mirror of
https://github.com/ericonr/sndio.git
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165 lines
3.5 KiB
C
165 lines
3.5 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 "conf.h"
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#include "file.h"
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#include "miofile.h"
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#ifdef DEBUG
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#include "dbg.h"
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#endif
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struct miofile {
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struct file file;
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struct mio_hdl *hdl;
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};
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void miofile_close(struct file *);
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unsigned miofile_read(struct file *, unsigned char *, unsigned);
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unsigned miofile_write(struct file *, unsigned char *, unsigned);
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void miofile_start(struct file *);
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void miofile_stop(struct file *);
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int miofile_nfds(struct file *);
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int miofile_pollfd(struct file *, struct pollfd *, int);
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int miofile_revents(struct file *, struct pollfd *);
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struct fileops miofile_ops = {
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"mio",
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sizeof(struct miofile),
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miofile_close,
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miofile_read,
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miofile_write,
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NULL, /* start */
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NULL, /* stop */
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miofile_nfds,
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miofile_pollfd,
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miofile_revents
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};
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/*
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* open the device
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*/
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struct miofile *
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miofile_new(struct fileops *ops, char *path, unsigned mode)
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{
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char *siopath;
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struct mio_hdl *hdl;
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struct miofile *f;
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siopath = (strcmp(path, "default") == 0) ? NULL : path;
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hdl = mio_open(siopath, mode, 1);
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if (hdl == NULL)
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return NULL;
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f = (struct miofile *)file_new(ops, path, mio_nfds(hdl));
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if (f == NULL)
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goto bad_close;
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f->hdl = hdl;
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return f;
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bad_close:
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mio_close(hdl);
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return NULL;
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}
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unsigned
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miofile_read(struct file *file, unsigned char *data, unsigned count)
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{
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struct miofile *f = (struct miofile *)file;
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unsigned n;
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n = mio_read(f->hdl, data, count);
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if (n == 0) {
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f->file.state &= ~FILE_ROK;
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if (mio_eof(f->hdl)) {
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#ifdef DEBUG
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dbg_puts(f->file.name);
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dbg_puts(": failed to read from device\n");
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#endif
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file_eof(&f->file);
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} else {
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#ifdef DEBUG
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if (debug_level >= 4) {
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file_dbg(&f->file);
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dbg_puts(": reading blocked\n");
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}
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#endif
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}
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return 0;
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}
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return n;
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}
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unsigned
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miofile_write(struct file *file, unsigned char *data, unsigned count)
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{
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struct miofile *f = (struct miofile *)file;
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unsigned n;
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n = mio_write(f->hdl, data, count);
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if (n == 0) {
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f->file.state &= ~FILE_WOK;
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if (mio_eof(f->hdl)) {
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#ifdef DEBUG
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dbg_puts(f->file.name);
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dbg_puts(": failed to write on device\n");
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#endif
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file_hup(&f->file);
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} else {
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#ifdef DEBUG
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if (debug_level >= 4) {
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file_dbg(&f->file);
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dbg_puts(": writing blocked\n");
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}
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#endif
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}
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return 0;
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}
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return n;
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}
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int
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miofile_nfds(struct file *file)
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{
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return mio_nfds(((struct miofile *)file)->hdl);
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}
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int
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miofile_pollfd(struct file *file, struct pollfd *pfd, int events)
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{
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return mio_pollfd(((struct miofile *)file)->hdl, pfd, events);
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}
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int
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miofile_revents(struct file *file, struct pollfd *pfd)
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{
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return mio_revents(((struct miofile *)file)->hdl, pfd);
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}
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void
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miofile_close(struct file *file)
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{
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return mio_close(((struct miofile *)file)->hdl);
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}
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