differentialmanchester.java

数字信号的八种编码技术,用java实现的!仅供参考

package wxj.code.impl;

import java.util.ArrayList;
import java.util.List;

import wxj.code.Code;
import wxj.Regular.LevelRule;

public class DifferentialManchester extends LevelRule implements Code {
	private List<String> dManchesterCodeStrings = new ArrayList<String>();
	private char[] cs;
	private String level = FROM_LOW_LEVEL_HALF_TO_HIGH_LEVEL_HALF;

	public DifferentialManchester(char[] cs, int initialLevel) {
		this.cs = cs;
		if (initialLevel == 0) {
			this.level = FROM_LOW_LEVEL_HALF_TO_HIGH_LEVEL_HALF;
		} else {
			this.level = FROM_HIGH_LEVEL_HALF_TO_LOW_LEVEL_HALF;
		}
	}

	public List<String> excuteCodeRule() {
		int n = cs.length;
		for (int i = 0; i < n; i++) {
			if (cs[i] == '1') {
				level = this.transform(level);
			}
			dManchesterCodeStrings.add(level);
		}
		return dManchesterCodeStrings;
	}

	private String transform(String level) {
		if (level.endsWith(FROM_LOW_LEVEL_HALF_TO_HIGH_LEVEL_HALF)) {
			return FROM_HIGH_LEVEL_HALF_TO_LOW_LEVEL_HALF;
		} else {
			return FROM_LOW_LEVEL_HALF_TO_HIGH_LEVEL_HALF;
		}
	}

	public String getName() {
		return "DManchester";
	}

}