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

java.lang.Object
- com.github.jaiimageio.jpeg2000.impl.RenderedImageSrc

All Implemented Interfaces:: BlkImgDataSrc, ImgData

public class RenderedImageSrc
extends Object
implements BlkImgDataSrc

Constructor Summary

Constructors
Constructor and Description
`RenderedImageSrc(Raster raster, J2KImageWriteParamJava param, J2KImageWriter writer)` Creates `RenderedImageSrc` for encoding a `Raster`.
`RenderedImageSrc(RenderedImage src, J2KImageWriteParamJava param, J2KImageWriter writer)` Creates `RenderedImageSrc` for encoding a `RenderedImage`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`DataBlk`	`getCompData(DataBlk blk, int c)` Returns, in the blk argument, a block of image data containing the specifed rectangular area, in the specified component.
`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`	`getCompULX(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`	`getCompULY(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`	`getCompWidth(int n)` Returns the width in pixels of the specified component in the current tile.
`int`	`getFixedPoint(int c)` Returns the position of the fixed point in the specified component (i.e.
`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.
`DataBlk`	`getInternCompData(DataBlk blk, int c)` Returns, in the blk argument, the block of image data containing the specifed rectangular area, in the specified component.
`int`	`getNomRangeBits(int c)` Returns the number of bits corresponding to the nominal range of the 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 coordinates 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
`int`	`getTileGridXOffset()`
`int`	`getTileGridYOffset()`
`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.
`Point`	`getTileOff(Point p, 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`	`getTilePartULX()` Returns the horizontal tile partition offset in the reference grid
`int`	`getTilePartULY()` Returns the vertical tile partition offset in the reference grid
`int`	`getTileWidth()` Returns the width of the current tile in pixels.
`boolean`	`isOrigSigned(int c)` Returns true if the data read was originally signed in the specified component, false if not.
`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 coordinates.

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

- Constructor Detail
  - RenderedImageSrc
```
public RenderedImageSrc(Raster raster,
                        J2KImageWriteParamJava param,
                        J2KImageWriter writer)
```
    Creates RenderedImageSrc for encoding a Raster.
    
    Parameters:
    
    raster - The Raster to be encoded.
    
    param - The J2KImageWriteParamJava used in encoding.
    
    writer - The J2KImageWriter performs the encoding.
    
    IOException - If an error occurs while opening the file.
  - RenderedImageSrc
```
public RenderedImageSrc(RenderedImage src,
                        J2KImageWriteParamJava param,
                        J2KImageWriter writer)
```
    Creates RenderedImageSrc for encoding a RenderedImage.
    
    Parameters:
    
    src - The RenderedImage to be encoded.
    
    param - The J2KImageWriteParamJava used in encoding.
    
    writer - The J2KImageWriter performs the encoding.
    
    IOException - If an error occurs while opening the file.
- Method Detail
  - getTilePartULX
```
public int getTilePartULX()
```
    Description copied from interface: ImgData
    
    Returns the horizontal tile partition offset in the reference grid
    
    Specified by:
    
    getTilePartULX in interface ImgData
  - getTilePartULY
```
public int getTilePartULY()
```
    Description copied from interface: ImgData
    
    Returns the vertical tile partition offset in the reference grid
    
    Specified by:
    
    getTilePartULY in interface ImgData
  - getTileWidth
```
public int getTileWidth()
```
    Returns the width of the current tile in pixels.
    
    Specified by:
    
    getTileWidth in interface ImgData
    
    Returns:
    
    The total image width in pixels.
  - getTileHeight
```
public int getTileHeight()
```
    Returns the overall height of the current tile in pixels.
    
    Specified by:
    
    getTileHeight in interface ImgData
    
    Returns:
    
    The total image height in pixels.
  - getNomTileWidth
```
public int getNomTileWidth()
```
    Description copied from interface: ImgData
    
    Returns the nominal tiles width
    
    Specified by:
    
    getNomTileWidth in interface ImgData
  - getNomTileHeight
```
public int getNomTileHeight()
```
    Description copied from interface: ImgData
    
    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. The value of w is returned.
    
    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. The value of h is returned.
    
    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. The value of nc is returned.
    
    Specified by:
    
    getNumComps in interface ImgData
    
    Returns:
    
    The number of components in the image.
  - getTileGridXOffset
```
public int getTileGridXOffset()
```
  - getTileGridYOffset
```
public int getTileGridYOffset()
```
  - getTileCompHeight
```
public int getTileCompHeight(int t,
                             int c)
```
    Description copied from interface: ImgData
    
    Returns the height in pixels of the specified tile-component.
    
    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.
  - getTileCompWidth
```
public int getTileCompWidth(int t,
                            int c)
```
    Description copied from interface: ImgData
    
    Returns the width in pixels of the specified tile-component
    
    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.
  - 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 interface ImgData
    
    Parameters:
    
    c - The index of the component (between 0 and C-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.
    
