1 #ifndef DSYS2_H_

2 #define DSYS2_H_

3

4 #include <stdio.h>

5

6 struct dsys_demo;

7 struct dsys_event;

8

9 typedef float demotime_t;

10

11 enum dsys_evtype {

12 DSYS_SINGLE,

13 DSYS_PERIODIC

14 };

15

16

17 struct dsys_demo *dsys_open(const char *fname);

18 struct dsys_demo *dsys_open_stream(FILE *fp);

19 void dsys_close(struct dsys_demo *demo);

20

21 void dsys_update(struct dsys_demo *demo, demotime_t tm);

22

23

24 void dsys_start(struct dsys_demo *demo);

25 void dsys_stop(struct dsys_demo *demo);

26 int dsys_is_running(struct dsys_demo *demo);

27

28

29 demotime_t dsys_duration(struct dsys_demo *demo);

30 demotime_t dsys_time(struct dsys_demo *demo);

31 float dsys_progress(struct dsys_demo *demo);

32

33 /* seek without continuity */

34 void dsys_seek(struct dsys_demo *demo, demotime_t tm);

35 void dsys_seek_norm(struct dsys_demo *demo, float t);

36

37 /* seek by accelerating time */

38 void dsys_warp(struct dsys_demo *demo, demotime_t tm);

39 void dsys_warp_norm(struct dsys_demo *demo, float t);

40

41

42 /* events */

43 struct dsys_event *dsys_event(struct dsys_demo *demo, const char *name);

44

45 enum dsys_evtype dsys_event_type(struct dsys_event *ev);

46 float dsys_event_value(struct dsys_event *ev);

47

48 void dsys_event_callback(struct dsys_event *ev, void (*func)(void*), void *cls);

49 void dsys_event_link(struct dsys_event *ev, float *link);

50

51 /* event evaluators */

52 float dsys_eval_step(struct dsys_event *ev, demotime_t t);

53 float dsys_eval_lerp(struct dsys_event *ev, demotime_t t);

54 float dsys_eval_sigmoid(struct dsys_event *ev, demotime_t t);

55

56 /* time conversion */

57 demotime_t dsys_sec_to_dtime(float sec);

58 demotime_t dsys_msec_to_dtime(unsigned long msec);

59 demotime_t dsys_norm_to_dtime(float t);

60

61 float dsys_dtime_to_sec(demotime_t tm);

62 unsigned long dsys_dtime_to_msec(demotime_t tm);

63 float dsys_dtime_to_norm(demotime_t tm);

64

65

66 #endif /* DSYS2_H_ */