mirror of
https://github.com/ericonr/sndio.git
synced 2024-02-18 04:45:21 -06:00
206 lines
4.4 KiB
C
206 lines
4.4 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2014 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/time.h>
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#include <sys/types.h>
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#include <poll.h>
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#include <sndio.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 "abuf.h"
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#include "defs.h"
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#include "dev.h"
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#include "dsp.h"
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#include "file.h"
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#include "dev_sioctl.h"
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#include "utils.h"
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#include "bsd-compat.h"
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void dev_sioctl_ondesc(void *, struct sioctl_desc *, int);
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void dev_sioctl_onval(void *, unsigned int, unsigned int);
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int dev_sioctl_pollfd(void *, struct pollfd *);
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int dev_sioctl_revents(void *, struct pollfd *);
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void dev_sioctl_in(void *);
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void dev_sioctl_out(void *);
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void dev_sioctl_hup(void *);
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struct fileops dev_sioctl_ops = {
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"sioctl",
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dev_sioctl_pollfd,
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dev_sioctl_revents,
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dev_sioctl_in,
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dev_sioctl_out,
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dev_sioctl_hup
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};
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void
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dev_sioctl_ondesc(void *arg, struct sioctl_desc *desc, int val)
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{
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#define GROUP_PREFIX "dev"
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#define GROUP_PREFIX_LEN (sizeof(GROUP_PREFIX))
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char group_buf[CTL_NAMEMAX], *group;
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struct dev *d = arg;
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size_t len;
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int addr;
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if (desc == NULL)
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return;
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addr = CTLADDR_END + desc->addr;
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dev_rmctl(d, addr);
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/*
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* prefix group names we use (top-level and "app") with "dev."
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* to ensure that all controls have unique names when multiple
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* sndiod's are chained
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*/
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if (desc->group[0] == 0)
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group = GROUP_PREFIX;
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else if (strcmp(desc->group, "app") == 0) {
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group = group_buf;
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len = snprintf(group_buf, CTL_NAMEMAX,
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GROUP_PREFIX ".%s", desc->group);
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if (len >= CTL_NAMEMAX)
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return;
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} else
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group = desc->group;
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dev_addctl(d, group, desc->type, addr,
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desc->node0.name, desc->node0.unit, desc->func,
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desc->node1.name, desc->node1.unit, val);
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}
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void
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dev_sioctl_onval(void *arg, unsigned int addr, unsigned int val)
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{
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struct dev *d = arg;
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struct ctl *c;
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addr += CTLADDR_END;
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dev_log(d);
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log_puts(": onctl: addr = ");
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log_putu(addr);
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log_puts(", val = ");
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log_putu(val);
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log_puts("\n");
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for (c = d->ctl_list; c != NULL; c = c->next) {
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if (c->addr != addr)
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continue;
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ctl_log(c);
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log_puts(": new value -> ");
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log_putu(val);
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log_puts("\n");
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c->val_mask = ~0U;
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c->curval = val;
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}
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}
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/*
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* open the control device.
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*/
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void
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dev_sioctl_open(struct dev *d)
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{
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if (d->sioctl.hdl == NULL)
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return;
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sioctl_ondesc(d->sioctl.hdl, dev_sioctl_ondesc, d);
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sioctl_onval(d->sioctl.hdl, dev_sioctl_onval, d);
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d->sioctl.file = file_new(&dev_sioctl_ops, d, "mix",
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sioctl_nfds(d->sioctl.hdl));
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}
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/*
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* close the control device.
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*/
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void
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dev_sioctl_close(struct dev *d)
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{
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if (d->sioctl.hdl == NULL)
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return;
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file_del(d->sioctl.file);
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}
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int
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dev_sioctl_pollfd(void *arg, struct pollfd *pfd)
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{
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struct dev *d = arg;
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struct ctl *c;
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int events = 0;
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for (c = d->ctl_list; c != NULL; c = c->next) {
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if (c->dirty)
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events |= POLLOUT;
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}
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return sioctl_pollfd(d->sioctl.hdl, pfd, events);
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}
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int
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dev_sioctl_revents(void *arg, struct pollfd *pfd)
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{
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struct dev *d = arg;
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return sioctl_revents(d->sioctl.hdl, pfd);
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}
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void
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dev_sioctl_in(void *arg)
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{
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}
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void
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dev_sioctl_out(void *arg)
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{
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struct dev *d = arg;
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struct ctl *c;
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int cnt;
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/*
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* for each dirty ctl, call sioctl_setval() and dev_unref(). As
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* dev_unref() may destroy the ctl_list, we must call it after
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* we've finished iterating on it.
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*/
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cnt = 0;
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for (c = d->ctl_list; c != NULL; c = c->next) {
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if (!c->dirty)
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continue;
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if (!sioctl_setval(d->sioctl.hdl,
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c->addr - CTLADDR_END, c->curval)) {
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ctl_log(c);
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log_puts(": set failed\n");
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break;
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}
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if (log_level >= 2) {
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ctl_log(c);
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log_puts(": changed\n");
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}
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c->dirty = 0;
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cnt++;
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}
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while (cnt-- > 0)
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dev_unref(d);
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}
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void
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dev_sioctl_hup(void *arg)
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{
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struct dev *d = arg;
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dev_sioctl_close(d);
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}
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