Class InvWTAdapter
- java.lang.Object
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- jj2000.j2k.wavelet.synthesis.InvWTAdapter
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- All Implemented Interfaces:
ImgData
,InvWT
,WaveletTransform
- Direct Known Subclasses:
InverseWT
public abstract class InvWTAdapter extends Object implements InvWT
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.
- See Also:
InvWT
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Field Summary
Fields Modifier and Type Field Description protected DecoderSpecs
decSpec
The decoder specificationsprotected int
maxImgRes
The maximum available image resolution levelprotected MultiResImgData
mressrc
The 'MultiResImgData' sourceprotected int
reslvl
The resquested image resolution level for reconstruction.-
Fields inherited from interface jj2000.j2k.wavelet.WaveletTransform
WT_IMPL_FULL, WT_IMPL_LINE
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Constructor Summary
Constructors Modifier Constructor Description protected
InvWTAdapter(MultiResImgData src, DecoderSpecs decSpec)
Instantiates the 'InvWTAdapter' object using the specified 'MultiResImgData' source.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method 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
getNomTileHeight()
Returns the nominal height of tilesint
getNomTileWidth()
Returns the nominal width of tilesint
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.SubbandSyn
getSynSubbandTree(int t, int c)
Returns the specified synthesis subband treePoint
getTile(Point co)
Returns the indixes 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-componentint
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 gridint
getTilePartULY()
Returns the vertical tile partition offset in the reference gridint
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
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
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface jj2000.j2k.image.ImgData
getNomRangeBits
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Methods inherited from interface jj2000.j2k.wavelet.WaveletTransform
getImplementationType, isReversible
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Field Detail
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decSpec
protected DecoderSpecs decSpec
The decoder specifications
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mressrc
protected MultiResImgData mressrc
The 'MultiResImgData' source
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reslvl
protected int reslvl
The resquested image resolution level for reconstruction.
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maxImgRes
protected int maxImgRes
The maximum available image resolution level
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Constructor Detail
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InvWTAdapter
protected InvWTAdapter(MultiResImgData src, DecoderSpecs decSpec)
Instantiates the 'InvWTAdapter' object using the specified 'MultiResImgData' source. The reconstruction resolution level is set to full resolution (i.e. the maximum resolution level).- Parameters:
src
- From where to obtain the values to returndecSpec
- The decoder specifications
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Method Detail
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setImgResLevel
public void setImgResLevel(int rl)
Sets the image reconstruction resolution level. A value of 0 means reconstruction of an image with the lowest resolution (dimension) available.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.
- Specified by:
setImgResLevel
in interfaceInvWT
- Parameters:
rl
- The image resolution level.
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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 at the current reconstruction resolution level.
- Specified by:
getTileWidth
in interfaceImgData
- Returns:
- The total current tile's width in pixels.
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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 at the current reconstruction resolution level.
- Specified by:
getTileHeight
in interfaceImgData
- Returns:
- The total current tile's height in pixels.
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getNomTileWidth
public int getNomTileWidth()
Returns the nominal width of tiles- Specified by:
getNomTileWidth
in interfaceImgData
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getNomTileHeight
public int getNomTileHeight()
Returns the nominal height of tiles- Specified by:
getNomTileHeight
in interfaceImgData
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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.- Specified by:
getImgWidth
in interfaceImgData
- Returns:
- The total image's width in pixels.
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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.- Specified by:
getImgHeight
in interfaceImgData
- Returns:
- The total image's height in pixels.
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getNumComps
public int getNumComps()
Returns the number of components in the image.- Specified by:
getNumComps
in interfaceImgData
- Returns:
- The number of components in the image.
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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.- Specified by:
getCompSubsX
in interfaceImgData
- Parameters:
c
- The index of the component (between 0 and N-1).- Returns:
- The horizontal subsampling factor of component 'c'.
- See Also:
ImgData
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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.- Specified by:
getCompSubsY
in interfaceImgData
- Parameters:
c
- The index of the component (between 0 and N-1).- Returns:
- The vertical subsampling factor of component 'c'.
- See Also:
ImgData
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getTileCompWidth
public int getTileCompWidth(int t, int c)
Returns the width in pixels of the specified tile-component- Specified by:
getTileCompWidth
in interfaceImgData
- Parameters:
t
- Tile indexc
- The index of the component, from 0 to N-1.- Returns:
- The width in pixels of component n in tile t.
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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 at the current reconstruction resolution level.
- Specified by:
getTileCompHeight
in interfaceImgData
- Parameters:
t
- The tile index.c
- The index of the component, from 0 to N-1.- Returns:
- The height in pixels of component n in tile t.
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getCompImgWidth
public int getCompImgWidth(int c)
Returns the width in pixels of the specified component in the overall image.- Specified by:
getCompImgWidth
in interfaceImgData
- Parameters:
c
- The index of the component, from 0 to N-1.- Returns:
- The width in pixels of component c in the overall image.
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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 at the current reconstruction resolution level.
- Specified by:
getCompImgHeight
in interfaceImgData
- Parameters:
c
- The index of the component, from 0 to N-1.- Returns:
- The height in pixels of component n in the overall image.
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setTile
public void setTile(int x, int y)
Changes the current tile, given the new indices. An IllegalArgumentException is thrown if the coordinates do not correspond to a valid tile.This default implementation calls the same method on the source.
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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 calls the same method on the source.
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getTile
public Point getTile(Point co)
Returns the indixes of the current tile. These are the horizontal and vertical indexes of the current tile.This default implementation returns the value of the source.
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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 interfaceImgData
- Returns:
- The current tile's index (starts at 0).
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getCompULX
public int getCompULX(int c)
Returns the horizontal coordinate of the upper-left corner of the specified component in the current tile.- Specified by:
getCompULX
in interfaceImgData
- Parameters:
c
- The component index.
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getCompULY
public int getCompULY(int c)
Returns the vertical coordinate of the upper-left corner of the specified component in the current tile.- Specified by:
getCompULY
in interfaceImgData
- Parameters:
c
- The component index.
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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 at the current reconstruction resolution level.
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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 at the current reconstruction resolution level.
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getTilePartULX
public int getTilePartULX()
Returns the horizontal tile partition offset in the reference grid- Specified by:
getTilePartULX
in interfaceImgData
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getTilePartULY
public int getTilePartULY()
Returns the vertical tile partition offset in the reference grid- Specified by:
getTilePartULY
in interfaceImgData
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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 interfaceImgData
- 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.
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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 interfaceImgData
- Returns:
- The total number of tiles in the image.
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getSynSubbandTree
public SubbandSyn getSynSubbandTree(int t, int c)
Returns the specified synthesis subband tree- Parameters:
t
- Tile index.c
- Component index.
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