commit 8f04b30c59ebb8bd3c7d66203d91113e078ed815
author Galia Peycheva <galinap@google.com> Tue Apr 27 13:25:38 2021 +0200
committer Galia Peycheva <galinap@google.com> Tue May 25 11:50:31 2021 +0200
tree e6805e71261974857f7be5c22cc25c065fc5964b
parent 6b38461a39eca271da55cf14682b6dfef764529b

Add SF side tunnel mode listener

This CL adds a TunnelModeStateReporter, which monitors if there are
any layers with a sideband stream in SurfaceFlinger. If any of the
layers have a sideband stream, it informs all the registered listeners
that tunnel mode is enabled. When no layers have a sideband stream, it
notifies the listeners that tunnel mode is disabled.

Bug: 171457637
Test: atest TunnelModeStateListenerTest
Test: atest TunnelModeStateReporterTest
Change-Id: Ie54b34dbd9b6253d7142e9b0f690c8469374604d

services/surfaceflinger/SurfaceFlinger.h

diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index cb8d312..c382005 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -90,6 +90,7 @@
 class Client;
 class EventThread;
 class FpsReporter;
+class TunnelModeEnabledReporter;
 class HdrLayerInfoReporter;
 class HWComposer;
 struct SetInputWindowsListener;
@@ -359,6 +360,7 @@
     friend class BufferStateLayer;
     friend class Client;
     friend class FpsReporter;
+    friend class TunnelModeEnabledReporter;
     friend class Layer;
     friend class MonitoredProducer;
     friend class RefreshRateOverlay;
@@ -673,6 +675,10 @@
     status_t removeRegionSamplingListener(const sp<IRegionSamplingListener>& listener) override;
     status_t addFpsListener(int32_t taskId, const sp<gui::IFpsListener>& listener) override;
     status_t removeFpsListener(const sp<gui::IFpsListener>& listener) override;
+    status_t addTunnelModeEnabledListener(
+            const sp<gui::ITunnelModeEnabledListener>& listener) override;
+    status_t removeTunnelModeEnabledListener(
+            const sp<gui::ITunnelModeEnabledListener>& listener) override;
     status_t setDesiredDisplayModeSpecs(const sp<IBinder>& displayToken,
                                         ui::DisplayModeId displayModeId, bool allowGroupSwitching,
                                         float primaryRefreshRateMin, float primaryRefreshRateMax,
@@ -1368,6 +1374,7 @@
     bool mLumaSampling = true;
     sp<RegionSamplingThread> mRegionSamplingThread;
     sp<FpsReporter> mFpsReporter;
+    sp<TunnelModeEnabledReporter> mTunnelModeEnabledReporter;
     ui::DisplayPrimaries mInternalDisplayPrimaries;
 
     const float mInternalDisplayDensity;