Examples of org.farng.mp3.id3.FrameBodyRVAD

org.farng.mp3.id3.FrameBodyTRCK

4.12.Relative volume adjustment

This is a more subjective function than the previous ones. It allows the user to say how much he wants to increase/decrease the volume on each channel while the file is played. The purpose is to be able to align all files to a reference volume, so that you don't have to change the volume constantly. This frame may also be used to balance adjust the audio. If the volume peak levels are known then this could be described with the 'Peak volume right' and 'Peak volume left' field. If Peakvolume is not known these fields could be left zeroed or, if no other data follows, be completely omitted. There may only be one "RVAD" frame in each tag.

<Header for 'Relative volume adjustment', ID: "RVAD">
Increment/decrement	%00xxxxxx
Bits used for volume descr.	$xx
Relative volume change, right	$xx xx (xx ...)
Relative volume change, left	$xx xx (xx ...)
Peak volume right	$xx xx (xx ...)
Peak volume left	$xx xx (xx ...)

In the increment/decrement field bit 0 is used to indicate the right channel and bit 1 is used to indicate the left channel. 1 is increment and 0 is decrement.

The 'bits used for volume description' field is normally $10 (16 bits) for MPEG 2 layer I, II and III and MPEG 2.5. This value may not be $00. The volume is always represented with whole bytes, padded in the beginning (highest bits) when 'bits used for volume description' is not a multiple of eight.

This datablock is then optionally followed by a volume definition for the left and right back channels. If this information is appended to the frame the first two channels will be treated as front channels. In the increment/decrement field bit 2 is used to indicate the right back channel and bit 3 for the left back channel.

Relative volume change, right back	$xx xx (xx ...)
Relative volume change, left back	$xx xx (xx ...)
Peak volume right back	$xx xx (xx ...)
Peak volume left back	$xx xx (xx ...)

If the center channel adjustment is present the following is appended to the existing frame, after the left and right back channels. The center channel is represented by bit 4 in the increase/decrease field.

Relative volume change, center	$xx xx (xx ...)
Peak volume center	$xx xx (xx ...)

If the bass channel adjustment is present the following is appended to the existing frame, after the center channel. The bass channel is represented by bit 5 in the increase/decrease field.

Relative volume change, bass	$xx xx (xx ...)
Peak volume bass	$xx xx (xx ...)

@author Eric Farng` @version $Revision: 1.5 $

    }


    public void setSongTitle(String songTitle) {
        AbstractID3v2Frame field = getFrame("TIT2");
        if (field == null) {
            field = new ID3v2_3Frame(new FrameBodyTIT2((byte) 0, songTitle.trim()));
            setFrame(field);
        } else {
            ((FrameBodyTIT2) field.getBody()).setText(songTitle.trim());
        }
    }

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                         this.testMusicArray[i].getMp3StartByte());
        }
        MP3File mp3file = new MP3File(new File(this.testMusicDirectory, this.testMusic[1]));
        ID3v2_4 tag = new ID3v2_4();
        ID3v2_4Frame frame = new ID3v2_4Frame();
        FrameBodyTPE1 body = new FrameBodyTPE1((byte) 0, "text");


        //        // save and re-read this to set file/tag alter preservation tags to
        // correct
        //        // values;
        //        mp3file.save();

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        mp3file = new MP3File();
        id3v1 = new ID3v1_1();
        id3v2 = new ID3v2_4();
        lyrics3 = new Lyrics3v2();
        filename = FilenameTagBuilder.createEmptyFilenameTag();
        frame = new ID3v2_4Frame(new FrameBodyTPE1((byte) 0, testString));
        id3v1.setArtist(testString);
        id3v2.setFrame(frame);
        try {
            ((Lyrics3v2) lyrics3).setField(new Lyrics3v2Field(frame));
        } catch (TagException ex) {

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        assertEquals(1, mp3.getUnsynchronizedFragments().size());


