mirror of
https://github.com/ericonr/sndio.git
synced 2024-02-18 04:45:21 -06:00
146 lines
3.7 KiB
C
146 lines
3.7 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/socket.h>
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#include <sys/un.h>
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#include <errno.h>
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#include <fcntl.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 <unistd.h>
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#include "aucat.h"
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#include "debug.h"
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#include "mio_priv.h"
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#ifdef COMPAT_STRLCPY
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#include "bsd-compat.h"
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#endif
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struct mio_aucat_hdl {
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struct mio_hdl mio;
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struct aucat aucat;
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int events;
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};
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static void mio_aucat_close(struct mio_hdl *);
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static size_t mio_aucat_read(struct mio_hdl *, void *, size_t);
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static size_t mio_aucat_write(struct mio_hdl *, const void *, size_t);
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static int mio_aucat_pollfd(struct mio_hdl *, struct pollfd *, int);
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static int mio_aucat_revents(struct mio_hdl *, struct pollfd *);
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static struct mio_ops mio_aucat_ops = {
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mio_aucat_close,
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mio_aucat_write,
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mio_aucat_read,
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mio_aucat_pollfd,
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mio_aucat_revents,
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};
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static struct mio_hdl *
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mio_xxx_open(const char *str, unsigned mode, int nbio, int isaudio)
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{
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struct mio_aucat_hdl *hdl;
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hdl = malloc(sizeof(struct mio_aucat_hdl));
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if (hdl == NULL)
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return NULL;
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if (!aucat_open(&hdl->aucat, str, mode, isaudio))
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goto bad;
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mio_create(&hdl->mio, &mio_aucat_ops, mode, nbio);
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if (!aucat_setfl(&hdl->aucat, nbio, &hdl->mio.eof))
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goto bad;
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return (struct mio_hdl *)hdl;
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bad:
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free(hdl);
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return NULL;
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}
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struct mio_hdl *
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mio_midithru_open(const char *str, unsigned mode, int nbio)
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{
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return mio_xxx_open(str, mode, nbio, 0);
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}
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struct mio_hdl *
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mio_aucat_open(const char *str, unsigned mode, int nbio)
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{
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return mio_xxx_open(str, mode, nbio, 1);
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}
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static void
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mio_aucat_close(struct mio_hdl *sh)
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{
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struct mio_aucat_hdl *hdl = (struct mio_aucat_hdl *)sh;
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if (!hdl->mio.eof)
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aucat_setfl(&hdl->aucat, 0, &hdl->mio.eof);
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aucat_close(&hdl->aucat, hdl->mio.eof);
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free(hdl);
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}
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static size_t
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mio_aucat_read(struct mio_hdl *sh, void *buf, size_t len)
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{
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struct mio_aucat_hdl *hdl = (struct mio_aucat_hdl *)sh;
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while (hdl->aucat.rstate == RSTATE_MSG) {
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if (!aucat_rmsg(&hdl->aucat, &hdl->mio.eof))
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return 0;
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}
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return aucat_rdata(&hdl->aucat, buf, len, &hdl->mio.eof);
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}
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static size_t
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mio_aucat_write(struct mio_hdl *sh, const void *buf, size_t len)
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{
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struct mio_aucat_hdl *hdl = (struct mio_aucat_hdl *)sh;
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return aucat_wdata(&hdl->aucat, buf, len, 1, &hdl->mio.eof);
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}
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static int
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mio_aucat_pollfd(struct mio_hdl *sh, struct pollfd *pfd, int events)
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{
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struct mio_aucat_hdl *hdl = (struct mio_aucat_hdl *)sh;
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hdl->events = events;
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return aucat_pollfd(&hdl->aucat, pfd, events);
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}
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static int
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mio_aucat_revents(struct mio_hdl *sh, struct pollfd *pfd)
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{
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struct mio_aucat_hdl *hdl = (struct mio_aucat_hdl *)sh;
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int revents = pfd->revents;
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if (revents & POLLIN) {
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while (hdl->aucat.rstate == RSTATE_MSG) {
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if (!aucat_rmsg(&hdl->aucat, &hdl->mio.eof))
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break;
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}
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if (hdl->aucat.rstate != RSTATE_DATA)
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revents &= ~POLLIN;
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}
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if (hdl->mio.eof)
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return POLLHUP;
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return revents & (hdl->events | POLLHUP);
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}
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