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/*
* FILE: sndfile.h
* PROGRAM: RAT
* AUTHOR: Orion Hodson
*
* Copyright (c) 1998-2001 University College London
* All rights reserved.
*
* $Id: sndfile.h,v 1.17 2001/01/08 20:30:09 ucaccsp Exp $
*/
#ifndef __SND_FILE_H
#define __SND_FILE_H
#ifdef __cplusplus
extern "C" {
#endif
/* The interface below allows access to Sun .au files and MS .wav files.
*
* The decision about which format is used depends on the extension of
* the file name.
*
* The functions snd_{read,write}_open take a pointer to a pointer
* of type struct s_sndfile. This makes allocation/access more
* restrictive, but safer.
*
* NOTE: for snd_read_audio and snd_write_audio, buf_len is the
* product of the number of sampling intervals to be written and
* the number of channels.
*/
#include "sndfile_types.h"
struct s_sndfile;
int snd_read_open (struct s_sndfile **sf,
char *path,
sndfile_fmt_t *fmt); /* fmt only used for conversion to l16 if file type is raw, maybe NULL */
int snd_read_close (struct s_sndfile **sf);
int snd_read_audio (struct s_sndfile **sf,
sample *buf, /* buffer */
uint16_t buf_len); /* sampling_intervals * channels */
int snd_write_open (struct s_sndfile **sf,
char *path,
char *default_extension, /* "au", or "wav", fallback if not specified */
const sndfile_fmt_t *fmt);
int snd_write_close (struct s_sndfile **sf);
int snd_write_audio (struct s_sndfile **sf,
sample *buf,
uint16_t buf_len);
int snd_pause (struct s_sndfile *sf);
int snd_resume (struct s_sndfile *sf);
int snd_get_format(struct s_sndfile *sf, sndfile_fmt_t *fmt);
int snd_valid_format(sndfile_fmt_t *fmt);
#ifdef __cplusplus
}
#endif
#endif /* __SND_FILE_H */
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