| /* |
| * Copyright (c) 2002, 2013, Oracle and/or its affiliates. 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.media.sound; |
| |
| import javax.sound.midi.*; |
| |
| /** |
| * an optimized ShortMessage that does not need an array |
| * |
| * @author Florian Bomers |
| */ |
| final class FastShortMessage extends ShortMessage { |
| private int packedMsg; |
| |
| FastShortMessage(int packedMsg) throws InvalidMidiDataException { |
| this.packedMsg = packedMsg; |
| getDataLength(packedMsg & 0xFF); // to check for validity |
| } |
| |
| /** Creates a FastShortMessage from this ShortMessage */ |
| FastShortMessage(ShortMessage msg) { |
| this.packedMsg = msg.getStatus() |
| | (msg.getData1() << 8) |
| | (msg.getData2() << 16); |
| } |
| |
| int getPackedMsg() { |
| return packedMsg; |
| } |
| |
| public byte[] getMessage() { |
| int length = 0; |
| try { |
| // fix for bug 4851018: MidiMessage.getLength and .getData return wrong values |
| // fix for bug 4890405: Reading MidiMessage byte array fails in 1.4.2 |
| length = getDataLength(packedMsg & 0xFF) + 1; |
| } catch (InvalidMidiDataException imde) { |
| // should never happen |
| } |
| byte[] returnedArray = new byte[length]; |
| if (length>0) { |
| returnedArray[0] = (byte) (packedMsg & 0xFF); |
| if (length>1) { |
| returnedArray[1] = (byte) ((packedMsg & 0xFF00) >> 8); |
| if (length>2) { |
| returnedArray[2] = (byte) ((packedMsg & 0xFF0000) >> 16); |
| } |
| } |
| } |
| return returnedArray; |
| } |
| |
| public int getLength() { |
| try { |
| return getDataLength(packedMsg & 0xFF) + 1; |
| } catch (InvalidMidiDataException imde) { |
| // should never happen |
| } |
| return 0; |
| } |
| |
| public void setMessage(int status) throws InvalidMidiDataException { |
| // check for valid values |
| int dataLength = getDataLength(status); // can throw InvalidMidiDataException |
| if (dataLength != 0) { |
| super.setMessage(status); // throws Exception |
| } |
| packedMsg = (packedMsg & 0xFFFF00) | (status & 0xFF); |
| } |
| |
| |
| public void setMessage(int status, int data1, int data2) throws InvalidMidiDataException { |
| getDataLength(status); // can throw InvalidMidiDataException |
| packedMsg = (status & 0xFF) | ((data1 & 0xFF) << 8) | ((data2 & 0xFF) << 16); |
| } |
| |
| |
| public void setMessage(int command, int channel, int data1, int data2) throws InvalidMidiDataException { |
| getDataLength(command); // can throw InvalidMidiDataException |
| packedMsg = (command & 0xF0) | (channel & 0x0F) | ((data1 & 0xFF) << 8) | ((data2 & 0xFF) << 16); |
| } |
| |
| |
| public int getChannel() { |
| return packedMsg & 0x0F; |
| } |
| |
| public int getCommand() { |
| return packedMsg & 0xF0; |
| } |
| |
| public int getData1() { |
| return (packedMsg & 0xFF00) >> 8; |
| } |
| |
| public int getData2() { |
| return (packedMsg & 0xFF0000) >> 16; |
| } |
| |
| public int getStatus() { |
| return packedMsg & 0xFF; |
| } |
| |
| /** |
| * Creates a new object of the same class and with the same contents |
| * as this object. |
| * @return a clone of this instance. |
| */ |
| public Object clone() { |
| try { |
| return new FastShortMessage(packedMsg); |
| } catch (InvalidMidiDataException imde) { |
| // should never happen |
| } |
| return null; |
| } |
| |
| } // class FastShortMsg |