[sf] Pass metadata to layer during composition
Adds the simple bits of code to grab a snapshot of the front-end Layer
generic metadata, storing a copy in LayerFECompositionState, and then
sending int to the HWC2::Layer along with other "geometry update"
settings.
As the metadata stored in the layers uses integer keys, they need to be
translated to name strings. For hard-coded mapping is defined, with a
TODO left to remove the hard-coded mapping.
A test is added to ensure that the metadata is written by OutputLayer
when present, and that it is not set as part of a "per-frame" update.
Bug: 139747351
Test: atest libcompositionengine_test
Change-Id: I63f2a34e1fb70e1aefc5aa7e97ce56b7c2579a29
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 8cabcf0..763df23 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1153,6 +1153,15 @@
std::atomic<nsecs_t> mExpectedPresentTime = 0;
+ /* ------------------------------------------------------------------------
+ * Generic Layer Metadata
+ */
+ const std::unordered_map<std::string, uint32_t>& getGenericLayerMetadataKeyMap() const;
+
+ /* ------------------------------------------------------------------------
+ * Misc
+ */
+
std::mutex mActiveConfigLock;
// This bit is set once we start setting the config. We read from this bit during the
// process. If at the end, this bit is different than mDesiredActiveConfig, we restart