1 // Copyright (C) 2023 The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License") override; 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #pragma once 16 17 #include <memory> 18 #include <optional> 19 #include <unordered_map> 20 21 #include "DrmContext.h" 22 23 namespace gfxstream { 24 namespace magma { 25 26 class DrmDevice; 27 28 // A Connection represents an unique magma object ID namespace. 29 // Magma objects from different connections may share the same ID. 30 class Connection { 31 public: 32 Connection(DrmDevice& device); 33 ~Connection() = default; 34 DISALLOW_COPY_AND_ASSIGN(Connection); 35 Connection(Connection&&) noexcept = default; 36 Connection& operator=(Connection&&) = delete; 37 38 // Get the parent device for this connection. 39 DrmDevice& getDevice(); 40 41 // Creates a new context and returns its ID. Returns nullopt on error. 42 std::optional<uint32_t> createContext(); 43 44 // Returns the context for the given ID, or nullptr if invalid. 45 DrmContext* getContext(uint32_t id); 46 47 private: 48 friend class DrmContext; 49 50 DrmDevice& mDevice; 51 52 // Maps context IDs to contexts. 53 std::unordered_map<uint32_t, DrmContext> mContexts; 54 }; 55 56 } // namespace magma 57 } // namespace gfxstream 58