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java.lang.Objectjp2codec.image.ImgDataAdapter
public abstract class ImgDataAdapter
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 reimplemented.
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 overriden to implement the proper behaviour.
ImgData
Field Summary | |
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protected ImgData |
imgdatasrc
The ImgData source |
protected int |
tIdx
Index of the current tile |
Constructor Summary | |
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protected |
ImgDataAdapter(ImgData src)
Instantiates the ImgDataAdapter object specifying the ImgData source. |
Method Summary | |
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int |
getCompHeight(int n)
Returns the height in pixels of the specified component in the current tile. |
int |
getCompImgHeight(int n)
Returns the height in pixels of the specified component in the overall image. |
int |
getCompImgWidth(int n)
Returns the width in pixels of the specified component in the overall image. |
int |
getCompSubsX(int n)
Returns the component subsampling factor in the horizontal direction, for the specified component. |
int |
getCompSubsY(int n)
Returns the component subsampling factor in the vertical direction, for the specified component. |
int |
getCompWidth(int n)
Returns the width in pixels of the specified component in the current tile. |
int |
getHeight()
Returns the overall height of the current tile in pixels. |
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 n)
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 |
getNumComps()
Returns the number of components in the image. |
int |
getNumTiles()
Returns the total number of tiles in the image. |
Coord |
getNumTiles(Coord co)
Returns the number of tiles in the horizontal and vertical directions. |
Coord |
getTile(Coord co)
Returns the indexes of the current tile. |
int |
getTileIdx()
Returns the index of the current tile, relative to a standard scan-line order. |
Coord |
getTileOff(Coord co,
int n)
Returns the horizontal and vertical offset of the upper-left corner of the current tile, in the specified component, relative to the canvas origin, in the component coordinates (not in the reference grid coordinates). |
int |
getULX(int n)
Returns the horizontal coordinate of the upper-left corner of the active tile, with respect to the canvas origin, in the component coordinates, for the specified component. |
int |
getULY(int n)
Returns the vertical coordinate of the upper-left corner of the active tile, with respect to the canvas origin, in the component coordinates, for the specified component. |
int |
getWidth()
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 |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected int tIdx
protected ImgData imgdatasrc
Constructor Detail |
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protected ImgDataAdapter(ImgData src)
src
- From where to obtain all the ImgData values.Method Detail |
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public int getWidth()
This default implementation returns the value of the source.
getWidth
in interface ImgData
public int getHeight()
This default implementation returns the value of the source.
getHeight
in interface ImgData
public int getImgWidth()
This default implementation returns the value of the source.
getImgWidth
in interface ImgData
public int getImgHeight()
This default implementation returns the value of the source.
getImgHeight
in interface ImgData
public int getNumComps()
This default implementation returns the value of the source.
getNumComps
in interface ImgData
public int getCompSubsX(int n)
This default implementation returns the value of the source.
getCompSubsX
in interface ImgData
n
- The index of the component (between 0 and N-1)
ImgData
public int getCompSubsY(int n)
This default implementation returns the value of the source.
getCompSubsY
in interface ImgData
n
- The index of the component (between 0 and N-1)
ImgData
public int getCompWidth(int n)
This default implementation returns the value of the source.
getCompWidth
in interface ImgData
n
- The index of the component, from 0 to N-1.
public int getCompHeight(int n)
This default implementation returns the value of the source.
getCompHeight
in interface ImgData
n
- The index of the component, from 0 to N-1.
public int getCompImgWidth(int n)
This default implementation returns the value of the source.
getCompImgWidth
in interface ImgData
n
- The index of the component, from 0 to N-1.
public int getCompImgHeight(int n)
This default implementation returns the value of the source.
getCompImgHeight
in interface ImgData
n
- The index of the component, from 0 to N-1.
public int getNomRangeBits(int n)
This default implementation returns the value of the source.
getNomRangeBits
in interface ImgData
n
- The index of the component.
public void setTile(int x, int y)
This default implementation just changes the tile in the source.
setTile
in interface ImgData
x
- The horizontal index of the tile.y
- The vertical index of the new tile.public void nextTile()
This default implementation just advances to the next tile in the source.
nextTile
in interface ImgData
public Coord getTile(Coord co)
This default implementation returns the value of the source.
getTile
in interface ImgData
co
- If not null this object is used to return the
information. If null a new one is created and returned.
public int getTileIdx()
This default implementation returns the value of the source.
getTileIdx
in interface ImgData
public Coord getTileOff(Coord co, int n)
This default implementation returns the value of the source.
getTileOff
in interface ImgData
co
- If not null the object is used to return the values,
if null a new one is created and returned.n
- The index of the component (between 0 and N-1)
public int getULX(int n)
This default implementation returns the value of the source.
getULX
in interface ImgData
n
- The index of the component (between 0 and N-1)
public int getULY(int n)
This default implementation returns the value of the source.
getULY
in interface ImgData
n
- The index of the component (between 0 and N-1)
public int getImgULX()
This default implementation returns the value of the source.
getImgULX
in interface ImgData
public int getImgULY()
This default implementation returns the value of the source.
getImgULY
in interface ImgData
public Coord getNumTiles(Coord co)
This default implementation returns the value of the source.
getNumTiles
in interface ImgData
co
- If not null this object is used to return the
information. If null a new one is created and returned.
public int getNumTiles()
This default implementation returns the value of the source.
getNumTiles
in interface ImgData
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