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authormark <mark@138bc75d-0d04-0410-961f-82ee72b054a4>2006-08-14 23:12:35 +0000
committermark <mark@138bc75d-0d04-0410-961f-82ee72b054a4>2006-08-14 23:12:35 +0000
commitffde862e033a0825e1e9972a89c0f1f80b261a8e (patch)
tree97037d2c09c8384d80531f67ec36a01205df6bdb /libjava/classpath/gnu/javax/sound/midi/file/MidiFileReader.java
parentb415ff10527e977c3758234fd930e2c027bfa17d (diff)
downloadppe42-gcc-ffde862e033a0825e1e9972a89c0f1f80b261a8e.tar.gz
ppe42-gcc-ffde862e033a0825e1e9972a89c0f1f80b261a8e.zip
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. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116139 138bc75d-0d04-0410-961f-82ee72b054a4
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+/* MidiFileReader.java -- Read MIDI files.
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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, or (at your option)
+any later version.
+
+GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.javax.sound.midi.file;
+
+import java.io.DataInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+
+import javax.sound.midi.InvalidMidiDataException;
+import javax.sound.midi.MetaMessage;
+import javax.sound.midi.MidiEvent;
+import javax.sound.midi.MidiFileFormat;
+import javax.sound.midi.MidiMessage;
+import javax.sound.midi.Sequence;
+import javax.sound.midi.ShortMessage;
+import javax.sound.midi.SysexMessage;
+import javax.sound.midi.Track;
+
+/**
+ * A MIDI file reader.
+ *
+ * This code reads MIDI file types 0 and 1.
+ *
+ * There are many decent documents on the web describing the MIDI file
+ * format. I didn't bother looking for the official document. If it
+ * exists, I'm not even sure if it is freely available. We should
+ * update this comment if we find out anything helpful here.
+ *
+ * @author Anthony Green (green@redhat.com)
+ *
+ */
+public class MidiFileReader extends javax.sound.midi.spi.MidiFileReader
+{
+ /* Get the MidiFileFormat for the given input stream.
+ * @see javax.sound.midi.spi.MidiFileReader#getMidiFileFormat(java.io.InputStream)
+ */
+ public MidiFileFormat getMidiFileFormat(InputStream in)
+ throws InvalidMidiDataException, IOException
+ {
+ DataInputStream din;
+ if (in instanceof DataInputStream)
+ din = (DataInputStream) in;
+ else
+ din = new DataInputStream(in);
+
+ int type, ntracks, division, resolution, bytes;
+ float divisionType;
+
+ if (din.readInt() != 0x4d546864) // "MThd"
+ throw new InvalidMidiDataException("Invalid MIDI chunk header.");
+
+ bytes = din.readInt();
+ if (bytes < 6)
+ throw new
+ InvalidMidiDataException("Invalid MIDI chunk header length: " + bytes);
+
+ type = din.readShort();
+ if (type < 0 || type > 2)
+ throw new
+ InvalidMidiDataException("Invalid MIDI file type value: " + type);
+
+ ntracks = din.readShort();
+ if (ntracks <= 0)
+ throw new
+ InvalidMidiDataException("Invalid number of MIDI tracks: " + ntracks);
+
+ division = din.readShort();
+ if ((division & 0x8000) != 0)
+ {
+ division = -((division >>> 8) & 0xFF);
+ switch (division)
+ {
+ case 24:
+ divisionType = Sequence.SMPTE_24;
+ break;
+
+ case 25:
+ divisionType = Sequence.SMPTE_25;
+ break;
+
+ case 29:
+ divisionType = Sequence.SMPTE_30DROP;
+ break;
+
+ case 30:
+ divisionType = Sequence.SMPTE_30;
+ break;
+
+ default:
+ throw new
+ InvalidMidiDataException("Invalid MIDI frame division type: "
+ + division);
+ }
+ resolution = division & 0xff;
+ }
+ else
+ {
+ divisionType = Sequence.PPQ;
+ resolution = division & 0x7fff;
+ }
+
+ // If we haven't read every byte in the header now, just skip the rest.
