Support SurfaceView synchronization.
Add API for fetching the next frame number to be produced by
a given buffer producer. Add an API to SurfaceComposer to
defer execution of the current transaction until a given frame number.
Together these may be used to synchronize app drawing and surface
control updates.
Change-Id: I8e0f4993332ac0199c768c88581a453fefbaff1d
diff --git a/libs/gui/SurfaceControl.cpp b/libs/gui/SurfaceControl.cpp
index 1983027..a945358 100644
--- a/libs/gui/SurfaceControl.cpp
+++ b/libs/gui/SurfaceControl.cpp
@@ -145,6 +145,13 @@
return mClient->setCrop(mHandle, crop);
}
+status_t SurfaceControl::deferTransactionUntil(sp<IBinder> handle,
+ uint64_t frameNumber) {
+ status_t err = validate();
+ if (err < 0) return err;
+ return mClient->deferTransactionUntil(mHandle, handle, frameNumber);
+}
+
status_t SurfaceControl::clearLayerFrameStats() const {
status_t err = validate();
if (err < 0) return err;
@@ -190,5 +197,11 @@
return mSurfaceData;
}
+sp<IBinder> SurfaceControl::getHandle() const
+{
+ Mutex::Autolock lock(mLock);
+ return mHandle;
+}
+
// ----------------------------------------------------------------------------
}; // namespace android