    Specified by:
    
    getCompSubsY in interface ImgData
    
    Parameters:
    
    c - The index of the component (between 0 and C-1)
    
    Returns:
    
    The vertical subsampling factor of component 'c'
    
    See Also:
    
    ImgData
  - getCompWidth
```
public int getCompWidth(int n)
```
    Returns the width in pixels of the specified component in the current tile. This default implementation assumes no tiling and no component subsampling (i.e., all components, or components, have the same dimensions in pixels).
    
    Parameters:
    
    c - The index of the component, from 0 to C-1.
    
    Returns:
    
    The width in pixels of component n in the current tile.
  - getCompHeight
```
public int getCompHeight(int c)
```
    Returns the height in pixels of the specified component in the current tile. This default implementation assumes no tiling and no component subsampling (i.e., all components, or components, have the same dimensions in pixels).
    
    Parameters:
    
    c - The index of the component, from 0 to C-1.
    
    Returns:
    
    The height in pixels of component c in the current tile.
  - getCompImgWidth
```
public int getCompImgWidth(int c)
```
    Returns the width in pixels of the specified component in the overall image. This default implementation assumes no component, or component, subsampling (i.e. all components have the same dimensions in pixels).
    
    Specified by:
    
    getCompImgWidth in interface ImgData
    
    Parameters:
    
    c - The index of the component, from 0 to C-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 assumes no component, or component, subsampling (i.e. all components have the same dimensions in pixels).
    
    Specified by:
    
    getCompImgHeight in interface ImgData
    
    Parameters:
    
    c - The index of the component, from 0 to C-1.
    
    Returns:
    
    The height in pixels of component c in the overall image.
  - setTile
```
public void setTile(int x,
                    int y)
```
    Changes the current tile, given the new coordinates.
    
    Specified by:
    
    setTile in interface ImgData
    
    Parameters:
    
    x - The horizontal coordinate of the tile.
    
    y - The vertical coordinate of the new tile.
  - nextTile
```
public void nextTile()
```
    Advances to the next tile, in standard scan-line order (by rows then columns).
    
    Specified by:
    
    nextTile in interface ImgData
  - getTile
```
public Point getTile(Point co)
```
    Returns the coordinates of the current tile. This default implementation assumes no-tiling, so (0,0) is returned.
    
    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 coordinates.
  - getTileIdx
```
public int getTileIdx()
```
    Returns the index of the current tile, relative to a standard scan-line order.
    
    Specified by:
    
    getTileIdx in interface ImgData
    
    Returns:
    
    The current tile's index (starts at 0).
  - getTileOff
```
public Point getTileOff(Point p,
                        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). These are the coordinates of the current tile's (not active tile) upper-left corner relative to the canvas.
    
    Parameters:
    
    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 C-1)
    
    Returns:
    
    The horizontal and vertical offsets of the upper-left corner of the current tile, for the specified component, relative to the canvas origin, in the component coordinates.
  - getCompULX
```
public int getCompULX(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.
    
    Specified by:
    
    getCompULX in interface ImgData
    
    Parameters:
    
    c - The index of the component (between 0 and C-1)
    
    Returns:
    
