squeezelite-esp32/components/spotify/cspot/bell/main/io/include/CircularBuffer.h

#pragma once

#include <cstdint>  // for uint8_t
#include <cstring>  // for size_t
#include <memory>   // for unique_ptr
#include <mutex>    // for mutex
#include <vector>   // for vector

#include "WrappedSemaphore.h"  // for WrappedSemaphore

namespace bell {
class CircularBuffer {
 public:
  CircularBuffer(size_t dataCapacity);

  std::unique_ptr<bell::WrappedSemaphore> dataSemaphore;

  size_t size() const { return dataSize; }

  size_t capacity() const { return dataCapacity; }

  size_t write(const uint8_t* data, size_t bytes);
  size_t read(uint8_t* data, size_t bytes);
  void emptyBuffer();
  void emptyExcept(size_t size);

 private:
  std::mutex bufferMutex;
  size_t begIndex = 0;
  size_t endIndex = 0;
  size_t dataSize = 0;
  size_t dataCapacity = 0;
  std::vector<uint8_t> buffer;
};
}  // namespace bell