Example usage for java.nio ByteBuffer flip

List of usage examples for java.nio ByteBuffer flip

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Introduction

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

Prototype

public final Buffer flip()

Source Link

Document

Flips this buffer.

Usage

From source file:cn.ac.ncic.mastiff.io.coding.DictionaryBitPackingRLEByteReader.java

public byte[] CompressensureDecompressed() throws IOException {
    FlexibleEncoding.ORC.DynamicByteArray dynamicBuffer = new FlexibleEncoding.ORC.DynamicByteArray();
    dynamicBuffer.add(inBuf.getData(), 0, inBuf.getLength());
    ByteBuffer byteBuf = ByteBuffer.allocate(dynamicBuffer.size());
    dynamicBuffer.setByteBuffer(byteBuf, 0, dynamicBuffer.size());
    byteBuf.flip();
    DataInputBuffer dib = new DataInputBuffer();
    dib.reset(byteBuf.array(), 0, byteBuf.array().length);
    int dictionarySize = dib.readInt();
    int OnlydictionarySize = dib.readInt();
    dib.reset(byteBuf.array(), 8, dictionarySize - 4);
    byte[] dictionaryBuffer = dib.getData();
    dib.reset(byteBuf.array(), 4 + dictionarySize, (byteBuf.array().length - dictionarySize - 4));
    byte[] dictionaryId = dib.getData();
    dib.close();//w ww  .  j  av  a  2s. c om
    DictionaryValuesReader cr = initDicReader(OnlydictionarySize, dictionaryBuffer,
            PrimitiveType.PrimitiveTypeName.BINARY);
    cr.initFromPage(numPairs, dictionaryId, 0);
    DataOutputBuffer decoding = new DataOutputBuffer();
    decoding.writeInt(decompressedSize);
    decoding.writeInt(numPairs);
    decoding.writeInt(startPos);
    for (int i = 0; i < numPairs; i++) {
        byte tmp = Byte.parseByte(cr.readBytes().toStringUsingUTF8());
        decoding.writeInt(tmp);
    }
    byteBuf.clear();
    inBuf.close();
    return decoding.getData();
}

From source file:org.apache.axis2.transport.nhttp.ServerHandler.java

/**
 * Process ready input by writing it into the Pipe
 * @param conn the connection being processed
 * @param decoder the content decoder in use
 *//*from  ww w  .j  a  v a2s.  c o  m*/
public void inputReady(final NHttpServerConnection conn, final ContentDecoder decoder) {

    HttpContext context = conn.getContext();
    Pipe.SinkChannel sink = (Pipe.SinkChannel) context.getAttribute(REQUEST_SINK_CHANNEL);
    ByteBuffer inbuf = (ByteBuffer) context.getAttribute(REQUEST_BUFFER);

    try {
        while (decoder.read(inbuf) > 0) {
            inbuf.flip();
            sink.write(inbuf);
            inbuf.compact();
        }

        if (decoder.isCompleted()) {
            sink.close();
        }

    } catch (IOException e) {
        handleException("I/O Error : " + e.getMessage(), e, conn);
    }
}

From source file:cn.ac.ncic.mastiff.io.coding.DictionaryBitPackingRLEIntReader.java

@Override
public byte[] ensureDecompressed() throws IOException {
    FlexibleEncoding.ORC.DynamicByteArray dynamicBuffer = new FlexibleEncoding.ORC.DynamicByteArray();
    dynamicBuffer.add(inBuf.getData(), 12, inBuf.getLength() - 12);
    ByteBuffer byteBuf = ByteBuffer.allocate(dynamicBuffer.size());
    dynamicBuffer.setByteBuffer(byteBuf, 0, dynamicBuffer.size());
    byteBuf.flip();
    DataInputBuffer dib = new DataInputBuffer();
    dib.reset(byteBuf.array(), 0, byteBuf.array().length);
    int dictionarySize = dib.readInt();
    int OnlydictionarySize = dib.readInt();
    dib.reset(byteBuf.array(), 8, dictionarySize - 4);
    byte[] dictionaryBuffer = dib.getData();
    dib.reset(byteBuf.array(), 4 + dictionarySize, (byteBuf.array().length - dictionarySize - 4));
    byte[] dictionaryId = dib.getData();
    dib.close();//from   w  w w .j av  a  2 s.c o  m
    DictionaryValuesReader cr = initDicReader(OnlydictionarySize, dictionaryBuffer,
            PrimitiveType.PrimitiveTypeName.INT32);
    cr.initFromPage(numPairs, dictionaryId, 0);
    DataOutputBuffer decoding = new DataOutputBuffer();
    decoding.writeInt(decompressedSize);
    decoding.writeInt(numPairs);
    decoding.writeInt(startPos);
    for (int i = 0; i < numPairs; i++) {
        int tmp = cr.readInteger();
        decoding.writeInt(tmp);
    }
    byteBuf.clear();
    inBuf.close();
    return decoding.getData();
}

