mirror of https://github.com/ericonr/sndio.git
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/* $OpenBSD: dev.h,v 1.27 2010/07/06 01:12:45 ratchov Exp $ */
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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 DEV_H
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#define DEV_H
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#include "aparams.h"
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struct aproc;
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struct abuf;
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struct dev {
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struct dev *next;
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/*
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* desired parameters
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*/
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unsigned reqmode; /* mode */
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struct aparams reqipar, reqopar; /* parameters */
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unsigned reqbufsz; /* buffer size */
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unsigned reqround; /* block size */
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unsigned reqrate; /* sample rate */
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unsigned hold; /* hold the device open ? */
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unsigned refcnt; /* number of openers */
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#define DEV_CLOSED 0 /* closed */
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#define DEV_INIT 1 /* stopped */
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#define DEV_START 2 /* ready to start */
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#define DEV_RUN 3 /* started */
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unsigned pstate; /* on of DEV_xxx */
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char *path; /* sio path */
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/*
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* actual parameters and runtime state (i.e. once opened)
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*/
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unsigned mode; /* bitmap of MODE_xxx */
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unsigned bufsz, round, rate;
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struct aparams ipar, opar;
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struct aproc *mix, *sub, *submon;
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struct aproc *rec, *play, *mon;
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struct aproc *midi;
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};
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extern struct dev *dev_list;
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int dev_run(struct dev *);
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int dev_ref(struct dev *);
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void dev_unref(struct dev *);
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void dev_del(struct dev *);
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void dev_wakeup(struct dev *);
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void dev_drain(struct dev *);
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struct dev *dev_new_thru(void);
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struct dev *dev_new_loop(struct aparams *, struct aparams *, unsigned);
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struct dev *dev_new_sio(char *, unsigned,
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struct aparams *, struct aparams *, unsigned, unsigned, unsigned);
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int dev_thruadd(struct dev *, char *, int, int);
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void dev_midiattach(struct dev *, struct abuf *, struct abuf *);
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unsigned dev_roundof(struct dev *, unsigned);
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int dev_getpos(struct dev *);
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void dev_attach(struct dev *, char *, unsigned,
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struct abuf *, struct aparams *, unsigned,
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struct abuf *, struct aparams *, unsigned,
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unsigned, int);
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void dev_setvol(struct dev *, struct abuf *, int);
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#endif /* !define(DEV_H) */
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