+ din.skip(bytes - 6);
+
+ return new ExtendedMidiFileFormat(type, divisionType, resolution,
+ MidiFileFormat.UNKNOWN_LENGTH,
+ MidiFileFormat.UNKNOWN_LENGTH, ntracks);
+ }
+
+ /* Get the MidiFileFormat from the given URL.
+ * @see javax.sound.midi.spi.MidiFileReader#getMidiFileFormat(java.net.URL)
+ */
+ public MidiFileFormat getMidiFileFormat(URL url)
+ throws InvalidMidiDataException, IOException
+ {
+ InputStream is = url.openStream();
+ try
+ {
+ return getMidiFileFormat(is);
+ }
+ finally
+ {
+ is.close();
+ }
+ }
+
+ /* Get the MidiFileFormat from the given file.
+ * @see javax.sound.midi.spi.MidiFileReader#getMidiFileFormat(java.io.File)
+ */
+ public MidiFileFormat getMidiFileFormat(File file)
+ throws InvalidMidiDataException, IOException
+ {
+ InputStream is = new FileInputStream(file);
+ try
+ {
+ return getMidiFileFormat(is);
+ }
+ finally
+ {
+ is.close();
+ }
+ }
+
+ /* Get the MIDI Sequence found in this input stream.
+ * @see javax.sound.midi.spi.MidiFileReader#getSequence(java.io.InputStream)
+ */
+ public Sequence getSequence(InputStream is) throws InvalidMidiDataException,
+ IOException
+ {
+ MidiDataInputStream din = new MidiDataInputStream(is);
+ ExtendedMidiFileFormat mff = (ExtendedMidiFileFormat) getMidiFileFormat(din);
+
+ Sequence seq = new Sequence(mff.getDivisionType(), mff.getResolution());
+
+ int ntracks = mff.getNumberTracks();
+
+ while (ntracks-- > 0)
+ {
+ Track track = seq.createTrack();
+ int Mtrk = din.readInt();
+ if (Mtrk != 0x4d54726b)
+ throw new InvalidMidiDataException("Invalid MIDI track header.");
+ int length = din.readInt();
+
+ int runningStatus = -1;
+ int click = 0;
+
+ // Set this to true when we've hit an End of Track meta event.
+ boolean done = false;
+
+ // Read all events.
+ while (! done)
+ {
+ MidiMessage mm;
+ int dtime = din.readVariableLengthInt();
+ click += dtime;
+
+ int sbyte = din.readUnsignedByte();
+
+ if (sbyte < 0xf0)
+ {
+ ShortMessage sm;
+ switch (sbyte & 0xf0)
+ {
+ case ShortMessage.NOTE_OFF:
+ case ShortMessage.NOTE_ON:
+ case ShortMessage.POLY_PRESSURE:
+ case ShortMessage.CONTROL_CHANGE:
+ case ShortMessage.PITCH_BEND:
+ case ShortMessage.SONG_POSITION_POINTER:
+ sm = new ShortMessage();
+ sm.setMessage(sbyte, din.readByte(), din.readByte());
+ runningStatus = sbyte;
+ break;
+
+ case ShortMessage.PROGRAM_CHANGE:
+ case ShortMessage.CHANNEL_PRESSURE:
+ case ShortMessage.SONG_SELECT:
+ case 0xF5: // FIXME: unofficial bus select. Not in spec??
