home *** CD-ROM | disk | FTP | other *** search
- /* FILE.H
- *
- * High-level 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 __FILE_H
- #define __FILE_H
-
- #include "rawfile.h"
-
-
- /****************************************************************************\
- * struct fileFile
- * ---------------
- * Description: File state structure
- \****************************************************************************/
-
- typedef struct
- {
- rfHandle rf;
- } fileFile;
-
-
-
-
- /****************************************************************************\
- * typedef fileHandle
- * ------------------
- * Description: High-level file I/O file handle
- \****************************************************************************/
-
- typedef fileFile* fileHandle;
-
-
-
- /****************************************************************************\
- * enum fileOpenMode
- * -----------------
- * Description: File opening mode. Used by fileOpen()
- \****************************************************************************/
-
- enum fileOpenMode
- {
- fileOpenRead = 1, /* open file for reading */
- fileOpenWrite = 2, /* open file for writing */
- fileOpenReadWrite = 3 /* open file for both reading and
- writing */
- };
-
-
-
- /****************************************************************************\
- * enum fileSeekMode
- * -----------------
- * Description: File seeking mode. Used by fileSeek()
- \****************************************************************************/
-
- enum fileSeekMode
- {
- fileSeekAbsolute = 1, /* seek to an absolute position from
- the beginning of the file */
- fileSeekRelative = 2, /* seek to a position relative to
- current position */
- fileSeekEnd = 3 /* seek relative to the end of file */
- };
-
-
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
-
- /****************************************************************************\
- *
- * Function: int fileOpen(char *fileName, int openMode, fileHandle *file);
- *
- * Description: Opens a file for reading or writing
- *
- * Input: char *fileName name of file
- * int openMode file opening mode, see enum rfOpenMode
- * fileHandle *file pointer to file handle
- *
- * Returns: MIDAS error code.
- * File handle is stored in *file.
- *
- \****************************************************************************/
-
- int CALLING fileOpen(char *fileName, int openMode, fileHandle *file);
-
-
-
-
- /****************************************************************************\
- *
- * Function: int fileClose(fileHandle file);
- *
- * Description: Closes a file opened with fileOpen().
- *
- * Input: fileHandle file handle of an open file
- *
- * Returns: MIDAS error code
- *
- \****************************************************************************/
-
- int CALLING fileClose(fileHandle file);
-
-
-
-
- /****************************************************************************\
- *
- * Function: int fileGetSize(fileHandle file, long *fileSize);
- *
- * Description: Get the size of a file
- *
- * Input: fileHandle file handle of an open file
- * ulong *fileSize pointer to file size
- *
- * Returns: MIDAS error code.
- * File size is stored in *fileSize.
- *
- \****************************************************************************/
-
- int CALLING fileGetSize(fileHandle file, long *fileSize);
-
-
-
-
- /****************************************************************************\
- *
- * Function: int fileRead(fileHandle file, void *buffer, ulong numBytes);
- *
- * Description: Reads binary data from a file
- *
- * Input: fileHandle 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 fileRead(fileHandle file, void *buffer, ulong numBytes);
-
-
-
-
- /****************************************************************************\
- *
- * Function: int fileWrite(fileHandle file, void *buffer, ulong numBytes);
- *
- * Description: Writes binary data to a file
- *
- * Input: fileHandle file file handle
- * void *buffer pointer to data to be written
- * ulong numBytes number of bytes to write
- *
- * Returns: MIDAS error code
- *
- \****************************************************************************/
-
- int CALLING fileWrite(fileHandle file, void *buffer, ulong numBytes);
-
-
-
-
- /****************************************************************************\
- *
- * Function: int fileSeek(fileHandle file, long newPosition, int seekMode);
- *
- * Description: Seeks to a new position in file. Subsequent reads and writes
- * go to the new position.
- *
- * Input: fileHandle file file handle
- * long newPosition new file position
- * int seekMode file seek mode, see enum rfSeekMode
- *
- * Returns: MIDAS error code
- *
- \****************************************************************************/
-
- int CALLING fileSeek(fileHandle file, long newPosition, int seekMode);
-
-
-
-
- /****************************************************************************\
- *
- * Function: int fileGetPosition(fileHandle file, long *position);
- *
- * Description: Reads the current position in a file
- *
- * Input: fileHandle file file handle
- * long *position pointer to file position
- *
- * Returns: MIDAS error code.
- * Current file position is stored in *position.
- *
- \****************************************************************************/
-
- int CALLING fileGetPosition(fileHandle file, long *position);
-
-
-
- #ifdef __cplusplus
- }
- #endif
-
-
-
- /****************************************************************************\
- * enum fileFunctIDs
- * -----------------
- * Description: ID numbers for high-level file I/O functions
- \****************************************************************************/
-
- enum fileFunctIDs
- {
- ID_fileOpen = ID_file,
- ID_fileClose,
- ID_fileGetSize,
- ID_fileRead,
- ID_fileWrite,
- ID_fileSeek,
- ID_fileGetPosition
- };
-
- #endif
-