[poc] curve-filter

third_party/WebKit/Source/platform/graphics/FrameData.h

Index: third_party/WebKit/Source/platform/graphics/FrameData.h
diff --git a/third_party/WebKit/Source/platform/graphics/FrameData.h b/third_party/WebKit/Source/platform/graphics/FrameData.h
index e64c9318bd54efa3417f2bfbbe91dfd52d9bc8f2..04324fe8845328051bb044f8f13f8cde5ae77aab 100644
--- a/third_party/WebKit/Source/platform/graphics/FrameData.h
+++ b/third_party/WebKit/Source/platform/graphics/FrameData.h
@@ -28,12 +28,44 @@
 #ifndef FrameData_h
 #define FrameData_h
 
+#include "platform/graphics/ColorSpaceFilter.h"
 #include "platform/graphics/ImageOrientation.h"
+#include "third_party/skia/include/core/SkColorFilter.h"
 #include "third_party/skia/include/core/SkImage.h"
+#include "third_party/skia/include/core/SkPicture.h"
 #include "wtf/Allocator.h"
+#include "wtf/HashMap.h"
+#include "wtf/MainThread.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/RefPtr.h"
 #include "wtf/VectorTraits.h"
+#include "wtf/text/StringHash.h"
+#include "wtf/text/WTFString.h"
+
+class ColorTransformImageCache {
+    WTF_MAKE_NONCOPYABLE(ColorTransformImageCache);
+public:
+    ColorTransformImageCache() { }
+
+    void set(const String& key, SkImage* image)
+    {
+        m_colorImages.set(key, image);
+    }
+
+    PassRefPtr<SkImage> find(const String& key) const
+    {
+        HashMap<String, RefPtr<SkImage>>::const_iterator it = m_colorImages.find(key);
+        return it != m_colorImages.end() ? it->value : nullptr;
+    }
+
+    void clear()
+    {
+        m_colorImages.clear();
+    }
+
+private:
+    HashMap<String, RefPtr<SkImage>> m_colorImages;
+};
 
 namespace blink {
 
@@ -44,11 +76,28 @@ public:
     FrameData();
     ~FrameData();
 
+    PassRefPtr<SkImage> find(SkColorFilter* transform)
+    {
+        return cache().find(colorSpaceFilterKey(transform));
+    }
+
+    void cache(SkColorFilter* transform, SkImage* image)
+    {
+        cache().set(colorSpaceFilterKey(transform), image);
+    }
+
+    ColorTransformImageCache& cache()
+    {
+        RELEASE_ASSERT(isMainThread());
+        return m_cache;
+    }
+
     // Clear the cached image data on the frame, and (optionally) the metadata.
     // Returns whether there was cached image data to clear.
     bool clear(bool clearMetadata);
 
     RefPtr<SkImage> m_frame;
+    ColorTransformImageCache m_cache;
     ImageOrientation m_orientation;
     float m_duration;
     bool m_haveMetadata : 1;