1 /*
2 * Copyright 2019 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 #pragma once
18
19 #include <memory>
20
21 #include <compositionengine/Display.h>
22 #include <compositionengine/DisplayColorProfile.h>
23 #include <compositionengine/DisplayCreationArgs.h>
24 #include <compositionengine/RenderSurface.h>
25 #include <compositionengine/impl/Output.h>
26 #include <ui/PixelFormat.h>
27 #include <ui/Size.h>
28
29 #include "DisplayHardware/DisplayIdentification.h"
30 #include "DisplayHardware/HWComposer.h"
31 #include "DisplayHardware/PowerAdvisor.h"
32
33 namespace android::compositionengine {
34
35 class CompositionEngine;
36
37 namespace impl {
38
39 // The implementation class contains the common implementation, but does not
40 // actually contain the final display state.
41 class Display : public compositionengine::impl::Output, public virtual compositionengine::Display {
42 public:
43 virtual ~Display();
44
45 // compositionengine::Output overrides
46 std::optional<DisplayId> getDisplayId() const override;
47 bool isValid() const override;
48 void dump(std::string&) const override;
49 using compositionengine::impl::Output::setReleasedLayers;
50 void setReleasedLayers(const CompositionRefreshArgs&) override;
51 void setColorTransform(const CompositionRefreshArgs&) override;
52 void setColorProfile(const ColorProfile&) override;
53 void chooseCompositionStrategy() override;
54 bool getSkipColorTransform() const override;
55 compositionengine::Output::FrameFences presentAndGetFrameFences() override;
56 void setExpensiveRenderingExpected(bool) override;
57 void finishFrame(const CompositionRefreshArgs&) override;
58
59 // compositionengine::Display overrides
60 DisplayId getId() const override;
61 bool isSecure() const override;
62 bool isVirtual() const override;
63 void disconnect() override;
64 void createDisplayColorProfile(
65 const compositionengine::DisplayColorProfileCreationArgs&) override;
66 void createRenderSurface(const compositionengine::RenderSurfaceCreationArgs&) override;
67 void createClientCompositionCache(uint32_t cacheSize) override;
68
69 // Internal helpers used by chooseCompositionStrategy()
70 using ChangedTypes = android::HWComposer::DeviceRequestedChanges::ChangedTypes;
71 using DisplayRequests = android::HWComposer::DeviceRequestedChanges::DisplayRequests;
72 using LayerRequests = android::HWComposer::DeviceRequestedChanges::LayerRequests;
73 using ClientTargetProperty = android::HWComposer::DeviceRequestedChanges::ClientTargetProperty;
74 virtual bool anyLayersRequireClientComposition() const;
75 virtual bool allLayersRequireClientComposition() const;
76 virtual void applyChangedTypesToLayers(const ChangedTypes&);
77 virtual void applyDisplayRequests(const DisplayRequests&);
78 virtual void applyLayerRequestsToLayers(const LayerRequests&);
79 virtual void applyClientTargetRequests(const ClientTargetProperty&);
80
81 // Internal
82 virtual void setConfiguration(const compositionengine::DisplayCreationArgs&);
83 std::unique_ptr<compositionengine::OutputLayer> createOutputLayer(const sp<LayerFE>&) const;
84
85 private:
86 bool mIsVirtual = false;
87 bool mIsDisconnected = false;
88 DisplayId mId;
89 Hwc2::PowerAdvisor* mPowerAdvisor = nullptr;
90 };
91
92 // This template factory function standardizes the implementation details of the
93 // final class using the types actually required by the implementation. This is
94 // not possible to do in the base class as those types may not even be visible
95 // to the base code.
96 template <typename BaseDisplay, typename CompositionEngine>
createDisplayTemplated(const CompositionEngine & compositionEngine,const compositionengine::DisplayCreationArgs & args)97 std::shared_ptr<BaseDisplay> createDisplayTemplated(
98 const CompositionEngine& compositionEngine,
99 const compositionengine::DisplayCreationArgs& args) {
100 auto display = createOutputTemplated<BaseDisplay>(compositionEngine);
101
102 display->setConfiguration(args);
103
104 return display;
105 }
106
107 std::shared_ptr<Display> createDisplay(const compositionengine::CompositionEngine&,
108 const compositionengine::DisplayCreationArgs&);
109
110 } // namespace impl
111 } // namespace android::compositionengine
112