ac1ed908de
2006-08-14 Mark Wielaard <mark@klomp.org>
Imported GNU Classpath 0.92
* HACKING: Add more importing hints. Update automake version
requirement.
* configure.ac (gconf-peer): New enable AC argument.
Add --disable-gconf-peer and --enable-default-preferences-peer
to classpath configure when gconf is disabled.
* scripts/makemake.tcl: Set gnu/java/util/prefs/gconf and
gnu/java/awt/dnd/peer/gtk to bc. Classify
gnu/java/security/Configuration.java as generated source file.
* gnu/java/lang/management/VMGarbageCollectorMXBeanImpl.java,
gnu/java/lang/management/VMMemoryPoolMXBeanImpl.java,
gnu/java/lang/management/VMClassLoadingMXBeanImpl.java,
gnu/java/lang/management/VMRuntimeMXBeanImpl.java,
gnu/java/lang/management/VMMemoryManagerMXBeanImpl.java,
gnu/java/lang/management/VMThreadMXBeanImpl.java,
gnu/java/lang/management/VMMemoryMXBeanImpl.java,
gnu/java/lang/management/VMCompilationMXBeanImpl.java: New VM stub
classes.
* java/lang/management/VMManagementFactory.java: Likewise.
* java/net/VMURLConnection.java: Likewise.
* gnu/java/nio/VMChannel.java: Likewise.
* java/lang/Thread.java (getState): Add stub implementation.
* java/lang/Class.java (isEnum): Likewise.
* java/lang/Class.h (isEnum): Likewise.
* gnu/awt/xlib/XToolkit.java (getClasspathTextLayoutPeer): Removed.
* javax/naming/spi/NamingManager.java: New override for StackWalker
functionality.
* configure, sources.am, Makefile.in, gcj/Makefile.in,
include/Makefile.in, testsuite/Makefile.in: Regenerated.
From-SVN: r116139
378 lines
12 KiB
Java
378 lines
12 KiB
Java
/* MidiFileReader.java -- Read MIDI files.
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.sound.midi.file;
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import java.io.DataInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import javax.sound.midi.InvalidMidiDataException;
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import javax.sound.midi.MetaMessage;
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import javax.sound.midi.MidiEvent;
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import javax.sound.midi.MidiFileFormat;
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import javax.sound.midi.MidiMessage;
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import javax.sound.midi.Sequence;
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import javax.sound.midi.ShortMessage;
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import javax.sound.midi.SysexMessage;
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import javax.sound.midi.Track;
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/**
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* A MIDI file reader.
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*
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* This code reads MIDI file types 0 and 1.
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*
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* There are many decent documents on the web describing the MIDI file
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* format. I didn't bother looking for the official document. If it
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* exists, I'm not even sure if it is freely available. We should
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* update this comment if we find out anything helpful here.
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*
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* @author Anthony Green (green@redhat.com)
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*
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*/
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public class MidiFileReader extends javax.sound.midi.spi.MidiFileReader
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{
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/* Get the MidiFileFormat for the given input stream.
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* @see javax.sound.midi.spi.MidiFileReader#getMidiFileFormat(java.io.InputStream)
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*/
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public MidiFileFormat getMidiFileFormat(InputStream in)
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throws InvalidMidiDataException, IOException
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{
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DataInputStream din;
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if (in instanceof DataInputStream)
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din = (DataInputStream) in;
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else
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din = new DataInputStream(in);
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int type, ntracks, division, resolution, bytes;
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float divisionType;
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if (din.readInt() != 0x4d546864) // "MThd"
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throw new InvalidMidiDataException("Invalid MIDI chunk header.");
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bytes = din.readInt();
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if (bytes < 6)
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throw new
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InvalidMidiDataException("Invalid MIDI chunk header length: " + bytes);
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type = din.readShort();
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if (type < 0 || type > 2)
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throw new
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InvalidMidiDataException("Invalid MIDI file type value: " + type);
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ntracks = din.readShort();
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if (ntracks <= 0)
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throw new
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InvalidMidiDataException("Invalid number of MIDI tracks: " + ntracks);
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division = din.readShort();
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if ((division & 0x8000) != 0)
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{
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division = -((division >>> 8) & 0xFF);
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switch (division)
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{
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case 24:
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divisionType = Sequence.SMPTE_24;
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break;
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case 25:
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divisionType = Sequence.SMPTE_25;
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break;
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case 29:
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divisionType = Sequence.SMPTE_30DROP;
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break;
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case 30:
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divisionType = Sequence.SMPTE_30;
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break;
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default:
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throw new
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InvalidMidiDataException("Invalid MIDI frame division type: "
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+ division);
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}
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resolution = division & 0xff;
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}
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else
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{
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divisionType = Sequence.PPQ;
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resolution = division & 0x7fff;
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}
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// If we haven't read every byte in the header now, just skip the rest.
