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:de.ailis.threedee.utils.BufferUtils.java

/**
 * Creates a direct short buffer with native byte order.
 *
 * @param size/*from   ww w.j  av a  2 s.  c o m*/
 *            The data
 * @return The created direct short buffer
 */

public static ShortBuffer createDirectShortBuffer(final int size) {
    final ByteBuffer tmp = ByteBuffer.allocateDirect(size * SHORT_BYTES);
    tmp.order(ByteOrder.nativeOrder());
    return tmp.asShortBuffer();
}

From source file:org.quickserver.util.pool.ByteBufferObjectFactory.java

public Object makeObject() {
    if (useDirectByteBuffer)
        return ByteBuffer.allocateDirect(bufferSize);
    else/*w  ww  .  j  a va 2  s  .c om*/
        return ByteBuffer.allocate(bufferSize);
}

From source file:org.italiangrid.storm.webdav.fs.attrs.DefaultExtendedFileAttributesHelper.java

protected String getAttributeValue(UserDefinedFileAttributeView view, String attributeName) throws IOException {

    if (view.list().contains(attributeName)) {
        ByteBuffer buffer = ByteBuffer.allocateDirect(view.size(attributeName));
        view.read(attributeName, buffer);
        buffer.flip();// ww  w. ja  v  a  2  s . com
        return StandardCharsets.UTF_8.decode(buffer).toString();
    } else {
        return "";
    }
}

From source file:de.ailis.threedee.utils.BufferUtils.java

/**
 * Creates a direct integer buffer with native byte order.
 *
 * @param size//from   w  w w  .  ja v  a  2s.  c  o  m
 *            The data
 * @return The created direct integer buffer
 */

public static IntBuffer createDirectIntegerBuffer(final int size) {
    final ByteBuffer tmp = ByteBuffer.allocateDirect(size * INTEGER_BYTES);
    tmp.order(ByteOrder.nativeOrder());
    return tmp.asIntBuffer();
}

From source file:io.uploader.drive.util.FileUtils.java

public static String readAllAndgetMD5(InputStream in) throws IOException {
    com.google.common.hash.HashingInputStream his = null;
    try {//  w ww  . j  a  v  a  2  s . co m
        his = new com.google.common.hash.HashingInputStream(Hashing.md5(), in);

        final int bufferSize = 2097152;
        final ReadableByteChannel inputChannel = Channels.newChannel(his);
        final ByteBuffer buffer = ByteBuffer.allocateDirect(bufferSize);
        while (inputChannel.read(buffer) != -1) {
            buffer.clear();
        }
        /*
        byte[] bytesBuffer = new byte[bufferSize] ;
        int r = his.read(bytesBuffer, 0, bufferSize) ;
        while (r != -1)
           r = his.read(bytesBuffer) ;
        */
        HashCode hc = his.hash();
        return (hc != null) ? (hc.toString()) : (null);
    } finally {
        if (his != null)
            his.close();
    }
}

From source file:Triangle.java

public Triangle() {
    int vertexShader = loadShader(GLES20.GL_VERTEX_SHADER, vertexShaderCode);
    int fragmentShader = loadShader(GLES20.GL_FRAGMENT_SHADER, fragmentShaderCode);
    mProgram = GLES20.glCreateProgram();
    GLES20.glAttachShader(mProgram, vertexShader);
    GLES20.glAttachShader(mProgram, fragmentShader);
    GLES20.glLinkProgram(mProgram);//from   w  w w .  j ava  2s  . c o m

    ByteBuffer bb = ByteBuffer.allocateDirect(triangleCoords.length * 4);
    bb.order(ByteOrder.nativeOrder());

    vertexBuffer = bb.asFloatBuffer();
    vertexBuffer.put(triangleCoords);
    vertexBuffer.position(0);
}

From source file:org.apache.hadoop.util.NativeJerasure.java

public static void decodeBulk(byte[][] readBufs, byte[][] writeBufs, int[] erasedLocation, int dataStart,
        int dataLen, int stripeSize, int paritySize) {
    ByteBuffer[] inputBuffers = new ByteBuffer[readBufs.length];
    ByteBuffer[] outputBuffers = new ByteBuffer[writeBufs.length];
    for (int i = 0; i < writeBufs.length; i++) {
        outputBuffers[i] = ByteBuffer.allocateDirect(dataLen);
    }/*from w  ww  .  j  a  v  a2  s.com*/
    for (int i = 0; i < readBufs.length; i++) {
        inputBuffers[i] = directify(readBufs[i], dataStart, dataLen);
    }
    nativeDecodeBulk(inputBuffers, outputBuffers, erasedLocation, dataLen, stripeSize, paritySize,
            erasedLocation.length);
    for (int i = 0; i < writeBufs.length; i++) {
        outputBuffers[i].get(writeBufs[i], dataStart, dataLen);
    }
}

From source file:me.schiz.jmeter.ring.udp.EventLoopRunnable.java

public EventLoopRunnable(Ring ring) {
    this.ring = ring;
    byteBuffer = ByteBuffer.allocateDirect(ring.getBufferSize());
    registerQueue = new ArrayBlockingQueue<KeyValue>(REGS_PER_ITERATION * 4);

    try {/*from  ww w.  j a  v a  2 s  .co  m*/
        this.selector = Selector.open();
    } catch (IOException e) {
        log.error("Can't open selector", e);
    }
}

From source file:net.kungfoo.grizzly.proxy.impl.ProxyProcessingInfo.java

public ProxyProcessingInfo() {
    super();//ww  w  .j ava2s  . c  o  m
    this.originState = IDLE;
    this.clientState = IDLE;
    this.inBuffer = ByteBuffer.allocateDirect(1024 * 8);
    this.outBuffer = ByteBuffer.allocateDirect(1024 * 8);
}

From source file:com.mgmtp.perfload.perfalyzer.util.IoUtilities.java

/**
 * Copies the content from one channel to another.
 *
 * @param srcChannel//ww  w .ja v a  2s  . c  o  m
 *       the source channel to copy from
 * @param destChannel
 *       the destination channel to copy to
 */
public static void copy(final ReadableByteChannel srcChannel, final WritableByteChannel destChannel)
        throws IOException {
    final ByteBuffer buffer = ByteBuffer.allocateDirect(BUFFER_SIZE);
    while (srcChannel.read(buffer) != -1) {
        // flip the buffer so it can be written to the destination channel
        buffer.flip();

        // write to the destination channel
        destChannel.write(buffer);

        // If partial transfer, shift remainder down so it does not get lost
        // If buffer is empty, this is the same as calling clear()
        buffer.compact();
    }

    // EOF will leave buffer in fill state
    buffer.flip();

    // make sure the buffer is fully drained
    while (buffer.hasRemaining()) {
        destChannel.write(buffer);
    }
}