1 /* FloatBufferImpl.java --
2 Copyright (C) 2002 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
40 import java.nio.ByteBuffer;
41 import java.nio.CharBuffer;
42 import java.nio.DoubleBuffer;
43 import java.nio.FloatBuffer;
44 import java.nio.IntBuffer;
45 import java.nio.LongBuffer;
46 import java.nio.ShortBuffer;
48 public final class FloatBufferImpl extends FloatBuffer
50 private int array_offset;
53 public FloatBufferImpl(int cap, int off, int lim)
55 this.backing_buffer = new float[cap];
61 public FloatBufferImpl(float[] array, int off, int lim)
63 this.backing_buffer = array;
64 this.cap = array.length;
69 public FloatBufferImpl(FloatBufferImpl copy)
71 backing_buffer = copy.backing_buffer;
74 position(copy.position());
79 position(position() + a);
82 FloatBufferImpl(byte[] copy) { this.backing_buffer = copy != null ? nio_cast (copy) : null; }
83 private static native byte nio_get_Byte (FloatBufferImpl b, int index, int limit);
84 private static native void nio_put_Byte (FloatBufferImpl b, int index, int limit, byte value);
86 public ByteBuffer asByteBuffer()
88 ByteBufferImpl res = new ByteBufferImpl (backing_buffer);
89 res.limit ((limit () * 1) / 4);
93 FloatBufferImpl(char[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
94 private static native char nio_get_Char(FloatBufferImpl b, int index, int limit);
95 private static native void nio_put_Char(FloatBufferImpl b, int index, int limit, char value);
96 public CharBuffer asCharBuffer() { CharBufferImpl res = new CharBufferImpl(backing_buffer); res.limit((limit()*2)/4); return res; }
98 FloatBufferImpl(short[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
99 private static native short nio_get_Short(FloatBufferImpl b, int index, int limit);
100 private static native void nio_put_Short(FloatBufferImpl b, int index, int limit, short value);
101 public ShortBuffer asShortBuffer() { ShortBufferImpl res = new ShortBufferImpl(backing_buffer); res.limit((limit()*2)/4); return res; }
103 FloatBufferImpl(int[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
104 private static native int nio_get_Int(FloatBufferImpl b, int index, int limit);
105 private static native void nio_put_Int(FloatBufferImpl b, int index, int limit, int value);
106 public IntBuffer asIntBuffer() { IntBufferImpl res = new IntBufferImpl(backing_buffer); res.limit((limit()*4)/4); return res; }
108 FloatBufferImpl(long[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
109 private static native long nio_get_Long(FloatBufferImpl b, int index, int limit);
110 private static native void nio_put_Long(FloatBufferImpl b, int index, int limit, long value);
111 public LongBuffer asLongBuffer() { LongBufferImpl res = new LongBufferImpl(backing_buffer); res.limit((limit()*8)/4); return res; }
113 FloatBufferImpl(float[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
114 private static native float nio_get_Float(FloatBufferImpl b, int index, int limit);
115 private static native void nio_put_Float(FloatBufferImpl b, int index, int limit, float value);
116 public FloatBuffer asFloatBuffer() { FloatBufferImpl res = new FloatBufferImpl(backing_buffer); res.limit((limit()*4)/4); return res; }
118 FloatBufferImpl(double[] copy) { this.backing_buffer = copy != null ? nio_cast(copy) : null; }
119 private static native double nio_get_Double(FloatBufferImpl b, int index, int limit);
120 private static native void nio_put_Double(FloatBufferImpl b, int index, int limit, double value);
121 public DoubleBuffer asDoubleBuffer() { DoubleBufferImpl res = new DoubleBufferImpl(backing_buffer); res.limit((limit()*8)/4); return res; }
123 private static native float[] nio_cast(byte[]copy);
124 private static native float[] nio_cast(char[]copy);
125 private static native float[] nio_cast(short[]copy);
126 private static native float[] nio_cast(long[]copy);
127 private static native float[] nio_cast(int[]copy);
128 private static native float[] nio_cast(float[]copy);
129 private static native float[] nio_cast(double[]copy);
131 public boolean isReadOnly()
136 public FloatBuffer slice()
138 FloatBufferImpl A = new FloatBufferImpl(this);
139 A.array_offset = position();
143 public FloatBuffer duplicate()
145 return new FloatBufferImpl(this);
148 public FloatBuffer asReadOnlyBuffer()
150 FloatBufferImpl a = new FloatBufferImpl(this);
155 public FloatBuffer compact()
160 public boolean isDirect()
162 return backing_buffer != null;
165 final public float get()
167 float e = backing_buffer[position()];
168 position(position()+1);
172 final public FloatBuffer put(float b)
174 backing_buffer[position()] = b;
175 position(position()+1);
179 final public float get(int index)
181 return backing_buffer[index];
184 final public FloatBuffer put(int index, float b)
186 backing_buffer[index] = b;
190 final public char getChar() { char a = nio_get_Char(this, position(), limit()); inc_pos(2); return a; } final public FloatBuffer putChar(char value) { nio_put_Char(this, position(), limit(), value); inc_pos(2); return this; } final public char getChar(int index) { char a = nio_get_Char(this, index, limit()); return a; } final public FloatBuffer putChar(int index, char value) { nio_put_Char(this, index, limit(), value); return this; };
191 final public short getShort() { short a = nio_get_Short(this, position(), limit()); inc_pos(2); return a; } final public FloatBuffer putShort(short value) { nio_put_Short(this, position(), limit(), value); inc_pos(2); return this; } final public short getShort(int index) { short a = nio_get_Short(this, index, limit()); return a; } final public FloatBuffer putShort(int index, short value) { nio_put_Short(this, index, limit(), value); return this; };
192 final public int getInt() { int a = nio_get_Int(this, position(), limit()); inc_pos(4); return a; } final public FloatBuffer putInt(int value) { nio_put_Int(this, position(), limit(), value); inc_pos(4); return this; } final public int getInt(int index) { int a = nio_get_Int(this, index, limit()); return a; } final public FloatBuffer putInt(int index, int value) { nio_put_Int(this, index, limit(), value); return this; };
193 final public long getLong() { long a = nio_get_Long(this, position(), limit()); inc_pos(8); return a; } final public FloatBuffer putLong(long value) { nio_put_Long(this, position(), limit(), value); inc_pos(8); return this; } final public long getLong(int index) { long a = nio_get_Long(this, index, limit()); return a; } final public FloatBuffer putLong(int index, long value) { nio_put_Long(this, index, limit(), value); return this; };
194 final public float getFloat() { return get(); } final public FloatBuffer putFloat(float value) { return put(value); } final public float getFloat(int index) { return get(index); } final public FloatBuffer putFloat(int index, float value) { return put(index, value); };
195 final public double getDouble() { double a = nio_get_Double(this, position(), limit()); inc_pos(8); return a; } final public FloatBuffer putDouble(double value) { nio_put_Double(this, position(), limit(), value); inc_pos(8); return this; } final public double getDouble(int index) { double a = nio_get_Double(this, index, limit()); return a; } final public FloatBuffer putDouble(int index, double value) { nio_put_Double(this, index, limit(), value); return this; };