Examples of org.farng.mp3.id3.ID3v1

org.farng.mp3.id3.FrameBodyTIT2

What is ID3 (v1)?

The audio format MPEG layer I, layer II and layer III (MP3) has no native way of saving information about the contents, except for some simple yes/no parameters like "private", "copyrighted" and "original home" (meaning this is the original file and not a copy). A solution to this problem was introduced with the program "Studio3" by Eric Kemp alias NamkraD in 1996. By adding a small chunk of extra data in the end of the file one could get the MP3 file to carry information about the audio and not just the audio itself.

The placement of the tag, as the data was called, was probably chosen as there were little chance that it should disturb decoders. In order to make it easy to detect a fixed size of 128 bytes was chosen. The tag has the following layout (as hinted by the scheme to the right):

Song title	30 characters
Artist	30 characters
Album	30 characters
Year	4 characters
Comment	30 characters
Genre	1 byte

If you one sum the the size of all these fields we see that 30+30+30+4+30+1 equals 125 bytes and not 128 bytes. The missing three bytes can be found at the very end of the tag, before the song title. These three bytes are always "TAG" and is the identification that this is indeed a ID3 tag. The easiest way to find a ID3v1/1.1 tag is to look for the word "TAG" 128 bytes from the end of a file.

As all artists doesn't have a 30 character name it is said that if there is some bytes left after the information is entered in the field, those bytes should be fille with the binary value 0. You might also think that you cannot write that much in the genre field, being one byte big, but it is more clever than that. The byte value you enter in the genre field corresponds to a value in a predefined list. The list that Eric Kemp created had 80 entries, ranging from 0 to 79.

@author Eric Farng @version $Revision: 1.6 $

        mp3file = new MP3File();
        id3v1 = new ID3v1_1();
        id3v2 = new ID3v2_4();
        lyrics3 = new Lyrics3v2();
        filename = FilenameTagBuilder.createEmptyFilenameTag();
        frame = new ID3v2_4Frame(new FrameBodyTCON((byte) 0, "(42) Soul"));
        id3v1.setGenre((byte) 42);
        id3v2.setFrame(frame);
        try {
            ((Lyrics3v2) lyrics3).setField(new Lyrics3v2Field(frame));
            fail("Somehow created a TCON (genre) Lyrics3v2 Field");

View Full Code Here

                .equals(testString);
        mp3file.setID3v1Tag(new ID3v1_1());
        mp3file.setID3v2Tag(new ID3v2_4());
        mp3file.setLyrics3Tag(new Lyrics3v2());
        mp3file.setFilenameTag(FilenameTagBuilder.createEmptyFilenameTag());
        frameBody = new FrameBodyTCON();
        ((FrameBodyTCON) frameBody).setText("42");
        frame.setBody(frameBody);
        mp3file.setFrameAcrossTags(frame);
        assertEquals(42, mp3file.getID3v1Tag().getGenre());
        ((FrameBodyTCON) mp3file.getID3v2Tag().getFrame("TCON").getBody()).getText().equals("42");

View Full Code Here

        mp3file = new MP3File();
        id3v1 = new ID3v1_1();
        id3v2 = new ID3v2_4();
        lyrics3 = new Lyrics3v2();
        filename = FilenameTagBuilder.createEmptyFilenameTag();
        frame = new ID3v2_4Frame(new FrameBodyTDRC((byte) 0, "1992"));
        id3v1.setYear("1992");
        id3v2.setFrame(frame);
        try {
            ((Lyrics3v2) lyrics3).setField(new Lyrics3v2Field(frame));
            fail("Somehow created a TDRC (year) Lyrics3v2 Field");

View Full Code Here

        ((FrameBodyTALB) mp3file.getFilenameTag().getFrame("TALB").getBody()).getText().equals(testString);
        mp3file.setID3v1Tag(new ID3v1_1());
        mp3file.setID3v2Tag(new ID3v2_4());
        mp3file.setLyrics3Tag(new Lyrics3v2());
        mp3file.setFilenameTag(FilenameTagBuilder.createEmptyFilenameTag());
        frameBody = new FrameBodyTDRC();
        ((FrameBodyTDRC) frameBody).setText("2003");
        frame.setBody(frameBody);
        mp3file.setFrameAcrossTags(frame);
        mp3file.getID3v1Tag().getYear().equals("2003");
        ((FrameBodyTDRC) mp3file.getID3v2Tag().getFrame("TDRC").getBody()).getText().equals("2003");

