGammaNamed);
79
80}
81
82DEF_TEST(ColorSpaceParseICCProfiles, r) {
83
84#if (PNG_LIBPNG_VER_MAJOR > 1) || (PNG_LIBPNG_VER_MAJOR == 1 && PNG_LIBPNG_VER_MINOR >= 6)
85    test_path(r, "color_wheel_with_profile.png", g_sRGB_R, g_sRGB_G, g_sRGB_B,
86              kSRGB_SkGammaNamed);
87#endif
88
89    const float red[] = { 0.385117f, 0.716904f, 0.0970612f };
90    const float green[] = { 0.143051f, 0.0606079f, 0.713913f };
91    const float blue[] = { 0.436035f, 0.222488f, 0.013916f };
92    test_path(r, "icc-v2-gbr.jpg", red, green, blue, k2Dot2Curve_SkGammaNamed);
93
94    test_path(r, "webp-color-profile-crash.webp",
95            red, green, blue, kNonStandard_SkGammaNamed);
96    test_path(r, "webp-color-profile-lossless.webp",
97            red, green, blue, kNonStandard_SkGammaNamed);
98    test_path(r, "webp-color-profile-lossy.webp",
99            red, green, blue, kNonStandard_SkGammaNamed);
100    test_path(r, "webp-color-profile-lossy-alpha.webp",
101            red, green, blue, kNonStandard_SkGammaNamed);
102}
103
104DEF_TEST(ColorSpaceSRGBCompare, r) {
105    // Create an sRGB color space by name
106    sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::MakeSRGB();
107
108    // Create an sRGB color space by value
109    SkMatrix44 srgbToxyzD50(SkMatrix44::kUninitialized_Constructor);
110    srgbToxyzD50.set3x3RowMajorf(g_sRGB_XYZ);
111    sk_sp<SkColorSpace> rgbColorSpace =
112            SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, srgbToxyzD50);
113    REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace);
114
115    SkColorSpaceTransferFn srgbFn;
116    srgbFn.fA = (1.0f / 1.055f);
117    srgbFn.fB = (0.055f / 1.055f);
118    srgbFn.fC = (1.0f / 12.92f);
119    srgbFn.fD = 0.04045f;
120    srgbFn.fE = 0.0f;
121    srgbFn.fF = 0.0f;
122    srgbFn.fG = 2.4f;
123    sk_sp<SkColorSpace> rgbColorSpace2 = SkColorSpace::MakeRGB(srgbFn, srgbToxyzD50);
124    REPORTER_ASSERT(r, rgbColorSpace2 == namedColorSpace);
125
126    // Change a single value from the sRGB matrix
127    srgbToxyzD50.set(2, 2, 0.5f);
128    sk_sp<SkColorSpace> strangeColorSpace =
129            SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, srgbToxyzD50);
130    REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace);
131}
132
133DEF_TEST(ColorSpaceSRGBLinearCompare, r) {
134    // Create the linear sRGB color space by name
135    sk_sp<SkColorSpace> namedColorSpace = SkColorSpace::MakeSRGBLinear();
136
137    // Create the linear sRGB color space via the sRGB color space's makeLinearGamma()
138    auto srgb = SkColorSpace::MakeSRGB();
139    auto srgbXYZ = static_cast<SkColorSpace_XYZ*>(srgb.get());
140    sk_sp<SkColorSpace> viaSrgbColorSpace = srgbXYZ->makeLinearGamma();
141    REPORTER_ASSERT(r, namedColorSpace == viaSrgbColorSpace);
142
143    // Create a linear sRGB color space by value
144    SkMatrix44 srgbToxyzD50(SkMatrix44::kUninitialized_Constructor);
145    srgbToxyzD50.set3x3RowMajorf(g_sRGB_XYZ);
146    sk_sp<SkColorSpace> rgbColorSpace =
147        SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma, srgbToxyzD50);
148    REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace);
149
150    SkColorSpaceTransferFn linearExpFn;
151    linearExpFn.fA = 1.0f;
152    linearExpFn.fB = 0.0f;
153    linearExpFn.fC = 0.0f;
154    linearExpFn.fD = 0.0f;
155    linearExpFn.fE = 0.0f;
156    linearExpFn.fF = 0.0f;
157    linearExpFn.fG = 1.0f;
