Example usage for java.nio ByteBuffer asIntBuffer

Introduction

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

Prototype

public abstract IntBuffer asIntBuffer();

Source Link

Document

Returns a int buffer which is based on the remaining content of this byte buffer.

Usage

From source file:Main.java

public static IntBuffer transportArrayToNativeBuffer(int[] iArray) {
    ByteBuffer byteBuffer = ByteBuffer.allocateDirect(iArray.length * 4);
    byteBuffer.order(ByteOrder.nativeOrder());
    return (IntBuffer) byteBuffer.asIntBuffer().put(iArray).position(0);
}

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From source file:Main.java

public static IntBuffer makeIntBuffer(int[] array)
/*     */ {/*from   w w  w. j a va 2  s .c  om*/
    /*  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;
    /*     */}

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From source file:Main.java

/**
 * Creates a {@link IntBuffer} based on the given data.
 *
 * @param data the data for the buffer//from   ww  w . j  a  va2  s.  c o  m
 * @return the int buffer
 */
public static IntBuffer createIntBuffer(final float[] data) {
    final int[] tmpData = new int[data.length];
    for (int i = 0; i < tmpData.length; i++) {
        tmpData[i] = Float.floatToRawIntBits(data[i]);
    }
    final ByteBuffer bbVertices = ByteBuffer.allocateDirect(tmpData.length * 4);
    bbVertices.order(ByteOrder.nativeOrder());
    final IntBuffer intBuffer = bbVertices.asIntBuffer();
    intBuffer.put(tmpData);
    intBuffer.flip();
    return intBuffer;
}

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From source file:Main.java

/**buffer methods*/

public static IntBuffer makeIntBuffer(int[] array) {
    final int integerSize = Integer.SIZE / 8;
    ByteBuffer byteBuffer = ByteBuffer.allocateDirect(array.length * integerSize);
    byteBuffer.order(ByteOrder.nativeOrder());
    IntBuffer intBuffer = byteBuffer.asIntBuffer();
    intBuffer.put(array);/*from  www  .j a v  a 2s  .c  o m*/
    intBuffer.position(0);
    return intBuffer;
}

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From source file:Main.java

/**android methods*/

//Only for Android
public static IntBuffer makeFloatBuffer(int[] array) {
    final int integerSize = Integer.SIZE / 8;
    ByteBuffer byteBuffer = ByteBuffer.allocateDirect(array.length * integerSize);
    byteBuffer.order(ByteOrder.nativeOrder());
    IntBuffer intBuffer = byteBuffer.asIntBuffer();
    intBuffer.put(array);/*w  ww . j av  a2s .c om*/
    intBuffer.position(0);
    return intBuffer;
}

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From source file:org.bimserver.utils.BinUtils.java

public static byte[] intToByteArray(int inInt) {
    byte[] bArray = new byte[4];
    ByteBuffer bBuffer = ByteBuffer.wrap(bArray);
    IntBuffer lBuffer = bBuffer.asIntBuffer();
    lBuffer.put(inInt);/*from  ww  w  .j  a  v  a  2 s  .  com*/
    return bArray;
}

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

/**
 * Creates a direct integer buffer with native byte order.
 *
 * @param size//from ww w. j  a  v a 2 s  . c om
 *            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();
}

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

/**
 * Converts the specified integer buffer to native endian and returns this
 * new buffer. If buffer is already in correct endian format then it is
 * returned right away.//  www  . j ava 2  s  .c  o  m
 *
 * @param buffer
 *            The integer buffer to convert
 * @return The converted integer buffer or the source buffer if no
 *         conversion is needed
 */

public static IntBuffer convertToNativeEndian(final IntBuffer buffer) {
    if (buffer.order() == ByteOrder.nativeOrder())
        return buffer;

    final ByteBuffer bytes = ByteBuffer.allocateDirect(buffer.capacity());
    bytes.order(ByteOrder.nativeOrder());
    final IntBuffer ints = bytes.asIntBuffer();
    ints.put(buffer).rewind();
    return ints;
}

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From source file:org.grouplens.lenskit.data.dao.packed.BinaryIndexTable.java

/**
 * Create a binary index table./*from   w w  w  .  j a v  a 2 s  . c  om*/
 * @param nentries The number of entries in the table.
 * @param buffer The table buffer.  Its position will be advanced to the end of the table.
 * @return The index table.
 */
public static BinaryIndexTable fromBuffer(int nentries, ByteBuffer buffer) {
    logger.debug("reading table of {} entries", nentries);
    long[] keys = new long[nentries];
    int[] offsets = new int[nentries];
    int[] sizes = new int[nentries];
    int nextExpectedOffset = 0;
    for (int i = 0; i < nentries; i++) {
        keys[i] = buffer.getLong();
        if (i > 0 && keys[i - 1] >= keys[i]) {
            logger.error("key {} is not greater than previous key {}", keys[i], keys[i - 1]);
            throw new IllegalArgumentException("corrupted index table");
        }
        offsets[i] = buffer.getInt();
        sizes[i] = buffer.getInt();
        if (offsets[i] != nextExpectedOffset) {
            logger.error("expected offset {}, got {}", nextExpectedOffset, offsets[i]);
            throw new IllegalArgumentException("corrupted index table");
        }
        nextExpectedOffset += sizes[i];
    }
    if (buffer.remaining() < nextExpectedOffset) {
        throw new IllegalArgumentException("buffer not large enough");
    }
    int end = buffer.position() + nextExpectedOffset * 4;
    ByteBuffer dup = buffer.duplicate();
    dup.limit(end);
    buffer.position(end);
    LongKeyDomain dom = LongKeyDomain.wrap(keys, keys.length, true);
    return new BinaryIndexTable(dom, offsets, sizes, dup.asIntBuffer());
}

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From source file:com.atilika.kuromoji.trie.DoubleArrayTrie.java

/**
 * Load Stored data/* w ww  .ja v a 2  s.c  om*/
 *
 * @param input  input stream to read the double array trie from
 * @return double array trie, not null
 * @throws IOException if an IO error occured during reading the double array trie
 */
public static DoubleArrayTrie read(InputStream input) throws IOException {
    DoubleArrayTrie trie = new DoubleArrayTrie();
    DataInputStream dis = new DataInputStream(new BufferedInputStream(input));

    trie.compact = dis.readBoolean();
    int baseCheckSize = dis.readInt(); // Read size of baseArr and checkArr
    int tailSize = dis.readInt(); // Read size of tailArr
    ReadableByteChannel channel = Channels.newChannel(dis);

    ByteBuffer tmpBaseBuffer = ByteBuffer.allocate(baseCheckSize * 4);
    channel.read(tmpBaseBuffer);
    tmpBaseBuffer.rewind();
    trie.baseBuffer = tmpBaseBuffer.asIntBuffer();

    ByteBuffer tmpCheckBuffer = ByteBuffer.allocate(baseCheckSize * 4);
    channel.read(tmpCheckBuffer);
    tmpCheckBuffer.rewind();
    trie.checkBuffer = tmpCheckBuffer.asIntBuffer();

    ByteBuffer tmpTailBuffer = ByteBuffer.allocate(tailSize * 2);
    channel.read(tmpTailBuffer);
    tmpTailBuffer.rewind();
    trie.tailBuffer = tmpTailBuffer.asCharBuffer();

    input.close();
    return trie;
}

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