1 /* 2 * Copyright (c) 2025 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 OHOS_DAUDIO_RING_BUFFER_H 17 #define OHOS_DAUDIO_RING_BUFFER_H 18 19 #include <memory> 20 #include <string> 21 22 #include "daudio_constants.h" 23 #include "daudio_errorcode.h" 24 #include "daudio_log.h" 25 26 namespace OHOS { 27 namespace DistributedHardware { 28 class DaudioRingBuffer { 29 public: 30 DaudioRingBuffer() = default; 31 ~DaudioRingBuffer(); 32 int32_t RingBufferInit(uint8_t *&data); 33 int32_t RingBufferInsert(uint8_t *data, int32_t len); 34 int32_t RingBufferGetData(uint8_t *data, int32_t len); 35 bool CanBufferReadLen(int32_t readLen); 36 37 private: 38 bool GetFullState(); 39 bool GetEmptyState(); 40 int32_t RingBufferInsertOnce(uint8_t *data, int32_t len); 41 int32_t RingBufferGetDataOnce(uint8_t *data, int32_t len); 42 43 private: 44 const int32_t RINGBUFFERLEN = 40960; 45 const int32_t DAUDIO_DATA_SIZE = 4096; 46 uint8_t *array_ = nullptr; 47 int32_t writePos_ = 0; 48 int32_t readPos_ = 0; 49 int32_t tag_ = 0; 50 }; 51 } // namespace DistributedHardware 52 } // namespace OHOS 53 #endif // OHOS_DAUDIO_RING_BUFFER_H