1 // Copyright 2018 The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 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.#pragma once 14 #pragma once 15 16 #include <memory> 17 18 class ANativeWindowBuffer; 19 20 namespace aemu { 21 22 class AndroidBufferQueue { 23 public: 24 static constexpr int kCapacity = 3; 25 26 class Item { 27 public: 28 Item(ANativeWindowBuffer* buf = 0, int fd = -1) : buffer(buf)29 buffer(buf), fenceFd(fd) { } 30 ANativeWindowBuffer* buffer = 0; 31 int fenceFd = -1; 32 }; 33 34 AndroidBufferQueue(); 35 ~AndroidBufferQueue(); 36 37 void cancelBuffer(const Item& item); 38 39 void queueBuffer(const Item& item); 40 void dequeueBuffer(Item* outItem); 41 42 bool try_dequeueBuffer(Item* outItem); 43 44 private: 45 class Impl; 46 std::unique_ptr<Impl> mImpl; 47 }; // namespace aemu 48 49 } // namespace qemu