Example usage for java.nio ByteBuffer put

List of usage examples for java.nio ByteBuffer put

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Introduction

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

Prototype

public ByteBuffer put(byte[] src, int off, int len)

Source Link

Document

Writes bytes in the given byte array, starting from the specified offset, to the current position and increases the position by the number of bytes written.

Usage

From source file:experts.net.ip6.ULUA.java

/**
 * Create Interface ID by the Modified EUI-64 format (RFC 4291)
 *
 * @param macAddr/*from   w  ww  .  ja  v a 2 s.c  o m*/
 *            MAC (NIC) address
 */
public final void createInterfaceIDByEUI64(byte[] macAddr) {
    ByteBuffer buf = ByteBuffer.allocate(INTERFACE_ID_LENGTH);

    buf.put(macAddr, 0, 3).putShort(ADDITIONAL_VALUES).put(macAddr, 3, 3);

    buf.put(0, (byte) (buf.get(0) ^ 0x02));

    interfaceID = toList(buf);
}

From source file:com.ery.ertc.estorm.util.ByteBufferArray.java

/**
 * Transfers bytes from the given source array into this buffer array
 * //w  ww . j  av a  2 s .c  om
 * @param start
 *            start offset of this buffer array
 * @param len
 *            The maximum number of bytes to be read from the given array
 * @param srcArray
 *            The array from which bytes are to be read
 * @param srcOffset
 *            The offset within the given array of the first byte to be read
 */
public void putMultiple(long start, int len, byte[] srcArray, int srcOffset) {
    multiple(start, len, srcArray, srcOffset, new Visitor() {
        public void visit(ByteBuffer bb, byte[] array, int arrayIdx, int len) {
            bb.put(array, arrayIdx, len);
        }
    });
}

From source file:tachyon.master.RawTables.java

/**
 * Update the metadata of the specified raw table. It will check if the table exists.
 *
 * @param tableId The id of the raw table
 * @param metadata The new metadata of the raw table
 * @throws TachyonException/*ww  w .ja  v  a 2s.c  o m*/
 */
// TODO add version number.
public synchronized void updateMetadata(int tableId, ByteBuffer metadata) throws TachyonException {
    Pair<Integer, ByteBuffer> data = mData.get(tableId);

    if (null == data) {
        throw new TachyonException("The raw table " + tableId + " does not exist.");
    }

    if (metadata == null) {
        data.setSecond(ByteBuffer.allocate(0));
    } else {
        long maxVal = mTachyonConf.getBytes(Constants.MAX_TABLE_METADATA_BYTE, 0L);
        if (metadata.limit() - metadata.position() >= maxVal) {
            throw new TachyonException("Too big table metadata: " + metadata.toString());
        }
        ByteBuffer tMetadata = ByteBuffer.allocate(metadata.limit() - metadata.position());
        tMetadata.put(metadata.array(), metadata.position(), metadata.limit() - metadata.position());
        tMetadata.flip();
        data.setSecond(tMetadata);
    }
}

From source file:net.fenyo.mail4hotspot.dns.Msg.java

public String debugContent() {
    String retval = "";

    if (input_buffer.length == 0)
        return "invalid null size";

    if (input_buffer[0] == 0) {
        // UTF-8 message type
        retval += "type=text;";

        final ByteBuffer bb = ByteBuffer.allocate(input_buffer.length - 1);
        bb.put(input_buffer, 1, input_buffer.length - 1);
        bb.position(0);//from ww w .ja v  a 2s  . c  o  m
        final String query = Charset.forName("UTF-8").decode(bb).toString();
        retval += "query=" + query + ";";

    } else {
        // binary message type
        retval += "type=binary;";

        final ByteBuffer bb = ByteBuffer.allocate(input_buffer[0]);
        bb.put(input_buffer, 1, input_buffer[0]);
        bb.position(0);
        final String query = Charset.forName("UTF-8").decode(bb).toString();
        retval += "query=" + query + ";";
    }

    return retval;
}

From source file:net.fenyo.mail4hotspot.dns.Msg.java

private byte[] process(final AdvancedServices advancedServices, final Inet4Address address)
        throws GeneralException {
    // log.debug("processing message of type " + input_buffer[0]);
    // for (byte b : input_buffer) log.debug("received byte: [" + b + "]");

    if (input_buffer.length == 0)
        throw new GeneralException("invalid size");
    if (input_buffer[0] == 0) {
        // UTF-8 message type

        final ByteBuffer bb = ByteBuffer.allocate(input_buffer.length - 1);
        bb.put(input_buffer, 1, input_buffer.length - 1);
        bb.position(0);//ww w.  j a  va  2 s.c om
        final String query = Charset.forName("UTF-8").decode(bb).toString();
        // log.debug("RECEIVED query: [" + query + "]");

        final String reply = advancedServices.processQueryFromClient(query, address);

