static void
poll_func (GstBus * bus, GstMessage * message, GstBusPollData * poll_data)
{
GstMessageType type;
if (!g_main_loop_is_running (poll_data->loop)) {
GST_DEBUG ("mainloop %p not running", poll_data->loop);
return;
}
type = GST_MESSAGE_TYPE (message);
if (type & poll_data->events) {
g_return_if_fail (poll_data->message == NULL);
/* keep ref to message */
poll_data->message = gst_message_ref (message);
GST_DEBUG ("mainloop %p quit", poll_data->loop);
g_main_loop_quit (poll_data->loop);
} else {
GST_DEBUG ("type %08x does not match %08x", type, poll_data->events);
}
}
static gboolean
play_bus_msg (GstBus * bus, GstMessage * msg, gpointer user_data)
{
GstPlay *play = user_data;
switch (GST_MESSAGE_TYPE (msg)) {
case GST_MESSAGE_ASYNC_DONE:
/* dump graph on preroll */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (play->playbin),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-play.async-done");
g_print ("Prerolled.\r");
if (play->missing != NULL && play_install_missing_plugins (play)) {
g_print ("New plugins installed, trying again...\n");
--play->cur_idx;
play_next (play);
}
break;
case GST_MESSAGE_BUFFERING:{
gint percent;
if (!play->buffering)
g_print ("\n");
gst_message_parse_buffering (msg, &percent);
g_print ("%s %d%% \r", _("Buffering..."), percent);
if (percent == 100) {
/* a 100% message means buffering is done */
if (play->buffering) {
play->buffering = FALSE;
/* no state management needed for live pipelines */
if (!play->is_live)
gst_element_set_state (play->playbin, play->desired_state);
}
} else {
/* buffering... */
if (!play->buffering) {
if (!play->is_live)
gst_element_set_state (play->playbin, GST_STATE_PAUSED);
play->buffering = TRUE;
}
}
break;
}
case GST_MESSAGE_CLOCK_LOST:{
g_print (_("Clock lost, selecting a new one\n"));
gst_element_set_state (play->playbin, GST_STATE_PAUSED);
gst_element_set_state (play->playbin, GST_STATE_PLAYING);
break;
}
case GST_MESSAGE_LATENCY:
g_print ("Redistribute latency...\n");
gst_bin_recalculate_latency (GST_BIN (play->playbin));
break;
case GST_MESSAGE_REQUEST_STATE:{
GstState state;
gchar *name;
name = gst_object_get_path_string (GST_MESSAGE_SRC (msg));
gst_message_parse_request_state (msg, &state);
g_print ("Setting state to %s as requested by %s...\n",
gst_element_state_get_name (state), name);
gst_element_set_state (play->playbin, state);
g_free (name);
break;
}
case GST_MESSAGE_EOS:
/* print final position at end */
play_timeout (play);
g_print ("\n");
/* and switch to next item in list */
if (!play_next (play)) {
g_print ("%s\n", _("Reached end of play list."));
g_main_loop_quit (play->loop);
}
break;
case GST_MESSAGE_WARNING:{
GError *err;
gchar *dbg = NULL;
/* dump graph on warning */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (play->playbin),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-play.warning");
gst_message_parse_warning (msg, &err, &dbg);
g_printerr ("WARNING %s\n", err->message);
if (dbg != NULL)
g_printerr ("WARNING debug information: %s\n", dbg);
g_clear_error (&err);
g_free (dbg);
break;
}
case GST_MESSAGE_ERROR:{
GError *err;
gchar *dbg;
/* dump graph on error */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (play->playbin),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-play.error");
gst_message_parse_error (msg, &err, &dbg);
g_printerr ("ERROR %s for %s\n", err->message, play->uris[play->cur_idx]);
if (dbg != NULL)
g_printerr ("ERROR debug information: %s\n", dbg);
g_clear_error (&err);
g_free (dbg);
/* flush any other error messages from the bus and clean up */
gst_element_set_state (play->playbin, GST_STATE_NULL);
if (play->missing != NULL && play_install_missing_plugins (play)) {
g_print ("New plugins installed, trying again...\n");
--play->cur_idx;
play_next (play);
break;
}
/* try next item in list then */
if (!play_next (play)) {
