Example usage for java.nio ByteBuffer order

Introduction

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

Prototype

Endianness order

To view the source code for java.nio ByteBuffer order.

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Document

The byte order of this buffer, default is BIG_ENDIAN .

Usage

From source file:ffx.realspace.CCP4MapFilter.java

/**
 * {@inheritDoc}/*from  w  w  w.ja  v a  2 s  .c om*/
 */
@Override
public Crystal getCrystal(String fileName, CompositeConfiguration properties) {
    int imapData;
    int spaceGroup = -1;
    double cellA = -1.0;
    double cellB = -1.0;
    double cellC = -1.0;
    double cellAlpha = -1.0;
    double cellBeta = -1.0;
    double cellGamma = -1.0;

    ByteOrder byteOrder = ByteOrder.nativeOrder();
    FileInputStream fileInputStream;
    DataInputStream dataInputStream;

    // first determine byte order of file versus system
    try {
        fileInputStream = new FileInputStream(fileName);
        dataInputStream = new DataInputStream(fileInputStream);

        dataInputStream.skipBytes(212);
        byte bytes[] = new byte[4];
        dataInputStream.read(bytes, 0, 4);
        ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);

        imapData = byteBuffer.order(ByteOrder.BIG_ENDIAN).getInt();
        String stampString = Integer.toHexString(imapData);

        switch (stampString.charAt(0)) {
        case '1':
        case '3':
            if (byteOrder.equals(ByteOrder.LITTLE_ENDIAN)) {
                byteOrder = ByteOrder.BIG_ENDIAN;
            }
            break;
        case '4':
            if (byteOrder.equals(ByteOrder.BIG_ENDIAN)) {
                byteOrder = ByteOrder.LITTLE_ENDIAN;
            }
            break;
        }
        fileInputStream.close();
    } catch (Exception e) {
        String message = " Fatal exception reading CCP4 map.\n";
        logger.log(Level.SEVERE, message, e);
    }

    try {
        fileInputStream = new FileInputStream(fileName);
        dataInputStream = new DataInputStream(fileInputStream);

        dataInputStream.skipBytes(40);
        byte bytes[] = new byte[80];
        dataInputStream.read(bytes, 0, 80);
        ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);

        cellA = byteBuffer.order(byteOrder).getFloat();
        cellB = byteBuffer.order(byteOrder).getFloat();
        cellC = byteBuffer.order(byteOrder).getFloat();
        cellAlpha = byteBuffer.order(byteOrder).getFloat();
        cellBeta = byteBuffer.order(byteOrder).getFloat();
        cellGamma = byteBuffer.order(byteOrder).getFloat();

        for (int i = 0; i < 3; i++) {
            byteBuffer.order(byteOrder).getInt();
        }
        for (int i = 0; i < 3; i++) {
            byteBuffer.order(byteOrder).getFloat();
        }

        spaceGroup = byteBuffer.order(byteOrder).getInt();
        fileInputStream.close();
    } catch (Exception e) {
        String message = " Fatal exception reading CCP4 map.\n";
        logger.log(Level.SEVERE, message, e);
    }

    return new Crystal(cellA, cellB, cellC, cellAlpha, cellBeta, cellGamma,
            SpaceGroup.spaceGroupNames[spaceGroup - 1]);
}

---

From source file:com.kentdisplays.synccardboarddemo.MainActivity.java

/**
 * Creates the buffers we use to store information about the 3D world. OpenGL doesn't use Java
 * arrays, but rather needs data in a format it can understand. Hence we use ByteBuffers.
 * @param config The EGL configuration used when creating the surface.
 *///from  w ww .  j  ava  2  s. c o m
@Override
public void onSurfaceCreated(EGLConfig config) {
    Log.i(TAG, "onSurfaceCreated");

    // make a floor
    ByteBuffer bbFloorVertices = ByteBuffer.allocateDirect(DATA.FLOOR_COORDS.length * 4);
    bbFloorVertices.order(ByteOrder.nativeOrder());
    mFloorVertices = bbFloorVertices.asFloatBuffer();
    mFloorVertices.put(DATA.FLOOR_COORDS);
    mFloorVertices.position(0);

