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/***
This file is part of PulseAudio.
Copyright 2006 Lennart Poettering
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
PulseAudio 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 Lesser General Public
License along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <pulse/timeval.h>
#include <pulse/xmalloc.h>
#include <pulsecore/macro.h>
#include "avahi-wrap.h"
typedef struct {
AvahiPoll api;
pa_mainloop_api *mainloop;
} pa_avahi_poll;
struct AvahiWatch {
pa_io_event *io_event;
pa_avahi_poll *avahi_poll;
AvahiWatchEvent current_event;
AvahiWatchCallback callback;
void *userdata;
};
static AvahiWatchEvent translate_io_flags_back(pa_io_event_flags_t e) {
return
(e & PA_IO_EVENT_INPUT ? AVAHI_WATCH_IN : 0) |
(e & PA_IO_EVENT_OUTPUT ? AVAHI_WATCH_OUT : 0) |
(e & PA_IO_EVENT_ERROR ? AVAHI_WATCH_ERR : 0) |
(e & PA_IO_EVENT_HANGUP ? AVAHI_WATCH_HUP : 0);
}
static pa_io_event_flags_t translate_io_flags(AvahiWatchEvent e) {
return
(e & AVAHI_WATCH_IN ? PA_IO_EVENT_INPUT : 0) |
(e & AVAHI_WATCH_OUT ? PA_IO_EVENT_OUTPUT : 0) |
(e & AVAHI_WATCH_ERR ? PA_IO_EVENT_ERROR : 0) |
(e & AVAHI_WATCH_HUP ? PA_IO_EVENT_HANGUP : 0);
}
static void watch_callback(pa_mainloop_api*a, pa_io_event* e, int fd, pa_io_event_flags_t events, void *userdata) {
AvahiWatch *w = userdata;
pa_assert(a);
pa_assert(e);
pa_assert(w);
w->current_event = translate_io_flags_back(events);
w->callback(w, fd, w->current_event, w->userdata);
w->current_event = 0;
}
static AvahiWatch* watch_new(const AvahiPoll *api, int fd, AvahiWatchEvent event, AvahiWatchCallback callback, void *userdata) {
pa_avahi_poll *p;
AvahiWatch *w;
pa_assert(api);
pa_assert(fd >= 0);
pa_assert(callback);
pa_assert_se(p = api->userdata);
w = pa_xnew(AvahiWatch, 1);
w->avahi_poll = p;
w->current_event = 0;
w->callback = callback;
w->userdata = userdata;
w->io_event = p->mainloop->io_new(p->mainloop, fd, translate_io_flags(event), watch_callback, w);
return w;
}
static void watch_update(AvahiWatch *w, AvahiWatchEvent event) {
pa_assert(w);
w->avahi_poll->mainloop->io_enable(w->io_event, translate_io_flags(event));
}
static AvahiWatchEvent watch_get_events(AvahiWatch *w) {
pa_assert(w);
return w->current_event;
}
static void watch_free(AvahiWatch *w) {
pa_assert(w);
w->avahi_poll->mainloop->io_free(w->io_event);
pa_xfree(w);
}
struct AvahiTimeout {
pa_time_event *time_event;
pa_avahi_poll *avahi_poll;
AvahiTimeoutCallback callback;
void *userdata;
};
static void timeout_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *t, void *userdata) {
AvahiTimeout *to = userdata;
pa_assert(a);
pa_assert(e);
to->callback(to, to->userdata);
}
static AvahiTimeout* timeout_new(const AvahiPoll *api, const struct timeval *tv, AvahiTimeoutCallback callback, void *userdata) {
pa_avahi_poll *p;
AvahiTimeout *t;
pa_assert(api);
pa_assert(callback);
pa_assert_se(p = api->userdata);
t = pa_xnew(AvahiTimeout, 1);
t->avahi_poll = p;
t->callback = callback;
t->userdata = userdata;
t->time_event = tv ? p->mainloop->time_new(p->mainloop, tv, timeout_callback, t) : NULL;
return t;
}
static void timeout_update(AvahiTimeout *t, const struct timeval *tv) {
pa_assert(t);
if (t->time_event && tv)
t->avahi_poll->mainloop->time_restart(t->time_event, tv);
else if (!t->time_event && tv)
t->time_event = t->avahi_poll->mainloop->time_new(t->avahi_poll->mainloop, tv, timeout_callback, t);
else if (t->time_event && !tv) {
t->avahi_poll->mainloop->time_free(t->time_event);
t->time_event = NULL;
}
}
static void timeout_free(AvahiTimeout *t) {
pa_assert(t);
if (t->time_event)
t->avahi_poll->mainloop->time_free(t->time_event);
pa_xfree(t);
}
AvahiPoll* pa_avahi_poll_new(pa_mainloop_api *m) {
pa_avahi_poll *p;
pa_assert(m);
p = pa_xnew(pa_avahi_poll, 1);
p->api.userdata = p;
p->api.watch_new = watch_new;
p->api.watch_update = watch_update;
p->api.watch_get_events = watch_get_events;
p->api.watch_free = watch_free;
p->api.timeout_new = timeout_new;
p->api.timeout_update = timeout_update;
p->api.timeout_free = timeout_free;
p->mainloop = m;
return &p->api;
}
void pa_avahi_poll_free(AvahiPoll *api) {
pa_avahi_poll *p;
pa_assert(api);
pa_assert_se(p = api->userdata);
pa_xfree(p);
}
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