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 #ifndef ANDROID_DETACHED_BUFFER_HUB_HANDLE_H 17 #define ANDROID_DETACHED_BUFFER_HUB_HANDLE_H 18 #include <pdx/channel_handle.h> 19 #include <memory> 20 namespace android { 21 // A wrapper that holds a pdx::LocalChannelHandle object. From the handle, a BufferHub buffer can be 22 // created. Current implementation assumes that the underlying transport is using libpdx (thus 23 // holding a pdx::LocalChannelHandle object), but future implementation can change it to a Binder 24 // backend if ever needed. 25 class DetachedBufferHandle { 26 public: Create(pdx::LocalChannelHandle handle)27 static std::unique_ptr<DetachedBufferHandle> Create(pdx::LocalChannelHandle handle) { 28 return std::unique_ptr<DetachedBufferHandle>(new DetachedBufferHandle(std::move(handle))); 29 } 30 // Accessors to get or take the internal pdx::LocalChannelHandle. handle()31 pdx::LocalChannelHandle& handle() { return mHandle; } handle()32 const pdx::LocalChannelHandle& handle() const { return mHandle; } 33 // Returns whether the DetachedBufferHandle holds a BufferHub channel. isValid()34 bool isValid() const { return mHandle.valid(); } 35 private: 36 // Constructs a DetachedBufferHandle from a pdx::LocalChannelHandle. DetachedBufferHandle(pdx::LocalChannelHandle handle)37 explicit DetachedBufferHandle(pdx::LocalChannelHandle handle) : mHandle(std::move(handle)) {} 38 pdx::LocalChannelHandle mHandle; 39 }; 40 } // namespace android 41 #endif // ANDROID_DETACHED_BUFFER_HUB_HANDLE_H 42