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1 /*
2  * Copyright 2018 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include <compositionengine/CompositionRefreshArgs.h>
18 #include <compositionengine/LayerFECompositionState.h>
19 #include <compositionengine/impl/CompositionEngine.h>
20 #include <compositionengine/mock/LayerFE.h>
21 #include <compositionengine/mock/Output.h>
22 #include <compositionengine/mock/OutputLayer.h>
23 #include <gtest/gtest.h>
24 #include <renderengine/mock/RenderEngine.h>
25 
26 #include "MockHWComposer.h"
27 #include "TimeStats/TimeStats.h"
28 
29 namespace android::compositionengine {
30 namespace {
31 
32 using ::testing::_;
33 using ::testing::InSequence;
34 using ::testing::Ref;
35 using ::testing::Return;
36 using ::testing::ReturnRef;
37 using ::testing::SaveArg;
38 using ::testing::StrictMock;
39 
40 struct CompositionEngineTest : public testing::Test {
41     android::mock::HWComposer* mHwc = new StrictMock<android::mock::HWComposer>();
42     renderengine::mock::RenderEngine* mRenderEngine =
43             new StrictMock<renderengine::mock::RenderEngine>();
44     std::shared_ptr<TimeStats> mTimeStats;
45 
46     impl::CompositionEngine mEngine;
47     CompositionRefreshArgs mRefreshArgs;
48 
49     std::shared_ptr<mock::Output> mOutput1{std::make_shared<StrictMock<mock::Output>>()};
50     std::shared_ptr<mock::Output> mOutput2{std::make_shared<StrictMock<mock::Output>>()};
51     std::shared_ptr<mock::Output> mOutput3{std::make_shared<StrictMock<mock::Output>>()};
52 };
53 
TEST_F(CompositionEngineTest,canInstantiateCompositionEngine)54 TEST_F(CompositionEngineTest, canInstantiateCompositionEngine) {
55     auto engine = impl::createCompositionEngine();
56     EXPECT_TRUE(engine.get() != nullptr);
57 }
58 
TEST_F(CompositionEngineTest,canSetHWComposer)59 TEST_F(CompositionEngineTest, canSetHWComposer) {
60     mEngine.setHwComposer(std::unique_ptr<android::HWComposer>(mHwc));
61 
62     EXPECT_EQ(mHwc, &mEngine.getHwComposer());
63 }
64 
TEST_F(CompositionEngineTest,canSetRenderEngine)65 TEST_F(CompositionEngineTest, canSetRenderEngine) {
66     mEngine.setRenderEngine(std::unique_ptr<renderengine::RenderEngine>(mRenderEngine));
67 
68     EXPECT_EQ(mRenderEngine, &mEngine.getRenderEngine());
69 }
70 
TEST_F(CompositionEngineTest,canSetTimeStats)71 TEST_F(CompositionEngineTest, canSetTimeStats) {
72     mEngine.setTimeStats(mTimeStats);
73 
74     EXPECT_EQ(mTimeStats.get(), &mEngine.getTimeStats());
75 }
76 
77 /*
78  * CompositionEngine::present
79  */
80 
81 struct CompositionEnginePresentTest : public CompositionEngineTest {
82     struct CompositionEnginePartialMock : public impl::CompositionEngine {
83         // These are the overridable functions CompositionEngine::present() may
84         // call, and have separate test coverage.
85         MOCK_METHOD1(preComposition, void(CompositionRefreshArgs&));
86     };
87 
88     StrictMock<CompositionEnginePartialMock> mEngine;
89 };
90 
TEST_F(CompositionEnginePresentTest,worksWithEmptyRequest)91 TEST_F(CompositionEnginePresentTest, worksWithEmptyRequest) {
92     // present() always calls preComposition()
93     EXPECT_CALL(mEngine, preComposition(Ref(mRefreshArgs)));
94 
95     mEngine.present(mRefreshArgs);
96 }
97 
TEST_F(CompositionEnginePresentTest,worksAsExpected)98 TEST_F(CompositionEnginePresentTest, worksAsExpected) {
99     // Expect calls to in a certain sequence
100     InSequence seq;
101 
102     // present() always calls preComposition()
103     EXPECT_CALL(mEngine, preComposition(Ref(mRefreshArgs)));
104 
105     // The first step in presenting is to make sure all outputs are prepared.
106     EXPECT_CALL(*mOutput1, prepare(Ref(mRefreshArgs), _));
107     EXPECT_CALL(*mOutput2, prepare(Ref(mRefreshArgs), _));
108     EXPECT_CALL(*mOutput3, prepare(Ref(mRefreshArgs), _));
109 
110     // The next step in presenting is to make sure all outputs have the latest
111     // state from the front-end (SurfaceFlinger).
112     EXPECT_CALL(*mOutput1, updateLayerStateFromFE(Ref(mRefreshArgs)));
113     EXPECT_CALL(*mOutput2, updateLayerStateFromFE(Ref(mRefreshArgs)));
114     EXPECT_CALL(*mOutput3, updateLayerStateFromFE(Ref(mRefreshArgs)));
115 
116     // The last step is to actually present each output.
