Android Open Source - QuMixDroid Qu16_ Mix Value

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*******************************************************************************
 * Copyright (c) 2013 george wieggers./*from   www  .  jav a  2 s  . com*/
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     george wieggers - initial API and implementation
 ******************************************************************************/
package org.wieggers.qu_apps.qu16;

import java.util.concurrent.ConcurrentLinkedQueue;

import org.wieggers.qu_apps.qu16.Qu16_Midi_Parser.IMidiListener;

public class Qu16_MixValue {

  private byte[] mCommand;
  private byte mValue;
  private ConcurrentLinkedQueue<IMixValueListener> mListeners;
  private IMidiListener mParent;

  public Qu16_MixValue(IMidiListener parent) {
    mParent = parent;
    mListeners = new ConcurrentLinkedQueue<IMixValueListener>();
    mCommand = null;
    mValue = 0;
  }  
  
  public byte getValue() {
    return mValue;
  }
  
  public void setValue(Object origin, byte value) {
    if (mValue != value) {
      mValue = value;
      
      if (mCommand != null) {
        switch (mCommand[0]) {
        case (byte) 0x90: // mute command:
          mCommand[2] = value;
          break;
        case (byte) 0xB0: // channel command:
          mCommand[8] = value;
          break;
        }

        mParent.singleMidiCommand(this, origin, mCommand);
      }
      
      for (IMixValueListener listener : mListeners) {
        listener.valueChanged(value);
      }
      
    }
  }
  
  public void addListener(IMixValueListener listener) {
    mListeners.add(listener);
  }
  
  public void removeListener(IMixValueListener listener) {
    mListeners.remove(listener);
  }
    
  static byte[] getKey(byte[] data) {
    switch (data[0]) {
    case (byte) 0xB0: // channel_command
      return new byte[] { data[0], data[2], data[5], data[11] };
    case (byte) 0x90: // mute command
      return new byte[] { data[0], data[1], 0, 0 };
    }
    
    return null;
  }

  byte[] getCommand() {
    return mCommand;
  }

  void setCommand(Object origin, byte[] data) {
    mCommand = data;
    
    if (mCommand != null) {
      switch (mCommand[0]) {
      case (byte) 0x90: // mute command:
        setValue(origin, data[2]);
        break;
      case (byte) 0xB0: // channel command:
        setValue(origin, data[8]);
        break;
      }
    }
  }
  
  public interface IMixValueListener {
    void connect(Qu16_MixValue value);
    void valueChanged(byte value);
  }
}

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