    The horizontal coordinate of the upper-left corner of the active tile, with respect to the canvas origin, for component 'c', in the component coordinates.
  - getCompULY
```
public int getCompULY(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.
    
    Specified by:
    
    getCompULY in interface ImgData
    
    Parameters:
    
    c - The index of the component (between 0 and C-1)
    
    Returns:
    
    The vertical coordinate of the upper-left corner of the active tile, with respect to the canvas origin, for component 'c', in the component coordinates.
  - getImgULX
```
public int getImgULX()
```
    Returns the horizontal coordinate of the image origin, the top-left corner, in the canvas system, on the reference grid.
    
    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.
    
    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.
    
    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 assumes no tiling, so 1 is always returned.
    
    Specified by:
    
    getNumTiles in interface ImgData
    
    Returns:
    
    The total number of tiles in the image.
  - getNomRangeBits
```
public int getNomRangeBits(int c)
```
    Returns the number of bits corresponding to the nominal range of the data in the specified component. This is the value rb (range bits) that was specified in the constructor, which normally is 8 for non bilevel data, and 1 for bilevel data.
    If this number is b then the nominal range is between -2^(b-1) and 2^(b-1)-1, since unsigned data is level shifted to have a nominal avergae of 0.
    
    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 data. For floating-point data this value is not applicable and the return value is undefined.
  getFixedPoint
  
  public int getFixedPoint(int c)
  
  Returns the position of the fixed point in the specified component (i.e. the number of fractional bits), which is always 0 for this ImgReader.
  
  Specified by:
  
  getFixedPoint in interface BlkImgDataSrc
  
  Parameters:
  
  c - The index of the component.
  
  Returns:
  
  The position of the fixed-point (i.e. the number of fractional bits). Always 0 for this ImgReader.
  
  getInternCompData
  
  public final DataBlk getInternCompData(DataBlk blk, int c)
  
  Returns, in the blk argument, the block of image data containing the specifed rectangular area, in the specified component. The data is returned, as a reference to the internal data, if any, instead of as a copy, therefore the returned data should not be modified.
  After being read the coefficients are level shifted by subtracting 2^(nominal bit range - 1)
  The rectangular area to return is specified by the 'ulx', 'uly', 'w' and 'h' members of the 'blk' argument, relative to the current tile. These members are not modified by this method. The 'offset' and 'scanw' of the returned data can be arbitrary. See the 'DataBlk' class.
  If the data array in blk is null, then a new one is created if necessary. The implementation of this interface may choose to return the same array or a new one, depending on what is more efficient. Therefore, the data array in blk prior to the method call should not be considered to contain the returned data, a new array may have been created. Instead, get the array from blk after the method has returned.
  The returned data always has its 'progressive' attribute unset (i.e. false).
  When an I/O exception is encountered the JJ2KExceptionHandler is used. The exception is passed to its handleException method. The action that is taken depends on the action that has been registered in JJ2KExceptionHandler. See JJ2KExceptionHandler for details.
  This method implements buffering for the 3 components: When the first one is asked, all the 3 components are read and stored until they are needed.
  
  Specified by:
  
  getInternCompData in interface BlkImgDataSrc
  
  Parameters:
  
  blk - Its coordinates and dimensions specify the area to return. Some fields in this object are modified to return the data.
  
  c - The index of the component from which to get the data. Only 0, 1 and 3 are valid.
  
  Returns:
  
  The requested DataBlk
  
  See Also:
  
  getCompData(jj2000.j2k.image.DataBlk, int), JJ2KExceptionHandler
  
  getCompData
  
  public final DataBlk getCompData(DataBlk blk, int c)
  
  Returns, in the blk argument, a block of image data containing the specifed rectangular area, in the specified component. The data is returned, as a copy of the internal data, therefore the returned data can be modified "in place".
  After being read the coefficients are level shifted by subtracting 2^(nominal bit range - 1)
  The rectangular area to return is specified by the 'ulx', 'uly', 'w' and 'h' members of the 'blk' argument, relative to the current tile. These members are not modified by this method. The 'offset' of the returned data is 0, and the 'scanw' is the same as the block's width. See the 'DataBlk' class.
  If the data array in 'blk' is 'null', then a new one is created. If the data array is not 'null' then it is reused, and it must be large enough to contain the block's data. Otherwise an 'ArrayStoreException' or an 'IndexOutOfBoundsException' is thrown by the Java system.
  The returned data has its 'progressive' attribute unset (i.e. false).
  When an I/O exception is encountered the JJ2KExceptionHandler is used. The exception is passed to its handleException method. The action that is taken depends on the action that has been registered in JJ2KExceptionHandler. See JJ2KExceptionHandler for details.
  
  Specified by:
  
  getCompData in interface BlkImgDataSrc
  
  Parameters:
  
  blk - Its coordinates and dimensions specify the area to return. If it contains a non-null data array, then it must have the correct dimensions. If it contains a null data array a new one is created. The fields in this object are modified to return the data.
  
  c - The index of the component from which to get the data. Only 0,1 and 2 are valid.
  
  Returns:
  
  The requested DataBlk
  
  See Also:
  
  getInternCompData(jj2000.j2k.image.DataBlk, int), JJ2KExceptionHandler
  
  isOrigSigned
  
  public boolean isOrigSigned(int c)
  
  Returns true if the data read was originally signed in the specified component, false if not. This method always returns false since PPM data is always unsigned.
  
  Parameters:
  
  c - The index of the component, from 0 to N-1.
  
  Returns:
  
  always false, since PPM data is always unsigned.

Class RenderedImageSrc

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RenderedImageSrc

RenderedImageSrc

Method Detail

getTilePartULX

getTilePartULY

getTileWidth

getTileHeight

getNomTileWidth

getNomTileHeight

getImgWidth

getImgHeight

getNumComps

getTileGridXOffset

getTileGridYOffset

getTileCompHeight

getTileCompWidth

getCompSubsX

getCompSubsY

getCompWidth

getCompHeight

getCompImgWidth

getCompImgHeight

setTile

nextTile

getTile

getTileIdx

getTileOff

getCompULX

getCompULY

getImgULX

getImgULY

getNumTiles

getNumTiles

getNomRangeBits

getFixedPoint

getInternCompData

getCompData

isOrigSigned