ec871dd3f5
This avoids to use the SDL timer API directly, and will allow to handle generic ticks (possibly negative).
60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
#ifndef FPSCOUNTER_H
|
|
#define FPSCOUNTER_H
|
|
|
|
#include "common.h"
|
|
|
|
#include <stdatomic.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#include "util/thread.h"
|
|
|
|
struct fps_counter {
|
|
sc_thread thread;
|
|
sc_mutex mutex;
|
|
sc_cond state_cond;
|
|
|
|
bool thread_started;
|
|
|
|
// atomic so that we can check without locking the mutex
|
|
// if the FPS counter is disabled, we don't want to lock unnecessarily
|
|
atomic_bool started;
|
|
|
|
// the following fields are protected by the mutex
|
|
bool interrupted;
|
|
unsigned nr_rendered;
|
|
unsigned nr_skipped;
|
|
sc_tick next_timestamp;
|
|
};
|
|
|
|
bool
|
|
fps_counter_init(struct fps_counter *counter);
|
|
|
|
void
|
|
fps_counter_destroy(struct fps_counter *counter);
|
|
|
|
bool
|
|
fps_counter_start(struct fps_counter *counter);
|
|
|
|
void
|
|
fps_counter_stop(struct fps_counter *counter);
|
|
|
|
bool
|
|
fps_counter_is_started(struct fps_counter *counter);
|
|
|
|
// request to stop the thread (on quit)
|
|
// must be called before fps_counter_join()
|
|
void
|
|
fps_counter_interrupt(struct fps_counter *counter);
|
|
|
|
void
|
|
fps_counter_join(struct fps_counter *counter);
|
|
|
|
void
|
|
fps_counter_add_rendered_frame(struct fps_counter *counter);
|
|
|
|
void
|
|
fps_counter_add_skipped_frame(struct fps_counter *counter);
|
|
|
|
#endif
|