g_print ("%s\n", _("Reached end of play list."));
g_main_loop_quit (play->loop);
}
break;
}
case GST_MESSAGE_ELEMENT:
{
GstNavigationMessageType mtype = gst_navigation_message_get_type (msg);
if (mtype == GST_NAVIGATION_MESSAGE_EVENT) {
GstEvent *ev = NULL;
if (gst_navigation_message_parse_event (msg, &ev)) {
GstNavigationEventType e_type = gst_navigation_event_get_type (ev);
switch (e_type) {
case GST_NAVIGATION_EVENT_KEY_PRESS:
{
const gchar *key;
if (gst_navigation_event_parse_key_event (ev, &key)) {
GST_INFO ("Key press: %s", key);
if (strcmp (key, "Left") == 0)
key = GST_PLAY_KB_ARROW_LEFT;
else if (strcmp (key, "Right") == 0)
key = GST_PLAY_KB_ARROW_RIGHT;
else if (strcmp (key, "Up") == 0)
key = GST_PLAY_KB_ARROW_UP;
else if (strcmp (key, "Down") == 0)
key = GST_PLAY_KB_ARROW_DOWN;
else if (strcmp (key, "space") == 0)
key = " ";
else if (strlen (key) > 1)
break;
keyboard_cb (key, user_data);
}
break;
}
case GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS:
{
gint button;
if (gst_navigation_event_parse_mouse_button_event (ev, &button,
NULL, NULL)) {
if (button == 4) {
/* wheel up */
relative_seek (play, +0.08);
} else if (button == 5) {
/* wheel down */
relative_seek (play, -0.01);
}
}
break;
}
default:
break;
}
}
if (ev)
gst_event_unref (ev);
}
break;
}
default:
if (gst_is_missing_plugin_message (msg)) {
gchar *desc;
desc = gst_missing_plugin_message_get_description (msg);
g_print ("Missing plugin: %s\n", desc);
g_free (desc);
play->missing = g_list_append (play->missing, gst_message_ref (msg));
}
break;
}
return TRUE;
}
static gboolean
play_bus_msg (GstBus * bus, GstMessage * msg, gpointer user_data)
{
GstPlay *play = user_data;
switch (GST_MESSAGE_TYPE (msg)) {
case GST_MESSAGE_ASYNC_DONE:
/* dump graph on preroll */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (play->playbin),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-play.async-done");
g_print ("Prerolled.\r");
if (play->missing != NULL && play_install_missing_plugins (play)) {
g_print ("New plugins installed, trying again...\n");
--play->cur_idx;
play_next (play);
}
break;
case GST_MESSAGE_BUFFERING:{
gint percent;
if (!play->buffering)
g_print ("\n");
gst_message_parse_buffering (msg, &percent);
g_print ("%s %d%% \r", _("Buffering..."), percent);
if (percent == 100) {
/* a 100% message means buffering is done */
if (play->buffering) {
play->buffering = FALSE;
/* no state management needed for live pipelines */
if (!play->is_live)
gst_element_set_state (play->playbin, play->desired_state);
}
} else {
/* buffering... */
if (!play->buffering) {
if (!play->is_live)
gst_element_set_state (play->playbin, GST_STATE_PAUSED);
play->buffering = TRUE;
}
}
break;
}
case GST_MESSAGE_CLOCK_LOST:{
g_print (_("Clock lost, selecting a new one\n"));
gst_element_set_state (play->playbin, GST_STATE_PAUSED);
gst_element_set_state (play->playbin, GST_STATE_PLAYING);
break;
}
case GST_MESSAGE_LATENCY:
g_print ("Redistribute latency...\n");
gst_bin_recalculate_latency (GST_BIN (play->playbin));
break;
case GST_MESSAGE_REQUEST_STATE:{
GstState state;
gchar *name;
name = gst_object_get_path_string (GST_MESSAGE_SRC (msg));
gst_message_parse_request_state (msg, &state);
g_print ("Setting state to %s as requested by %s...\n",
gst_element_state_get_name (state), name);
gst_element_set_state (play->playbin, state);
g_free (name);
break;
}
case GST_MESSAGE_EOS:
/* print final position at end */
play_timeout (play);
g_print ("\n");
/* and switch to next item in list */
if (!play_next (play)) {
g_print ("Reached end of play list.\n");
g_main_loop_quit (play->loop);
}
break;
case GST_MESSAGE_WARNING:{
GError *err;
gchar *dbg = NULL;
/* dump graph on warning */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (play->playbin),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-play.warning");
gst_message_parse_warning (msg, &err, &dbg);
