removed image processing code

brouter-util/src/main/java/btools/util/Raster2Png.java

@@ -1,170 +0,0 @@
-package btools.util;
-
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.util.zip.CRC32;
-import java.util.zip.Deflater;
-import java.util.zip.DeflaterOutputStream;
-
-public class Raster2Png extends ByteDataWriter
-{
-  /** Constants for filter (NONE) */
-  public static final int FILTER_NONE = 0;
-
-  /** IHDR tag. */
-  protected static final byte IHDR[] = { 73, 72, 68, 82 };
-
-  /** IDAT tag. */
-  protected static final byte IDAT[] = { 73, 68, 65, 84 };
-
-  /** IEND tag. */
-  protected static final byte IEND[] = { 73, 69, 78, 68 };
-
-  /** geometry */
-  protected int width, height;
-
-  protected int[] imagePixels;
-
-  /** CRC. */
-  protected CRC32 crc = new CRC32();
-
-  public Raster2Png()
-  {
-    super( null );
-  }
-
-  /**
-   * Converts a pixel array to it's PNG equivalent
-   */
-  public byte[] pngEncode( int width, int height, int[] imagePixels ) throws IOException
-  {
-    this.width = width;
-    this.height = height;
-    this.imagePixels = imagePixels;
-
-    // user a buffer large enough to hold the png
-    ab = new byte[( ( width + 1 ) * height * 3 ) + 200];
-
-    byte[] pngIdBytes =
-    { -119, 80, 78, 71, 13, 10, 26, 10 };
-    write( pngIdBytes );
-    writeHeader();
-    writeImageData();
-    return toByteArray();
-  }
-
-  /**
-   * Write a PNG "IHDR" chunk into the pngBytes array.
-   */
-  protected void writeHeader()
-  {
-    writeInt( 13 );
-    int startPos = aboffset;
-    write( IHDR );
-    writeInt( width );
-    writeInt( height );
-    writeByte( 8 ); // bit depth
-    writeByte( 2 ); // direct model
-    writeByte( 0 ); // compression method
-    writeByte( 0 ); // filter method
-    writeByte( 0 ); // no interlace
-    crc.reset();
-    crc.update( ab, startPos, aboffset - startPos );
-    writeInt( (int) crc.getValue() );
-  }
-
-  /**
-   * Write the image data into the pngBytes array. This will write one or more
-   * PNG "IDAT" chunks. In order to conserve memory, this method grabs as many
-   * rows as will fit into 32K bytes, or the whole image; whichever is less.
-   */
-  protected void writeImageData() throws IOException
-  {
-    int rowsLeft = height; // number of rows remaining to write
-    int startRow = 0; // starting row to process this time through
-    int nRows; // how many rows to grab at a time
-
-    byte[] scanLines; // the scan lines to be compressed
-    int scanPos; // where we are in the scan lines
-
-    byte[] compressedLines; // the resultant compressed lines
-    int nCompressed; // how big is the compressed area?
-
-    int bytesPerPixel = 3;
-
-    Deflater scrunch = new Deflater( 6 );
-    ByteArrayOutputStream outBytes = new ByteArrayOutputStream( 1024 );
-
-    DeflaterOutputStream compBytes = new DeflaterOutputStream( outBytes, scrunch );
-    while (rowsLeft > 0)
-    {
-      nRows = Math.min( 32767 / ( width * ( bytesPerPixel + 1 ) ), rowsLeft );
-      nRows = Math.max( nRows, 1 );
-
-      int[] pixels = new int[width * nRows];
-
-      getPixels( startRow, nRows, pixels );
-
-      /*
-       * Create a data chunk. scanLines adds "nRows" for the filter bytes.
-       */
-      scanLines = new byte[width * nRows * bytesPerPixel + nRows];
-
-      scanPos = 0;
-      for ( int i = 0; i < width * nRows; i++ )
-      {
-        if ( i % width == 0 )
-        {
-          scanLines[scanPos++] = (byte) FILTER_NONE;
-        }
-        scanLines[scanPos++] = (byte) ( ( pixels[i] >> 16 ) & 0xff );
-        scanLines[scanPos++] = (byte) ( ( pixels[i] >> 8 ) & 0xff );
-        scanLines[scanPos++] = (byte) ( ( pixels[i] ) & 0xff );
-      }
-
-      /*
-       * Write these lines to the output area
-       */
-      compBytes.write( scanLines, 0, scanPos );
-
-      startRow += nRows;
-      rowsLeft -= nRows;
-    }
-    compBytes.close();
-
-    /*
-     * Write the compressed bytes
-     */
-    compressedLines = outBytes.toByteArray();
-    nCompressed = compressedLines.length;
-
-    crc.reset();
-    writeInt( nCompressed );
-    write( IDAT );
-    crc.update( IDAT );
-    write( compressedLines );
-    crc.update( compressedLines, 0, nCompressed );
-
-    writeInt( (int) crc.getValue() );
-    scrunch.finish();
-
-    // Write a PNG "IEND" chunk into the pngBytes array.
-    writeInt( 0 );
-    write( IEND );
-    crc.reset();
-    crc.update( IEND );
-    writeInt( (int) crc.getValue() );
-  }
-
-  private void getPixels( int startRow, int nRows, int[] pixels )
-  {
-    for ( int i = 0; i < nRows; i++ )
-    {
-      int ir = i + startRow;
-      for ( int ic = 0; ic < width; ic++ )
-      {
-        pixels[i * width + ic] = imagePixels[ir * width + ic];
-      }
-    }
-  }
-}