commit df336d9f770ba18e4a25513694b3e4fc7b2bbc65
author Lloyd Pique <lpique@google.com> Thu Mar 07 21:38:42 2019 -0800
committer Lloyd Pique <lpique@google.com> Fri Sep 06 14:14:39 2019 -0700
tree 1887ffb9968c8aa201fa8acd2956ed25607c4587
parent c668734cece8d71ead434517e0a4fa9752bd79ce

SF: Restructure OutputLayer creation to remove displayId argument

The existing code was explicitly passing the displayId when creating an
OutputLayer, so that a HWC2::Layer could be created if applicable.

This patch makes a quick adjustment to the code so that the
compositionengine::Display instance overrides the base createOutputLayer
logic to create the HWC2::Layer, as it knows the displayId itself.

This is a minor cleanup prior to moving computeVisibleLayers to the
Output class.

Test: atest libsurfaceflinger_unittest libcompositionengine_test
Test: go/wm-smoke
Bug: 121291683
Change-Id: Ic7224ba445084b833b8c344436397372b2153d42

services/surfaceflinger/CompositionEngine/tests/OutputLayerTest.cpp

diff --git a/services/surfaceflinger/CompositionEngine/tests/OutputLayerTest.cpp b/services/surfaceflinger/CompositionEngine/tests/OutputLayerTest.cpp
index 65691ff..b73c47b 100644
--- a/services/surfaceflinger/CompositionEngine/tests/OutputLayerTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/OutputLayerTest.cpp
@@ -36,8 +36,6 @@
 using testing::ReturnRef;
 using testing::StrictMock;
 
-constexpr DisplayId DEFAULT_DISPLAY_ID = DisplayId{42};
-
 constexpr auto TR_IDENT = 0u;
 constexpr auto TR_FLP_H = HAL_TRANSFORM_FLIP_H;
 constexpr auto TR_FLP_V = HAL_TRANSFORM_FLIP_V;
@@ -83,35 +81,27 @@
 TEST_F(OutputLayerTest, canInstantiateOutputLayer) {}
 
 /*
- * OutputLayer::initialize()
+ * OutputLayer::setHwcLayer()
  */
 
-TEST_F(OutputLayerTest, initializingOutputLayerWithoutHwcDoesNothingInteresting) {
+TEST_F(OutputLayerTest, settingNullHwcLayerSetsEmptyHwcState) {
     StrictMock<compositionengine::mock::CompositionEngine> compositionEngine;
 
-    mOutputLayer.initialize(compositionEngine, std::nullopt);
+    mOutputLayer.setHwcLayer(nullptr);
 
     EXPECT_FALSE(mOutputLayer.getState().hwc);
 }
 
-TEST_F(OutputLayerTest, initializingOutputLayerWithHwcDisplayCreatesHwcLayer) {
-    StrictMock<compositionengine::mock::CompositionEngine> compositionEngine;
-    StrictMock<android::mock::HWComposer> hwc;
-    StrictMock<HWC2::mock::Layer> hwcLayer;
+TEST_F(OutputLayerTest, settingHwcLayerSetsHwcState) {
+    auto hwcLayer = std::make_shared<StrictMock<HWC2::mock::Layer>>();
 
-    EXPECT_CALL(compositionEngine, getHwComposer()).WillOnce(ReturnRef(hwc));
-    EXPECT_CALL(hwc, createLayer(DEFAULT_DISPLAY_ID)).WillOnce(Return(&hwcLayer));
-
-    mOutputLayer.initialize(compositionEngine, DEFAULT_DISPLAY_ID);
+    mOutputLayer.setHwcLayer(hwcLayer);
 
     const auto& outputLayerState = mOutputLayer.getState();
     ASSERT_TRUE(outputLayerState.hwc);
 
     const auto& hwcState = *outputLayerState.hwc;
-    EXPECT_EQ(&hwcLayer, hwcState.hwcLayer.get());
-
-    EXPECT_CALL(hwc, destroyLayer(DEFAULT_DISPLAY_ID, &hwcLayer));
-    mOutputLayer.editState().hwc.reset();
+    EXPECT_EQ(hwcLayer, hwcState.hwcLayer);
 }
 
 /*