portableio.h
资源名称:mpeg.zip [点击查看]
上传用户:njqiyou
上传日期:2007-01-08
资源大小:574k
文件大小:4k
源码类别:
mpeg/mp3
开发平台:
C/C++
- #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 <stdio.h>
- #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);
- #define Read32BitsLowHigh(f) Read32Bits(f)
- #define WriteString(f,s) fwrite(s,strlen(s),sizeof(char),f)
- #endif