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/* $OpenBSD: miofile.c,v 1.4 2015/12/20 11:38:33 ratchov Exp $ */ |
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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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#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 "fdpass.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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int port_mio_pollfd(void *, struct pollfd *); |
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int port_mio_revents(void *, struct pollfd *); |
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void port_mio_in(void *); |
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void port_mio_out(void *); |
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void port_mio_hup(void *); |
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struct fileops port_mio_ops = { |
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"mio", |
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port_mio_pollfd, |
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port_mio_revents, |
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port_mio_in, |
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port_mio_out, |
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port_mio_hup |
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}; |
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int |
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port_mio_open(struct port *p) |
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{ |
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p->mio.hdl = fdpass_mio_open(p->num, p->midi->mode); |
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if (p->mio.hdl == NULL) |
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return 0; |
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p->mio.file = file_new(&port_mio_ops, p, p->path, mio_nfds(p->mio.hdl)); |
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return 1; |
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} |
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void |
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port_mio_close(struct port *p) |
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{ |
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file_del(p->mio.file); |
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mio_close(p->mio.hdl); |
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} |
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int |
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port_mio_pollfd(void *addr, struct pollfd *pfd) |
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{ |
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struct port *p = addr; |
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struct midi *ep = p->midi; |
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int events = 0; |
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if (ep->mode & MODE_MIDIIN) |
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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(p->mio.hdl, pfd, events); |
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} |
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int |
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port_mio_revents(void *addr, struct pollfd *pfd) |
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{ |
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struct port *p = addr; |
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return mio_revents(p->mio.hdl, pfd); |
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} |
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void |
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port_mio_in(void *arg) |
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{ |
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unsigned char data[MIDI_BUFSZ]; |
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struct port *p = arg; |
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struct midi *ep = p->midi; |
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int n; |
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for (;;) { |
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n = mio_read(p->mio.hdl, data, MIDI_BUFSZ); |
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if (n == 0) |
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break; |
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midi_in(ep, data, n); |
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} |
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} |
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void |
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port_mio_out(void *arg) |
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{ |
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struct port *p = arg; |
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struct midi *ep = p->midi; |
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unsigned char *data; |
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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(p->mio.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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if (p->state == PORT_DRAIN && ep->obuf.used == 0) |
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port_close(p); |
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midi_fill(ep); |
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} |
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void |
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port_mio_hup(void *arg) |
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{ |
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struct port *p = arg; |
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port_close(p); |
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} |