    ByteBuffer bbFloorNormals = ByteBuffer.allocateDirect(DATA.FLOOR_NORMALS.length * 4);
    bbFloorNormals.order(ByteOrder.nativeOrder());
    mFloorNormals = bbFloorNormals.asFloatBuffer();
    mFloorNormals.put(DATA.FLOOR_NORMALS);
    mFloorNormals.position(0);

    ByteBuffer bbFloorColors = ByteBuffer.allocateDirect(DATA.FLOOR_COLORS.length * 4);
    bbFloorColors.order(ByteOrder.nativeOrder());
    mFloorColors = bbFloorColors.asFloatBuffer();
    mFloorColors.put(DATA.FLOOR_COLORS);
    mFloorColors.position(0);

    int vertexShader = loadGLShader(GLES20.GL_VERTEX_SHADER, R.raw.light_vertex);
    int gridShader = loadGLShader(GLES20.GL_FRAGMENT_SHADER, R.raw.grid_fragment);

    mGlProgram = GLES20.glCreateProgram();
    GLES20.glAttachShader(mGlProgram, vertexShader);
    GLES20.glAttachShader(mGlProgram, gridShader);
    GLES20.glLinkProgram(mGlProgram);

    GLES20.glEnable(GLES20.GL_DEPTH_TEST);

    Matrix.setIdentityM(mModelFloor, 0);
    Matrix.translateM(mModelFloor, 0, 0, -mFloorDepth, 0); // Floor appears below user

    // Create the placeholder pages.
    mPages = new Page[4];
    mPages[0] = new Page(getResources().openRawResource(R.raw.boogie_board), mGlProgram, 0);
    mPages[1] = new Page(getResources().openRawResource(R.raw.house), mGlProgram, 1);
    mPages[2] = new Page(getResources().openRawResource(R.raw.placeholder), mGlProgram, 2);
    mPages[3] = new Page(getResources().openRawResource(R.raw.cylinder), mGlProgram, 3);

    checkGLError("onSurfaceCreated");
}

---

From source file:au.org.ala.delta.io.BinFile.java

public void writeInt(int value) {
    ByteBuffer b = ByteBuffer.allocate(4);
    b.order(ByteOrder.LITTLE_ENDIAN);
    b.putInt(value);/*from   w  ww. j  a va2 s .c om*/
    writeBytes(b);
}

---

From source file:au.org.ala.delta.io.BinFile.java

public void writeLong(long value) {
    ByteBuffer b = ByteBuffer.allocate(8);
    b.order(ByteOrder.LITTLE_ENDIAN);
    b.putLong(value);/* w w  w .j a  v a2 s  .  c  o  m*/
    writeBytes(b);
}

---

From source file:au.org.ala.delta.io.BinFile.java

public void writeShort(short value) {
    ByteBuffer buffer = ByteBuffer.allocate(2);
    buffer.order(ByteOrder.LITTLE_ENDIAN);
    buffer.putShort(value);//www.  j  a  va  2  s. c  o  m
    writeBytes(buffer);
}

---

From source file:ffx.xray.CCP4MapFilter.java

/**
 * {@inheritDoc}/*from   w  ww . j a va2 s  . c om*/
 */
@Override
public Crystal getCrystal(String filename, CompositeConfiguration properties) {
    int imapdata;
    int sg = -1;
    double cella = -1.0;
    double cellb = -1.0;
    double cellc = -1.0;
    double cellalpha = -1.0;
    double cellbeta = -1.0;
    double cellgamma = -1.0;

    ByteOrder b = ByteOrder.nativeOrder();

    FileInputStream fis;
    DataInputStream dis;

