67 lines
2.6 KiB
C++
67 lines
2.6 KiB
C++
/*
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* Copyright (C) 2020 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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#pragma once
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#include <map>
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#include <vector>
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#include "compositor/LayerData.h"
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namespace android::drm_hwcomposer {
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struct DrmKmsPlan;
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class HwcDisplay;
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class HwcLayer;
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class Backend {
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public:
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// Mapping of the CompositionType that the Backend assigned to each
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// HwcLayer.
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using CompositionTypeMap = std::map<const HwcLayer*, CompositionType>;
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struct ValidatedComposition {
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// The resulting composition type for each layer.
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CompositionTypeMap composition_types;
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// The DrmKms resources required for the composition. The lifetime of
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// the DrmKmsPlan ensures that corresponding drm resources are reserved
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// for use by this display. As such, the caller must ensure that the
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// DrmKmsPlan is not destructed before the composition is committed.
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std::shared_ptr<DrmKmsPlan> composition_plan;
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};
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virtual ~Backend() = default;
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virtual ValidatedComposition ValidateDisplay(HwcDisplay* display);
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virtual std::tuple<size_t, size_t> GetClientLayers(
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const HwcDisplay* display, const std::vector<const HwcLayer*>& layers,
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bool use_cursor_plane);
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virtual bool IsClientLayer(const HwcDisplay* display, const HwcLayer* layer);
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protected:
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static ValidatedComposition GetFlattenedComposition(
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const std::vector<const HwcLayer*>& layers);
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static bool HardwareSupportsLayerType(CompositionType comp_type);
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static uint32_t CalcPixOps(const std::vector<const HwcLayer*>& layers,
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size_t first_z, size_t size,
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std::pair<uint32_t, uint32_t> display_size);
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static CompositionTypeMap GetCompositionTypes(
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const std::vector<const HwcLayer*>& layers, size_t client_first_z,
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size_t client_size, bool use_cursor_plane);
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static std::tuple<size_t, size_t> GetExtraClientRange(
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const HwcDisplay* display, const std::vector<const HwcLayer*>& layers,
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size_t client_start, size_t client_size, bool use_cursor_plane);
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};
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} // namespace android::drm_hwcomposer
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