Example usage for java.nio ByteBuffer allocateDirect

Introduction

In this page you can find the example usage for java.nio ByteBuffer allocateDirect.

Prototype

public static ByteBuffer allocateDirect(int capacity)

Source Link

Document

Creates a direct byte buffer based on a newly allocated memory block.

Usage

From source file:Main.java

public static ByteBuffer makeByteBuffer(byte[] array) {
    if (array == null)
        throw new IllegalArgumentException();

    ByteBuffer byteBuffer = ByteBuffer.allocateDirect(array.length);
    byteBuffer.order(ByteOrder.nativeOrder());
    byteBuffer.put(array);//from w w  w  .j  a va2s. c om
    byteBuffer.position(0);
    return byteBuffer;
}

From source file:Main.java

public static FloatBuffer floatArrayToNativeFloatBuffer(float[] floats) {
    FloatBuffer floatBuffer = ByteBuffer.allocateDirect(floats.length * 4).order(ByteOrder.nativeOrder())
            .asFloatBuffer();// ww  w.  j av a 2s. co m
    floatBuffer.put(floats).position(0);
    return floatBuffer;
}

From source file:Main.java

public static FloatBuffer toFloatBuffer(final float[] data) {
    final FloatBuffer buffer = ByteBuffer.allocateDirect(data.length * FLOAT_SIZE_BYTES)
            .order(ByteOrder.nativeOrder()).asFloatBuffer();
    buffer.put(data).position(0);//www  .j a va 2  s.  c  o m
    return buffer;
}

From source file:Main.java

public static IntBuffer makeIntBuffer(int[] array)
/*     */ {//from www . ja  va2 s  .  co  m
    /*  52 */int integerSize = 4;
    /*  53 */ByteBuffer byteBuffer = ByteBuffer.allocateDirect(array.length * 4);
    /*  54 */byteBuffer.order(ByteOrder.nativeOrder());
    /*  55 */IntBuffer intBuffer = byteBuffer.asIntBuffer();
    /*  56 */intBuffer.put(array);
    /*  57 */intBuffer.position(0);
    /*  58 */return intBuffer;
    /*     */}

From source file:Main.java

public static FloatBuffer makeFloatBuffer3(float $a, float $b, float $c) {
    ByteBuffer b = ByteBuffer.allocateDirect(3 * BYTES_PER_FLOAT);
    b.order(ByteOrder.nativeOrder());
    FloatBuffer buffer = b.asFloatBuffer();
    buffer.put($a);/* w w  w . j  a  v a2 s .  c  om*/
    buffer.put($b);
    buffer.put($c);
    buffer.position(0);
    return buffer;
}

From source file:Main.java

/**
 * // w w w .jav a2  s . co m
 * @param arr
 * @return
 */
public static final ByteBuffer createByteBuffer(byte[] arr) {
    int len = sizeofB(arr.length);
    ByteBuffer bb = ByteBuffer.allocateDirect(len);
    bb.order(ByteOrder.nativeOrder());
    ByteBuffer fb = bb;
    fb.put(arr);
    fb.position(0);
    return fb;
}

From source file:Main.java

public static FloatBuffer makeFloatBuffer4(float $a, float $b, float $c, float $d) {
    ByteBuffer b = ByteBuffer.allocateDirect(4 * BYTES_PER_FLOAT);
    b.order(ByteOrder.nativeOrder());
    FloatBuffer buffer = b.asFloatBuffer();
    buffer.put($a);//  w  w w  . ja v a 2s.  co m
    buffer.put($b);
    buffer.put($c);
    buffer.put($d);
    buffer.position(0);
    return buffer;
}

From source file:Main.java

public static FloatBuffer transportArrayToNativeBuffer(float[] fArray) {
    ByteBuffer byteBuffer = ByteBuffer.allocateDirect(fArray.length * 4);
    byteBuffer.order(ByteOrder.nativeOrder());
    return (FloatBuffer) byteBuffer.asFloatBuffer().put(fArray).position(0);
}

From source file:Main.java

/**
 * /*from  w  w w  .j av  a 2 s  . c  o  m*/
 * @since 1.0.0
 * @param v
 * @return the FloatBuffer
 */
public static FloatBuffer toFloatBuffer(float[] v) {
    ByteBuffer buf = ByteBuffer.allocateDirect(v.length * 4);
    buf.order(ByteOrder.nativeOrder());
    FloatBuffer buffer = buf.asFloatBuffer();
    buffer.put(v);
    buffer.position(0);
    return buffer;
}

From source file:Main.java

/**
 * //w w w.  ja v  a2  s .c o  m
 * @since 1.0.0
 * @param v
 * @return the ShortBuffer
 */
public static ShortBuffer toShortBuffer(short[] v) {
    ByteBuffer buf = ByteBuffer.allocateDirect(v.length * 2);
    buf.order(ByteOrder.nativeOrder());
    ShortBuffer buffer = buf.asShortBuffer();
    buffer.put(v);
    buffer.position(0);
    return buffer;
}