static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SINK(o)->userdata;
switch (code) {
case PA_SINK_MESSAGE_SET_STATE:
if (PA_PTR_TO_UINT(data) == PA_SINK_RUNNING)
pa_rtclock_get(&u->timestamp);
break;
case PA_SINK_MESSAGE_GET_LATENCY: {
struct timeval now;
pa_rtclock_get(&now);
if (pa_timeval_cmp(&u->timestamp, &now) > 0)
*((pa_usec_t*) data) = 0;
else
*((pa_usec_t*) data) = pa_timeval_diff(&u->timestamp, &now);
break;
}
}
return pa_sink_process_msg(o, code, data, offset, chunk);
}
static gboolean check_func(GSource *source) {
pa_glib_mainloop *g = (pa_glib_mainloop*) source;
pa_io_event *e;
g_assert(g);
if (g->n_enabled_defer_events)
return TRUE;
else if (g->n_enabled_time_events) {
pa_time_event *t;
GTimeVal now;
struct timeval tvnow;
t = find_next_time_event(g);
g_assert(t);
g_get_current_time(&now);
tvnow.tv_sec = now.tv_sec;
tvnow.tv_usec = now.tv_usec;
if (pa_timeval_cmp(&t->timeval, &tvnow) <= 0)
return TRUE;
}
for (e = g->io_events; e; e = e->next)
if (!e->dead && e->poll_fd.revents != 0)
return TRUE;
return FALSE;
}
static gboolean prepare_func(GSource *source, gint *timeout) {
pa_glib_mainloop *g = (pa_glib_mainloop*) source;
g_assert(g);
g_assert(timeout);
scan_dead(g);
if (g->n_enabled_defer_events) {
*timeout = 0;
return TRUE;
} else if (g->n_enabled_time_events) {
pa_time_event *t;
GTimeVal now;
struct timeval tvnow;
pa_usec_t usec;
t = find_next_time_event(g);
g_assert(t);
g_get_current_time(&now);
tvnow.tv_sec = now.tv_sec;
tvnow.tv_usec = now.tv_usec;
if (pa_timeval_cmp(&t->timeval, &tvnow) <= 0) {
*timeout = 0;
return TRUE;
}
usec = pa_timeval_diff(&t->timeval, &tvnow);
*timeout = (gint) (usec / 1000);
} else
*timeout = -1;
return FALSE;
}
static gboolean dispatch_func(GSource *source, GSourceFunc callback, gpointer userdata) {
pa_glib_mainloop *g = (pa_glib_mainloop*) source;
pa_io_event *e;
g_assert(g);
if (g->n_enabled_defer_events) {
pa_defer_event *d;
for (d = g->defer_events; d; d = d->next) {
if (d->dead || !d->enabled)
continue;
break;
}
g_assert(d);
d->callback(&g->api, d, d->userdata);
return TRUE;
}
if (g->n_enabled_time_events) {
GTimeVal now;
struct timeval tvnow;
pa_time_event *t;
t = find_next_time_event(g);
g_assert(t);
g_get_current_time(&now);
tvnow.tv_sec = now.tv_sec;
tvnow.tv_usec = now.tv_usec;
if (pa_timeval_cmp(&t->timeval, &tvnow) <= 0) {
/* Disable time event */
glib_time_restart(t, NULL);
t->callback(&g->api, t, &t->timeval, t->userdata);
return TRUE;
}
}
for (e = g->io_events; e; e = e->next)
if (!e->dead && e->poll_fd.revents != 0) {
e->callback(&g->api, e, e->poll_fd.fd, map_flags_from_glib(e->poll_fd.revents), e->userdata);
e->poll_fd.revents = 0;
return TRUE;
}
return FALSE;
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
pa_assert(u);
pa_log_debug("Thread starting up");
pa_thread_mq_install(&u->thread_mq);
pa_rtpoll_install(u->rtpoll);
pa_rtclock_get(&u->timestamp);
for (;;) {
int ret;
/* Render some data and drop it immediately */
if (u->sink->thread_info.state == PA_SINK_RUNNING) {
struct timeval now;
pa_rtclock_get(&now);
if (pa_timeval_cmp(&u->timestamp, &now) <= 0) {
pa_sink_skip(u->sink, u->block_size);
pa_timeval_add(&u->timestamp, pa_bytes_to_usec(u->block_size, &u->sink->sample_spec));
}
pa_rtpoll_set_timer_absolute(u->rtpoll, &u->timestamp);
} else
pa_rtpoll_set_timer_disabled(u->rtpoll);
/* Hmm, nothing to do. Let's sleep */
