/*
* 21.04.2004 Original verion. davagin@udm.ru.
*-----------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*----------------------------------------------------------------------
*/
package davaguine.jmac.spi;
import davaguine.jmac.decoder.IAPEDecompress;
import davaguine.jmac.tools.Globals;
import davaguine.jmac.tools.InputStreamFile;
import davaguine.jmac.tools.JMACException;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.sound.sampled.spi.AudioFileReader;
import java.io.*;
import java.net.URL;
/**
* Author: Dmitry Vaguine
* Date: 12.03.2004
* Time: 13:35:13
*/
/**
* Provider for MAC audio file reading.
*/
public class APEAudioFileReader extends AudioFileReader {
private final static int MAX_HEADER_SIZE = 16384;
/**
* Obtains the audio file format of the File provided. The File must point to valid audio file data.
*
* @param file - the File from which file format information should be extracted
* @return an APEAudioFileFormat object describing the MAC audio file format
* @throws UnsupportedAudioFileException - if the File does not point to valid MAC audio file
* @throws IOException - if an I/O exception occurs
*/
public AudioFileFormat getAudioFileFormat(File file) throws UnsupportedAudioFileException, IOException {
if (Globals.DEBUG) System.out.println("APEAudioFileReader.getAudioFileFormat( File )");
IAPEDecompress decoder;
try {
decoder = IAPEDecompress.CreateIAPEDecompress(new davaguine.jmac.tools.RandomAccessFile(file, "r"));
} catch (JMACException e) {
throw new UnsupportedAudioFileException("Unsupported audio file");
} catch (EOFException e) {
throw new UnsupportedAudioFileException("Unsupported audio file");
}
APEAudioFormat format = new APEAudioFormat(APEEncoding.APE, decoder.getApeInfoSampleRate(),
decoder.getApeInfoBitsPerSample(),
decoder.getApeInfoChannels(),
AudioSystem.NOT_SPECIFIED, AudioSystem.NOT_SPECIFIED, false);
return new APEAudioFileFormat(APEAudioFileFormatType.APE, (int) file.length(), format, AudioSystem.NOT_SPECIFIED);
}
/**
* Obtains an audio input stream from the URL provided. The URL must point to valid MAC audio file data.
*
* @param url - the URL from which file format information should be extracted
* @return an APEAudioFileFormat object describing the MAC audio file format
* @throws UnsupportedAudioFileException - if the URL does not point to valid MAC audio file
* @throws IOException - if an I/O exception occurs
*/
public AudioFileFormat getAudioFileFormat(URL url) throws UnsupportedAudioFileException, IOException {
InputStream inputStream = url.openStream();
try {
return getAudioFileFormat(inputStream);
} finally {
inputStream.close();
}
}
/**
* Obtains the audio file format of the input stream provided. The stream must point to valid MAC audio file data.
*
* @param stream - the input stream from which file format information should be extracted
* @return an APEAudioFileFormat object describing the MAC audio file format
* @throws UnsupportedAudioFileException - if the stream does not point to valid MAC audio file
* @throws IOException - if an I/O exception occurs
*/
public AudioFileFormat getAudioFileFormat(InputStream stream) throws UnsupportedAudioFileException, IOException {
if (Globals.DEBUG) System.out.println("APEAudioFileReader.getAudioFileFormat( InputStream )");
IAPEDecompress decoder;
try {
decoder = IAPEDecompress.CreateIAPEDecompress(new InputStreamFile(stream));
} catch (JMACException e) {
throw new UnsupportedAudioFileException("Unsupported audio file");
} catch (EOFException e) {
throw new UnsupportedAudioFileException("Unsupported audio file");
}
APEAudioFormat format = new APEAudioFormat(APEEncoding.APE, decoder.getApeInfoSampleRate(),
decoder.getApeInfoBitsPerSample(),
decoder.getApeInfoChannels(),
AudioSystem.NOT_SPECIFIED, AudioSystem.NOT_SPECIFIED, false);
return new APEAudioFileFormat(APEAudioFileFormatType.APE, AudioSystem.NOT_SPECIFIED, format, AudioSystem.NOT_SPECIFIED);
}
/**
* Obtains an audio input stream from the input stream provided. The stream must point to valid MAC audio file data.
*
* @param stream - the input stream from which the AudioInputStream should be constructed
* @return an AudioInputStream object based on the audio file data contained in the input stream.
* @throws UnsupportedAudioFileException - if the stream does not point to valid MAC audio file data recognized by the system
* @throws IOException - if an I/O exception occurs
*/
public AudioInputStream getAudioInputStream(InputStream stream) throws UnsupportedAudioFileException, IOException {
// Save byte header since this method must return the stream opened at byte 0.
final BufferedInputStream in = new BufferedInputStream(stream);
in.mark(MAX_HEADER_SIZE);
final AudioFileFormat format = getAudioFileFormat(in);
in.reset();
return new AudioInputStream(in, format.getFormat(), format.getFrameLength());
}
/**
* Obtains an audio input stream from the File provided. The File must point to valid MAC audio file data.
*
* @param file - the File for which the AudioInputStream should be constructed
* @return an AudioInputStream object based on the audio file data contained in the input stream.
* @throws UnsupportedAudioFileException - if the file does not point to valid MAC audio file data recognized by the system
* @throws IOException - if an I/O exception occurs
*/
public AudioInputStream getAudioInputStream(File file) throws UnsupportedAudioFileException, IOException {
InputStream inputStream = new FileInputStream(file);
try {
return getAudioInputStream(inputStream);
} catch (UnsupportedAudioFileException e) {
inputStream.close();
throw e;
} catch (IOException e) {
inputStream.close();
throw e;
}
}
/**
* Obtains the audio file format of the URL provided. The URL must point to valid MAC audio file data.
*
* @param url - the URL for which the AudioInputStream should be constructed
* @return an AudioInputStream object based on the audio file data contained in the input stream.
* @throws UnsupportedAudioFileException - if the URL does not point to valid MAC audio file data recognized by the system
* @throws IOException - if an I/O exception occurs
*/
public AudioInputStream getAudioInputStream(URL url) throws UnsupportedAudioFileException, IOException {
InputStream inputStream = url.openStream();
try {
return getAudioInputStream(inputStream);
} catch (UnsupportedAudioFileException e) {
inputStream.close();
throw e;
} catch (IOException e) {
inputStream.close();
throw e;
}
}
}