types.h

Yet Another MP3 Player source code. It can be usefull as reference source for any project.

/*
  Copyright (C) 2001 Jesper Hansen <[e-mail]>.

  Rewritten by:	Nikolai Vorontsov <[e-mail]>

  This file is part of the yampp system.

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software Foundation, 
  Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#ifndef __TYPES_H__
#define __TYPES_H__

#include <ctype.h>

#define MAX_U16  65535
#define MAX_S16  32767

#define DDR(x) ((x)-1)    /* address of data direction register of port x */
#define PIN(x) ((x)-2)    /* address of input register of port x */


typedef unsigned char	BYTE;
typedef unsigned int	WORD;
typedef unsigned long	DWORD;

typedef unsigned short	USHORT;
typedef unsigned char	BOOL;

typedef unsigned char	UCHAR;
typedef unsigned int	UINT;
typedef unsigned long	ULONG;

typedef char	CHAR;
typedef int		INT;
typedef long	LONG;

// alternative types

typedef unsigned char  u08;
typedef unsigned short u16;
typedef unsigned long  u32;

typedef char  s08;
typedef short s16;
typedef long  s32;

typedef u08 bool;
#define true 1
#define false 0

#ifndef NULL
#define NULL	0
#endif


// Make an unsigned copy of div function
typedef struct {
	unsigned quot;
	unsigned rem;
} udiv_t;
extern udiv_t udiv(unsigned, unsigned) __asm__("__udivmodhi4") __ATTR_CONST__;

// This structures are used to simplify code, compiler doesn't optimize 
// well shifts
struct u16bytes
{
	u08 low, high;
};

union u16convert
{
	u16 value;
	struct u16bytes bytes;
};

struct u32bytes
{
	u08 byte1, byte2, byte3, byte4;
};

struct u32words
{
	u16 low, high;
};

union u32convert 
{
	u32 value;
	struct u32bytes bytes;
	struct u32words words;
};

#endif