17 lines
565 B
C
17 lines
565 B
C
|
#include "tick.h"
|
||
|
|
|
||
|
|
#include <SDL2/SDL_timer.h>
|
||
|
|
|
||
|
|
sc_tick
|
||
|
|
sc_tick_now(void) {
|
||
|
|
// SDL_GetTicks() resolution is in milliseconds, but sc_tick are expressed
|
||
|
|
// in microseconds to store PTS without precision loss.
|
||
|
|
//
|
||
|
|
// As an alternative, SDL_GetPerformanceCounter() and
|
||
|
|
// SDL_GetPerformanceFrequency() could be used, but:
|
||
|
|
// - the conversions (avoiding overflow) are expansive, since the
|
||
|
|
// frequency is not known at compile time;
|
||
|
|
// - in practice, we don't need more precision for now.
|
||
|
|
return (sc_tick) SDL_GetTicks() * 1000;
|
||
|
|
}
|