1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 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. 14 */ 15 16 #ifndef AUDIO_CACHE_H 17 #define AUDIO_CACHE_H 18 19 #include <cstdint> 20 #include <mutex> 21 22 namespace KWS { 23 class AudioCache { 24 public: 25 AudioCache(); 26 virtual ~AudioCache(); 27 bool Init(int32_t maxSize); 28 size_t GetCapturedBuffer(uintptr_t &samplePtr); 29 bool AppendBuffer(int32_t bufferSize, const uint8_t *buffer); 30 31 private: 32 int32_t maxBufferSize_; 33 int32_t left_; 34 int32_t right_; 35 uint8_t *buffer_; 36 bool prepared_; 37 }; 38 } // namespace KWS 39 #endif // AUDIO_CACHE_H