From source file:com.facebook.infrastructure.net.UdpConnection.java

public void read(SelectionKey key) {
    key.interestOps(key.interestOps() & (~SelectionKey.OP_READ));
    ByteBuffer buffer = ByteBuffer.allocate(BUFFER_SIZE);
    try {/* w ww . j a  v  a  2 s .  co  m*/
        SocketAddress sa = socketChannel_.receive(buffer);
        if (sa == null) {
            logger_.debug("*** No datagram packet was available to be read ***");
            return;
        }
        buffer.flip();

        byte[] bytes = gobbleHeaderAndExtractBody(buffer);
        if (bytes.length > 0) {
            DataInputStream dis = new DataInputStream(new ByteArrayInputStream(bytes));
            Message message = Message.serializer().deserialize(dis);
            if (message != null) {
                MessagingService.receive(message);
            }
        }
    } catch (IOException ioe) {
        logger_.warn(LogUtil.throwableToString(ioe));
    } finally {
        key.interestOps(key_.interestOps() | SelectionKey.OP_READ);
    }
}

From source file:Main.java

private static ByteBuffer convertImageData(BufferedImage bufferedImage) {
    ByteBuffer imageBuffer;
    WritableRaster raster;//from w  ww . j av  a 2  s  . c  o 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:cn.ac.ncic.mastiff.io.coding.DictionaryBitPackingRLEByteReader.java

@Override
public byte[] ensureDecompressed() throws IOException {
    FlexibleEncoding.ORC.DynamicByteArray dynamicBuffer = new FlexibleEncoding.ORC.DynamicByteArray();
    dynamicBuffer.add(inBuf.getData(), 12, inBuf.getLength() - 12);
    ByteBuffer byteBuf = ByteBuffer.allocate(dynamicBuffer.size());
    dynamicBuffer.setByteBuffer(byteBuf, 0, dynamicBuffer.size());
    byteBuf.flip();
    DataInputBuffer dib = new DataInputBuffer();
    dib.reset(byteBuf.array(), 0, byteBuf.array().length);
    int dictionarySize = dib.readInt();
    int OnlydictionarySize = dib.readInt();
    dib.reset(byteBuf.array(), 8, dictionarySize - 4);
    byte[] dictionaryBuffer = dib.getData();
    dib.reset(byteBuf.array(), 4 + dictionarySize, (byteBuf.array().length - dictionarySize - 4));
    byte[] dictionaryId = dib.getData();
    dib.close();//ww  w .java2  s  . co  m
    DictionaryValuesReader cr = initDicReader(OnlydictionarySize, dictionaryBuffer,
            PrimitiveType.PrimitiveTypeName.BINARY);
    cr.initFromPage(numPairs, dictionaryId, 0);
    DataOutputBuffer decoding = new DataOutputBuffer();
    decoding.writeInt(decompressedSize);
    decoding.writeInt(numPairs);
    decoding.writeInt(startPos);
    for (int i = 0; i < numPairs; i++) {
        byte tmp = Byte.parseByte(cr.readBytes().toStringUsingUTF8());
        decoding.writeInt(tmp);
    }
    byteBuf.clear();
    inBuf.close();
    return decoding.getData();

}

From source file:cn.ac.ncic.mastiff.io.coding.DictionaryBitPackingRLEIntReader.java

public byte[] CompressensureDecompressed() throws IOException {
    FlexibleEncoding.ORC.DynamicByteArray dynamicBuffer = new FlexibleEncoding.ORC.DynamicByteArray();
    dynamicBuffer.add(inBuf.getData(), 0, inBuf.getLength());
    ByteBuffer byteBuf = ByteBuffer.allocate(dynamicBuffer.size());
    dynamicBuffer.setByteBuffer(byteBuf, 0, dynamicBuffer.size());
    byteBuf.flip();
    DataInputBuffer dib = new DataInputBuffer();
    dib.reset(byteBuf.array(), 0, byteBuf.array().length);
    int dictionarySize = dib.readInt();
    int OnlydictionarySize = dib.readInt();
    dib.reset(byteBuf.array(), 8, dictionarySize - 4);
    byte[] dictionaryBuffer = dib.getData();
    dib.reset(byteBuf.array(), 4 + dictionarySize, (byteBuf.array().length - dictionarySize - 4));
    byte[] dictionaryId = dib.getData();
    dib.close();/*from www. j  a  va  2  s.co m*/
    DictionaryValuesReader cr = initDicReader(OnlydictionarySize, dictionaryBuffer,
            PrimitiveType.PrimitiveTypeName.INT32);
    cr.initFromPage(numPairs, dictionaryId, 0);
    DataOutputBuffer decoding = new DataOutputBuffer();
    decoding.writeInt(decompressedSize);
    decoding.writeInt(numPairs);
    decoding.writeInt(startPos);
    for (int i = 0; i < numPairs; i++) {
        int tmp = cr.readInteger();
        decoding.writeInt(tmp);
    }
    byteBuf.clear();

    inBuf.close();
    return decoding.getData();

