public static ID3Tag read(final File file) throws IOException {
long offset = file.length() - ID3_TAG_BYTES;
if (offset < 0) return null;
file.seek(offset);
try {
final ID3Tag tag = new ID3Tag();
final ByteArrayReader reader = new ByteArrayReader(file, ID3_TAG_BYTES);
tag.Header = reader.readString(3, defaultEncoding);
tag.Title = reader.readString(30, defaultEncoding);
tag.Artist = reader.readString(30, defaultEncoding);
tag.Album = reader.readString(30, defaultEncoding);
tag.Year = reader.readString(4, defaultEncoding);
tag.Comment = reader.readString(29, defaultEncoding);
tag.Track = reader.readUnsignedByte();
tag.Genre = reader.readUnsignedByte();
return tag.Header.equals("TAG") ? tag : null;
} catch (EOFException e) {
return null;
}
}
public void Start(
String pOutputFilename,
WaveFormat pwfeInput,
int nMaxAudioBytes,
int nCompressionLevel,
byte[] pHeaderData,
int nHeaderBytes)
throws IOException {
m_pioOutput = File.createFile(pOutputFilename, "rw");
m_bOwnsOutputIO = true;
m_spAPECompressCreate.Start(
m_pioOutput, pwfeInput, nMaxAudioBytes, nCompressionLevel, pHeaderData, nHeaderBytes);
m_nBufferSize = m_spAPECompressCreate.GetFullFrameBytes();
m_pBuffer = new byte[m_nBufferSize];
m_wfeInput = pwfeInput;
}