117     EXPECT_CALL(*mOutput1, present(Ref(mRefreshArgs)));
118     EXPECT_CALL(*mOutput2, present(Ref(mRefreshArgs)));
119     EXPECT_CALL(*mOutput3, present(Ref(mRefreshArgs)));
120 
121     mRefreshArgs.outputs = {mOutput1, mOutput2, mOutput3};
122     mEngine.present(mRefreshArgs);
123 }
124 
125 /*
126  * CompositionEngine::updateCursorAsync
127  */
128 
129 struct CompositionEngineUpdateCursorAsyncTest : public CompositionEngineTest {
130 public:
131     struct Layer {
Layerandroid::compositionengine::__anon95ee30f80111::CompositionEngineUpdateCursorAsyncTest::Layer132         Layer() { EXPECT_CALL(outputLayer, getLayerFE()).WillRepeatedly(ReturnRef(layerFE)); }
133 
134         StrictMock<mock::OutputLayer> outputLayer;
135         StrictMock<mock::LayerFE> layerFE;
136         LayerFECompositionState layerFEState;
137     };
138 
CompositionEngineUpdateCursorAsyncTestandroid::compositionengine::__anon95ee30f80111::CompositionEngineUpdateCursorAsyncTest139     CompositionEngineUpdateCursorAsyncTest() {
140         EXPECT_CALL(*mOutput1, getOutputLayerCount()).WillRepeatedly(Return(0u));
141         EXPECT_CALL(*mOutput1, getOutputLayerOrderedByZByIndex(_)).Times(0);
142 
143         EXPECT_CALL(*mOutput2, getOutputLayerCount()).WillRepeatedly(Return(1u));
144         EXPECT_CALL(*mOutput2, getOutputLayerOrderedByZByIndex(0))
145                 .WillRepeatedly(Return(&mOutput2Layer1.outputLayer));
146 
147         EXPECT_CALL(*mOutput3, getOutputLayerCount()).WillRepeatedly(Return(2u));
148         EXPECT_CALL(*mOutput3, getOutputLayerOrderedByZByIndex(0))
149                 .WillRepeatedly(Return(&mOutput3Layer1.outputLayer));
150         EXPECT_CALL(*mOutput3, getOutputLayerOrderedByZByIndex(1))
151                 .WillRepeatedly(Return(&mOutput3Layer2.outputLayer));
152     }
153 
154     Layer mOutput2Layer1;
155     Layer mOutput3Layer1;
156     Layer mOutput3Layer2;
157 };
158 
TEST_F(CompositionEngineUpdateCursorAsyncTest,handlesNoOutputs)159 TEST_F(CompositionEngineUpdateCursorAsyncTest, handlesNoOutputs) {
160     mEngine.updateCursorAsync(mRefreshArgs);
161 }
162 
TEST_F(CompositionEngineUpdateCursorAsyncTest,handlesNoLayersBeingCursorLayers)163 TEST_F(CompositionEngineUpdateCursorAsyncTest, handlesNoLayersBeingCursorLayers) {
164     EXPECT_CALL(mOutput3Layer1.outputLayer, isHardwareCursor()).WillRepeatedly(Return(false));
165     EXPECT_CALL(mOutput3Layer2.outputLayer, isHardwareCursor()).WillRepeatedly(Return(false));
166     EXPECT_CALL(mOutput2Layer1.outputLayer, isHardwareCursor()).WillRepeatedly(Return(false));
167 
168     mRefreshArgs.outputs = {mOutput1, mOutput2, mOutput3};
169 
170     mEngine.updateCursorAsync(mRefreshArgs);
171 }
172 
TEST_F(CompositionEngineUpdateCursorAsyncTest,handlesMultipleLayersBeingCursorLayers)173 TEST_F(CompositionEngineUpdateCursorAsyncTest, handlesMultipleLayersBeingCursorLayers) {
174     {
175         InSequence seq;
176         EXPECT_CALL(mOutput2Layer1.outputLayer, isHardwareCursor()).WillRepeatedly(Return(true));
177         EXPECT_CALL(mOutput2Layer1.layerFE, prepareCompositionState(LayerFE::StateSubset::Cursor));
178         EXPECT_CALL(mOutput2Layer1.outputLayer, writeCursorPositionToHWC());
179     }
180 
181     {
182         InSequence seq;
183         EXPECT_CALL(mOutput3Layer1.outputLayer, isHardwareCursor()).WillRepeatedly(Return(true));
184         EXPECT_CALL(mOutput3Layer1.layerFE, prepareCompositionState(LayerFE::StateSubset::Cursor));
185         EXPECT_CALL(mOutput3Layer1.outputLayer, writeCursorPositionToHWC());
186     }
187 
188     {
189         InSequence seq;
190         EXPECT_CALL(mOutput3Layer2.outputLayer, isHardwareCursor()).WillRepeatedly(Return(true));
191         EXPECT_CALL(mOutput3Layer2.layerFE, prepareCompositionState(LayerFE::StateSubset::Cursor));