158    sk_sp<SkColorSpace> rgbColorSpace2 = SkColorSpace::MakeRGB(linearExpFn, srgbToxyzD50);
159    REPORTER_ASSERT(r, rgbColorSpace2 == namedColorSpace);
160
161    SkColorSpaceTransferFn linearFn;
162    linearFn.fA = 0.0f;
163    linearFn.fB = 0.0f;
164    linearFn.fC = 1.0f;
165    linearFn.fD = 1.0f;
166    linearFn.fE = 0.0f;
167    linearFn.fF = 0.0f;
168    linearFn.fG = 0.0f;
169    sk_sp<SkColorSpace> rgbColorSpace3 = SkColorSpace::MakeRGB(linearFn, srgbToxyzD50);
170    REPORTER_ASSERT(r, rgbColorSpace3 == namedColorSpace);
171
172    // Change a single value from the sRGB matrix
173    srgbToxyzD50.set(2, 2, 0.5f);
174    sk_sp<SkColorSpace> strangeColorSpace =
175        SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma, srgbToxyzD50);
176    REPORTER_ASSERT(r, strangeColorSpace != namedColorSpace);
177}
178
179DEF_TEST(ColorSpaceAdobeCompare, r) {
180    // Create an sRGB color space by name
181    sk_sp<SkColorSpace> namedColorSpace =
182            SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named);
183
184    // Create an sRGB color space by value
185    SkMatrix44 adobeToxyzD50(SkMatrix44::kUninitialized_Constructor);
186    adobeToxyzD50.set3x3RowMajorf(gAdobeRGB_toXYZD50);
187
188    SkColorSpaceTransferFn fn;
189    fn.fA = 1.0f;
190    fn.fB = 0.0f;
191    fn.fC = 0.0f;
192    fn.fD = 0.0f;
193    fn.fE = 0.0f;
194    fn.fF = 0.0f;
195    fn.fG = 2.2f;
196    sk_sp<SkColorSpace> rgbColorSpace = SkColorSpace::MakeRGB(fn, adobeToxyzD50);
197    REPORTER_ASSERT(r, rgbColorSpace == namedColorSpace);
198}
199
200DEF_TEST(ColorSpace_Named, r) {
201    const struct {
202        SkColorSpace_Base::Named fNamed;
203        SkGammaNamed             fExpectedGamma;
204    } recs[] {
205        { SkColorSpace_Base::kSRGB_Named,       kSRGB_SkGammaNamed },
206        { SkColorSpace_Base::kAdobeRGB_Named,   k2Dot2Curve_SkGammaNamed },
207        { SkColorSpace_Base::kSRGBLinear_Named, kLinear_SkGammaNamed },
208    };
209
210    for (auto rec : recs) {
211        auto cs = SkColorSpace_Base::MakeNamed(rec.fNamed);
212        REPORTER_ASSERT(r, cs);
213        if (cs) {
214            SkASSERT(SkColorSpace_Base::Type::kXYZ == as_CSB(cs)->type());
215            SkColorSpace_XYZ* csXYZ = static_cast<SkColorSpace_XYZ*>(cs.get());
216            REPORTER_ASSERT(r, rec.fExpectedGamma == csXYZ->gammaNamed());
217        }
218    }
219
220    SkImageInfo info = SkImageInfo::MakeS32(10, 10, kPremul_SkAlphaType);
221    REPORTER_ASSERT(r, info.gammaCloseToSRGB());
222}
223
224static void test_serialize(skiatest::Reporter* r, SkColorSpace* space, bool isNamed) {
225    sk_sp<SkData> data1 = space->serialize();
226
227    size_t bytes = space->writeToMemory(nullptr);
228    sk_sp<SkData> data2 = SkData::MakeUninitialized(bytes);
229    space->writeToMemory(data2->writable_data());
230
231    sk_sp<SkColorSpace> newSpace1 = SkColorSpace::Deserialize(data1->data(), data1->size());
232    sk_sp<SkColorSpace> newSpace2 = SkColorSpace::Deserialize(data2->data(), data2->size());
233
234    if (isNamed) {
235        REPORTER_ASSERT(r, space == newSpace1.get());
236        REPORTER_ASSERT(r, space == newSpace2.get());
237    } else {
238        REPORTER_ASSERT(r, SkColorSpace::Equals(space, newSpace1.get()));
239        REPORTER_ASSERT(r, SkColorSpace::Equals(space, newSpace2.get()));
240    }
241}
242
243DEF_TEST(ColorSpace_Serialize, r) {
244    test_serialize(r, SkColorSpace::MakeSRGB().get(), true);
