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/* $OpenBSD: file.h,v 1.3 2008/08/14 09:58:55 ratchov Exp $ */
/*
* Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef FILE_H
#define FILE_H
#include <sys/queue.h>
#include <sys/types.h>
#include <poll.h>
#include "aparams.h"
struct aparams;
struct aproc;
struct abuf;
struct file {
int fd; /* file descriptor */
struct pollfd *pfd; /* arg to poll(2) syscall */
off_t rbytes; /* bytes to read, -1 if no limit */
off_t wbytes; /* bytes to write, -1 if no limit */
int events; /* events for poll(2) */
#define FILE_ROK 0x1 /* file readable */
#define FILE_WOK 0x2 /* file writable */
#define FILE_EOF 0x4 /* eof on the read end */
#define FILE_HUP 0x8 /* eof on the write end */
int state; /* one of above */
char *name; /* for debug purposes */
struct aproc *rproc, *wproc; /* reader and/or writer */
LIST_ENTRY(file) entry;
/*
* disk-file specific stuff
*/
#define HDR_AUTO 0 /* guess by looking at the file name */
#define HDR_RAW 1 /* no headers, ie openbsd native ;-) */
#define HDR_WAV 2 /* microsoft riff wave */
unsigned hdr; /* HDR_RAW or HDR_WAV */
struct aparams hpar; /* parameters to write on the header */
};
LIST_HEAD(filelist,file);
extern struct filelist file_list;
void file_start(void);
void file_stop(void);
struct file *file_new(int, char *);
void file_del(struct file *);
void file_attach(struct file *, struct aproc *, struct aproc *);
unsigned file_read(struct file *, unsigned char *, unsigned);
unsigned file_write(struct file *, unsigned char *, unsigned);
int file_poll(void);
void file_eof(struct file *);
void file_hup(struct file *);
/*
* max data of a .wav file. The total file size must be smaller than
* 2^31, and we also have to leave some space for the headers (around 40
* bytes)
*/
#define WAV_DATAMAX (0x7fff0000)
int wav_readhdr(int, struct aparams *, off_t *);
int wav_writehdr(int, struct aparams *);
/* legacy */
int legacy_play(char *, char *);
#endif /* !defined(FILE_H) */
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