file_receiver.h

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#ifndef FILE_RECEIVER_H_
#define FILE_RECEIVER_H_
 
#include <array>
#include <fstream>
#include <ios>
#include <iostream>
#include <string>
 
#include "mac_data_receiver.h"
 
class FileReceiver : public MacDataReceiver {
 public:
  static constexpr size_t kFileStreamRxSize = (2048u);
  static constexpr size_t kFileStreamLocalRxBufSize = (kFileStreamRxSize * 10u);
 
  explicit FileReceiver(std::string &file_name);
  ~FileReceiver() override;
 
  size_t Load(unsigned char *destination, size_t requested_bytes) final;
 
 private:
  std::string file_name_;
  std::ifstream data_stream_;
  std::array<uint8_t, FileReceiver::kFileStreamLocalRxBufSize> local_rx_buffer_;
 
  size_t data_available_;
  size_t data_start_offset_;
};
 
#endif  // FILE_RECEIVER_H_