Android ByteBuffer Create copy(float[] src, ByteBuffer dst, int numFloats, int offset)

Description

copy

License

Apache License

Declaration

public static void copy(float[] src, ByteBuffer dst, int numFloats,
            int offset) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2011 See AUTHORS file.//w ww  . ja  v a2 s .  c  o m
 * 
 * Licensed 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.
 ******************************************************************************/

import java.nio.ByteBuffer;

import java.nio.FloatBuffer;
import java.nio.IntBuffer;

import java.nio.ShortBuffer;

public class Main {
    public static void copy(float[] src, ByteBuffer dst, int numFloats,
            int offset) {
        dst.clear();

        dst.limit(numFloats << 2);

        for (int i = offset; i < offset + numFloats && i < src.length; i++) {
            dst.put(toByta(Float.floatToRawIntBits(src[i])));
        }

        dst.flip();
    }

    public static void copy(float[] src, FloatBuffer dst, int numFloats,
            int offset) {
        dst.clear();

        dst.limit(numFloats);

        dst.put(src, offset, numFloats);

        dst.flip();
    }

    public static void copy(float[] src, IntBuffer dst, int numFloats,
            int offset) {
        dst.clear();

        dst.limit(numFloats);

        for (int i = offset; i < offset + numFloats && i < src.length; i++) {
            dst.put(Float.floatToRawIntBits(src[i]));
        }

        dst.flip();
    }

    public static void copy(short[] src, ShortBuffer dst, int numShorts,
            int offset) {
        dst.clear();

        dst.limit(numShorts);

        dst.put(src, offset, numShorts);

        dst.flip();
    }

    public static byte[] toByta(int data) {
        return new byte[] { (byte) ((data >> 24) & 0xff),
                (byte) ((data >> 16) & 0xff), (byte) ((data >> 8) & 0xff),
                (byte) ((data >> 0) & 0xff), };
    }
}

Related

1. newByteBuffer(int numBytes)
2. newByteBuffer(int numBytes)
3. newUnsafeByteBuffer(ByteBuffer buffer)
4. newUnsafeByteBuffer(int numBytes)