Package org.apache.commons.imaging.formats.webp.chunks

Class WebPChunkVp8x

java.lang.Object

org.apache.commons.imaging.common.BinaryFileParser

org.apache.commons.imaging.formats.webp.chunks.WebPChunk

org.apache.commons.imaging.formats.webp.chunks.WebPChunkVp8x

public final class WebPChunkVp8x
extends WebPChunk

VP8X (descriptions of features used) chunk.

  0                   1                   2                   3
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                                                               |
 |                   WebP file header (12 bytes)                 |
 |                                                               |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                      ChunkHeader('VP8X')                      |
 |                                                               |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |Rsv|I|L|E|X|A|R|                   Reserved                    |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |          Canvas Width Minus One               |             ...
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 ...  Canvas Height Minus One    |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 

Since:

1.0-alpha4

See Also:

• Extended File Format

Field Summary

Fields inherited from class org.apache.commons.imaging.formats.webp.chunks.WebPChunk

bytes

Constructor Summary

Constructors

Constructor	Description
WebPChunkVp8x(int type, int size, byte[] bytes)	Create a VP8x chunk.

Method Summary

Modifier and Type	Method	Description
void	dump(PrintWriter pw, int offset)	Print the chunk to the given stream.
int	getCanvasHeight()
int	getCanvasWidth()
boolean	hasAlpha()
boolean	hasAnimation()
boolean	hasExif()
boolean	hasIcc()
boolean	hasXmp()

Methods inherited from class org.apache.commons.imaging.formats.webp.chunks.WebPChunk

getBytes, getChunkSize, getPayloadSize, getType, getTypeDescription

Methods inherited from class org.apache.commons.imaging.common.BinaryFileParser

debugNumber, debugNumber, getByteOrder, setByteOrder

Methods inherited from class java.lang.Object

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

Constructor Details

WebPChunkVp8x

public WebPChunkVp8x(int type,
 int size,
 byte[] bytes)
              throws ImagingException

Create a VP8x chunk.

Parameters:

type - VP8X chunk type

size - VP8X chunk size

bytes - VP8X chunk data

Throws:

ImagingException - if the chunk data and the size provided do not match, or if the other parameters provided are invalid.

Method Details

dump

public void dump(PrintWriter pw,
 int offset)
          throws ImagingException,
IOException

Description copied from class: WebPChunk

Print the chunk to the given stream.

Overrides:

dump in class WebPChunk

Parameters:

pw - a stream to write to.

offset - chunk offset.

Throws:

ImagingException - if the image is invalid.

IOException - if it fails to write to the given stream.

getCanvasHeight

public int getCanvasHeight()

Returns:

the canvas height.

getCanvasWidth

public int getCanvasWidth()

Returns:

the canvas width.

hasAlpha

public boolean hasAlpha()

Returns:

whether the chunk has alpha enabled.

hasAnimation

public boolean hasAnimation()

Returns:

if the chunk contains an animation.

hasExif

public boolean hasExif()

Returns:

whether the chunk has EXIF data.

hasIcc

public boolean hasIcc()

Returns:

whether the chunk has ICC enabled.

hasXmp

public boolean hasXmp()

Returns:

whether the chunk has XMP.