ImageLineInt (PNGJ 2.1.1-SNAPSHOT API)

java.lang.Object
- ar.com.hjg.pngj.ImageLineInt

All Implemented Interfaces:

IImageLine, IImageLineArray
```
public class ImageLineInt
extends Object
implements IImageLine, IImageLineArray
```
Represents an image line, integer format (one integer by sample). See scanline to understand the format.

Field Summary

Fields
Modifier and Type	Field and Description
`protected FilterType`	`filterType` informational ; only filled by the reader.
`ImageInfo`	`imgInfo`
`protected int[]`	`scanline` The 'scanline' is an array of integers, corresponds to an image line (row).
`protected int`	`size` number of elements in the scanline

Constructor Summary

Constructors
Constructor and Description

ImageLineInt(ImageInfo imgInfo)

ImageLineInt(ImageInfo imgInfo, int[] sci)

Constructors
Constructor and Description
`ImageLineInt(ImageInfo imgInfo)`
`ImageLineInt(ImageInfo imgInfo, int[] sci)`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`endReadFromPngRaw()` Does nothing in this implementation
`int`	`getElem(int i)` Get i-th element of array (for 0 to size-1).
`static IImageLineFactory<ImageLineInt>`	`getFactory()` Helper method, returns a default factory for this object
`FilterType`	`getFilterType()`
`ImageInfo`	`getImageInfo()`
`int[]`	`getScanline()`
`int`	`getSize()` length of array (should correspond to samples)
`void`	`readFromPngRaw(byte[] raw, int len, int offset, int step)` Extract pixels from a raw unlfilterd PNG row.
`void`	`setFilterType(FilterType ft)` This should rarely be used by client code.
`String`	`toString()` Basic info
`void`	`writeToPngRaw(byte[] raw)` Writes the line to a PNG raw byte array, in the unfiltered PNG format Notice that the first byte is the filter type, you should write it only if you know it.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - imgInfo
```
public final ImageInfo imgInfo
```
  - scanline
```
protected final int[] scanline
```
    The 'scanline' is an array of integers, corresponds to an image line (row).
    Each int is a "sample" (one for channel), (0-255 or 0-65535) in the corresponding PNG sequence: R G B R G B... or R G B A R G B A... or g g g ... or i i i (palette index)
    For bitdepth=1/2/4 the value is not scaled (hence, eg, if bitdepth=2 the range will be 0-4)
    To convert a indexed line to RGB values, see ImageLineHelper.palette2rgb(ImageLineInt, ar.com.hjg.pngj.chunks.PngChunkPLTE, int[]) (you can't do the reverse)
  size protected final int size number of elements in the scanline filterType protected FilterType filterType informational ; only filled by the reader. not meaningful for interlaced
Constructor Detail ImageLineInt public ImageLineInt(ImageInfo imgInfo) Parameters: imgInfo - Inmutable ImageInfo, basic parameters of the image we are reading or writing ImageLineInt public ImageLineInt(ImageInfo imgInfo, int[] sci) Parameters: imgInfo - Inmutable ImageInfo, basic parameters of the image we are reading or writing sci - prealocated buffer (can be null) Method Detail getFactory public static IImageLineFactory<ImageLineInt> getFactory() Helper method, returns a default factory for this object getFilterType public FilterType getFilterType() Specified by: getFilterType in interface IImageLineArray setFilterType public void setFilterType(FilterType ft) This should rarely be used by client code. Only relevant if FilterPreserve==true toString public String toString() Basic info Overrides: toString in class Object readFromPngRaw public void readFromPngRaw(byte[] raw, int len, int offset, int step) Description copied from interface: IImageLine Extract pixels from a raw unlfilterd PNG row. Len is the total amount of bytes in the array, including the first byte (filter type) Arguments offset and step (0 and 1 for non interlaced) are in PIXELS. It's guaranteed that when step==1 then offset=0 Notice that when step!=1 the data is partial, this method will be called several times Warning: the data in array 'raw' starts at position 0 and has 'len' consecutive bytes. 'offset' and 'step' refer to the pixels in destination Specified by: readFromPngRaw in interface IImageLine writeToPngRaw public void writeToPngRaw(byte[] raw) Description copied from interface: IImageLine Writes the line to a PNG raw byte array, in the unfiltered PNG format Notice that the first byte is the filter type, you should write it only if you know it. Specified by: writeToPngRaw in interface IImageLine endReadFromPngRaw public void endReadFromPngRaw() Does nothing in this implementation Specified by: endReadFromPngRaw in interface IImageLine getSize public int getSize() Description copied from interface: IImageLineArray length of array (should correspond to samples) Specified by: getSize in interface IImageLineArray See Also: size getElem public int getElem(int i) Description copied from interface: IImageLineArray Get i-th element of array (for 0 to size-1). The meaning of this is type dependent. For ImageLineInt and ImageLineByte is the sample value. Specified by: getElem in interface IImageLineArray getScanline public int[] getScanline() Returns: see scanline getImageInfo public ImageInfo getImageInfo() Specified by: getImageInfo in interface IImageLineArray

Class ImageLineInt

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

imgInfo

scanline

size

filterType

Constructor Detail

ImageLineInt

ImageLineInt

Method Detail

getFactory

getFilterType

setFilterType

toString

readFromPngRaw

writeToPngRaw

endReadFromPngRaw

getSize

getElem

getScanline

getImageInfo