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java.lang.Object | +--jj2000.j2k.wavelet.synthesis.InvWTAdapter
This class provides default implementation of the methods in the 'InvWT' interface. The source is always a 'MultiResImgData', which is a multi-resolution image. The default implementation is just to return the value of the source at the current image resolution level, which is set by the 'setImgResLevel()' method.
This abstract class can be used to facilitate the development of other classes that implement the 'InvWT' interface, because most of the trivial methods are already implemented.
If the default implementation of a method provided in this class does not suit a particular implementation of the 'InvWT' interface, the method can be overriden to implement the proper behaviour.
If the 'setImgResLevel()' method is overriden then it is very important that the one of this class is called from the overriding method, so that the other methods in this class return the correct values.
InvWT
Field Summary | |
protected DecoderSpecs |
decSpec
The decoder specifications |
protected MultiResImgData |
mressrc
The 'MultiResImgData' source |
(package private) int |
reslvl
The wanted image resolution level |
Fields inherited from interface jj2000.j2k.wavelet.WaveletTransform |
WT_IMPL_FULL,
WT_IMPL_LINE |
Constructor Summary | |
protected |
InvWTAdapter(MultiResImgData src,
DecoderSpecs decSpec)
Instantiates the 'InvWTAdapter' object using the specified 'MultiResImgData' source. |
Method Summary | |
int |
getCompHeight(int c)
Returns the height in pixels of the specified component in the current tile. |
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 |
getCompWidth(int c)
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 |
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 indixes 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 c)
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 c)
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 c)
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 |
setImgResLevel(int rl)
Sets the image reconstruction resolution level. |
void |
setTile(int x,
int y)
Changes the current tile, given the new indices. |
Methods inherited from class java.lang.Object |
|
Field Detail |
protected DecoderSpecs decSpec
protected MultiResImgData mressrc
int reslvl
Constructor Detail |
protected InvWTAdapter(MultiResImgData src, DecoderSpecs decSpec)
src
- From where to obtain the values to returndecSpec
- The decoder specificationsMethod Detail |
public void setImgResLevel(int rl)
Note: Image resolution level indexes may differ from tile-component resolution index. They are indeed indexed starting from the lowest number of decomposition levels of each component of each tile.
Example: For an image (1 tile) with 2 components (component 0 having 2 decomposition levels and component 1 having 3 decomposition levels), the first (tile-) component has 3 resolution levels and the second one has 4 resolution levels, whereas the image has only 3 resolution levels available.
rl
- The image resolution level.public int getWidth()
This default implementation returns the value of the source at the current reconstruction resolution level.
public int getHeight()
This default implementation returns the value of the source at the current reconstruction resolution level.
public int getImgWidth()
This default implementation returns the value of the source at the current reconstruction resolution level.
public int getImgHeight()
This default implementation returns the value of the source at the current reconstruction resolution level.
public int getNumComps()
This default implementation returns the value of the source.
public int getCompSubsX(int c)
This default implementation returns the value of the source.
c
- The index of the component (between 0 and N-1)ImgData
public int getCompSubsY(int c)
This default implementation returns the value of the source.
c
- The index of the component (between 0 and N-1)ImgData
public int getCompWidth(int c)
This default implementation returns the value of the source at the current reconstruction resolution level.
c
- The index of the component, from 0 to N-1.public int getCompHeight(int c)
This default implementation returns the value of the source at the current reconstruction resolution level.
c
- The index of the component, from 0 to N-1.public int getCompImgWidth(int c)
This default implementation returns the value of the source at the current reconstruction resolution level.
c
- The index of the component, from 0 to N-1.public int getCompImgHeight(int c)
This default implementation returns the value of the source at the current reconstruction resolution level.
c
- The index of the component, from 0 to N-1.public void setTile(int x, int y)
This default implementation calls the same method on the source.
x
- The horizontal index of the tile.y
- The vertical index of the new tile.public void nextTile()
This default implementation calls the same method on the source.
public Coord getTile(Coord co)
This default implementation returns the value of the source.
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.
public Coord getTileOff(Coord co, int c)
This default implementation returns the value of the source at the current reconstruction resolution level.
co
- If not null the object is used to return the values,
if null a new one is created and returned.c
- The index of the component (between 0 and N-1)public int getULX(int c)
This default implementation returns the value of the source at the current reconstruction resolution level.
c
- The index of the component (between 0 and N-1)public int getULY(int c)
This default implementation returns the value of the source at the current reconstruction resolution level.
c
- The index of the component (between 0 and N-1)public int getImgULX()
This default implementation returns the value of the source at the current reconstruction resolution level.
public int getImgULY()
This default implementation returns the value of the source at the current reconstruction resolution level.
public Coord getNumTiles(Coord co)
This default implementation returns the value of the source.
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.
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