mirror of https://github.com/ericonr/sndio.git
149 lines
3.0 KiB
C
149 lines
3.0 KiB
C
/* $OpenBSD$ */
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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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#include <sys/types.h>
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#include <sys/time.h>
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#include <poll.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sndio.h>
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#include "defs.h"
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#include "file.h"
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#include "midi.h"
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#include "miofile.h"
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#include "utils.h"
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struct miofile {
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struct mio_hdl *hdl;
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struct port *port;
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struct file *file;
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};
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int miofile_pollfd(void *, struct pollfd *);
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int miofile_revents(void *, struct pollfd *);
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void miofile_in(void *);
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void miofile_out(void *);
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void miofile_hup(void *);
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struct fileops miofile_ops = {
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"mio",
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miofile_pollfd,
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miofile_revents,
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miofile_in,
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miofile_out,
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miofile_hup
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};
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struct miofile *
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miofile_new(struct port *p)
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{
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struct mio_hdl *hdl;
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struct miofile *f;
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hdl = mio_open(p->path, p->midi->mode, 1);
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if (hdl == NULL)
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return NULL;
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f = xmalloc(sizeof(struct miofile));
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f->port = p;
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f->hdl = hdl;
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f->file = file_new(&miofile_ops, f, p->path, mio_nfds(f->hdl));
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return f;
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}
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void
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miofile_del(struct miofile *f)
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{
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file_del(f->file);
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mio_close(f->hdl);
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free(f);
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}
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int
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miofile_pollfd(void *addr, struct pollfd *pfd)
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{
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struct miofile *f = addr;
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struct midi *ep = f->port->midi;
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int events = 0;
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if ((ep->mode & MODE_MIDIIN) && ep->ibuf.used < ep->ibuf.len)
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events |= POLLIN;
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if ((ep->mode & MODE_MIDIOUT) && ep->obuf.used > 0)
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events |= POLLOUT;
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return mio_pollfd(f->hdl, pfd, events);
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}
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int
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miofile_revents(void *addr, struct pollfd *pfd)
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{
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struct miofile *f = addr;
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return mio_revents(f->hdl, pfd);
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}
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void
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miofile_in(void *arg)
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{
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struct miofile *f = arg;
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struct midi *ep = f->port->midi;
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unsigned char *data;
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unsigned int n, count;
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for (;;) {
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data = abuf_wgetblk(&ep->ibuf, &count);
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if (count == 0)
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break;
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n = mio_read(f->hdl, data, count);
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if (n == 0)
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break;
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abuf_wcommit(&ep->ibuf, n);
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midi_in(ep);
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if (n < count)
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break;
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}
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}
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void
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miofile_out(void *arg)
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{
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struct miofile *f = arg;
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struct midi *ep = f->port->midi;
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unsigned char *data;
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unsigned int n, count;
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for (;;) {
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data = abuf_rgetblk(&ep->obuf, &count);
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if (count == 0)
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break;
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n = mio_write(f->hdl, data, count);
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if (n == 0)
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break;
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abuf_rdiscard(&ep->obuf, n);
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if (n < count)
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break;
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}
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}
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void
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miofile_hup(void *arg)
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{
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struct miofile *f = arg;
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port_close(f->port);
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}
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