;/*
sc resopt link optimize debug=line idir=include: nostackcheck opt data=far getmodeidrate.c
quit
*/

/*
** Example on getting display modeid vert & horiz refresh rates
**
** Written by Harry "Piru" Sintonen <sintonen@iki.fi>
** Public Domain.
**
*/

#include <graphics/gfx.h>
#include <graphics/displayinfo.h>

#include <proto/dos.h>
#include <proto/graphics.h>

#include <stdlib.h>
#include <stddef.h>


int main(int argc, char **argv)
{
  struct MonitorInfo moninfo;
  ULONG modeid;

  if (argc != 2)
  {
    Printf("Usage: %s modeid\n", argv[0]);

    return RETURN_WARN;
  }

  modeid = strtoul(argv[1], NULL, 0);

  if (GetDisplayInfoData(NULL, (UBYTE *) &moninfo, sizeof(struct MonitorInfo),
                         DTAG_MNTR, modeid)
      >= offsetof(struct MonitorInfo, MinRow))
  {
    ULONG vfreq = 1000000000UL / ((ULONG) moninfo.TotalColorClocks * 280 *
                                  moninfo.TotalRows / 1000) + 5;
    ULONG vfreqk = vfreq / 1000;
    ULONG hfreq = 1000000000UL / ((ULONG) moninfo.TotalColorClocks * 280) + 5;
    ULONG hfreqk = hfreq / 1000;

    Printf("Scanrate: %lu.%02lu Hz\n", vfreqk, (vfreq - vfreqk * 1000) / 10);
    Printf("Scanline: %lu.%02lu kHz\n", hfreqk, (hfreq - hfreqk * 1000) / 10);

    return RETURN_OK;
  }
  else
    Printf("GetDisplayInfoData DTAG_MNTR failed!\n");

  return RETURN_ERROR;
}