mirror of https://github.com/ericonr/sndio.git
56 lines
2.2 KiB
C
56 lines
2.2 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef AFILE_H
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#define AFILE_H
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#include <sys/types.h>
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#include "dsp.h"
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struct afile {
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struct aparams par; /* file params */
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#define AFILE_FMT_PCM 0 /* integers (fixed point) */
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#define AFILE_FMT_ULAW 1 /* 8-bit mu-law */
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#define AFILE_FMT_ALAW 2 /* 8-bit a-law */
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#define AFILE_FMT_FLOAT 3 /* IEEE 754 32-bit floats */
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int fmt; /* one of above */
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int rate; /* file sample rate */
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int nch; /* file channel count */
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#define AFILE_HDR_AUTO 0 /* guess from file name */
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#define AFILE_HDR_RAW 1 /* headerless aka "raw" file */
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#define AFILE_HDR_WAV 2 /* microsoft .wav */
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#define AFILE_HDR_AIFF 3 /* apple .aiff */
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#define AFILE_HDR_AU 4 /* sun/next .au */
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int hdr; /* header type */
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int fd; /* file descriptor */
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#define AFILE_FREAD 1 /* open for reading */
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#define AFILE_FWRITE 2 /* open for writing */
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int flags; /* bitmap of above */
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off_t curpos; /* read/write position (bytes) */
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off_t startpos; /* where payload starts */
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off_t endpos; /* where payload ends */
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off_t maxpos; /* max allowed pos (.wav limitation) */
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char *path; /* file name (debug only) */
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};
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int afile_open(struct afile *, char *, int, int, struct aparams *, int, int);
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size_t afile_read(struct afile *, void *, size_t);
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size_t afile_write(struct afile *, void *, size_t);
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int afile_seek(struct afile *, off_t);
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void afile_close(struct afile *);
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#endif /* !defined(AFILE_H) */
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