aboutsummaryrefslogtreecommitdiff
path: root/libjava/classpath/javax/sound/midi/MetaMessage.java
diff options
context:
space:
mode:
Diffstat (limited to 'libjava/classpath/javax/sound/midi/MetaMessage.java')
-rw-r--r--libjava/classpath/javax/sound/midi/MetaMessage.java178
1 files changed, 0 insertions, 178 deletions
diff --git a/libjava/classpath/javax/sound/midi/MetaMessage.java b/libjava/classpath/javax/sound/midi/MetaMessage.java
deleted file mode 100644
index 0aab153..0000000
--- a/libjava/classpath/javax/sound/midi/MetaMessage.java
+++ /dev/null
@@ -1,178 +0,0 @@
-/* MetaMessage.java -- A meta message for MIDI files.
- Copyright (C) 2005 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 javax.sound.midi;
-
-/**
- * A system exclusive MIDI message.
- *
- * @author Anthony Green (green@redhat.com)
- * @since 1.3
- *
- */
-public class MetaMessage extends MidiMessage
-{
- /**
- * The META status code. Only valid for MIDI files, not the wire protocol.
- */
- public static final int META = 0xFF;
-
- // The length of the variable length data length encoding.
- private int lengthLength = 0;
-
- /**
- * Create a default valid meta message.
- *
- * The official specs don't specify what message is to be
- * created. For now, we create a zero length meta message
- * with a type code of 0.
- */
- public MetaMessage()
- {
- super(new byte[4]);
- data[0] = (byte) META;
- data[1] = (byte) 0; // Type
- data[2] = (byte) 1; // Length length
- data[3] = (byte) 0; // Length
- lengthLength = 1;
- }
-
- /**
- * Create a MetaMessage object.
- * @param data a complete system exclusive message
- */
- protected MetaMessage(byte[] data)
- {
- super(data);
- int index = 2;
- lengthLength = 1;
- while ((data[index++] & 0x80) > 0)
- lengthLength++;
- }
-
- /**
- * Set the meta message.
- *
- * @param type the meta type byte (< 128)
- * @param data the message data
- * @param length the length of the message data
- * @throws InvalidMidiDataException if this message is invalid
- */
- public void setMessage(int type, byte[] data, int length)
- throws InvalidMidiDataException
- {
- if (type > 127)
- throw new InvalidMidiDataException("Meta type 0x"
- + Integer.toHexString(type)
- + " must be less than 128");
-
- // For a nice description of how variable length values are handled,
- // see http://www.borg.com/~jglatt/tech/midifile.htm
-
- // First compute the length of the length value
- lengthLength = 0;
- int lengthValue = length;
- do {
- lengthValue = lengthValue >> 7;
- lengthLength++;
- } while (lengthValue > 0);
-
- // Now allocate our data array
- this.length = 2 + lengthLength + length;
- this.data = new byte[this.length];
- this.data[0] = (byte) META;
- this.data[1] = (byte) type;
-
- // Now compute the length representation
- long buffer = length & 0x7F;
- // Avoid altering length variable; PR42551
- lengthValue = length;
- while ((lengthValue >>= 7) > 0)
- {
- buffer <<= 8;
- buffer |= ((lengthValue & 0x7F) | 0x80);
- }
-
- // Now store the variable length length value
- int index = 2;
- do
- {
- this.data[index++] = (byte) (buffer & 0xFF);
- if ((buffer & 0x80) == 0)
- break;
- buffer >>= 8;
- } while (true);
-
- // Now copy the real data.
- System.arraycopy(data, 0, this.data, index, length);
- }
-
- /**
- * Get the meta message type.
- *
- * @return the meta message type
- */
- public int getType()
- {
- return data[1];
- }
-
- /**
- * Get the data for this message, not including the status,
- * type, or length information.
- *
- * @return the message data, not including status, type or lenght info
- */
- public byte[] getData()
- {
- int dataLength = length - 2 - lengthLength;
- byte[] result = new byte[dataLength];
- System.arraycopy(data, 2 + lengthLength, result, 0, dataLength);
- return result;
- }
-
- /* Create a deep-copy clone of this object.
- * @see java.lang.Object#clone()
- */
- public Object clone()
- {
- byte message[] = new byte[length];
- System.arraycopy(data, 0, message, 0, length);
- return new MetaMessage(message);
- }
-}