[移动开发]C++读取二进制文件

/**
     * 读取文件数据到vector中
     * 正常的RGB文件
     * @param file_name  文件名
     */
    std::vector<uint8_t> read_file(const std::string &file_name)
    {
      int begin, end;

      std::ifstream file(file_name, std::ios::in | std::ios::binary);
      if (!file)
      {
        LOG(FATAL) << "input file " << file_name << " not found";
        exit(-1);
      }

      begin = file.tellg();
      file.seekg(0, std::ios::end);
      end = file.tellg();
      size_t len = end - begin;
      LOG(INFO) << "len: " << len;

      std::vector<uint8_t> img_bytes(len);
      file.seekg(0, std::ios::beg);
      file.read(reinterpret_cast<char *>(img_bytes.data()), len);

      return img_bytes;
    }