Function prepare_session

src/board_controller/board_controller.cpp:81–331

int prepare_session (int board_id, const char *json_brainflow_input_params)
{
    std::lock_guard<std::mutex> lock (mutex);

    Board::board_logger->info ("incoming json: {}", json_brainflow_input_params);
    struct BrainFlowInputParams params;
    int res = string_to_brainflow_input_params (json_brainflow_input_params, &params);
    if (res != (int)BrainFlowExitCodes::STATUS_OK)
    {
        return res;
    }

    std::pair<int, struct BrainFlowInputParams> key = get_key (board_id, params);
    if (boards.find (key) != boards.end ())
    {
        Board::board_logger->error (
            "Board with id {} and the same config already exists", board_id);
        return (int)BrainFlowExitCodes::ANOTHER_BOARD_IS_CREATED_ERROR;
    }

    std::shared_ptr<Board> board = NULL;
    switch (static_cast<BoardIds> (board_id))
    {
        case BoardIds::PLAYBACK_FILE_BOARD:
            board = std::shared_ptr<Board> (new PlaybackFileBoard (params));
            break;
        case BoardIds::STREAMING_BOARD:
            board = std::shared_ptr<Board> (new StreamingBoard (params));
            break;
        case BoardIds::SYNTHETIC_BOARD:
            board = std::shared_ptr<Board> (new SyntheticBoard (params));
            break;
        case BoardIds::CYTON_BOARD:
            board = std::shared_ptr<Board> (new Cyton (params));
            break;
        case BoardIds::GANGLION_BOARD:
            board = std::shared_ptr<Board> (new Ganglion (params));
            break;
        case BoardIds::CYTON_DAISY_BOARD:
            board = std::shared_ptr<Board> (new CytonDaisy (params));
            break;
        case BoardIds::GALEA_BOARD:
            board = std::shared_ptr<Board> (new Galea (params));
            break;
        case BoardIds::GANGLION_WIFI_BOARD:
            board = std::shared_ptr<Board> (new GanglionWifi (params));
            break;
        case BoardIds::CYTON_WIFI_BOARD:
            board = std::shared_ptr<Board> (new CytonWifi (params));
            break;
        case BoardIds::CYTON_DAISY_WIFI_BOARD:
            board = std::shared_ptr<Board> (new CytonDaisyWifi (params));
            break;
        case BoardIds::BRAINBIT_BOARD:
            board = std::shared_ptr<Board> (new BrainBit (params));
            break;
        case BoardIds::UNICORN_BOARD:
            board = std::shared_ptr<Board> (new UnicornBoard (params));