#region License
/* Copyright (c) 2006 Leslie Sanford
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#endregion
#region Contact
/*
* Leslie Sanford
* Email: jabberdabber@hotmail.com
*/
#endregion
using System;
using System.Collections.Generic;
using System.Threading;
namespace Sanford.Multimedia.Midi
{
public sealed partial class Track
{
#region Iterators
public IEnumerable<MidiEvent> Iterator()
{
MidiEvent current = head;
while(current != null)
{
yield return current;
current = current.Next;
}
current = endOfTrackMidiEvent;
yield return current;
}
public IEnumerable<int> DispatcherIterator(MessageDispatcher dispatcher)
{
IEnumerator<MidiEvent> enumerator = Iterator().GetEnumerator();
while(enumerator.MoveNext())
{
yield return enumerator.Current.AbsoluteTicks;
dispatcher.Dispatch(enumerator.Current.MidiMessage);
}
}
public IEnumerable<int> TickIterator(int startPosition,
ChannelChaser chaser, MessageDispatcher dispatcher)
{
#region Require
if(startPosition < 0)
{
throw new ArgumentOutOfRangeException("startPosition", startPosition,
"Start position out of range.");
}
#endregion
IEnumerator<MidiEvent> enumerator = Iterator().GetEnumerator();
bool notFinished = enumerator.MoveNext();
IMidiMessage message;
while(notFinished && enumerator.Current.AbsoluteTicks < startPosition)
{
message = enumerator.Current.MidiMessage;
if(message.MessageType == MessageType.Channel)
{
chaser.Process((ChannelMessage)message);
}
else if(message.MessageType == MessageType.Meta)
{
dispatcher.Dispatch(message);
}
notFinished = enumerator.MoveNext();
}
chaser.Chase();
int ticks = startPosition;
while(notFinished)
{
while(ticks < enumerator.Current.AbsoluteTicks)
{
yield return ticks;
ticks++;
}
yield return ticks;
while(notFinished && enumerator.Current.AbsoluteTicks == ticks)
{
dispatcher.Dispatch(enumerator.Current.MidiMessage);
notFinished = enumerator.MoveNext();
}
ticks++;
}
}
#endregion
}
}