Cache frame event history producer-side.
* Producer maintains a recent history of frames.
* Producer only does a binder call if requested
informatiVon doesn't exist in the cache.
* Consumer sends fences to the producer, which
can be queried for timestamps without a
binder call.
Test: adb shell /data/nativetest/libgui_test/libgui_test
--gtest_filter=*GetFrameTimestamps*
Change-Id: I8a64579407cc2935f5c659462cb227b07ba27e43
diff --git a/include/gui/IGraphicBufferProducer.h b/include/gui/IGraphicBufferProducer.h
index 493143a..612a902 100644
--- a/include/gui/IGraphicBufferProducer.h
+++ b/include/gui/IGraphicBufferProducer.h
@@ -588,13 +588,8 @@
virtual status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
sp<Fence>* outFence, float outTransformMatrix[16]) = 0;
- // Attempts to retrieve timestamp information for the given frame number.
- // If information for the given frame number is not found, returns false.
- // Returns true otherwise.
- //
- // If a fence has not yet signaled the timestamp returned will be 0;
- virtual bool getFrameTimestamps(uint64_t /*frameNumber*/,
- FrameTimestamps* /*outTimestamps*/) { return false; }
+ // Gets the frame events that haven't already been retrieved.
+ virtual void getFrameTimestamps(FrameEventHistoryDelta* /*outDelta*/) {}
// Returns a unique id for this BufferQueue
virtual status_t getUniqueId(uint64_t* outId) const = 0;