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din.skip(bytes - 6);
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return new ExtendedMidiFileFormat(type, divisionType, resolution,
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MidiFileFormat.UNKNOWN_LENGTH,
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MidiFileFormat.UNKNOWN_LENGTH, ntracks);
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}
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/* Get the MidiFileFormat from the given URL.
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* @see javax.sound.midi.spi.MidiFileReader#getMidiFileFormat(java.net.URL)
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*/
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public MidiFileFormat getMidiFileFormat(URL url)
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throws InvalidMidiDataException, IOException
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{
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InputStream is = url.openStream();
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try
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{
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return getMidiFileFormat(is);
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}
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finally
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{
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is.close();
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}
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}
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/* Get the MidiFileFormat from the given file.
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* @see javax.sound.midi.spi.MidiFileReader#getMidiFileFormat(java.io.File)
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*/
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public MidiFileFormat getMidiFileFormat(File file)
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throws InvalidMidiDataException, IOException
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{
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InputStream is = new FileInputStream(file);
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try
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{
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return getMidiFileFormat(is);
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}
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finally
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{
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is.close();
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}
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}
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/* Get the MIDI Sequence found in this input stream.
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* @see javax.sound.midi.spi.MidiFileReader#getSequence(java.io.InputStream)
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*/
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public Sequence getSequence(InputStream is) throws InvalidMidiDataException,
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IOException
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{
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MidiDataInputStream din = new MidiDataInputStream(is);
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ExtendedMidiFileFormat mff = (ExtendedMidiFileFormat) getMidiFileFormat(din);
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Sequence seq = new Sequence(mff.getDivisionType(), mff.getResolution());
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int ntracks = mff.getNumberTracks();
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while (ntracks-- > 0)
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{
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Track track = seq.createTrack();
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int Mtrk = din.readInt();
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if (Mtrk != 0x4d54726b)
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throw new InvalidMidiDataException("Invalid MIDI track header.");
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int length = din.readInt();
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int runningStatus = -1;
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int click = 0;
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// Set this to true when we've hit an End of Track meta event.
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boolean done = false;
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// Read all events.
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while (! done)
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{
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MidiMessage mm;
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int dtime = din.readVariableLengthInt();
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click += dtime;
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int sbyte = din.readUnsignedByte();
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if (sbyte < 0xf0)
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{
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ShortMessage sm;
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switch (sbyte & 0xf0)
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{
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case ShortMessage.NOTE_OFF:
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case ShortMessage.NOTE_ON:
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case ShortMessage.POLY_PRESSURE:
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case ShortMessage.CONTROL_CHANGE:
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case ShortMessage.PITCH_BEND:
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case ShortMessage.SONG_POSITION_POINTER:
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sm = new ShortMessage();
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sm.setMessage(sbyte, din.readByte(), din.readByte());
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runningStatus = sbyte;
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break;
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case ShortMessage.PROGRAM_CHANGE:
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case ShortMessage.CHANNEL_PRESSURE:
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case ShortMessage.SONG_SELECT:
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case 0xF5: // FIXME: unofficial bus select. Not in spec??