+ sm = new ShortMessage();
+ sm.setMessage(sbyte, din.readByte(), 0);
+ runningStatus = sbyte;
+ break;
+
+ case ShortMessage.TUNE_REQUEST:
+ case ShortMessage.END_OF_EXCLUSIVE:
+ case ShortMessage.TIMING_CLOCK:
+ case ShortMessage.START:
+ case ShortMessage.CONTINUE:
+ case ShortMessage.STOP:
+ case ShortMessage.ACTIVE_SENSING:
+ case ShortMessage.SYSTEM_RESET:
+ sm = new ShortMessage();
+ sm.setMessage(sbyte, 0, 0);
+ runningStatus = sbyte;
+ break;
+
+ default:
+ if (runningStatus != - 1)
+ {
+ switch (runningStatus & 0xf0)
+ {
+ case ShortMessage.NOTE_OFF:
+ case ShortMessage.NOTE_ON:
+ case ShortMessage.POLY_PRESSURE:
+ case ShortMessage.CONTROL_CHANGE:
+ case ShortMessage.PITCH_BEND:
+ case ShortMessage.SONG_POSITION_POINTER:
+ sm = new ShortMessage();
+ sm.setMessage(runningStatus, sbyte, din.readByte());
+ break;
+
+ case ShortMessage.PROGRAM_CHANGE:
+ case ShortMessage.CHANNEL_PRESSURE:
+ case ShortMessage.SONG_SELECT:
+ case 0xF5: // FIXME: unofficial bus select. Not in
+ // spec??
+ sm = new ShortMessage();
+ sm.setMessage(runningStatus, sbyte, 0);
+ continue;
+
+ case ShortMessage.TUNE_REQUEST:
+ case ShortMessage.END_OF_EXCLUSIVE:
+ case ShortMessage.TIMING_CLOCK:
+ case ShortMessage.START:
+ case ShortMessage.CONTINUE:
+ case ShortMessage.STOP:
+ case ShortMessage.ACTIVE_SENSING:
+ case ShortMessage.SYSTEM_RESET:
+ sm = new ShortMessage();
+ sm.setMessage(runningStatus, 0, 0);
+ continue;
+
+ default:
+ throw new
+ InvalidMidiDataException("Invalid Short MIDI Event: "
+ + sbyte);
+ }
+ }
+ else
+ throw new
+ InvalidMidiDataException("Invalid Short MIDI Event: "
+ + sbyte);
+ }
+ mm = sm;
+ }
+ else if (sbyte == 0xf0 || sbyte == 0xf7)
+ {
+ // System Exclusive event
+ int slen = din.readVariableLengthInt();
+ byte sysex[] = new byte[slen];
+ din.readFully(sysex);
+ SysexMessage sm = new SysexMessage();
+ sm.setMessage(sbyte, sysex, slen);
+ mm = sm;
+ runningStatus = - 1;
+ }
+ else if (sbyte == 0xff)
+ {
+ // Meta Message
+ byte mtype = din.readByte();
+ int mlen = din.readVariableLengthInt();
+ byte meta[] = new byte[mlen];
+ din.readFully(meta);
+ MetaMessage metam = new MetaMessage();
+ metam.setMessage(mtype, meta, mlen);
+ mm = metam;
+
+ if (mtype == 0x2f) // End of Track
+ done = true;
+
+ runningStatus = - 1;
+ }
+ else
+ {
+ throw new InvalidMidiDataException("Invalid status byte: "
+ + sbyte);
+ }
+
+ track.add(new MidiEvent(mm, click));
+ }
+ }
+
+ return seq;
+ }
+
+ /* Get the MIDI Sequence found at the given URL.
+ * @see javax.sound.midi.spi.MidiFileReader#getSequence(java.net.URL)
+ */
+ public Sequence getSequence(URL url) throws InvalidMidiDataException,
+ IOException
+ {
+ InputStream is = url.openStream();
+ try
+ {
+ return getSequence(is);
+ }
+ finally
+ {
+ is.close();
+ }
+ }
+
+ /* Get the MIDI Sequence found in the given file.
+ * @see javax.sound.midi.spi.MidiFileReader#getSequence(java.io.File)
+ */
+ public Sequence getSequence(File file) throws InvalidMidiDataException,
+ IOException
+ {
+ InputStream is = new FileInputStream(file);
+ try
+ {
+ return getSequence(is);
+ }
+ finally
+ {
+ is.close();
+ }
+ }
+}
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