Package com.twelvemonkeys.imageio.color

Class YCbCrConverter

java.lang.Object

com.twelvemonkeys.imageio.color.YCbCrConverter

public final class YCbCrConverter
extends java.lang.Object

Fast YCbCr to RGB conversion.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	YCbCrConverter.ITU_R_601
private static class	YCbCrConverter.JPEG

Field Summary

Fields

Modifier and Type	Field	Description
private static int	CENTERJSAMPLE
private static int	MAXJSAMPLE
private static int	ONE_HALF
private static int	SCALEBITS	Define tables for YCC->RGB color space conversion.

Constructor Summary

Constructors

Constructor	Description
YCbCrConverter()

Method Summary

Modifier and Type	Method	Description
private static byte	clamp(int val)
static void	convertJPEGYCbCr2RGB(byte[] yCbCr, byte[] rgb, int offset)
static void	convertRec601YCbCr2RGB(byte[] yCbCr, byte[] rgb, int offset)
static void	convertYCbCr2RGB(byte[] yCbCr, byte[] rgb, double[] coefficients, double[] referenceBW, int offset)

Methods inherited from class java.lang.Object

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

Field Detail

SCALEBITS

private static final int SCALEBITS

Define tables for YCC->RGB color space conversion.

See Also:

Constant Field Values

MAXJSAMPLE

private static final int MAXJSAMPLE

See Also:

Constant Field Values

CENTERJSAMPLE

private static final int CENTERJSAMPLE

See Also:

Constant Field Values

ONE_HALF

private static final int ONE_HALF

See Also:

Constant Field Values

Constructor Detail

YCbCrConverter

public YCbCrConverter()

Method Detail

convertYCbCr2RGB

public static void convertYCbCr2RGB(byte[] yCbCr,
                                    byte[] rgb,
                                    double[] coefficients,
                                    double[] referenceBW,
                                    int offset)

convertJPEGYCbCr2RGB

public static void convertJPEGYCbCr2RGB(byte[] yCbCr,
                                        byte[] rgb,
                                        int offset)

convertRec601YCbCr2RGB

public static void convertRec601YCbCr2RGB(byte[] yCbCr,
                                          byte[] rgb,
                                          int offset)

clamp

private static byte clamp(int val)