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sm = new ShortMessage();
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sm.setMessage(sbyte, din.readByte(), 0);
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runningStatus = sbyte;
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break;
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case ShortMessage.TUNE_REQUEST:
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case ShortMessage.END_OF_EXCLUSIVE:
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case ShortMessage.TIMING_CLOCK:
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case ShortMessage.START:
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case ShortMessage.CONTINUE:
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case ShortMessage.STOP:
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case ShortMessage.ACTIVE_SENSING:
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case ShortMessage.SYSTEM_RESET:
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sm = new ShortMessage();
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sm.setMessage(sbyte, 0, 0);
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runningStatus = sbyte;
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break;
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default:
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if (runningStatus != - 1)
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{
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switch (runningStatus & 0xf0)
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{
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case ShortMessage.NOTE_OFF:
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case ShortMessage.NOTE_ON:
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case ShortMessage.POLY_PRESSURE:
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case ShortMessage.CONTROL_CHANGE:
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case ShortMessage.PITCH_BEND:
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case ShortMessage.SONG_POSITION_POINTER:
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sm = new ShortMessage();
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sm.setMessage(runningStatus, sbyte, din.readByte());
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break;
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case ShortMessage.PROGRAM_CHANGE:
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case ShortMessage.CHANNEL_PRESSURE:
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case ShortMessage.SONG_SELECT:
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case 0xF5: // FIXME: unofficial bus select. Not in
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// spec??
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sm = new ShortMessage();
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sm.setMessage(runningStatus, sbyte, 0);
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continue;
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case ShortMessage.TUNE_REQUEST:
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case ShortMessage.END_OF_EXCLUSIVE:
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case ShortMessage.TIMING_CLOCK:
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case ShortMessage.START:
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case ShortMessage.CONTINUE:
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case ShortMessage.STOP:
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case ShortMessage.ACTIVE_SENSING:
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case ShortMessage.SYSTEM_RESET:
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sm = new ShortMessage();
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sm.setMessage(runningStatus, 0, 0);
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continue;
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default:
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throw new
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InvalidMidiDataException("Invalid Short MIDI Event: "
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+ sbyte);
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}
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}
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else
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throw new
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InvalidMidiDataException("Invalid Short MIDI Event: "
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+ sbyte);
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}
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mm = sm;
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}
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else if (sbyte == 0xf0 || sbyte == 0xf7)
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{
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// System Exclusive event
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int slen = din.readVariableLengthInt();
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byte sysex[] = new byte[slen];
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din.readFully(sysex);
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SysexMessage sm = new SysexMessage();
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sm.setMessage(sbyte, sysex, slen);
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mm = sm;
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runningStatus = - 1;
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}
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else if (sbyte == 0xff)
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{
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// Meta Message
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byte mtype = din.readByte();
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int mlen = din.readVariableLengthInt();
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byte meta[] = new byte[mlen];
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din.readFully(meta);
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MetaMessage metam = new MetaMessage();
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metam.setMessage(mtype, meta, mlen);
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mm = metam;
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if (mtype == 0x2f) // End of Track
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done = true;
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runningStatus = - 1;
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}
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else
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{
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throw new InvalidMidiDataException("Invalid status byte: "
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+ sbyte);
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}
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track.add(new MidiEvent(mm, click));
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}
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}
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return seq;
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}
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/* Get the MIDI Sequence found at the given URL.
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* @see javax.sound.midi.spi.MidiFileReader#getSequence(java.net.URL)
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*/
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public Sequence getSequence(URL url) throws InvalidMidiDataException,
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IOException
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{
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InputStream is = url.openStream();
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try
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{
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return getSequence(is);
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}
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finally
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{
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is.close();
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}
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}
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/* Get the MIDI Sequence found in the given file.
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* @see javax.sound.midi.spi.MidiFileReader#getSequence(java.io.File)
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*/
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public Sequence getSequence(File file) throws InvalidMidiDataException,
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IOException
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{
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InputStream is = new FileInputStream(file);
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try
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{
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return getSequence(is);
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}
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finally
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{
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is.close();
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}
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}
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}
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