    // first determine byte order of file versus system
    try {
        fis = new FileInputStream(filename);
        dis = new DataInputStream(fis);

        dis.skipBytes(212);
        byte bytes[] = new byte[4];
        dis.read(bytes, 0, 4);
        ByteBuffer bb = ByteBuffer.wrap(bytes);

        imapdata = bb.order(ByteOrder.BIG_ENDIAN).getInt();
        String stampstr = Integer.toHexString(imapdata);
        // System.out.println("stamp: " + stampstr);
        switch (stampstr.charAt(0)) {
        case '1':
        case '3':
            if (b.equals(ByteOrder.LITTLE_ENDIAN)) {
                b = ByteOrder.BIG_ENDIAN;
            }
            break;
        case '4':
            if (b.equals(ByteOrder.BIG_ENDIAN)) {
                b = ByteOrder.LITTLE_ENDIAN;
            }
            break;
        }
        fis.close();
    } catch (Exception e) {
        String message = "Fatal exception reading CCP4 map.\n";
        logger.log(Level.SEVERE, message, e);
        System.exit(-1);
    }

    try {
        fis = new FileInputStream(filename);
        dis = new DataInputStream(fis);

        dis.skipBytes(40);
        byte bytes[] = new byte[80];
        dis.read(bytes, 0, 80);
        ByteBuffer bb = ByteBuffer.wrap(bytes);

        cella = bb.order(b).getFloat();
        cellb = bb.order(b).getFloat();
        cellc = bb.order(b).getFloat();
        cellalpha = bb.order(b).getFloat();
        cellbeta = bb.order(b).getFloat();
        cellgamma = bb.order(b).getFloat();

        for (int i = 0; i < 3; i++) {
            bb.order(b).getInt();
        }
        for (int i = 0; i < 3; i++) {
            bb.order(b).getFloat();
        }

        sg = bb.order(b).getInt();
        fis.close();
    } catch (Exception e) {
        String message = "Fatal exception reading CCP4 map.\n";
        logger.log(Level.SEVERE, message, e);
        System.exit(-1);
    }

    return new Crystal(cella, cellb, cellc, cellalpha, cellbeta, cellgamma, SpaceGroup.spaceGroupNames[sg - 1]);
}

---

From source file:au.org.ala.delta.io.BinFile.java

public void writeByte(byte b) {
    try {//from ww  w  . j  ava  2s  .  c o m
        // _file.write(b);
        ByteBuffer bb = ByteBuffer.allocate(1);
        bb.order(ByteOrder.LITTLE_ENDIAN);
        bb.put(b);
        bb.position(0);
        _channel.write(bb);
    } catch (IOException ioex) {
        throw new RuntimeException(ioex);
    }
}

---

From source file:xbird.util.nio.RemoteMemoryMappedFile.java

private int[] recvResponse(final ReadableByteChannel channel, final ByteBuffer buf, final int dstlen)
        throws IOException {
    buf.clear();//from  w  w  w .j a  v a 2  s .c om
    // set endian optimized for this machine
    final boolean isBufBigEndian = (buf.order() == ByteOrder.BIG_ENDIAN);
    if (_bigEndian != isBufBigEndian) {
        buf.order(_bigEndian ? ByteOrder.BIG_ENDIAN : ByteOrder.LITTLE_ENDIAN);
    }
    NIOUtils.readFully(channel, buf, _pageSize);
    buf.flip();
    IntBuffer ibuf = buf.asIntBuffer();
    int[] dst = new int[dstlen];
    ibuf.get(dst);
    return dst;
}

---

From source file:au.org.ala.delta.io.BinFile.java

public void writeInts(int[] values) {
    ByteBuffer b = ByteBuffer.allocate(values.length * 4);
    b.order(ByteOrder.LITTLE_ENDIAN);
    for (int value : values) {
        b.putInt(value);//ww w .ja  v a 2s  . c o  m
    }
    writeBytes(b);
}

---

From source file:au.org.ala.delta.io.BinFile.java

public void writeBytes(byte[] buffer) {
    try {//  www. ja  va  2 s  . c o  m
        ByteBuffer bb = ByteBuffer.allocate(buffer.length);
        bb.order(ByteOrder.LITTLE_ENDIAN);
        bb.put(buffer);
        bb.position(0);
        _channel.write(bb);
        // _file.write(buffer);
    } catch (IOException ioex) {
        throw new RuntimeException(ioex);
    }
}

---

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