Add SkMaskCache

tests/MaskCacheTest.cpp

Index: tests/MaskCacheTest.cpp
diff --git a/tests/MaskCacheTest.cpp b/tests/MaskCacheTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..0b83c62c00eb362f87f695b4cf3c61aec32c8ac4
--- /dev/null
+++ b/tests/MaskCacheTest.cpp
@@ -0,0 +1,105 @@
+/*
+ * 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 "SkCachedData.h"
+#include "SkMaskCache.h"
+#include "SkResourceCache.h"
+#include "Test.h"
+
+enum LockedState {
+    kUnlocked,
+    kLocked,
+};
+
+enum CachedState {
+    kNotInCache,
+    kInCache,
+};
+
+static void check_data(skiatest::Reporter* reporter, SkCachedData* data,
+                       int refcnt, CachedState cacheState, LockedState lockedState) {
+    REPORTER_ASSERT(reporter, data->testing_only_getRefCnt() == refcnt);
+    REPORTER_ASSERT(reporter, data->testing_only_isInCache() == (kInCache == cacheState));
+    bool isLocked = (data->data() != NULL);
+    REPORTER_ASSERT(reporter, isLocked == (lockedState == kLocked));
+}
+
+DEF_TEST(RRectMaskCache, reporter) {
+    SkResourceCache cache(1024);
+
+    SkScalar sigma = 0.8f;
+    SkRect rect = SkRect::MakeWH(100, 100);
+    SkRRect rrect;
+    rrect.setRectXY(rect, 30, 30);
+    SkBlurStyle style = kNormal_SkBlurStyle;
+    SkBlurQuality quality = kLow_SkBlurQuality;
+    SkMask mask;
+
+    SkCachedData* data = SkMaskCache::FindAndRef(sigma, rrect, style, quality, &mask, &cache);
+    REPORTER_ASSERT(reporter, NULL == data);
+
+    size_t size = 256;
+    data = cache.newCachedData(size);
+    memset(data->writable_data(), 0xff, size);
+    mask.fBounds.setXYWH(0, 0, 100, 100);
+    mask.fRowBytes = 100;
+    mask.fFormat = SkMask::kBW_Format;
+    SkMaskCache::Add(sigma, rrect, style, quality, mask, data, &cache);
+    check_data(reporter, data, 2, kInCache, kLocked);
+
+    data->unref();
+    check_data(reporter, data, 1, kInCache, kUnlocked);
+
+    sk_bzero(&mask, sizeof(mask));
+    data = SkMaskCache::FindAndRef(sigma, rrect, style, quality, &mask, &cache);
+    REPORTER_ASSERT(reporter, data);
+    REPORTER_ASSERT(reporter, data->size() == size);
+    REPORTER_ASSERT(reporter, mask.fBounds.top() == 0 && mask.fBounds.bottom() == 100);
+    REPORTER_ASSERT(reporter, data->data() == (const void*)mask.fImage);
+    check_data(reporter, data, 2, kInCache, kLocked);
+
+    cache.purgeAll();
+    check_data(reporter, data, 1, kNotInCache, kLocked);
+    data->unref();
+}
+
+DEF_TEST(RectsMaskCache, reporter) {
+    SkResourceCache cache(1024);
+
+    SkScalar sigma = 0.8f;
+    SkRect rect = SkRect::MakeWH(100, 100);
+    SkRect rects[2] = {rect};
+    SkBlurStyle style = kNormal_SkBlurStyle;
+    SkMask mask;
+
+    SkCachedData* data = SkMaskCache::FindAndRef(sigma, rects, 1, style, &mask, &cache);
+    REPORTER_ASSERT(reporter, NULL == data);
+
+    size_t size = 256;
+    data = cache.newCachedData(size);
+    memset(data->writable_data(), 0xff, size);
+    mask.fBounds.setXYWH(0, 0, 100, 100);
+    mask.fRowBytes = 100;
+    mask.fFormat = SkMask::kBW_Format;
+    SkMaskCache::Add(sigma, rects, 1, style, mask, data, &cache);
+    check_data(reporter, data, 2, kInCache, kLocked);
+
+    data->unref();
+    check_data(reporter, data, 1, kInCache, kUnlocked);
+
+    sk_bzero(&mask, sizeof(mask));
+    data = SkMaskCache::FindAndRef(sigma, rects, 1, style, &mask, &cache);
+    REPORTER_ASSERT(reporter, data);
+    REPORTER_ASSERT(reporter, data->size() == size);
+    REPORTER_ASSERT(reporter, mask.fBounds.top() == 0 && mask.fBounds.bottom() == 100);
+    REPORTER_ASSERT(reporter, data->data() == (const void*)mask.fImage);
+    check_data(reporter, data, 2, kInCache, kLocked);
+
+    cache.purgeAll();
+    check_data(reporter, data, 1, kNotInCache, kLocked);
+    data->unref();
+}