g_printerr ("WARNING %s\n", err->message);
if (dbg != NULL)
g_printerr ("WARNING debug information: %s\n", dbg);
g_error_free (err);
g_free (dbg);
break;
}
case GST_MESSAGE_ERROR:{
GError *err;
gchar *dbg;
/* dump graph on error */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (play->playbin),
GST_DEBUG_GRAPH_SHOW_ALL, "gst-play.error");
gst_message_parse_error (msg, &err, &dbg);
g_printerr ("ERROR %s for %s\n", err->message, play->uris[play->cur_idx]);
if (dbg != NULL)
g_printerr ("ERROR debug information: %s\n", dbg);
g_error_free (err);
g_free (dbg);
/* flush any other error messages from the bus and clean up */
gst_element_set_state (play->playbin, GST_STATE_NULL);
if (play->missing != NULL && play_install_missing_plugins (play)) {
g_print ("New plugins installed, trying again...\n");
--play->cur_idx;
play_next (play);
break;
}
/* try next item in list then */
if (!play_next (play)) {
g_print ("Reached end of play list.\n");
g_main_loop_quit (play->loop);
}
break;
}
default:
if (gst_is_missing_plugin_message (msg)) {
gchar *desc;
desc = gst_missing_plugin_message_get_description (msg);
g_print ("Missing plugin: %s\n", desc);
g_free (desc);
play->missing = g_list_append (play->missing, gst_message_ref (msg));
}
break;
}
return TRUE;
}
QGstreamerMessage::QGstreamerMessage(QGstreamerMessage const& m):
m_message(m.m_message)
{
gst_message_ref(m_message);
}
QGstreamerMessage::QGstreamerMessage(GstMessage* message):
m_message(message)
{
gst_message_ref(m_message);
}
Message::Message(GstMessage* message):
m_message(message)
{
gst_message_ref(m_message);
}
Message::Message(Message const& m):
m_message(m.m_message)
{
gst_message_ref(m_message);
}
static GstElement *
gst_auto_video_src_find_best (GstAutoVideoSrc * src)
{
GList *list, *item;
GstElement *choice = NULL;
GstMessage *message = NULL;
GSList *errors = NULL;
GstBus *bus = gst_bus_new ();
GstPad *el_pad = NULL;
GstCaps *el_caps = NULL, *intersect = NULL;
gboolean no_match = TRUE;
list = gst_registry_feature_filter (gst_registry_get_default (),
(GstPluginFeatureFilter) gst_auto_video_src_factory_filter, FALSE, src);
list = g_list_sort (list, (GCompareFunc) gst_auto_video_src_compare_ranks);
GST_LOG_OBJECT (src, "Trying to find usable video devices ...");
for (item = list; item != NULL; item = item->next) {
GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
GstElement *el;
if ((el = gst_auto_video_src_create_element_with_pretty_name (src, f))) {
GstStateChangeReturn ret;
GST_DEBUG_OBJECT (src, "Testing %s", GST_PLUGIN_FEATURE (f)->name);
/* If AutoVideoSrc has been provided with filter caps,
* accept only sources that match with the filter caps */
if (src->filter_caps) {
el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "src");
el_caps = gst_pad_get_caps (el_pad);
gst_object_unref (el_pad);
GST_DEBUG_OBJECT (src,
"Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
src->filter_caps, el_caps);
intersect = gst_caps_intersect (src->filter_caps, el_caps);
no_match = gst_caps_is_empty (intersect);
gst_caps_unref (el_caps);
gst_caps_unref (intersect);
if (no_match) {
GST_DEBUG_OBJECT (src, "Incompatible caps");
gst_object_unref (el);
continue;
} else {
GST_DEBUG_OBJECT (src, "Found compatible caps");
}
}
gst_element_set_bus (el, bus);
ret = gst_element_set_state (el, GST_STATE_READY);
if (ret == GST_STATE_CHANGE_SUCCESS) {
GST_DEBUG_OBJECT (src, "This worked!");
choice = el;
break;
}
/* collect all error messages */
while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
GST_DEBUG_OBJECT (src, "error message %" GST_PTR_FORMAT, message);
errors = g_slist_append (errors, message);
}
gst_element_set_state (el, GST_STATE_NULL);
gst_object_unref (el);
}
}
GST_DEBUG_OBJECT (src, "done trying");
if (!choice) {
if (errors) {
/* FIXME: we forward the first error for now; but later on it might make
* sense to actually analyse them */
