Example usage for java.nio ByteBuffer getInt

Introduction

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

Prototype

public abstract int getInt(int index);

Source Link

Document

Returns the int at the specified index.

Usage

From source file:com.codestation.henkakuserver.HenkakuServer.java

private Pair<ArrayList<Integer>, List<Byte>> preprocessRop(byte[] urop) throws Exception {

    byte[] loader = new byte[urop.length + ((-urop.length) & 3)];
    System.arraycopy(urop, 0, loader, 0, urop.length);

    ByteBuffer buf = ByteBuffer.wrap(loader).order(ByteOrder.LITTLE_ENDIAN);

    int header_size = 0x40;

    int dsize = buf.getInt(0x10);
    int csize = buf.getInt(0x20);
    int reloc_size = buf.getInt(0x30);
    int symtab_size = buf.getInt(0x38);

    if (csize % 4 != 0) {
        throw new Exception("csize % 4 != 0???");
    }//from ww w  . j  av  a  2  s. co m

    int reloc_offset = header_size + dsize + csize;
    int symtab = reloc_offset + reloc_size;
    int symtab_n = symtab_size / 8;

    Map<Integer, String> reloc_map = new HashMap<>();

    for (int x = 0; x < symtab_n; ++x) {
        int sym_id = buf.getInt(symtab + 8 * x);
        int str_offset = buf.getInt(symtab + 8 * x + 4);
        int end = str_offset;

        while (loader[end] != 0) {
            end += 1;
        }

        String name = new String(Arrays.copyOfRange(loader, str_offset, end));
        reloc_map.put(sym_id, name);
    }

    Map<Pair<String, Integer>, Integer> reloc_type_map = new HashMap<>();

    reloc_type_map.put(new Pair<>("rop.data", 0), 1);
    reloc_type_map.put(new Pair<>("SceWebKit", 0), 2);
    reloc_type_map.put(new Pair<>("SceLibKernel", 0), 3);
    reloc_type_map.put(new Pair<>("SceLibc", 0), 4);
    reloc_type_map.put(new Pair<>("SceLibHttp", 0), 5);
    reloc_type_map.put(new Pair<>("SceNet", 0), 6);
    reloc_type_map.put(new Pair<>("SceAppMgr", 0), 7);

    int want_len = 0x40 + dsize + csize;

    ArrayList<Integer> urop_js = new ArrayList<>();
    byte[] relocs = new byte[want_len / 4];

    int reloc_n = reloc_size / 8;
    for (int x = 0; x < reloc_n; ++x) {
        int reloc_type = buf.getShort(reloc_offset + 8 * x);
        int sym_id = buf.getShort(reloc_offset + 8 * x + 2);
        int offset = buf.getInt(reloc_offset + 8 * x + 4);

        if (offset % 4 != 0) {
            throw new Exception("offset % 4 != 0???");
        }

        if (relocs[offset / 4] != 0) {
            throw new Exception("symbol relocated twice, not supported");
        }

        Integer wk_reloc_type = reloc_type_map.get(new Pair<>(reloc_map.get(sym_id), reloc_type));

        if (wk_reloc_type == null) {
            throw new Exception("unsupported relocation type");
        }

        relocs[offset / 4] = wk_reloc_type.byteValue();
    }

    for (int x = 0; x < want_len; x += 4) {
        urop_js.add(buf.getInt(x));
    }

    List<Byte> relocsArray = Arrays.asList(ArrayUtils.toObject(relocs));

    return new Pair<>(urop_js, relocsArray);
}

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From source file:org.kalypso.grid.BinaryGeoGrid.java

/**
 * Gets the statistically values of this grid.
 * /*from   w  ww .j a  va  2  s. c o m*/
 * @throws IOException
 *           If the file position is not valid.
 */
private void readStatistically() throws IOException {
    final long pos = BinaryGeoGridHeader.HEADER_SIZE + getSizeX() * getSizeY() * 4;

    final ByteBuffer buffer = ByteBuffer.allocate(8);

    m_channel.position(pos);
    m_channel.read(buffer);

    m_unscaledMin = buffer.getInt(0);
    m_unscaledMax = buffer.getInt(4);
}

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From source file:org.getspout.spout.packet.PacketBlockData.java

public void run(int playerId) {
    if (data != null) {
        ByteBuffer result = ByteBuffer.allocate(data.length).put(data);
        for (int i = 0; i < data.length / 15; i++) {
            int index = i * 15;
            int id = result.get(index);
            short rawData = result.get(index + 1);
            Block block = MaterialData.getBlock(id, rawData);
            if (block != null) {
                block.setHardness(result.getFloat(index + 2));
                block.setLightLevel(result.getInt(index + 6));
                block.setFriction(result.getFloat(index + 10));
                block.setOpaque(result.get(index + 14) != 0);
            }//  w  w w. j a  va2 s  .com
        }
    }
}