if ((ret = pa_rtpoll_run(u->rtpoll, 1)) < 0)
goto fail;
if (ret == 0)
goto finish;
}
fail:
/* If this was no regular exit from the loop we have to continue
* processing messages until we received PA_MESSAGE_SHUTDOWN */
pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
finish:
pa_log_debug("Thread shutting down");
}
static struct timeval* wallclock_from_rtclock(struct timeval *tv) {
struct timeval wc_now, rt_now;
pa_assert(tv);
pa_gettimeofday(&wc_now);
pa_rtclock_get(&rt_now);
/* pa_timeval_sub() saturates on underflow! */
if (pa_timeval_cmp(&rt_now, tv) < 0)
pa_timeval_add(&wc_now, pa_timeval_diff(tv, &rt_now));
else
pa_timeval_sub(&wc_now, pa_timeval_diff(&rt_now, tv));
*tv = wc_now;
return tv;
}
static void work(void *p) {
pa_log_notice("CPU%i: Created thread.", PA_PTR_TO_UINT(p));
pa_make_realtime(12);
#ifdef HAVE_PTHREAD_SETAFFINITY_NP
{
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
cpuset_t mask;
#else
cpu_set_t mask;
#endif
CPU_ZERO(&mask);
CPU_SET((size_t) PA_PTR_TO_UINT(p), &mask);
pa_assert_se(pthread_setaffinity_np(pthread_self(), sizeof(mask), &mask) == 0);
}
#endif
for (;;) {
struct timeval now, end;
uint64_t usec;
pa_log_notice("CPU%i: Sleeping for 1s", PA_PTR_TO_UINT(p));
pa_msleep(1000);
usec =
(uint64_t) ((((double) rand())*(double)(msec_upper-msec_lower)*PA_USEC_PER_MSEC)/RAND_MAX) +
(uint64_t) ((uint64_t) msec_lower*PA_USEC_PER_MSEC);
pa_log_notice("CPU%i: Freezing for %ims", PA_PTR_TO_UINT(p), (int) (usec/PA_USEC_PER_MSEC));
pa_rtclock_get(&end);
pa_timeval_add(&end, usec);
do {
pa_rtclock_get(&now);
} while (pa_timeval_cmp(&now, &end) < 0);
}
}
static pa_time_event* glib_time_new(
pa_mainloop_api*m,
const struct timeval *tv,
pa_time_event_cb_t cb,
void *userdata) {
pa_glib_mainloop *g;
pa_time_event *e;
g_assert(m);
g_assert(m->userdata);
g_assert(cb);
g = m->userdata;
e = pa_xnew(pa_time_event, 1);
e->mainloop = g;
e->dead = 0;
if ((e->enabled = !!tv)) {
e->timeval = *tv;
g->n_enabled_time_events++;
if (g->cached_next_time_event) {
g_assert(g->cached_next_time_event->enabled);
if (pa_timeval_cmp(tv, &g->cached_next_time_event->timeval) < 0)
g->cached_next_time_event = e;
}
}
e->callback = cb;
e->userdata = userdata;
e->destroy_callback = NULL;
PA_LLIST_PREPEND(pa_time_event, g->time_events, e);
return e;
}
static void glib_time_restart(pa_time_event*e, const struct timeval *tv) {
g_assert(e);
g_assert(!e->dead);
if (e->enabled && !tv) {
g_assert(e->mainloop->n_enabled_time_events > 0);
e->mainloop->n_enabled_time_events--;
} else if (!e->enabled && tv)
e->mainloop->n_enabled_time_events++;
if ((e->enabled = !!tv))
e->timeval = *tv;
if (e->mainloop->cached_next_time_event == e)
e->mainloop->cached_next_time_event = NULL;
if (e->mainloop->cached_next_time_event && e->enabled) {
g_assert(e->mainloop->cached_next_time_event->enabled);
if (pa_timeval_cmp(tv, &e->mainloop->cached_next_time_event->timeval) < 0)
e->mainloop->cached_next_time_event = e;
}
}
static pa_time_event* find_next_time_event(pa_glib_mainloop *g) {
pa_time_event *t, *n = NULL;
g_assert(g);
if (g->cached_next_time_event)
return g->cached_next_time_event;
for (t = g->time_events; t; t = t->next) {
if (t->dead || !t->enabled)
continue;
if (!n || pa_timeval_cmp(&t->timeval, &n->timeval) < 0) {
n = t;
/* Shortcut for tv = { 0, 0 } */
if (n->timeval.tv_sec <= 0)
break;
}
}
g->cached_next_time_event = n;
return n;
}