        // test two differences
        id3v1.setArtist("<song artist>");
        assertEquals(1, mp3.getUnsynchronizedFragments().size());
        body = new FrameBodyTPE1((byte) 0, "different");
        frame = new ID3v2_4Frame();
        frame.setBody(body);
        filename.setFrame(frame);
        assertEquals(2, mp3.getUnsynchronizedFragments().size());
        body = new FrameBodyTPE1((byte) 0, "<song artist>");
        frame = new ID3v2_4Frame();
        frame.setBody(body);
        filename.setFrame(frame);
        assertEquals(1, mp3.getUnsynchronizedFragments().size());
        lyrics3.setField(new Lyrics3v2Field(new FieldBodyEAR("different")));
        assertEquals(2, mp3.getUnsynchronizedFragments().size());
        lyrics3.setField(new Lyrics3v2Field(new FieldBodyEAR("<song artist>")));
        assertEquals(1, mp3.getUnsynchronizedFragments().size());
        body = new FrameBodyTPE1((byte) 0, "different");
        frame = new ID3v2_4Frame(body);
        id3v2.setFrame(frame);
        assertEquals(2, mp3.getUnsynchronizedFragments().size());
        body = new FrameBodyTPE1((byte) 0, "<song artist>");
        frame = new ID3v2_4Frame(body);
        id3v2.setFrame(frame);
        assertEquals(1, mp3.getUnsynchronizedFragments().size());
        mp3.getMp3file().delete();
    }

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        ((FrameBodyTIT2) mp3file.getFilenameTag().getFrame("TIT2").getBody()).getText().equals(testString);
        mp3file.setID3v1Tag(new ID3v1_1());
        mp3file.setID3v2Tag(new ID3v2_4());
        mp3file.setLyrics3Tag(new Lyrics3v2());
        mp3file.setFilenameTag(FilenameTagBuilder.createEmptyFilenameTag());
        frameBody = new FrameBodyTPE1();
        ((FrameBodyTPE1) frameBody).setText(testString);
        frame.setBody(frameBody);
        mp3file.setFrameAcrossTags(frame);
        mp3file.getID3v1Tag().getArtist().equals(testString);
        ((FrameBodyTPE1) mp3file.getID3v2Tag().getFrame("TPE1").getBody()).getText().equals(testString);

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    public String getLeadArtist() {
        String text = null;
        AbstractID3v2Frame frame = getFrame("TPE1");
        if (frame != null) {
            FrameBodyTPE1 body = (FrameBodyTPE1) frame.getBody();
            text = body.getText();
        }
        return text.trim();
    }

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    }


    public void setLeadArtist(String leadArtist) {
        AbstractID3v2Frame field = getFrame("TPE1");
        if (field == null) {
            field = new ID3v2_3Frame(new FrameBodyTPE1((byte) 0, leadArtist.trim()));
            setFrame(field);
        } else {
            ((FrameBodyTPE1) field.getBody()).setText(leadArtist.trim());
        }
    }

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        mp3file = new MP3File();
        id3v1 = new ID3v1_1();
        id3v2 = new ID3v2_4();
        lyrics3 = new Lyrics3v2();
        filename = FilenameTagBuilder.createEmptyFilenameTag();
        frame = new ID3v2_4Frame(new FrameBodyTRCK((byte) 0, "42"));
        ((ID3v1_1) id3v1).setTrack((byte) 42);
        id3v2.setFrame(frame);
        try {
            ((Lyrics3v2) lyrics3).setField(new Lyrics3v2Field(frame));
            fail("Somehow created a TRCK (track) Lyrics3v2 Field");

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

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    public String getTrackNumberOnAlbum() {
        String text = null;
        AbstractID3v2Frame frame = getFrame("TRCK");
        if (frame != null) {
            FrameBodyTRCK body = (FrameBodyTRCK) frame.getBody();
            text = body.getText();
        }
        return text.trim();
    }

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com.jitcaforwin.id3.jid3lib.TagTrackNumberTest

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org.farng.mp3.filename.FilenameTag

org.farng.mp3.filename.FilenameTagBuilder

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