[AChoreographer] Add refresh rate callback.

This will augment the NDK to respond to display events where the display
refresh rate changes. Consumers of this api will include:
* HWUI, for implementing a policy for determining whether to use
render-ahead,
* Swappy, to potentially replace jumping into Java from native code to
respond to display evnets there.
* Any other native app that would rely on the up-to-date display refresh
rate.

Currently however this is not yet exposed to NDK as CTS is not yet
written. Once CTS is written then this will be formally exposed to NDK.
For now we'll leave these as APEX apis to represent incremental
progress.

Bug: 136262896
Test: builds
Change-Id: I66d393f93eb5d681547411e330ef1b8950a35c5d

1 files changed, 13 insertions, 10 deletions

diff --git a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
index 80bca021ab..61d4f47c21 100644
--- a/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
+++ b/services/surfaceflinger/tests/unittests/EventThreadTest.cpp
@@ -85,7 +85,8 @@ protected:
     void expectHotplugEventReceivedByConnection(PhysicalDisplayId expectedDisplayId,
                                                 bool expectedConnected);
     void expectConfigChangedEventReceivedByConnection(PhysicalDisplayId expectedDisplayId,
-                                                      int32_t expectedConfigId);
+                                                      int32_t expectedConfigId,
+                                                      nsecs_t expectedVsyncPeriod);
 
     AsyncCallRecorder<void (*)(bool)> mVSyncSetEnabledCallRecorder;
     AsyncCallRecorder<void (*)(VSyncSource::Callback*)> mVSyncSetCallbackCallRecorder;
@@ -209,13 +210,15 @@ void EventThreadTest::expectHotplugEventReceivedByConnection(PhysicalDisplayId e
 }
 
 void EventThreadTest::expectConfigChangedEventReceivedByConnection(
-        PhysicalDisplayId expectedDisplayId, int32_t expectedConfigId) {
+        PhysicalDisplayId expectedDisplayId, int32_t expectedConfigId,
+        nsecs_t expectedVsyncPeriod) {
     auto args = mConnectionEventCallRecorder.waitForCall();
     ASSERT_TRUE(args.has_value());
     const auto& event = std::get<0>(args.value());
     EXPECT_EQ(DisplayEventReceiver::DISPLAY_EVENT_CONFIG_CHANGED, event.header.type);
     EXPECT_EQ(expectedDisplayId, event.header.displayId);
     EXPECT_EQ(expectedConfigId, event.config.configId);
+    EXPECT_EQ(expectedVsyncPeriod, event.config.vsyncPeriod);
 }
 
 namespace {
@@ -450,18 +453,18 @@ TEST_F(EventThreadTest, postHotplugExternalConnect) {
 }
 
 TEST_F(EventThreadTest, postConfigChangedPrimary) {
-    mThread->onConfigChanged(INTERNAL_DISPLAY_ID, HwcConfigIndexType(7));
-    expectConfigChangedEventReceivedByConnection(INTERNAL_DISPLAY_ID, 7);
+    mThread->onConfigChanged(INTERNAL_DISPLAY_ID, HwcConfigIndexType(7), 16666666);
+    expectConfigChangedEventReceivedByConnection(INTERNAL_DISPLAY_ID, 7, 16666666);
 }
 
 TEST_F(EventThreadTest, postConfigChangedExternal) {
-    mThread->onConfigChanged(EXTERNAL_DISPLAY_ID, HwcConfigIndexType(5));
-    expectConfigChangedEventReceivedByConnection(EXTERNAL_DISPLAY_ID, 5);
+    mThread->onConfigChanged(EXTERNAL_DISPLAY_ID, HwcConfigIndexType(5), 16666666);
+    expectConfigChangedEventReceivedByConnection(EXTERNAL_DISPLAY_ID, 5, 16666666);
 }
 
 TEST_F(EventThreadTest, postConfigChangedPrimary64bit) {
-    mThread->onConfigChanged(DISPLAY_ID_64BIT, HwcConfigIndexType(7));
-    expectConfigChangedEventReceivedByConnection(DISPLAY_ID_64BIT, 7);
+    mThread->onConfigChanged(DISPLAY_ID_64BIT, HwcConfigIndexType(7), 16666666);
+    expectConfigChangedEventReceivedByConnection(DISPLAY_ID_64BIT, 7, 16666666);
 }
 
 TEST_F(EventThreadTest, suppressConfigChanged) {
@@ -470,8 +473,8 @@ TEST_F(EventThreadTest, suppressConfigChanged) {
             createConnection(suppressConnectionEventRecorder,
                              ISurfaceComposer::eConfigChangedSuppress);
 
-    mThread->onConfigChanged(INTERNAL_DISPLAY_ID, HwcConfigIndexType(9));
-    expectConfigChangedEventReceivedByConnection(INTERNAL_DISPLAY_ID, 9);
+    mThread->onConfigChanged(INTERNAL_DISPLAY_ID, HwcConfigIndexType(9), 16666666);
+    expectConfigChangedEventReceivedByConnection(INTERNAL_DISPLAY_ID, 9, 16666666);
 
     auto args = suppressConnectionEventRecorder.waitForCall();
     ASSERT_FALSE(args.has_value());