Package gov.nih.mipav.model.file.rawjp2

Class ImgReaderRAWColorSlice

  • All Implemented Interfaces:
    jj2000.j2k.image.BlkImgDataSrc, jj2000.j2k.image.ImgData
    public class ImgReaderRAWColorSlice
extends ImgReaderRAWSlice

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      jj2000.j2k.image.DataBlk getInternCompData​(jj2000.j2k.image.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.
      boolean isOrigSigned​(int c)
      Returns true if the data read was originally signed in the specified component, false if not.
      void setSliceIndex​(int si, boolean useModImg)  
      void setSliceIndex​(int si, int ti, boolean useModImg)  

      • Methods inherited from class jj2000.j2k.image.input.ImgReader

        getCompImgHeight, getCompImgWidth, getCompSubsX, getCompSubsY, getCompULX, getCompULY, getImgHeight, getImgULX, getImgULY, getImgWidth, getNomTileHeight, getNomTileWidth, getNumComps, getNumTiles, getNumTiles, getTile, getTileCompHeight, getTileCompWidth, getTileHeight, getTileIdx, getTilePartULX, getTilePartULY, getTileWidth, nextTile, setTile

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Field Detail

      • cFactor

        private int cFactor

      • linebuf

        private int[] linebuf

      • sliceOffset

        private int sliceOffset

    • Constructor Detail

      • ImgReaderRAWColorSlice

        public ImgReaderRAWColorSlice​(java.io.File file,
                              int si)
                       throws java.io.IOException
        Throws:
        java.io.IOException

      • ImgReaderRAWColorSlice

        public ImgReaderRAWColorSlice​(java.lang.String fname,
                              int si)
                       throws java.io.IOException
        Throws:
        java.io.IOException

      • ImgReaderRAWColorSlice

        public ImgReaderRAWColorSlice​(java.io.RandomAccessFile in,
                              int si)
                       throws java.io.EOFException,
                              java.io.IOException
        Throws:
        java.io.EOFException
        java.io.IOException

      • ImgReaderRAWColorSlice

        public ImgReaderRAWColorSlice​(ModelImage image,
                              int si,
                              boolean savingAsEncJP2)

      • ImgReaderRAWColorSlice

        public ImgReaderRAWColorSlice​(ModelImage image,
                              int si,
                              int ti,
                              boolean savingAsEncJP2)

    • Method Detail

      • setSliceIndex

        public void setSliceIndex​(int si,
                          boolean useModImg)
                   throws java.io.IOException
        Overrides:
        setSliceIndex in class ImgReaderRAWSlice
        Throws:
        java.io.IOException

      • setSliceIndex

        public void setSliceIndex​(int si,
                          int ti,
                          boolean useModImg)
                   throws java.io.IOException
        Overrides:
        setSliceIndex in class ImgReaderRAWSlice
        Throws:
        java.io.IOException

      • getInternCompData

        public jj2000.j2k.image.DataBlk getInternCompData​(jj2000.j2k.image.DataBlk blk,
                                                  int c)
        Description copied from class: ImgReaderRAWSlice
        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.

        Specified by:
        getInternCompData in interface jj2000.j2k.image.BlkImgDataSrc
        Overrides:
        getInternCompData in class ImgReaderRAWSlice
        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 is valid.
        Returns:
        The requested DataBlk
        See Also:
        ImgReaderRAWSlice.getCompData(jj2000.j2k.image.DataBlk, int), JJ2KExceptionHandler

      • getNomRangeBits

        public int getNomRangeBits​(int c)
        Description copied from class: ImgReaderRAWSlice
        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 average of 0.

        Specified by:
        getNomRangeBits in interface jj2000.j2k.image.ImgData
        Overrides:
        getNomRangeBits in class ImgReaderRAWSlice
        Parameters:
        c - The index of the component.
        Returns:
        The number of bits corresponding to the nominal range of the data. Fro floating-point data this value is not applicable and the return value is undefined.

      • 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.
        Overrides:
        isOrigSigned in class ImgReaderRAWSlice
        Parameters:
        c - The index of the component, from 0 to N-1.
        Returns:
        always false, since PPM data is always unsigned.