playlistitem.java

java+eclipse做的TTPlayer

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package com.hadeslee.yoyoplayer.playlist;

import com.hadeslee.yoyoplayer.util.*;
import com.hadeslee.yoyoplayer.tag.TagInfo;
import com.hadeslee.yoyoplayer.tag.TagInfoFactory;
import java.io.File;
import java.io.Serializable;
import java.util.Vector;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author hadeslee
 */
/**
 * This class implements item for playlist.
 */
public class PlayListItem implements Serializable {

    private static final long serialVersionUID = 20071213L;
    private static Logger log = Logger.getLogger(PlayListItem.class.getName());
    protected String name = null;
    protected String displayName = null;
    protected String location = null;
    protected boolean isFile = true;
    protected long seconds = -1;
    protected boolean isSelected = false; // 
    protected TagInfo taginfo = null;
    private String bitRate;
    private String sampled;
    private String channels;
    private String artist;
    private String title;
    private String comment;
    private String album;
    private String year;
    private String track;
    private String genre;
    private boolean isRead;//是否读过标签了,免得每次都去读
    private File lyricFile;//这个项目所关联的歌词文件
    protected static ExecutorService es = Executors.newSingleThreadExecutor();

    protected PlayListItem() {

    }

    /**
     * Contructor for playlist item.
     *
     * @param name     Song name to be displayed
     * @param location File or URL
     * @param seconds  Time length
     * @param isFile   true for File instance
     */
    public PlayListItem(String name, String location, long seconds, boolean isFile) {
        this.name = name;
        this.seconds = seconds;
        this.isFile = isFile;
        this.location = location;
//        Config config = Config.getConfig();
//        log.log(Level.INFO, "读取标签的策略是：" + config.getTagInfoPolicy());
//        if (config.getTagInfoPolicy().equals(Config.TAGINFO_POLICY_ALL)) {
//            // Read tag info for any File or URL. It could take time.
//            setLocation(location, true);
//        } else if (config.getTagInfoPolicy().equals(Config.TAGINFO_POLICY_FILE)) {
//            // Read tag info for any File only not for URL.
//            if (this.isFile) {
//                setLocation(location, true);
//            } else {
//                setLocation(location, false);
//            }
//        } else {
//            // Do not read tag info.
//            setLocation(location, false);
//        }
    }

    public String getGenre() {
        return genre;
    }

    public void setGenre(String genre) {
        this.genre = genre;
    }

    public String getTrack() {
        return track;
    }

    public void setTrack(String track) {
        this.track = track;
    }

    public File getLyricFile() {
        return lyricFile;
    }

    public void setLyricFile(File lyricFile) {
        this.lyricFile = lyricFile;
    }

    public boolean isValid() {
        TagInfo tag = getTagInfo();
        return tag != null;
    }

    public void setDuration(long sec) {
        seconds = sec;
    }

    public void setBitRate(String s) {
        bitRate = s;
    }

    public void setSampled(String s) {
        sampled = s;
    }

    /**
     * 刷新一下,并不代表文件底层就变了,
     * 这个方法在文件播放的时候改名很方便
     */
    public void refresh() {
        displayName = getFormattedDisplayName();
    }

    public String getBitRate() {
        if (bitRate == null) {
            int bit = getBitrate();
            if (bit <= 0) {
                bitRate = Config.getResource("songinfo.unknown.bitrate");
            } else {
                bit = Math.round((bit / 1000));
                if (bit > 999) {
                    bit = (bit / 100);
                    bitRate = bit + "Hkbps";
                } else {
                    bitRate = String.valueOf(bit) + "kbps";
                }
            }

        }
        return bitRate;
    }

    public String getSampled() {
        if (sampled == null) {
            int sam = getSamplerate();
            if (sam <= 0) {
                sampled = Config.getResource("songinfo.unknown.samplerate");
            } else {
                sampled = String.valueOf(Math.round((sam / 1000))) + "kHz";
            }
        }
        return sampled;
    }

    /**
     * Returns item name such as (hh:mm:ss) Title - Artist if available.
     *
     * @return
     */
    public String getFormattedName() {
        if (displayName == null) {
            return name;
        } // Name extracted from TagInfo or stream title.
        else {
            return displayName;
        }
    }

    public String getName() {
        return Util.getSongName(location);
    }

    public String getLocation() {
        return location;
    }

    /**
     * Returns true if item to play is coming for a file.
     *
     * @return
     */
    public boolean isFile() {
        return isFile;
    }

