www.pudn.com > shine.zip > portableio.h

//    Shine is an MP3 encoder 
//    Copyright (C) 1999-2000  Gabriel Bouvigne 
// 
//    This library is free software; you can redistribute it and/or 
//    modify it under the terms of the GNU Library General Public 
//    License as published by the Free Software Foundation; either 
//    version 2 of the License, or (at your option) any later version. 
// 
//    This library 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 
//    Library General Public License for more details. 
 
 
#ifndef PORTABLEIO_H__ 
#define PORTABLEIO_H__ 
/* Copyright (C) 1988-1991 Apple Computer, Inc. 
 * All Rights Reserved. 
 * 
 * Warranty Information 
 * Even though Apple has reviewed this software, Apple makes no warranty 
 * or representation, either express or implied, with respect to this 
 * software, its quality, accuracy, merchantability, or fitness for a  
 * particular purpose.  As a result, this software is provided "as is," 
 * and you, its user, are assuming the entire risk as to its quality 
 * and accuracy. 
 * 
 * This code may be used and freely distributed as long as it includes 
 * this copyright notice and the warranty information. 
 * 
 * Machine-independent I/O routines for 8-, 16-, 24-, and 32-bit integers. 
 * 
 * Motorola processors (Macintosh, Sun, Sparc, MIPS, etc) 
 * pack bytes from high to low (they are big-endian). 
 * Use the HighLow routines to match the native format 
 * of these machines. 
 * 
 * Intel-like machines (PCs, Sequent) 
 * pack bytes from low to high (the are little-endian). 
 * Use the LowHigh routines to match the native format 
 * of these machines. 
 * 
 * These routines have been tested on the following machines: 
 *	Apple Macintosh, MPW 3.1 C compiler 
 *	Apple Macintosh, THINK C compiler 
 *	Silicon Graphics IRIS, MIPS compiler 
 *	Cray X/MP and Y/MP 
 *	Digital Equipment VAX 
 * 
 * 
 * Implemented by Malcolm Slaney and Ken Turkowski. 
 * 
 * Malcolm Slaney contributions during 1988-1990 include big- and little- 
 * endian file I/O, conversion to and from Motorola's extended 80-bit 
 * floating-point format, and conversions to and from IEEE single- 
 * precision floating-point format. 
 * 
 * In 1991, Ken Turkowski implemented the conversions to and from 
 * IEEE double-precision format, added more precision to the extended 
 * conversions, and accommodated conversions involving +/- infinity, 
 * NaN's, and denormalized numbers. 
 * 
 * $Id: portableio.h,v 2.6 1991/04/30 17:06:02 malcolm Exp $ 
 * 
 * $Log: portableio.h,v $ 
 * Revision 2.6  91/04/30  17:06:02  malcolm 
 */ 
 
#include	 
#include	"ieeefloat.h" 
 
#ifndef	__cplusplus 
# define	CLINK	 
#else 
# define	CLINK "C" 
#endif 
 
extern CLINK int ReadByte(FILE *fp); 
extern CLINK int Read16BitsLowHigh(FILE *fp); 
extern CLINK int Read16BitsHighLow(FILE *fp); 
extern CLINK void Write8Bits(FILE *fp, int i); 
extern CLINK void Write16BitsLowHigh(FILE *fp, int i); 
extern CLINK void Write16BitsHighLow(FILE *fp, int i); 
extern CLINK int Read24BitsHighLow(FILE *fp); 
extern CLINK int Read32Bits(FILE *fp); 
extern CLINK int Read32BitsHighLow(FILE *fp); 
extern CLINK void Write32Bits(FILE *fp, int i); 
extern CLINK void Write32BitsLowHigh(FILE *fp, int i); 
extern CLINK void Write32BitsHighLow(FILE *fp, int i); 
extern CLINK void ReadBytes(FILE *fp, char *p, int n); 
extern CLINK void ReadBytesSwapped(FILE *fp, char *p, int n); 
extern CLINK void WriteBytes(FILE *fp, char *p, int n); 
extern CLINK void WriteBytesSwapped(FILE *fp, char *p, int n); 
extern CLINK defdouble ReadIeeeFloatHighLow(FILE *fp); 
extern CLINK defdouble ReadIeeeFloatLowHigh(FILE *fp); 
extern CLINK defdouble ReadIeeeDoubleHighLow(FILE *fp); 
extern CLINK defdouble ReadIeeeDoubleLowHigh(FILE *fp); 
extern CLINK defdouble ReadIeeeExtendedHighLow(FILE *fp); 
extern CLINK defdouble ReadIeeeExtendedLowHigh(FILE *fp); 
extern CLINK void WriteIeeeFloatLowHigh(FILE *fp, defdouble num); 
extern CLINK void WriteIeeeFloatHighLow(FILE *fp, defdouble num); 
extern CLINK void WriteIeeeDoubleLowHigh(FILE *fp, defdouble num); 
extern CLINK void WriteIeeeDoubleHighLow(FILE *fp, defdouble num); 
extern CLINK void WriteIeeeExtendedLowHigh(FILE *fp, defdouble num); 
extern CLINK void WriteIeeeExtendedHighLow(FILE *fp, defdouble num); 
 
enum e_byte_order {order_unknown,order_bigEndian,order_littleEndian}; 
enum e_byte_order DetermineByteOrder(); 
void SwapBytesInWords(short *loc,int words); 
 
 
#define	Read32BitsLowHigh(f)	Read32Bits(f) 
#define WriteString(f,s)	fwrite(s,strlen(s),sizeof(char),f) 
#endif