| /* |
| * Copyright 1999-2002 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| package sun.audio; |
| |
| import java.io.InputStream; |
| import java.io.DataInputStream; |
| import java.io.FilterInputStream; |
| import java.io.ByteArrayInputStream; |
| import java.io.BufferedInputStream; |
| import java.io.IOException; |
| |
| import javax.sound.sampled.*; |
| import javax.sound.midi.*; |
| |
| /** |
| * Convert an InputStream to an AudioStream. |
| * |
| */ |
| |
| |
| public class AudioStream extends FilterInputStream { |
| |
| // AudioContainerInputStream acis; |
| protected AudioInputStream ais = null; |
| protected AudioFormat format = null; |
| protected MidiFileFormat midiformat = null; |
| protected InputStream stream = null; |
| |
| |
| /* |
| * create the AudioStream; if we survive without throwing |
| * an exception, we should now have some subclass of |
| * ACIS with all the header info already read |
| */ |
| |
| public AudioStream(InputStream in) throws IOException { |
| |
| super(in); |
| |
| stream = in; |
| |
| if( in.markSupported() == false ) { |
| |
| stream = new BufferedInputStream( in, 1024 ); |
| } |
| |
| try { |
| ais = AudioSystem.getAudioInputStream( stream ); |
| format = ais.getFormat(); |
| this.in = ais; |
| |
| } catch (UnsupportedAudioFileException e ) { |
| |
| // not an audio file, see if it's midi... |
| try { |
| midiformat = MidiSystem.getMidiFileFormat( stream ); |
| |
| } catch (InvalidMidiDataException e1) { |
| throw new IOException("could not create audio stream from input stream"); |
| } |
| } |
| } |
| |
| |
| |
| |
| /** |
| * A blocking read. |
| */ |
| /* public int read(byte buf[], int pos, int len) throws IOException { |
| |
| return(acis.readFully(buf, pos, len)); |
| } |
| */ |
| |
| /** |
| * Get the data. |
| */ |
| public AudioData getData() throws IOException { |
| int length = getLength(); |
| |
| //limit the memory to 1M, so too large au file won't load |
| if (length < 1024*1024) { |
| byte [] buffer = new byte[length]; |
| try { |
| ais.read(buffer, 0, length); |
| } catch (IOException ex) { |
| throw new IOException("Could not create AudioData Object"); |
| } |
| return new AudioData(format, buffer); |
| } |
| |
| /* acis.setData(); |
| |
| if (acis.stream instanceof ByteArrayInputStream) { |
| Format[] format = acis.getFormat(); |
| byte[] bytes = acis.getBytes(); |
| if (bytes == null) |
| throw new IOException("could not create AudioData object: no data received"); |
| return new AudioData((AudioFormat)format[0], bytes); |
| } |
| */ |
| |
| throw new IOException("could not create AudioData object"); |
| } |
| |
| |
| public int getLength() { |
| |
| if( ais != null && format != null ) { |
| return (int) (ais.getFrameLength() * |
| ais.getFormat().getFrameSize() ); |
| |
| } else if ( midiformat != null ) { |
| return (int) midiformat.getByteLength(); |
| |
| } else { |
| return -1; |
| } |
| } |
| } |