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 ShortBuffer allocateShortBuffer(int capacity) {
    ByteBuffer vbb = ByteBuffer.allocateDirect(capacity);
    vbb.order(ByteOrder.nativeOrder());
    return vbb.asShortBuffer();
}

From source file:Main.java

public static ShortBuffer toShortBuffer(short[] values) {
    ByteBuffer vbb = ByteBuffer.allocateDirect(values.length * 2);
    vbb.order(ByteOrder.nativeOrder());
    ShortBuffer buffer = vbb.asShortBuffer();
    buffer.put(values);/*from  ww  w .  j a va 2  s. c  om*/
    buffer.position(0);
    return buffer;
}

From source file:Main.java

public static FloatBuffer toFloatBufferPositionZero(float[] values) {
    final ByteBuffer vbb = ByteBuffer.allocateDirect(values.length * 4);
    vbb.order(ByteOrder.nativeOrder());
    final FloatBuffer buffer = vbb.asFloatBuffer();
    buffer.put(values);/*w  ww  . j  av  a2 s.  c o m*/
    buffer.position(0);
    return buffer;
}

From source file:Main.java

public static FloatBuffer toFloatBufferPositionZero(float[] values) {
    ByteBuffer vbb = ByteBuffer.allocateDirect(values.length * 4);
    vbb.order(ByteOrder.nativeOrder());
    FloatBuffer buffer = vbb.asFloatBuffer();
    buffer.put(values);/*from   w  w w  . j a v  a2s. c o m*/
    buffer.position(0);
    return buffer;
}

From source file:Main.java

public static Buffer fillBuffer(double[] array) {
    // Convert to floats because OpenGL doesnt work on doubles, and manually
    // casting each input value would take too much time.
    ByteBuffer bb = ByteBuffer.allocateDirect(4 * array.length); // each
    // float/*  w w w.  j a v  a 2s.c o m*/
    // takes 4
    // bytes
    bb.order(ByteOrder.LITTLE_ENDIAN);
    for (double d : array)
        bb.putFloat((float) d);
    bb.rewind();

    return bb;

}

From source file:Main.java

public static ShortBuffer transportArrayToNativeBuffer(short[] sArray) {
    ByteBuffer byteBuffer = ByteBuffer.allocateDirect(sArray.length * 2);
    byteBuffer.order(ByteOrder.nativeOrder());
    return (ShortBuffer) byteBuffer.asShortBuffer().put(sArray).position(0);
}

From source file:Main.java

public static ByteBuffer makeByteBuffer(byte[] array) {
    final int SIZE = Byte.SIZE / 8;
    ByteBuffer byteBuffer = ByteBuffer.allocateDirect(array.length * SIZE);
    byteBuffer.order(ByteOrder.nativeOrder());
    byteBuffer.put(array);//w w w . j  a  v a2s  .co  m
    byteBuffer.position(0);
    return byteBuffer;
}

From source file:Main.java

public static ByteBuffer newByteBuffer(int numBytes) {
    ByteBuffer buffer = ByteBuffer.allocateDirect(numBytes);
    buffer.order(ByteOrder.nativeOrder());
    return buffer;
}

From source file:Main.java

public static ShortBuffer createShortBuffer(final int size) {
    final ShortBuffer buf = ByteBuffer.allocateDirect(2 * size).order(ByteOrder.nativeOrder()).asShortBuffer();
    buf.clear();/*ww w  . ja  v  a 2 s .c  o m*/
    return buf;
}

From source file:Main.java

public static FloatBuffer makeFloatBuffer(int length) {
    final int floatSize = Float.SIZE / 8;
    ByteBuffer byteBuffer = ByteBuffer.allocateDirect(length * floatSize);
    byteBuffer.order(ByteOrder.nativeOrder());
    FloatBuffer floatBuffer = byteBuffer.asFloatBuffer();
    floatBuffer.position(0);//from  w  w  w .j  av a2s .  c om
    return floatBuffer;
}