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:Main.java

public static byte[] makeFontBitmap(String font, String code, int size, float[] arrayOfPos) {
    Canvas c = new Canvas();
    Paint p = new Paint();
    float density = context.getResources().getDisplayMetrics().density;
    //        Log.v(TAG, String.format("makeFontBitmap called(Java): font=%s code=%s density=%f", font, code, density));
    p.setTextSize((float) size * density);
    p.setAntiAlias(true);/*from   w  w  w.j a  va  2 s  . c  om*/

    Rect textBounds = new Rect();
    p.getTextBounds(code, 0, code.length(), textBounds);
    //        Log.v(TAG, String.format("makeFontBitmap textBounds: %d,%d,%d,%d", textBounds.left, textBounds.top, textBounds.right, textBounds.bottom));

    Rect textBoundsAxA = new Rect();
    String axa = String.format("A%sA", code);
    p.getTextBounds(axa, 0, axa.length(), textBoundsAxA);
    Rect textBoundsAA = new Rect();
    String aa = "AA";
    p.getTextBounds(aa, 0, aa.length(), textBoundsAA);

    // cache.distDelta = Vec2(0, 0);
    arrayOfPos[0] = textBounds.left;
    arrayOfPos[1] = textBounds.top;

    // cache.srcWidth = Vec2(16, 16);
    arrayOfPos[2] = textBounds.width();
    arrayOfPos[3] = textBounds.height();

    // cache.step = 16;
    //      arrayOfPos[4] = textBounds.width() + 1;
    arrayOfPos[4] = textBoundsAxA.width() - textBoundsAA.width();

    if (textBounds.width() == 0 || textBounds.height() == 0) {
        Log.v(TAG, "makeFontBitmap: empty");
        return null;
    }

    Bitmap b = Bitmap.createBitmap(textBounds.width(), textBounds.height(), Bitmap.Config.ARGB_8888);
    c.setBitmap(b);

    Rect r = new Rect(0, 0, textBounds.width(), textBounds.height());
    //      p.setColor(Color.RED);
    p.setARGB(0, 0, 0, 0);
    c.drawRect(r, p);
    p.setARGB(255, 255, 255, 255);

    //        Log.v(TAG, "makeFontBitmap: drawText");
    c.drawText(code, -textBounds.left, -textBounds.top, p);
    //        Log.v(TAG, String.format("makeFontBitmap: w=%.2f h=%.2f", arrayOfPos[2], arrayOfPos[3]));

    ByteBuffer buf = ByteBuffer.allocate(textBounds.width() * textBounds.height() * 4);
    //        Log.v(TAG, String.format("makeFontBitmap: b.getRowBytes() %d", b.getRowBytes()));
    buf.position(0);
    b.copyPixelsToBuffer(buf);
    //        Log.v(TAG, String.format("makeFontBitmap results: capacity=%d", buf.capacity()));

    return buf.array();
}

From source file:com.icloud.framework.core.util.FBUtilities.java

public static void writeByteArray(ByteBuffer bytes, DataOutput out) throws IOException {
    out.writeInt(bytes.remaining());//from ww  w.j  a  v  a  2s.  c o  m
    out.write(bytes.array(), bytes.position() + bytes.arrayOffset(), bytes.remaining());
}

From source file:edu.berkeley.sparrow.examples.ProtoFrontendAsync.java

public static List<TTaskSpec> generateJob(int numTasks, int benchmarkId, int benchmarkIterations) {
    // Pack task parameters
    ByteBuffer message = ByteBuffer.allocate(8);
    message.putInt(benchmarkId);// www .ja v a 2s .  c  o m
    message.putInt(benchmarkIterations);

    List<TTaskSpec> out = new ArrayList<TTaskSpec>();
    for (int taskId = 0; taskId < numTasks; taskId++) {
        TTaskSpec spec = new TTaskSpec();
        spec.setTaskId(Integer.toString(taskId));
        spec.setMessage(message.array());
        out.add(spec);
    }
    return out;
}

From source file:topoos.APIAccess.mime.HttpMultipart.java

/**
 * Encode./*  w ww  .j a va 2s .  c o m*/
 *
 * @param charset the charset
 * @param string the string
 * @return the byte array buffer
 */
private static ByteArrayBuffer encode(final Charset charset, final String string) {
    ByteBuffer encoded = charset.encode(CharBuffer.wrap(string));
    ByteArrayBuffer bab = new ByteArrayBuffer(encoded.remaining());
    bab.append(encoded.array(), encoded.position(), encoded.remaining());
    return bab;
}

