| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package javax.sound.midi; |
| |
| import org.apache.harmony.sound.internal.nls.Messages; |
| |
| public class MetaMessage extends MidiMessage { |
| public static final int META = 255; |
| |
| private int dsp; //displacement from begin of array that |
| //return by method getData() from begin |
| //of array that contain data |
| |
| public MetaMessage() { |
| super(new byte[] {-1, 0}); |
| } |
| |
| protected MetaMessage(byte[] data) { |
| super(data); |
| if (data == null) { |
| throw new NullPointerException(); |
| } |
| if (super.length > 3) { |
| int n = 3; |
| while ((n <= super.length) && (super.data[n - 1] < 0)) { |
| n++; |
| } |
| dsp = n; |
| } |
| } |
| |
| @Override |
| public Object clone() { |
| return new MetaMessage(this.getMessage()); |
| } |
| |
| public byte[] getData() { |
| if ((super.data != null) && (super.length > 3)) { |
| byte[] bt = new byte[super.length - dsp]; |
| for (int i = dsp; i < super.length; i++) { |
| bt[i - dsp] = super.data[i]; |
| } |
| return bt; |
| } |
| return new byte[0]; |
| } |
| |
| public int getType() { |
| if ((super.data != null) && (super.length >= 2)) { |
| return super.data[1] & 0xFF; |
| } |
| return 0; |
| } |
| |
| public void setMessage(int type, byte[] data, int length) throws InvalidMidiDataException { |
| if (type < 0 || type >= 128) { |
| // sound.0A=Invalid meta event with type {0} |
| throw new InvalidMidiDataException(Messages.getString("sound.0A", type)); //$NON-NLS-1$ |
| } |
| if (length < 0 || (data != null && length > data.length)) { |
| // sound.03=length out of bounds: {0} |
| throw new InvalidMidiDataException(Messages.getString("sound.03", length)); //$NON-NLS-1$ |
| } |
| try { |
| if (data == null) { |
| if (length != 0) { |
| throw new NullPointerException(); |
| } |
| super.setMessage(new byte[] { -1, (byte) type, 0 }, 3); |
| } else { |
| int div = 128; |
| int n = 1; |
| int ost; |
| int sm = 0; |
| while (length / div != 0) { |
| n++; |
| div *= 128; |
| } |
| int ln = n; |
| byte[] tdata = new byte[length + ln + 2]; |
| div = 1; |
| ost = (length / div) % 128; |
| while (n != 0) { |
| tdata[n - 1 + 2] = (byte) (ost + sm); |
| n--; |
| div *= 128; |
| ost = (length / div) % 128; |
| sm = 128; |
| } |
| tdata[0] = -1; |
| tdata[1] = (byte) type; |
| if (length > 0) { |
| for (int i = 0; i < length; i++) { |
| tdata[2 + ln + i] = data[i]; |
| } |
| } |
| super.setMessage(tdata, length + 2 + ln); |
| dsp = ln + 2; |
| } |
| } catch (InvalidMidiDataException e) { |
| throw e; |
| } |
| } |
| } |