245    test_serialize(r, SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named).get(), true);
246    test_serialize(r, SkColorSpace::MakeSRGBLinear().get(), true);
247
248    sk_sp<SkData> monitorData = SkData::MakeFromFileName(
249            GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
250    test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false);
251    monitorData = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
252    test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false);
253    monitorData = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
254    test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false);
255    monitorData = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
256    test_serialize(r, SkColorSpace::MakeICC(monitorData->data(), monitorData->size()).get(), false);
257
258    SkColorSpaceTransferFn fn;
259    fn.fA = 1.0f;
260    fn.fB = 0.0f;
261    fn.fC = 1.0f;
262    fn.fD = 0.5f;
263    fn.fE = 0.0f;
264    fn.fF = 0.0f;
265    fn.fG = 1.0f;
266    SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor);
267    test_serialize(r, SkColorSpace::MakeRGB(fn, toXYZ).get(), false);
268}
269
270DEF_TEST(ColorSpace_Equals, r) {
271    sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
272    sk_sp<SkColorSpace> adobe = SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named);
273    sk_sp<SkData> data = SkData::MakeFromFileName(
274            GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
275    sk_sp<SkColorSpace> z30 = SkColorSpace::MakeICC(data->data(), data->size());
276    data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
277    sk_sp<SkColorSpace> z32 = SkColorSpace::MakeICC(data->data(), data->size());
278    data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
279    sk_sp<SkColorSpace> upperLeft = SkColorSpace::MakeICC(data->data(), data->size());
280    data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
281    sk_sp<SkColorSpace> upperRight = SkColorSpace::MakeICC(data->data(), data->size());
282
283    SkColorSpaceTransferFn fn;
284    fn.fA = 1.0f;
285    fn.fB = 0.0f;
286    fn.fC = 1.0f;
287    fn.fD = 0.5f;
288    fn.fE = 0.0f;
289    fn.fF = 0.0f;
290    fn.fG = 1.0f;
291    SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor);
292    sk_sp<SkColorSpace> rgb4 = SkColorSpace::MakeRGB(fn, toXYZ);
293
294    REPORTER_ASSERT(r, SkColorSpace::Equals(nullptr, nullptr));
295    REPORTER_ASSERT(r, SkColorSpace::Equals(srgb.get(), srgb.get()));
296    REPORTER_ASSERT(r, SkColorSpace::Equals(adobe.get(), adobe.get()));
297    REPORTER_ASSERT(r, SkColorSpace::Equals(z30.get(), z30.get()));
298    REPORTER_ASSERT(r, SkColorSpace::Equals(z32.get(), z32.get()));
299    REPORTER_ASSERT(r, SkColorSpace::Equals(upperLeft.get(), upperLeft.get()));
300    REPORTER_ASSERT(r, SkColorSpace::Equals(upperRight.get(), upperRight.get()));
301    REPORTER_ASSERT(r, SkColorSpace::Equals(rgb4.get(), rgb4.get()));
302
303    REPORTER_ASSERT(r, !SkColorSpace::Equals(nullptr, srgb.get()));
304    REPORTER_ASSERT(r, !SkColorSpace::Equals(srgb.get(), nullptr));
305    REPORTER_ASSERT(r, !SkColorSpace::Equals(adobe.get(), srgb.get()));
306    REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), srgb.get()));
307    REPORTER_ASSERT(r, !SkColorSpace::Equals(z32.get(), z30.get()));
308    REPORTER_ASSERT(r, !SkColorSpace::Equals(upperLeft.get(), srgb.get()));
309    REPORTER_ASSERT(r, !SkColorSpace::Equals(upperLeft.get(), upperRight.get()));
