org.monte.media.avi
Class DIBCodec

java.lang.Object
  org.monte.media.AbstractCodec
      org.monte.media.AbstractVideoCodec
          org.monte.media.avi.DIBCodec

All Implemented Interfaces:

Codec

public class DIBCodec
extends AbstractVideoCodec

DIBCodec encodes a BufferedImage as a Microsoft Device Independent Bitmap (DIB) into a byte array.

The DIB codec only works with the AVI file format. Other file formats, such as QuickTime, use a different encoding for uncompressed video.

This codec currently only supports encoding from a BufferedImage into the file format. Decoding support may be added in the future.

This codec does not encode the color palette of an image. This must be done separately.

The pixels of a frame are written row by row from bottom to top and from the left to the right. 24-bit pixels are encoded as BGR.

Supported input formats:

Format with BufferedImage.class, any width, any height, depth=4.

Supported output formats:

Format with byte[].class, same width and height as input format, depth=4.

Version:

$Id: DIBCodec.java 186 2012-03-28 11:18:42Z werner $

Author:

Werner Randelshofer

Field Summary

Fields inherited from class org.monte.media.AbstractCodec

inputFormat, inputFormats, name, outputFormat, outputFormats

Fields inherited from interface org.monte.media.Codec

CODEC_FAILED, CODEC_INPUT_NOT_CONSUMED, CODEC_OK, CODEC_OUTPUT_NOT_FILLED

Constructor Summary

DIBCodec()

Method Summary

int	process(Buffer in, Buffer out) Performs the media processing defined by this codec.
void	writeKey24(java.io.OutputStream out, int[] pixels, int width, int height, int offset, int scanlineStride) Encodes a 24-bit key frame.
void	writeKey4(java.io.OutputStream out, byte[] pixels, int width, int height, int offset, int scanlineStride) Encodes a 4-bit key frame.
void	writeKey8(java.io.OutputStream out, byte[] pixels, int width, int height, int offset, int scanlineStride) Encodes an 8-bit key frame.

Methods inherited from class org.monte.media.AbstractVideoCodec

copyImage, getARGB32, getBufferedImage, getIndexed8, getRGB15, getRGB16, getRGB24, writeInt24, writeInt24LE, writeInts24, writeInts24LE

Methods inherited from class org.monte.media.AbstractCodec

getInputFormat, getInputFormats, getName, getOutputFormat, getOutputFormats, reset, setInputFormat, setOutputFormat, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DIBCodec

public DIBCodec()

Method Detail

process

public int process(Buffer in,
                   Buffer out)

Description copied from interface: Codec

Performs the media processing defined by this codec.

Copies the data from the input buffer into the output buffer.

Returns:

A combination of processing flags.

writeKey4

public void writeKey4(java.io.OutputStream out,
                      byte[] pixels,
                      int width,
                      int height,
                      int offset,
                      int scanlineStride)
               throws java.io.IOException

Encodes a 4-bit key frame.

Parameters:

out - The output stream.

pixels - The image data.

offset - The offset to the first pixel in the data array.

width - The width of the image in data elements.

scanlineStride - The number to append to offset to get to the next scanline.

Throws:

java.io.IOException

writeKey8

public void writeKey8(java.io.OutputStream out,
                      byte[] pixels,
                      int width,
                      int height,
                      int offset,
                      int scanlineStride)
               throws java.io.IOException

Encodes an 8-bit key frame.

Parameters:

out - The output stream.

pixels - The image data.

offset - The offset to the first pixel in the data array.

width - The width of the image in data elements.

scanlineStride - The number to append to offset to get to the next scanline.

Throws:

java.io.IOException

writeKey24

public void writeKey24(java.io.OutputStream out,
                       int[] pixels,
                       int width,
                       int height,
                       int offset,
                       int scanlineStride)
                throws java.io.IOException

Encodes a 24-bit key frame.

Parameters:

out - The output stream.

pixels - The image data.

offset - The offset to the first pixel in the data array.

width - The width of the image in data elements.

scanlineStride - The number to append to offset to get to the next scanline.

Throws:

java.io.IOException