commit 62c48c931f88ec44c41621afe988c34cab1fb41d
author Ian Elliott <ianelliott@google.com> Fri Jan 20 13:13:20 2017 -0700
committer Ian Elliott <ianelliott@google.com> Tue Jan 24 08:30:37 2017 -0700
tree dcd223b86d986045f3b3d1c2d2769b7b29572aaa
parent 146abf38c2442b77dc78a0565ad010376c9d1b69

Plumb refresh cycle duration up to VK_GOOGLE_display_timing.

Test: Manually tested with a modified cube demo, that reports the refresh
duration returned from this extension.

Change-Id: Ib9499429119e910585a4ee9341c3a2d86a3bdae0

libs/gui/Surface.cpp

diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index c859828..851a495 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -28,6 +28,7 @@
 
 #include <ui/Fence.h>
 #include <ui/Region.h>
+#include <ui/DisplayStatInfo.h>
 
 #include <gui/IProducerListener.h>
 #include <gui/ISurfaceComposer.h>
@@ -261,6 +262,18 @@
 
     return NO_ERROR;
 }
+status_t Surface::getDisplayRefreshCyclePeriod(nsecs_t* outMinRefreshDuration,
+            nsecs_t* outMaxRefreshDuration) {
+    ATRACE_CALL();
+
+    DisplayStatInfo stats;
+    status_t err = composerService()->getDisplayStats(NULL, &stats);
+
+    *outMinRefreshDuration = stats.vsyncPeriod;
+    *outMaxRefreshDuration = stats.vsyncPeriod;
+
+    return NO_ERROR;
+}
 
 int Surface::hook_setSwapInterval(ANativeWindow* window, int interval) {
     Surface* c = getSelf(window);
@@ -828,6 +841,9 @@
     case NATIVE_WINDOW_GET_FRAME_TIMESTAMPS:
         res = dispatchGetFrameTimestamps(args);
         break;
+    case NATIVE_WINDOW_GET_REFRESH_CYCLE_PERIOD:
+        res = dispatchGetDisplayRefreshCyclePeriod(args);
+        break;
     default:
         res = NAME_NOT_FOUND;
         break;
@@ -973,6 +989,13 @@
             outDisplayRetireTime, outDequeueReadyTime, outReleaseTime);
 }
 
+int Surface::dispatchGetDisplayRefreshCyclePeriod(va_list args) {
+    nsecs_t* outMinRefreshDuration = va_arg(args, int64_t*);
+    nsecs_t* outMaxRefreshDuration = va_arg(args, int64_t*);
+    return getDisplayRefreshCyclePeriod(outMinRefreshDuration,
+            outMaxRefreshDuration);
+}
+
 int Surface::connect(int api) {
     static sp<IProducerListener> listener = new DummyProducerListener();
     return connect(api, listener);