Examples of BitBuffer

com.slytechs.utils.memory.BitBuffer
s entire state of the buffer b.position(6); b.order(ByteOrder.BIG_ENDIAN); System.out .printf("Position=%d, order=%s\n", b.position(), b.order().toString()); @author Mark Bednarczyk @author Sly Technologies, Inc.
org.codehaus.preon.buffer.BitBuffer
The interface providing methods reading a given number of bits from the byte buffer and conveting them to the byte, short, int, long (all unsigned) and also to the boolean type values. It is possible to start reading from any location in the byte buffer by explicitly giving the bit position of the first bit to read. The API also supports reading values one by one by setting the position of the first bit to read to the internal bit pointer position. Both little and big endian reading formats are supported.
In case of byte base reading i.e. given bits fit completely all bits in bytes, the big endian and little endian implementations differ only in the reversed bytes order. Otherwise, the implementation is more complicated - in order to read the given bits, the buffering bytes containing these bits are stored in internal buffer. For the little endian implementation the offset to the closest given bit is calucated from the least significant bit in that internal buffer, but for the big endian from the most significant bit (e.g. for the byte: 11010011 and bit position = 1 and number of bits to read = 3, the given bits would be 101 for big endian and 001 for little endian, what gives the values 5 and 1 respectively. @author Wilfred Springer
org.tools.utils.BitBuffer
Circular (LIFO) bit buffer allowing reading and writing chunks up to 32 bits to and from the buffer at the same time. The buffer's length is not self-adjusting but the capacity can be changed during usage. However this will be costly because the buffer needs to be copied. Not thread safe! For usage in XML input/output the conversions to/from XML safe Strings are included. Comment: Bit operations on integers are also included in java.util.BitSet and java.lang.Integer but neither of them offers the abilities to store/read a couple of bits at the same time.

Examples of com.slytechs.utils.memory.BitBuffer

   * (non-Javadoc)
   * 
   * @see org.jnetstream.packet.Packet#getBuffer()
   */
  public BitBuffer getBuffer() throws IOException {
    final BitBuffer buffer = getRecordBitBuffer();
    buffer.position(buffer.position() + PcapPacketRecord.HEADER_LENGTH * 8);


    return buffer;
  }

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Examples of com.slytechs.utils.memory.BitBuffer

   * point at the packet data portion of the buffer referenced as a view.
   * 
   * @see com.slytechs.packet.AbstractPacket#getBuffer()
   */
  public BitBuffer getBuffer() throws IOException {
    final BitBuffer b = handle.getBitBuffer();


    if (bits != b) {
      b.position(b.position() + getRecordHeaderLength());
      bits = BitBuffer.wrap(b.toByteBuffer());
    }


    return bits;
  }

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Examples of com.slytechs.utils.memory.BitBuffer

  public BitBuffer getRecordBitBuffer() throws IOException {
    if (bits != null) {
      return bits;
    }


    final BitBuffer b = this.handle.getBitBuffer();
    this.offset = b.position();


    return b;
  }

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Examples of com.slytechs.utils.memory.BitBuffer

   * (non-Javadoc)
   * 
   * @see org.jnetstream.packet.Packet#getBuffer()
   */
  public BitBuffer getBuffer() throws IOException {
    final BitBuffer b = getRecordBitBuffer();
    b.position(b.position() + SnoopPacketRecord.HEADER_LENGTH * 8);


    return b;
  }

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Examples of com.slytechs.utils.memory.BitBuffer


    if (headers.isEmpty()) {
      return getBuffer();
    }


    BitBuffer b = getBuffer();


    Header last = headers.getHeader(headers.size() - 1);
    int p = b.position() + last.getOffset() + last.getLength();
    p = (p > b.limit() ? b.limit() : p);


    // Now position the buffer
    b.position(p);


    return b;
  }

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Examples of org.codehaus.preon.buffer.BitBuffer

        this.wrapped = wrapped;
    }


    public T decode(BitBuffer buffer, Resolver resolver, Builder builder)
            throws DecodingException {
        BitBuffer slice = buffer
                .slice(sizeExpr.eval(resolver));
        return wrapped.decode(slice, resolver, builder);
    }

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Examples of org.codehaus.preon.buffer.BitBuffer


        };
    }


    public void testSelectFrom() throws DecodingException {
        BitBuffer buffer = new DefaultBitBuffer(ByteBuffer.wrap(new byte[]{0, 1, (byte) 255,
                (byte) 255, (byte) 255, (byte) 255}));


        // We expect all Codecs to be constructed
        expect(codecFactory.create(null, Float.class, context)).andReturn(floatCodec);
        expect(

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Examples of org.codehaus.preon.buffer.BitBuffer


        codec.encode(original, new OutputStreamBitChannel(out), resolver);
        byte[] encoded = out.toByteArray();
        assertThat(encoded.length, is(size));


        BitBuffer buffer = new DefaultBitBuffer(ByteBuffer.wrap(encoded));
        String result = codec.decode(buffer, resolver, builder);
        assertThat(result, is(original));
    }

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Examples of org.codehaus.preon.buffer.BitBuffer

        assertNull(factory.create(metadata, Boolean.class, null));
        verify(metadata);
    }


    public void testDecoding() throws DecodingException {
        BitBuffer buffer = new DefaultBitBuffer(ByteBuffer.wrap(new byte[]{(byte) 0xF0}));
        expect(metadata.isAnnotationPresent(Bound.class)).andReturn(true);
        replay(metadata);
        Codec<Boolean> codec = factory.create(metadata, Boolean.class, null);
        assertTrue(codec.decode(buffer, null, null));
        assertTrue(codec.decode(buffer, null, null));

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Examples of org.codehaus.preon.buffer.BitBuffer

                ByteOrder.LittleEndian);


        // Replay
        EasyMock.replay(metadata, boundNumber);
        EnumCodec.Factory factory = new EnumCodec.Factory();
        BitBuffer buffer = new DefaultBitBuffer(ByteBuffer.wrap(new byte[]{0,
                1}));
        Codec<Direction> codec = factory
                .create(metadata, Direction.class, null);
        assertNotNull(codec);
        assertEquals(Direction.Left, codec.decode(buffer, null, null));

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