nuclear@12: /*
nuclear@12: New demosystem by Nuclear / Mindlapse
nuclear@12: Copyright (C) 2011-2013  John Tsiombikas <nuclear@member.fsf.org>
nuclear@12: 
nuclear@12: This program is free software: you can redistribute it and/or modify
nuclear@12: it under the terms of the GNU General Public License as published by
nuclear@12: the Free Software Foundation, either version 3 of the License, or
nuclear@12: (at your option) any later version.
nuclear@12: 
nuclear@12: This program is distributed in the hope that it will be useful,
nuclear@12: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@12: GNU General Public License for more details.
nuclear@12: 
nuclear@12: You should have received a copy of the GNU General Public License
nuclear@12: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@12: */
nuclear@9: #ifndef DSYS2_H_
nuclear@9: #define DSYS2_H_
nuclear@9: 
nuclear@9: #include <stdio.h>
nuclear@9: 
nuclear@9: struct dsys_demo;
nuclear@9: struct dsys_event;
nuclear@9: 
nuclear@9: typedef float demotime_t;
nuclear@9: 
nuclear@9: enum dsys_evtype {
nuclear@9: 	DSYS_SINGLE,
nuclear@9: 	DSYS_PERIODIC
nuclear@9: };
nuclear@9: 
nuclear@9: #ifdef __cplusplus
nuclear@9: extern "C" {
nuclear@9: #endif
nuclear@9: 
nuclear@9: struct dsys_demo *dsys_open(const char *fname);
nuclear@9: struct dsys_demo *dsys_open_stream(FILE *fp);
nuclear@9: void dsys_close(struct dsys_demo *demo);
nuclear@9: 
nuclear@9: void dsys_update(struct dsys_demo *demo, demotime_t tm);
nuclear@9: 
nuclear@9: 
nuclear@9: void dsys_start(struct dsys_demo *demo);
nuclear@9: void dsys_stop(struct dsys_demo *demo);
nuclear@9: int dsys_is_running(struct dsys_demo *demo);
nuclear@9: 
nuclear@9: 
nuclear@9: demotime_t dsys_duration(struct dsys_demo *demo);
nuclear@9: demotime_t dsys_time(struct dsys_demo *demo);
nuclear@9: float dsys_progress(struct dsys_demo *demo);
nuclear@9: 
nuclear@9: /* seek without continuity */
nuclear@9: void dsys_seek(struct dsys_demo *demo, demotime_t tm);
nuclear@9: void dsys_seek_norm(struct dsys_demo *demo, float t);
nuclear@9: 
nuclear@9: /* seek by accelerating time */
nuclear@9: void dsys_warp(struct dsys_demo *demo, demotime_t tm);
nuclear@9: void dsys_warp_norm(struct dsys_demo *demo, float t);
nuclear@9: 
nuclear@9: 
nuclear@9: /* events */
nuclear@9: struct dsys_event *dsys_event(struct dsys_demo *demo, const char *name);
nuclear@9: 
nuclear@11: void dsys_set_event_eval(struct dsys_event *ev, float (*eval)(struct dsys_event*, demotime_t));
nuclear@11: 
nuclear@9: enum dsys_evtype dsys_event_type(struct dsys_event *ev);
nuclear@9: float dsys_event_value(struct dsys_event *ev);
nuclear@9: 
nuclear@9: int dsys_event_callback(struct dsys_event *ev, void (*func)(struct dsys_event*, void*), void *cls);
nuclear@9: int dsys_event_link(struct dsys_event *ev, float *link);
nuclear@9: 
nuclear@9: /* event evaluators */
nuclear@9: float dsys_eval_step(struct dsys_event *ev, demotime_t t);
nuclear@9: float dsys_eval_lerp(struct dsys_event *ev, demotime_t t);
nuclear@9: float dsys_eval_sigmoid(struct dsys_event *ev, demotime_t t);
nuclear@9: 
nuclear@9: /* time conversion */
nuclear@9: demotime_t dsys_sec_to_dtime(float sec);
nuclear@9: demotime_t dsys_msec_to_dtime(unsigned long msec);
nuclear@9: 
nuclear@9: float dsys_dtime_to_sec(demotime_t tm);
nuclear@9: unsigned long dsys_dtime_to_msec(demotime_t tm);
nuclear@9: 
nuclear@9: #ifdef __cplusplus
nuclear@9: }
nuclear@9: #endif
nuclear@9: 
nuclear@9: 
nuclear@9: #endif	/* DSYS2_H_ */