public static MidiThruConnection[] Find(string persistentOwnerID, out MidiError error)
{
if (persistentOwnerID == null)
{
throw new ArgumentNullException(nameof(persistentOwnerID));
}
IntPtr ret;
using (var nssstr = new NSString(persistentOwnerID)) {
error = MIDIThruConnectionFind(nssstr.Handle, out ret);
}
using (var data = Runtime.GetNSObject <NSData> (ret)) {
var typeSize = Marshal.SizeOf(typeof(MidiThruConnectionRef));
var totalObjs = (int)data.Length / typeSize;
if (totalObjs == 0)
{
return(null);
}
var basePtr = data.Bytes.ToInt32();
var connections = new MidiThruConnection[totalObjs];
for (int i = 0; i < totalObjs; i++)
{
connections[i] = new MidiThruConnection((uint)(basePtr + i * typeSize));
}
return(connections);
}
}
public static MidiThruConnection[]? Find(string persistentOwnerID, out MidiError error)
{
if (persistentOwnerID is null)
{
throw new ArgumentNullException(nameof(persistentOwnerID));
}
IntPtr ret;
var persistentOwnerIDHandle = CFString.CreateNative(persistentOwnerID);
try {
error = MIDIThruConnectionFind(persistentOwnerIDHandle, out ret);
} finally {
CFString.ReleaseNative(persistentOwnerIDHandle);
}
using (var data = Runtime.GetNSObject <NSData> (ret)) {
if (data is null)
{
return(null);
}
var typeSize = Marshal.SizeOf(typeof(MidiThruConnectionRef));
var totalObjs = (int)data.Length / typeSize;
if (totalObjs == 0)
{
return(null);
}
var connections = new MidiThruConnection[totalObjs];
unsafe {
uint *handles = (uint *)(IntPtr)data.Bytes;
for (int i = 0; i < totalObjs; i++)
{
connections [i] = new MidiThruConnection(handles [i]);
}
}
return(connections);
}
}
