public static MusicTrack FromSequence(MusicSequence sequence)
{
if (sequence == null)
{
throw new ArgumentNullException("sequence");
}
return(sequence.CreateTrack());
}
public static MusicTrack?FromSequence(MusicSequence sequence)
{
if (sequence is null)
{
ObjCRuntime.ThrowHelper.ThrowArgumentNullException(nameof(sequence));
}
return(sequence.CreateTrack());
}
public static MusicTrack?FromSequence(MusicSequence sequence)
{
if (sequence is null)
{
throw new ArgumentNullException(nameof(sequence));
}
return(sequence.CreateTrack());
}
protected virtual void Dispose(bool disposing)
{
if (handle != IntPtr.Zero)
{
if (owns)
{
MusicSequenceDisposeTrack(sequence.Handle, handle);
}
handle = IntPtr.Zero;
}
sequence = null;
}
static void UserCallbackProxy(IntPtr inClientData, IntPtr inSequence, IntPtr inTrack, double inEventTime, IntPtr inEventData, double inStartSliceBeat, double inEndSliceBeat)
{
MusicSequenceUserCallback userCallback;
lock (userCallbackHandles)
userCallbackHandles.TryGetValue(inSequence, out userCallback);
if (userCallback != null)
{
var userEventData = new MusicEventUserData(inEventData);
var musicSequence = MusicSequence.Lookup(inSequence);
var musicTrack = new MusicTrack(musicSequence, inTrack, false);
userCallback(musicTrack, inEventTime, userEventData, inStartSliceBeat, inEndSliceBeat);
}
}
internal static MusicSequence Lookup(IntPtr handle)
{
lock (sequenceMap){
if (sequenceMap.TryGetValue(handle, out var weakRef))
{
var target = weakRef.Target;
if (target is not null)
{
return((MusicSequence)target);
}
sequenceMap.Remove(handle);
}
var ms = new MusicSequence(handle, false);
sequenceMap [handle] = new WeakReference(ms);
return(ms);
}
}
internal MusicTrack(MusicSequence sequence, IntPtr handle, bool owns)
{
this.sequence = sequence;
this.handle = handle;
this.owns = owns;
}
internal MusicTrack(MusicSequence sequence, IntPtr handle, bool owns)
: base(handle, owns)
{
this.sequence = sequence;
}