cd.c

#include "cd.h"

//---- Conversion functions --------------------------------------------------
unsigned
Time2Frame (int min, int sec, int frame)
{
  return (unsigned)(min * 60 * 75 + sec * 75 + frame);
}

unsigned
Time2HSG (int min, int sec, int frame)
{
  return Time2Frame (min, sec, frame) - 150;
}

unsigned
Time2Redbook (int min, int sec, int frame)
{
  return (unsigned)((min << 16) | (sec << 8) | (frame));
}

void
Frame2Time (unsigned frame, int *Min, int *Sec, int *Fra)
{
  *Min = (int)(frame / (60 * 75));
  frame -= *Min * 60 * 75;
  *Sec = (int)(frame / 75);
  frame -= *Sec * 75;
  *Fra = (int)frame;
}

void
Redbook2Time (unsigned redbook, int *Min, int *Sec, int *Fra)
{
  *Fra = (int)(redbook & 0xff);
  *Sec = (int)((redbook >> 8) & 0xff);
  *Min = (int)((redbook >> 16) & 0xff);
}

void
HSG2Time (unsigned hsg, int *Min, int *Sec, int *Fra)
{
  Frame2Time (hsg + 150, Min, Sec, Fra);
}

unsigned
Redbook2HSG (unsigned redbook)
{
  int Min, Sec, Fra;
  Redbook2Time (redbook, &Min, &Sec, &Fra);
  return Time2HSG (Min, Sec, Fra);
}

unsigned
HSG2Redbook (unsigned HSG)
{
  int Min, Sec, Fra;
  HSG2Time (HSG, &Min, &Sec, &Fra);
  return Time2Redbook (Min, Sec, Fra);
}