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From source file:edu.mbl.jif.imaging.mmtiff.MultipageTiffReader.java

private void readIndexMap() throws IOException, MMException {
    long offset = readOffsetHeaderAndOffset(MultipageTiffWriter.INDEX_MAP_OFFSET_HEADER, 8);
    ByteBuffer header = readIntoBuffer(offset, 8);
    if (header.getInt(0) != MultipageTiffWriter.INDEX_MAP_HEADER) {
        throw new MMException("Error reading index map header");
    }/*from   www.  j  av a  2s . c  om*/
    int numMappings = header.getInt(4);
    indexMap_ = new HashMap<String, Long>();
    ByteBuffer mapBuffer = readIntoBuffer(offset + 8, 20 * numMappings);
    for (int i = 0; i < numMappings; i++) {
        int channel = mapBuffer.getInt(i * 20);
        int slice = mapBuffer.getInt(i * 20 + 4);
        int frame = mapBuffer.getInt(i * 20 + 8);
        int position = mapBuffer.getInt(i * 20 + 12);
        long imageOffset = unsignInt(mapBuffer.getInt(i * 20 + 16));
        indexMap_.put(MDUtils.generateLabel(channel, slice, frame, position), imageOffset);
    }
}

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From source file:edu.mbl.jif.imaging.mmtiff.MultipageTiffReader.java

private JSONObject readComments() {
    try {//from www .  j av a  2s  . c  om
        long offset = readOffsetHeaderAndOffset(MultipageTiffWriter.COMMENTS_OFFSET_HEADER, 24);
        ByteBuffer header = readIntoBuffer(offset, 8);
        if (header.getInt(0) != MultipageTiffWriter.COMMENTS_HEADER) {
            ReportingUtils.logError("Can't find image comments in file: " + file_.getName());
            return null;
        }
        ByteBuffer buffer = readIntoBuffer(offset + 8, header.getInt(4));
        return new JSONObject(getString(buffer));
    } catch (Exception ex) {
        ReportingUtils.logError("Can't find image comments in file: " + file_.getName());
        return null;
    }
}

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From source file:edu.mbl.jif.imaging.mmtiff.MultipageTiffReader.java

private JSONArray readDisplaySettings() {
    try {/*  w ww  . ja  v  a  2s . c o  m*/
        long offset = readOffsetHeaderAndOffset(MultipageTiffWriter.DISPLAY_SETTINGS_OFFSET_HEADER, 16);
        ByteBuffer header = readIntoBuffer(offset, 8);
        if (header.getInt(0) != MultipageTiffWriter.DISPLAY_SETTINGS_HEADER) {
            ReportingUtils.logError("Can't find display settings in file: " + file_.getName());
            return null;
        }
        ByteBuffer buffer = readIntoBuffer(offset + 8, header.getInt(4));
        return new JSONArray(getString(buffer));
    } catch (Exception ex) {
        ReportingUtils.logError("Can't find display settings in file: " + file_.getName());
        return null;
    }
}

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From source file:edu.mbl.jif.imaging.mmtiff.MultipageTiffReader.java

private long readOffsetHeaderAndOffset(int offsetHeaderVal, int startOffset) throws IOException {
    ByteBuffer buffer1 = readIntoBuffer(startOffset, 8);
    int offsetHeader = buffer1.getInt(0);
    if (offsetHeader != offsetHeaderVal) {
        throw new IOException(
                "Offset header incorrect, expected: " + offsetHeaderVal + "   found: " + offsetHeader);
    }/*from  ww  w .j  a v  a2s .c o m*/
    return unsignInt(buffer1.getInt(4));
}

