org.praat.IntervalTier.java Source code

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Here is the source code for org.praat.IntervalTier.java

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/*
 * #%L
 * LabelUtils
 * %%
 * Copyright (C) 2012 INRIA
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package org.praat;

import java.io.IOException;
import java.util.List;
import java.util.ListIterator;

import com.google.common.base.Objects;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;

public class IntervalTier extends Tier implements Iterable<Interval> {

    private List<Interval> items = Lists.newArrayList();

    /**
     * Construct IntervalTier from a List of Intervals. The time domain of the IntervalTier will be determined by the start and
     * end time of the first and last Interval, respectively.
     * 
     * @param name
     * @param intervals
     */
    public IntervalTier(String name, List<Interval> intervals) {
        this.name = name;

        // update time domain
        xmin = intervals.get(0).getStartTime();
        xmax = Iterables.getLast(intervals).getEndTime();

        items = intervals;
    }

    public IntervalTier(String name, double startTime, double endTime) {
        super(name, startTime, endTime);
        Interval interval = new Interval(startTime, endTime, "");
        items.add(interval);
    }

    public IntervalTier(PraatFile file) throws IOException {
        read(file);
    }

    public void addInterval(Interval interval) {
        items.add(interval);
    }

    @Override
    public PraatObject read(PraatFile file) throws IOException {
        xmin = file.readDouble();
        xmax = file.readDouble();
        int numItems = file.readInteger();

        // iterate over intervals
        for (int i = 0; i < numItems; i++) {
            double start = file.readDouble();
            double end = file.readDouble();
            String label = file.readString();
            Interval interval = new Interval(start, end, label);
            items.add(interval);
        }
        return this;
    }

    @Override
    public void write(PraatFile file) throws IOException {
        file.writeDouble("xmin =", xmin);
        file.writeDouble("xmax =", xmax);
        file.writeInteger("intervals: size =", items.size());

        // iterate over items
        int p = 1;
        for (Interval point : items) {
            file.writeLine("intervals [%d]:", p++);
            file.increaseIndent();
            file.writeDouble("xmin =", point.getStartTime());
            file.writeDouble("xmax =", point.getEndTime());
            file.writeString("text =", point.getText());
            file.decreaseIndent();
        }
    }

    @Override
    public ListIterator<Interval> iterator() {
        ListIterator<Interval> iterator = items.listIterator();
        return iterator;
    }

    @Override
    public String toString() {
        return Objects.toStringHelper(this).add("xmin", xmin).add("xmax", xmax).add("name", name)
                .add("intervals", items).toString();
    }

}