gst_message_ref (GST_MESSAGE (errors->data));
GST_DEBUG_OBJECT (src, "reposting message %p", errors->data);
gst_element_post_message (GST_ELEMENT (src), GST_MESSAGE (errors->data));
} else {
/* send warning message to application and use a fakesrc */
GST_ELEMENT_WARNING (src, RESOURCE, NOT_FOUND, (NULL),
("Failed to find a usable video source"));
choice = gst_element_factory_make ("fakesrc", "fake-video-src");
if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
g_object_set (choice, "sync", TRUE, NULL);
gst_element_set_state (choice, GST_STATE_READY);
}
}
gst_object_unref (bus);
gst_plugin_feature_list_free (list);
g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
g_slist_free (errors);
return choice;
}
Message::Message(const Message &other)
{
m_message = other.m_message;
gst_message_ref(m_message);
m_source = other.m_source;
}
static gpointer _gst_message_ref0 (gpointer self) {
return self ? gst_message_ref (self) : NULL;
}
static void
gst_net_client_internal_clock_observe_times (GstNetClientInternalClock * self,
GstClockTime local_1, GstClockTime remote_1, GstClockTime remote_2,
GstClockTime local_2)
{
GstClockTime current_timeout = 0;
GstClockTime local_avg, remote_avg;
gdouble r_squared;
GstClock *clock;
GstClockTime rtt, rtt_limit, min_update_interval;
/* Use for discont tracking */
GstClockTime time_before = 0;
GstClockTime min_guess = 0;
GstClockTimeDiff time_discont = 0;
gboolean synched, now_synched;
GstClockTime internal_time, external_time, rate_num, rate_den;
GstClockTime orig_internal_time, orig_external_time, orig_rate_num,
orig_rate_den;
GstClockTime max_discont;
GstClockTime last_rtts[MEDIAN_PRE_FILTERING_WINDOW];
GstClockTime median;
gint i;
GST_OBJECT_LOCK (self);
rtt_limit = self->roundtrip_limit;
GST_LOG_OBJECT (self,
"local1 %" G_GUINT64_FORMAT " remote1 %" G_GUINT64_FORMAT " remote2 %"
G_GUINT64_FORMAT " local2 %" G_GUINT64_FORMAT, local_1, remote_1,
remote_2, local_2);
/* If the server told us a poll interval and it's bigger than the
* one configured via the property, use the server's */
if (self->last_remote_poll_interval != GST_CLOCK_TIME_NONE &&
self->last_remote_poll_interval > self->minimum_update_interval)
min_update_interval = self->last_remote_poll_interval;
else
min_update_interval = self->minimum_update_interval;
GST_OBJECT_UNLOCK (self);
if (local_2 < local_1) {
GST_LOG_OBJECT (self, "Dropping observation: receive time %" GST_TIME_FORMAT
" < send time %" GST_TIME_FORMAT, GST_TIME_ARGS (local_1),
GST_TIME_ARGS (local_2));
goto bogus_observation;
}
if (remote_2 < remote_1) {
GST_LOG_OBJECT (self,
"Dropping observation: remote receive time %" GST_TIME_FORMAT
" < send time %" GST_TIME_FORMAT, GST_TIME_ARGS (remote_1),
GST_TIME_ARGS (remote_2));
goto bogus_observation;
}
/* The round trip time is (assuming symmetric path delays)
* delta = (local_2 - local_1) - (remote_2 - remote_1)
*/
rtt = GST_CLOCK_DIFF (local_1, local_2) - GST_CLOCK_DIFF (remote_1, remote_2);
if ((rtt_limit > 0) && (rtt > rtt_limit)) {
GST_LOG_OBJECT (self,
"Dropping observation: RTT %" GST_TIME_FORMAT " > limit %"
GST_TIME_FORMAT, GST_TIME_ARGS (rtt), GST_TIME_ARGS (rtt_limit));
goto bogus_observation;
}
for (i = 1; i < MEDIAN_PRE_FILTERING_WINDOW; i++)
self->last_rtts[i - 1] = self->last_rtts[i];
self->last_rtts[i - 1] = rtt;
if (self->last_rtts_missing) {
self->last_rtts_missing--;
} else {
memcpy (&last_rtts, &self->last_rtts, sizeof (last_rtts));
g_qsort_with_data (&last_rtts,
MEDIAN_PRE_FILTERING_WINDOW, sizeof (GstClockTime),
(GCompareDataFunc) compare_clock_time, NULL);
median = last_rtts[MEDIAN_PRE_FILTERING_WINDOW / 2];
/* FIXME: We might want to use something else here, like only allowing
* things in the interquartile range, or also filtering away delays that
* are too small compared to the median. This here worked well enough
* in tests so far.