View Full Code Here


    public String getYearReleased() {
        String text = null;
        AbstractID3v2Frame frame = getFrame("TDRC");
        if (frame != null) {
            FrameBodyTDRC body = (FrameBodyTDRC) frame.getBody();
            text = body.getText();
        }
        return text.trim();
    }

View Full Code Here

    }


    public void setYearReleased(String yearReleased) {
        AbstractID3v2Frame field = getFrame("TDRC");
        if (field == null) {
            field = new ID3v2_3Frame(new FrameBodyTDRC((byte) 0, yearReleased.trim()));
            setFrame(field);
        } else {
            ((FrameBodyTDRC) field.getBody()).setText(yearReleased.trim());
        }
    }

View Full Code Here


        // test all different fields
        List frameList;
        final String testString = "Test String";
        mp3file = new MP3File();
        frame = new ID3v2_4Frame(new FrameBodyTIT2((byte) 0, testString));
        id3v1 = new ID3v1_1();
        id3v2 = new ID3v2_4();
        lyrics3 = new Lyrics3v2();
        filename = FilenameTagBuilder.createEmptyFilenameTag();
        id3v1.setTitle(testString);

View Full Code Here

        assertEquals(0, mp3.getUnsynchronizedFragments().size());
        filename.setFrame(frame);
        assertEquals(0, mp3.getUnsynchronizedFragments().size());


        // test differences
        body = new FrameBodyTIT2((byte) 0, "<song title>");
        frame = new ID3v2_4Frame();
        frame.setBody(body);
        filename.setFrame(frame);
        assertEquals(0, mp3.getUnsynchronizedFragments().size());
        id3v1.setTitle("different");
        assertEquals(1, mp3.getUnsynchronizedFragments().size());
        id3v1.setTitle("<song title>");
        assertEquals(0, mp3.getUnsynchronizedFragments().size());
        lyrics3.setField(new Lyrics3v2Field(new FieldBodyETT("different")));
        assertEquals(1, mp3.getUnsynchronizedFragments().size());
        lyrics3.setField(new Lyrics3v2Field(new FieldBodyETT("<song title>")));
        assertEquals(0, mp3.getUnsynchronizedFragments().size());
        body = new FrameBodyTIT2((byte) 0, "different");
        frame = new ID3v2_4Frame(body);
        id3v2.setFrame(frame);
        assertEquals(1, mp3.getUnsynchronizedFragments().size());


        // test two differences

View Full Code Here

        // test all
        mp3file.setID3v1Tag(new ID3v1_1());
        mp3file.setID3v2Tag(new ID3v2_4());
        mp3file.setLyrics3Tag(new Lyrics3v2());
        mp3file.setFilenameTag(FilenameTagBuilder.createEmptyFilenameTag());
        frameBody = new FrameBodyTIT2();
        ((FrameBodyTIT2) frameBody).setText(testString);
        frame.setBody(frameBody);
        mp3file.setFrameAcrossTags(frame);
        mp3file.getID3v1Tag().getTitle().equals(testString);
        ((FrameBodyTIT2) mp3file.getID3v2Tag().getFrame("TIT2").getBody()).getText().equals(testString);

View Full Code Here


    public String getSongTitle() {
        String text = null;
        AbstractID3v2Frame frame = getFrame("TIT2");
        if (frame != null) {
            FrameBodyTIT2 body = (FrameBodyTIT2) frame.getBody();
            text = body.getText();
        }
        return text.trim();
    }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.farng.mp3.id3.ID3v1

com.jitcaforwin.id3.jid3lib.TagGenreTest

com.jitcaforwin.id3.jid3lib.TagTrackNumberTest

com.main.gui.JMP3Propriedades

junit.framework.TestSuite

net.nutch.parse.mp3.MP3Parser

org.apache.nutch.parse.mp3.MP3Parser

org.cmc.music.metadata.IMusicMetadata

org.cmc.music.myid3.MyID3

org.farng.mp3.AbstractMP3FragmentBody

org.farng.mp3.AbstractMP3Tag

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.