net.pms.formats.v2.AudioAttribute.java Source code

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Here is the source code for net.pms.formats.v2.AudioAttribute.java

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/*
 * PS3 Media Server, for streaming any medias to your PS3.
 * Copyright (C) 2012  I. Sokolov
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; version 2
 * of the License only.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package net.pms.formats.v2;

import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import static org.apache.commons.lang3.StringUtils.isBlank;

/**
 * Enum with possible audio track attributes.
 * AUDIO_ATTRIBUTE (Set<String> libMediaInfoKeys, boolean multipleValuesPossible,
 * boolean getLargerValue, Integer defaultValue, Integer minimumValue)
 */
public enum AudioAttribute {
    CHANNELS_NUMBER(set("Channel(s)"), true, true, 2, 1), DELAY(set("Video_Delay"), false, false, 0,
            null), SAMPLE_FREQUENCY(set("SamplingRate"), true, true, 48000, 1);

    private final Set<String> libMediaInfoKeys;
    private final boolean multipleValuesPossible;
    private final boolean getLargerValue;
    private final Integer defaultValue;
    private final Integer minimumValue;

    private static final Pattern libMediaInfoKeyPattern = Pattern.compile("^\\s*(\\S+)\\s*:");
    private final static Map<String, AudioAttribute> libMediaInfoKeyToAudioAttributeMap;

    private static Set<String> set(String... args) {
        return new HashSet<String>(Arrays.asList(args));
    }

    static {
        libMediaInfoKeyToAudioAttributeMap = new HashMap<String, AudioAttribute>();
        for (AudioAttribute audioAttribute : values()) {
            for (String libMediaInfoKey : audioAttribute.libMediaInfoKeys) {
                libMediaInfoKeyToAudioAttributeMap.put(libMediaInfoKey.toLowerCase(), audioAttribute);
            }
        }
    }

    private AudioAttribute(Set<String> libMediaInfoKeys, boolean multipleValuesPossible, boolean getLargerValue,
            Integer defaultValue, Integer minimumValue) {
        this.libMediaInfoKeys = libMediaInfoKeys;
        this.multipleValuesPossible = multipleValuesPossible;
        this.getLargerValue = getLargerValue;
        this.defaultValue = defaultValue;
        this.minimumValue = minimumValue;
    }

    public static AudioAttribute getAudioAttributeByLibMediaInfoKeyValuePair(String keyValuePair) {
        if (isBlank(keyValuePair)) {
            throw new IllegalArgumentException("Empty keyValuePair passed in.");
        }

        Matcher keyMatcher = libMediaInfoKeyPattern.matcher(keyValuePair);
        if (keyMatcher.find()) {
            String key = keyMatcher.group(1);
            AudioAttribute audioAttribute = libMediaInfoKeyToAudioAttributeMap.get(key.toLowerCase());
            if (audioAttribute == null) {
                throw new IllegalArgumentException("Can't find AudioAttribute for key '" + key + "'.");
            } else {
                return audioAttribute;
            }
        } else {
            throw new IllegalArgumentException("Can't find key in keyValuePair '" + keyValuePair + "'.");
        }
    }

    public Integer getDefaultValue() {
        return defaultValue;
    }

    public boolean isGetLargerValue() {
        return getLargerValue;
    }

    public boolean isMultipleValuesPossible() {
        return multipleValuesPossible;
    }

    public Integer getMinimumValue() {
        return minimumValue;
    }
}