com.mortennobel.imagescaling

Class ImageUtils

java.lang.Object

com.mortennobel.imagescaling.ImageUtils

public class ImageUtils
extends Object

Author:

Heinz Doerr, Morten Nobel-Joergensen

Constructor Summary

Constructors

Constructor and Description
ImageUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static int[]	bytes2int(byte[] in, int index1, int index2, int index3)
static int[]	bytes2int(byte[] in, int index1, int index2, int index3, int index4)
static BufferedImage	convert(BufferedImage src, int bufImgType)
static byte[]	copyJpegMetaData(byte[] source, byte[] dest) Copy jpeg meta data (exif) from source to dest and save it to out.
static void	copyJpegMetaData(InputStream source, InputStream dest, ImageOutputStream out) Copy jpeg meta data (exif) from source to dest and save it to out
static byte[]	getPixelsBGR(BufferedImage img, int y, int w, byte[] array, int[] temp) returns one row (height == 1) of byte packed image data in BGR or AGBR form
static String	imageTypeName(BufferedImage img)
static void	ints2bytes(int[] in, byte[] out, int index1, int index2, int index3)
static void	ints2bytes(int[] in, byte[] out, int index1, int index2, int index3, int index4)
static int	nrChannels(BufferedImage img)
static void	setBGRPixels(byte[] bgrPixels, BufferedImage img, int x, int y, int w, int h) converts and copies byte packed BGR or ABGR into the img buffer, the img type may vary (e.g.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageUtils

public ImageUtils()

Method Detail

imageTypeName

public static String imageTypeName(BufferedImage img)

nrChannels

public static int nrChannels(BufferedImage img)

getPixelsBGR

public static byte[] getPixelsBGR(BufferedImage img,
                  int y,
                  int w,
                  byte[] array,
                  int[] temp)

returns one row (height == 1) of byte packed image data in BGR or AGBR form

Parameters:

img -

y -

w -

array -

temp - must be either null or a array with length of w*h

Returns:

setBGRPixels

public static void setBGRPixels(byte[] bgrPixels,
                BufferedImage img,
                int x,
                int y,
                int w,
                int h)

converts and copies byte packed BGR or ABGR into the img buffer, the img type may vary (e.g. RGB or BGR, int or byte packed) but the number of components (w/o alpha, w alpha, gray) must match does not unmange the image for all (A)RGN and (A)BGR and gray imaged

ints2bytes

public static void ints2bytes(int[] in,
              byte[] out,
              int index1,
              int index2,
              int index3)

ints2bytes

public static void ints2bytes(int[] in,
              byte[] out,
              int index1,
              int index2,
              int index3,
              int index4)

bytes2int

public static int[] bytes2int(byte[] in,
              int index1,
              int index2,
              int index3)

bytes2int

public static int[] bytes2int(byte[] in,
              int index1,
              int index2,
              int index3,
              int index4)

convert

public static BufferedImage convert(BufferedImage src,
                    int bufImgType)

copyJpegMetaData

public static byte[] copyJpegMetaData(byte[] source,
                      byte[] dest)
                               throws IOException

Copy jpeg meta data (exif) from source to dest and save it to out.

Parameters:

source -

dest -

Returns:

result

Throws:

IOException

copyJpegMetaData

public static void copyJpegMetaData(InputStream source,
                    InputStream dest,
                    ImageOutputStream out)
                             throws IOException

Copy jpeg meta data (exif) from source to dest and save it to out

Parameters:

source -

dest -

out -

Throws:

IOException