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#ifndef SYNC_TRACK_H
#define SYNC_TRACK_H
#include <string.h>
#include <stdlib.h>
#include "base.h"
enum key_type {
KEY_STEP, /* stay constant */
KEY_LINEAR, /* lerp to the next value */
KEY_SMOOTH, /* smooth curve to the next value */
KEY_RAMP,
KEY_TYPE_COUNT
};
struct track_key {
int row;
float value;
enum key_type type;
};
struct sync_track {
char *name;
struct track_key *keys;
int num_keys;
};
int sync_find_key(const struct sync_track *, int);
static inline int key_idx_floor(const struct sync_track *t, int row)
{
int idx = sync_find_key(t, row);
if (idx < 0)
idx = -idx - 2;
return idx;
}
#ifndef SYNC_PLAYER
int sync_set_key(struct sync_track *, const struct track_key *);
int sync_del_key(struct sync_track *, int);
static inline int is_key_frame(const struct sync_track *t, int row)
{
return sync_find_key(t, row) >= 0;
}
#endif /* !defined(SYNC_PLAYER) */
#endif /* SYNC_TRACK_H */
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