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RAWFILE.H
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C/C++ Source or Header
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1994-08-06
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7KB
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245 lines
/* RAWFILE.H
*
* Raw file I/O for MIDAS Sound System
*
* Copyright 1994 Petteri Kangaslampi and Jarno Paananen
*
* This file is part of the MIDAS Sound System, and may only be
* used, modified and distributed under the terms of the MIDAS
* Sound System license, LICENSE.TXT. By continuing to use,
* modify or distribute this file you indicate that you have
* read the license and understand and accept it fully.
*/
#ifndef __RAWFILE_H
#define __RAWFILE_H
#ifndef FILE
#include <stdio.h>
#endif
/****************************************************************************\
* struct rfFile
* -------------
* Description: File state structure
\****************************************************************************/
typedef struct
{
FILE *f;
} rfFile;
/****************************************************************************\
* typedef rfHandle;
* -----------------
* Description: Raw file I/O file handle
\****************************************************************************/
typedef rfFile* rfHandle;
/****************************************************************************\
* enum rfOpenMode
* ---------------
* Description: File opening mode. Used by rfOpen()
\****************************************************************************/
enum rfOpenMode
{
rfOpenRead = 1, /* open file for reading */
rfOpenWrite = 2, /* open file for writing */
rfOpenReadWrite = 3 /* open file for both reading and
writing */
};
/****************************************************************************\
* enum rfSeekMode
* ---------------
* Description: File seeking mode. Used by rfSeek()
\****************************************************************************/
enum rfSeekMode
{
rfSeekAbsolute = 1, /* seek to an absolute position from
the beginning of the file */
rfSeekRelative = 2, /* seek to a position relative to
current position */
rfSeekEnd = 3 /* relative to the end of file */
};
#ifdef __cplusplus
extern "C" {
#endif
/****************************************************************************\
*
* Function: int rfOpen(char *fileName, int openMode, rfHandle *file);
*
* Description: Opens a file for reading or writing
*
* Input: char *fileName name of file
* int openMode file opening mode, see enum rfOpenMode
* rfHandle *file pointer to file handle
*
* Returns: MIDAS error code.
* File handle is stored in *file.
*
\****************************************************************************/
int CALLING rfOpen(char *fileName, int openMode, rfHandle *file);
/****************************************************************************\
*
* Function: int rfClose(rfHandle file);
*
* Description: Closes a file opened with rfOpen().
*
* Input: rfHandle file handle of an open file
*
* Returns: MIDAS error code
*
\****************************************************************************/
int CALLING rfClose(rfHandle file);
/****************************************************************************\
*
* Function: int rfGetSize(rfHandle file, long *fileSize);
*
* Description: Get the size of a file
*
* Input: rfHandle file handle of an open file
* ulong *fileSize pointer to file size
*
* Returns: MIDAS error code.
* File size is stored in *fileSize.
*
\****************************************************************************/
int CALLING rfGetSize(rfHandle file, long *fileSize);
/****************************************************************************\
*
* Function: int rfRead(rfHandle file, void *buffer, ulong numBytes);
*
* Description: Reads binary data from a file
*
* Input: rfHandle file file handle
* void *buffer reading buffer
* ulong numBytes number of bytes to read
*
* Returns: MIDAS error code.
* Read data is stored in *buffer, which must be large enough
* for it.
*
\****************************************************************************/
int CALLING rfRead(rfHandle file, void *buffer, ulong numBytes);
/****************************************************************************\
*
* Function: int rfWrite(rfHandle file, void *buffer, ulong numBytes);
*
* Description: Writes binary data to a file
*
* Input: rfHandle file file handle
* void *buffer pointer to data to be written
* ulong numBytes number of bytes to write
*
* Returns: MIDAS error code
*
\****************************************************************************/
int CALLING rfWrite(rfHandle file, void *buffer, ulong numBytes);
/****************************************************************************\
*
* Function: int rfSeek(rfHandle file, long newPosition, int seekMode);
*
* Description: Seeks to a new position in file. Subsequent reads and writes
* go to the new position.
*
* Input: rfHandle file file handle
* long newPosition new file position
* int seekMode file seek mode, see enum rfSeekMode
*
* Returns: MIDAS error code
*
\****************************************************************************/
int CALLING rfSeek(rfHandle file, long newPosition, int seekMode);
/****************************************************************************\
*
* Function: int rfGetPosition(rfHandle file, long *position);
*
* Description: Reads the current position in a file
*
* Input: rfHandle file file handle
* long *position pointer to file position
*
* Returns: MIDAS error code.
* Current file position is stored in *position.
*
\****************************************************************************/
int CALLING rfGetPosition(rfHandle file, long *position);
#ifdef __cplusplus
}
#endif
/****************************************************************************\
* enum rfFunctIDs
* ---------------
* Description: ID numbers for raw file I/O functions
\****************************************************************************/
enum rfFunctIDs
{
ID_rfOpen = ID_rf,
ID_rfClose,
ID_rfGetSize,
ID_rfRead,
ID_rfWrite,
ID_rfSeek,
ID_rfGetPosition
};
#endif