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Annotation of src/usr.bin/aucat/sock.h, Revision 1.10

1.10    ! ratchov     1: /*     $OpenBSD: sock.h,v 1.9 2009/08/21 16:48:03 ratchov Exp $        */
1.1       ratchov     2: /*
                      3:  * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
                      4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17: #ifndef SOCK_H
                     18: #define SOCK_H
                     19:
1.8       ratchov    20: #include "amsg.h"
                     21: #include "aparams.h"
1.1       ratchov    22: #include "pipe.h"
                     23:
1.7       ratchov    24: struct opt;
                     25:
1.1       ratchov    26: struct sock {
                     27:        struct pipe pipe;
                     28:        /*
1.8       ratchov    29:         * Socket and protocol specific stuff, mainly used
1.1       ratchov    30:         * to decode/encode messages in the stream.
                     31:         */
                     32:        struct amsg rmsg, wmsg;         /* messages being sent/received */
                     33:        unsigned rtodo;                 /* input bytes not read yet */
                     34:        unsigned wtodo;                 /* output bytes not written yet */
                     35: #define SOCK_RDATA     0               /* data chunk being read */
                     36: #define SOCK_RMSG      1               /* amsg query being processed */
                     37: #define SOCK_RRET      2               /* amsg reply being returned */
                     38:        unsigned rstate;                /* state of the read-end FSM */
                     39: #define SOCK_WIDLE     0               /* nothing to do */
                     40: #define SOCK_WMSG      1               /* amsg being written */
                     41: #define SOCK_WDATA     2               /* data chunk being written */
                     42:        unsigned wstate;                /* state of the write-end FSM */
1.6       ratchov    43: #define SOCK_HELLO     0               /* waiting for HELLO message */
                     44: #define SOCK_INIT      1               /* parameter negotiation */
                     45: #define SOCK_START     2               /* filling play buffers */
                     46: #define SOCK_RUN       3               /* attached to the mix / sub */
1.7       ratchov    47: #define SOCK_MIDI      4               /* raw byte stream (midi) */
1.1       ratchov    48:        unsigned pstate;                /* one of the above */
                     49:        unsigned mode;                  /* a set of AMSG_PLAY, AMSG_REC */
                     50:        struct aparams rpar;            /* read (ie play) parameters */
                     51:        struct aparams wpar;            /* write (ie rec) parameters */
1.5       ratchov    52:        int delta;                      /* pos. change to send */
                     53:        int tickpending;                /* delta waiting to be transmitted */
1.1       ratchov    54:        unsigned bufsz;                 /* total buffer size */
                     55:        unsigned round;                 /* block size */
                     56:        unsigned xrun;                  /* one of AMSG_IGNORE, ... */
1.3       ratchov    57:        int vol;                        /* requested volume */
1.10    ! ratchov    58:        int lastvol;                    /* last volume */
1.9       ratchov    59:        int slot;                       /* mixer ctl slot number */
1.7       ratchov    60:        struct opt *opt;                /* "subdevice" definition */
1.1       ratchov    61: };
                     62:
1.7       ratchov    63: struct sock *sock_new(struct fileops *, int fd);
1.1       ratchov    64: extern struct fileops sock_ops;
                     65:
                     66: #endif /* !defined(SOCK_H) */