org.jagatoo.util.nio
Class BufferUtils

java.lang.Object
  org.jagatoo.util.nio.BufferUtils

public final class BufferUtils
extends java.lang.Object

Some often-used Buffer code for creating native buffers of the appropriate size.

Constructor Summary

BufferUtils()

Method Summary

static java.nio.ByteBuffer	createByteBuffer(byte... values) Constructs a direct native-ordered bytebuffer with the specified size.
static java.nio.ByteBuffer	createByteBuffer(int size) Constructs a direct native-ordered bytebuffer with the specified size.
static java.nio.CharBuffer	createCharBuffer(char... values) Constructs a direct native-order charbuffer with the specified number of elements.
static java.nio.CharBuffer	createCharBuffer(int size) Constructs a direct native-order charbuffer with the specified number of elements.
static java.nio.DoubleBuffer	createDoubleBuffer(double... values) Constructs a direct native-order doublebuffer with the specified number of elements.
static java.nio.DoubleBuffer	createDoubleBuffer(int size) Constructs a direct native-order doublebuffer with the specified number of elements.
static java.nio.FloatBuffer	createFloatBuffer(float... values) Constructs a direct native-order floatbuffer with the specified number of elements.
static java.nio.FloatBuffer	createFloatBuffer(int size) Constructs a direct native-order floatbuffer with the specified number of elements.
static java.nio.IntBuffer	createIntBuffer(int... values) Constructs a direct native-order intbuffer with the specified number of elements.
static java.nio.IntBuffer	createIntBuffer(int size) Constructs a direct native-order intbuffer with the specified number of elements.
static java.nio.LongBuffer	createLongBuffer(int size) Constructs a direct native-order longbuffer with the specified number of elements.
static java.nio.LongBuffer	createLongBuffer(long... values) Constructs a direct native-order longbuffer with the specified number of elements.
static java.nio.ShortBuffer	createShortBuffer(int size) Constructs a direct native-order shortbuffer with the specified number of elements.
static java.nio.ShortBuffer	createShortBuffer(short... values) Constructs a direct native-order shortbuffer with the specified number of elements.
static int	getElementSizeExponent(java.nio.Buffer buf)
static int	getOffset(java.nio.Buffer buffer) A helper function, which is used to get the byte offset in an arbitrary buffer based on its position
static boolean	getUseDirectBuffers() Gets whether to generally create direct buffers, if true, non-direct buffers otherwise.
static void	setUseDirectBuffers(boolean b) Sets whether to generally create direct buffers, if true, non-direct buffers otherwise.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BufferUtils

public BufferUtils()

Method Detail

setUseDirectBuffers

public static void setUseDirectBuffers(boolean b)

Sets whether to generally create direct buffers, if true, non-direct buffers otherwise.

Parameters:

b -

getUseDirectBuffers

public static final boolean getUseDirectBuffers()

Gets whether to generally create direct buffers, if true, non-direct buffers otherwise.

Returns:

whether to generally create direct buffers, if true, non-direct buffers otherwise.

createByteBuffer

public static java.nio.ByteBuffer createByteBuffer(int size)

Constructs a direct native-ordered bytebuffer with the specified size.

Parameters:

size - The size, in bytes

Returns:

a ByteBuffer

createByteBuffer

public static java.nio.ByteBuffer createByteBuffer(byte... values)

Constructs a direct native-ordered bytebuffer with the specified size.

Parameters:

values - the values

Returns:

a ByteBuffer

createShortBuffer

public static java.nio.ShortBuffer createShortBuffer(int size)

Constructs a direct native-order shortbuffer with the specified number of elements.

Parameters:

size - The size, in shorts

Returns:

a ShortBuffer

createShortBuffer

public static java.nio.ShortBuffer createShortBuffer(short... values)

Constructs a direct native-order shortbuffer with the specified number of elements.

Parameters:

values - the values

Returns:

a ShortBuffer

createCharBuffer

public static java.nio.CharBuffer createCharBuffer(int size)

Constructs a direct native-order charbuffer with the specified number of elements.

Parameters:

size - The size, in chars

Returns:

a CharBuffer

createCharBuffer

public static java.nio.CharBuffer createCharBuffer(char... values)

Constructs a direct native-order charbuffer with the specified number of elements.

Parameters:

values - the values

Returns:

a CharBuffer

createIntBuffer

public static java.nio.IntBuffer createIntBuffer(int size)

Constructs a direct native-order intbuffer with the specified number of elements.

Parameters:

size - The size, in ints

Returns:

an IntBuffer

createIntBuffer

public static java.nio.IntBuffer createIntBuffer(int... values)

Constructs a direct native-order intbuffer with the specified number of elements.

Parameters:

values - the values

Returns:

an IntBuffer

createLongBuffer

public static java.nio.LongBuffer createLongBuffer(int size)

Constructs a direct native-order longbuffer with the specified number of elements.

Parameters:

size - The size, in longs

Returns:

a LongBuffer

createLongBuffer

public static java.nio.LongBuffer createLongBuffer(long... values)

Constructs a direct native-order longbuffer with the specified number of elements.

Parameters:

values - the values

Returns:

a LongBuffer

createFloatBuffer

public static java.nio.FloatBuffer createFloatBuffer(int size)

Constructs a direct native-order floatbuffer with the specified number of elements.

Parameters:

size - The size, in floats

Returns:

a FloatBuffer

createFloatBuffer

public static java.nio.FloatBuffer createFloatBuffer(float... values)

Constructs a direct native-order floatbuffer with the specified number of elements.

Parameters:

values - the values

Returns:

a FloatBuffer

createDoubleBuffer

public static java.nio.DoubleBuffer createDoubleBuffer(int size)

Constructs a direct native-order doublebuffer with the specified number of elements.

Parameters:

size - The size, in floats

Returns:

a FloatBuffer

createDoubleBuffer

public static java.nio.DoubleBuffer createDoubleBuffer(double... values)

Constructs a direct native-order doublebuffer with the specified number of elements.

Parameters:

values - the values

Returns:

a FloatBuffer

getElementSizeExponent

public static int getElementSizeExponent(java.nio.Buffer buf)

Returns:

n, where buffer_element_size=2^n.

getOffset

public static int getOffset(java.nio.Buffer buffer)

A helper function, which is used to get the byte offset in an arbitrary buffer based on its position

Returns:

the position of the buffer, in BYTES