/// <summary>
/// Called when playlist file has been loaded and parsed. This implementation selects a program,
/// creates a playback wrapper and asynchronously requests first stream to play.
/// </summary>
private void Playlist_PlaylistReady(object sender)
{
// DoCloseMedia may happend before the PlaylistReady event fired.
if (_playlist == null) return;
if (_program == null)
_program = _playlist.Programs[0];
if (_playback == null)
_playback = new HLSPlayback(_program, (IVariantSelector)this);
lock (_playback)
{
if (_openParam.isDownloadAllSubPlayList || null != _playlistOverrideEvent)
{
_playback.OnStartLoadingSubPlayList(_program.Variants.Count);
_playback.AllSubPlayListEvent += OnAllSubPlayListLoaded;
foreach (HLSVariant hlsVariant in _program.Variants)
{
hlsVariant.Playback = _playback;
hlsVariant.Load();
}
}
else
{
OnAllSubPlayListLoaded();
}
}
}
private bool OverridePlaylistIfNecessary(PlayListOverrideInfo overrideInfo)
{
bool isOverrided = false;
if (null != _playlistOverrideEvent)
{
HLSExternalPlayListImpl externalPlayLsit = new HLSExternalPlayListImpl();
if (overrideInfo.reason == PlayListOverrideReason.ePlaylistLoaded)
{
externalPlayLsit.FromHLSPlaylist(_playlist);
}
if (_playlistOverrideEvent(externalPlayLsit, overrideInfo))
{
isOverrided = true;
_playlist.FromHLSExternalPlaylist(externalPlayLsit);
lock (_playback)
{
_program = _playlist.Programs[0];
_playback.Program = _program;
_playback.ResetPlayback(_program, _playlist.PlaylistDuration);
List<SampleBuffer.TimeLineInfo> timelineInfoList = new List<SampleBuffer.TimeLineInfo>();
foreach (TimelineEstablishInfo establishInfo in externalPlayLsit.timelineEstablishInfoList)
{
timelineInfoList.Add(new SampleBuffer.TimeLineInfo(establishInfo.timelineStartOffset.Ticks, establishInfo.isMonoIncrease));
}
_videoBuffer.EstablishTimeline(timelineInfoList);
_audioBuffer.EstablishTimeline(timelineInfoList);
}
}
}
if (!isOverrided && overrideInfo.reason == PlayListOverrideReason.ePlaylistLoaded)
{
List<SampleBuffer.TimeLineInfo> timelineInfoList = new List<SampleBuffer.TimeLineInfo>();
timelineInfoList.Add(new SampleBuffer.TimeLineInfo(0, false));
_videoBuffer.EstablishTimeline(timelineInfoList);
_audioBuffer.EstablishTimeline(timelineInfoList);
}
_playlistOverrided = isOverrided;
return isOverrided;
}
public void ResetPlayback(HLSProgram program, TimeSpan duration)
{
_program = program;
_playlist = null;
_duration = duration;
_currentPosition = 0;
}
/// <summary>
/// Handler for Close command
/// </summary>
private void DoCloseMedia()
{
lock (_workQueueThreadLock)
{
HLSTrace.WriteLine("DoCloseMedia");
_bwHistory.Close();
_playback.AbortStreamDownloads();
_isWorkQueueThreadStarted = false;
_workQueueThread = null;
_workQueue = null;
_audioBuffer = null;
_videoBuffer = null;
_playlist = null;
_playback = null;
_program = null;
if (_demux != null)
{
_demux.Dispose();
_demux = null;
}
}
}
/// <summary>
/// Number of times we have already retried downloading the current stream
/// but have failed with a WebException
/// /// </summary>
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="program"></param>
public HLSPlayback(HLSProgram program, IVariantSelector heuristics )
{
_program = program;
_heuristics = heuristics;
}
