ImgDataAdapter (JPEG2000 support for Java Advanced Imaging Image I/O Tools API 1.3.0 API)

java.lang.Object
- jj2000.j2k.image.ImgDataAdapter

All Implemented Interfaces:

ImgData

Direct Known Subclasses:

EntropyCoder, ForwardWT, ForwCompTransf, ImgDataConverter, InvCompTransf, PostCompRateAllocator, Quantizer, ROIScaler, Tiler
```
public abstract class ImgDataAdapter
extends Object
implements ImgData
```
This class provides a default implementation of the methods in the 'ImgData' interface. The default implementation is just to return the value of the source, where the source is another 'ImgData' object.
This abstract class can be used to facilitate the development of other classes that implement 'ImgData'. For example a YCbCr color transform can inherit from this class and all the trivial methods do not have to be re-implemented.

If the default implementation of a method provided in this class does not suit a particular implementation of the 'ImgData' interface, the method can be overridden to implement the proper behavior.

See Also:

ImgData

Field Summary

Fields
Modifier and Type Field and Description

protected ImgData imgdatasrc
The ImgData source

protected int tIdx
Index of the current tile

Fields
Modifier and Type	Field and Description
`protected ImgData`	`imgdatasrc` The ImgData source
`protected int`	`tIdx` Index of the current tile

Constructor Summary

Constructors
Modifier Constructor and Description

protected ImgDataAdapter(ImgData src)
Instantiates the ImgDataAdapter object specifying the ImgData source.

Constructors
Modifier	Constructor and Description
`protected`	`ImgDataAdapter(ImgData src)` Instantiates the ImgDataAdapter object specifying the ImgData source.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`getCompImgHeight(int c)` Returns the height in pixels of the specified component in the overall image.
`int`	`getCompImgWidth(int c)` Returns the width in pixels of the specified component in the overall image.
`int`	`getCompSubsX(int c)` Returns the component subsampling factor in the horizontal direction, for the specified component.
`int`	`getCompSubsY(int c)` Returns the component subsampling factor in the vertical direction, for the specified component.
`int`	`getCompULX(int c)` Returns the horizontal coordinate of the upper-left corner of the specified component in the current tile.
`int`	`getCompULY(int c)` Returns the vertical coordinate of the upper-left corner of the specified component in the current tile.
`int`	`getImgHeight()` Returns the overall height of the image in pixels.
`int`	`getImgULX()` Returns the horizontal coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.
`int`	`getImgULY()` Returns the vertical coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.
`int`	`getImgWidth()` Returns the overall width of the image in pixels.
`int`	`getNomRangeBits(int c)` Returns the number of bits, referred to as the "range bits", corresponding to the nominal range of the image data in the specified component.
`int`	`getNomTileHeight()` Returns the nominal tiles height
`int`	`getNomTileWidth()` Returns the nominal tiles width
`int`	`getNumComps()` Returns the number of components in the image.
`int`	`getNumTiles()` Returns the total number of tiles in the image.
`Point`	`getNumTiles(Point co)` Returns the number of tiles in the horizontal and vertical directions.
`Point`	`getTile(Point co)` Returns the indexes of the current tile.
`int`	`getTileCompHeight(int t, int c)` Returns the height in pixels of the specified tile-component.
`int`	`getTileCompWidth(int t, int c)` Returns the width in pixels of the specified tile-component tile.
`int`	`getTileHeight()` Returns the overall height of the current tile in pixels.
`int`	`getTileIdx()` Returns the index of the current tile, relative to a standard scan-line order.
`int`	`getTilePartULX()` Returns the horizontal tile partition offset in the reference grid
`int`	`getTilePartULY()` Returns the vertical tile offset in the reference grid
`int`	`getTileWidth()` Returns the overall width of the current tile in pixels.
`void`	`nextTile()` Advances to the next tile, in standard scan-line order (by rows then columns).
`void`	`setTile(int x, int y)` Changes the current tile, given the new indexes.

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

- Field Detail
  - tIdx
```
protected int tIdx
```
    Index of the current tile
  - imgdatasrc
```
protected ImgData imgdatasrc
```
    The ImgData source
- Constructor Detail
  - ImgDataAdapter
```
protected ImgDataAdapter(ImgData src)
```
    Instantiates the ImgDataAdapter object specifying the ImgData source.
    