    /**
     * Set File flag for playslit item.
     *
     * @param b
     */
    public void setFile(boolean b) {
        isFile = b;
    }

    /**
     * Returns playtime in seconds. If tag info is available then its playtime will be returned.
     *
     * @return playtime
     */
    public long getLength() {
        if ((taginfo != null) && (taginfo.getPlayTime() > 0)) {
            return taginfo.getPlayTime();
        } else {
            return seconds;
        }
    }

    public int getBitrate() {
        if (taginfo != null) {
            return taginfo.getBitRate();
        } else {
            return -1;
        }
    }

    public void setAlbum(String album) {
        this.album = album;
    }

    public String getAlbum() {
        if (album != null) {
            return album;
        } else if ((taginfo = getTagInfo()) != null) {
            album = taginfo.getAlbum();
            return album;
        } else {
            return Config.getResource("songinfo.unknown.album");
        }
    }

    public String getChannelInfo() {
        if (channels == null) {
            int cs = getChannels();
            if (cs == 1) {
                return Config.getResource("songinfo.channel.mono");
            } else if (cs == 2) {
                return Config.getResource("songinfo.channel.stereo");
            } else {
                return Config.getResource("songinfo.unknown.channel");
            }
        }
        return channels;
    }

    public void setChannels(String s) {
        this.channels = s;
    }

    public int getSamplerate() {
        if (taginfo != null) {
            return taginfo.getSamplingRate();
        } else {
            return -1;
        }
    }

    public int getChannels() {
        if (taginfo != null) {
            return taginfo.getChannels();
        } else {
            return -1;
        }
    }

    public String getComment() {
        if (comment != null) {
            return comment;
        } else if ((taginfo = getTagInfo()) != null) {
            Vector v = taginfo.getComment();
            if (v != null) {
                comment = String.valueOf(v.get(0));
                return comment;
            }
            return "";
        } else {
            return "";
        }
    }

    public void setComment(String comment) {
        this.comment = comment;
    }

    /**
     * 重新读取标签
     */
    public void reRead() {
        //如果是URL就不用再读了，就用设置的就行了
        if (!isFile) {
            return;
        }
        bitRate = null;
        sampled = null;
        channels = null;
        artist = null;
        title = null;
        comment = null;
        album = null;
        year = null;
        isRead = true;
        // Read Audio Format and read tags/comments.
        if ((location != null) && (!location.equals(""))) {
            TagInfoFactory factory = TagInfoFactory.getInstance();
            taginfo = factory.getTagInfo(location);
            log.log(Level.INFO, "taginfo=" + taginfo);
        }
        displayName = getFormattedDisplayName();
        log.log(Level.INFO, "setDisPlay=" + displayName);
    }

    public String getYear() {
        if (year != null) {
            return year;
        } else if ((taginfo = getTagInfo()) != null) {
            year = String.valueOf(taginfo.getYear());
            return year;
        } else {
            return "";
        }
    }

    public void setYear(String year) {
        this.year = year;
    }

    public void setSelected(boolean mode) {
        isSelected = mode;
    }

    public boolean isSelected() {
        return isSelected;
    }

    /**
     * Reads file comments/tags.
     *
     * @param l
     */
    public void setLocation(String l) {
        this.location = l;
    }

    /**
     * Reads (or not) file comments/tags.
     *
     * @param l        input location
     * @param readInfo
     */
    private void setLocation(final String l, final boolean readInfo) {
        if (isRead) {
            return;
        }
        //如果是文件,则当场读出来
        if (isFile) {
            es.execute(new Runnable() {

                public void run() {
                    setLocation0(l, readInfo);
                }
            });
        } else {//如果不是文件,则起个线程异步读出来
            new Thread() {

                public void run() {
                    setLocation0(l, readInfo);
                }
            }.start();
        }


    }

    private void setLocation0(String l, boolean readInfo) {
        isRead = readInfo;
        location = l;
        if (readInfo == true) {
            // Read Audio Format and read tags/comments.
            if ((location != null) && (!location.equals(""))) {
                TagInfoFactory factory = TagInfoFactory.getInstance();
                taginfo = factory.getTagInfo(l);
                log.log(Level.INFO, "taginfo=" + taginfo);
            }
        }
        displayName = getFormattedDisplayName();
        log.log(Level.INFO, "setDisPlay=" + displayName);
        Config.getConfig().getPlWindow().repaint();
    }