310    REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), upperRight.get()));
311    REPORTER_ASSERT(r, !SkColorSpace::Equals(upperRight.get(), adobe.get()));
312    REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), rgb4.get()));
313    REPORTER_ASSERT(r, !SkColorSpace::Equals(srgb.get(), rgb4.get()));
314}
315
316static inline bool matrix_almost_equal(const SkMatrix44& a, const SkMatrix44& b) {
317    return almost_equal(a.get(0, 0), b.get(0, 0)) &&
318           almost_equal(a.get(0, 1), b.get(0, 1)) &&
319           almost_equal(a.get(0, 2), b.get(0, 2)) &&
320           almost_equal(a.get(0, 3), b.get(0, 3)) &&
321           almost_equal(a.get(1, 0), b.get(1, 0)) &&
322           almost_equal(a.get(1, 1), b.get(1, 1)) &&
323           almost_equal(a.get(1, 2), b.get(1, 2)) &&
324           almost_equal(a.get(1, 3), b.get(1, 3)) &&
325           almost_equal(a.get(2, 0), b.get(2, 0)) &&
326           almost_equal(a.get(2, 1), b.get(2, 1)) &&
327           almost_equal(a.get(2, 2), b.get(2, 2)) &&
328           almost_equal(a.get(2, 3), b.get(2, 3)) &&
329           almost_equal(a.get(3, 0), b.get(3, 0)) &&
330           almost_equal(a.get(3, 1), b.get(3, 1)) &&
331           almost_equal(a.get(3, 2), b.get(3, 2)) &&
332           almost_equal(a.get(3, 3), b.get(3, 3));
333}
334
335static inline void check_primaries(skiatest::Reporter* r, const SkColorSpacePrimaries& primaries,
336                                   const SkMatrix44& reference) {
337    SkMatrix44 toXYZ(SkMatrix44::kUninitialized_Constructor);
338    bool result = primaries.toXYZD50(&toXYZ);
339    REPORTER_ASSERT(r, result);
340    REPORTER_ASSERT(r, matrix_almost_equal(toXYZ, reference));
341}
342
343DEF_TEST(ColorSpace_Primaries, r) {
344    // sRGB primaries (D65)
345    SkColorSpacePrimaries srgb;
346    srgb.fRX = 0.64f;
347    srgb.fRY = 0.33f;
348    srgb.fGX = 0.30f;
349    srgb.fGY = 0.60f;
350    srgb.fBX = 0.15f;
351    srgb.fBY = 0.06f;
352    srgb.fWX = 0.3127f;
353    srgb.fWY = 0.3290f;
354    SkMatrix44 srgbToXYZ(SkMatrix44::kUninitialized_Constructor);
355    bool result = srgb.toXYZD50(&srgbToXYZ);
356    REPORTER_ASSERT(r, result);
357
358    sk_sp<SkColorSpace> space = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
359                                                      srgbToXYZ);
360    REPORTER_ASSERT(r, SkColorSpace::MakeSRGB() == space);
361
362    // AdobeRGB primaries (D65)
363    SkColorSpacePrimaries adobe;
364    adobe.fRX = 0.64f;
365    adobe.fRY = 0.33f;
366    adobe.fGX = 0.21f;
367    adobe.fGY = 0.71f;
368    adobe.fBX = 0.15f;
369    adobe.fBY = 0.06f;
370    adobe.fWX = 0.3127f;
371    adobe.fWY = 0.3290f;
372    SkMatrix44 adobeToXYZ(SkMatrix44::kUninitialized_Constructor);
373    result = adobe.toXYZD50(&adobeToXYZ);
374    REPORTER_ASSERT(r, result);
375
376    SkColorSpaceTransferFn fn;
377    fn.fA = 1.0f;
378    fn.fB = fn.fC = fn.fD = fn.fE = fn.fF = 0.0f;
379    fn.fG = 2.2f;
380    space = SkColorSpace::MakeRGB(fn, adobeToXYZ);
381    REPORTER_ASSERT(r, SkColorSpace_Base::MakeNamed(SkColorSpace_Base::kAdobeRGB_Named) == space);
382
383    // ProPhoto (D50)
384    SkColorSpacePrimaries proPhoto;
385    proPhoto.fRX = 0.7347f;
386    proPhoto.fRY = 0.2653f;
387    proPhoto.fGX = 0.1596f;
388    proPhoto.fGY = 0.8404f;
389    proPhoto.fBX = 0.0366f;
390    proPhoto.fBY = 0.0001f;
391    proPhoto.fWX = 0.34567f;
392    proPhoto.fWY = 0.35850f;
