commit 447052e2f69efb01023dcc0dce230dd649f0475f
author Ady Abraham <adyabr@google.com> Wed Feb 13 16:07:27 2019 -0800
committer Ady Abraham <adyabr@google.com> Mon Feb 25 13:18:50 2019 -0800
tree 3d442d73640de9852517da0225ce49e2f035bbe0
parent 838de0622c700345fbfde270c065fdc97f4b9428

SurfaceFlinger: add DISPLAY_EVENT_CONFIG_CHANGED

Add a new event to DisplayEventReceiver for display
configuration change. This event is sent by SF when display config
is changed.

Test: adb shell /data/nativetest64/libsurfaceflinger_unittest/libsurfaceflinger_unittest
Bug: 122905403
Change-Id: Ibb7e0ce7b83b91259ccb0e9c982f5e378b0ebfaf

services/surfaceflinger/Scheduler/EventThread.cpp

diff --git a/services/surfaceflinger/Scheduler/EventThread.cpp b/services/surfaceflinger/Scheduler/EventThread.cpp
index 4b500f1..78bf7c5 100644
--- a/services/surfaceflinger/Scheduler/EventThread.cpp
+++ b/services/surfaceflinger/Scheduler/EventThread.cpp
@@ -97,6 +97,13 @@
     return event;
 }
 
+DisplayEventReceiver::Event makeConfigChanged(uint32_t displayId, int32_t configId) {
+    DisplayEventReceiver::Event event;
+    event.header = {DisplayEventReceiver::DISPLAY_EVENT_CONFIG_CHANGED, displayId, systemTime()};
+    event.config.configId = configId;
+    return event;
+}
+
 } // namespace
 
 EventThreadConnection::EventThreadConnection(EventThread* eventThread,
@@ -307,6 +314,13 @@
     mCondition.notify_all();
 }
 
+void EventThread::onConfigChanged(PhysicalDisplayId displayId, int32_t configId) {
+    std::lock_guard<std::mutex> lock(mMutex);
+
+    mPendingEvents.push_back(makeConfigChanged(displayId, configId));
+    mCondition.notify_all();
+}
+
 void EventThread::threadMain(std::unique_lock<std::mutex>& lock) {
     DisplayEventConsumers consumers;
 
@@ -404,6 +418,7 @@
                                      const sp<EventThreadConnection>& connection) const {
     switch (event.header.type) {
         case DisplayEventReceiver::DISPLAY_EVENT_HOTPLUG:
+        case DisplayEventReceiver::DISPLAY_EVENT_CONFIG_CHANGED:
             return true;
 
         case DisplayEventReceiver::DISPLAY_EVENT_VSYNC: