List of usage examples for java.nio ByteBuffer putFloat
public abstract ByteBuffer putFloat(float value);
From source file:au.org.ala.layers.grid.GridCacheBuilder.java
private static void writeGroupGRI(File file, ArrayList<Grid> group) { Grid g = group.get(0);// www .j av a 2 s . c o m RandomAccessFile[] raf = new RandomAccessFile[group.size()]; RandomAccessFile output = null; try { output = new RandomAccessFile(file, "rw"); for (int i = 0; i < group.size(); i++) { raf[i] = new RandomAccessFile(group.get(i).filename + ".gri", "r"); } int length = g.ncols * g.nrows; int size = 4; byte[] b = new byte[size * group.size() * g.ncols]; float noDataValue = Float.MAX_VALUE * -1; byte[] bi = new byte[g.ncols * 8]; float[][] rows = new float[group.size()][g.ncols]; for (int i = 0; i < g.nrows; i++) { //read for (int j = 0; j < raf.length; j++) { nextRowOfFloats(rows[j], group.get(j).datatype, group.get(j).byteorderLSB, g.ncols, raf[j], bi, (float) g.nodatavalue); } //write ByteBuffer bb = ByteBuffer.wrap(b); bb.order(ByteOrder.LITTLE_ENDIAN); for (int k = 0; k < g.ncols; k++) { for (int j = 0; j < raf.length; j++) { //float f = getNextValue(raf[j], group.get(j)); float f = rows[j][k]; if (Float.isNaN(f)) { bb.putFloat(noDataValue); } else { bb.putFloat(f); } } } output.write(b); } } catch (IOException e) { logger.error(e.getMessage(), e); } finally { if (output != null) { try { output.close(); } catch (Exception e) { logger.error(e.getMessage(), e); } } for (int i = 0; i < raf.length; i++) { if (raf[i] != null) { try { raf[i].close(); } catch (Exception e) { logger.error(e.getMessage(), e); } } } } }
From source file:org.getspout.spoutapi.packet.PacketBlockData.java
public PacketBlockData(Set<Block> modifiedData) { if (modifiedData.size() > 0) { ByteBuffer rawData = ByteBuffer.allocate(modifiedData.size() * (15)); Iterator<Block> i = modifiedData.iterator(); while (i.hasNext()) { Block next = i.next();// w ww . j a v a 2 s. c om rawData.put((byte) next.getRawId()); rawData.put((byte) next.getRawData()); rawData.putFloat(next.getHardness()); rawData.putInt(next.getLightLevel()); rawData.putFloat(next.getFriction()); rawData.put((byte) (next.isOpaque() ? 1 : 0)); } data = rawData.array(); } }
From source file:indexer.DocVector.java
byte[] getVecBytes(float[] x) { ByteBuffer buff = ByteBuffer.allocate(Float.SIZE * x.length); for (float xval : x) buff.putFloat(xval); byte[] bytes = buff.array(); return bytes; }
From source file:au.org.ala.delta.io.BinaryKeyFile.java
public int writeFloatsToRecord(int recordNumber, List<Float> values) { ByteBuffer bytes = ByteBuffer.allocate(values.size() * SIZE_INT_IN_BYTES); bytes.order(ByteOrder.LITTLE_ENDIAN); for (float value : values) { bytes.putFloat(value); }//from w w w. j av a2 s .c o m return writeToRecord(recordNumber, 0, bytes.array()); }
From source file:edu.umn.cs.spatialHadoop.visualization.FrequencyMap.java
@Override public void write(DataOutput out) throws IOException { super.write(out); ByteArrayOutputStream baos = new ByteArrayOutputStream(); GZIPOutputStream gzos = new GZIPOutputStream(baos); ByteBuffer bbuffer = ByteBuffer.allocate(getHeight() * 4 + 8); bbuffer.putInt(getWidth());/*from w w w.j a va2 s. c o m*/ bbuffer.putInt(getHeight()); gzos.write(bbuffer.array(), 0, bbuffer.position()); for (int x = 0; x < getWidth(); x++) { bbuffer.clear(); for (int y = 0; y < getHeight(); y++) { bbuffer.putFloat(frequencies[x][y]); } gzos.write(bbuffer.array(), 0, bbuffer.position()); } gzos.close(); byte[] serializedData = baos.toByteArray(); out.writeInt(serializedData.length); out.write(serializedData); }
