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/*
*Copyright (C) <2017> Alex B
*
*This program is free software: you can redistribute it and/or modify
*it under the terms of the GNU General Public License as published by
*the Free Software Foundation, either version 2 of the License, or
*(at your option) any later version.
*
*This program is distributed in the hope that it will be useful,
*but WITHOUT ANY WARRANTY; without even the implied warranty of
*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
*GNU General Public License for more details.
*
*You should have received a copy of the GNU General Public License
*along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#include "avahipoll.h"
#include <QThread>
#include <avahi-common/timeval.h>
static AvahiWatch* avahiWatchNew(const AvahiPoll* /*ap*/, int fd, AvahiWatchEvent event, AvahiWatchCallback callback, void* userdata)
{
return new AvahiWatch(fd, event, callback, userdata);
}
static void avahiWatchUpdate(AvahiWatch* w, AvahiWatchEvent event)
{
w->setEventType(event);
}
static AvahiWatchEvent avahiWatchGetEvents(AvahiWatch* w)
{
return w->previousEvent();
}
static void avahiWatchFree(AvahiWatch* w)
{
(w->thread() == QThread::currentThread()) ? delete w : w->deleteLater();
}
static AvahiTimeout* avahiTimeoutNew(const AvahiPoll* p, const struct timeval* tv, AvahiTimeoutCallback callback, void* userdata)
{
Q_UNUSED(p)
return new AvahiTimeout(tv, callback, userdata);
}
static void avahiTimeoutUpdate(AvahiTimeout* t, const struct timeval* tv)
{
t->updateTimeout(tv);
}
static void avahiTimeoutFree(AvahiTimeout* t)
{
(t->thread() == QThread::currentThread()) ? delete t : t->deleteLater();
}
const AvahiPoll* getAvahiPoll(void)
{
static const AvahiPoll avahiPoll =
{
nullptr,
avahiWatchNew,
avahiWatchUpdate,
avahiWatchGetEvents,
avahiWatchFree,
avahiTimeoutNew,
avahiTimeoutUpdate,
avahiTimeoutFree};
return &avahiPoll;
}
AvahiTimeout::AvahiTimeout(const struct timeval* tv, AvahiTimeoutCallback cb, void* ud)
: callback(cb), userData(ud)
{
connect(&timer, &QTimer::timeout, this, &AvahiTimeout::timeout);
updateTimeout(tv);
}
void AvahiTimeout::updateTimeout(const struct timeval* tv)
{
if (nullptr == tv) {
timer.stop();
return;
}
qint64 msecs = (avahi_age(tv)) / 1000;
msecs = (msecs > 0) ? 0 : -msecs;
timer.setInterval(msecs);
timer.start();
}
void AvahiTimeout::timeout()
{
timer.stop();
callback(this, userData);
}
AvahiWatch::AvahiWatch(int f, AvahiWatchEvent ev, AvahiWatchCallback cb, void* ud)
: notifier(nullptr), callback(cb), event(ev), prevEvent(static_cast<AvahiWatchEvent>(0)), userData(ud), fd(f)
{
setEventType(ev);
}
void AvahiWatch::setEventType(AvahiWatchEvent event)
{
this->event = event;
switch (event) {
case AVAHI_WATCH_IN: {
notifier.reset(new QSocketNotifier(fd, QSocketNotifier::Read, this));
connect(notifier.data(), &QSocketNotifier::activated, this, &AvahiWatch::activated);
break;
}
case AVAHI_WATCH_OUT: {
notifier.reset(new QSocketNotifier(fd, QSocketNotifier::Write, this));
connect(notifier.data(), &QSocketNotifier::activated, this, &AvahiWatch::activated);
break;
}
default:
// should not be reached
break;
}
}
void AvahiWatch::activated(int fd)
{
Q_UNUSED(fd)
prevEvent = event;
callback(this, this->fd, event, userData);
prevEvent = static_cast<AvahiWatchEvent>(0);
}
AvahiWatchEvent AvahiWatch::previousEvent()
{
return prevEvent;
}
#include "moc_avahipoll.cpp"
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