Fix Equals and serialization for rare pngs

tests/ColorSpaceTest.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Resources.h"
 #include "SkCodec.h"
 #include "SkColorSpace.h"
@@ skipping 155 matching lines @@
             } else {
                 REPORTER_ASSERT(r, SkColorSpace::k2Dot2Curve_GammaNamed == cs->gammaNamed());
             }
         }
     }
 
     SkImageInfo info = SkImageInfo::MakeS32(10, 10, kPremul_SkAlphaType);
     REPORTER_ASSERT(r, info.gammaCloseToSRGB());
 }
 
-static void matrix_equals(skiatest::Reporter* r, SkColorSpace* space1, SkColorSpace* space2) {
-    REPORTER_ASSERT(r, space1->xyz().getFloat(0, 0) == space2->xyz().getFloat(0, 0));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(0, 1) == space2->xyz().getFloat(0, 1));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(0, 2) == space2->xyz().getFloat(0, 2));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(0, 3) == space2->xyz().getFloat(0, 3));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(1, 0) == space2->xyz().getFloat(1, 0));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(1, 1) == space2->xyz().getFloat(1, 1));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(1, 2) == space2->xyz().getFloat(1, 2));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(1, 3) == space2->xyz().getFloat(1, 3));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(2, 0) == space2->xyz().getFloat(2, 0));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(2, 1) == space2->xyz().getFloat(2, 1));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(2, 2) == space2->xyz().getFloat(2, 2));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(2, 3) == space2->xyz().getFloat(2, 3));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(3, 0) == space2->xyz().getFloat(3, 0));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(3, 1) == space2->xyz().getFloat(3, 1));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(3, 2) == space2->xyz().getFloat(3, 2));
-    REPORTER_ASSERT(r, space1->xyz().getFloat(3, 3) == space2->xyz().getFloat(3, 3));
-}
-
 static void test_serialize(skiatest::Reporter* r, SkColorSpace* space, bool isNamed) {
     sk_sp<SkData> data1 = space->serialize();
 
     size_t bytes = space->writeToMemory(nullptr);
     sk_sp<SkData> data2 = SkData::MakeUninitialized(bytes);
     space->writeToMemory(data2->writable_data());
 
     sk_sp<SkColorSpace> newSpace1 = SkColorSpace::Deserialize(data1->data(), data1->size());
     sk_sp<SkColorSpace> newSpace2 = SkColorSpace::Deserialize(data2->data(), data2->size());
 
     if (isNamed) {
         REPORTER_ASSERT(r, space == newSpace1.get());
         REPORTER_ASSERT(r, space == newSpace2.get());
     } else {
-        REPORTER_ASSERT(r, space->gammaNamed() == newSpace1->gammaNamed());
-        REPORTER_ASSERT(r, space->gammaNamed() == newSpace2->gammaNamed());
-        matrix_equals(r, space, newSpace1.get());
-        matrix_equals(r, space, newSpace2.get());
+        REPORTER_ASSERT(r, SkColorSpace::Equals(space, newSpace1.get()));
+        REPORTER_ASSERT(r, SkColorSpace::Equals(space, newSpace2.get()));
     }
 }
 
 DEF_TEST(ColorSpace_Serialize, r) {
     test_serialize(r, SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named).get(), true);
     test_serialize(r, SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named).get(), true);
 
     sk_sp<SkData> monitorData = SkData::MakeFromFileName(
             GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
     test_serialize(r, SkColorSpace::NewICC(monitorData->data(), monitorData->size()).get(), false);
     monitorData = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
     test_serialize(r, SkColorSpace::NewICC(monitorData->data(), monitorData->size()).get(), false);
     monitorData = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
     test_serialize(r, SkColorSpace::NewICC(monitorData->data(), monitorData->size()).get(), false);
     monitorData = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
     test_serialize(r, SkColorSpace::NewICC(monitorData->data(), monitorData->size()).get(), false);
+
+    const float gammas[] = { 1.1f, 1.2f, 1.7f, };
+    SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor);
+    test_serialize(r, SkColorSpace_Base::NewRGB(gammas, toXYZ).get(), false);
 }
 
 DEF_TEST(ColorSpace_Equals, r) {
     sk_sp<SkColorSpace> srgb = SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named);
     sk_sp<SkColorSpace> adobe = SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named);
     sk_sp<SkData> data = SkData::MakeFromFileName(
             GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
     sk_sp<SkColorSpace> z30 = SkColorSpace::NewICC(data->data(), data->size());
     data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
     sk_sp<SkColorSpace> z32 = SkColorSpace::NewICC(data->data(), data->size());
     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
     sk_sp<SkColorSpace> upperLeft = SkColorSpace::NewICC(data->data(), data->size());
     data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
     sk_sp<SkColorSpace> upperRight = SkColorSpace::NewICC(data->data(), data->size());
+    const float gammas1[] = { 1.1f, 1.2f, 1.3f, };
+    const float gammas2[] = { 1.1f, 1.2f, 1.7f, };
+    SkMatrix44 toXYZ(SkMatrix44::kIdentity_Constructor);
+    sk_sp<SkColorSpace> rgb1 = SkColorSpace_Base::NewRGB(gammas1, toXYZ);
+    sk_sp<SkColorSpace> rgb2 = SkColorSpace_Base::NewRGB(gammas2, toXYZ);
+    sk_sp<SkColorSpace> rgb3 = SkColorSpace_Base::NewRGB(gammas1, toXYZ);
 
     REPORTER_ASSERT(r, SkColorSpace::Equals(nullptr, nullptr));
     REPORTER_ASSERT(r, SkColorSpace::Equals(srgb.get(), srgb.get()));
     REPORTER_ASSERT(r, SkColorSpace::Equals(adobe.get(), adobe.get()));
     REPORTER_ASSERT(r, SkColorSpace::Equals(z30.get(), z30.get()));
     REPORTER_ASSERT(r, SkColorSpace::Equals(z32.get(), z32.get()));
     REPORTER_ASSERT(r, SkColorSpace::Equals(upperLeft.get(), upperLeft.get()));
     REPORTER_ASSERT(r, SkColorSpace::Equals(upperRight.get(), upperRight.get()));
+    REPORTER_ASSERT(r, SkColorSpace::Equals(rgb1.get(), rgb1.get()));
+    REPORTER_ASSERT(r, SkColorSpace::Equals(rgb1.get(), rgb3.get()));
 
     REPORTER_ASSERT(r, !SkColorSpace::Equals(nullptr, srgb.get()));
     REPORTER_ASSERT(r, !SkColorSpace::Equals(srgb.get(), nullptr));
     REPORTER_ASSERT(r, !SkColorSpace::Equals(adobe.get(), srgb.get()));
     REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), srgb.get()));
     REPORTER_ASSERT(r, !SkColorSpace::Equals(z32.get(), z30.get()));
     REPORTER_ASSERT(r, !SkColorSpace::Equals(upperLeft.get(), srgb.get()));
     REPORTER_ASSERT(r, !SkColorSpace::Equals(upperLeft.get(), upperRight.get()));
     REPORTER_ASSERT(r, !SkColorSpace::Equals(z30.get(), upperRight.get()));
     REPORTER_ASSERT(r, !SkColorSpace::Equals(upperRight.get(), adobe.get()));
+    REPORTER_ASSERT(r, !SkColorSpace::Equals(rgb1.get(), rgb2.get()));
 }