    Parameters:
    
    src - From where to obtain all the ImgData values.
- Method Detail
  - getTileWidth
```
public int getTileWidth()
```
    Returns the overall width of the current tile in pixels. This is the tile's width without accounting for any component subsampling. This is also referred as the reference grid width in the current tile.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getTileWidth in interface ImgData
    
    Returns:
    
    The total current tile's width in pixels.
  - getTileHeight
```
public int getTileHeight()
```
    Returns the overall height of the current tile in pixels. This is the tile's height without accounting for any component subsampling. This is also referred as the reference grid height in the current tile.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getTileHeight in interface ImgData
    
    Returns:
    
    The total current tile's height in pixels.
  - getNomTileWidth
```
public int getNomTileWidth()
```
    Returns the nominal tiles width
    
    Specified by:
    
    getNomTileWidth in interface ImgData
  - getNomTileHeight
```
public int getNomTileHeight()
```
    Returns the nominal tiles height
    
    Specified by:
    
    getNomTileHeight in interface ImgData
  - getImgWidth
```
public int getImgWidth()
```
    Returns the overall width of the image in pixels. This is the image's width without accounting for any component subsampling or tiling.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getImgWidth in interface ImgData
    
    Returns:
    
    The total image's width in pixels.
  - getImgHeight
```
public int getImgHeight()
```
    Returns the overall height of the image in pixels. This is the image's height without accounting for any component subsampling or tiling.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getImgHeight in interface ImgData
    
    Returns:
    
    The total image's height in pixels.
  - getNumComps
```
public int getNumComps()
```
    Returns the number of components in the image.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getNumComps in interface ImgData
    
    Returns:
    
    The number of components in the image.
  - getCompSubsX
```
public int getCompSubsX(int c)
```
    Returns the component subsampling factor in the horizontal direction, for the specified component. This is, approximately, the ratio of dimensions between the reference grid and the component itself, see the 'ImgData' interface desription for details.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getCompSubsX in interface ImgData
    
    Parameters:
    
    c - The index of the component (between 0 and N-1)
    
    Returns:
    
    The horizontal subsampling factor of component 'c'
    
    See Also:
    
    ImgData
  - getCompSubsY
```
public int getCompSubsY(int c)
```
    Returns the component subsampling factor in the vertical direction, for the specified component. This is, approximately, the ratio of dimensions between the reference grid and the component itself, see the 'ImgData' interface desription for details.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getCompSubsY in interface ImgData
    
    Parameters:
    
    c - The index of the component (between 0 and N-1)
    
    Returns:
    
    The vertical subsampling factor of component 'c'
    
    See Also:
    
    ImgData
  - getTileCompWidth
```
public int getTileCompWidth(int t,
                            int c)
```
    Returns the width in pixels of the specified tile-component tile.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getTileCompWidth in interface ImgData
    
    Parameters:
    
    t - Tile index
    
    c - The index of the component, from 0 to N-1.
    
    Returns:
    
    The width in pixels of component c in tilet.
  - getTileCompHeight
```
public int getTileCompHeight(int t,
                             int c)
```
    Returns the height in pixels of the specified tile-component.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getTileCompHeight in interface ImgData
    
    Parameters:
    
    t - The tile index.
    
    c - The index of the component, from 0 to N-1.
    
    Returns:
    
    The height in pixels of component c in tile t.
  - getCompImgWidth
```
public int getCompImgWidth(int c)
```
    Returns the width in pixels of the specified component in the overall image.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getCompImgWidth in interface ImgData
    
    Parameters:
    
    c - The index of the component, from 0 to N-1.
    
    Returns:
    
    The width in pixels of component c in the overall image.
  - getCompImgHeight
```
public int getCompImgHeight(int c)
```
    Returns the height in pixels of the specified component in the overall image.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getCompImgHeight in interface ImgData
    
    Parameters:
    
    c - The index of the component, from 0 to N-1.
    
    Returns:
    
    The height in pixels of component c in the overall image.
  - getNomRangeBits
```
public int getNomRangeBits(int c)
```
    Returns the number of bits, referred to as the "range bits", corresponding to the nominal range of the image data in the specified component. If this number is n then for unsigned data the nominal range is between 0 and 2^b-1, and for signed data it is between -2^(b-1) and 2^(b-1)-1. In the case of transformed data which is not in the image domain (e.g., wavelet coefficients), this method returns the "range bits" of the image data that generated the coefficients.
    This default implementation returns the value of the source.
    
