openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.

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#ifndef TOUCH_H
#define TOUCH_H
#ifdef __cplusplus
extern "C" {
#endif
typedef struct TouchState {
int fd;
int last_x, last_y;
} TouchState;
void touch_init(TouchState *s);
int touch_poll(TouchState *s, int *out_x, int *out_y);
#ifdef __cplusplus
}
#endif
#endif