| java.lang.Object
 com.javelin.swinglets.GIFEncoder
| GIFEncoder | | public class GIFEncoder (Code) | | GIFEncoder is a class which takes an image and saves it to a stream
using the GIF file format (Graphics Interchange
Format). A GIFEncoder
is constructed with either an AWT Image (which must be fully
loaded) or a set of RGB arrays. The image can be written out with a
call to write.
Three caveats:
GIFEncoder is based upon gifsave.c, which was written and released
by:
Sverre H. Huseby
Bjoelsengt. 17
N-0468 Oslo
Norway
Phone: +47 2 230539
sverrehu@ifi.uio.no
version:
DWC 0.91 1997-09-28 derived from version 0.90 21 Apr 1996
author:
Adam Doppelt
author:
David W. Croft |
| Constructor Summary | |
| public | GIFEncoder(Image image)
Construct a GIFEncoder. | | public | GIFEncoder(byte r, byte g, byte b)
Construct a GIFEncoder. | | public | GIFEncoder(short width, short height, int[] values)
Parameters:
values - An array of 24-bit color values. |
| Method Summary | |
| void | toIndexedColor(byte r, byte g, byte b)
| | public static void | toRGB(short width, short height, int[] values, byte[][] r, byte[][] g, byte[][] b)
Loads the values of three 8-bit arrays (red, green, blue) of
arrays ([ width ] [ height ]) with the masked values from a
24-bit color array of length width * height.
Parameters:
values - An array of 24-bit color values. | | public synchronized void | write(OutputStream output)
Writes the image out to a stream in the GIF file format. |
| numColors_ | | int numColors_(Code) | | |
| pixels_colors_ | | byte pixels_colors_(Code) | | |
| sd_ | | ScreenDescriptor sd_(Code) | | |
| width_height_ | | short width_height_(Code) | | |
| GIFEncoder | | public GIFEncoder(Image image) throws AWTException(Code) | | Construct a GIFEncoder. The constructor will convert the image to
an indexed color array. This may take some time.
Parameters:
image - The image to encode. The image must becompletely loaded.
exception:
AWTException - Will be thrown if the pixel grab fails. Thiscan happen if Java runs out of memory. It may also indicate that the imagecontains more than 256 colors. |
| GIFEncoder | | public GIFEncoder(byte r, byte g, byte b) throws AWTException(Code) | | Construct a GIFEncoder. The constructor will convert the image to
an indexed color array. This may take some time.
Each array stores intensity values for the image. In other words,
r[x][y] refers to the red intensity of the pixel at column x, row
y.
Parameters:
r - An array containing the red intensity values.
Parameters:
g - An array containing the green intensity values.
Parameters:
b - An array containing the blue intensity values.
exception:
AWTException - Will be thrown if the image contains more than256 colors. |
| GIFEncoder | | public GIFEncoder(short width, short height, int[] values) throws AWTException(Code) | |
Parameters:
values - An array of 24-bit color values. The length of values[]must be width * height. There must be 256 colors or less.
author:
David W. Croft |
| toRGB | | public static void toRGB(short width, short height, int[] values, byte[][] r, byte[][] g, byte[][] b) throws AWTException(Code) | | Loads the values of three 8-bit arrays (red, green, blue) of
arrays ([ width ] [ height ]) with the masked values from a
24-bit color array of length width * height.
Parameters:
values - An array of 24-bit color values. The length of values[]must be width * height. There must be 256 colors or less.
author:
David W. Croft |
| write | | public synchronized void write(OutputStream output) throws IOException(Code) | | Writes the image out to a stream in the GIF file format. This will
be a single GIF87a image, non-interlaced, with no background color.
This may take some time.
Parameters:
output - The stream to output to. This should probably be abuffered stream.
exception:
IOException - Will be thrown if a write operation fails. |
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