Return to miofile.c CVS log

Up to [local] / src / usr.bin / sndiod

Annotation of src/usr.bin/sndiod/miofile.c, Revision 1.4

1.4     ! ratchov     1: /*     $OpenBSD: miofile.c,v 1.3 2012/11/30 22:26:34 ratchov Exp $     */
1.1       ratchov     2: /*
                      3:  * Copyright (c) 2008-2012 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:
                     18: #include <sys/types.h>
                     19: #include <sys/time.h>
                     20:
                     21: #include <poll.h>
                     22: #include <stdio.h>
                     23: #include <stdlib.h>
                     24: #include <string.h>
                     25: #include <sndio.h>
                     26: #include "defs.h"
1.4     ! ratchov    27: #include "fdpass.h"
1.1       ratchov    28: #include "file.h"
                     29: #include "midi.h"
                     30: #include "miofile.h"
                     31: #include "utils.h"
                     32:
                     33: int  port_mio_pollfd(void *, struct pollfd *);
                     34: int  port_mio_revents(void *, struct pollfd *);
                     35: void port_mio_in(void *);
                     36: void port_mio_out(void *);
                     37: void port_mio_hup(void *);
                     38:
                     39: struct fileops port_mio_ops = {
                     40:        "mio",
                     41:        port_mio_pollfd,
                     42:        port_mio_revents,
                     43:        port_mio_in,
                     44:        port_mio_out,
                     45:        port_mio_hup
                     46: };
                     47:
                     48: int
                     49: port_mio_open(struct port *p)
                     50: {
1.4     ! ratchov    51:        p->mio.hdl = fdpass_mio_open(p->num, p->midi->mode);
1.1       ratchov    52:        if (p->mio.hdl == NULL)
                     53:                return 0;
                     54:        p->mio.file = file_new(&port_mio_ops, p, p->path, mio_nfds(p->mio.hdl));
                     55:        return 1;
                     56: }
                     57:
                     58: void
                     59: port_mio_close(struct port *p)
                     60: {
                     61:        file_del(p->mio.file);
                     62:        mio_close(p->mio.hdl);
                     63: }
                     64:
                     65: int
                     66: port_mio_pollfd(void *addr, struct pollfd *pfd)
                     67: {
                     68:        struct port *p = addr;
                     69:        struct midi *ep = p->midi;
                     70:        int events = 0;
                     71:
1.2       ratchov    72:        if (ep->mode & MODE_MIDIIN)
1.1       ratchov    73:                events |= POLLIN;
                     74:        if ((ep->mode & MODE_MIDIOUT) && ep->obuf.used > 0)
                     75:                events |= POLLOUT;
                     76:        return mio_pollfd(p->mio.hdl, pfd, events);
                     77: }
                     78:
                     79: int
                     80: port_mio_revents(void *addr, struct pollfd *pfd)
                     81: {
                     82:        struct port *p = addr;
                     83:
                     84:        return mio_revents(p->mio.hdl, pfd);
                     85: }
                     86:
                     87: void
                     88: port_mio_in(void *arg)
                     89: {
1.2       ratchov    90:        unsigned char data[MIDI_BUFSZ];
1.1       ratchov    91:        struct port *p = arg;
                     92:        struct midi *ep = p->midi;
1.2       ratchov    93:        int n;
1.1       ratchov    94:
                     95:        for (;;) {
1.2       ratchov    96:                n = mio_read(p->mio.hdl, data, MIDI_BUFSZ);
1.1       ratchov    97:                if (n == 0)
                     98:                        break;
1.2       ratchov    99:                midi_in(ep, data, n);
1.1       ratchov   100:        }
                    101: }
                    102:
                    103: void
                    104: port_mio_out(void *arg)
                    105: {
                    106:        struct port *p = arg;
                    107:        struct midi *ep = p->midi;
                    108:        unsigned char *data;
                    109:        int n, count;
                    110:
                    111:        for (;;) {
                    112:                data = abuf_rgetblk(&ep->obuf, &count);
                    113:                if (count == 0)
                    114:                        break;
                    115:                n = mio_write(p->mio.hdl, data, count);
                    116:                if (n == 0)
                    117:                        break;
                    118:                abuf_rdiscard(&ep->obuf, n);
                    119:                if (n < count)
                    120:                        break;
                    121:        }
1.3       ratchov   122:        if (p->state == PORT_DRAIN && ep->obuf.used == 0)
                    123:                port_close(p);
1.2       ratchov   124:        midi_fill(ep);
1.1       ratchov   125: }
                    126:
                    127: void
                    128: port_mio_hup(void *arg)
                    129: {
                    130:        struct port *p = arg;
                    131:
                    132:        port_close(p);
                    133: }