Examples of java.nio.ByteBuffer.asFloatBuffer()

java.nio.ByteBuffer.asFloatBuffer()
Returns a float buffer which is based on the remaining content of this byte buffer.
The new buffer's position is zero, its limit and capacity is the number of remaining bytes divided by two, and its mark is not set. The new buffer's readonly property and byte order are same as this buffer. The new buffer is direct, if this byte buffer is direct.

The new buffer shares content with this buffer, which means either buffer's change of content will be visible to the other. The two buffer's position, limit and mark are independent.
@return A float buffer which is based on the content ofthis byte buffer.

      ja[i] = iter.getFloatNext();
  }


  public ByteBuffer getDataAsByteBuffer() {
    ByteBuffer bb = ByteBuffer.allocate((int)(4*getSize()));
    FloatBuffer ib = bb.asFloatBuffer();
    ib.put( (float[]) get1DJavaArray(float.class)); // make sure its in canonical order
    return bb;
  }


 /** Return the element class type */

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  }


  static public void testNIO(String filenameIn, String filenameOut, long kbchunks) throws IOException {


    ByteBuffer bb = ByteBuffer.allocate(8*1000);
    FloatBuffer fb = bb.asFloatBuffer();
  }


  static public void readFile(String filenameIn, int bufferSize) throws IOException {
    long lenIn = new File(filenameIn).length();
    if (debug) System.out.println("read " + filenameIn + " len = " + lenIn);

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            } else if (out instanceof DataBufferDouble) {
                double[] a = ((DataBufferDouble)out).getData();
                flipCopyWithGamma(in.asDoubleBuffer(), widthStep()/8, DoubleBuffer.wrap(a, start, a.length - start), step, gamma, flip);
            } else if (out instanceof DataBufferFloat) {
                float[] a = ((DataBufferFloat)out).getData();
                flipCopyWithGamma(in.asFloatBuffer(), widthStep()/4, FloatBuffer.wrap(a, start, a.length - start), step, gamma, flip);
            } else if (out instanceof DataBufferInt) {
                int[] a = ((DataBufferInt)out).getData();
                if (depth() == IPL_DEPTH_8U || depth() == IPL_DEPTH_8S) {
                    in = in.order(ByteOrder.LITTLE_ENDIAN);
                }

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            } else if (in instanceof DataBufferDouble) {
                double[] a = ((DataBufferDouble)in).getData();
                flipCopyWithGamma(DoubleBuffer.wrap(a, start, a.length - start), step, out.asDoubleBuffer(), widthStep()/8, gamma, false);
            } else if (in instanceof DataBufferFloat) {
                float[] a = ((DataBufferFloat)in).getData();
                flipCopyWithGamma(FloatBuffer.wrap(a, start, a.length - start), step, out.asFloatBuffer(), widthStep()/4, gamma, false);
            } else if (in instanceof DataBufferInt) {
                int[] a = ((DataBufferInt)in).getData();
                if (depth() == IPL_DEPTH_8U || depth() == IPL_DEPTH_8S) {
                    out = out.order(ByteOrder.LITTLE_ENDIAN);
                }

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          ByteArrayInputStream bis = new ByteArrayInputStream(buf.array());
          return bis;
        } else if (type.getName().equals(CAS.TYPE_NAME_FLOAT_ARRAY)) {
          arrayStart = getArrayStartAddress(fs.getAddress());
          buf = ByteBuffer.allocate(arraySize * 4);
          FloatBuffer floatbuf = buf.asFloatBuffer();
          float[] floatArray = new float[arraySize];
          for (int i = arrayStart; i < arrayStart + arraySize; i++) {
            floatArray[i - arrayStart] = Float.intBitsToFloat(this.getHeap().heap[i]);
          }
          floatbuf.put(floatArray);

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  {
    final float[] retVal = new float[numDims];


    final ByteBuffer readOnlyBuffer = data.asReadOnlyBuffer();
    readOnlyBuffer.position(offset);
    readOnlyBuffer.asFloatBuffer().get(retVal);


    return retVal;
  }
}

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  @Override
  public byte[] getCacheKey()
  {
    ByteBuffer minCoordsBuffer = ByteBuffer.allocate(minCoords.length * Floats.BYTES);
    minCoordsBuffer.asFloatBuffer().put(minCoords);
    final byte[] minCoordsCacheKey = minCoordsBuffer.array();


    ByteBuffer maxCoordsBuffer = ByteBuffer.allocate(maxCoords.length * Floats.BYTES);
    maxCoordsBuffer.asFloatBuffer().put(maxCoords);
    final byte[] maxCoordsCacheKey = maxCoordsBuffer.array();

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    ByteBuffer minCoordsBuffer = ByteBuffer.allocate(minCoords.length * Floats.BYTES);
    minCoordsBuffer.asFloatBuffer().put(minCoords);
    final byte[] minCoordsCacheKey = minCoordsBuffer.array();


    ByteBuffer maxCoordsBuffer = ByteBuffer.allocate(maxCoords.length * Floats.BYTES);
    maxCoordsBuffer.asFloatBuffer().put(maxCoords);
    final byte[] maxCoordsCacheKey = maxCoordsBuffer.array();


    final ByteBuffer cacheKey = ByteBuffer.allocate(1 + minCoordsCacheKey.length + maxCoordsCacheKey.length)
                                          .put(minCoordsCacheKey)
                                          .put(maxCoordsCacheKey)

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        assertTrue(b.isDirect());
        assertView("duplicate", b, b.duplicate(), 1);
        assertView("char view", b, b.asCharBuffer(), 2);
        assertView("short view", b, b.asShortBuffer(), 2);
        assertView("int view", b, b.asIntBuffer(), 4);
        assertView("float view", b, b.asFloatBuffer(), 4);
        assertView("double view", b, b.asDoubleBuffer(), 8);
        assertView("long view", b, b.asLongBuffer(), 8);
    }
}

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    }
    public void testFloatBufferPut() {
        final float MAGIC = 1234.5678f;
        Memory m = new Memory(8);
        ByteBuffer buf = m.getByteBuffer(0, m.size()).order(ByteOrder.nativeOrder());
        FloatBuffer fb = buf.asFloatBuffer();
        fb.put(MAGIC).flip();
        assertEquals("Int not written to memory", MAGIC, m.getFloat(0), 0f);
    }
    public void testDoubleBufferPut() {
        final double MAGIC = 1234.5678;

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