/* Test program to check the resolution of the SDL timer on the current

   platform

*/

#include <stdlib.h>

#include <stdio.h>

#include "SDL.h"

#define DEFAULT_RESOLUTION	1

static int ticks = 0;

static Uint32 ticktock(Uint32 interval)

{

	++ticks;

	return(interval);

}

static Uint32 callback(Uint32 interval, void *param)

{

  printf("Timer %d : param = %d\n", interval, (int) param);

  return interval;

}

int main(int argc, char *argv[])

{

	int desired;

	SDL_TimerID t1, t2, t3;

	if ( SDL_Init(SDL_INIT_TIMER) < 0 ) {

		fprintf(stderr, "Couldn't load SDL: %s\n", SDL_GetError());

		exit(1);

	}

	atexit(SDL_Quit);

	/* Start the timer */

	desired = 0;

	if ( argv[1] ) {

		desired = atoi(argv[1]);

	}

	if ( desired == 0 ) {

		desired = DEFAULT_RESOLUTION;

	}

	SDL_SetTimer(desired, ticktock);

	/* Wait 10 seconds */

	printf("Waiting 10 seconds\n");

	SDL_Delay(10*1000);

	/* Stop the timer */

	SDL_SetTimer(0, NULL);

	/* Print the results */

	if ( ticks ) {

		fprintf(stderr,

		"Timer resolution: desired = %d ms, actual = %f ms\n",

					desired, (double)(10*1000)/ticks);

	}

	/* Test multiple timers */

	printf("Testing multiple timers...\n");

	t1 = SDL_AddTimer(100, callback, (void*)1);

	if(!t1)

	  fprintf(stderr,"Could not create timer 1\n");

	t2 = SDL_AddTimer(50, callback, (void*)2);

	if(!t2)

	  fprintf(stderr,"Could not create timer 2\n");

	t3 = SDL_AddTimer(233, callback, (void*)3);

	if(!t3)

	  fprintf(stderr,"Could not create timer 3\n");

	/* Wait 10 seconds */

	printf("Waiting 10 seconds\n");

	SDL_Delay(10*1000);

	printf("Removing timer 1 and waiting 5 more seconds\n");

	SDL_RemoveTimer(t1);

	SDL_Delay(5*1000);

	SDL_RemoveTimer(t2);

	SDL_RemoveTimer(t3);

	return(0);

}