Add SkColorSpace::Equals() API

tests/ImageIsOpaqueTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTypes.h"
+#include "Resources.h"
 #include "Test.h"
 
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #endif
 #include "SkImage.h"
 #include "SkSurface.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 
 static void test_flatten(skiatest::Reporter* reporter, const SkImageInfo& info) {
-    // just need a safe amount of storage, but ensure that it is 4-byte aligned.
-    int32_t storage[(sizeof(SkImageInfo)*2) / sizeof(int32_t)];
-    SkBinaryWriteBuffer wb(storage, sizeof(storage));
+    // Need a safe amount of 4-byte aligned storage.  Note that one of the test ICC profiles
+    // is ~7500 bytes.
+    const size_t storageBytes = 8000;
+    SkAutoTMalloc<uint32_t> storage(storageBytes / sizeof(uint32_t));
+    SkBinaryWriteBuffer wb(storage.get(), storageBytes);
     info.flatten(wb);
-    SkASSERT(wb.bytesWritten() < sizeof(storage));
+    SkASSERT(wb.bytesWritten() < storageBytes);
 
-    SkReadBuffer rb(storage, wb.bytesWritten());
+    SkReadBuffer rb(storage.get(), wb.bytesWritten());
 
     // pick a noisy byte pattern, so we ensure that unflatten sets all of our fields
     SkImageInfo info2 = SkImageInfo::Make(0xB8, 0xB8, (SkColorType) 0xB8, (SkAlphaType) 0xB8);
 
     info2.unflatten(rb);
     REPORTER_ASSERT(reporter, rb.offset() == wb.bytesWritten());
 
     REPORTER_ASSERT(reporter, info == info2);
 }
 
 DEF_TEST(ImageInfo_flattening, reporter) {
+     sk_sp<SkData> data =
+             SkData::MakeFromFileName(GetResourcePath("icc_profiles/HP_ZR30w.icc").c_str());
+    sk_sp<SkColorSpace> space0 = SkColorSpace::NewICC(data->data(), data->size());
+    data = SkData::MakeFromFileName( GetResourcePath("icc_profiles/HP_Z32x.icc").c_str());
+    sk_sp<SkColorSpace> space1 = SkColorSpace::NewICC(data->data(), data->size());
+    data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperLeft.icc").c_str());
+    sk_sp<SkColorSpace> space2 = SkColorSpace::NewICC(data->data(), data->size());
+    data = SkData::MakeFromFileName(GetResourcePath("icc_profiles/upperRight.icc").c_str());
+    sk_sp<SkColorSpace> space3 = SkColorSpace::NewICC(data->data(), data->size());
+
     sk_sp<SkColorSpace> spaces[] = {
         nullptr,
         SkColorSpace::NewNamed(SkColorSpace::kSRGB_Named),
         SkColorSpace::NewNamed(SkColorSpace::kAdobeRGB_Named),
+        space0,
+        space1,
+        space2,
+        space3,
     };
 
     for (int ct = 0; ct <= kLastEnum_SkColorType; ++ct) {
         for (int at = 0; at <= kLastEnum_SkAlphaType; ++at) {
             for (auto& cs : spaces) {
                 SkImageInfo info = SkImageInfo::Make(100, 200,
                                                      static_cast<SkColorType>(ct),
                                                      static_cast<SkAlphaType>(at),
                                                      cs);
                 test_flatten(reporter, info);
@@ skipping 26 matching lines @@
     auto surfaceTransparent(SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, infoTransparent));
     check_isopaque(reporter, surfaceTransparent, false);
 
     SkImageInfo infoOpaque = SkImageInfo::MakeN32(5, 5, kOpaque_SkAlphaType);
     auto surfaceOpaque(SkSurface::MakeRenderTarget(context,SkBudgeted::kNo, infoOpaque));
 
     check_isopaque(reporter, surfaceOpaque, true);
 }
 
 #endif