Android Open Source - cwp-morse-mangle C W State Change

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License

The source code is released under:

Copyright (C) 2012 Jussi Kivilinna <jussi.kivilinna@gmail.com> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "S...

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Java Source Code

/*
 * Copyright (C) 2012 Jussi Kivilinna <jussi.kivilinna@gmail.com>
 *//w  ww  .  java 2  s.  c  om
 * 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.
 *
 */

package fi_81.cwp_morse_mangle.cwp;

import java.nio.ByteBuffer;

public class CWStateChange {
  public static final byte TYPE_DOWN_TO_UP = 1;
  public static final byte TYPE_UP_TO_DOWN = -1;
  public static final byte TYPE_FREQUENCY_CHANGE = 2;

  protected byte type;
  protected int value;

  /* time since creation of connection when to send this message */
  private long outTime;

  public void setValues(byte type, int timestampOrDuration, long outTime) {
    this.type = type;
    this.value = timestampOrDuration;
    this.outTime = outTime;
  }

  public CWStateChange(byte type, int timestampOrDuration, long outTime) {
    setValues(type, timestampOrDuration, outTime);
  }

  public void clear() {
    setValues((byte) 0, 0, 0);
  }

  public CWStateChange() {
    clear();
  }

  public byte getType() {
    return type;
  }

  public int getValue() {
    return value;
  }

  public long getOutTime() {
    return outTime;
  }

  public void addTimestamp(long timestamp) {
    if (type == TYPE_DOWN_TO_UP)
      value += timestamp;
    outTime += timestamp;
  }

  public boolean writeToBuffer(ByteBuffer outbuf) {
    if (type == TYPE_DOWN_TO_UP || type == TYPE_FREQUENCY_CHANGE) {
      /* check if state-change fits in to buffer */
      if (outbuf.remaining() < 4)
        return false;

      outbuf.putInt(value);
      return true;
    }

    /* TODO: handle long up-states */

    /* check if state-change fits in to buffer */
    if (outbuf.remaining() < 2)
      return false;

    outbuf.putShort((short) value);

    return true;
  }
}

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