#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;
namespace Sanford.Multimedia.Midi
{
public class ChannelChaser
{
private ChannelMessage[,] controllerMessages;
private ChannelMessage[] programChangeMessages;
private ChannelMessage[] pitchBendMessages;
private ChannelMessage[] channelPressureMessages;
private ChannelMessage[] polyPressureMessages;
public event EventHandler<ChasedEventArgs> Chased;
public ChannelChaser()
{
int c = ChannelMessage.MidiChannelMaxValue + 1;
int d = ShortMessage.DataMaxValue + 1;
controllerMessages = new ChannelMessage[c, d];
programChangeMessages = new ChannelMessage[c];
pitchBendMessages = new ChannelMessage[c];
channelPressureMessages = new ChannelMessage[c];
polyPressureMessages = new ChannelMessage[c];
}
public void Process(ChannelMessage message)
{
switch(message.Command)
{
case ChannelCommand.Controller:
controllerMessages[message.MidiChannel, message.Data1] = message;
break;
case ChannelCommand.ChannelPressure:
channelPressureMessages[message.MidiChannel] = message;
break;
case ChannelCommand.PitchWheel:
pitchBendMessages[message.MidiChannel] = message;
break;
case ChannelCommand.PolyPressure:
polyPressureMessages[message.MidiChannel] = message;
break;
case ChannelCommand.ProgramChange:
programChangeMessages[message.MidiChannel] = message;
break;
}
}
public void Chase()
{
ArrayList chasedMessages = new ArrayList();
for(int c = 0; c <= ChannelMessage.MidiChannelMaxValue; c++)
{
for(int n = 0; n <= ShortMessage.DataMaxValue; n++)
{
if(controllerMessages[c, n] != null)
{
chasedMessages.Add(controllerMessages[c, n]);
controllerMessages[c, n] = null;
}
}
if(programChangeMessages[c] != null)
{
chasedMessages.Add(programChangeMessages[c]);
programChangeMessages[c] = null;
}
if(pitchBendMessages[c] != null)
{
chasedMessages.Add(pitchBendMessages[c]);
pitchBendMessages[c] = null;
}
if(channelPressureMessages[c] != null)
{
chasedMessages.Add(channelPressureMessages[c]);
channelPressureMessages[c] = null;
}
if(polyPressureMessages[c] != null)
{
chasedMessages.Add(polyPressureMessages[c]);
polyPressureMessages[c] = null;
}
}
OnChased(new ChasedEventArgs(chasedMessages));
}
public void Reset()
{
for(int c = 0; c <= ChannelMessage.MidiChannelMaxValue; c++)
{
for(int n = 0; n <= ShortMessage.DataMaxValue; n++)
{
controllerMessages[c, n] = null;
}
programChangeMessages[c] = null;
pitchBendMessages[c] = null;
channelPressureMessages[c] = null;
polyPressureMessages[c] = null;
}
}
protected virtual void OnChased(ChasedEventArgs e)
{
EventHandler<ChasedEventArgs> handler = Chased;
if(handler != null)
{
handler(this, e);
}
}
}
}