public TimelineTrackingInfo(int timelindeIndex, long startTimeStampHNS, long endTimeStampHNS, TimelineTrackingInfo previousTimelineInfo)
{
currentTimelineIndex = timelindeIndex;
timelineStartTimeStampHNS = startTimeStampHNS;
timelineEndTimeStampHNS = endTimeStampHNS;
previousTimeline = previousTimelineInfo;
}
public void EstablishTimeline(List<TimeLineInfo> timelineInfoList)
{
lock (this)
{
_timelineInfoList = timelineInfoList;
_timelineTrackingInfo = null;
}
}
/// <summary>
/// Produces next sample to play.
/// </summary>
/// <returns></returns>
private Sample DequeueSample()
{
Sample sample = null;
lock (this)
{
if (_samples.Count == 0)
return null;
sample = _samples.Dequeue();
_totalSizeOfSamples -= (int)sample.DataStream.Length;
_bufferLevel -= sample.Duration;
if (sample == _lastSample)
_lastSample = null;
HLSTrace.WriteLineLow("DequeueSample from {0} to {1} timeline {2}", sample.Timestamp / ConvertHelper.MSInHNS, sample.AdjustedTimeStamp / ConvertHelper.MSInHNS, sample.TimelineIndex);
if (null == _timelineTrackingInfo)
{
_timelineTrackingInfo = new TimelineTrackingInfo(sample.TimelineIndex, sample.AdjustedTimeStamp, sample.AdjustedTimeStamp, null);
}
else
{
if (sample.TimelineIndex != _timelineTrackingInfo.currentTimelineIndex)
{
_timelineTrackingInfo.previousTimeline = new TimelineTrackingInfo(_timelineTrackingInfo.currentTimelineIndex, _timelineTrackingInfo.timelineStartTimeStampHNS, _timelineTrackingInfo.timelineEndTimeStampHNS, null);
_timelineTrackingInfo.currentTimelineIndex = sample.TimelineIndex;
_timelineTrackingInfo.timelineStartTimeStampHNS = sample.AdjustedTimeStamp;
_timelineTrackingInfo.timelineEndTimeStampHNS = sample.AdjustedTimeStamp;
}
else
{
_timelineTrackingInfo.timelineEndTimeStampHNS = sample.AdjustedTimeStamp;
}
}
}
return sample;
}
/// <summary>
/// Adds a new sample to the buffer.
/// </summary>
/// <param name="sample"></param>
public void Enqueue(Sample sample)
{
lock (this)
{
Debug.Assert(_timelineInfoList.Count > sample.TimelineIndex);
if (-1 == _timelineInfoList[sample.TimelineIndex]._timelineStartOffsetHNS)
{
sample.AdjustedTimeStamp = sample.Timestamp;
}
else
{
if (-1 == _timelineInfoList[sample.TimelineIndex]._timelineStartTimeStamp)
{
_timelineInfoList[sample.TimelineIndex]._timelineStartTimeStamp = sample.Timestamp;
sample.AdjustedTimeStamp = _timelineInfoList[sample.TimelineIndex]._timelineStartOffsetHNS;
}
else
{
sample.AdjustedTimeStamp = sample.Timestamp - _timelineInfoList[sample.TimelineIndex]._timelineStartTimeStamp + _timelineInfoList[sample.TimelineIndex]._timelineStartOffsetHNS;
}
}
if (null == _timelineTrackingInfo)
{
_timelineTrackingInfo = new TimelineTrackingInfo(sample.TimelineIndex, sample.AdjustedTimeStamp, sample.AdjustedTimeStamp, null);
}
_timelineTrackingInfo.lastTimeStamp = sample.Timestamp;
_timelineTrackingInfo.lastAdjustedTimeStamp = sample.AdjustedTimeStamp;
_samples.Enqueue(sample);
_totalSizeOfSamples += (int)sample.DataStream.Length;
_bufferLevel += sample.Duration;
_lastSample = sample;
if (_hnsSegmentStart == -1 )
{
_hnsSegmentStart = sample.AdjustedTimeStamp;
}
SegmentProgramDateTime segmentTime =sample.HLSStream.SegmentProgramTime;
if ( segmentTime!= null && segmentTime.programTime.TsStartTime == DateTime.MinValue)
{
segmentTime.programTime.TsStartTime = segmentTime.programTime.startTime + segmentTime.offset - TimeSpan.FromTicks(sample.AdjustedTimeStamp);
}
}
HLSTrace.WriteLineLow("Enqueue sample timestamp {0} adjust to {1}, size {2}, timeline {3}", sample.Timestamp / ConvertHelper.MSInHNS, sample.AdjustedTimeStamp / ConvertHelper.MSInHNS, sample.DataStream.Length, sample.TimelineIndex);
}