    /**
     * Returns item lenght such as hh:mm:ss
     *
     * @return formatted String.
     */
    public String getFormattedLength() {
        long time = getLength();
        String length = "";
        if (time > -1) {
            int minutes = (int) Math.floor(time / 60);
            int hours = (int) Math.floor(minutes / 60);
            minutes = minutes - hours * 60;
            int ss = (int) (time - minutes * 60 - hours * 3600);
            // Hours.
            if (hours > 0) {
                length = length + FileUtil.rightPadString(hours + "", '0', 2) + ":";
            }
            length = length + FileUtil.rightPadString(minutes + "", '0', 2) + ":" + FileUtil.rightPadString(ss + "", '0', 2);
        } else {
            length = "" + time;
        }
        return length;
    }

    /**
     * Returns item name such as (hh:mm:ss) Title - Artist
     *
     * @return formatted String.
     */
    public String getFormattedDisplayName() {
        if (artist != null && title != null) {
            String temp = "";
            if (!artist.trim().equals("")) {
                temp = artist.trim() + " - ";
            }
            if (!title.trim().equals("")) {
                temp += title.trim();
            }
            return temp;
        } else if (taginfo == null) {
            return null;
        } else {
            if ((taginfo.getTitle() != null) && (!taginfo.getTitle().trim().equals("")) && (taginfo.getArtist() != null) && (!taginfo.getArtist().trim().equals(""))) {
                log.log(Level.INFO, "---------------------------------");
                log.log(Level.INFO, "name=" + name);
                log.log(Level.INFO, "artist=" + taginfo.getArtist());
                log.log(Level.INFO, "title=" + taginfo.getTitle());
                return (taginfo.getArtist() + " - " + taginfo.getTitle());

            } else if ((taginfo.getTitle() != null) && (!taginfo.getTitle().trim().equals(""))) {
                return (taginfo.getTitle());
            } else {
                return (name);
            }
        }
    }

    public void setFormattedDisplayName(String fname) {
        log.log(Level.INFO, "************setFormatedName:" + fname);
        displayName = fname;
    }

    /**
     * Return item name such as hh:mm:ss,Title,Artist
     *
     * @return formatted String.
     */
    public String getM3UExtInf() {
        if (taginfo == null) {
            return (seconds + "," + name);
        } else {
            if ((taginfo.getTitle() != null) && (taginfo.getArtist() != null)) {
                return (getLength() + "," + taginfo.getTitle() + " - " + taginfo.getArtist());
            } else if (taginfo.getTitle() != null) {
                return (getLength() + "," + taginfo.getTitle());
            } else {
                return (seconds + "," + name);
            }
        }
    }

    /**
     * Return TagInfo.
     *
     * @return
     */
    public TagInfo getTagInfo() {
        if (taginfo == null) {
            if (Config.getConfig().getReadTagInfoStrategy().equals(Config.READ_WHEN_PLAY)) {
                if (Config.getConfig().getPlayer().getCurrentItem() == this) {
                    setLocation(location, true);
                }
            } else {
                setLocation(location, true);
            }
        }
        return taginfo;
    }

    public String getFormat() {
        String f = location.substring(location.lastIndexOf(".") + 1);
        f = f + " " + getSampled() + " " + getBitRate();
        return f;
    }

    public String getType() {
        TagInfo tag = getTagInfo();
        if (tag == null) {
            return Util.getExtName(location);
        } else {
            return tag.getType();
        }

    }

    public String getTitle() {
        TagInfo tag = getTagInfo();
        if (tag != null) {
            title = tag.getTitle() == null ? name : tag.getTitle().trim();
        } else if (title != null) {
            return title;
        } else {
            title = name;
        }
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getArtist() {
        if ((taginfo = getTagInfo()) != null) {
            artist = taginfo.getArtist() == null ? "" : taginfo.getArtist().trim();
        } else if (artist != null) {
            return artist;
        }
        return artist;
    }

    public void setArtist(String artist) {
        this.artist = artist;
    }

    public String toString() {
        TagInfo tag = getTagInfo();
        return displayName;
    }
}