001 /*
002 GRANITE DATA SERVICES
003 Copyright (C) 2013 GRANITE DATA SERVICES S.A.S.
004
005 This file is part of Granite Data Services.
006
007 Granite Data Services is free software; you can redistribute it and/or modify
008 it under the terms of the GNU Library General Public License as published by
009 the Free Software Foundation; either version 2 of the License, or (at your
010 option) any later version.
011
012 Granite Data Services is distributed in the hope that it will be useful, but
013 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015 for more details.
016
017 You should have received a copy of the GNU Library General Public License
018 along with this library; if not, see <http://www.gnu.org/licenses/>.
019 */
020
021 package org.granite.messaging.jmf.codec.std.impl;
022
023 import java.io.IOException;
024 import java.io.OutputStream;
025
026 import org.granite.messaging.jmf.DumpContext;
027 import org.granite.messaging.jmf.InputContext;
028 import org.granite.messaging.jmf.OutputContext;
029 import org.granite.messaging.jmf.codec.std.DoubleCodec;
030
031 /**
032 * @author Franck WOLFF
033 */
034 public class DoubleCodecImpl extends AbstractStandardCodec<Double> implements DoubleCodec {
035
036 public int getObjectType() {
037 return JMF_DOUBLE_OBJECT;
038 }
039
040 public Class<?> getObjectClass() {
041 return Double.class;
042 }
043
044 public int getPrimitiveType() {
045 return JMF_DOUBLE;
046 }
047
048 public Class<?> getPrimitiveClass() {
049 return Double.TYPE;
050 }
051
052 public void encode(OutputContext ctx, Double v) throws IOException {
053 writeDoubleData(ctx, JMF_DOUBLE_OBJECT, v.doubleValue());
054 }
055
056 public Double decode(InputContext ctx, int parameterizedJmfType) throws IOException {
057 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
058
059 if (jmfType != JMF_DOUBLE_OBJECT)
060 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
061
062 return Double.valueOf(readDoubleData(ctx, parameterizedJmfType));
063 }
064
065 public void encodePrimitive(OutputContext ctx, double v) throws IOException {
066 writeDoubleData(ctx, JMF_DOUBLE, v);
067 }
068
069 public double decodePrimitive(InputContext ctx) throws IOException {
070 int parameterizedJmfType = ctx.safeRead();
071 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
072
073 if (jmfType != JMF_DOUBLE)
074 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
075
076 return readDoubleData(ctx, parameterizedJmfType);
077 }
078
079 public void dump(DumpContext ctx, int parameterizedJmfType) throws IOException {
080 int jmfType = ctx.getSharedContext().getCodecRegistry().extractJmfType(parameterizedJmfType);
081
082 switch (jmfType) {
083 case JMF_DOUBLE:
084 ctx.indentPrintLn("double: " + readDoubleData(ctx, parameterizedJmfType));
085 break;
086 case JMF_DOUBLE_OBJECT:
087 ctx.indentPrintLn(Double.class.getName() + ": " + Double.valueOf(readDoubleData(ctx, parameterizedJmfType)));
088 break;
089 default:
090 throw newBadTypeJMFEncodingException(jmfType, parameterizedJmfType);
091 }
092 }
093
094 public static void writeDoubleData(OutputContext ctx, int jmfType, double v) throws IOException {
095 final OutputStream os = ctx.getOutputStream();
096
097 if (v == (float)v || Double.isNaN(v)) {
098 os.write(0x80 | jmfType);
099
100 int bits = Float.floatToIntBits((float)v);
101 os.write(bits);
102 os.write(bits >> 8);
103 os.write(bits >> 16);
104 os.write(bits >> 24);
105 }
106 else {
107 os.write(jmfType);
108
109 long bits = Double.doubleToLongBits(v);
110 os.write((int)bits);
111 os.write((int)(bits >> 8));
112 os.write((int)(bits >> 16));
113 os.write((int)(bits >> 24));
114 os.write((int)(bits >> 32));
115 os.write((int)(bits >> 40));
116 os.write((int)(bits >> 48));
117 os.write((int)(bits >> 56));
118 }
119 }
120
121 public static double readDoubleData(InputContext ctx, int type) throws IOException {
122 double v = 0.0;
123
124 if ((type & 0x80) != 0) {
125 int i = ctx.safeRead();
126 i |= ctx.safeRead() << 8;
127 i |= ctx.safeRead() << 16;
128 i |= ctx.safeRead() << 24;
129 v = Float.intBitsToFloat(i);
130 }
131 else {
132 long l = ctx.safeRead();
133 l |= ((long)ctx.safeRead()) << 8;
134 l |= ((long)ctx.safeRead()) << 16;
135 l |= ((long)ctx.safeRead()) << 24;
136 l |= ((long)ctx.safeRead()) << 32;
137 l |= ((long)ctx.safeRead()) << 40;
138 l |= ((long)ctx.safeRead()) << 48;
139 l |= ((long)ctx.safeRead()) << 56;
140 v = Double.longBitsToDouble(l);
141 }
142
143 return v;
144 }
145 }