Merge "[SurfaceFlinger] Don't persist buffers to HWC when powered off."
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index aa638b7..1953005 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -551,6 +551,10 @@
     ATRACE_CALL();
     ALOGV(__FUNCTION__);
 
+    if (!getState().isEnabled) {
+        return;
+    }
+
     for (auto* layer : getOutputLayersOrderedByZ()) {
         layer->updateCompositionState(refreshArgs.updatingGeometryThisFrame,
                                       refreshArgs.devOptForceClientComposition);
diff --git a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
index 95ae888..7fce520 100644
--- a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
@@ -483,6 +483,31 @@
 }
 
 /*
+ * Output::updateAndWriteCompositionState()
+ */
+
+TEST_F(OutputTest, updateAndWriteCompositionState_takesEarlyOutIfNotEnabled) {
+    mOutput->editState().isEnabled = false;
+
+    CompositionRefreshArgs args;
+    mOutput->updateAndWriteCompositionState(args);
+}
+
+TEST_F(OutputTest, updateAndWriteCompositionState_updatesLayers) {
+    mOutput->editState().isEnabled = true;
+    mock::OutputLayer* outputLayer = new StrictMock<mock::OutputLayer>();
+    mOutput->injectOutputLayerForTest(std::unique_ptr<OutputLayer>(outputLayer));
+
+    EXPECT_CALL(*outputLayer, updateCompositionState(true, true)).Times(1);
+    EXPECT_CALL(*outputLayer, writeStateToHWC(true)).Times(1);
+
+    CompositionRefreshArgs args;
+    args.updatingGeometryThisFrame = true;
+    args.devOptForceClientComposition = true;
+    mOutput->updateAndWriteCompositionState(args);
+}
+
+/*
  * Output::prepareFrame()
  */
 
diff --git a/services/surfaceflinger/tests/unittests/CompositionTest.cpp b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
index 143a7a0..6d38373 100644
--- a/services/surfaceflinger/tests/unittests/CompositionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/CompositionTest.cpp
@@ -168,6 +168,7 @@
 
     std::unordered_set<HWC2::Capability> mDefaultCapabilities = {HWC2::Capability::SidebandStream};
 
+    bool mDisplayOff = false;
     TestableSurfaceFlinger mFlinger;
     sp<DisplayDevice> mDisplay;
     sp<DisplayDevice> mExternalDisplay;
@@ -534,69 +535,85 @@
     }
 
     static void setupHwcSetGeometryCallExpectations(CompositionTest* test) {
-        // TODO: Coverage of other values
-        EXPECT_CALL(*test->mComposer,
-                    setLayerBlendMode(HWC_DISPLAY, HWC_LAYER, LayerProperties::BLENDMODE))
-                .Times(1);
-        // TODO: Coverage of other values for origin
-        EXPECT_CALL(*test->mComposer,
-                    setLayerDisplayFrame(HWC_DISPLAY, HWC_LAYER,
-                                         IComposerClient::Rect({0, 0, LayerProperties::WIDTH,
-                                                                LayerProperties::HEIGHT})))
-                .Times(1);
-        EXPECT_CALL(*test->mComposer,
-                    setLayerPlaneAlpha(HWC_DISPLAY, HWC_LAYER, LayerProperties::COLOR[3]))
-                .Times(1);
-        // TODO: Coverage of other values
-        EXPECT_CALL(*test->mComposer, setLayerZOrder(HWC_DISPLAY, HWC_LAYER, 0u)).Times(1);
-        // TODO: Coverage of other values
-        EXPECT_CALL(*test->mComposer, setLayerInfo(HWC_DISPLAY, HWC_LAYER, 0u, 0u)).Times(1);
+        if (!test->mDisplayOff) {
+            // TODO: Coverage of other values
+            EXPECT_CALL(*test->mComposer,
+                        setLayerBlendMode(HWC_DISPLAY, HWC_LAYER, LayerProperties::BLENDMODE))
+                    .Times(1);
+            // TODO: Coverage of other values for origin
+            EXPECT_CALL(*test->mComposer,
+                        setLayerDisplayFrame(HWC_DISPLAY, HWC_LAYER,
+                                             IComposerClient::Rect({0, 0, LayerProperties::WIDTH,
+                                                                    LayerProperties::HEIGHT})))
+                    .Times(1);
+            EXPECT_CALL(*test->mComposer,
+                        setLayerPlaneAlpha(HWC_DISPLAY, HWC_LAYER, LayerProperties::COLOR[3]))
+                    .Times(1);
+            // TODO: Coverage of other values
+            EXPECT_CALL(*test->mComposer, setLayerZOrder(HWC_DISPLAY, HWC_LAYER, 0u)).Times(1);
+            // TODO: Coverage of other values
+            EXPECT_CALL(*test->mComposer, setLayerInfo(HWC_DISPLAY, HWC_LAYER, 0u, 0u)).Times(1);
 