393    SkMatrix44 proToXYZ(SkMatrix44::kUninitialized_Constructor);
394    proToXYZ.set3x3(0.7976749f, 0.2880402f, 0.0000000f,
395                    0.1351917f, 0.7118741f, 0.0000000f,
396                    0.0313534f, 0.0000857f, 0.8252100f);
397    check_primaries(r, proPhoto, proToXYZ);
398
399    // NTSC (C)
400    SkColorSpacePrimaries ntsc;
401    ntsc.fRX = 0.67f;
402    ntsc.fRY = 0.33f;
403    ntsc.fGX = 0.21f;
404    ntsc.fGY = 0.71f;
405    ntsc.fBX = 0.14f;
406    ntsc.fBY = 0.08f;
407    ntsc.fWX = 0.31006f;
408    ntsc.fWY = 0.31616f;
409    SkMatrix44 ntscToXYZ(SkMatrix44::kUninitialized_Constructor);
410    ntscToXYZ.set3x3(0.6343706f, 0.3109496f, -0.0011817f,
411                     0.1852204f, 0.5915984f, 0.0555518f,
412                     0.1446290f, 0.0974520f, 0.7708399f);
413    check_primaries(r, ntsc, ntscToXYZ);
414
415    // DCI P3 (D65)
416    SkColorSpacePrimaries p3;
417    p3.fRX = 0.680f;
418    p3.fRY = 0.320f;
419    p3.fGX = 0.265f;
420    p3.fGY = 0.690f;
421    p3.fBX = 0.150f;
422    p3.fBY = 0.060f;
423    p3.fWX = 0.3127f;
424    p3.fWY = 0.3290f;
425    space = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
426                                  SkColorSpace::kDCIP3_D65_Gamut);
427    SkMatrix44 reference(SkMatrix44::kUninitialized_Constructor);
428    SkAssertResult(space->toXYZD50(&reference));
429    check_primaries(r, p3, reference);
430
431    // Rec 2020 (D65)
432    SkColorSpacePrimaries rec2020;
433    rec2020.fRX = 0.708f;
434    rec2020.fRY = 0.292f;
435    rec2020.fGX = 0.170f;
436    rec2020.fGY = 0.797f;
437    rec2020.fBX = 0.131f;
438    rec2020.fBY = 0.046f;
439    rec2020.fWX = 0.3127f;
440    rec2020.fWY = 0.3290f;
441    space = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
442                                  SkColorSpace::kRec2020_Gamut);
443    SkAssertResult(space->toXYZD50(&reference));
444    check_primaries(r, rec2020, reference);
445}
446
447DEF_TEST(ColorSpace_InvalidICC, r) {
448    // This color space has a matrix that is not D50.
449    sk_sp<SkData> data = SkData::MakeFromFileName(
450            GetResourcePath("icc_profiles/SM2333SW.icc").c_str());
451    sk_sp<SkColorSpace> cs = SkColorSpace::MakeICC(data->data(), data->size());
452    REPORTER_ASSERT(r, !cs);
453}
454
455DEF_TEST(ColorSpace_MatrixHash, r) {
456    sk_sp<SkColorSpace> srgb = SkColorSpace::MakeSRGB();
457
458    SkColorSpaceTransferFn fn;
459    fn.fA = 1.0f;
460    fn.fB = 0.0f;
461    fn.fC = 0.0f;
462    fn.fD = 0.0f;
463    fn.fE = 0.0f;
464    fn.fF = 0.0f;
465    fn.fG = 3.0f;
466
467    SkMatrix44 srgbMat(SkMatrix44::kUninitialized_Constructor);
468    srgbMat.set3x3RowMajorf(gSRGB_toXYZD50);
469    sk_sp<SkColorSpace> strange = SkColorSpace::MakeRGB(fn, srgbMat);
470
471    REPORTER_ASSERT(r, *as_CSB(srgb)->toXYZD50() == *as_CSB(strange)->toXYZD50());
472    REPORTER_ASSERT(r, as_CSB(srgb)->toXYZD50Hash() == as_CSB(strange)->toXYZD50Hash());
473}
474
475DEF_TEST(ColorSpace_IsSRGB, r) {
476    sk_sp<SkColorSpace> srgb0 = SkColorSpace::MakeSRGB();
477
478    SkColorSpaceTransferFn fn;
479    fn.fA = 1.0f;
480    fn.fB = 0.0f;
481    fn.fC = 0.0f;
482    fn.fD = 0.0f;
483    fn.fE = 0.0f;
484    fn.fF = 0.0f;
485    fn.fG = 2.2f;
486    sk_sp<SkColorSpace> twoDotTwo = SkColorSpace::MakeRGB(fn, SkColorSpace::kSRGB_Gamut);
487
488    REPORTER_ASSERT(r, srgb0->isSRGB());
489    REPORTER_ASSERT(r, !twoDotTwo->isSRGB());
490}
491