192         EXPECT_CALL(mOutput3Layer2.outputLayer, writeCursorPositionToHWC());
193     }
194 
195     mRefreshArgs.outputs = {mOutput1, mOutput2, mOutput3};
196 
197     mEngine.updateCursorAsync(mRefreshArgs);
198 }
199 
200 /*
201  * CompositionEngine::preComposition
202  */
203 
204 struct CompositionTestPreComposition : public CompositionEngineTest {
205     sp<StrictMock<mock::LayerFE>> mLayer1FE{new StrictMock<mock::LayerFE>()};
206     sp<StrictMock<mock::LayerFE>> mLayer2FE{new StrictMock<mock::LayerFE>()};
207     sp<StrictMock<mock::LayerFE>> mLayer3FE{new StrictMock<mock::LayerFE>()};
208 };
209 
TEST_F(CompositionTestPreComposition,preCompositionSetsFrameTimestamp)210 TEST_F(CompositionTestPreComposition, preCompositionSetsFrameTimestamp) {
211     const nsecs_t before = systemTime(SYSTEM_TIME_MONOTONIC);
212     mEngine.preComposition(mRefreshArgs);
213     const nsecs_t after = systemTime(SYSTEM_TIME_MONOTONIC);
214 
215     // The frame timestamp should be between the before and after timestamps
216     EXPECT_GE(mEngine.getLastFrameRefreshTimestamp(), before);
217     EXPECT_LE(mEngine.getLastFrameRefreshTimestamp(), after);
218 }
219 
TEST_F(CompositionTestPreComposition,preCompositionInvokesLayerPreCompositionWithFrameTimestamp)220 TEST_F(CompositionTestPreComposition, preCompositionInvokesLayerPreCompositionWithFrameTimestamp) {
221     nsecs_t ts1 = 0;
222     nsecs_t ts2 = 0;
223     nsecs_t ts3 = 0;
224     EXPECT_CALL(*mLayer1FE, onPreComposition(_)).WillOnce(DoAll(SaveArg<0>(&ts1), Return(false)));
225     EXPECT_CALL(*mLayer2FE, onPreComposition(_)).WillOnce(DoAll(SaveArg<0>(&ts2), Return(false)));
226     EXPECT_CALL(*mLayer3FE, onPreComposition(_)).WillOnce(DoAll(SaveArg<0>(&ts3), Return(false)));
227 
228     mRefreshArgs.outputs = {mOutput1};
229     mRefreshArgs.layers = {mLayer1FE, mLayer2FE, mLayer3FE};
230 
231     mEngine.preComposition(mRefreshArgs);
232 
233     // Each of the onPreComposition calls should used the same refresh timestamp
234     EXPECT_EQ(ts1, mEngine.getLastFrameRefreshTimestamp());
235     EXPECT_EQ(ts2, mEngine.getLastFrameRefreshTimestamp());
236     EXPECT_EQ(ts3, mEngine.getLastFrameRefreshTimestamp());
237 }
238 
TEST_F(CompositionTestPreComposition,preCompositionDefaultsToNoUpdateNeeded)239 TEST_F(CompositionTestPreComposition, preCompositionDefaultsToNoUpdateNeeded) {
240     EXPECT_CALL(*mLayer1FE, onPreComposition(_)).WillOnce(Return(false));
241     EXPECT_CALL(*mLayer2FE, onPreComposition(_)).WillOnce(Return(false));
242     EXPECT_CALL(*mLayer3FE, onPreComposition(_)).WillOnce(Return(false));
243 
244     mEngine.setNeedsAnotherUpdateForTest(true);
245 
246     mRefreshArgs.outputs = {mOutput1};
247     mRefreshArgs.layers = {mLayer1FE, mLayer2FE, mLayer3FE};
248 
249     mEngine.preComposition(mRefreshArgs);
250 
251     // The call should have cleared the needsAnotherUpdate flag
252     EXPECT_FALSE(mEngine.needsAnotherUpdate());
253 }
254 
TEST_F(CompositionTestPreComposition,preCompositionSetsNeedsAnotherUpdateIfAtLeastOneLayerRequestsIt)255 TEST_F(CompositionTestPreComposition,
256        preCompositionSetsNeedsAnotherUpdateIfAtLeastOneLayerRequestsIt) {
257     EXPECT_CALL(*mLayer1FE, onPreComposition(_)).WillOnce(Return(true));
258     EXPECT_CALL(*mLayer2FE, onPreComposition(_)).WillOnce(Return(false));
259     EXPECT_CALL(*mLayer3FE, onPreComposition(_)).WillOnce(Return(false));
260 
261     mRefreshArgs.outputs = {mOutput1};
262     mRefreshArgs.layers = {mLayer1FE, mLayer2FE, mLayer3FE};
263 
264     mEngine.preComposition(mRefreshArgs);
265 
266     EXPECT_TRUE(mEngine.needsAnotherUpdate());
267 }
268 
269 } // namespace
270 } // namespace android::compositionengine
271