Optimizing display lists by referencing pointers to resources instead of copying them
Change-Id: I81ad3551d74aa1e5bb64d69e33d2eb29a6c1eb6a
diff --git a/libs/hwui/ResourceCache.h b/libs/hwui/ResourceCache.h
new file mode 100644
index 0000000..cda2718
--- /dev/null
+++ b/libs/hwui/ResourceCache.h
@@ -0,0 +1,81 @@
+/*
+ * 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.
+ */
+
+#ifndef ANDROID_UI_RESOURCE_CACHE_H
+#define ANDROID_UI_RESOURCE_CACHE_H
+
+#include <SkBitmap.h>
+#include <SkMatrix.h>
+#include <SkPaint.h>
+#include <SkiaShader.h>
+#include <utils/KeyedVector.h>
+
+namespace android {
+namespace uirenderer {
+
+/**
+ * Type of Resource being cached
+ */
+enum ResourceType {
+ kBitmap,
+ kMatrix,
+ kPaint,
+ kShader,
+};
+
+class ResourceReference {
+public:
+
+ ResourceReference() { refCount = 0; recycled = false; destroyed = false;}
+ ResourceReference(ResourceType type) {
+ refCount = 0; recycled = false; destroyed = false; resourceType = type;
+ }
+
+ int refCount;
+ bool recycled;
+ bool destroyed;
+ ResourceType resourceType;
+};
+
+class ResourceCache {
+ KeyedVector<void *, ResourceReference *>* mCache;
+public:
+ ResourceCache();
+ ~ResourceCache();
+ void incrementRefcount(SkBitmap* resource);
+ void incrementRefcount(SkMatrix* resource);
+ void incrementRefcount(SkPaint* resource);
+ void incrementRefcount(SkiaShader* resource);
+ void incrementRefcount(const void* resource, ResourceType resourceType);
+ void decrementRefcount(void* resource);
+ void decrementRefcount(SkBitmap* resource);
+ void decrementRefcount(SkiaShader* resource);
+ void recycle(void* resource);
+ void recycle(SkBitmap* resource);
+ void destructor(SkBitmap* resource);
+ void destructor(SkMatrix* resource);
+ void destructor(SkPaint* resource);
+ void destructor(SkiaShader* resource);
+private:
+ void deleteResourceReference(void* resource, ResourceReference* ref);
+ void incrementRefcount(void* resource, ResourceType resourceType);
+ void logCache();
+};
+
+}; // namespace uirenderer
+}; // namespace android
+
+#endif // ANDROID_UI_RESOURCE_CACHE_H