1 files changed, 14 insertions, 4 deletions
diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardware.h b/services/surfaceflinger/DisplayHardware/DisplayHardware.h
index f02c954..02be4dc 100644
--- a/services/surfaceflinger/DisplayHardware/DisplayHardware.h
+++ b/services/surfaceflinger/DisplayHardware/DisplayHardware.h
@@ -32,6 +32,7 @@
 #include "GLExtensions.h"
 
 #include "DisplayHardware/DisplayHardwareBase.h"
+#include "DisplayHardware/VSyncBarrier.h"
 
 namespace android {
 
@@ -74,6 +75,11 @@ public:
     uint32_t    getMaxTextureSize() const;
     uint32_t    getMaxViewportDims() const;
 
+    // waits for the next vsync and returns the timestamp of when it happened
+    nsecs_t     waitForRefresh() const;
+    nsecs_t     getRefreshPeriod() const;
+    nsecs_t     getRefreshTimestamp() const;
+
     uint32_t getPageFlipCount() const;
     EGLDisplay getEGLDisplay() const { return mDisplay; }
 
@@ -89,12 +95,10 @@ public:
     }
     inline Rect bounds() const { return getBounds(); }
 
-    // only for debugging
-    int getCurrentBufferIndex() const;
-
 private:
     void init(uint32_t displayIndex) __attribute__((noinline));
     void fini() __attribute__((noinline));
+    int32_t getDelayToNextVSyncUs(nsecs_t* timestamp) const;
 
     sp<SurfaceFlinger> mFlinger;
     EGLDisplay      mDisplay;
@@ -112,7 +116,13 @@ private:
     mutable uint32_t mPageFlipCount;
     GLint           mMaxViewportDims[2];
     GLint           mMaxTextureSize;
-    
+    VSyncBarrier    mVSync;
+
+    mutable Mutex   mFakeVSyncMutex;
+    mutable nsecs_t mNextFakeVSync;
+    nsecs_t         mRefreshPeriod;
+    mutable nsecs_t mLastHwVSync;
+
     HWComposer*     mHwc;
 
     sp<FramebufferNativeWindow> mNativeWindow;