        // this buffer may not be backed by an accessible byte array, so we do not use Charset.forName("UTF-8").encode(reply).array() to fill output_buffer
        final ByteBuffer ob = Charset.forName("UTF-8").encode(reply);
        ob.get(output_buffer = new byte[ob.limit()]);

        output_size = output_buffer.length;

    } else {
        // binary message type
        // log.debug("processing binary message");

        final ByteBuffer bb = ByteBuffer.allocate(input_buffer[0]);
        bb.put(input_buffer, 1, input_buffer[0]);
        bb.position(0);
        final String query = Charset.forName("UTF-8").decode(bb).toString();
        //      log.debug("RECEIVED query: [" + query + "]");

        final BinaryMessageReply reply = advancedServices.processBinaryQueryFromClient(query,
                Arrays.copyOfRange(input_buffer, input_buffer[0] + 1, input_buffer.length), address);

        // this buffer may not be backed by an accessible byte array, so we do not use Charset.forName("UTF-8").encode(reply).array() to fill string_part
        final ByteBuffer ob = Charset.forName("UTF-8").encode(reply.reply_string);
        final byte[] string_part = new byte[ob.limit()];
        ob.get(string_part);

        if (string_part.length > 255)
            throw new GeneralException("string_part too long");
        output_buffer = new byte[string_part.length + reply.reply_data.length + 1];
        output_buffer[0] = (byte) string_part.length;
        for (int i = 0; i < string_part.length; i++)
            output_buffer[i + 1] = string_part[i];
        for (int i = 0; i < reply.reply_data.length; i++)
            output_buffer[string_part.length + i + 1] = reply.reply_data[i];
        output_size = output_buffer.length;
    }

    synchronized (compressed) {
        // http://docs.oracle.com/javase/7/docs/api/java/util/zip/Deflater.html#deflate(byte[])
        // log.debug("processing binary message: length before compressing: " + output_buffer.length);
        final Deflater compresser = new Deflater();
        compresser.setInput(output_buffer);
        compresser.finish();
        final int nbytes = compresser.deflate(compressed);
        //         log.debug("RET: " + nbytes);
        //         log.debug("COMPRESSED: " + compressed.length);
        // log.debug("processing binary message: length after compressing: " + nbytes);
        if (compressed.length == nbytes) {
            log.error("compressed buffer too small...");
            throw new GeneralException("compressed buffer too small...");
        }
        output_buffer = Arrays.copyOf(compressed, nbytes);
        output_size = output_buffer.length;
    }

    synchronized (is_processed) {
        is_processed = true;
    }

    return new byte[] { 'E', 0 }; // 'E'rror 0 == OK
}

From source file:com.linkedin.databus.core.DbusEventV1.java

private static int serializeFullEvent(long key, ByteBuffer serializationBuffer, DbusEventInfo eventInfo,
        byte[] attributes) {

    ByteBuffer valueBuffer = eventInfo.getValueByteBuffer();
    int payloadLen = (valueBuffer == null) ? eventInfo.getValueLength() : valueBuffer.remaining();

    int startPosition = serializationBuffer.position();
    serializationBuffer.put(DbusEventFactory.DBUS_EVENT_V1).putInt(HeaderCrcDefault)
            .putInt(LongKeyValueOffset + payloadLen).put(attributes).putLong(eventInfo.getSequenceId())
            .putShort(eventInfo.getpPartitionId()).putShort(eventInfo.getlPartitionId())
            .putLong(eventInfo.getTimeStampInNanos()).putShort(eventInfo.getSrcId())
            .put(eventInfo.getSchemaId(), 0, 16).putInt(HeaderCrcDefault).putLong(key);
    if (valueBuffer != null) {
        // note. put will advance position. In the case of wrapped byte[] it is ok, in the case of
        // ByteBuffer this is actually a read only copy of the buffer passed in.
        serializationBuffer.put(valueBuffer);
    }/*from  w  w w.  j  a  v  a2s.c o m*/