}

From source file:net.ymate.platform.serv.nio.support.NioSession.java

public void read() throws IOException {
    if (__buffer == null) {
        __buffer = ByteBufferBuilder.allocate(__eventGroup.bufferSize());
    }/*from w w  w .ja va 2  s . c  o m*/
    ByteBuffer _data = ByteBuffer.allocate(__eventGroup.bufferSize());
    int _len = 0;
    while ((_len = __doChannelRead(_data)) > 0) {
        _data.flip();
        __buffer.append(_data.array(), _data.position(), _data.remaining());
        _data.clear();
    }
    if (_len < 0) {
        close();
        return;
    }
    ByteBufferBuilder _copiedBuffer = __buffer.duplicate().flip();
    while (true) {
        _copiedBuffer.mark();
        Object _message = null;
        if (_copiedBuffer.remaining() > 0) {
            _message = __eventGroup.codec().decode(_copiedBuffer);
        } else {
            _message = null;
        }
        if (_message == null) {
            _copiedBuffer.reset();
            __doBufferReset(_copiedBuffer);
            break;
        } else {
            final Object _copiedObj = _message;
            __eventGroup.executorService().submit(new Runnable() {
                public void run() {
                    try {
                        __eventGroup.listener().onMessageReceived(_copiedObj, NioSession.this);
                    } catch (IOException e) {
                        try {
                            __eventGroup.listener().onExceptionCaught(e, NioSession.this);
                        } catch (IOException ex) {
                            try {
                                close();
                            } catch (Throwable exx) {
                                _LOG.error(exx.getMessage(), RuntimeUtils.unwrapThrow(exx));
                            }
                        }
                    }
                }
            });
        }
    }
}

From source file:org.apache.nifi.io.nio.AbstractChannelReader.java

@Override
public final void run() {
    if (!key.isValid() || consumer.isConsumerFinished()) {
        closeStream();//  w  w w.  j  a  va  2 s . c  o  m
        return;
    }
    if (!key.isReadable()) {
        return;//there is nothing available to read...or we aren't allow to read due to throttling
    }
    ByteBuffer buffer = null;
    try {
        buffer = bufferPool.poll();
        if (buffer == null) {
            return; // no buffers available - come back later
        }
        final int bytesRead = fillBuffer(key, buffer);
        buffer.flip();
        if (buffer.remaining() > 0) {
            consumer.addFilledBuffer(buffer);
            buffer = null; //clear the reference - is now the consumer's responsibility
        } else {
            buffer.clear();
            bufferPool.returnBuffer(buffer, 0);
            buffer = null; //clear the reference - is now back to the queue
        }
        if (bytesRead < 0) { //we've reached the end
            closeStream();
        }
    } catch (final Exception ioe) {
        closeStream();
        LOGGER.error("Closed channel reader " + this + " due to " + ioe);
    } finally {
        if (buffer != null) {
            buffer.clear();
            bufferPool.returnBuffer(buffer, 0);
        }
    }
}

From source file:org.lispmob.noroot.IPC.java

public void run() {
    int len = 0;/*  www  .ja  va2  s  .c  om*/
    ByteBuffer buf = ByteBuffer.allocate(9000);
    while (!ipc_thread.isInterrupted()) {
        buf.clear();
        try {
            len = ipc_channel.read(buf);
            if (len == 0) {
                continue;
            }
            buf.flip();
            String json_str = EncodingUtils.getString(buf.array(), "utf8");
            JSONObject jObj = new JSONObject(json_str);
            int ipc_type = jObj.getInt("type");
            System.out.println("LISPmob: Received IPC message: " + ipc_type);
            switch (ipc_type) {
            case IPC_LOG_MSG:
                LISPmobVPNService.err_msg_code = jObj.getInt("err_msg_code");
                Thread.sleep(1000);
                if (LISPmobVPNService.err_msg_code != 0) {
                    /* If LISPmob is not the active windows, the error msg code is not clean
                     * and we send a notification of the error */
                    Resources res = vpn_service.getResources();
                    String[] err_msg = res.getStringArray(R.array.ErrMsgArray);
                    String msg = err_msg[LISPmobVPNService.err_msg_code];
                    //notifications.notify_msg( msg);
                }
                break;
            case IPC_PROTECT_SOCKS:
                int socket = jObj.getInt("socket");
                if (socket != -1) {
                    boolean sock_protect = false;
                    int retry = 0;
                    while (!sock_protect && retry < 30) {
                        if (!vpn_service.protect(socket)) {
                            retry++;
                            Thread.sleep(200);
                        } else {
                            sock_protect = true;
                            System.out.println(
                                    "LISPmob: The socket " + socket + " has been protected (VPN Service)");
                        }
                    }
                }
                break;
            default:
                System.out.println("***** Unknown IPC message: " + ipc_type);
                break;
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}