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 #ifdef __cplusplus

17 extern "C" {

18 #endif

19

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

21 struct dsys_demo *dsys_open_stream(FILE *fp);

22 void dsys_close(struct dsys_demo *demo);

23

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

25

26

27 void dsys_start(struct dsys_demo *demo);

28 void dsys_stop(struct dsys_demo *demo);

29 int dsys_is_running(struct dsys_demo *demo);

30

31

32 demotime_t dsys_duration(struct dsys_demo *demo);

33 demotime_t dsys_time(struct dsys_demo *demo);

34 float dsys_progress(struct dsys_demo *demo);

35

36 /* seek without continuity */

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

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

39

40 /* seek by accelerating time */

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

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

43

44

45 /* events */

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

47

48 enum dsys_evtype dsys_event_type(struct dsys_event *ev);

49 float dsys_event_value(struct dsys_event *ev);

50

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

52 int dsys_event_link(struct dsys_event *ev, float *link);

53

54 /* event evaluators */

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

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

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

58

59 /* time conversion */

60 demotime_t dsys_sec_to_dtime(float sec);

61 demotime_t dsys_msec_to_dtime(unsigned long msec);

62

63 float dsys_dtime_to_sec(demotime_t tm);

64 unsigned long dsys_dtime_to_msec(demotime_t tm);

65

66 #ifdef __cplusplus

67 }

68 #endif

69

70

71 #endif /* DSYS2_H_ */