/* $OpenBSD: sock.h,v 1.4 2008/11/16 18:34:56 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 SOCK_H #define SOCK_H #include "pipe.h" #include "aparams.h" #include "amsg.h" struct sock { struct pipe pipe; /* * socket and protocol specific stuff, mainly used * to decode/encode messages in the stream. */ struct amsg rmsg, wmsg; /* messages being sent/received */ unsigned rtodo; /* input bytes not read yet */ unsigned wtodo; /* output bytes not written yet */ #define SOCK_RDATA 0 /* data chunk being read */ #define SOCK_RMSG 1 /* amsg query being processed */ #define SOCK_RRET 2 /* amsg reply being returned */ unsigned rstate; /* state of the read-end FSM */ #define SOCK_WIDLE 0 /* nothing to do */ #define SOCK_WMSG 1 /* amsg being written */ #define SOCK_WDATA 2 /* data chunk being written */ unsigned wstate; /* state of the write-end FSM */ #define SOCK_INIT 0 /* parameter negotiation */ #define SOCK_START 1 /* filling play buffers */ #define SOCK_RUN 2 /* attached to the mix / sub */ unsigned pstate; /* one of the above */ unsigned mode; /* a set of AMSG_PLAY, AMSG_REC */ struct aparams rpar; /* read (ie play) parameters */ struct aparams wpar; /* write (ie rec) parameters */ int idelta; /* input (rec) pos. change to send */ int odelta; /* output (play) pos. change to send */ unsigned bufsz; /* total buffer size */ unsigned round; /* block size */ unsigned xrun; /* one of AMSG_IGNORE, ... */ int vol; /* requested volume */ int maxweight; /* max dynamic range */ struct aparams templ_rpar; /* template for rpar */ struct aparams templ_wpar; /* template for wpar */ }; struct sock *sock_new(struct fileops *, int fd, char *, struct aparams *, struct aparams *, int); extern struct fileops sock_ops; #endif /* !defined(SOCK_H) */