From source file:io.github.dsheirer.record.wave.WaveWriter.java

public static String toString(ByteBuffer buffer) {
    StringBuilder sb = new StringBuilder();

    byte[] bytes = buffer.array();

    for (byte b : bytes) {
        sb.append(String.format("%02X ", b));
        sb.append(" ");
    }// w w w  .j ava  2 s .c  om

    return sb.toString();
}

From source file:com.codelanx.codelanxlib.util.auth.UUIDFetcher.java

/**
 * Converts a {@link UUID} into bytes/* ww w. j  a  va  2 s  .  c  om*/
 * 
 * @since 0.0.1
 * @version 0.0.1
 * 
 * @param uuid The {@link UUID} to convert
 * @return The new byte array
 */
public static byte[] toBytes(UUID uuid) {
    ByteBuffer byteBuffer = ByteBuffer.wrap(new byte[16]);
    byteBuffer.putLong(uuid.getMostSignificantBits());
    byteBuffer.putLong(uuid.getLeastSignificantBits());
    return byteBuffer.array();
}

From source file:io.stallion.utils.GeneralUtils.java

/**
 * Turn the given long id into a random base32 string token. This can be used for generating unique, secret strings
 * for accessing data, such as a web page only viewable by a secret string. By using the long id, of the
 * underlying object we guarantee uniqueness, by adding on  random characters, we make the URL nigh
 * impossible to guess.// ww w .j av  a  2  s. c om
 *
 * @param id - a long id that will be convered to base32 and used as the first part of the string
 * @param length - the number of random base32 characters to add to the end of the string
 * @return
 */
public static String tokenForId(Long id, int length) {
    ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
    buffer.putLong(id);
    return StringUtils.stripStart(new Base32().encodeAsString(buffer.array()), "A").replace("=", "")
            .toLowerCase() + "8" + randomTokenBase32(length);
}

From source file:org.lable.rfc3881.auditlogger.adapter.hbase.HBaseAdapter.java

static byte[] columnQualifierSuffixFor(Identifiable identifiable) {
    List<String> parts = identifiable.identifyingStack();
    // Account for the separator bytes.
    int targetLength = parts.size() - 1;
    for (String part : parts) {
        if (part != null) {
            targetLength += part.length();
        }//from  w w w .  j  a v  a 2  s  .  c  o m
    }

    ByteBuffer buffer = ByteBuffer.allocate(targetLength);
    boolean first = true;
    for (String part : parts) {
        if (!first) {
            buffer.put(NULL_BYTE);
        } else {
            first = false;
        }

        if (part != null) {
            buffer.put(toBytes(part));
        }
    }

    return buffer.array();
}

From source file:com.mozilla.bagheera.util.IdUtil.java

/**
 * Takes a given id and prefixes it with a byte character and the date in a non-random fashion
 * This method expects id to be something like a UUID consisting only of hex characters.  If id 
 * is something else this will produce unpredictable results.
 * @param id/*from  w ww .ja  va 2s.com*/
 * @param d
 * @return
 * @throws IOException
 */
public static byte[] nonRandByteBucketizeId(String id, Date d) throws IOException {
    if (StringUtils.isBlank(id)) {
        throw new IllegalArgumentException("id cannot be null or empty");
    }
    if (d == null) {
        throw new IllegalArgumentException("date cannot be null");
    }

    // bucket byte + SDF bytes + id bytes
    ByteBuffer buf = ByteBuffer.allocate(9 + id.length());
    int bucket = 0;
    if (id.length() >= 2) {
        // Munge two hex characters into the range of a single byte
        bucket = Integer.parseInt(id.substring(0, 2), 16) - 128;
    } else {
        bucket = Integer.parseInt(id, 16) - 128;
    }
    buf.put((byte) bucket);
    buf.put(SDF.format(d).getBytes());
    buf.put(id.getBytes());

    return buf.array();
}

From source file:com.twitter.distributedlog.DLMTestUtil.java

public static LogRecord getLogRecordInstance(long txId, int size) {
    ByteBuffer buf = ByteBuffer.allocate(size);
    return new LogRecord(txId, buf.array());
}