evio.h

#ifndef EVIO_H
#define EVIO_H
 
#include <stdio.h>
#include <iostream>

// The following was originally defined in evio.cpp (seems like it
// should have been in the original evio.h, but was not).

#define  S_SUCCESS 0
#define  S_FAILURE -1

#define S_EVFILE      0x00730000      /* evfile.msg Event File I/O */
#define S_EVFILE_TRUNC        0x40730001      /* Event truncated on read */
#define S_EVFILE_BADBLOCK     0x40730002      /* Bad block number encountered */
#define S_EVFILE_BADHANDLE    0x80730001      /* Bad handle (file/stream not open) */
#define S_EVFILE_ALLOCFAIL    0x80730002      /* Failed to allocate event I/O structure */
#define S_EVFILE_BADFILE      0x80730003      /* File format error */
#define S_EVFILE_UNKOPTION    0x80730004      /* Unknown option specified */
#define S_EVFILE_UNXPTDEOF    0x80730005      /* Unexpected end of file while reading event */
#define S_EVFILE_BADSIZEREQ   0x80730006      /* Invalid buffer size request to evIoct */

#define EVBLOCKSIZE 8192*4
#define EV_READ 0
#define EV_WRITE 1
#define EV_VERSION 1
#define EV_MAGIC 0xc0da0100
#define EV_HDSIZ 8

#define EV_HD_BLKSIZ 0                /* size of block in longwords */
#define EV_HD_BLKNUM 1                /* number, starting at 0 */
#define EV_HD_HDSIZ  2                /* size of header in longwords (=8) */
#define EV_HD_START  3                /* first start of event in this block */
#define EV_HD_USED   4                /* number of words used in block (<= BLKSIZ) */
#define EV_HD_VER    5                /* version of file format (=1) */
#define EV_HD_RESVD  6                /* (reserved) */
#define EV_HD_MAGIC  7                /* magic number for error detection */

typedef struct evfilestruct {
  FILE *file;
  int *buf;
  int *next;
  int left;
  int blksiz;
  int blknum;
  int rw;
  int magic;
  int evnum;         /* last events with evnum so far */
  int byte_swapped;
} EVFILE;


extern int evOpen(char *filename, char *flags, long *handle);
extern int evRead(long handle, unsigned *buffer, int buflen);
extern int evGetNewBuffer(EVFILE *a);
extern int evWrite(long handle,unsigned *buffer);
extern int evFlush(EVFILE *a);
extern int evIoctl(long handle,char *request,void *argp);
extern int evClose(long handle);
extern int evOpenSearch(long handle, long *b_handle);
extern int evSearch(long handle, long b_handle, int evn, int *buffer, int buflen, int *size);
extern int evCloseSearch(long b_handle);


#endif