Add TimeInterpolator support to RNA

 Bug: 14678626

Change-Id: I6554e7fcd42c49fac3618ca792083bb68e358f55
diff --git a/libs/hwui/Interpolator.h b/libs/hwui/Interpolator.h
index 2cfb60c..44fb37c 100644
--- a/libs/hwui/Interpolator.h
+++ b/libs/hwui/Interpolator.h
@@ -16,6 +16,10 @@
 #ifndef INTERPOLATOR_H
 #define INTERPOLATOR_H
 
+#include <stddef.h>
+
+#include <cutils/compiler.h>
+
 namespace android {
 namespace uirenderer {
 
@@ -31,7 +35,7 @@
     Interpolator() {}
 };
 
-class AccelerateDecelerateInterpolator : public Interpolator {
+class ANDROID_API AccelerateDecelerateInterpolator : public Interpolator {
 public:
     AccelerateDecelerateInterpolator() {}
     virtual ~AccelerateDecelerateInterpolator() {}
@@ -39,6 +43,18 @@
     virtual float interpolate(float input);
 };
 
+class ANDROID_API LUTInterpolator : public Interpolator {
+public:
+    LUTInterpolator(float* values, size_t size);
+    ~LUTInterpolator();
+
+    virtual float interpolate(float input);
+
+private:
+    float* mValues;
+    size_t mSize;
+};
+
 } /* namespace uirenderer */
 } /* namespace android */