[HWUI] use AChoreographer in place of DisplayEventReceiver.

Bug: 136262896
Test: builds, boots
Test: scroll through settings app
Test: Toggle between 60/90hz and observe systrace
Change-Id: I8eef306a968525c55f3863ae688545faa43b23be

1 files changed, 14 insertions, 3 deletions

diff --git a/libs/hwui/renderthread/RenderThread.h b/libs/hwui/renderthread/RenderThread.h
index da79e97a6ceb..8be46a6d16e1 100644
--- a/libs/hwui/renderthread/RenderThread.h
+++ b/libs/hwui/renderthread/RenderThread.h
@@ -19,6 +19,7 @@
 
 #include <GrContext.h>
 #include <SkBitmap.h>
+#include <apex/choreographer.h>
 #include <cutils/compiler.h>
 #include <thread/ThreadBase.h>
 #include <utils/Looper.h>
@@ -73,10 +74,11 @@ protected:
 
 struct VsyncSource {
     virtual void requestNextVsync() = 0;
-    virtual nsecs_t latestVsyncEvent() = 0;
+    virtual void drainPendingEvents() = 0;
     virtual ~VsyncSource() {}
 };
 
+class ChoreographerSource;
 class DummyVsyncSource;
 
 typedef void (*JVMAttachHook)(const char* name);
@@ -136,6 +138,7 @@ private:
     friend class DispatchFrameCallbacks;
     friend class RenderProxy;
     friend class DummyVsyncSource;
+    friend class ChoreographerSource;
     friend class android::uirenderer::AutoBackendTextureRelease;
     friend class android::uirenderer::TestUtils;
     friend class android::uirenderer::WebViewFunctor;
@@ -149,13 +152,21 @@ private:
     static RenderThread& getInstance();
 
     void initThreadLocals();
-    void initializeDisplayEventReceiver();
+    void initializeChoreographer();
     void setupFrameInterval();
-    static int displayEventReceiverCallback(int fd, int events, void* data);
+    // Callbacks for choreographer events:
+    // choreographerCallback will call AChoreograper_handleEvent to call the
+    // corresponding callbacks for each display event type
+    static int choreographerCallback(int fd, int events, void* data);
+    // Callback that will be run on vsync ticks.
+    static void frameCallback(int64_t frameTimeNanos, void* data);
+    // Callback that will be run whenver there is a refresh rate change.
+    static void refreshRateCallback(int64_t vsyncPeriod, void* data);
     void drainDisplayEventQueue();
     void dispatchFrameCallbacks();
     void requestVsync();
 
+    AChoreographer* mChoreographer;
     VsyncSource* mVsyncSource;
     bool mVsyncRequested;
     std::set<IFrameCallback*> mFrameCallbacks;