Examples with ShortBuffer java.nio.ShortBuffer used on opensource projects

Example 56 with ShortBuffer

use of java.nio.ShortBuffer in project android_frameworks_base by crdroidandroid.

the class DhcpPacket method checksum.

/**
     * Performs an IP checksum (used in IP header and across UDP
     * payload) on the specified portion of a ByteBuffer.  The seed
     * allows the checksum to commence with a specified value.
     */
private int checksum(ByteBuffer buf, int seed, int start, int end) {
    int sum = seed;
    int bufPosition = buf.position();
    // set position of original ByteBuffer, so that the ShortBuffer
    // will be correctly initialized
    buf.position(start);
    ShortBuffer shortBuf = buf.asShortBuffer();
    // re-set ByteBuffer position
    buf.position(bufPosition);
    short[] shortArray = new short[(end - start) / 2];
    shortBuf.get(shortArray);
    for (short s : shortArray) {
        sum += intAbs(s);
    }
    start += shortArray.length * 2;
    // see if a singleton byte remains
    if (end != start) {
        short b = buf.get(start);
        // make it unsigned
        if (b < 0) {
            b += 256;
        }
        sum += b * 256;
    }
    sum = ((sum >> 16) & 0xFFFF) + (sum & 0xFFFF);
    sum = ((sum + ((sum >> 16) & 0xFFFF)) & 0xFFFF);
    int negated = ~sum;
    return intAbs((short) negated);
}

Example 57 with ShortBuffer

use of java.nio.ShortBuffer in project android_frameworks_base by crdroidandroid.

the class IpUtils method checksum.

/**
     * Performs an IP checksum (used in IP header and across UDP
     * payload) on the specified portion of a ByteBuffer.  The seed
     * allows the checksum to commence with a specified value.
     */
private static int checksum(ByteBuffer buf, int seed, int start, int end) {
    int sum = seed;
    final int bufPosition = buf.position();
    // set position of original ByteBuffer, so that the ShortBuffer
    // will be correctly initialized
    buf.position(start);
    ShortBuffer shortBuf = buf.asShortBuffer();
    // re-set ByteBuffer position
    buf.position(bufPosition);
    final int numShorts = (end - start) / 2;
    for (int i = 0; i < numShorts; i++) {
        sum += intAbs(shortBuf.get(i));
    }
    start += numShorts * 2;
    // see if a singleton byte remains
    if (end != start) {
        short b = buf.get(start);
        // make it unsigned
        if (b < 0) {
            b += 256;
        }
        sum += b * 256;
    }
    sum = ((sum >> 16) & 0xFFFF) + (sum & 0xFFFF);
    sum = ((sum + ((sum >> 16) & 0xFFFF)) & 0xFFFF);
    int negated = ~sum;
    return intAbs((short) negated);
}

Example 58 with ShortBuffer

use of java.nio.ShortBuffer in project jwt by emweb.

the class WServerGLWidget method bufferDataiv.

@Override
public void bufferDataiv(WGLWidget.GLenum target, java.nio.IntBuffer buffer, WGLWidget.GLenum usage, WGLWidget.GLenum type) {
    buffer.rewind();
    ShortBuffer sb = ShortBuffer.allocate(buffer.capacity());
    for (int i = 0; i < buffer.capacity(); i++) {
        sb.put((short) buffer.get(i));
    }
    sb.rewind();
    glCtx_.glBufferData(serverGLenum(target), sb.capacity() * 2, sb, serverGLenum(usage));
    if (debug_)
        System.out.println(glCtx_.glGetError());
}

Example 59 with ShortBuffer

use of java.nio.ShortBuffer in project lavaplayer by sedmelluq.

the class FinalPcmAudioFilter method process.

@Override
public void process(ShortBuffer buffer) throws InterruptedException {
    if (ignoredFrames > 0) {
        long skipped = Math.min(buffer.remaining(), ignoredFrames);
        buffer.position(buffer.position() + (int) skipped);
        ignoredFrames -= skipped;
    }
    ShortBuffer local = buffer.duplicate();
    while (buffer.remaining() > 0) {
        int chunk = Math.min(buffer.remaining(), frameBuffer.remaining());
        local.position(buffer.position());
        local.limit(local.position() + chunk);
        frameBuffer.put(local);
        dispatch();
        buffer.position(buffer.position() + chunk);
    }
}

Example 60 with ShortBuffer

use of java.nio.ShortBuffer in project twister2 by DSC-SPIDAL.

the class TestBinaryFileFormatter method main.

public static void main(String[] args) {
    Config.Builder builder = new Config.Builder();
    builder.put("input.file.path", "/home/pulasthi/git/twister2/twister2/" + "data/src/test/resources/2000.bin");
    Config txtFileConf = builder.build();
    Path path = new Path("/home/pulasthi/git/twister2/twister2/data/src/test/resources/2000.bin");
    InputFormat binaryInputFormatter = new BinaryInputFormatter(path, 2000 * Short.BYTES);
    binaryInputFormatter.configure(txtFileConf);
    int minSplits = 8;
    double expectedSum = 1.97973979E8;
    double newSum = 0.0;
    int count = 0;
    Buffer buffer = null;
    try {
        InputSplit[] inputSplits = binaryInputFormatter.createInputSplits(minSplits);
        InputSplitAssigner inputSplitAssigner = binaryInputFormatter.getInputSplitAssigner(inputSplits);
        InputSplit currentSplit;
        byte[] line = new byte[4000];
        ByteBuffer byteBuffer = ByteBuffer.allocate(4000);
        byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
        while ((currentSplit = inputSplitAssigner.getNextInputSplit(null, 0)) != null) {
            binaryInputFormatter.open(currentSplit);
            while (binaryInputFormatter.nextRecord(line) != null) {
                byteBuffer.clear();
                byteBuffer.put(line);
                byteBuffer.flip();
                buffer = byteBuffer.asShortBuffer();
                short[] shortArray = new short[2000];
                ((ShortBuffer) buffer).get(shortArray);
                for (short i : shortArray) {
                    newSum += i;
                    count++;
                }
            }
        }
        System.out.println(newSum);
        System.out.println(count);
    } catch (Exception e) {
        e.printStackTrace();
    }
}