commit 62f216c62edbe4c997e959cfb28c8609664978df
author Ady Abraham <adyabr@google.com> Tue Oct 13 19:07:23 2020 -0700
committer Ady Abraham <adyabr@google.com> Wed Nov 18 13:30:27 2020 -0800
tree a5f22b610a460033ef656e58df3f3575ffa69d85
parent 939739b86288069814cf73b37133119983779278

SurfaceFlinger: Add DISPLAY_EVENT_FRAME_RATE_OVERRIDE

Add a new event to DisplayEventReceiver that conveys a list
of apps whose frame rates have been overriden.
This event is processed by the DisplayManager to advertise the
new frame rate to the overridden app.

Change-Id: I89fce8b5b4d9db65ec5db7dd2393c384c0fcfd82
Bug: 169271059
Bug: 169271062
Bug: 170503758
Test: manual test using SF backdoor

libs/gui/ISurfaceComposer.cpp

diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index a9fe5bf..e46a415 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -223,8 +223,8 @@
         return NO_ERROR;
     }
 
-    virtual sp<IDisplayEventConnection> createDisplayEventConnection(VsyncSource vsyncSource,
-                                                                     ConfigChanged configChanged) {
+    virtual sp<IDisplayEventConnection> createDisplayEventConnection(
+            VsyncSource vsyncSource, EventRegistrationFlags eventRegistration) {
         Parcel data, reply;
         sp<IDisplayEventConnection> result;
         int err = data.writeInterfaceToken(
@@ -233,7 +233,7 @@
             return result;
         }
         data.writeInt32(static_cast<int32_t>(vsyncSource));
-        data.writeInt32(static_cast<int32_t>(configChanged));
+        data.writeUint32(eventRegistration.get());
         err = remote()->transact(
                 BnSurfaceComposer::CREATE_DISPLAY_EVENT_CONNECTION,
                 data, &reply);
@@ -1373,10 +1373,11 @@
         case CREATE_DISPLAY_EVENT_CONNECTION: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             auto vsyncSource = static_cast<ISurfaceComposer::VsyncSource>(data.readInt32());
-            auto configChanged = static_cast<ISurfaceComposer::ConfigChanged>(data.readInt32());
+            EventRegistrationFlags eventRegistration =
+                    static_cast<EventRegistration>(data.readUint32());
 
             sp<IDisplayEventConnection> connection(
-                    createDisplayEventConnection(vsyncSource, configChanged));
+                    createDisplayEventConnection(vsyncSource, eventRegistration));
             reply->writeStrongBinder(IInterface::asBinder(connection));
             return NO_ERROR;
         }