-        // These expectations retire on saturation as the code path these
-        // expectations are for appears to make an extra call to them.
-        // TODO: Investigate this extra call
-        EXPECT_CALL(*test->mComposer, setLayerTransform(HWC_DISPLAY, HWC_LAYER, DEFAULT_TRANSFORM))
-                .Times(AtLeast(1))
-                .RetiresOnSaturation();
+            // These expectations retire on saturation as the code path these
+            // expectations are for appears to make an extra call to them.
+            // TODO: Investigate this extra call
+            EXPECT_CALL(*test->mComposer,
+                        setLayerTransform(HWC_DISPLAY, HWC_LAYER, DEFAULT_TRANSFORM))
+                    .Times(AtLeast(1))
+                    .RetiresOnSaturation();
+        }
     }
 
     static void setupHwcSetSourceCropBufferCallExpectations(CompositionTest* test) {
-        EXPECT_CALL(*test->mComposer,
-                    setLayerSourceCrop(HWC_DISPLAY, HWC_LAYER,
-                                       IComposerClient::FRect({0.f, 0.f, LayerProperties::WIDTH,
-                                                               LayerProperties::HEIGHT})))
-                .Times(1);
+        if (!test->mDisplayOff) {
+            EXPECT_CALL(*test->mComposer,
+                        setLayerSourceCrop(HWC_DISPLAY, HWC_LAYER,
+                                           IComposerClient::FRect({0.f, 0.f, LayerProperties::WIDTH,
+                                                                   LayerProperties::HEIGHT})))
+                    .Times(1);
+        }
     }
 
     static void setupHwcSetSourceCropColorCallExpectations(CompositionTest* test) {
-        EXPECT_CALL(*test->mComposer,
-                    setLayerSourceCrop(HWC_DISPLAY, HWC_LAYER,
-                                       IComposerClient::FRect({0.f, 0.f, 0.f, 0.f})))
-                .Times(1);
+        if (!test->mDisplayOff) {
+            EXPECT_CALL(*test->mComposer,
+                        setLayerSourceCrop(HWC_DISPLAY, HWC_LAYER,
+                                           IComposerClient::FRect({0.f, 0.f, 0.f, 0.f})))
+                    .Times(1);
+        }
     }
 
     static void setupHwcSetPerFrameCallExpectations(CompositionTest* test) {
-        EXPECT_CALL(*test->mComposer,
-                    setLayerVisibleRegion(HWC_DISPLAY, HWC_LAYER,
-                                          std::vector<IComposerClient::Rect>({IComposerClient::Rect(
-                                                  {0, 0, LayerProperties::WIDTH,
-                                                   LayerProperties::HEIGHT})})))
-                .Times(1);
+        if (!test->mDisplayOff) {
+            EXPECT_CALL(*test->mComposer,
+                        setLayerVisibleRegion(HWC_DISPLAY, HWC_LAYER,
+                                              std::vector<IComposerClient::Rect>(
+                                                      {IComposerClient::Rect(
+                                                              {0, 0, LayerProperties::WIDTH,
+                                                               LayerProperties::HEIGHT})})))
+                    .Times(1);
+        }
     }
 
     static void setupHwcSetPerFrameColorCallExpectations(CompositionTest* test) {
-        EXPECT_CALL(*test->mComposer, setLayerSurfaceDamage(HWC_DISPLAY, HWC_LAYER, _)).Times(1);
+        if (!test->mDisplayOff) {
+            EXPECT_CALL(*test->mComposer, setLayerSurfaceDamage(HWC_DISPLAY, HWC_LAYER, _))
+                    .Times(1);
 
