Send syncStatus and return FrameCommitCallback in FrameCallback

FrameCallback sends back the syncStatus and allows the caller to return
a FrameCommitCallback. This is so the caller can evaluate the results of
the sync and determine if it wants to continue waiting for a commit
callback. In cases, where the sync has failed, there will never be a
commit callback so the caller can avoid waiting.

This is partically helpful for VRI because it wants to sync with a frame
that will draw, but also doesn't want to get stuck indefinitely waiting
on the callback. VRI can check the syncStatus and only handle blast sync
and/or reportDraw when its determined that a draw will happen.

This allows VRI to remove frameCompleteCallback since it can now wait
until a buffer has drawn instead of when the vsync has completed. This makes
sure it waits on FrameDropped since that result indicates HWUI will draw on
the next vsync

Test: BlastSync
Bug: 200284684
Change-Id: Ic6e2f08ea21ac8a1634a3389c927fcb68ede3f7b

libs/hwui/renderthread/DrawFrameTask.cpp

@@ -158,7 +158,8 @@ void DrawFrameTask::run() {
 
     // Grab a copy of everything we need
     CanvasContext* context = mContext;
-    std::function<void(int64_t)> frameCallback = std::move(mFrameCallback);
+    std::function<std::function<void(bool)>(int32_t, int64_t)> frameCallback =
+            std::move(mFrameCallback);
     std::function<void()> frameCompleteCallback = std::move(mFrameCompleteCallback);
     mFrameCallback = nullptr;
     mFrameCompleteCallback = nullptr;
@@ -173,8 +174,13 @@ void DrawFrameTask::run() {
 
     // Even if we aren't drawing this vsync pulse the next frame number will still be accurate
     if (CC_UNLIKELY(frameCallback)) {
-        context->enqueueFrameWork(
-                [frameCallback, frameNr = context->getFrameNumber()]() { frameCallback(frameNr); });
+        context->enqueueFrameWork([frameCallback, context, syncResult = mSyncResult,
+                                   frameNr = context->getFrameNumber()]() {
+            auto frameCommitCallback = std::move(frameCallback(syncResult, frameNr));
+            if (frameCommitCallback) {
+                context->addFrameCommitListener(std::move(frameCommitCallback));
+            }
+        });
     }
 
     nsecs_t dequeueBufferDuration = 0;