SurfaceFlinger: Native changes to add blur effect

Native changes to add blur-behind and blur mask effect

Change-Id: I54faf82d750e8299de6d261f6a893ab26d08df84

SurfaceFlinger: Adding template for LayerBlur files

Change-Id: I444009113b7bdd6c5284863fd1f56358e67d9fe6

SurfaceFlinger: Featurize libuiblur module for OSS build

Change-Id: Ifdc176e699434125d17b111c044b8ba954cf717c

4 files changed, 21 insertions, 2 deletions

diff --git a/include/gui/ISurfaceComposerClient.h b/include/gui/ISurfaceComposerClient.h
index bb79bd0..d3e8b8b 100644
--- a/include/gui/ISurfaceComposerClient.h
+++ b/include/gui/ISurfaceComposerClient.h
@@ -50,6 +50,7 @@ public:
         eCursorWindow       = 0x00002000,
 
         eFXSurfaceNormal    = 0x00000000,
+        eFXSurfaceBlur      = 0x00010000,
         eFXSurfaceDim       = 0x00020000,
         eFXSurfaceMask      = 0x000F0000,
     };
diff --git a/include/gui/SurfaceComposerClient.h b/include/gui/SurfaceComposerClient.h
index 37d953e..9ec3f23 100644
--- a/include/gui/SurfaceComposerClient.h
+++ b/include/gui/SurfaceComposerClient.h
@@ -163,6 +163,11 @@ public:
             const Rect& layerStackRect,
             const Rect& displayRect);
 
+    status_t    setBlur(const sp<IBinder>& id, float blur);
+    status_t    setBlurMaskSurface(const sp<IBinder>& id, const sp<IBinder>& maskSurfaceId);
+    status_t    setBlurMaskSampling(const sp<IBinder>& id, uint32_t blurMaskSampling);
+    status_t    setBlurMaskAlphaThreshold(const sp<IBinder>& id, float alpha);
+
 private:
     virtual void onFirstRef();
     Composer& getComposer();
diff --git a/include/gui/SurfaceControl.h b/include/gui/SurfaceControl.h
index 9f62f7c..5fa45d1 100644
--- a/include/gui/SurfaceControl.h
+++ b/include/gui/SurfaceControl.h
@@ -77,6 +77,11 @@ public:
     status_t clearLayerFrameStats() const;
     status_t getLayerFrameStats(FrameStats* outStats) const;
 
+    status_t    setBlur(float blur = 0);
+    status_t    setBlurMaskSurface(const sp<SurfaceControl>& maskSurface);
+    status_t    setBlurMaskSampling(uint32_t blurMaskSampling);
+    status_t    setBlurMaskAlphaThreshold(float alpha);
+
 private:
     // can't be copied
     SurfaceControl& operator = (SurfaceControl& rhs);
diff --git a/include/private/gui/LayerState.h b/include/private/gui/LayerState.h
index cbe8733..9ff8409 100644
--- a/include/private/gui/LayerState.h
+++ b/include/private/gui/LayerState.h
@@ -52,12 +52,16 @@ struct layer_state_t {
         eFlagsChanged               = 0x00000040,
         eLayerStackChanged          = 0x00000080,
         eCropChanged                = 0x00000100,
+        eBlurChanged                = 0x00400000,
+        eBlurMaskSurfaceChanged     = 0x00800000,
+        eBlurMaskSamplingChanged    = 0x01000000,
+        eBlurMaskAlphaThresholdChanged = 0x02000000,
     };
 
     layer_state_t()
         :   what(0),
-            x(0), y(0), z(0), w(0), h(0), layerStack(0),
-            alpha(0), flags(0), mask(0),
+            x(0), y(0), z(0), w(0), h(0), layerStack(0), blur(0),
+            blurMaskSampling(0), blurMaskAlphaThreshold(0), alpha(0), flags(0), mask(0),
             reserved(0)
     {
         matrix.dsdx = matrix.dtdy = 1.0f;
@@ -82,6 +86,10 @@ struct layer_state_t {
             uint32_t        w;
             uint32_t        h;
             uint32_t        layerStack;
+            float           blur;
+            sp<IBinder>     blurMaskSurface;
+            uint32_t        blurMaskSampling;
+            float           blurMaskAlphaThreshold;
             float           alpha;
             uint8_t         flags;
             uint8_t         mask;