70 lines
2.2 KiB
C++
70 lines
2.2 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 <functional>
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#include <map>
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#include <string>
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#include <vector>
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namespace android::drm_hwcomposer {
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class DrmConnector;
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struct DrmDisplayPipeline;
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// BackendManager is a singleton that manages the registration of Backends and
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// finding a Backend which can be used to create a DrmDisplayPipeline for a
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// DrmConnector.
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class BackendManager {
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public:
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// Backend is the top-level interface for any driver-specific or custom logic
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// for configuring a DrmDisplayPipeline for a DrmConnector, as well as
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// driver-specific or custom composition rules in a CompositionPlanner
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// implementation.
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class Backend {
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public:
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// Backend base class will register a backend called |name| on construction,
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// and deregister on destruction. The name must be unique across all
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// Backends.
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explicit Backend(const std::string &name);
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virtual ~Backend();
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// Create a DrmDisplayPipeline for the given DrmConnector, including
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// creating the CompositionPlanner for this DrmDisplayPipeline.
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virtual std::unique_ptr<DrmDisplayPipeline> CreatePipeline(
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DrmConnector &connector) = 0;
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private:
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std::string name_;
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};
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static BackendManager &GetInstance();
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void RegisterBackend(const std::string &name, Backend *backend);
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void UnregisterBackend(const std::string &name);
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std::unique_ptr<DrmDisplayPipeline> CreatePipelineForConnector(
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DrmConnector &connector);
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private:
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Backend *GetBackendByName(std::string &name);
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BackendManager() = default;
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std::map<std::string, Backend *> available_backends_;
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};
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} // namespace android::drm_hwcomposer
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