Order of playback events

TVSDK dispatches events/notifications in generally expected sequences. Your player can implement actions based on events in the expected sequence.

The following examples show the order of some events that include playback events.

• When successfully loading a media resource through MediaPlayer.replaceCurrentResource, the order of events is:

  • MediaPlayerStatusChangeEvent.STATUS_CHANGED with status MediaPlayerStatus.INITIALIZING

  • MediaPlayerItemEvent.ITEM_CREATED

  • MediaPlayerStatusChangeEvent.STATUS_CHANGED with status MediaPlayerStatus.INITIALIZED

• When preparing for playback through MediaPlayer.prepareToPlay, the order of events is:

  • MediaPlayerStatusChangeEvent.STATUS_CHANGED with status MediaPlayerStatus.PREPARING

  • TimelineEvent.TIMELINE_UPDATED if ads were inserted

  • MediaPlayerStatusChangeEvent.STATUS_CHANGED with status MediaPlayerStatus.PREPARED

• For live/linear streams, during playback as the playback window advances and additional opportunities are resolved, the order of events is:

  • MediaPlayerItemEvent.ITEM_UPDATED
  • TimelineEvent.TIMELINE_UPDATED if ads were inserted

The following example shows a typical progression of events:

mediaPlayer.addEventListener(MediaPlayerItemEvent.ITEM_CREATED, onItemCreated);
public function onItemCreated(event:MediaPlayerItemEvent):void {
    var item:MediaPlayerItem = event.item;
    ...
}
mediaPlayer.addEventListener(MediaPlayerItemEvent.ITEM_UPDATED, onItemUpdated);
public function onItemUpdated(event:MediaPlayerItemEvent):void {
    var item:MediaPlayerItem = event.item;
    ...
}
mediaPlayer.addEventListener(MediaPlayerStatusChangeEvent.STATUS_CHANGED,
                             onStatusChanged);
public function onStatusChanged(event:MediaPlayerStatusChangeEvent):void {
    switch(event.status){
        case MediaPlayerStatus.INITIALIZING:
        case MediaPlayerStatus.INITIALIZED:
        ...
    }
    ...
}
mediaPlayer.addEventListener(TimeChangeEvent.TIME_CHANGED, onTimeChanged);
public function onTimeChanged(event:TimeChangeEvent):void {
    var timeInMilliseconds:Number = event.time;
    ...
}