1 files changed, 87 insertions, 0 deletions
diff --git a/libs/hwui/PatchCache.cpp b/libs/hwui/PatchCache.cpp
new file mode 100644
index 0000000..eca5e4d
--- /dev/null
+++ b/libs/hwui/PatchCache.cpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "OpenGLRenderer"
+
+#include <utils/Log.h>
+#include <utils/ResourceTypes.h>
+
+#include "PatchCache.h"
+#include "Properties.h"
+
+namespace android {
+namespace uirenderer {
+
+///////////////////////////////////////////////////////////////////////////////
+// Constructors/destructor
+///////////////////////////////////////////////////////////////////////////////
+
+PatchCache::PatchCache(): mMaxEntries(DEFAULT_PATCH_CACHE_SIZE) {
+}
+
+PatchCache::PatchCache(uint32_t maxEntries): mMaxEntries(maxEntries) {
+}
+
+PatchCache::~PatchCache() {
+    clear();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// Caching
+///////////////////////////////////////////////////////////////////////////////
+
+void PatchCache::clear() {
+    size_t count = mCache.size();
+    for (int i = 0; i < count; i++) {
+        delete mCache.valueAt(i);
+    }
+    mCache.clear();
+}
+
+Patch* PatchCache::get(const float bitmapWidth, const float bitmapHeight,
+        const float pixelWidth, const float pixelHeight,
+        const int32_t* xDivs, const int32_t* yDivs,
+        const uint32_t width, const uint32_t height) {
+
+    const PatchDescription description(bitmapWidth, bitmapHeight,
+            pixelWidth, pixelHeight, width, height);
+
+    ssize_t index = mCache.indexOfKey(description);
+    Patch* mesh = NULL;
+    if (index >= 0) {
+        mesh = mCache.valueAt(index);
+    }
+
+    if (!mesh) {
+        PATCH_LOGD("Creating new patch mesh, w=%d h=%d", width, height);
+
+        mesh = new Patch(width, height);
+        mesh->updateVertices(bitmapWidth, bitmapHeight, 0.0f, 0.0f,
+                pixelWidth, pixelHeight, xDivs, yDivs, width, height);
+
+        if (mCache.size() >= mMaxEntries) {
+            delete mCache.valueAt(mCache.size() - 1);
+            mCache.removeItemsAt(mCache.size() - 1, 1);
+        }
+
+        mCache.add(description, mesh);
+    }
+
+    return mesh;
+}
+
+}; // namespace uirenderer
+}; // namespace android