*/
if (rtt > 2 * median) {
GST_LOG_OBJECT (self,
"Dropping observation, long RTT %" GST_TIME_FORMAT " > 2 * median %"
GST_TIME_FORMAT, GST_TIME_ARGS (rtt), GST_TIME_ARGS (median));
goto bogus_observation;
}
}
/* Track an average round trip time, for a bit of smoothing */
/* Always update before discarding a sample, so genuine changes in
* the network get picked up, eventually */
if (self->rtt_avg == GST_CLOCK_TIME_NONE)
self->rtt_avg = rtt;
else if (rtt < self->rtt_avg) /* Shorter RTTs carry more weight than longer */
self->rtt_avg = (3 * self->rtt_avg + rtt) / 4;
else
self->rtt_avg = (15 * self->rtt_avg + rtt) / 16;
if (rtt > 2 * self->rtt_avg) {
GST_LOG_OBJECT (self,
"Dropping observation, long RTT %" GST_TIME_FORMAT " > 2 * avg %"
GST_TIME_FORMAT, GST_TIME_ARGS (rtt), GST_TIME_ARGS (self->rtt_avg));
goto bogus_observation;
}
/* The difference between the local and remote clock (again assuming
* symmetric path delays):
*
* local_1 + delta / 2 - remote_1 = theta
* or
* local_2 - delta / 2 - remote_2 = theta
*
* which gives after some simple algebraic transformations:
*
* (remote_1 - local_1) + (remote_2 - local_2)
* theta = -------------------------------------------
* 2
*
*
* Thus remote time at local_avg is equal to:
*
* local_avg + theta =
*
* local_1 + local_2 (remote_1 - local_1) + (remote_2 - local_2)
* ----------------- + -------------------------------------------
* 2 2
*
* =
*
* remote_1 + remote_2
* ------------------- = remote_avg
* 2
*
* We use this for our clock estimation, i.e. local_avg at remote clock
* being the same as remote_avg.
*/
local_avg = (local_2 + local_1) / 2;
remote_avg = (remote_2 + remote_1) / 2;
GST_LOG_OBJECT (self,
"remoteavg %" G_GUINT64_FORMAT " localavg %" G_GUINT64_FORMAT,
remote_avg, local_avg);
clock = GST_CLOCK_CAST (self);
/* Store what the clock produced as 'now' before this update */
gst_clock_get_calibration (GST_CLOCK_CAST (self), &orig_internal_time,
&orig_external_time, &orig_rate_num, &orig_rate_den);
internal_time = orig_internal_time;
external_time = orig_external_time;
rate_num = orig_rate_num;
rate_den = orig_rate_den;
min_guess =
gst_clock_adjust_with_calibration (GST_CLOCK_CAST (self), local_1,
internal_time, external_time, rate_num, rate_den);
time_before =
gst_clock_adjust_with_calibration (GST_CLOCK_CAST (self), local_2,
internal_time, external_time, rate_num, rate_den);
/* Maximum discontinuity, when we're synched with the master. Could make this a property,
* but this value seems to work fine */
max_discont = self->rtt_avg / 4;
/* If the remote observation was within a max_discont window around our min/max estimates, we're synched */
synched =
(GST_CLOCK_DIFF (remote_avg, min_guess) < (GstClockTimeDiff) (max_discont)
&& GST_CLOCK_DIFF (time_before,
remote_avg) < (GstClockTimeDiff) (max_discont));
if (gst_clock_add_observation_unapplied (GST_CLOCK_CAST (self),
local_avg, remote_avg, &r_squared, &internal_time, &external_time,
&rate_num, &rate_den)) {
/* Now compare the difference (discont) in the clock
* after this observation */
time_discont = GST_CLOCK_DIFF (time_before,
gst_clock_adjust_with_calibration (GST_CLOCK_CAST (self), local_2,
internal_time, external_time, rate_num, rate_den));
/* If we were in sync with the remote clock, clamp the allowed
* discontinuity to within quarter of one RTT. In sync means our send/receive estimates