From source file:com.abs.mdu.bluetoothchat.BluetoothChatFragment.java
private void sendMsg(float progress, byte cmd) throws IOException { String s = ""; byte[] temperature_msg = new byte[11]; Arrays.fill(temperature_msg, (byte) 0); ByteBuffer buffer = ByteBuffer.allocate(4); buffer.putFloat(progress); byte[] byte_progress = new byte[4]; ;/*from ww w . j av a2s . co m*/ Arrays.fill(byte_progress, (byte) 0); byte_progress = buffer.array(); temperature_msg[0] = start_byte; //length in the end temperature_msg[2] = opc; temperature_msg[3] = (byte) id; temperature_msg[4] = cmd; temperature_msg[5] = status; temperature_msg[6] = (byte) byte_progress[3]; temperature_msg[7] = (byte) byte_progress[2]; temperature_msg[8] = (byte) byte_progress[1]; temperature_msg[9] = (byte) byte_progress[0]; temperature_msg[1] = (byte) (temperature_msg.length - 2); byte crc, i; crc = 0; for (i = 0; i < temperature_msg.length; i++) { crc ^= temperature_msg[i]; } temperature_msg[10] = ((byte) crc); /* Charset mycharset = defaultCharset(); //length must be in the end, when msg is completely build; //best working, only missing negative charaters thar are trasnlated into more the one bytes String temperature_msg_string = new String(temperature_msg, mycharset); //must put the correct encoding for the negatives if(temperature_msg_string.length() != 11 ) { temperature_msg_string = "Error size = " + temperature_msg_string.length(); } //mOutEditText.setText(temperature_msg_string); */ mChatService.write(temperature_msg); // Reset out string buffer to zero and clear the edit text field mOutStringBuffer.setLength(0); mOutEditText.setText(mOutStringBuffer); id++; //mSendButton.callOnClick(); }
From source file:com.linkedin.pinot.core.startree.MmapLinkedListStarTreeTable.java
@Override protected ByteBuffer toByteBuffer(StarTreeTableRow row) { ByteBuffer buffer = getNextBuffer(); for (int i = 0; i < dimensionTypes.size(); i++) { buffer.putInt(row.getDimensions().get(i)); }//from w ww. ja v a 2 s. c o m for (int i = 0; i < metricTypes.size(); i++) { switch (metricTypes.get(i)) { case SHORT: buffer.putShort(row.getMetrics().get(i).shortValue()); break; case INT: buffer.putInt(row.getMetrics().get(i).intValue()); break; case LONG: buffer.putLong(row.getMetrics().get(i).longValue()); break; case FLOAT: buffer.putFloat(row.getMetrics().get(i).floatValue()); break; case DOUBLE: buffer.putDouble(row.getMetrics().get(i).doubleValue()); break; default: throw new IllegalArgumentException("Unsupported metric type " + metricTypes.get(i)); } } return buffer; }
From source file:org.deegree.tools.rendering.dem.builder.DEMDatasetGenerator.java
private void put(ByteBuffer buffer, float value, int bytesPerValue) { if (bytesPerValue == 4) { buffer.putFloat(value); } else if (bytesPerValue == 2) { short s = 0; if (value < 1) { s = (short) (32768.0f * value); } else {/*w w w. j a v a 2 s .c o m*/ s = (short) (32767.0f * value); } buffer.putShort(s); } else if (bytesPerValue == 1) { byte b = 0; if (value < 1) { b = (byte) (128.0f * value); } else { b = (byte) (127.0f * value); } buffer.put(b); } }
