{

static GPContextErrorFunc _error_callback(GPContext *context, const char *text, void *data);

static GPContextMessageFunc _message_callback(GPContext *context, const char *text, void *data);

public:

CameraController();

~CameraController();

void init();

void release();

string getport();

void setPort(string port);

bool camera_found();

bool is_initialized();

bool is_halfpressed() { return _halfpressed; }

bool is_busy();

void is_bussy(bool busy);

int capture(const char *filename);

int capture2(const char* filename);

int capture3(const char* filename);

int downloadimage(const char* filename);

int get_settings_value(const char *key, string &val);

int get_settings_choices(const char *key, std::vector<string> &choices);

int set_settings_value(const char *key, const char *val);

int set_settings_value(const char* key, int val);

int apply_autofocus(int camnum, bool enable);

int apply_essential_param_param(int camnum);

void set_essential_param(CAMERA_PARAM param, string value);

private:

Camera *_camera;

GPContext *_context;

bool _halfpressed;

bool _is_busy;

bool _liveview_running;

bool _camera_found;

bool _is_initialized;

bool _save_images;

string port;

void _init_camera();

int _wait_and_handle_event (useconds_t waittime, CameraEventType *type, int download);

void _set_capturetarget(int index);