track.h

#ifndef SYNC_TRACK_H
#define SYNC_TRACK_H
 
#ifdef __cplusplus
    extern "C" {
#endif
 
#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 {
    const char *name;
    struct track_key *keys;
    int num_keys;
};
 
// CPP write
void start_save_sync ( const char* filename_h, const char* filename_cpp );
void save_sync(const struct sync_track *t, const char *filename_h, const char* filename_cpp);
void end_save_sync( const char* filename_h, const char* filename_cpp );
 
// JSON write
void start_save_sync_json ( const char* filename);
void save_sync_json(const struct sync_track *t, const char *filename);
void end_save_sync_json( const char* filename);
 
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) */
 
#ifdef __cplusplus
    }
#endif
 
#endif /* SYNC_TRACK_H */