public bool Start(SoundSource music, int startTick, HashSet <int> ticks, IEnumerable <BPMChangeEvent> bpms)
{
if (Playing)
{
throw new InvalidOperationException();
}
if (music == null)
{
throw new ArgumentNullException("music");
}
if (IsStopAtLastNote && ticks.Count == 0)
{
return(false);
}
SoundManager.Register(ClapSource.FilePath);
SoundManager.Register(music.FilePath);
EndTick = IsStopAtLastNote ? ticks.Max() : GetTickFromTime(SoundManager.GetDuration(music.FilePath), bpms);
if (EndTick < startTick)
{
return(false);
}
TickElement = new LinkedList <int>(ticks.Where(p => p >= startTick).OrderBy(p => p)).First;
BPMElement = new LinkedList <BPMChangeEvent>(bpms.OrderBy(p => p.Tick)).First;
// スタート時まで進める
while (TickElement != null && TickElement.Value < startTick)
{
TickElement = TickElement.Next;
}
while (BPMElement.Next != null && BPMElement.Next.Value.Tick <= startTick)
{
BPMElement = BPMElement.Next;
}
int clapLatencyTick = GetLatencyTick(ClapSource.Latency, (double)BPMElement.Value.BPM);
InitialTick = startTick - clapLatencyTick;
CurrentTick = InitialTick;
StartTick = startTick;
TimeSpan startTime = GetTimeFromTick(startTick, bpms);
TimeSpan headGap = TimeSpan.FromSeconds(-music.Latency) - startTime;
ElapsedTick = 0;
Task.Run(() =>
{
LastSystemTick = Environment.TickCount;
SyncObject.Invoke((MethodInvoker)(() => Timer.Start()));
System.Threading.Thread.Sleep(TimeSpan.FromSeconds(Math.Max(ClapSource.Latency, 0)));
if (headGap.TotalSeconds > 0)
{
System.Threading.Thread.Sleep(headGap);
}
if (!Playing)
{
return; // 音源再生前に停止されたら取り消す
}
SoundManager.Play(music.FilePath, startTime + TimeSpan.FromSeconds(music.Latency));
});
Playing = true;
return(true);
}
public static bool Start(this SoundPreviewManager manager, Score score, SoundSource source, int startTick, bool onlyNotes)
{
return(manager.Start(source, startTick, score.GetGuideTicks(onlyNotes), score.Events.BPMChangeEvents));
}