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From source file:edu.mbl.jif.imaging.mmtiff.MultipageTiffReader.java

private JSONObject readSummaryMD() {
    try {//from  w w  w.java2s. c om
        ByteBuffer mdInfo = ByteBuffer.allocate(8).order(byteOrder_);
        fileChannel_.read(mdInfo, 32);
        int header = mdInfo.getInt(0);
        int length = mdInfo.getInt(4);

        if (header != MultipageTiffWriter.SUMMARY_MD_HEADER) {
            ReportingUtils.logError("Summary Metadata Header Incorrect");
            return null;
        }

        ByteBuffer mdBuffer = ByteBuffer.allocate(length);
        fileChannel_.read(mdBuffer, 40);
        JSONObject summaryMD = new JSONObject(getString(mdBuffer));

        //Summary MD written start of acquisition and never changed, this code makes sure acquisition comment
        //field is current
        if (displayAndComments_ != null && displayAndComments_.has("Comments")
                && displayAndComments_.getJSONObject("Comments").has("Summary")) {
            summaryMD.put("Comment", displayAndComments_.getJSONObject("Comments").getString("Summary"));
        }
        return summaryMD;
    } catch (Exception ex) {
        ReportingUtils.showError("Couldn't read summary Metadata from file: " + file_.getName());
        return null;
    }
}

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From source file:edu.mbl.jif.imaging.mmtiff.MultipageTiffReader.java

private IFDEntry readDirectoryEntry(int offset, ByteBuffer buffer) throws IOException {
    char tag = buffer.getChar(offset);
    char type = buffer.getChar(offset + 2);
    long count = unsignInt(buffer.getInt(offset + 4));
    long value;//from   w  ww  . ja va 2 s .c  om
    if (type == 3 && count == 1) {
        value = buffer.getChar(offset + 8);
    } else {
        value = unsignInt(buffer.getInt(offset + 8));
    }
    return (new IFDEntry(tag, type, count, value));
}

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From source file:guru.benson.pinch.Pinch.java

/**
 * Get a {@link java.net.HttpURLConnection} that has its {@link java.io.InputStream} pointing at
 * the file data of the given {@link guru.benson.pinch.ExtendedZipEntry}.
 *
 * @throws IOException//w  w w. j  av a  2  s.c o  m
 */
private HttpURLConnection getEntryInputStream(ExtendedZipEntry entry) throws IOException {
    HttpURLConnection conn;
    InputStream is;

    // Define the local header range
    long start = entry.getOffset();
    long end = start + ZipConstants.LOCHDR;

    conn = openConnection();
    conn.setRequestProperty("Range", "bytes=" + start + "-" + end);
    conn.setInstanceFollowRedirects(true);
    conn.connect();

    int responseCode = conn.getResponseCode();
    if (responseCode != HttpURLConnection.HTTP_PARTIAL) {
        throw new IOException("Unexpected HTTP server response: " + responseCode);
    }

    byte[] dataBuffer = new byte[2048];
    int read, bytes = 0;

    is = conn.getInputStream();
    while ((read = is.read(dataBuffer)) != -1) {
        bytes += read;
    }
    close(is);
    disconnect(conn);
    if (bytes < ZipConstants.LOCHDR) {
        throw new IOException("Unable to fetch the local header");
    }

    ByteBuffer buffer = ByteBuffer.allocate(ZipConstants.LOCHDR);
    buffer.order(ByteOrder.LITTLE_ENDIAN);
    buffer.put(dataBuffer, 0, ZipConstants.LOCHDR);

    final int headerSignature = buffer.getInt(0);
    if (headerSignature != 0x04034b50) {
        disconnect(conn);
        throw new IOException("Local file header signature mismatch");
    }

    final int localCompressedSize = buffer.getInt(ZipConstants.LOCSIZ);
    final short localFileNameLength = buffer.getShort(ZipConstants.LOCNAM);
    final short localExtraLength = buffer.getShort(ZipConstants.LOCEXT);

    // Define the local file range
    start = entry.getOffset() + ZipConstants.LOCHDR + localFileNameLength + localExtraLength;
    end = start + localCompressedSize;

    // Open a new one with
    conn = openConnection();
    conn.setRequestProperty("Range", "bytes=" + start + "-" + end);
    conn.setInstanceFollowRedirects(true);
    conn.connect();

    responseCode = conn.getResponseCode();
    if (responseCode != HttpURLConnection.HTTP_PARTIAL) {
        disconnect(conn);
        close(is);
        throw new IOException("Unexpected HTTP server response: " + responseCode);
    }

    return conn;
}

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