    Specified by:
    
    getNomRangeBits in interface ImgData
    
    Parameters:
    
    c - The index of the component.
    
    Returns:
    
    The number of bits corresponding to the nominal range of the image data (in the image domain).
  setTile
  
  public void setTile(int x, int y)
  
  Changes the current tile, given the new indexes. An IllegalArgumentException is thrown if the indexes do not correspond to a valid tile.
  This default implementation just changes the tile in the source.
  
  Specified by:
  
  setTile in interface ImgData
  
  Parameters:
  
  x - The horizontal index of the tile.
  
  y - The vertical index of the new tile.
  
  nextTile
  
  public void nextTile()
  
  Advances to the next tile, in standard scan-line order (by rows then columns). An NoNextElementException is thrown if the current tile is the last one (i.e. there is no next tile).
  This default implementation just advances to the next tile in the source.
  
  Specified by:
  
  nextTile in interface ImgData
  
  getTile
  
  public Point getTile(Point co)
  
  Returns the indexes of the current tile. These are the horizontal and vertical indexes of the current tile.
  This default implementation returns the value of the source.
  
  Specified by:
  
  getTile in interface ImgData
  
  Parameters:
  
  co - If not null this object is used to return the information. If null a new one is created and returned.
  
  Returns:
  
  The current tile's indexes (vertical and horizontal indexes).
  
  getTileIdx
  
  public int getTileIdx()
  
  Returns the index of the current tile, relative to a standard scan-line order.
  This default implementation returns the value of the source.
  
  Specified by:
  
  getTileIdx in interface ImgData
  
  Returns:
  
  The current tile's index (starts at 0).
  
  getCompULX
  
  public int getCompULX(int c)
  
  Returns the horizontal coordinate of the upper-left corner of the specified component in the current tile.
  This default implementation returns the value of the source.
  
  Specified by:
  
  getCompULX in interface ImgData
  
  Parameters:
  
  c - The component index.
  
  getCompULY
  
  public int getCompULY(int c)
  
  Returns the vertical coordinate of the upper-left corner of the specified component in the current tile.
  This default implementation returns the value of the source.
  
  Specified by:
  
  getCompULY in interface ImgData
  
  Parameters:
  
  c - The component index.
  
  getTilePartULX
  
  public int getTilePartULX()
  
  Returns the horizontal tile partition offset in the reference grid
  
  Specified by:
  
  getTilePartULX in interface ImgData
  
  getTilePartULY
  
  public int getTilePartULY()
  
  Returns the vertical tile offset in the reference grid
  
  Specified by:
  
  getTilePartULY in interface ImgData
  
  getImgULX
  
  public int getImgULX()
  
  Returns the horizontal coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.
  This default implementation returns the value of the source.
  
  Specified by:
  
  getImgULX in interface ImgData
  
  Returns:
  
  The horizontal coordinate of the image origin in the canvas system, on the reference grid.
  
  getImgULY
  
  public int getImgULY()
  
  Returns the vertical coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.
  This default implementation returns the value of the source.
  
  Specified by:
  
  getImgULY in interface ImgData
  
  Returns:
  
  The vertical coordinate of the image origin in the canvas system, on the reference grid.
  
  getNumTiles
  
  public Point getNumTiles(Point co)
  
  Returns the number of tiles in the horizontal and vertical directions.
  This default implementation returns the value of the source.
  
  Specified by:
  
  getNumTiles in interface ImgData
  
  Parameters:
  
  co - If not null this object is used to return the information. If null a new one is created and returned.
  
  Returns:
  
  The number of tiles in the horizontal (Point.x) and vertical (Point.y) directions.
  
  getNumTiles
  
  public int getNumTiles()
  
  Returns the total number of tiles in the image.
  This default implementation returns the value of the source.
  
  Specified by:
  
  getNumTiles in interface ImgData
  
  Returns:
  
  The total number of tiles in the image.

Class ImgDataAdapter

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

tIdx

imgdatasrc

Constructor Detail

ImgDataAdapter

Method Detail

getTileWidth

getTileHeight

getNomTileWidth

getNomTileHeight

getImgWidth

getImgHeight

getNumComps

getCompSubsX

getCompSubsY

getTileCompWidth

getTileCompHeight

getCompImgWidth

getCompImgHeight

getNomRangeBits

setTile

nextTile

getTile

getTileIdx

getCompULX

getCompULY

getTilePartULX

getTilePartULY

getImgULX

getImgULY

getNumTiles

getNumTiles