mirror of https://github.com/ericonr/sndio.git
75 lines
3.0 KiB
C
75 lines
3.0 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2008-2012 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 SOCK_H
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#define SOCK_H
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#include "amsg.h"
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struct file;
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struct slot;
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struct midi;
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struct sock {
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struct sock *next;
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int fd;
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struct file *file;
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struct amsg rmsg, wmsg; /* messages being sent/received */
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unsigned int wmax; /* max bytes we're allowed to write */
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unsigned int rmax; /* max bytes we're allowed to read */
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unsigned int rsize; /* input bytes to read (DATA msg) */
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unsigned int wsize; /* output bytes to write (DATA msg) */
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unsigned int rtodo; /* input bytes not read yet */
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unsigned int wtodo; /* output bytes not written yet */
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#define SOCK_RIDLE 0 /* not expecting messages */
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#define SOCK_RMSG 1 /* expecting a message */
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#define SOCK_RDATA 2 /* data chunk being read */
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#define SOCK_RRET 3 /* reply being returned */
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unsigned int rstate; /* state of the read-end FSM */
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#define SOCK_WIDLE 0 /* nothing to do */
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#define SOCK_WMSG 1 /* amsg being written */
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#define SOCK_WDATA 2 /* data chunk being written */
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unsigned int wstate; /* state of the write-end FSM */
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#define SOCK_AUTH 0 /* waiting for AUTH message */
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#define SOCK_HELLO 1 /* waiting for HELLO message */
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#define SOCK_INIT 2 /* parameter negotiation */
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#define SOCK_START 3 /* filling play buffers */
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#define SOCK_STOP 4 /* draining rec buffers */
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unsigned int pstate; /* one of the above */
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int tickpending; /* tick waiting to be transmitted */
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int fillpending; /* flowctl waiting to be transmitted */
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int stoppending; /* last STOP ack to be sent */
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unsigned int walign; /* align written data to this */
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unsigned int ralign; /* read data is aligned to this */
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int lastvol; /* last volume */
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struct slot *slot; /* audio device slot number */
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struct midi *midi; /* midi endpoint */
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struct port *port; /* midi port */
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struct ctlslot *ctlslot;
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struct amsg_ctl_desc *ctldesc; /* temporary buffer */
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#define SOCK_CTLDESC 1 /* dump desc and send changes */
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#define SOCK_CTLVAL 2 /* send value changes */
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unsigned int ctlops; /* bitmap of above */
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int ctlsyncpending; /* CTLSYNC waiting to be transmitted */
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unsigned int sesrefs; /* 1 if socket belongs to a session */
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};
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struct sock *sock_new(int fd);
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void sock_close(struct sock *);
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extern struct sock *sock_list;
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#endif /* !defined(SOCK_H) */
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