* of remote time correctly windowed the actual remote time observation */
if (synched && ABS (time_discont) > max_discont) {
GstClockTimeDiff offset;
GST_DEBUG_OBJECT (clock,
"Too large a discont, clamping to 1/4 average RTT = %"
GST_TIME_FORMAT, GST_TIME_ARGS (max_discont));
if (time_discont > 0) { /* Too large a forward step - add a -ve offset */
offset = max_discont - time_discont;
if (-offset > external_time)
external_time = 0;
else
external_time += offset;
} else { /* Too large a backward step - add a +ve offset */
offset = -(max_discont + time_discont);
external_time += offset;
}
time_discont += offset;
}
/* Check if the new clock params would have made our observation within range */
now_synched =
(GST_CLOCK_DIFF (remote_avg,
gst_clock_adjust_with_calibration (GST_CLOCK_CAST (self),
local_1, internal_time, external_time, rate_num,
rate_den)) < (GstClockTimeDiff) (max_discont))
&&
(GST_CLOCK_DIFF (gst_clock_adjust_with_calibration
(GST_CLOCK_CAST (self), local_2, internal_time, external_time,
rate_num, rate_den),
remote_avg) < (GstClockTimeDiff) (max_discont));
/* Only update the clock if we had synch or just gained it */
if (synched || now_synched || self->skipped_updates > MAX_SKIPPED_UPDATES) {
gst_clock_set_calibration (GST_CLOCK_CAST (self), internal_time,
external_time, rate_num, rate_den);
/* ghetto formula - shorter timeout for bad correlations */
current_timeout = (1e-3 / (1 - MIN (r_squared, 0.99999))) * GST_SECOND;
current_timeout =
MIN (current_timeout, gst_clock_get_timeout (GST_CLOCK_CAST (self)));
self->skipped_updates = 0;
/* FIXME: When do we consider the clock absolutely not synced anymore? */
gst_clock_set_synced (GST_CLOCK (self), TRUE);
} else {
/* Restore original calibration vars for the report, we're not changing the clock */
internal_time = orig_internal_time;
external_time = orig_external_time;
rate_num = orig_rate_num;
rate_den = orig_rate_den;
time_discont = 0;
self->skipped_updates++;
}
}
/* Limit the polling to at most one per minimum_update_interval */
if (rtt < min_update_interval)
current_timeout = MAX (min_update_interval - rtt, current_timeout);
GST_OBJECT_LOCK (self);
if (self->busses) {
GstStructure *s;
GstMessage *msg;
GList *l;
/* Output a stats message, whether we updated the clock or not */
s = gst_structure_new ("gst-netclock-statistics",
"synchronised", G_TYPE_BOOLEAN, synched,
"rtt", G_TYPE_UINT64, rtt,
"rtt-average", G_TYPE_UINT64, self->rtt_avg,
"local", G_TYPE_UINT64, local_avg,
"remote", G_TYPE_UINT64, remote_avg,
"discontinuity", G_TYPE_INT64, time_discont,
"remote-min-estimate", G_TYPE_UINT64, min_guess,
"remote-max-estimate", G_TYPE_UINT64, time_before,
"remote-min-error", G_TYPE_INT64, GST_CLOCK_DIFF (remote_avg,
min_guess), "remote-max-error", G_TYPE_INT64,
GST_CLOCK_DIFF (remote_avg, time_before), "request-send", G_TYPE_UINT64,
local_1, "request-receive", G_TYPE_UINT64, local_2, "r-squared",
G_TYPE_DOUBLE, r_squared, "timeout", G_TYPE_UINT64, current_timeout,
"internal-time", G_TYPE_UINT64, internal_time, "external-time",
G_TYPE_UINT64, external_time, "rate-num", G_TYPE_UINT64, rate_num,
"rate-den", G_TYPE_UINT64, rate_den, "rate", G_TYPE_DOUBLE,
(gdouble) (rate_num) / rate_den, "local-clock-offset", G_TYPE_INT64,
GST_CLOCK_DIFF (internal_time, external_time), NULL);
msg = gst_message_new_element (GST_OBJECT (self), s);
for (l = self->busses; l; l = l->next)
gst_bus_post (l->data, gst_message_ref (msg));
