com.klg.jclass.util.swing.encode
Class GIFEncoder

java.lang.Object
  |
  +--com.klg.jclass.util.swing.encode.AbstractImageEncoder
        |
        +--com.klg.jclass.util.swing.encode.GIFEncoder

All Implemented Interfaces:

Encoder

public class GIFEncoder

extends AbstractImageEncoder

This class encodes a Gif file from an Image to an OutputStream. It converts the palette from 16 bits to 8 bits if necessary. Sometimes the palette conversion results in slightly changed colors. No color depths except 8 and 16 bpp are supported.

Constructor Summary

GIFEncoder()

Method Summary

ColorModel	palettizePixels(int[] inPixelArray, byte[] outPixelArray, ColorModel cmodel) Compress all colors in provided pixel array into a palette of 256 colors resulting in a converted byte pixel array.
void	saveImage(Image img, OutputStream ofile) Save image as a gif file.
void	writeChar(OutputStream ofile, char ochar)

Methods inherited from class com.klg.jclass.util.swing.encode.AbstractImageEncoder

byteFromChar, byteFromInt, bytesFromInt, bytesFromLong, compressColor, compressColor, createByte, encode, encode, error, snapshot, snapshotJava3d

Methods inherited from class java.lang.Object

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

Constructor Detail

GIFEncoder

public GIFEncoder()

Method Detail

saveImage

public void saveImage(Image img,
                      OutputStream ofile)
               throws IOException,
                      EncoderException

Save image as a gif file.

Specified by:

saveImage in class AbstractImageEncoder

IOException

EncoderException

palettizePixels

public ColorModel palettizePixels(int[] inPixelArray,
                                  byte[] outPixelArray,
                                  ColorModel cmodel)

Compress all colors in provided pixel array into a palette of 256 colors resulting in a converted byte pixel array. Conversion is done using the compressColors().

Parameters:

inPixelArray - input array of integer pixels

outPixelArray - output array of byte pixels

cmodel - current color model

Returns:

an instance of ColorModel that represents the newly created palette of 256 colors.

writeChar

public void writeChar(OutputStream ofile,
                      char ochar)
               throws IOException

IOException