-        // TODO: use COLOR
-        EXPECT_CALL(*test->mComposer,
-                    setLayerColor(HWC_DISPLAY, HWC_LAYER,
-                                  IComposerClient::Color({0xff, 0xff, 0xff, 0xff})))
-                .Times(1);
+            // TODO: use COLOR
+            EXPECT_CALL(*test->mComposer,
+                        setLayerColor(HWC_DISPLAY, HWC_LAYER,
+                                      IComposerClient::Color({0xff, 0xff, 0xff, 0xff})))
+                    .Times(1);
+        }
     }
 
     static void setupHwcSetPerFrameBufferCallExpectations(CompositionTest* test) {
-        EXPECT_CALL(*test->mComposer, setLayerSurfaceDamage(HWC_DISPLAY, HWC_LAYER, _)).Times(1);
-        EXPECT_CALL(*test->mComposer, setLayerBuffer(HWC_DISPLAY, HWC_LAYER, _, _, _)).Times(1);
+        if (!test->mDisplayOff) {
+            EXPECT_CALL(*test->mComposer, setLayerSurfaceDamage(HWC_DISPLAY, HWC_LAYER, _))
+                    .Times(1);
+            EXPECT_CALL(*test->mComposer, setLayerBuffer(HWC_DISPLAY, HWC_LAYER, _, _, _)).Times(1);
+        }
 
         setupBufferLayerPostFrameCallExpectations(test);
     }
@@ -940,9 +957,11 @@
     static constexpr HWC2::Composition TYPE = static_cast<HWC2::Composition>(CompositionType);
 
     static void setupHwcSetCallExpectations(CompositionTest* test) {
-        EXPECT_CALL(*test->mComposer,
-                    setLayerCompositionType(HWC_DISPLAY, HWC_LAYER, CompositionType))
-                .Times(1);
+        if (!test->mDisplayOff) {
+            EXPECT_CALL(*test->mComposer,
+                        setLayerCompositionType(HWC_DISPLAY, HWC_LAYER, CompositionType))
+                    .Times(1);
+        }
     }
 
     static void setupHwcGetCallExpectations(CompositionTest* test) {
@@ -956,9 +975,11 @@
     static constexpr HWC2::Composition TYPE = static_cast<HWC2::Composition>(FinalCompositionType);
 
     static void setupHwcSetCallExpectations(CompositionTest* test) {
-        EXPECT_CALL(*test->mComposer,
-                    setLayerCompositionType(HWC_DISPLAY, HWC_LAYER, InitialCompositionType))
-                .Times(1);
+        if (!test->mDisplayOff) {
+            EXPECT_CALL(*test->mComposer,
+                        setLayerCompositionType(HWC_DISPLAY, HWC_LAYER, InitialCompositionType))
+                    .Times(1);
+        }
     }
 
     static void setupHwcGetCallExpectations(CompositionTest* test) {
@@ -1341,6 +1362,7 @@
  */
 
 TEST_F(CompositionTest, displayOffHWCComposedNormalBufferLayerWithDirtyGeometry) {
+    mDisplayOff = true;
     displayRefreshCompositionDirtyGeometry<CompositionCase<
             PoweredOffDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
             KeepCompositionTypeVariant<IComposerClient::Composition::DEVICE>,
@@ -1348,6 +1370,7 @@
 }
 
 TEST_F(CompositionTest, displayOffHWCComposedNormalBufferLayerWithDirtyFrame) {
+    mDisplayOff = true;
     displayRefreshCompositionDirtyFrame<CompositionCase<
             PoweredOffDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
             KeepCompositionTypeVariant<IComposerClient::Composition::DEVICE>,
@@ -1355,6 +1378,7 @@
 }
 
 TEST_F(CompositionTest, displayOffREComposedNormalBufferLayer) {
+    mDisplayOff = true;
     displayRefreshCompositionDirtyFrame<CompositionCase<
             PoweredOffDisplaySetupVariant, BufferLayerVariant<DefaultLayerProperties>,
             ChangeCompositionTypeVariant<IComposerClient::Composition::DEVICE,