Examples of ucar.jpeg.jj2000.j2k.quantization.quantizer.CBlkQuantDataSrcEnc

Package ucar.jpeg.jj2000.j2k.quantization.quantizer

Examples of ucar.jpeg.jj2000.j2k.quantization.quantizer.CBlkQuantDataSrcEnc

ucar.jpeg.jj2000.j2k.image.DataBlkInt
This interface defines a source of quantized wavelet coefficients and methods to transfer them in a code-block by code-block basis. In each call to 'getNextCodeBlock()' or 'getNextInternCodeBlock()' a new code-block is returned. The code-blocks are returned in no specific order.
This class is the source of data for the entropy coder. See the 'EntropyCoder' class.

Code-block data is returned in sign-magnitude representation, instead of the normal two's complement one. Only integral types are used. The sign magnitude representation is more adequate for entropy coding. In sign magnitude representation, the most significant bit is used for the sign (0 if positive, 1 if negative) and the magnitude of the coefficient is stored in the next M most significant bits. The rest of the bits (least significant bits) can contain a fractional value of the quantized coefficient. The number 'M' of magnitude bits is communicated in the 'magbits' member variable of the 'CBlkWTData'.

Note that no more of one object may request data, otherwise one object would get some of the data and another one another part, in no defined manner.
@see ForwWTDataProps @see CBlkWTDataSrc @see Quantizer @see EntropyCoder

    int E = drs.getBinaryScaleFactor();
    //System.out.println( "DS E=" + E );
    float EE = (float) java.lang.Math.pow((double) 2.0, (double) E);
    //System.out.println( "DS EE=" + EE );


    Grib2JpegDecoder g2j = null;
    int numberPoints = 0;
    try {
      if (nb != 0) {  // there's data to decode
        String[] argv = new String[4];
        argv[0] = "-rate";
        argv[1] = Integer.toString(nb);
        argv[2] = "-verbose";
        argv[3] = "off";
        //argv[ 4 ] = "-debug" ;
        //argv[ 2 ] = "-nocolorspace" ;
        //argv[ 3 ] = "-Rno_roi" ;
        //argv[ 4 ] = "-cdstr_info" ;
        //argv[ 5 ] = "-verbose" ;
        g2j = new Grib2JpegDecoder(argv);
        // how jpeg2000.jar use to decode, used raf
        //g2j.decode(raf, length - 5);
        // jpeg-1.0.jar added method to have the data read first
        byte[] buf = new byte[ length - 5 ];
        raf.read( buf );
        g2j.decode( buf );
      }
      numberPoints = gds.getGdsVars().getNumberPoints();
      //System.out.println( "DS GDS NumberPoints=" +  gds.getNumberPoints() );
      data = new float[numberPoints];
      boolean[] bitmap = bms.getBitmap();

View Full Code Here

        float [][] out = new float [3][];
        float [][] in  = new float [3][];


        for (i=0;i<3;++i) {
            in[i]  = inblk [i] .getDataFloat();
            outblk[i] = new DataBlkFloat ();
            copyGeometry (outblk[i],inblk[i]);
            outblk[i].offset = inblk[i].offset;
            out[i] = new float [length];
            outblk[i].setData (out[i]); }

View Full Code Here

        int [][] out = new int [3][];
        int [][] in  = new int [3][];


        for (i=0;i<3;++i) {
            in[i]  = inblk [i] .getDataInt();
            outblk[i] = new DataBlkInt ();
            copyGeometry (outblk[i],inblk[i]);
            outblk[i].offset = inblk[i].offset;
            out[i] = new int [length];
            outblk[i].setData (out[i]); }

View Full Code Here

TOP

Related Classes of ucar.jpeg.jj2000.j2k.quantization.quantizer.CBlkQuantDataSrcEnc

ucar.grib.grib2.Grib2DataSection

ucar.jpeg.colorspace.SYccColorSpaceMapper

java.util.Vector

java.io.ByteArrayInputStream

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.