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74 lines
2.4 KiB
74 lines
2.4 KiB
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HWC_COMPOSER_H
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#define ANDROID_HWC_COMPOSER_H
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#include <functional>
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#include <unordered_map>
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#include <vector>
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#include "Common.h"
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namespace android {
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class Device;
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class Display;
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class Composer {
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public:
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virtual ~Composer() {}
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using HotplugCallback = std::function<void(
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bool /*connected*/, uint32_t /*id*/, uint32_t /*width*/,
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uint32_t /*height*/, uint32_t /*dpiX*/, uint32_t /*dpiY*/,
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uint32_t /*refreshRate*/)>;
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virtual HWC2::Error init(const HotplugCallback& cb) = 0;
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using AddDisplayToDeviceFunction =
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std::function<HWC2::Error(std::unique_ptr<Display>)>;
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// Queries Cuttlefish/Goldfish/System configurations and creates displays
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// for the given Device.
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virtual HWC2::Error createDisplays(
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Device* device,
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const AddDisplayToDeviceFunction& addDisplayToDeviceFn) = 0;
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virtual HWC2::Error createDisplay(
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Device* device, uint32_t displayId, uint32_t width, uint32_t height,
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uint32_t dpiX, uint32_t dpiY, uint32_t refreshRateHz,
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const AddDisplayToDeviceFunction& addDisplayToDeviceFn) = 0;
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virtual HWC2::Error onDisplayDestroy(Display* display) = 0;
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virtual HWC2::Error onDisplayClientTargetSet(Display* display) = 0;
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// Determines if this composer can compose the given layers and requests
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// changes for layers that can't not be composed.
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virtual HWC2::Error validateDisplay(
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Display* display, std::unordered_map<hwc2_layer_t, HWC2::Composition>*
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outLayerCompositionChanges) = 0;
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// Performs the actual composition of layers and presents the composed result
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// to the display.
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virtual HWC2::Error presentDisplay(Display* display,
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int32_t* outPresentFence) = 0;
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};
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} // namespace android
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#endif
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