1 files changed, 6 insertions, 0 deletions
diff --git a/libs/hwui/utils/Blur.h b/libs/hwui/utils/Blur.h
index 6c176e9..79aff65 100644
--- a/libs/hwui/utils/Blur.h
+++ b/libs/hwui/utils/Blur.h
@@ -18,12 +18,18 @@
 #define ANDROID_HWUI_BLUR_H
 
 #include <stdint.h>
+#include <cutils/compiler.h>
 
 namespace android {
 namespace uirenderer {
 
 class Blur {
 public:
+    // If radius > 0, return the corresponding sigma, else return 0
+    ANDROID_API static float convertRadiusToSigma(float radius);
+    // If sigma > 0.6, return the corresponding radius, else return 0
+    ANDROID_API static float convertSigmaToRadius(float sigma);
+
     static void generateGaussianWeights(float* weights, int32_t radius);
     static void horizontal(float* weights, int32_t radius, const uint8_t* source,
         uint8_t* dest, int32_t width, int32_t height);