public void PlayPreview(QNT_Timestamp time, Relative_QNT previewDuration)
{
float midTime = timeline.TimestampToSeconds(time);
float duration = (float)Conversion.FromQNT(new Relative_QNT(Math.Abs(previewDuration.tick)), timeline.GetTempoForTime(time).microsecondsPerQuarterNote);
duration = Math.Min(duration, 0.1f);
UInt64 sampleStart = (UInt64)((midTime - duration / 2) * song.frequency);
UInt64 sampleEnd = (UInt64)((midTime + duration / 2) * song.frequency);
preview.currentSample = sampleStart << ClipData.PrecisionShift;
currentPreviewSongSampleEnd = sampleEnd << ClipData.PrecisionShift;
playPreview = true;
source.Play();
List <HitsoundEvent> previewHits = new List <HitsoundEvent>();
AddHitsoundEvents(previewHits, time, previewDuration.tick > 0 ? timeline.ShiftTick(time, duration) : time);
for (int i = 0; i < previewHits.Count; ++i)
{
HitsoundEvent ev = previewHits[i];
ev.waitSamples = 0;
previewHits[i] = ev;
}
newPreviewHitsoundEvents = previewHits;
}
public static double FromQNT(Relative_QNT duration, UInt64 microsecondsPerQuarterNote)
{
return((duration.tick * (long)microsecondsPerQuarterNote) / ((double)Constants.SecondsToMicroseconds * Constants.PulsesPerQuarterNote));
}
public int CompareTo(Relative_QNT other)
{
return(tick.CompareTo(other.tick));
}