    int stopPosition = serializationBuffer.position();

    long valueCrc = ByteBufferCRC32.getChecksum(serializationBuffer, startPosition + LongKeyValueOffset,
            payloadLen);
    Utils.putUnsignedInt(serializationBuffer, startPosition + ValueCrcOffset, valueCrc);

    if (eventInfo.isAutocommit()) {
        //TODO (DDSDBUS-60): Medium : can avoid new here
        DbusEventV1 e = new DbusEventV1(serializationBuffer, startPosition);
        e.applyCrc();
    }

    serializationBuffer.position(stopPosition);
    return (stopPosition - startPosition);
}

From source file:com.flexive.core.stream.BinaryDownloadProtocol.java

/**
 * {@inheritDoc}/*from   w  w w  .j  a  v  a 2  s. c o m*/
 */
@Override
public boolean sendStream(ByteBuffer buffer) throws IOException {
    if (buffer.remaining() <= 0 || bin == null)
        return true; //should not happen but possible ...
    if (pre_read > 0) {
        buffer.put(_buffer, 0, pre_read); //size should not matter since its only 100 bytes
        pre_read = 0;
    }
    int max = Math.min(buffer.remaining(), _buffer.length);
    int read = bin.read(_buffer, 0, max);
    if (read == -1) {
        return false;
    }
    buffer.put(_buffer, 0, read);
    return true;
}

From source file:de.hofuniversity.iisys.neo4j.websock.query.encoding.safe.TSafeDeflateJsonQueryHandler.java

private ByteBuffer fuse(List<byte[]> buffers, final int length) {
    //fuses the buffers into a single array of the target length
    final ByteBuffer bb = ByteBuffer.allocate(length);

    for (byte[] buffer : buffers) {
        if (buffer.length > length - bb.position()) {
            bb.put(buffer, 0, length - bb.position());
        } else {//from w w w.  ja  va 2  s.  c o  m
            bb.put(buffer);
        }
    }

    //important
    bb.flip();

    return bb;
}

From source file:Main.java

private static ByteBuffer convertImageData(BufferedImage bufferedImage) {
    ByteBuffer imageBuffer;
    WritableRaster raster;//from   ww w. jav  a  2  s .  co m
    BufferedImage texImage;

    // for a texture
    if (bufferedImage.getColorModel().hasAlpha()) {
        raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, bufferedImage.getWidth(),
                bufferedImage.getHeight(), 4, null);
        texImage = new BufferedImage(glAlphaColorModel, raster, false, new Hashtable<Object, Object>());
    } else {
        raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, bufferedImage.getWidth(),
                bufferedImage.getHeight(), 3, null);
        texImage = new BufferedImage(glColorModel, raster, false, new Hashtable<Object, Object>());
    }

    // copy the source image into the produced image
    Graphics g = texImage.getGraphics();
    g.setColor(new Color(0f, 0f, 0f, 0f));
    g.fillRect(0, 0, bufferedImage.getWidth(), bufferedImage.getHeight());
    g.drawImage(bufferedImage, 0, 0, null);

    // build a byte buffer from the temporary image
    // that be used by OpenGL to produce a texture.
    byte[] data = ((DataBufferByte) bufferedImage.getRaster().getDataBuffer()).getData();

    imageBuffer = ByteBuffer.allocateDirect(data.length);
    imageBuffer.order(ByteOrder.nativeOrder());
    imageBuffer.put(data, 0, data.length);
    imageBuffer.flip();

    return imageBuffer;
}

From source file:de.hofuniversity.iisys.neo4j.websock.query.encoding.unsafe.DeflateJsonQueryHandler.java

private ByteBuffer fuse(final int length) {
    //fuses the buffers into a single array of the target length
    final ByteBuffer bb = ByteBuffer.allocate(length);

    for (byte[] buffer : fBuffers) {
        if (buffer.length > length - bb.position()) {
            bb.put(buffer, 0, length - bb.position());
        } else {//w ww  . jav  a2  s . c om
            bb.put(buffer);
        }
    }

    //important
    bb.flip();
    fBuffers.clear();

    return bb;
}