Example usage for java.nio ByteBuffer array

Introduction

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

Prototype

public final byte[] array()

Source Link

Document

Returns the byte array which this buffer is based on, if there is one.

Usage

From source file:com.icloud.framework.core.nio.ByteBufferUtil.java

public static int compare(ByteBuffer o1, byte[] o2) {
    return compareUnsigned(o1.array(), o2, o1.arrayOffset() + o1.position(), 0, o1.limit() + o1.arrayOffset(),
            o2.length);/*w w  w.j  a  v a  2 s.co m*/
}

From source file:com.jadarstudios.rankcapes.bukkit.CapePackValidator.java

/**
 * Utility method to detect if the bytes given are a zip file.
 *
 * @param bytes the bytes of the file//from  ww  w.  ja v  a  2s  . c  o m
 *
 * @return if it is a zip file
 */
public static boolean isZipFile(byte[] bytes) {
    ByteArrayInputStream input = new ByteArrayInputStream(bytes);

    ByteBuffer buffer = ByteBuffer.allocate(4);
    input.read(buffer.array(), 0, buffer.capacity());

    short packIdentifier = buffer.getShort();

    return packIdentifier == ZIP_IDENTIFIER;
}

From source file:foss.filemanager.core.Utils.java

static byte[] encode(byte[] arr, Charset srcCharset, Charset dstCharset) {
    ByteBuffer inputBuffer = ByteBuffer.wrap(arr);
    CharBuffer data = srcCharset.decode(inputBuffer);
    ByteBuffer outputBuffer = dstCharset.encode(data);
    byte[] outputData = outputBuffer.array();

    return outputData;
}

From source file:Com.Operaciones.java

public static InputStream generateBarras(String text, int h, int w) throws Exception {

    Charset charset = Charset.forName("ISO-8859-1");
    CharsetEncoder encoder = charset.newEncoder();
    byte[] b = null;
    ByteBuffer bbuf = encoder.encode(CharBuffer.wrap(text));
    b = bbuf.array();
    String data = new String(b, "ISO-8859-1");
    // get a byte matrix for the data

    BitMatrix matrix = null;//from  w ww.j  a va  2  s .c o m

    matrix = new Code128Writer().encode(data, BarcodeFormat.CODE_128, w, h, null);

    int height = matrix.getHeight();
    int width = matrix.getWidth();
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    for (int x = 0; x < width; x++) {
        for (int y = 0; y < height; y++) {
            image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
        }
    }

    byte[] imgByte = ChartUtilities.encodeAsPNG(image);

    InputStream myInputStream = new ByteArrayInputStream(imgByte);

    return myInputStream;

}

From source file:Main.java

/**
 * Finds the percentage of pixels that do are empty.
 *
 * @param bitmap input bitmap/*  www. j a va  2s.c  o  m*/
 * @return a value between 0.0 to 1.0 . Note the method will return 0.0 if either of bitmaps are null nor of same size.
 *
 */
public static float getTransparentPixelPercent(Bitmap bitmap) {

    if (bitmap == null) {
        return 0f;
    }

    ByteBuffer buffer = ByteBuffer.allocate(bitmap.getHeight() * bitmap.getRowBytes());
    bitmap.copyPixelsToBuffer(buffer);

    byte[] array = buffer.array();

    int len = array.length;
    int count = 0;

    for (int i = 0; i < len; i++) {
        if (array[i] == 0) {
            count++;
        }
    }

    return ((float) (count)) / len;
}

From source file:com.icloud.framework.core.nio.ByteBufferUtil.java

public static int compareUnsigned(ByteBuffer o1, ByteBuffer o2) {
    return compareUnsigned(o1.array(), o2.array(), o1.arrayOffset() + o1.position(),
            o2.arrayOffset() + o2.position(), o1.limit() + o1.arrayOffset(), o2.limit() + o2.arrayOffset());
}

From source file:Main.java

public static byte[] padRight(byte[] tgt, int len, byte padding) {
    if (tgt.length >= len) {
        return tgt;
    }/*w w w .j  a v  a2  s . co m*/
    byte[] paddings = new byte[len - tgt.length];
    Arrays.fill(paddings, padding);
    ByteBuffer buffer = ByteBuffer.allocate(len);

    buffer.put(tgt);
    buffer.put(paddings);

    return buffer.array();
}

From source file:Main.java

/**
 * Generates a Base64 version of UUID//from  w  ww  .j a  v  a 2  s .c o m
 * @return a string in Base64 URL-safe format without padding at the end and no wrapping
 */
public static String randomUuidBase64() {
    UUID uuid = UUID.randomUUID();
    ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
    bb.putLong(uuid.getMostSignificantBits());
    bb.putLong(uuid.getLeastSignificantBits());
    return encodeUrlSafe64(bb.array());
}

From source file:Main.java

public static byte[] genSirfCommand(String commandHexa) {
    int length = commandHexa.length() / 2;
    ByteBuffer command = ByteBuffer.allocate(length);
    command.put(new BigInteger(commandHexa, 16).toByteArray(), 1, length);
    return command.array();
}

From source file:Main.java

public static final int compareToP(ByteBuffer bb1, ByteBuffer bb2) {
    final int offset1 = bb1.position();
    final int offset2 = bb2.position();
    final byte[] array1 = bb1.array();
    final byte[] array2 = bb2.array();
    final int len1 = bb1.remaining();
    final int len2 = bb2.remaining();
    return compareTo(array1, offset1, len1, array2, offset2, len2);
}