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1 /*
2  * Copyright (C) 2021 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 #pragma once
17 #include <android/hardware/camera/device/3.4/ICameraDeviceSession.h>
18 #include <mutex>
19 #include <set>
20 #include <vector>
21 #include "cached_stream_buffer.h"
22 
23 namespace android::hardware::camera::device::V3_4::implementation {
24 
25 class StreamBufferCache {
26  public:
27   std::shared_ptr<CachedStreamBuffer> get(uint64_t buffer_id);
28   void remove(uint64_t buffer_id);
29   void update(const StreamBuffer& buffer);
30   void clear();
31   void removeStreamsExcept(std::set<int32_t> streams_to_keep = {});
32 
33  private:
34   std::mutex mutex_;
35   std::vector<std::shared_ptr<CachedStreamBuffer>> cache_;
36 };
37 
38 }  // namespace android::hardware::camera::device::V3_4::implementation
39