nese/src/sdl_timer.c

#include <time.h>

#include "time.h"

#include <SDL2/SDL.h>


void time_get(struct timespec* ts) {
    uint64_t time = SDL_GetTicks64();
    ts->tv_sec = time / 1000U;
    ts->tv_nsec = (time % 1000U) * 1000U * 1000U;
}

void time_sleep_until(const struct timespec* ts) {
    uint64_t t_target = (   (ts->tv_sec * 1000ULL) +
                            (ts->tv_nsec / (1000U * 1000U)));
    uint64_t t_now = SDL_GetTicks64();
    if (t_target > t_now) {
        SDL_Delay(t_target - t_now);
    }
}