gst_message_unref (msg);
}
GST_OBJECT_UNLOCK (self);
GST_INFO ("next timeout: %" GST_TIME_FORMAT, GST_TIME_ARGS (current_timeout));
self->timeout_expiration = gst_util_get_timestamp () + current_timeout;
return;
bogus_observation:
/* Schedule a new packet again soon */
self->timeout_expiration = gst_util_get_timestamp () + (GST_SECOND / 4);
return;
}
static GstElement *
gst_auto_audio_sink_find_best (GstAutoAudioSink * sink)
{
GList *list, *item;
GstElement *choice = NULL;
GstMessage *message = NULL;
GSList *errors = NULL;
GstBus *bus = gst_bus_new ();
GstPad *el_pad = NULL;
GstCaps *el_caps = NULL;
gboolean no_match = TRUE;
list = gst_registry_feature_filter (gst_registry_get (),
(GstPluginFeatureFilter) gst_auto_audio_sink_factory_filter, FALSE, sink);
list = g_list_sort (list, (GCompareFunc) gst_auto_audio_sink_compare_ranks);
/* We don't treat sound server sinks special. Our policy is that sound
* server sinks that have a rank must not auto-spawn a daemon under any
* circumstances, so there's nothing for us to worry about here */
GST_LOG_OBJECT (sink, "Trying to find usable audio devices ...");
for (item = list; item != NULL; item = item->next) {
GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
GstElement *el;
if ((el = gst_auto_audio_sink_create_element_with_pretty_name (sink, f))) {
GstStateChangeReturn ret;
GST_DEBUG_OBJECT (sink, "Testing %s", GST_OBJECT_NAME (f));
/* If autoaudiosink has been provided with filter caps,
* accept only sinks that match with the filter caps */
if (sink->filter_caps) {
el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "sink");
el_caps = gst_pad_query_caps (el_pad, NULL);
gst_object_unref (el_pad);
GST_DEBUG_OBJECT (sink,
"Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
sink->filter_caps, el_caps);
no_match = !gst_caps_can_intersect (sink->filter_caps, el_caps);
gst_caps_unref (el_caps);
if (no_match) {
GST_DEBUG_OBJECT (sink, "Incompatible caps");
gst_object_unref (el);
continue;
} else {
GST_DEBUG_OBJECT (sink, "Found compatible caps");
}
}
gst_element_set_bus (el, bus);
ret = gst_element_set_state (el, GST_STATE_READY);
if (ret == GST_STATE_CHANGE_SUCCESS) {
GST_DEBUG_OBJECT (sink, "This worked!");
choice = el;
break;
}
/* collect all error messages */
while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
GST_DEBUG_OBJECT (sink, "error message %" GST_PTR_FORMAT, message);
errors = g_slist_append (errors, message);
}
gst_element_set_state (el, GST_STATE_NULL);
gst_object_unref (el);
}
}
GST_DEBUG_OBJECT (sink, "done trying");
if (!choice) {
if (errors) {
/* FIXME: we forward the first error for now; but later on it might make
* sense to actually analyse them */
gst_message_ref (GST_MESSAGE (errors->data));
GST_DEBUG_OBJECT (sink, "reposting message %p", errors->data);
gst_element_post_message (GST_ELEMENT (sink), GST_MESSAGE (errors->data));
} else {
/* send warning message to application and use a fakesink */
GST_ELEMENT_WARNING (sink, RESOURCE, NOT_FOUND, (NULL),
("Failed to find a usable audio sink"));
choice = gst_element_factory_make ("fakesink", "fake-audio-sink");
if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
g_object_set (choice, "sync", TRUE, NULL);
gst_element_set_state (choice, GST_STATE_READY);
}
}
gst_object_unref (bus);
gst_plugin_feature_list_free (list);
g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
g_slist_free (errors);
return choice;
}