From source file:org.wso2.carbon.analytics.datasource.core.util.GenericUtils.java
public static byte[] encodeElement(String name, Object value) throws AnalyticsException { ByteBuffer buffer = ByteBuffer.allocate(calculateBufferSizePerElement(name, value)); String strVal;//from w ww. java2 s . c om boolean boolVal; byte[] binData; buffer.putInt(name.getBytes(StandardCharsets.UTF_8).length); buffer.put(name.getBytes(StandardCharsets.UTF_8)); if (value instanceof String) { buffer.put(DATA_TYPE_STRING); strVal = (String) value; buffer.putInt(strVal.getBytes(StandardCharsets.UTF_8).length); buffer.put(strVal.getBytes(StandardCharsets.UTF_8)); } else if (value instanceof Long) { buffer.put(DATA_TYPE_LONG); buffer.putLong((Long) value); } else if (value instanceof Double) { buffer.put(DATA_TYPE_DOUBLE); buffer.putDouble((Double) value); } else if (value instanceof Boolean) { buffer.put(DATA_TYPE_BOOLEAN); boolVal = (Boolean) value; if (boolVal) { buffer.put(BOOLEAN_TRUE); } else { buffer.put(BOOLEAN_FALSE); } } else if (value instanceof Integer) { buffer.put(DATA_TYPE_INTEGER); buffer.putInt((Integer) value); } else if (value instanceof Float) { buffer.put(DATA_TYPE_FLOAT); buffer.putFloat((Float) value); } else if (value instanceof byte[]) { buffer.put(DATA_TYPE_BINARY); binData = (byte[]) value; buffer.putInt(binData.length); buffer.put(binData); } else if (value == null) { buffer.put(DATA_TYPE_NULL); } else { buffer.put(DATA_TYPE_OBJECT); binData = GenericUtils.serializeObject(value); buffer.putInt(binData.length); buffer.put(binData); } return buffer.array(); }
From source file:hivemall.recommend.SlimUDTF.java
private void recordTrainingInput(final int itemI, @Nonnull final Int2ObjectMap<Int2FloatMap> knnItems, final int numKNNItems) throws HiveException { ByteBuffer buf = this._inputBuf; NioStatefulSegment dst = this._fileIO; if (buf == null) { // invoke only at task node (initialize is also invoked in compilation) final File file; try {// ww w . java 2s .c o m file = File.createTempFile("hivemall_slim", ".sgmt"); // to save KNN data file.deleteOnExit(); if (!file.canWrite()) { throw new UDFArgumentException("Cannot write a temporary file: " + file.getAbsolutePath()); } } catch (IOException ioe) { throw new UDFArgumentException(ioe); } this._inputBuf = buf = ByteBuffer.allocateDirect(8 * 1024 * 1024); // 8MB this._fileIO = dst = new NioStatefulSegment(file, false); } int recordBytes = SizeOf.INT + SizeOf.INT + SizeOf.INT * 2 * knnItems.size() + (SizeOf.INT + SizeOf.FLOAT) * numKNNItems; int requiredBytes = SizeOf.INT + recordBytes; // need to allocate space for "recordBytes" itself int remain = buf.remaining(); if (remain < requiredBytes) { writeBuffer(buf, dst); } buf.putInt(recordBytes); buf.putInt(itemI); buf.putInt(knnItems.size()); for (Int2ObjectMap.Entry<Int2FloatMap> e1 : Fastutil.fastIterable(knnItems)) { int user = e1.getIntKey(); buf.putInt(user); Int2FloatMap ru = e1.getValue(); buf.putInt(ru.size()); for (Int2FloatMap.Entry e2 : Fastutil.fastIterable(ru)) { buf.putInt(e2.getIntKey()); buf.putFloat(e2.getFloatValue()); } } }