MyID3v1public class MyID3v1 extends Object implements MusicMetadataConstants
| Fields Summary |
|---|
| private static final String | DEFAULT_CHAR_ENCODING |
| Methods Summary |
|---|
| private java.lang.String | getField(org.cmc.music.myid3.MyID3Listener listener, byte[] bytes, int start, int length)
for (int i = start; i < start + length; i++)
{
if (bytes[i] == 0)
{
length = i - start;
break;
}
}
// if (null != listener)
// listener
// .log("isValidIso8859", isValidIso8859(bytes, start, length));
if (length > 0)
{
try
{
String result = new String(bytes, start, length,
DEFAULT_CHAR_ENCODING);
result = result.trim();
if (result.length() < 1)
return null;
return result;
} catch (Throwable e)
{
}
}
return null;
| | public org.cmc.music.metadata.MusicMetadata | parseTags(byte[] bytes)
return parseTags(null, bytes);
| | public org.cmc.music.metadata.MusicMetadata | parseTags(org.cmc.music.myid3.MyID3Listener listener, byte[] bytes)
MusicMetadata tags = new MusicMetadata("id3v1");
int counter = 3;
String title = getField(listener, bytes, counter, 30);
counter += 30;
tags.put(KEY_TITLE, title);
if (null != listener)
listener.logWithLength("id3v1 title", title);
String artist = getField(listener, bytes, counter, 30);
counter += 30;
tags.put(KEY_ARTIST, artist);
if (null != listener)
listener.logWithLength("id3v1 artist", artist);
String album = getField(listener, bytes, counter, 30);
counter += 30;
tags.put(KEY_ALBUM, album);
if (null != listener)
listener.logWithLength("id3v1 album", album);
String year = getField(listener, bytes, counter, 4);
counter += 4;
tags.put(KEY_YEAR, year);
if (null != listener)
listener.logWithLength("id3v1 year", year);
String comment = getField(listener, bytes, counter, 30);
counter += 30;
tags.put(KEY_COMMENT, comment);
if (null != listener)
listener.logWithLength("id3v1 comment", comment);
if (bytes[counter - 2] == 0 && bytes[counter - 1] != 0)
{
int trackNumber = 0xff & bytes[counter - 1];
tags.put(KEY_TRACK_NUMBER, new Integer(trackNumber));
if (null != listener)
listener.log("id3v1 trackNumber: " + trackNumber);
}
int genre = 0xff & bytes[counter];
if (genre < 80 && genre > 0)
{
tags.put(KEY_GENRE_ID, new Integer(genre));
if (null != listener)
listener.log("id3v1 genre: " + genre);
}
if (null != listener)
listener.log();
return tags;
| | public byte[] | toTag(org.cmc.music.metadata.MusicMetadata values)
byte result[] = new byte[128];
int index = 0;
result[index++] = 0x54; // T
result[index++] = 0x41; // A
result[index++] = 0x47; // G
writeField(result, index, 30, (String) values.get(KEY_TITLE));
index += 30;
writeField(result, index, 30, (String) values.get(KEY_ARTIST));
index += 30;
writeField(result, index, 30, (String) values.get(KEY_ALBUM));
index += 30;
{
Object o = values.get(KEY_YEAR);
Number value = null;
if (o == null)
;
else if (o instanceof Number)
{
value = (Number) values.get(KEY_YEAR);
} else if (o instanceof String)
{
String s = (String) o;
try
{
value = Integer.valueOf(s);
} catch (NumberFormatException e)
{
}
} else
writeField(result, index, 4, value == null ? null : "" + value);
index += 4;
}
Number track_number = null;
{
Number value = (Number) values.get(KEY_TRACK_NUMBER);
if (value != null && value.intValue() >= 0
&& value.intValue() < 256)
track_number = value;
}
if (track_number == null)
{
writeField(result, index, 30, (String) values.get(KEY_COMMENT));
index += 30;
} else
{
writeField(result, index, 28, (String) values.get(KEY_COMMENT));
index += 28;
result[index++] = 0;
result[index++] = (byte) track_number.intValue();
}
{
Object o = (Object) values.get(KEY_GENRE_ID);
if (o == null)
o = (Object) values.get(KEY_GENRE);
if (o != null && (o instanceof String))
{
String genre_name = (String) o;
Number genre_id = ID3v1Genre.get(genre_name);
if (genre_id != null)
{
o = genre_id;
}
}
if (o != null && !(o instanceof Number))
{
} else
{
Number value = (Number) o;
if (value != null && value.intValue() >= 0
&& value.intValue() < 80)
result[index++] = (byte) value.intValue();
else
result[index++] = 0;
}
}
return result;
| | private void | writeField(byte[] bytes, int start, int max_length, java.lang.String s)
if (s == null)
{
for (int i = 0; i < max_length; i++)
bytes[i + start] = 0;
return;
}
byte value[] = s.getBytes(DEFAULT_CHAR_ENCODING);
int count = Math.min(value.length, max_length);
for (int i = 0; i < count; i++)
bytes[i + start] = value[i];
for (int i = count; i < max_length; i++)
bytes[i + start] = 0;
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