PixelsWriterMultiple (PNGJ 2.1.0 API)

java.lang.Object
- ar.com.hjg.pngj.pixels.PixelsWriter
- - ar.com.hjg.pngj.pixels.PixelsWriterMultiple

```
public class PixelsWriterMultiple
extends PixelsWriter
```
Special pixels writer for experimental super adaptive strategy

Field Summary

Fields
Modifier and Type	Field and Description
`protected int`	`bandNum`
`protected CompressorStream[]`	`filterBank` bank of compressor estimators, one for each filter and (perhaps) an adaptive strategy
`protected byte[][]`	`filteredRows` stored filtered rows, one for each filter (0=none is not allocated but linked)
`protected byte[]`	`filteredRowTmp`
`protected FiltersPerformance`	`filtersPerf`
`protected int`	`firstRowInThisBand`
`protected static int`	`HINT_MEMORY_DEFAULT_KB`
`protected int`	`hintMemoryKb`
`protected int`	`lastRowInThisBand`
`protected int`	`rowInBand`
`protected LinkedList<byte[]>`	`rows` unfiltered rowsperband elements, 0 is the current (rowb).
`protected int`	`rowsPerBand`
`protected int`	`rowsPerBandCurrent`

Fields inherited from class ar.com.hjg.pngj.pixels.PixelsWriter
buflen, bytesPixel, bytesRow, currentRow, deflaterCompLevel, deflaterStrategy, filterType, imgInfo, initdone

Constructor Summary

Constructors
Constructor and Description

PixelsWriterMultiple(ImageInfo imgInfo)

Constructors
Constructor and Description
`PixelsWriterMultiple(ImageInfo imgInfo)`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`close()` cleanup.
`protected void`	`filterAndWrite(byte[] rowb)` This does the filtering and send to stream.
`FiltersPerformance`	`getFiltersPerf()` for tuning memory or other parameters
`byte[]`	`getRowb()` This will be called by the PngWrite to fill the raw pixels for each row.
`protected void`	`initParams()` called by init(); override (calling this first) to do additional initialization
`void`	`setHintMemoryKb(int hintMemoryKb)`
`void`	`setHintRowsPerBand(int hintRowsPerBand)`
`void`	`setUseLz4(boolean lz4)`

Methods inherited from class ar.com.hjg.pngj.pixels.PixelsWriter
filterRowWithFilterType, getCompression, getDefaultFilter, getDeflaterCompLevel, getFiltersUsed, getFilterType, getOs, getTotalBytesToWrite, init, processRow, sendToCompressedStream, setCompressorStream, setDeflaterCompLevel, setDeflaterStrategy, setFilterType, setOs

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

- Field Detail
  - rows
```
protected LinkedList<byte[]> rows
```
    unfiltered rowsperband elements, 0 is the current (rowb). This should include all rows of current band, plus one
  - filterBank
```
protected CompressorStream[] filterBank
```
    bank of compressor estimators, one for each filter and (perhaps) an adaptive strategy
  - filteredRows
```
protected byte[][] filteredRows
```
    stored filtered rows, one for each filter (0=none is not allocated but linked)
  - filteredRowTmp
```
protected byte[] filteredRowTmp
```
  - filtersPerf
```
protected FiltersPerformance filtersPerf
```
  - rowsPerBand
```
protected int rowsPerBand
```
  - rowsPerBandCurrent
```
protected int rowsPerBandCurrent
```
  - rowInBand
```
protected int rowInBand
```
  - bandNum
```
protected int bandNum
```
  - firstRowInThisBand
```
protected int firstRowInThisBand
```
  - lastRowInThisBand
```
protected int lastRowInThisBand
```
  - HINT_MEMORY_DEFAULT_KB
```
protected static final int HINT_MEMORY_DEFAULT_KB
```
    See Also:
    Constant Field Values
  - hintMemoryKb
```
protected int hintMemoryKb
```
- Constructor Detail
  - PixelsWriterMultiple
```
public PixelsWriterMultiple(ImageInfo imgInfo)
```
- Method Detail
  - filterAndWrite
```
protected void filterAndWrite(byte[] rowb)
```
    Description copied from class: PixelsWriter
    
    This does the filtering and send to stream. Typically should decide the filtering, call PixelsWriter.filterRowWithFilterType(FilterType, byte[], byte[], byte[]) and and PixelsWriter.sendToCompressedStream(byte[])
    
    Specified by:
    
    filterAndWrite in class PixelsWriter
  - getRowb
```
public byte[] getRowb()
```
    Description copied from class: PixelsWriter
    
    This will be called by the PngWrite to fill the raw pixels for each row. This can change from call to call. Warning: this can be called before the object is init, implementations should call init() to be sure
    
    Specified by:
    
    getRowb in class PixelsWriter
  - initParams
```
protected void initParams()
```
    Description copied from class: PixelsWriter
    
    called by init(); override (calling this first) to do additional initialization
    
    Overrides:
    
    initParams in class PixelsWriter
  - close
```
public void close()
```
    Description copied from class: PixelsWriter
    
    cleanup. This should be called explicitly. Idempotent and secure
    
    Overrides:
    
    close in class PixelsWriter
  - setHintMemoryKb
```
public void setHintMemoryKb(int hintMemoryKb)
```
  - setHintRowsPerBand
```
public void setHintRowsPerBand(int hintRowsPerBand)
```
  - setUseLz4
```
public void setUseLz4(boolean lz4)
```
  - getFiltersPerf
```
public FiltersPerformance getFiltersPerf()
```
    for tuning memory or other parameters

Class PixelsWriterMultiple

Field Summary

Fields inherited from class ar.com.hjg.pngj.pixels.PixelsWriter

Constructor Summary

Method Summary

Methods inherited from class ar.com.hjg.pngj.pixels.PixelsWriter

Methods inherited from class java.lang.Object

Field Detail

rows

filterBank

filteredRows

filteredRowTmp

filtersPerf

rowsPerBand

rowsPerBandCurrent

rowInBand

bandNum

firstRowInThisBand

lastRowInThisBand

HINT_MEMORY_DEFAULT_KB

hintMemoryKb

Constructor Detail

PixelsWriterMultiple

Method Detail

filterAndWrite

getRowb

initParams

close

setHintMemoryKb

setHintRowsPerBand

setUseLz4

getFiltersPerf