public function notifyDiff(SSLHistoryDiffDom $dom)
{
$tracks = $dom->getTracks();
foreach ($tracks as $track) {
if ($track->isPlayed()) {
$this->notifyScrobbleObservers($track);
}
}
}
/**
* Notify the deck of a group of changes written to the History File.
*
* SSL batches writes of track info, but doesn't output them in the
* natural transition order - that is, sometimes information about the following
* song appears in the log before closing info on the previous song, as the
* History File is track oriented, not deck oriented.
*
* During notify(), we reorder this information into an order that's
* transition compatible (that is, row ID ascending order).
*
* The implication of sending a bunch of track notifications together (rather
* than one by one) is that they happen simultaneously, and the end result
* is what's important rather than every step to get there.
*
* As diffs usually only come during track load, change or eject, it would be
* abnormal to see information about more than 2 tracks on a single deck here,
* and abnormal for neither of them to be the one currently on the deck.
*
* However, it can happen - for example, loading a historical file or starting
* the monitor half way through a session.
*
* @param SSLHistoryDiffDom $diff
*/
public function notify(SSLHistoryDiffDom $diff)
{
$this->resetFlags();
$starting_track = $this->track;
if (isset($starting_track)) {
$starting_track_row = $starting_track->getRow();
}
// filter out tracks that are not for this deck, or that are too old
$my_tracks = array();
foreach ($diff->getTracks() as $track) {
/* @var $track SSLTrack */
if ($track->getDeck() == $this->deck_number && $track->getRow() >= $this->max_row) {
// track notification for this deck!
$my_tracks[$track->getRow()] = $track;
L::level(L::DEBUG) && L::log(L::DEBUG, __CLASS__, "Saw %s in diff (row %s)", array($track->getTitle(), $track->getRow()));
}
}
// sort into natural 'history' order (that is, by row ID ascending)
ksort($my_tracks);
foreach ($my_tracks as $track) {
try {
$this->transitionTo($track);
} catch (SSLInvalidTransitionException $e) {
L::level(L::WARNING) && L::log(L::WARNING, __CLASS__, "Invalid Transition: %s", array($e->getMessage()));
}
}
// set status flags
if ($this->track && (!$starting_track || $this->track->getRow() != $starting_track_row)) {
// There is now a track where there was none.
$this->track_started = $this->track;
}
if ($starting_track && (!$this->track || $this->track->getRow() != $starting_track_row)) {
// There is now no track where there was one.
// Make sure we're using the newest track object from the file.
// If we've changed file since the last playing track (i.e. End Session or
// Serato restart) then this won't exist.
if (isset($my_tracks[$starting_track->getRow()])) {
$this->track_stopped = $my_tracks[$starting_track->getRow()];
}
}
if ($this->track && $starting_track && $this->track->getRow() == $starting_track_row && $this->track !== $starting_track) {
// The track on the deck is the same as before, but the object has been replaced.
// (We signal this as an update on the principle that there's absolutely no reason
// that SSL would log the same row twice unless there was new information in the new
// row).
$this->track_updated = $this->track;
}
}
/**
* Update model information based on changes to the SSL History.
*
* @param SSLHistoryDiffDom $diff
*/
public function notifyDiff(SSLHistoryDiffDom $diff)
{
foreach ($diff->getTracks() as $track) {
/* @var $track SSLTrack */
// create track deck on demand
$this->getDeck($track->getDeck());
}
$events = array();
foreach ($this->decks as $deck_number => $deck) {
/* @var $deck SSLRealtimeModelDeck */
$deck->notify($diff);
$stopped_track = $deck->trackStopped();
if ($stopped_track) {
$events[] = $this->factory->newTrackStoppedEvent($stopped_track);
}
$started_track = $deck->trackStarted();
if ($started_track) {
$events[] = $this->factory->newTrackStartedEvent($started_track);
}
$updated_track = $deck->trackUpdated();
if ($updated_track) {
$events[] = $this->factory->newTrackUpdatedEvent($updated_track);
}
}
if (count($events)) {
$events = $this->factory->newTrackChangeEventList($events);
L::level(L::DEBUG) && L::log(L::DEBUG, __CLASS__, "notifying %s", array($events));
$this->notifyTrackChangeObservers($events);
}
}
