1 /* 2 * Copyright (C) 2018 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 #ifndef ANDROID_FRAMEWORKS_BUFFERHUB_V1_0_BUFFER_CLIENT_H 18 #define ANDROID_FRAMEWORKS_BUFFERHUB_V1_0_BUFFER_CLIENT_H 19 20 #include <mutex> 21 22 #include <android/frameworks/bufferhub/1.0/IBufferClient.h> 23 #include <bufferhub/BufferNode.h> 24 25 namespace android { 26 namespace frameworks { 27 namespace bufferhub { 28 namespace V1_0 { 29 namespace implementation { 30 31 using hardware::hidl_handle; 32 using hardware::Return; 33 34 // Forward declaration to avoid circular dependency 35 class BufferHubService; 36 37 class BufferClient : public IBufferClient { 38 public: 39 // Creates a server-side buffer client from an existing BufferNode. Note that 40 // this function takes ownership of the shared_ptr. 41 // Returns a raw pointer to the BufferClient on success, nullptr on failure. 42 static BufferClient* create(BufferHubService* service, const std::shared_ptr<BufferNode>& node); 43 44 // Creates a BufferClient from an existing BufferClient. Will share the same BufferNode. BufferClient(const BufferClient & other)45 explicit BufferClient(const BufferClient& other) 46 : mService(other.mService), mBufferNode(other.mBufferNode) {} 47 ~BufferClient(); 48 49 Return<BufferHubStatus> close() override; 50 Return<void> duplicate(duplicate_cb _hidl_cb) override; 51 52 // Non-binder functions getBufferNode()53 const std::shared_ptr<BufferNode>& getBufferNode() const { return mBufferNode; } 54 55 private: BufferClient(wp<BufferHubService> service,const std::shared_ptr<BufferNode> & node)56 BufferClient(wp<BufferHubService> service, const std::shared_ptr<BufferNode>& node) 57 : mService(service), mBufferNode(node) {} 58 59 sp<BufferHubService> getService(); 60 61 wp<BufferHubService> mService; 62 63 std::mutex mClosedMutex; 64 bool mClosed GUARDED_BY(mClosedMutex) = false; 65 66 std::shared_ptr<BufferNode> mBufferNode; 67 }; 68 69 } // namespace implementation 70 } // namespace V1_0 71 } // namespace bufferhub 72 } // namespace frameworks 73 } // namespace android 74 75 #endif 76